blob: ec90eb1cf93d0e7727733f3fcd6084d382c7091b [file] [log] [blame]
Markus Armbruster666daa62010-06-02 18:48:27 +02001/*
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 Armbruster3618a092013-03-14 13:59:53 +01008 *
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 Armbruster666daa62010-06-02 18:48:27 +020031 */
32
Peter Maydelld38ea872016-01-29 17:50:05 +000033#include "qemu/osdep.h"
Markus Armbruster26f54e92014-10-07 13:59:04 +020034#include "sysemu/block-backend.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010035#include "sysemu/blockdev.h"
Paolo Bonzini0d09e412013-02-05 17:06:20 +010036#include "hw/block/block.h"
Paolo Bonzini737e1502012-12-17 18:19:44 +010037#include "block/blockjob.h"
Max Reitz609f45e2018-06-14 21:14:28 +020038#include "block/qdict.h"
Alberto Garcia76f4afb2015-06-08 18:17:44 +020039#include "block/throttle-groups.h"
Paolo Bonzini83c90892012-12-17 18:19:49 +010040#include "monitor/monitor.h"
Markus Armbrusterd49b6832015-03-17 18:29:20 +010041#include "qemu/error-report.h"
Paolo Bonzini1de7afc2012-12-17 18:20:00 +010042#include "qemu/option.h"
43#include "qemu/config-file.h"
Markus Armbruster9af23982018-02-11 10:36:01 +010044#include "qapi/qapi-commands-block.h"
45#include "qapi/qapi-commands-transaction.h"
46#include "qapi/qapi-visit-block-core.h"
Markus Armbruster452fcdb2018-02-01 12:18:39 +010047#include "qapi/qmp/qdict.h"
Markus Armbruster15280c32018-02-01 12:18:36 +010048#include "qapi/qmp/qnum.h"
Markus Armbruster6b673952018-02-01 12:18:35 +010049#include "qapi/qmp/qstring.h"
Markus Armbrustere688df62018-02-01 12:18:31 +010050#include "qapi/error.h"
Markus Armbrustercc7a8ea2015-03-17 17:22:46 +010051#include "qapi/qmp/qerror.h"
Markus Armbruster47e6b292018-02-01 12:18:38 +010052#include "qapi/qmp/qlist.h"
Daniel P. Berrangeb3db2112016-09-30 15:45:27 +010053#include "qapi/qobject-output-visitor.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010054#include "sysemu/sysemu.h"
Stefan Hajnoczica00bbb2017-12-06 14:45:49 +000055#include "sysemu/iothread.h"
Paolo Bonzini737e1502012-12-17 18:19:44 +010056#include "block/block_int.h"
Daniel P. Berrange0ab8ed12017-01-25 16:14:15 +000057#include "block/trace.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010058#include "sysemu/arch_init.h"
Thomas Huthc616f162017-05-12 12:33:49 +020059#include "sysemu/qtest.h"
Veronia Bahaaf348b6d2016-03-20 19:16:19 +020060#include "qemu/cutils.h"
61#include "qemu/help_option.h"
Pradeep Jagadeesha2a78622017-02-28 10:31:46 +010062#include "qemu/throttle-options.h"
Markus Armbruster666daa62010-06-02 18:48:27 +020063
Max Reitz9c4218e2016-01-29 16:36:12 +010064static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states =
65 QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states);
66
Kevin Wolfb33945c2016-09-20 13:38:43 +020067static int do_open_tray(const char *blk_name, const char *qdev_id,
68 bool force, Error **errp);
Max Reitz82fcf662017-11-10 23:43:01 +010069static void blockdev_remove_medium(bool has_device, const char *device,
70 bool has_id, const char *id, Error **errp);
71static void blockdev_insert_medium(bool has_device, const char *device,
72 bool has_id, const char *id,
73 const char *node_name, Error **errp);
Colin Lordbf18bee2016-06-06 14:15:22 -040074
Markus Armbruster19609662011-01-28 11:21:39 +010075static const char *const if_name[IF_COUNT] = {
76 [IF_NONE] = "none",
77 [IF_IDE] = "ide",
78 [IF_SCSI] = "scsi",
79 [IF_FLOPPY] = "floppy",
80 [IF_PFLASH] = "pflash",
81 [IF_MTD] = "mtd",
82 [IF_SD] = "sd",
83 [IF_VIRTIO] = "virtio",
84 [IF_XEN] = "xen",
85};
86
John Snow21dff8c2014-10-01 14:19:25 -040087static int if_max_devs[IF_COUNT] = {
Markus Armbruster27d6bf42011-01-28 11:21:40 +010088 /*
89 * Do not change these numbers! They govern how drive option
90 * index maps to unit and bus. That mapping is ABI.
91 *
Wei Jiangang547cb152016-04-26 18:12:43 +080092 * All controllers used to implement if=T drives need to support
Markus Armbruster27d6bf42011-01-28 11:21:40 +010093 * if_max_devs[T] units, for any T with if_max_devs[T] != 0.
94 * Otherwise, some index values map to "impossible" bus, unit
95 * values.
96 *
97 * For instance, if you change [IF_SCSI] to 255, -drive
98 * if=scsi,index=12 no longer means bus=1,unit=5, but
99 * bus=0,unit=12. With an lsi53c895a controller (7 units max),
100 * the drive can't be set up. Regression.
101 */
102 [IF_IDE] = 2,
103 [IF_SCSI] = 7,
Markus Armbruster19609662011-01-28 11:21:39 +0100104};
105
John Snow21dff8c2014-10-01 14:19:25 -0400106/**
107 * Boards may call this to offer board-by-board overrides
108 * of the default, global values.
109 */
110void override_max_devs(BlockInterfaceType type, int max_devs)
111{
Markus Armbruster18e46a02014-10-07 13:59:06 +0200112 BlockBackend *blk;
John Snow21dff8c2014-10-01 14:19:25 -0400113 DriveInfo *dinfo;
114
115 if (max_devs <= 0) {
116 return;
117 }
118
Markus Armbruster18e46a02014-10-07 13:59:06 +0200119 for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
120 dinfo = blk_legacy_dinfo(blk);
John Snow21dff8c2014-10-01 14:19:25 -0400121 if (dinfo->type == type) {
122 fprintf(stderr, "Cannot override units-per-bus property of"
123 " the %s interface, because a drive of that type has"
124 " already been added.\n", if_name[type]);
125 g_assert_not_reached();
126 }
127 }
128
129 if_max_devs[type] = max_devs;
130}
131
Markus Armbruster14bafc52010-06-25 08:09:10 +0200132/*
133 * We automatically delete the drive when a device using it gets
134 * unplugged. Questionable feature, but we can't just drop it.
135 * Device models call blockdev_mark_auto_del() to schedule the
136 * automatic deletion, and generic qdev code calls blockdev_auto_del()
137 * when deletion is actually safe.
138 */
Markus Armbruster4be74632014-10-07 13:59:18 +0200139void blockdev_mark_auto_del(BlockBackend *blk)
Markus Armbruster14bafc52010-06-25 08:09:10 +0200140{
Markus Armbruster18e46a02014-10-07 13:59:06 +0200141 DriveInfo *dinfo = blk_legacy_dinfo(blk);
Markus Armbruster4be74632014-10-07 13:59:18 +0200142 BlockDriverState *bs = blk_bs(blk);
Stefan Hajnoczi91fddb02014-10-21 12:03:52 +0100143 AioContext *aio_context;
Markus Armbruster14bafc52010-06-25 08:09:10 +0200144
Markus Armbruster26f8b3a2014-10-07 13:59:22 +0200145 if (!dinfo) {
Kevin Wolf2d246f02013-09-18 15:14:47 +0200146 return;
147 }
148
Max Reitz5433c242015-10-19 17:53:29 +0200149 if (bs) {
150 aio_context = bdrv_get_aio_context(bs);
151 aio_context_acquire(aio_context);
Stefan Hajnoczi91fddb02014-10-21 12:03:52 +0100152
Max Reitz5433c242015-10-19 17:53:29 +0200153 if (bs->job) {
Kevin Wolf3d70ff52018-04-24 16:13:52 +0200154 job_cancel(&bs->job->job, false);
Max Reitz5433c242015-10-19 17:53:29 +0200155 }
156
157 aio_context_release(aio_context);
Paolo Bonzini12bde0e2012-03-30 13:17:10 +0200158 }
Stefan Hajnoczi91fddb02014-10-21 12:03:52 +0100159
Markus Armbruster26f8b3a2014-10-07 13:59:22 +0200160 dinfo->auto_del = 1;
Markus Armbruster14bafc52010-06-25 08:09:10 +0200161}
162
Markus Armbruster4be74632014-10-07 13:59:18 +0200163void blockdev_auto_del(BlockBackend *blk)
Markus Armbruster14bafc52010-06-25 08:09:10 +0200164{
Markus Armbruster18e46a02014-10-07 13:59:06 +0200165 DriveInfo *dinfo = blk_legacy_dinfo(blk);
Markus Armbruster14bafc52010-06-25 08:09:10 +0200166
Ryan Harper0fc0f1f2010-12-08 10:05:00 -0600167 if (dinfo && dinfo->auto_del) {
Max Reitzefaa7c42016-03-16 19:54:38 +0100168 monitor_remove_blk(blk);
Markus Armbrusterb9fe8a72014-10-07 13:59:09 +0200169 blk_unref(blk);
Markus Armbruster14bafc52010-06-25 08:09:10 +0200170 }
171}
172
John Snowd8f94e12014-10-01 14:19:27 -0400173/**
174 * Returns the current mapping of how many units per bus
175 * a particular interface can support.
176 *
177 * A positive integer indicates n units per bus.
178 * 0 implies the mapping has not been established.
179 * -1 indicates an invalid BlockInterfaceType was given.
