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" |
Pavel Dovgalyuk | b39847a | 2020-10-03 20:13:08 +0300 | [diff] [blame] | 62 | #include "sysemu/replay.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 63 | #include "qemu/cutils.h" |
| 64 | #include "qemu/help_option.h" |
Markus Armbruster | db72581 | 2019-08-12 07:23:50 +0200 | [diff] [blame] | 65 | #include "qemu/main-loop.h" |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 66 | #include "qemu/throttle-options.h" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 67 | |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 68 | QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 69 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); |
| 70 | |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 71 | void bdrv_set_monitor_owned(BlockDriverState *bs) |
| 72 | { |
| 73 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 74 | } |
| 75 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 76 | static const char *const if_name[IF_COUNT] = { |
| 77 | [IF_NONE] = "none", |
| 78 | [IF_IDE] = "ide", |
| 79 | [IF_SCSI] = "scsi", |
| 80 | [IF_FLOPPY] = "floppy", |
| 81 | [IF_PFLASH] = "pflash", |
| 82 | [IF_MTD] = "mtd", |
| 83 | [IF_SD] = "sd", |
| 84 | [IF_VIRTIO] = "virtio", |
| 85 | [IF_XEN] = "xen", |
| 86 | }; |
| 87 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 88 | static int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 89 | /* |
| 90 | * Do not change these numbers! They govern how drive option |
| 91 | * index maps to unit and bus. That mapping is ABI. |
| 92 | * |
Wei Jiangang | 547cb15 | 2016-04-26 18:12:43 +0800 | [diff] [blame] | 93 | * All controllers used to implement if=T drives need to support |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 94 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 95 | * Otherwise, some index values map to "impossible" bus, unit |
| 96 | * values. |
| 97 | * |
| 98 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 99 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 100 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 101 | * the drive can't be set up. Regression. |
| 102 | */ |
| 103 | [IF_IDE] = 2, |
| 104 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 105 | }; |
| 106 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 107 | /** |
| 108 | * Boards may call this to offer board-by-board overrides |
| 109 | * of the default, global values. |
| 110 | */ |
| 111 | void override_max_devs(BlockInterfaceType type, int max_devs) |
| 112 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 113 | BlockBackend *blk; |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 114 | DriveInfo *dinfo; |
| 115 | |
| 116 | if (max_devs <= 0) { |
| 117 | return; |
| 118 | } |
| 119 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 120 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 121 | dinfo = blk_legacy_dinfo(blk); |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 122 | if (dinfo->type == type) { |
| 123 | fprintf(stderr, "Cannot override units-per-bus property of" |
| 124 | " the %s interface, because a drive of that type has" |
| 125 | " already been added.\n", if_name[type]); |
| 126 | g_assert_not_reached(); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | if_max_devs[type] = max_devs; |
| 131 | } |
| 132 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 133 | /* |
| 134 | * We automatically delete the drive when a device using it gets |
| 135 | * unplugged. Questionable feature, but we can't just drop it. |
| 136 | * Device models call blockdev_mark_auto_del() to schedule the |
| 137 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 138 | * when deletion is actually safe. |
| 139 | */ |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 140 | void blockdev_mark_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 141 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 142 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 143 | BlockJob *job; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 144 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 145 | if (!dinfo) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 146 | return; |
| 147 | } |
| 148 | |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 149 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
| 150 | if (block_job_has_bdrv(job, blk_bs(blk))) { |
| 151 | AioContext *aio_context = job->job.aio_context; |
| 152 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 153 | |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 154 | job_cancel(&job->job, false); |
| 155 | |
| 156 | aio_context_release(aio_context); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 157 | } |
Paolo Bonzini | 12bde0e | 2012-03-30 13:17:10 +0200 | [diff] [blame] | 158 | } |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 159 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 160 | dinfo->auto_del = 1; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 161 | } |
| 162 | |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 163 | void blockdev_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 164 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 165 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 166 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 167 | if (dinfo && dinfo->auto_del) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 168 | monitor_remove_blk(blk); |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 169 | blk_unref(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 170 | } |
| 171 | } |
| 172 | |
John Snow | d8f94e1 | 2014-10-01 14:19:27 -0400 | [diff] [blame] | 173 | /** |
| 174 | * Returns the current mapping of how many units per bus |
| 175 | * a particular interface can support. |
| 176 | * |
| 177 | * A positive integer indicates n units per bus. |
| 178 | * 0 implies the mapping has not been established. |
| 179 | * -1 indicates an invalid BlockInterfaceType was given. |
| 180 | */ |
| 181 | int drive_get_max_devs(BlockInterfaceType type) |
| 182 | { |
| 183 | if (type >= IF_IDE && type < IF_COUNT) { |
| 184 | return if_max_devs[type]; |
| 185 | } |
| 186 | |
| 187 | return -1; |
| 188 | } |
| 189 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 190 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 191 | { |
| 192 | int max_devs = if_max_devs[type]; |
| 193 | return max_devs ? index / max_devs : 0; |
| 194 | } |
| 195 | |
| 196 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 197 | { |
| 198 | int max_devs = if_max_devs[type]; |
| 199 | return max_devs ? index % max_devs : index; |
| 200 | } |
| 201 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 202 | QemuOpts *drive_def(const char *optstr) |
| 203 | { |
Markus Armbruster | 70b9433 | 2015-02-13 12:50:26 +0100 | [diff] [blame] | 204 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 208 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 209 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 210 | QemuOpts *opts; |
| 211 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 212 | opts = drive_def(optstr); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 213 | if (!opts) { |
| 214 | return NULL; |
| 215 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 216 | if (type != IF_DEFAULT) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 217 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 218 | } |
| 219 | if (index >= 0) { |
Markus Armbruster | a8b18f8 | 2015-02-13 15:50:43 +0100 | [diff] [blame] | 220 | qemu_opt_set_number(opts, "index", index, &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 221 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 222 | if (file) |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 223 | qemu_opt_set(opts, "file", file, &error_abort); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 224 | return opts; |
| 225 | } |
| 226 | |
| 227 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 228 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 229 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 230 | DriveInfo *dinfo; |
| 231 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 232 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 233 | dinfo = blk_legacy_dinfo(blk); |
| 234 | if (dinfo && dinfo->type == type |
| 235 | && dinfo->bus == bus && dinfo->unit == unit) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 236 | return dinfo; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 237 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | return NULL; |
| 241 | } |
| 242 | |
Markus Armbruster | a1b40bd | 2020-06-22 11:42:19 +0200 | [diff] [blame] | 243 | void drive_mark_claimed_by_board(void) |
| 244 | { |
| 245 | BlockBackend *blk; |
| 246 | DriveInfo *dinfo; |
| 247 | |
| 248 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 249 | dinfo = blk_legacy_dinfo(blk); |
| 250 | if (dinfo && blk_get_attached_dev(blk)) { |
| 251 | dinfo->claimed_by_board = true; |
| 252 | } |
| 253 | } |
| 254 | } |
| 255 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 256 | void drive_check_orphaned(void) |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 257 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 258 | BlockBackend *blk; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 259 | DriveInfo *dinfo; |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 260 | Location loc; |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 261 | bool orphans = false; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 262 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 263 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 264 | dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | a1b40bd | 2020-06-22 11:42:19 +0200 | [diff] [blame] | 265 | if (dinfo->is_default || dinfo->type == IF_NONE) { |
| 266 | continue; |
| 267 | } |
| 268 | if (!blk_get_attached_dev(blk)) { |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 269 | loc_push_none(&loc); |
| 270 | qemu_opts_loc_restore(dinfo->opts); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 271 | error_report("machine type does not support" |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 272 | " if=%s,bus=%d,unit=%d", |
| 273 | if_name[dinfo->type], dinfo->bus, dinfo->unit); |
| 274 | loc_pop(&loc); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 275 | orphans = true; |
Markus Armbruster | a1b40bd | 2020-06-22 11:42:19 +0200 | [diff] [blame] | 276 | continue; |
| 277 | } |
| 278 | if (!dinfo->claimed_by_board && dinfo->type != IF_VIRTIO) { |
| 279 | loc_push_none(&loc); |
| 280 | qemu_opts_loc_restore(dinfo->opts); |
| 281 | warn_report("bogus if=%s is deprecated, use if=none", |
| 282 | if_name[dinfo->type]); |
| 283 | loc_pop(&loc); |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 284 | } |
| 285 | } |
| 286 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 287 | if (orphans) { |
| 288 | exit(1); |
| 289 | } |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 290 | } |
| 291 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 292 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 293 | { |
| 294 | return drive_get(type, |
| 295 | drive_index_to_bus_id(type, index), |
| 296 | drive_index_to_unit_id(type, index)); |
| 297 | } |
| 298 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 299 | int drive_get_max_bus(BlockInterfaceType type) |
| 300 | { |
| 301 | int max_bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 302 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 303 | DriveInfo *dinfo; |
| 304 | |
| 305 | max_bus = -1; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 306 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 307 | dinfo = blk_legacy_dinfo(blk); |
| 308 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 309 | max_bus = dinfo->bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 310 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 311 | } |
| 312 | return max_bus; |
| 313 | } |
| 314 | |
Markus Armbruster | 1383997 | 2011-01-28 11:21:37 +0100 | [diff] [blame] | 315 | /* Get a block device. This should only be used for single-drive devices |
| 316 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the |
| 317 | appropriate bus. */ |
| 318 | DriveInfo *drive_get_next(BlockInterfaceType type) |
| 319 | { |
| 320 | static int next_block_unit[IF_COUNT]; |
| 321 | |
| 322 | return drive_get(type, 0, next_block_unit[type]++); |
| 323 | } |
| 324 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 325 | static void bdrv_format_print(void *opaque, const char *name) |
| 326 | { |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 327 | qemu_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 328 | } |
| 329 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 330 | typedef struct { |
| 331 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 332 | BlockDriverState *bs; |
| 333 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 334 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 335 | 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] | 336 | { |
| 337 | if (!strcmp(buf, "ignore")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 338 | return BLOCKDEV_ON_ERROR_IGNORE; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 339 | } else if (!is_read && !strcmp(buf, "enospc")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 340 | return BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 341 | } else if (!strcmp(buf, "stop")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 342 | return BLOCKDEV_ON_ERROR_STOP; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 343 | } else if (!strcmp(buf, "report")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 344 | return BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 345 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 346 | error_setg(errp, "'%s' invalid %s error action", |
| 347 | buf, is_read ? "read" : "write"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 348 | return -1; |
| 349 | } |
| 350 | } |
| 351 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 352 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
| 353 | Error **errp) |
| 354 | { |
| 355 | const QListEntry *entry; |
| 356 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { |
| 357 | switch (qobject_type(entry->value)) { |
| 358 | |
| 359 | case QTYPE_QSTRING: { |
| 360 | unsigned long long length; |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 361 | const char *str = qstring_get_str(qobject_to(QString, |
| 362 | entry->value)); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 363 | if (parse_uint_full(str, &length, 10) == 0 && |
| 364 | length > 0 && length <= UINT_MAX) { |
| 365 | block_acct_add_interval(stats, (unsigned) length); |
| 366 | } else { |
| 367 | error_setg(errp, "Invalid interval length: %s", str); |
| 368 | return false; |
| 369 | } |
| 370 | break; |
| 371 | } |
| 372 | |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 373 | case QTYPE_QNUM: { |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 374 | int64_t length = qnum_get_int(qobject_to(QNum, entry->value)); |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 375 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 376 | if (length > 0 && length <= UINT_MAX) { |
| 377 | block_acct_add_interval(stats, (unsigned) length); |
| 378 | } else { |
| 379 | error_setg(errp, "Invalid interval length: %" PRId64, length); |
| 380 | return false; |
| 381 | } |
| 382 | break; |
| 383 | } |
| 384 | |
| 385 | default: |
| 386 | error_setg(errp, "The specification of stats-intervals is invalid"); |
| 387 | return false; |
| 388 | } |
| 389 | } |
| 390 | return true; |
| 391 | } |
| 392 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 393 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 394 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 395 | /* All parameters but @opts are optional and may be set to NULL. */ |
| 396 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, |
| 397 | const char **throttling_group, ThrottleConfig *throttle_cfg, |
| 398 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) |
| 399 | { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 400 | Error *local_error = NULL; |
| 401 | const char *aio; |
| 402 | |
| 403 | if (bdrv_flags) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 404 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
| 405 | *bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 406 | } |
| 407 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 408 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
Aarushi Mehta | f80f267 | 2020-01-20 14:18:50 +0000 | [diff] [blame] | 409 | if (bdrv_parse_aio(aio, bdrv_flags) < 0) { |
| 410 | error_setg(errp, "invalid aio option"); |
| 411 | return; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 412 | } |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | /* disk I/O throttling */ |
| 417 | if (throttling_group) { |
| 418 | *throttling_group = qemu_opt_get(opts, "throttling.group"); |
| 419 | } |
| 420 | |
| 421 | if (throttle_cfg) { |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 422 | throttle_config_init(throttle_cfg); |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 423 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
| 424 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
| 425 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = |
| 426 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
| 427 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = |
| 428 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
| 429 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = |
| 430 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
| 431 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = |
| 432 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
| 433 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = |
| 434 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
| 435 | |
| 436 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = |
| 437 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 438 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = |
| 439 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 440 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = |
| 441 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 442 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = |
| 443 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 444 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = |
| 445 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 446 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = |
| 447 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
| 448 | |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 449 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
| 450 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); |
| 451 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = |
| 452 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); |
| 453 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = |
| 454 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); |
| 455 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = |
| 456 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); |
| 457 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = |
| 458 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); |
| 459 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = |
| 460 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); |
| 461 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 462 | throttle_cfg->op_size = |
| 463 | qemu_opt_get_number(opts, "throttling.iops-size", 0); |
| 464 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 465 | if (!throttle_is_valid(throttle_cfg, errp)) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 466 | return; |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | if (detect_zeroes) { |
| 471 | *detect_zeroes = |
Marc-André Lureau | f7abe0e | 2017-08-24 10:46:10 +0200 | [diff] [blame] | 472 | qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 473 | qemu_opt_get(opts, "detect-zeroes"), |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 474 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 475 | &local_error); |
| 476 | if (local_error) { |
| 477 | error_propagate(errp, local_error); |
| 478 | return; |
| 479 | } |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 480 | } |
| 481 | } |
| 482 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 483 | /* Takes the ownership of bs_opts */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 484 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
| 485 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 486 | { |
| 487 | const char *buf; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 488 | int bdrv_flags = 0; |
| 489 | int on_read_error, on_write_error; |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 490 | bool account_invalid, account_failed; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 491 | bool writethrough, read_only; |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 492 | BlockBackend *blk; |
Markus Armbruster | a0f1eab | 2014-09-12 21:26:21 +0200 | [diff] [blame] | 493 | BlockDriverState *bs; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 494 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 495 | int snapshot = 0; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 496 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 497 | QemuOpts *opts; |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 498 | QDict *interval_dict = NULL; |
| 499 | QList *interval_list = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 500 | const char *id; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 501 | BlockdevDetectZeroesOptions detect_zeroes = |
| 502 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; |
| 503 | const char *throttling_group = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 504 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 505 | /* Check common options by copying from bs_opts to opts, all other options |
| 506 | * stay in bs_opts for processing by bdrv_open(). */ |
| 507 | id = qdict_get_try_str(bs_opts, "id"); |
Markus Armbruster | c6ecec4 | 2020-07-07 18:05:35 +0200 | [diff] [blame] | 508 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, errp); |
| 509 | if (!opts) { |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 510 | goto err_no_opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 511 | } |
| 512 | |
Markus Armbruster | 668f62e | 2020-07-07 18:06:02 +0200 | [diff] [blame] | 513 | if (!qemu_opts_absorb_qdict(opts, bs_opts, errp)) { |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 514 | goto early_err; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 515 | } |
| 516 | |
| 517 | if (id) { |
| 518 | qdict_del(bs_opts, "id"); |
| 519 | } |
| 520 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 521 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 522 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 523 | |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 524 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
| 525 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); |
| 526 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 527 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
| 528 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 529 | id = qemu_opts_id(opts); |
| 530 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 531 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
| 532 | qdict_array_split(interval_dict, &interval_list); |
| 533 | |
| 534 | if (qdict_size(interval_dict) != 0) { |
| 535 | error_setg(errp, "Invalid option stats-intervals.%s", |
| 536 | qdict_first(interval_dict)->key); |
| 537 | goto early_err; |
| 538 | } |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 539 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 540 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
| 541 | &detect_zeroes, &error); |
| 542 | if (error) { |
