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" |
Markus Armbruster | e2c1c34 | 2022-12-21 14:35:49 +0100 | [diff] [blame] | 38 | #include "block/dirty-bitmap.h" |
Max Reitz | 609f45e | 2018-06-14 21:14:28 +0200 | [diff] [blame] | 39 | #include "block/qdict.h" |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 40 | #include "block/throttle-groups.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 41 | #include "monitor/monitor.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 42 | #include "qemu/error-report.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 43 | #include "qemu/option.h" |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 44 | #include "qemu/qemu-print.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 45 | #include "qemu/config-file.h" |
Markus Armbruster | 9af2398 | 2018-02-11 10:36:01 +0100 | [diff] [blame] | 46 | #include "qapi/qapi-commands-block.h" |
| 47 | #include "qapi/qapi-commands-transaction.h" |
| 48 | #include "qapi/qapi-visit-block-core.h" |
Markus Armbruster | 452fcdb | 2018-02-01 12:18:39 +0100 | [diff] [blame] | 49 | #include "qapi/qmp/qdict.h" |
Markus Armbruster | 15280c3 | 2018-02-01 12:18:36 +0100 | [diff] [blame] | 50 | #include "qapi/qmp/qnum.h" |
Markus Armbruster | 6b67395 | 2018-02-01 12:18:35 +0100 | [diff] [blame] | 51 | #include "qapi/qmp/qstring.h" |
Markus Armbruster | e688df6 | 2018-02-01 12:18:31 +0100 | [diff] [blame] | 52 | #include "qapi/error.h" |
Markus Armbruster | cc7a8ea | 2015-03-17 17:22:46 +0100 | [diff] [blame] | 53 | #include "qapi/qmp/qerror.h" |
Markus Armbruster | 47e6b29 | 2018-02-01 12:18:38 +0100 | [diff] [blame] | 54 | #include "qapi/qmp/qlist.h" |
Daniel P. Berrange | b3db211 | 2016-09-30 15:45:27 +0100 | [diff] [blame] | 55 | #include "qapi/qobject-output-visitor.h" |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 56 | #include "sysemu/sysemu.h" |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 57 | #include "sysemu/iothread.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 58 | #include "block/block_int.h" |
Daniel P. Berrange | 0ab8ed1 | 2017-01-25 16:14:15 +0000 | [diff] [blame] | 59 | #include "block/trace.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 | |
Emanuele Giuseppe Esposito | ebc2752 | 2022-03-03 10:15:56 -0500 | [diff] [blame] | 67 | /* Protected by BQL */ |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 68 | QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 69 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); |
| 70 | |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 71 | void bdrv_set_monitor_owned(BlockDriverState *bs) |
| 72 | { |
Emanuele Giuseppe Esposito | b4ad82a | 2022-03-03 10:15:57 -0500 | [diff] [blame] | 73 | GLOBAL_STATE_CODE(); |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 74 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
| 75 | } |
| 76 | |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 77 | static const char *const if_name[IF_COUNT] = { |
| 78 | [IF_NONE] = "none", |
| 79 | [IF_IDE] = "ide", |
| 80 | [IF_SCSI] = "scsi", |
| 81 | [IF_FLOPPY] = "floppy", |
| 82 | [IF_PFLASH] = "pflash", |
| 83 | [IF_MTD] = "mtd", |
| 84 | [IF_SD] = "sd", |
| 85 | [IF_VIRTIO] = "virtio", |
| 86 | [IF_XEN] = "xen", |
| 87 | }; |
| 88 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 89 | static int if_max_devs[IF_COUNT] = { |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 90 | /* |
| 91 | * Do not change these numbers! They govern how drive option |
| 92 | * index maps to unit and bus. That mapping is ABI. |
| 93 | * |
Wei Jiangang | 547cb15 | 2016-04-26 18:12:43 +0800 | [diff] [blame] | 94 | * All controllers used to implement if=T drives need to support |
Markus Armbruster | 27d6bf4 | 2011-01-28 11:21:40 +0100 | [diff] [blame] | 95 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
| 96 | * Otherwise, some index values map to "impossible" bus, unit |
| 97 | * values. |
| 98 | * |
| 99 | * For instance, if you change [IF_SCSI] to 255, -drive |
| 100 | * if=scsi,index=12 no longer means bus=1,unit=5, but |
| 101 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), |
| 102 | * the drive can't be set up. Regression. |
| 103 | */ |
| 104 | [IF_IDE] = 2, |
| 105 | [IF_SCSI] = 7, |
Markus Armbruster | 1960966 | 2011-01-28 11:21:39 +0100 | [diff] [blame] | 106 | }; |
| 107 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 108 | /** |
| 109 | * Boards may call this to offer board-by-board overrides |
| 110 | * of the default, global values. |
| 111 | */ |
| 112 | void override_max_devs(BlockInterfaceType type, int max_devs) |
| 113 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 114 | BlockBackend *blk; |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 115 | DriveInfo *dinfo; |
| 116 | |
Emanuele Giuseppe Esposito | c5be744 | 2022-03-03 10:16:06 -0500 | [diff] [blame] | 117 | GLOBAL_STATE_CODE(); |
| 118 | |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 119 | if (max_devs <= 0) { |
| 120 | return; |
| 121 | } |
| 122 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 123 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 124 | dinfo = blk_legacy_dinfo(blk); |
John Snow | 21dff8c | 2014-10-01 14:19:25 -0400 | [diff] [blame] | 125 | if (dinfo->type == type) { |
| 126 | fprintf(stderr, "Cannot override units-per-bus property of" |
| 127 | " the %s interface, because a drive of that type has" |
| 128 | " already been added.\n", if_name[type]); |
| 129 | g_assert_not_reached(); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | if_max_devs[type] = max_devs; |
| 134 | } |
| 135 | |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 136 | /* |
| 137 | * We automatically delete the drive when a device using it gets |
| 138 | * unplugged. Questionable feature, but we can't just drop it. |
| 139 | * Device models call blockdev_mark_auto_del() to schedule the |
| 140 | * automatic deletion, and generic qdev code calls blockdev_auto_del() |
| 141 | * when deletion is actually safe. |
| 142 | */ |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 143 | void blockdev_mark_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 144 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 145 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Vladimir Sementsov-Ogievskiy | 8164102 | 2019-06-06 18:41:31 +0300 | [diff] [blame] | 146 | BlockJob *job; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 147 | |
Emanuele Giuseppe Esposito | c5be744 | 2022-03-03 10:16:06 -0500 | [diff] [blame] | 148 | GLOBAL_STATE_CODE(); |
| 149 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 150 | if (!dinfo) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 151 | return; |
| 152 | } |
| 153 | |
Emanuele Giuseppe Esposito | 880eeec | 2022-09-26 05:32:04 -0400 | [diff] [blame] | 154 | JOB_LOCK_GUARD(); |
| 155 | |
Kevin Wolf | e262687 | 2023-05-03 16:01:42 +0200 | [diff] [blame] | 156 | do { |
| 157 | job = block_job_next_locked(NULL); |
| 158 | while (job && (job->job.cancelled || |
| 159 | job->job.deferred_to_main_loop || |
| 160 | !block_job_has_bdrv(job, blk_bs(blk)))) |
| 161 | { |
| 162 | job = block_job_next_locked(job); |
| 163 | } |
| 164 | if (job) { |
| 165 | /* |
| 166 | * This drops the job lock temporarily and polls, so we need to |
| 167 | * restart processing the list from the start after this. |
| 168 | */ |
Emanuele Giuseppe Esposito | 880eeec | 2022-09-26 05:32:04 -0400 | [diff] [blame] | 169 | job_cancel_locked(&job->job, false); |
Max Reitz | 5433c24 | 2015-10-19 17:53:29 +0200 | [diff] [blame] | 170 | } |
Kevin Wolf | e262687 | 2023-05-03 16:01:42 +0200 | [diff] [blame] | 171 | } while (job); |
Stefan Hajnoczi | 91fddb0 | 2014-10-21 12:03:52 +0100 | [diff] [blame] | 172 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 173 | dinfo->auto_del = 1; |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 174 | } |
| 175 | |
Markus Armbruster | 4be7463 | 2014-10-07 13:59:18 +0200 | [diff] [blame] | 176 | void blockdev_auto_del(BlockBackend *blk) |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 177 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 178 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
Emanuele Giuseppe Esposito | c5be744 | 2022-03-03 10:16:06 -0500 | [diff] [blame] | 179 | GLOBAL_STATE_CODE(); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 180 | |
Ryan Harper | 0fc0f1f | 2010-12-08 10:05:00 -0600 | [diff] [blame] | 181 | if (dinfo && dinfo->auto_del) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 182 | monitor_remove_blk(blk); |
Markus Armbruster | b9fe8a7 | 2014-10-07 13:59:09 +0200 | [diff] [blame] | 183 | blk_unref(blk); |
Markus Armbruster | 14bafc5 | 2010-06-25 08:09:10 +0200 | [diff] [blame] | 184 | } |
| 185 | } |
| 186 | |
Markus Armbruster | 505a7fb | 2011-01-28 11:21:43 +0100 | [diff] [blame] | 187 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
| 188 | { |
| 189 | int max_devs = if_max_devs[type]; |
| 190 | return max_devs ? index / max_devs : 0; |
| 191 | } |
| 192 | |
| 193 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
| 194 | { |
| 195 | int max_devs = if_max_devs[type]; |
| 196 | return max_devs ? index % max_devs : index; |
| 197 | } |
| 198 | |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 199 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
Markus Armbruster | 5645b0f | 2011-01-31 11:50:09 +0100 | [diff] [blame] | 200 | const char *optstr) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 201 | { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 202 | QemuOpts *opts; |
| 203 | |
Emanuele Giuseppe Esposito | c5be744 | 2022-03-03 10:16:06 -0500 | [diff] [blame] | 204 | GLOBAL_STATE_CODE(); |
| 205 | |
Emanuele Giuseppe Esposito | cc67f28 | 2021-12-15 07:11:39 -0500 | [diff] [blame] | 206 | opts = qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 207 | if (!opts) { |
| 208 | return NULL; |
| 209 | } |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 210 | if (type != IF_DEFAULT) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 211 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 212 | } |
| 213 | if (index >= 0) { |
Markus Armbruster | a8b18f8 | 2015-02-13 15:50:43 +0100 | [diff] [blame] | 214 | qemu_opt_set_number(opts, "index", index, &error_abort); |
Markus Armbruster | 2292dda | 2011-01-28 11:21:41 +0100 | [diff] [blame] | 215 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 216 | if (file) |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 217 | qemu_opt_set(opts, "file", file, &error_abort); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 218 | return opts; |
| 219 | } |
| 220 | |
| 221 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
| 222 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 223 | BlockBackend *blk; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 224 | DriveInfo *dinfo; |
| 225 | |
Emanuele Giuseppe Esposito | c5be744 | 2022-03-03 10:16:06 -0500 | [diff] [blame] | 226 | GLOBAL_STATE_CODE(); |
| 227 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 228 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 229 | dinfo = blk_legacy_dinfo(blk); |
| 230 | if (dinfo && dinfo->type == type |
| 231 | && dinfo->bus == bus && dinfo->unit == unit) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 232 | return dinfo; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 233 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | return NULL; |
| 237 | } |
| 238 | |
Markus Armbruster | fe9f70a | 2021-03-09 17:12:13 +0100 | [diff] [blame] | 239 | /* |
| 240 | * Check board claimed all -drive that are meant to be claimed. |
| 241 | * Fatal error if any remain unclaimed. |
| 242 | */ |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 243 | void drive_check_orphaned(void) |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 244 | { |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 245 | BlockBackend *blk; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 246 | DriveInfo *dinfo; |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 247 | Location loc; |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 248 | bool orphans = false; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 249 | |
Emanuele Giuseppe Esposito | c5be744 | 2022-03-03 10:16:06 -0500 | [diff] [blame] | 250 | GLOBAL_STATE_CODE(); |
| 251 | |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 252 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 253 | dinfo = blk_legacy_dinfo(blk); |
Markus Armbruster | fe9f70a | 2021-03-09 17:12:13 +0100 | [diff] [blame] | 254 | /* |
| 255 | * Ignore default drives, because we create certain default |
| 256 | * drives unconditionally, then leave them unclaimed. Not the |
| 257 | * users fault. |
David Woodhouse | d3256f8 | 2023-10-16 13:01:39 +0100 | [diff] [blame] | 258 | * Ignore IF_VIRTIO or IF_XEN, because it gets desugared into |
| 259 | * -device, so we can leave failing to -device. |
Markus Armbruster | fe9f70a | 2021-03-09 17:12:13 +0100 | [diff] [blame] | 260 | * Ignore IF_NONE, because leaving unclaimed IF_NONE remains |
| 261 | * available for device_add is a feature. |
| 262 | */ |
| 263 | if (dinfo->is_default || dinfo->type == IF_VIRTIO |
David Woodhouse | d3256f8 | 2023-10-16 13:01:39 +0100 | [diff] [blame] | 264 | || dinfo->type == IF_XEN || dinfo->type == IF_NONE) { |
Markus Armbruster | a1b40bd | 2020-06-22 11:42:19 +0200 | [diff] [blame] | 265 | continue; |
| 266 | } |
| 267 | if (!blk_get_attached_dev(blk)) { |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 268 | loc_push_none(&loc); |
| 269 | qemu_opts_loc_restore(dinfo->opts); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 270 | error_report("machine type does not support" |
Markus Armbruster | 664cc62 | 2017-02-15 11:05:45 +0100 | [diff] [blame] | 271 | " if=%s,bus=%d,unit=%d", |
| 272 | if_name[dinfo->type], dinfo->bus, dinfo->unit); |
| 273 | loc_pop(&loc); |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 274 | orphans = true; |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 275 | } |
| 276 | } |
| 277 | |
Markus Armbruster | 720b8dc | 2017-02-15 11:05:46 +0100 | [diff] [blame] | 278 | if (orphans) { |
| 279 | exit(1); |
| 280 | } |
John Snow | a66c9dc | 2014-10-01 14:19:24 -0400 | [diff] [blame] | 281 | } |
| 282 | |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 283 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
| 284 | { |
Emanuele Giuseppe Esposito | c5be744 | 2022-03-03 10:16:06 -0500 | [diff] [blame] | 285 | GLOBAL_STATE_CODE(); |
Markus Armbruster | f1bd51a | 2011-01-28 11:21:44 +0100 | [diff] [blame] | 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 | |
Emanuele Giuseppe Esposito | c5be744 | 2022-03-03 10:16:06 -0500 | [diff] [blame] | 297 | GLOBAL_STATE_CODE(); |
| 298 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 299 | max_bus = -1; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 300 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
| 301 | dinfo = blk_legacy_dinfo(blk); |
| 302 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 303 | max_bus = dinfo->bus; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 304 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 305 | } |
| 306 | return max_bus; |
| 307 | } |
| 308 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 309 | static void bdrv_format_print(void *opaque, const char *name) |
| 310 | { |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 311 | qemu_printf(" %s", name); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 312 | } |
| 313 | |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 314 | typedef struct { |
| 315 | QEMUBH *bh; |
Fam Zheng | fa510eb | 2013-08-23 09:14:51 +0800 | [diff] [blame] | 316 | BlockDriverState *bs; |
| 317 | } BDRVPutRefBH; |
Stefan Hajnoczi | aa398a5 | 2012-01-18 14:40:50 +0000 | [diff] [blame] | 318 | |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 319 | 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] | 320 | { |
| 321 | if (!strcmp(buf, "ignore")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 322 | return BLOCKDEV_ON_ERROR_IGNORE; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 323 | } else if (!is_read && !strcmp(buf, "enospc")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 324 | return BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 325 | } else if (!strcmp(buf, "stop")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 326 | return BLOCKDEV_ON_ERROR_STOP; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 327 | } else if (!strcmp(buf, "report")) { |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 328 | return BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 329 | } else { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 330 | error_setg(errp, "'%s' invalid %s error action", |
| 331 | buf, is_read ? "read" : "write"); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 332 | return -1; |
| 333 | } |
| 334 | } |
| 335 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 336 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
| 337 | Error **errp) |
| 338 | { |
| 339 | const QListEntry *entry; |
| 340 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { |
| 341 | switch (qobject_type(entry->value)) { |
| 342 | |
| 343 | case QTYPE_QSTRING: { |
Eric Blake | bd1386c | 2023-05-22 14:04:29 -0500 | [diff] [blame] | 344 | uint64_t length; |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 345 | const char *str = qstring_get_str(qobject_to(QString, |
| 346 | entry->value)); |
Eric Blake | bd1386c | 2023-05-22 14:04:29 -0500 | [diff] [blame] | 347 | if (parse_uint_full(str, 10, &length) == 0 && |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 348 | length > 0 && length <= UINT_MAX) { |
| 349 | block_acct_add_interval(stats, (unsigned) length); |
| 350 | } else { |
| 351 | error_setg(errp, "Invalid interval length: %s", str); |
| 352 | return false; |
| 353 | } |
| 354 | break; |
| 355 | } |
| 356 | |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 357 | case QTYPE_QNUM: { |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 358 | int64_t length = qnum_get_int(qobject_to(QNum, entry->value)); |
Marc-André Lureau | 01b2ffc | 2017-06-07 20:35:58 +0400 | [diff] [blame] | 359 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 360 | if (length > 0 && length <= UINT_MAX) { |
| 361 | block_acct_add_interval(stats, (unsigned) length); |
| 362 | } else { |
| 363 | error_setg(errp, "Invalid interval length: %" PRId64, length); |
| 364 | return false; |
| 365 | } |
| 366 | break; |
| 367 | } |
| 368 | |
| 369 | default: |
| 370 | error_setg(errp, "The specification of stats-intervals is invalid"); |
| 371 | return false; |
| 372 | } |
| 373 | } |
| 374 | return true; |
| 375 | } |
| 376 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 377 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
| 378 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 379 | /* All parameters but @opts are optional and may be set to NULL. */ |
| 380 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, |
| 381 | const char **throttling_group, ThrottleConfig *throttle_cfg, |
| 382 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) |
| 383 | { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 384 | Error *local_error = NULL; |
| 385 | const char *aio; |
| 386 | |
| 387 | if (bdrv_flags) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 388 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
| 389 | *bdrv_flags |= BDRV_O_COPY_ON_READ; |
| 390 | } |
| 391 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 392 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
Aarushi Mehta | f80f267 | 2020-01-20 14:18:50 +0000 | [diff] [blame] | 393 | if (bdrv_parse_aio(aio, bdrv_flags) < 0) { |
| 394 | error_setg(errp, "invalid aio option"); |
| 395 | return; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 396 | } |
| 397 | } |
| 398 | } |
| 399 | |
| 400 | /* disk I/O throttling */ |
| 401 | if (throttling_group) { |
| 402 | *throttling_group = qemu_opt_get(opts, "throttling.group"); |
| 403 | } |
| 404 | |
| 405 | if (throttle_cfg) { |
Alberto Garcia | 1588ab5 | 2016-02-18 12:27:00 +0200 | [diff] [blame] | 406 | throttle_config_init(throttle_cfg); |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 407 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
| 408 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
| 409 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = |
| 410 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
| 411 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = |
| 412 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
| 413 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = |
| 414 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
| 415 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = |
| 416 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
| 417 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = |
| 418 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
| 419 | |
| 420 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = |
| 421 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); |
| 422 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = |
| 423 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); |
| 424 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = |
| 425 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); |
| 426 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = |
| 427 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); |
| 428 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = |
| 429 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); |
| 430 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = |
| 431 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); |
| 432 | |
Alberto Garcia | 8a0fc18 | 2016-02-18 12:27:02 +0200 | [diff] [blame] | 433 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
| 434 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); |
| 435 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = |
| 436 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); |
| 437 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = |
| 438 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); |
| 439 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = |
| 440 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); |
| 441 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = |
| 442 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); |
| 443 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = |
| 444 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); |
| 445 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 446 | throttle_cfg->op_size = |
| 447 | qemu_opt_get_number(opts, "throttling.iops-size", 0); |
| 448 | |
Alberto Garcia | d585108 | 2016-02-18 12:26:59 +0200 | [diff] [blame] | 449 | if (!throttle_is_valid(throttle_cfg, errp)) { |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 450 | return; |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | if (detect_zeroes) { |
| 455 | *detect_zeroes = |
Marc-André Lureau | f7abe0e | 2017-08-24 10:46:10 +0200 | [diff] [blame] | 456 | qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 457 | qemu_opt_get(opts, "detect-zeroes"), |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 458 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
| 459 | &local_error); |
| 460 | if (local_error) { |
| 461 | error_propagate(errp, local_error); |
| 462 | return; |
| 463 | } |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 464 | } |
| 465 | } |
| 466 | |
Denis V. Lunev | b2aaf35 | 2022-08-24 11:50:43 +0200 | [diff] [blame] | 467 | static OnOffAuto account_get_opt(QemuOpts *opts, const char *name) |
| 468 | { |
| 469 | if (!qemu_opt_find(opts, name)) { |
| 470 | return ON_OFF_AUTO_AUTO; |
| 471 | } |
| 472 | if (qemu_opt_get_bool(opts, name, true)) { |
| 473 | return ON_OFF_AUTO_ON; |
| 474 | } |
| 475 | return ON_OFF_AUTO_OFF; |
| 476 | } |
| 477 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 478 | /* Takes the ownership of bs_opts */ |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 479 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
| 480 | Error **errp) |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 481 | { |
| 482 | const char *buf; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 483 | int bdrv_flags = 0; |
| 484 | int on_read_error, on_write_error; |
Denis V. Lunev | b2aaf35 | 2022-08-24 11:50:43 +0200 | [diff] [blame] | 485 | OnOffAuto account_invalid, account_failed; |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 486 | bool writethrough, read_only; |
Markus Armbruster | 26f54e9 | 2014-10-07 13:59:04 +0200 | [diff] [blame] | 487 | BlockBackend *blk; |
Markus Armbruster | a0f1eab | 2014-09-12 21:26:21 +0200 | [diff] [blame] | 488 | BlockDriverState *bs; |
Benoît Canet | cc0681c | 2013-09-02 14:14:39 +0200 | [diff] [blame] | 489 | ThrottleConfig cfg; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 490 | int snapshot = 0; |
Stefan Hajnoczi | c546194 | 2013-02-13 16:53:42 +0100 | [diff] [blame] | 491 | Error *error = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 492 | QemuOpts *opts; |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 493 | QDict *interval_dict = NULL; |
| 494 | QList *interval_list = NULL; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 495 | const char *id; |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 496 | BlockdevDetectZeroesOptions detect_zeroes = |
| 497 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; |
| 498 | const char *throttling_group = NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 499 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 500 | /* Check common options by copying from bs_opts to opts, all other options |
| 501 | * stay in bs_opts for processing by bdrv_open(). */ |
| 502 | id = qdict_get_try_str(bs_opts, "id"); |
Markus Armbruster | c6ecec4 | 2020-07-07 18:05:35 +0200 | [diff] [blame] | 503 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, errp); |
| 504 | if (!opts) { |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 505 | goto err_no_opts; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 506 | } |
| 507 | |
Markus Armbruster | 668f62e | 2020-07-07 18:06:02 +0200 | [diff] [blame] | 508 | if (!qemu_opts_absorb_qdict(opts, bs_opts, errp)) { |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 509 | goto early_err; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | if (id) { |
| 513 | qdict_del(bs_opts, "id"); |
| 514 | } |
