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" |
Markus Armbruster | 54d3123 | 2019-08-12 07:23:59 +0200 | [diff] [blame] | 60 | #include "sysemu/runstate.h" |
Pavel Dovgalyuk | b39847a | 2020-10-03 20:13:08 +0300 | [diff] [blame] | 61 | #include "sysemu/replay.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 62 | #include "qemu/cutils.h" |
| 63 | #include "qemu/help_option.h" |
Markus Armbruster | db72581 | 2019-08-12 07:23:50 +0200 | [diff] [blame] | 64 | #include "qemu/main-loop.h" |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 65 | #include "qemu/throttle-options.h" |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 66 | |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 67 | QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 68 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); |
| 69 | |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 70 | void bdrv_set_monitor_owned(BlockDriverState *bs) |
| 71 | { |
| 72 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 73 | } |
| 74 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 75 | static const char *const if_name[IF_COUNT] = { |
| 76 | [IF_NONE] = "none", |
| 77 | [IF_IDE] = "ide", |
| 78 | [IF_SCSI] = "scsi", |
| 79 | [IF_FLOPPY] = "floppy", |
| 80 | [IF_PFLASH] = "pflash", |
| 81 | [IF_MTD] = "mtd", |
| 82 | [IF_SD] = "sd", |
| 83 | [IF_VIRTIO] = "virtio", |
| 84 | [IF_XEN] = "xen", |
| 85 | }; |
| 86 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 87 | static int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 88 | /* |
| 89 | * Do not change these numbers! They govern how drive option |
| 90 | * index maps to unit and bus. That mapping is ABI. |
| 91 | * |
Wei Jiangang | 547cb15 | 2016-04-26 18:12:43 +0800 | [diff] [blame] | 92 | * All controllers used to implement if=T drives need to support |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 93 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 94 | * Otherwise, some index values map to "impossible" bus, unit |
| 95 | * values. |
| 96 | * |
| 97 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 98 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 99 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 100 | * the drive can't be set up. Regression. |
| 101 | */ |
| 102 | [IF_IDE] = 2, |
| 103 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 104 | }; |
| 105 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 106 | /** |
| 107 | * Boards may call this to offer board-by-board overrides |
| 108 | * of the default, global values. |
| 109 | */ |
| 110 | void override_max_devs(BlockInterfaceType type, int max_devs) |
| 111 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 112 | BlockBackend *blk; |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 113 | DriveInfo *dinfo; |
| 114 | |
| 115 | if (max_devs <= 0) { |
| 116 | return; |
| 117 | } |
| 118 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 119 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 120 | dinfo = blk_legacy_dinfo(blk); |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 121 | if (dinfo->type == type) { |
| 122 | fprintf(stderr, "Cannot override units-per-bus property of" |
| 123 | " the %s interface, because a drive of that type has" |
| 124 | " already been added.\n", if_name[type]); |
| 125 | g_assert_not_reached(); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | if_max_devs[type] = max_devs; |
| 130 | } |
| 131 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 132 | /* |
| 133 | * We automatically delete the drive when a device using it gets |
| 134 | * unplugged. Questionable feature, but we can't just drop it. |
| 135 | * Device models call blockdev_mark_auto_del() to schedule the |
| 136 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 137 | * when deletion is actually safe. |
| 138 | */ |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 139 | void blockdev_mark_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 140 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 141 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 142 | BlockJob *job; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 143 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 144 | if (!dinfo) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 145 | return; |
| 146 | } |
| 147 | |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 148 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
| 149 | if (block_job_has_bdrv(job, blk_bs(blk))) { |
| 150 | AioContext *aio_context = job->job.aio_context; |
| 151 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 152 | |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 153 | job_cancel(&job->job, false); |
| 154 | |
| 155 | aio_context_release(aio_context); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 156 | } |
Paolo Bonzini | 12bde0e | 2012-03-30 13:17:10 +0200 | [diff] [blame] | 157 | } |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 158 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 159 | dinfo->auto_del = 1; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 160 | } |
| 161 | |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 162 | void blockdev_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 163 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 164 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 165 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 166 | if (dinfo && dinfo->auto_del) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 167 | monitor_remove_blk(blk); |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 168 | blk_unref(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 169 | } |
| 170 | } |
| 171 | |
John Snow | d8f94e1 | 2014-10-01 14:19:27 -0400 | [diff] [blame] | 172 | /** |
| 173 | * Returns the current mapping of how many units per bus |
| 174 | * a particular interface can support. |
| 175 | * |
| 176 | * A positive integer indicates n units per bus. |
| 177 | * 0 implies the mapping has not been established. |
| 178 | * -1 indicates an invalid BlockInterfaceType was given. |
| 179 | */ |
| 180 | int drive_get_max_devs(BlockInterfaceType type) |
| 181 | { |
| 182 | if (type >= IF_IDE && type < IF_COUNT) { |
| 183 | return if_max_devs[type]; |
| 184 | } |
| 185 | |
| 186 | return -1; |
| 187 | } |
| 188 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 189 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 190 | { |
| 191 | int max_devs = if_max_devs[type]; |
| 192 | return max_devs ? index / max_devs : 0; |
| 193 | } |
| 194 | |
| 195 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 196 | { |
| 197 | int max_devs = if_max_devs[type]; |
| 198 | return max_devs ? index % max_devs : index; |
| 199 | } |
| 200 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 201 | QemuOpts *drive_def(const char *optstr) |
| 202 | { |
Markus Armbruster | 70b9433 | 2015-02-13 12:50:26 +0100 | [diff] [blame] | 203 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 207 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 208 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 209 | QemuOpts *opts; |
| 210 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 211 | opts = drive_def(optstr); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 212 | if (!opts) { |
| 213 | return NULL; |
| 214 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 215 | if (type != IF_DEFAULT) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 216 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 217 | } |
| 218 | if (index >= 0) { |
Markus Armbruster | a8b18f8 | 2015-02-13 15:50:43 +0100 | [diff] [blame] | 219 | qemu_opt_set_number(opts, "index", index, &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 220 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 221 | if (file) |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 222 | qemu_opt_set(opts, "file", file, &error_abort); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 223 | return opts; |
| 224 | } |
| 225 | |
| 226 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 227 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 228 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 229 | DriveInfo *dinfo; |
| 230 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 231 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 232 | dinfo = blk_legacy_dinfo(blk); |
| 233 | if (dinfo && dinfo->type == type |
| 234 | && dinfo->bus == bus && dinfo->unit == unit) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 235 | return dinfo; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 236 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | return NULL; |
| 240 | } |
| 241 | |
Markus Armbruster | fe9f70a | 2021-03-09 17:12:13 +0100 | [diff] [blame] | 242 | /* |
| 243 | * Check board claimed all -drive that are meant to be claimed. |
| 244 | * Fatal error if any remain unclaimed. |
| 245 | */ |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 246 | void drive_check_orphaned(void) |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 247 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 248 | BlockBackend *blk; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 249 | DriveInfo *dinfo; |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 250 | Location loc; |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 251 | bool orphans = false; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 252 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 253 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 254 | dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | fe9f70a | 2021-03-09 17:12:13 +0100 | [diff] [blame] | 255 | /* |
| 256 | * Ignore default drives, because we create certain default |
| 257 | * drives unconditionally, then leave them unclaimed. Not the |
| 258 | * users fault. |
| 259 | * Ignore IF_VIRTIO, because it gets desugared into -device, |
| 260 | * so we can leave failing to -device. |
| 261 | * Ignore IF_NONE, because leaving unclaimed IF_NONE remains |
| 262 | * available for device_add is a feature. |
| 263 | */ |
| 264 | if (dinfo->is_default || dinfo->type == IF_VIRTIO |
| 265 | || dinfo->type == IF_NONE) { |
Markus Armbruster | a1b40bd | 2020-06-22 11:42:19 +0200 | [diff] [blame] | 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; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 276 | } |
| 277 | } |
| 278 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 279 | if (orphans) { |
| 280 | exit(1); |
| 281 | } |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 282 | } |
| 283 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 284 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 285 | { |
| 286 | return drive_get(type, |
| 287 | drive_index_to_bus_id(type, index), |
| 288 | drive_index_to_unit_id(type, index)); |
| 289 | } |
| 290 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 291 | int drive_get_max_bus(BlockInterfaceType type) |
| 292 | { |
| 293 | int max_bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 294 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 295 | DriveInfo *dinfo; |
| 296 | |
| 297 | max_bus = -1; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 298 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 299 | dinfo = blk_legacy_dinfo(blk); |
| 300 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 301 | max_bus = dinfo->bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 302 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 303 | } |
| 304 | return max_bus; |
| 305 | } |
| 306 | |
Markus Armbruster | 1383997 | 2011-01-28 11:21:37 +0100 | [diff] [blame] | 307 | /* Get a block device. This should only be used for single-drive devices |
| 308 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the |
| 309 | appropriate bus. */ |
| 310 | DriveInfo *drive_get_next(BlockInterfaceType type) |
| 311 | { |
| 312 | static int next_block_unit[IF_COUNT]; |
| 313 | |
| 314 | return drive_get(type, 0, next_block_unit[type]++); |
| 315 | } |
| 316 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 317 | static void bdrv_format_print(void *opaque, const char *name) |
| 318 | { |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 319 | qemu_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 320 | } |
| 321 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 322 | typedef struct { |
| 323 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 324 | BlockDriverState *bs; |
| 325 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 326 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 327 | 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] | 328 | { |
| 329 | if (!strcmp(buf, "ignore")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 330 | return BLOCKDEV_ON_ERROR_IGNORE; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 331 | } else if (!is_read && !strcmp(buf, "enospc")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 332 | return BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 333 | } else if (!strcmp(buf, "stop")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 334 | return BLOCKDEV_ON_ERROR_STOP; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 335 | } else if (!strcmp(buf, "report")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 336 | return BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 337 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 338 | error_setg(errp, "'%s' invalid %s error action", |
| 339 | buf, is_read ? "read" : "write"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 340 | return -1; |
| 341 | } |
| 342 | } |
| 343 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 344 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
| 345 | Error **errp) |
| 346 | { |
| 347 | const QListEntry *entry; |
| 348 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { |
| 349 | switch (qobject_type(entry->value)) { |
| 350 | |
| 351 | case QTYPE_QSTRING: { |
| 352 | unsigned long long length; |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 353 | const char *str = qstring_get_str(qobject_to(QString, |
| 354 | entry->value)); |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 355 | if (parse_uint_full(str, &length, 10) == 0 && |
| 356 | length > 0 && length <= UINT_MAX) { |
| 357 | block_acct_add_interval(stats, (unsigned) length); |
| 358 | } else { |
| 359 | error_setg(errp, "Invalid interval length: %s", str); |
| 360 | return false; |
| 361 | } |
| 362 | break; |
| 363 | } |
| 364 | |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 365 | case QTYPE_QNUM: { |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 366 | int64_t length = qnum_get_int(qobject_to(QNum, entry->value)); |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 367 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 368 | if (length > 0 && length <= UINT_MAX) { |
| 369 | block_acct_add_interval(stats, (unsigned) length); |
| 370 | } else { |
| 371 | error_setg(errp, "Invalid interval length: %" PRId64, length); |
| 372 | return false; |
| 373 | } |
| 374 | break; |
| 375 | } |
| 376 | |
| 377 | default: |
| 378 | error_setg(errp, "The specification of stats-intervals is invalid"); |
| 379 | return false; |
| 380 | } |
| 381 | } |
| 382 | return true; |
| 383 | } |
| 384 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 385 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 386 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 387 | /* All parameters but @opts are optional and may be set to NULL. */ |
| 388 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, |
| 389 | const char **throttling_group, ThrottleConfig *throttle_cfg, |
| 390 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) |
| 391 | { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 392 | Error *local_error = NULL; |
| 393 | const char *aio; |
| 394 | |
| 395 | if (bdrv_flags) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 396 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
| 397 | *bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 398 | } |
| 399 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 400 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
Aarushi Mehta | f80f267 | 2020-01-20 14:18:50 +0000 | [diff] [blame] | 401 | if (bdrv_parse_aio(aio, bdrv_flags) < 0) { |
| 402 | error_setg(errp, "invalid aio option"); |
| 403 | return; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 404 | } |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | /* disk I/O throttling */ |
| 409 | if (throttling_group) { |
| 410 | *throttling_group = qemu_opt_get(opts, "throttling.group"); |
| 411 | } |
| 412 | |
| 413 | if (throttle_cfg) { |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 414 | throttle_config_init(throttle_cfg); |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 415 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
| 416 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
| 417 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = |
| 418 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
| 419 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = |
| 420 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
| 421 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = |
| 422 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
| 423 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = |
| 424 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
| 425 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = |
| 426 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
| 427 | |
| 428 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = |
| 429 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 430 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = |
| 431 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 432 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = |
| 433 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 434 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = |
| 435 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 436 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = |
| 437 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 438 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = |
| 439 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
| 440 | |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 441 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
| 442 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); |
| 443 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = |
| 444 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); |
| 445 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = |
| 446 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); |
| 447 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = |
| 448 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); |
| 449 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = |
| 450 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); |
| 451 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = |
| 452 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); |
| 453 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 454 | throttle_cfg->op_size = |
| 455 | qemu_opt_get_number(opts, "throttling.iops-size", 0); |
| 456 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 457 | if (!throttle_is_valid(throttle_cfg, errp)) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 458 | return; |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | if (detect_zeroes) { |
| 463 | *detect_zeroes = |
Marc-André Lureau | f7abe0e | 2017-08-24 10:46:10 +0200 | [diff] [blame] | 464 | qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 465 | qemu_opt_get(opts, "detect-zeroes"), |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 466 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 467 | &local_error); |
| 468 | if (local_error) { |
| 469 | error_propagate(errp, local_error); |
| 470 | return; |
| 471 | } |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 472 | } |
| 473 | } |
| 474 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 475 | /* Takes the ownership of bs_opts */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 476 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
| 477 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 478 | { |
| 479 | const char *buf; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 480 | int bdrv_flags = 0; |
| 481 | int on_read_error, on_write_error; |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 482 | bool account_invalid, account_failed; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 483 | bool writethrough, read_only; |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 484 | BlockBackend *blk; |
Markus Armbruster | a0f1eab | 2014-09-12 21:26:21 +0200 | [diff] [blame] | 485 | BlockDriverState *bs; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 486 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 487 | int snapshot = 0; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 488 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 489 | QemuOpts *opts; |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 490 | QDict *interval_dict = NULL; |
| 491 | QList *interval_list = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 492 | const char *id; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 493 | BlockdevDetectZeroesOptions detect_zeroes = |
| 494 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; |
| 495 | const char *throttling_group = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 496 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 497 | /* Check common options by copying from bs_opts to opts, all other options |
| 498 | * stay in bs_opts for processing by bdrv_open(). */ |
| 499 | id = qdict_get_try_str(bs_opts, "id"); |
Markus Armbruster | c6ecec4 | 2020-07-07 18:05:35 +0200 | [diff] [blame] | 500 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, errp); |
| 501 | if (!opts) { |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 502 | goto err_no_opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 503 | } |
| 504 | |
Markus Armbruster | 668f62e | 2020-07-07 18:06:02 +0200 | [diff] [blame] | 505 | if (!qemu_opts_absorb_qdict(opts, bs_opts, errp)) { |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 506 | goto early_err; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 507 | } |
| 508 | |
| 509 | if (id) { |
| 510 | qdict_del(bs_opts, "id"); |
| 511 | } |
| 512 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 513 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 514 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 515 | |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 516 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
| 517 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); |
| 518 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 519 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
| 520 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 521 | id = qemu_opts_id(opts); |
| 522 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 523 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
| 524 | qdict_array_split(interval_dict, &interval_list); |
| 525 | |
| 526 | if (qdict_size(interval_dict) != 0) { |
| 527 | error_setg(errp, "Invalid option stats-intervals.%s", |
| 528 | qdict_first(interval_dict)->key); |
| 529 | goto early_err; |
| 530 | } |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 531 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 532 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
| 533 | &detect_zeroes, &error); |
| 534 | if (error) { |
| 535 | error_propagate(errp, error); |
| 536 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 537 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 538 | |
| 539 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 540 | if (is_help_option(buf)) { |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 541 | qemu_printf("Supported formats:"); |
Andrey Shinkevich | 9ac404c | 2019-03-07 16:33:58 +0300 | [diff] [blame] | 542 | bdrv_iterate_format(bdrv_format_print, NULL, false); |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 543 | qemu_printf("\nSupported formats (read-only):"); |
Andrey Shinkevich | 9ac404c | 2019-03-07 16:33:58 +0300 | [diff] [blame] | 544 | bdrv_iterate_format(bdrv_format_print, NULL, true); |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 545 | qemu_printf("\n"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 546 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 547 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 548 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 549 | if (qdict_haskey(bs_opts, "driver")) { |