| 543 | error_propagate(errp, error); |
| 544 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 545 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 546 | |
| 547 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 548 | if (is_help_option(buf)) { |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 549 | qemu_printf("Supported formats:"); |
Andrey Shinkevich | 9ac404c | 2019-03-07 16:33:58 +0300 | [diff] [blame] | 550 | bdrv_iterate_format(bdrv_format_print, NULL, false); |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 551 | qemu_printf("\nSupported formats (read-only):"); |
Andrey Shinkevich | 9ac404c | 2019-03-07 16:33:58 +0300 | [diff] [blame] | 552 | bdrv_iterate_format(bdrv_format_print, NULL, true); |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 553 | qemu_printf("\n"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 554 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 555 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 556 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 557 | if (qdict_haskey(bs_opts, "driver")) { |
| 558 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 559 | goto early_err; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 560 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 561 | qdict_put_str(bs_opts, "driver", buf); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 562 | } |
| 563 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 564 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 565 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 566 | on_write_error = parse_block_error_action(buf, 0, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 567 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 568 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 569 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 570 | } |
| 571 | } |
| 572 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 573 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 574 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 575 | on_read_error = parse_block_error_action(buf, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 576 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 577 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 578 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 579 | } |
| 580 | } |
| 581 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 582 | if (snapshot) { |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 583 | bdrv_flags |= BDRV_O_SNAPSHOT; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 584 | } |
| 585 | |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 586 | read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false); |
| 587 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 588 | /* init */ |
Kevin Wolf | 39c4ae9 | 2015-11-13 14:45:42 +0100 | [diff] [blame] | 589 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 590 | BlockBackendRootState *blk_rs; |
| 591 | |
Kevin Wolf | d861ab3 | 2019-04-25 14:25:10 +0200 | [diff] [blame] | 592 | blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 593 | blk_rs = blk_get_root_state(blk); |
| 594 | blk_rs->open_flags = bdrv_flags; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 595 | blk_rs->read_only = read_only; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 596 | blk_rs->detect_zeroes = detect_zeroes; |
| 597 | |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 598 | qobject_unref(bs_opts); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 599 | } else { |
| 600 | if (file && !*file) { |
| 601 | file = NULL; |
| 602 | } |
| 603 | |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 604 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 605 | * with other callers) rather than what we want as the real defaults. |
| 606 | * Apply the defaults here instead. */ |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 607 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 608 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 609 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, |
| 610 | read_only ? "on" : "off"); |
Kevin Wolf | 9384a44 | 2018-10-17 18:24:30 +0200 | [diff] [blame] | 611 | qdict_set_default_str(bs_opts, BDRV_OPT_AUTO_READ_ONLY, "on"); |
Kevin Wolf | 72e775c | 2016-03-15 14:34:37 +0100 | [diff] [blame] | 612 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 613 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 614 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 615 | bdrv_flags |= BDRV_O_INACTIVE; |
| 616 | } |
| 617 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 618 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 619 | if (!blk) { |
| 620 | goto err_no_bs_opts; |
| 621 | } |
| 622 | bs = blk_bs(blk); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 623 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 624 | bs->detect_zeroes = detect_zeroes; |
| 625 | |
Paolo Bonzini | 9caa6f3 | 2017-06-05 14:39:07 +0200 | [diff] [blame] | 626 | block_acct_setup(blk_get_stats(blk), account_invalid, account_failed); |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 627 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 628 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
| 629 | blk_unref(blk); |
| 630 | blk = NULL; |
| 631 | goto err_no_bs_opts; |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 632 | } |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 633 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 634 | |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 635 | /* disk I/O throttling */ |
| 636 | if (throttle_enabled(&cfg)) { |
| 637 | if (!throttling_group) { |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 638 | throttling_group = id; |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 639 | } |
| 640 | blk_io_limits_enable(blk, throttling_group); |
| 641 | blk_set_io_limits(blk, &cfg); |
| 642 | } |
| 643 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 644 | blk_set_enable_write_cache(blk, !writethrough); |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 645 | blk_set_on_error(blk, on_read_error, on_write_error); |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 646 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 647 | if (!monitor_add_blk(blk, id, errp)) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 648 | blk_unref(blk); |
| 649 | blk = NULL; |
| 650 | goto err_no_bs_opts; |
| 651 | } |
| 652 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 653 | err_no_bs_opts: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 654 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 655 | qobject_unref(interval_dict); |
| 656 | qobject_unref(interval_list); |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 657 | return blk; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 658 | |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 659 | early_err: |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 660 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 661 | qobject_unref(interval_dict); |
| 662 | qobject_unref(interval_list); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 663 | err_no_opts: |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 664 | qobject_unref(bs_opts); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 665 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 666 | } |
| 667 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 668 | /* Takes the ownership of bs_opts */ |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 669 | BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 670 | { |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 671 | int bdrv_flags = 0; |
| 672 | |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 673 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 674 | * with other callers) rather than what we want as the real defaults. |
| 675 | * Apply the defaults here instead. */ |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 676 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 677 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 678 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off"); |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 679 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 680 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 681 | bdrv_flags |= BDRV_O_INACTIVE; |
| 682 | } |
| 683 | |
Kevin Wolf | 74e1ae7 | 2016-09-20 20:48:52 +0200 | [diff] [blame] | 684 | return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 685 | } |
| 686 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 687 | void blockdev_close_all_bdrv_states(void) |
| 688 | { |
| 689 | BlockDriverState *bs, *next_bs; |
| 690 | |
| 691 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { |
| 692 | AioContext *ctx = bdrv_get_aio_context(bs); |
| 693 | |
| 694 | aio_context_acquire(ctx); |
| 695 | bdrv_unref(bs); |
| 696 | aio_context_release(ctx); |
| 697 | } |
| 698 | } |
| 699 | |
Max Reitz | 262b4e8 | 2016-03-16 19:54:41 +0100 | [diff] [blame] | 700 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
| 701 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) |
| 702 | { |
| 703 | return bs ? QTAILQ_NEXT(bs, monitor_list) |
| 704 | : QTAILQ_FIRST(&monitor_bdrv_states); |
| 705 | } |
| 706 | |
Markus Armbruster | c75d7f7 | 2020-07-07 18:05:41 +0200 | [diff] [blame] | 707 | static bool qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 708 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 709 | { |
| 710 | const char *value; |
| 711 | |
| 712 | value = qemu_opt_get(opts, from); |
| 713 | if (value) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 714 | if (qemu_opt_find(opts, to)) { |
| 715 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " |
| 716 | "same time", to, from); |
Markus Armbruster | c75d7f7 | 2020-07-07 18:05:41 +0200 | [diff] [blame] | 717 | return false; |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 718 | } |
Jun Li | 20d6cd4 | 2014-09-24 13:45:27 +0800 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | /* rename all items in opts */ |
| 722 | while ((value = qemu_opt_get(opts, from))) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 723 | qemu_opt_set(opts, to, value, &error_abort); |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 724 | qemu_opt_unset(opts, from); |
| 725 | } |
Markus Armbruster | c75d7f7 | 2020-07-07 18:05:41 +0200 | [diff] [blame] | 726 | return true; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 727 | } |
| 728 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 729 | QemuOptsList qemu_legacy_drive_opts = { |
| 730 | .name = "drive", |
| 731 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 732 | .desc = { |
| 733 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 734 | .name = "bus", |
| 735 | .type = QEMU_OPT_NUMBER, |
| 736 | .help = "bus number", |
| 737 | },{ |
| 738 | .name = "unit", |
| 739 | .type = QEMU_OPT_NUMBER, |
| 740 | .help = "unit number (i.e. lun for scsi)", |
| 741 | },{ |
| 742 | .name = "index", |
| 743 | .type = QEMU_OPT_NUMBER, |
| 744 | .help = "index number", |
| 745 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 746 | .name = "media", |
| 747 | .type = QEMU_OPT_STRING, |
| 748 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 749 | },{ |
| 750 | .name = "if", |
| 751 | .type = QEMU_OPT_STRING, |
| 752 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 753 | },{ |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 754 | .name = "file", |
| 755 | .type = QEMU_OPT_STRING, |
| 756 | .help = "file name", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 757 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 758 | |
| 759 | /* Options that are passed on, but have special semantics with -drive */ |
| 760 | { |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 761 | .name = BDRV_OPT_READ_ONLY, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 762 | .type = QEMU_OPT_BOOL, |
| 763 | .help = "open drive file as read-only", |
| 764 | },{ |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 765 | .name = "rerror", |
| 766 | .type = QEMU_OPT_STRING, |
| 767 | .help = "read error action", |
| 768 | },{ |
| 769 | .name = "werror", |
| 770 | .type = QEMU_OPT_STRING, |
| 771 | .help = "write error action", |
| 772 | },{ |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 773 | .name = "copy-on-read", |
| 774 | .type = QEMU_OPT_BOOL, |
| 775 | .help = "copy read data from backing file into image file", |
| 776 | }, |
| 777 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 778 | { /* end of list */ } |
| 779 | }, |
| 780 | }; |
| 781 | |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 782 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type, |
| 783 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 784 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 785 | const char *value; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 786 | BlockBackend *blk; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 787 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 788 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 789 | QemuOpts *legacy_opts; |
| 790 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 791 | BlockInterfaceType type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 792 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 793 | const char *werror, *rerror; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 794 | bool read_only = false; |
| 795 | bool copy_on_read; |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 796 | const char *filename; |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 797 | int i; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 798 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 799 | /* Change legacy command line options into QMP ones */ |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 800 | static const struct { |
| 801 | const char *from; |
| 802 | const char *to; |
| 803 | } opt_renames[] = { |
| 804 | { "iops", "throttling.iops-total" }, |
| 805 | { "iops_rd", "throttling.iops-read" }, |
| 806 | { "iops_wr", "throttling.iops-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 807 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 808 | { "bps", "throttling.bps-total" }, |
| 809 | { "bps_rd", "throttling.bps-read" }, |
| 810 | { "bps_wr", "throttling.bps-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 811 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 812 | { "iops_max", "throttling.iops-total-max" }, |
| 813 | { "iops_rd_max", "throttling.iops-read-max" }, |
| 814 | { "iops_wr_max", "throttling.iops-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 815 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 816 | { "bps_max", "throttling.bps-total-max" }, |
| 817 | { "bps_rd_max", "throttling.bps-read-max" }, |
| 818 | { "bps_wr_max", "throttling.bps-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 819 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 820 | { "iops_size", "throttling.iops-size" }, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 821 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 822 | { "group", "throttling.group" }, |
| 823 | |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 824 | { "readonly", BDRV_OPT_READ_ONLY }, |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 825 | }; |
| 826 | |
| 827 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { |
Markus Armbruster | 235e59c | 2020-07-07 18:05:42 +0200 | [diff] [blame] | 828 | if (!qemu_opt_rename(all_opts, opt_renames[i].from, |
Markus Armbruster | 668f62e | 2020-07-07 18:06:02 +0200 | [diff] [blame] | 829 | opt_renames[i].to, errp)) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 830 | return NULL; |
| 831 | } |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 832 | } |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 833 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 834 | value = qemu_opt_get(all_opts, "cache"); |
| 835 | if (value) { |
| 836 | int flags = 0; |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 837 | bool writethrough; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 838 | |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 839 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 840 | error_setg(errp, "invalid cache option"); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 841 | return NULL; |
| 842 | } |
| 843 | |
| 844 | /* Specific options take precedence */ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 845 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
| 846 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 847 | !writethrough, &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 848 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 849 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
| 850 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 851 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 852 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 853 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
| 854 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 855 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 856 | } |
| 857 | qemu_opt_unset(all_opts, "cache"); |
| 858 | } |
| 859 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 860 | /* Get a QDict for processing the options */ |
| 861 | bs_opts = qdict_new(); |
| 862 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 863 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 864 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
| 865 | &error_abort); |
Markus Armbruster | af175e8 | 2020-07-07 18:06:03 +0200 | [diff] [blame] | 866 | if (!qemu_opts_absorb_qdict(legacy_opts, bs_opts, errp)) { |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 867 | goto fail; |
| 868 | } |
| 869 | |
| 870 | /* Media type */ |
| 871 | value = qemu_opt_get(legacy_opts, "media"); |
| 872 | if (value) { |
| 873 | if (!strcmp(value, "disk")) { |
| 874 | media = MEDIA_DISK; |
| 875 | } else if (!strcmp(value, "cdrom")) { |
| 876 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 877 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 878 | } else { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 879 | error_setg(errp, "'%s' invalid media", value); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 880 | goto fail; |
| 881 | } |
| 882 | } |
| 883 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 884 | /* copy-on-read is disabled with a warning for read-only devices */ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 885 | 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] | 886 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 887 | |
| 888 | if (read_only && copy_on_read) { |
Alistair Francis | 3dc6f86 | 2017-07-12 06:57:41 -0700 | [diff] [blame] | 889 | warn_report("disabling copy-on-read on read-only drive"); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 890 | copy_on_read = false; |
| 891 | } |
| 892 | |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 893 | qdict_put_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); |
| 894 | 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] | 895 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 896 | /* Controller type */ |
| 897 | value = qemu_opt_get(legacy_opts, "if"); |
| 898 | if (value) { |
| 899 | for (type = 0; |
| 900 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 901 | type++) { |
| 902 | } |
| 903 | if (type == IF_COUNT) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 904 | error_setg(errp, "unsupported bus type '%s'", value); |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 905 | goto fail; |
| 906 | } |
| 907 | } else { |
| 908 | type = block_default_type; |
| 909 | } |
| 910 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 911 | /* Device address specified by bus/unit or index. |
| 912 | * If none was specified, try to find the first free one. */ |
| 913 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 914 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 915 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 916 | |
| 917 | max_devs = if_max_devs[type]; |
| 918 | |
| 919 | if (index != -1) { |
| 920 | if (bus_id != 0 || unit_id != -1) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 921 | error_setg(errp, "index cannot be used with bus and unit"); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 922 | goto fail; |
| 923 | } |
| 924 | bus_id = drive_index_to_bus_id(type, index); |
| 925 | unit_id = drive_index_to_unit_id(type, index); |
| 926 | } |
| 927 | |
| 928 | if (unit_id == -1) { |
| 929 | unit_id = 0; |
| 930 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 931 | unit_id++; |
| 932 | if (max_devs && unit_id >= max_devs) { |
| 933 | unit_id -= max_devs; |
| 934 | bus_id++; |
| 935 | } |
| 936 | } |
| 937 | } |
| 938 | |
| 939 | if (max_devs && unit_id >= max_devs) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 940 | 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] | 941 | goto fail; |
| 942 | } |
| 943 | |
| 944 | if (drive_get(type, bus_id, unit_id) != NULL) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 945 | error_setg(errp, "drive with bus=%d, unit=%d (index=%d) exists", |
| 946 | bus_id, unit_id, index); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 947 | goto fail; |
| 948 | } |
| 949 | |
| 950 | /* no id supplied -> create one */ |
| 951 | if (qemu_opts_id(all_opts) == NULL) { |
| 952 | char *new_id; |
| 953 | const char *mediastr = ""; |
| 954 | if (type == IF_IDE || type == IF_SCSI) { |
| 955 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 956 | } |
| 957 | if (max_devs) { |
| 958 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 959 | mediastr, unit_id); |
| 960 | } else { |
| 961 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 962 | mediastr, unit_id); |
| 963 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 964 | qdict_put_str(bs_opts, "id", new_id); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 965 | g_free(new_id); |
| 966 | } |
| 967 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 968 | /* Add virtio block device */ |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 969 | if (type == IF_VIRTIO) { |
| 970 | QemuOpts *devopts; |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 971 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 972 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 973 | if (arch_type == QEMU_ARCH_S390X) { |
Alexander Graf | 1f68f1d | 2015-06-16 23:06:33 +0200 | [diff] [blame] | 974 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 975 | } else { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 976 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 977 | } |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 978 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 979 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 980 | } |
| 981 | |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 982 | filename = qemu_opt_get(legacy_opts, "file"); |
| 983 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 984 | /* Check werror/rerror compatibility with if=... */ |
| 985 | werror = qemu_opt_get(legacy_opts, "werror"); |
| 986 | if (werror != NULL) { |
| 987 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && |
| 988 | type != IF_NONE) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 989 | error_setg(errp, "werror is not supported by this bus type"); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 990 | goto fail; |
| 991 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 992 | qdict_put_str(bs_opts, "werror", werror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 993 | } |
| 994 | |
| 995 | rerror = qemu_opt_get(legacy_opts, "rerror"); |
| 996 | if (rerror != NULL) { |
| 997 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && |
| 998 | type != IF_NONE) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 999 | error_setg(errp, "rerror is not supported by this bus type"); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1000 | goto fail; |
