Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1 | /* |
| 2 | * QEMU host block devices |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or |
| 7 | * later. See the COPYING file in the top-level directory. |
Markus Armbruster | 3618a09 | 2013-03-14 13:59:53 +0100 | [diff] [blame] | 8 | * |
| 9 | * This file incorporates work covered by the following copyright and |
| 10 | * permission notice: |
| 11 | * |
| 12 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 13 | * |
| 14 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 15 | * of this software and associated documentation files (the "Software"), to deal |
| 16 | * in the Software without restriction, including without limitation the rights |
| 17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 18 | * copies of the Software, and to permit persons to whom the Software is |
| 19 | * furnished to do so, subject to the following conditions: |
| 20 | * |
| 21 | * The above copyright notice and this permission notice shall be included in |
| 22 | * all copies or substantial portions of the Software. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 30 | * THE SOFTWARE. |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 31 | */ |
| 32 | |
Peter Maydell | d38ea87 | 2016-01-29 17:50:05 +0000 | [diff] [blame] | 33 | #include "qemu/osdep.h" |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 34 | #include "sysemu/block-backend.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 35 | #include "sysemu/blockdev.h" |
Paolo Bonzini | 0d09e41 | 2013-02-05 17:06:20 +0100 | [diff] [blame] | 36 | #include "hw/block/block.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 37 | #include "block/blockjob.h" |
Max Reitz | 609f45e | 2018-06-14 21:14:28 +0200 | [diff] [blame] | 38 | #include "block/qdict.h" |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 39 | #include "block/throttle-groups.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 40 | #include "monitor/monitor.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 41 | #include "qemu/error-report.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 42 | #include "qemu/option.h" |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 43 | #include "qemu/qemu-print.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 44 | #include "qemu/config-file.h" |
Markus Armbruster | 9af2398 | 2018-02-11 10:36:01 +0100 | [diff] [blame] | 45 | #include "qapi/qapi-commands-block.h" |
| 46 | #include "qapi/qapi-commands-transaction.h" |
| 47 | #include "qapi/qapi-visit-block-core.h" |
Markus Armbruster | 452fcdb | 2018-02-01 12:18:39 +0100 | [diff] [blame] | 48 | #include "qapi/qmp/qdict.h" |
Markus Armbruster | 15280c3 | 2018-02-01 12:18:36 +0100 | [diff] [blame] | 49 | #include "qapi/qmp/qnum.h" |
Markus Armbruster | 6b67395 | 2018-02-01 12:18:35 +0100 | [diff] [blame] | 50 | #include "qapi/qmp/qstring.h" |
Markus Armbruster | e688df6 | 2018-02-01 12:18:31 +0100 | [diff] [blame] | 51 | #include "qapi/error.h" |
Markus Armbruster | cc7a8ea | 2015-03-17 17:22:46 +0100 | [diff] [blame] | 52 | #include "qapi/qmp/qerror.h" |
Markus Armbruster | 47e6b29 | 2018-02-01 12:18:38 +0100 | [diff] [blame] | 53 | #include "qapi/qmp/qlist.h" |
Daniel P. Berrange | b3db211 | 2016-09-30 15:45:27 +0100 | [diff] [blame] | 54 | #include "qapi/qobject-output-visitor.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 55 | #include "sysemu/sysemu.h" |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 56 | #include "sysemu/iothread.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 57 | #include "block/block_int.h" |
Daniel P. Berrange | 0ab8ed1 | 2017-01-25 16:14:15 +0000 | [diff] [blame] | 58 | #include "block/trace.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 59 | #include "sysemu/arch_init.h" |
Thomas Huth | c616f16 | 2017-05-12 12:33:49 +0200 | [diff] [blame] | 60 | #include "sysemu/qtest.h" |
Markus Armbruster | 54d3123 | 2019-08-12 07:23:59 +0200 | [diff] [blame] | 61 | #include "sysemu/runstate.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 62 | #include "qemu/cutils.h" |
| 63 | #include "qemu/help_option.h" |
Markus Armbruster | db72581 | 2019-08-12 07:23:50 +0200 | [diff] [blame] | 64 | #include "qemu/main-loop.h" |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 65 | #include "qemu/throttle-options.h" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 66 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 67 | static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
| 68 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); |
| 69 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 70 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
| 71 | bool force, Error **errp); |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 72 | static void blockdev_remove_medium(bool has_device, const char *device, |
| 73 | bool has_id, const char *id, Error **errp); |
| 74 | static void blockdev_insert_medium(bool has_device, const char *device, |
| 75 | bool has_id, const char *id, |
| 76 | const char *node_name, Error **errp); |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 77 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 78 | static const char *const if_name[IF_COUNT] = { |
| 79 | [IF_NONE] = "none", |
| 80 | [IF_IDE] = "ide", |
| 81 | [IF_SCSI] = "scsi", |
| 82 | [IF_FLOPPY] = "floppy", |
| 83 | [IF_PFLASH] = "pflash", |
| 84 | [IF_MTD] = "mtd", |
| 85 | [IF_SD] = "sd", |
| 86 | [IF_VIRTIO] = "virtio", |
| 87 | [IF_XEN] = "xen", |
| 88 | }; |
| 89 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 90 | static int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 91 | /* |
| 92 | * Do not change these numbers! They govern how drive option |
| 93 | * index maps to unit and bus. That mapping is ABI. |
| 94 | * |
Wei Jiangang | 547cb15 | 2016-04-26 18:12:43 +0800 | [diff] [blame] | 95 | * All controllers used to implement if=T drives need to support |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 96 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 97 | * Otherwise, some index values map to "impossible" bus, unit |
| 98 | * values. |
| 99 | * |
| 100 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 101 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 102 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 103 | * the drive can't be set up. Regression. |
| 104 | */ |
| 105 | [IF_IDE] = 2, |
| 106 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 107 | }; |
| 108 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 109 | /** |
| 110 | * Boards may call this to offer board-by-board overrides |
| 111 | * of the default, global values. |
| 112 | */ |
| 113 | void override_max_devs(BlockInterfaceType type, int max_devs) |
| 114 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 115 | BlockBackend *blk; |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 116 | DriveInfo *dinfo; |
| 117 | |
| 118 | if (max_devs <= 0) { |
| 119 | return; |
| 120 | } |
| 121 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 122 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 123 | dinfo = blk_legacy_dinfo(blk); |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 124 | if (dinfo->type == type) { |
| 125 | fprintf(stderr, "Cannot override units-per-bus property of" |
| 126 | " the %s interface, because a drive of that type has" |
| 127 | " already been added.\n", if_name[type]); |
| 128 | g_assert_not_reached(); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | if_max_devs[type] = max_devs; |
| 133 | } |
| 134 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 135 | /* |
| 136 | * We automatically delete the drive when a device using it gets |
| 137 | * unplugged. Questionable feature, but we can't just drop it. |
| 138 | * Device models call blockdev_mark_auto_del() to schedule the |
| 139 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 140 | * when deletion is actually safe. |
| 141 | */ |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 142 | void blockdev_mark_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 143 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 144 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 145 | BlockJob *job; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 146 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 147 | if (!dinfo) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 148 | return; |
| 149 | } |
| 150 | |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 151 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
| 152 | if (block_job_has_bdrv(job, blk_bs(blk))) { |
| 153 | AioContext *aio_context = job->job.aio_context; |
| 154 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 155 | |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 156 | job_cancel(&job->job, false); |
| 157 | |
| 158 | aio_context_release(aio_context); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 159 | } |
Paolo Bonzini | 12bde0e | 2012-03-30 13:17:10 +0200 | [diff] [blame] | 160 | } |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 161 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 162 | dinfo->auto_del = 1; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 163 | } |
| 164 | |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 165 | void blockdev_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 166 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 167 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 168 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 169 | if (dinfo && dinfo->auto_del) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 170 | monitor_remove_blk(blk); |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 171 | blk_unref(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 172 | } |
| 173 | } |
| 174 | |
John Snow | d8f94e1 | 2014-10-01 14:19:27 -0400 | [diff] [blame] | 175 | /** |
| 176 | * Returns the current mapping of how many units per bus |
| 177 | * a particular interface can support. |
| 178 | * |
| 179 | * A positive integer indicates n units per bus. |
| 180 | * 0 implies the mapping has not been established. |
| 181 | * -1 indicates an invalid BlockInterfaceType was given. |
| 182 | */ |
| 183 | int drive_get_max_devs(BlockInterfaceType type) |
| 184 | { |
| 185 | if (type >= IF_IDE && type < IF_COUNT) { |
| 186 | return if_max_devs[type]; |
| 187 | } |
| 188 | |
| 189 | return -1; |
| 190 | } |
| 191 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 192 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 193 | { |
| 194 | int max_devs = if_max_devs[type]; |
| 195 | return max_devs ? index / max_devs : 0; |
| 196 | } |
| 197 | |
| 198 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 199 | { |
| 200 | int max_devs = if_max_devs[type]; |
| 201 | return max_devs ? index % max_devs : index; |
| 202 | } |
| 203 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 204 | QemuOpts *drive_def(const char *optstr) |
| 205 | { |
Markus Armbruster | 70b9433 | 2015-02-13 12:50:26 +0100 | [diff] [blame] | 206 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 207 | } |
| 208 | |
| 209 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 210 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 211 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 212 | QemuOpts *opts; |
| 213 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 214 | opts = drive_def(optstr); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 215 | if (!opts) { |
| 216 | return NULL; |
| 217 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 218 | if (type != IF_DEFAULT) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 219 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 220 | } |
| 221 | if (index >= 0) { |
Markus Armbruster | a8b18f8 | 2015-02-13 15:50:43 +0100 | [diff] [blame] | 222 | qemu_opt_set_number(opts, "index", index, &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 223 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 224 | if (file) |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 225 | qemu_opt_set(opts, "file", file, &error_abort); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 226 | return opts; |
| 227 | } |
| 228 | |
| 229 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 230 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 231 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 232 | DriveInfo *dinfo; |
| 233 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 234 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 235 | dinfo = blk_legacy_dinfo(blk); |
| 236 | if (dinfo && dinfo->type == type |
| 237 | && dinfo->bus == bus && dinfo->unit == unit) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 238 | return dinfo; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 239 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | return NULL; |
| 243 | } |
| 244 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 245 | void drive_check_orphaned(void) |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 246 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 247 | BlockBackend *blk; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 248 | DriveInfo *dinfo; |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 249 | Location loc; |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 250 | bool orphans = false; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 251 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 252 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 253 | dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 254 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 255 | dinfo->type != IF_NONE) { |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 256 | loc_push_none(&loc); |
| 257 | qemu_opts_loc_restore(dinfo->opts); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 258 | error_report("machine type does not support" |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 259 | " if=%s,bus=%d,unit=%d", |
| 260 | if_name[dinfo->type], dinfo->bus, dinfo->unit); |
| 261 | loc_pop(&loc); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 262 | orphans = true; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 263 | } |
| 264 | } |
| 265 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 266 | if (orphans) { |
| 267 | exit(1); |
| 268 | } |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 269 | } |
| 270 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 271 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 272 | { |
| 273 | return drive_get(type, |
| 274 | drive_index_to_bus_id(type, index), |
| 275 | drive_index_to_unit_id(type, index)); |
| 276 | } |
| 277 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 278 | int drive_get_max_bus(BlockInterfaceType type) |
| 279 | { |
| 280 | int max_bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 281 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 282 | DriveInfo *dinfo; |
| 283 | |
| 284 | max_bus = -1; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 285 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 286 | dinfo = blk_legacy_dinfo(blk); |
| 287 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 288 | max_bus = dinfo->bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 289 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 290 | } |
| 291 | return max_bus; |
| 292 | } |
| 293 | |
Markus Armbruster | 1383997 | 2011-01-28 11:21:37 +0100 | [diff] [blame] | 294 | /* Get a block device. This should only be used for single-drive devices |
| 295 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the |
| 296 | appropriate bus. */ |
| 297 | DriveInfo *drive_get_next(BlockInterfaceType type) |
| 298 | { |
| 299 | static int next_block_unit[IF_COUNT]; |
| 300 | |
| 301 | return drive_get(type, 0, next_block_unit[type]++); |
| 302 | } |
| 303 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 304 | static void bdrv_format_print(void *opaque, const char *name) |
| 305 | { |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 306 | qemu_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 307 | } |
| 308 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 309 | typedef struct { |
| 310 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 311 | BlockDriverState *bs; |
| 312 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 313 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 314 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 315 | { |
| 316 | if (!strcmp(buf, "ignore")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 317 | return BLOCKDEV_ON_ERROR_IGNORE; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 318 | } else if (!is_read && !strcmp(buf, "enospc")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 319 | return BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 320 | } else if (!strcmp(buf, "stop")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 321 | return BLOCKDEV_ON_ERROR_STOP; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 322 | } else if (!strcmp(buf, "report")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 323 | return BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 324 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 325 | error_setg(errp, "'%s' invalid %s error action", |
| 326 | buf, is_read ? "read" : "write"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 327 | return -1; |
| 328 | } |
| 329 | } |
| 330 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 331 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
| 332 | Error **errp) |
| 333 | { |
| 334 | const QListEntry *entry; |
| 335 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { |
| 336 | switch (qobject_type(entry->value)) { |
| 337 | |
| 338 | case QTYPE_QSTRING: { |
| 339 | unsigned long long length; |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 340 | const char *str = qstring_get_str(qobject_to(QString, |
| 341 | entry->value)); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 342 | if (parse_uint_full(str, &length, 10) == 0 && |
| 343 | length > 0 && length <= UINT_MAX) { |
| 344 | block_acct_add_interval(stats, (unsigned) length); |
| 345 | } else { |
| 346 | error_setg(errp, "Invalid interval length: %s", str); |
| 347 | return false; |
| 348 | } |
| 349 | break; |
| 350 | } |
| 351 | |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 352 | case QTYPE_QNUM: { |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 353 | int64_t length = qnum_get_int(qobject_to(QNum, entry->value)); |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 354 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 355 | if (length > 0 && length <= UINT_MAX) { |
| 356 | block_acct_add_interval(stats, (unsigned) length); |
| 357 | } else { |
| 358 | error_setg(errp, "Invalid interval length: %" PRId64, length); |
| 359 | return false; |
| 360 | } |
| 361 | break; |
| 362 | } |
| 363 | |
| 364 | default: |
| 365 | error_setg(errp, "The specification of stats-intervals is invalid"); |
| 366 | return false; |
| 367 | } |
| 368 | } |
| 369 | return true; |
| 370 | } |
| 371 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 372 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 373 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 374 | /* All parameters but @opts are optional and may be set to NULL. */ |
| 375 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, |
| 376 | const char **throttling_group, ThrottleConfig *throttle_cfg, |
| 377 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) |
| 378 | { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 379 | Error *local_error = NULL; |
| 380 | const char *aio; |
| 381 | |
| 382 | if (bdrv_flags) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 383 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
| 384 | *bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 385 | } |
| 386 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 387 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
Aarushi Mehta | f80f267 | 2020-01-20 14:18:50 +0000 | [diff] [blame] | 388 | if (bdrv_parse_aio(aio, bdrv_flags) < 0) { |
| 389 | error_setg(errp, "invalid aio option"); |
| 390 | return; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 391 | } |
| 392 | } |
| 393 | } |
| 394 | |
| 395 | /* disk I/O throttling */ |
| 396 | if (throttling_group) { |
| 397 | *throttling_group = qemu_opt_get(opts, "throttling.group"); |
| 398 | } |
| 399 | |
| 400 | if (throttle_cfg) { |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 401 | throttle_config_init(throttle_cfg); |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 402 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
| 403 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
| 404 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = |
| 405 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
| 406 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = |
| 407 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
| 408 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = |
| 409 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
| 410 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = |
| 411 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
| 412 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = |
| 413 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
| 414 | |
| 415 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = |
| 416 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 417 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = |
| 418 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 419 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = |
| 420 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 421 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = |
| 422 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 423 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = |
| 424 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 425 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = |
| 426 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
| 427 | |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 428 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
| 429 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); |
| 430 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = |
| 431 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); |
| 432 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = |
| 433 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); |
| 434 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = |
| 435 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); |
| 436 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = |
| 437 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); |
| 438 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = |
| 439 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); |
| 440 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 441 | throttle_cfg->op_size = |
| 442 | qemu_opt_get_number(opts, "throttling.iops-size", 0); |
| 443 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 444 | if (!throttle_is_valid(throttle_cfg, errp)) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 445 | return; |
| 446 | } |
| 447 | } |
| 448 | |
| 449 | if (detect_zeroes) { |
| 450 | *detect_zeroes = |
Marc-André Lureau | f7abe0e | 2017-08-24 10:46:10 +0200 | [diff] [blame] | 451 | qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 452 | qemu_opt_get(opts, "detect-zeroes"), |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 453 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 454 | &local_error); |
| 455 | if (local_error) { |
| 456 | error_propagate(errp, local_error); |
| 457 | return; |
| 458 | } |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 459 | } |
| 460 | } |
| 461 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 462 | /* Takes the ownership of bs_opts */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 463 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
| 464 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 465 | { |
| 466 | const char *buf; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 467 | int bdrv_flags = 0; |
| 468 | int on_read_error, on_write_error; |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 469 | bool account_invalid, account_failed; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 470 | bool writethrough, read_only; |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 471 | BlockBackend *blk; |
Markus Armbruster | a0f1eab | 2014-09-12 21:26:21 +0200 | [diff] [blame] | 472 | BlockDriverState *bs; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 473 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 474 | int snapshot = 0; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 475 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 476 | QemuOpts *opts; |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 477 | QDict *interval_dict = NULL; |
| 478 | QList *interval_list = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 479 | const char *id; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 480 | BlockdevDetectZeroesOptions detect_zeroes = |
| 481 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; |
| 482 | const char *throttling_group = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 483 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 484 | /* Check common options by copying from bs_opts to opts, all other options |
| 485 | * stay in bs_opts for processing by bdrv_open(). */ |
| 486 | id = qdict_get_try_str(bs_opts, "id"); |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 487 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 488 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 489 | error_propagate(errp, error); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 490 | goto err_no_opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 491 | } |
| 492 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 493 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 494 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 495 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 496 | goto early_err; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 497 | } |
| 498 | |
| 499 | if (id) { |
| 500 | qdict_del(bs_opts, "id"); |
| 501 | } |
| 502 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 503 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 504 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 505 | |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 506 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
| 507 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); |
| 508 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 509 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
| 510 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 511 | id = qemu_opts_id(opts); |
| 512 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 513 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
| 514 | qdict_array_split(interval_dict, &interval_list); |
| 515 | |
| 516 | if (qdict_size(interval_dict) != 0) { |
| 517 | error_setg(errp, "Invalid option stats-intervals.%s", |
| 518 | qdict_first(interval_dict)->key); |
| 519 | goto early_err; |
| 520 | } |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 521 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 522 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
| 523 | &detect_zeroes, &error); |
| 524 | if (error) { |
| 525 | error_propagate(errp, error); |
| 526 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 527 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 528 | |
| 529 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 530 | if (is_help_option(buf)) { |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 531 | qemu_printf("Supported formats:"); |
Andrey Shinkevich | 9ac404c | 2019-03-07 16:33:58 +0300 | [diff] [blame] | 532 | bdrv_iterate_format(bdrv_format_print, NULL, false); |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 533 | qemu_printf("\nSupported formats (read-only):"); |
Andrey Shinkevich | 9ac404c | 2019-03-07 16:33:58 +0300 | [diff] [blame] | 534 | bdrv_iterate_format(bdrv_format_print, NULL, true); |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 535 | qemu_printf("\n"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 536 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 537 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 538 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 539 | if (qdict_haskey(bs_opts, "driver")) { |
| 540 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 541 | goto early_err; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 542 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 543 | qdict_put_str(bs_opts, "driver", buf); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 544 | } |
| 545 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 546 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 547 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 548 | on_write_error = parse_block_error_action(buf, 0, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 549 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 550 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 551 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 552 | } |
| 553 | } |
| 554 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 555 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 556 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 557 | on_read_error = parse_block_error_action(buf, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 558 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 559 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 560 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 561 | } |
| 562 | } |
| 563 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 564 | if (snapshot) { |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 565 | bdrv_flags |= BDRV_O_SNAPSHOT; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 566 | } |
| 567 | |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 568 | read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false); |
| 569 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 570 | /* init */ |
Kevin Wolf | 39c4ae9 | 2015-11-13 14:45:42 +0100 | [diff] [blame] | 571 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 572 | BlockBackendRootState *blk_rs; |
| 573 | |
Kevin Wolf | d861ab3 | 2019-04-25 14:25:10 +0200 | [diff] [blame] | 574 | blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 575 | blk_rs = blk_get_root_state(blk); |
| 576 | blk_rs->open_flags = bdrv_flags; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 577 | blk_rs->read_only = read_only; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 578 | blk_rs->detect_zeroes = detect_zeroes; |