| 550 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 551 | goto early_err; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 552 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 553 | qdict_put_str(bs_opts, "driver", buf); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 554 | } |
| 555 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 556 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 557 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 558 | on_write_error = parse_block_error_action(buf, 0, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 559 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 560 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 561 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 562 | } |
| 563 | } |
| 564 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 565 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 566 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 567 | on_read_error = parse_block_error_action(buf, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 568 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 569 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 570 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 571 | } |
| 572 | } |
| 573 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 574 | if (snapshot) { |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 575 | bdrv_flags |= BDRV_O_SNAPSHOT; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 576 | } |
| 577 | |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 578 | read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false); |
| 579 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 580 | /* init */ |
Kevin Wolf | 39c4ae9 | 2015-11-13 14:45:42 +0100 | [diff] [blame] | 581 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 582 | BlockBackendRootState *blk_rs; |
| 583 | |
Kevin Wolf | d861ab3 | 2019-04-25 14:25:10 +0200 | [diff] [blame] | 584 | blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 585 | blk_rs = blk_get_root_state(blk); |
| 586 | blk_rs->open_flags = bdrv_flags; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 587 | blk_rs->read_only = read_only; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 588 | blk_rs->detect_zeroes = detect_zeroes; |
| 589 | |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 590 | qobject_unref(bs_opts); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 591 | } else { |
| 592 | if (file && !*file) { |
| 593 | file = NULL; |
| 594 | } |
| 595 | |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 596 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 597 | * with other callers) rather than what we want as the real defaults. |
| 598 | * Apply the defaults here instead. */ |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 599 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 600 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 601 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, |
| 602 | read_only ? "on" : "off"); |
Kevin Wolf | 9384a44 | 2018-10-17 18:24:30 +0200 | [diff] [blame] | 603 | qdict_set_default_str(bs_opts, BDRV_OPT_AUTO_READ_ONLY, "on"); |
Kevin Wolf | 72e775c | 2016-03-15 14:34:37 +0100 | [diff] [blame] | 604 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 605 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 606 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 607 | bdrv_flags |= BDRV_O_INACTIVE; |
| 608 | } |
| 609 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 610 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 611 | if (!blk) { |
| 612 | goto err_no_bs_opts; |
| 613 | } |
| 614 | bs = blk_bs(blk); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 615 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 616 | bs->detect_zeroes = detect_zeroes; |
| 617 | |
Paolo Bonzini | 9caa6f3 | 2017-06-05 14:39:07 +0200 | [diff] [blame] | 618 | block_acct_setup(blk_get_stats(blk), account_invalid, account_failed); |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 619 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 620 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
| 621 | blk_unref(blk); |
| 622 | blk = NULL; |
| 623 | goto err_no_bs_opts; |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 624 | } |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 625 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 626 | |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 627 | /* disk I/O throttling */ |
| 628 | if (throttle_enabled(&cfg)) { |
| 629 | if (!throttling_group) { |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 630 | throttling_group = id; |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 631 | } |
| 632 | blk_io_limits_enable(blk, throttling_group); |
| 633 | blk_set_io_limits(blk, &cfg); |
| 634 | } |
| 635 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 636 | blk_set_enable_write_cache(blk, !writethrough); |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 637 | blk_set_on_error(blk, on_read_error, on_write_error); |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 638 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 639 | if (!monitor_add_blk(blk, id, errp)) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 640 | blk_unref(blk); |
| 641 | blk = NULL; |
| 642 | goto err_no_bs_opts; |
| 643 | } |
| 644 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 645 | err_no_bs_opts: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 646 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 647 | qobject_unref(interval_dict); |
| 648 | qobject_unref(interval_list); |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 649 | return blk; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 650 | |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 651 | early_err: |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 652 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 653 | qobject_unref(interval_dict); |
| 654 | qobject_unref(interval_list); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 655 | err_no_opts: |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 656 | qobject_unref(bs_opts); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 657 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 658 | } |
| 659 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 660 | /* Takes the ownership of bs_opts */ |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 661 | BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 662 | { |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 663 | int bdrv_flags = 0; |
| 664 | |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 665 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 666 | * with other callers) rather than what we want as the real defaults. |
| 667 | * Apply the defaults here instead. */ |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 668 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 669 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 670 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off"); |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 671 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 672 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 673 | bdrv_flags |= BDRV_O_INACTIVE; |
| 674 | } |
| 675 | |
Kevin Wolf | 74e1ae7 | 2016-09-20 20:48:52 +0200 | [diff] [blame] | 676 | return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 677 | } |
| 678 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 679 | void blockdev_close_all_bdrv_states(void) |
| 680 | { |
| 681 | BlockDriverState *bs, *next_bs; |
| 682 | |
| 683 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { |
| 684 | AioContext *ctx = bdrv_get_aio_context(bs); |
| 685 | |
| 686 | aio_context_acquire(ctx); |
| 687 | bdrv_unref(bs); |
| 688 | aio_context_release(ctx); |
| 689 | } |
| 690 | } |
| 691 | |
Max Reitz | 262b4e8 | 2016-03-16 19:54:41 +0100 | [diff] [blame] | 692 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
| 693 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) |
| 694 | { |
| 695 | return bs ? QTAILQ_NEXT(bs, monitor_list) |
| 696 | : QTAILQ_FIRST(&monitor_bdrv_states); |
| 697 | } |
| 698 | |
Markus Armbruster | c75d7f7 | 2020-07-07 18:05:41 +0200 | [diff] [blame] | 699 | 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] | 700 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 701 | { |
| 702 | const char *value; |
| 703 | |
| 704 | value = qemu_opt_get(opts, from); |
| 705 | if (value) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 706 | if (qemu_opt_find(opts, to)) { |
| 707 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " |
| 708 | "same time", to, from); |
Markus Armbruster | c75d7f7 | 2020-07-07 18:05:41 +0200 | [diff] [blame] | 709 | return false; |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 710 | } |
Jun Li | 20d6cd4 | 2014-09-24 13:45:27 +0800 | [diff] [blame] | 711 | } |
| 712 | |
| 713 | /* rename all items in opts */ |
| 714 | while ((value = qemu_opt_get(opts, from))) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 715 | qemu_opt_set(opts, to, value, &error_abort); |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 716 | qemu_opt_unset(opts, from); |
| 717 | } |
Markus Armbruster | c75d7f7 | 2020-07-07 18:05:41 +0200 | [diff] [blame] | 718 | return true; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 719 | } |
| 720 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 721 | QemuOptsList qemu_legacy_drive_opts = { |
| 722 | .name = "drive", |
| 723 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 724 | .desc = { |
| 725 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 726 | .name = "bus", |
| 727 | .type = QEMU_OPT_NUMBER, |
| 728 | .help = "bus number", |
| 729 | },{ |
| 730 | .name = "unit", |
| 731 | .type = QEMU_OPT_NUMBER, |
| 732 | .help = "unit number (i.e. lun for scsi)", |
| 733 | },{ |
| 734 | .name = "index", |
| 735 | .type = QEMU_OPT_NUMBER, |
| 736 | .help = "index number", |
| 737 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 738 | .name = "media", |
| 739 | .type = QEMU_OPT_STRING, |
| 740 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 741 | },{ |
| 742 | .name = "if", |
| 743 | .type = QEMU_OPT_STRING, |
| 744 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 745 | },{ |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 746 | .name = "file", |
| 747 | .type = QEMU_OPT_STRING, |
| 748 | .help = "file name", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 749 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 750 | |
| 751 | /* Options that are passed on, but have special semantics with -drive */ |
| 752 | { |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 753 | .name = BDRV_OPT_READ_ONLY, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 754 | .type = QEMU_OPT_BOOL, |
| 755 | .help = "open drive file as read-only", |
| 756 | },{ |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 757 | .name = "rerror", |
| 758 | .type = QEMU_OPT_STRING, |
| 759 | .help = "read error action", |
| 760 | },{ |
| 761 | .name = "werror", |
| 762 | .type = QEMU_OPT_STRING, |
| 763 | .help = "write error action", |
| 764 | },{ |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 765 | .name = "copy-on-read", |
| 766 | .type = QEMU_OPT_BOOL, |
| 767 | .help = "copy read data from backing file into image file", |
| 768 | }, |
| 769 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 770 | { /* end of list */ } |
| 771 | }, |
| 772 | }; |
| 773 | |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 774 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type, |
| 775 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 776 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 777 | const char *value; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 778 | BlockBackend *blk; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 779 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 780 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 781 | QemuOpts *legacy_opts; |
| 782 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 783 | BlockInterfaceType type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 784 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 785 | const char *werror, *rerror; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 786 | bool read_only = false; |
| 787 | bool copy_on_read; |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 788 | const char *filename; |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 789 | int i; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 790 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 791 | /* Change legacy command line options into QMP ones */ |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 792 | static const struct { |
| 793 | const char *from; |
| 794 | const char *to; |
| 795 | } opt_renames[] = { |
| 796 | { "iops", "throttling.iops-total" }, |
| 797 | { "iops_rd", "throttling.iops-read" }, |
| 798 | { "iops_wr", "throttling.iops-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 799 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 800 | { "bps", "throttling.bps-total" }, |
| 801 | { "bps_rd", "throttling.bps-read" }, |
| 802 | { "bps_wr", "throttling.bps-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 803 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 804 | { "iops_max", "throttling.iops-total-max" }, |
| 805 | { "iops_rd_max", "throttling.iops-read-max" }, |
| 806 | { "iops_wr_max", "throttling.iops-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 807 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 808 | { "bps_max", "throttling.bps-total-max" }, |
| 809 | { "bps_rd_max", "throttling.bps-read-max" }, |
| 810 | { "bps_wr_max", "throttling.bps-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 811 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 812 | { "iops_size", "throttling.iops-size" }, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 813 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 814 | { "group", "throttling.group" }, |
| 815 | |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 816 | { "readonly", BDRV_OPT_READ_ONLY }, |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 817 | }; |
| 818 | |
| 819 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { |
Markus Armbruster | 235e59c | 2020-07-07 18:05:42 +0200 | [diff] [blame] | 820 | if (!qemu_opt_rename(all_opts, opt_renames[i].from, |
Markus Armbruster | 668f62e | 2020-07-07 18:06:02 +0200 | [diff] [blame] | 821 | opt_renames[i].to, errp)) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 822 | return NULL; |
| 823 | } |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 824 | } |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 825 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 826 | value = qemu_opt_get(all_opts, "cache"); |
| 827 | if (value) { |
| 828 | int flags = 0; |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 829 | bool writethrough; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 830 | |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 831 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 832 | error_setg(errp, "invalid cache option"); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 833 | return NULL; |
| 834 | } |
| 835 | |
| 836 | /* Specific options take precedence */ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 837 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
| 838 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 839 | !writethrough, &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 840 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 841 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
| 842 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 843 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 844 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 845 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
| 846 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 847 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 848 | } |
| 849 | qemu_opt_unset(all_opts, "cache"); |
| 850 | } |
| 851 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 852 | /* Get a QDict for processing the options */ |
| 853 | bs_opts = qdict_new(); |
| 854 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 855 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 856 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
| 857 | &error_abort); |
Markus Armbruster | af175e8 | 2020-07-07 18:06:03 +0200 | [diff] [blame] | 858 | if (!qemu_opts_absorb_qdict(legacy_opts, bs_opts, errp)) { |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 859 | goto fail; |
| 860 | } |
| 861 | |
| 862 | /* Media type */ |
| 863 | value = qemu_opt_get(legacy_opts, "media"); |
| 864 | if (value) { |
| 865 | if (!strcmp(value, "disk")) { |
| 866 | media = MEDIA_DISK; |
| 867 | } else if (!strcmp(value, "cdrom")) { |
| 868 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 869 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 870 | } else { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 871 | error_setg(errp, "'%s' invalid media", value); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 872 | goto fail; |
| 873 | } |
| 874 | } |
| 875 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 876 | /* copy-on-read is disabled with a warning for read-only devices */ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 877 | 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] | 878 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 879 | |
| 880 | if (read_only && copy_on_read) { |
Alistair Francis | 3dc6f86 | 2017-07-12 06:57:41 -0700 | [diff] [blame] | 881 | warn_report("disabling copy-on-read on read-only drive"); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 882 | copy_on_read = false; |
| 883 | } |
| 884 | |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 885 | qdict_put_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); |
| 886 | 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] | 887 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 888 | /* Controller type */ |
| 889 | value = qemu_opt_get(legacy_opts, "if"); |
| 890 | if (value) { |
| 891 | for (type = 0; |
| 892 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 893 | type++) { |
| 894 | } |
| 895 | if (type == IF_COUNT) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 896 | error_setg(errp, "unsupported bus type '%s'", value); |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 897 | goto fail; |
| 898 | } |
| 899 | } else { |
| 900 | type = block_default_type; |
| 901 | } |
| 902 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 903 | /* Device address specified by bus/unit or index. |
| 904 | * If none was specified, try to find the first free one. */ |
| 905 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 906 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 907 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 908 | |
| 909 | max_devs = if_max_devs[type]; |
| 910 | |
| 911 | if (index != -1) { |
| 912 | if (bus_id != 0 || unit_id != -1) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 913 | error_setg(errp, "index cannot be used with bus and unit"); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 914 | goto fail; |
| 915 | } |
| 916 | bus_id = drive_index_to_bus_id(type, index); |
| 917 | unit_id = drive_index_to_unit_id(type, index); |
| 918 | } |
| 919 | |
| 920 | if (unit_id == -1) { |
| 921 | unit_id = 0; |
| 922 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 923 | unit_id++; |
| 924 | if (max_devs && unit_id >= max_devs) { |
| 925 | unit_id -= max_devs; |
| 926 | bus_id++; |
| 927 | } |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | if (max_devs && unit_id >= max_devs) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 932 | 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] | 933 | goto fail; |
| 934 | } |
| 935 | |
| 936 | if (drive_get(type, bus_id, unit_id) != NULL) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 937 | error_setg(errp, "drive with bus=%d, unit=%d (index=%d) exists", |
| 938 | bus_id, unit_id, index); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 939 | goto fail; |
| 940 | } |
| 941 | |
| 942 | /* no id supplied -> create one */ |
| 943 | if (qemu_opts_id(all_opts) == NULL) { |
| 944 | char *new_id; |
| 945 | const char *mediastr = ""; |
| 946 | if (type == IF_IDE || type == IF_SCSI) { |
| 947 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 948 | } |
| 949 | if (max_devs) { |
| 950 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 951 | mediastr, unit_id); |
| 952 | } else { |
| 953 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 954 | mediastr, unit_id); |
| 955 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 956 | qdict_put_str(bs_opts, "id", new_id); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 957 | g_free(new_id); |
| 958 | } |
| 959 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 960 | /* Add virtio block device */ |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 961 | if (type == IF_VIRTIO) { |
| 962 | QemuOpts *devopts; |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 963 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 964 | &error_abort); |
Laurent Vivier | 9db1d3a | 2021-03-23 16:53:04 +0000 | [diff] [blame] | 965 | qemu_opt_set(devopts, "driver", "virtio-blk", &error_abort); |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 966 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 967 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 968 | } |
| 969 | |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 970 | filename = qemu_opt_get(legacy_opts, "file"); |
| 971 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 972 | /* Check werror/rerror compatibility with if=... */ |
| 973 | werror = qemu_opt_get(legacy_opts, "werror"); |
| 974 | if (werror != NULL) { |
| 975 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && |
| 976 | type != IF_NONE) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 977 | error_setg(errp, "werror is not supported by this bus type"); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 978 | goto fail; |
| 979 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 980 | qdict_put_str(bs_opts, "werror", werror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 981 | } |
| 982 | |
| 983 | rerror = qemu_opt_get(legacy_opts, "rerror"); |
| 984 | if (rerror != NULL) { |
| 985 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && |
| 986 | type != IF_NONE) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 987 | error_setg(errp, "rerror is not supported by this bus type"); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 988 | goto fail; |
| 989 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 990 | qdict_put_str(bs_opts, "rerror", rerror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 991 | } |
| 992 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 993 | /* Actual block device init: Functionality shared with blockdev-add */ |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 994 | blk = blockdev_init(filename, bs_opts, errp); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 995 | bs_opts = NULL; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 996 | if (!blk) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 997 | goto fail; |
| 998 | } |
| 999 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1000 | /* Create legacy DriveInfo */ |
| 1001 | dinfo = g_malloc0(sizeof(*dinfo)); |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 1002 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1003 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1004 | dinfo->type = type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1005 | dinfo->bus = bus_id; |
| 1006 | dinfo->unit = unit_id; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1007 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1008 | blk_set_legacy_dinfo(blk, dinfo); |
| 1009 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 1010 | switch(type) { |
| 1011 | case IF_IDE: |
| 1012 | case IF_SCSI: |
| 1013 | case IF_XEN: |
| 1014 | case IF_NONE: |
| 1015 | dinfo->media_cd = media == MEDIA_CDROM; |
| 1016 | break; |
| 1017 | default: |
| 1018 | break; |