| 1001 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1002 | qdict_put_str(bs_opts, "rerror", rerror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1003 | } |
| 1004 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1005 | /* Actual block device init: Functionality shared with blockdev-add */ |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 1006 | blk = blockdev_init(filename, bs_opts, errp); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1007 | bs_opts = NULL; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1008 | if (!blk) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1009 | goto fail; |
| 1010 | } |
| 1011 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1012 | /* Create legacy DriveInfo */ |
| 1013 | dinfo = g_malloc0(sizeof(*dinfo)); |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 1014 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1015 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1016 | dinfo->type = type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1017 | dinfo->bus = bus_id; |
| 1018 | dinfo->unit = unit_id; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1019 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1020 | blk_set_legacy_dinfo(blk, dinfo); |
| 1021 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 1022 | switch(type) { |
| 1023 | case IF_IDE: |
| 1024 | case IF_SCSI: |
| 1025 | case IF_XEN: |
| 1026 | case IF_NONE: |
| 1027 | dinfo->media_cd = media == MEDIA_CDROM; |
| 1028 | break; |
| 1029 | default: |
| 1030 | break; |
| 1031 | } |
| 1032 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1033 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 1034 | qemu_opts_del(legacy_opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 1035 | qobject_unref(bs_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1036 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 1037 | } |
| 1038 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1039 | static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) |
| 1040 | { |
| 1041 | BlockDriverState *bs; |
| 1042 | |
| 1043 | bs = bdrv_lookup_bs(name, name, errp); |
| 1044 | if (bs == NULL) { |
| 1045 | return NULL; |
| 1046 | } |
| 1047 | |
| 1048 | if (!bdrv_is_root_node(bs)) { |
| 1049 | error_setg(errp, "Need a root block node"); |
| 1050 | return NULL; |
| 1051 | } |
| 1052 | |
| 1053 | if (!bdrv_is_inserted(bs)) { |
| 1054 | error_setg(errp, "Device has no medium"); |
| 1055 | return NULL; |
| 1056 | } |
| 1057 | |
| 1058 | return bs; |
| 1059 | } |
| 1060 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1061 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1062 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1063 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1064 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1065 | list.value = action; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1066 | list.next = NULL; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1067 | qmp_transaction(&list, false, NULL, errp); |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1068 | } |
| 1069 | |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1070 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
| 1071 | bool has_node_name, const char *node_name, |
| 1072 | const char *snapshot_file, |
| 1073 | bool has_snapshot_node_name, |
| 1074 | const char *snapshot_node_name, |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 1075 | bool has_format, const char *format, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1076 | bool has_mode, NewImageMode mode, Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1077 | { |
Alberto Garcia | a911e6a | 2015-10-26 14:27:14 +0200 | [diff] [blame] | 1078 | BlockdevSnapshotSync snapshot = { |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1079 | .has_device = has_device, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1080 | .device = (char *) device, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1081 | .has_node_name = has_node_name, |
| 1082 | .node_name = (char *) node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1083 | .snapshot_file = (char *) snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1084 | .has_snapshot_node_name = has_snapshot_node_name, |
| 1085 | .snapshot_node_name = (char *) snapshot_node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1086 | .has_format = has_format, |
| 1087 | .format = (char *) format, |
| 1088 | .has_mode = has_mode, |
| 1089 | .mode = mode, |
| 1090 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1091 | TransactionAction action = { |
| 1092 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1093 | .u.blockdev_snapshot_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1094 | }; |
| 1095 | blockdev_do_action(&action, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1096 | } |
| 1097 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1098 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
| 1099 | Error **errp) |
| 1100 | { |
| 1101 | BlockdevSnapshot snapshot_data = { |
| 1102 | .node = (char *) node, |
| 1103 | .overlay = (char *) overlay |
| 1104 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1105 | TransactionAction action = { |
| 1106 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1107 | .u.blockdev_snapshot.data = &snapshot_data, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1108 | }; |
| 1109 | blockdev_do_action(&action, errp); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1110 | } |
| 1111 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1112 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 1113 | const char *name, |
| 1114 | Error **errp) |
| 1115 | { |
| 1116 | BlockdevSnapshotInternal snapshot = { |
| 1117 | .device = (char *) device, |
| 1118 | .name = (char *) name |
| 1119 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1120 | TransactionAction action = { |
| 1121 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1122 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1123 | }; |
| 1124 | blockdev_do_action(&action, errp); |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1125 | } |
| 1126 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1127 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
| 1128 | bool has_id, |
| 1129 | const char *id, |
| 1130 | bool has_name, |
| 1131 | const char *name, |
| 1132 | Error **errp) |
| 1133 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1134 | BlockDriverState *bs; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1135 | AioContext *aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1136 | QEMUSnapshotInfo sn; |
| 1137 | Error *local_err = NULL; |
| 1138 | SnapshotInfo *info = NULL; |
| 1139 | int ret; |
| 1140 | |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1141 | bs = qmp_get_root_bs(device, errp); |
| 1142 | if (!bs) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1143 | return NULL; |
| 1144 | } |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1145 | aio_context = bdrv_get_aio_context(bs); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1146 | aio_context_acquire(aio_context); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1147 | |
| 1148 | if (!has_id) { |
| 1149 | id = NULL; |
| 1150 | } |
| 1151 | |
| 1152 | if (!has_name) { |
| 1153 | name = NULL; |
| 1154 | } |
| 1155 | |
| 1156 | if (!id && !name) { |
| 1157 | error_setg(errp, "Name or id must be provided"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1158 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1159 | } |
| 1160 | |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1161 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
| 1162 | goto out_aio_context; |
| 1163 | } |
| 1164 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1165 | 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] | 1166 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1167 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1168 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1169 | } |
| 1170 | if (!ret) { |
| 1171 | error_setg(errp, |
| 1172 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1173 | "device '%s'", |
| 1174 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1175 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1176 | } |
| 1177 | |
| 1178 | bdrv_snapshot_delete(bs, id, name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1179 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1180 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1181 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1182 | } |
| 1183 | |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1184 | aio_context_release(aio_context); |
| 1185 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 1186 | info = g_new0(SnapshotInfo, 1); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1187 | info->id = g_strdup(sn.id_str); |
| 1188 | info->name = g_strdup(sn.name); |
| 1189 | info->date_nsec = sn.date_nsec; |
| 1190 | info->date_sec = sn.date_sec; |
| 1191 | info->vm_state_size = sn.vm_state_size; |
| 1192 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1193 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
Pavel Dovgalyuk | b39847a | 2020-10-03 20:13:08 +0300 | [diff] [blame] | 1194 | if (sn.icount != -1ULL) { |
| 1195 | info->icount = sn.icount; |
| 1196 | info->has_icount = true; |
| 1197 | } |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1198 | |
| 1199 | return info; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1200 | |
| 1201 | out_aio_context: |
| 1202 | aio_context_release(aio_context); |
| 1203 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1204 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1205 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1206 | /* New and old BlockDriverState structs for atomic group operations */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1207 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1208 | typedef struct BlkActionState BlkActionState; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1209 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1210 | /** |
| 1211 | * BlkActionOps: |
| 1212 | * Table of operations that define an Action. |
| 1213 | * |
| 1214 | * @instance_size: Size of state struct, in bytes. |
| 1215 | * @prepare: Prepare the work, must NOT be NULL. |
| 1216 | * @commit: Commit the changes, can be NULL. |
| 1217 | * @abort: Abort the changes on fail, can be NULL. |
| 1218 | * @clean: Clean up resources after all transaction actions have called |
| 1219 | * commit() or abort(). Can be NULL. |
| 1220 | * |
| 1221 | * Only prepare() may fail. In a single transaction, only one of commit() or |
| 1222 | * 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] | 1223 | */ |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1224 | typedef struct BlkActionOps { |
| 1225 | size_t instance_size; |
| 1226 | void (*prepare)(BlkActionState *common, Error **errp); |
| 1227 | void (*commit)(BlkActionState *common); |
| 1228 | void (*abort)(BlkActionState *common); |
| 1229 | void (*clean)(BlkActionState *common); |
| 1230 | } BlkActionOps; |
| 1231 | |
| 1232 | /** |
| 1233 | * BlkActionState: |
| 1234 | * Describes one Action's state within a Transaction. |
| 1235 | * |
| 1236 | * @action: QAPI-defined enum identifying which Action to perform. |
| 1237 | * @ops: Table of ActionOps this Action can perform. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1238 | * @block_job_txn: Transaction which this action belongs to. |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1239 | * @entry: List membership for all Actions in this Transaction. |
| 1240 | * |
| 1241 | * This structure must be arranged as first member in a subclassed type, |
| 1242 | * assuming that the compiler will also arrange it to the same offsets as the |
| 1243 | * base class. |
| 1244 | */ |
| 1245 | struct BlkActionState { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1246 | TransactionAction *action; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1247 | const BlkActionOps *ops; |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 1248 | JobTxn *block_job_txn; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1249 | TransactionProperties *txn_props; |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 1250 | QTAILQ_ENTRY(BlkActionState) entry; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1251 | }; |
| 1252 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1253 | /* internal snapshot private data */ |
| 1254 | typedef struct InternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1255 | BlkActionState common; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1256 | BlockDriverState *bs; |
| 1257 | QEMUSnapshotInfo sn; |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1258 | bool created; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1259 | } InternalSnapshotState; |
| 1260 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1261 | |
| 1262 | static int action_check_completion_mode(BlkActionState *s, Error **errp) |
| 1263 | { |
| 1264 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 1265 | error_setg(errp, |
| 1266 | "Action '%s' does not support Transaction property " |
| 1267 | "completion-mode = %s", |
Markus Armbruster | 977c736 | 2017-08-24 10:46:08 +0200 | [diff] [blame] | 1268 | TransactionActionKind_str(s->action->type), |
| 1269 | ActionCompletionMode_str(s->txn_props->completion_mode)); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1270 | return -1; |
| 1271 | } |
| 1272 | return 0; |
| 1273 | } |
| 1274 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1275 | static void internal_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1276 | Error **errp) |
| 1277 | { |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1278 | Error *local_err = NULL; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1279 | const char *device; |
| 1280 | const char *name; |
| 1281 | BlockDriverState *bs; |
| 1282 | QEMUSnapshotInfo old_sn, *sn; |
| 1283 | bool ret; |
| 1284 | qemu_timeval tv; |
| 1285 | BlockdevSnapshotInternal *internal; |
| 1286 | InternalSnapshotState *state; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1287 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1288 | int ret1; |
| 1289 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1290 | g_assert(common->action->type == |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1291 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1292 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1293 | state = DO_UPCAST(InternalSnapshotState, common, common); |
| 1294 | |
| 1295 | /* 1. parse input */ |
| 1296 | device = internal->device; |
| 1297 | name = internal->name; |
| 1298 | |
| 1299 | /* 2. check for validation */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1300 | if (action_check_completion_mode(common, errp) < 0) { |
| 1301 | return; |
| 1302 | } |
| 1303 | |
Kevin Wolf | 75dfd40 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1304 | bs = qmp_get_root_bs(device, errp); |
| 1305 | if (!bs) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1306 | return; |
| 1307 | } |
| 1308 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1309 | aio_context = bdrv_get_aio_context(bs); |
| 1310 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1311 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1312 | state->bs = bs; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1313 | |
| 1314 | /* Paired with .clean() */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1315 | bdrv_drained_begin(bs); |
| 1316 | |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1317 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1318 | goto out; |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1319 | } |
| 1320 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1321 | if (bdrv_is_read_only(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1322 | error_setg(errp, "Device '%s' is read only", device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1323 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1324 | } |
| 1325 | |
| 1326 | if (!bdrv_can_snapshot(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1327 | error_setg(errp, "Block format '%s' used by device '%s' " |
| 1328 | "does not support internal snapshots", |
| 1329 | bs->drv->format_name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1330 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1331 | } |
| 1332 | |
| 1333 | if (!strlen(name)) { |
| 1334 | error_setg(errp, "Name is empty"); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1335 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1336 | } |
| 1337 | |
| 1338 | /* check whether a snapshot with name exist */ |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1339 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
| 1340 | &local_err); |
| 1341 | if (local_err) { |
| 1342 | error_propagate(errp, local_err); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1343 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1344 | } else if (ret) { |
| 1345 | error_setg(errp, |
| 1346 | "Snapshot with name '%s' already exists on device '%s'", |
| 1347 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1348 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1349 | } |
| 1350 | |
| 1351 | /* 3. take the snapshot */ |
| 1352 | sn = &state->sn; |
| 1353 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1354 | qemu_gettimeofday(&tv); |
| 1355 | sn->date_sec = tv.tv_sec; |
| 1356 | sn->date_nsec = tv.tv_usec * 1000; |
| 1357 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
Pavel Dovgalyuk | b39847a | 2020-10-03 20:13:08 +0300 | [diff] [blame] | 1358 | if (replay_mode != REPLAY_MODE_NONE) { |
| 1359 | sn->icount = replay_get_current_icount(); |
| 1360 | } else { |
| 1361 | sn->icount = -1ULL; |
| 1362 | } |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1363 | |
| 1364 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1365 | if (ret1 < 0) { |
| 1366 | error_setg_errno(errp, -ret1, |
| 1367 | "Failed to create snapshot '%s' on device '%s'", |
| 1368 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1369 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1370 | } |
| 1371 | |
| 1372 | /* 4. succeed, mark a snapshot is created */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1373 | state->created = true; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1374 | |
| 1375 | out: |
| 1376 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1377 | } |
| 1378 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1379 | static void internal_snapshot_abort(BlkActionState *common) |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1380 | { |
| 1381 | InternalSnapshotState *state = |
| 1382 | DO_UPCAST(InternalSnapshotState, common, common); |
| 1383 | BlockDriverState *bs = state->bs; |
| 1384 | QEMUSnapshotInfo *sn = &state->sn; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1385 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1386 | Error *local_error = NULL; |
| 1387 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1388 | if (!state->created) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1389 | return; |
| 1390 | } |
| 1391 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1392 | aio_context = bdrv_get_aio_context(state->bs); |
| 1393 | aio_context_acquire(aio_context); |
| 1394 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1395 | 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] | 1396 | error_reportf_err(local_error, |
| 1397 | "Failed to delete snapshot with id '%s' and " |
| 1398 | "name '%s' on device '%s' in abort: ", |
| 1399 | sn->id_str, sn->name, |
| 1400 | bdrv_get_device_name(bs)); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1401 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1402 | |
| 1403 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1404 | } |
| 1405 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1406 | static void internal_snapshot_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1407 | { |
| 1408 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, |
| 1409 | common, common); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1410 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1411 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1412 | if (!state->bs) { |
| 1413 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1414 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1415 | |
| 1416 | aio_context = bdrv_get_aio_context(state->bs); |
| 1417 | aio_context_acquire(aio_context); |
| 1418 | |
| 1419 | bdrv_drained_end(state->bs); |
| 1420 | |
| 1421 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1422 | } |
| 1423 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1424 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1425 | typedef struct ExternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1426 | BlkActionState common; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1427 | BlockDriverState *old_bs; |
| 1428 | BlockDriverState *new_bs; |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1429 | bool overlay_appended; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1430 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1431 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1432 | static void external_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1433 | Error **errp) |
| 1434 | { |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1435 | int flags = 0; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1436 | QDict *options = NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1437 | Error *local_err = NULL; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1438 | /* Device and node name of the image to generate the snapshot from */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1439 | const char *device; |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1440 | const char *node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1441 | /* Reference to the new image (for 'blockdev-snapshot') */ |
| 1442 | const char *snapshot_ref; |
| 1443 | /* File name of the new image (for 'blockdev-snapshot-sync') */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1444 | const char *new_image_file; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1445 | ExternalSnapshotState *state = |
| 1446 | DO_UPCAST(ExternalSnapshotState, common, common); |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1447 | TransactionAction *action = common->action; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1448 | AioContext *aio_context; |
Kevin Wolf | d29d3d1 | 2020-03-10 12:38:26 +0100 | [diff] [blame] | 1449 | uint64_t perm, shared; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1450 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1451 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
| 1452 | * purpose but a different set of parameters */ |
| 1453 | switch (action->type) { |
| 1454 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 1455 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1456 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1457 | device = s->node; |
| 1458 | node_name = s->node; |
| 1459 | new_image_file = NULL; |
| 1460 | snapshot_ref = s->overlay; |
| 1461 | } |
| 1462 | break; |
| 1463 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 1464 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1465 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1466 | device = s->has_device ? s->device : NULL; |
| 1467 | node_name = s->has_node_name ? s->node_name : NULL; |
| 1468 | new_image_file = s->snapshot_file; |
| 1469 | snapshot_ref = NULL; |
| 1470 | } |
| 1471 | break; |
| 1472 | default: |
| 1473 | g_assert_not_reached(); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1474 | } |
| 1475 | |
| 1476 | /* start processing */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1477 | if (action_check_completion_mode(common, errp) < 0) { |
| 1478 | return; |
| 1479 | } |