| 579 | |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 580 | qobject_unref(bs_opts); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 581 | } else { |
| 582 | if (file && !*file) { |
| 583 | file = NULL; |
| 584 | } |
| 585 | |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 586 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 587 | * with other callers) rather than what we want as the real defaults. |
| 588 | * Apply the defaults here instead. */ |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 589 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 590 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 591 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, |
| 592 | read_only ? "on" : "off"); |
Kevin Wolf | 9384a44 | 2018-10-17 18:24:30 +0200 | [diff] [blame] | 593 | qdict_set_default_str(bs_opts, BDRV_OPT_AUTO_READ_ONLY, "on"); |
Kevin Wolf | 72e775c | 2016-03-15 14:34:37 +0100 | [diff] [blame] | 594 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 595 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 596 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 597 | bdrv_flags |= BDRV_O_INACTIVE; |
| 598 | } |
| 599 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 600 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 601 | if (!blk) { |
| 602 | goto err_no_bs_opts; |
| 603 | } |
| 604 | bs = blk_bs(blk); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 605 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 606 | bs->detect_zeroes = detect_zeroes; |
| 607 | |
Paolo Bonzini | 9caa6f3 | 2017-06-05 14:39:07 +0200 | [diff] [blame] | 608 | block_acct_setup(blk_get_stats(blk), account_invalid, account_failed); |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 609 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 610 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
| 611 | blk_unref(blk); |
| 612 | blk = NULL; |
| 613 | goto err_no_bs_opts; |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 614 | } |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 615 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 616 | |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 617 | /* disk I/O throttling */ |
| 618 | if (throttle_enabled(&cfg)) { |
| 619 | if (!throttling_group) { |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 620 | throttling_group = id; |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 621 | } |
| 622 | blk_io_limits_enable(blk, throttling_group); |
| 623 | blk_set_io_limits(blk, &cfg); |
| 624 | } |
| 625 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 626 | blk_set_enable_write_cache(blk, !writethrough); |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 627 | blk_set_on_error(blk, on_read_error, on_write_error); |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 628 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 629 | if (!monitor_add_blk(blk, id, errp)) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 630 | blk_unref(blk); |
| 631 | blk = NULL; |
| 632 | goto err_no_bs_opts; |
| 633 | } |
| 634 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 635 | err_no_bs_opts: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 636 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 637 | qobject_unref(interval_dict); |
| 638 | qobject_unref(interval_list); |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 639 | return blk; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 640 | |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 641 | early_err: |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 642 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 643 | qobject_unref(interval_dict); |
| 644 | qobject_unref(interval_list); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 645 | err_no_opts: |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 646 | qobject_unref(bs_opts); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 647 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 648 | } |
| 649 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 650 | /* Takes the ownership of bs_opts */ |
| 651 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) |
| 652 | { |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 653 | int bdrv_flags = 0; |
| 654 | |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 655 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 656 | * with other callers) rather than what we want as the real defaults. |
| 657 | * Apply the defaults here instead. */ |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 658 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 659 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 660 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off"); |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 661 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 662 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 663 | bdrv_flags |= BDRV_O_INACTIVE; |
| 664 | } |
| 665 | |
Kevin Wolf | 74e1ae7 | 2016-09-20 20:48:52 +0200 | [diff] [blame] | 666 | return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 667 | } |
| 668 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 669 | void blockdev_close_all_bdrv_states(void) |
| 670 | { |
| 671 | BlockDriverState *bs, *next_bs; |
| 672 | |
| 673 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { |
| 674 | AioContext *ctx = bdrv_get_aio_context(bs); |
| 675 | |
| 676 | aio_context_acquire(ctx); |
| 677 | bdrv_unref(bs); |
| 678 | aio_context_release(ctx); |
| 679 | } |
| 680 | } |
| 681 | |
Max Reitz | 262b4e8 | 2016-03-16 19:54:41 +0100 | [diff] [blame] | 682 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
| 683 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) |
| 684 | { |
| 685 | return bs ? QTAILQ_NEXT(bs, monitor_list) |
| 686 | : QTAILQ_FIRST(&monitor_bdrv_states); |
| 687 | } |
| 688 | |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 689 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
| 690 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 691 | { |
| 692 | const char *value; |
| 693 | |
| 694 | value = qemu_opt_get(opts, from); |
| 695 | if (value) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 696 | if (qemu_opt_find(opts, to)) { |
| 697 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " |
| 698 | "same time", to, from); |
| 699 | return; |
| 700 | } |
Jun Li | 20d6cd4 | 2014-09-24 13:45:27 +0800 | [diff] [blame] | 701 | } |
| 702 | |
| 703 | /* rename all items in opts */ |
| 704 | while ((value = qemu_opt_get(opts, from))) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 705 | qemu_opt_set(opts, to, value, &error_abort); |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 706 | qemu_opt_unset(opts, from); |
| 707 | } |
| 708 | } |
| 709 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 710 | QemuOptsList qemu_legacy_drive_opts = { |
| 711 | .name = "drive", |
| 712 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 713 | .desc = { |
| 714 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 715 | .name = "bus", |
| 716 | .type = QEMU_OPT_NUMBER, |
| 717 | .help = "bus number", |
| 718 | },{ |
| 719 | .name = "unit", |
| 720 | .type = QEMU_OPT_NUMBER, |
| 721 | .help = "unit number (i.e. lun for scsi)", |
| 722 | },{ |
| 723 | .name = "index", |
| 724 | .type = QEMU_OPT_NUMBER, |
| 725 | .help = "index number", |
| 726 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 727 | .name = "media", |
| 728 | .type = QEMU_OPT_STRING, |
| 729 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 730 | },{ |
| 731 | .name = "if", |
| 732 | .type = QEMU_OPT_STRING, |
| 733 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 734 | },{ |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 735 | .name = "file", |
| 736 | .type = QEMU_OPT_STRING, |
| 737 | .help = "file name", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 738 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 739 | |
| 740 | /* Options that are passed on, but have special semantics with -drive */ |
| 741 | { |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 742 | .name = BDRV_OPT_READ_ONLY, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 743 | .type = QEMU_OPT_BOOL, |
| 744 | .help = "open drive file as read-only", |
| 745 | },{ |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 746 | .name = "rerror", |
| 747 | .type = QEMU_OPT_STRING, |
| 748 | .help = "read error action", |
| 749 | },{ |
| 750 | .name = "werror", |
| 751 | .type = QEMU_OPT_STRING, |
| 752 | .help = "write error action", |
| 753 | },{ |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 754 | .name = "copy-on-read", |
| 755 | .type = QEMU_OPT_BOOL, |
| 756 | .help = "copy read data from backing file into image file", |
| 757 | }, |
| 758 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 759 | { /* end of list */ } |
| 760 | }, |
| 761 | }; |
| 762 | |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 763 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type, |
| 764 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 765 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 766 | const char *value; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 767 | BlockBackend *blk; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 768 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 769 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 770 | QemuOpts *legacy_opts; |
| 771 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 772 | BlockInterfaceType type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 773 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 774 | const char *werror, *rerror; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 775 | bool read_only = false; |
| 776 | bool copy_on_read; |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 777 | const char *filename; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 778 | Error *local_err = NULL; |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 779 | int i; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 780 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 781 | /* Change legacy command line options into QMP ones */ |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 782 | static const struct { |
| 783 | const char *from; |
| 784 | const char *to; |
| 785 | } opt_renames[] = { |
| 786 | { "iops", "throttling.iops-total" }, |
| 787 | { "iops_rd", "throttling.iops-read" }, |
| 788 | { "iops_wr", "throttling.iops-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 789 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 790 | { "bps", "throttling.bps-total" }, |
| 791 | { "bps_rd", "throttling.bps-read" }, |
| 792 | { "bps_wr", "throttling.bps-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 793 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 794 | { "iops_max", "throttling.iops-total-max" }, |
| 795 | { "iops_rd_max", "throttling.iops-read-max" }, |
| 796 | { "iops_wr_max", "throttling.iops-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 797 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 798 | { "bps_max", "throttling.bps-total-max" }, |
| 799 | { "bps_rd_max", "throttling.bps-read-max" }, |
| 800 | { "bps_wr_max", "throttling.bps-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 801 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 802 | { "iops_size", "throttling.iops-size" }, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 803 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 804 | { "group", "throttling.group" }, |
| 805 | |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 806 | { "readonly", BDRV_OPT_READ_ONLY }, |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 807 | }; |
| 808 | |
| 809 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 810 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
| 811 | &local_err); |
| 812 | if (local_err) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 813 | error_propagate(errp, local_err); |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 814 | return NULL; |
| 815 | } |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 816 | } |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 817 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 818 | value = qemu_opt_get(all_opts, "cache"); |
| 819 | if (value) { |
| 820 | int flags = 0; |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 821 | bool writethrough; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 822 | |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 823 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 824 | error_setg(errp, "invalid cache option"); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 825 | return NULL; |
| 826 | } |
| 827 | |
| 828 | /* Specific options take precedence */ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 829 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
| 830 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 831 | !writethrough, &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 832 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 833 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
| 834 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 835 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 836 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 837 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
| 838 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 839 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 840 | } |
| 841 | qemu_opt_unset(all_opts, "cache"); |
| 842 | } |
| 843 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 844 | /* Get a QDict for processing the options */ |
| 845 | bs_opts = qdict_new(); |
| 846 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 847 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 848 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
| 849 | &error_abort); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 850 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 851 | if (local_err) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 852 | error_propagate(errp, local_err); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 853 | goto fail; |
| 854 | } |
| 855 | |
| 856 | /* Media type */ |
| 857 | value = qemu_opt_get(legacy_opts, "media"); |
| 858 | if (value) { |
| 859 | if (!strcmp(value, "disk")) { |
| 860 | media = MEDIA_DISK; |
| 861 | } else if (!strcmp(value, "cdrom")) { |
| 862 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 863 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 864 | } else { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 865 | error_setg(errp, "'%s' invalid media", value); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 866 | goto fail; |
| 867 | } |
| 868 | } |
| 869 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 870 | /* copy-on-read is disabled with a warning for read-only devices */ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 871 | read_only |= qemu_opt_get_bool(legacy_opts, BDRV_OPT_READ_ONLY, false); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 872 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 873 | |
| 874 | if (read_only && copy_on_read) { |
Alistair Francis | 3dc6f86 | 2017-07-12 06:57:41 -0700 | [diff] [blame] | 875 | warn_report("disabling copy-on-read on read-only drive"); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 876 | copy_on_read = false; |
| 877 | } |
| 878 | |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 879 | qdict_put_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); |
| 880 | qdict_put_str(bs_opts, "copy-on-read", copy_on_read ? "on" : "off"); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 881 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 882 | /* Controller type */ |
| 883 | value = qemu_opt_get(legacy_opts, "if"); |
| 884 | if (value) { |
| 885 | for (type = 0; |
| 886 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 887 | type++) { |
| 888 | } |
| 889 | if (type == IF_COUNT) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 890 | error_setg(errp, "unsupported bus type '%s'", value); |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 891 | goto fail; |
| 892 | } |
| 893 | } else { |
| 894 | type = block_default_type; |
| 895 | } |
| 896 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 897 | /* Device address specified by bus/unit or index. |
| 898 | * If none was specified, try to find the first free one. */ |
| 899 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 900 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 901 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 902 | |
| 903 | max_devs = if_max_devs[type]; |
| 904 | |
| 905 | if (index != -1) { |
| 906 | if (bus_id != 0 || unit_id != -1) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 907 | error_setg(errp, "index cannot be used with bus and unit"); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 908 | goto fail; |
| 909 | } |
| 910 | bus_id = drive_index_to_bus_id(type, index); |
| 911 | unit_id = drive_index_to_unit_id(type, index); |
| 912 | } |
| 913 | |
| 914 | if (unit_id == -1) { |
| 915 | unit_id = 0; |
| 916 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 917 | unit_id++; |
| 918 | if (max_devs && unit_id >= max_devs) { |
| 919 | unit_id -= max_devs; |
| 920 | bus_id++; |
| 921 | } |
| 922 | } |
| 923 | } |
| 924 | |
| 925 | if (max_devs && unit_id >= max_devs) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 926 | error_setg(errp, "unit %d too big (max is %d)", unit_id, max_devs - 1); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 927 | goto fail; |
| 928 | } |
| 929 | |
| 930 | if (drive_get(type, bus_id, unit_id) != NULL) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 931 | error_setg(errp, "drive with bus=%d, unit=%d (index=%d) exists", |
| 932 | bus_id, unit_id, index); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 933 | goto fail; |
| 934 | } |
| 935 | |
| 936 | /* no id supplied -> create one */ |
| 937 | if (qemu_opts_id(all_opts) == NULL) { |
| 938 | char *new_id; |
| 939 | const char *mediastr = ""; |
| 940 | if (type == IF_IDE || type == IF_SCSI) { |
| 941 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 942 | } |
| 943 | if (max_devs) { |
| 944 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 945 | mediastr, unit_id); |
| 946 | } else { |
| 947 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 948 | mediastr, unit_id); |
| 949 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 950 | qdict_put_str(bs_opts, "id", new_id); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 951 | g_free(new_id); |
| 952 | } |
| 953 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 954 | /* Add virtio block device */ |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 955 | if (type == IF_VIRTIO) { |
| 956 | QemuOpts *devopts; |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 957 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 958 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 959 | if (arch_type == QEMU_ARCH_S390X) { |
Alexander Graf | 1f68f1d | 2015-06-16 23:06:33 +0200 | [diff] [blame] | 960 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 961 | } else { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 962 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 963 | } |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 964 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 965 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 966 | } |
| 967 | |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 968 | filename = qemu_opt_get(legacy_opts, "file"); |
| 969 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 970 | /* Check werror/rerror compatibility with if=... */ |
| 971 | werror = qemu_opt_get(legacy_opts, "werror"); |
| 972 | if (werror != NULL) { |
| 973 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && |
| 974 | type != IF_NONE) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 975 | error_setg(errp, "werror is not supported by this bus type"); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 976 | goto fail; |
| 977 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 978 | qdict_put_str(bs_opts, "werror", werror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 979 | } |
| 980 | |
| 981 | rerror = qemu_opt_get(legacy_opts, "rerror"); |
| 982 | if (rerror != NULL) { |
| 983 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && |
| 984 | type != IF_NONE) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 985 | error_setg(errp, "rerror is not supported by this bus type"); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 986 | goto fail; |
| 987 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 988 | qdict_put_str(bs_opts, "rerror", rerror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 989 | } |
| 990 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 991 | /* Actual block device init: Functionality shared with blockdev-add */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 992 | blk = blockdev_init(filename, bs_opts, &local_err); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 993 | bs_opts = NULL; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 994 | if (!blk) { |
Markus Armbruster | b232200 | 2018-12-13 18:31:13 +0100 | [diff] [blame] | 995 | error_propagate(errp, local_err); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 996 | goto fail; |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 997 | } else { |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 998 | assert(!local_err); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 999 | } |
| 1000 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1001 | /* Create legacy DriveInfo */ |
| 1002 | dinfo = g_malloc0(sizeof(*dinfo)); |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 1003 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1004 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1005 | dinfo->type = type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1006 | dinfo->bus = bus_id; |
| 1007 | dinfo->unit = unit_id; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1008 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1009 | blk_set_legacy_dinfo(blk, dinfo); |
| 1010 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 1011 | switch(type) { |
| 1012 | case IF_IDE: |
| 1013 | case IF_SCSI: |
| 1014 | case IF_XEN: |
| 1015 | case IF_NONE: |
| 1016 | dinfo->media_cd = media == MEDIA_CDROM; |
| 1017 | break; |
| 1018 | default: |
| 1019 | break; |
| 1020 | } |
| 1021 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1022 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 1023 | qemu_opts_del(legacy_opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 1024 | qobject_unref(bs_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1025 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 1026 | } |
| 1027 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1028 | static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) |
| 1029 | { |
| 1030 | BlockDriverState *bs; |
| 1031 | |
| 1032 | bs = bdrv_lookup_bs(name, name, errp); |
| 1033 | if (bs == NULL) { |
| 1034 | return NULL; |
| 1035 | } |
| 1036 | |
| 1037 | if (!bdrv_is_root_node(bs)) { |
| 1038 | error_setg(errp, "Need a root block node"); |
| 1039 | return NULL; |
| 1040 | } |
| 1041 | |
| 1042 | if (!bdrv_is_inserted(bs)) { |
| 1043 | error_setg(errp, "Device has no medium"); |
| 1044 | return NULL; |
| 1045 | } |
| 1046 | |
| 1047 | return bs; |
| 1048 | } |
| 1049 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 1050 | static BlockBackend *qmp_get_blk(const char *blk_name, const char *qdev_id, |
| 1051 | Error **errp) |
| 1052 | { |
| 1053 | BlockBackend *blk; |
| 1054 | |
| 1055 | if (!blk_name == !qdev_id) { |
| 1056 | error_setg(errp, "Need exactly one of 'device' and 'id'"); |
| 1057 | return NULL; |
| 1058 | } |
| 1059 | |
| 1060 | if (qdev_id) { |
| 1061 | blk = blk_by_qdev_id(qdev_id, errp); |
| 1062 | } else { |
| 1063 | blk = blk_by_name(blk_name); |
| 1064 | if (blk == NULL) { |
| 1065 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 1066 | "Device '%s' not found", blk_name); |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | return blk; |
| 1071 | } |
| 1072 | |
Markus Armbruster | 3e5a50d | 2015-02-06 13:55:43 +0100 | [diff] [blame] | 1073 | void hmp_commit(Monitor *mon, const QDict *qdict) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1074 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1075 | const char *device = qdict_get_str(qdict, "device"); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1076 | BlockBackend *blk; |
Stefan Hajnoczi | e887749 | 2012-03-05 18:10:11 +0000 | [diff] [blame] | 1077 | int ret; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1078 | |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1079 | if (!strcmp(device, "all")) { |
Max Reitz | da31d59 | 2016-03-16 19:54:32 +0100 | [diff] [blame] | 1080 | ret = blk_commit_all(); |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1081 | } else { |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1082 | BlockDriverState *bs; |
| 1083 | AioContext *aio_context; |
| 1084 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1085 | blk = blk_by_name(device); |
| 1086 | if (!blk) { |
Kevin Wolf | 4674111 | 2019-05-27 18:01:41 +0200 | [diff] [blame] | 1087 | error_report("Device '%s' not found", device); |
Markus Armbruster | ac59eb9 | 2010-06-02 18:55:19 +0200 | [diff] [blame] | 1088 | return; |
Markus Armbruster | 6ab4b5a | 2010-06-02 18:55:18 +0200 | [diff] [blame] | 1089 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1090 | if (!blk_is_available(blk)) { |
Kevin Wolf | 4674111 | 2019-05-27 18:01:41 +0200 | [diff] [blame] | 1091 | error_report("Device '%s' has no medium", device); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1092 | return; |
| 1093 | } |
Stefan Hajnoczi | 84aa014 | 2015-11-04 20:27:23 +0300 | [diff] [blame] | 1094 | |
| 1095 | bs = blk_bs(blk); |
| 1096 | aio_context = bdrv_get_aio_context(bs); |
| 1097 | aio_context_acquire(aio_context); |
| 1098 | |
| 1099 | ret = bdrv_commit(bs); |
| 1100 | |
| 1101 | aio_context_release(aio_context); |
Jeff Cody | 58513bd | 2013-01-18 12:45:35 -0500 | [diff] [blame] | 1102 | } |
| 1103 | if (ret < 0) { |
Kevin Wolf | 4674111 | 2019-05-27 18:01:41 +0200 | [diff] [blame] | 1104 | error_report("'commit' error for '%s': %s", device, strerror(-ret)); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 1105 | } |
| 1106 | } |
| 1107 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1108 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1109 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1110 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1111 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1112 | list.value = action; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1113 | list.next = NULL; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1114 | qmp_transaction(&list, false, NULL, errp); |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1115 | } |
| 1116 | |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1117 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
| 1118 | bool has_node_name, const char *node_name, |
| 1119 | const char *snapshot_file, |
| 1120 | bool has_snapshot_node_name, |
| 1121 | const char *snapshot_node_name, |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 1122 | bool has_format, const char *format, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1123 | bool has_mode, NewImageMode mode, Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1124 | { |
Alberto Garcia | a911e6a | 2015-10-26 14:27:14 +0200 | [diff] [blame] | 1125 | BlockdevSnapshotSync snapshot = { |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1126 | .has_device = has_device, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1127 | .device = (char *) device, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1128 | .has_node_name = has_node_name, |
| 1129 | .node_name = (char *) node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1130 | .snapshot_file = (char *) snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1131 | .has_snapshot_node_name = has_snapshot_node_name, |
| 1132 | .snapshot_node_name = (char *) snapshot_node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1133 | .has_format = has_format, |
| 1134 | .format = (char *) format, |
| 1135 | .has_mode = has_mode, |
| 1136 | .mode = mode, |
| 1137 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1138 | TransactionAction action = { |
| 1139 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1140 | .u.blockdev_snapshot_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1141 | }; |
| 1142 | blockdev_do_action(&action, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1143 | } |
| 1144 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1145 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
| 1146 | Error **errp) |
| 1147 | { |
| 1148 | BlockdevSnapshot snapshot_data = { |
| 1149 | .node = (char *) node, |
| 1150 | .overlay = (char *) overlay |
| 1151 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1152 | TransactionAction action = { |
| 1153 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1154 | .u.blockdev_snapshot.data = &snapshot_data, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1155 | }; |
| 1156 | blockdev_do_action(&action, errp); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1157 | } |
| 1158 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1159 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 1160 | const char *name, |
| 1161 | Error **errp) |
| 1162 | { |
| 1163 | BlockdevSnapshotInternal snapshot = { |
| 1164 | .device = (char *) device, |
| 1165 | .name = (char *) name |
| 1166 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1167 | TransactionAction action = { |
| 1168 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1169 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1170 | }; |
| 1171 | blockdev_do_action(&action, errp); |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1172 | } |
| 1173 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1174 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
| 1175 | bool has_id, |
| 1176 | const char *id, |
| 1177 | bool has_name, |
| 1178 | const char *name, |
| 1179 | Error **errp) |
| 1180 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1181 | BlockDriverState *bs; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1182 | AioContext *aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1183 | QEMUSnapshotInfo sn; |
| 1184 | Error *local_err = NULL; |
| 1185 | SnapshotInfo *info = NULL; |
| 1186 | int ret; |
| 1187 | |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1188 | bs = qmp_get_root_bs(device, errp); |