| 1019 | } |
| 1020 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1021 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 1022 | qemu_opts_del(legacy_opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 1023 | qobject_unref(bs_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1024 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 1025 | } |
| 1026 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1027 | static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) |
| 1028 | { |
| 1029 | BlockDriverState *bs; |
| 1030 | |
| 1031 | bs = bdrv_lookup_bs(name, name, errp); |
| 1032 | if (bs == NULL) { |
| 1033 | return NULL; |
| 1034 | } |
| 1035 | |
| 1036 | if (!bdrv_is_root_node(bs)) { |
| 1037 | error_setg(errp, "Need a root block node"); |
| 1038 | return NULL; |
| 1039 | } |
| 1040 | |
| 1041 | if (!bdrv_is_inserted(bs)) { |
| 1042 | error_setg(errp, "Device has no medium"); |
| 1043 | return NULL; |
| 1044 | } |
| 1045 | |
| 1046 | return bs; |
| 1047 | } |
| 1048 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1049 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1050 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1051 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1052 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1053 | list.value = action; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1054 | list.next = NULL; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1055 | qmp_transaction(&list, false, NULL, errp); |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1056 | } |
| 1057 | |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1058 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
| 1059 | bool has_node_name, const char *node_name, |
| 1060 | const char *snapshot_file, |
| 1061 | bool has_snapshot_node_name, |
| 1062 | const char *snapshot_node_name, |
Luiz Capitulino | 6106e24 | 2011-11-25 16:15:19 -0200 | [diff] [blame] | 1063 | bool has_format, const char *format, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1064 | bool has_mode, NewImageMode mode, Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1065 | { |
Alberto Garcia | a911e6a | 2015-10-26 14:27:14 +0200 | [diff] [blame] | 1066 | BlockdevSnapshotSync snapshot = { |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1067 | .has_device = has_device, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1068 | .device = (char *) device, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1069 | .has_node_name = has_node_name, |
| 1070 | .node_name = (char *) node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1071 | .snapshot_file = (char *) snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1072 | .has_snapshot_node_name = has_snapshot_node_name, |
| 1073 | .snapshot_node_name = (char *) snapshot_node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1074 | .has_format = has_format, |
| 1075 | .format = (char *) format, |
| 1076 | .has_mode = has_mode, |
| 1077 | .mode = mode, |
| 1078 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1079 | TransactionAction action = { |
| 1080 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1081 | .u.blockdev_snapshot_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1082 | }; |
| 1083 | blockdev_do_action(&action, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1084 | } |
| 1085 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1086 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
| 1087 | Error **errp) |
| 1088 | { |
| 1089 | BlockdevSnapshot snapshot_data = { |
| 1090 | .node = (char *) node, |
| 1091 | .overlay = (char *) overlay |
| 1092 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1093 | TransactionAction action = { |
| 1094 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1095 | .u.blockdev_snapshot.data = &snapshot_data, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1096 | }; |
| 1097 | blockdev_do_action(&action, errp); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1098 | } |
| 1099 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1100 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 1101 | const char *name, |
| 1102 | Error **errp) |
| 1103 | { |
| 1104 | BlockdevSnapshotInternal snapshot = { |
| 1105 | .device = (char *) device, |
| 1106 | .name = (char *) name |
| 1107 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1108 | TransactionAction action = { |
| 1109 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1110 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1111 | }; |
| 1112 | blockdev_do_action(&action, errp); |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1113 | } |
| 1114 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1115 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
| 1116 | bool has_id, |
| 1117 | const char *id, |
| 1118 | bool has_name, |
| 1119 | const char *name, |
| 1120 | Error **errp) |
| 1121 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1122 | BlockDriverState *bs; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1123 | AioContext *aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1124 | QEMUSnapshotInfo sn; |
| 1125 | Error *local_err = NULL; |
| 1126 | SnapshotInfo *info = NULL; |
| 1127 | int ret; |
| 1128 | |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1129 | bs = qmp_get_root_bs(device, errp); |
| 1130 | if (!bs) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1131 | return NULL; |
| 1132 | } |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1133 | aio_context = bdrv_get_aio_context(bs); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1134 | aio_context_acquire(aio_context); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1135 | |
| 1136 | if (!has_id) { |
| 1137 | id = NULL; |
| 1138 | } |
| 1139 | |
| 1140 | if (!has_name) { |
| 1141 | name = NULL; |
| 1142 | } |
| 1143 | |
| 1144 | if (!id && !name) { |
| 1145 | error_setg(errp, "Name or id must be provided"); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 1146 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1147 | } |
| 1148 | |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1149 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
| 1150 | goto out_aio_context; |
| 1151 | } |
| 1152 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1153 | 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] | 1154 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1155 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1156 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1157 | } |
| 1158 | if (!ret) { |
| 1159 | error_setg(errp, |
| 1160 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1161 | "device '%s'", |
| 1162 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1163 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1164 | } |
| 1165 | |
| 1166 | bdrv_snapshot_delete(bs, id, name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1167 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1168 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1169 | goto out_aio_context; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1170 | } |
| 1171 | |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1172 | aio_context_release(aio_context); |
| 1173 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 1174 | info = g_new0(SnapshotInfo, 1); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1175 | info->id = g_strdup(sn.id_str); |
| 1176 | info->name = g_strdup(sn.name); |
| 1177 | info->date_nsec = sn.date_nsec; |
| 1178 | info->date_sec = sn.date_sec; |
| 1179 | info->vm_state_size = sn.vm_state_size; |
| 1180 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1181 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
Pavel Dovgalyuk | b39847a | 2020-10-03 20:13:08 +0300 | [diff] [blame] | 1182 | if (sn.icount != -1ULL) { |
| 1183 | info->icount = sn.icount; |
| 1184 | info->has_icount = true; |
| 1185 | } |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1186 | |
| 1187 | return info; |
Stefan Hajnoczi | 4ef3982 | 2014-11-19 14:19:42 +0000 | [diff] [blame] | 1188 | |
| 1189 | out_aio_context: |
| 1190 | aio_context_release(aio_context); |
| 1191 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1192 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1193 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 1194 | /* New and old BlockDriverState structs for atomic group operations */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1195 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1196 | typedef struct BlkActionState BlkActionState; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1197 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1198 | /** |
| 1199 | * BlkActionOps: |
| 1200 | * Table of operations that define an Action. |
| 1201 | * |
| 1202 | * @instance_size: Size of state struct, in bytes. |
| 1203 | * @prepare: Prepare the work, must NOT be NULL. |
| 1204 | * @commit: Commit the changes, can be NULL. |
| 1205 | * @abort: Abort the changes on fail, can be NULL. |
| 1206 | * @clean: Clean up resources after all transaction actions have called |
| 1207 | * commit() or abort(). Can be NULL. |
| 1208 | * |
| 1209 | * Only prepare() may fail. In a single transaction, only one of commit() or |
| 1210 | * 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] | 1211 | */ |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1212 | typedef struct BlkActionOps { |
| 1213 | size_t instance_size; |
| 1214 | void (*prepare)(BlkActionState *common, Error **errp); |
| 1215 | void (*commit)(BlkActionState *common); |
| 1216 | void (*abort)(BlkActionState *common); |
| 1217 | void (*clean)(BlkActionState *common); |
| 1218 | } BlkActionOps; |
| 1219 | |
| 1220 | /** |
| 1221 | * BlkActionState: |
| 1222 | * Describes one Action's state within a Transaction. |
| 1223 | * |
| 1224 | * @action: QAPI-defined enum identifying which Action to perform. |
| 1225 | * @ops: Table of ActionOps this Action can perform. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1226 | * @block_job_txn: Transaction which this action belongs to. |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1227 | * @entry: List membership for all Actions in this Transaction. |
| 1228 | * |
| 1229 | * This structure must be arranged as first member in a subclassed type, |
| 1230 | * assuming that the compiler will also arrange it to the same offsets as the |
| 1231 | * base class. |
| 1232 | */ |
| 1233 | struct BlkActionState { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1234 | TransactionAction *action; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1235 | const BlkActionOps *ops; |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 1236 | JobTxn *block_job_txn; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1237 | TransactionProperties *txn_props; |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 1238 | QTAILQ_ENTRY(BlkActionState) entry; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1239 | }; |
| 1240 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1241 | /* internal snapshot private data */ |
| 1242 | typedef struct InternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1243 | BlkActionState common; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1244 | BlockDriverState *bs; |
| 1245 | QEMUSnapshotInfo sn; |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1246 | bool created; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1247 | } InternalSnapshotState; |
| 1248 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1249 | |
| 1250 | static int action_check_completion_mode(BlkActionState *s, Error **errp) |
| 1251 | { |
| 1252 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 1253 | error_setg(errp, |
| 1254 | "Action '%s' does not support Transaction property " |
| 1255 | "completion-mode = %s", |
Markus Armbruster | 977c736 | 2017-08-24 10:46:08 +0200 | [diff] [blame] | 1256 | TransactionActionKind_str(s->action->type), |
| 1257 | ActionCompletionMode_str(s->txn_props->completion_mode)); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1258 | return -1; |
| 1259 | } |
| 1260 | return 0; |
| 1261 | } |
| 1262 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1263 | static void internal_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1264 | Error **errp) |
| 1265 | { |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1266 | Error *local_err = NULL; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1267 | const char *device; |
| 1268 | const char *name; |
| 1269 | BlockDriverState *bs; |
| 1270 | QEMUSnapshotInfo old_sn, *sn; |
| 1271 | bool ret; |
| 1272 | qemu_timeval tv; |
| 1273 | BlockdevSnapshotInternal *internal; |
| 1274 | InternalSnapshotState *state; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1275 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1276 | int ret1; |
| 1277 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1278 | g_assert(common->action->type == |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1279 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1280 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1281 | state = DO_UPCAST(InternalSnapshotState, common, common); |
| 1282 | |
| 1283 | /* 1. parse input */ |
| 1284 | device = internal->device; |
| 1285 | name = internal->name; |
| 1286 | |
| 1287 | /* 2. check for validation */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1288 | if (action_check_completion_mode(common, errp) < 0) { |
| 1289 | return; |
| 1290 | } |
| 1291 | |
Kevin Wolf | 75dfd40 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1292 | bs = qmp_get_root_bs(device, errp); |
| 1293 | if (!bs) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1294 | return; |
| 1295 | } |
| 1296 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1297 | aio_context = bdrv_get_aio_context(bs); |
| 1298 | aio_context_acquire(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1299 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1300 | state->bs = bs; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1301 | |
| 1302 | /* Paired with .clean() */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1303 | bdrv_drained_begin(bs); |
| 1304 | |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1305 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1306 | goto out; |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1307 | } |
| 1308 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1309 | if (bdrv_is_read_only(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1310 | error_setg(errp, "Device '%s' is read only", device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1311 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1312 | } |
| 1313 | |
| 1314 | if (!bdrv_can_snapshot(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1315 | error_setg(errp, "Block format '%s' used by device '%s' " |
| 1316 | "does not support internal snapshots", |
| 1317 | bs->drv->format_name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1318 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1319 | } |
| 1320 | |
| 1321 | if (!strlen(name)) { |
| 1322 | error_setg(errp, "Name is empty"); |
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 | /* check whether a snapshot with name exist */ |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1327 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
| 1328 | &local_err); |
| 1329 | if (local_err) { |
| 1330 | error_propagate(errp, local_err); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1331 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1332 | } else if (ret) { |
| 1333 | error_setg(errp, |
| 1334 | "Snapshot with name '%s' already exists on device '%s'", |
| 1335 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1336 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1337 | } |
| 1338 | |
| 1339 | /* 3. take the snapshot */ |
| 1340 | sn = &state->sn; |
| 1341 | pstrcpy(sn->name, sizeof(sn->name), name); |
| 1342 | qemu_gettimeofday(&tv); |
| 1343 | sn->date_sec = tv.tv_sec; |
| 1344 | sn->date_nsec = tv.tv_usec * 1000; |
| 1345 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
Pavel Dovgalyuk | b39847a | 2020-10-03 20:13:08 +0300 | [diff] [blame] | 1346 | if (replay_mode != REPLAY_MODE_NONE) { |
| 1347 | sn->icount = replay_get_current_icount(); |
| 1348 | } else { |
| 1349 | sn->icount = -1ULL; |
| 1350 | } |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1351 | |
| 1352 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1353 | if (ret1 < 0) { |
| 1354 | error_setg_errno(errp, -ret1, |
| 1355 | "Failed to create snapshot '%s' on device '%s'", |
| 1356 | name, device); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1357 | goto out; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1358 | } |
| 1359 | |
| 1360 | /* 4. succeed, mark a snapshot is created */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1361 | state->created = true; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1362 | |
| 1363 | out: |
| 1364 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1365 | } |
| 1366 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1367 | static void internal_snapshot_abort(BlkActionState *common) |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1368 | { |
| 1369 | InternalSnapshotState *state = |
| 1370 | DO_UPCAST(InternalSnapshotState, common, common); |
| 1371 | BlockDriverState *bs = state->bs; |
| 1372 | QEMUSnapshotInfo *sn = &state->sn; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1373 | AioContext *aio_context; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1374 | Error *local_error = NULL; |
| 1375 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1376 | if (!state->created) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1377 | return; |
| 1378 | } |
| 1379 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1380 | aio_context = bdrv_get_aio_context(state->bs); |
| 1381 | aio_context_acquire(aio_context); |
| 1382 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1383 | 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] | 1384 | error_reportf_err(local_error, |
| 1385 | "Failed to delete snapshot with id '%s' and " |
| 1386 | "name '%s' on device '%s' in abort: ", |
| 1387 | sn->id_str, sn->name, |
| 1388 | bdrv_get_device_name(bs)); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1389 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1390 | |
| 1391 | aio_context_release(aio_context); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1392 | } |
| 1393 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1394 | static void internal_snapshot_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1395 | { |
| 1396 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, |
| 1397 | common, common); |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1398 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1399 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1400 | if (!state->bs) { |
| 1401 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1402 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1403 | |
| 1404 | aio_context = bdrv_get_aio_context(state->bs); |
| 1405 | aio_context_acquire(aio_context); |
| 1406 | |
| 1407 | bdrv_drained_end(state->bs); |
| 1408 | |
| 1409 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1410 | } |
| 1411 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1412 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1413 | typedef struct ExternalSnapshotState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1414 | BlkActionState common; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1415 | BlockDriverState *old_bs; |
| 1416 | BlockDriverState *new_bs; |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1417 | bool overlay_appended; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1418 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1419 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1420 | static void external_snapshot_prepare(BlkActionState *common, |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1421 | Error **errp) |
| 1422 | { |
Vladimir Sementsov-Ogievskiy | 934aee1 | 2021-02-02 15:49:44 +0300 | [diff] [blame] | 1423 | int ret; |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1424 | int flags = 0; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1425 | QDict *options = NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1426 | Error *local_err = NULL; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1427 | /* Device and node name of the image to generate the snapshot from */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1428 | const char *device; |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1429 | const char *node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1430 | /* Reference to the new image (for 'blockdev-snapshot') */ |
| 1431 | const char *snapshot_ref; |
| 1432 | /* File name of the new image (for 'blockdev-snapshot-sync') */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1433 | const char *new_image_file; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1434 | ExternalSnapshotState *state = |
| 1435 | DO_UPCAST(ExternalSnapshotState, common, common); |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1436 | TransactionAction *action = common->action; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1437 | AioContext *aio_context; |
Kevin Wolf | d29d3d1 | 2020-03-10 12:38:26 +0100 | [diff] [blame] | 1438 | uint64_t perm, shared; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1439 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1440 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
| 1441 | * purpose but a different set of parameters */ |
| 1442 | switch (action->type) { |
| 1443 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 1444 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1445 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1446 | device = s->node; |
| 1447 | node_name = s->node; |
| 1448 | new_image_file = NULL; |
| 1449 | snapshot_ref = s->overlay; |
| 1450 | } |
| 1451 | break; |
| 1452 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 1453 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1454 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1455 | device = s->has_device ? s->device : NULL; |
| 1456 | node_name = s->has_node_name ? s->node_name : NULL; |
| 1457 | new_image_file = s->snapshot_file; |
| 1458 | snapshot_ref = NULL; |
| 1459 | } |
| 1460 | break; |
| 1461 | default: |
| 1462 | g_assert_not_reached(); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1463 | } |
| 1464 | |
| 1465 | /* start processing */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1466 | if (action_check_completion_mode(common, errp) < 0) { |
| 1467 | return; |
| 1468 | } |
| 1469 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1470 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
| 1471 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1472 | return; |
| 1473 | } |
| 1474 | |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1475 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1476 | aio_context_acquire(aio_context); |
| 1477 | |
| 1478 | /* Paired with .clean() */ |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1479 | bdrv_drained_begin(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1480 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1481 | if (!bdrv_is_inserted(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1482 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1483 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1484 | } |
| 1485 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 1486 | if (bdrv_op_is_blocked(state->old_bs, |
| 1487 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1488 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1489 | } |
| 1490 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1491 | if (!bdrv_is_read_only(state->old_bs)) { |
| 1492 | if (bdrv_flush(state->old_bs)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1493 | error_setg(errp, QERR_IO_ERROR); |
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 | } |
| 1497 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1498 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1499 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1500 | const char *format = s->has_format ? s->format : "qcow2"; |
| 1501 | enum NewImageMode mode; |
| 1502 | const char *snapshot_node_name = |