| 1480 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1481 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
| 1482 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1483 | return; |
| 1484 | } |
| 1485 | |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1486 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1487 | aio_context_acquire(aio_context); |
| 1488 | |
| 1489 | /* Paired with .clean() */ |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1490 | bdrv_drained_begin(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1491 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1492 | if (!bdrv_is_inserted(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1493 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1494 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1495 | } |
| 1496 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 1497 | if (bdrv_op_is_blocked(state->old_bs, |
| 1498 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1499 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1500 | } |
| 1501 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1502 | if (!bdrv_is_read_only(state->old_bs)) { |
| 1503 | if (bdrv_flush(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1504 | error_setg(errp, QERR_IO_ERROR); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1505 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1506 | } |
| 1507 | } |
| 1508 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1509 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1510 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1511 | const char *format = s->has_format ? s->format : "qcow2"; |
| 1512 | enum NewImageMode mode; |
| 1513 | const char *snapshot_node_name = |
| 1514 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1515 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1516 | if (node_name && !snapshot_node_name) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1517 | error_setg(errp, "New overlay node name missing"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1518 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1519 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1520 | |
| 1521 | if (snapshot_node_name && |
| 1522 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1523 | error_setg(errp, "New overlay node name already in use"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1524 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1525 | } |
| 1526 | |
| 1527 | flags = state->old_bs->open_flags; |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 1528 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_COPY_ON_READ); |
| 1529 | flags |= BDRV_O_NO_BACKING; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1530 | |
| 1531 | /* create new image w/backing file */ |
| 1532 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1533 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1534 | int64_t size = bdrv_getlength(state->old_bs); |
| 1535 | if (size < 0) { |
| 1536 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1537 | goto out; |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1538 | } |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 1539 | bdrv_refresh_filename(state->old_bs); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1540 | bdrv_img_create(new_image_file, format, |
| 1541 | state->old_bs->filename, |
| 1542 | state->old_bs->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 1543 | NULL, size, flags, false, &local_err); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1544 | if (local_err) { |
| 1545 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1546 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1547 | } |
| 1548 | } |
| 1549 | |
| 1550 | options = qdict_new(); |
Peter Maydell | d52e1a0 | 2018-11-01 16:30:37 +0000 | [diff] [blame] | 1551 | if (snapshot_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1552 | qdict_put_str(options, "node-name", snapshot_node_name); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1553 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1554 | qdict_put_str(options, "driver", format); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1555 | } |
| 1556 | |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1557 | state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags, |
| 1558 | errp); |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1559 | /* We will manually add the backing_hd field to the bs later */ |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1560 | if (!state->new_bs) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1561 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1562 | } |
| 1563 | |
Kevin Wolf | d29d3d1 | 2020-03-10 12:38:26 +0100 | [diff] [blame] | 1564 | /* |
| 1565 | * Allow attaching a backing file to an overlay that's already in use only |
| 1566 | * if the parents don't assume that they are already seeing a valid image. |
| 1567 | * (Specifically, allow it as a mirror target, which is write-only access.) |
| 1568 | */ |
| 1569 | bdrv_get_cumulative_perm(state->new_bs, &perm, &shared); |
| 1570 | if (perm & BLK_PERM_CONSISTENT_READ) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1571 | error_setg(errp, "The overlay is already in use"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1572 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1573 | } |
| 1574 | |
Max Reitz | 7cc734a | 2019-06-12 18:34:46 +0200 | [diff] [blame] | 1575 | if (state->new_bs->drv->is_filter) { |
| 1576 | error_setg(errp, "Filters cannot be used as overlays"); |
| 1577 | goto out; |
| 1578 | } |
| 1579 | |
| 1580 | if (bdrv_cow_child(state->new_bs)) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1581 | error_setg(errp, "The overlay already has a backing image"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1582 | goto out; |
Alberto Garcia | 08b24cf | 2015-11-03 12:32:35 +0200 | [diff] [blame] | 1583 | } |
| 1584 | |
| 1585 | if (!state->new_bs->drv->supports_backing) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1586 | error_setg(errp, "The overlay does not support backing images"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1587 | goto out; |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1588 | } |
| 1589 | |
| 1590 | /* This removes our old bs and adds the new bs. This is an operation that |
| 1591 | * can fail, so we need to do it in .prepare; undoing it for abort is |
| 1592 | * always possible. */ |
| 1593 | bdrv_ref(state->new_bs); |
| 1594 | bdrv_append(state->new_bs, state->old_bs, &local_err); |
| 1595 | if (local_err) { |
| 1596 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1597 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1598 | } |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1599 | state->overlay_appended = true; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1600 | |
| 1601 | out: |
| 1602 | aio_context_release(aio_context); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1603 | } |
| 1604 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1605 | static void external_snapshot_commit(BlkActionState *common) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1606 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1607 | ExternalSnapshotState *state = |
| 1608 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1609 | AioContext *aio_context; |
| 1610 | |
| 1611 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1612 | aio_context_acquire(aio_context); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1613 | |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1614 | /* We don't need (or want) to use the transactional |
| 1615 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1616 | * don't want to abort all of them if one of them fails the reopen */ |
Stefan Hajnoczi | d73415a | 2020-09-23 11:56:46 +0100 | [diff] [blame] | 1617 | if (!qatomic_read(&state->old_bs->copy_on_read)) { |
Alberto Garcia | 1b57774 | 2018-11-12 16:00:39 +0200 | [diff] [blame] | 1618 | bdrv_reopen_set_read_only(state->old_bs, true, NULL); |
Kevin Wolf | 4c84498 | 2016-02-29 13:12:26 +0100 | [diff] [blame] | 1619 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1620 | |
| 1621 | aio_context_release(aio_context); |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1622 | } |
| 1623 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1624 | static void external_snapshot_abort(BlkActionState *common) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1625 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1626 | ExternalSnapshotState *state = |
| 1627 | DO_UPCAST(ExternalSnapshotState, common, common); |
| 1628 | if (state->new_bs) { |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1629 | if (state->overlay_appended) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1630 | AioContext *aio_context; |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1631 | AioContext *tmp_context; |
| 1632 | int ret; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1633 | |
| 1634 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1635 | aio_context_acquire(aio_context); |
| 1636 | |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1637 | bdrv_ref(state->old_bs); /* we can't let bdrv_set_backind_hd() |
| 1638 | close state->old_bs; we need it */ |
| 1639 | bdrv_set_backing_hd(state->new_bs, NULL, &error_abort); |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1640 | |
| 1641 | /* |
| 1642 | * The call to bdrv_set_backing_hd() above returns state->old_bs to |
| 1643 | * the main AioContext. As we're still going to be using it, return |
| 1644 | * it to the AioContext it was before. |
| 1645 | */ |
| 1646 | tmp_context = bdrv_get_aio_context(state->old_bs); |
| 1647 | if (aio_context != tmp_context) { |
| 1648 | aio_context_release(aio_context); |
| 1649 | aio_context_acquire(tmp_context); |
| 1650 | |
| 1651 | ret = bdrv_try_set_aio_context(state->old_bs, |
| 1652 | aio_context, NULL); |
| 1653 | assert(ret == 0); |
| 1654 | |
| 1655 | aio_context_release(tmp_context); |
| 1656 | aio_context_acquire(aio_context); |
| 1657 | } |
| 1658 | |
Kevin Wolf | 5fe31c2 | 2017-03-06 16:20:51 +0100 | [diff] [blame] | 1659 | bdrv_replace_node(state->new_bs, state->old_bs, &error_abort); |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1660 | bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */ |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1661 | |
| 1662 | aio_context_release(aio_context); |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1663 | } |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1664 | } |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1665 | } |
| 1666 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1667 | static void external_snapshot_clean(BlkActionState *common) |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1668 | { |
| 1669 | ExternalSnapshotState *state = |
| 1670 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1671 | AioContext *aio_context; |
| 1672 | |
| 1673 | if (!state->old_bs) { |
| 1674 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1675 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1676 | |
| 1677 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1678 | aio_context_acquire(aio_context); |
| 1679 | |
| 1680 | bdrv_drained_end(state->old_bs); |
| 1681 | bdrv_unref(state->new_bs); |
| 1682 | |
| 1683 | aio_context_release(aio_context); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1684 | } |
| 1685 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1686 | typedef struct DriveBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1687 | BlkActionState common; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1688 | BlockDriverState *bs; |
| 1689 | BlockJob *job; |
| 1690 | } DriveBackupState; |
| 1691 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1692 | static BlockJob *do_backup_common(BackupCommon *backup, |
| 1693 | BlockDriverState *bs, |
| 1694 | BlockDriverState *target_bs, |
| 1695 | AioContext *aio_context, |
| 1696 | JobTxn *txn, Error **errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1697 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1698 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1699 | { |
| 1700 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1701 | DriveBackup *backup; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1702 | BlockDriverState *bs; |
| 1703 | BlockDriverState *target_bs; |
| 1704 | BlockDriverState *source = NULL; |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1705 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1706 | AioContext *old_context; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1707 | QDict *options; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1708 | Error *local_err = NULL; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1709 | int flags; |
| 1710 | int64_t size; |
| 1711 | bool set_backing_hd = false; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1712 | int ret; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1713 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1714 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1715 | backup = common->action->u.drive_backup.data; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1716 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1717 | if (!backup->has_mode) { |
| 1718 | backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1719 | } |
| 1720 | |
Vladimir Sementsov-Ogievskiy | 85c9d13 | 2019-06-18 17:08:04 +0300 | [diff] [blame] | 1721 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1722 | if (!bs) { |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1723 | return; |
| 1724 | } |
| 1725 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1726 | if (!bs->drv) { |
| 1727 | error_setg(errp, "Device has no medium"); |
| 1728 | return; |
| 1729 | } |
| 1730 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1731 | aio_context = bdrv_get_aio_context(bs); |
| 1732 | aio_context_acquire(aio_context); |
| 1733 | |
| 1734 | /* Paired with .clean() */ |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1735 | bdrv_drained_begin(bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1736 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1737 | if (!backup->has_format) { |
| 1738 | backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ? |
| 1739 | NULL : (char *) bs->drv->format_name; |
| 1740 | } |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1741 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1742 | /* Early check to avoid creating target */ |
| 1743 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
| 1744 | goto out; |
| 1745 | } |
| 1746 | |
| 1747 | flags = bs->open_flags | BDRV_O_RDWR; |
| 1748 | |
| 1749 | /* |
| 1750 | * See if we have a backing HD we can use to create our new image |
| 1751 | * on top of. |
| 1752 | */ |
| 1753 | if (backup->sync == MIRROR_SYNC_MODE_TOP) { |
Max Reitz | 2b088c6 | 2019-06-12 17:46:45 +0200 | [diff] [blame] | 1754 | /* |
| 1755 | * Backup will not replace the source by the target, so none |
| 1756 | * of the filters skipped here will be removed (in contrast to |
| 1757 | * mirror). Therefore, we can skip all of them when looking |
| 1758 | * for the first COW relationship. |
| 1759 | */ |
| 1760 | source = bdrv_cow_bs(bdrv_skip_filters(bs)); |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1761 | if (!source) { |
| 1762 | backup->sync = MIRROR_SYNC_MODE_FULL; |
| 1763 | } |
| 1764 | } |
| 1765 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
| 1766 | source = bs; |
| 1767 | flags |= BDRV_O_NO_BACKING; |
| 1768 | set_backing_hd = true; |
| 1769 | } |
| 1770 | |
| 1771 | size = bdrv_getlength(bs); |
| 1772 | if (size < 0) { |
| 1773 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
| 1774 | goto out; |
| 1775 | } |
| 1776 | |
| 1777 | if (backup->mode != NEW_IMAGE_MODE_EXISTING) { |
| 1778 | assert(backup->format); |
| 1779 | if (source) { |
Max Reitz | 2b088c6 | 2019-06-12 17:46:45 +0200 | [diff] [blame] | 1780 | /* Implicit filters should not appear in the filename */ |
| 1781 | BlockDriverState *explicit_backing = |
| 1782 | bdrv_skip_implicit_filters(source); |
| 1783 | |
| 1784 | bdrv_refresh_filename(explicit_backing); |
| 1785 | bdrv_img_create(backup->target, backup->format, |
| 1786 | explicit_backing->filename, |
| 1787 | explicit_backing->drv->format_name, NULL, |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1788 | size, flags, false, &local_err); |
| 1789 | } else { |
| 1790 | bdrv_img_create(backup->target, backup->format, NULL, NULL, NULL, |
| 1791 | size, flags, false, &local_err); |
| 1792 | } |
| 1793 | } |
| 1794 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1795 | if (local_err) { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1796 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1797 | goto out; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1798 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1799 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1800 | options = qdict_new(); |
| 1801 | qdict_put_str(options, "discard", "unmap"); |
| 1802 | qdict_put_str(options, "detect-zeroes", "unmap"); |
| 1803 | if (backup->format) { |
| 1804 | qdict_put_str(options, "driver", backup->format); |
| 1805 | } |
| 1806 | |
| 1807 | target_bs = bdrv_open(backup->target, NULL, options, flags, errp); |
| 1808 | if (!target_bs) { |
| 1809 | goto out; |
| 1810 | } |
| 1811 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1812 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 1813 | old_context = bdrv_get_aio_context(target_bs); |
| 1814 | aio_context_release(aio_context); |
| 1815 | aio_context_acquire(old_context); |
| 1816 | |
| 1817 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
| 1818 | if (ret < 0) { |
| 1819 | bdrv_unref(target_bs); |
| 1820 | aio_context_release(old_context); |
| 1821 | return; |
| 1822 | } |
| 1823 | |
| 1824 | aio_context_release(old_context); |
| 1825 | aio_context_acquire(aio_context); |
| 1826 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1827 | if (set_backing_hd) { |
| 1828 | bdrv_set_backing_hd(target_bs, source, &local_err); |
| 1829 | if (local_err) { |
| 1830 | goto unref; |
| 1831 | } |
| 1832 | } |
| 1833 | |
| 1834 | state->bs = bs; |
| 1835 | |
| 1836 | state->job = do_backup_common(qapi_DriveBackup_base(backup), |
| 1837 | bs, target_bs, aio_context, |
| 1838 | common->block_job_txn, errp); |
| 1839 | |
| 1840 | unref: |
| 1841 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1842 | out: |
| 1843 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1844 | } |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1845 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1846 | static void drive_backup_commit(BlkActionState *common) |
| 1847 | { |
| 1848 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1849 | AioContext *aio_context; |
| 1850 | |
| 1851 | aio_context = bdrv_get_aio_context(state->bs); |
| 1852 | aio_context_acquire(aio_context); |
| 1853 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1854 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 1855 | job_start(&state->job->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1856 | |
| 1857 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1858 | } |
| 1859 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1860 | static void drive_backup_abort(BlkActionState *common) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1861 | { |
| 1862 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1863 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1864 | if (state->job) { |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1865 | AioContext *aio_context; |
| 1866 | |
| 1867 | aio_context = bdrv_get_aio_context(state->bs); |
| 1868 | aio_context_acquire(aio_context); |
| 1869 | |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 1870 | job_cancel_sync(&state->job->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1871 | |
| 1872 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1873 | } |
| 1874 | } |
| 1875 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1876 | static void drive_backup_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1877 | { |
| 1878 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1879 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1880 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1881 | if (!state->bs) { |
| 1882 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1883 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1884 | |
| 1885 | aio_context = bdrv_get_aio_context(state->bs); |
| 1886 | aio_context_acquire(aio_context); |
| 1887 | |
| 1888 | bdrv_drained_end(state->bs); |
| 1889 | |
| 1890 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1891 | } |
| 1892 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1893 | typedef struct BlockdevBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1894 | BlkActionState common; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1895 | BlockDriverState *bs; |
| 1896 | BlockJob *job; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1897 | } BlockdevBackupState; |
| 1898 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1899 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1900 | { |
| 1901 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1902 | BlockdevBackup *backup; |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1903 | BlockDriverState *bs; |
| 1904 | BlockDriverState *target_bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1905 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1906 | AioContext *old_context; |
| 1907 | int ret; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1908 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1909 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1910 | backup = common->action->u.blockdev_backup.data; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1911 | |
Vladimir Sementsov-Ogievskiy | 930fe17 | 2018-07-02 15:46:29 -0400 | [diff] [blame] | 1912 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1913 | if (!bs) { |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1914 | return; |
| 1915 | } |
| 1916 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1917 | target_bs = bdrv_lookup_bs(backup->target, backup->target, errp); |
| 1918 | if (!target_bs) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1919 | return; |
| 1920 | } |
| 1921 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1922 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1923 | aio_context = bdrv_get_aio_context(bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1924 | old_context = bdrv_get_aio_context(target_bs); |
| 1925 | aio_context_acquire(old_context); |
| 1926 | |
| 1927 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
| 1928 | if (ret < 0) { |
| 1929 | aio_context_release(old_context); |
| 1930 | return; |
| 1931 | } |
| 1932 | |
| 1933 | aio_context_release(old_context); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1934 | aio_context_acquire(aio_context); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1935 | state->bs = bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1936 | |
| 1937 | /* Paired with .clean() */ |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1938 | bdrv_drained_begin(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1939 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1940 | state->job = do_backup_common(qapi_BlockdevBackup_base(backup), |
| 1941 | bs, target_bs, aio_context, |
| 1942 | common->block_job_txn, errp); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1943 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1944 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1945 | } |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1946 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1947 | static void blockdev_backup_commit(BlkActionState *common) |
| 1948 | { |
| 1949 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1950 | AioContext *aio_context; |
| 1951 | |
| 1952 | aio_context = bdrv_get_aio_context(state->bs); |