| 515 | |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 516 | /* extract parameters */ |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 517 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 518 | |
Denis V. Lunev | b2aaf35 | 2022-08-24 11:50:43 +0200 | [diff] [blame] | 519 | account_invalid = account_get_opt(opts, "stats-account-invalid"); |
| 520 | account_failed = account_get_opt(opts, "stats-account-failed"); |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 521 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 522 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
| 523 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 524 | id = qemu_opts_id(opts); |
| 525 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 526 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
| 527 | qdict_array_split(interval_dict, &interval_list); |
| 528 | |
| 529 | if (qdict_size(interval_dict) != 0) { |
| 530 | error_setg(errp, "Invalid option stats-intervals.%s", |
| 531 | qdict_first(interval_dict)->key); |
| 532 | goto early_err; |
| 533 | } |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 534 | |
Max Reitz | fbf8175 | 2015-10-19 17:53:31 +0200 | [diff] [blame] | 535 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
| 536 | &detect_zeroes, &error); |
| 537 | if (error) { |
| 538 | error_propagate(errp, error); |
| 539 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 540 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 541 | |
| 542 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 543 | if (is_help_option(buf)) { |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 544 | qemu_printf("Supported formats:"); |
Andrey Shinkevich | 9ac404c | 2019-03-07 16:33:58 +0300 | [diff] [blame] | 545 | bdrv_iterate_format(bdrv_format_print, NULL, false); |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 546 | qemu_printf("\nSupported formats (read-only):"); |
Andrey Shinkevich | 9ac404c | 2019-03-07 16:33:58 +0300 | [diff] [blame] | 547 | bdrv_iterate_format(bdrv_format_print, NULL, true); |
Markus Armbruster | cdcd436 | 2019-04-17 21:06:38 +0200 | [diff] [blame] | 548 | qemu_printf("\n"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 549 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 550 | } |
Kevin Wolf | 74fe54f | 2013-07-09 11:09:02 +0200 | [diff] [blame] | 551 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 552 | if (qdict_haskey(bs_opts, "driver")) { |
| 553 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 554 | goto early_err; |
Mike Qiu | 6db5f5d | 2013-08-08 10:45:16 -0400 | [diff] [blame] | 555 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 556 | qdict_put_str(bs_opts, "driver", buf); |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 557 | } |
| 558 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 559 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 560 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 561 | on_write_error = parse_block_error_action(buf, 0, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 562 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 563 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 564 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 565 | } |
| 566 | } |
| 567 | |
Paolo Bonzini | 92aa5c6 | 2012-09-28 17:22:55 +0200 | [diff] [blame] | 568 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 569 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 570 | on_read_error = parse_block_error_action(buf, 1, &error); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 571 | if (error) { |
Kevin Wolf | b681072 | 2013-09-20 11:33:11 +0200 | [diff] [blame] | 572 | error_propagate(errp, error); |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 573 | goto early_err; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 574 | } |
| 575 | } |
| 576 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 577 | if (snapshot) { |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 578 | bdrv_flags |= BDRV_O_SNAPSHOT; |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 579 | } |
| 580 | |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 581 | read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false); |
| 582 | |
Kevin Wolf | 326642b | 2013-07-11 12:52:34 +0200 | [diff] [blame] | 583 | /* init */ |
Kevin Wolf | 39c4ae9 | 2015-11-13 14:45:42 +0100 | [diff] [blame] | 584 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 585 | BlockBackendRootState *blk_rs; |
| 586 | |
Kevin Wolf | d861ab3 | 2019-04-25 14:25:10 +0200 | [diff] [blame] | 587 | blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 588 | blk_rs = blk_get_root_state(blk); |
Vladimir Sementsov-Ogievskiy | 260242a | 2021-05-27 18:40:56 +0300 | [diff] [blame] | 589 | blk_rs->open_flags = bdrv_flags | (read_only ? 0 : BDRV_O_RDWR); |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 590 | blk_rs->detect_zeroes = detect_zeroes; |
| 591 | |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 592 | qobject_unref(bs_opts); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 593 | } else { |
| 594 | if (file && !*file) { |
| 595 | file = NULL; |
| 596 | } |
| 597 | |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 598 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 599 | * with other callers) rather than what we want as the real defaults. |
| 600 | * Apply the defaults here instead. */ |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 601 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 602 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 603 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, |
| 604 | read_only ? "on" : "off"); |
Kevin Wolf | 9384a44 | 2018-10-17 18:24:30 +0200 | [diff] [blame] | 605 | qdict_set_default_str(bs_opts, BDRV_OPT_AUTO_READ_ONLY, "on"); |
Kevin Wolf | 72e775c | 2016-03-15 14:34:37 +0100 | [diff] [blame] | 606 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
Kevin Wolf | 91a097e | 2015-05-08 17:49:53 +0200 | [diff] [blame] | 607 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 608 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 609 | bdrv_flags |= BDRV_O_INACTIVE; |
| 610 | } |
| 611 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 612 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 613 | if (!blk) { |
| 614 | goto err_no_bs_opts; |
| 615 | } |
| 616 | bs = blk_bs(blk); |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 617 | |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 618 | bs->detect_zeroes = detect_zeroes; |
| 619 | |
Paolo Bonzini | 9caa6f3 | 2017-06-05 14:39:07 +0200 | [diff] [blame] | 620 | block_acct_setup(blk_get_stats(blk), account_invalid, account_failed); |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 621 | |
Alberto Garcia | 40119ef | 2015-11-16 11:28:38 +0200 | [diff] [blame] | 622 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
| 623 | blk_unref(blk); |
| 624 | blk = NULL; |
| 625 | goto err_no_bs_opts; |
Alberto Garcia | 2be5506 | 2015-10-28 17:33:07 +0200 | [diff] [blame] | 626 | } |
Max Reitz | 5ec18f8 | 2015-10-19 17:53:30 +0200 | [diff] [blame] | 627 | } |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 628 | |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 629 | /* disk I/O throttling */ |
| 630 | if (throttle_enabled(&cfg)) { |
| 631 | if (!throttling_group) { |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 632 | throttling_group = id; |
Kevin Wolf | 7ca7f0f | 2016-03-22 13:00:08 +0100 | [diff] [blame] | 633 | } |
| 634 | blk_io_limits_enable(blk, throttling_group); |
| 635 | blk_set_io_limits(blk, &cfg); |
| 636 | } |
| 637 | |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 638 | blk_set_enable_write_cache(blk, !writethrough); |
Max Reitz | 373340b | 2015-10-19 17:53:22 +0200 | [diff] [blame] | 639 | blk_set_on_error(blk, on_read_error, on_write_error); |
Markus Armbruster | abd7f68 | 2010-06-02 18:55:17 +0200 | [diff] [blame] | 640 | |
Alberto Garcia | ff356ee | 2016-07-08 17:03:00 +0300 | [diff] [blame] | 641 | if (!monitor_add_blk(blk, id, errp)) { |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 642 | blk_unref(blk); |
| 643 | blk = NULL; |
| 644 | goto err_no_bs_opts; |
| 645 | } |
| 646 | |
Max Reitz | e4342ce | 2015-02-05 13:58:14 -0500 | [diff] [blame] | 647 | err_no_bs_opts: |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 648 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 649 | qobject_unref(interval_dict); |
| 650 | qobject_unref(interval_list); |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 651 | return blk; |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 652 | |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 653 | early_err: |
Stefan Hajnoczi | ec9c10d | 2013-10-30 14:54:30 +0100 | [diff] [blame] | 654 | qemu_opts_del(opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 655 | qobject_unref(interval_dict); |
| 656 | qobject_unref(interval_list); |
Markus Armbruster | 6376f95 | 2014-05-28 11:17:01 +0200 | [diff] [blame] | 657 | err_no_opts: |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 658 | qobject_unref(bs_opts); |
Markus Armbruster | a9ae2bf | 2011-02-08 15:12:39 +0100 | [diff] [blame] | 659 | return NULL; |
Markus Armbruster | 666daa6 | 2010-06-02 18:48:27 +0200 | [diff] [blame] | 660 | } |
| 661 | |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 662 | /* Takes the ownership of bs_opts */ |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 663 | BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 664 | { |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 665 | int bdrv_flags = 0; |
| 666 | |
Emanuele Giuseppe Esposito | b4ad82a | 2022-03-03 10:15:57 -0500 | [diff] [blame] | 667 | GLOBAL_STATE_CODE(); |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 668 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
| 669 | * with other callers) rather than what we want as the real defaults. |
| 670 | * Apply the defaults here instead. */ |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 671 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
| 672 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); |
Alberto Garcia | f87a0e2 | 2016-09-15 17:53:02 +0300 | [diff] [blame] | 673 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off"); |
Kevin Wolf | a81d616 | 2016-03-07 14:23:04 +0100 | [diff] [blame] | 674 | |
Kevin Wolf | 12d5ee3 | 2016-02-19 16:48:10 +0100 | [diff] [blame] | 675 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
| 676 | bdrv_flags |= BDRV_O_INACTIVE; |
| 677 | } |
| 678 | |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 679 | return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); |
Max Reitz | bd745e2 | 2015-10-19 17:53:32 +0200 | [diff] [blame] | 680 | } |
| 681 | |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 682 | void blockdev_close_all_bdrv_states(void) |
| 683 | { |
| 684 | BlockDriverState *bs, *next_bs; |
| 685 | |
Emanuele Giuseppe Esposito | b4ad82a | 2022-03-03 10:15:57 -0500 | [diff] [blame] | 686 | GLOBAL_STATE_CODE(); |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 687 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 688 | bdrv_unref(bs); |
Max Reitz | 9c4218e | 2016-01-29 16:36:12 +0100 | [diff] [blame] | 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 | { |
Emanuele Giuseppe Esposito | f791bf7 | 2022-03-03 10:15:49 -0500 | [diff] [blame] | 695 | GLOBAL_STATE_CODE(); |
Max Reitz | 262b4e8 | 2016-03-16 19:54:41 +0100 | [diff] [blame] | 696 | return bs ? QTAILQ_NEXT(bs, monitor_list) |
| 697 | : QTAILQ_FIRST(&monitor_bdrv_states); |
| 698 | } |
| 699 | |
Markus Armbruster | c75d7f7 | 2020-07-07 18:05:41 +0200 | [diff] [blame] | 700 | 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] | 701 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 702 | { |
| 703 | const char *value; |
| 704 | |
| 705 | value = qemu_opt_get(opts, from); |
| 706 | if (value) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 707 | if (qemu_opt_find(opts, to)) { |
| 708 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " |
| 709 | "same time", to, from); |
Markus Armbruster | c75d7f7 | 2020-07-07 18:05:41 +0200 | [diff] [blame] | 710 | return false; |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 711 | } |
Jun Li | 20d6cd4 | 2014-09-24 13:45:27 +0800 | [diff] [blame] | 712 | } |
| 713 | |
| 714 | /* rename all items in opts */ |
| 715 | while ((value = qemu_opt_get(opts, from))) { |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 716 | qemu_opt_set(opts, to, value, &error_abort); |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 717 | qemu_opt_unset(opts, from); |
| 718 | } |
Markus Armbruster | c75d7f7 | 2020-07-07 18:05:41 +0200 | [diff] [blame] | 719 | return true; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 720 | } |
| 721 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 722 | QemuOptsList qemu_legacy_drive_opts = { |
| 723 | .name = "drive", |
| 724 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), |
| 725 | .desc = { |
| 726 | { |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 727 | .name = "bus", |
| 728 | .type = QEMU_OPT_NUMBER, |
| 729 | .help = "bus number", |
| 730 | },{ |
| 731 | .name = "unit", |
| 732 | .type = QEMU_OPT_NUMBER, |
| 733 | .help = "unit number (i.e. lun for scsi)", |
| 734 | },{ |
| 735 | .name = "index", |
| 736 | .type = QEMU_OPT_NUMBER, |
| 737 | .help = "index number", |
| 738 | },{ |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 739 | .name = "media", |
| 740 | .type = QEMU_OPT_STRING, |
| 741 | .help = "media type (disk, cdrom)", |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 742 | },{ |
| 743 | .name = "if", |
| 744 | .type = QEMU_OPT_STRING, |
| 745 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", |
Kevin Wolf | b41a733 | 2013-09-09 16:49:49 +0200 | [diff] [blame] | 746 | },{ |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 747 | .name = "file", |
| 748 | .type = QEMU_OPT_STRING, |
| 749 | .help = "file name", |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 750 | }, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 751 | |
| 752 | /* Options that are passed on, but have special semantics with -drive */ |
| 753 | { |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 754 | .name = BDRV_OPT_READ_ONLY, |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 755 | .type = QEMU_OPT_BOOL, |
| 756 | .help = "open drive file as read-only", |
| 757 | },{ |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 758 | .name = "rerror", |
| 759 | .type = QEMU_OPT_STRING, |
| 760 | .help = "read error action", |
| 761 | },{ |
| 762 | .name = "werror", |
| 763 | .type = QEMU_OPT_STRING, |
| 764 | .help = "write error action", |
| 765 | },{ |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 766 | .name = "copy-on-read", |
| 767 | .type = QEMU_OPT_BOOL, |
| 768 | .help = "copy read data from backing file into image file", |
| 769 | }, |
| 770 | |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 771 | { /* end of list */ } |
| 772 | }, |
| 773 | }; |
| 774 | |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 775 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type, |
| 776 | Error **errp) |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 777 | { |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 778 | const char *value; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 779 | BlockBackend *blk; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 780 | DriveInfo *dinfo = NULL; |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 781 | QDict *bs_opts; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 782 | QemuOpts *legacy_opts; |
| 783 | DriveMediaType media = MEDIA_DISK; |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 784 | BlockInterfaceType type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 785 | int max_devs, bus_id, unit_id, index; |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 786 | const char *werror, *rerror; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 787 | bool read_only = false; |
| 788 | bool copy_on_read; |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 789 | const char *filename; |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 790 | int i; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 791 | |
Emanuele Giuseppe Esposito | c5be744 | 2022-03-03 10:16:06 -0500 | [diff] [blame] | 792 | GLOBAL_STATE_CODE(); |
| 793 | |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 794 | /* Change legacy command line options into QMP ones */ |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 795 | static const struct { |
| 796 | const char *from; |
| 797 | const char *to; |
| 798 | } opt_renames[] = { |
| 799 | { "iops", "throttling.iops-total" }, |
| 800 | { "iops_rd", "throttling.iops-read" }, |
| 801 | { "iops_wr", "throttling.iops-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 802 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 803 | { "bps", "throttling.bps-total" }, |
| 804 | { "bps_rd", "throttling.bps-read" }, |
| 805 | { "bps_wr", "throttling.bps-write" }, |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 806 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 807 | { "iops_max", "throttling.iops-total-max" }, |
| 808 | { "iops_rd_max", "throttling.iops-read-max" }, |
| 809 | { "iops_wr_max", "throttling.iops-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 810 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 811 | { "bps_max", "throttling.bps-total-max" }, |
| 812 | { "bps_rd_max", "throttling.bps-read-max" }, |
| 813 | { "bps_wr_max", "throttling.bps-write-max" }, |
Benoît Canet | 3e9fab6 | 2013-09-02 14:14:40 +0200 | [diff] [blame] | 814 | |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 815 | { "iops_size", "throttling.iops-size" }, |
Benoît Canet | 2024c1d | 2013-09-02 14:14:41 +0200 | [diff] [blame] | 816 | |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 817 | { "group", "throttling.group" }, |
| 818 | |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 819 | { "readonly", BDRV_OPT_READ_ONLY }, |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 820 | }; |
| 821 | |
| 822 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { |
Markus Armbruster | 235e59c | 2020-07-07 18:05:42 +0200 | [diff] [blame] | 823 | if (!qemu_opt_rename(all_opts, opt_renames[i].from, |
Markus Armbruster | 668f62e | 2020-07-07 18:06:02 +0200 | [diff] [blame] | 824 | opt_renames[i].to, errp)) { |
Kevin Wolf | 5abbf0e | 2014-09-18 11:48:34 +0200 | [diff] [blame] | 825 | return NULL; |
| 826 | } |
Kevin Wolf | 247147f | 2014-09-24 16:37:14 +0200 | [diff] [blame] | 827 | } |
Kevin Wolf | 0f227a9 | 2013-07-19 20:07:29 +0200 | [diff] [blame] | 828 | |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 829 | value = qemu_opt_get(all_opts, "cache"); |
| 830 | if (value) { |
| 831 | int flags = 0; |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 832 | bool writethrough; |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 833 | |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 834 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 835 | error_setg(errp, "invalid cache option"); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 836 | return NULL; |
| 837 | } |
| 838 | |
| 839 | /* Specific options take precedence */ |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 840 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
| 841 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, |
Kevin Wolf | 04feb4a | 2016-03-18 15:35:51 +0100 | [diff] [blame] | 842 | !writethrough, &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 843 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 844 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
| 845 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 846 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 847 | } |
Kevin Wolf | 54861b9 | 2015-04-07 16:55:00 +0200 | [diff] [blame] | 848 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
| 849 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, |
Markus Armbruster | cccb796 | 2015-02-12 16:37:44 +0100 | [diff] [blame] | 850 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
Kevin Wolf | 29c4e2b | 2013-07-18 16:31:25 +0200 | [diff] [blame] | 851 | } |
| 852 | qemu_opt_unset(all_opts, "cache"); |
| 853 | } |
| 854 | |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 855 | /* Get a QDict for processing the options */ |
| 856 | bs_opts = qdict_new(); |
| 857 | qemu_opts_to_qdict(all_opts, bs_opts); |
| 858 | |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 859 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
| 860 | &error_abort); |
Markus Armbruster | af175e8 | 2020-07-07 18:06:03 +0200 | [diff] [blame] | 861 | if (!qemu_opts_absorb_qdict(legacy_opts, bs_opts, errp)) { |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 862 | goto fail; |
| 863 | } |
| 864 | |
| 865 | /* Media type */ |
| 866 | value = qemu_opt_get(legacy_opts, "media"); |
| 867 | if (value) { |
| 868 | if (!strcmp(value, "disk")) { |
| 869 | media = MEDIA_DISK; |
| 870 | } else if (!strcmp(value, "cdrom")) { |
| 871 | media = MEDIA_CDROM; |
Fam Zheng | a7fdbcf | 2013-10-15 17:45:50 +0800 | [diff] [blame] | 872 | read_only = true; |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 873 | } else { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 874 | error_setg(errp, "'%s' invalid media", value); |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 875 | goto fail; |
| 876 | } |
| 877 | } |
| 878 | |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 879 | /* copy-on-read is disabled with a warning for read-only devices */ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 880 | 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] | 881 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
| 882 | |
| 883 | if (read_only && copy_on_read) { |
Alistair Francis | 3dc6f86 | 2017-07-12 06:57:41 -0700 | [diff] [blame] | 884 | warn_report("disabling copy-on-read on read-only drive"); |
Kevin Wolf | 0ebd24e | 2013-09-19 15:12:18 +0200 | [diff] [blame] | 885 | copy_on_read = false; |
| 886 | } |
| 887 | |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 888 | qdict_put_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); |
| 889 | 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] | 890 | |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 891 | /* Controller type */ |
| 892 | value = qemu_opt_get(legacy_opts, "if"); |
| 893 | if (value) { |
| 894 | for (type = 0; |
| 895 | type < IF_COUNT && strcmp(value, if_name[type]); |
| 896 | type++) { |
| 897 | } |
| 898 | if (type == IF_COUNT) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 899 | error_setg(errp, "unsupported bus type '%s'", value); |
Kevin Wolf | 593d464 | 2013-08-28 17:24:51 +0200 | [diff] [blame] | 900 | goto fail; |
| 901 | } |
| 902 | } else { |
| 903 | type = block_default_type; |
| 904 | } |
| 905 | |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 906 | /* Device address specified by bus/unit or index. |
| 907 | * If none was specified, try to find the first free one. */ |
| 908 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); |
| 909 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); |
| 910 | index = qemu_opt_get_number(legacy_opts, "index", -1); |
| 911 | |
| 912 | max_devs = if_max_devs[type]; |
| 913 | |
| 914 | if (index != -1) { |
| 915 | if (bus_id != 0 || unit_id != -1) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 916 | error_setg(errp, "index cannot be used with bus and unit"); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 917 | goto fail; |
| 918 | } |
| 919 | bus_id = drive_index_to_bus_id(type, index); |
| 920 | unit_id = drive_index_to_unit_id(type, index); |
| 921 | } |
| 922 | |
| 923 | if (unit_id == -1) { |
| 924 | unit_id = 0; |
| 925 | while (drive_get(type, bus_id, unit_id) != NULL) { |
| 926 | unit_id++; |
| 927 | if (max_devs && unit_id >= max_devs) { |
| 928 | unit_id -= max_devs; |
| 929 | bus_id++; |
| 930 | } |
| 931 | } |
| 932 | } |
| 933 | |
| 934 | if (max_devs && unit_id >= max_devs) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 935 | 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] | 936 | goto fail; |
| 937 | } |
| 938 | |
| 939 | if (drive_get(type, bus_id, unit_id) != NULL) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 940 | error_setg(errp, "drive with bus=%d, unit=%d (index=%d) exists", |
| 941 | bus_id, unit_id, index); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 942 | goto fail; |
| 943 | } |
| 944 | |
| 945 | /* no id supplied -> create one */ |
| 946 | if (qemu_opts_id(all_opts) == NULL) { |
| 947 | char *new_id; |
| 948 | const char *mediastr = ""; |
| 949 | if (type == IF_IDE || type == IF_SCSI) { |
| 950 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
| 951 | } |
| 952 | if (max_devs) { |
| 953 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, |
| 954 | mediastr, unit_id); |
| 955 | } else { |
| 956 | new_id = g_strdup_printf("%s%s%i", if_name[type], |
| 957 | mediastr, unit_id); |
| 958 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 959 | qdict_put_str(bs_opts, "id", new_id); |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 960 | g_free(new_id); |
| 961 | } |
| 962 | |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 963 | /* Add virtio block device */ |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 964 | if (type == IF_VIRTIO) { |
| 965 | QemuOpts *devopts; |
Peter Crosthwaite | 87ea75d | 2014-01-01 18:49:17 -0800 | [diff] [blame] | 966 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 967 | &error_abort); |
Laurent Vivier | 9db1d3a | 2021-03-23 16:53:04 +0000 | [diff] [blame] | 968 | qemu_opt_set(devopts, "driver", "virtio-blk", &error_abort); |
Markus Armbruster | f43e47d | 2015-02-12 17:52:20 +0100 | [diff] [blame] | 969 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 970 | &error_abort); |
David Woodhouse | d3256f8 | 2023-10-16 13:01:39 +0100 | [diff] [blame] | 971 | } else if (type == IF_XEN) { |
| 972 | QemuOpts *devopts; |
| 973 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
| 974 | &error_abort); |
| 975 | qemu_opt_set(devopts, "driver", |
| 976 | (media == MEDIA_CDROM) ? "xen-cdrom" : "xen-disk", |
| 977 | &error_abort); |
| 978 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
| 979 | &error_abort); |
Kevin Wolf | 394c7d4 | 2013-09-13 14:09:17 +0200 | [diff] [blame] | 980 | } |
| 981 | |
Max Reitz | d095b46 | 2013-12-20 19:28:14 +0100 | [diff] [blame] | 982 | filename = qemu_opt_get(legacy_opts, "file"); |
| 983 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 984 | /* Check werror/rerror compatibility with if=... */ |