| 1503 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1504 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1505 | if (node_name && !snapshot_node_name) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 1506 | error_setg(errp, "New overlay node-name missing"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1507 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1508 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1509 | |
| 1510 | if (snapshot_node_name && |
| 1511 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 1512 | error_setg(errp, "New overlay node-name already in use"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1513 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1514 | } |
| 1515 | |
| 1516 | flags = state->old_bs->open_flags; |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 1517 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_COPY_ON_READ); |
| 1518 | flags |= BDRV_O_NO_BACKING; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1519 | |
| 1520 | /* create new image w/backing file */ |
| 1521 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1522 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1523 | int64_t size = bdrv_getlength(state->old_bs); |
| 1524 | if (size < 0) { |
| 1525 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1526 | goto out; |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1527 | } |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 1528 | bdrv_refresh_filename(state->old_bs); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1529 | bdrv_img_create(new_image_file, format, |
| 1530 | state->old_bs->filename, |
| 1531 | state->old_bs->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 1532 | NULL, size, flags, false, &local_err); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1533 | if (local_err) { |
| 1534 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1535 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1536 | } |
| 1537 | } |
| 1538 | |
| 1539 | options = qdict_new(); |
Peter Maydell | d52e1a0 | 2018-11-01 16:30:37 +0000 | [diff] [blame] | 1540 | if (snapshot_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1541 | qdict_put_str(options, "node-name", snapshot_node_name); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1542 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1543 | qdict_put_str(options, "driver", format); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1544 | } |
| 1545 | |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1546 | state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags, |
| 1547 | errp); |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1548 | /* We will manually add the backing_hd field to the bs later */ |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1549 | if (!state->new_bs) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1550 | goto out; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1551 | } |
| 1552 | |
Kevin Wolf | d29d3d1 | 2020-03-10 12:38:26 +0100 | [diff] [blame] | 1553 | /* |
| 1554 | * Allow attaching a backing file to an overlay that's already in use only |
| 1555 | * if the parents don't assume that they are already seeing a valid image. |
| 1556 | * (Specifically, allow it as a mirror target, which is write-only access.) |
| 1557 | */ |
| 1558 | bdrv_get_cumulative_perm(state->new_bs, &perm, &shared); |
| 1559 | if (perm & BLK_PERM_CONSISTENT_READ) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1560 | error_setg(errp, "The overlay is already in use"); |
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 | |
Max Reitz | 7cc734a | 2019-06-12 18:34:46 +0200 | [diff] [blame] | 1564 | if (state->new_bs->drv->is_filter) { |
| 1565 | error_setg(errp, "Filters cannot be used as overlays"); |
| 1566 | goto out; |
| 1567 | } |
| 1568 | |
| 1569 | if (bdrv_cow_child(state->new_bs)) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1570 | error_setg(errp, "The overlay already has a backing image"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1571 | goto out; |
Alberto Garcia | 08b24cf | 2015-11-03 12:32:35 +0200 | [diff] [blame] | 1572 | } |
| 1573 | |
| 1574 | if (!state->new_bs->drv->supports_backing) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1575 | error_setg(errp, "The overlay does not support backing images"); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1576 | goto out; |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1577 | } |
| 1578 | |
Vladimir Sementsov-Ogievskiy | 934aee1 | 2021-02-02 15:49:44 +0300 | [diff] [blame] | 1579 | ret = bdrv_append(state->new_bs, state->old_bs, errp); |
| 1580 | if (ret < 0) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1581 | goto out; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1582 | } |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1583 | state->overlay_appended = true; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1584 | |
| 1585 | out: |
| 1586 | aio_context_release(aio_context); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1587 | } |
| 1588 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1589 | static void external_snapshot_commit(BlkActionState *common) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1590 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1591 | ExternalSnapshotState *state = |
| 1592 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1593 | AioContext *aio_context; |
| 1594 | |
| 1595 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1596 | aio_context_acquire(aio_context); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1597 | |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1598 | /* We don't need (or want) to use the transactional |
| 1599 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1600 | * 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] | 1601 | if (!qatomic_read(&state->old_bs->copy_on_read)) { |
Alberto Garcia | 1b57774 | 2018-11-12 16:00:39 +0200 | [diff] [blame] | 1602 | bdrv_reopen_set_read_only(state->old_bs, true, NULL); |
Kevin Wolf | 4c84498 | 2016-02-29 13:12:26 +0100 | [diff] [blame] | 1603 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1604 | |
| 1605 | aio_context_release(aio_context); |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1606 | } |
| 1607 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1608 | static void external_snapshot_abort(BlkActionState *common) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1609 | { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1610 | ExternalSnapshotState *state = |
| 1611 | DO_UPCAST(ExternalSnapshotState, common, common); |
| 1612 | if (state->new_bs) { |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1613 | if (state->overlay_appended) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1614 | AioContext *aio_context; |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1615 | AioContext *tmp_context; |
| 1616 | int ret; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1617 | |
| 1618 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1619 | aio_context_acquire(aio_context); |
| 1620 | |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1621 | bdrv_ref(state->old_bs); /* we can't let bdrv_set_backind_hd() |
| 1622 | close state->old_bs; we need it */ |
| 1623 | bdrv_set_backing_hd(state->new_bs, NULL, &error_abort); |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1624 | |
| 1625 | /* |
| 1626 | * The call to bdrv_set_backing_hd() above returns state->old_bs to |
| 1627 | * the main AioContext. As we're still going to be using it, return |
| 1628 | * it to the AioContext it was before. |
| 1629 | */ |
| 1630 | tmp_context = bdrv_get_aio_context(state->old_bs); |
| 1631 | if (aio_context != tmp_context) { |
| 1632 | aio_context_release(aio_context); |
| 1633 | aio_context_acquire(tmp_context); |
| 1634 | |
| 1635 | ret = bdrv_try_set_aio_context(state->old_bs, |
| 1636 | aio_context, NULL); |
| 1637 | assert(ret == 0); |
| 1638 | |
| 1639 | aio_context_release(tmp_context); |
| 1640 | aio_context_acquire(aio_context); |
| 1641 | } |
| 1642 | |
Kevin Wolf | 5fe31c2 | 2017-03-06 16:20:51 +0100 | [diff] [blame] | 1643 | bdrv_replace_node(state->new_bs, state->old_bs, &error_abort); |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1644 | bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */ |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1645 | |
| 1646 | aio_context_release(aio_context); |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1647 | } |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1648 | } |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1649 | } |
| 1650 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1651 | static void external_snapshot_clean(BlkActionState *common) |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1652 | { |
| 1653 | ExternalSnapshotState *state = |
| 1654 | DO_UPCAST(ExternalSnapshotState, common, common); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1655 | AioContext *aio_context; |
| 1656 | |
| 1657 | if (!state->old_bs) { |
| 1658 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1659 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1660 | |
| 1661 | aio_context = bdrv_get_aio_context(state->old_bs); |
| 1662 | aio_context_acquire(aio_context); |
| 1663 | |
| 1664 | bdrv_drained_end(state->old_bs); |
| 1665 | bdrv_unref(state->new_bs); |
| 1666 | |
| 1667 | aio_context_release(aio_context); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1668 | } |
| 1669 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1670 | typedef struct DriveBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1671 | BlkActionState common; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1672 | BlockDriverState *bs; |
| 1673 | BlockJob *job; |
| 1674 | } DriveBackupState; |
| 1675 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1676 | static BlockJob *do_backup_common(BackupCommon *backup, |
| 1677 | BlockDriverState *bs, |
| 1678 | BlockDriverState *target_bs, |
| 1679 | AioContext *aio_context, |
| 1680 | JobTxn *txn, Error **errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1681 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1682 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1683 | { |
| 1684 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
| 1685 | DriveBackup *backup; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1686 | BlockDriverState *bs; |
| 1687 | BlockDriverState *target_bs; |
| 1688 | BlockDriverState *source = NULL; |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1689 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1690 | AioContext *old_context; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1691 | QDict *options; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1692 | Error *local_err = NULL; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1693 | int flags; |
| 1694 | int64_t size; |
| 1695 | bool set_backing_hd = false; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1696 | int ret; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1697 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1698 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1699 | backup = common->action->u.drive_backup.data; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1700 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1701 | if (!backup->has_mode) { |
| 1702 | backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1703 | } |
| 1704 | |
Vladimir Sementsov-Ogievskiy | 85c9d13 | 2019-06-18 17:08:04 +0300 | [diff] [blame] | 1705 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1706 | if (!bs) { |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1707 | return; |
| 1708 | } |
| 1709 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1710 | if (!bs->drv) { |
| 1711 | error_setg(errp, "Device has no medium"); |
| 1712 | return; |
| 1713 | } |
| 1714 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1715 | aio_context = bdrv_get_aio_context(bs); |
| 1716 | aio_context_acquire(aio_context); |
| 1717 | |
| 1718 | /* Paired with .clean() */ |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1719 | bdrv_drained_begin(bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1720 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1721 | if (!backup->has_format) { |
| 1722 | backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ? |
| 1723 | NULL : (char *) bs->drv->format_name; |
| 1724 | } |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1725 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1726 | /* Early check to avoid creating target */ |
| 1727 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
| 1728 | goto out; |
| 1729 | } |
| 1730 | |
| 1731 | flags = bs->open_flags | BDRV_O_RDWR; |
| 1732 | |
| 1733 | /* |
| 1734 | * See if we have a backing HD we can use to create our new image |
| 1735 | * on top of. |
| 1736 | */ |
| 1737 | if (backup->sync == MIRROR_SYNC_MODE_TOP) { |
Max Reitz | 2b088c6 | 2019-06-12 17:46:45 +0200 | [diff] [blame] | 1738 | /* |
| 1739 | * Backup will not replace the source by the target, so none |
| 1740 | * of the filters skipped here will be removed (in contrast to |
| 1741 | * mirror). Therefore, we can skip all of them when looking |
| 1742 | * for the first COW relationship. |
| 1743 | */ |
| 1744 | source = bdrv_cow_bs(bdrv_skip_filters(bs)); |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1745 | if (!source) { |
| 1746 | backup->sync = MIRROR_SYNC_MODE_FULL; |
| 1747 | } |
| 1748 | } |
| 1749 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
| 1750 | source = bs; |
| 1751 | flags |= BDRV_O_NO_BACKING; |
| 1752 | set_backing_hd = true; |
| 1753 | } |
| 1754 | |
| 1755 | size = bdrv_getlength(bs); |
| 1756 | if (size < 0) { |
| 1757 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
| 1758 | goto out; |
| 1759 | } |
| 1760 | |
| 1761 | if (backup->mode != NEW_IMAGE_MODE_EXISTING) { |
| 1762 | assert(backup->format); |
| 1763 | if (source) { |
Max Reitz | 2b088c6 | 2019-06-12 17:46:45 +0200 | [diff] [blame] | 1764 | /* Implicit filters should not appear in the filename */ |
| 1765 | BlockDriverState *explicit_backing = |
| 1766 | bdrv_skip_implicit_filters(source); |
| 1767 | |
| 1768 | bdrv_refresh_filename(explicit_backing); |
| 1769 | bdrv_img_create(backup->target, backup->format, |
| 1770 | explicit_backing->filename, |
| 1771 | explicit_backing->drv->format_name, NULL, |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1772 | size, flags, false, &local_err); |
| 1773 | } else { |
| 1774 | bdrv_img_create(backup->target, backup->format, NULL, NULL, NULL, |
| 1775 | size, flags, false, &local_err); |
| 1776 | } |
| 1777 | } |
| 1778 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1779 | if (local_err) { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1780 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1781 | goto out; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1782 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1783 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1784 | options = qdict_new(); |
| 1785 | qdict_put_str(options, "discard", "unmap"); |
| 1786 | qdict_put_str(options, "detect-zeroes", "unmap"); |
| 1787 | if (backup->format) { |
| 1788 | qdict_put_str(options, "driver", backup->format); |
| 1789 | } |
| 1790 | |
| 1791 | target_bs = bdrv_open(backup->target, NULL, options, flags, errp); |
| 1792 | if (!target_bs) { |
| 1793 | goto out; |
| 1794 | } |
| 1795 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1796 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 1797 | old_context = bdrv_get_aio_context(target_bs); |
| 1798 | aio_context_release(aio_context); |
| 1799 | aio_context_acquire(old_context); |
| 1800 | |
| 1801 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
| 1802 | if (ret < 0) { |
| 1803 | bdrv_unref(target_bs); |
| 1804 | aio_context_release(old_context); |
| 1805 | return; |
| 1806 | } |
| 1807 | |
| 1808 | aio_context_release(old_context); |
| 1809 | aio_context_acquire(aio_context); |
| 1810 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1811 | if (set_backing_hd) { |
Vladimir Sementsov-Ogievskiy | 5a11a1c | 2021-02-02 15:49:46 +0300 | [diff] [blame] | 1812 | if (bdrv_set_backing_hd(target_bs, source, errp) < 0) { |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1813 | goto unref; |
| 1814 | } |
| 1815 | } |
| 1816 | |
| 1817 | state->bs = bs; |
| 1818 | |
| 1819 | state->job = do_backup_common(qapi_DriveBackup_base(backup), |
| 1820 | bs, target_bs, aio_context, |
| 1821 | common->block_job_txn, errp); |
| 1822 | |
| 1823 | unref: |
| 1824 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1825 | out: |
| 1826 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1827 | } |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1828 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1829 | static void drive_backup_commit(BlkActionState *common) |
| 1830 | { |
| 1831 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1832 | AioContext *aio_context; |
| 1833 | |
| 1834 | aio_context = bdrv_get_aio_context(state->bs); |
| 1835 | aio_context_acquire(aio_context); |
| 1836 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1837 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 1838 | job_start(&state->job->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1839 | |
| 1840 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1841 | } |
| 1842 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1843 | static void drive_backup_abort(BlkActionState *common) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1844 | { |
| 1845 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1846 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1847 | if (state->job) { |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1848 | AioContext *aio_context; |
| 1849 | |
| 1850 | aio_context = bdrv_get_aio_context(state->bs); |
| 1851 | aio_context_acquire(aio_context); |
| 1852 | |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 1853 | job_cancel_sync(&state->job->job); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1854 | |
| 1855 | aio_context_release(aio_context); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1856 | } |
| 1857 | } |
| 1858 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1859 | static void drive_backup_clean(BlkActionState *common) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1860 | { |
| 1861 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1862 | AioContext *aio_context; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1863 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1864 | if (!state->bs) { |
| 1865 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1866 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1867 | |
| 1868 | aio_context = bdrv_get_aio_context(state->bs); |
| 1869 | aio_context_acquire(aio_context); |
| 1870 | |
| 1871 | bdrv_drained_end(state->bs); |
| 1872 | |
| 1873 | aio_context_release(aio_context); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1874 | } |
| 1875 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1876 | typedef struct BlockdevBackupState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1877 | BlkActionState common; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1878 | BlockDriverState *bs; |
| 1879 | BlockJob *job; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1880 | } BlockdevBackupState; |
| 1881 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1882 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1883 | { |
| 1884 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
| 1885 | BlockdevBackup *backup; |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1886 | BlockDriverState *bs; |
| 1887 | BlockDriverState *target_bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1888 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1889 | AioContext *old_context; |
| 1890 | int ret; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1891 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 1892 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1893 | backup = common->action->u.blockdev_backup.data; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1894 | |
Vladimir Sementsov-Ogievskiy | 930fe17 | 2018-07-02 15:46:29 -0400 | [diff] [blame] | 1895 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1896 | if (!bs) { |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1897 | return; |
| 1898 | } |
| 1899 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1900 | target_bs = bdrv_lookup_bs(backup->target, backup->target, errp); |
| 1901 | if (!target_bs) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1902 | return; |
| 1903 | } |
| 1904 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1905 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1906 | aio_context = bdrv_get_aio_context(bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1907 | old_context = bdrv_get_aio_context(target_bs); |
| 1908 | aio_context_acquire(old_context); |
| 1909 | |
| 1910 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
| 1911 | if (ret < 0) { |
| 1912 | aio_context_release(old_context); |
| 1913 | return; |
| 1914 | } |
| 1915 | |
| 1916 | aio_context_release(old_context); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1917 | aio_context_acquire(aio_context); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1918 | state->bs = bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1919 | |
| 1920 | /* Paired with .clean() */ |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1921 | bdrv_drained_begin(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1922 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1923 | state->job = do_backup_common(qapi_BlockdevBackup_base(backup), |
| 1924 | bs, target_bs, aio_context, |
| 1925 | common->block_job_txn, errp); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1926 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1927 | aio_context_release(aio_context); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1928 | } |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1929 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1930 | static void blockdev_backup_commit(BlkActionState *common) |
| 1931 | { |
| 1932 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1933 | AioContext *aio_context; |
| 1934 | |
| 1935 | aio_context = bdrv_get_aio_context(state->bs); |
| 1936 | aio_context_acquire(aio_context); |
| 1937 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1938 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 1939 | job_start(&state->job->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1940 | |
| 1941 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1942 | } |
| 1943 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1944 | static void blockdev_backup_abort(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1945 | { |
| 1946 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1947 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1948 | if (state->job) { |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1949 | AioContext *aio_context; |
| 1950 | |
| 1951 | aio_context = bdrv_get_aio_context(state->bs); |
| 1952 | aio_context_acquire(aio_context); |
| 1953 | |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 1954 | job_cancel_sync(&state->job->job); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1955 | |
| 1956 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1957 | } |
| 1958 | } |
| 1959 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1960 | static void blockdev_backup_clean(BlkActionState *common) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1961 | { |
| 1962 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1963 | AioContext *aio_context; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1964 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1965 | if (!state->bs) { |
| 1966 | return; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1967 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1968 | |
| 1969 | aio_context = bdrv_get_aio_context(state->bs); |
| 1970 | aio_context_acquire(aio_context); |
| 1971 | |
| 1972 | bdrv_drained_end(state->bs); |
| 1973 | |
| 1974 | aio_context_release(aio_context); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1975 | } |
| 1976 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1977 | typedef struct BlockDirtyBitmapState { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1978 | BlkActionState common; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1979 | BdrvDirtyBitmap *bitmap; |