| 1953 | aio_context_acquire(aio_context); |
| 1954 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1955 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 1956 | job_start(&state->job->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1957 | |
| 1958 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1959 | } |
| 1960 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1961 | static void blockdev_backup_abort(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1962 | { |
| 1963 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1964 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1965 | if (state->job) { |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1966 | AioContext *aio_context; |
| 1967 | |
| 1968 | aio_context = bdrv_get_aio_context(state->bs); |
| 1969 | aio_context_acquire(aio_context); |
| 1970 | |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 1971 | job_cancel_sync(&state->job->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1972 | |
| 1973 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1974 | } |
| 1975 | } |
| 1976 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1977 | static void blockdev_backup_clean(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1978 | { |
| 1979 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1980 | AioContext *aio_context; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1981 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1982 | if (!state->bs) { |
| 1983 | return; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1984 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1985 | |
| 1986 | aio_context = bdrv_get_aio_context(state->bs); |
| 1987 | aio_context_acquire(aio_context); |
| 1988 | |
| 1989 | bdrv_drained_end(state->bs); |
| 1990 | |
| 1991 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1992 | } |
| 1993 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1994 | typedef struct BlockDirtyBitmapState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1995 | BlkActionState common; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1996 | BdrvDirtyBitmap *bitmap; |
| 1997 | BlockDriverState *bs; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1998 | HBitmap *backup; |
| 1999 | bool prepared; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2000 | bool was_enabled; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2001 | } BlockDirtyBitmapState; |
| 2002 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2003 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2004 | Error **errp) |
| 2005 | { |
| 2006 | Error *local_err = NULL; |
| 2007 | BlockDirtyBitmapAdd *action; |
| 2008 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2009 | common, common); |
| 2010 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2011 | if (action_check_completion_mode(common, errp) < 0) { |
| 2012 | return; |
| 2013 | } |
| 2014 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2015 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2016 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
| 2017 | qmp_block_dirty_bitmap_add(action->node, action->name, |
| 2018 | action->has_granularity, action->granularity, |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2019 | action->has_persistent, action->persistent, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2020 | action->has_disabled, action->disabled, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2021 | &local_err); |
| 2022 | |
| 2023 | if (!local_err) { |
| 2024 | state->prepared = true; |
| 2025 | } else { |
| 2026 | error_propagate(errp, local_err); |
| 2027 | } |
| 2028 | } |
| 2029 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2030 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2031 | { |
| 2032 | BlockDirtyBitmapAdd *action; |
| 2033 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2034 | common, common); |
| 2035 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2036 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2037 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
| 2038 | * then the node reference and bitmap name must have been valid. |
| 2039 | */ |
| 2040 | if (state->prepared) { |
| 2041 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); |
| 2042 | } |
| 2043 | } |
| 2044 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2045 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2046 | Error **errp) |
| 2047 | { |
| 2048 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2049 | common, common); |
| 2050 | BlockDirtyBitmap *action; |
| 2051 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2052 | if (action_check_completion_mode(common, errp) < 0) { |
| 2053 | return; |
| 2054 | } |
| 2055 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2056 | action = common->action->u.block_dirty_bitmap_clear.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2057 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2058 | action->name, |
| 2059 | &state->bs, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2060 | errp); |
| 2061 | if (!state->bitmap) { |
| 2062 | return; |
| 2063 | } |
| 2064 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 2065 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_DEFAULT, errp)) { |
Vladimir Sementsov-Ogievskiy | d6883bc | 2017-06-28 15:05:10 +0300 | [diff] [blame] | 2066 | return; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2067 | } |
| 2068 | |
| 2069 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2070 | } |
| 2071 | |
Vladimir Sementsov-Ogievskiy | 5c4cf8b | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2072 | static void block_dirty_bitmap_restore(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2073 | { |
| 2074 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2075 | common, common); |
| 2076 | |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 2077 | if (state->backup) { |
Vladimir Sementsov-Ogievskiy | 56bd662 | 2018-10-29 16:23:14 -0400 | [diff] [blame] | 2078 | bdrv_restore_dirty_bitmap(state->bitmap, state->backup); |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 2079 | } |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2080 | } |
| 2081 | |
Vladimir Sementsov-Ogievskiy | 5c4cf8b | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2082 | static void block_dirty_bitmap_free_backup(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2083 | { |
| 2084 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2085 | common, common); |
| 2086 | |
| 2087 | hbitmap_free(state->backup); |
| 2088 | } |
| 2089 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2090 | static void block_dirty_bitmap_enable_prepare(BlkActionState *common, |
| 2091 | Error **errp) |
| 2092 | { |
| 2093 | BlockDirtyBitmap *action; |
| 2094 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2095 | common, common); |
| 2096 | |
| 2097 | if (action_check_completion_mode(common, errp) < 0) { |
| 2098 | return; |
| 2099 | } |
| 2100 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2101 | action = common->action->u.block_dirty_bitmap_enable.data; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2102 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2103 | action->name, |
| 2104 | NULL, |
| 2105 | errp); |
| 2106 | if (!state->bitmap) { |
| 2107 | return; |
| 2108 | } |
| 2109 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 2110 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | b053bb5 | 2018-10-29 16:23:16 -0400 | [diff] [blame] | 2111 | return; |
| 2112 | } |
| 2113 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2114 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 2115 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 2116 | } |
| 2117 | |
| 2118 | static void block_dirty_bitmap_enable_abort(BlkActionState *common) |
| 2119 | { |
| 2120 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2121 | common, common); |
| 2122 | |
| 2123 | if (!state->was_enabled) { |
| 2124 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 2125 | } |
| 2126 | } |
| 2127 | |
| 2128 | static void block_dirty_bitmap_disable_prepare(BlkActionState *common, |
| 2129 | Error **errp) |
| 2130 | { |
| 2131 | BlockDirtyBitmap *action; |
| 2132 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2133 | common, common); |
| 2134 | |
| 2135 | if (action_check_completion_mode(common, errp) < 0) { |
| 2136 | return; |
| 2137 | } |
| 2138 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2139 | action = common->action->u.block_dirty_bitmap_disable.data; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2140 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2141 | action->name, |
| 2142 | NULL, |
| 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_ALLOW_RO, errp)) { |
John Snow | b053bb5 | 2018-10-29 16:23:16 -0400 | [diff] [blame] | 2149 | return; |
| 2150 | } |
| 2151 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2152 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 2153 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 2154 | } |
| 2155 | |
| 2156 | static void block_dirty_bitmap_disable_abort(BlkActionState *common) |
| 2157 | { |
| 2158 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2159 | common, common); |
| 2160 | |
| 2161 | if (state->was_enabled) { |
| 2162 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 2163 | } |
| 2164 | } |
| 2165 | |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2166 | static void block_dirty_bitmap_merge_prepare(BlkActionState *common, |
| 2167 | Error **errp) |
| 2168 | { |
| 2169 | BlockDirtyBitmapMerge *action; |
| 2170 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2171 | common, common); |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2172 | |
| 2173 | if (action_check_completion_mode(common, errp) < 0) { |
| 2174 | return; |
| 2175 | } |
| 2176 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2177 | action = common->action->u.block_dirty_bitmap_merge.data; |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2178 | |
Eric Blake | c6996cf | 2020-05-12 20:16:43 -0500 | [diff] [blame] | 2179 | state->bitmap = block_dirty_bitmap_merge(action->node, action->target, |
| 2180 | action->bitmaps, &state->backup, |
| 2181 | errp); |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2182 | } |
| 2183 | |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2184 | static void block_dirty_bitmap_remove_prepare(BlkActionState *common, |
| 2185 | Error **errp) |
| 2186 | { |
| 2187 | BlockDirtyBitmap *action; |
| 2188 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2189 | common, common); |
| 2190 | |
| 2191 | if (action_check_completion_mode(common, errp) < 0) { |
| 2192 | return; |
| 2193 | } |
| 2194 | |
| 2195 | action = common->action->u.block_dirty_bitmap_remove.data; |
| 2196 | |
Eric Blake | c6996cf | 2020-05-12 20:16:43 -0500 | [diff] [blame] | 2197 | state->bitmap = block_dirty_bitmap_remove(action->node, action->name, |
| 2198 | false, &state->bs, errp); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2199 | if (state->bitmap) { |
| 2200 | bdrv_dirty_bitmap_skip_store(state->bitmap, true); |
| 2201 | bdrv_dirty_bitmap_set_busy(state->bitmap, true); |
| 2202 | } |
| 2203 | } |
| 2204 | |
| 2205 | static void block_dirty_bitmap_remove_abort(BlkActionState *common) |
| 2206 | { |
| 2207 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2208 | common, common); |
| 2209 | |
| 2210 | if (state->bitmap) { |
| 2211 | bdrv_dirty_bitmap_skip_store(state->bitmap, false); |
| 2212 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); |
| 2213 | } |
| 2214 | } |
| 2215 | |
| 2216 | static void block_dirty_bitmap_remove_commit(BlkActionState *common) |
| 2217 | { |
| 2218 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2219 | common, common); |
| 2220 | |
| 2221 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); |
Vladimir Sementsov-Ogievskiy | 5deb6cb | 2019-09-16 17:19:09 +0300 | [diff] [blame] | 2222 | bdrv_release_dirty_bitmap(state->bitmap); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2223 | } |
| 2224 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2225 | static void abort_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2226 | { |
| 2227 | error_setg(errp, "Transaction aborted using Abort action"); |
| 2228 | } |
| 2229 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2230 | static void abort_commit(BlkActionState *common) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2231 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 2232 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2233 | } |
| 2234 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2235 | static const BlkActionOps actions[] = { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2236 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
| 2237 | .instance_size = sizeof(ExternalSnapshotState), |
| 2238 | .prepare = external_snapshot_prepare, |
| 2239 | .commit = external_snapshot_commit, |
| 2240 | .abort = external_snapshot_abort, |
Alberto Garcia | 4ad6f3d | 2015-11-13 15:00:24 +0200 | [diff] [blame] | 2241 | .clean = external_snapshot_clean, |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2242 | }, |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2243 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2244 | .instance_size = sizeof(ExternalSnapshotState), |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2245 | .prepare = external_snapshot_prepare, |
| 2246 | .commit = external_snapshot_commit, |
| 2247 | .abort = external_snapshot_abort, |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 2248 | .clean = external_snapshot_clean, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2249 | }, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2250 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
| 2251 | .instance_size = sizeof(DriveBackupState), |
| 2252 | .prepare = drive_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2253 | .commit = drive_backup_commit, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2254 | .abort = drive_backup_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2255 | .clean = drive_backup_clean, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2256 | }, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2257 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
| 2258 | .instance_size = sizeof(BlockdevBackupState), |
| 2259 | .prepare = blockdev_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2260 | .commit = blockdev_backup_commit, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2261 | .abort = blockdev_backup_abort, |
| 2262 | .clean = blockdev_backup_clean, |
| 2263 | }, |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2264 | [TRANSACTION_ACTION_KIND_ABORT] = { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2265 | .instance_size = sizeof(BlkActionState), |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2266 | .prepare = abort_prepare, |
| 2267 | .commit = abort_commit, |
| 2268 | }, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2269 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
| 2270 | .instance_size = sizeof(InternalSnapshotState), |
| 2271 | .prepare = internal_snapshot_prepare, |
| 2272 | .abort = internal_snapshot_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2273 | .clean = internal_snapshot_clean, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2274 | }, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2275 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
| 2276 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2277 | .prepare = block_dirty_bitmap_add_prepare, |
| 2278 | .abort = block_dirty_bitmap_add_abort, |
| 2279 | }, |
| 2280 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { |
| 2281 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2282 | .prepare = block_dirty_bitmap_clear_prepare, |
Vladimir Sementsov-Ogievskiy | 5c4cf8b | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2283 | .commit = block_dirty_bitmap_free_backup, |
| 2284 | .abort = block_dirty_bitmap_restore, |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2285 | }, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2286 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ENABLE] = { |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2287 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2288 | .prepare = block_dirty_bitmap_enable_prepare, |
| 2289 | .abort = block_dirty_bitmap_enable_abort, |
| 2290 | }, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2291 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_DISABLE] = { |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2292 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2293 | .prepare = block_dirty_bitmap_disable_prepare, |
| 2294 | .abort = block_dirty_bitmap_disable_abort, |
John Snow | 66da04d | 2018-09-06 09:02:25 -0400 | [diff] [blame] | 2295 | }, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2296 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_MERGE] = { |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2297 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2298 | .prepare = block_dirty_bitmap_merge_prepare, |
| 2299 | .commit = block_dirty_bitmap_free_backup, |
| 2300 | .abort = block_dirty_bitmap_restore, |
| 2301 | }, |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2302 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_REMOVE] = { |
| 2303 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2304 | .prepare = block_dirty_bitmap_remove_prepare, |
| 2305 | .commit = block_dirty_bitmap_remove_commit, |
| 2306 | .abort = block_dirty_bitmap_remove_abort, |
| 2307 | }, |
John Snow | 66da04d | 2018-09-06 09:02:25 -0400 | [diff] [blame] | 2308 | /* Where are transactions for MIRROR, COMMIT and STREAM? |
| 2309 | * Although these blockjobs use transaction callbacks like the backup job, |
| 2310 | * these jobs do not necessarily adhere to transaction semantics. |
| 2311 | * These jobs may not fully undo all of their actions on abort, nor do they |
| 2312 | * necessarily work in transactions with more than one job in them. |
| 2313 | */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2314 | }; |
| 2315 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2316 | /** |
| 2317 | * Allocate a TransactionProperties structure if necessary, and fill |
| 2318 | * that structure with desired defaults if they are unset. |
| 2319 | */ |
| 2320 | static TransactionProperties *get_transaction_properties( |
| 2321 | TransactionProperties *props) |
| 2322 | { |
| 2323 | if (!props) { |
| 2324 | props = g_new0(TransactionProperties, 1); |
| 2325 | } |
| 2326 | |
| 2327 | if (!props->has_completion_mode) { |
| 2328 | props->has_completion_mode = true; |
| 2329 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; |
| 2330 | } |
| 2331 | |
| 2332 | return props; |
| 2333 | } |
| 2334 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2335 | /* |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2336 | * 'Atomic' group operations. The operations are performed as a set, and if |
| 2337 | * any fail then we roll back all operations in the group. |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2338 | */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2339 | void qmp_transaction(TransactionActionList *dev_list, |
| 2340 | bool has_props, |
| 2341 | struct TransactionProperties *props, |
| 2342 | Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2343 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2344 | TransactionActionList *dev_entry = dev_list; |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2345 | JobTxn *block_job_txn = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2346 | BlkActionState *state, *next; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 2347 | Error *local_err = NULL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2348 | |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2349 | QTAILQ_HEAD(, BlkActionState) snap_bdrv_states; |
| 2350 | QTAILQ_INIT(&snap_bdrv_states); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2351 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2352 | /* Does this transaction get canceled as a group on failure? |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2353 | * If not, we don't really need to make a JobTxn. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2354 | */ |
| 2355 | props = get_transaction_properties(props); |
| 2356 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2357 | block_job_txn = job_txn_new(); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2358 | } |
| 2359 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2360 | /* drain all i/o before any operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2361 | bdrv_drain_all(); |
| 2362 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2363 | /* 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] | 2364 | while (NULL != dev_entry) { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2365 | TransactionAction *dev_info = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2366 | const BlkActionOps *ops; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2367 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2368 | dev_info = dev_entry->value; |
| 2369 | dev_entry = dev_entry->next; |
| 2370 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2371 | assert(dev_info->type < ARRAY_SIZE(actions)); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2372 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2373 | ops = &actions[dev_info->type]; |
Max Reitz | aa3fe71 | 2013-09-12 14:57:27 +0200 | [diff] [blame] | 2374 | assert(ops->instance_size > 0); |
| 2375 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2376 | state = g_malloc0(ops->instance_size); |
| 2377 | state->ops = ops; |
| 2378 | state->action = dev_info; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2379 | state->block_job_txn = block_job_txn; |
| 2380 | state->txn_props = props; |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2381 | QTAILQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2382 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2383 | state->ops->prepare(state, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2384 | if (local_err) { |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2385 | error_propagate(errp, local_err); |
| 2386 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2387 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2388 | } |
| 2389 | |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2390 | QTAILQ_FOREACH(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 2391 | if (state->ops->commit) { |
| 2392 | state->ops->commit(state); |
| 2393 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2394 | } |
| 2395 | |
| 2396 | /* success */ |
| 2397 | goto exit; |
| 2398 | |
| 2399 | delete_and_fail: |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2400 | /* failure, and it is all-or-none; roll back all operations */ |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2401 | QTAILQ_FOREACH_REVERSE(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2402 | if (state->ops->abort) { |
| 2403 | state->ops->abort(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2404 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2405 | } |
| 2406 | exit: |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2407 | QTAILQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2408 | if (state->ops->clean) { |
| 2409 | state->ops->clean(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2410 | } |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2411 | g_free(state); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2412 | } |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2413 | if (!has_props) { |
| 2414 | qapi_free_TransactionProperties(props); |
| 2415 | } |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2416 | job_txn_unref(block_job_txn); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2417 | } |
| 2418 | |
Benoît Canet | 12d3ba8 | 2014-01-23 21:31:35 +0100 | [diff] [blame] | 2419 | void qmp_block_passwd(bool has_device, const char *device, |