| 1189 | if (!bs) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1190 | return NULL; |
| 1191 | } |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1192 | aio_context = bdrv_get_aio_context(bs); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1193 | aio_context_acquire(aio_context); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1194 | |
| 1195 | if (!has_id) { |
| 1196 | id = NULL; |
| 1197 | } |
| 1198 | |
| 1199 | if (!has_name) { |
| 1200 | name = NULL; |
| 1201 | } |
| 1202 | |
| 1203 | if (!id && !name) { |
| 1204 | error_setg(errp, "Name or id must be provided"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1205 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1206 | } |
| 1207 | |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1208 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
| 1209 | goto out_aio_context; |
| 1210 | } |
| 1211 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1212 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1213 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1214 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1215 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1216 | } |
| 1217 | if (!ret) { |
| 1218 | error_setg(errp, |
| 1219 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1220 | "device '%s'", |
| 1221 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1222 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1223 | } |
| 1224 | |
| 1225 | bdrv_snapshot_delete(bs, id, name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1226 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1227 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1228 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1229 | } |
| 1230 | |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1231 | aio_context_release(aio_context); |
| 1232 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 1233 | info = g_new0(SnapshotInfo, 1); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1234 | info->id = g_strdup(sn.id_str); |
| 1235 | info->name = g_strdup(sn.name); |
| 1236 | info->date_nsec = sn.date_nsec; |
| 1237 | info->date_sec = sn.date_sec; |
| 1238 | info->vm_state_size = sn.vm_state_size; |
| 1239 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1240 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
| 1241 | |
| 1242 | return info; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1243 | |
| 1244 | out_aio_context: |
| 1245 | aio_context_release(aio_context); |
| 1246 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1247 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1248 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1249 | /** |
| 1250 | * block_dirty_bitmap_lookup: |
| 1251 | * Return a dirty bitmap (if present), after validating |
| 1252 | * the node reference and bitmap names. |
| 1253 | * |
| 1254 | * @node: The name of the BDS node to search for bitmaps |
| 1255 | * @name: The name of the bitmap to search for |
| 1256 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1257 | * @errp: Output pointer for error information. Can be NULL. |
| 1258 | * |
| 1259 | * @return: A bitmap object on success, or NULL on failure. |
| 1260 | */ |
| 1261 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, |
| 1262 | const char *name, |
| 1263 | BlockDriverState **pbs, |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1264 | Error **errp) |
| 1265 | { |
| 1266 | BlockDriverState *bs; |
| 1267 | BdrvDirtyBitmap *bitmap; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1268 | |
| 1269 | if (!node) { |
| 1270 | error_setg(errp, "Node cannot be NULL"); |
| 1271 | return NULL; |
| 1272 | } |
| 1273 | if (!name) { |
| 1274 | error_setg(errp, "Bitmap name cannot be NULL"); |
| 1275 | return NULL; |
| 1276 | } |
| 1277 | bs = bdrv_lookup_bs(node, node, NULL); |
| 1278 | if (!bs) { |
| 1279 | error_setg(errp, "Node '%s' not found", node); |
| 1280 | return NULL; |
| 1281 | } |
| 1282 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1283 | bitmap = bdrv_find_dirty_bitmap(bs, name); |
| 1284 | if (!bitmap) { |
| 1285 | error_setg(errp, "Dirty bitmap '%s' not found", name); |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 1286 | return NULL; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1287 | } |
| 1288 | |
| 1289 | if (pbs) { |
| 1290 | *pbs = bs; |
| 1291 | } |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1292 | |
| 1293 | return bitmap; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 1294 | } |
| 1295 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1296 | /* New and old BlockDriverState structs for atomic group operations */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1297 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1298 | typedef struct BlkActionState BlkActionState; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1299 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1300 | /** |
| 1301 | * BlkActionOps: |
| 1302 | * Table of operations that define an Action. |
| 1303 | * |
| 1304 | * @instance_size: Size of state struct, in bytes. |
| 1305 | * @prepare: Prepare the work, must NOT be NULL. |
| 1306 | * @commit: Commit the changes, can be NULL. |
| 1307 | * @abort: Abort the changes on fail, can be NULL. |
| 1308 | * @clean: Clean up resources after all transaction actions have called |
| 1309 | * commit() or abort(). Can be NULL. |
| 1310 | * |
| 1311 | * Only prepare() may fail. In a single transaction, only one of commit() or |
| 1312 | * abort() will be called. clean() will always be called if it is present. |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1313 | */ |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1314 | typedef struct BlkActionOps { |
| 1315 | size_t instance_size; |
| 1316 | void (*prepare)(BlkActionState *common, Error **errp); |
| 1317 | void (*commit)(BlkActionState *common); |
| 1318 | void (*abort)(BlkActionState *common); |
| 1319 | void (*clean)(BlkActionState *common); |
| 1320 | } BlkActionOps; |
| 1321 | |
| 1322 | /** |
| 1323 | * BlkActionState: |
| 1324 | * Describes one Action's state within a Transaction. |
| 1325 | * |
| 1326 | * @action: QAPI-defined enum identifying which Action to perform. |
| 1327 | * @ops: Table of ActionOps this Action can perform. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1328 | * @block_job_txn: Transaction which this action belongs to. |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1329 | * @entry: List membership for all Actions in this Transaction. |
| 1330 | * |
| 1331 | * This structure must be arranged as first member in a subclassed type, |
| 1332 | * assuming that the compiler will also arrange it to the same offsets as the |
| 1333 | * base class. |
| 1334 | */ |
| 1335 | struct BlkActionState { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1336 | TransactionAction *action; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1337 | const BlkActionOps *ops; |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 1338 | JobTxn *block_job_txn; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1339 | TransactionProperties *txn_props; |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 1340 | QTAILQ_ENTRY(BlkActionState) entry; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1341 | }; |
| 1342 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1343 | /* internal snapshot private data */ |
| 1344 | typedef struct InternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1345 | BlkActionState common; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1346 | BlockDriverState *bs; |
| 1347 | QEMUSnapshotInfo sn; |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1348 | bool created; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1349 | } InternalSnapshotState; |
| 1350 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1351 | |
| 1352 | static int action_check_completion_mode(BlkActionState *s, Error **errp) |
| 1353 | { |
| 1354 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 1355 | error_setg(errp, |
| 1356 | "Action '%s' does not support Transaction property " |
| 1357 | "completion-mode = %s", |
Markus Armbruster | 977c736 | 2017-08-24 10:46:08 +0200 | [diff] [blame] | 1358 | TransactionActionKind_str(s->action->type), |
| 1359 | ActionCompletionMode_str(s->txn_props->completion_mode)); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1360 | return -1; |
| 1361 | } |
| 1362 | return 0; |
| 1363 | } |
| 1364 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1365 | static void internal_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1366 | Error **errp) |
| 1367 | { |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1368 | Error *local_err = NULL; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1369 | const char *device; |
| 1370 | const char *name; |
| 1371 | BlockDriverState *bs; |
| 1372 | QEMUSnapshotInfo old_sn, *sn; |
| 1373 | bool ret; |
| 1374 | qemu_timeval tv; |
| 1375 | BlockdevSnapshotInternal *internal; |
| 1376 | InternalSnapshotState *state; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1377 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1378 | int ret1; |
| 1379 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1380 | g_assert(common->action->type == |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1381 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1382 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1383 | state = DO_UPCAST(InternalSnapshotState, common, common); |
| 1384 | |
| 1385 | /* 1. parse input */ |
| 1386 | device = internal->device; |
| 1387 | name = internal->name; |
| 1388 | |
| 1389 | /* 2. check for validation */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1390 | if (action_check_completion_mode(common, errp) < 0) { |
| 1391 | return; |
| 1392 | } |
| 1393 | |
Kevin Wolf | 75dfd40 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1394 | bs = qmp_get_root_bs(device, errp); |
| 1395 | if (!bs) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1396 | return; |
| 1397 | } |
| 1398 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1399 | aio_context = bdrv_get_aio_context(bs); |
| 1400 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1401 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1402 | state->bs = bs; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1403 | |
| 1404 | /* Paired with .clean() */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1405 | bdrv_drained_begin(bs); |
| 1406 | |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1407 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1408 | goto out; |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1409 | } |
| 1410 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1411 | if (bdrv_is_read_only(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1412 | error_setg(errp, "Device '%s' is read only", device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1413 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1414 | } |
| 1415 | |
| 1416 | if (!bdrv_can_snapshot(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1417 | error_setg(errp, "Block format '%s' used by device '%s' " |
| 1418 | "does not support internal snapshots", |
| 1419 | bs->drv->format_name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1420 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1421 | } |
| 1422 | |
| 1423 | if (!strlen(name)) { |
| 1424 | error_setg(errp, "Name is empty"); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1425 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1426 | } |
| 1427 | |
| 1428 | /* check whether a snapshot with name exist */ |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1429 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
| 1430 | &local_err); |
| 1431 | if (local_err) { |
| 1432 | error_propagate(errp, local_err); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1433 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1434 | } else if (ret) { |
| 1435 | error_setg(errp, |
| 1436 | "Snapshot with name '%s' already exists on device '%s'", |
| 1437 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1438 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1439 | } |
| 1440 | |
| 1441 | /* 3. take the snapshot */ |
| 1442 | sn = &state->sn; |
| 1443 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1444 | qemu_gettimeofday(&tv); |
| 1445 | sn->date_sec = tv.tv_sec; |
| 1446 | sn->date_nsec = tv.tv_usec * 1000; |
| 1447 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| 1448 | |
| 1449 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1450 | if (ret1 < 0) { |
| 1451 | error_setg_errno(errp, -ret1, |
| 1452 | "Failed to create snapshot '%s' on device '%s'", |
| 1453 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1454 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1455 | } |
| 1456 | |
| 1457 | /* 4. succeed, mark a snapshot is created */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1458 | state->created = true; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1459 | |
| 1460 | out: |
| 1461 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1462 | } |
| 1463 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1464 | static void internal_snapshot_abort(BlkActionState *common) |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1465 | { |
| 1466 | InternalSnapshotState *state = |
| 1467 | DO_UPCAST(InternalSnapshotState, common, common); |
| 1468 | BlockDriverState *bs = state->bs; |
| 1469 | QEMUSnapshotInfo *sn = &state->sn; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1470 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1471 | Error *local_error = NULL; |
| 1472 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1473 | if (!state->created) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1474 | return; |
| 1475 | } |
| 1476 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1477 | aio_context = bdrv_get_aio_context(state->bs); |
| 1478 | aio_context_acquire(aio_context); |
| 1479 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1480 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { |
Markus Armbruster | c29b77f | 2015-12-18 16:35:14 +0100 | [diff] [blame] | 1481 | error_reportf_err(local_error, |
| 1482 | "Failed to delete snapshot with id '%s' and " |
| 1483 | "name '%s' on device '%s' in abort: ", |
| 1484 | sn->id_str, sn->name, |
| 1485 | bdrv_get_device_name(bs)); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1486 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1487 | |
| 1488 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1489 | } |
| 1490 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1491 | static void internal_snapshot_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1492 | { |
| 1493 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, |
| 1494 | common, common); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1495 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1496 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1497 | if (!state->bs) { |
| 1498 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1499 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1500 | |
| 1501 | aio_context = bdrv_get_aio_context(state->bs); |
| 1502 | aio_context_acquire(aio_context); |
| 1503 | |
| 1504 | bdrv_drained_end(state->bs); |
| 1505 | |
| 1506 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1507 | } |
| 1508 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1509 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1510 | typedef struct ExternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1511 | BlkActionState common; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1512 | BlockDriverState *old_bs; |
| 1513 | BlockDriverState *new_bs; |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1514 | bool overlay_appended; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1515 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1516 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1517 | static void external_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1518 | Error **errp) |
| 1519 | { |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1520 | int flags = 0; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1521 | QDict *options = NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1522 | Error *local_err = NULL; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1523 | /* Device and node name of the image to generate the snapshot from */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1524 | const char *device; |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1525 | const char *node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1526 | /* Reference to the new image (for 'blockdev-snapshot') */ |
| 1527 | const char *snapshot_ref; |
| 1528 | /* File name of the new image (for 'blockdev-snapshot-sync') */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1529 | const char *new_image_file; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1530 | ExternalSnapshotState *state = |
| 1531 | DO_UPCAST(ExternalSnapshotState, common, common); |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1532 | TransactionAction *action = common->action; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1533 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1534 | AioContext *old_context; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 1535 | int ret; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1536 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1537 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
| 1538 | * purpose but a different set of parameters */ |
| 1539 | switch (action->type) { |
| 1540 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 1541 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1542 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1543 | device = s->node; |
| 1544 | node_name = s->node; |
| 1545 | new_image_file = NULL; |
| 1546 | snapshot_ref = s->overlay; |
| 1547 | } |
| 1548 | break; |
| 1549 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 1550 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1551 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1552 | device = s->has_device ? s->device : NULL; |
| 1553 | node_name = s->has_node_name ? s->node_name : NULL; |
| 1554 | new_image_file = s->snapshot_file; |
| 1555 | snapshot_ref = NULL; |
| 1556 | } |
| 1557 | break; |
| 1558 | default: |
| 1559 | g_assert_not_reached(); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1560 | } |
| 1561 | |
| 1562 | /* start processing */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1563 | if (action_check_completion_mode(common, errp) < 0) { |
| 1564 | return; |
| 1565 | } |
| 1566 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1567 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
| 1568 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1569 | return; |
| 1570 | } |
| 1571 | |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1572 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1573 | aio_context_acquire(aio_context); |
| 1574 | |
| 1575 | /* Paired with .clean() */ |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1576 | bdrv_drained_begin(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1577 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1578 | if (!bdrv_is_inserted(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1579 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1580 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1581 | } |
| 1582 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 1583 | if (bdrv_op_is_blocked(state->old_bs, |
| 1584 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1585 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1586 | } |
| 1587 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1588 | if (!bdrv_is_read_only(state->old_bs)) { |
| 1589 | if (bdrv_flush(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1590 | error_setg(errp, QERR_IO_ERROR); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1591 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1592 | } |
| 1593 | } |
| 1594 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1595 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1596 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1597 | const char *format = s->has_format ? s->format : "qcow2"; |
| 1598 | enum NewImageMode mode; |
| 1599 | const char *snapshot_node_name = |
| 1600 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1601 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1602 | if (node_name && !snapshot_node_name) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1603 | error_setg(errp, "New overlay node name missing"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1604 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1605 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1606 | |
| 1607 | if (snapshot_node_name && |
| 1608 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1609 | error_setg(errp, "New overlay node name already in use"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1610 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1611 | } |
| 1612 | |
| 1613 | flags = state->old_bs->open_flags; |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 1614 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_COPY_ON_READ); |
| 1615 | flags |= BDRV_O_NO_BACKING; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1616 | |
| 1617 | /* create new image w/backing file */ |
| 1618 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1619 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1620 | int64_t size = bdrv_getlength(state->old_bs); |
| 1621 | if (size < 0) { |
| 1622 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1623 | goto out; |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1624 | } |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 1625 | bdrv_refresh_filename(state->old_bs); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1626 | bdrv_img_create(new_image_file, format, |
| 1627 | state->old_bs->filename, |
| 1628 | state->old_bs->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 1629 | NULL, size, flags, false, &local_err); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1630 | if (local_err) { |
| 1631 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1632 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1633 | } |
| 1634 | } |
| 1635 | |
| 1636 | options = qdict_new(); |
Peter Maydell | d52e1a0 | 2018-11-01 16:30:37 +0000 | [diff] [blame] | 1637 | if (snapshot_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1638 | qdict_put_str(options, "node-name", snapshot_node_name); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1639 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1640 | qdict_put_str(options, "driver", format); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1641 | } |
| 1642 | |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1643 | state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags, |
| 1644 | errp); |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1645 | /* We will manually add the backing_hd field to the bs later */ |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1646 | if (!state->new_bs) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1647 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1648 | } |
| 1649 | |
Kevin Wolf | 1f0c461 | 2016-03-22 18:38:44 +0100 | [diff] [blame] | 1650 | if (bdrv_has_blk(state->new_bs)) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1651 | error_setg(errp, "The overlay is already in use"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1652 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1653 | } |
| 1654 | |
| 1655 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, |
| 1656 | errp)) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1657 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1658 | } |
| 1659 | |
| 1660 | if (state->new_bs->backing != NULL) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1661 | error_setg(errp, "The overlay already has a backing image"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1662 | goto out; |
Alberto Garcia | 08b24cf | 2015-11-03 12:32:35 +0200 | [diff] [blame] | 1663 | } |
| 1664 | |
| 1665 | if (!state->new_bs->drv->supports_backing) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1666 | error_setg(errp, "The overlay does not support backing images"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1667 | goto out; |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1668 | } |
| 1669 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1670 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 1671 | old_context = bdrv_get_aio_context(state->new_bs); |
| 1672 | aio_context_release(aio_context); |
| 1673 | aio_context_acquire(old_context); |
| 1674 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 1675 | ret = bdrv_try_set_aio_context(state->new_bs, aio_context, errp); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1676 | |
| 1677 | aio_context_release(old_context); |
| 1678 | aio_context_acquire(aio_context); |
| 1679 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 1680 | if (ret < 0) { |
| 1681 | goto out; |
| 1682 | } |
Fam Zheng | c26a5ab | 2017-04-07 14:54:09 +0800 | [diff] [blame] | 1683 | |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1684 | /* This removes our old bs and adds the new bs. This is an operation that |
| 1685 | * can fail, so we need to do it in .prepare; undoing it for abort is |
| 1686 | * always possible. */ |
| 1687 | bdrv_ref(state->new_bs); |
| 1688 | bdrv_append(state->new_bs, state->old_bs, &local_err); |
| 1689 | if (local_err) { |
| 1690 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1691 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1692 | } |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1693 | state->overlay_appended = true; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1694 | |
| 1695 | out: |
| 1696 | aio_context_release(aio_context); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1697 | } |
| 1698 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1699 | static void external_snapshot_commit(BlkActionState *common) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1700 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1701 | ExternalSnapshotState *state = |
| 1702 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1703 | AioContext *aio_context; |
| 1704 | |
| 1705 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1706 | aio_context_acquire(aio_context); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1707 | |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1708 | /* We don't need (or want) to use the transactional |
| 1709 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1710 | * don't want to abort all of them if one of them fails the reopen */ |
Paolo Bonzini | d3faa13 | 2017-06-05 14:38:50 +0200 | [diff] [blame] | 1711 | if (!atomic_read(&state->old_bs->copy_on_read)) { |
Alberto Garcia | 1b57774 | 2018-11-12 16:00:39 +0200 | [diff] [blame] | 1712 | bdrv_reopen_set_read_only(state->old_bs, true, NULL); |
Kevin Wolf | 4c84498 | 2016-02-29 13:12:26 +0100 | [diff] [blame] | 1713 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1714 | |
| 1715 | aio_context_release(aio_context); |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1716 | } |
| 1717 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1718 | static void external_snapshot_abort(BlkActionState *common) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1719 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1720 | ExternalSnapshotState *state = |
| 1721 | DO_UPCAST(ExternalSnapshotState, common, common); |
| 1722 | if (state->new_bs) { |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1723 | if (state->overlay_appended) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1724 | AioContext *aio_context; |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1725 | AioContext *tmp_context; |
| 1726 | int ret; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1727 | |
| 1728 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1729 | aio_context_acquire(aio_context); |
| 1730 | |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1731 | bdrv_ref(state->old_bs); /* we can't let bdrv_set_backind_hd() |
| 1732 | close state->old_bs; we need it */ |
| 1733 | bdrv_set_backing_hd(state->new_bs, NULL, &error_abort); |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1734 | |
| 1735 | /* |
| 1736 | * The call to bdrv_set_backing_hd() above returns state->old_bs to |
| 1737 | * the main AioContext. As we're still going to be using it, return |
| 1738 | * it to the AioContext it was before. |
| 1739 | */ |
| 1740 | tmp_context = bdrv_get_aio_context(state->old_bs); |
| 1741 | if (aio_context != tmp_context) { |
| 1742 | aio_context_release(aio_context); |
| 1743 | aio_context_acquire(tmp_context); |
| 1744 | |
| 1745 | ret = bdrv_try_set_aio_context(state->old_bs, |
| 1746 | aio_context, NULL); |
| 1747 | assert(ret == 0); |
| 1748 | |
| 1749 | aio_context_release(tmp_context); |
| 1750 | aio_context_acquire(aio_context); |
| 1751 | } |
| 1752 | |
Kevin Wolf | 5fe31c2 | 2017-03-06 16:20:51 +0100 | [diff] [blame] | 1753 | bdrv_replace_node(state->new_bs, state->old_bs, &error_abort); |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1754 | bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */ |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1755 | |
| 1756 | aio_context_release(aio_context); |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1757 | } |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1758 | } |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1759 | } |
| 1760 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1761 | static void external_snapshot_clean(BlkActionState *common) |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1762 | { |
| 1763 | ExternalSnapshotState *state = |
| 1764 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1765 | AioContext *aio_context; |
| 1766 | |
| 1767 | if (!state->old_bs) { |
| 1768 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1769 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1770 | |
| 1771 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1772 | aio_context_acquire(aio_context); |
| 1773 | |
| 1774 | bdrv_drained_end(state->old_bs); |
| 1775 | bdrv_unref(state->new_bs); |
| 1776 | |
| 1777 | aio_context_release(aio_context); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1778 | } |
| 1779 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1780 | typedef struct DriveBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1781 | BlkActionState common; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1782 | BlockDriverState *bs; |