180 */
181int drive_get_max_devs(BlockInterfaceType type)
182{
183 if (type >= IF_IDE && type < IF_COUNT) {
184 return if_max_devs[type];
185 }
186
187 return -1;
188}
189
Markus Armbruster505a7fb2011-01-28 11:21:43 +0100190static int drive_index_to_bus_id(BlockInterfaceType type, int index)
191{
192 int max_devs = if_max_devs[type];
193 return max_devs ? index / max_devs : 0;
194}
195
196static int drive_index_to_unit_id(BlockInterfaceType type, int index)
197{
198 int max_devs = if_max_devs[type];
199 return max_devs ? index % max_devs : index;
200}
201
Markus Armbruster2292dda2011-01-28 11:21:41 +0100202QemuOpts *drive_def(const char *optstr)
203{
Markus Armbruster70b94332015-02-13 12:50:26 +0100204 return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false);
Markus Armbruster2292dda2011-01-28 11:21:41 +0100205}
206
207QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file,
Markus Armbruster5645b0f2011-01-31 11:50:09 +0100208 const char *optstr)
Markus Armbruster666daa62010-06-02 18:48:27 +0200209{
Markus Armbruster666daa62010-06-02 18:48:27 +0200210 QemuOpts *opts;
211
Markus Armbruster2292dda2011-01-28 11:21:41 +0100212 opts = drive_def(optstr);
Markus Armbruster666daa62010-06-02 18:48:27 +0200213 if (!opts) {
214 return NULL;
215 }
Markus Armbruster2292dda2011-01-28 11:21:41 +0100216 if (type != IF_DEFAULT) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +0100217 qemu_opt_set(opts, "if", if_name[type], &error_abort);
Markus Armbruster2292dda2011-01-28 11:21:41 +0100218 }
219 if (index >= 0) {
Markus Armbrustera8b18f82015-02-13 15:50:43 +0100220 qemu_opt_set_number(opts, "index", index, &error_abort);
Markus Armbruster2292dda2011-01-28 11:21:41 +0100221 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200222 if (file)
Markus Armbrusterf43e47d2015-02-12 17:52:20 +0100223 qemu_opt_set(opts, "file", file, &error_abort);
Markus Armbruster666daa62010-06-02 18:48:27 +0200224 return opts;
225}
226
227DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit)
228{
Markus Armbruster18e46a02014-10-07 13:59:06 +0200229 BlockBackend *blk;
Markus Armbruster666daa62010-06-02 18:48:27 +0200230 DriveInfo *dinfo;
231
Markus Armbruster18e46a02014-10-07 13:59:06 +0200232 for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
233 dinfo = blk_legacy_dinfo(blk);
234 if (dinfo && dinfo->type == type
235 && dinfo->bus == bus && dinfo->unit == unit) {
Markus Armbruster666daa62010-06-02 18:48:27 +0200236 return dinfo;
Markus Armbruster18e46a02014-10-07 13:59:06 +0200237 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200238 }
239
240 return NULL;
241}
242
Markus Armbruster720b8dc2017-02-15 11:05:46 +0100243void drive_check_orphaned(void)
John Snowa66c9dc2014-10-01 14:19:24 -0400244{
Markus Armbruster18e46a02014-10-07 13:59:06 +0200245 BlockBackend *blk;
John Snowa66c9dc2014-10-01 14:19:24 -0400246 DriveInfo *dinfo;
Markus Armbruster664cc622017-02-15 11:05:45 +0100247 Location loc;
Markus Armbruster720b8dc2017-02-15 11:05:46 +0100248 bool orphans = false;
John Snowa66c9dc2014-10-01 14:19:24 -0400249
Markus Armbruster18e46a02014-10-07 13:59:06 +0200250 for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
251 dinfo = blk_legacy_dinfo(blk);
Markus Armbrustera7f53e22014-10-07 13:59:25 +0200252 if (!blk_get_attached_dev(blk) && !dinfo->is_default &&
John Snowa66c9dc2014-10-01 14:19:24 -0400253 dinfo->type != IF_NONE) {
Markus Armbruster664cc622017-02-15 11:05:45 +0100254 loc_push_none(&loc);
255 qemu_opts_loc_restore(dinfo->opts);
Markus Armbruster720b8dc2017-02-15 11:05:46 +0100256 error_report("machine type does not support"
Markus Armbruster664cc622017-02-15 11:05:45 +0100257 " if=%s,bus=%d,unit=%d",
258 if_name[dinfo->type], dinfo->bus, dinfo->unit);
259 loc_pop(&loc);
Markus Armbruster720b8dc2017-02-15 11:05:46 +0100260 orphans = true;
John Snowa66c9dc2014-10-01 14:19:24 -0400261 }
262 }
263
Markus Armbruster720b8dc2017-02-15 11:05:46 +0100264 if (orphans) {
265 exit(1);
266 }
John Snowa66c9dc2014-10-01 14:19:24 -0400267}
268
Markus Armbrusterf1bd51a2011-01-28 11:21:44 +0100269DriveInfo *drive_get_by_index(BlockInterfaceType type, int index)
270{
271 return drive_get(type,
272 drive_index_to_bus_id(type, index),
273 drive_index_to_unit_id(type, index));
274}
275
Markus Armbruster666daa62010-06-02 18:48:27 +0200276int drive_get_max_bus(BlockInterfaceType type)
277{
278 int max_bus;
Markus Armbruster18e46a02014-10-07 13:59:06 +0200279 BlockBackend *blk;
Markus Armbruster666daa62010-06-02 18:48:27 +0200280 DriveInfo *dinfo;
281
282 max_bus = -1;
Markus Armbruster18e46a02014-10-07 13:59:06 +0200283 for (blk = blk_next(NULL); blk; blk = blk_next(blk)) {
284 dinfo = blk_legacy_dinfo(blk);
285 if (dinfo && dinfo->type == type && dinfo->bus > max_bus) {
Markus Armbruster666daa62010-06-02 18:48:27 +0200286 max_bus = dinfo->bus;
Markus Armbruster18e46a02014-10-07 13:59:06 +0200287 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200288 }
289 return max_bus;
290}
291
Markus Armbruster13839972011-01-28 11:21:37 +0100292/* Get a block device. This should only be used for single-drive devices
293 (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the
294 appropriate bus. */
295DriveInfo *drive_get_next(BlockInterfaceType type)
296{
297 static int next_block_unit[IF_COUNT];
298
299 return drive_get(type, 0, next_block_unit[type]++);
300}
301
Markus Armbruster666daa62010-06-02 18:48:27 +0200302static void bdrv_format_print(void *opaque, const char *name)
303{
Markus Armbruster807105a2011-01-17 19:31:27 +0100304 error_printf(" %s", name);
Markus Armbruster666daa62010-06-02 18:48:27 +0200305}
306
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000307typedef struct {
308 QEMUBH *bh;
Fam Zhengfa510eb2013-08-23 09:14:51 +0800309 BlockDriverState *bs;
310} BDRVPutRefBH;
Stefan Hajnocziaa398a52012-01-18 14:40:50 +0000311
Kevin Wolfb6810722013-09-20 11:33:11 +0200312static int parse_block_error_action(const char *buf, bool is_read, Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +0200313{
314 if (!strcmp(buf, "ignore")) {
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200315 return BLOCKDEV_ON_ERROR_IGNORE;
Markus Armbruster666daa62010-06-02 18:48:27 +0200316 } else if (!is_read && !strcmp(buf, "enospc")) {
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200317 return BLOCKDEV_ON_ERROR_ENOSPC;
Markus Armbruster666daa62010-06-02 18:48:27 +0200318 } else if (!strcmp(buf, "stop")) {
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200319 return BLOCKDEV_ON_ERROR_STOP;
Markus Armbruster666daa62010-06-02 18:48:27 +0200320 } else if (!strcmp(buf, "report")) {
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200321 return BLOCKDEV_ON_ERROR_REPORT;
Markus Armbruster666daa62010-06-02 18:48:27 +0200322 } else {
Kevin Wolfb6810722013-09-20 11:33:11 +0200323 error_setg(errp, "'%s' invalid %s error action",
324 buf, is_read ? "read" : "write");
Markus Armbruster666daa62010-06-02 18:48:27 +0200325 return -1;
326 }
327}
328
Alberto Garcia40119ef2015-11-16 11:28:38 +0200329static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals,
330 Error **errp)
331{
332 const QListEntry *entry;
333 for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) {
334 switch (qobject_type(entry->value)) {
335
336 case QTYPE_QSTRING: {
337 unsigned long long length;
Max Reitz7dc847e2018-02-24 16:40:29 +0100338 const char *str = qstring_get_str(qobject_to(QString,
339 entry->value));
Alberto Garcia40119ef2015-11-16 11:28:38 +0200340 if (parse_uint_full(str, &length, 10) == 0 &&
341 length > 0 && length <= UINT_MAX) {
342 block_acct_add_interval(stats, (unsigned) length);
343 } else {
344 error_setg(errp, "Invalid interval length: %s", str);
345 return false;
346 }
347 break;
348 }
349
Marc-André Lureau01b2ffc2017-06-07 20:35:58 +0400350 case QTYPE_QNUM: {
Max Reitz7dc847e2018-02-24 16:40:29 +0100351 int64_t length = qnum_get_int(qobject_to(QNum, entry->value));
Marc-André Lureau01b2ffc2017-06-07 20:35:58 +0400352
Alberto Garcia40119ef2015-11-16 11:28:38 +0200353 if (length > 0 && length <= UINT_MAX) {
354 block_acct_add_interval(stats, (unsigned) length);
355 } else {
356 error_setg(errp, "Invalid interval length: %" PRId64, length);
357 return false;
358 }
359 break;
360 }
361
362 default:
363 error_setg(errp, "The specification of stats-intervals is invalid");
364 return false;
365 }
366 }
367 return true;
368}
369
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200370typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType;
371
Max Reitzfbf81752015-10-19 17:53:31 +0200372/* All parameters but @opts are optional and may be set to NULL. */
373static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags,
374 const char **throttling_group, ThrottleConfig *throttle_cfg,
375 BlockdevDetectZeroesOptions *detect_zeroes, Error **errp)
376{
Max Reitzfbf81752015-10-19 17:53:31 +0200377 Error *local_error = NULL;
378 const char *aio;
379
380 if (bdrv_flags) {
Max Reitzfbf81752015-10-19 17:53:31 +0200381 if (qemu_opt_get_bool(opts, "copy-on-read", false)) {
382 *bdrv_flags |= BDRV_O_COPY_ON_READ;
383 }
384
Max Reitzfbf81752015-10-19 17:53:31 +0200385 if ((aio = qemu_opt_get(opts, "aio")) != NULL) {
386 if (!strcmp(aio, "native")) {
387 *bdrv_flags |= BDRV_O_NATIVE_AIO;
388 } else if (!strcmp(aio, "threads")) {
389 /* this is the default */
390 } else {
391 error_setg(errp, "invalid aio option");
392 return;
393 }
394 }
395 }
396
397 /* disk I/O throttling */
398 if (throttling_group) {
399 *throttling_group = qemu_opt_get(opts, "throttling.group");
400 }
401
402 if (throttle_cfg) {
Alberto Garcia1588ab52016-02-18 12:27:00 +0200403 throttle_config_init(throttle_cfg);
Max Reitzfbf81752015-10-19 17:53:31 +0200404 throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg =
405 qemu_opt_get_number(opts, "throttling.bps-total", 0);
406 throttle_cfg->buckets[THROTTLE_BPS_READ].avg =