| 1980 | BlockDriverState *bs; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1981 | HBitmap *backup; |
| 1982 | bool prepared; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1983 | bool was_enabled; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1984 | } BlockDirtyBitmapState; |
| 1985 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 1986 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1987 | Error **errp) |
| 1988 | { |
| 1989 | Error *local_err = NULL; |
| 1990 | BlockDirtyBitmapAdd *action; |
| 1991 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 1992 | common, common); |
| 1993 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1994 | if (action_check_completion_mode(common, errp) < 0) { |
| 1995 | return; |
| 1996 | } |
| 1997 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1998 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1999 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
| 2000 | qmp_block_dirty_bitmap_add(action->node, action->name, |
| 2001 | action->has_granularity, action->granularity, |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 2002 | action->has_persistent, action->persistent, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2003 | action->has_disabled, action->disabled, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2004 | &local_err); |
| 2005 | |
| 2006 | if (!local_err) { |
| 2007 | state->prepared = true; |
| 2008 | } else { |
| 2009 | error_propagate(errp, local_err); |
| 2010 | } |
| 2011 | } |
| 2012 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2013 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2014 | { |
| 2015 | BlockDirtyBitmapAdd *action; |
| 2016 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2017 | common, common); |
| 2018 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2019 | action = common->action->u.block_dirty_bitmap_add.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2020 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
| 2021 | * then the node reference and bitmap name must have been valid. |
| 2022 | */ |
| 2023 | if (state->prepared) { |
| 2024 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); |
| 2025 | } |
| 2026 | } |
| 2027 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2028 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2029 | Error **errp) |
| 2030 | { |
| 2031 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2032 | common, common); |
| 2033 | BlockDirtyBitmap *action; |
| 2034 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2035 | if (action_check_completion_mode(common, errp) < 0) { |
| 2036 | return; |
| 2037 | } |
| 2038 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2039 | action = common->action->u.block_dirty_bitmap_clear.data; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2040 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2041 | action->name, |
| 2042 | &state->bs, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2043 | errp); |
| 2044 | if (!state->bitmap) { |
| 2045 | return; |
| 2046 | } |
| 2047 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 2048 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_DEFAULT, errp)) { |
Vladimir Sementsov-Ogievskiy | d6883bc | 2017-06-28 15:05:10 +0300 | [diff] [blame] | 2049 | return; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2050 | } |
| 2051 | |
| 2052 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2053 | } |
| 2054 | |
Vladimir Sementsov-Ogievskiy | 5c4cf8b | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2055 | static void block_dirty_bitmap_restore(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2056 | { |
| 2057 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2058 | common, common); |
| 2059 | |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 2060 | if (state->backup) { |
Vladimir Sementsov-Ogievskiy | 56bd662 | 2018-10-29 16:23:14 -0400 | [diff] [blame] | 2061 | bdrv_restore_dirty_bitmap(state->bitmap, state->backup); |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 2062 | } |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2063 | } |
| 2064 | |
Vladimir Sementsov-Ogievskiy | 5c4cf8b | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2065 | static void block_dirty_bitmap_free_backup(BlkActionState *common) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2066 | { |
| 2067 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2068 | common, common); |
| 2069 | |
| 2070 | hbitmap_free(state->backup); |
| 2071 | } |
| 2072 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2073 | static void block_dirty_bitmap_enable_prepare(BlkActionState *common, |
| 2074 | Error **errp) |
| 2075 | { |
| 2076 | BlockDirtyBitmap *action; |
| 2077 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2078 | common, common); |
| 2079 | |
| 2080 | if (action_check_completion_mode(common, errp) < 0) { |
| 2081 | return; |
| 2082 | } |
| 2083 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2084 | action = common->action->u.block_dirty_bitmap_enable.data; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2085 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2086 | action->name, |
| 2087 | NULL, |
| 2088 | errp); |
| 2089 | if (!state->bitmap) { |
| 2090 | return; |
| 2091 | } |
| 2092 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 2093 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | b053bb5 | 2018-10-29 16:23:16 -0400 | [diff] [blame] | 2094 | return; |
| 2095 | } |
| 2096 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2097 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 2098 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 2099 | } |
| 2100 | |
| 2101 | static void block_dirty_bitmap_enable_abort(BlkActionState *common) |
| 2102 | { |
| 2103 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2104 | common, common); |
| 2105 | |
| 2106 | if (!state->was_enabled) { |
| 2107 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 2108 | } |
| 2109 | } |
| 2110 | |
| 2111 | static void block_dirty_bitmap_disable_prepare(BlkActionState *common, |
| 2112 | Error **errp) |
| 2113 | { |
| 2114 | BlockDirtyBitmap *action; |
| 2115 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2116 | common, common); |
| 2117 | |
| 2118 | if (action_check_completion_mode(common, errp) < 0) { |
| 2119 | return; |
| 2120 | } |
| 2121 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2122 | action = common->action->u.block_dirty_bitmap_disable.data; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2123 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 2124 | action->name, |
| 2125 | NULL, |
| 2126 | errp); |
| 2127 | if (!state->bitmap) { |
| 2128 | return; |
| 2129 | } |
| 2130 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 2131 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | b053bb5 | 2018-10-29 16:23:16 -0400 | [diff] [blame] | 2132 | return; |
| 2133 | } |
| 2134 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2135 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 2136 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 2137 | } |
| 2138 | |
| 2139 | static void block_dirty_bitmap_disable_abort(BlkActionState *common) |
| 2140 | { |
| 2141 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2142 | common, common); |
| 2143 | |
| 2144 | if (state->was_enabled) { |
| 2145 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 2146 | } |
| 2147 | } |
| 2148 | |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2149 | static void block_dirty_bitmap_merge_prepare(BlkActionState *common, |
| 2150 | Error **errp) |
| 2151 | { |
| 2152 | BlockDirtyBitmapMerge *action; |
| 2153 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2154 | common, common); |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2155 | |
| 2156 | if (action_check_completion_mode(common, errp) < 0) { |
| 2157 | return; |
| 2158 | } |
| 2159 | |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2160 | action = common->action->u.block_dirty_bitmap_merge.data; |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2161 | |
Eric Blake | c6996cf | 2020-05-12 20:16:43 -0500 | [diff] [blame] | 2162 | state->bitmap = block_dirty_bitmap_merge(action->node, action->target, |
| 2163 | action->bitmaps, &state->backup, |
| 2164 | errp); |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2165 | } |
| 2166 | |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2167 | static void block_dirty_bitmap_remove_prepare(BlkActionState *common, |
| 2168 | Error **errp) |
| 2169 | { |
| 2170 | BlockDirtyBitmap *action; |
| 2171 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2172 | common, common); |
| 2173 | |
| 2174 | if (action_check_completion_mode(common, errp) < 0) { |
| 2175 | return; |
| 2176 | } |
| 2177 | |
| 2178 | action = common->action->u.block_dirty_bitmap_remove.data; |
| 2179 | |
Eric Blake | c6996cf | 2020-05-12 20:16:43 -0500 | [diff] [blame] | 2180 | state->bitmap = block_dirty_bitmap_remove(action->node, action->name, |
| 2181 | false, &state->bs, errp); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2182 | if (state->bitmap) { |
| 2183 | bdrv_dirty_bitmap_skip_store(state->bitmap, true); |
| 2184 | bdrv_dirty_bitmap_set_busy(state->bitmap, true); |
| 2185 | } |
| 2186 | } |
| 2187 | |
| 2188 | static void block_dirty_bitmap_remove_abort(BlkActionState *common) |
| 2189 | { |
| 2190 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2191 | common, common); |
| 2192 | |
| 2193 | if (state->bitmap) { |
| 2194 | bdrv_dirty_bitmap_skip_store(state->bitmap, false); |
| 2195 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); |
| 2196 | } |
| 2197 | } |
| 2198 | |
| 2199 | static void block_dirty_bitmap_remove_commit(BlkActionState *common) |
| 2200 | { |
| 2201 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, |
| 2202 | common, common); |
| 2203 | |
| 2204 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); |
Vladimir Sementsov-Ogievskiy | 5deb6cb | 2019-09-16 17:19:09 +0300 | [diff] [blame] | 2205 | bdrv_release_dirty_bitmap(state->bitmap); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2206 | } |
| 2207 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2208 | static void abort_prepare(BlkActionState *common, Error **errp) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2209 | { |
| 2210 | error_setg(errp, "Transaction aborted using Abort action"); |
| 2211 | } |
| 2212 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2213 | static void abort_commit(BlkActionState *common) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2214 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 2215 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2216 | } |
| 2217 | |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2218 | static const BlkActionOps actions[] = { |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2219 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
| 2220 | .instance_size = sizeof(ExternalSnapshotState), |
| 2221 | .prepare = external_snapshot_prepare, |
| 2222 | .commit = external_snapshot_commit, |
| 2223 | .abort = external_snapshot_abort, |
Alberto Garcia | 4ad6f3d | 2015-11-13 15:00:24 +0200 | [diff] [blame] | 2224 | .clean = external_snapshot_clean, |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 2225 | }, |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2226 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2227 | .instance_size = sizeof(ExternalSnapshotState), |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2228 | .prepare = external_snapshot_prepare, |
| 2229 | .commit = external_snapshot_commit, |
| 2230 | .abort = external_snapshot_abort, |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 2231 | .clean = external_snapshot_clean, |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2232 | }, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2233 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
| 2234 | .instance_size = sizeof(DriveBackupState), |
| 2235 | .prepare = drive_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2236 | .commit = drive_backup_commit, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2237 | .abort = drive_backup_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2238 | .clean = drive_backup_clean, |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 2239 | }, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2240 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
| 2241 | .instance_size = sizeof(BlockdevBackupState), |
| 2242 | .prepare = blockdev_backup_prepare, |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2243 | .commit = blockdev_backup_commit, |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 2244 | .abort = blockdev_backup_abort, |
| 2245 | .clean = blockdev_backup_clean, |
| 2246 | }, |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2247 | [TRANSACTION_ACTION_KIND_ABORT] = { |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2248 | .instance_size = sizeof(BlkActionState), |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2249 | .prepare = abort_prepare, |
| 2250 | .commit = abort_commit, |
| 2251 | }, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2252 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
| 2253 | .instance_size = sizeof(InternalSnapshotState), |
| 2254 | .prepare = internal_snapshot_prepare, |
| 2255 | .abort = internal_snapshot_abort, |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 2256 | .clean = internal_snapshot_clean, |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 2257 | }, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 2258 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
| 2259 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2260 | .prepare = block_dirty_bitmap_add_prepare, |
| 2261 | .abort = block_dirty_bitmap_add_abort, |
| 2262 | }, |
| 2263 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { |
| 2264 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2265 | .prepare = block_dirty_bitmap_clear_prepare, |
Vladimir Sementsov-Ogievskiy | 5c4cf8b | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2266 | .commit = block_dirty_bitmap_free_backup, |
| 2267 | .abort = block_dirty_bitmap_restore, |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2268 | }, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2269 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ENABLE] = { |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2270 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2271 | .prepare = block_dirty_bitmap_enable_prepare, |
| 2272 | .abort = block_dirty_bitmap_enable_abort, |
| 2273 | }, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2274 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_DISABLE] = { |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2275 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2276 | .prepare = block_dirty_bitmap_disable_prepare, |
| 2277 | .abort = block_dirty_bitmap_disable_abort, |
John Snow | 66da04d | 2018-09-06 09:02:25 -0400 | [diff] [blame] | 2278 | }, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 2279 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_MERGE] = { |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2280 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2281 | .prepare = block_dirty_bitmap_merge_prepare, |
| 2282 | .commit = block_dirty_bitmap_free_backup, |
| 2283 | .abort = block_dirty_bitmap_restore, |
| 2284 | }, |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2285 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_REMOVE] = { |
| 2286 | .instance_size = sizeof(BlockDirtyBitmapState), |
| 2287 | .prepare = block_dirty_bitmap_remove_prepare, |
| 2288 | .commit = block_dirty_bitmap_remove_commit, |
| 2289 | .abort = block_dirty_bitmap_remove_abort, |
| 2290 | }, |
John Snow | 66da04d | 2018-09-06 09:02:25 -0400 | [diff] [blame] | 2291 | /* Where are transactions for MIRROR, COMMIT and STREAM? |
| 2292 | * Although these blockjobs use transaction callbacks like the backup job, |
| 2293 | * these jobs do not necessarily adhere to transaction semantics. |
| 2294 | * These jobs may not fully undo all of their actions on abort, nor do they |
| 2295 | * necessarily work in transactions with more than one job in them. |
| 2296 | */ |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2297 | }; |
| 2298 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2299 | /** |
| 2300 | * Allocate a TransactionProperties structure if necessary, and fill |
| 2301 | * that structure with desired defaults if they are unset. |
| 2302 | */ |
| 2303 | static TransactionProperties *get_transaction_properties( |
| 2304 | TransactionProperties *props) |
| 2305 | { |
| 2306 | if (!props) { |
| 2307 | props = g_new0(TransactionProperties, 1); |
| 2308 | } |
| 2309 | |
| 2310 | if (!props->has_completion_mode) { |
| 2311 | props->has_completion_mode = true; |
| 2312 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; |
| 2313 | } |
| 2314 | |
| 2315 | return props; |
| 2316 | } |
| 2317 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2318 | /* |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2319 | * 'Atomic' group operations. The operations are performed as a set, and if |
| 2320 | * any fail then we roll back all operations in the group. |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2321 | */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2322 | void qmp_transaction(TransactionActionList *dev_list, |
| 2323 | bool has_props, |
| 2324 | struct TransactionProperties *props, |
| 2325 | Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2326 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2327 | TransactionActionList *dev_entry = dev_list; |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2328 | JobTxn *block_job_txn = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2329 | BlkActionState *state, *next; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 2330 | Error *local_err = NULL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2331 | |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2332 | QTAILQ_HEAD(, BlkActionState) snap_bdrv_states; |
| 2333 | QTAILQ_INIT(&snap_bdrv_states); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2334 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2335 | /* Does this transaction get canceled as a group on failure? |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2336 | * If not, we don't really need to make a JobTxn. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2337 | */ |
| 2338 | props = get_transaction_properties(props); |
| 2339 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2340 | block_job_txn = job_txn_new(); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2341 | } |
| 2342 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2343 | /* drain all i/o before any operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2344 | bdrv_drain_all(); |
| 2345 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2346 | /* 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] | 2347 | while (NULL != dev_entry) { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 2348 | TransactionAction *dev_info = NULL; |
John Snow | 50f43f0 | 2015-11-05 18:13:09 -0500 | [diff] [blame] | 2349 | const BlkActionOps *ops; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2350 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2351 | dev_info = dev_entry->value; |
| 2352 | dev_entry = dev_entry->next; |
| 2353 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2354 | assert(dev_info->type < ARRAY_SIZE(actions)); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2355 | |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2356 | ops = &actions[dev_info->type]; |
Max Reitz | aa3fe71 | 2013-09-12 14:57:27 +0200 | [diff] [blame] | 2357 | assert(ops->instance_size > 0); |
| 2358 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2359 | state = g_malloc0(ops->instance_size); |
| 2360 | state->ops = ops; |
| 2361 | state->action = dev_info; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2362 | state->block_job_txn = block_job_txn; |
| 2363 | state->txn_props = props; |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2364 | QTAILQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2365 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2366 | state->ops->prepare(state, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2367 | if (local_err) { |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2368 | error_propagate(errp, local_err); |
| 2369 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2370 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2371 | } |
| 2372 | |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2373 | QTAILQ_FOREACH(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | f9ea81e | 2013-06-24 17:13:16 +0200 | [diff] [blame] | 2374 | if (state->ops->commit) { |
| 2375 | state->ops->commit(state); |
| 2376 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2377 | } |
| 2378 | |
| 2379 | /* success */ |
| 2380 | goto exit; |
| 2381 | |
| 2382 | delete_and_fail: |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2383 | /* failure, and it is all-or-none; roll back all operations */ |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2384 | QTAILQ_FOREACH_REVERSE(state, &snap_bdrv_states, entry) { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2385 | if (state->ops->abort) { |
| 2386 | state->ops->abort(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2387 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2388 | } |
| 2389 | exit: |
John Snow | f4de0f8 | 2019-01-11 11:59:16 -0600 | [diff] [blame] | 2390 | QTAILQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2391 | if (state->ops->clean) { |
| 2392 | state->ops->clean(state); |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2393 | } |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 2394 | g_free(state); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2395 | } |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2396 | if (!has_props) { |
| 2397 | qapi_free_TransactionProperties(props); |
| 2398 | } |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2399 | job_txn_unref(block_job_txn); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2400 | } |
| 2401 | |
Vladimir Sementsov-Ogievskiy | a3b5253 | 2017-06-28 15:05:25 +0300 | [diff] [blame] | 2402 | BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node, |
| 2403 | const char *name, |
| 2404 | Error **errp) |
| 2405 | { |
| 2406 | BdrvDirtyBitmap *bitmap; |
| 2407 | BlockDriverState *bs; |
| 2408 | BlockDirtyBitmapSha256 *ret = NULL; |
| 2409 | char *sha256; |
| 2410 | |
| 2411 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 2412 | if (!bitmap || !bs) { |
| 2413 | return NULL; |
| 2414 | } |
| 2415 | |
| 2416 | sha256 = bdrv_dirty_bitmap_sha256(bitmap, errp); |
| 2417 | if (sha256 == NULL) { |
| 2418 | return NULL; |
| 2419 | } |
| 2420 | |
| 2421 | ret = g_new(BlockDirtyBitmapSha256, 1); |
| 2422 | ret->sha256 = sha256; |
| 2423 | |
| 2424 | return ret; |
| 2425 | } |
| 2426 | |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2427 | void coroutine_fn qmp_block_resize(bool has_device, const char *device, |
| 2428 | bool has_node_name, const char *node_name, |
| 2429 | int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2430 | { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2431 | Error *local_err = NULL; |
Kevin Wolf | d9dbf25 | 2020-12-03 18:23:09 +0100 | [diff] [blame] | 2432 | BlockBackend *blk; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2433 | BlockDriverState *bs; |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2434 | AioContext *old_ctx; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2435 | |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2436 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
| 2437 | has_node_name ? node_name : NULL, |
| 2438 | &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2439 | if (local_err) { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2440 | error_propagate(errp, local_err); |
| 2441 | return; |
| 2442 | } |
| 2443 | |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2444 | if (size < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2445 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Kevin Wolf | d9dbf25 | 2020-12-03 18:23:09 +0100 | [diff] [blame] | 2446 | return; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2447 | } |
| 2448 | |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2449 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2450 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