| 2420 | bool has_node_name, const char *node_name, |
| 2421 | const char *password, Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2422 | { |
Daniel P. Berrange | c01c214 | 2017-06-23 17:24:16 +0100 | [diff] [blame] | 2423 | error_setg(errp, |
| 2424 | "Setting block passwords directly is no longer supported"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 2425 | } |
| 2426 | |
Vladimir Sementsov-Ogievskiy | a3b5253 | 2017-06-28 15:05:25 +0300 | [diff] [blame] | 2427 | BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node, |
| 2428 | const char *name, |
| 2429 | Error **errp) |
| 2430 | { |
| 2431 | BdrvDirtyBitmap *bitmap; |
| 2432 | BlockDriverState *bs; |
| 2433 | BlockDirtyBitmapSha256 *ret = NULL; |
| 2434 | char *sha256; |
| 2435 | |
| 2436 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 2437 | if (!bitmap || !bs) { |
| 2438 | return NULL; |
| 2439 | } |
| 2440 | |
| 2441 | sha256 = bdrv_dirty_bitmap_sha256(bitmap, errp); |
| 2442 | if (sha256 == NULL) { |
| 2443 | return NULL; |
| 2444 | } |
| 2445 | |
| 2446 | ret = g_new(BlockDirtyBitmapSha256, 1); |
| 2447 | ret->sha256 = sha256; |
| 2448 | |
| 2449 | return ret; |
| 2450 | } |
| 2451 | |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2452 | void coroutine_fn qmp_block_resize(bool has_device, const char *device, |
| 2453 | bool has_node_name, const char *node_name, |
| 2454 | int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2455 | { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2456 | Error *local_err = NULL; |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 2457 | BlockBackend *blk = NULL; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2458 | BlockDriverState *bs; |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2459 | AioContext *old_ctx; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2460 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2461 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 2462 | has_node_name ? node_name : NULL, |
| 2463 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2464 | if (local_err) { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2465 | error_propagate(errp, local_err); |
| 2466 | return; |
| 2467 | } |
| 2468 | |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2469 | if (size < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2470 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2471 | goto out; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2472 | } |
| 2473 | |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2474 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2475 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2476 | goto out; |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2477 | } |
| 2478 | |
Eric Blake | a3aeeab | 2020-04-28 14:26:46 -0500 | [diff] [blame] | 2479 | blk = blk_new_with_bs(bs, BLK_PERM_RESIZE, BLK_PERM_ALL, errp); |
| 2480 | if (!blk) { |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 2481 | goto out; |
| 2482 | } |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 2483 | |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 2484 | bdrv_drained_begin(bs); |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2485 | old_ctx = bdrv_co_enter(bs); |
Eric Blake | a3aeeab | 2020-04-28 14:26:46 -0500 | [diff] [blame] | 2486 | blk_truncate(blk, size, false, PREALLOC_MODE_OFF, 0, errp); |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2487 | bdrv_co_leave(bs, old_ctx); |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 2488 | bdrv_drained_end(bs); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2489 | |
| 2490 | out: |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2491 | bdrv_co_lock(bs); |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 2492 | blk_unref(blk); |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2493 | bdrv_co_unlock(bs); |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2494 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2495 | |
Alberto Garcia | 2323322 | 2016-07-05 17:28:59 +0300 | [diff] [blame] | 2496 | 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] | 2497 | bool has_base, const char *base, |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2498 | bool has_base_node, const char *base_node, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2499 | bool has_backing_file, const char *backing_file, |
| 2500 | bool has_speed, int64_t speed, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2501 | bool has_on_error, BlockdevOnError on_error, |
John Snow | 241ca1a | 2018-09-06 09:02:23 -0400 | [diff] [blame] | 2502 | bool has_auto_finalize, bool auto_finalize, |
| 2503 | bool has_auto_dismiss, bool auto_dismiss, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2504 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2505 | { |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2506 | BlockDriverState *bs, *iter; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2507 | BlockDriverState *base_bs = NULL; |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2508 | AioContext *aio_context; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 2509 | Error *local_err = NULL; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2510 | const char *base_name = NULL; |
John Snow | cf6320d | 2018-09-06 09:02:12 -0400 | [diff] [blame] | 2511 | int job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2512 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2513 | if (!has_on_error) { |
| 2514 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2515 | } |
| 2516 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2517 | bs = bdrv_lookup_bs(device, device, errp); |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2518 | if (!bs) { |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2519 | return; |
| 2520 | } |
| 2521 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2522 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2523 | aio_context_acquire(aio_context); |
| 2524 | |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2525 | if (has_base && has_base_node) { |
| 2526 | error_setg(errp, "'base' and 'base-node' cannot be specified " |
| 2527 | "at the same time"); |
| 2528 | goto out; |
| 2529 | } |
| 2530 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2531 | if (has_base) { |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2532 | base_bs = bdrv_find_backing_image(bs, base); |
| 2533 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2534 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2535 | goto out; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2536 | } |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2537 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2538 | base_name = base; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2539 | } |
| 2540 | |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2541 | if (has_base_node) { |
| 2542 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 2543 | if (!base_bs) { |
| 2544 | goto out; |
| 2545 | } |
| 2546 | if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) { |
| 2547 | error_setg(errp, "Node '%s' is not a backing image of '%s'", |
| 2548 | base_node, device); |
| 2549 | goto out; |
| 2550 | } |
| 2551 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 2552 | bdrv_refresh_filename(base_bs); |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2553 | base_name = base_bs->filename; |
| 2554 | } |
| 2555 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2556 | /* Check for op blockers in the whole chain between bs and base */ |
Max Reitz | 67acfd2 | 2019-06-12 17:48:11 +0200 | [diff] [blame] | 2557 | for (iter = bs; iter && iter != base_bs; |
| 2558 | iter = bdrv_filter_or_cow_bs(iter)) |
| 2559 | { |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2560 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) { |
| 2561 | goto out; |
| 2562 | } |
| 2563 | } |
| 2564 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2565 | /* if we are streaming the entire chain, the result will have no backing |
| 2566 | * file, and specifying one is therefore an error */ |
| 2567 | if (base_bs == NULL && has_backing_file) { |
| 2568 | error_setg(errp, "backing file specified, but streaming the " |
| 2569 | "entire chain"); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2570 | goto out; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2571 | } |
| 2572 | |
| 2573 | /* backing_file string overrides base bs filename */ |
| 2574 | base_name = has_backing_file ? backing_file : base_name; |
| 2575 | |
John Snow | 241ca1a | 2018-09-06 09:02:23 -0400 | [diff] [blame] | 2576 | if (has_auto_finalize && !auto_finalize) { |
| 2577 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2578 | } |
| 2579 | if (has_auto_dismiss && !auto_dismiss) { |
| 2580 | job_flags |= JOB_MANUAL_DISMISS; |
| 2581 | } |
| 2582 | |
Alberto Garcia | 2323322 | 2016-07-05 17:28:59 +0300 | [diff] [blame] | 2583 | 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] | 2584 | job_flags, has_speed ? speed : 0, on_error, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2585 | if (local_err) { |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 2586 | error_propagate(errp, local_err); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2587 | goto out; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2588 | } |
| 2589 | |
Vladimir Sementsov-Ogievskiy | b23c580 | 2019-06-06 18:41:32 +0300 | [diff] [blame] | 2590 | trace_qmp_block_stream(bs); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2591 | |
| 2592 | out: |
| 2593 | aio_context_release(aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2594 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 2595 | |
Alberto Garcia | fd62c60 | 2016-07-05 17:29:00 +0300 | [diff] [blame] | 2596 | 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] | 2597 | bool has_base_node, const char *base_node, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2598 | bool has_base, const char *base, |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2599 | bool has_top_node, const char *top_node, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2600 | bool has_top, const char *top, |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2601 | bool has_backing_file, const char *backing_file, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2602 | bool has_speed, int64_t speed, |
Kevin Wolf | 8faad1c | 2020-02-14 21:08:11 +0100 | [diff] [blame] | 2603 | bool has_on_error, BlockdevOnError on_error, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2604 | bool has_filter_node_name, const char *filter_node_name, |
John Snow | 96fbf53 | 2018-09-06 09:02:21 -0400 | [diff] [blame] | 2605 | bool has_auto_finalize, bool auto_finalize, |
| 2606 | bool has_auto_dismiss, bool auto_dismiss, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2607 | Error **errp) |
| 2608 | { |
| 2609 | BlockDriverState *bs; |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2610 | BlockDriverState *iter; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2611 | BlockDriverState *base_bs, *top_bs; |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2612 | AioContext *aio_context; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2613 | Error *local_err = NULL; |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 2614 | int job_flags = JOB_DEFAULT; |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2615 | uint64_t top_perm, top_shared; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2616 | |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 2617 | if (!has_speed) { |
| 2618 | speed = 0; |
| 2619 | } |
Kevin Wolf | 8faad1c | 2020-02-14 21:08:11 +0100 | [diff] [blame] | 2620 | if (!has_on_error) { |
| 2621 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2622 | } |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2623 | if (!has_filter_node_name) { |
| 2624 | filter_node_name = NULL; |
| 2625 | } |
John Snow | 96fbf53 | 2018-09-06 09:02:21 -0400 | [diff] [blame] | 2626 | if (has_auto_finalize && !auto_finalize) { |
| 2627 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2628 | } |
| 2629 | if (has_auto_dismiss && !auto_dismiss) { |
| 2630 | job_flags |= JOB_MANUAL_DISMISS; |
| 2631 | } |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 2632 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2633 | /* Important Note: |
| 2634 | * libvirt relies on the DeviceNotFound error class in order to probe for |
| 2635 | * live commit feature versions; for this to work, we must make sure to |
| 2636 | * perform the device lookup before any generic errors that may occur in a |
| 2637 | * scenario in which all optional arguments are omitted. */ |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2638 | bs = qmp_get_root_bs(device, &local_err); |
| 2639 | if (!bs) { |
| 2640 | bs = bdrv_lookup_bs(device, device, NULL); |
| 2641 | if (!bs) { |
| 2642 | error_free(local_err); |
| 2643 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2644 | "Device '%s' not found", device); |
| 2645 | } else { |
| 2646 | error_propagate(errp, local_err); |
| 2647 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2648 | return; |
| 2649 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2650 | |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2651 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2652 | aio_context_acquire(aio_context); |
| 2653 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 2654 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2655 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 2656 | } |
| 2657 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2658 | /* default top_bs is the active layer */ |
| 2659 | top_bs = bs; |
| 2660 | |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2661 | if (has_top_node && has_top) { |
| 2662 | error_setg(errp, "'top-node' and 'top' are mutually exclusive"); |
| 2663 | goto out; |
| 2664 | } else if (has_top_node) { |
| 2665 | top_bs = bdrv_lookup_bs(NULL, top_node, errp); |
| 2666 | if (top_bs == NULL) { |
| 2667 | goto out; |
| 2668 | } |
| 2669 | if (!bdrv_chain_contains(bs, top_bs)) { |
| 2670 | error_setg(errp, "'%s' is not in this backing file chain", |
| 2671 | top_node); |
| 2672 | goto out; |
| 2673 | } |
| 2674 | } else if (has_top && top) { |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 2675 | /* This strcmp() is just a shortcut, there is no need to |
| 2676 | * refresh @bs's filename. If it mismatches, |
| 2677 | * bdrv_find_backing_image() will do the refresh and may still |
| 2678 | * return @bs. */ |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2679 | if (strcmp(bs->filename, top) != 0) { |
| 2680 | top_bs = bdrv_find_backing_image(bs, top); |
| 2681 | } |
| 2682 | } |
| 2683 | |
| 2684 | if (top_bs == NULL) { |
| 2685 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2686 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2687 | } |
| 2688 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2689 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
| 2690 | |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2691 | if (has_base_node && has_base) { |
| 2692 | error_setg(errp, "'base-node' and 'base' are mutually exclusive"); |
| 2693 | goto out; |
| 2694 | } else if (has_base_node) { |
| 2695 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 2696 | if (base_bs == NULL) { |
| 2697 | goto out; |
| 2698 | } |
| 2699 | if (!bdrv_chain_contains(top_bs, base_bs)) { |
| 2700 | error_setg(errp, "'%s' is not in this backing file chain", |
| 2701 | base_node); |
| 2702 | goto out; |
| 2703 | } |
| 2704 | } else if (has_base && base) { |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2705 | base_bs = bdrv_find_backing_image(top_bs, base); |
| 2706 | } else { |
| 2707 | base_bs = bdrv_find_base(top_bs); |
| 2708 | } |
| 2709 | |
| 2710 | if (base_bs == NULL) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2711 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2712 | goto out; |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2713 | } |
| 2714 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2715 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 2716 | |
Max Reitz | 9a71b9d | 2019-06-12 17:47:37 +0200 | [diff] [blame] | 2717 | for (iter = top_bs; iter != bdrv_filter_or_cow_bs(base_bs); |
| 2718 | iter = bdrv_filter_or_cow_bs(iter)) |
| 2719 | { |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2720 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 2721 | goto out; |
| 2722 | } |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 2723 | } |
| 2724 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2725 | /* Do not allow attempts to commit an image into itself */ |
| 2726 | if (top_bs == base_bs) { |
| 2727 | error_setg(errp, "cannot commit an image into itself"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2728 | goto out; |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2729 | } |
| 2730 | |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2731 | /* |
| 2732 | * Active commit is required if and only if someone has taken a |
| 2733 | * WRITE permission on the top node. Historically, we have always |
| 2734 | * used active commit for top nodes, so continue that practice |
| 2735 | * lest we possibly break clients that rely on this behavior, e.g. |
| 2736 | * to later attach this node to a writing parent. |
| 2737 | * (Active commit is never really wrong.) |
| 2738 | */ |
| 2739 | bdrv_get_cumulative_perm(top_bs, &top_perm, &top_shared); |
| 2740 | if (top_perm & BLK_PERM_WRITE || |
| 2741 | bdrv_skip_filters(top_bs) == bdrv_skip_filters(bs)) |
| 2742 | { |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2743 | if (has_backing_file) { |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2744 | if (bdrv_skip_filters(top_bs) == bdrv_skip_filters(bs)) { |
| 2745 | error_setg(errp, "'backing-file' specified," |
| 2746 | " but 'top' is the active layer"); |
| 2747 | } else { |
| 2748 | error_setg(errp, "'backing-file' specified, but 'top' has a " |
| 2749 | "writer on it"); |
| 2750 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2751 | goto out; |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2752 | } |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2753 | if (!has_job_id) { |
| 2754 | /* |
| 2755 | * Emulate here what block_job_create() does, because it |
| 2756 | * is possible that @bs != @top_bs (the block job should |
| 2757 | * be named after @bs, even if @top_bs is the actual |
| 2758 | * source) |
| 2759 | */ |
| 2760 | job_id = bdrv_get_device_name(bs); |
| 2761 | } |
| 2762 | commit_active_start(job_id, top_bs, base_bs, job_flags, speed, on_error, |
Fam Zheng | 78bbd91 | 2017-04-21 20:27:04 +0800 | [diff] [blame] | 2763 | filter_node_name, NULL, NULL, false, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 2764 | } else { |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2765 | BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs); |
| 2766 | if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 2767 | goto out; |
| 2768 | } |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 2769 | commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, job_flags, |
| 2770 | speed, on_error, has_backing_file ? backing_file : NULL, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2771 | filter_node_name, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 2772 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2773 | if (local_err != NULL) { |
| 2774 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2775 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2776 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2777 | |
| 2778 | out: |
| 2779 | aio_context_release(aio_context); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2780 | } |
| 2781 | |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2782 | /* Common QMP interface for drive-backup and blockdev-backup */ |
| 2783 | static BlockJob *do_backup_common(BackupCommon *backup, |
| 2784 | BlockDriverState *bs, |
| 2785 | BlockDriverState *target_bs, |
| 2786 | AioContext *aio_context, |
| 2787 | JobTxn *txn, Error **errp) |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2788 | { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2789 | BlockJob *job = NULL; |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 2790 | BdrvDirtyBitmap *bmap = NULL; |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2791 | int job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2792 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2793 | if (!backup->has_speed) { |
| 2794 | backup->speed = 0; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2795 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2796 | if (!backup->has_on_source_error) { |
| 2797 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2798 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2799 | if (!backup->has_on_target_error) { |
| 2800 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2801 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2802 | if (!backup->has_job_id) { |
| 2803 | backup->job_id = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2804 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 2805 | if (!backup->has_auto_finalize) { |
| 2806 | backup->auto_finalize = true; |
| 2807 | } |
| 2808 | if (!backup->has_auto_dismiss) { |
| 2809 | backup->auto_dismiss = true; |
| 2810 | } |
Pavel Butsykin | 13b9414 | 2016-07-22 11:17:52 +0300 | [diff] [blame] | 2811 | if (!backup->has_compress) { |
| 2812 | backup->compress = false; |
| 2813 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2814 | |
John Snow | a6c9365 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 2815 | if ((backup->sync == MIRROR_SYNC_MODE_BITMAP) || |
| 2816 | (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL)) { |
| 2817 | /* done before desugaring 'incremental' to print the right message */ |
| 2818 | if (!backup->has_bitmap) { |
| 2819 | error_setg(errp, "must provide a valid bitmap name for " |
| 2820 | "'%s' sync mode", MirrorSyncMode_str(backup->sync)); |
| 2821 | return NULL; |
| 2822 | } |
| 2823 | } |
| 2824 | |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2825 | if (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL) { |
| 2826 | if (backup->has_bitmap_mode && |
| 2827 | backup->bitmap_mode != BITMAP_SYNC_MODE_ON_SUCCESS) { |
| 2828 | error_setg(errp, "Bitmap sync mode must be '%s' " |
| 2829 | "when using sync mode '%s'", |
| 2830 | BitmapSyncMode_str(BITMAP_SYNC_MODE_ON_SUCCESS), |
| 2831 | MirrorSyncMode_str(backup->sync)); |
| 2832 | return NULL; |
| 2833 | } |
| 2834 | backup->has_bitmap_mode = true; |
| 2835 | backup->sync = MIRROR_SYNC_MODE_BITMAP; |
| 2836 | backup->bitmap_mode = BITMAP_SYNC_MODE_ON_SUCCESS; |
| 2837 | } |
| 2838 | |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2839 | if (backup->has_bitmap) { |
| 2840 | bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap); |
| 2841 | if (!bmap) { |
| 2842 | error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap); |
| 2843 | return NULL; |
| 2844 | } |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2845 | if (!backup->has_bitmap_mode) { |
| 2846 | error_setg(errp, "Bitmap sync mode must be given " |
| 2847 | "when providing a bitmap"); |
| 2848 | return NULL; |
| 2849 | } |
John Snow | b30ffbe | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2850 | if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2851 | return NULL; |
| 2852 | } |
John Snow | 1a2b8b4 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 2853 | |
| 2854 | /* This does not produce a useful bitmap artifact: */ |
| 2855 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
| 2856 | error_setg(errp, "sync mode '%s' does not produce meaningful bitmap" |
| 2857 | " outputs", MirrorSyncMode_str(backup->sync)); |
| 2858 | return NULL; |
| 2859 | } |
| 2860 | |
| 2861 | /* If the bitmap isn't used for input or output, this is useless: */ |
| 2862 | if (backup->bitmap_mode == BITMAP_SYNC_MODE_NEVER && |
| 2863 | backup->sync != MIRROR_SYNC_MODE_BITMAP) { |