| 1783 | BlockJob *job; |
| 1784 | } DriveBackupState; |
| 1785 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1786 | static BlockJob *do_backup_common(BackupCommon *backup, |
| 1787 | BlockDriverState *bs, |
| 1788 | BlockDriverState *target_bs, |
| 1789 | AioContext *aio_context, |
| 1790 | JobTxn *txn, Error **errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1791 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1792 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1793 | { |
| 1794 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1795 | DriveBackup *backup; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1796 | BlockDriverState *bs; |
| 1797 | BlockDriverState *target_bs; |
| 1798 | BlockDriverState *source = NULL; |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1799 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1800 | AioContext *old_context; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1801 | QDict *options; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1802 | Error *local_err = NULL; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1803 | int flags; |
| 1804 | int64_t size; |
| 1805 | bool set_backing_hd = false; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1806 | int ret; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1807 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1808 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1809 | backup = common->action->u.drive_backup.data; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1810 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1811 | if (!backup->has_mode) { |
| 1812 | backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1813 | } |
| 1814 | |
Vladimir Sementsov-Ogievskiy | 85c9d13 | 2019-06-18 17:08:04 +0300 | [diff] [blame] | 1815 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1816 | if (!bs) { |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1817 | return; |
| 1818 | } |
| 1819 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1820 | if (!bs->drv) { |
| 1821 | error_setg(errp, "Device has no medium"); |
| 1822 | return; |
| 1823 | } |
| 1824 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1825 | aio_context = bdrv_get_aio_context(bs); |
| 1826 | aio_context_acquire(aio_context); |
| 1827 | |
| 1828 | /* Paired with .clean() */ |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1829 | bdrv_drained_begin(bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1830 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1831 | if (!backup->has_format) { |
| 1832 | backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ? |
| 1833 | NULL : (char *) bs->drv->format_name; |
| 1834 | } |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1835 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1836 | /* Early check to avoid creating target */ |
| 1837 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
| 1838 | goto out; |
| 1839 | } |
| 1840 | |
| 1841 | flags = bs->open_flags | BDRV_O_RDWR; |
| 1842 | |
| 1843 | /* |
| 1844 | * See if we have a backing HD we can use to create our new image |
| 1845 | * on top of. |
| 1846 | */ |
| 1847 | if (backup->sync == MIRROR_SYNC_MODE_TOP) { |
| 1848 | source = backing_bs(bs); |
| 1849 | if (!source) { |
| 1850 | backup->sync = MIRROR_SYNC_MODE_FULL; |
| 1851 | } |
| 1852 | } |
| 1853 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
| 1854 | source = bs; |
| 1855 | flags |= BDRV_O_NO_BACKING; |
| 1856 | set_backing_hd = true; |
| 1857 | } |
| 1858 | |
| 1859 | size = bdrv_getlength(bs); |
| 1860 | if (size < 0) { |
| 1861 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
| 1862 | goto out; |
| 1863 | } |
| 1864 | |
| 1865 | if (backup->mode != NEW_IMAGE_MODE_EXISTING) { |
| 1866 | assert(backup->format); |
| 1867 | if (source) { |
| 1868 | bdrv_refresh_filename(source); |
| 1869 | bdrv_img_create(backup->target, backup->format, source->filename, |
| 1870 | source->drv->format_name, NULL, |
| 1871 | size, flags, false, &local_err); |
| 1872 | } else { |
| 1873 | bdrv_img_create(backup->target, backup->format, NULL, NULL, NULL, |
| 1874 | size, flags, false, &local_err); |
| 1875 | } |
| 1876 | } |
| 1877 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1878 | if (local_err) { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1879 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1880 | goto out; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1881 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1882 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1883 | options = qdict_new(); |
| 1884 | qdict_put_str(options, "discard", "unmap"); |
| 1885 | qdict_put_str(options, "detect-zeroes", "unmap"); |
| 1886 | if (backup->format) { |
| 1887 | qdict_put_str(options, "driver", backup->format); |
| 1888 | } |
| 1889 | |
| 1890 | target_bs = bdrv_open(backup->target, NULL, options, flags, errp); |
| 1891 | if (!target_bs) { |
| 1892 | goto out; |
| 1893 | } |
| 1894 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1895 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 1896 | old_context = bdrv_get_aio_context(target_bs); |
| 1897 | aio_context_release(aio_context); |
| 1898 | aio_context_acquire(old_context); |
| 1899 | |
| 1900 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
| 1901 | if (ret < 0) { |
| 1902 | bdrv_unref(target_bs); |
| 1903 | aio_context_release(old_context); |
| 1904 | return; |
| 1905 | } |
| 1906 | |
| 1907 | aio_context_release(old_context); |
| 1908 | aio_context_acquire(aio_context); |
| 1909 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1910 | if (set_backing_hd) { |
| 1911 | bdrv_set_backing_hd(target_bs, source, &local_err); |
| 1912 | if (local_err) { |
| 1913 | goto unref; |
| 1914 | } |
| 1915 | } |
| 1916 | |
| 1917 | state->bs = bs; |
| 1918 | |
| 1919 | state->job = do_backup_common(qapi_DriveBackup_base(backup), |
| 1920 | bs, target_bs, aio_context, |
| 1921 | common->block_job_txn, errp); |
| 1922 | |
| 1923 | unref: |
| 1924 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1925 | out: |
| 1926 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1927 | } |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1928 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1929 | static void drive_backup_commit(BlkActionState *common) |
| 1930 | { |
| 1931 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1932 | AioContext *aio_context; |
| 1933 | |
| 1934 | aio_context = bdrv_get_aio_context(state->bs); |
| 1935 | aio_context_acquire(aio_context); |
| 1936 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1937 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 1938 | job_start(&state->job->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1939 | |
| 1940 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1941 | } |
| 1942 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1943 | static void drive_backup_abort(BlkActionState *common) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1944 | { |
| 1945 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1946 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1947 | if (state->job) { |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1948 | AioContext *aio_context; |
| 1949 | |
| 1950 | aio_context = bdrv_get_aio_context(state->bs); |
| 1951 | aio_context_acquire(aio_context); |
| 1952 | |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 1953 | job_cancel_sync(&state->job->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1954 | |
| 1955 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1956 | } |
| 1957 | } |
| 1958 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1959 | static void drive_backup_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1960 | { |
| 1961 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1962 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1963 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1964 | if (!state->bs) { |
| 1965 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1966 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1967 | |
| 1968 | aio_context = bdrv_get_aio_context(state->bs); |
| 1969 | aio_context_acquire(aio_context); |
| 1970 | |
| 1971 | bdrv_drained_end(state->bs); |
| 1972 | |
| 1973 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1974 | } |
| 1975 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1976 | typedef struct BlockdevBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1977 | BlkActionState common; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1978 | BlockDriverState *bs; |
| 1979 | BlockJob *job; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1980 | } BlockdevBackupState; |
| 1981 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1982 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1983 | { |
| 1984 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1985 | BlockdevBackup *backup; |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1986 | BlockDriverState *bs; |
| 1987 | BlockDriverState *target_bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1988 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1989 | AioContext *old_context; |
| 1990 | int ret; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1991 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1992 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1993 | backup = common->action->u.blockdev_backup.data; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1994 | |
Vladimir Sementsov-Ogievskiy | 930fe17 | 2018-07-02 15:46:29 -0400 | [diff] [blame] | 1995 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1996 | if (!bs) { |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1997 | return; |
| 1998 | } |
| 1999 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 2000 | target_bs = bdrv_lookup_bs(backup->target, backup->target, errp); |
| 2001 | if (!target_bs) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2002 | return; |
| 2003 | } |
| 2004 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 2005 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2006 | aio_context = bdrv_get_aio_context(bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 2007 | old_context = bdrv_get_aio_context(target_bs); |
| 2008 | aio_context_acquire(old_context); |
| 2009 | |
| 2010 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
| 2011 | if (ret < 0) { |
| 2012 | aio_context_release(old_context); |
| 2013 | return; |
| 2014 | } |
| 2015 | |
| 2016 | aio_context_release(old_context); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2017 | aio_context_acquire(aio_context); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2018 | state->bs = bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2019 | |
| 2020 | /* Paired with .clean() */ |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 2021 | bdrv_drained_begin(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2022 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 2023 | state->job = do_backup_common(qapi_BlockdevBackup_base(backup), |
| 2024 | bs, target_bs, aio_context, |
| 2025 | common->block_job_txn, errp); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2026 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2027 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2028 | } |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2029 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2030 | static void blockdev_backup_commit(BlkActionState *common) |
| 2031 | { |
| 2032 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2033 | AioContext *aio_context; |
| 2034 | |
| 2035 | aio_context = bdrv_get_aio_context(state->bs); |
| 2036 | aio_context_acquire(aio_context); |
| 2037 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2038 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 2039 | job_start(&state->job->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2040 | |
| 2041 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2042 | } |
| 2043 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2044 | static void blockdev_backup_abort(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2045 | { |
| 2046 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2047 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2048 | if (state->job) { |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2049 | AioContext *aio_context; |
| 2050 | |
| 2051 | aio_context = bdrv_get_aio_context(state->bs); |
| 2052 | aio_context_acquire(aio_context); |
| 2053 | |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 2054 | job_cancel_sync(&state->job->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2055 | |
| 2056 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2057 | } |
| 2058 | } |
| 2059 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2060 | static void blockdev_backup_clean(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2061 | { |
| 2062 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2063 | AioContext *aio_context; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2064 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2065 | if (!state->bs) { |
| 2066 | return; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2067 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 2068 | |
| 2069 | aio_context = bdrv_get_aio_context(state->bs); |
| 2070 | aio_context_acquire(aio_context); |
| 2071 | |
| 2072 | bdrv_drained_end(state->bs); |
| 2073 | |
| 2074 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2075 | } |
| 2076 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2077 | typedef struct BlockDirtyBitmapState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2078 | BlkActionState common; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2079 | BdrvDirtyBitmap *bitmap; |
| 2080 | BlockDriverState *bs; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2081 | HBitmap *backup; |
| 2082 | bool prepared; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2083 | bool was_enabled; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2084 | } BlockDirtyBitmapState; |
| 2085 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2086 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2087 | Error **errp) |
| 2088 | { |
| 2089 | Error *local_err = NULL; |
| 2090 | BlockDirtyBitmapAdd *action; |
| 2091 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2092 | common, common); |
| 2093 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2094 | if (action_check_completion_mode(common, errp) < 0) { |
| 2095 | return; |
| 2096 | } |
| 2097 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2098 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2099 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
| 2100 | qmp_block_dirty_bitmap_add(action->node, action->name, |
| 2101 | action->has_granularity, action->granularity, |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2102 | action->has_persistent, action->persistent, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2103 | action->has_disabled, action->disabled, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2104 | &local_err); |
| 2105 | |
| 2106 | if (!local_err) { |
| 2107 | state->prepared = true; |
| 2108 | } else { |
| 2109 | error_propagate(errp, local_err); |
| 2110 | } |
| 2111 | } |
| 2112 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2113 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2114 | { |
| 2115 | BlockDirtyBitmapAdd *action; |
| 2116 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2117 | common, common); |
| 2118 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2119 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2120 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
| 2121 | * then the node reference and bitmap name must have been valid. |
| 2122 | */ |
| 2123 | if (state->prepared) { |
| 2124 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); |
| 2125 | } |
| 2126 | } |
| 2127 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2128 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2129 | Error **errp) |
| 2130 | { |
| 2131 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2132 | common, common); |
| 2133 | BlockDirtyBitmap *action; |
| 2134 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2135 | if (action_check_completion_mode(common, errp) < 0) { |
| 2136 | return; |
| 2137 | } |
| 2138 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2139 | action = common->action->u.block_dirty_bitmap_clear.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2140 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2141 | action->name, |
| 2142 | &state->bs, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2143 | errp); |
| 2144 | if (!state->bitmap) { |
| 2145 | return; |
| 2146 | } |
| 2147 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 2148 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_DEFAULT, errp)) { |
Vladimir Sementsov-Ogievskiy | d6883bc | 2017-06-28 15:05:10 +0300 | [diff] [blame] | 2149 | return; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2150 | } |
| 2151 | |
| 2152 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2153 | } |
| 2154 | |
Vladimir Sementsov-Ogievskiy | 5c4cf8b | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2155 | static void block_dirty_bitmap_restore(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2156 | { |
| 2157 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2158 | common, common); |
| 2159 | |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 2160 | if (state->backup) { |
Vladimir Sementsov-Ogievskiy | 56bd662 | 2018-10-29 16:23:14 -0400 | [diff] [blame] | 2161 | bdrv_restore_dirty_bitmap(state->bitmap, state->backup); |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 2162 | } |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2163 | } |
| 2164 | |
Vladimir Sementsov-Ogievskiy | 5c4cf8b | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2165 | static void block_dirty_bitmap_free_backup(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2166 | { |
| 2167 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2168 | common, common); |
| 2169 | |
| 2170 | hbitmap_free(state->backup); |
| 2171 | } |
| 2172 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2173 | static void block_dirty_bitmap_enable_prepare(BlkActionState *common, |
| 2174 | Error **errp) |
| 2175 | { |
| 2176 | BlockDirtyBitmap *action; |
| 2177 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2178 | common, common); |
| 2179 | |
| 2180 | if (action_check_completion_mode(common, errp) < 0) { |
| 2181 | return; |
| 2182 | } |
| 2183 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2184 | action = common->action->u.block_dirty_bitmap_enable.data; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2185 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2186 | action->name, |
| 2187 | NULL, |
| 2188 | errp); |
| 2189 | if (!state->bitmap) { |
| 2190 | return; |
| 2191 | } |
| 2192 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 2193 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | b053bb5 | 2018-10-29 16:23:16 -0400 | [diff] [blame] | 2194 | return; |
| 2195 | } |
| 2196 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2197 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 2198 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 2199 | } |
| 2200 | |
| 2201 | static void block_dirty_bitmap_enable_abort(BlkActionState *common) |
| 2202 | { |
| 2203 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2204 | common, common); |
| 2205 | |
| 2206 | if (!state->was_enabled) { |
| 2207 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 2208 | } |
| 2209 | } |
| 2210 | |
| 2211 | static void block_dirty_bitmap_disable_prepare(BlkActionState *common, |
| 2212 | Error **errp) |
| 2213 | { |
| 2214 | BlockDirtyBitmap *action; |
| 2215 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2216 | common, common); |
| 2217 | |
| 2218 | if (action_check_completion_mode(common, errp) < 0) { |
| 2219 | return; |
| 2220 | } |
| 2221 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2222 | action = common->action->u.block_dirty_bitmap_disable.data; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2223 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2224 | action->name, |
| 2225 | NULL, |
| 2226 | errp); |
| 2227 | if (!state->bitmap) { |
| 2228 | return; |
| 2229 | } |
| 2230 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 2231 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | b053bb5 | 2018-10-29 16:23:16 -0400 | [diff] [blame] | 2232 | return; |
| 2233 | } |
| 2234 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2235 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 2236 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 2237 | } |
| 2238 | |
| 2239 | static void block_dirty_bitmap_disable_abort(BlkActionState *common) |
| 2240 | { |
| 2241 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2242 | common, common); |
| 2243 | |
| 2244 | if (state->was_enabled) { |
| 2245 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 2246 | } |
| 2247 | } |
| 2248 | |
Vladimir Sementsov-Ogievskiy | eff0829 | 2019-05-28 19:33:31 -0400 | [diff] [blame] | 2249 | static BdrvDirtyBitmap *do_block_dirty_bitmap_merge( |
| 2250 | const char *node, const char *target, |
| 2251 | BlockDirtyBitmapMergeSourceList *bitmaps, |
| 2252 | HBitmap **backup, Error **errp); |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 2253 | |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2254 | static void block_dirty_bitmap_merge_prepare(BlkActionState *common, |
| 2255 | Error **errp) |
| 2256 | { |
| 2257 | BlockDirtyBitmapMerge *action; |
| 2258 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2259 | common, common); |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2260 | |
| 2261 | if (action_check_completion_mode(common, errp) < 0) { |
| 2262 | return; |
| 2263 | } |
| 2264 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2265 | action = common->action->u.block_dirty_bitmap_merge.data; |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2266 | |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 2267 | state->bitmap = do_block_dirty_bitmap_merge(action->node, action->target, |
| 2268 | action->bitmaps, &state->backup, |
| 2269 | errp); |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2270 | } |
| 2271 | |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2272 | static BdrvDirtyBitmap *do_block_dirty_bitmap_remove( |
| 2273 | const char *node, const char *name, bool release, |
| 2274 | BlockDriverState **bitmap_bs, Error **errp); |
| 2275 | |
| 2276 | static void block_dirty_bitmap_remove_prepare(BlkActionState *common, |
| 2277 | Error **errp) |
| 2278 | { |
| 2279 | BlockDirtyBitmap *action; |
| 2280 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2281 | common, common); |
| 2282 | |
| 2283 | if (action_check_completion_mode(common, errp) < 0) { |
| 2284 | return; |
| 2285 | } |
| 2286 | |
| 2287 | action = common->action->u.block_dirty_bitmap_remove.data; |
| 2288 | |
| 2289 | state->bitmap = do_block_dirty_bitmap_remove(action->node, action->name, |
| 2290 | false, &state->bs, errp); |
| 2291 | if (state->bitmap) { |
| 2292 | bdrv_dirty_bitmap_skip_store(state->bitmap, true); |
| 2293 | bdrv_dirty_bitmap_set_busy(state->bitmap, true); |
| 2294 | } |
| 2295 | } |
| 2296 | |
| 2297 | static void block_dirty_bitmap_remove_abort(BlkActionState *common) |
| 2298 | { |
| 2299 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2300 | common, common); |
| 2301 | |
| 2302 | if (state->bitmap) { |
| 2303 | bdrv_dirty_bitmap_skip_store(state->bitmap, false); |
| 2304 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); |
| 2305 | } |
| 2306 | } |
| 2307 | |
| 2308 | static void block_dirty_bitmap_remove_commit(BlkActionState *common) |
| 2309 | { |
| 2310 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2311 | common, common); |
| 2312 | |
| 2313 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); |
Vladimir Sementsov-Ogievskiy | 5deb6cb | 2019-09-16 17:19:09 +0300 | [diff] [blame] | 2314 | bdrv_release_dirty_bitmap(state->bitmap); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2315 | } |
| 2316 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2317 | static void abort_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2318 | { |
| 2319 | error_setg(errp, "Transaction aborted using Abort action"); |
| 2320 | } |
| 2321 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2322 | static void abort_commit(BlkActionState *common) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2323 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 2324 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2325 | } |
| 2326 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2327 | static const BlkActionOps actions[] = { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2328 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
| 2329 | .instance_size = sizeof(ExternalSnapshotState), |
| 2330 | .prepare = external_snapshot_prepare, |
| 2331 | .commit = external_snapshot_commit, |
| 2332 | .abort = external_snapshot_abort, |
Alberto Garcia | 4ad6f3d | 2015-11-13 15:00:24 +0200 | [diff] [blame] | 2333 | .clean = external_snapshot_clean, |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2334 | }, |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2335 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2336 | .instance_size = sizeof(ExternalSnapshotState), |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2337 | .prepare = external_snapshot_prepare, |
| 2338 | .commit = external_snapshot_commit, |
| 2339 | .abort = external_snapshot_abort, |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 2340 | .clean = external_snapshot_clean, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2341 | }, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2342 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
| 2343 | .instance_size = sizeof(DriveBackupState), |
| 2344 | .prepare = drive_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2345 | .commit = drive_backup_commit, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2346 | .abort = drive_backup_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2347 | .clean = drive_backup_clean, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2348 | }, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2349 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
| 2350 | .instance_size = sizeof(BlockdevBackupState), |
| 2351 | .prepare = blockdev_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2352 | .commit = blockdev_backup_commit, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2353 | .abort = blockdev_backup_abort, |
| 2354 | .clean = blockdev_backup_clean, |
| 2355 | }, |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2356 | [TRANSACTION_ACTION_KIND_ABORT] = { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2357 | .instance_size = sizeof(BlkActionState), |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2358 | .prepare = abort_prepare, |
| 2359 | .commit = abort_commit, |
| 2360 | }, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2361 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
| 2362 | .instance_size = sizeof(InternalSnapshotState), |
| 2363 | .prepare = internal_snapshot_prepare, |
| 2364 | .abort = internal_snapshot_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2365 | .clean = internal_snapshot_clean, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2366 | }, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2367 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
| 2368 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2369 | .prepare = block_dirty_bitmap_add_prepare, |
| 2370 | .abort = block_dirty_bitmap_add_abort, |
| 2371 | }, |
| 2372 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { |
| 2373 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2374 | .prepare = block_dirty_bitmap_clear_prepare, |
Vladimir Sementsov-Ogievskiy | 5c4cf8b | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2375 | .commit = block_dirty_bitmap_free_backup, |
| 2376 | .abort = block_dirty_bitmap_restore, |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2377 | }, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2378 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ENABLE] = { |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2379 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2380 | .prepare = block_dirty_bitmap_enable_prepare, |
| 2381 | .abort = block_dirty_bitmap_enable_abort, |
| 2382 | }, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2383 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_DISABLE] = { |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2384 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2385 | .prepare = block_dirty_bitmap_disable_prepare, |
| 2386 | .abort = block_dirty_bitmap_disable_abort, |
John Snow | 66da04d | 2018-09-06 09:02:25 -0400 | [diff] [blame] | 2387 | }, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2388 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_MERGE] = { |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2389 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2390 | .prepare = block_dirty_bitmap_merge_prepare, |
| 2391 | .commit = block_dirty_bitmap_free_backup, |
| 2392 | .abort = block_dirty_bitmap_restore, |
| 2393 | }, |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2394 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_REMOVE] = { |
| 2395 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2396 | .prepare = block_dirty_bitmap_remove_prepare, |
| 2397 | .commit = block_dirty_bitmap_remove_commit, |
| 2398 | .abort = block_dirty_bitmap_remove_abort, |
| 2399 | }, |
John Snow | 66da04d | 2018-09-06 09:02:25 -0400 | [diff] [blame] | 2400 | /* Where are transactions for MIRROR, COMMIT and STREAM? |
| 2401 | * Although these blockjobs use transaction callbacks like the backup job, |
| 2402 | * these jobs do not necessarily adhere to transaction semantics. |
| 2403 | * These jobs may not fully undo all of their actions on abort, nor do they |
| 2404 | * necessarily work in transactions with more than one job in them. |
| 2405 | */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2406 | }; |
| 2407 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2408 | /** |
| 2409 | * Allocate a TransactionProperties structure if necessary, and fill |
| 2410 | * that structure with desired defaults if they are unset. |
| 2411 | */ |
| 2412 | static TransactionProperties *get_transaction_properties( |
| 2413 | TransactionProperties *props) |
| 2414 | { |
| 2415 | if (!props) { |
| 2416 | props = g_new0(TransactionProperties, 1); |