| 985 | werror = qemu_opt_get(legacy_opts, "werror"); |
| 986 | if (werror != NULL) { |
| 987 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && |
| 988 | type != IF_NONE) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 989 | error_setg(errp, "werror is not supported by this bus type"); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 990 | goto fail; |
| 991 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 992 | qdict_put_str(bs_opts, "werror", werror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 993 | } |
| 994 | |
| 995 | rerror = qemu_opt_get(legacy_opts, "rerror"); |
| 996 | if (rerror != NULL) { |
| 997 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && |
| 998 | type != IF_NONE) { |
Markus Armbruster | c4f26c9 | 2018-10-17 10:26:57 +0200 | [diff] [blame] | 999 | error_setg(errp, "rerror is not supported by this bus type"); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1000 | goto fail; |
| 1001 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1002 | qdict_put_str(bs_opts, "rerror", rerror); |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1003 | } |
| 1004 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1005 | /* Actual block device init: Functionality shared with blockdev-add */ |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 1006 | blk = blockdev_init(filename, bs_opts, errp); |
Markus Armbruster | 3cb0e25 | 2014-05-28 11:17:02 +0200 | [diff] [blame] | 1007 | bs_opts = NULL; |
Markus Armbruster | 18e46a0 | 2014-10-07 13:59:06 +0200 | [diff] [blame] | 1008 | if (!blk) { |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1009 | goto fail; |
| 1010 | } |
| 1011 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1012 | /* Create legacy DriveInfo */ |
| 1013 | dinfo = g_malloc0(sizeof(*dinfo)); |
Kevin Wolf | f298d07 | 2013-09-10 12:01:20 +0200 | [diff] [blame] | 1014 | dinfo->opts = all_opts; |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1015 | |
Kevin Wolf | ee13ed1 | 2014-02-09 09:52:32 +0100 | [diff] [blame] | 1016 | dinfo->type = type; |
Kevin Wolf | 87a899c | 2013-09-10 15:48:13 +0200 | [diff] [blame] | 1017 | dinfo->bus = bus_id; |
| 1018 | dinfo->unit = unit_id; |
Kevin Wolf | bcf8315 | 2014-06-06 15:21:48 +0200 | [diff] [blame] | 1019 | |
Markus Armbruster | 26f8b3a | 2014-10-07 13:59:22 +0200 | [diff] [blame] | 1020 | blk_set_legacy_dinfo(blk, dinfo); |
| 1021 | |
Kevin Wolf | e34ef04 | 2013-09-19 14:24:10 +0200 | [diff] [blame] | 1022 | switch(type) { |
| 1023 | case IF_IDE: |
| 1024 | case IF_SCSI: |
| 1025 | case IF_XEN: |
| 1026 | case IF_NONE: |
| 1027 | dinfo->media_cd = media == MEDIA_CDROM; |
| 1028 | break; |
| 1029 | default: |
| 1030 | break; |
| 1031 | } |
| 1032 | |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1033 | fail: |
Kevin Wolf | 33cb7dc | 2013-08-28 17:00:13 +0200 | [diff] [blame] | 1034 | qemu_opts_del(legacy_opts); |
Marc-André Lureau | cb3e7f0 | 2018-04-19 17:01:43 +0200 | [diff] [blame] | 1035 | qobject_unref(bs_opts); |
Kevin Wolf | 2d246f0 | 2013-09-18 15:14:47 +0200 | [diff] [blame] | 1036 | return dinfo; |
Kevin Wolf | 5797522 | 2013-07-17 14:41:54 +0200 | [diff] [blame] | 1037 | } |
| 1038 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1039 | static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) |
| 1040 | { |
| 1041 | BlockDriverState *bs; |
| 1042 | |
Kevin Wolf | 2b3912f | 2023-09-29 16:51:39 +0200 | [diff] [blame] | 1043 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 1044 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1045 | bs = bdrv_lookup_bs(name, name, errp); |
| 1046 | if (bs == NULL) { |
| 1047 | return NULL; |
| 1048 | } |
| 1049 | |
| 1050 | if (!bdrv_is_root_node(bs)) { |
| 1051 | error_setg(errp, "Need a root block node"); |
| 1052 | return NULL; |
| 1053 | } |
| 1054 | |
| 1055 | if (!bdrv_is_inserted(bs)) { |
| 1056 | error_setg(errp, "Device has no medium"); |
Emanuele Giuseppe Esposito | 1e97be9 | 2023-01-13 21:42:02 +0100 | [diff] [blame] | 1057 | bs = NULL; |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1058 | } |
| 1059 | |
| 1060 | return bs; |
| 1061 | } |
| 1062 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1063 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1064 | { |
Kevin Wolf | c8a83e8 | 2013-05-13 10:43:43 +0200 | [diff] [blame] | 1065 | TransactionActionList list; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1066 | |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1067 | list.value = action; |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1068 | list.next = NULL; |
Markus Armbruster | 238e920 | 2022-11-04 17:07:08 +0100 | [diff] [blame] | 1069 | qmp_transaction(&list, NULL, errp); |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1070 | } |
| 1071 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 1072 | void qmp_blockdev_snapshot_sync(const char *device, const char *node_name, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1073 | const char *snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1074 | const char *snapshot_node_name, |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 1075 | const char *format, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1076 | bool has_mode, NewImageMode mode, Error **errp) |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1077 | { |
Alberto Garcia | a911e6a | 2015-10-26 14:27:14 +0200 | [diff] [blame] | 1078 | BlockdevSnapshotSync snapshot = { |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1079 | .device = (char *) device, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1080 | .node_name = (char *) node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1081 | .snapshot_file = (char *) snapshot_file, |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1082 | .snapshot_node_name = (char *) snapshot_node_name, |
Paolo Bonzini | 6cc2a41 | 2012-03-06 18:55:59 +0100 | [diff] [blame] | 1083 | .format = (char *) format, |
| 1084 | .has_mode = has_mode, |
| 1085 | .mode = mode, |
| 1086 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1087 | TransactionAction action = { |
| 1088 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1089 | .u.blockdev_snapshot_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1090 | }; |
| 1091 | blockdev_do_action(&action, errp); |
Jes Sorensen | f888256 | 2010-12-16 13:52:16 +0100 | [diff] [blame] | 1092 | } |
| 1093 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1094 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
| 1095 | Error **errp) |
| 1096 | { |
| 1097 | BlockdevSnapshot snapshot_data = { |
| 1098 | .node = (char *) node, |
| 1099 | .overlay = (char *) overlay |
| 1100 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1101 | TransactionAction action = { |
| 1102 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1103 | .u.blockdev_snapshot.data = &snapshot_data, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1104 | }; |
| 1105 | blockdev_do_action(&action, errp); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1106 | } |
| 1107 | |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1108 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
| 1109 | const char *name, |
| 1110 | Error **errp) |
| 1111 | { |
| 1112 | BlockdevSnapshotInternal snapshot = { |
| 1113 | .device = (char *) device, |
| 1114 | .name = (char *) name |
| 1115 | }; |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1116 | TransactionAction action = { |
| 1117 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1118 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
Eric Blake | 10f7590 | 2016-03-03 09:16:50 -0700 | [diff] [blame] | 1119 | }; |
| 1120 | blockdev_do_action(&action, errp); |
Wenchao Xia | f323bc9 | 2013-09-11 14:04:35 +0800 | [diff] [blame] | 1121 | } |
| 1122 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1123 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1124 | const char *id, |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1125 | const char *name, |
| 1126 | Error **errp) |
| 1127 | { |
Fam Zheng | a0e8544 | 2015-03-02 19:36:48 +0800 | [diff] [blame] | 1128 | BlockDriverState *bs; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1129 | QEMUSnapshotInfo sn; |
| 1130 | Error *local_err = NULL; |
| 1131 | SnapshotInfo *info = NULL; |
| 1132 | int ret; |
| 1133 | |
Kevin Wolf | a32e781 | 2023-09-29 16:51:42 +0200 | [diff] [blame] | 1134 | GLOBAL_STATE_CODE(); |
| 1135 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 1136 | |
Kevin Wolf | 2dfb4c0 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1137 | bs = qmp_get_root_bs(device, errp); |
| 1138 | if (!bs) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1139 | return NULL; |
| 1140 | } |
| 1141 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1142 | if (!id && !name) { |
| 1143 | error_setg(errp, "Name or id must be provided"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1144 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1145 | } |
| 1146 | |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1147 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1148 | return NULL; |
Stefan Hajnoczi | 0b92885 | 2014-11-19 14:19:43 +0000 | [diff] [blame] | 1149 | } |
| 1150 | |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1151 | 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] | 1152 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1153 | error_propagate(errp, local_err); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1154 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1155 | } |
| 1156 | if (!ret) { |
| 1157 | error_setg(errp, |
| 1158 | "Snapshot with id '%s' and name '%s' does not exist on " |
| 1159 | "device '%s'", |
| 1160 | STR_OR_NULL(id), STR_OR_NULL(name), device); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1161 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1162 | } |
| 1163 | |
| 1164 | bdrv_snapshot_delete(bs, id, name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1165 | if (local_err) { |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1166 | error_propagate(errp, local_err); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1167 | return NULL; |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1168 | } |
| 1169 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 1170 | info = g_new0(SnapshotInfo, 1); |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1171 | info->id = g_strdup(sn.id_str); |
| 1172 | info->name = g_strdup(sn.name); |
| 1173 | info->date_nsec = sn.date_nsec; |
| 1174 | info->date_sec = sn.date_sec; |
| 1175 | info->vm_state_size = sn.vm_state_size; |
| 1176 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; |
| 1177 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; |
Pavel Dovgalyuk | b39847a | 2020-10-03 20:13:08 +0300 | [diff] [blame] | 1178 | if (sn.icount != -1ULL) { |
| 1179 | info->icount = sn.icount; |
| 1180 | info->has_icount = true; |
| 1181 | } |
Wenchao Xia | 44e3e05 | 2013-09-11 14:04:36 +0800 | [diff] [blame] | 1182 | |
| 1183 | return info; |
| 1184 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1185 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1186 | /* internal snapshot private data */ |
| 1187 | typedef struct InternalSnapshotState { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1188 | BlockDriverState *bs; |
| 1189 | QEMUSnapshotInfo sn; |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1190 | bool created; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1191 | } InternalSnapshotState; |
| 1192 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1193 | static void internal_snapshot_abort(void *opaque); |
| 1194 | static void internal_snapshot_clean(void *opaque); |
| 1195 | TransactionActionDrv internal_snapshot_drv = { |
| 1196 | .abort = internal_snapshot_abort, |
| 1197 | .clean = internal_snapshot_clean, |
| 1198 | }; |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1199 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1200 | static void internal_snapshot_action(BlockdevSnapshotInternal *internal, |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1201 | Transaction *tran, Error **errp) |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1202 | { |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1203 | Error *local_err = NULL; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1204 | const char *device; |
| 1205 | const char *name; |
| 1206 | BlockDriverState *bs; |
| 1207 | QEMUSnapshotInfo old_sn, *sn; |
| 1208 | bool ret; |
Marc-André Lureau | f793dde | 2022-03-07 11:04:00 +0400 | [diff] [blame] | 1209 | int64_t rt; |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1210 | InternalSnapshotState *state = g_new0(InternalSnapshotState, 1); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1211 | int ret1; |
| 1212 | |
Kevin Wolf | a32e781 | 2023-09-29 16:51:42 +0200 | [diff] [blame] | 1213 | GLOBAL_STATE_CODE(); |
| 1214 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 1215 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1216 | tran_add(tran, &internal_snapshot_drv, state); |
| 1217 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1218 | device = internal->device; |
| 1219 | name = internal->name; |
| 1220 | |
Kevin Wolf | 75dfd40 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1221 | bs = qmp_get_root_bs(device, errp); |
| 1222 | if (!bs) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1223 | return; |
| 1224 | } |
| 1225 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1226 | state->bs = bs; |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1227 | |
| 1228 | /* Paired with .clean() */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1229 | bdrv_drained_begin(bs); |
| 1230 | |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1231 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1232 | return; |
Stefan Hajnoczi | 3dc7ca3 | 2014-11-21 10:49:00 +0000 | [diff] [blame] | 1233 | } |
| 1234 | |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1235 | if (bdrv_is_read_only(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1236 | error_setg(errp, "Device '%s' is read only", device); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1237 | return; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1238 | } |
| 1239 | |
| 1240 | if (!bdrv_can_snapshot(bs)) { |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1241 | error_setg(errp, "Block format '%s' used by device '%s' " |
| 1242 | "does not support internal snapshots", |
| 1243 | bs->drv->format_name, device); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1244 | return; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1245 | } |
| 1246 | |
| 1247 | if (!strlen(name)) { |
| 1248 | error_setg(errp, "Name is empty"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1249 | return; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1250 | } |
| 1251 | |
| 1252 | /* check whether a snapshot with name exist */ |
Markus Armbruster | f70edf9 | 2014-04-25 16:50:34 +0200 | [diff] [blame] | 1253 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
| 1254 | &local_err); |
| 1255 | if (local_err) { |
| 1256 | error_propagate(errp, local_err); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1257 | return; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1258 | } else if (ret) { |
| 1259 | error_setg(errp, |
| 1260 | "Snapshot with name '%s' already exists on device '%s'", |
| 1261 | name, device); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1262 | return; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1263 | } |
| 1264 | |
| 1265 | /* 3. take the snapshot */ |
| 1266 | sn = &state->sn; |
| 1267 | pstrcpy(sn->name, sizeof(sn->name), name); |
Marc-André Lureau | f793dde | 2022-03-07 11:04:00 +0400 | [diff] [blame] | 1268 | rt = g_get_real_time(); |
| 1269 | sn->date_sec = rt / G_USEC_PER_SEC; |
| 1270 | sn->date_nsec = (rt % G_USEC_PER_SEC) * 1000; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1271 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
Pavel Dovgalyuk | b39847a | 2020-10-03 20:13:08 +0300 | [diff] [blame] | 1272 | if (replay_mode != REPLAY_MODE_NONE) { |
| 1273 | sn->icount = replay_get_current_icount(); |
| 1274 | } else { |
| 1275 | sn->icount = -1ULL; |
| 1276 | } |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1277 | |
| 1278 | ret1 = bdrv_snapshot_create(bs, sn); |
| 1279 | if (ret1 < 0) { |
| 1280 | error_setg_errno(errp, -ret1, |
| 1281 | "Failed to create snapshot '%s' on device '%s'", |
| 1282 | name, device); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1283 | return; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1284 | } |
| 1285 | |
| 1286 | /* 4. succeed, mark a snapshot is created */ |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1287 | state->created = true; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1288 | } |
| 1289 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1290 | static void internal_snapshot_abort(void *opaque) |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1291 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1292 | InternalSnapshotState *state = opaque; |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1293 | BlockDriverState *bs = state->bs; |
| 1294 | QEMUSnapshotInfo *sn = &state->sn; |
| 1295 | Error *local_error = NULL; |
| 1296 | |
Kevin Wolf | a32e781 | 2023-09-29 16:51:42 +0200 | [diff] [blame] | 1297 | GLOBAL_STATE_CODE(); |
| 1298 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 1299 | |
Fam Zheng | 507306c | 2015-10-23 11:08:13 +0800 | [diff] [blame] | 1300 | if (!state->created) { |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1301 | return; |
| 1302 | } |
| 1303 | |
| 1304 | 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] | 1305 | error_reportf_err(local_error, |
| 1306 | "Failed to delete snapshot with id '%s' and " |
| 1307 | "name '%s' on device '%s' in abort: ", |
| 1308 | sn->id_str, sn->name, |
| 1309 | bdrv_get_device_name(bs)); |
Wenchao Xia | bbe8601 | 2013-09-11 14:04:34 +0800 | [diff] [blame] | 1310 | } |
| 1311 | } |
| 1312 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1313 | static void internal_snapshot_clean(void *opaque) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1314 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1315 | g_autofree InternalSnapshotState *state = opaque; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1316 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1317 | if (!state->bs) { |
| 1318 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1319 | } |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1320 | |
Stefan Hajnoczi | a36e458 | 2017-12-06 14:45:46 +0000 | [diff] [blame] | 1321 | bdrv_drained_end(state->bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1322 | } |
| 1323 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1324 | /* external snapshot private data */ |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1325 | typedef struct ExternalSnapshotState { |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1326 | BlockDriverState *old_bs; |
| 1327 | BlockDriverState *new_bs; |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1328 | bool overlay_appended; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1329 | } ExternalSnapshotState; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 1330 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1331 | static void external_snapshot_commit(void *opaque); |
| 1332 | static void external_snapshot_abort(void *opaque); |
| 1333 | static void external_snapshot_clean(void *opaque); |
| 1334 | TransactionActionDrv external_snapshot_drv = { |
| 1335 | .commit = external_snapshot_commit, |
| 1336 | .abort = external_snapshot_abort, |
| 1337 | .clean = external_snapshot_clean, |
| 1338 | }; |
| 1339 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1340 | static void external_snapshot_action(TransactionAction *action, |
| 1341 | Transaction *tran, Error **errp) |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1342 | { |
Vladimir Sementsov-Ogievskiy | 934aee1 | 2021-02-02 15:49:44 +0300 | [diff] [blame] | 1343 | int ret; |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1344 | int flags = 0; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1345 | QDict *options = NULL; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1346 | Error *local_err = NULL; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1347 | /* Device and node name of the image to generate the snapshot from */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1348 | const char *device; |
Benoît Canet | 0901f67 | 2014-01-23 21:31:38 +0100 | [diff] [blame] | 1349 | const char *node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1350 | /* Reference to the new image (for 'blockdev-snapshot') */ |
| 1351 | const char *snapshot_ref; |
| 1352 | /* File name of the new image (for 'blockdev-snapshot-sync') */ |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1353 | const char *new_image_file; |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1354 | ExternalSnapshotState *state = g_new0(ExternalSnapshotState, 1); |
Kevin Wolf | d29d3d1 | 2020-03-10 12:38:26 +0100 | [diff] [blame] | 1355 | uint64_t perm, shared; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1356 | |
Kevin Wolf | bce73bc | 2023-09-11 11:46:13 +0200 | [diff] [blame] | 1357 | /* TODO We'll eventually have to take a writer lock in this function */ |
| 1358 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 1359 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1360 | tran_add(tran, &external_snapshot_drv, state); |
| 1361 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1362 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
| 1363 | * purpose but a different set of parameters */ |
| 1364 | switch (action->type) { |
| 1365 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 1366 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1367 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1368 | device = s->node; |
| 1369 | node_name = s->node; |
| 1370 | new_image_file = NULL; |
| 1371 | snapshot_ref = s->overlay; |
| 1372 | } |
| 1373 | break; |
| 1374 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 1375 | { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1376 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 1377 | device = s->device; |
| 1378 | node_name = s->node_name; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1379 | new_image_file = s->snapshot_file; |
| 1380 | snapshot_ref = NULL; |
| 1381 | } |
| 1382 | break; |
| 1383 | default: |
| 1384 | g_assert_not_reached(); |
Wenchao Xia | e2a31e8 | 2013-05-08 18:25:13 +0800 | [diff] [blame] | 1385 | } |
| 1386 | |
| 1387 | /* start processing */ |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 1388 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1389 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
| 1390 | if (!state->old_bs) { |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1391 | return; |
| 1392 | } |
| 1393 | |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1394 | /* Paired with .clean() */ |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1395 | bdrv_drained_begin(state->old_bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1396 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1397 | if (!bdrv_is_inserted(state->old_bs)) { |
Philippe Mathieu-Daudé | a95921f | 2024-03-12 15:13:36 +0100 | [diff] [blame] | 1398 | error_setg(errp, "Device '%s' has no medium", |
Markus Armbruster | 7fcb8c8 | 2024-03-06 15:28:31 +0100 | [diff] [blame] | 1399 | bdrv_get_device_or_node_name(state->old_bs)); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1400 | return; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1401 | } |
| 1402 | |
Fam Zheng | 3718d8a | 2014-05-23 21:29:43 +0800 | [diff] [blame] | 1403 | if (bdrv_op_is_blocked(state->old_bs, |
| 1404 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1405 | return; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1406 | } |
| 1407 | |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1408 | if (!bdrv_is_read_only(state->old_bs)) { |
Markus Armbruster | 540d91b | 2024-05-13 16:16:58 +0200 | [diff] [blame] | 1409 | ret = bdrv_flush(state->old_bs); |
| 1410 | if (ret < 0) { |
| 1411 | error_setg_errno(errp, -ret, "Write to node '%s' failed", |
| 1412 | bdrv_get_device_or_node_name(state->old_bs)); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1413 | return; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1414 | } |
| 1415 | } |
| 1416 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1417 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 1418 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 1419 | const char *format = s->format ?: "qcow2"; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1420 | enum NewImageMode mode; |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 1421 | const char *snapshot_node_name = s->snapshot_node_name; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1422 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1423 | if (node_name && !snapshot_node_name) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 1424 | error_setg(errp, "New overlay node-name missing"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1425 | return; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1426 | } |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1427 | |
| 1428 | if (snapshot_node_name && |
| 1429 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 1430 | error_setg(errp, "New overlay node-name already in use"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1431 | return; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1432 | } |
| 1433 | |
| 1434 | flags = state->old_bs->open_flags; |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 1435 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_COPY_ON_READ); |
| 1436 | flags |= BDRV_O_NO_BACKING; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1437 | |
| 1438 | /* create new image w/backing file */ |
| 1439 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1440 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1441 | int64_t size = bdrv_getlength(state->old_bs); |
| 1442 | if (size < 0) { |
| 1443 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1444 | return; |
Kevin Wolf | f86b8b5 | 2016-03-02 12:16:44 +0100 | [diff] [blame] | 1445 | } |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 1446 | bdrv_refresh_filename(state->old_bs); |
Kevin Wolf | e135505 | 2022-12-07 14:18:30 +0100 | [diff] [blame] | 1447 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1448 | bdrv_img_create(new_image_file, format, |