| 2864 | error_setg(errp, "Bitmap sync mode '%s' has no meaningful effect" |
| 2865 | " when combined with sync mode '%s'", |
| 2866 | BitmapSyncMode_str(backup->bitmap_mode), |
| 2867 | MirrorSyncMode_str(backup->sync)); |
| 2868 | return NULL; |
| 2869 | } |
| 2870 | } |
| 2871 | |
| 2872 | if (!backup->has_bitmap && backup->has_bitmap_mode) { |
| 2873 | error_setg(errp, "Cannot specify bitmap sync mode without a bitmap"); |
| 2874 | return NULL; |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2875 | } |
| 2876 | |
| 2877 | if (!backup->auto_finalize) { |
| 2878 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2879 | } |
| 2880 | if (!backup->auto_dismiss) { |
| 2881 | job_flags |= JOB_MANUAL_DISMISS; |
| 2882 | } |
| 2883 | |
| 2884 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2885 | backup->sync, bmap, backup->bitmap_mode, |
| 2886 | backup->compress, |
Vladimir Sementsov-Ogievskiy | 00e30f0 | 2019-10-01 16:14:09 +0300 | [diff] [blame] | 2887 | backup->filter_node_name, |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2888 | backup->on_source_error, |
| 2889 | backup->on_target_error, |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2890 | job_flags, NULL, NULL, txn, errp); |
| 2891 | return job; |
| 2892 | } |
| 2893 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 2894 | void qmp_drive_backup(DriveBackup *backup, Error **errp) |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2895 | { |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 2896 | TransactionAction action = { |
| 2897 | .type = TRANSACTION_ACTION_KIND_DRIVE_BACKUP, |
| 2898 | .u.drive_backup.data = backup, |
| 2899 | }; |
| 2900 | blockdev_do_action(&action, errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 2901 | } |
| 2902 | |
Peter Krempa | facda54 | 2020-01-20 09:50:49 +0100 | [diff] [blame] | 2903 | BlockDeviceInfoList *qmp_query_named_block_nodes(bool has_flat, |
| 2904 | bool flat, |
| 2905 | Error **errp) |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 2906 | { |
Peter Krempa | facda54 | 2020-01-20 09:50:49 +0100 | [diff] [blame] | 2907 | bool return_flat = has_flat && flat; |
| 2908 | |
| 2909 | return bdrv_named_nodes_list(return_flat, errp); |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 2910 | } |
| 2911 | |
Vladimir Sementsov-Ogievskiy | 5d3b4e9 | 2018-12-21 20:09:07 +0300 | [diff] [blame] | 2912 | XDbgBlockGraph *qmp_x_debug_query_block_graph(Error **errp) |
| 2913 | { |
| 2914 | return bdrv_get_xdbg_block_graph(errp); |
| 2915 | } |
| 2916 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 2917 | void qmp_blockdev_backup(BlockdevBackup *backup, Error **errp) |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2918 | { |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 2919 | TransactionAction action = { |
| 2920 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP, |
| 2921 | .u.blockdev_backup.data = backup, |
| 2922 | }; |
| 2923 | blockdev_do_action(&action, errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 2924 | } |
| 2925 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2926 | /* Parameter check and block job starting for drive mirroring. |
| 2927 | * Caller should hold @device and @target's aio context (must be the same). |
| 2928 | **/ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 2929 | static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2930 | BlockDriverState *target, |
| 2931 | bool has_replaces, const char *replaces, |
| 2932 | enum MirrorSyncMode sync, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 2933 | BlockMirrorBackingMode backing_mode, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 2934 | bool zero_target, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2935 | bool has_speed, int64_t speed, |
| 2936 | bool has_granularity, uint32_t granularity, |
| 2937 | bool has_buf_size, int64_t buf_size, |
| 2938 | bool has_on_source_error, |
| 2939 | BlockdevOnError on_source_error, |
| 2940 | bool has_on_target_error, |
| 2941 | BlockdevOnError on_target_error, |
| 2942 | bool has_unmap, bool unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2943 | bool has_filter_node_name, |
| 2944 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 2945 | bool has_copy_mode, MirrorCopyMode copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 2946 | bool has_auto_finalize, bool auto_finalize, |
| 2947 | bool has_auto_dismiss, bool auto_dismiss, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2948 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2949 | { |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2950 | BlockDriverState *unfiltered_bs; |
John Snow | a1999b3 | 2018-09-06 09:02:11 -0400 | [diff] [blame] | 2951 | int job_flags = JOB_DEFAULT; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2952 | |
| 2953 | if (!has_speed) { |
| 2954 | speed = 0; |
| 2955 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 2956 | if (!has_on_source_error) { |
| 2957 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2958 | } |
| 2959 | if (!has_on_target_error) { |
| 2960 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2961 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2962 | if (!has_granularity) { |
| 2963 | granularity = 0; |
| 2964 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 2965 | if (!has_buf_size) { |
Wen Congyang | 48ac0a4 | 2015-05-15 15:51:36 +0800 | [diff] [blame] | 2966 | buf_size = 0; |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 2967 | } |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 2968 | if (!has_unmap) { |
| 2969 | unmap = true; |
| 2970 | } |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2971 | if (!has_filter_node_name) { |
| 2972 | filter_node_name = NULL; |
| 2973 | } |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 2974 | if (!has_copy_mode) { |
| 2975 | copy_mode = MIRROR_COPY_MODE_BACKGROUND; |
| 2976 | } |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 2977 | if (has_auto_finalize && !auto_finalize) { |
| 2978 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2979 | } |
| 2980 | if (has_auto_dismiss && !auto_dismiss) { |
| 2981 | job_flags |= JOB_MANUAL_DISMISS; |
| 2982 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 2983 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2984 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2985 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 2986 | "a value in range [512B, 64MB]"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2987 | return; |
| 2988 | } |
| 2989 | if (granularity & (granularity - 1)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2990 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 2991 | "power of 2"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2992 | return; |
| 2993 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2994 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2995 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 2996 | return; |
| 2997 | } |
Fam Zheng | e40e502 | 2015-12-24 12:45:04 +0800 | [diff] [blame] | 2998 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
| 2999 | return; |
| 3000 | } |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3001 | |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3002 | if (!bdrv_backing_chain_next(bs) && sync == MIRROR_SYNC_MODE_TOP) { |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3003 | sync = MIRROR_SYNC_MODE_FULL; |
| 3004 | } |
| 3005 | |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3006 | if (!has_replaces) { |
| 3007 | /* We want to mirror from @bs, but keep implicit filters on top */ |
| 3008 | unfiltered_bs = bdrv_skip_implicit_filters(bs); |
| 3009 | if (unfiltered_bs != bs) { |
| 3010 | replaces = unfiltered_bs->node_name; |
| 3011 | has_replaces = true; |
| 3012 | } |
| 3013 | } |
| 3014 | |
Max Reitz | 74ce9e4 | 2019-02-13 23:53:01 +0100 | [diff] [blame] | 3015 | if (has_replaces) { |
| 3016 | BlockDriverState *to_replace_bs; |
| 3017 | AioContext *replace_aio_context; |
| 3018 | int64_t bs_size, replace_size; |
| 3019 | |
| 3020 | bs_size = bdrv_getlength(bs); |
| 3021 | if (bs_size < 0) { |
| 3022 | error_setg_errno(errp, -bs_size, "Failed to query device's size"); |
| 3023 | return; |
| 3024 | } |
| 3025 | |
| 3026 | to_replace_bs = check_to_replace_node(bs, replaces, errp); |
| 3027 | if (!to_replace_bs) { |
| 3028 | return; |
| 3029 | } |
| 3030 | |
| 3031 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
| 3032 | aio_context_acquire(replace_aio_context); |
| 3033 | replace_size = bdrv_getlength(to_replace_bs); |
| 3034 | aio_context_release(replace_aio_context); |
| 3035 | |
| 3036 | if (replace_size < 0) { |
| 3037 | error_setg_errno(errp, -replace_size, |
| 3038 | "Failed to query the replacement node's size"); |
| 3039 | return; |
| 3040 | } |
| 3041 | if (bs_size != replace_size) { |
| 3042 | error_setg(errp, "cannot replace image with a mirror image of " |
| 3043 | "different size"); |
| 3044 | return; |
| 3045 | } |
| 3046 | } |
| 3047 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3048 | /* pass the node name to replace to mirror start since it's loose coupling |
| 3049 | * and will allow to check whether the node still exist at mirror completion |
| 3050 | */ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3051 | mirror_start(job_id, bs, target, |
John Snow | a1999b3 | 2018-09-06 09:02:11 -0400 | [diff] [blame] | 3052 | has_replaces ? replaces : NULL, job_flags, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3053 | speed, granularity, buf_size, sync, backing_mode, zero_target, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3054 | on_source_error, on_target_error, unmap, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3055 | copy_mode, errp); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3056 | } |
| 3057 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3058 | void qmp_drive_mirror(DriveMirror *arg, Error **errp) |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3059 | { |
| 3060 | BlockDriverState *bs; |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3061 | BlockDriverState *target_backing_bs, *target_bs; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3062 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3063 | AioContext *old_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3064 | BlockMirrorBackingMode backing_mode; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3065 | Error *local_err = NULL; |
| 3066 | QDict *options = NULL; |
| 3067 | int flags; |
| 3068 | int64_t size; |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3069 | const char *format = arg->format; |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3070 | bool zero_target; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3071 | int ret; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3072 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3073 | bs = qmp_get_root_bs(arg->device, errp); |
| 3074 | if (!bs) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3075 | return; |
| 3076 | } |
| 3077 | |
Paolo Bonzini | cb2af91 | 2018-02-07 17:29:20 +0100 | [diff] [blame] | 3078 | /* Early check to avoid creating target */ |
| 3079 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3080 | return; |
| 3081 | } |
| 3082 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3083 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3084 | aio_context_acquire(aio_context); |
| 3085 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3086 | if (!arg->has_mode) { |
| 3087 | arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3088 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3089 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3090 | if (!arg->has_format) { |
| 3091 | format = (arg->mode == NEW_IMAGE_MODE_EXISTING |
| 3092 | ? NULL : bs->drv->format_name); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3093 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3094 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 3095 | flags = bs->open_flags | BDRV_O_RDWR; |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3096 | target_backing_bs = bdrv_cow_bs(bdrv_skip_filters(bs)); |
| 3097 | if (!target_backing_bs && arg->sync == MIRROR_SYNC_MODE_TOP) { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3098 | arg->sync = MIRROR_SYNC_MODE_FULL; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3099 | } |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3100 | if (arg->sync == MIRROR_SYNC_MODE_NONE) { |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3101 | target_backing_bs = bs; |
Max Reitz | 117e0c8 | 2013-11-25 20:28:55 +0100 | [diff] [blame] | 3102 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3103 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3104 | size = bdrv_getlength(bs); |
| 3105 | if (size < 0) { |
| 3106 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3107 | goto out; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3108 | } |
| 3109 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3110 | if (arg->has_replaces) { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3111 | if (!arg->has_node_name) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3112 | error_setg(errp, "a node-name must be provided when replacing a" |
| 3113 | " named node of the graph"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3114 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3115 | } |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3116 | } |
| 3117 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3118 | if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) { |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3119 | backing_mode = MIRROR_SOURCE_BACKING_CHAIN; |
| 3120 | } else { |
| 3121 | backing_mode = MIRROR_OPEN_BACKING_CHAIN; |
| 3122 | } |
| 3123 | |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3124 | /* Don't open backing image in create() */ |
| 3125 | flags |= BDRV_O_NO_BACKING; |
| 3126 | |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3127 | if ((arg->sync == MIRROR_SYNC_MODE_FULL || !target_backing_bs) |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3128 | && arg->mode != NEW_IMAGE_MODE_EXISTING) |
Max Reitz | 1452686 | 2013-11-06 19:50:44 +0100 | [diff] [blame] | 3129 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3130 | /* create new image w/o backing file */ |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3131 | assert(format); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3132 | bdrv_img_create(arg->target, format, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3133 | NULL, NULL, NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3134 | } else { |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3135 | /* Implicit filters should not appear in the filename */ |
| 3136 | BlockDriverState *explicit_backing = |
| 3137 | bdrv_skip_implicit_filters(target_backing_bs); |
| 3138 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3139 | switch (arg->mode) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3140 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3141 | break; |
| 3142 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
| 3143 | /* create new image with backing file */ |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3144 | bdrv_refresh_filename(explicit_backing); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3145 | bdrv_img_create(arg->target, format, |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3146 | explicit_backing->filename, |
| 3147 | explicit_backing->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3148 | NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3149 | break; |
| 3150 | default: |
| 3151 | abort(); |
| 3152 | } |
| 3153 | } |
| 3154 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3155 | if (local_err) { |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3156 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3157 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3158 | } |
| 3159 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3160 | options = qdict_new(); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3161 | if (arg->has_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3162 | qdict_put_str(options, "node-name", arg->node_name); |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3163 | } |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3164 | if (format) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3165 | qdict_put_str(options, "driver", format); |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3166 | } |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3167 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 3168 | /* Mirroring takes care of copy-on-write using the source's backing |
| 3169 | * file. |
| 3170 | */ |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3171 | target_bs = bdrv_open(arg->target, NULL, options, flags, errp); |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 3172 | if (!target_bs) { |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3173 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3174 | } |
| 3175 | |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3176 | zero_target = (arg->sync == MIRROR_SYNC_MODE_FULL && |
| 3177 | (arg->mode == NEW_IMAGE_MODE_EXISTING || |
| 3178 | !bdrv_has_zero_init(target_bs))); |
| 3179 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3180 | |
| 3181 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 3182 | old_context = bdrv_get_aio_context(target_bs); |
| 3183 | aio_context_release(aio_context); |
| 3184 | aio_context_acquire(old_context); |
| 3185 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3186 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
| 3187 | if (ret < 0) { |
| 3188 | bdrv_unref(target_bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3189 | aio_context_release(old_context); |
| 3190 | return; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3191 | } |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3192 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3193 | aio_context_release(old_context); |
| 3194 | aio_context_acquire(aio_context); |
| 3195 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3196 | blockdev_mirror_common(arg->has_job_id ? arg->job_id : NULL, bs, target_bs, |
| 3197 | arg->has_replaces, arg->replaces, arg->sync, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3198 | backing_mode, zero_target, |
| 3199 | arg->has_speed, arg->speed, |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3200 | arg->has_granularity, arg->granularity, |
| 3201 | arg->has_buf_size, arg->buf_size, |
| 3202 | arg->has_on_source_error, arg->on_source_error, |
| 3203 | arg->has_on_target_error, arg->on_target_error, |
| 3204 | arg->has_unmap, arg->unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3205 | false, NULL, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3206 | arg->has_copy_mode, arg->copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3207 | arg->has_auto_finalize, arg->auto_finalize, |
| 3208 | arg->has_auto_dismiss, arg->auto_dismiss, |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 3209 | errp); |
Kevin Wolf | e253f4b | 2016-04-12 16:17:41 +0200 | [diff] [blame] | 3210 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3211 | out: |
| 3212 | aio_context_release(aio_context); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3213 | } |
| 3214 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3215 | void qmp_blockdev_mirror(bool has_job_id, const char *job_id, |
| 3216 | const char *device, const char *target, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3217 | bool has_replaces, const char *replaces, |
| 3218 | MirrorSyncMode sync, |
| 3219 | bool has_speed, int64_t speed, |
| 3220 | bool has_granularity, uint32_t granularity, |
| 3221 | bool has_buf_size, int64_t buf_size, |
| 3222 | bool has_on_source_error, |
| 3223 | BlockdevOnError on_source_error, |
| 3224 | bool has_on_target_error, |
| 3225 | BlockdevOnError on_target_error, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3226 | bool has_filter_node_name, |
| 3227 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3228 | bool has_copy_mode, MirrorCopyMode copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3229 | bool has_auto_finalize, bool auto_finalize, |
| 3230 | bool has_auto_dismiss, bool auto_dismiss, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3231 | Error **errp) |
| 3232 | { |
| 3233 | BlockDriverState *bs; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3234 | BlockDriverState *target_bs; |
| 3235 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3236 | AioContext *old_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3237 | BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3238 | bool zero_target; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3239 | int ret; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3240 | |
Kevin Wolf | 07eec65 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3241 | bs = qmp_get_root_bs(device, errp); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3242 | if (!bs) { |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3243 | return; |
| 3244 | } |
| 3245 | |
| 3246 | target_bs = bdrv_lookup_bs(target, target, errp); |
| 3247 | if (!target_bs) { |
| 3248 | return; |
| 3249 | } |
| 3250 | |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3251 | zero_target = (sync == MIRROR_SYNC_MODE_FULL); |
| 3252 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3253 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 3254 | old_context = bdrv_get_aio_context(target_bs); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3255 | aio_context = bdrv_get_aio_context(bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3256 | aio_context_acquire(old_context); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3257 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3258 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3259 | |
| 3260 | aio_context_release(old_context); |
| 3261 | aio_context_acquire(aio_context); |
| 3262 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3263 | if (ret < 0) { |
| 3264 | goto out; |
| 3265 | } |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3266 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3267 | blockdev_mirror_common(has_job_id ? job_id : NULL, bs, target_bs, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3268 | has_replaces, replaces, sync, backing_mode, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3269 | zero_target, has_speed, speed, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3270 | has_granularity, granularity, |
| 3271 | has_buf_size, buf_size, |
| 3272 | has_on_source_error, on_source_error, |
| 3273 | has_on_target_error, on_target_error, |
| 3274 | true, true, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3275 | has_filter_node_name, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3276 | has_copy_mode, copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3277 | has_auto_finalize, auto_finalize, |
| 3278 | has_auto_dismiss, auto_dismiss, |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 3279 | errp); |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3280 | out: |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3281 | aio_context_release(aio_context); |
| 3282 | } |
| 3283 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3284 | /* Get a block job using its ID and acquire its AioContext */ |
| 3285 | static BlockJob *find_block_job(const char *id, AioContext **aio_context, |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3286 | Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3287 | { |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3288 | BlockJob *job; |
| 3289 | |
| 3290 | assert(id != NULL); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3291 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3292 | *aio_context = NULL; |
| 3293 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3294 | job = block_job_get(id); |
| 3295 | |