| 2417 | } |
| 2418 | |
| 2419 | if (!props->has_completion_mode) { |
| 2420 | props->has_completion_mode = true; |
| 2421 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; |
| 2422 | } |
| 2423 | |
| 2424 | return props; |
| 2425 | } |
| 2426 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2427 | /* |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2428 | * 'Atomic' group operations. The operations are performed as a set, and if |
| 2429 | * any fail then we roll back all operations in the group. |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2430 | */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2431 | void qmp_transaction(TransactionActionList *dev_list, |
| 2432 | bool has_props, |
| 2433 | struct TransactionProperties *props, |
| 2434 | Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2435 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2436 | TransactionActionList *dev_entry = dev_list; |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2437 | JobTxn *block_job_txn = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2438 | BlkActionState *state, *next; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 2439 | Error *local_err = NULL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2440 | |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2441 | QTAILQ_HEAD(, BlkActionState) snap_bdrv_states; |
| 2442 | QTAILQ_INIT(&snap_bdrv_states); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2443 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2444 | /* Does this transaction get canceled as a group on failure? |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2445 | * If not, we don't really need to make a JobTxn. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2446 | */ |
| 2447 | props = get_transaction_properties(props); |
| 2448 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2449 | block_job_txn = job_txn_new(); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2450 | } |
| 2451 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2452 | /* drain all i/o before any operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2453 | bdrv_drain_all(); |
| 2454 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2455 | /* We don't do anything in this loop that commits us to the operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2456 | while (NULL != dev_entry) { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2457 | TransactionAction *dev_info = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2458 | const BlkActionOps *ops; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2459 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2460 | dev_info = dev_entry->value; |
| 2461 | dev_entry = dev_entry->next; |
| 2462 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2463 | assert(dev_info->type < ARRAY_SIZE(actions)); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2464 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2465 | ops = &actions[dev_info->type]; |
Max Reitz | aa3fe71 | 2013-09-12 14:57:27 +0200 | [diff] [blame] | 2466 | assert(ops->instance_size > 0); |
| 2467 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2468 | state = g_malloc0(ops->instance_size); |
| 2469 | state->ops = ops; |
| 2470 | state->action = dev_info; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2471 | state->block_job_txn = block_job_txn; |
| 2472 | state->txn_props = props; |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2473 | QTAILQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2474 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2475 | state->ops->prepare(state, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2476 | if (local_err) { |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2477 | error_propagate(errp, local_err); |
| 2478 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2479 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2480 | } |
| 2481 | |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2482 | QTAILQ_FOREACH(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 2483 | if (state->ops->commit) { |
| 2484 | state->ops->commit(state); |
| 2485 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2486 | } |
| 2487 | |
| 2488 | /* success */ |
| 2489 | goto exit; |
| 2490 | |
| 2491 | delete_and_fail: |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2492 | /* failure, and it is all-or-none; roll back all operations */ |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2493 | QTAILQ_FOREACH_REVERSE(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2494 | if (state->ops->abort) { |
| 2495 | state->ops->abort(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2496 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2497 | } |
| 2498 | exit: |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2499 | QTAILQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2500 | if (state->ops->clean) { |
| 2501 | state->ops->clean(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2502 | } |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2503 | g_free(state); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2504 | } |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2505 | if (!has_props) { |
| 2506 | qapi_free_TransactionProperties(props); |
| 2507 | } |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2508 | job_txn_unref(block_job_txn); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2509 | } |
| 2510 | |
Kevin Wolf | fbe2d81 | 2016-09-20 13:38:46 +0200 | [diff] [blame] | 2511 | void qmp_eject(bool has_device, const char *device, |
| 2512 | bool has_id, const char *id, |
| 2513 | bool has_force, bool force, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2514 | { |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2515 | Error *local_err = NULL; |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2516 | int rc; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2517 | |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2518 | if (!has_force) { |
| 2519 | force = false; |
| 2520 | } |
| 2521 | |
Kevin Wolf | fbe2d81 | 2016-09-20 13:38:46 +0200 | [diff] [blame] | 2522 | rc = do_open_tray(has_device ? device : NULL, |
| 2523 | has_id ? id : NULL, |
| 2524 | force, &local_err); |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2525 | if (rc && rc != -ENOSYS) { |
Max Reitz | 38f54bd | 2015-10-26 21:39:12 +0100 | [diff] [blame] | 2526 | error_propagate(errp, local_err); |
Luiz Capitulino | c245b6a | 2011-12-07 16:02:36 -0200 | [diff] [blame] | 2527 | return; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2528 | } |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2529 | error_free(local_err); |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2530 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2531 | blockdev_remove_medium(has_device, device, has_id, id, errp); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2532 | } |
| 2533 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2534 | void qmp_block_passwd(bool has_device, const char *device, |
| 2535 | bool has_node_name, const char *node_name, |
| 2536 | const char *password, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2537 | { |
Daniel P. Berrange | c01c214 | 2017-06-23 17:24:16 +0100 | [diff] [blame] | 2538 | error_setg(errp, |
| 2539 | "Setting block passwords directly is no longer supported"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2540 | } |
| 2541 | |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2542 | /* |
| 2543 | * Attempt to open the tray of @device. |
| 2544 | * If @force, ignore its tray lock. |
| 2545 | * Else, if the tray is locked, don't open it, but ask the guest to open it. |
| 2546 | * On error, store an error through @errp and return -errno. |
| 2547 | * If @device does not exist, return -ENODEV. |
| 2548 | * If it has no removable media, return -ENOTSUP. |
| 2549 | * If it has no tray, return -ENOSYS. |
| 2550 | * If the guest was asked to open the tray, return -EINPROGRESS. |
| 2551 | * Else, return 0. |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2552 | */ |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2553 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
| 2554 | bool force, Error **errp) |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2555 | { |
| 2556 | BlockBackend *blk; |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2557 | const char *device = qdev_id ?: blk_name; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2558 | bool locked; |
| 2559 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2560 | blk = qmp_get_blk(blk_name, qdev_id, errp); |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2561 | if (!blk) { |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2562 | return -ENODEV; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2563 | } |
| 2564 | |
| 2565 | if (!blk_dev_has_removable_media(blk)) { |
| 2566 | error_setg(errp, "Device '%s' is not removable", device); |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2567 | return -ENOTSUP; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2568 | } |
| 2569 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2570 | if (!blk_dev_has_tray(blk)) { |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2571 | error_setg(errp, "Device '%s' does not have a tray", device); |
| 2572 | return -ENOSYS; |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2573 | } |
| 2574 | |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2575 | if (blk_dev_is_tray_open(blk)) { |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2576 | return 0; |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2577 | } |
| 2578 | |
| 2579 | locked = blk_dev_is_medium_locked(blk); |
| 2580 | if (locked) { |
| 2581 | blk_dev_eject_request(blk, force); |
| 2582 | } |
| 2583 | |
| 2584 | if (!locked || force) { |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2585 | blk_dev_change_media_cb(blk, false, &error_abort); |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2586 | } |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2587 | |
| 2588 | if (locked && !force) { |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2589 | error_setg(errp, "Device '%s' is locked and force was not specified, " |
| 2590 | "wait for tray to open and try again", device); |
| 2591 | return -EINPROGRESS; |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2592 | } |
| 2593 | |
| 2594 | return 0; |
| 2595 | } |
| 2596 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2597 | void qmp_blockdev_open_tray(bool has_device, const char *device, |
| 2598 | bool has_id, const char *id, |
| 2599 | bool has_force, bool force, |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2600 | Error **errp) |
| 2601 | { |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2602 | Error *local_err = NULL; |
| 2603 | int rc; |
| 2604 | |
John Snow | 3a3086b | 2016-05-18 17:53:40 -0400 | [diff] [blame] | 2605 | if (!has_force) { |
| 2606 | force = false; |
| 2607 | } |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2608 | rc = do_open_tray(has_device ? device : NULL, |
| 2609 | has_id ? id : NULL, |
| 2610 | force, &local_err); |
Colin Lord | bf18bee | 2016-06-06 14:15:22 -0400 | [diff] [blame] | 2611 | if (rc && rc != -ENOSYS && rc != -EINPROGRESS) { |
| 2612 | error_propagate(errp, local_err); |
| 2613 | return; |
| 2614 | } |
| 2615 | error_free(local_err); |
Max Reitz | 7d8a9f7 | 2015-10-26 21:39:08 +0100 | [diff] [blame] | 2616 | } |
| 2617 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2618 | void qmp_blockdev_close_tray(bool has_device, const char *device, |
| 2619 | bool has_id, const char *id, |
| 2620 | Error **errp) |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2621 | { |
| 2622 | BlockBackend *blk; |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2623 | Error *local_err = NULL; |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2624 | |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2625 | device = has_device ? device : NULL; |
| 2626 | id = has_id ? id : NULL; |
| 2627 | |
| 2628 | blk = qmp_get_blk(device, id, errp); |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2629 | if (!blk) { |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2630 | return; |
| 2631 | } |
| 2632 | |
| 2633 | if (!blk_dev_has_removable_media(blk)) { |
Kevin Wolf | b33945c | 2016-09-20 13:38:43 +0200 | [diff] [blame] | 2634 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2635 | return; |
| 2636 | } |
| 2637 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2638 | if (!blk_dev_has_tray(blk)) { |
| 2639 | /* Ignore this command on tray-less devices */ |
| 2640 | return; |
| 2641 | } |
| 2642 | |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2643 | if (!blk_dev_is_tray_open(blk)) { |
| 2644 | return; |
| 2645 | } |
| 2646 | |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2647 | blk_dev_change_media_cb(blk, true, &local_err); |
| 2648 | if (local_err) { |
| 2649 | error_propagate(errp, local_err); |
| 2650 | return; |
| 2651 | } |
Max Reitz | abaaf59 | 2015-10-26 21:39:09 +0100 | [diff] [blame] | 2652 | } |
| 2653 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2654 | static void blockdev_remove_medium(bool has_device, const char *device, |
| 2655 | bool has_id, const char *id, Error **errp) |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2656 | { |
| 2657 | BlockBackend *blk; |
| 2658 | BlockDriverState *bs; |
| 2659 | AioContext *aio_context; |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2660 | bool has_attached_device; |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2661 | |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2662 | device = has_device ? device : NULL; |
| 2663 | id = has_id ? id : NULL; |
| 2664 | |
| 2665 | blk = qmp_get_blk(device, id, errp); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2666 | if (!blk) { |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2667 | return; |
| 2668 | } |
| 2669 | |
| 2670 | /* For BBs without a device, we can exchange the BDS tree at will */ |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2671 | has_attached_device = blk_get_attached_dev(blk); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2672 | |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2673 | if (has_attached_device && !blk_dev_has_removable_media(blk)) { |
| 2674 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2675 | return; |
| 2676 | } |
| 2677 | |
Kevin Wolf | 00949ba | 2016-09-20 13:38:45 +0200 | [diff] [blame] | 2678 | if (has_attached_device && blk_dev_has_tray(blk) && |
| 2679 | !blk_dev_is_tray_open(blk)) |
| 2680 | { |
| 2681 | error_setg(errp, "Tray of device '%s' is not open", device ?: id); |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2682 | return; |
| 2683 | } |
| 2684 | |
| 2685 | bs = blk_bs(blk); |
| 2686 | if (!bs) { |
| 2687 | return; |
| 2688 | } |
| 2689 | |
| 2690 | aio_context = bdrv_get_aio_context(bs); |
| 2691 | aio_context_acquire(aio_context); |
| 2692 | |
| 2693 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
| 2694 | goto out; |
| 2695 | } |
| 2696 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2697 | blk_remove_bs(blk); |
| 2698 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2699 | if (!blk_dev_has_tray(blk)) { |
| 2700 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be |
| 2701 | * called at all); therefore, the medium needs to be ejected here. |
| 2702 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load |
| 2703 | * value passed here (i.e. false). */ |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2704 | blk_dev_change_media_cb(blk, false, &error_abort); |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2705 | } |
| 2706 | |
Max Reitz | 2814f67 | 2015-10-26 21:39:10 +0100 | [diff] [blame] | 2707 | out: |
| 2708 | aio_context_release(aio_context); |
| 2709 | } |
| 2710 | |
Max Reitz | 34ce111 | 2017-11-10 23:43:02 +0100 | [diff] [blame] | 2711 | void qmp_blockdev_remove_medium(const char *id, Error **errp) |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2712 | { |
| 2713 | blockdev_remove_medium(false, NULL, true, id, errp); |
| 2714 | } |
| 2715 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2716 | static void qmp_blockdev_insert_anon_medium(BlockBackend *blk, |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2717 | BlockDriverState *bs, Error **errp) |
| 2718 | { |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2719 | Error *local_err = NULL; |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2720 | bool has_device; |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 2721 | int ret; |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2722 | |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2723 | /* For BBs without a device, we can exchange the BDS tree at will */ |
| 2724 | has_device = blk_get_attached_dev(blk); |
| 2725 | |
| 2726 | if (has_device && !blk_dev_has_removable_media(blk)) { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2727 | error_setg(errp, "Device is not removable"); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2728 | return; |
| 2729 | } |
| 2730 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2731 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2732 | error_setg(errp, "Tray of the device is not open"); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2733 | return; |
| 2734 | } |
| 2735 | |
| 2736 | if (blk_bs(blk)) { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2737 | error_setg(errp, "There already is a medium in the device"); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2738 | return; |
| 2739 | } |
| 2740 | |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 2741 | ret = blk_insert_bs(blk, bs, errp); |
| 2742 | if (ret < 0) { |
| 2743 | return; |
| 2744 | } |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2745 | |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2746 | if (!blk_dev_has_tray(blk)) { |
| 2747 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be |
| 2748 | * called at all); therefore, the medium needs to be pushed into the |
| 2749 | * slot here. |
| 2750 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load |
| 2751 | * value passed here (i.e. true). */ |
Kevin Wolf | 39829a0 | 2017-01-24 14:21:41 +0100 | [diff] [blame] | 2752 | blk_dev_change_media_cb(blk, true, &local_err); |
| 2753 | if (local_err) { |
| 2754 | error_propagate(errp, local_err); |
| 2755 | blk_remove_bs(blk); |
| 2756 | return; |
| 2757 | } |
Max Reitz | 12c7ec8 | 2016-01-29 20:49:11 +0100 | [diff] [blame] | 2758 | } |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2759 | } |
| 2760 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2761 | static void blockdev_insert_medium(bool has_device, const char *device, |
| 2762 | bool has_id, const char *id, |
| 2763 | const char *node_name, Error **errp) |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2764 | { |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2765 | BlockBackend *blk; |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2766 | BlockDriverState *bs; |
| 2767 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2768 | blk = qmp_get_blk(has_device ? device : NULL, |
| 2769 | has_id ? id : NULL, |
| 2770 | errp); |
| 2771 | if (!blk) { |
| 2772 | return; |
| 2773 | } |
| 2774 | |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2775 | bs = bdrv_find_node(node_name); |
| 2776 | if (!bs) { |
| 2777 | error_setg(errp, "Node '%s' not found", node_name); |
| 2778 | return; |
| 2779 | } |
| 2780 | |
Kevin Wolf | 1f0c461 | 2016-03-22 18:38:44 +0100 | [diff] [blame] | 2781 | if (bdrv_has_blk(bs)) { |
Kevin Wolf | e467da7 | 2016-09-21 14:56:09 +0200 | [diff] [blame] | 2782 | error_setg(errp, "Node '%s' is already in use", node_name); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2783 | return; |
| 2784 | } |
| 2785 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2786 | qmp_blockdev_insert_anon_medium(blk, bs, errp); |
Max Reitz | d129988 | 2015-10-26 21:39:11 +0100 | [diff] [blame] | 2787 | } |
| 2788 | |
Max Reitz | 34ce111 | 2017-11-10 23:43:02 +0100 | [diff] [blame] | 2789 | void qmp_blockdev_insert_medium(const char *id, const char *node_name, |
| 2790 | Error **errp) |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2791 | { |
| 2792 | blockdev_insert_medium(false, NULL, true, id, node_name, errp); |
| 2793 | } |
| 2794 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2795 | void qmp_blockdev_change_medium(bool has_device, const char *device, |
| 2796 | bool has_id, const char *id, |
| 2797 | const char *filename, |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2798 | bool has_format, const char *format, |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2799 | bool has_read_only, |
| 2800 | BlockdevChangeReadOnlyMode read_only, |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2801 | Error **errp) |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2802 | { |
| 2803 | BlockBackend *blk; |
| 2804 | BlockDriverState *medium_bs = NULL; |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 2805 | int bdrv_flags; |
Kevin Wolf | b85114f | 2016-09-12 19:08:31 +0200 | [diff] [blame] | 2806 | bool detect_zeroes; |
Colin Lord | 38a53d5 | 2016-06-08 13:56:28 -0400 | [diff] [blame] | 2807 | int rc; |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2808 | QDict *options = NULL; |
| 2809 | Error *err = NULL; |
| 2810 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2811 | blk = qmp_get_blk(has_device ? device : NULL, |
| 2812 | has_id ? id : NULL, |
| 2813 | errp); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2814 | if (!blk) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2815 | goto fail; |
| 2816 | } |
| 2817 | |
| 2818 | if (blk_bs(blk)) { |
| 2819 | blk_update_root_state(blk); |
| 2820 | } |
| 2821 | |
| 2822 | bdrv_flags = blk_get_open_flags_from_root_state(blk); |
Alyssa Milburn | 156abc2 | 2016-02-06 13:36:18 +0000 | [diff] [blame] | 2823 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
Kevin Wolf | e35bdc1 | 2018-10-05 18:57:40 +0200 | [diff] [blame] | 2824 | BDRV_O_PROTOCOL | BDRV_O_AUTO_RDONLY); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2825 | |
Max Reitz | 39ff43d | 2015-11-11 04:49:44 +0100 | [diff] [blame] | 2826 | if (!has_read_only) { |
| 2827 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; |
| 2828 | } |
| 2829 | |
| 2830 | switch (read_only) { |
| 2831 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: |
| 2832 | break; |
| 2833 | |
| 2834 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: |
| 2835 | bdrv_flags &= ~BDRV_O_RDWR; |
| 2836 | break; |
| 2837 | |
| 2838 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: |
| 2839 | bdrv_flags |= BDRV_O_RDWR; |
| 2840 | break; |
| 2841 | |
| 2842 | default: |
| 2843 | abort(); |
| 2844 | } |
| 2845 | |
Kevin Wolf | b85114f | 2016-09-12 19:08:31 +0200 | [diff] [blame] | 2846 | options = qdict_new(); |
| 2847 | detect_zeroes = blk_get_detect_zeroes_from_root_state(blk); |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 2848 | qdict_put_str(options, "detect-zeroes", detect_zeroes ? "on" : "off"); |
Kevin Wolf | b85114f | 2016-09-12 19:08:31 +0200 | [diff] [blame] | 2849 | |
Max Reitz | 24fb413 | 2015-11-06 16:27:06 +0100 | [diff] [blame] | 2850 | if (has_format) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 2851 | qdict_put_str(options, "driver", format); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2852 | } |
| 2853 | |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 2854 | medium_bs = bdrv_open(filename, NULL, options, bdrv_flags, errp); |
| 2855 | if (!medium_bs) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2856 | goto fail; |
| 2857 | } |
| 2858 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2859 | rc = do_open_tray(has_device ? device : NULL, |
| 2860 | has_id ? id : NULL, |
| 2861 | false, &err); |
Colin Lord | 38a53d5 | 2016-06-08 13:56:28 -0400 | [diff] [blame] | 2862 | if (rc && rc != -ENOSYS) { |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2863 | error_propagate(errp, err); |
| 2864 | goto fail; |
| 2865 | } |
Colin Lord | 38a53d5 | 2016-06-08 13:56:28 -0400 | [diff] [blame] | 2866 | error_free(err); |
| 2867 | err = NULL; |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2868 | |
Max Reitz | 82fcf66 | 2017-11-10 23:43:01 +0100 | [diff] [blame] | 2869 | blockdev_remove_medium(has_device, device, has_id, id, &err); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2870 | if (err) { |
| 2871 | error_propagate(errp, err); |
| 2872 | goto fail; |
| 2873 | } |
| 2874 | |
Kevin Wolf | 716df21 | 2016-09-20 13:38:44 +0200 | [diff] [blame] | 2875 | qmp_blockdev_insert_anon_medium(blk, medium_bs, &err); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2876 | if (err) { |
| 2877 | error_propagate(errp, err); |
| 2878 | goto fail; |
| 2879 | } |
| 2880 | |
Kevin Wolf | 70e2cb3 | 2016-09-20 13:38:47 +0200 | [diff] [blame] | 2881 | qmp_blockdev_close_tray(has_device, device, has_id, id, errp); |
Max Reitz | de2c6c0 | 2015-10-26 21:39:13 +0100 | [diff] [blame] | 2882 | |
| 2883 | fail: |
| 2884 | /* If the medium has been inserted, the device has its own reference, so |
| 2885 | * ours must be relinquished; and if it has not been inserted successfully, |
| 2886 | * the reference must be relinquished anyway */ |
| 2887 | bdrv_unref(medium_bs); |
| 2888 | } |
| 2889 | |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2890 | /* throttling disk I/O limits */ |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2891 | void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp) |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2892 | { |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2893 | ThrottleConfig cfg; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2894 | BlockDriverState *bs; |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2895 | BlockBackend *blk; |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2896 | AioContext *aio_context; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2897 | |
Kevin Wolf | 7a9877a | 2016-09-20 13:38:48 +0200 | [diff] [blame] | 2898 | blk = qmp_get_blk(arg->has_device ? arg->device : NULL, |
| 2899 | arg->has_id ? arg->id : NULL, |
| 2900 | errp); |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2901 | if (!blk) { |
Luiz Capitulino | 80047da | 2011-12-14 16:49:14 -0200 | [diff] [blame] | 2902 | return; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2903 | } |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2904 | |
| 2905 | aio_context = blk_get_aio_context(blk); |
| 2906 | aio_context_acquire(aio_context); |
| 2907 | |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 2908 | bs = blk_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2909 | if (!bs) { |
Kevin Wolf | 7a9877a | 2016-09-20 13:38:48 +0200 | [diff] [blame] | 2910 | error_setg(errp, "Device has no medium"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2911 | goto out; |
| 2912 | } |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2913 | |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 2914 | throttle_config_init(&cfg); |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2915 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = arg->bps; |
| 2916 | cfg.buckets[THROTTLE_BPS_READ].avg = arg->bps_rd; |
| 2917 | cfg.buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2918 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2919 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = arg->iops; |
| 2920 | cfg.buckets[THROTTLE_OPS_READ].avg = arg->iops_rd; |
| 2921 | cfg.buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2922 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2923 | if (arg->has_bps_max) { |
| 2924 | cfg.buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2925 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2926 | if (arg->has_bps_rd_max) { |
| 2927 | cfg.buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2928 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2929 | if (arg->has_bps_wr_max) { |
| 2930 | cfg.buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2931 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2932 | if (arg->has_iops_max) { |
| 2933 | cfg.buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2934 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2935 | if (arg->has_iops_rd_max) { |
| 2936 | cfg.buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2937 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2938 | if (arg->has_iops_wr_max) { |
| 2939 | cfg.buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max; |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 2940 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2941 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2942 | if (arg->has_bps_max_length) { |
| 2943 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = arg->bps_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2944 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2945 | if (arg->has_bps_rd_max_length) { |
| 2946 | cfg.buckets[THROTTLE_BPS_READ].burst_length = arg->bps_rd_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2947 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2948 | if (arg->has_bps_wr_max_length) { |
| 2949 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = arg->bps_wr_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2950 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2951 | if (arg->has_iops_max_length) { |
| 2952 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = arg->iops_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2953 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2954 | if (arg->has_iops_rd_max_length) { |
| 2955 | cfg.buckets[THROTTLE_OPS_READ].burst_length = arg->iops_rd_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2956 | } |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2957 | if (arg->has_iops_wr_max_length) { |
| 2958 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = arg->iops_wr_max_length; |
Alberto Garcia | dce1320 | 2016-02-18 12:27:03 +0200 | [diff] [blame] | 2959 | } |
| 2960 | |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2961 | if (arg->has_iops_size) { |
| 2962 | cfg.op_size = arg->iops_size; |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 2963 | } |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 2964 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 2965 | if (!throttle_is_valid(&cfg, errp)) { |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2966 | goto out; |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2967 | } |
| 2968 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2969 | if (throttle_enabled(&cfg)) { |
| 2970 | /* Enable I/O limits if they're not enabled yet, otherwise |
| 2971 | * just update the throttling group. */ |