Kevin Wolf | d9dbf25 | 2020-12-03 18:23:09 +0100 | [diff] [blame] | 2451 | return; |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2452 | } |
| 2453 | |
Eric Blake | a3aeeab | 2020-04-28 14:26:46 -0500 | [diff] [blame] | 2454 | blk = blk_new_with_bs(bs, BLK_PERM_RESIZE, BLK_PERM_ALL, errp); |
| 2455 | if (!blk) { |
Kevin Wolf | d9dbf25 | 2020-12-03 18:23:09 +0100 | [diff] [blame] | 2456 | return; |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 2457 | } |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 2458 | |
Kevin Wolf | 8089eab | 2020-12-03 18:23:10 +0100 | [diff] [blame] | 2459 | bdrv_co_lock(bs); |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 2460 | bdrv_drained_begin(bs); |
Kevin Wolf | 8089eab | 2020-12-03 18:23:10 +0100 | [diff] [blame] | 2461 | bdrv_co_unlock(bs); |
| 2462 | |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2463 | old_ctx = bdrv_co_enter(bs); |
Eric Blake | a3aeeab | 2020-04-28 14:26:46 -0500 | [diff] [blame] | 2464 | blk_truncate(blk, size, false, PREALLOC_MODE_OFF, 0, errp); |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2465 | bdrv_co_leave(bs, old_ctx); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2466 | |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2467 | bdrv_co_lock(bs); |
Kevin Wolf | 8089eab | 2020-12-03 18:23:10 +0100 | [diff] [blame] | 2468 | bdrv_drained_end(bs); |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 2469 | blk_unref(blk); |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2470 | bdrv_co_unlock(bs); |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2471 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2472 | |
Alberto Garcia | 2323322 | 2016-07-05 17:28:59 +0300 | [diff] [blame] | 2473 | 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] | 2474 | bool has_base, const char *base, |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2475 | bool has_base_node, const char *base_node, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2476 | bool has_backing_file, const char *backing_file, |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2477 | bool has_bottom, const char *bottom, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2478 | bool has_speed, int64_t speed, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2479 | bool has_on_error, BlockdevOnError on_error, |
Andrey Shinkevich | 880747a | 2020-12-16 09:16:54 +0300 | [diff] [blame] | 2480 | bool has_filter_node_name, const char *filter_node_name, |
John Snow | 241ca1a | 2018-09-06 09:02:23 -0400 | [diff] [blame] | 2481 | bool has_auto_finalize, bool auto_finalize, |
| 2482 | bool has_auto_dismiss, bool auto_dismiss, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2483 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2484 | { |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2485 | BlockDriverState *bs, *iter, *iter_end; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2486 | BlockDriverState *base_bs = NULL; |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2487 | BlockDriverState *bottom_bs = NULL; |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2488 | AioContext *aio_context; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 2489 | Error *local_err = NULL; |
John Snow | cf6320d | 2018-09-06 09:02:12 -0400 | [diff] [blame] | 2490 | int job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2491 | |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2492 | if (has_base && has_base_node) { |
| 2493 | error_setg(errp, "'base' and 'base-node' cannot be specified " |
| 2494 | "at the same time"); |
| 2495 | return; |
| 2496 | } |
| 2497 | |
| 2498 | if (has_base && has_bottom) { |
| 2499 | error_setg(errp, "'base' and 'bottom' cannot be specified " |
| 2500 | "at the same time"); |
| 2501 | return; |
| 2502 | } |
| 2503 | |
| 2504 | if (has_bottom && has_base_node) { |
| 2505 | error_setg(errp, "'bottom' and 'base-node' cannot be specified " |
| 2506 | "at the same time"); |
| 2507 | return; |
| 2508 | } |
| 2509 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2510 | if (!has_on_error) { |
| 2511 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2512 | } |
| 2513 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2514 | bs = bdrv_lookup_bs(device, device, errp); |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2515 | if (!bs) { |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2516 | return; |
| 2517 | } |
| 2518 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2519 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2520 | aio_context_acquire(aio_context); |
| 2521 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2522 | if (has_base) { |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2523 | base_bs = bdrv_find_backing_image(bs, base); |
| 2524 | if (base_bs == NULL) { |
Markus Armbruster | b0d7be2 | 2020-11-13 09:26:19 +0100 | [diff] [blame] | 2525 | error_setg(errp, "Can't find '%s' in the backing chain", base); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2526 | goto out; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2527 | } |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2528 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2529 | } |
| 2530 | |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2531 | if (has_base_node) { |
| 2532 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 2533 | if (!base_bs) { |
| 2534 | goto out; |
| 2535 | } |
| 2536 | if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) { |
| 2537 | error_setg(errp, "Node '%s' is not a backing image of '%s'", |
| 2538 | base_node, device); |
| 2539 | goto out; |
| 2540 | } |
| 2541 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 2542 | bdrv_refresh_filename(base_bs); |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2543 | } |
| 2544 | |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2545 | if (has_bottom) { |
| 2546 | bottom_bs = bdrv_lookup_bs(NULL, bottom, errp); |
| 2547 | if (!bottom_bs) { |
| 2548 | goto out; |
| 2549 | } |
| 2550 | if (!bottom_bs->drv) { |
| 2551 | error_setg(errp, "Node '%s' is not open", bottom); |
| 2552 | goto out; |
| 2553 | } |
| 2554 | if (bottom_bs->drv->is_filter) { |
| 2555 | error_setg(errp, "Node '%s' is a filter, use a non-filter node " |
| 2556 | "as 'bottom'", bottom); |
| 2557 | goto out; |
| 2558 | } |
| 2559 | if (!bdrv_chain_contains(bs, bottom_bs)) { |
| 2560 | error_setg(errp, "Node '%s' is not in a chain starting from '%s'", |
| 2561 | bottom, device); |
| 2562 | goto out; |
| 2563 | } |
| 2564 | assert(bdrv_get_aio_context(bottom_bs) == aio_context); |
| 2565 | } |
| 2566 | |
| 2567 | /* |
| 2568 | * Check for op blockers in the whole chain between bs and base (or bottom) |
| 2569 | */ |
| 2570 | iter_end = has_bottom ? bdrv_filter_or_cow_bs(bottom_bs) : base_bs; |
| 2571 | for (iter = bs; iter && iter != iter_end; |
Max Reitz | 67acfd2 | 2019-06-12 17:48:11 +0200 | [diff] [blame] | 2572 | iter = bdrv_filter_or_cow_bs(iter)) |
| 2573 | { |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2574 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) { |
| 2575 | goto out; |
| 2576 | } |
| 2577 | } |
| 2578 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2579 | /* if we are streaming the entire chain, the result will have no backing |
| 2580 | * file, and specifying one is therefore an error */ |
| 2581 | if (base_bs == NULL && has_backing_file) { |
| 2582 | error_setg(errp, "backing file specified, but streaming the " |
| 2583 | "entire chain"); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2584 | goto out; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2585 | } |
| 2586 | |
John Snow | 241ca1a | 2018-09-06 09:02:23 -0400 | [diff] [blame] | 2587 | if (has_auto_finalize && !auto_finalize) { |
| 2588 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2589 | } |
| 2590 | if (has_auto_dismiss && !auto_dismiss) { |
| 2591 | job_flags |= JOB_MANUAL_DISMISS; |
| 2592 | } |
| 2593 | |
Andrey Shinkevich | 000e5a1 | 2020-12-16 09:16:59 +0300 | [diff] [blame] | 2594 | stream_start(has_job_id ? job_id : NULL, bs, base_bs, backing_file, |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2595 | bottom_bs, job_flags, has_speed ? speed : 0, on_error, |
Andrey Shinkevich | 880747a | 2020-12-16 09:16:54 +0300 | [diff] [blame] | 2596 | filter_node_name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2597 | if (local_err) { |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 2598 | error_propagate(errp, local_err); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2599 | goto out; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2600 | } |
| 2601 | |
Vladimir Sementsov-Ogievskiy | b23c580 | 2019-06-06 18:41:32 +0300 | [diff] [blame] | 2602 | trace_qmp_block_stream(bs); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2603 | |
| 2604 | out: |
| 2605 | aio_context_release(aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2606 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 2607 | |
Alberto Garcia | fd62c60 | 2016-07-05 17:29:00 +0300 | [diff] [blame] | 2608 | 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] | 2609 | bool has_base_node, const char *base_node, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2610 | bool has_base, const char *base, |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2611 | bool has_top_node, const char *top_node, |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2612 | bool has_top, const char *top, |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2613 | bool has_backing_file, const char *backing_file, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2614 | bool has_speed, int64_t speed, |
Kevin Wolf | 8faad1c | 2020-02-14 21:08:11 +0100 | [diff] [blame] | 2615 | bool has_on_error, BlockdevOnError on_error, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2616 | bool has_filter_node_name, const char *filter_node_name, |
John Snow | 96fbf53 | 2018-09-06 09:02:21 -0400 | [diff] [blame] | 2617 | bool has_auto_finalize, bool auto_finalize, |
| 2618 | bool has_auto_dismiss, bool auto_dismiss, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2619 | Error **errp) |
| 2620 | { |
| 2621 | BlockDriverState *bs; |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2622 | BlockDriverState *iter; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2623 | BlockDriverState *base_bs, *top_bs; |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2624 | AioContext *aio_context; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2625 | Error *local_err = NULL; |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 2626 | int job_flags = JOB_DEFAULT; |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2627 | uint64_t top_perm, top_shared; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2628 | |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 2629 | if (!has_speed) { |
| 2630 | speed = 0; |
| 2631 | } |
Kevin Wolf | 8faad1c | 2020-02-14 21:08:11 +0100 | [diff] [blame] | 2632 | if (!has_on_error) { |
| 2633 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2634 | } |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2635 | if (!has_filter_node_name) { |
| 2636 | filter_node_name = NULL; |
| 2637 | } |
John Snow | 96fbf53 | 2018-09-06 09:02:21 -0400 | [diff] [blame] | 2638 | if (has_auto_finalize && !auto_finalize) { |
| 2639 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2640 | } |
| 2641 | if (has_auto_dismiss && !auto_dismiss) { |
| 2642 | job_flags |= JOB_MANUAL_DISMISS; |
| 2643 | } |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 2644 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2645 | /* Important Note: |
| 2646 | * libvirt relies on the DeviceNotFound error class in order to probe for |
| 2647 | * live commit feature versions; for this to work, we must make sure to |
| 2648 | * perform the device lookup before any generic errors that may occur in a |
| 2649 | * scenario in which all optional arguments are omitted. */ |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2650 | bs = qmp_get_root_bs(device, &local_err); |
| 2651 | if (!bs) { |
| 2652 | bs = bdrv_lookup_bs(device, device, NULL); |
| 2653 | if (!bs) { |
| 2654 | error_free(local_err); |
| 2655 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2656 | "Device '%s' not found", device); |
| 2657 | } else { |
| 2658 | error_propagate(errp, local_err); |
| 2659 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2660 | return; |
| 2661 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2662 | |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2663 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2664 | aio_context_acquire(aio_context); |
| 2665 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 2666 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2667 | goto out; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 2668 | } |
| 2669 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2670 | /* default top_bs is the active layer */ |
| 2671 | top_bs = bs; |
| 2672 | |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2673 | if (has_top_node && has_top) { |
| 2674 | error_setg(errp, "'top-node' and 'top' are mutually exclusive"); |
| 2675 | goto out; |
| 2676 | } else if (has_top_node) { |
| 2677 | top_bs = bdrv_lookup_bs(NULL, top_node, errp); |
| 2678 | if (top_bs == NULL) { |
| 2679 | goto out; |
| 2680 | } |
| 2681 | if (!bdrv_chain_contains(bs, top_bs)) { |
| 2682 | error_setg(errp, "'%s' is not in this backing file chain", |
| 2683 | top_node); |
| 2684 | goto out; |
| 2685 | } |
| 2686 | } else if (has_top && top) { |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 2687 | /* This strcmp() is just a shortcut, there is no need to |
| 2688 | * refresh @bs's filename. If it mismatches, |
| 2689 | * bdrv_find_backing_image() will do the refresh and may still |
| 2690 | * return @bs. */ |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2691 | if (strcmp(bs->filename, top) != 0) { |
| 2692 | top_bs = bdrv_find_backing_image(bs, top); |
| 2693 | } |
| 2694 | } |
| 2695 | |
| 2696 | if (top_bs == NULL) { |
| 2697 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2698 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2699 | } |
| 2700 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2701 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
| 2702 | |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2703 | if (has_base_node && has_base) { |
| 2704 | error_setg(errp, "'base-node' and 'base' are mutually exclusive"); |
| 2705 | goto out; |
| 2706 | } else if (has_base_node) { |
| 2707 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 2708 | if (base_bs == NULL) { |
| 2709 | goto out; |
| 2710 | } |
| 2711 | if (!bdrv_chain_contains(top_bs, base_bs)) { |
| 2712 | error_setg(errp, "'%s' is not in this backing file chain", |
| 2713 | base_node); |
| 2714 | goto out; |
| 2715 | } |
| 2716 | } else if (has_base && base) { |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2717 | base_bs = bdrv_find_backing_image(top_bs, base); |
Markus Armbruster | b0d7be2 | 2020-11-13 09:26:19 +0100 | [diff] [blame] | 2718 | if (base_bs == NULL) { |
| 2719 | error_setg(errp, "Can't find '%s' in the backing chain", base); |
| 2720 | goto out; |
| 2721 | } |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2722 | } else { |
| 2723 | base_bs = bdrv_find_base(top_bs); |
Markus Armbruster | b0d7be2 | 2020-11-13 09:26:19 +0100 | [diff] [blame] | 2724 | if (base_bs == NULL) { |
| 2725 | error_setg(errp, "There is no backimg image"); |
| 2726 | goto out; |
| 2727 | } |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2728 | } |
| 2729 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2730 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 2731 | |
Max Reitz | 9a71b9d | 2019-06-12 17:47:37 +0200 | [diff] [blame] | 2732 | for (iter = top_bs; iter != bdrv_filter_or_cow_bs(base_bs); |
| 2733 | iter = bdrv_filter_or_cow_bs(iter)) |
| 2734 | { |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2735 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 2736 | goto out; |
| 2737 | } |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 2738 | } |
| 2739 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2740 | /* Do not allow attempts to commit an image into itself */ |
| 2741 | if (top_bs == base_bs) { |
| 2742 | error_setg(errp, "cannot commit an image into itself"); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2743 | goto out; |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2744 | } |
| 2745 | |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2746 | /* |
| 2747 | * Active commit is required if and only if someone has taken a |
| 2748 | * WRITE permission on the top node. Historically, we have always |
| 2749 | * used active commit for top nodes, so continue that practice |
| 2750 | * lest we possibly break clients that rely on this behavior, e.g. |
| 2751 | * to later attach this node to a writing parent. |
| 2752 | * (Active commit is never really wrong.) |
| 2753 | */ |
| 2754 | bdrv_get_cumulative_perm(top_bs, &top_perm, &top_shared); |
| 2755 | if (top_perm & BLK_PERM_WRITE || |
| 2756 | bdrv_skip_filters(top_bs) == bdrv_skip_filters(bs)) |
| 2757 | { |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2758 | if (has_backing_file) { |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2759 | if (bdrv_skip_filters(top_bs) == bdrv_skip_filters(bs)) { |
| 2760 | error_setg(errp, "'backing-file' specified," |
| 2761 | " but 'top' is the active layer"); |
| 2762 | } else { |
| 2763 | error_setg(errp, "'backing-file' specified, but 'top' has a " |
| 2764 | "writer on it"); |
| 2765 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2766 | goto out; |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2767 | } |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2768 | if (!has_job_id) { |
| 2769 | /* |
| 2770 | * Emulate here what block_job_create() does, because it |
| 2771 | * is possible that @bs != @top_bs (the block job should |
| 2772 | * be named after @bs, even if @top_bs is the actual |
| 2773 | * source) |
| 2774 | */ |
| 2775 | job_id = bdrv_get_device_name(bs); |
| 2776 | } |
| 2777 | 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] | 2778 | filter_node_name, NULL, NULL, false, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 2779 | } else { |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2780 | BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs); |
| 2781 | if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
| 2782 | goto out; |
| 2783 | } |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 2784 | commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, job_flags, |
| 2785 | speed, on_error, has_backing_file ? backing_file : NULL, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2786 | filter_node_name, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 2787 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2788 | if (local_err != NULL) { |
| 2789 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2790 | goto out; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2791 | } |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2792 | |
| 2793 | out: |
| 2794 | aio_context_release(aio_context); |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2795 | } |
| 2796 | |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2797 | /* Common QMP interface for drive-backup and blockdev-backup */ |
| 2798 | static BlockJob *do_backup_common(BackupCommon *backup, |
| 2799 | BlockDriverState *bs, |
| 2800 | BlockDriverState *target_bs, |
| 2801 | AioContext *aio_context, |
| 2802 | JobTxn *txn, Error **errp) |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2803 | { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2804 | BlockJob *job = NULL; |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 2805 | BdrvDirtyBitmap *bmap = NULL; |
Vladimir Sementsov-Ogievskiy | 6a30f66 | 2021-01-17 00:47:00 +0300 | [diff] [blame] | 2806 | BackupPerf perf = { .max_workers = 64 }; |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2807 | int job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2808 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2809 | if (!backup->has_speed) { |
| 2810 | backup->speed = 0; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2811 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2812 | if (!backup->has_on_source_error) { |
| 2813 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2814 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2815 | if (!backup->has_on_target_error) { |
| 2816 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2817 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2818 | if (!backup->has_job_id) { |
| 2819 | backup->job_id = NULL; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2820 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 2821 | if (!backup->has_auto_finalize) { |
| 2822 | backup->auto_finalize = true; |
| 2823 | } |
| 2824 | if (!backup->has_auto_dismiss) { |
| 2825 | backup->auto_dismiss = true; |
| 2826 | } |
Pavel Butsykin | 13b9414 | 2016-07-22 11:17:52 +0300 | [diff] [blame] | 2827 | if (!backup->has_compress) { |
| 2828 | backup->compress = false; |
| 2829 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2830 | |
Vladimir Sementsov-Ogievskiy | 86c6a3b | 2021-01-17 00:46:43 +0300 | [diff] [blame] | 2831 | if (backup->x_perf) { |
| 2832 | if (backup->x_perf->has_use_copy_range) { |
| 2833 | perf.use_copy_range = backup->x_perf->use_copy_range; |
| 2834 | } |
Vladimir Sementsov-Ogievskiy | 2c59fd8 | 2021-01-17 00:46:52 +0300 | [diff] [blame] | 2835 | if (backup->x_perf->has_max_workers) { |
| 2836 | perf.max_workers = backup->x_perf->max_workers; |
| 2837 | } |
| 2838 | if (backup->x_perf->has_max_chunk) { |
| 2839 | perf.max_chunk = backup->x_perf->max_chunk; |
| 2840 | } |
Vladimir Sementsov-Ogievskiy | 86c6a3b | 2021-01-17 00:46:43 +0300 | [diff] [blame] | 2841 | } |
| 2842 | |
John Snow | a6c9365 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 2843 | if ((backup->sync == MIRROR_SYNC_MODE_BITMAP) || |
| 2844 | (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL)) { |
| 2845 | /* done before desugaring 'incremental' to print the right message */ |
| 2846 | if (!backup->has_bitmap) { |
| 2847 | error_setg(errp, "must provide a valid bitmap name for " |
| 2848 | "'%s' sync mode", MirrorSyncMode_str(backup->sync)); |
| 2849 | return NULL; |
| 2850 | } |
| 2851 | } |
| 2852 | |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2853 | if (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL) { |
| 2854 | if (backup->has_bitmap_mode && |
| 2855 | backup->bitmap_mode != BITMAP_SYNC_MODE_ON_SUCCESS) { |
| 2856 | error_setg(errp, "Bitmap sync mode must be '%s' " |
| 2857 | "when using sync mode '%s'", |
| 2858 | BitmapSyncMode_str(BITMAP_SYNC_MODE_ON_SUCCESS), |
| 2859 | MirrorSyncMode_str(backup->sync)); |
| 2860 | return NULL; |
| 2861 | } |
| 2862 | backup->has_bitmap_mode = true; |
| 2863 | backup->sync = MIRROR_SYNC_MODE_BITMAP; |
| 2864 | backup->bitmap_mode = BITMAP_SYNC_MODE_ON_SUCCESS; |
| 2865 | } |
| 2866 | |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2867 | if (backup->has_bitmap) { |
| 2868 | bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap); |
| 2869 | if (!bmap) { |
| 2870 | error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap); |
| 2871 | return NULL; |
| 2872 | } |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2873 | if (!backup->has_bitmap_mode) { |
| 2874 | error_setg(errp, "Bitmap sync mode must be given " |
| 2875 | "when providing a bitmap"); |
| 2876 | return NULL; |
| 2877 | } |
John Snow | b30ffbe | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2878 | if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2879 | return NULL; |
| 2880 | } |
John Snow | 1a2b8b4 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 2881 | |
| 2882 | /* This does not produce a useful bitmap artifact: */ |
| 2883 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
| 2884 | error_setg(errp, "sync mode '%s' does not produce meaningful bitmap" |
| 2885 | " outputs", MirrorSyncMode_str(backup->sync)); |
| 2886 | return NULL; |
| 2887 | } |
| 2888 | |
| 2889 | /* If the bitmap isn't used for input or output, this is useless: */ |
| 2890 | if (backup->bitmap_mode == BITMAP_SYNC_MODE_NEVER && |
| 2891 | backup->sync != MIRROR_SYNC_MODE_BITMAP) { |
| 2892 | error_setg(errp, "Bitmap sync mode '%s' has no meaningful effect" |