| 3296 | if (!job) { |
| 3297 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
| 3298 | "Block job '%s' not found", id); |
| 3299 | return NULL; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3300 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3301 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3302 | *aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3303 | aio_context_acquire(*aio_context); |
| 3304 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3305 | return job; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3306 | } |
| 3307 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3308 | 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] | 3309 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3310 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3311 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3312 | |
| 3313 | if (!job) { |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3314 | return; |
| 3315 | } |
| 3316 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3317 | block_job_set_speed(job, speed, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3318 | aio_context_release(aio_context); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3319 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3320 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3321 | void qmp_block_job_cancel(const char *device, |
| 3322 | bool has_force, bool force, Error **errp) |
| 3323 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3324 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3325 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3326 | |
| 3327 | if (!job) { |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3328 | return; |
| 3329 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3330 | |
| 3331 | if (!has_force) { |
| 3332 | force = false; |
| 3333 | } |
| 3334 | |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 3335 | if (job_user_paused(&job->job) && !force) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 3336 | error_setg(errp, "The block job for device '%s' is currently paused", |
| 3337 | device); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3338 | goto out; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3339 | } |
| 3340 | |
| 3341 | trace_qmp_block_job_cancel(job); |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 3342 | job_user_cancel(&job->job, force, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3343 | out: |
| 3344 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3345 | } |
| 3346 | |
| 3347 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3348 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3349 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3350 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3351 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3352 | if (!job) { |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3353 | return; |
| 3354 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3355 | |
| 3356 | trace_qmp_block_job_pause(job); |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 3357 | job_user_pause(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3358 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3359 | } |
| 3360 | |
| 3361 | void qmp_block_job_resume(const char *device, Error **errp) |
| 3362 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3363 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3364 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3365 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3366 | if (!job) { |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 3367 | return; |
| 3368 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3369 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3370 | trace_qmp_block_job_resume(job); |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 3371 | job_user_resume(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3372 | aio_context_release(aio_context); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3373 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3374 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3375 | void qmp_block_job_complete(const char *device, Error **errp) |
| 3376 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3377 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3378 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3379 | |
| 3380 | if (!job) { |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3381 | return; |
| 3382 | } |
| 3383 | |
| 3384 | trace_qmp_block_job_complete(job); |
Kevin Wolf | 3453d97 | 2018-04-23 12:24:16 +0200 | [diff] [blame] | 3385 | job_complete(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3386 | aio_context_release(aio_context); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3387 | } |
| 3388 | |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3389 | void qmp_block_job_finalize(const char *id, Error **errp) |
| 3390 | { |
| 3391 | AioContext *aio_context; |
| 3392 | BlockJob *job = find_block_job(id, &aio_context, errp); |
| 3393 | |
| 3394 | if (!job) { |
| 3395 | return; |
| 3396 | } |
| 3397 | |
| 3398 | trace_qmp_block_job_finalize(job); |
Stefan Reiter | b660a84 | 2020-04-07 13:56:49 +0200 | [diff] [blame] | 3399 | job_ref(&job->job); |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 3400 | job_finalize(&job->job, errp); |
Stefan Reiter | b660a84 | 2020-04-07 13:56:49 +0200 | [diff] [blame] | 3401 | |
| 3402 | /* |
| 3403 | * Job's context might have changed via job_finalize (and job_txn_apply |
| 3404 | * automatically acquires the new one), so make sure we release the correct |
| 3405 | * one. |
| 3406 | */ |
| 3407 | aio_context = blk_get_aio_context(job->blk); |
| 3408 | job_unref(&job->job); |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3409 | aio_context_release(aio_context); |
| 3410 | } |
| 3411 | |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3412 | void qmp_block_job_dismiss(const char *id, Error **errp) |
| 3413 | { |
| 3414 | AioContext *aio_context; |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3415 | BlockJob *bjob = find_block_job(id, &aio_context, errp); |
| 3416 | Job *job; |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3417 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3418 | if (!bjob) { |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3419 | return; |
| 3420 | } |
| 3421 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3422 | trace_qmp_block_job_dismiss(bjob); |
| 3423 | job = &bjob->job; |
| 3424 | job_dismiss(&job, errp); |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3425 | aio_context_release(aio_context); |
| 3426 | } |
| 3427 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3428 | void qmp_change_backing_file(const char *device, |
| 3429 | const char *image_node_name, |
| 3430 | const char *backing_file, |
| 3431 | Error **errp) |
| 3432 | { |
| 3433 | BlockDriverState *bs = NULL; |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3434 | AioContext *aio_context; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3435 | BlockDriverState *image_bs = NULL; |
| 3436 | Error *local_err = NULL; |
| 3437 | bool ro; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3438 | int ret; |
| 3439 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3440 | bs = qmp_get_root_bs(device, errp); |
| 3441 | if (!bs) { |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3442 | return; |
| 3443 | } |
| 3444 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3445 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3446 | aio_context_acquire(aio_context); |
| 3447 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3448 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
| 3449 | if (local_err) { |
| 3450 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3451 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3452 | } |
| 3453 | |
| 3454 | if (!image_bs) { |
| 3455 | error_setg(errp, "image file not found"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3456 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3457 | } |
| 3458 | |
| 3459 | if (bdrv_find_base(image_bs) == image_bs) { |
| 3460 | error_setg(errp, "not allowing backing file change on an image " |
| 3461 | "without a backing file"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3462 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3463 | } |
| 3464 | |
| 3465 | /* even though we are not necessarily operating on bs, we need it to |
| 3466 | * determine if block ops are currently prohibited on the chain */ |
| 3467 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3468 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3469 | } |
| 3470 | |
| 3471 | /* final sanity check */ |
| 3472 | if (!bdrv_chain_contains(bs, image_bs)) { |
| 3473 | error_setg(errp, "'%s' and image file are not in the same chain", |
| 3474 | device); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3475 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3476 | } |
| 3477 | |
| 3478 | /* if not r/w, reopen to make r/w */ |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3479 | ro = bdrv_is_read_only(image_bs); |
| 3480 | |
| 3481 | if (ro) { |
Alberto Garcia | 051a60f | 2018-11-12 16:00:38 +0200 | [diff] [blame] | 3482 | if (bdrv_reopen_set_read_only(image_bs, false, errp) != 0) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3483 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3484 | } |
| 3485 | } |
| 3486 | |
| 3487 | ret = bdrv_change_backing_file(image_bs, backing_file, |
Eric Blake | e54ee1b | 2020-07-06 15:39:53 -0500 | [diff] [blame] | 3488 | image_bs->drv ? image_bs->drv->format_name : "", |
| 3489 | false); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3490 | |
| 3491 | if (ret < 0) { |
| 3492 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", |
| 3493 | backing_file); |
| 3494 | /* don't exit here, so we can try to restore open flags if |
| 3495 | * appropriate */ |
| 3496 | } |
| 3497 | |
| 3498 | if (ro) { |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 3499 | bdrv_reopen_set_read_only(image_bs, true, errp); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3500 | } |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3501 | |
| 3502 | out: |
| 3503 | aio_context_release(aio_context); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3504 | } |
| 3505 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3506 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 3507 | { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3508 | BlockDriverState *bs; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3509 | QObject *obj; |
Daniel P. Berrange | 7d5e199 | 2016-09-30 15:45:28 +0100 | [diff] [blame] | 3510 | Visitor *v = qobject_output_visitor_new(&obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3511 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3512 | |
Markus Armbruster | 1f58424 | 2020-04-24 10:43:35 +0200 | [diff] [blame] | 3513 | visit_type_BlockdevOptions(v, NULL, &options, &error_abort); |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 3514 | visit_complete(v, &obj); |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 3515 | qdict = qobject_to(QDict, obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3516 | |
| 3517 | qdict_flatten(qdict); |
| 3518 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3519 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 3520 | error_setg(errp, "'node-name' must be specified for the root node"); |
| 3521 | goto fail; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3522 | } |
| 3523 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3524 | bs = bds_tree_init(qdict, errp); |
| 3525 | if (!bs) { |
| 3526 | goto fail; |
| 3527 | } |
| 3528 | |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 3529 | bdrv_set_monitor_owned(bs); |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3530 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3531 | fail: |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 3532 | visit_free(v); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3533 | } |
| 3534 | |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3535 | void qmp_x_blockdev_reopen(BlockdevOptions *options, Error **errp) |
| 3536 | { |
| 3537 | BlockDriverState *bs; |
| 3538 | AioContext *ctx; |
| 3539 | QObject *obj; |
| 3540 | Visitor *v = qobject_output_visitor_new(&obj); |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3541 | BlockReopenQueue *queue; |
| 3542 | QDict *qdict; |
| 3543 | |
| 3544 | /* Check for the selected node name */ |
| 3545 | if (!options->has_node_name) { |
| 3546 | error_setg(errp, "Node name not specified"); |
| 3547 | goto fail; |
| 3548 | } |
| 3549 | |
| 3550 | bs = bdrv_find_node(options->node_name); |
| 3551 | if (!bs) { |
| 3552 | error_setg(errp, "Cannot find node named '%s'", options->node_name); |
| 3553 | goto fail; |
| 3554 | } |
| 3555 | |
| 3556 | /* Put all options in a QDict and flatten it */ |
Markus Armbruster | 1f58424 | 2020-04-24 10:43:35 +0200 | [diff] [blame] | 3557 | visit_type_BlockdevOptions(v, NULL, &options, &error_abort); |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3558 | visit_complete(v, &obj); |
| 3559 | qdict = qobject_to(QDict, obj); |
| 3560 | |
| 3561 | qdict_flatten(qdict); |
| 3562 | |
| 3563 | /* Perform the reopen operation */ |
| 3564 | ctx = bdrv_get_aio_context(bs); |
| 3565 | aio_context_acquire(ctx); |
| 3566 | bdrv_subtree_drained_begin(bs); |
| 3567 | queue = bdrv_reopen_queue(NULL, bs, qdict, false); |
| 3568 | bdrv_reopen_multiple(queue, errp); |
| 3569 | bdrv_subtree_drained_end(bs); |
| 3570 | aio_context_release(ctx); |
| 3571 | |
| 3572 | fail: |
| 3573 | visit_free(v); |
| 3574 | } |
| 3575 | |
Markus Armbruster | 79b7a77 | 2017-03-21 17:53:28 +0100 | [diff] [blame] | 3576 | void qmp_blockdev_del(const char *node_name, Error **errp) |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3577 | { |
| 3578 | AioContext *aio_context; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3579 | BlockDriverState *bs; |
| 3580 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3581 | bs = bdrv_find_node(node_name); |
| 3582 | if (!bs) { |
| 3583 | error_setg(errp, "Cannot find node %s", node_name); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3584 | return; |
| 3585 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3586 | if (bdrv_has_blk(bs)) { |
| 3587 | error_setg(errp, "Node %s is in use", node_name); |
| 3588 | return; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3589 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3590 | aio_context = bdrv_get_aio_context(bs); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3591 | aio_context_acquire(aio_context); |
| 3592 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3593 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
| 3594 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3595 | } |
| 3596 | |
Paolo Bonzini | 70537ed | 2018-12-06 23:00:09 +0100 | [diff] [blame] | 3597 | if (!QTAILQ_IN_USE(bs, monitor_list)) { |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3598 | error_setg(errp, "Node %s is not owned by the monitor", |
| 3599 | bs->node_name); |
| 3600 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3601 | } |
| 3602 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3603 | if (bs->refcnt > 1) { |
| 3604 | error_setg(errp, "Block device %s is in use", |
| 3605 | bdrv_get_device_or_node_name(bs)); |
| 3606 | goto out; |
| 3607 | } |
| 3608 | |
| 3609 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
| 3610 | bdrv_unref(bs); |
| 3611 | |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3612 | out: |
| 3613 | aio_context_release(aio_context); |
| 3614 | } |
| 3615 | |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3616 | static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs, |
| 3617 | const char *child_name) |
| 3618 | { |
| 3619 | BdrvChild *child; |
| 3620 | |
| 3621 | QLIST_FOREACH(child, &parent_bs->children, next) { |
| 3622 | if (strcmp(child->name, child_name) == 0) { |
| 3623 | return child; |
| 3624 | } |
| 3625 | } |
| 3626 | |
| 3627 | return NULL; |
| 3628 | } |
| 3629 | |
| 3630 | void qmp_x_blockdev_change(const char *parent, bool has_child, |
| 3631 | const char *child, bool has_node, |
| 3632 | const char *node, Error **errp) |
| 3633 | { |
| 3634 | BlockDriverState *parent_bs, *new_bs = NULL; |
| 3635 | BdrvChild *p_child; |
| 3636 | |
| 3637 | parent_bs = bdrv_lookup_bs(parent, parent, errp); |
| 3638 | if (!parent_bs) { |
| 3639 | return; |
| 3640 | } |
| 3641 | |
| 3642 | if (has_child == has_node) { |
| 3643 | if (has_child) { |
| 3644 | error_setg(errp, "The parameters child and node are in conflict"); |
| 3645 | } else { |
| 3646 | error_setg(errp, "Either child or node must be specified"); |
| 3647 | } |
| 3648 | return; |
| 3649 | } |
| 3650 | |
| 3651 | if (has_child) { |
| 3652 | p_child = bdrv_find_child(parent_bs, child); |
| 3653 | if (!p_child) { |
| 3654 | error_setg(errp, "Node '%s' does not have child '%s'", |
| 3655 | parent, child); |
| 3656 | return; |
| 3657 | } |
| 3658 | bdrv_del_child(parent_bs, p_child, errp); |
| 3659 | } |
| 3660 | |
| 3661 | if (has_node) { |
| 3662 | new_bs = bdrv_find_node(node); |
| 3663 | if (!new_bs) { |
| 3664 | error_setg(errp, "Node '%s' not found", node); |
| 3665 | return; |
| 3666 | } |
| 3667 | bdrv_add_child(parent_bs, new_bs, errp); |
| 3668 | } |
| 3669 | } |
| 3670 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3671 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 3672 | { |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3673 | BlockJobInfoList *head = NULL, **p_next = &head; |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 3674 | BlockJob *job; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3675 | |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 3676 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3677 | BlockJobInfoList *elem; |
| 3678 | AioContext *aio_context; |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 3679 | |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3680 | if (block_job_is_internal(job)) { |
| 3681 | continue; |
| 3682 | } |
| 3683 | elem = g_new0(BlockJobInfoList, 1); |
| 3684 | aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 3685 | aio_context_acquire(aio_context); |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3686 | elem->value = block_job_query(job, errp); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 3687 | aio_context_release(aio_context); |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3688 | if (!elem->value) { |
| 3689 | g_free(elem); |
| 3690 | qapi_free_BlockJobInfoList(head); |
| 3691 | return NULL; |
| 3692 | } |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 3693 | *p_next = elem; |
| 3694 | p_next = &elem->next; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3695 | } |
| 3696 | |
| 3697 | return head; |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3698 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3699 | |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3700 | void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 3701 | bool has_force, bool force, Error **errp) |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3702 | { |
| 3703 | AioContext *old_context; |
| 3704 | AioContext *new_context; |
| 3705 | BlockDriverState *bs; |
| 3706 | |
| 3707 | bs = bdrv_find_node(node_name); |
| 3708 | if (!bs) { |
| 3709 | error_setg(errp, "Cannot find node %s", node_name); |
| 3710 | return; |
| 3711 | } |
| 3712 | |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 3713 | /* Protects against accidents. */ |
| 3714 | if (!(has_force && force) && bdrv_has_blk(bs)) { |
| 3715 | error_setg(errp, "Node %s is associated with a BlockBackend and could " |
| 3716 | "be in use (use force=true to override this check)", |
| 3717 | node_name); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3718 | return; |
| 3719 | } |
| 3720 | |
| 3721 | if (iothread->type == QTYPE_QSTRING) { |
| 3722 | IOThread *obj = iothread_by_id(iothread->u.s); |
| 3723 | if (!obj) { |
| 3724 | error_setg(errp, "Cannot find iothread %s", iothread->u.s); |
| 3725 | return; |
| 3726 | } |
| 3727 | |
| 3728 | new_context = iothread_get_aio_context(obj); |
| 3729 | } else { |
| 3730 | new_context = qemu_get_aio_context(); |
| 3731 | } |
| 3732 | |
| 3733 | old_context = bdrv_get_aio_context(bs); |
| 3734 | aio_context_acquire(old_context); |
| 3735 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3736 | bdrv_try_set_aio_context(bs, new_context, errp); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3737 | |
| 3738 | aio_context_release(old_context); |
| 3739 | } |
| 3740 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3741 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3742 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3743 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3744 | .desc = { |
| 3745 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3746 | .name = "snapshot", |
| 3747 | .type = QEMU_OPT_BOOL, |
| 3748 | .help = "enable/disable snapshot mode", |
| 3749 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3750 | .name = "aio", |
| 3751 | .type = QEMU_OPT_STRING, |
Aarushi Mehta | f80f267 | 2020-01-20 14:18:50 +0000 | [diff] [blame] | 3752 | .help = "host AIO implementation (threads, native, io_uring)", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3753 | },{ |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 3754 | .name = BDRV_OPT_CACHE_WB, |
| 3755 | .type = QEMU_OPT_BOOL, |
| 3756 | .help = "Enable writeback mode", |
| 3757 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3758 | .name = "format", |
| 3759 | .type = QEMU_OPT_STRING, |
| 3760 | .help = "disk format (raw, qcow2, ...)", |
| 3761 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3762 | .name = "rerror", |
| 3763 | .type = QEMU_OPT_STRING, |
| 3764 | .help = "read error action", |
| 3765 | },{ |
| 3766 | .name = "werror", |
| 3767 | .type = QEMU_OPT_STRING, |
| 3768 | .help = "write error action", |
| 3769 | },{ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 3770 | .name = BDRV_OPT_READ_ONLY, |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3771 | .type = QEMU_OPT_BOOL, |
| 3772 | .help = "open drive file as read-only", |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 3773 | }, |
| 3774 | |
| 3775 | THROTTLE_OPTS, |
| 3776 | |
| 3777 | { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 3778 | .name = "throttling.group", |
| 3779 | .type = QEMU_OPT_STRING, |
| 3780 | .help = "name of the block throttling group", |
| 3781 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3782 | .name = "copy-on-read", |
| 3783 | .type = QEMU_OPT_BOOL, |
| 3784 | .help = "copy read data from backing file into image file", |
Peter Lieven | 465bee1 | 2014-05-18 00:58:19 +0200 | [diff] [blame] | 3785 | },{ |
| 3786 | .name = "detect-zeroes", |
| 3787 | .type = QEMU_OPT_STRING, |
| 3788 | .help = "try to optimize zero writes (off, on, unmap)", |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 3789 | },{ |
| 3790 | .name = "stats-account-invalid", |
| 3791 | .type = QEMU_OPT_BOOL, |
| 3792 | .help = "whether to account for invalid I/O operations " |
| 3793 | "in the statistics", |
| 3794 | },{ |
| 3795 | .name = "stats-account-failed", |
| 3796 | .type = QEMU_OPT_BOOL, |
| 3797 | .help = "whether to account for failed I/O operations " |
| 3798 | "in the statistics", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3799 | }, |
| 3800 | { /* end of list */ } |
| 3801 | }, |
| 3802 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3803 | |
| 3804 | QemuOptsList qemu_drive_opts = { |
| 3805 | .name = "drive", |
| 3806 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 3807 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 3808 | /* |
| 3809 | * no elements => accept any params |
| 3810 | * validation will happen later |
| 3811 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3812 | { /* end of list */ } |
| 3813 | }, |
| 3814 | }; |