| 1449 | state->old_bs->filename, |
| 1450 | state->old_bs->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 1451 | NULL, size, flags, false, &local_err); |
Kevin Wolf | e135505 | 2022-12-07 14:18:30 +0100 | [diff] [blame] | 1452 | |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1453 | if (local_err) { |
| 1454 | error_propagate(errp, local_err); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1455 | return; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1456 | } |
| 1457 | } |
| 1458 | |
| 1459 | options = qdict_new(); |
Peter Maydell | d52e1a0 | 2018-11-01 16:30:37 +0000 | [diff] [blame] | 1460 | if (snapshot_node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1461 | qdict_put_str(options, "node-name", snapshot_node_name); |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1462 | } |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 1463 | qdict_put_str(options, "driver", format); |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1464 | } |
| 1465 | |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1466 | state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags, |
| 1467 | errp); |
Kevin Wolf | c6e0a6d | 2023-05-25 14:47:04 +0200 | [diff] [blame] | 1468 | |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1469 | /* We will manually add the backing_hd field to the bs later */ |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 1470 | if (!state->new_bs) { |
Kevin Wolf | c6e0a6d | 2023-05-25 14:47:04 +0200 | [diff] [blame] | 1471 | return; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1472 | } |
| 1473 | |
Kevin Wolf | d29d3d1 | 2020-03-10 12:38:26 +0100 | [diff] [blame] | 1474 | /* |
| 1475 | * Allow attaching a backing file to an overlay that's already in use only |
| 1476 | * if the parents don't assume that they are already seeing a valid image. |
| 1477 | * (Specifically, allow it as a mirror target, which is write-only access.) |
| 1478 | */ |
| 1479 | bdrv_get_cumulative_perm(state->new_bs, &perm, &shared); |
| 1480 | if (perm & BLK_PERM_CONSISTENT_READ) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1481 | error_setg(errp, "The overlay is already in use"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1482 | return; |
Alberto Garcia | 43de7e2 | 2015-10-26 14:27:16 +0200 | [diff] [blame] | 1483 | } |
| 1484 | |
Max Reitz | 7cc734a | 2019-06-12 18:34:46 +0200 | [diff] [blame] | 1485 | if (state->new_bs->drv->is_filter) { |
| 1486 | error_setg(errp, "Filters cannot be used as overlays"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1487 | return; |
Max Reitz | 7cc734a | 2019-06-12 18:34:46 +0200 | [diff] [blame] | 1488 | } |
| 1489 | |
| 1490 | if (bdrv_cow_child(state->new_bs)) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1491 | error_setg(errp, "The overlay already has a backing image"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1492 | return; |
Alberto Garcia | 08b24cf | 2015-11-03 12:32:35 +0200 | [diff] [blame] | 1493 | } |
| 1494 | |
| 1495 | if (!state->new_bs->drv->supports_backing) { |
Max Reitz | a2bb6f8 | 2019-06-03 22:22:36 +0200 | [diff] [blame] | 1496 | error_setg(errp, "The overlay does not support backing images"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1497 | return; |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1498 | } |
| 1499 | |
Vladimir Sementsov-Ogievskiy | 934aee1 | 2021-02-02 15:49:44 +0300 | [diff] [blame] | 1500 | ret = bdrv_append(state->new_bs, state->old_bs, errp); |
| 1501 | if (ret < 0) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1502 | return; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1503 | } |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1504 | state->overlay_appended = true; |
Wenchao Xia | 9b9877e | 2013-05-08 18:25:12 +0800 | [diff] [blame] | 1505 | } |
| 1506 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1507 | static void external_snapshot_commit(void *opaque) |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1508 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1509 | ExternalSnapshotState *state = opaque; |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 1510 | |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1511 | /* We don't need (or want) to use the transactional |
| 1512 | * bdrv_reopen_multiple() across all the entries at once, because we |
| 1513 | * 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] | 1514 | if (!qatomic_read(&state->old_bs->copy_on_read)) { |
Alberto Garcia | 1b57774 | 2018-11-12 16:00:39 +0200 | [diff] [blame] | 1515 | bdrv_reopen_set_read_only(state->old_bs, true, NULL); |
Kevin Wolf | 4c84498 | 2016-02-29 13:12:26 +0100 | [diff] [blame] | 1516 | } |
Wenchao Xia | 3b0047e | 2013-05-08 18:25:14 +0800 | [diff] [blame] | 1517 | } |
| 1518 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1519 | static void external_snapshot_abort(void *opaque) |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1520 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1521 | ExternalSnapshotState *state = opaque; |
Stefan Hajnoczi | ba5d6ab | 2013-06-24 17:13:15 +0200 | [diff] [blame] | 1522 | if (state->new_bs) { |
Kevin Wolf | 067acf2 | 2017-03-02 15:26:18 +0100 | [diff] [blame] | 1523 | if (state->overlay_appended) { |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1524 | AioContext *aio_context; |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1525 | AioContext *tmp_context; |
| 1526 | int ret; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1527 | |
| 1528 | aio_context = bdrv_get_aio_context(state->old_bs); |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1529 | |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1530 | bdrv_ref(state->old_bs); /* we can't let bdrv_set_backind_hd() |
| 1531 | close state->old_bs; we need it */ |
| 1532 | bdrv_set_backing_hd(state->new_bs, NULL, &error_abort); |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1533 | |
| 1534 | /* |
| 1535 | * The call to bdrv_set_backing_hd() above returns state->old_bs to |
| 1536 | * the main AioContext. As we're still going to be using it, return |
| 1537 | * it to the AioContext it was before. |
| 1538 | */ |
| 1539 | tmp_context = bdrv_get_aio_context(state->old_bs); |
| 1540 | if (aio_context != tmp_context) { |
Emanuele Giuseppe Esposito | 142e690 | 2022-10-25 04:49:52 -0400 | [diff] [blame] | 1541 | ret = bdrv_try_change_aio_context(state->old_bs, |
| 1542 | aio_context, NULL, NULL); |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1543 | assert(ret == 0); |
Sergio Lopez | 377410f | 2020-01-08 15:31:37 +0100 | [diff] [blame] | 1544 | } |
| 1545 | |
Kevin Wolf | ccd6a37 | 2023-10-27 17:53:25 +0200 | [diff] [blame] | 1546 | bdrv_drained_begin(state->new_bs); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1547 | bdrv_graph_wrlock(); |
Kevin Wolf | 5fe31c2 | 2017-03-06 16:20:51 +0100 | [diff] [blame] | 1548 | bdrv_replace_node(state->new_bs, state->old_bs, &error_abort); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1549 | bdrv_graph_wrunlock(); |
Kevin Wolf | ccd6a37 | 2023-10-27 17:53:25 +0200 | [diff] [blame] | 1550 | bdrv_drained_end(state->new_bs); |
| 1551 | |
Jeff Cody | 719fc28 | 2017-06-07 09:55:22 -0400 | [diff] [blame] | 1552 | bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */ |
Kevin Wolf | b2c2832 | 2017-02-20 12:46:42 +0100 | [diff] [blame] | 1553 | } |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1554 | } |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1555 | } |
| 1556 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1557 | static void external_snapshot_clean(void *opaque) |
Fam Zheng | da763e8 | 2015-10-23 11:08:10 +0800 | [diff] [blame] | 1558 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1559 | g_autofree ExternalSnapshotState *state = opaque; |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1560 | |
| 1561 | if (!state->old_bs) { |
| 1562 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1563 | } |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1564 | |
Stefan Hajnoczi | 2d24b60 | 2017-12-06 14:45:43 +0000 | [diff] [blame] | 1565 | bdrv_drained_end(state->old_bs); |
| 1566 | bdrv_unref(state->new_bs); |
Wenchao Xia | 96b86bf | 2013-05-08 18:25:15 +0800 | [diff] [blame] | 1567 | } |
| 1568 | |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1569 | typedef struct DriveBackupState { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1570 | BlockDriverState *bs; |
| 1571 | BlockJob *job; |
| 1572 | } DriveBackupState; |
| 1573 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1574 | static BlockJob *do_backup_common(BackupCommon *backup, |
| 1575 | BlockDriverState *bs, |
| 1576 | BlockDriverState *target_bs, |
| 1577 | AioContext *aio_context, |
| 1578 | JobTxn *txn, Error **errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 1579 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1580 | static void drive_backup_commit(void *opaque); |
| 1581 | static void drive_backup_abort(void *opaque); |
| 1582 | static void drive_backup_clean(void *opaque); |
| 1583 | TransactionActionDrv drive_backup_drv = { |
| 1584 | .commit = drive_backup_commit, |
| 1585 | .abort = drive_backup_abort, |
| 1586 | .clean = drive_backup_clean, |
| 1587 | }; |
| 1588 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1589 | static void drive_backup_action(DriveBackup *backup, |
| 1590 | JobTxn *block_job_txn, |
| 1591 | Transaction *tran, Error **errp) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1592 | { |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1593 | DriveBackupState *state = g_new0(DriveBackupState, 1); |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1594 | BlockDriverState *bs; |
| 1595 | BlockDriverState *target_bs; |
| 1596 | BlockDriverState *source = NULL; |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1597 | AioContext *aio_context; |
Markus Armbruster | 04658a5 | 2022-11-04 17:06:50 +0100 | [diff] [blame] | 1598 | const char *format; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1599 | QDict *options; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1600 | Error *local_err = NULL; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1601 | int flags; |
| 1602 | int64_t size; |
| 1603 | bool set_backing_hd = false; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1604 | int ret; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1605 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1606 | GLOBAL_STATE_CODE(); |
| 1607 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1608 | tran_add(tran, &drive_backup_drv, state); |
| 1609 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1610 | if (!backup->has_mode) { |
| 1611 | backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
| 1612 | } |
| 1613 | |
Vladimir Sementsov-Ogievskiy | 85c9d13 | 2019-06-18 17:08:04 +0300 | [diff] [blame] | 1614 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1615 | if (!bs) { |
Fam Zheng | 1fdd4b7 | 2015-10-23 11:08:11 +0800 | [diff] [blame] | 1616 | return; |
| 1617 | } |
| 1618 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1619 | if (!bs->drv) { |
| 1620 | error_setg(errp, "Device has no medium"); |
| 1621 | return; |
| 1622 | } |
| 1623 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1624 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1625 | |
Vladimir Sementsov-Ogievskiy | 2842ff2 | 2021-06-08 10:18:52 -0700 | [diff] [blame] | 1626 | state->bs = bs; |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1627 | /* Paired with .clean() */ |
Kevin Wolf | b7e4fa2 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1628 | bdrv_drained_begin(bs); |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1629 | |
Markus Armbruster | 04658a5 | 2022-11-04 17:06:50 +0100 | [diff] [blame] | 1630 | format = backup->format; |
| 1631 | if (!format && backup->mode != NEW_IMAGE_MODE_EXISTING) { |
| 1632 | format = bs->drv->format_name; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1633 | } |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1634 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1635 | /* Early check to avoid creating target */ |
Kevin Wolf | 277f200 | 2023-09-29 16:51:52 +0200 | [diff] [blame] | 1636 | bdrv_graph_rdlock_main_loop(); |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1637 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
Kevin Wolf | 277f200 | 2023-09-29 16:51:52 +0200 | [diff] [blame] | 1638 | bdrv_graph_rdunlock_main_loop(); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1639 | return; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1640 | } |
| 1641 | |
| 1642 | flags = bs->open_flags | BDRV_O_RDWR; |
| 1643 | |
| 1644 | /* |
| 1645 | * See if we have a backing HD we can use to create our new image |
| 1646 | * on top of. |
| 1647 | */ |
| 1648 | if (backup->sync == MIRROR_SYNC_MODE_TOP) { |
Max Reitz | 2b088c6 | 2019-06-12 17:46:45 +0200 | [diff] [blame] | 1649 | /* |
| 1650 | * Backup will not replace the source by the target, so none |
| 1651 | * of the filters skipped here will be removed (in contrast to |
| 1652 | * mirror). Therefore, we can skip all of them when looking |
| 1653 | * for the first COW relationship. |
| 1654 | */ |
| 1655 | source = bdrv_cow_bs(bdrv_skip_filters(bs)); |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1656 | if (!source) { |
| 1657 | backup->sync = MIRROR_SYNC_MODE_FULL; |
| 1658 | } |
| 1659 | } |
| 1660 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
| 1661 | source = bs; |
| 1662 | flags |= BDRV_O_NO_BACKING; |
| 1663 | set_backing_hd = true; |
| 1664 | } |
Kevin Wolf | ad74751 | 2023-10-27 17:53:17 +0200 | [diff] [blame] | 1665 | bdrv_graph_rdunlock_main_loop(); |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1666 | |
| 1667 | size = bdrv_getlength(bs); |
| 1668 | if (size < 0) { |
| 1669 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1670 | return; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1671 | } |
| 1672 | |
| 1673 | if (backup->mode != NEW_IMAGE_MODE_EXISTING) { |
Markus Armbruster | 04658a5 | 2022-11-04 17:06:50 +0100 | [diff] [blame] | 1674 | assert(format); |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1675 | if (source) { |
Max Reitz | 2b088c6 | 2019-06-12 17:46:45 +0200 | [diff] [blame] | 1676 | /* Implicit filters should not appear in the filename */ |
Kevin Wolf | 430da83 | 2023-10-27 17:53:16 +0200 | [diff] [blame] | 1677 | BlockDriverState *explicit_backing; |
Max Reitz | 2b088c6 | 2019-06-12 17:46:45 +0200 | [diff] [blame] | 1678 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1679 | bdrv_graph_rdlock_main_loop(); |
Kevin Wolf | 430da83 | 2023-10-27 17:53:16 +0200 | [diff] [blame] | 1680 | explicit_backing = bdrv_skip_implicit_filters(source); |
Max Reitz | 2b088c6 | 2019-06-12 17:46:45 +0200 | [diff] [blame] | 1681 | bdrv_refresh_filename(explicit_backing); |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1682 | bdrv_graph_rdunlock_main_loop(); |
| 1683 | |
Markus Armbruster | 04658a5 | 2022-11-04 17:06:50 +0100 | [diff] [blame] | 1684 | bdrv_img_create(backup->target, format, |
Max Reitz | 2b088c6 | 2019-06-12 17:46:45 +0200 | [diff] [blame] | 1685 | explicit_backing->filename, |
| 1686 | explicit_backing->drv->format_name, NULL, |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1687 | size, flags, false, &local_err); |
| 1688 | } else { |
Markus Armbruster | 04658a5 | 2022-11-04 17:06:50 +0100 | [diff] [blame] | 1689 | bdrv_img_create(backup->target, format, NULL, NULL, NULL, |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1690 | size, flags, false, &local_err); |
| 1691 | } |
| 1692 | } |
| 1693 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 1694 | if (local_err) { |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1695 | error_propagate(errp, local_err); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 1696 | return; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1697 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1698 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1699 | options = qdict_new(); |
| 1700 | qdict_put_str(options, "discard", "unmap"); |
| 1701 | qdict_put_str(options, "detect-zeroes", "unmap"); |
Markus Armbruster | 04658a5 | 2022-11-04 17:06:50 +0100 | [diff] [blame] | 1702 | if (format) { |
| 1703 | qdict_put_str(options, "driver", format); |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1704 | } |
| 1705 | |
| 1706 | target_bs = bdrv_open(backup->target, NULL, options, flags, errp); |
| 1707 | if (!target_bs) { |
Kevin Wolf | c6e0a6d | 2023-05-25 14:47:04 +0200 | [diff] [blame] | 1708 | return; |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1709 | } |
| 1710 | |
Emanuele Giuseppe Esposito | 142e690 | 2022-10-25 04:49:52 -0400 | [diff] [blame] | 1711 | ret = bdrv_try_change_aio_context(target_bs, aio_context, NULL, errp); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1712 | if (ret < 0) { |
| 1713 | bdrv_unref(target_bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1714 | return; |
| 1715 | } |
| 1716 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1717 | if (set_backing_hd) { |
Vladimir Sementsov-Ogievskiy | 5a11a1c | 2021-02-02 15:49:46 +0300 | [diff] [blame] | 1718 | if (bdrv_set_backing_hd(target_bs, source, errp) < 0) { |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1719 | goto unref; |
| 1720 | } |
| 1721 | } |
| 1722 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1723 | state->job = do_backup_common(qapi_DriveBackup_base(backup), |
| 1724 | bs, target_bs, aio_context, |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1725 | block_job_txn, errp); |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 1726 | |
| 1727 | unref: |
| 1728 | bdrv_unref(target_bs); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1729 | } |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1730 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1731 | static void drive_backup_commit(void *opaque) |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1732 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1733 | DriveBackupState *state = opaque; |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1734 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1735 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 1736 | job_start(&state->job->job); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1737 | } |
| 1738 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1739 | static void drive_backup_abort(void *opaque) |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1740 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1741 | DriveBackupState *state = opaque; |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1742 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1743 | if (state->job) { |
Hanna Reitz | 4cfb3f0 | 2021-10-06 17:19:32 +0200 | [diff] [blame] | 1744 | job_cancel_sync(&state->job->job, true); |
Stefan Hajnoczi | 3037f36 | 2013-06-24 17:13:17 +0200 | [diff] [blame] | 1745 | } |
| 1746 | } |
| 1747 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1748 | static void drive_backup_clean(void *opaque) |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1749 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1750 | g_autofree DriveBackupState *state = opaque; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1751 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1752 | if (!state->bs) { |
| 1753 | return; |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1754 | } |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1755 | |
Stefan Hajnoczi | 66d5605 | 2017-12-06 14:45:44 +0000 | [diff] [blame] | 1756 | bdrv_drained_end(state->bs); |
Stefan Hajnoczi | 5d6e96e | 2014-11-21 10:48:59 +0000 | [diff] [blame] | 1757 | } |
| 1758 | |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1759 | typedef struct BlockdevBackupState { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1760 | BlockDriverState *bs; |
| 1761 | BlockJob *job; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1762 | } BlockdevBackupState; |
| 1763 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1764 | static void blockdev_backup_commit(void *opaque); |
| 1765 | static void blockdev_backup_abort(void *opaque); |
| 1766 | static void blockdev_backup_clean(void *opaque); |
| 1767 | TransactionActionDrv blockdev_backup_drv = { |
| 1768 | .commit = blockdev_backup_commit, |
| 1769 | .abort = blockdev_backup_abort, |
| 1770 | .clean = blockdev_backup_clean, |
| 1771 | }; |
| 1772 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1773 | static void blockdev_backup_action(BlockdevBackup *backup, |
| 1774 | JobTxn *block_job_txn, |
| 1775 | Transaction *tran, Error **errp) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1776 | { |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1777 | BlockdevBackupState *state = g_new0(BlockdevBackupState, 1); |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1778 | BlockDriverState *bs; |
| 1779 | BlockDriverState *target_bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1780 | AioContext *aio_context; |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1781 | int ret; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1782 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1783 | tran_add(tran, &blockdev_backup_drv, state); |
| 1784 | |
Vladimir Sementsov-Ogievskiy | 930fe17 | 2018-07-02 15:46:29 -0400 | [diff] [blame] | 1785 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1786 | if (!bs) { |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1787 | return; |
| 1788 | } |
| 1789 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1790 | target_bs = bdrv_lookup_bs(backup->target, backup->target, errp); |
| 1791 | if (!target_bs) { |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1792 | return; |
| 1793 | } |
| 1794 | |
Emanuele Giuseppe Esposito | 142e690 | 2022-10-25 04:49:52 -0400 | [diff] [blame] | 1795 | /* Honor bdrv_try_change_aio_context() context acquisition requirements. */ |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1796 | aio_context = bdrv_get_aio_context(bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1797 | |
Emanuele Giuseppe Esposito | 142e690 | 2022-10-25 04:49:52 -0400 | [diff] [blame] | 1798 | ret = bdrv_try_change_aio_context(target_bs, aio_context, NULL, errp); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1799 | if (ret < 0) { |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 1800 | return; |
| 1801 | } |
| 1802 | |
Kevin Wolf | cef34ee | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 1803 | state->bs = bs; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1804 | |
| 1805 | /* Paired with .clean() */ |
Fam Zheng | ff52bf3 | 2015-10-23 11:08:12 +0800 | [diff] [blame] | 1806 | bdrv_drained_begin(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1807 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 1808 | state->job = do_backup_common(qapi_BlockdevBackup_base(backup), |
| 1809 | bs, target_bs, aio_context, |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1810 | block_job_txn, errp); |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1811 | } |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1812 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1813 | static void blockdev_backup_commit(void *opaque) |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1814 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1815 | BlockdevBackupState *state = opaque; |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1816 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1817 | assert(state->job); |
Kevin Wolf | da01ff7 | 2018-04-13 17:31:02 +0200 | [diff] [blame] | 1818 | job_start(&state->job->job); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1819 | } |
| 1820 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1821 | static void blockdev_backup_abort(void *opaque) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1822 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1823 | BlockdevBackupState *state = opaque; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1824 | |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 1825 | if (state->job) { |
Hanna Reitz | 4cfb3f0 | 2021-10-06 17:19:32 +0200 | [diff] [blame] | 1826 | job_cancel_sync(&state->job->job, true); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1827 | } |
| 1828 | } |
| 1829 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1830 | static void blockdev_backup_clean(void *opaque) |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1831 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1832 | g_autofree BlockdevBackupState *state = opaque; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1833 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1834 | if (!state->bs) { |
| 1835 | return; |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1836 | } |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1837 | |
Stefan Hajnoczi | edd5ade | 2017-12-06 14:45:45 +0000 | [diff] [blame] | 1838 | bdrv_drained_end(state->bs); |
Fam Zheng | bd8baec | 2014-12-18 18:37:06 +0800 | [diff] [blame] | 1839 | } |
| 1840 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1841 | typedef struct BlockDirtyBitmapState { |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1842 | BdrvDirtyBitmap *bitmap; |
| 1843 | BlockDriverState *bs; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1844 | HBitmap *backup; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1845 | bool was_enabled; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1846 | } BlockDirtyBitmapState; |
| 1847 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1848 | static void block_dirty_bitmap_add_abort(void *opaque); |
| 1849 | TransactionActionDrv block_dirty_bitmap_add_drv = { |
| 1850 | .abort = block_dirty_bitmap_add_abort, |
| 1851 | .clean = g_free, |
| 1852 | }; |
| 1853 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1854 | static void block_dirty_bitmap_add_action(BlockDirtyBitmapAdd *action, |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1855 | Transaction *tran, Error **errp) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1856 | { |
| 1857 | Error *local_err = NULL; |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1858 | BlockDirtyBitmapState *state = g_new0(BlockDirtyBitmapState, 1); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1859 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1860 | tran_add(tran, &block_dirty_bitmap_add_drv, state); |
| 1861 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1862 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