407 qemu_opt_get_number(opts, "throttling.bps-read", 0);
408 throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg =
409 qemu_opt_get_number(opts, "throttling.bps-write", 0);
410 throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg =
411 qemu_opt_get_number(opts, "throttling.iops-total", 0);
412 throttle_cfg->buckets[THROTTLE_OPS_READ].avg =
413 qemu_opt_get_number(opts, "throttling.iops-read", 0);
414 throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg =
415 qemu_opt_get_number(opts, "throttling.iops-write", 0);
416
417 throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max =
418 qemu_opt_get_number(opts, "throttling.bps-total-max", 0);
419 throttle_cfg->buckets[THROTTLE_BPS_READ].max =
420 qemu_opt_get_number(opts, "throttling.bps-read-max", 0);
421 throttle_cfg->buckets[THROTTLE_BPS_WRITE].max =
422 qemu_opt_get_number(opts, "throttling.bps-write-max", 0);
423 throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max =
424 qemu_opt_get_number(opts, "throttling.iops-total-max", 0);
425 throttle_cfg->buckets[THROTTLE_OPS_READ].max =
426 qemu_opt_get_number(opts, "throttling.iops-read-max", 0);
427 throttle_cfg->buckets[THROTTLE_OPS_WRITE].max =
428 qemu_opt_get_number(opts, "throttling.iops-write-max", 0);
429
Alberto Garcia8a0fc182016-02-18 12:27:02 +0200430 throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length =
431 qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1);
432 throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length =
433 qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1);
434 throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length =
435 qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1);
436 throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length =
437 qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1);
438 throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length =
439 qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1);
440 throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length =
441 qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1);
442
Max Reitzfbf81752015-10-19 17:53:31 +0200443 throttle_cfg->op_size =
444 qemu_opt_get_number(opts, "throttling.iops-size", 0);
445
Alberto Garciad5851082016-02-18 12:26:59 +0200446 if (!throttle_is_valid(throttle_cfg, errp)) {
Max Reitzfbf81752015-10-19 17:53:31 +0200447 return;
448 }
449 }
450
451 if (detect_zeroes) {
452 *detect_zeroes =
Marc-André Lureauf7abe0e2017-08-24 10:46:10 +0200453 qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup,
Max Reitzfbf81752015-10-19 17:53:31 +0200454 qemu_opt_get(opts, "detect-zeroes"),
Max Reitzfbf81752015-10-19 17:53:31 +0200455 BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF,
456 &local_error);
457 if (local_error) {
458 error_propagate(errp, local_error);
459 return;
460 }
Max Reitzfbf81752015-10-19 17:53:31 +0200461 }
462}
463
Kevin Wolff298d072013-09-10 12:01:20 +0200464/* Takes the ownership of bs_opts */
Markus Armbruster18e46a02014-10-07 13:59:06 +0200465static BlockBackend *blockdev_init(const char *file, QDict *bs_opts,
466 Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +0200467{
468 const char *buf;
Markus Armbruster666daa62010-06-02 18:48:27 +0200469 int bdrv_flags = 0;
470 int on_read_error, on_write_error;
Alberto Garcia362e9292015-10-28 17:33:04 +0200471 bool account_invalid, account_failed;
Alberto Garciaf87a0e22016-09-15 17:53:02 +0300472 bool writethrough, read_only;
Markus Armbruster26f54e92014-10-07 13:59:04 +0200473 BlockBackend *blk;
Markus Armbrustera0f1eab2014-09-12 21:26:21 +0200474 BlockDriverState *bs;
Benoît Canetcc0681c2013-09-02 14:14:39 +0200475 ThrottleConfig cfg;
Markus Armbruster666daa62010-06-02 18:48:27 +0200476 int snapshot = 0;
Stefan Hajnoczic5461942013-02-13 16:53:42 +0100477 Error *error = NULL;
Kevin Wolf00063832013-03-15 10:35:07 +0100478 QemuOpts *opts;
Alberto Garcia40119ef2015-11-16 11:28:38 +0200479 QDict *interval_dict = NULL;
480 QList *interval_list = NULL;
Kevin Wolf00063832013-03-15 10:35:07 +0100481 const char *id;
Max Reitzfbf81752015-10-19 17:53:31 +0200482 BlockdevDetectZeroesOptions detect_zeroes =
483 BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF;
484 const char *throttling_group = NULL;
Markus Armbruster666daa62010-06-02 18:48:27 +0200485
Kevin Wolff298d072013-09-10 12:01:20 +0200486 /* Check common options by copying from bs_opts to opts, all other options
487 * stay in bs_opts for processing by bdrv_open(). */
488 id = qdict_get_try_str(bs_opts, "id");
Kevin Wolf00063832013-03-15 10:35:07 +0100489 opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error);
Markus Armbruster84d18f02014-01-30 15:07:28 +0100490 if (error) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200491 error_propagate(errp, error);
Markus Armbruster6376f952014-05-28 11:17:01 +0200492 goto err_no_opts;
Kevin Wolf00063832013-03-15 10:35:07 +0100493 }
494
Kevin Wolf00063832013-03-15 10:35:07 +0100495 qemu_opts_absorb_qdict(opts, bs_opts, &error);
Markus Armbruster84d18f02014-01-30 15:07:28 +0100496 if (error) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200497 error_propagate(errp, error);
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100498 goto early_err;
Kevin Wolf00063832013-03-15 10:35:07 +0100499 }
500
501 if (id) {
502 qdict_del(bs_opts, "id");
503 }
504
Markus Armbruster666daa62010-06-02 18:48:27 +0200505 /* extract parameters */
Markus Armbruster666daa62010-06-02 18:48:27 +0200506 snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
Markus Armbruster666daa62010-06-02 18:48:27 +0200507
Alberto Garcia362e9292015-10-28 17:33:04 +0200508 account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true);
509 account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true);
510
Kevin Wolfe4b24b42016-03-15 15:39:42 +0100511 writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true);
512
Alberto Garciaff356ee2016-07-08 17:03:00 +0300513 id = qemu_opts_id(opts);
514
Alberto Garcia40119ef2015-11-16 11:28:38 +0200515 qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals.");
516 qdict_array_split(interval_dict, &interval_list);
517
518 if (qdict_size(interval_dict) != 0) {
519 error_setg(errp, "Invalid option stats-intervals.%s",
520 qdict_first(interval_dict)->key);
521 goto early_err;
522 }
Alberto Garcia2be55062015-10-28 17:33:07 +0200523
Max Reitzfbf81752015-10-19 17:53:31 +0200524 extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg,
525 &detect_zeroes, &error);
526 if (error) {
527 error_propagate(errp, error);
528 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200529 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200530
531 if ((buf = qemu_opt_get(opts, "format")) != NULL) {
Peter Maydellc8057f92012-08-02 13:45:54 +0100532 if (is_help_option(buf)) {
533 error_printf("Supported formats:");
534 bdrv_iterate_format(bdrv_format_print, NULL);
535 error_printf("\n");
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100536 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200537 }
Kevin Wolf74fe54f2013-07-09 11:09:02 +0200538
Max Reitze4342ce2015-02-05 13:58:14 -0500539 if (qdict_haskey(bs_opts, "driver")) {
540 error_setg(errp, "Cannot specify both 'driver' and 'format'");
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100541 goto early_err;
Mike Qiu6db5f5d2013-08-08 10:45:16 -0400542 }
Eric Blake46f5ac22017-04-27 16:58:17 -0500543 qdict_put_str(bs_opts, "driver", buf);
Markus Armbruster666daa62010-06-02 18:48:27 +0200544 }
545
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200546 on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
Markus Armbruster666daa62010-06-02 18:48:27 +0200547 if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200548 on_write_error = parse_block_error_action(buf, 0, &error);
Markus Armbruster84d18f02014-01-30 15:07:28 +0100549 if (error) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200550 error_propagate(errp, error);
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100551 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200552 }
553 }
554
Paolo Bonzini92aa5c62012-09-28 17:22:55 +0200555 on_read_error = BLOCKDEV_ON_ERROR_REPORT;
Markus Armbruster666daa62010-06-02 18:48:27 +0200556 if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200557 on_read_error = parse_block_error_action(buf, 1, &error);
Markus Armbruster84d18f02014-01-30 15:07:28 +0100558 if (error) {
Kevin Wolfb6810722013-09-20 11:33:11 +0200559 error_propagate(errp, error);
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100560 goto early_err;
Markus Armbruster666daa62010-06-02 18:48:27 +0200561 }
562 }
563
Max Reitz5ec18f82015-10-19 17:53:30 +0200564 if (snapshot) {
Kevin Wolf91a097e2015-05-08 17:49:53 +0200565 bdrv_flags |= BDRV_O_SNAPSHOT;
Max Reitz5ec18f82015-10-19 17:53:30 +0200566 }
567
Alberto Garciaf87a0e22016-09-15 17:53:02 +0300568 read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false);
569
Kevin Wolf326642b2013-07-11 12:52:34 +0200570 /* init */
Kevin Wolf39c4ae92015-11-13 14:45:42 +0100571 if ((!file || !*file) && !qdict_size(bs_opts)) {
Max Reitz5ec18f82015-10-19 17:53:30 +0200572 BlockBackendRootState *blk_rs;
573
Kevin Wolf6d0eb642017-01-20 17:07:26 +0100574 blk = blk_new(0, BLK_PERM_ALL);
Max Reitz5ec18f82015-10-19 17:53:30 +0200575 blk_rs = blk_get_root_state(blk);
576 blk_rs->open_flags = bdrv_flags;
Alberto Garciaf87a0e22016-09-15 17:53:02 +0300577 blk_rs->read_only = read_only;
Max Reitz5ec18f82015-10-19 17:53:30 +0200578 blk_rs->detect_zeroes = detect_zeroes;
579
Marc-André Lureaucb3e7f02018-04-19 17:01:43 +0200580 qobject_unref(bs_opts);
Max Reitze4342ce2015-02-05 13:58:14 -0500581 } else {
582 if (file && !*file) {
583 file = NULL;
584 }
585
Kevin Wolf91a097e2015-05-08 17:49:53 +0200586 /* bdrv_open() defaults to the values in bdrv_flags (for compatibility
587 * with other callers) rather than what we want as the real defaults.