Manos Pitsidianakis | 022cdc9 | 2017-08-25 16:20:23 +0300 | [diff] [blame] | 2972 | if (!blk_get_public(blk)->throttle_group_member.throttle_state) { |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2973 | blk_io_limits_enable(blk, |
Kevin Wolf | 7a9877a | 2016-09-20 13:38:48 +0200 | [diff] [blame] | 2974 | arg->has_group ? arg->group : |
| 2975 | arg->has_device ? arg->device : |
| 2976 | arg->id); |
Eric Blake | 4dc9397 | 2016-07-13 21:50:21 -0600 | [diff] [blame] | 2977 | } else if (arg->has_group) { |
| 2978 | blk_io_limits_update_group(blk, arg->group); |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2979 | } |
| 2980 | /* Set the new throttling configuration */ |
Kevin Wolf | 9714807 | 2016-03-21 13:53:52 +0100 | [diff] [blame] | 2981 | blk_set_io_limits(blk, &cfg); |
Manos Pitsidianakis | 022cdc9 | 2017-08-25 16:20:23 +0300 | [diff] [blame] | 2982 | } else if (blk_get_public(blk)->throttle_group_member.throttle_state) { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 2983 | /* If all throttling settings are set to 0, disable I/O limits */ |
Kevin Wolf | 9714807 | 2016-03-21 13:53:52 +0100 | [diff] [blame] | 2984 | blk_io_limits_disable(blk); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2985 | } |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2986 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 2987 | out: |
Stefan Hajnoczi | b15446f | 2014-05-14 16:22:47 +0200 | [diff] [blame] | 2988 | aio_context_release(aio_context); |
Zhi Yong Wu | 727f005 | 2011-11-08 13:00:31 +0800 | [diff] [blame] | 2989 | } |
| 2990 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2991 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
| 2992 | bool has_granularity, uint32_t granularity, |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2993 | bool has_persistent, bool persistent, |
Vladimir Sementsov-Ogievskiy | a6e2ca5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2994 | bool has_disabled, bool disabled, |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2995 | Error **errp) |
| 2996 | { |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 2997 | BlockDriverState *bs; |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2998 | BdrvDirtyBitmap *bitmap; |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 2999 | AioContext *aio_context; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3000 | |
| 3001 | if (!name || name[0] == '\0') { |
| 3002 | error_setg(errp, "Bitmap name cannot be empty"); |
| 3003 | return; |
| 3004 | } |
| 3005 | |
| 3006 | bs = bdrv_lookup_bs(node, node, errp); |
| 3007 | if (!bs) { |
| 3008 | return; |
| 3009 | } |
| 3010 | |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3011 | aio_context = bdrv_get_aio_context(bs); |
| 3012 | aio_context_acquire(aio_context); |
| 3013 | |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3014 | if (has_granularity) { |
| 3015 | if (granularity < 512 || !is_power_of_2(granularity)) { |
| 3016 | error_setg(errp, "Granularity must be power of 2 " |
| 3017 | "and at least 512"); |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3018 | goto out; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3019 | } |
| 3020 | } else { |
| 3021 | /* Default to cluster size, if available: */ |
| 3022 | granularity = bdrv_get_default_bitmap_granularity(bs); |
| 3023 | } |
| 3024 | |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 3025 | if (!has_persistent) { |
| 3026 | persistent = false; |
| 3027 | } |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 3028 | |
Vladimir Sementsov-Ogievskiy | a6e2ca5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3029 | if (!has_disabled) { |
| 3030 | disabled = false; |
| 3031 | } |
| 3032 | |
Vladimir Sementsov-Ogievskiy | d2c3080 | 2019-09-20 11:25:43 +0300 | [diff] [blame] | 3033 | if (persistent && |
| 3034 | !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp)) |
| 3035 | { |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3036 | goto out; |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 3037 | } |
| 3038 | |
| 3039 | bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp); |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 3040 | if (bitmap == NULL) { |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3041 | goto out; |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 3042 | } |
Vladimir Sementsov-Ogievskiy | eb738bb | 2017-06-28 15:05:24 +0300 | [diff] [blame] | 3043 | |
Vladimir Sementsov-Ogievskiy | a6e2ca5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3044 | if (disabled) { |
| 3045 | bdrv_disable_dirty_bitmap(bitmap); |
| 3046 | } |
| 3047 | |
Eric Blake | 796a379 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 3048 | bdrv_dirty_bitmap_set_persistence(bitmap, persistent); |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3049 | |
| 3050 | out: |
| 3051 | aio_context_release(aio_context); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3052 | } |
| 3053 | |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 3054 | static BdrvDirtyBitmap *do_block_dirty_bitmap_remove( |
| 3055 | const char *node, const char *name, bool release, |
| 3056 | BlockDriverState **bitmap_bs, Error **errp) |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3057 | { |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3058 | BlockDriverState *bs; |
| 3059 | BdrvDirtyBitmap *bitmap; |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3060 | AioContext *aio_context; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3061 | |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 3062 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3063 | if (!bitmap || !bs) { |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 3064 | return NULL; |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3065 | } |
| 3066 | |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3067 | aio_context = bdrv_get_aio_context(bs); |
| 3068 | aio_context_acquire(aio_context); |
| 3069 | |
John Snow | c3edf13 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 3070 | if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_BUSY | BDRV_BITMAP_RO, |
| 3071 | errp)) { |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3072 | aio_context_release(aio_context); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 3073 | return NULL; |
John Snow | 9bd2b08 | 2015-04-17 19:49:57 -0400 | [diff] [blame] | 3074 | } |
Vladimir Sementsov-Ogievskiy | 5c36c1a | 2017-06-28 15:05:29 +0300 | [diff] [blame] | 3075 | |
Vladimir Sementsov-Ogievskiy | d2c3080 | 2019-09-20 11:25:43 +0300 | [diff] [blame] | 3076 | if (bdrv_dirty_bitmap_get_persistence(bitmap) && |
| 3077 | bdrv_remove_persistent_dirty_bitmap(bs, name, errp) < 0) |
| 3078 | { |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3079 | aio_context_release(aio_context); |
| 3080 | return NULL; |
Vladimir Sementsov-Ogievskiy | 5c36c1a | 2017-06-28 15:05:29 +0300 | [diff] [blame] | 3081 | } |
| 3082 | |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 3083 | if (release) { |
Vladimir Sementsov-Ogievskiy | 5deb6cb | 2019-09-16 17:19:09 +0300 | [diff] [blame] | 3084 | bdrv_release_dirty_bitmap(bitmap); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 3085 | } |
| 3086 | |
| 3087 | if (bitmap_bs) { |
| 3088 | *bitmap_bs = bs; |
| 3089 | } |
| 3090 | |
Sergio Lopez | 91005a4 | 2020-01-08 15:31:36 +0100 | [diff] [blame] | 3091 | aio_context_release(aio_context); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 3092 | return release ? NULL : bitmap; |
| 3093 | } |
| 3094 | |
| 3095 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, |
| 3096 | Error **errp) |
| 3097 | { |
| 3098 | do_block_dirty_bitmap_remove(node, name, true, NULL, errp); |
John Snow | 341ebc2 | 2015-04-17 19:49:52 -0400 | [diff] [blame] | 3099 | } |
| 3100 | |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 3101 | /** |
| 3102 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap |
| 3103 | * immediately after a full backup operation. |
| 3104 | */ |
| 3105 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, |
| 3106 | Error **errp) |
| 3107 | { |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 3108 | BdrvDirtyBitmap *bitmap; |
| 3109 | BlockDriverState *bs; |
| 3110 | |
Paolo Bonzini | 2119882 | 2017-06-05 14:39:03 +0200 | [diff] [blame] | 3111 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 3112 | if (!bitmap || !bs) { |
| 3113 | return; |
| 3114 | } |
| 3115 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 3116 | if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_DEFAULT, errp)) { |
Vladimir Sementsov-Ogievskiy | d6883bc | 2017-06-28 15:05:10 +0300 | [diff] [blame] | 3117 | return; |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 3118 | } |
| 3119 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 3120 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
John Snow | e74e6b7 | 2015-04-17 19:49:59 -0400 | [diff] [blame] | 3121 | } |
| 3122 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 3123 | void qmp_block_dirty_bitmap_enable(const char *node, const char *name, |
Vladimir Sementsov-Ogievskiy | 5c5d2e5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3124 | Error **errp) |
| 3125 | { |
| 3126 | BlockDriverState *bs; |
| 3127 | BdrvDirtyBitmap *bitmap; |
| 3128 | |
| 3129 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 3130 | if (!bitmap) { |
| 3131 | return; |
| 3132 | } |
| 3133 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 3134 | if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
Vladimir Sementsov-Ogievskiy | 5c5d2e5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3135 | return; |
| 3136 | } |
| 3137 | |
| 3138 | bdrv_enable_dirty_bitmap(bitmap); |
| 3139 | } |
| 3140 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 3141 | void qmp_block_dirty_bitmap_disable(const char *node, const char *name, |
Vladimir Sementsov-Ogievskiy | 5c5d2e5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3142 | Error **errp) |
| 3143 | { |
| 3144 | BlockDriverState *bs; |
| 3145 | BdrvDirtyBitmap *bitmap; |
| 3146 | |
| 3147 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 3148 | if (!bitmap) { |
| 3149 | return; |
| 3150 | } |
| 3151 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 3152 | if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
Vladimir Sementsov-Ogievskiy | 5c5d2e5 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3153 | return; |
| 3154 | } |
| 3155 | |
| 3156 | bdrv_disable_dirty_bitmap(bitmap); |
| 3157 | } |
| 3158 | |
Vladimir Sementsov-Ogievskiy | eff0829 | 2019-05-28 19:33:31 -0400 | [diff] [blame] | 3159 | static BdrvDirtyBitmap *do_block_dirty_bitmap_merge( |
| 3160 | const char *node, const char *target, |
| 3161 | BlockDirtyBitmapMergeSourceList *bitmaps, |
| 3162 | HBitmap **backup, Error **errp) |
Vladimir Sementsov-Ogievskiy | b598e53 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3163 | { |
| 3164 | BlockDriverState *bs; |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 3165 | BdrvDirtyBitmap *dst, *src, *anon; |
Vladimir Sementsov-Ogievskiy | eff0829 | 2019-05-28 19:33:31 -0400 | [diff] [blame] | 3166 | BlockDirtyBitmapMergeSourceList *lst; |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 3167 | Error *local_err = NULL; |
Vladimir Sementsov-Ogievskiy | b598e53 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3168 | |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 3169 | dst = block_dirty_bitmap_lookup(node, target, &bs, errp); |
Vladimir Sementsov-Ogievskiy | b598e53 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3170 | if (!dst) { |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 3171 | return NULL; |
Vladimir Sementsov-Ogievskiy | b598e53 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3172 | } |
| 3173 | |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 3174 | anon = bdrv_create_dirty_bitmap(bs, bdrv_dirty_bitmap_granularity(dst), |
| 3175 | NULL, errp); |
| 3176 | if (!anon) { |
| 3177 | return NULL; |
Vladimir Sementsov-Ogievskiy | b598e53 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3178 | } |
| 3179 | |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 3180 | for (lst = bitmaps; lst; lst = lst->next) { |
Vladimir Sementsov-Ogievskiy | eff0829 | 2019-05-28 19:33:31 -0400 | [diff] [blame] | 3181 | switch (lst->value->type) { |
| 3182 | const char *name, *node; |
| 3183 | case QTYPE_QSTRING: |
| 3184 | name = lst->value->u.local; |
| 3185 | src = bdrv_find_dirty_bitmap(bs, name); |
| 3186 | if (!src) { |
| 3187 | error_setg(errp, "Dirty bitmap '%s' not found", name); |
| 3188 | dst = NULL; |
| 3189 | goto out; |
| 3190 | } |
| 3191 | break; |
| 3192 | case QTYPE_QDICT: |
| 3193 | node = lst->value->u.external.node; |
| 3194 | name = lst->value->u.external.name; |
| 3195 | src = block_dirty_bitmap_lookup(node, name, NULL, errp); |
| 3196 | if (!src) { |
| 3197 | dst = NULL; |
| 3198 | goto out; |
| 3199 | } |
| 3200 | break; |
| 3201 | default: |
| 3202 | abort(); |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 3203 | } |
| 3204 | |
| 3205 | bdrv_merge_dirty_bitmap(anon, src, NULL, &local_err); |
| 3206 | if (local_err) { |
| 3207 | error_propagate(errp, local_err); |
| 3208 | dst = NULL; |
| 3209 | goto out; |
| 3210 | } |
| 3211 | } |
| 3212 | |
| 3213 | /* Merge into dst; dst is unchanged on failure. */ |
| 3214 | bdrv_merge_dirty_bitmap(dst, anon, backup, errp); |
| 3215 | |
| 3216 | out: |
Vladimir Sementsov-Ogievskiy | 5deb6cb | 2019-09-16 17:19:09 +0300 | [diff] [blame] | 3217 | bdrv_release_dirty_bitmap(anon); |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 3218 | return dst; |
| 3219 | } |
| 3220 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 3221 | void qmp_block_dirty_bitmap_merge(const char *node, const char *target, |
Vladimir Sementsov-Ogievskiy | eff0829 | 2019-05-28 19:33:31 -0400 | [diff] [blame] | 3222 | BlockDirtyBitmapMergeSourceList *bitmaps, |
| 3223 | Error **errp) |
John Snow | 360d4e4 | 2018-12-21 04:35:21 -0500 | [diff] [blame] | 3224 | { |
| 3225 | do_block_dirty_bitmap_merge(node, target, bitmaps, NULL, errp); |
Vladimir Sementsov-Ogievskiy | b598e53 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 3226 | } |
| 3227 | |
Vladimir Sementsov-Ogievskiy | a3b5253 | 2017-06-28 15:05:25 +0300 | [diff] [blame] | 3228 | BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node, |
| 3229 | const char *name, |
| 3230 | Error **errp) |
| 3231 | { |
| 3232 | BdrvDirtyBitmap *bitmap; |
| 3233 | BlockDriverState *bs; |
| 3234 | BlockDirtyBitmapSha256 *ret = NULL; |
| 3235 | char *sha256; |
| 3236 | |
| 3237 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 3238 | if (!bitmap || !bs) { |
| 3239 | return NULL; |
| 3240 | } |
| 3241 | |
| 3242 | sha256 = bdrv_dirty_bitmap_sha256(bitmap, errp); |
| 3243 | if (sha256 == NULL) { |
| 3244 | return NULL; |
| 3245 | } |
| 3246 | |
| 3247 | ret = g_new(BlockDirtyBitmapSha256, 1); |
| 3248 | ret->sha256 = sha256; |
| 3249 | |
| 3250 | return ret; |
| 3251 | } |
| 3252 | |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 3253 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3254 | { |
| 3255 | const char *id = qdict_get_str(qdict, "id"); |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 3256 | BlockBackend *blk; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3257 | BlockDriverState *bs; |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 3258 | AioContext *aio_context; |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 3259 | Error *local_err = NULL; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3260 | |
Kevin Wolf | 2073d41 | 2016-02-23 17:50:37 +0100 | [diff] [blame] | 3261 | bs = bdrv_find_node(id); |
| 3262 | if (bs) { |
Markus Armbruster | 79b7a77 | 2017-03-21 17:53:28 +0100 | [diff] [blame] | 3263 | qmp_blockdev_del(id, &local_err); |
Kevin Wolf | 2073d41 | 2016-02-23 17:50:37 +0100 | [diff] [blame] | 3264 | if (local_err) { |
| 3265 | error_report_err(local_err); |
| 3266 | } |
| 3267 | return; |
| 3268 | } |
| 3269 | |
Markus Armbruster | 7e7d56d | 2014-10-07 13:59:05 +0200 | [diff] [blame] | 3270 | blk = blk_by_name(id); |
| 3271 | if (!blk) { |
Markus Armbruster | b1422f2 | 2014-05-16 11:00:09 +0200 | [diff] [blame] | 3272 | error_report("Device '%s' not found", id); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 3273 | return; |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3274 | } |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 3275 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 3276 | if (!blk_legacy_dinfo(blk)) { |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 3277 | error_report("Deleting device added with blockdev-add" |
| 3278 | " is not supported"); |
Markus Armbruster | 072ebe6 | 2015-03-05 17:00:56 +0100 | [diff] [blame] | 3279 | return; |
Markus Armbruster | 48f364d | 2014-09-11 16:45:39 +0200 | [diff] [blame] | 3280 | } |
| 3281 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3282 | aio_context = blk_get_aio_context(blk); |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 3283 | aio_context_acquire(aio_context); |
| 3284 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3285 | bs = blk_bs(blk); |
| 3286 | if (bs) { |
| 3287 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
| 3288 | error_report_err(local_err); |
| 3289 | aio_context_release(aio_context); |
| 3290 | return; |
| 3291 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3292 | |
Max Reitz | 938abd4 | 2016-01-29 16:36:09 +0100 | [diff] [blame] | 3293 | blk_remove_bs(blk); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3294 | } |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3295 | |
Max Reitz | 7c73587 | 2016-03-16 19:54:39 +0100 | [diff] [blame] | 3296 | /* Make the BlockBackend and the attached BlockDriverState anonymous */ |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 3297 | monitor_remove_blk(blk); |
| 3298 | |
Max Reitz | 7c73587 | 2016-03-16 19:54:39 +0100 | [diff] [blame] | 3299 | /* If this BlockBackend has a device attached to it, its refcount will be |
| 3300 | * decremented when the device is removed; otherwise we have to do so here. |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 3301 | */ |
Markus Armbruster | a7f53e2 | 2014-10-07 13:59:25 +0200 | [diff] [blame] | 3302 | if (blk_get_attached_dev(blk)) { |
Stefan Hajnoczi | 293c51a | 2013-06-05 10:33:14 +0200 | [diff] [blame] | 3303 | /* Further I/O must not pause the guest */ |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 3304 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
| 3305 | BLOCKDEV_ON_ERROR_REPORT); |
Ryan Harper | d22b2f4 | 2011-03-29 20:51:47 -0500 | [diff] [blame] | 3306 | } else { |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 3307 | blk_unref(blk); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3308 | } |
| 3309 | |
Stefan Hajnoczi | 8ad4202 | 2014-08-18 16:07:12 +0100 | [diff] [blame] | 3310 | aio_context_release(aio_context); |
Ryan Harper | 9063f81 | 2010-11-12 11:07:13 -0600 | [diff] [blame] | 3311 | } |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3312 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3313 | void qmp_block_resize(bool has_device, const char *device, |
| 3314 | bool has_node_name, const char *node_name, |
| 3315 | int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3316 | { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3317 | Error *local_err = NULL; |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 3318 | BlockBackend *blk = NULL; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3319 | BlockDriverState *bs; |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3320 | AioContext *aio_context; |
Kevin Wolf | 8732901 | 2013-05-02 15:32:55 +0200 | [diff] [blame] | 3321 | int ret; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3322 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3323 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 3324 | has_node_name ? node_name : NULL, |
| 3325 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3326 | if (local_err) { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 3327 | error_propagate(errp, local_err); |
| 3328 | return; |
| 3329 | } |
| 3330 | |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3331 | aio_context = bdrv_get_aio_context(bs); |
| 3332 | aio_context_acquire(aio_context); |
| 3333 | |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3334 | if (size < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3335 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3336 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3337 | } |
| 3338 | |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 3339 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3340 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3341 | goto out; |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 3342 | } |
| 3343 | |
Kevin Wolf | d861ab3 | 2019-04-25 14:25:10 +0200 | [diff] [blame] | 3344 | blk = blk_new(bdrv_get_aio_context(bs), BLK_PERM_RESIZE, BLK_PERM_ALL); |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 3345 | ret = blk_insert_bs(blk, bs, errp); |
| 3346 | if (ret < 0) { |
| 3347 | goto out; |
| 3348 | } |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 3349 | |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 3350 | bdrv_drained_begin(bs); |
Max Reitz | c80d8b0 | 2019-09-18 11:51:40 +0200 | [diff] [blame] | 3351 | ret = blk_truncate(blk, size, false, PREALLOC_MODE_OFF, errp); |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 3352 | bdrv_drained_end(bs); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3353 | |
| 3354 | out: |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 3355 | blk_unref(blk); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 3356 | aio_context_release(aio_context); |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 3357 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3358 | |
Alberto Garcia | 2323322 | 2016-07-05 17:28:59 +0300 | [diff] [blame] | 3359 | void qmp_block_stream(bool has_job_id, const char *job_id, const char *device, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3360 | bool has_base, const char *base, |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3361 | bool has_base_node, const char *base_node, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3362 | bool has_backing_file, const char *backing_file, |
| 3363 | bool has_speed, int64_t speed, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3364 | bool has_on_error, BlockdevOnError on_error, |
John Snow | 241ca1a | 2018-09-06 09:02:23 -0400 | [diff] [blame] | 3365 | bool has_auto_finalize, bool auto_finalize, |
| 3366 | bool has_auto_dismiss, bool auto_dismiss, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3367 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3368 | { |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 3369 | BlockDriverState *bs, *iter; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3370 | BlockDriverState *base_bs = NULL; |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3371 | AioContext *aio_context; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 3372 | Error *local_err = NULL; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3373 | const char *base_name = NULL; |
John Snow | cf6320d | 2018-09-06 09:02:12 -0400 | [diff] [blame] | 3374 | int job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3375 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 3376 | if (!has_on_error) { |
| 3377 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3378 | } |
| 3379 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 3380 | bs = bdrv_lookup_bs(device, device, errp); |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3381 | if (!bs) { |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3382 | return; |
| 3383 | } |
| 3384 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3385 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3386 | aio_context_acquire(aio_context); |
| 3387 | |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3388 | if (has_base && has_base_node) { |
| 3389 | error_setg(errp, "'base' and 'base-node' cannot be specified " |
| 3390 | "at the same time"); |
| 3391 | goto out; |
| 3392 | } |
| 3393 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3394 | if (has_base) { |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3395 | base_bs = bdrv_find_backing_image(bs, base); |
| 3396 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3397 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3398 | goto out; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 3399 | } |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3400 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3401 | base_name = base; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3402 | } |
| 3403 | |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3404 | if (has_base_node) { |
| 3405 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 3406 | if (!base_bs) { |
| 3407 | goto out; |
| 3408 | } |
| 3409 | if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) { |
| 3410 | error_setg(errp, "Node '%s' is not a backing image of '%s'", |
| 3411 | base_node, device); |
| 3412 | goto out; |
| 3413 | } |
| 3414 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 3415 | bdrv_refresh_filename(base_bs); |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 3416 | base_name = base_bs->filename; |
| 3417 | } |
| 3418 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 3419 | /* Check for op blockers in the whole chain between bs and base */ |
| 3420 | for (iter = bs; iter && iter != base_bs; iter = backing_bs(iter)) { |
| 3421 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) { |
| 3422 | goto out; |
| 3423 | } |
| 3424 | } |
| 3425 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3426 | /* if we are streaming the entire chain, the result will have no backing |
| 3427 | * file, and specifying one is therefore an error */ |
| 3428 | if (base_bs == NULL && has_backing_file) { |
| 3429 | error_setg(errp, "backing file specified, but streaming the " |
| 3430 | "entire chain"); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3431 | goto out; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 3432 | } |
| 3433 | |
| 3434 | /* backing_file string overrides base bs filename */ |
| 3435 | base_name = has_backing_file ? backing_file : base_name; |
| 3436 | |
John Snow | 241ca1a | 2018-09-06 09:02:23 -0400 | [diff] [blame] | 3437 | if (has_auto_finalize && !auto_finalize) { |
| 3438 | job_flags |= JOB_MANUAL_FINALIZE; |
| 3439 | } |
| 3440 | if (has_auto_dismiss && !auto_dismiss) { |
| 3441 | job_flags |= JOB_MANUAL_DISMISS; |
| 3442 | } |
| 3443 | |
Alberto Garcia | 2323322 | 2016-07-05 17:28:59 +0300 | [diff] [blame] | 3444 | stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name, |
John Snow | cf6320d | 2018-09-06 09:02:12 -0400 | [diff] [blame] | 3445 | job_flags, has_speed ? speed : 0, on_error, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3446 | if (local_err) { |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 3447 | error_propagate(errp, local_err); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3448 | goto out; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3449 | } |
| 3450 | |
Vladimir Sementsov-Ogievskiy | b23c580 | 2019-06-06 18:41:32 +0300 | [diff] [blame] | 3451 | trace_qmp_block_stream(bs); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 3452 | |
| 3453 | out: |
| 3454 | aio_context_release(aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 3455 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3456 | |
Alberto Garcia | fd62c60 | 2016-07-05 17:29:00 +0300 | [diff] [blame] | 3457 | void qmp_block_commit(bool has_job_id, const char *job_id, const char *device, |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 3458 | bool has_base_node, const char *base_node, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3459 | bool has_base, const char *base, |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 3460 | bool has_top_node, const char *top_node, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3461 | bool has_top, const char *top, |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3462 | bool has_backing_file, const char *backing_file, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3463 | bool has_speed, int64_t speed, |
Kevin Wolf | 8faad1c | 2020-02-14 21:08:11 +0100 | [diff] [blame] | 3464 | bool has_on_error, BlockdevOnError on_error, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3465 | bool has_filter_node_name, const char *filter_node_name, |
John Snow | 96fbf53 | 2018-09-06 09:02:21 -0400 | [diff] [blame] | 3466 | bool has_auto_finalize, bool auto_finalize, |
| 3467 | bool has_auto_dismiss, bool auto_dismiss, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3468 | Error **errp) |
| 3469 | { |
| 3470 | BlockDriverState *bs; |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 3471 | BlockDriverState *iter; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3472 | BlockDriverState *base_bs, *top_bs; |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3473 | AioContext *aio_context; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3474 | Error *local_err = NULL; |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 3475 | int job_flags = JOB_DEFAULT; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3476 | |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 3477 | if (!has_speed) { |
| 3478 | speed = 0; |
| 3479 | } |
Kevin Wolf | 8faad1c | 2020-02-14 21:08:11 +0100 | [diff] [blame] | 3480 | if (!has_on_error) { |
| 3481 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3482 | } |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3483 | if (!has_filter_node_name) { |
| 3484 | filter_node_name = NULL; |
| 3485 | } |
John Snow | 96fbf53 | 2018-09-06 09:02:21 -0400 | [diff] [blame] | 3486 | if (has_auto_finalize && !auto_finalize) { |
| 3487 | job_flags |= JOB_MANUAL_FINALIZE; |
| 3488 | } |
| 3489 | if (has_auto_dismiss && !auto_dismiss) { |
| 3490 | job_flags |= JOB_MANUAL_DISMISS; |
| 3491 | } |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 3492 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3493 | /* Important Note: |
| 3494 | * libvirt relies on the DeviceNotFound error class in order to probe for |
| 3495 | * live commit feature versions; for this to work, we must make sure to |
| 3496 | * perform the device lookup before any generic errors that may occur in a |
| 3497 | * scenario in which all optional arguments are omitted. */ |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3498 | bs = qmp_get_root_bs(device, &local_err); |
| 3499 | if (!bs) { |
| 3500 | bs = bdrv_lookup_bs(device, device, NULL); |
| 3501 | if (!bs) { |
| 3502 | error_free(local_err); |
| 3503 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 3504 | "Device '%s' not found", device); |