| 2893 | " when combined with sync mode '%s'", |
| 2894 | BitmapSyncMode_str(backup->bitmap_mode), |
| 2895 | MirrorSyncMode_str(backup->sync)); |
| 2896 | return NULL; |
| 2897 | } |
| 2898 | } |
| 2899 | |
| 2900 | if (!backup->has_bitmap && backup->has_bitmap_mode) { |
| 2901 | error_setg(errp, "Cannot specify bitmap sync mode without a bitmap"); |
| 2902 | return NULL; |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2903 | } |
| 2904 | |
| 2905 | if (!backup->auto_finalize) { |
| 2906 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2907 | } |
| 2908 | if (!backup->auto_dismiss) { |
| 2909 | job_flags |= JOB_MANUAL_DISMISS; |
| 2910 | } |
| 2911 | |
| 2912 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2913 | backup->sync, bmap, backup->bitmap_mode, |
| 2914 | backup->compress, |
Vladimir Sementsov-Ogievskiy | 00e30f0 | 2019-10-01 16:14:09 +0300 | [diff] [blame] | 2915 | backup->filter_node_name, |
Vladimir Sementsov-Ogievskiy | 86c6a3b | 2021-01-17 00:46:43 +0300 | [diff] [blame] | 2916 | &perf, |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2917 | backup->on_source_error, |
| 2918 | backup->on_target_error, |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2919 | job_flags, NULL, NULL, txn, errp); |
| 2920 | return job; |
| 2921 | } |
| 2922 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 2923 | void qmp_drive_backup(DriveBackup *backup, Error **errp) |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2924 | { |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 2925 | TransactionAction action = { |
| 2926 | .type = TRANSACTION_ACTION_KIND_DRIVE_BACKUP, |
| 2927 | .u.drive_backup.data = backup, |
| 2928 | }; |
| 2929 | blockdev_do_action(&action, errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 2930 | } |
| 2931 | |
Peter Krempa | facda54 | 2020-01-20 09:50:49 +0100 | [diff] [blame] | 2932 | BlockDeviceInfoList *qmp_query_named_block_nodes(bool has_flat, |
| 2933 | bool flat, |
| 2934 | Error **errp) |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 2935 | { |
Peter Krempa | facda54 | 2020-01-20 09:50:49 +0100 | [diff] [blame] | 2936 | bool return_flat = has_flat && flat; |
| 2937 | |
| 2938 | return bdrv_named_nodes_list(return_flat, errp); |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 2939 | } |
| 2940 | |
Vladimir Sementsov-Ogievskiy | 5d3b4e9 | 2018-12-21 20:09:07 +0300 | [diff] [blame] | 2941 | XDbgBlockGraph *qmp_x_debug_query_block_graph(Error **errp) |
| 2942 | { |
| 2943 | return bdrv_get_xdbg_block_graph(errp); |
| 2944 | } |
| 2945 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 2946 | void qmp_blockdev_backup(BlockdevBackup *backup, Error **errp) |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2947 | { |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 2948 | TransactionAction action = { |
| 2949 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP, |
| 2950 | .u.blockdev_backup.data = backup, |
| 2951 | }; |
| 2952 | blockdev_do_action(&action, errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 2953 | } |
| 2954 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2955 | /* Parameter check and block job starting for drive mirroring. |
| 2956 | * Caller should hold @device and @target's aio context (must be the same). |
| 2957 | **/ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 2958 | static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2959 | BlockDriverState *target, |
| 2960 | bool has_replaces, const char *replaces, |
| 2961 | enum MirrorSyncMode sync, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 2962 | BlockMirrorBackingMode backing_mode, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 2963 | bool zero_target, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2964 | bool has_speed, int64_t speed, |
| 2965 | bool has_granularity, uint32_t granularity, |
| 2966 | bool has_buf_size, int64_t buf_size, |
| 2967 | bool has_on_source_error, |
| 2968 | BlockdevOnError on_source_error, |
| 2969 | bool has_on_target_error, |
| 2970 | BlockdevOnError on_target_error, |
| 2971 | bool has_unmap, bool unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2972 | bool has_filter_node_name, |
| 2973 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 2974 | bool has_copy_mode, MirrorCopyMode copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 2975 | bool has_auto_finalize, bool auto_finalize, |
| 2976 | bool has_auto_dismiss, bool auto_dismiss, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2977 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2978 | { |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2979 | BlockDriverState *unfiltered_bs; |
John Snow | a1999b3 | 2018-09-06 09:02:11 -0400 | [diff] [blame] | 2980 | int job_flags = JOB_DEFAULT; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2981 | |
| 2982 | if (!has_speed) { |
| 2983 | speed = 0; |
| 2984 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 2985 | if (!has_on_source_error) { |
| 2986 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2987 | } |
| 2988 | if (!has_on_target_error) { |
| 2989 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2990 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2991 | if (!has_granularity) { |
| 2992 | granularity = 0; |
| 2993 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 2994 | if (!has_buf_size) { |
Wen Congyang | 48ac0a4 | 2015-05-15 15:51:36 +0800 | [diff] [blame] | 2995 | buf_size = 0; |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 2996 | } |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 2997 | if (!has_unmap) { |
| 2998 | unmap = true; |
| 2999 | } |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3000 | if (!has_filter_node_name) { |
| 3001 | filter_node_name = NULL; |
| 3002 | } |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3003 | if (!has_copy_mode) { |
| 3004 | copy_mode = MIRROR_COPY_MODE_BACKGROUND; |
| 3005 | } |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3006 | if (has_auto_finalize && !auto_finalize) { |
| 3007 | job_flags |= JOB_MANUAL_FINALIZE; |
| 3008 | } |
| 3009 | if (has_auto_dismiss && !auto_dismiss) { |
| 3010 | job_flags |= JOB_MANUAL_DISMISS; |
| 3011 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 3012 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3013 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3014 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 3015 | "a value in range [512B, 64MB]"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3016 | return; |
| 3017 | } |
| 3018 | if (granularity & (granularity - 1)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 3019 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
Markus Armbruster | 6cc0667 | 2020-11-13 09:26:26 +0100 | [diff] [blame] | 3020 | "a power of 2"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 3021 | return; |
| 3022 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3023 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3024 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3025 | return; |
| 3026 | } |
Fam Zheng | e40e502 | 2015-12-24 12:45:04 +0800 | [diff] [blame] | 3027 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
| 3028 | return; |
| 3029 | } |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3030 | |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3031 | if (!bdrv_backing_chain_next(bs) && sync == MIRROR_SYNC_MODE_TOP) { |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3032 | sync = MIRROR_SYNC_MODE_FULL; |
| 3033 | } |
| 3034 | |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3035 | if (!has_replaces) { |
| 3036 | /* We want to mirror from @bs, but keep implicit filters on top */ |
| 3037 | unfiltered_bs = bdrv_skip_implicit_filters(bs); |
| 3038 | if (unfiltered_bs != bs) { |
| 3039 | replaces = unfiltered_bs->node_name; |
| 3040 | has_replaces = true; |
| 3041 | } |
| 3042 | } |
| 3043 | |
Max Reitz | 74ce9e4 | 2019-02-13 23:53:01 +0100 | [diff] [blame] | 3044 | if (has_replaces) { |
| 3045 | BlockDriverState *to_replace_bs; |
| 3046 | AioContext *replace_aio_context; |
| 3047 | int64_t bs_size, replace_size; |
| 3048 | |
| 3049 | bs_size = bdrv_getlength(bs); |
| 3050 | if (bs_size < 0) { |
| 3051 | error_setg_errno(errp, -bs_size, "Failed to query device's size"); |
| 3052 | return; |
| 3053 | } |
| 3054 | |
| 3055 | to_replace_bs = check_to_replace_node(bs, replaces, errp); |
| 3056 | if (!to_replace_bs) { |
| 3057 | return; |
| 3058 | } |
| 3059 | |
| 3060 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
| 3061 | aio_context_acquire(replace_aio_context); |
| 3062 | replace_size = bdrv_getlength(to_replace_bs); |
| 3063 | aio_context_release(replace_aio_context); |
| 3064 | |
| 3065 | if (replace_size < 0) { |
| 3066 | error_setg_errno(errp, -replace_size, |
| 3067 | "Failed to query the replacement node's size"); |
| 3068 | return; |
| 3069 | } |
| 3070 | if (bs_size != replace_size) { |
| 3071 | error_setg(errp, "cannot replace image with a mirror image of " |
| 3072 | "different size"); |
| 3073 | return; |
| 3074 | } |
| 3075 | } |
| 3076 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3077 | /* pass the node name to replace to mirror start since it's loose coupling |
| 3078 | * and will allow to check whether the node still exist at mirror completion |
| 3079 | */ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3080 | mirror_start(job_id, bs, target, |
John Snow | a1999b3 | 2018-09-06 09:02:11 -0400 | [diff] [blame] | 3081 | has_replaces ? replaces : NULL, job_flags, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3082 | speed, granularity, buf_size, sync, backing_mode, zero_target, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3083 | on_source_error, on_target_error, unmap, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3084 | copy_mode, errp); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3085 | } |
| 3086 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3087 | void qmp_drive_mirror(DriveMirror *arg, Error **errp) |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3088 | { |
| 3089 | BlockDriverState *bs; |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3090 | BlockDriverState *target_backing_bs, *target_bs; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3091 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3092 | AioContext *old_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3093 | BlockMirrorBackingMode backing_mode; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3094 | Error *local_err = NULL; |
| 3095 | QDict *options = NULL; |
| 3096 | int flags; |
| 3097 | int64_t size; |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3098 | const char *format = arg->format; |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3099 | bool zero_target; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3100 | int ret; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3101 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3102 | bs = qmp_get_root_bs(arg->device, errp); |
| 3103 | if (!bs) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3104 | return; |
| 3105 | } |
| 3106 | |
Paolo Bonzini | cb2af91 | 2018-02-07 17:29:20 +0100 | [diff] [blame] | 3107 | /* Early check to avoid creating target */ |
| 3108 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 3109 | return; |
| 3110 | } |
| 3111 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3112 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3113 | aio_context_acquire(aio_context); |
| 3114 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3115 | if (!arg->has_mode) { |
| 3116 | arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 3117 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3118 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3119 | if (!arg->has_format) { |
| 3120 | format = (arg->mode == NEW_IMAGE_MODE_EXISTING |
| 3121 | ? NULL : bs->drv->format_name); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3122 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3123 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 3124 | flags = bs->open_flags | BDRV_O_RDWR; |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3125 | target_backing_bs = bdrv_cow_bs(bdrv_skip_filters(bs)); |
| 3126 | if (!target_backing_bs && arg->sync == MIRROR_SYNC_MODE_TOP) { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3127 | arg->sync = MIRROR_SYNC_MODE_FULL; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3128 | } |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3129 | if (arg->sync == MIRROR_SYNC_MODE_NONE) { |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3130 | target_backing_bs = bs; |
Max Reitz | 117e0c8 | 2013-11-25 20:28:55 +0100 | [diff] [blame] | 3131 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3132 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3133 | size = bdrv_getlength(bs); |
| 3134 | if (size < 0) { |
| 3135 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3136 | goto out; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 3137 | } |
| 3138 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3139 | if (arg->has_replaces) { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3140 | if (!arg->has_node_name) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3141 | error_setg(errp, "a node-name must be provided when replacing a" |
| 3142 | " named node of the graph"); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3143 | goto out; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3144 | } |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 3145 | } |
| 3146 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3147 | if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) { |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3148 | backing_mode = MIRROR_SOURCE_BACKING_CHAIN; |
| 3149 | } else { |
| 3150 | backing_mode = MIRROR_OPEN_BACKING_CHAIN; |
| 3151 | } |
| 3152 | |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3153 | /* Don't open backing image in create() */ |
| 3154 | flags |= BDRV_O_NO_BACKING; |
| 3155 | |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3156 | if ((arg->sync == MIRROR_SYNC_MODE_FULL || !target_backing_bs) |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3157 | && arg->mode != NEW_IMAGE_MODE_EXISTING) |
Max Reitz | 1452686 | 2013-11-06 19:50:44 +0100 | [diff] [blame] | 3158 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3159 | /* create new image w/o backing file */ |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3160 | assert(format); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3161 | bdrv_img_create(arg->target, format, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3162 | NULL, NULL, NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3163 | } else { |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3164 | /* Implicit filters should not appear in the filename */ |
| 3165 | BlockDriverState *explicit_backing = |
| 3166 | bdrv_skip_implicit_filters(target_backing_bs); |
| 3167 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3168 | switch (arg->mode) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3169 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3170 | break; |
| 3171 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
| 3172 | /* create new image with backing file */ |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3173 | bdrv_refresh_filename(explicit_backing); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3174 | bdrv_img_create(arg->target, format, |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 3175 | explicit_backing->filename, |
| 3176 | explicit_backing->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 3177 | NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3178 | break; |
| 3179 | default: |
| 3180 | abort(); |
| 3181 | } |
| 3182 | } |
| 3183 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3184 | if (local_err) { |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3185 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3186 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3187 | } |
| 3188 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3189 | options = qdict_new(); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3190 | if (arg->has_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3191 | qdict_put_str(options, "node-name", arg->node_name); |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3192 | } |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3193 | if (format) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3194 | qdict_put_str(options, "driver", format); |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3195 | } |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3196 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 3197 | /* Mirroring takes care of copy-on-write using the source's backing |
| 3198 | * file. |
| 3199 | */ |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3200 | target_bs = bdrv_open(arg->target, NULL, options, flags, errp); |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 3201 | if (!target_bs) { |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3202 | goto out; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3203 | } |
| 3204 | |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3205 | zero_target = (arg->sync == MIRROR_SYNC_MODE_FULL && |
| 3206 | (arg->mode == NEW_IMAGE_MODE_EXISTING || |
| 3207 | !bdrv_has_zero_init(target_bs))); |
| 3208 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3209 | |
| 3210 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 3211 | old_context = bdrv_get_aio_context(target_bs); |
| 3212 | aio_context_release(aio_context); |
| 3213 | aio_context_acquire(old_context); |
| 3214 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3215 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
| 3216 | if (ret < 0) { |
| 3217 | bdrv_unref(target_bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3218 | aio_context_release(old_context); |
| 3219 | return; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3220 | } |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3221 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3222 | aio_context_release(old_context); |
| 3223 | aio_context_acquire(aio_context); |
| 3224 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3225 | blockdev_mirror_common(arg->has_job_id ? arg->job_id : NULL, bs, target_bs, |
| 3226 | arg->has_replaces, arg->replaces, arg->sync, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3227 | backing_mode, zero_target, |
| 3228 | arg->has_speed, arg->speed, |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3229 | arg->has_granularity, arg->granularity, |
| 3230 | arg->has_buf_size, arg->buf_size, |
| 3231 | arg->has_on_source_error, arg->on_source_error, |
| 3232 | arg->has_on_target_error, arg->on_target_error, |
| 3233 | arg->has_unmap, arg->unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3234 | false, NULL, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3235 | arg->has_copy_mode, arg->copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3236 | arg->has_auto_finalize, arg->auto_finalize, |
| 3237 | arg->has_auto_dismiss, arg->auto_dismiss, |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 3238 | errp); |
Kevin Wolf | e253f4b | 2016-04-12 16:17:41 +0200 | [diff] [blame] | 3239 | bdrv_unref(target_bs); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3240 | out: |
| 3241 | aio_context_release(aio_context); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3242 | } |
| 3243 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3244 | void qmp_blockdev_mirror(bool has_job_id, const char *job_id, |
| 3245 | const char *device, const char *target, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3246 | bool has_replaces, const char *replaces, |
| 3247 | MirrorSyncMode sync, |
| 3248 | bool has_speed, int64_t speed, |
| 3249 | bool has_granularity, uint32_t granularity, |
| 3250 | bool has_buf_size, int64_t buf_size, |
| 3251 | bool has_on_source_error, |
| 3252 | BlockdevOnError on_source_error, |
| 3253 | bool has_on_target_error, |
| 3254 | BlockdevOnError on_target_error, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3255 | bool has_filter_node_name, |
| 3256 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3257 | bool has_copy_mode, MirrorCopyMode copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3258 | bool has_auto_finalize, bool auto_finalize, |
| 3259 | bool has_auto_dismiss, bool auto_dismiss, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3260 | Error **errp) |
| 3261 | { |
| 3262 | BlockDriverState *bs; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3263 | BlockDriverState *target_bs; |
| 3264 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3265 | AioContext *old_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3266 | BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3267 | bool zero_target; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3268 | int ret; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3269 | |
Kevin Wolf | 07eec65 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3270 | bs = qmp_get_root_bs(device, errp); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3271 | if (!bs) { |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3272 | return; |
| 3273 | } |
| 3274 | |
| 3275 | target_bs = bdrv_lookup_bs(target, target, errp); |
| 3276 | if (!target_bs) { |
| 3277 | return; |
| 3278 | } |
| 3279 | |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3280 | zero_target = (sync == MIRROR_SYNC_MODE_FULL); |
| 3281 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3282 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
| 3283 | old_context = bdrv_get_aio_context(target_bs); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3284 | aio_context = bdrv_get_aio_context(bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3285 | aio_context_acquire(old_context); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3286 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3287 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3288 | |
| 3289 | aio_context_release(old_context); |
| 3290 | aio_context_acquire(aio_context); |
| 3291 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3292 | if (ret < 0) { |
| 3293 | goto out; |
| 3294 | } |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3295 | |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3296 | blockdev_mirror_common(has_job_id ? job_id : NULL, bs, target_bs, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3297 | has_replaces, replaces, sync, backing_mode, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3298 | zero_target, has_speed, speed, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3299 | has_granularity, granularity, |
| 3300 | has_buf_size, buf_size, |
| 3301 | has_on_source_error, on_source_error, |
| 3302 | has_on_target_error, on_target_error, |
| 3303 | true, true, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3304 | has_filter_node_name, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3305 | has_copy_mode, copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3306 | has_auto_finalize, auto_finalize, |
| 3307 | has_auto_dismiss, auto_dismiss, |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 3308 | errp); |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3309 | out: |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3310 | aio_context_release(aio_context); |
| 3311 | } |
| 3312 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3313 | /* Get a block job using its ID and acquire its AioContext */ |
| 3314 | static BlockJob *find_block_job(const char *id, AioContext **aio_context, |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3315 | Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3316 | { |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3317 | BlockJob *job; |
| 3318 | |
| 3319 | assert(id != NULL); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3320 | |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 3321 | *aio_context = NULL; |
| 3322 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3323 | job = block_job_get(id); |
| 3324 | |
| 3325 | if (!job) { |
| 3326 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
| 3327 | "Block job '%s' not found", id); |
| 3328 | return NULL; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3329 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3330 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3331 | *aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3332 | aio_context_acquire(*aio_context); |