| 1863 | qmp_block_dirty_bitmap_add(action->node, action->name, |
| 1864 | action->has_granularity, action->granularity, |
Vladimir Sementsov-Ogievskiy | fd5ae4c | 2017-06-28 15:05:23 +0300 | [diff] [blame] | 1865 | action->has_persistent, action->persistent, |
John Snow | 0e2b7f0 | 2018-12-21 04:35:22 -0500 | [diff] [blame] | 1866 | action->has_disabled, action->disabled, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1867 | &local_err); |
| 1868 | |
| 1869 | if (!local_err) { |
Vladimir Sementsov-Ogievskiy | c85feaf | 2023-05-10 18:06:23 +0300 | [diff] [blame] | 1870 | state->bitmap = block_dirty_bitmap_lookup(action->node, action->name, |
| 1871 | NULL, &error_abort); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1872 | } else { |
| 1873 | error_propagate(errp, local_err); |
| 1874 | } |
| 1875 | } |
| 1876 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1877 | static void block_dirty_bitmap_add_abort(void *opaque) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1878 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1879 | BlockDirtyBitmapState *state = opaque; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1880 | |
Vladimir Sementsov-Ogievskiy | c85feaf | 2023-05-10 18:06:23 +0300 | [diff] [blame] | 1881 | if (state->bitmap) { |
| 1882 | bdrv_release_dirty_bitmap(state->bitmap); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1883 | } |
| 1884 | } |
| 1885 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1886 | static void block_dirty_bitmap_restore(void *opaque); |
| 1887 | static void block_dirty_bitmap_free_backup(void *opaque); |
| 1888 | TransactionActionDrv block_dirty_bitmap_clear_drv = { |
| 1889 | .abort = block_dirty_bitmap_restore, |
| 1890 | .commit = block_dirty_bitmap_free_backup, |
| 1891 | .clean = g_free, |
| 1892 | }; |
| 1893 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1894 | static void block_dirty_bitmap_clear_action(BlockDirtyBitmap *action, |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1895 | Transaction *tran, Error **errp) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1896 | { |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1897 | BlockDirtyBitmapState *state = g_new0(BlockDirtyBitmapState, 1); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1898 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1899 | tran_add(tran, &block_dirty_bitmap_clear_drv, state); |
| 1900 | |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1901 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 1902 | action->name, |
| 1903 | &state->bs, |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1904 | errp); |
| 1905 | if (!state->bitmap) { |
| 1906 | return; |
| 1907 | } |
| 1908 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 1909 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_DEFAULT, errp)) { |
Vladimir Sementsov-Ogievskiy | d6883bc | 2017-06-28 15:05:10 +0300 | [diff] [blame] | 1910 | return; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1911 | } |
| 1912 | |
| 1913 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1914 | } |
| 1915 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1916 | static void block_dirty_bitmap_restore(void *opaque) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1917 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1918 | BlockDirtyBitmapState *state = opaque; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1919 | |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 1920 | if (state->backup) { |
Vladimir Sementsov-Ogievskiy | 56bd662 | 2018-10-29 16:23:14 -0400 | [diff] [blame] | 1921 | bdrv_restore_dirty_bitmap(state->bitmap, state->backup); |
John Snow | 184dd9c | 2017-03-15 17:28:11 -0400 | [diff] [blame] | 1922 | } |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1923 | } |
| 1924 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1925 | static void block_dirty_bitmap_free_backup(void *opaque) |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1926 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1927 | BlockDirtyBitmapState *state = opaque; |
Fam Zheng | df9a681 | 2015-11-09 18:16:54 +0800 | [diff] [blame] | 1928 | |
| 1929 | hbitmap_free(state->backup); |
| 1930 | } |
| 1931 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1932 | static void block_dirty_bitmap_enable_abort(void *opaque); |
| 1933 | TransactionActionDrv block_dirty_bitmap_enable_drv = { |
| 1934 | .abort = block_dirty_bitmap_enable_abort, |
| 1935 | .clean = g_free, |
| 1936 | }; |
| 1937 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1938 | static void block_dirty_bitmap_enable_action(BlockDirtyBitmap *action, |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1939 | Transaction *tran, Error **errp) |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1940 | { |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1941 | BlockDirtyBitmapState *state = g_new0(BlockDirtyBitmapState, 1); |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1942 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1943 | tran_add(tran, &block_dirty_bitmap_enable_drv, state); |
| 1944 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1945 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 1946 | action->name, |
| 1947 | NULL, |
| 1948 | errp); |
| 1949 | if (!state->bitmap) { |
| 1950 | return; |
| 1951 | } |
| 1952 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 1953 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | b053bb5 | 2018-10-29 16:23:16 -0400 | [diff] [blame] | 1954 | return; |
| 1955 | } |
| 1956 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1957 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 1958 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 1959 | } |
| 1960 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1961 | static void block_dirty_bitmap_enable_abort(void *opaque) |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1962 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1963 | BlockDirtyBitmapState *state = opaque; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1964 | |
| 1965 | if (!state->was_enabled) { |
| 1966 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 1967 | } |
| 1968 | } |
| 1969 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1970 | static void block_dirty_bitmap_disable_abort(void *opaque); |
| 1971 | TransactionActionDrv block_dirty_bitmap_disable_drv = { |
| 1972 | .abort = block_dirty_bitmap_disable_abort, |
| 1973 | .clean = g_free, |
| 1974 | }; |
| 1975 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1976 | static void block_dirty_bitmap_disable_action(BlockDirtyBitmap *action, |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1977 | Transaction *tran, Error **errp) |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1978 | { |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 1979 | BlockDirtyBitmapState *state = g_new0(BlockDirtyBitmapState, 1); |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1980 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1981 | tran_add(tran, &block_dirty_bitmap_disable_drv, state); |
| 1982 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1983 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
| 1984 | action->name, |
| 1985 | NULL, |
| 1986 | errp); |
| 1987 | if (!state->bitmap) { |
| 1988 | return; |
| 1989 | } |
| 1990 | |
John Snow | 3ae96d6 | 2019-03-12 12:05:49 -0400 | [diff] [blame] | 1991 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | b053bb5 | 2018-10-29 16:23:16 -0400 | [diff] [blame] | 1992 | return; |
| 1993 | } |
| 1994 | |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 1995 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
| 1996 | bdrv_disable_dirty_bitmap(state->bitmap); |
| 1997 | } |
| 1998 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 1999 | static void block_dirty_bitmap_disable_abort(void *opaque) |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2000 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2001 | BlockDirtyBitmapState *state = opaque; |
Vladimir Sementsov-Ogievskiy | c649044 | 2018-06-11 14:53:32 -0400 | [diff] [blame] | 2002 | |
| 2003 | if (state->was_enabled) { |
| 2004 | bdrv_enable_dirty_bitmap(state->bitmap); |
| 2005 | } |
| 2006 | } |
| 2007 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2008 | TransactionActionDrv block_dirty_bitmap_merge_drv = { |
| 2009 | .commit = block_dirty_bitmap_free_backup, |
| 2010 | .abort = block_dirty_bitmap_restore, |
| 2011 | .clean = g_free, |
| 2012 | }; |
| 2013 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 2014 | static void block_dirty_bitmap_merge_action(BlockDirtyBitmapMerge *action, |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2015 | Transaction *tran, Error **errp) |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2016 | { |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 2017 | BlockDirtyBitmapState *state = g_new0(BlockDirtyBitmapState, 1); |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2018 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2019 | tran_add(tran, &block_dirty_bitmap_merge_drv, state); |
| 2020 | |
Eric Blake | c6996cf | 2020-05-12 20:16:43 -0500 | [diff] [blame] | 2021 | state->bitmap = block_dirty_bitmap_merge(action->node, action->target, |
| 2022 | action->bitmaps, &state->backup, |
| 2023 | errp); |
Vladimir Sementsov-Ogievskiy | 6fd2e40 | 2018-10-29 16:23:15 -0400 | [diff] [blame] | 2024 | } |
| 2025 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2026 | static void block_dirty_bitmap_remove_commit(void *opaque); |
| 2027 | static void block_dirty_bitmap_remove_abort(void *opaque); |
| 2028 | TransactionActionDrv block_dirty_bitmap_remove_drv = { |
| 2029 | .commit = block_dirty_bitmap_remove_commit, |
| 2030 | .abort = block_dirty_bitmap_remove_abort, |
| 2031 | .clean = g_free, |
| 2032 | }; |
| 2033 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 2034 | static void block_dirty_bitmap_remove_action(BlockDirtyBitmap *action, |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2035 | Transaction *tran, Error **errp) |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2036 | { |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 2037 | BlockDirtyBitmapState *state = g_new0(BlockDirtyBitmapState, 1); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2038 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2039 | tran_add(tran, &block_dirty_bitmap_remove_drv, state); |
| 2040 | |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2041 | |
Eric Blake | c6996cf | 2020-05-12 20:16:43 -0500 | [diff] [blame] | 2042 | state->bitmap = block_dirty_bitmap_remove(action->node, action->name, |
| 2043 | false, &state->bs, errp); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2044 | if (state->bitmap) { |
| 2045 | bdrv_dirty_bitmap_skip_store(state->bitmap, true); |
| 2046 | bdrv_dirty_bitmap_set_busy(state->bitmap, true); |
| 2047 | } |
| 2048 | } |
| 2049 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2050 | static void block_dirty_bitmap_remove_abort(void *opaque) |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2051 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2052 | BlockDirtyBitmapState *state = opaque; |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2053 | |
| 2054 | if (state->bitmap) { |
| 2055 | bdrv_dirty_bitmap_skip_store(state->bitmap, false); |
| 2056 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); |
| 2057 | } |
| 2058 | } |
| 2059 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2060 | static void block_dirty_bitmap_remove_commit(void *opaque) |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2061 | { |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2062 | BlockDirtyBitmapState *state = opaque; |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2063 | |
| 2064 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); |
Vladimir Sementsov-Ogievskiy | 5deb6cb | 2019-09-16 17:19:09 +0300 | [diff] [blame] | 2065 | bdrv_release_dirty_bitmap(state->bitmap); |
John Snow | c4e4b0f | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2066 | } |
| 2067 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2068 | static void abort_commit(void *opaque); |
| 2069 | TransactionActionDrv abort_drv = { |
| 2070 | .commit = abort_commit, |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2071 | }; |
| 2072 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 2073 | static void abort_action(Transaction *tran, Error **errp) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2074 | { |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 2075 | tran_add(tran, &abort_drv, NULL); |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2076 | error_setg(errp, "Transaction aborted using Abort action"); |
| 2077 | } |
| 2078 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2079 | static void abort_commit(void *opaque) |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2080 | { |
Stefan Weil | dfc6f86 | 2013-07-25 18:21:28 +0200 | [diff] [blame] | 2081 | g_assert_not_reached(); /* this action never succeeds */ |
Stefan Hajnoczi | 78b18b7 | 2013-06-24 17:13:18 +0200 | [diff] [blame] | 2082 | } |
| 2083 | |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 2084 | static void transaction_action(TransactionAction *act, JobTxn *block_job_txn, |
| 2085 | Transaction *tran, Error **errp) |
| 2086 | { |
| 2087 | switch (act->type) { |
| 2088 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: |
| 2089 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: |
| 2090 | external_snapshot_action(act, tran, errp); |
| 2091 | return; |
| 2092 | case TRANSACTION_ACTION_KIND_DRIVE_BACKUP: |
| 2093 | drive_backup_action(act->u.drive_backup.data, |
| 2094 | block_job_txn, tran, errp); |
| 2095 | return; |
| 2096 | case TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP: |
| 2097 | blockdev_backup_action(act->u.blockdev_backup.data, |
| 2098 | block_job_txn, tran, errp); |
| 2099 | return; |
| 2100 | case TRANSACTION_ACTION_KIND_ABORT: |
| 2101 | abort_action(tran, errp); |
| 2102 | return; |
| 2103 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC: |
| 2104 | internal_snapshot_action(act->u.blockdev_snapshot_internal_sync.data, |
| 2105 | tran, errp); |
| 2106 | return; |
| 2107 | case TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD: |
| 2108 | block_dirty_bitmap_add_action(act->u.block_dirty_bitmap_add.data, |
| 2109 | tran, errp); |
| 2110 | return; |
| 2111 | case TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR: |
| 2112 | block_dirty_bitmap_clear_action(act->u.block_dirty_bitmap_clear.data, |
| 2113 | tran, errp); |
| 2114 | return; |
| 2115 | case TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ENABLE: |
| 2116 | block_dirty_bitmap_enable_action(act->u.block_dirty_bitmap_enable.data, |
| 2117 | tran, errp); |
| 2118 | return; |
| 2119 | case TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_DISABLE: |
| 2120 | block_dirty_bitmap_disable_action( |
| 2121 | act->u.block_dirty_bitmap_disable.data, tran, errp); |
| 2122 | return; |
| 2123 | case TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_MERGE: |
| 2124 | block_dirty_bitmap_merge_action(act->u.block_dirty_bitmap_merge.data, |
| 2125 | tran, errp); |
| 2126 | return; |
| 2127 | case TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_REMOVE: |
| 2128 | block_dirty_bitmap_remove_action(act->u.block_dirty_bitmap_remove.data, |
| 2129 | tran, errp); |
| 2130 | return; |
| 2131 | /* |
| 2132 | * Where are transactions for MIRROR, COMMIT and STREAM? |
John Snow | 66da04d | 2018-09-06 09:02:25 -0400 | [diff] [blame] | 2133 | * Although these blockjobs use transaction callbacks like the backup job, |
| 2134 | * these jobs do not necessarily adhere to transaction semantics. |
| 2135 | * These jobs may not fully undo all of their actions on abort, nor do they |
| 2136 | * necessarily work in transactions with more than one job in them. |
| 2137 | */ |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 2138 | case TRANSACTION_ACTION_KIND__MAX: |
| 2139 | default: |
| 2140 | g_assert_not_reached(); |
| 2141 | }; |
| 2142 | } |
| 2143 | |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2144 | |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2145 | /* |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2146 | * 'Atomic' group operations. The operations are performed as a set, and if |
| 2147 | * any fail then we roll back all operations in the group. |
Emanuele Giuseppe Esposito | ebc2752 | 2022-03-03 10:15:56 -0500 | [diff] [blame] | 2148 | * |
| 2149 | * Always run under BQL. |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2150 | */ |
Vladimir Sementsov-Ogievskiy | 2403969 | 2023-05-10 18:06:20 +0300 | [diff] [blame] | 2151 | void qmp_transaction(TransactionActionList *actions, |
| 2152 | struct TransactionProperties *properties, |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2153 | Error **errp) |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2154 | { |
Vladimir Sementsov-Ogievskiy | 30c96b5 | 2023-05-10 18:06:21 +0300 | [diff] [blame] | 2155 | TransactionActionList *act; |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2156 | JobTxn *block_job_txn = NULL; |
Luiz Capitulino | 43e1704 | 2012-11-30 10:52:07 -0200 | [diff] [blame] | 2157 | Error *local_err = NULL; |
Vladimir Sementsov-Ogievskiy | c85f34c | 2023-05-10 18:06:22 +0300 | [diff] [blame] | 2158 | Transaction *tran; |
| 2159 | ActionCompletionMode comp_mode = |
| 2160 | properties ? properties->completion_mode : |
| 2161 | ACTION_COMPLETION_MODE_INDIVIDUAL; |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2162 | |
Emanuele Giuseppe Esposito | b4ad82a | 2022-03-03 10:15:57 -0500 | [diff] [blame] | 2163 | GLOBAL_STATE_CODE(); |
| 2164 | |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2165 | /* Does this transaction get canceled as a group on failure? |
Kevin Wolf | 62c9e41 | 2018-04-19 16:09:52 +0200 | [diff] [blame] | 2166 | * If not, we don't really need to make a JobTxn. |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2167 | */ |
Vladimir Sementsov-Ogievskiy | c85f34c | 2023-05-10 18:06:22 +0300 | [diff] [blame] | 2168 | if (comp_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { |
| 2169 | for (act = actions; act; act = act->next) { |
| 2170 | TransactionActionKind type = act->value->type; |
| 2171 | |
| 2172 | if (type != TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP && |
| 2173 | type != TRANSACTION_ACTION_KIND_DRIVE_BACKUP) |
| 2174 | { |
| 2175 | error_setg(errp, |
| 2176 | "Action '%s' does not support transaction property " |
| 2177 | "completion-mode = %s", |
| 2178 | TransactionActionKind_str(type), |
| 2179 | ActionCompletionMode_str(comp_mode)); |
| 2180 | return; |
| 2181 | } |
| 2182 | } |
| 2183 | |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2184 | block_job_txn = job_txn_new(); |
John Snow | 94d16a6 | 2015-11-05 18:13:18 -0500 | [diff] [blame] | 2185 | } |
| 2186 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2187 | /* drain all i/o before any operations */ |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2188 | bdrv_drain_all(); |
| 2189 | |
Vladimir Sementsov-Ogievskiy | c85f34c | 2023-05-10 18:06:22 +0300 | [diff] [blame] | 2190 | tran = tran_new(); |
| 2191 | |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2192 | /* We don't do anything in this loop that commits us to the operations */ |
Vladimir Sementsov-Ogievskiy | 30c96b5 | 2023-05-10 18:06:21 +0300 | [diff] [blame] | 2193 | for (act = actions; act; act = act->next) { |
Vladimir Sementsov-Ogievskiy | d53c89a | 2023-05-10 18:06:24 +0300 | [diff] [blame] | 2194 | transaction_action(act->value, block_job_txn, tran, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2195 | if (local_err) { |
Wenchao Xia | ba0c86a | 2013-05-08 18:25:16 +0800 | [diff] [blame] | 2196 | error_propagate(errp, local_err); |
| 2197 | goto delete_and_fail; |
Paolo Bonzini | 52e7c24 | 2012-03-06 18:55:57 +0100 | [diff] [blame] | 2198 | } |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2199 | } |
| 2200 | |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2201 | tran_commit(tran); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2202 | |
| 2203 | /* success */ |
| 2204 | goto exit; |
| 2205 | |
| 2206 | delete_and_fail: |
Stefan Hajnoczi | b756b9c | 2014-11-21 10:48:57 +0000 | [diff] [blame] | 2207 | /* failure, and it is all-or-none; roll back all operations */ |
Vladimir Sementsov-Ogievskiy | 8187f63 | 2023-05-10 18:06:19 +0300 | [diff] [blame] | 2208 | tran_abort(tran); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2209 | exit: |
Kevin Wolf | 7eaa8fb | 2018-04-23 16:06:26 +0200 | [diff] [blame] | 2210 | job_txn_unref(block_job_txn); |
Jeff Cody | 8802d1f | 2012-02-28 15:54:06 -0500 | [diff] [blame] | 2211 | } |
| 2212 | |
Vladimir Sementsov-Ogievskiy | a3b5253 | 2017-06-28 15:05:25 +0300 | [diff] [blame] | 2213 | BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node, |
| 2214 | const char *name, |
| 2215 | Error **errp) |
| 2216 | { |
| 2217 | BdrvDirtyBitmap *bitmap; |
| 2218 | BlockDriverState *bs; |
| 2219 | BlockDirtyBitmapSha256 *ret = NULL; |
| 2220 | char *sha256; |
| 2221 | |
| 2222 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
| 2223 | if (!bitmap || !bs) { |
| 2224 | return NULL; |
| 2225 | } |
| 2226 | |
| 2227 | sha256 = bdrv_dirty_bitmap_sha256(bitmap, errp); |
| 2228 | if (sha256 == NULL) { |
| 2229 | return NULL; |
| 2230 | } |
| 2231 | |
| 2232 | ret = g_new(BlockDirtyBitmapSha256, 1); |
| 2233 | ret->sha256 = sha256; |
| 2234 | |
| 2235 | return ret; |
| 2236 | } |
| 2237 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2238 | void coroutine_fn qmp_block_resize(const char *device, const char *node_name, |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2239 | int64_t size, Error **errp) |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2240 | { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2241 | Error *local_err = NULL; |
Kevin Wolf | d9dbf25 | 2020-12-03 18:23:09 +0100 | [diff] [blame] | 2242 | BlockBackend *blk; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2243 | BlockDriverState *bs; |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2244 | AioContext *old_ctx; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2245 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2246 | bs = bdrv_lookup_bs(device, node_name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2247 | if (local_err) { |
Benoît Canet | 3b1dbd1 | 2014-01-23 21:31:37 +0100 | [diff] [blame] | 2248 | error_propagate(errp, local_err); |
| 2249 | return; |
| 2250 | } |
| 2251 | |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2252 | if (size < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2253 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
Kevin Wolf | d9dbf25 | 2020-12-03 18:23:09 +0100 | [diff] [blame] | 2254 | return; |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2255 | } |
| 2256 | |
Kevin Wolf | 277f200 | 2023-09-29 16:51:52 +0200 | [diff] [blame] | 2257 | bdrv_graph_co_rdlock(); |
Markus Armbruster | 9fe0753 | 2024-03-06 14:10:54 +0100 | [diff] [blame] | 2258 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, errp)) { |
Kevin Wolf | 277f200 | 2023-09-29 16:51:52 +0200 | [diff] [blame] | 2259 | bdrv_graph_co_rdunlock(); |
Kevin Wolf | d9dbf25 | 2020-12-03 18:23:09 +0100 | [diff] [blame] | 2260 | return; |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2261 | } |
Kevin Wolf | 277f200 | 2023-09-29 16:51:52 +0200 | [diff] [blame] | 2262 | bdrv_graph_co_rdunlock(); |
Jeff Cody | 9c75e16 | 2014-06-25 16:55:30 -0400 | [diff] [blame] | 2263 | |
Kevin Wolf | 0c7d204 | 2023-05-04 13:57:34 +0200 | [diff] [blame] | 2264 | blk = blk_co_new_with_bs(bs, BLK_PERM_RESIZE, BLK_PERM_ALL, errp); |
Eric Blake | a3aeeab | 2020-04-28 14:26:46 -0500 | [diff] [blame] | 2265 | if (!blk) { |
Kevin Wolf | d9dbf25 | 2020-12-03 18:23:09 +0100 | [diff] [blame] | 2266 | return; |
Kevin Wolf | d708642 | 2017-01-13 19:02:32 +0100 | [diff] [blame] | 2267 | } |
Kevin Wolf | 7dad9ee | 2017-02-17 11:23:33 +0100 | [diff] [blame] | 2268 | |
John Snow | 698bdfa | 2017-05-10 13:39:45 -0400 | [diff] [blame] | 2269 | bdrv_drained_begin(bs); |
Kevin Wolf | 8089eab | 2020-12-03 18:23:10 +0100 | [diff] [blame] | 2270 | |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2271 | old_ctx = bdrv_co_enter(bs); |
Alberto Faria | 247cf5c | 2022-10-13 14:37:11 +0200 | [diff] [blame] | 2272 | blk_co_truncate(blk, size, false, PREALLOC_MODE_OFF, 0, errp); |
Kevin Wolf | eb94b81 | 2020-10-05 17:58:55 +0200 | [diff] [blame] | 2273 | bdrv_co_leave(bs, old_ctx); |
Stefan Hajnoczi | 927e0e7 | 2014-08-18 14:52:28 +0100 | [diff] [blame] | 2274 | |
Kevin Wolf | 8089eab | 2020-12-03 18:23:10 +0100 | [diff] [blame] | 2275 | bdrv_drained_end(bs); |
Kevin Wolf | 755ae38 | 2023-12-08 13:43:52 +0100 | [diff] [blame] | 2276 | blk_co_unref(blk); |
Christoph Hellwig | 6d4a2b3 | 2011-01-24 13:32:33 +0100 | [diff] [blame] | 2277 | } |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2278 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2279 | void qmp_block_stream(const char *job_id, const char *device, |
| 2280 | const char *base, |
| 2281 | const char *base_node, |
| 2282 | const char *backing_file, |
Peter Krempa | 72098a3 | 2023-12-05 18:14:42 +0100 | [diff] [blame] | 2283 | bool has_backing_mask_protocol, |
| 2284 | bool backing_mask_protocol, |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2285 | const char *bottom, |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2286 | bool has_speed, int64_t speed, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2287 | bool has_on_error, BlockdevOnError on_error, |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2288 | const char *filter_node_name, |
John Snow | 241ca1a | 2018-09-06 09:02:23 -0400 | [diff] [blame] | 2289 | bool has_auto_finalize, bool auto_finalize, |
| 2290 | bool has_auto_dismiss, bool auto_dismiss, |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2291 | Error **errp) |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2292 | { |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2293 | BlockDriverState *bs, *iter, *iter_end; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2294 | BlockDriverState *base_bs = NULL; |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2295 | BlockDriverState *bottom_bs = NULL; |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2296 | AioContext *aio_context; |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 2297 | Error *local_err = NULL; |