| 3505 | } else { |
| 3506 | error_propagate(errp, local_err); |
| 3507 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3508 | return; |
| 3509 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3510 | |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3511 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3512 | aio_context_acquire(aio_context); |
| 3513 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3514 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3515 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 3516 | } |
| 3517 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3518 | /* default top_bs is the active layer */ |
| 3519 | top_bs = bs; |
| 3520 | |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 3521 | if (has_top_node && has_top) { |
| 3522 | error_setg(errp, "'top-node' and 'top' are mutually exclusive"); |
| 3523 | goto out; |
| 3524 | } else if (has_top_node) { |
| 3525 | top_bs = bdrv_lookup_bs(NULL, top_node, errp); |
| 3526 | if (top_bs == NULL) { |
| 3527 | goto out; |
| 3528 | } |
| 3529 | if (!bdrv_chain_contains(bs, top_bs)) { |
| 3530 | error_setg(errp, "'%s' is not in this backing file chain", |
| 3531 | top_node); |
| 3532 | goto out; |
| 3533 | } |
| 3534 | } else if (has_top && top) { |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 3535 | /* This strcmp() is just a shortcut, there is no need to |
| 3536 | * refresh @bs's filename. If it mismatches, |
| 3537 | * bdrv_find_backing_image() will do the refresh and may still |
| 3538 | * return @bs. */ |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3539 | if (strcmp(bs->filename, top) != 0) { |
| 3540 | top_bs = bdrv_find_backing_image(bs, top); |
| 3541 | } |
| 3542 | } |
| 3543 | |
| 3544 | if (top_bs == NULL) { |
| 3545 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3546 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3547 | } |
| 3548 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3549 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
| 3550 | |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 3551 | if (has_base_node && has_base) { |
| 3552 | error_setg(errp, "'base-node' and 'base' are mutually exclusive"); |
| 3553 | goto out; |
| 3554 | } else if (has_base_node) { |
| 3555 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 3556 | if (base_bs == NULL) { |
| 3557 | goto out; |
| 3558 | } |
| 3559 | if (!bdrv_chain_contains(top_bs, base_bs)) { |
| 3560 | error_setg(errp, "'%s' is not in this backing file chain", |
| 3561 | base_node); |
| 3562 | goto out; |
| 3563 | } |
| 3564 | } else if (has_base && base) { |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3565 | base_bs = bdrv_find_backing_image(top_bs, base); |
| 3566 | } else { |
| 3567 | base_bs = bdrv_find_base(top_bs); |
| 3568 | } |
| 3569 | |
| 3570 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3571 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3572 | goto out; |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 3573 | } |
| 3574 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3575 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 3576 | |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 3577 | for (iter = top_bs; iter != backing_bs(base_bs); iter = backing_bs(iter)) { |
| 3578 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 3579 | goto out; |
| 3580 | } |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 3581 | } |
| 3582 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3583 | /* Do not allow attempts to commit an image into itself */ |
| 3584 | if (top_bs == base_bs) { |
| 3585 | error_setg(errp, "cannot commit an image into itself"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3586 | goto out; |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 3587 | } |
| 3588 | |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3589 | if (top_bs == bs) { |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3590 | if (has_backing_file) { |
| 3591 | error_setg(errp, "'backing-file' specified," |
| 3592 | " but 'top' is the active layer"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3593 | goto out; |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 3594 | } |
John Snow | 47970df | 2016-10-27 12:06:57 -0400 | [diff] [blame] | 3595 | commit_active_start(has_job_id ? job_id : NULL, bs, base_bs, |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 3596 | job_flags, speed, on_error, |
Fam Zheng | 78bbd91 | 2017-04-21 20:27:04 +0800 | [diff] [blame] | 3597 | filter_node_name, NULL, NULL, false, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3598 | } else { |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 3599 | BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs); |
| 3600 | if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 3601 | goto out; |
| 3602 | } |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 3603 | commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, job_flags, |
| 3604 | speed, on_error, has_backing_file ? backing_file : NULL, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3605 | filter_node_name, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 3606 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3607 | if (local_err != NULL) { |
| 3608 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3609 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3610 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 3611 | |
| 3612 | out: |
| 3613 | aio_context_release(aio_context); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 3614 | } |
| 3615 | |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3616 | /* Common QMP interface for drive-backup and blockdev-backup */ |
| 3617 | static BlockJob *do_backup_common(BackupCommon *backup, |
| 3618 | BlockDriverState *bs, |
| 3619 | BlockDriverState *target_bs, |
| 3620 | AioContext *aio_context, |
| 3621 | JobTxn *txn, Error **errp) |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3622 | { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 3623 | BlockJob *job = NULL; |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 3624 | BdrvDirtyBitmap *bmap = NULL; |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3625 | int job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3626 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3627 | if (!backup->has_speed) { |
| 3628 | backup->speed = 0; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3629 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3630 | if (!backup->has_on_source_error) { |
| 3631 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3632 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3633 | if (!backup->has_on_target_error) { |
| 3634 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3635 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 3636 | if (!backup->has_job_id) { |
| 3637 | backup->job_id = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3638 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 3639 | if (!backup->has_auto_finalize) { |
| 3640 | backup->auto_finalize = true; |
| 3641 | } |
| 3642 | if (!backup->has_auto_dismiss) { |
| 3643 | backup->auto_dismiss = true; |
| 3644 | } |
Pavel Butsykin | 13b9414 | 2016-07-22 11:17:52 +0300 | [diff] [blame] | 3645 | if (!backup->has_compress) { |
| 3646 | backup->compress = false; |
| 3647 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 3648 | |
John Snow | a6c9365 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 3649 | if ((backup->sync == MIRROR_SYNC_MODE_BITMAP) || |
| 3650 | (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL)) { |
| 3651 | /* done before desugaring 'incremental' to print the right message */ |
| 3652 | if (!backup->has_bitmap) { |
| 3653 | error_setg(errp, "must provide a valid bitmap name for " |
| 3654 | "'%s' sync mode", MirrorSyncMode_str(backup->sync)); |
| 3655 | return NULL; |
| 3656 | } |
| 3657 | } |
| 3658 | |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3659 | if (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL) { |
| 3660 | if (backup->has_bitmap_mode && |
| 3661 | backup->bitmap_mode != BITMAP_SYNC_MODE_ON_SUCCESS) { |
| 3662 | error_setg(errp, "Bitmap sync mode must be '%s' " |
| 3663 | "when using sync mode '%s'", |
| 3664 | BitmapSyncMode_str(BITMAP_SYNC_MODE_ON_SUCCESS), |
| 3665 | MirrorSyncMode_str(backup->sync)); |
| 3666 | return NULL; |
| 3667 | } |
| 3668 | backup->has_bitmap_mode = true; |
| 3669 | backup->sync = MIRROR_SYNC_MODE_BITMAP; |
| 3670 | backup->bitmap_mode = BITMAP_SYNC_MODE_ON_SUCCESS; |
| 3671 | } |
| 3672 | |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3673 | if (backup->has_bitmap) { |
| 3674 | bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap); |
| 3675 | if (!bmap) { |
| 3676 | error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap); |
| 3677 | return NULL; |
| 3678 | } |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3679 | if (!backup->has_bitmap_mode) { |
| 3680 | error_setg(errp, "Bitmap sync mode must be given " |
| 3681 | "when providing a bitmap"); |
| 3682 | return NULL; |
| 3683 | } |
John Snow | b30ffbe | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 3684 | if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3685 | return NULL; |
| 3686 | } |
John Snow | 1a2b8b4 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 3687 | |
| 3688 | /* This does not produce a useful bitmap artifact: */ |
| 3689 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
| 3690 | error_setg(errp, "sync mode '%s' does not produce meaningful bitmap" |
| 3691 | " outputs", MirrorSyncMode_str(backup->sync)); |
| 3692 | return NULL; |
| 3693 | } |
| 3694 | |
| 3695 | /* If the bitmap isn't used for input or output, this is useless: */ |
| 3696 | if (backup->bitmap_mode == BITMAP_SYNC_MODE_NEVER && |
| 3697 | backup->sync != MIRROR_SYNC_MODE_BITMAP) { |
| 3698 | error_setg(errp, "Bitmap sync mode '%s' has no meaningful effect" |
| 3699 | " when combined with sync mode '%s'", |
| 3700 | BitmapSyncMode_str(backup->bitmap_mode), |
| 3701 | MirrorSyncMode_str(backup->sync)); |
| 3702 | return NULL; |
| 3703 | } |
| 3704 | } |
| 3705 | |
| 3706 | if (!backup->has_bitmap && backup->has_bitmap_mode) { |
| 3707 | error_setg(errp, "Cannot specify bitmap sync mode without a bitmap"); |
| 3708 | return NULL; |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3709 | } |
| 3710 | |
| 3711 | if (!backup->auto_finalize) { |
| 3712 | job_flags |= JOB_MANUAL_FINALIZE; |
| 3713 | } |
| 3714 | if (!backup->auto_dismiss) { |
| 3715 | job_flags |= JOB_MANUAL_DISMISS; |
| 3716 | } |
| 3717 | |
| 3718 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3719 | backup->sync, bmap, backup->bitmap_mode, |
| 3720 | backup->compress, |
Vladimir Sementsov-Ogievskiy | 00e30f0 | 2019-10-01 16:14:09 +0300 | [diff] [blame] | 3721 | backup->filter_node_name, |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3722 | backup->on_source_error, |
| 3723 | backup->on_target_error, |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3724 | job_flags, NULL, NULL, txn, errp); |
| 3725 | return job; |
| 3726 | } |
| 3727 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 3728 | void qmp_drive_backup(DriveBackup *backup, Error **errp) |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 3729 | { |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 3730 | TransactionAction action = { |
| 3731 | .type = TRANSACTION_ACTION_KIND_DRIVE_BACKUP, |
| 3732 | .u.drive_backup.data = backup, |
| 3733 | }; |
| 3734 | blockdev_do_action(&action, errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3735 | } |
| 3736 | |
Peter Krempa | facda54 | 2020-01-20 09:50:49 +0100 | [diff] [blame] | 3737 | BlockDeviceInfoList *qmp_query_named_block_nodes(bool has_flat, |
| 3738 | bool flat, |
| 3739 | Error **errp) |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3740 | { |
Peter Krempa | facda54 | 2020-01-20 09:50:49 +0100 | [diff] [blame] | 3741 | bool return_flat = has_flat && flat; |
| 3742 | |
| 3743 | return bdrv_named_nodes_list(return_flat, errp); |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 3744 | } |
| 3745 | |
Vladimir Sementsov-Ogievskiy | 5d3b4e9 | 2018-12-21 20:09:07 +0300 | [diff] [blame] | 3746 | XDbgBlockGraph *qmp_x_debug_query_block_graph(Error **errp) |
| 3747 | { |
| 3748 | return bdrv_get_xdbg_block_graph(errp); |
| 3749 | } |
| 3750 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 3751 | void qmp_blockdev_backup(BlockdevBackup *backup, Error **errp) |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 3752 | { |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 3753 | TransactionAction action = { |
| 3754 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP, |
| 3755 | .u.blockdev_backup.data = backup, |
| 3756 | }; |
| 3757 | blockdev_do_action(&action, errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 3758 | } |
| 3759 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3760 | /* Parameter check and block job starting for drive mirroring. |
| 3761 | * Caller should hold @device and @target's aio context (must be the same). |
| 3762 | **/ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3763 | static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3764 | BlockDriverState *target, |
| 3765 | bool has_replaces, const char *replaces, |
| 3766 | enum MirrorSyncMode sync, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3767 | BlockMirrorBackingMode backing_mode, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3768 | bool zero_target, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3769 | bool has_speed, int64_t speed, |
| 3770 | bool has_granularity, uint32_t granularity, |
| 3771 | bool has_buf_size, int64_t buf_size, |
| 3772 | bool has_on_source_error, |
| 3773 | BlockdevOnError on_source_error, |
| 3774 | bool has_on_target_error, |
| 3775 | BlockdevOnError on_target_error, |
| 3776 | bool has_unmap, bool unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3777 | bool has_filter_node_name, |
| 3778 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3779 | bool has_copy_mode, MirrorCopyMode copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3780 | bool has_auto_finalize, bool auto_finalize, |
| 3781 | bool has_auto_dismiss, bool auto_dismiss, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3782 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3783 | { |
John Snow | a1999b3 | 2018-09-06 09:02:11 -0400 | [diff] [blame] | 3784 | int job_flags = JOB_DEFAULT; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3785 | |
| 3786 | if (!has_speed) { |
| 3787 | speed = 0; |
| 3788 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 3789 | if (!has_on_source_error) { |
| 3790 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3791 | } |
| 3792 | if (!has_on_target_error) { |
| 3793 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 3794 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3795 | if (!has_granularity) { |
| 3796 | granularity = 0; |
| 3797 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3798 | if (!has_buf_size) { |
Wen Congyang | 48ac0a4 | 2015-05-15 15:51:36 +0800 | [diff] [blame] | 3799 | buf_size = 0; |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3800 | } |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 3801 | if (!has_unmap) { |
| 3802 | unmap = true; |
| 3803 | } |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3804 | if (!has_filter_node_name) { |
| 3805 | filter_node_name = NULL; |
| 3806 | } |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3807 | if (!has_copy_mode) { |
| 3808 | copy_mode = MIRROR_COPY_MODE_BACKGROUND; |
| 3809 | } |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3810 | if (has_auto_finalize && !auto_finalize) { |
| 3811 | job_flags |= JOB_MANUAL_FINALIZE; |
| 3812 | } |
| 3813 | if (has_auto_dismiss && !auto_dismiss) { |
| 3814 | job_flags |= JOB_MANUAL_DISMISS; |
| 3815 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3816 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3817 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3818 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3819 | "a value in range [512B, 64MB]"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3820 | return; |
| 3821 | } |
| 3822 | if (granularity & (granularity - 1)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3823 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3824 | "power of 2"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3825 | return; |
| 3826 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3827 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3828 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3829 | return; |
| 3830 | } |
Fam Zheng | e40e502 | 2015-12-24 12:45:04 +0800 | [diff] [blame] | 3831 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
| 3832 | return; |
| 3833 | } |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3834 | |
| 3835 | if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) { |
| 3836 | sync = MIRROR_SYNC_MODE_FULL; |
| 3837 | } |
| 3838 | |
Max Reitz | 74ce9e4 | 2019-02-13 23:53:01 +0100 | [diff] [blame] | 3839 | if (has_replaces) { |
| 3840 | BlockDriverState *to_replace_bs; |
| 3841 | AioContext *replace_aio_context; |
| 3842 | int64_t bs_size, replace_size; |
| 3843 | |
| 3844 | bs_size = bdrv_getlength(bs); |
| 3845 | if (bs_size < 0) { |
| 3846 | error_setg_errno(errp, -bs_size, "Failed to query device's size"); |
| 3847 | return; |
| 3848 | } |
| 3849 | |
| 3850 | to_replace_bs = check_to_replace_node(bs, replaces, errp); |
| 3851 | if (!to_replace_bs) { |
| 3852 | return; |
| 3853 | } |
| 3854 | |
| 3855 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
| 3856 | aio_context_acquire(replace_aio_context); |
| 3857 | replace_size = bdrv_getlength(to_replace_bs); |
| 3858 | aio_context_release(replace_aio_context); |
| 3859 | |
| 3860 | if (replace_size < 0) { |
| 3861 | error_setg_errno(errp, -replace_size, |
| 3862 | "Failed to query the replacement node's size"); |
| 3863 | return; |
| 3864 | } |
| 3865 | if (bs_size != replace_size) { |
| 3866 | error_setg(errp, "cannot replace image with a mirror image of " |
| 3867 | "different size"); |
| 3868 | return; |
| 3869 | } |
| 3870 | } |
| 3871 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3872 | /* pass the node name to replace to mirror start since it's loose coupling |
| 3873 | * and will allow to check whether the node still exist at mirror completion |
| 3874 | */ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3875 | mirror_start(job_id, bs, target, |
John Snow | a1999b3 | 2018-09-06 09:02:11 -0400 | [diff] [blame] | 3876 | has_replaces ? replaces : NULL, job_flags, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3877 | speed, granularity, buf_size, sync, backing_mode, zero_target, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3878 | on_source_error, on_target_error, unmap, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3879 | copy_mode, errp); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3880 | } |
| 3881 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3882 | void qmp_drive_mirror(DriveMirror *arg, Error **errp) |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3883 | { |
| 3884 | BlockDriverState *bs; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3885 | BlockDriverState *source, *target_bs; |
| 3886 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3887 | AioContext *old_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3888 | BlockMirrorBackingMode backing_mode; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3889 | Error *local_err = NULL; |
| 3890 | QDict *options = NULL; |
| 3891 | int flags; |
| 3892 | int64_t size; |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3893 | const char *format = arg->format; |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3894 | bool zero_target; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3895 | int ret; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3896 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3897 | bs = qmp_get_root_bs(arg->device, errp); |
| 3898 | if (!bs) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3899 | return; |
| 3900 | } |
| 3901 | |
Paolo Bonzini | cb2af91 | 2018-02-07 17:29:20 +0100 | [diff] [blame] | 3902 | /* Early check to avoid creating target */ |
| 3903 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3904 | return; |
| 3905 | } |
| 3906 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3907 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3908 | aio_context_acquire(aio_context); |
| 3909 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3910 | if (!arg->has_mode) { |
| 3911 | arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3912 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3913 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3914 | if (!arg->has_format) { |
| 3915 | format = (arg->mode == NEW_IMAGE_MODE_EXISTING |
| 3916 | ? NULL : bs->drv->format_name); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3917 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3918 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 3919 | flags = bs->open_flags | BDRV_O_RDWR; |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 3920 | source = backing_bs(bs); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3921 | if (!source && arg->sync == MIRROR_SYNC_MODE_TOP) { |
| 3922 | arg->sync = MIRROR_SYNC_MODE_FULL; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3923 | } |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3924 | if (arg->sync == MIRROR_SYNC_MODE_NONE) { |
Max Reitz | 117e0c8 | 2013-11-25 20:28:55 +0100 | [diff] [blame] | 3925 | source = bs; |
| 3926 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3927 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3928 | size = bdrv_getlength(bs); |
| 3929 | if (size < 0) { |
| 3930 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3931 | goto out; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3932 | } |
| 3933 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3934 | if (arg->has_replaces) { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3935 | if (!arg->has_node_name) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3936 | error_setg(errp, "a node-name must be provided when replacing a" |
| 3937 | " named node of the graph"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3938 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3939 | } |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3940 | } |
| 3941 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3942 | if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) { |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3943 | backing_mode = MIRROR_SOURCE_BACKING_CHAIN; |
| 3944 | } else { |
| 3945 | backing_mode = MIRROR_OPEN_BACKING_CHAIN; |
| 3946 | } |
| 3947 | |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3948 | /* Don't open backing image in create() */ |
| 3949 | flags |= BDRV_O_NO_BACKING; |
| 3950 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3951 | if ((arg->sync == MIRROR_SYNC_MODE_FULL || !source) |
| 3952 | && arg->mode != NEW_IMAGE_MODE_EXISTING) |
Max Reitz | 1452686 | 2013-11-06 19:50:44 +0100 | [diff] [blame] | 3953 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3954 | /* create new image w/o backing file */ |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3955 | assert(format); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3956 | bdrv_img_create(arg->target, format, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3957 | NULL, NULL, NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3958 | } else { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3959 | switch (arg->mode) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3960 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3961 | break; |
| 3962 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
| 3963 | /* create new image with backing file */ |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 3964 | bdrv_refresh_filename(source); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3965 | bdrv_img_create(arg->target, format, |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3966 | source->filename, |
| 3967 | source->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3968 | NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3969 | break; |
| 3970 | default: |
| 3971 | abort(); |
| 3972 | } |
| 3973 | } |
| 3974 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3975 | if (local_err) { |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3976 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3977 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3978 | } |
| 3979 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3980 | options = qdict_new(); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3981 | if (arg->has_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3982 | qdict_put_str(options, "node-name", arg->node_name); |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3983 | } |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3984 | if (format) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3985 | qdict_put_str(options, "driver", format); |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3986 | } |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3987 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 3988 | /* Mirroring takes care of copy-on-write using the source's backing |
| 3989 | * file. |
| 3990 | */ |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3991 | target_bs = bdrv_open(arg->target, NULL, options, flags, errp); |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 3992 | if (!target_bs) { |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3993 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3994 | } |
| 3995 | |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3996 | zero_target = (arg->sync == MIRROR_SYNC_MODE_FULL && |
| 3997 | (arg->mode == NEW_IMAGE_MODE_EXISTING || |
| 3998 | !bdrv_has_zero_init(target_bs))); |
| 3999 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 4000 | |
| 4001 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 4002 | old_context = bdrv_get_aio_context(target_bs); |
| 4003 | aio_context_release(aio_context); |
| 4004 | aio_context_acquire(old_context); |
| 4005 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 4006 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
| 4007 | if (ret < 0) { |
| 4008 | bdrv_unref(target_bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 4009 | aio_context_release(old_context); |
| 4010 | return; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 4011 | } |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 4012 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 4013 | aio_context_release(old_context); |
| 4014 | aio_context_acquire(aio_context); |
| 4015 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 4016 | blockdev_mirror_common(arg->has_job_id ? arg->job_id : NULL, bs, target_bs, |
| 4017 | arg->has_replaces, arg->replaces, arg->sync, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 4018 | backing_mode, zero_target, |
| 4019 | arg->has_speed, arg->speed, |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 4020 | arg->has_granularity, arg->granularity, |
| 4021 | arg->has_buf_size, arg->buf_size, |
| 4022 | arg->has_on_source_error, arg->on_source_error, |
| 4023 | arg->has_on_target_error, arg->on_target_error, |
| 4024 | arg->has_unmap, arg->unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 4025 | false, NULL, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 4026 | arg->has_copy_mode, arg->copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 4027 | arg->has_auto_finalize, arg->auto_finalize, |
| 4028 | arg->has_auto_dismiss, arg->auto_dismiss, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 4029 | &local_err); |
Kevin Wolf | e253f4b | 2016-04-12 16:17:41 +0200 | [diff] [blame] | 4030 | bdrv_unref(target_bs); |
Eduardo Habkost | 621ff94 | 2016-06-13 18:57:56 -0300 | [diff] [blame] | 4031 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 4032 | out: |
| 4033 | aio_context_release(aio_context); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 4034 | } |
| 4035 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 4036 | void qmp_blockdev_mirror(bool has_job_id, const char *job_id, |
| 4037 | const char *device, const char *target, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4038 | bool has_replaces, const char *replaces, |
| 4039 | MirrorSyncMode sync, |
| 4040 | bool has_speed, int64_t speed, |
| 4041 | bool has_granularity, uint32_t granularity, |
| 4042 | bool has_buf_size, int64_t buf_size, |
| 4043 | bool has_on_source_error, |
| 4044 | BlockdevOnError on_source_error, |
| 4045 | bool has_on_target_error, |
| 4046 | BlockdevOnError on_target_error, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 4047 | bool has_filter_node_name, |
| 4048 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 4049 | bool has_copy_mode, MirrorCopyMode copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 4050 | bool has_auto_finalize, bool auto_finalize, |
| 4051 | bool has_auto_dismiss, bool auto_dismiss, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4052 | Error **errp) |
| 4053 | { |
| 4054 | BlockDriverState *bs; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4055 | BlockDriverState *target_bs; |
| 4056 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 4057 | AioContext *old_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 4058 | BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4059 | Error *local_err = NULL; |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 4060 | bool zero_target; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 4061 | int ret; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4062 | |
Kevin Wolf | 07eec65 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 4063 | bs = qmp_get_root_bs(device, errp); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4064 | if (!bs) { |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4065 | return; |
| 4066 | } |
| 4067 | |
| 4068 | target_bs = bdrv_lookup_bs(target, target, errp); |
| 4069 | if (!target_bs) { |
| 4070 | return; |
| 4071 | } |
| 4072 | |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 4073 | zero_target = (sync == MIRROR_SYNC_MODE_FULL); |
| 4074 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 4075 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 4076 | old_context = bdrv_get_aio_context(target_bs); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4077 | aio_context = bdrv_get_aio_context(bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 4078 | aio_context_acquire(old_context); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4079 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 4080 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 4081 | |