| 3333 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3334 | return job; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3335 | } |
| 3336 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3337 | 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] | 3338 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3339 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3340 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3341 | |
| 3342 | if (!job) { |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3343 | return; |
| 3344 | } |
| 3345 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3346 | block_job_set_speed(job, speed, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3347 | aio_context_release(aio_context); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3348 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3349 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3350 | void qmp_block_job_cancel(const char *device, |
| 3351 | bool has_force, bool force, Error **errp) |
| 3352 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3353 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3354 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3355 | |
| 3356 | if (!job) { |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3357 | return; |
| 3358 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3359 | |
| 3360 | if (!has_force) { |
| 3361 | force = false; |
| 3362 | } |
| 3363 | |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 3364 | if (job_user_paused(&job->job) && !force) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 3365 | error_setg(errp, "The block job for device '%s' is currently paused", |
| 3366 | device); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3367 | goto out; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3368 | } |
| 3369 | |
| 3370 | trace_qmp_block_job_cancel(job); |
Kevin Wolf | 3d70ff5 | 2018-04-24 16:13:52 +0200 | [diff] [blame] | 3371 | job_user_cancel(&job->job, force, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3372 | out: |
| 3373 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3374 | } |
| 3375 | |
| 3376 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3377 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3378 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3379 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3380 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3381 | if (!job) { |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3382 | return; |
| 3383 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3384 | |
| 3385 | trace_qmp_block_job_pause(job); |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 3386 | job_user_pause(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3387 | aio_context_release(aio_context); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3388 | } |
| 3389 | |
| 3390 | void qmp_block_job_resume(const char *device, Error **errp) |
| 3391 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3392 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3393 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3394 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3395 | if (!job) { |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 3396 | return; |
| 3397 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3398 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3399 | trace_qmp_block_job_resume(job); |
Kevin Wolf | b15de82 | 2018-04-18 17:10:26 +0200 | [diff] [blame] | 3400 | job_user_resume(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3401 | aio_context_release(aio_context); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3402 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3403 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3404 | void qmp_block_job_complete(const char *device, Error **errp) |
| 3405 | { |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3406 | AioContext *aio_context; |
Markus Armbruster | 24d6bff | 2015-01-29 10:36:58 +0100 | [diff] [blame] | 3407 | BlockJob *job = find_block_job(device, &aio_context, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3408 | |
| 3409 | if (!job) { |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3410 | return; |
| 3411 | } |
| 3412 | |
| 3413 | trace_qmp_block_job_complete(job); |
Kevin Wolf | 3453d97 | 2018-04-23 12:24:16 +0200 | [diff] [blame] | 3414 | job_complete(&job->job, errp); |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3415 | aio_context_release(aio_context); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3416 | } |
| 3417 | |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3418 | void qmp_block_job_finalize(const char *id, Error **errp) |
| 3419 | { |
| 3420 | AioContext *aio_context; |
| 3421 | BlockJob *job = find_block_job(id, &aio_context, errp); |
| 3422 | |
| 3423 | if (!job) { |
| 3424 | return; |
| 3425 | } |
| 3426 | |
| 3427 | trace_qmp_block_job_finalize(job); |
Stefan Reiter | b660a84 | 2020-04-07 13:56:49 +0200 | [diff] [blame] | 3428 | job_ref(&job->job); |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 3429 | job_finalize(&job->job, errp); |
Stefan Reiter | b660a84 | 2020-04-07 13:56:49 +0200 | [diff] [blame] | 3430 | |
| 3431 | /* |
| 3432 | * Job's context might have changed via job_finalize (and job_txn_apply |
| 3433 | * automatically acquires the new one), so make sure we release the correct |
| 3434 | * one. |
| 3435 | */ |
| 3436 | aio_context = blk_get_aio_context(job->blk); |
| 3437 | job_unref(&job->job); |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3438 | aio_context_release(aio_context); |
| 3439 | } |
| 3440 | |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3441 | void qmp_block_job_dismiss(const char *id, Error **errp) |
| 3442 | { |
| 3443 | AioContext *aio_context; |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3444 | BlockJob *bjob = find_block_job(id, &aio_context, errp); |
| 3445 | Job *job; |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3446 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3447 | if (!bjob) { |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3448 | return; |
| 3449 | } |
| 3450 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3451 | trace_qmp_block_job_dismiss(bjob); |
| 3452 | job = &bjob->job; |
| 3453 | job_dismiss(&job, errp); |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3454 | aio_context_release(aio_context); |
| 3455 | } |
| 3456 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3457 | void qmp_change_backing_file(const char *device, |
| 3458 | const char *image_node_name, |
| 3459 | const char *backing_file, |
| 3460 | Error **errp) |
| 3461 | { |
| 3462 | BlockDriverState *bs = NULL; |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3463 | AioContext *aio_context; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3464 | BlockDriverState *image_bs = NULL; |
| 3465 | Error *local_err = NULL; |
| 3466 | bool ro; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3467 | int ret; |
| 3468 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3469 | bs = qmp_get_root_bs(device, errp); |
| 3470 | if (!bs) { |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3471 | return; |
| 3472 | } |
| 3473 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3474 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3475 | aio_context_acquire(aio_context); |
| 3476 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3477 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
| 3478 | if (local_err) { |
| 3479 | error_propagate(errp, local_err); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3480 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3481 | } |
| 3482 | |
| 3483 | if (!image_bs) { |
| 3484 | error_setg(errp, "image file not found"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3485 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3486 | } |
| 3487 | |
| 3488 | if (bdrv_find_base(image_bs) == image_bs) { |
| 3489 | error_setg(errp, "not allowing backing file change on an image " |
| 3490 | "without a backing file"); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3491 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3492 | } |
| 3493 | |
| 3494 | /* even though we are not necessarily operating on bs, we need it to |
| 3495 | * determine if block ops are currently prohibited on the chain */ |
| 3496 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3497 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3498 | } |
| 3499 | |
| 3500 | /* final sanity check */ |
| 3501 | if (!bdrv_chain_contains(bs, image_bs)) { |
| 3502 | error_setg(errp, "'%s' and image file are not in the same chain", |
| 3503 | device); |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3504 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3505 | } |
| 3506 | |
| 3507 | /* if not r/w, reopen to make r/w */ |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3508 | ro = bdrv_is_read_only(image_bs); |
| 3509 | |
| 3510 | if (ro) { |
Alberto Garcia | 051a60f | 2018-11-12 16:00:38 +0200 | [diff] [blame] | 3511 | if (bdrv_reopen_set_read_only(image_bs, false, errp) != 0) { |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3512 | goto out; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3513 | } |
| 3514 | } |
| 3515 | |
| 3516 | ret = bdrv_change_backing_file(image_bs, backing_file, |
Eric Blake | e54ee1b | 2020-07-06 15:39:53 -0500 | [diff] [blame] | 3517 | image_bs->drv ? image_bs->drv->format_name : "", |
| 3518 | false); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3519 | |
| 3520 | if (ret < 0) { |
| 3521 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", |
| 3522 | backing_file); |
| 3523 | /* don't exit here, so we can try to restore open flags if |
| 3524 | * appropriate */ |
| 3525 | } |
| 3526 | |
| 3527 | if (ro) { |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 3528 | bdrv_reopen_set_read_only(image_bs, true, errp); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3529 | } |
Stefan Hajnoczi | 729962f | 2014-11-19 14:19:45 +0000 | [diff] [blame] | 3530 | |
| 3531 | out: |
| 3532 | aio_context_release(aio_context); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3533 | } |
| 3534 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3535 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 3536 | { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3537 | BlockDriverState *bs; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3538 | QObject *obj; |
Daniel P. Berrange | 7d5e199 | 2016-09-30 15:45:28 +0100 | [diff] [blame] | 3539 | Visitor *v = qobject_output_visitor_new(&obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3540 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3541 | |
Markus Armbruster | 1f58424 | 2020-04-24 10:43:35 +0200 | [diff] [blame] | 3542 | visit_type_BlockdevOptions(v, NULL, &options, &error_abort); |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 3543 | visit_complete(v, &obj); |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 3544 | qdict = qobject_to(QDict, obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3545 | |
| 3546 | qdict_flatten(qdict); |
| 3547 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3548 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 3549 | error_setg(errp, "'node-name' must be specified for the root node"); |
| 3550 | goto fail; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3551 | } |
| 3552 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3553 | bs = bds_tree_init(qdict, errp); |
| 3554 | if (!bs) { |
| 3555 | goto fail; |
| 3556 | } |
| 3557 | |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 3558 | bdrv_set_monitor_owned(bs); |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3559 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3560 | fail: |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 3561 | visit_free(v); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3562 | } |
| 3563 | |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3564 | void qmp_x_blockdev_reopen(BlockdevOptions *options, Error **errp) |
| 3565 | { |
| 3566 | BlockDriverState *bs; |
| 3567 | AioContext *ctx; |
| 3568 | QObject *obj; |
| 3569 | Visitor *v = qobject_output_visitor_new(&obj); |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3570 | BlockReopenQueue *queue; |
| 3571 | QDict *qdict; |
| 3572 | |
| 3573 | /* Check for the selected node name */ |
| 3574 | if (!options->has_node_name) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 3575 | error_setg(errp, "node-name not specified"); |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3576 | goto fail; |
| 3577 | } |
| 3578 | |
| 3579 | bs = bdrv_find_node(options->node_name); |
| 3580 | if (!bs) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 3581 | error_setg(errp, "Failed to find node with node-name='%s'", |
| 3582 | options->node_name); |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3583 | goto fail; |
| 3584 | } |
| 3585 | |
| 3586 | /* Put all options in a QDict and flatten it */ |
Markus Armbruster | 1f58424 | 2020-04-24 10:43:35 +0200 | [diff] [blame] | 3587 | visit_type_BlockdevOptions(v, NULL, &options, &error_abort); |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3588 | visit_complete(v, &obj); |
| 3589 | qdict = qobject_to(QDict, obj); |
| 3590 | |
| 3591 | qdict_flatten(qdict); |
| 3592 | |
| 3593 | /* Perform the reopen operation */ |
| 3594 | ctx = bdrv_get_aio_context(bs); |
| 3595 | aio_context_acquire(ctx); |
| 3596 | bdrv_subtree_drained_begin(bs); |
| 3597 | queue = bdrv_reopen_queue(NULL, bs, qdict, false); |
| 3598 | bdrv_reopen_multiple(queue, errp); |
| 3599 | bdrv_subtree_drained_end(bs); |
| 3600 | aio_context_release(ctx); |
| 3601 | |
| 3602 | fail: |
| 3603 | visit_free(v); |
| 3604 | } |
| 3605 | |
Markus Armbruster | 79b7a77 | 2017-03-21 17:53:28 +0100 | [diff] [blame] | 3606 | void qmp_blockdev_del(const char *node_name, Error **errp) |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3607 | { |
| 3608 | AioContext *aio_context; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3609 | BlockDriverState *bs; |
| 3610 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3611 | bs = bdrv_find_node(node_name); |
| 3612 | if (!bs) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 3613 | error_setg(errp, "Failed to find node with node-name='%s'", node_name); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3614 | return; |
| 3615 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3616 | if (bdrv_has_blk(bs)) { |
| 3617 | error_setg(errp, "Node %s is in use", node_name); |
| 3618 | return; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3619 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3620 | aio_context = bdrv_get_aio_context(bs); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3621 | aio_context_acquire(aio_context); |
| 3622 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3623 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
| 3624 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3625 | } |
| 3626 | |
Paolo Bonzini | 70537ed | 2018-12-06 23:00:09 +0100 | [diff] [blame] | 3627 | if (!QTAILQ_IN_USE(bs, monitor_list)) { |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3628 | error_setg(errp, "Node %s is not owned by the monitor", |
| 3629 | bs->node_name); |
| 3630 | goto out; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3631 | } |
| 3632 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3633 | if (bs->refcnt > 1) { |
| 3634 | error_setg(errp, "Block device %s is in use", |
| 3635 | bdrv_get_device_or_node_name(bs)); |
| 3636 | goto out; |
| 3637 | } |
| 3638 | |
| 3639 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
| 3640 | bdrv_unref(bs); |
| 3641 | |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3642 | out: |
| 3643 | aio_context_release(aio_context); |
| 3644 | } |
| 3645 | |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3646 | static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs, |
| 3647 | const char *child_name) |
| 3648 | { |
| 3649 | BdrvChild *child; |
| 3650 | |
| 3651 | QLIST_FOREACH(child, &parent_bs->children, next) { |
| 3652 | if (strcmp(child->name, child_name) == 0) { |
| 3653 | return child; |
| 3654 | } |
| 3655 | } |
| 3656 | |
| 3657 | return NULL; |
| 3658 | } |
| 3659 | |
| 3660 | void qmp_x_blockdev_change(const char *parent, bool has_child, |
| 3661 | const char *child, bool has_node, |
| 3662 | const char *node, Error **errp) |
| 3663 | { |
| 3664 | BlockDriverState *parent_bs, *new_bs = NULL; |
| 3665 | BdrvChild *p_child; |
| 3666 | |
| 3667 | parent_bs = bdrv_lookup_bs(parent, parent, errp); |
| 3668 | if (!parent_bs) { |
| 3669 | return; |
| 3670 | } |
| 3671 | |
| 3672 | if (has_child == has_node) { |
| 3673 | if (has_child) { |
| 3674 | error_setg(errp, "The parameters child and node are in conflict"); |
| 3675 | } else { |
| 3676 | error_setg(errp, "Either child or node must be specified"); |
| 3677 | } |
| 3678 | return; |
| 3679 | } |
| 3680 | |
| 3681 | if (has_child) { |
| 3682 | p_child = bdrv_find_child(parent_bs, child); |
| 3683 | if (!p_child) { |
| 3684 | error_setg(errp, "Node '%s' does not have child '%s'", |
| 3685 | parent, child); |
| 3686 | return; |
| 3687 | } |
| 3688 | bdrv_del_child(parent_bs, p_child, errp); |
| 3689 | } |
| 3690 | |
| 3691 | if (has_node) { |
| 3692 | new_bs = bdrv_find_node(node); |
| 3693 | if (!new_bs) { |
| 3694 | error_setg(errp, "Node '%s' not found", node); |
| 3695 | return; |
| 3696 | } |
| 3697 | bdrv_add_child(parent_bs, new_bs, errp); |
| 3698 | } |
| 3699 | } |
| 3700 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3701 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 3702 | { |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3703 | BlockJobInfoList *head = NULL, **tail = &head; |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 3704 | BlockJob *job; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3705 | |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 3706 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3707 | BlockJobInfo *value; |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3708 | AioContext *aio_context; |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 3709 | |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3710 | if (block_job_is_internal(job)) { |
| 3711 | continue; |
| 3712 | } |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3713 | aio_context = blk_get_aio_context(job->blk); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 3714 | aio_context_acquire(aio_context); |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3715 | value = block_job_query(job, errp); |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 3716 | aio_context_release(aio_context); |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3717 | if (!value) { |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3718 | qapi_free_BlockJobInfoList(head); |
| 3719 | return NULL; |
| 3720 | } |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3721 | QAPI_LIST_APPEND(tail, value); |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3722 | } |
| 3723 | |
| 3724 | return head; |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3725 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3726 | |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3727 | void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 3728 | bool has_force, bool force, Error **errp) |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3729 | { |
| 3730 | AioContext *old_context; |
| 3731 | AioContext *new_context; |
| 3732 | BlockDriverState *bs; |
| 3733 | |
| 3734 | bs = bdrv_find_node(node_name); |
| 3735 | if (!bs) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 3736 | error_setg(errp, "Failed to find node with node-name='%s'", node_name); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3737 | return; |
| 3738 | } |
| 3739 | |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 3740 | /* Protects against accidents. */ |
| 3741 | if (!(has_force && force) && bdrv_has_blk(bs)) { |
| 3742 | error_setg(errp, "Node %s is associated with a BlockBackend and could " |
| 3743 | "be in use (use force=true to override this check)", |
| 3744 | node_name); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3745 | return; |
| 3746 | } |
| 3747 | |
| 3748 | if (iothread->type == QTYPE_QSTRING) { |
| 3749 | IOThread *obj = iothread_by_id(iothread->u.s); |
| 3750 | if (!obj) { |
| 3751 | error_setg(errp, "Cannot find iothread %s", iothread->u.s); |
| 3752 | return; |
| 3753 | } |
| 3754 | |
| 3755 | new_context = iothread_get_aio_context(obj); |
| 3756 | } else { |
| 3757 | new_context = qemu_get_aio_context(); |
| 3758 | } |
| 3759 | |
| 3760 | old_context = bdrv_get_aio_context(bs); |
| 3761 | aio_context_acquire(old_context); |
| 3762 | |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3763 | bdrv_try_set_aio_context(bs, new_context, errp); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3764 | |
| 3765 | aio_context_release(old_context); |
| 3766 | } |
| 3767 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3768 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3769 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3770 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3771 | .desc = { |
| 3772 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3773 | .name = "snapshot", |
| 3774 | .type = QEMU_OPT_BOOL, |
| 3775 | .help = "enable/disable snapshot mode", |
| 3776 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3777 | .name = "aio", |
| 3778 | .type = QEMU_OPT_STRING, |
Aarushi Mehta | f80f267 | 2020-01-20 14:18:50 +0000 | [diff] [blame] | 3779 | .help = "host AIO implementation (threads, native, io_uring)", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3780 | },{ |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 3781 | .name = BDRV_OPT_CACHE_WB, |
| 3782 | .type = QEMU_OPT_BOOL, |
| 3783 | .help = "Enable writeback mode", |
| 3784 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3785 | .name = "format", |
| 3786 | .type = QEMU_OPT_STRING, |
| 3787 | .help = "disk format (raw, qcow2, ...)", |
| 3788 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3789 | .name = "rerror", |
| 3790 | .type = QEMU_OPT_STRING, |
| 3791 | .help = "read error action", |
| 3792 | },{ |
| 3793 | .name = "werror", |
| 3794 | .type = QEMU_OPT_STRING, |
| 3795 | .help = "write error action", |
| 3796 | },{ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 3797 | .name = BDRV_OPT_READ_ONLY, |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3798 | .type = QEMU_OPT_BOOL, |
| 3799 | .help = "open drive file as read-only", |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 3800 | }, |
| 3801 | |
| 3802 | THROTTLE_OPTS, |
| 3803 | |
| 3804 | { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 3805 | .name = "throttling.group", |
| 3806 | .type = QEMU_OPT_STRING, |
| 3807 | .help = "name of the block throttling group", |
| 3808 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3809 | .name = "copy-on-read", |
| 3810 | .type = QEMU_OPT_BOOL, |
| 3811 | .help = "copy read data from backing file into image file", |
Peter Lieven | 465bee1 | 2014-05-18 00:58:19 +0200 | [diff] [blame] | 3812 | },{ |
| 3813 | .name = "detect-zeroes", |
| 3814 | .type = QEMU_OPT_STRING, |
| 3815 | .help = "try to optimize zero writes (off, on, unmap)", |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 3816 | },{ |
| 3817 | .name = "stats-account-invalid", |
| 3818 | .type = QEMU_OPT_BOOL, |
| 3819 | .help = "whether to account for invalid I/O operations " |
| 3820 | "in the statistics", |
| 3821 | },{ |
| 3822 | .name = "stats-account-failed", |
| 3823 | .type = QEMU_OPT_BOOL, |
| 3824 | .help = "whether to account for failed I/O operations " |
| 3825 | "in the statistics", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3826 | }, |
| 3827 | { /* end of list */ } |
| 3828 | }, |
| 3829 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3830 | |
| 3831 | QemuOptsList qemu_drive_opts = { |
| 3832 | .name = "drive", |
| 3833 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 3834 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 3835 | /* |
| 3836 | * no elements => accept any params |
| 3837 | * validation will happen later |
| 3838 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3839 | { /* end of list */ } |
| 3840 | }, |
| 3841 | }; |