John Snow | cf6320d | 2018-09-06 09:02:12 -0400 | [diff] [blame] | 2298 | int job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2299 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 2300 | GLOBAL_STATE_CODE(); |
| 2301 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2302 | if (base && base_node) { |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2303 | error_setg(errp, "'base' and 'base-node' cannot be specified " |
| 2304 | "at the same time"); |
| 2305 | return; |
| 2306 | } |
| 2307 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2308 | if (base && bottom) { |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2309 | error_setg(errp, "'base' and 'bottom' cannot be specified " |
| 2310 | "at the same time"); |
| 2311 | return; |
| 2312 | } |
| 2313 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2314 | if (bottom && base_node) { |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2315 | error_setg(errp, "'bottom' and 'base-node' cannot be specified " |
| 2316 | "at the same time"); |
| 2317 | return; |
| 2318 | } |
| 2319 | |
Peter Krempa | 72098a3 | 2023-12-05 18:14:42 +0100 | [diff] [blame] | 2320 | if (!has_backing_mask_protocol) { |
| 2321 | backing_mask_protocol = false; |
| 2322 | } |
| 2323 | |
Paolo Bonzini | 1d80909 | 2012-09-28 17:22:59 +0200 | [diff] [blame] | 2324 | if (!has_on_error) { |
| 2325 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2326 | } |
| 2327 | |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2328 | bs = bdrv_lookup_bs(device, device, errp); |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2329 | if (!bs) { |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2330 | return; |
| 2331 | } |
| 2332 | |
Kevin Wolf | b6c1bae | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2333 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2334 | |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2335 | bdrv_graph_rdlock_main_loop(); |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2336 | if (base) { |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2337 | base_bs = bdrv_find_backing_image(bs, base); |
| 2338 | if (base_bs == NULL) { |
Markus Armbruster | b0d7be2 | 2020-11-13 09:26:19 +0100 | [diff] [blame] | 2339 | error_setg(errp, "Can't find '%s' in the backing chain", base); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2340 | goto out_rdlock; |
Marcelo Tosatti | c8c3080 | 2012-01-18 14:40:53 +0000 | [diff] [blame] | 2341 | } |
Stefan Hajnoczi | f3e69be | 2014-10-21 12:03:57 +0100 | [diff] [blame] | 2342 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2343 | } |
| 2344 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2345 | if (base_node) { |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2346 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 2347 | if (!base_bs) { |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2348 | goto out_rdlock; |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2349 | } |
| 2350 | if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) { |
| 2351 | error_setg(errp, "Node '%s' is not a backing image of '%s'", |
| 2352 | base_node, device); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2353 | goto out_rdlock; |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2354 | } |
| 2355 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 2356 | |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 2357 | bdrv_refresh_filename(base_bs); |
Alberto Garcia | 312fe09 | 2016-10-28 10:08:19 +0300 | [diff] [blame] | 2358 | } |
| 2359 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2360 | if (bottom) { |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2361 | bottom_bs = bdrv_lookup_bs(NULL, bottom, errp); |
| 2362 | if (!bottom_bs) { |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2363 | goto out_rdlock; |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2364 | } |
| 2365 | if (!bottom_bs->drv) { |
| 2366 | error_setg(errp, "Node '%s' is not open", bottom); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2367 | goto out_rdlock; |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2368 | } |
| 2369 | if (bottom_bs->drv->is_filter) { |
| 2370 | error_setg(errp, "Node '%s' is a filter, use a non-filter node " |
| 2371 | "as 'bottom'", bottom); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2372 | goto out_rdlock; |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2373 | } |
| 2374 | if (!bdrv_chain_contains(bs, bottom_bs)) { |
| 2375 | error_setg(errp, "Node '%s' is not in a chain starting from '%s'", |
| 2376 | bottom, device); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2377 | goto out_rdlock; |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2378 | } |
| 2379 | assert(bdrv_get_aio_context(bottom_bs) == aio_context); |
| 2380 | } |
| 2381 | |
| 2382 | /* |
| 2383 | * Check for op blockers in the whole chain between bs and base (or bottom) |
| 2384 | */ |
Kevin Wolf | 372b69f | 2023-10-27 17:53:15 +0200 | [diff] [blame] | 2385 | iter_end = bottom ? bdrv_filter_or_cow_bs(bottom_bs) : base_bs; |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2386 | for (iter = bs; iter && iter != iter_end; |
Max Reitz | 67acfd2 | 2019-06-12 17:48:11 +0200 | [diff] [blame] | 2387 | iter = bdrv_filter_or_cow_bs(iter)) |
| 2388 | { |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2389 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) { |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2390 | goto out_rdlock; |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2391 | } |
| 2392 | } |
Kevin Wolf | 277f200 | 2023-09-29 16:51:52 +0200 | [diff] [blame] | 2393 | bdrv_graph_rdunlock_main_loop(); |
Alberto Garcia | 554b614 | 2016-10-28 10:08:11 +0300 | [diff] [blame] | 2394 | |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2395 | /* if we are streaming the entire chain, the result will have no backing |
| 2396 | * file, and specifying one is therefore an error */ |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2397 | if (!base_bs && backing_file) { |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2398 | error_setg(errp, "backing file specified, but streaming the " |
| 2399 | "entire chain"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2400 | return; |
Jeff Cody | 13d8cc5 | 2014-06-25 15:40:11 -0400 | [diff] [blame] | 2401 | } |
| 2402 | |
John Snow | 241ca1a | 2018-09-06 09:02:23 -0400 | [diff] [blame] | 2403 | if (has_auto_finalize && !auto_finalize) { |
| 2404 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2405 | } |
| 2406 | if (has_auto_dismiss && !auto_dismiss) { |
| 2407 | job_flags |= JOB_MANUAL_DISMISS; |
| 2408 | } |
| 2409 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2410 | stream_start(job_id, bs, base_bs, backing_file, |
Peter Krempa | 72098a3 | 2023-12-05 18:14:42 +0100 | [diff] [blame] | 2411 | backing_mask_protocol, |
Vladimir Sementsov-Ogievskiy | 7f4a396 | 2020-12-16 09:17:00 +0300 | [diff] [blame] | 2412 | bottom_bs, job_flags, has_speed ? speed : 0, on_error, |
Andrey Shinkevich | 880747a | 2020-12-16 09:16:54 +0300 | [diff] [blame] | 2413 | filter_node_name, &local_err); |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 2414 | if (local_err) { |
Stefan Hajnoczi | fd7f8c6 | 2012-04-25 16:51:00 +0100 | [diff] [blame] | 2415 | error_propagate(errp, local_err); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2416 | return; |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2417 | } |
| 2418 | |
Vladimir Sementsov-Ogievskiy | b23c580 | 2019-06-06 18:41:32 +0300 | [diff] [blame] | 2419 | trace_qmp_block_stream(bs); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 2420 | return; |
| 2421 | |
| 2422 | out_rdlock: |
| 2423 | bdrv_graph_rdunlock_main_loop(); |
Stefan Hajnoczi | 12bd451 | 2012-01-18 14:40:46 +0000 | [diff] [blame] | 2424 | } |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 2425 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2426 | void qmp_block_commit(const char *job_id, const char *device, |
| 2427 | const char *base_node, |
| 2428 | const char *base, |
| 2429 | const char *top_node, |
| 2430 | const char *top, |
| 2431 | const char *backing_file, |
Peter Krempa | 4b028cb | 2023-12-05 18:14:41 +0100 | [diff] [blame] | 2432 | bool has_backing_mask_protocol, |
| 2433 | bool backing_mask_protocol, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2434 | bool has_speed, int64_t speed, |
Kevin Wolf | 8faad1c | 2020-02-14 21:08:11 +0100 | [diff] [blame] | 2435 | bool has_on_error, BlockdevOnError on_error, |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2436 | const char *filter_node_name, |
John Snow | 96fbf53 | 2018-09-06 09:02:21 -0400 | [diff] [blame] | 2437 | bool has_auto_finalize, bool auto_finalize, |
| 2438 | bool has_auto_dismiss, bool auto_dismiss, |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2439 | Error **errp) |
| 2440 | { |
| 2441 | BlockDriverState *bs; |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2442 | BlockDriverState *iter; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2443 | BlockDriverState *base_bs, *top_bs; |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2444 | AioContext *aio_context; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2445 | Error *local_err = NULL; |
John Snow | 5360782 | 2018-09-06 09:02:10 -0400 | [diff] [blame] | 2446 | int job_flags = JOB_DEFAULT; |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2447 | uint64_t top_perm, top_shared; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2448 | |
Kevin Wolf | bce73bc | 2023-09-11 11:46:13 +0200 | [diff] [blame] | 2449 | /* TODO We'll eventually have to take a writer lock in this function */ |
| 2450 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 2451 | |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 2452 | if (!has_speed) { |
| 2453 | speed = 0; |
| 2454 | } |
Kevin Wolf | 8faad1c | 2020-02-14 21:08:11 +0100 | [diff] [blame] | 2455 | if (!has_on_error) { |
| 2456 | on_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2457 | } |
John Snow | 96fbf53 | 2018-09-06 09:02:21 -0400 | [diff] [blame] | 2458 | if (has_auto_finalize && !auto_finalize) { |
| 2459 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2460 | } |
| 2461 | if (has_auto_dismiss && !auto_dismiss) { |
| 2462 | job_flags |= JOB_MANUAL_DISMISS; |
| 2463 | } |
Peter Krempa | 4b028cb | 2023-12-05 18:14:41 +0100 | [diff] [blame] | 2464 | if (!has_backing_mask_protocol) { |
| 2465 | backing_mask_protocol = false; |
| 2466 | } |
Max Reitz | 5450466 | 2014-04-10 19:36:25 +0200 | [diff] [blame] | 2467 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2468 | /* Important Note: |
| 2469 | * libvirt relies on the DeviceNotFound error class in order to probe for |
| 2470 | * live commit feature versions; for this to work, we must make sure to |
| 2471 | * perform the device lookup before any generic errors that may occur in a |
| 2472 | * scenario in which all optional arguments are omitted. */ |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2473 | bs = qmp_get_root_bs(device, &local_err); |
| 2474 | if (!bs) { |
| 2475 | bs = bdrv_lookup_bs(device, device, NULL); |
| 2476 | if (!bs) { |
| 2477 | error_free(local_err); |
| 2478 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
| 2479 | "Device '%s' not found", device); |
| 2480 | } else { |
| 2481 | error_propagate(errp, local_err); |
| 2482 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2483 | return; |
| 2484 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2485 | |
Kevin Wolf | 1d13b16 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2486 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2487 | |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 2488 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2489 | return; |
Fam Zheng | 628ff68 | 2014-05-23 21:29:44 +0800 | [diff] [blame] | 2490 | } |
| 2491 | |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2492 | /* default top_bs is the active layer */ |
| 2493 | top_bs = bs; |
| 2494 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2495 | if (top_node && top) { |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2496 | error_setg(errp, "'top-node' and 'top' are mutually exclusive"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2497 | return; |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2498 | } else if (top_node) { |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2499 | top_bs = bdrv_lookup_bs(NULL, top_node, errp); |
| 2500 | if (top_bs == NULL) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2501 | return; |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2502 | } |
| 2503 | if (!bdrv_chain_contains(bs, top_bs)) { |
| 2504 | error_setg(errp, "'%s' is not in this backing file chain", |
| 2505 | top_node); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2506 | return; |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2507 | } |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2508 | } else if (top) { |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 2509 | /* This strcmp() is just a shortcut, there is no need to |
| 2510 | * refresh @bs's filename. If it mismatches, |
| 2511 | * bdrv_find_backing_image() will do the refresh and may still |
| 2512 | * return @bs. */ |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2513 | if (strcmp(bs->filename, top) != 0) { |
| 2514 | top_bs = bdrv_find_backing_image(bs, top); |
| 2515 | } |
| 2516 | } |
| 2517 | |
| 2518 | if (top_bs == NULL) { |
| 2519 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2520 | return; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2521 | } |
| 2522 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2523 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
| 2524 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2525 | if (base_node && base) { |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2526 | error_setg(errp, "'base-node' and 'base' are mutually exclusive"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2527 | return; |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2528 | } else if (base_node) { |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2529 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); |
| 2530 | if (base_bs == NULL) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2531 | return; |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2532 | } |
| 2533 | if (!bdrv_chain_contains(top_bs, base_bs)) { |
| 2534 | error_setg(errp, "'%s' is not in this backing file chain", |
| 2535 | base_node); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2536 | return; |
Kevin Wolf | 3c605f4 | 2017-06-27 17:18:20 +0200 | [diff] [blame] | 2537 | } |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2538 | } else if (base) { |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2539 | base_bs = bdrv_find_backing_image(top_bs, base); |
Markus Armbruster | b0d7be2 | 2020-11-13 09:26:19 +0100 | [diff] [blame] | 2540 | if (base_bs == NULL) { |
| 2541 | error_setg(errp, "Can't find '%s' in the backing chain", base); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2542 | return; |
Markus Armbruster | b0d7be2 | 2020-11-13 09:26:19 +0100 | [diff] [blame] | 2543 | } |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2544 | } else { |
| 2545 | base_bs = bdrv_find_base(top_bs); |
Markus Armbruster | b0d7be2 | 2020-11-13 09:26:19 +0100 | [diff] [blame] | 2546 | if (base_bs == NULL) { |
| 2547 | error_setg(errp, "There is no backimg image"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2548 | return; |
Markus Armbruster | b0d7be2 | 2020-11-13 09:26:19 +0100 | [diff] [blame] | 2549 | } |
Jeff Cody | d5208c4 | 2012-10-16 15:49:10 -0400 | [diff] [blame] | 2550 | } |
| 2551 | |
Stefan Hajnoczi | 9e85cd5 | 2014-10-21 12:03:59 +0100 | [diff] [blame] | 2552 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
| 2553 | |
Max Reitz | 9a71b9d | 2019-06-12 17:47:37 +0200 | [diff] [blame] | 2554 | for (iter = top_bs; iter != bdrv_filter_or_cow_bs(base_bs); |
| 2555 | iter = bdrv_filter_or_cow_bs(iter)) |
| 2556 | { |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2557 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2558 | return; |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2559 | } |
Fam Zheng | bb00021 | 2014-09-11 13:14:00 +0800 | [diff] [blame] | 2560 | } |
| 2561 | |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2562 | /* Do not allow attempts to commit an image into itself */ |
| 2563 | if (top_bs == base_bs) { |
| 2564 | error_setg(errp, "cannot commit an image into itself"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2565 | return; |
Jeff Cody | 7676e2c | 2014-06-30 15:14:15 +0200 | [diff] [blame] | 2566 | } |
| 2567 | |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2568 | /* |
| 2569 | * Active commit is required if and only if someone has taken a |
| 2570 | * WRITE permission on the top node. Historically, we have always |
| 2571 | * used active commit for top nodes, so continue that practice |
| 2572 | * lest we possibly break clients that rely on this behavior, e.g. |
| 2573 | * to later attach this node to a writing parent. |
| 2574 | * (Active commit is never really wrong.) |
| 2575 | */ |
| 2576 | bdrv_get_cumulative_perm(top_bs, &top_perm, &top_shared); |
| 2577 | if (top_perm & BLK_PERM_WRITE || |
| 2578 | bdrv_skip_filters(top_bs) == bdrv_skip_filters(bs)) |
| 2579 | { |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2580 | if (backing_file) { |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2581 | if (bdrv_skip_filters(top_bs) == bdrv_skip_filters(bs)) { |
| 2582 | error_setg(errp, "'backing-file' specified," |
| 2583 | " but 'top' is the active layer"); |
| 2584 | } else { |
| 2585 | error_setg(errp, "'backing-file' specified, but 'top' has a " |
| 2586 | "writer on it"); |
| 2587 | } |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2588 | return; |
Jeff Cody | 54e2690 | 2014-06-25 15:40:10 -0400 | [diff] [blame] | 2589 | } |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2590 | if (!job_id) { |
Max Reitz | 05ea385 | 2019-06-11 21:19:26 +0200 | [diff] [blame] | 2591 | /* |
| 2592 | * Emulate here what block_job_create() does, because it |
| 2593 | * is possible that @bs != @top_bs (the block job should |
| 2594 | * be named after @bs, even if @top_bs is the actual |
| 2595 | * source) |
| 2596 | */ |
| 2597 | job_id = bdrv_get_device_name(bs); |
| 2598 | } |
| 2599 | 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] | 2600 | filter_node_name, NULL, NULL, false, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 2601 | } else { |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2602 | BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs); |
| 2603 | if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2604 | return; |
Alberto Garcia | 058223a | 2016-10-28 10:08:07 +0300 | [diff] [blame] | 2605 | } |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2606 | commit_start(job_id, bs, base_bs, top_bs, job_flags, |
| 2607 | speed, on_error, backing_file, |
Peter Krempa | 4b028cb | 2023-12-05 18:14:41 +0100 | [diff] [blame] | 2608 | backing_mask_protocol, |
Kevin Wolf | 0db832f | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2609 | filter_node_name, &local_err); |
Fam Zheng | 20a63d2 | 2013-12-16 14:45:31 +0800 | [diff] [blame] | 2610 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2611 | if (local_err != NULL) { |
| 2612 | error_propagate(errp, local_err); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2613 | return; |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2614 | } |
Jeff Cody | ed61fc1 | 2012-09-27 13:29:16 -0400 | [diff] [blame] | 2615 | } |
| 2616 | |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2617 | /* Common QMP interface for drive-backup and blockdev-backup */ |
| 2618 | static BlockJob *do_backup_common(BackupCommon *backup, |
| 2619 | BlockDriverState *bs, |
| 2620 | BlockDriverState *target_bs, |
| 2621 | AioContext *aio_context, |
| 2622 | JobTxn *txn, Error **errp) |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2623 | { |
John Snow | 111049a | 2016-11-08 01:50:38 -0500 | [diff] [blame] | 2624 | BlockJob *job = NULL; |
John Snow | d58d845 | 2015-04-17 19:49:58 -0400 | [diff] [blame] | 2625 | BdrvDirtyBitmap *bmap = NULL; |
Vladimir Sementsov-Ogievskiy | 6a30f66 | 2021-01-17 00:47:00 +0300 | [diff] [blame] | 2626 | BackupPerf perf = { .max_workers = 64 }; |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2627 | int job_flags = JOB_DEFAULT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2628 | |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2629 | if (!backup->has_speed) { |
| 2630 | backup->speed = 0; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2631 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2632 | if (!backup->has_on_source_error) { |
| 2633 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2634 | } |
Pavel Butsykin | 81206a8 | 2016-07-22 11:17:50 +0300 | [diff] [blame] | 2635 | if (!backup->has_on_target_error) { |
| 2636 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2637 | } |
John Snow | b40dacd | 2018-03-10 03:27:44 -0500 | [diff] [blame] | 2638 | if (!backup->has_auto_finalize) { |
| 2639 | backup->auto_finalize = true; |
| 2640 | } |
| 2641 | if (!backup->has_auto_dismiss) { |
| 2642 | backup->auto_dismiss = true; |
| 2643 | } |
Pavel Butsykin | 13b9414 | 2016-07-22 11:17:52 +0300 | [diff] [blame] | 2644 | if (!backup->has_compress) { |
| 2645 | backup->compress = false; |
| 2646 | } |
Stefan Hajnoczi | 99a9add | 2013-06-24 17:13:14 +0200 | [diff] [blame] | 2647 | |
Vladimir Sementsov-Ogievskiy | 86c6a3b | 2021-01-17 00:46:43 +0300 | [diff] [blame] | 2648 | if (backup->x_perf) { |
| 2649 | if (backup->x_perf->has_use_copy_range) { |
| 2650 | perf.use_copy_range = backup->x_perf->use_copy_range; |
| 2651 | } |
Vladimir Sementsov-Ogievskiy | 2c59fd8 | 2021-01-17 00:46:52 +0300 | [diff] [blame] | 2652 | if (backup->x_perf->has_max_workers) { |
| 2653 | perf.max_workers = backup->x_perf->max_workers; |
| 2654 | } |
| 2655 | if (backup->x_perf->has_max_chunk) { |
| 2656 | perf.max_chunk = backup->x_perf->max_chunk; |
| 2657 | } |
Fiona Ebner | 6252deb | 2024-07-11 14:09:15 +0200 | [diff] [blame] | 2658 | if (backup->x_perf->has_min_cluster_size) { |
| 2659 | perf.min_cluster_size = backup->x_perf->min_cluster_size; |
| 2660 | } |
Vladimir Sementsov-Ogievskiy | 86c6a3b | 2021-01-17 00:46:43 +0300 | [diff] [blame] | 2661 | } |
| 2662 | |
John Snow | a6c9365 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 2663 | if ((backup->sync == MIRROR_SYNC_MODE_BITMAP) || |
| 2664 | (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL)) { |
| 2665 | /* done before desugaring 'incremental' to print the right message */ |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2666 | if (!backup->bitmap) { |
John Snow | a6c9365 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 2667 | error_setg(errp, "must provide a valid bitmap name for " |
| 2668 | "'%s' sync mode", MirrorSyncMode_str(backup->sync)); |
| 2669 | return NULL; |
| 2670 | } |
| 2671 | } |
| 2672 | |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2673 | if (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL) { |
| 2674 | if (backup->has_bitmap_mode && |
| 2675 | backup->bitmap_mode != BITMAP_SYNC_MODE_ON_SUCCESS) { |
| 2676 | error_setg(errp, "Bitmap sync mode must be '%s' " |
| 2677 | "when using sync mode '%s'", |
| 2678 | BitmapSyncMode_str(BITMAP_SYNC_MODE_ON_SUCCESS), |
| 2679 | MirrorSyncMode_str(backup->sync)); |
| 2680 | return NULL; |
| 2681 | } |
| 2682 | backup->has_bitmap_mode = true; |
| 2683 | backup->sync = MIRROR_SYNC_MODE_BITMAP; |
| 2684 | backup->bitmap_mode = BITMAP_SYNC_MODE_ON_SUCCESS; |
| 2685 | } |
| 2686 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2687 | if (backup->bitmap) { |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2688 | bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap); |
| 2689 | if (!bmap) { |
| 2690 | error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap); |
| 2691 | return NULL; |
| 2692 | } |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2693 | if (!backup->has_bitmap_mode) { |
| 2694 | error_setg(errp, "Bitmap sync mode must be given " |
| 2695 | "when providing a bitmap"); |
| 2696 | return NULL; |
| 2697 | } |
John Snow | b30ffbe | 2019-07-29 16:35:54 -0400 | [diff] [blame] | 2698 | if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2699 | return NULL; |
| 2700 | } |
John Snow | 1a2b8b4 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 2701 | |
| 2702 | /* This does not produce a useful bitmap artifact: */ |
| 2703 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
| 2704 | error_setg(errp, "sync mode '%s' does not produce meaningful bitmap" |
| 2705 | " outputs", MirrorSyncMode_str(backup->sync)); |
| 2706 | return NULL; |
| 2707 | } |
| 2708 | |
| 2709 | /* If the bitmap isn't used for input or output, this is useless: */ |
| 2710 | if (backup->bitmap_mode == BITMAP_SYNC_MODE_NEVER && |
| 2711 | backup->sync != MIRROR_SYNC_MODE_BITMAP) { |
| 2712 | error_setg(errp, "Bitmap sync mode '%s' has no meaningful effect" |
| 2713 | " when combined with sync mode '%s'", |
| 2714 | BitmapSyncMode_str(backup->bitmap_mode), |
| 2715 | MirrorSyncMode_str(backup->sync)); |
| 2716 | return NULL; |
| 2717 | } |
| 2718 | } |
| 2719 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2720 | if (!backup->bitmap && backup->has_bitmap_mode) { |
John Snow | 1a2b8b4 | 2019-07-29 16:35:55 -0400 | [diff] [blame] | 2721 | error_setg(errp, "Cannot specify bitmap sync mode without a bitmap"); |
| 2722 | return NULL; |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2723 | } |
| 2724 | |
| 2725 | if (!backup->auto_finalize) { |
| 2726 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2727 | } |
| 2728 | if (!backup->auto_dismiss) { |
| 2729 | job_flags |= JOB_MANUAL_DISMISS; |
| 2730 | } |
| 2731 | |
| 2732 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2733 | backup->sync, bmap, backup->bitmap_mode, |
Vladimir Sementsov-Ogievskiy | 0fd05c8 | 2024-03-13 18:28:21 +0300 | [diff] [blame] | 2734 | backup->compress, backup->discard_source, |
Vladimir Sementsov-Ogievskiy | 00e30f0 | 2019-10-01 16:14:09 +0300 | [diff] [blame] | 2735 | backup->filter_node_name, |
Vladimir Sementsov-Ogievskiy | 86c6a3b | 2021-01-17 00:46:43 +0300 | [diff] [blame] | 2736 | &perf, |
John Snow | c8b5650 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2737 | backup->on_source_error, |