588 * Apply the defaults here instead. */
Kevin Wolf91a097e2015-05-08 17:49:53 +0200589 qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off");
590 qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off");
Alberto Garciaf87a0e22016-09-15 17:53:02 +0300591 qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY,
592 read_only ? "on" : "off");
Kevin Wolf72e775c2016-03-15 14:34:37 +0100593 assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0);
Kevin Wolf91a097e2015-05-08 17:49:53 +0200594
Kevin Wolf12d5ee32016-02-19 16:48:10 +0100595 if (runstate_check(RUN_STATE_INMIGRATE)) {
596 bdrv_flags |= BDRV_O_INACTIVE;
597 }
598
Max Reitzefaa7c42016-03-16 19:54:38 +0100599 blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp);
Max Reitze4342ce2015-02-05 13:58:14 -0500600 if (!blk) {
601 goto err_no_bs_opts;
602 }
603 bs = blk_bs(blk);
Max Reitze4342ce2015-02-05 13:58:14 -0500604
Max Reitz5ec18f82015-10-19 17:53:30 +0200605 bs->detect_zeroes = detect_zeroes;
606
Paolo Bonzini9caa6f32017-06-05 14:39:07 +0200607 block_acct_setup(blk_get_stats(blk), account_invalid, account_failed);
Alberto Garcia2be55062015-10-28 17:33:07 +0200608
Alberto Garcia40119ef2015-11-16 11:28:38 +0200609 if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) {
610 blk_unref(blk);
611 blk = NULL;
612 goto err_no_bs_opts;
Alberto Garcia2be55062015-10-28 17:33:07 +0200613 }
Max Reitz5ec18f82015-10-19 17:53:30 +0200614 }
Markus Armbruster666daa62010-06-02 18:48:27 +0200615
Kevin Wolf7ca7f0f2016-03-22 13:00:08 +0100616 /* disk I/O throttling */
617 if (throttle_enabled(&cfg)) {
618 if (!throttling_group) {
Alberto Garciaff356ee2016-07-08 17:03:00 +0300619 throttling_group = id;
Kevin Wolf7ca7f0f2016-03-22 13:00:08 +0100620 }
621 blk_io_limits_enable(blk, throttling_group);
622 blk_set_io_limits(blk, &cfg);
623 }
624
Kevin Wolfe4b24b42016-03-15 15:39:42 +0100625 blk_set_enable_write_cache(blk, !writethrough);
Max Reitz373340b2015-10-19 17:53:22 +0200626 blk_set_on_error(blk, on_read_error, on_write_error);
Markus Armbrusterabd7f682010-06-02 18:55:17 +0200627
Alberto Garciaff356ee2016-07-08 17:03:00 +0300628 if (!monitor_add_blk(blk, id, errp)) {
Max Reitzefaa7c42016-03-16 19:54:38 +0100629 blk_unref(blk);
630 blk = NULL;
631 goto err_no_bs_opts;
632 }
633
Max Reitze4342ce2015-02-05 13:58:14 -0500634err_no_bs_opts:
Kevin Wolf00063832013-03-15 10:35:07 +0100635 qemu_opts_del(opts);
Marc-André Lureaucb3e7f02018-04-19 17:01:43 +0200636 qobject_unref(interval_dict);
637 qobject_unref(interval_list);
Markus Armbruster18e46a02014-10-07 13:59:06 +0200638 return blk;
Markus Armbrustera9ae2bf2011-02-08 15:12:39 +0100639
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100640early_err:
Stefan Hajnocziec9c10d2013-10-30 14:54:30 +0100641 qemu_opts_del(opts);
Marc-André Lureaucb3e7f02018-04-19 17:01:43 +0200642 qobject_unref(interval_dict);
643 qobject_unref(interval_list);
Markus Armbruster6376f952014-05-28 11:17:01 +0200644err_no_opts:
Marc-André Lureaucb3e7f02018-04-19 17:01:43 +0200645 qobject_unref(bs_opts);
Markus Armbrustera9ae2bf2011-02-08 15:12:39 +0100646 return NULL;
Markus Armbruster666daa62010-06-02 18:48:27 +0200647}
648
Max Reitzbd745e22015-10-19 17:53:32 +0200649/* Takes the ownership of bs_opts */
650static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp)
651{
Max Reitzbd745e22015-10-19 17:53:32 +0200652 int bdrv_flags = 0;
653
Kevin Wolfa81d6162016-03-07 14:23:04 +0100654 /* bdrv_open() defaults to the values in bdrv_flags (for compatibility
655 * with other callers) rather than what we want as the real defaults.
656 * Apply the defaults here instead. */
Kevin Wolfa81d6162016-03-07 14:23:04 +0100657 qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off");
658 qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off");
Alberto Garciaf87a0e22016-09-15 17:53:02 +0300659 qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off");
Kevin Wolfa81d6162016-03-07 14:23:04 +0100660
Kevin Wolf12d5ee32016-02-19 16:48:10 +0100661 if (runstate_check(RUN_STATE_INMIGRATE)) {
662 bdrv_flags |= BDRV_O_INACTIVE;
663 }
664
Kevin Wolf74e1ae72016-09-20 20:48:52 +0200665 return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp);
Max Reitzbd745e22015-10-19 17:53:32 +0200666}
667
Max Reitz9c4218e2016-01-29 16:36:12 +0100668void blockdev_close_all_bdrv_states(void)
669{
670 BlockDriverState *bs, *next_bs;
671
672 QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) {
673 AioContext *ctx = bdrv_get_aio_context(bs);
674
675 aio_context_acquire(ctx);
676 bdrv_unref(bs);
677 aio_context_release(ctx);
678 }
679}
680
Max Reitz262b4e82016-03-16 19:54:41 +0100681/* Iterates over the list of monitor-owned BlockDriverStates */
682BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs)
683{
684 return bs ? QTAILQ_NEXT(bs, monitor_list)
685 : QTAILQ_FIRST(&monitor_bdrv_states);
686}
687
Kevin Wolf5abbf0e2014-09-18 11:48:34 +0200688static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to,
689 Error **errp)
Kevin Wolf57975222013-07-17 14:41:54 +0200690{
691 const char *value;
692
693 value = qemu_opt_get(opts, from);
694 if (value) {
Kevin Wolf5abbf0e2014-09-18 11:48:34 +0200695 if (qemu_opt_find(opts, to)) {
696 error_setg(errp, "'%s' and its alias '%s' can't be used at the "
697 "same time", to, from);
698 return;
699 }
Jun Li20d6cd42014-09-24 13:45:27 +0800700 }
701
702 /* rename all items in opts */
703 while ((value = qemu_opt_get(opts, from))) {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +0100704 qemu_opt_set(opts, to, value, &error_abort);
Kevin Wolf57975222013-07-17 14:41:54 +0200705 qemu_opt_unset(opts, from);
706 }
707}
708
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200709QemuOptsList qemu_legacy_drive_opts = {
710 .name = "drive",
711 .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head),
712 .desc = {
713 {
Kevin Wolf87a899c2013-09-10 15:48:13 +0200714 .name = "bus",
715 .type = QEMU_OPT_NUMBER,
716 .help = "bus number",
717 },{
718 .name = "unit",
719 .type = QEMU_OPT_NUMBER,
720 .help = "unit number (i.e. lun for scsi)",
721 },{
722 .name = "index",
723 .type = QEMU_OPT_NUMBER,
724 .help = "index number",
725 },{
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200726 .name = "media",
727 .type = QEMU_OPT_STRING,
728 .help = "media type (disk, cdrom)",
Kevin Wolf593d4642013-08-28 17:24:51 +0200729 },{
730 .name = "if",
731 .type = QEMU_OPT_STRING,
732 .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
Kevin Wolfb41a7332013-09-09 16:49:49 +0200733 },{
Max Reitzd095b462013-12-20 19:28:14 +0100734 .name = "file",
735 .type = QEMU_OPT_STRING,
736 .help = "file name",
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200737 },
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200738
739 /* Options that are passed on, but have special semantics with -drive */
740 {
Alberto Garcia4e200cf2016-09-15 17:53:05 +0300741 .name = BDRV_OPT_READ_ONLY,
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200742 .type = QEMU_OPT_BOOL,
743 .help = "open drive file as read-only",
744 },{
Kevin Wolfee13ed12014-02-09 09:52:32 +0100745 .name = "rerror",
746 .type = QEMU_OPT_STRING,
747 .help = "read error action",
748 },{
749 .name = "werror",
750 .type = QEMU_OPT_STRING,
751 .help = "write error action",
752 },{
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200753 .name = "copy-on-read",
754 .type = QEMU_OPT_BOOL,
755 .help = "copy read data from backing file into image file",
756 },
757
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200758 { /* end of list */ }
759 },
760};
761
Markus Armbruster60e19e02014-06-06 14:50:58 +0200762DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
Kevin Wolf57975222013-07-17 14:41:54 +0200763{
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200764 const char *value;
Markus Armbruster18e46a02014-10-07 13:59:06 +0200765 BlockBackend *blk;
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200766 DriveInfo *dinfo = NULL;
Kevin Wolff298d072013-09-10 12:01:20 +0200767 QDict *bs_opts;
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200768 QemuOpts *legacy_opts;
769 DriveMediaType media = MEDIA_DISK;
Kevin Wolf593d4642013-08-28 17:24:51 +0200770 BlockInterfaceType type;