| 4082 | aio_context_release(old_context); |
| 4083 | aio_context_acquire(aio_context); |
| 4084 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 4085 | if (ret < 0) { |
| 4086 | goto out; |
| 4087 | } |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4088 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 4089 | blockdev_mirror_common(has_job_id ? job_id : NULL, bs, target_bs, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 4090 | has_replaces, replaces, sync, backing_mode, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 4091 | zero_target, has_speed, speed, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4092 | has_granularity, granularity, |
| 4093 | has_buf_size, buf_size, |
| 4094 | has_on_source_error, on_source_error, |
| 4095 | has_on_target_error, on_target_error, |
| 4096 | true, true, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 4097 | has_filter_node_name, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 4098 | has_copy_mode, copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 4099 | has_auto_finalize, auto_finalize, |
| 4100 | has_auto_dismiss, auto_dismiss, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4101 | &local_err); |
Eduardo Habkost | 621ff94 | 2016-06-13 18:57:56 -0300 | [diff] [blame] | 4102 | error_propagate(errp, local_err); |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 4103 | out: |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 4104 | aio_context_release(aio_context); |
| 4105 | } |
| 4106 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 4107 | /* Get a block job using its ID and acquire its AioContext */ |
| 4108 | static BlockJob *find_block_job(const char *id, AioContext **aio_context, |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 4109 | Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 4110 | { |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 4111 | BlockJob *job; |
| 4112 | |
| 4113 | assert(id != NULL); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 4114 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 4115 | *aio_context = NULL; |
| 4116 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 4117 | job = block_job_get(id); |
| 4118 | |
| 4119 | if (!job) { |
| 4120 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
| 4121 | "Block job '%s' not found", id); |
| 4122 | return NULL; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 4123 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4124 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 4125 | *aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4126 | aio_context_acquire(*aio_context); |
| 4127 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 4128 | return job; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 4129 | } |
| 4130 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 4131 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 4132 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4133 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 4134 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 4135 | |
| 4136 | if (!job) { |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 4137 | return; |
| 4138 | } |
| 4139 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 4140 | block_job_set_speed(job, speed, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4141 | aio_context_release(aio_context); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 4142 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 4143 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 4144 | void qmp_block_job_cancel(const char *device, |
| 4145 | bool has_force, bool force, Error **errp) |
| 4146 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4147 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 4148 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 4149 | |
| 4150 | if (!job) { |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 4151 | return; |
| 4152 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4153 | |
| 4154 | if (!has_force) { |
| 4155 | force = false; |
| 4156 | } |
| 4157 | |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 4158 | if (job_user_paused(&job->job) && !force) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 4159 | error_setg(errp, "The block job for device '%s' is currently paused", |
| 4160 | device); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4161 | goto out; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 4162 | } |
| 4163 | |
| 4164 | trace_qmp_block_job_cancel(job); |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 4165 | job_user_cancel(&job->job, force, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4166 | out: |
| 4167 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 4168 | } |
| 4169 | |
| 4170 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 4171 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4172 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 4173 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 4174 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 4175 | if (!job) { |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 4176 | return; |
| 4177 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 4178 | |
| 4179 | trace_qmp_block_job_pause(job); |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 4180 | job_user_pause(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4181 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 4182 | } |
| 4183 | |
| 4184 | void qmp_block_job_resume(const char *device, Error **errp) |
| 4185 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4186 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 4187 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 4188 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 4189 | if (!job) { |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 4190 | return; |
| 4191 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 4192 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 4193 | trace_qmp_block_job_resume(job); |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 4194 | job_user_resume(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4195 | aio_context_release(aio_context); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 4196 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4197 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 4198 | void qmp_block_job_complete(const char *device, Error **errp) |
| 4199 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4200 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 4201 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 4202 | |
| 4203 | if (!job) { |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 4204 | return; |
| 4205 | } |
| 4206 | |
| 4207 | trace_qmp_block_job_complete(job); |
Kevin Wolf | 3453d97 | 2018-04-23 12:24:16 +0200 | [diff] [blame] | 4208 | job_complete(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 4209 | aio_context_release(aio_context); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 4210 | } |
| 4211 | |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 4212 | void qmp_block_job_finalize(const char *id, Error **errp) |
| 4213 | { |
| 4214 | AioContext *aio_context; |
| 4215 | BlockJob *job = find_block_job(id, &aio_context, errp); |
| 4216 | |
| 4217 | if (!job) { |
| 4218 | return; |
| 4219 | } |
| 4220 | |
| 4221 | trace_qmp_block_job_finalize(job); |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 4222 | job_finalize(&job->job, errp); |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 4223 | aio_context_release(aio_context); |
| 4224 | } |
| 4225 | |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 4226 | void qmp_block_job_dismiss(const char *id, Error **errp) |
| 4227 | { |
| 4228 | AioContext *aio_context; |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 4229 | BlockJob *bjob = find_block_job(id, &aio_context, errp); |
| 4230 | Job *job; |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 4231 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 4232 | if (!bjob) { |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 4233 | return; |
| 4234 | } |
| 4235 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 4236 | trace_qmp_block_job_dismiss(bjob); |
| 4237 | job = &bjob->job; |
| 4238 | job_dismiss(&job, errp); |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 4239 | aio_context_release(aio_context); |
| 4240 | } |
| 4241 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4242 | void qmp_change_backing_file(const char *device, |
| 4243 | const char *image_node_name, |
| 4244 | const char *backing_file, |
| 4245 | Error **errp) |
| 4246 | { |
| 4247 | BlockDriverState *bs = NULL; |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4248 | AioContext *aio_context; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4249 | BlockDriverState *image_bs = NULL; |
| 4250 | Error *local_err = NULL; |
| 4251 | bool ro; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4252 | int ret; |
| 4253 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 4254 | bs = qmp_get_root_bs(device, errp); |
| 4255 | if (!bs) { |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4256 | return; |
| 4257 | } |
| 4258 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 4259 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4260 | aio_context_acquire(aio_context); |
| 4261 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4262 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
| 4263 | if (local_err) { |
| 4264 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4265 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4266 | } |
| 4267 | |
| 4268 | if (!image_bs) { |
| 4269 | error_setg(errp, "image file not found"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4270 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4271 | } |
| 4272 | |
| 4273 | if (bdrv_find_base(image_bs) == image_bs) { |
| 4274 | error_setg(errp, "not allowing backing file change on an image " |
| 4275 | "without a backing file"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4276 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4277 | } |
| 4278 | |
| 4279 | /* even though we are not necessarily operating on bs, we need it to |
| 4280 | * determine if block ops are currently prohibited on the chain */ |
| 4281 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4282 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4283 | } |
| 4284 | |
| 4285 | /* final sanity check */ |
| 4286 | if (!bdrv_chain_contains(bs, image_bs)) { |
| 4287 | error_setg(errp, "'%s' and image file are not in the same chain", |
| 4288 | device); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4289 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4290 | } |
| 4291 | |
| 4292 | /* if not r/w, reopen to make r/w */ |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4293 | ro = bdrv_is_read_only(image_bs); |
| 4294 | |
| 4295 | if (ro) { |
Alberto Garcia | 051a60f | 2018-11-12 16:00:38 +0200 | [diff] [blame] | 4296 | if (bdrv_reopen_set_read_only(image_bs, false, errp) != 0) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4297 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4298 | } |
| 4299 | } |
| 4300 | |
| 4301 | ret = bdrv_change_backing_file(image_bs, backing_file, |
| 4302 | image_bs->drv ? image_bs->drv->format_name : ""); |
| 4303 | |
| 4304 | if (ret < 0) { |
| 4305 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", |
| 4306 | backing_file); |
| 4307 | /* don't exit here, so we can try to restore open flags if |
| 4308 | * appropriate */ |
| 4309 | } |
| 4310 | |
| 4311 | if (ro) { |
Alberto Garcia | 051a60f | 2018-11-12 16:00:38 +0200 | [diff] [blame] | 4312 | bdrv_reopen_set_read_only(image_bs, true, &local_err); |
Eduardo Habkost | 621ff94 | 2016-06-13 18:57:56 -0300 | [diff] [blame] | 4313 | error_propagate(errp, local_err); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4314 | } |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 4315 | |
| 4316 | out: |
| 4317 | aio_context_release(aio_context); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 4318 | } |
| 4319 | |
Kevin Wolf | abb21ac | 2016-02-23 17:33:24 +0100 | [diff] [blame] | 4320 | void hmp_drive_add_node(Monitor *mon, const char *optstr) |
| 4321 | { |
| 4322 | QemuOpts *opts; |
| 4323 | QDict *qdict; |
| 4324 | Error *local_err = NULL; |
| 4325 | |
| 4326 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); |
| 4327 | if (!opts) { |
| 4328 | return; |
| 4329 | } |
| 4330 | |
| 4331 | qdict = qemu_opts_to_qdict(opts, NULL); |
| 4332 | |
| 4333 | if (!qdict_get_try_str(qdict, "node-name")) { |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 4334 | qobject_unref(qdict); |
Kevin Wolf | abb21ac | 2016-02-23 17:33:24 +0100 | [diff] [blame] | 4335 | error_report("'node-name' needs to be specified"); |
| 4336 | goto out; |
| 4337 | } |
| 4338 | |
| 4339 | BlockDriverState *bs = bds_tree_init(qdict, &local_err); |
| 4340 | if (!bs) { |
| 4341 | error_report_err(local_err); |
| 4342 | goto out; |
| 4343 | } |
| 4344 | |
| 4345 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 4346 | |
| 4347 | out: |
| 4348 | qemu_opts_del(opts); |
| 4349 | } |
| 4350 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4351 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 4352 | { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 4353 | BlockDriverState *bs; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4354 | QObject *obj; |
Daniel P. Berrange | 7d5e199 | 2016-09-30 15:45:28 +0100 | [diff] [blame] | 4355 | Visitor *v = qobject_output_visitor_new(&obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4356 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4357 | Error *local_err = NULL; |
| 4358 | |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 4359 | visit_type_BlockdevOptions(v, NULL, &options, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 4360 | if (local_err) { |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4361 | error_propagate(errp, local_err); |
| 4362 | goto fail; |
| 4363 | } |
| 4364 | |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 4365 | visit_complete(v, &obj); |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 4366 | qdict = qobject_to(QDict, obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4367 | |
| 4368 | qdict_flatten(qdict); |
| 4369 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4370 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 4371 | error_setg(errp, "'node-name' must be specified for the root node"); |
| 4372 | goto fail; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4373 | } |
| 4374 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4375 | bs = bds_tree_init(qdict, errp); |
| 4376 | if (!bs) { |
| 4377 | goto fail; |
| 4378 | } |
| 4379 | |
| 4380 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 4381 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4382 | fail: |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 4383 | visit_free(v); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 4384 | } |
| 4385 | |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 4386 | void qmp_x_blockdev_reopen(BlockdevOptions *options, Error **errp) |
| 4387 | { |
| 4388 | BlockDriverState *bs; |
| 4389 | AioContext *ctx; |
| 4390 | QObject *obj; |
| 4391 | Visitor *v = qobject_output_visitor_new(&obj); |
| 4392 | Error *local_err = NULL; |
| 4393 | BlockReopenQueue *queue; |
| 4394 | QDict *qdict; |
| 4395 | |
| 4396 | /* Check for the selected node name */ |
| 4397 | if (!options->has_node_name) { |
| 4398 | error_setg(errp, "Node name not specified"); |
| 4399 | goto fail; |
| 4400 | } |
| 4401 | |
| 4402 | bs = bdrv_find_node(options->node_name); |
| 4403 | if (!bs) { |
| 4404 | error_setg(errp, "Cannot find node named '%s'", options->node_name); |
| 4405 | goto fail; |
| 4406 | } |
| 4407 | |
| 4408 | /* Put all options in a QDict and flatten it */ |
| 4409 | visit_type_BlockdevOptions(v, NULL, &options, &local_err); |
| 4410 | if (local_err) { |
| 4411 | error_propagate(errp, local_err); |
| 4412 | goto fail; |
| 4413 | } |
| 4414 | |
| 4415 | visit_complete(v, &obj); |
| 4416 | qdict = qobject_to(QDict, obj); |
| 4417 | |
| 4418 | qdict_flatten(qdict); |
| 4419 | |
| 4420 | /* Perform the reopen operation */ |
| 4421 | ctx = bdrv_get_aio_context(bs); |
| 4422 | aio_context_acquire(ctx); |
| 4423 | bdrv_subtree_drained_begin(bs); |
| 4424 | queue = bdrv_reopen_queue(NULL, bs, qdict, false); |
| 4425 | bdrv_reopen_multiple(queue, errp); |
| 4426 | bdrv_subtree_drained_end(bs); |
| 4427 | aio_context_release(ctx); |
| 4428 | |
| 4429 | fail: |
| 4430 | visit_free(v); |
| 4431 | } |
| 4432 | |
Markus Armbruster | 79b7a77 | 2017-03-21 17:53:28 +0100 | [diff] [blame] | 4433 | void qmp_blockdev_del(const char *node_name, Error **errp) |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4434 | { |
| 4435 | AioContext *aio_context; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4436 | BlockDriverState *bs; |
| 4437 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4438 | bs = bdrv_find_node(node_name); |
| 4439 | if (!bs) { |
| 4440 | error_setg(errp, "Cannot find node %s", node_name); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4441 | return; |
| 4442 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4443 | if (bdrv_has_blk(bs)) { |
| 4444 | error_setg(errp, "Node %s is in use", node_name); |
| 4445 | return; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4446 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4447 | aio_context = bdrv_get_aio_context(bs); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4448 | aio_context_acquire(aio_context); |
| 4449 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4450 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
| 4451 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4452 | } |
| 4453 | |
Paolo Bonzini | 70537ed | 2018-12-06 23:00:09 +0100 | [diff] [blame] | 4454 | if (!QTAILQ_IN_USE(bs, monitor_list)) { |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4455 | error_setg(errp, "Node %s is not owned by the monitor", |
| 4456 | bs->node_name); |
| 4457 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4458 | } |
| 4459 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 4460 | if (bs->refcnt > 1) { |
| 4461 | error_setg(errp, "Block device %s is in use", |
| 4462 | bdrv_get_device_or_node_name(bs)); |
| 4463 | goto out; |
| 4464 | } |
| 4465 | |
| 4466 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
| 4467 | bdrv_unref(bs); |
| 4468 | |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 4469 | out: |
| 4470 | aio_context_release(aio_context); |
| 4471 | } |
| 4472 | |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 4473 | static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs, |
| 4474 | const char *child_name) |
| 4475 | { |
| 4476 | BdrvChild *child; |
| 4477 | |
| 4478 | QLIST_FOREACH(child, &parent_bs->children, next) { |
| 4479 | if (strcmp(child->name, child_name) == 0) { |
| 4480 | return child; |
| 4481 | } |
| 4482 | } |
| 4483 | |
| 4484 | return NULL; |
| 4485 | } |
| 4486 | |
| 4487 | void qmp_x_blockdev_change(const char *parent, bool has_child, |
| 4488 | const char *child, bool has_node, |
| 4489 | const char *node, Error **errp) |
| 4490 | { |
| 4491 | BlockDriverState *parent_bs, *new_bs = NULL; |
| 4492 | BdrvChild *p_child; |
| 4493 | |
| 4494 | parent_bs = bdrv_lookup_bs(parent, parent, errp); |
| 4495 | if (!parent_bs) { |
| 4496 | return; |
| 4497 | } |
| 4498 | |
| 4499 | if (has_child == has_node) { |
| 4500 | if (has_child) { |
| 4501 | error_setg(errp, "The parameters child and node are in conflict"); |
| 4502 | } else { |
| 4503 | error_setg(errp, "Either child or node must be specified"); |
| 4504 | } |
| 4505 | return; |
| 4506 | } |
| 4507 | |
| 4508 | if (has_child) { |
| 4509 | p_child = bdrv_find_child(parent_bs, child); |
| 4510 | if (!p_child) { |
| 4511 | error_setg(errp, "Node '%s' does not have child '%s'", |
| 4512 | parent, child); |
| 4513 | return; |
| 4514 | } |
| 4515 | bdrv_del_child(parent_bs, p_child, errp); |
| 4516 | } |
| 4517 | |
| 4518 | if (has_node) { |
| 4519 | new_bs = bdrv_find_node(node); |
| 4520 | if (!new_bs) { |
| 4521 | error_setg(errp, "Node '%s' not found", node); |
| 4522 | return; |
| 4523 | } |
| 4524 | bdrv_add_child(parent_bs, new_bs, errp); |
| 4525 | } |
| 4526 | } |
| 4527 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4528 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 4529 | { |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4530 | BlockJobInfoList *head = NULL, **p_next = &head; |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 4531 | BlockJob *job; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4532 | |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 4533 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4534 | BlockJobInfoList *elem; |
| 4535 | AioContext *aio_context; |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4536 | |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4537 | if (block_job_is_internal(job)) { |
| 4538 | continue; |
| 4539 | } |
| 4540 | elem = g_new0(BlockJobInfoList, 1); |
| 4541 | aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4542 | aio_context_acquire(aio_context); |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4543 | elem->value = block_job_query(job, errp); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 4544 | aio_context_release(aio_context); |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 4545 | if (!elem->value) { |
| 4546 | g_free(elem); |
| 4547 | qapi_free_BlockJobInfoList(head); |
| 4548 | return NULL; |
| 4549 | } |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 4550 | *p_next = elem; |
| 4551 | p_next = &elem->next; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 4552 | } |
| 4553 | |
| 4554 | return head; |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 4555 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4556 | |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4557 | void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 4558 | bool has_force, bool force, Error **errp) |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4559 | { |
| 4560 | AioContext *old_context; |
| 4561 | AioContext *new_context; |
| 4562 | BlockDriverState *bs; |
| 4563 | |
| 4564 | bs = bdrv_find_node(node_name); |
| 4565 | if (!bs) { |
| 4566 | error_setg(errp, "Cannot find node %s", node_name); |
| 4567 | return; |
| 4568 | } |
| 4569 | |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 4570 | /* Protects against accidents. */ |
| 4571 | if (!(has_force && force) && bdrv_has_blk(bs)) { |
| 4572 | error_setg(errp, "Node %s is associated with a BlockBackend and could " |
| 4573 | "be in use (use force=true to override this check)", |
| 4574 | node_name); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4575 | return; |
| 4576 | } |
| 4577 | |
| 4578 | if (iothread->type == QTYPE_QSTRING) { |
| 4579 | IOThread *obj = iothread_by_id(iothread->u.s); |
| 4580 | if (!obj) { |
| 4581 | error_setg(errp, "Cannot find iothread %s", iothread->u.s); |
| 4582 | return; |
| 4583 | } |
| 4584 | |
| 4585 | new_context = iothread_get_aio_context(obj); |
| 4586 | } else { |
| 4587 | new_context = qemu_get_aio_context(); |
| 4588 | } |
| 4589 | |
| 4590 | old_context = bdrv_get_aio_context(bs); |
| 4591 | aio_context_acquire(old_context); |
| 4592 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 4593 | bdrv_try_set_aio_context(bs, new_context, errp); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 4594 | |
| 4595 | aio_context_release(old_context); |
| 4596 | } |
| 4597 | |
Vladimir Sementsov-Ogievskiy | cb8aac3 | 2019-03-05 15:53:17 +0300 | [diff] [blame] | 4598 | void qmp_block_latency_histogram_set( |
Vladimir Sementsov-Ogievskiy | af0a226 | 2019-03-05 15:53:16 +0300 | [diff] [blame] | 4599 | const char *id, |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4600 | bool has_boundaries, uint64List *boundaries, |
| 4601 | bool has_boundaries_read, uint64List *boundaries_read, |
| 4602 | bool has_boundaries_write, uint64List *boundaries_write, |
| 4603 | bool has_boundaries_flush, uint64List *boundaries_flush, |
| 4604 | Error **errp) |
| 4605 | { |
Vladimir Sementsov-Ogievskiy | af0a226 | 2019-03-05 15:53:16 +0300 | [diff] [blame] | 4606 | BlockBackend *blk = qmp_get_blk(NULL, id, errp); |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4607 | BlockAcctStats *stats; |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4608 | int ret; |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4609 | |
| 4610 | if (!blk) { |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4611 | return; |
| 4612 | } |
Vladimir Sementsov-Ogievskiy | af0a226 | 2019-03-05 15:53:16 +0300 | [diff] [blame] | 4613 | |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4614 | stats = blk_get_stats(blk); |
| 4615 | |
| 4616 | if (!has_boundaries && !has_boundaries_read && !has_boundaries_write && |
| 4617 | !has_boundaries_flush) |
| 4618 | { |
| 4619 | block_latency_histograms_clear(stats); |
| 4620 | return; |
| 4621 | } |
| 4622 | |
| 4623 | if (has_boundaries || has_boundaries_read) { |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4624 | ret = block_latency_histogram_set( |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4625 | stats, BLOCK_ACCT_READ, |
| 4626 | has_boundaries_read ? boundaries_read : boundaries); |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4627 | if (ret) { |
Vladimir Sementsov-Ogievskiy | af0a226 | 2019-03-05 15:53:16 +0300 | [diff] [blame] | 4628 | error_setg(errp, "Device '%s' set read boundaries fail", id); |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4629 | return; |
| 4630 | } |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4631 | } |
| 4632 | |
| 4633 | if (has_boundaries || has_boundaries_write) { |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4634 | ret = block_latency_histogram_set( |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4635 | stats, BLOCK_ACCT_WRITE, |
| 4636 | has_boundaries_write ? boundaries_write : boundaries); |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4637 | if (ret) { |
Vladimir Sementsov-Ogievskiy | af0a226 | 2019-03-05 15:53:16 +0300 | [diff] [blame] | 4638 | error_setg(errp, "Device '%s' set write boundaries fail", id); |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4639 | return; |
| 4640 | } |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4641 | } |
| 4642 | |
| 4643 | if (has_boundaries || has_boundaries_flush) { |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4644 | ret = block_latency_histogram_set( |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4645 | stats, BLOCK_ACCT_FLUSH, |
| 4646 | has_boundaries_flush ? boundaries_flush : boundaries); |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4647 | if (ret) { |
Vladimir Sementsov-Ogievskiy | af0a226 | 2019-03-05 15:53:16 +0300 | [diff] [blame] | 4648 | error_setg(errp, "Device '%s' set flush boundaries fail", id); |
zhenwei pi | 63d5341 | 2018-11-05 11:04:56 +0800 | [diff] [blame] | 4649 | return; |
| 4650 | } |
Vladimir Sementsov-Ogievskiy | 7e5c776 | 2018-03-09 19:52:12 +0300 | [diff] [blame] | 4651 | } |
| 4652 | } |
| 4653 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4654 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4655 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4656 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4657 | .desc = { |
| 4658 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4659 | .name = "snapshot", |
| 4660 | .type = QEMU_OPT_BOOL, |
| 4661 | .help = "enable/disable snapshot mode", |
| 4662 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4663 | .name = "aio", |
| 4664 | .type = QEMU_OPT_STRING, |
Aarushi Mehta | f80f267 | 2020-01-20 14:18:50 +0000 | [diff] [blame] | 4665 | .help = "host AIO implementation (threads, native, io_uring)", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4666 | },{ |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 4667 | .name = BDRV_OPT_CACHE_WB, |
| 4668 | .type = QEMU_OPT_BOOL, |
| 4669 | .help = "Enable writeback mode", |
| 4670 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4671 | .name = "format", |
| 4672 | .type = QEMU_OPT_STRING, |
| 4673 | .help = "disk format (raw, qcow2, ...)", |
| 4674 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4675 | .name = "rerror", |
| 4676 | .type = QEMU_OPT_STRING, |
| 4677 | .help = "read error action", |
| 4678 | },{ |
| 4679 | .name = "werror", |
| 4680 | .type = QEMU_OPT_STRING, |
| 4681 | .help = "write error action", |
| 4682 | },{ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 4683 | .name = BDRV_OPT_READ_ONLY, |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4684 | .type = QEMU_OPT_BOOL, |
| 4685 | .help = "open drive file as read-only", |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 4686 | }, |
| 4687 | |
| 4688 | THROTTLE_OPTS, |
| 4689 | |
| 4690 | { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 4691 | .name = "throttling.group", |
| 4692 | .type = QEMU_OPT_STRING, |
| 4693 | .help = "name of the block throttling group", |
| 4694 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4695 | .name = "copy-on-read", |
| 4696 | .type = QEMU_OPT_BOOL, |
| 4697 | .help = "copy read data from backing file into image file", |
Peter Lieven | 465bee1 | 2014-05-18 00:58:19 +0200 | [diff] [blame] | 4698 | },{ |
| 4699 | .name = "detect-zeroes", |
| 4700 | .type = QEMU_OPT_STRING, |
| 4701 | .help = "try to optimize zero writes (off, on, unmap)", |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 4702 | },{ |
| 4703 | .name = "stats-account-invalid", |
| 4704 | .type = QEMU_OPT_BOOL, |
| 4705 | .help = "whether to account for invalid I/O operations " |
| 4706 | "in the statistics", |
| 4707 | },{ |
| 4708 | .name = "stats-account-failed", |
| 4709 | .type = QEMU_OPT_BOOL, |
| 4710 | .help = "whether to account for failed I/O operations " |
| 4711 | "in the statistics", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 4712 | }, |
| 4713 | { /* end of list */ } |
| 4714 | }, |
| 4715 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4716 | |
| 4717 | QemuOptsList qemu_drive_opts = { |
| 4718 | .name = "drive", |
| 4719 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 4720 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 4721 | /* |
| 4722 | * no elements => accept any params |
| 4723 | * validation will happen later |
| 4724 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 4725 | { /* end of list */ } |
| 4726 | }, |
| 4727 | }; |