| 2738 | backup->on_target_error, |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2739 | job_flags, NULL, NULL, txn, errp); |
| 2740 | return job; |
| 2741 | } |
| 2742 | |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 2743 | void qmp_drive_backup(DriveBackup *backup, Error **errp) |
John Snow | 7b0b870 | 2019-07-29 16:35:52 -0400 | [diff] [blame] | 2744 | { |
Sergio Lopez | 2288ccf | 2020-01-08 15:31:32 +0100 | [diff] [blame] | 2745 | TransactionAction action = { |
| 2746 | .type = TRANSACTION_ACTION_KIND_DRIVE_BACKUP, |
| 2747 | .u.drive_backup.data = backup, |
| 2748 | }; |
| 2749 | blockdev_do_action(&action, errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 2750 | } |
| 2751 | |
Peter Krempa | facda54 | 2020-01-20 09:50:49 +0100 | [diff] [blame] | 2752 | BlockDeviceInfoList *qmp_query_named_block_nodes(bool has_flat, |
| 2753 | bool flat, |
| 2754 | Error **errp) |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 2755 | { |
Peter Krempa | facda54 | 2020-01-20 09:50:49 +0100 | [diff] [blame] | 2756 | bool return_flat = has_flat && flat; |
| 2757 | |
| 2758 | return bdrv_named_nodes_list(return_flat, errp); |
Benoît Canet | c13163f | 2014-01-23 21:31:34 +0100 | [diff] [blame] | 2759 | } |
| 2760 | |
Vladimir Sementsov-Ogievskiy | 5d3b4e9 | 2018-12-21 20:09:07 +0300 | [diff] [blame] | 2761 | XDbgBlockGraph *qmp_x_debug_query_block_graph(Error **errp) |
| 2762 | { |
Kevin Wolf | 15f3f1f | 2023-09-29 16:51:44 +0200 | [diff] [blame] | 2763 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 2764 | |
Vladimir Sementsov-Ogievskiy | 5d3b4e9 | 2018-12-21 20:09:07 +0300 | [diff] [blame] | 2765 | return bdrv_get_xdbg_block_graph(errp); |
| 2766 | } |
| 2767 | |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 2768 | void qmp_blockdev_backup(BlockdevBackup *backup, Error **errp) |
Fam Zheng | c29c1dd | 2014-12-18 18:37:05 +0800 | [diff] [blame] | 2769 | { |
Sergio Lopez | 5b7bfe5 | 2020-01-08 15:31:33 +0100 | [diff] [blame] | 2770 | TransactionAction action = { |
| 2771 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP, |
| 2772 | .u.blockdev_backup.data = backup, |
| 2773 | }; |
| 2774 | blockdev_do_action(&action, errp); |
John Snow | 78f51fd | 2015-11-05 18:13:17 -0500 | [diff] [blame] | 2775 | } |
| 2776 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2777 | /* Parameter check and block job starting for drive mirroring. |
| 2778 | * Caller should hold @device and @target's aio context (must be the same). |
| 2779 | **/ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 2780 | static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2781 | BlockDriverState *target, |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2782 | const char *replaces, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2783 | enum MirrorSyncMode sync, |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 2784 | BlockMirrorBackingMode backing_mode, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 2785 | bool zero_target, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2786 | bool has_speed, int64_t speed, |
| 2787 | bool has_granularity, uint32_t granularity, |
| 2788 | bool has_buf_size, int64_t buf_size, |
| 2789 | bool has_on_source_error, |
| 2790 | BlockdevOnError on_source_error, |
| 2791 | bool has_on_target_error, |
| 2792 | BlockdevOnError on_target_error, |
| 2793 | bool has_unmap, bool unmap, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2794 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 2795 | bool has_copy_mode, MirrorCopyMode copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 2796 | bool has_auto_finalize, bool auto_finalize, |
| 2797 | bool has_auto_dismiss, bool auto_dismiss, |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2798 | Error **errp) |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2799 | { |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2800 | BlockDriverState *unfiltered_bs; |
John Snow | a1999b3 | 2018-09-06 09:02:11 -0400 | [diff] [blame] | 2801 | int job_flags = JOB_DEFAULT; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2802 | |
Kevin Wolf | 533c6e4 | 2023-05-04 13:57:49 +0200 | [diff] [blame] | 2803 | GLOBAL_STATE_CODE(); |
| 2804 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 2805 | |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2806 | if (!has_speed) { |
| 2807 | speed = 0; |
| 2808 | } |
Paolo Bonzini | b952b55 | 2012-10-18 16:49:28 +0200 | [diff] [blame] | 2809 | if (!has_on_source_error) { |
| 2810 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2811 | } |
| 2812 | if (!has_on_target_error) { |
| 2813 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; |
| 2814 | } |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2815 | if (!has_granularity) { |
| 2816 | granularity = 0; |
| 2817 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 2818 | if (!has_buf_size) { |
Wen Congyang | 48ac0a4 | 2015-05-15 15:51:36 +0800 | [diff] [blame] | 2819 | buf_size = 0; |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 2820 | } |
Fam Zheng | 0fc9f8e | 2015-06-08 13:56:08 +0800 | [diff] [blame] | 2821 | if (!has_unmap) { |
| 2822 | unmap = true; |
| 2823 | } |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 2824 | if (!has_copy_mode) { |
| 2825 | copy_mode = MIRROR_COPY_MODE_BACKGROUND; |
| 2826 | } |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 2827 | if (has_auto_finalize && !auto_finalize) { |
| 2828 | job_flags |= JOB_MANUAL_FINALIZE; |
| 2829 | } |
| 2830 | if (has_auto_dismiss && !auto_dismiss) { |
| 2831 | job_flags |= JOB_MANUAL_DISMISS; |
| 2832 | } |
Paolo Bonzini | 08e4ed6 | 2013-01-22 09:03:13 +0100 | [diff] [blame] | 2833 | |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2834 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2835 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
| 2836 | "a value in range [512B, 64MB]"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2837 | return; |
| 2838 | } |
| 2839 | if (granularity & (granularity - 1)) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 2840 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
Markus Armbruster | 6cc0667 | 2020-11-13 09:26:26 +0100 | [diff] [blame] | 2841 | "a power of 2"); |
Paolo Bonzini | eee13df | 2013-01-21 17:09:46 +0100 | [diff] [blame] | 2842 | return; |
| 2843 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2844 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2845 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
| 2846 | return; |
| 2847 | } |
Fam Zheng | e40e502 | 2015-12-24 12:45:04 +0800 | [diff] [blame] | 2848 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
| 2849 | return; |
| 2850 | } |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2851 | |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2852 | if (!bdrv_backing_chain_next(bs) && sync == MIRROR_SYNC_MODE_TOP) { |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2853 | sync = MIRROR_SYNC_MODE_FULL; |
| 2854 | } |
| 2855 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2856 | if (!replaces) { |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2857 | /* We want to mirror from @bs, but keep implicit filters on top */ |
| 2858 | unfiltered_bs = bdrv_skip_implicit_filters(bs); |
| 2859 | if (unfiltered_bs != bs) { |
| 2860 | replaces = unfiltered_bs->node_name; |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2861 | } |
| 2862 | } |
| 2863 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2864 | if (replaces) { |
Max Reitz | 74ce9e4 | 2019-02-13 23:53:01 +0100 | [diff] [blame] | 2865 | BlockDriverState *to_replace_bs; |
Max Reitz | 74ce9e4 | 2019-02-13 23:53:01 +0100 | [diff] [blame] | 2866 | int64_t bs_size, replace_size; |
| 2867 | |
| 2868 | bs_size = bdrv_getlength(bs); |
| 2869 | if (bs_size < 0) { |
| 2870 | error_setg_errno(errp, -bs_size, "Failed to query device's size"); |
| 2871 | return; |
| 2872 | } |
| 2873 | |
| 2874 | to_replace_bs = check_to_replace_node(bs, replaces, errp); |
| 2875 | if (!to_replace_bs) { |
| 2876 | return; |
| 2877 | } |
| 2878 | |
Max Reitz | 74ce9e4 | 2019-02-13 23:53:01 +0100 | [diff] [blame] | 2879 | replace_size = bdrv_getlength(to_replace_bs); |
Max Reitz | 74ce9e4 | 2019-02-13 23:53:01 +0100 | [diff] [blame] | 2880 | |
| 2881 | if (replace_size < 0) { |
| 2882 | error_setg_errno(errp, -replace_size, |
| 2883 | "Failed to query the replacement node's size"); |
| 2884 | return; |
| 2885 | } |
| 2886 | if (bs_size != replace_size) { |
| 2887 | error_setg(errp, "cannot replace image with a mirror image of " |
| 2888 | "different size"); |
| 2889 | return; |
| 2890 | } |
| 2891 | } |
| 2892 | |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2893 | /* pass the node name to replace to mirror start since it's loose coupling |
| 2894 | * and will allow to check whether the node still exist at mirror completion |
| 2895 | */ |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 2896 | mirror_start(job_id, bs, target, |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2897 | replaces, job_flags, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 2898 | speed, granularity, buf_size, sync, backing_mode, zero_target, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 2899 | on_source_error, on_target_error, unmap, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 2900 | copy_mode, errp); |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2901 | } |
| 2902 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2903 | void qmp_drive_mirror(DriveMirror *arg, Error **errp) |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2904 | { |
| 2905 | BlockDriverState *bs; |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2906 | BlockDriverState *target_backing_bs, *target_bs; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2907 | AioContext *aio_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 2908 | BlockMirrorBackingMode backing_mode; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2909 | Error *local_err = NULL; |
| 2910 | QDict *options = NULL; |
| 2911 | int flags; |
| 2912 | int64_t size; |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2913 | const char *format = arg->format; |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 2914 | bool zero_target; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 2915 | int ret; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2916 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2917 | bs = qmp_get_root_bs(arg->device, errp); |
| 2918 | if (!bs) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2919 | return; |
| 2920 | } |
| 2921 | |
Paolo Bonzini | cb2af91 | 2018-02-07 17:29:20 +0100 | [diff] [blame] | 2922 | /* Early check to avoid creating target */ |
Kevin Wolf | 277f200 | 2023-09-29 16:51:52 +0200 | [diff] [blame] | 2923 | bdrv_graph_rdlock_main_loop(); |
Paolo Bonzini | cb2af91 | 2018-02-07 17:29:20 +0100 | [diff] [blame] | 2924 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
Kevin Wolf | 277f200 | 2023-09-29 16:51:52 +0200 | [diff] [blame] | 2925 | bdrv_graph_rdunlock_main_loop(); |
Paolo Bonzini | cb2af91 | 2018-02-07 17:29:20 +0100 | [diff] [blame] | 2926 | return; |
| 2927 | } |
| 2928 | |
Kevin Wolf | 0524e93 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 2929 | aio_context = bdrv_get_aio_context(bs); |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 2930 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2931 | if (!arg->has_mode) { |
| 2932 | arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
Fam Zheng | 4193cdd | 2015-12-24 12:45:03 +0800 | [diff] [blame] | 2933 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2934 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2935 | if (!arg->format) { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2936 | format = (arg->mode == NEW_IMAGE_MODE_EXISTING |
| 2937 | ? NULL : bs->drv->format_name); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2938 | } |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2939 | |
Kevin Wolf | 61de4c6 | 2016-03-18 17:46:45 +0100 | [diff] [blame] | 2940 | flags = bs->open_flags | BDRV_O_RDWR; |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2941 | target_backing_bs = bdrv_cow_bs(bdrv_skip_filters(bs)); |
| 2942 | if (!target_backing_bs && arg->sync == MIRROR_SYNC_MODE_TOP) { |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2943 | arg->sync = MIRROR_SYNC_MODE_FULL; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2944 | } |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2945 | if (arg->sync == MIRROR_SYNC_MODE_NONE) { |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2946 | target_backing_bs = bs; |
Max Reitz | 117e0c8 | 2013-11-25 20:28:55 +0100 | [diff] [blame] | 2947 | } |
Kevin Wolf | ad74751 | 2023-10-27 17:53:17 +0200 | [diff] [blame] | 2948 | bdrv_graph_rdunlock_main_loop(); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2949 | |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 2950 | size = bdrv_getlength(bs); |
| 2951 | if (size < 0) { |
| 2952 | error_setg_errno(errp, -size, "bdrv_getlength failed"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2953 | return; |
Stefan Hajnoczi | ac3c5d8 | 2013-06-24 17:13:13 +0200 | [diff] [blame] | 2954 | } |
| 2955 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 2956 | if (arg->replaces) { |
| 2957 | if (!arg->node_name) { |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 2958 | error_setg(errp, "a node-name must be provided when replacing a" |
| 2959 | " named node of the graph"); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 2960 | return; |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 2961 | } |
Benoît Canet | 09158f0 | 2014-06-27 18:25:25 +0200 | [diff] [blame] | 2962 | } |
| 2963 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2964 | if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) { |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 2965 | backing_mode = MIRROR_SOURCE_BACKING_CHAIN; |
| 2966 | } else { |
| 2967 | backing_mode = MIRROR_OPEN_BACKING_CHAIN; |
| 2968 | } |
| 2969 | |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 2970 | /* Don't open backing image in create() */ |
| 2971 | flags |= BDRV_O_NO_BACKING; |
| 2972 | |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2973 | if ((arg->sync == MIRROR_SYNC_MODE_FULL || !target_backing_bs) |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2974 | && arg->mode != NEW_IMAGE_MODE_EXISTING) |
Max Reitz | 1452686 | 2013-11-06 19:50:44 +0100 | [diff] [blame] | 2975 | { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2976 | /* create new image w/o backing file */ |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 2977 | assert(format); |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2978 | bdrv_img_create(arg->target, format, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 2979 | NULL, NULL, NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2980 | } else { |
Kevin Wolf | 430da83 | 2023-10-27 17:53:16 +0200 | [diff] [blame] | 2981 | BlockDriverState *explicit_backing; |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2982 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2983 | switch (arg->mode) { |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2984 | case NEW_IMAGE_MODE_EXISTING: |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 2985 | break; |
| 2986 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: |
Kevin Wolf | 430da83 | 2023-10-27 17:53:16 +0200 | [diff] [blame] | 2987 | /* |
| 2988 | * Create new image with backing file. |
| 2989 | * Implicit filters should not appear in the filename. |
| 2990 | */ |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 2991 | bdrv_graph_rdlock_main_loop(); |
Kevin Wolf | 430da83 | 2023-10-27 17:53:16 +0200 | [diff] [blame] | 2992 | explicit_backing = bdrv_skip_implicit_filters(target_backing_bs); |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2993 | bdrv_refresh_filename(explicit_backing); |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 2994 | bdrv_graph_rdunlock_main_loop(); |
| 2995 | |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 2996 | bdrv_img_create(arg->target, format, |
Max Reitz | 3f072a7 | 2019-06-12 16:27:32 +0200 | [diff] [blame] | 2997 | explicit_backing->filename, |
| 2998 | explicit_backing->drv->format_name, |
Fam Zheng | 9217283 | 2017-04-21 20:27:01 +0800 | [diff] [blame] | 2999 | NULL, size, flags, false, &local_err); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3000 | break; |
| 3001 | default: |
| 3002 | abort(); |
| 3003 | } |
| 3004 | } |
| 3005 | |
Markus Armbruster | 84d18f0 | 2014-01-30 15:07:28 +0100 | [diff] [blame] | 3006 | if (local_err) { |
Luiz Capitulino | cf8f242 | 2012-11-30 10:52:08 -0200 | [diff] [blame] | 3007 | error_propagate(errp, local_err); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 3008 | return; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3009 | } |
| 3010 | |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3011 | options = qdict_new(); |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3012 | if (arg->node_name) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3013 | qdict_put_str(options, "node-name", arg->node_name); |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3014 | } |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3015 | if (format) { |
Eric Blake | 46f5ac2 | 2017-04-27 16:58:17 -0500 | [diff] [blame] | 3016 | qdict_put_str(options, "driver", format); |
Max Reitz | e664171 | 2015-08-26 19:47:48 +0200 | [diff] [blame] | 3017 | } |
Benoît Canet | 4c828dc | 2014-06-16 12:00:55 +0200 | [diff] [blame] | 3018 | |
Paolo Bonzini | b812f67 | 2013-01-21 17:09:43 +0100 | [diff] [blame] | 3019 | /* Mirroring takes care of copy-on-write using the source's backing |
| 3020 | * file. |
| 3021 | */ |
John Snow | 2a32c6e | 2017-07-17 20:34:21 -0400 | [diff] [blame] | 3022 | target_bs = bdrv_open(arg->target, NULL, options, flags, errp); |
Max Reitz | 5b36393 | 2016-05-17 16:41:31 +0200 | [diff] [blame] | 3023 | if (!target_bs) { |
Kevin Wolf | c6e0a6d | 2023-05-25 14:47:04 +0200 | [diff] [blame] | 3024 | return; |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3025 | } |
| 3026 | |
Kevin Wolf | 0671798 | 2023-10-27 17:53:11 +0200 | [diff] [blame] | 3027 | bdrv_graph_rdlock_main_loop(); |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3028 | zero_target = (arg->sync == MIRROR_SYNC_MODE_FULL && |
| 3029 | (arg->mode == NEW_IMAGE_MODE_EXISTING || |
| 3030 | !bdrv_has_zero_init(target_bs))); |
Kevin Wolf | 0671798 | 2023-10-27 17:53:11 +0200 | [diff] [blame] | 3031 | bdrv_graph_rdunlock_main_loop(); |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3032 | |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3033 | |
Emanuele Giuseppe Esposito | 142e690 | 2022-10-25 04:49:52 -0400 | [diff] [blame] | 3034 | ret = bdrv_try_change_aio_context(target_bs, aio_context, NULL, errp); |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3035 | if (ret < 0) { |
| 3036 | bdrv_unref(target_bs); |
Sergio Lopez | 3ea67e0 | 2020-01-08 15:31:34 +0100 | [diff] [blame] | 3037 | return; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3038 | } |
Stefan Hajnoczi | 5a7e7a0 | 2014-10-21 12:03:58 +0100 | [diff] [blame] | 3039 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3040 | blockdev_mirror_common(arg->job_id, bs, target_bs, |
| 3041 | arg->replaces, arg->sync, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3042 | backing_mode, zero_target, |
| 3043 | arg->has_speed, arg->speed, |
Eric Blake | faecd40 | 2016-07-14 16:37:58 -0600 | [diff] [blame] | 3044 | arg->has_granularity, arg->granularity, |
| 3045 | arg->has_buf_size, arg->buf_size, |
| 3046 | arg->has_on_source_error, arg->on_source_error, |
| 3047 | arg->has_on_target_error, arg->on_target_error, |
| 3048 | arg->has_unmap, arg->unmap, |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3049 | NULL, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3050 | arg->has_copy_mode, arg->copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3051 | arg->has_auto_finalize, arg->auto_finalize, |
| 3052 | arg->has_auto_dismiss, arg->auto_dismiss, |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 3053 | errp); |
Kevin Wolf | e253f4b | 2016-04-12 16:17:41 +0200 | [diff] [blame] | 3054 | bdrv_unref(target_bs); |
Paolo Bonzini | d9b902d | 2012-10-18 16:49:24 +0200 | [diff] [blame] | 3055 | } |
| 3056 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3057 | void qmp_blockdev_mirror(const char *job_id, |
Alberto Garcia | 71aa986 | 2016-07-05 17:28:57 +0300 | [diff] [blame] | 3058 | const char *device, const char *target, |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3059 | const char *replaces, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3060 | MirrorSyncMode sync, |
| 3061 | bool has_speed, int64_t speed, |
| 3062 | bool has_granularity, uint32_t granularity, |
| 3063 | bool has_buf_size, int64_t buf_size, |
| 3064 | bool has_on_source_error, |
| 3065 | BlockdevOnError on_source_error, |
| 3066 | bool has_on_target_error, |
| 3067 | BlockdevOnError on_target_error, |
Kevin Wolf | 6cdbceb | 2017-02-20 18:10:05 +0100 | [diff] [blame] | 3068 | const char *filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3069 | bool has_copy_mode, MirrorCopyMode copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3070 | bool has_auto_finalize, bool auto_finalize, |
| 3071 | bool has_auto_dismiss, bool auto_dismiss, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3072 | Error **errp) |
| 3073 | { |
| 3074 | BlockDriverState *bs; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3075 | BlockDriverState *target_bs; |
| 3076 | AioContext *aio_context; |
Max Reitz | 274fcce | 2016-06-10 20:57:47 +0200 | [diff] [blame] | 3077 | BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3078 | bool zero_target; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3079 | int ret; |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3080 | |
Kevin Wolf | 07eec65 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3081 | bs = qmp_get_root_bs(device, errp); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3082 | if (!bs) { |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3083 | return; |
| 3084 | } |
| 3085 | |
| 3086 | target_bs = bdrv_lookup_bs(target, target, errp); |
| 3087 | if (!target_bs) { |
| 3088 | return; |
| 3089 | } |
| 3090 | |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3091 | zero_target = (sync == MIRROR_SYNC_MODE_FULL); |
| 3092 | |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3093 | aio_context = bdrv_get_aio_context(bs); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3094 | |
Emanuele Giuseppe Esposito | 142e690 | 2022-10-25 04:49:52 -0400 | [diff] [blame] | 3095 | ret = bdrv_try_change_aio_context(target_bs, aio_context, NULL, errp); |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3096 | if (ret < 0) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 3097 | return; |
Kevin Wolf | 8ed7d42 | 2019-04-26 16:12:27 +0200 | [diff] [blame] | 3098 | } |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3099 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3100 | blockdev_mirror_common(job_id, bs, target_bs, |
| 3101 | replaces, sync, backing_mode, |
Max Reitz | cdf3bc9 | 2019-07-24 19:12:30 +0200 | [diff] [blame] | 3102 | zero_target, has_speed, speed, |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3103 | has_granularity, granularity, |
| 3104 | has_buf_size, buf_size, |
| 3105 | has_on_source_error, on_source_error, |
| 3106 | has_on_target_error, on_target_error, |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3107 | true, true, filter_node_name, |
Max Reitz | 481deba | 2018-06-13 20:18:22 +0200 | [diff] [blame] | 3108 | has_copy_mode, copy_mode, |
John Snow | a6b58ad | 2018-09-06 09:02:22 -0400 | [diff] [blame] | 3109 | has_auto_finalize, auto_finalize, |
| 3110 | has_auto_dismiss, auto_dismiss, |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 3111 | errp); |
Fam Zheng | df92562 | 2015-12-24 12:45:05 +0800 | [diff] [blame] | 3112 | } |
| 3113 | |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3114 | /* |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3115 | * Get a block job using its ID. Called with job_mutex held. |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3116 | */ |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3117 | static BlockJob *find_block_job_locked(const char *id, Error **errp) |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3118 | { |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3119 | BlockJob *job; |
| 3120 | |
| 3121 | assert(id != NULL); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3122 | |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3123 | job = block_job_get_locked(id); |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3124 | |
| 3125 | if (!job) { |
| 3126 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
| 3127 | "Block job '%s' not found", id); |
| 3128 | return NULL; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3129 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3130 | |
Alberto Garcia | 3ddf3ef | 2016-07-05 17:28:55 +0300 | [diff] [blame] | 3131 | return job; |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3132 | } |
| 3133 | |
Stefan Hajnoczi | 882ec7c | 2012-04-25 16:51:02 +0100 | [diff] [blame] | 3134 | 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] | 3135 | { |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3136 | BlockJob *job; |
| 3137 | |
| 3138 | JOB_LOCK_GUARD(); |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3139 | job = find_block_job_locked(device, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3140 | |
| 3141 | if (!job) { |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3142 | return; |
| 3143 | } |
| 3144 | |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3145 | block_job_set_speed_locked(job, speed, errp); |
Stefan Hajnoczi | 2d47c6e | 2012-01-18 14:40:47 +0000 | [diff] [blame] | 3146 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3147 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3148 | void qmp_block_job_cancel(const char *device, |
| 3149 | bool has_force, bool force, Error **errp) |
| 3150 | { |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3151 | BlockJob *job; |
| 3152 | |
| 3153 | JOB_LOCK_GUARD(); |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3154 | job = find_block_job_locked(device, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3155 | |
| 3156 | if (!job) { |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3157 | return; |
| 3158 | } |