Kevin Wolf87a899c2013-09-10 15:48:13 +0200771 int max_devs, bus_id, unit_id, index;
Kevin Wolfee13ed12014-02-09 09:52:32 +0100772 const char *werror, *rerror;
Fam Zhenga7fdbcf2013-10-15 17:45:50 +0800773 bool read_only = false;
774 bool copy_on_read;
Max Reitzd095b462013-12-20 19:28:14 +0100775 const char *filename;
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200776 Error *local_err = NULL;
Kevin Wolf247147f2014-09-24 16:37:14 +0200777 int i;
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200778
Kevin Wolf57975222013-07-17 14:41:54 +0200779 /* Change legacy command line options into QMP ones */
Kevin Wolf247147f2014-09-24 16:37:14 +0200780 static const struct {
781 const char *from;
782 const char *to;
783 } opt_renames[] = {
784 { "iops", "throttling.iops-total" },
785 { "iops_rd", "throttling.iops-read" },
786 { "iops_wr", "throttling.iops-write" },
Kevin Wolf57975222013-07-17 14:41:54 +0200787
Kevin Wolf247147f2014-09-24 16:37:14 +0200788 { "bps", "throttling.bps-total" },
789 { "bps_rd", "throttling.bps-read" },
790 { "bps_wr", "throttling.bps-write" },
Kevin Wolf57975222013-07-17 14:41:54 +0200791
Kevin Wolf247147f2014-09-24 16:37:14 +0200792 { "iops_max", "throttling.iops-total-max" },
793 { "iops_rd_max", "throttling.iops-read-max" },
794 { "iops_wr_max", "throttling.iops-write-max" },
Benoît Canet3e9fab62013-09-02 14:14:40 +0200795
Kevin Wolf247147f2014-09-24 16:37:14 +0200796 { "bps_max", "throttling.bps-total-max" },
797 { "bps_rd_max", "throttling.bps-read-max" },
798 { "bps_wr_max", "throttling.bps-write-max" },
Benoît Canet3e9fab62013-09-02 14:14:40 +0200799
Kevin Wolf247147f2014-09-24 16:37:14 +0200800 { "iops_size", "throttling.iops-size" },
Benoît Canet2024c1d2013-09-02 14:14:41 +0200801
Alberto Garcia76f4afb2015-06-08 18:17:44 +0200802 { "group", "throttling.group" },
803
Alberto Garcia4e200cf2016-09-15 17:53:05 +0300804 { "readonly", BDRV_OPT_READ_ONLY },
Kevin Wolf247147f2014-09-24 16:37:14 +0200805 };
806
807 for (i = 0; i < ARRAY_SIZE(opt_renames); i++) {
Kevin Wolf5abbf0e2014-09-18 11:48:34 +0200808 qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to,
809 &local_err);
810 if (local_err) {
Markus Armbruster565f65d2015-02-12 13:55:05 +0100811 error_report_err(local_err);
Kevin Wolf5abbf0e2014-09-18 11:48:34 +0200812 return NULL;
813 }
Kevin Wolf247147f2014-09-24 16:37:14 +0200814 }
Kevin Wolf0f227a92013-07-19 20:07:29 +0200815
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200816 value = qemu_opt_get(all_opts, "cache");
817 if (value) {
818 int flags = 0;
Kevin Wolf04feb4a2016-03-18 15:35:51 +0100819 bool writethrough;
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200820
Kevin Wolf04feb4a2016-03-18 15:35:51 +0100821 if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) {
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200822 error_report("invalid cache option");
823 return NULL;
824 }
825
826 /* Specific options take precedence */
Kevin Wolf54861b92015-04-07 16:55:00 +0200827 if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) {
828 qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB,
Kevin Wolf04feb4a2016-03-18 15:35:51 +0100829 !writethrough, &error_abort);
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200830 }
Kevin Wolf54861b92015-04-07 16:55:00 +0200831 if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) {
832 qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT,
Markus Armbrustercccb7962015-02-12 16:37:44 +0100833 !!(flags & BDRV_O_NOCACHE), &error_abort);
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200834 }
Kevin Wolf54861b92015-04-07 16:55:00 +0200835 if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) {
836 qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH,
Markus Armbrustercccb7962015-02-12 16:37:44 +0100837 !!(flags & BDRV_O_NO_FLUSH), &error_abort);
Kevin Wolf29c4e2b2013-07-18 16:31:25 +0200838 }
839 qemu_opt_unset(all_opts, "cache");
840 }
841
Kevin Wolff298d072013-09-10 12:01:20 +0200842 /* Get a QDict for processing the options */
843 bs_opts = qdict_new();
844 qemu_opts_to_qdict(all_opts, bs_opts);
845
Peter Crosthwaite87ea75d2014-01-01 18:49:17 -0800846 legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0,
847 &error_abort);
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200848 qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +0100849 if (local_err) {
Markus Armbruster565f65d2015-02-12 13:55:05 +0100850 error_report_err(local_err);
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200851 goto fail;
852 }
853
854 /* Media type */
855 value = qemu_opt_get(legacy_opts, "media");
856 if (value) {
857 if (!strcmp(value, "disk")) {
858 media = MEDIA_DISK;
859 } else if (!strcmp(value, "cdrom")) {
860 media = MEDIA_CDROM;
Fam Zhenga7fdbcf2013-10-15 17:45:50 +0800861 read_only = true;
Kevin Wolf33cb7dc2013-08-28 17:00:13 +0200862 } else {
863 error_report("'%s' invalid media", value);
864 goto fail;
865 }
866 }
867
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200868 /* copy-on-read is disabled with a warning for read-only devices */
Alberto Garcia4e200cf2016-09-15 17:53:05 +0300869 read_only |= qemu_opt_get_bool(legacy_opts, BDRV_OPT_READ_ONLY, false);
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200870 copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false);
871
872 if (read_only && copy_on_read) {
Alistair Francis3dc6f862017-07-12 06:57:41 -0700873 warn_report("disabling copy-on-read on read-only drive");
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200874 copy_on_read = false;
875 }
876
Eric Blake46f5ac22017-04-27 16:58:17 -0500877 qdict_put_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off");
878 qdict_put_str(bs_opts, "copy-on-read", copy_on_read ? "on" : "off");
Kevin Wolf0ebd24e2013-09-19 15:12:18 +0200879
Kevin Wolf593d4642013-08-28 17:24:51 +0200880 /* Controller type */
881 value = qemu_opt_get(legacy_opts, "if");
882 if (value) {
883 for (type = 0;
884 type < IF_COUNT && strcmp(value, if_name[type]);
885 type++) {
886 }
887 if (type == IF_COUNT) {
888 error_report("unsupported bus type '%s'", value);
889 goto fail;
890 }
891 } else {
892 type = block_default_type;
893 }
894
Kevin Wolf87a899c2013-09-10 15:48:13 +0200895 /* Device address specified by bus/unit or index.
896 * If none was specified, try to find the first free one. */
897 bus_id = qemu_opt_get_number(legacy_opts, "bus", 0);
898 unit_id = qemu_opt_get_number(legacy_opts, "unit", -1);
899 index = qemu_opt_get_number(legacy_opts, "index", -1);
900
901 max_devs = if_max_devs[type];
902
903 if (index != -1) {
904 if (bus_id != 0 || unit_id != -1) {
905 error_report("index cannot be used with bus and unit");
906 goto fail;
907 }
908 bus_id = drive_index_to_bus_id(type, index);
909 unit_id = drive_index_to_unit_id(type, index);
910 }
911
912 if (unit_id == -1) {
913 unit_id = 0;
914 while (drive_get(type, bus_id, unit_id) != NULL) {
915 unit_id++;
916 if (max_devs && unit_id >= max_devs) {
917 unit_id -= max_devs;
918 bus_id++;
919 }
920 }
921 }
922
923 if (max_devs && unit_id >= max_devs) {
924 error_report("unit %d too big (max is %d)", unit_id, max_devs - 1);
925 goto fail;
926 }
927
928 if (drive_get(type, bus_id, unit_id) != NULL) {
929 error_report("drive with bus=%d, unit=%d (index=%d) exists",
930 bus_id, unit_id, index);
931 goto fail;
932 }
933
934 /* no id supplied -> create one */
935 if (qemu_opts_id(all_opts) == NULL) {
936 char *new_id;
937 const char *mediastr = "";
938 if (type == IF_IDE || type == IF_SCSI) {
939 mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
940 }
941 if (max_devs) {
942 new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id,
943 mediastr, unit_id);
944 } else {
945 new_id = g_strdup_printf("%s%s%i", if_name[type],
946 mediastr, unit_id);
947 }
Eric Blake46f5ac22017-04-27 16:58:17 -0500948 qdict_put_str(bs_opts, "id", new_id);
Kevin Wolf87a899c2013-09-10 15:48:13 +0200949 g_free(new_id);
950 }
951
Kevin Wolf394c7d42013-09-13 14:09:17 +0200952 /* Add virtio block device */
Kevin Wolf394c7d42013-09-13 14:09:17 +0200953 if (type == IF_VIRTIO) {
954 QemuOpts *devopts;
Peter Crosthwaite87ea75d2014-01-01 18:49:17 -0800955 devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
956 &error_abort);
Kevin Wolf394c7d42013-09-13 14:09:17 +0200957 if (arch_type == QEMU_ARCH_S390X) {
Alexander Graf1f68f1d2015-06-16 23:06:33 +0200958 qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort);
Kevin Wolf394c7d42013-09-13 14:09:17 +0200959 } else {
Markus Armbrusterf43e47d2015-02-12 17:52:20 +0100960 qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort);
Kevin Wolf394c7d42013-09-13 14:09:17 +0200961 }
Markus Armbrusterf43e47d2015-02-12 17:52:20 +0100962 qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"),
963 &error_abort);
Kevin Wolf394c7d42013-09-13 14:09:17 +0200964 }
965
Max Reitzd095b462013-12-20 19:28:14 +0100966 filename = qemu_opt_get(legacy_opts, "file");
967
Kevin Wolfee13ed12014-02-09 09:52:32 +0100968 /* Check werror/rerror compatibility with if=... */
969 werror = qemu_opt_get(legacy_opts, "werror");
970 if (werror != NULL) {
971 if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO &&
972 type != IF_NONE) {
973 error_report("werror is not supported by this bus type");
974 goto fail;
975 }
Eric Blake46f5ac22017-04-27 16:58:17 -0500976 qdict_put_str(bs_opts, "werror", werror);
Kevin Wolfee13ed12014-02-09 09:52:32 +0100977 }
978
979 rerror = qemu_opt_get(legacy_opts, "rerror");
980 if (rerror != NULL) {
981 if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI &&
982 type != IF_NONE) {
983 error_report("rerror is not supported by this bus type");
984 goto fail;
985 }
Eric Blake46f5ac22017-04-27 16:58:17 -0500986 qdict_put_str(bs_opts, "rerror", rerror);
Kevin Wolfee13ed12014-02-09 09:52:32 +0100987 }
988
Kevin Wolf2d246f02013-09-18 15:14:47 +0200989 /* Actual block device init: Functionality shared with blockdev-add */
Markus Armbruster18e46a02014-10-07 13:59:06 +0200990 blk = blockdev_init(filename, bs_opts, &local_err);
Markus Armbruster3cb0e252014-05-28 11:17:02 +0200991 bs_opts = NULL;
Markus Armbruster18e46a02014-10-07 13:59:06 +0200992 if (!blk) {
Markus Armbruster84d18f02014-01-30 15:07:28 +0100993 if (local_err) {
Markus Armbruster565f65d2015-02-12 13:55:05 +0100994 error_report_err(local_err);
Kevin Wolfb6810722013-09-20 11:33:11 +0200995 }
Kevin Wolf2d246f02013-09-18 15:14:47 +0200996 goto fail;
Kevin Wolfb6810722013-09-20 11:33:11 +0200997 } else {
Markus Armbruster84d18f02014-01-30 15:07:28 +0100998 assert(!local_err);
Kevin Wolf2d246f02013-09-18 15:14:47 +0200999 }
1000
Markus Armbruster26f8b3a2014-10-07 13:59:22 +02001001 /* Create legacy DriveInfo */
1002 dinfo = g_malloc0(sizeof(*dinfo));
Kevin Wolff298d072013-09-10 12:01:20 +02001003 dinfo->opts = all_opts;
Kevin Wolf2d246f02013-09-18 15:14:47 +02001004
Kevin Wolfee13ed12014-02-09 09:52:32 +01001005 dinfo->type = type;
Kevin Wolf87a899c2013-09-10 15:48:13 +02001006 dinfo->bus = bus_id;
1007 dinfo->unit = unit_id;
Kevin Wolfbcf83152014-06-06 15:21:48 +02001008
Markus Armbruster26f8b3a2014-10-07 13:59:22 +02001009 blk_set_legacy_dinfo(blk, dinfo);
1010
Kevin Wolfe34ef042013-09-19 14:24:10 +02001011 switch(type) {
1012 case IF_IDE:
1013 case IF_SCSI:
1014 case IF_XEN:
1015 case IF_NONE:
1016 dinfo->media_cd = media == MEDIA_CDROM;
1017 break;
1018 default:
1019 break;
1020 }
1021
Kevin Wolf2d246f02013-09-18 15:14:47 +02001022fail:
Kevin Wolf33cb7dc2013-08-28 17:00:13 +02001023 qemu_opts_del(legacy_opts);
Marc-André Lureaucb3e7f02018-04-19 17:01:43 +02001024 qobject_unref(bs_opts);
Kevin Wolf2d246f02013-09-18 15:14:47 +02001025 return dinfo;
Kevin Wolf57975222013-07-17 14:41:54 +02001026}
1027
Kevin Wolfb6c1bae2016-06-23 14:20:24 +02001028static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp)
1029{
1030 BlockDriverState *bs;
1031
1032 bs = bdrv_lookup_bs(name, name, errp);
1033 if (bs == NULL) {
1034 return NULL;
1035 }
1036
1037 if (!bdrv_is_root_node(bs)) {
1038 error_setg(errp, "Need a root block node");
1039 return NULL;
1040 }
1041
1042 if (!bdrv_is_inserted(bs)) {
1043 error_setg(errp, "Device has no medium");
1044 return NULL;
1045 }
1046
1047 return bs;
1048}
1049
Kevin Wolfb33945c2016-09-20 13:38:43 +02001050static BlockBackend *qmp_get_blk(const char *blk_name, const char *qdev_id,
1051 Error **errp)
1052{
1053 BlockBackend *blk;
1054
1055 if (!blk_name == !qdev_id) {
1056 error_setg(errp, "Need exactly one of 'device' and 'id'");
1057 return NULL;
1058 }
1059
1060 if (qdev_id) {
1061 blk = blk_by_qdev_id(qdev_id, errp);
1062 } else {
1063 blk = blk_by_name(blk_name);
1064 if (blk == NULL) {
1065 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
1066 "Device '%s' not found", blk_name);
1067 }
1068 }
1069
1070 return blk;
1071}
1072
Markus Armbruster3e5a50d2015-02-06 13:55:43 +01001073void hmp_commit(Monitor *mon, const QDict *qdict)
Markus Armbruster666daa62010-06-02 18:48:27 +02001074{
Markus Armbruster666daa62010-06-02 18:48:27 +02001075 const char *device = qdict_get_str(qdict, "device");
Fam Zhenga0e85442015-03-02 19:36:48 +08001076 BlockBackend *blk;
Stefan Hajnoczie8877492012-03-05 18:10:11 +00001077 int ret;
Markus Armbruster666daa62010-06-02 18:48:27 +02001078
Markus Armbruster6ab4b5a2010-06-02 18:55:18 +02001079 if (!strcmp(device, "all")) {
Max Reitzda31d592016-03-16 19:54:32 +01001080 ret = blk_commit_all();
Markus Armbruster6ab4b5a2010-06-02 18:55:18 +02001081 } else {
Stefan Hajnoczi84aa0142015-11-04 20:27:23 +03001082 BlockDriverState *bs;
1083 AioContext *aio_context;
1084
Fam Zhenga0e85442015-03-02 19:36:48 +08001085 blk = blk_by_name(device);
1086 if (!blk) {
Jeff Cody58513bd2013-01-18 12:45:35 -05001087 monitor_printf(mon, "Device '%s' not found\n", device);
Markus Armbrusterac59eb92010-06-02 18:55:19 +02001088 return;
Markus Armbruster6ab4b5a2010-06-02 18:55:18 +02001089 }
Max Reitz5433c242015-10-19 17:53:29 +02001090 if (!blk_is_available(blk)) {
1091 monitor_printf(mon, "Device '%s' has no medium\n", device);
1092 return;
1093 }
Stefan Hajnoczi84aa0142015-11-04 20:27:23 +03001094
1095 bs = blk_bs(blk);
1096 aio_context = bdrv_get_aio_context(bs);
1097 aio_context_acquire(aio_context);
1098
1099 ret = bdrv_commit(bs);
1100
1101 aio_context_release(aio_context);
Jeff Cody58513bd2013-01-18 12:45:35 -05001102 }
1103 if (ret < 0) {
1104 monitor_printf(mon, "'commit' error for '%s': %s\n", device,
1105 strerror(-ret));
Markus Armbruster666daa62010-06-02 18:48:27 +02001106 }
1107}
1108
Eric Blake10f75902016-03-03 09:16:50 -07001109static void blockdev_do_action(TransactionAction *action, Error **errp)
Paolo Bonzini6cc2a412012-03-06 18:55:59 +01001110{
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001111 TransactionActionList list;
Paolo Bonzini6cc2a412012-03-06 18:55:59 +01001112
Eric Blake10f75902016-03-03 09:16:50 -07001113 list.value = action;
Paolo Bonzini6cc2a412012-03-06 18:55:59 +01001114 list.next = NULL;
John Snow94d16a62015-11-05 18:13:18 -05001115 qmp_transaction(&list, false, NULL, errp);
Paolo Bonzini6cc2a412012-03-06 18:55:59 +01001116}
1117
Benoît Canet0901f672014-01-23 21:31:38 +01001118void qmp_blockdev_snapshot_sync(bool has_device, const char *device,
1119 bool has_node_name, const char *node_name,
1120 const char *snapshot_file,
1121 bool has_snapshot_node_name,
1122 const char *snapshot_node_name,
Luiz Capitulino6106e242011-11-25 16:15:19 -02001123 bool has_format, const char *format,
Benoît Canet0901f672014-01-23 21:31:38 +01001124 bool has_mode, NewImageMode mode, Error **errp)
Jes Sorensenf8882562010-12-16 13:52:16 +01001125{
Alberto Garciaa911e6a2015-10-26 14:27:14 +02001126 BlockdevSnapshotSync snapshot = {
Benoît Canet0901f672014-01-23 21:31:38 +01001127 .has_device = has_device,
Paolo Bonzini6cc2a412012-03-06 18:55:59 +01001128 .device = (char *) device,
Benoît Canet0901f672014-01-23 21:31:38 +01001129 .has_node_name = has_node_name,
1130 .node_name = (char *) node_name,
Paolo Bonzini6cc2a412012-03-06 18:55:59 +01001131 .snapshot_file = (char *) snapshot_file,
Benoît Canet0901f672014-01-23 21:31:38 +01001132 .has_snapshot_node_name = has_snapshot_node_name,
1133 .snapshot_node_name = (char *) snapshot_node_name,
Paolo Bonzini6cc2a412012-03-06 18:55:59 +01001134 .has_format = has_format,
1135 .format = (char *) format,
1136 .has_mode = has_mode,
1137 .mode = mode,
1138 };
Eric Blake10f75902016-03-03 09:16:50 -07001139 TransactionAction action = {
1140 .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC,