Stefan Hajnoczi | 3d948cd | 2014-10-21 12:03:50 +0100 | [diff] [blame] | 3159 | |
| 3160 | if (!has_force) { |
| 3161 | force = false; |
| 3162 | } |
| 3163 | |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3164 | if (job_user_paused_locked(&job->job) && !force) { |
Cole Robinson | f231b88 | 2014-03-21 19:42:26 -0400 | [diff] [blame] | 3165 | error_setg(errp, "The block job for device '%s' is currently paused", |
| 3166 | device); |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3167 | return; |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3168 | } |
| 3169 | |
| 3170 | trace_qmp_block_job_cancel(job); |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3171 | job_user_cancel_locked(&job->job, force, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3172 | } |
| 3173 | |
| 3174 | void qmp_block_job_pause(const char *device, Error **errp) |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3175 | { |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3176 | BlockJob *job; |
| 3177 | |
| 3178 | JOB_LOCK_GUARD(); |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3179 | job = find_block_job_locked(device, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3180 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3181 | if (!job) { |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3182 | return; |
| 3183 | } |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3184 | |
| 3185 | trace_qmp_block_job_pause(job); |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3186 | job_user_pause_locked(&job->job, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3187 | } |
| 3188 | |
| 3189 | void qmp_block_job_resume(const char *device, Error **errp) |
| 3190 | { |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3191 | BlockJob *job; |
| 3192 | |
| 3193 | JOB_LOCK_GUARD(); |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3194 | job = find_block_job_locked(device, errp); |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3195 | |
John Snow | 0ec4dfb | 2018-03-10 03:27:32 -0500 | [diff] [blame] | 3196 | if (!job) { |
Paolo Bonzini | 8acc72a | 2012-09-28 17:22:50 +0200 | [diff] [blame] | 3197 | return; |
| 3198 | } |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3199 | |
Paolo Bonzini | 6e37fb8 | 2012-09-28 17:22:51 +0200 | [diff] [blame] | 3200 | trace_qmp_block_job_resume(job); |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3201 | job_user_resume_locked(&job->job, errp); |
Stefan Hajnoczi | 370521a | 2012-01-18 14:40:48 +0000 | [diff] [blame] | 3202 | } |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3203 | |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3204 | void qmp_block_job_complete(const char *device, Error **errp) |
| 3205 | { |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3206 | BlockJob *job; |
| 3207 | |
| 3208 | JOB_LOCK_GUARD(); |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3209 | job = find_block_job_locked(device, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3210 | |
| 3211 | if (!job) { |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3212 | return; |
| 3213 | } |
| 3214 | |
| 3215 | trace_qmp_block_job_complete(job); |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3216 | job_complete_locked(&job->job, errp); |
Paolo Bonzini | aeae883 | 2012-10-18 16:49:21 +0200 | [diff] [blame] | 3217 | } |
| 3218 | |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3219 | void qmp_block_job_finalize(const char *id, Error **errp) |
| 3220 | { |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3221 | BlockJob *job; |
| 3222 | |
| 3223 | JOB_LOCK_GUARD(); |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3224 | job = find_block_job_locked(id, errp); |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3225 | |
| 3226 | if (!job) { |
| 3227 | return; |
| 3228 | } |
| 3229 | |
| 3230 | trace_qmp_block_job_finalize(job); |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3231 | job_ref_locked(&job->job); |
| 3232 | job_finalize_locked(&job->job, errp); |
Stefan Reiter | b660a84 | 2020-04-07 13:56:49 +0200 | [diff] [blame] | 3233 | |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3234 | job_unref_locked(&job->job); |
John Snow | 11b61fb | 2018-03-10 03:27:43 -0500 | [diff] [blame] | 3235 | } |
| 3236 | |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3237 | void qmp_block_job_dismiss(const char *id, Error **errp) |
| 3238 | { |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3239 | BlockJob *bjob; |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3240 | Job *job; |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3241 | |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3242 | JOB_LOCK_GUARD(); |
Emanuele Giuseppe Esposito | 6f592e5 | 2022-09-26 05:32:11 -0400 | [diff] [blame] | 3243 | bjob = find_block_job_locked(id, errp); |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3244 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3245 | if (!bjob) { |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3246 | return; |
| 3247 | } |
| 3248 | |
Kevin Wolf | 5f9a6a0 | 2018-04-24 17:10:12 +0200 | [diff] [blame] | 3249 | trace_qmp_block_job_dismiss(bjob); |
| 3250 | job = &bjob->job; |
Emanuele Giuseppe Esposito | 9624112 | 2022-09-26 05:32:01 -0400 | [diff] [blame] | 3251 | job_dismiss_locked(&job, errp); |
John Snow | 75f7105 | 2018-03-10 03:27:36 -0500 | [diff] [blame] | 3252 | } |
| 3253 | |
Fiona Ebner | 61a3a5a | 2023-10-31 14:54:22 +0100 | [diff] [blame] | 3254 | void qmp_block_job_change(BlockJobChangeOptions *opts, Error **errp) |
| 3255 | { |
| 3256 | BlockJob *job; |
| 3257 | |
| 3258 | JOB_LOCK_GUARD(); |
| 3259 | job = find_block_job_locked(opts->id, errp); |
| 3260 | |
| 3261 | if (!job) { |
| 3262 | return; |
| 3263 | } |
| 3264 | |
| 3265 | block_job_change_locked(job, opts, errp); |
| 3266 | } |
| 3267 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3268 | void qmp_change_backing_file(const char *device, |
| 3269 | const char *image_node_name, |
| 3270 | const char *backing_file, |
| 3271 | Error **errp) |
| 3272 | { |
| 3273 | BlockDriverState *bs = NULL; |
| 3274 | BlockDriverState *image_bs = NULL; |
| 3275 | Error *local_err = NULL; |
| 3276 | bool ro; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3277 | int ret; |
| 3278 | |
Kevin Wolf | 7b5dca3 | 2016-06-23 14:20:24 +0200 | [diff] [blame] | 3279 | bs = qmp_get_root_bs(device, errp); |
| 3280 | if (!bs) { |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3281 | return; |
| 3282 | } |
| 3283 | |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 3284 | bdrv_graph_rdlock_main_loop(); |
| 3285 | |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3286 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
| 3287 | if (local_err) { |
| 3288 | error_propagate(errp, local_err); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 3289 | goto out_rdlock; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3290 | } |
| 3291 | |
| 3292 | if (!image_bs) { |
| 3293 | error_setg(errp, "image file not found"); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 3294 | goto out_rdlock; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3295 | } |
| 3296 | |
| 3297 | if (bdrv_find_base(image_bs) == image_bs) { |
| 3298 | error_setg(errp, "not allowing backing file change on an image " |
| 3299 | "without a backing file"); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 3300 | goto out_rdlock; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3301 | } |
| 3302 | |
| 3303 | /* even though we are not necessarily operating on bs, we need it to |
| 3304 | * determine if block ops are currently prohibited on the chain */ |
| 3305 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 3306 | goto out_rdlock; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3307 | } |
| 3308 | |
| 3309 | /* final sanity check */ |
| 3310 | if (!bdrv_chain_contains(bs, image_bs)) { |
| 3311 | error_setg(errp, "'%s' and image file are not in the same chain", |
| 3312 | device); |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 3313 | goto out_rdlock; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3314 | } |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 3315 | bdrv_graph_rdunlock_main_loop(); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3316 | |
| 3317 | /* if not r/w, reopen to make r/w */ |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3318 | ro = bdrv_is_read_only(image_bs); |
| 3319 | |
| 3320 | if (ro) { |
Alberto Garcia | 051a60f | 2018-11-12 16:00:38 +0200 | [diff] [blame] | 3321 | if (bdrv_reopen_set_read_only(image_bs, false, errp) != 0) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 3322 | return; |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3323 | } |
| 3324 | } |
| 3325 | |
| 3326 | ret = bdrv_change_backing_file(image_bs, backing_file, |
Eric Blake | e54ee1b | 2020-07-06 15:39:53 -0500 | [diff] [blame] | 3327 | image_bs->drv ? image_bs->drv->format_name : "", |
| 3328 | false); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3329 | |
| 3330 | if (ret < 0) { |
| 3331 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", |
| 3332 | backing_file); |
| 3333 | /* don't exit here, so we can try to restore open flags if |
| 3334 | * appropriate */ |
| 3335 | } |
| 3336 | |
| 3337 | if (ro) { |
Markus Armbruster | 992861f | 2020-07-07 18:06:04 +0200 | [diff] [blame] | 3338 | bdrv_reopen_set_read_only(image_bs, true, errp); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3339 | } |
Kevin Wolf | 79bb762 | 2023-10-27 17:53:19 +0200 | [diff] [blame] | 3340 | return; |
| 3341 | |
| 3342 | out_rdlock: |
| 3343 | bdrv_graph_rdunlock_main_loop(); |
Jeff Cody | fa40e65 | 2014-07-01 09:52:16 +0200 | [diff] [blame] | 3344 | } |
| 3345 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3346 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
| 3347 | { |
Max Reitz | be4b67b | 2015-10-19 17:53:09 +0200 | [diff] [blame] | 3348 | BlockDriverState *bs; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3349 | QObject *obj; |
Daniel P. Berrange | 7d5e199 | 2016-09-30 15:45:28 +0100 | [diff] [blame] | 3350 | Visitor *v = qobject_output_visitor_new(&obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3351 | QDict *qdict; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3352 | |
Markus Armbruster | 1f58424 | 2020-04-24 10:43:35 +0200 | [diff] [blame] | 3353 | visit_type_BlockdevOptions(v, NULL, &options, &error_abort); |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 3354 | visit_complete(v, &obj); |
Max Reitz | 7dc847e | 2018-02-24 16:40:29 +0100 | [diff] [blame] | 3355 | qdict = qobject_to(QDict, obj); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3356 | |
| 3357 | qdict_flatten(qdict); |
| 3358 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3359 | if (!qdict_get_try_str(qdict, "node-name")) { |
| 3360 | error_setg(errp, "'node-name' must be specified for the root node"); |
| 3361 | goto fail; |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3362 | } |
| 3363 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3364 | bs = bds_tree_init(qdict, errp); |
| 3365 | if (!bs) { |
| 3366 | goto fail; |
| 3367 | } |
| 3368 | |
Maxim Levitsky | 89802d5 | 2020-03-08 11:24:40 +0200 | [diff] [blame] | 3369 | bdrv_set_monitor_owned(bs); |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3370 | |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3371 | fail: |
Eric Blake | 3b098d5 | 2016-06-09 10:48:43 -0600 | [diff] [blame] | 3372 | visit_free(v); |
Kevin Wolf | d26c9a1 | 2013-09-23 15:26:03 +0200 | [diff] [blame] | 3373 | } |
| 3374 | |
Alberto Garcia | e60edf6 | 2021-07-08 13:47:09 +0200 | [diff] [blame] | 3375 | void qmp_blockdev_reopen(BlockdevOptionsList *reopen_list, Error **errp) |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3376 | { |
Alberto Garcia | 3908b7a | 2021-07-08 13:47:07 +0200 | [diff] [blame] | 3377 | BlockReopenQueue *queue = NULL; |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3378 | |
Alberto Garcia | 3908b7a | 2021-07-08 13:47:07 +0200 | [diff] [blame] | 3379 | /* Add each one of the BDS that we want to reopen to the queue */ |
| 3380 | for (; reopen_list != NULL; reopen_list = reopen_list->next) { |
| 3381 | BlockdevOptions *options = reopen_list->value; |
| 3382 | BlockDriverState *bs; |
Alberto Garcia | 3908b7a | 2021-07-08 13:47:07 +0200 | [diff] [blame] | 3383 | QObject *obj; |
| 3384 | Visitor *v; |
| 3385 | QDict *qdict; |
| 3386 | |
| 3387 | /* Check for the selected node name */ |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3388 | if (!options->node_name) { |
Alberto Garcia | 3908b7a | 2021-07-08 13:47:07 +0200 | [diff] [blame] | 3389 | error_setg(errp, "node-name not specified"); |
| 3390 | goto fail; |
| 3391 | } |
| 3392 | |
| 3393 | bs = bdrv_find_node(options->node_name); |
| 3394 | if (!bs) { |
| 3395 | error_setg(errp, "Failed to find node with node-name='%s'", |
| 3396 | options->node_name); |
| 3397 | goto fail; |
| 3398 | } |
| 3399 | |
| 3400 | /* Put all options in a QDict and flatten it */ |
| 3401 | v = qobject_output_visitor_new(&obj); |
| 3402 | visit_type_BlockdevOptions(v, NULL, &options, &error_abort); |
| 3403 | visit_complete(v, &obj); |
| 3404 | visit_free(v); |
| 3405 | |
| 3406 | qdict = qobject_to(QDict, obj); |
| 3407 | |
| 3408 | qdict_flatten(qdict); |
| 3409 | |
Alberto Garcia | 3908b7a | 2021-07-08 13:47:07 +0200 | [diff] [blame] | 3410 | queue = bdrv_reopen_queue(queue, bs, qdict, false); |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3411 | } |
| 3412 | |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3413 | /* Perform the reopen operation */ |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3414 | bdrv_reopen_multiple(queue, errp); |
Alberto Garcia | 3908b7a | 2021-07-08 13:47:07 +0200 | [diff] [blame] | 3415 | queue = NULL; |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3416 | |
| 3417 | fail: |
Alberto Garcia | 3908b7a | 2021-07-08 13:47:07 +0200 | [diff] [blame] | 3418 | bdrv_reopen_queue_free(queue); |
Alberto Garcia | 1479c73 | 2019-03-12 18:48:51 +0200 | [diff] [blame] | 3419 | } |
| 3420 | |
Markus Armbruster | 79b7a77 | 2017-03-21 17:53:28 +0100 | [diff] [blame] | 3421 | void qmp_blockdev_del(const char *node_name, Error **errp) |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3422 | { |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3423 | BlockDriverState *bs; |
| 3424 | |
Emanuele Giuseppe Esposito | b4ad82a | 2022-03-03 10:15:57 -0500 | [diff] [blame] | 3425 | GLOBAL_STATE_CODE(); |
Kevin Wolf | 2b3912f | 2023-09-29 16:51:39 +0200 | [diff] [blame] | 3426 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
Emanuele Giuseppe Esposito | b4ad82a | 2022-03-03 10:15:57 -0500 | [diff] [blame] | 3427 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3428 | bs = bdrv_find_node(node_name); |
| 3429 | if (!bs) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 3430 | 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] | 3431 | return; |
| 3432 | } |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3433 | if (bdrv_has_blk(bs)) { |
| 3434 | error_setg(errp, "Node %s is in use", node_name); |
| 3435 | return; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3436 | } |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3437 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3438 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 3439 | return; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3440 | } |
| 3441 | |
Paolo Bonzini | 70537ed | 2018-12-06 23:00:09 +0100 | [diff] [blame] | 3442 | if (!QTAILQ_IN_USE(bs, monitor_list)) { |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3443 | error_setg(errp, "Node %s is not owned by the monitor", |
| 3444 | bs->node_name); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 3445 | return; |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3446 | } |
| 3447 | |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3448 | if (bs->refcnt > 1) { |
| 3449 | error_setg(errp, "Block device %s is in use", |
| 3450 | bdrv_get_device_or_node_name(bs)); |
Stefan Hajnoczi | b49f475 | 2023-12-05 13:20:03 -0500 | [diff] [blame] | 3451 | return; |
Kevin Wolf | 9ec8873 | 2016-09-21 14:56:11 +0200 | [diff] [blame] | 3452 | } |
| 3453 | |
| 3454 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
| 3455 | bdrv_unref(bs); |
Alberto Garcia | 81b936a | 2015-11-02 16:51:55 +0200 | [diff] [blame] | 3456 | } |
| 3457 | |
Kevin Wolf | 9def608 | 2023-09-11 11:46:20 +0200 | [diff] [blame] | 3458 | static BdrvChild * GRAPH_RDLOCK |
| 3459 | bdrv_find_child(BlockDriverState *parent_bs, const char *child_name) |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3460 | { |
| 3461 | BdrvChild *child; |
| 3462 | |
| 3463 | QLIST_FOREACH(child, &parent_bs->children, next) { |
| 3464 | if (strcmp(child->name, child_name) == 0) { |
| 3465 | return child; |
| 3466 | } |
| 3467 | } |
| 3468 | |
| 3469 | return NULL; |
| 3470 | } |
| 3471 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3472 | void qmp_x_blockdev_change(const char *parent, const char *child, |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3473 | const char *node, Error **errp) |
| 3474 | { |
| 3475 | BlockDriverState *parent_bs, *new_bs = NULL; |
| 3476 | BdrvChild *p_child; |
| 3477 | |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 3478 | bdrv_graph_wrlock(); |
Kevin Wolf | 9def608 | 2023-09-11 11:46:20 +0200 | [diff] [blame] | 3479 | |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3480 | parent_bs = bdrv_lookup_bs(parent, parent, errp); |
| 3481 | if (!parent_bs) { |
Kevin Wolf | 9def608 | 2023-09-11 11:46:20 +0200 | [diff] [blame] | 3482 | goto out; |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3483 | } |
| 3484 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3485 | if (!child == !node) { |
| 3486 | if (child) { |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3487 | error_setg(errp, "The parameters child and node are in conflict"); |
| 3488 | } else { |
| 3489 | error_setg(errp, "Either child or node must be specified"); |
| 3490 | } |
Kevin Wolf | 9def608 | 2023-09-11 11:46:20 +0200 | [diff] [blame] | 3491 | goto out; |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3492 | } |
| 3493 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3494 | if (child) { |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3495 | p_child = bdrv_find_child(parent_bs, child); |
| 3496 | if (!p_child) { |
| 3497 | error_setg(errp, "Node '%s' does not have child '%s'", |
| 3498 | parent, child); |
Kevin Wolf | 9def608 | 2023-09-11 11:46:20 +0200 | [diff] [blame] | 3499 | goto out; |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3500 | } |
| 3501 | bdrv_del_child(parent_bs, p_child, errp); |
| 3502 | } |
| 3503 | |
Markus Armbruster | 54fde4f | 2022-11-04 17:06:52 +0100 | [diff] [blame] | 3504 | if (node) { |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3505 | new_bs = bdrv_find_node(node); |
| 3506 | if (!new_bs) { |
| 3507 | error_setg(errp, "Node '%s' not found", node); |
Kevin Wolf | 9def608 | 2023-09-11 11:46:20 +0200 | [diff] [blame] | 3508 | goto out; |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3509 | } |
| 3510 | bdrv_add_child(parent_bs, new_bs, errp); |
| 3511 | } |
Kevin Wolf | 9def608 | 2023-09-11 11:46:20 +0200 | [diff] [blame] | 3512 | |
| 3513 | out: |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 3514 | bdrv_graph_wrunlock(); |
Wen Congyang | 7f82159 | 2016-05-10 15:36:39 +0800 | [diff] [blame] | 3515 | } |
| 3516 | |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3517 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
| 3518 | { |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3519 | BlockJobInfoList *head = NULL, **tail = &head; |
Alberto Garcia | f0f55de | 2016-05-27 12:53:37 +0200 | [diff] [blame] | 3520 | BlockJob *job; |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3521 | |
Emanuele Giuseppe Esposito | 880eeec | 2022-09-26 05:32:04 -0400 | [diff] [blame] | 3522 | JOB_LOCK_GUARD(); |
| 3523 | |
| 3524 | for (job = block_job_next_locked(NULL); job; |
| 3525 | job = block_job_next_locked(job)) { |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3526 | BlockJobInfo *value; |
Stefan Hajnoczi | 69691e7 | 2014-10-21 12:03:51 +0100 | [diff] [blame] | 3527 | |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3528 | if (block_job_is_internal(job)) { |
| 3529 | continue; |
| 3530 | } |
Emanuele Giuseppe Esposito | 880eeec | 2022-09-26 05:32:04 -0400 | [diff] [blame] | 3531 | value = block_job_query_locked(job, errp); |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3532 | if (!value) { |
John Snow | 559b935 | 2016-10-27 12:06:55 -0400 | [diff] [blame] | 3533 | qapi_free_BlockJobInfoList(head); |
| 3534 | return NULL; |
| 3535 | } |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3536 | QAPI_LIST_APPEND(tail, value); |
Markus Armbruster | fea68bb | 2014-10-07 13:59:10 +0200 | [diff] [blame] | 3537 | } |
| 3538 | |
| 3539 | return head; |
Stefan Hajnoczi | fb5458c | 2012-01-18 14:40:49 +0000 | [diff] [blame] | 3540 | } |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3541 | |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3542 | void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 3543 | bool has_force, bool force, Error **errp) |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3544 | { |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3545 | AioContext *new_context; |
| 3546 | BlockDriverState *bs; |
| 3547 | |
Kevin Wolf | 2b3912f | 2023-09-29 16:51:39 +0200 | [diff] [blame] | 3548 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 3549 | |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3550 | bs = bdrv_find_node(node_name); |
| 3551 | if (!bs) { |
Connor Kuehl | ef2e38a | 2021-03-05 09:19:29 -0600 | [diff] [blame] | 3552 | 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] | 3553 | return; |
| 3554 | } |
| 3555 | |
Stefan Hajnoczi | 882e9b8 | 2017-12-07 20:13:17 +0000 | [diff] [blame] | 3556 | /* Protects against accidents. */ |
| 3557 | if (!(has_force && force) && bdrv_has_blk(bs)) { |
| 3558 | error_setg(errp, "Node %s is associated with a BlockBackend and could " |
| 3559 | "be in use (use force=true to override this check)", |
| 3560 | node_name); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3561 | return; |
| 3562 | } |
| 3563 | |
| 3564 | if (iothread->type == QTYPE_QSTRING) { |
| 3565 | IOThread *obj = iothread_by_id(iothread->u.s); |
| 3566 | if (!obj) { |
| 3567 | error_setg(errp, "Cannot find iothread %s", iothread->u.s); |
| 3568 | return; |
| 3569 | } |
| 3570 | |
| 3571 | new_context = iothread_get_aio_context(obj); |
| 3572 | } else { |
| 3573 | new_context = qemu_get_aio_context(); |
| 3574 | } |
| 3575 | |
Emanuele Giuseppe Esposito | 142e690 | 2022-10-25 04:49:52 -0400 | [diff] [blame] | 3576 | bdrv_try_change_aio_context(bs, new_context, NULL, errp); |
Stefan Hajnoczi | ca00bbb | 2017-12-06 14:45:49 +0000 | [diff] [blame] | 3577 | } |
| 3578 | |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3579 | QemuOptsList qemu_common_drive_opts = { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3580 | .name = "drive", |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3581 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3582 | .desc = { |
| 3583 | { |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3584 | .name = "snapshot", |
| 3585 | .type = QEMU_OPT_BOOL, |
| 3586 | .help = "enable/disable snapshot mode", |
| 3587 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3588 | .name = "aio", |
| 3589 | .type = QEMU_OPT_STRING, |
Aarushi Mehta | f80f267 | 2020-01-20 14:18:50 +0000 | [diff] [blame] | 3590 | .help = "host AIO implementation (threads, native, io_uring)", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3591 | },{ |
Kevin Wolf | e4b24b4 | 2016-03-15 15:39:42 +0100 | [diff] [blame] | 3592 | .name = BDRV_OPT_CACHE_WB, |
| 3593 | .type = QEMU_OPT_BOOL, |
| 3594 | .help = "Enable writeback mode", |
| 3595 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3596 | .name = "format", |
| 3597 | .type = QEMU_OPT_STRING, |
| 3598 | .help = "disk format (raw, qcow2, ...)", |
| 3599 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3600 | .name = "rerror", |
| 3601 | .type = QEMU_OPT_STRING, |
| 3602 | .help = "read error action", |
| 3603 | },{ |
| 3604 | .name = "werror", |
| 3605 | .type = QEMU_OPT_STRING, |
| 3606 | .help = "write error action", |
| 3607 | },{ |
Alberto Garcia | 4e200cf | 2016-09-15 17:53:05 +0300 | [diff] [blame] | 3608 | .name = BDRV_OPT_READ_ONLY, |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3609 | .type = QEMU_OPT_BOOL, |
| 3610 | .help = "open drive file as read-only", |
Pradeep Jagadeesh | a2a7862 | 2017-02-28 10:31:46 +0100 | [diff] [blame] | 3611 | }, |
| 3612 | |
| 3613 | THROTTLE_OPTS, |
| 3614 | |
| 3615 | { |
Alberto Garcia | 76f4afb | 2015-06-08 18:17:44 +0200 | [diff] [blame] | 3616 | .name = "throttling.group", |
| 3617 | .type = QEMU_OPT_STRING, |
| 3618 | .help = "name of the block throttling group", |
| 3619 | },{ |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3620 | .name = "copy-on-read", |
| 3621 | .type = QEMU_OPT_BOOL, |
| 3622 | .help = "copy read data from backing file into image file", |
Peter Lieven | 465bee1 | 2014-05-18 00:58:19 +0200 | [diff] [blame] | 3623 | },{ |
| 3624 | .name = "detect-zeroes", |
| 3625 | .type = QEMU_OPT_STRING, |
| 3626 | .help = "try to optimize zero writes (off, on, unmap)", |
Alberto Garcia | 362e929 | 2015-10-28 17:33:04 +0200 | [diff] [blame] | 3627 | },{ |
| 3628 | .name = "stats-account-invalid", |
| 3629 | .type = QEMU_OPT_BOOL, |
| 3630 | .help = "whether to account for invalid I/O operations " |
| 3631 | "in the statistics", |
| 3632 | },{ |
| 3633 | .name = "stats-account-failed", |
| 3634 | .type = QEMU_OPT_BOOL, |
| 3635 | .help = "whether to account for failed I/O operations " |
| 3636 | "in the statistics", |
Paolo Bonzini | 4d45457 | 2012-11-26 16:03:42 +0100 | [diff] [blame] | 3637 | }, |
| 3638 | { /* end of list */ } |
| 3639 | }, |
| 3640 | }; |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3641 | |
| 3642 | QemuOptsList qemu_drive_opts = { |
| 3643 | .name = "drive", |
| 3644 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), |
| 3645 | .desc = { |
Kevin Wolf | 492fdc6 | 2013-06-19 13:44:17 +0200 | [diff] [blame] | 3646 | /* |
| 3647 | * no elements => accept any params |
| 3648 | * validation will happen later |
| 3649 | */ |
Kevin Wolf | 0006383 | 2013-03-15 10:35:07 +0100 | [diff] [blame] | 3650 | { /* end of list */ } |
| 3651 | }, |
| 3652 | }; |