Eric Blake32bafa82016-03-17 16:48:37 -06001141 .u.blockdev_snapshot_sync.data = &snapshot,
Eric Blake10f75902016-03-03 09:16:50 -07001142 };
1143 blockdev_do_action(&action, errp);
Jes Sorensenf8882562010-12-16 13:52:16 +01001144}
1145
Alberto Garcia43de7e22015-10-26 14:27:16 +02001146void qmp_blockdev_snapshot(const char *node, const char *overlay,
1147 Error **errp)
1148{
1149 BlockdevSnapshot snapshot_data = {
1150 .node = (char *) node,
1151 .overlay = (char *) overlay
1152 };
Eric Blake10f75902016-03-03 09:16:50 -07001153 TransactionAction action = {
1154 .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT,
Eric Blake32bafa82016-03-17 16:48:37 -06001155 .u.blockdev_snapshot.data = &snapshot_data,
Eric Blake10f75902016-03-03 09:16:50 -07001156 };
1157 blockdev_do_action(&action, errp);
Alberto Garcia43de7e22015-10-26 14:27:16 +02001158}
1159
Wenchao Xiaf323bc92013-09-11 14:04:35 +08001160void qmp_blockdev_snapshot_internal_sync(const char *device,
1161 const char *name,
1162 Error **errp)
1163{
1164 BlockdevSnapshotInternal snapshot = {
1165 .device = (char *) device,
1166 .name = (char *) name
1167 };
Eric Blake10f75902016-03-03 09:16:50 -07001168 TransactionAction action = {
1169 .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC,
Eric Blake32bafa82016-03-17 16:48:37 -06001170 .u.blockdev_snapshot_internal_sync.data = &snapshot,
Eric Blake10f75902016-03-03 09:16:50 -07001171 };
1172 blockdev_do_action(&action, errp);
Wenchao Xiaf323bc92013-09-11 14:04:35 +08001173}
1174
Wenchao Xia44e3e052013-09-11 14:04:36 +08001175SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device,
1176 bool has_id,
1177 const char *id,
1178 bool has_name,
1179 const char *name,
1180 Error **errp)
1181{
Fam Zhenga0e85442015-03-02 19:36:48 +08001182 BlockDriverState *bs;
Stefan Hajnoczi4ef39822014-11-19 14:19:42 +00001183 AioContext *aio_context;
Wenchao Xia44e3e052013-09-11 14:04:36 +08001184 QEMUSnapshotInfo sn;
1185 Error *local_err = NULL;
1186 SnapshotInfo *info = NULL;
1187 int ret;
1188
Kevin Wolf2dfb4c02016-06-23 14:20:24 +02001189 bs = qmp_get_root_bs(device, errp);
1190 if (!bs) {
Wenchao Xia44e3e052013-09-11 14:04:36 +08001191 return NULL;
1192 }
Kevin Wolf2dfb4c02016-06-23 14:20:24 +02001193 aio_context = bdrv_get_aio_context(bs);
Max Reitz5433c242015-10-19 17:53:29 +02001194 aio_context_acquire(aio_context);
Wenchao Xia44e3e052013-09-11 14:04:36 +08001195
1196 if (!has_id) {
1197 id = NULL;
1198 }
1199
1200 if (!has_name) {
1201 name = NULL;
1202 }
1203
1204 if (!id && !name) {
1205 error_setg(errp, "Name or id must be provided");
Max Reitz5433c242015-10-19 17:53:29 +02001206 goto out_aio_context;
Wenchao Xia44e3e052013-09-11 14:04:36 +08001207 }
1208
Stefan Hajnoczi0b928852014-11-19 14:19:43 +00001209 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) {
1210 goto out_aio_context;
1211 }
1212
Wenchao Xia44e3e052013-09-11 14:04:36 +08001213 ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001214 if (local_err) {
Wenchao Xia44e3e052013-09-11 14:04:36 +08001215 error_propagate(errp, local_err);
Stefan Hajnoczi4ef39822014-11-19 14:19:42 +00001216 goto out_aio_context;
Wenchao Xia44e3e052013-09-11 14:04:36 +08001217 }
1218 if (!ret) {
1219 error_setg(errp,
1220 "Snapshot with id '%s' and name '%s' does not exist on "
1221 "device '%s'",
1222 STR_OR_NULL(id), STR_OR_NULL(name), device);
Stefan Hajnoczi4ef39822014-11-19 14:19:42 +00001223 goto out_aio_context;
Wenchao Xia44e3e052013-09-11 14:04:36 +08001224 }
1225
1226 bdrv_snapshot_delete(bs, id, name, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001227 if (local_err) {
Wenchao Xia44e3e052013-09-11 14:04:36 +08001228 error_propagate(errp, local_err);
Stefan Hajnoczi4ef39822014-11-19 14:19:42 +00001229 goto out_aio_context;
Wenchao Xia44e3e052013-09-11 14:04:36 +08001230 }
1231
Stefan Hajnoczi4ef39822014-11-19 14:19:42 +00001232 aio_context_release(aio_context);
1233
Markus Armbruster5839e532014-08-19 10:31:08 +02001234 info = g_new0(SnapshotInfo, 1);
Wenchao Xia44e3e052013-09-11 14:04:36 +08001235 info->id = g_strdup(sn.id_str);
1236 info->name = g_strdup(sn.name);
1237 info->date_nsec = sn.date_nsec;
1238 info->date_sec = sn.date_sec;
1239 info->vm_state_size = sn.vm_state_size;
1240 info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000;
1241 info->vm_clock_sec = sn.vm_clock_nsec / 1000000000;
1242
1243 return info;
Stefan Hajnoczi4ef39822014-11-19 14:19:42 +00001244
1245out_aio_context:
1246 aio_context_release(aio_context);
1247 return NULL;
Wenchao Xia44e3e052013-09-11 14:04:36 +08001248}
Jeff Cody8802d1f2012-02-28 15:54:06 -05001249
John Snow341ebc22015-04-17 19:49:52 -04001250/**
1251 * block_dirty_bitmap_lookup:
1252 * Return a dirty bitmap (if present), after validating
1253 * the node reference and bitmap names.
1254 *
1255 * @node: The name of the BDS node to search for bitmaps
1256 * @name: The name of the bitmap to search for
1257 * @pbs: Output pointer for BDS lookup, if desired. Can be NULL.
1258 * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL.
1259 * @errp: Output pointer for error information. Can be NULL.
1260 *
1261 * @return: A bitmap object on success, or NULL on failure.
1262 */
1263static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node,
1264 const char *name,
1265 BlockDriverState **pbs,
John Snow341ebc22015-04-17 19:49:52 -04001266 Error **errp)
1267{
1268 BlockDriverState *bs;
1269 BdrvDirtyBitmap *bitmap;
John Snow341ebc22015-04-17 19:49:52 -04001270
1271 if (!node) {
1272 error_setg(errp, "Node cannot be NULL");
1273 return NULL;
1274 }
1275 if (!name) {
1276 error_setg(errp, "Bitmap name cannot be NULL");
1277 return NULL;
1278 }
1279 bs = bdrv_lookup_bs(node, node, NULL);
1280 if (!bs) {
1281 error_setg(errp, "Node '%s' not found", node);
1282 return NULL;
1283 }
1284
John Snow341ebc22015-04-17 19:49:52 -04001285 bitmap = bdrv_find_dirty_bitmap(bs, name);
1286 if (!bitmap) {
1287 error_setg(errp, "Dirty bitmap '%s' not found", name);
Paolo Bonzini21198822017-06-05 14:39:03 +02001288 return NULL;
John Snow341ebc22015-04-17 19:49:52 -04001289 }
1290
1291 if (pbs) {
1292 *pbs = bs;
1293 }
John Snow341ebc22015-04-17 19:49:52 -04001294
1295 return bitmap;
John Snow341ebc22015-04-17 19:49:52 -04001296}
1297
Stefan Hajnoczib756b9c2014-11-21 10:48:57 +00001298/* New and old BlockDriverState structs for atomic group operations */
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001299
John Snow50f43f02015-11-05 18:13:09 -05001300typedef struct BlkActionState BlkActionState;
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001301
John Snow50f43f02015-11-05 18:13:09 -05001302/**
1303 * BlkActionOps:
1304 * Table of operations that define an Action.
1305 *
1306 * @instance_size: Size of state struct, in bytes.
1307 * @prepare: Prepare the work, must NOT be NULL.
1308 * @commit: Commit the changes, can be NULL.
1309 * @abort: Abort the changes on fail, can be NULL.
1310 * @clean: Clean up resources after all transaction actions have called
1311 * commit() or abort(). Can be NULL.
1312 *
1313 * Only prepare() may fail. In a single transaction, only one of commit() or
1314 * abort() will be called. clean() will always be called if it is present.
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001315 */
John Snow50f43f02015-11-05 18:13:09 -05001316typedef struct BlkActionOps {
1317 size_t instance_size;
1318 void (*prepare)(BlkActionState *common, Error **errp);
1319 void (*commit)(BlkActionState *common);
1320 void (*abort)(BlkActionState *common);
1321 void (*clean)(BlkActionState *common);
1322} BlkActionOps;
1323
1324/**
1325 * BlkActionState:
1326 * Describes one Action's state within a Transaction.
1327 *
1328 * @action: QAPI-defined enum identifying which Action to perform.
1329 * @ops: Table of ActionOps this Action can perform.
John Snow94d16a62015-11-05 18:13:18 -05001330 * @block_job_txn: Transaction which this action belongs to.
John Snow50f43f02015-11-05 18:13:09 -05001331 * @entry: List membership for all Actions in this Transaction.
1332 *
1333 * This structure must be arranged as first member in a subclassed type,
1334 * assuming that the compiler will also arrange it to the same offsets as the
1335 * base class.
1336 */
1337struct BlkActionState {
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001338 TransactionAction *action;
John Snow50f43f02015-11-05 18:13:09 -05001339 const BlkActionOps *ops;
Kevin Wolf62c9e412018-04-19 16:09:52 +02001340 JobTxn *block_job_txn;
John Snow94d16a62015-11-05 18:13:18 -05001341 TransactionProperties *txn_props;
John Snow50f43f02015-11-05 18:13:09 -05001342 QSIMPLEQ_ENTRY(BlkActionState) entry;
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001343};
1344
Wenchao Xiabbe86012013-09-11 14:04:34 +08001345/* internal snapshot private data */
1346typedef struct InternalSnapshotState {
John Snow50f43f02015-11-05 18:13:09 -05001347 BlkActionState common;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001348 BlockDriverState *bs;
1349 QEMUSnapshotInfo sn;
Fam Zheng507306c2015-10-23 11:08:13 +08001350 bool created;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001351} InternalSnapshotState;
1352
John Snow94d16a62015-11-05 18:13:18 -05001353
1354static int action_check_completion_mode(BlkActionState *s, Error **errp)
1355{
1356 if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) {
1357 error_setg(errp,
1358 "Action '%s' does not support Transaction property "
1359 "completion-mode = %s",
Markus Armbruster977c7362017-08-24 10:46:08 +02001360 TransactionActionKind_str(s->action->type),
1361 ActionCompletionMode_str(s->txn_props->completion_mode));
John Snow94d16a62015-11-05 18:13:18 -05001362 return -1;
1363 }
1364 return 0;
1365}
1366
John Snow50f43f02015-11-05 18:13:09 -05001367static void internal_snapshot_prepare(BlkActionState *common,
Wenchao Xiabbe86012013-09-11 14:04:34 +08001368 Error **errp)
1369{
Markus Armbrusterf70edf92014-04-25 16:50:34 +02001370 Error *local_err = NULL;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001371 const char *device;
1372 const char *name;
1373 BlockDriverState *bs;
1374 QEMUSnapshotInfo old_sn, *sn;
1375 bool ret;
1376 qemu_timeval tv;
1377 BlockdevSnapshotInternal *internal;
1378 InternalSnapshotState *state;
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001379 AioContext *aio_context;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001380 int ret1;
1381
Eric Blake6a8f9662015-10-26 16:34:54 -06001382 g_assert(common->action->type ==
Wenchao Xiabbe86012013-09-11 14:04:34 +08001383 TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC);
Eric Blake32bafa82016-03-17 16:48:37 -06001384 internal = common->action->u.blockdev_snapshot_internal_sync.data;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001385 state = DO_UPCAST(InternalSnapshotState, common, common);
1386
1387 /* 1. parse input */
1388 device = internal->device;
1389 name = internal->name;
1390
1391 /* 2. check for validation */
John Snow94d16a62015-11-05 18:13:18 -05001392 if (action_check_completion_mode(common, errp) < 0) {
1393 return;
1394 }
1395
Kevin Wolf75dfd402016-06-23 14:20:24 +02001396 bs = qmp_get_root_bs(device, errp);
1397 if (!bs) {
Wenchao Xiabbe86012013-09-11 14:04:34 +08001398 return;
1399 }
1400
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001401 aio_context = bdrv_get_aio_context(bs);
1402 aio_context_acquire(aio_context);
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001403
Fam Zheng507306c2015-10-23 11:08:13 +08001404 state->bs = bs;
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001405
1406 /* Paired with .clean() */
Fam Zheng507306c2015-10-23 11:08:13 +08001407 bdrv_drained_begin(bs);
1408
Stefan Hajnoczi3dc7ca32014-11-21 10:49:00 +00001409 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) {
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001410 goto out;
Stefan Hajnoczi3dc7ca32014-11-21 10:49:00 +00001411 }
1412
Wenchao Xiabbe86012013-09-11 14:04:34 +08001413 if (bdrv_is_read_only(bs)) {
Alberto Garcia81e5f782015-04-08 12:29:19 +03001414 error_setg(errp, "Device '%s' is read only", device);
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001415 goto out;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001416 }
1417
1418 if (!bdrv_can_snapshot(bs)) {
Alberto Garcia81e5f782015-04-08 12:29:19 +03001419 error_setg(errp, "Block format '%s' used by device '%s' "
1420 "does not support internal snapshots",
1421 bs->drv->format_name, device);
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001422 goto out;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001423 }
1424
1425 if (!strlen(name)) {
1426 error_setg(errp, "Name is empty");
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001427 goto out;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001428 }
1429
1430 /* check whether a snapshot with name exist */
Markus Armbrusterf70edf92014-04-25 16:50:34 +02001431 ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn,
1432 &local_err);
1433 if (local_err) {
1434 error_propagate(errp, local_err);
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001435 goto out;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001436 } else if (ret) {
1437 error_setg(errp,
1438 "Snapshot with name '%s' already exists on device '%s'",
1439 name, device);
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001440 goto out;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001441 }
1442
1443 /* 3. take the snapshot */
1444 sn = &state->sn;
1445 pstrcpy(sn->name, sizeof(sn->name), name);
1446 qemu_gettimeofday(&tv);
1447 sn->date_sec = tv.tv_sec;
1448 sn->date_nsec = tv.tv_usec * 1000;
1449 sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
1450
1451 ret1 = bdrv_snapshot_create(bs, sn);
1452 if (ret1 < 0) {
1453 error_setg_errno(errp, -ret1,
1454 "Failed to create snapshot '%s' on device '%s'",
1455 name, device);
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001456 goto out;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001457 }
1458
1459 /* 4. succeed, mark a snapshot is created */
Fam Zheng507306c2015-10-23 11:08:13 +08001460 state->created = true;
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001461
1462out:
1463 aio_context_release(aio_context);
Wenchao Xiabbe86012013-09-11 14:04:34 +08001464}
1465
John Snow50f43f02015-11-05 18:13:09 -05001466static void internal_snapshot_abort(BlkActionState *common)
Wenchao Xiabbe86012013-09-11 14:04:34 +08001467{
1468 InternalSnapshotState *state =
1469 DO_UPCAST(InternalSnapshotState, common, common);
1470 BlockDriverState *bs = state->bs;
1471 QEMUSnapshotInfo *sn = &state->sn;
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001472 AioContext *aio_context;
Wenchao Xiabbe86012013-09-11 14:04:34 +08001473 Error *local_error = NULL;
1474
Fam Zheng507306c2015-10-23 11:08:13 +08001475 if (!state->created) {
Wenchao Xiabbe86012013-09-11 14:04:34 +08001476 return;
1477 }
1478
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001479 aio_context = bdrv_get_aio_context(state->bs);
1480 aio_context_acquire(aio_context);
1481
Wenchao Xiabbe86012013-09-11 14:04:34 +08001482 if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) {
Markus Armbrusterc29b77f2015-12-18 16:35:14 +01001483 error_reportf_err(local_error,
1484 "Failed to delete snapshot with id '%s' and "
1485 "name '%s' on device '%s' in abort: ",
1486 sn->id_str, sn->name,
1487 bdrv_get_device_name(bs));
Wenchao Xiabbe86012013-09-11 14:04:34 +08001488 }
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001489
1490 aio_context_release(aio_context);
Wenchao Xiabbe86012013-09-11 14:04:34 +08001491}
1492
John Snow50f43f02015-11-05 18:13:09 -05001493static void internal_snapshot_clean(BlkActionState *common)
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001494{
1495 InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState,
1496 common, common);
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001497 AioContext *aio_context;
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001498
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001499 if (!state->bs) {
1500 return;
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001501 }
Stefan Hajnoczia36e4582017-12-06 14:45:46 +00001502
1503 aio_context = bdrv_get_aio_context(state->bs);
1504 aio_context_acquire(aio_context);
1505
1506 bdrv_drained_end(state->bs);
1507
1508 aio_context_release(aio_context);
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001509}
1510
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001511/* external snapshot private data */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001512typedef struct ExternalSnapshotState {
John Snow50f43f02015-11-05 18:13:09 -05001513 BlkActionState common;
Jeff Cody8802d1f2012-02-28 15:54:06 -05001514 BlockDriverState *old_bs;
1515 BlockDriverState *new_bs;
Kevin Wolf067acf22017-03-02 15:26:18 +01001516 bool overlay_appended;
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001517} ExternalSnapshotState;
Jeff Cody8802d1f2012-02-28 15:54:06 -05001518
John Snow50f43f02015-11-05 18:13:09 -05001519static void external_snapshot_prepare(BlkActionState *common,
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001520 Error **errp)
1521{
Max Reitz5b363932016-05-17 16:41:31 +02001522 int flags = 0;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001523 QDict *options = NULL;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001524 Error *local_err = NULL;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001525 /* Device and node name of the image to generate the snapshot from */
Wenchao Xiae2a31e82013-05-08 18:25:13 +08001526 const char *device;
Benoît Canet0901f672014-01-23 21:31:38 +01001527 const char *node_name;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001528 /* Reference to the new image (for 'blockdev-snapshot') */
1529 const char *snapshot_ref;
1530 /* File name of the new image (for 'blockdev-snapshot-sync') */
Wenchao Xiae2a31e82013-05-08 18:25:13 +08001531 const char *new_image_file;
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001532 ExternalSnapshotState *state =
1533 DO_UPCAST(ExternalSnapshotState, common, common);
Kevin Wolfc8a83e82013-05-13 10:43:43 +02001534 TransactionAction *action = common->action;
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001535 AioContext *aio_context;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001536
Alberto Garcia43de7e22015-10-26 14:27:16 +02001537 /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar
1538 * purpose but a different set of parameters */
1539 switch (action->type) {
1540 case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT:
1541 {
Eric Blake32bafa82016-03-17 16:48:37 -06001542 BlockdevSnapshot *s = action->u.blockdev_snapshot.data;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001543 device = s->node;
1544 node_name = s->node;
1545 new_image_file = NULL;
1546 snapshot_ref = s->overlay;
1547 }
1548 break;
1549 case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC:
1550 {
Eric Blake32bafa82016-03-17 16:48:37 -06001551 BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001552 device = s->has_device ? s->device : NULL;
1553 node_name = s->has_node_name ? s->node_name : NULL;
1554 new_image_file = s->snapshot_file;
1555 snapshot_ref = NULL;
1556 }
1557 break;
1558 default:
1559 g_assert_not_reached();
Wenchao Xiae2a31e82013-05-08 18:25:13 +08001560 }
1561
1562 /* start processing */
John Snow94d16a62015-11-05 18:13:18 -05001563 if (action_check_completion_mode(common, errp) < 0) {
1564 return;
1565 }
1566
Alberto Garcia43de7e22015-10-26 14:27:16 +02001567 state->old_bs = bdrv_lookup_bs(device, node_name, errp);
1568 if (!state->old_bs) {
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001569 return;
1570 }
1571
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001572 aio_context = bdrv_get_aio_context(state->old_bs);
1573 aio_context_acquire(aio_context);
1574
1575 /* Paired with .clean() */
Fam Zhengda763e82015-10-23 11:08:10 +08001576 bdrv_drained_begin(state->old_bs);
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001577
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001578 if (!bdrv_is_inserted(state->old_bs)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01001579 error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001580 goto out;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001581 }
1582
Fam Zheng3718d8a2014-05-23 21:29:43 +08001583 if (bdrv_op_is_blocked(state->old_bs,
1584 BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) {
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001585 goto out;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001586 }
1587
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001588 if (!bdrv_is_read_only(state->old_bs)) {
1589 if (bdrv_flush(state->old_bs)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01001590 error_setg(errp, QERR_IO_ERROR);
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001591 goto out;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001592 }
1593 }
1594
Benoît Canet212a5a82014-01-23 21:31:36 +01001595 if (!bdrv_is_first_non_filter(state->old_bs)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01001596 error_setg(errp, QERR_FEATURE_DISABLED, "snapshot");
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001597 goto out;
Benoît Canetf6186f42013-10-02 14:33:48 +02001598 }
1599
Alberto Garcia43de7e22015-10-26 14:27:16 +02001600 if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) {
Eric Blake32bafa82016-03-17 16:48:37 -06001601 BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001602 const char *format = s->has_format ? s->format : "qcow2";
1603 enum NewImageMode mode;
1604 const char *snapshot_node_name =
1605 s->has_snapshot_node_name ? s->snapshot_node_name : NULL;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001606
Alberto Garcia43de7e22015-10-26 14:27:16 +02001607 if (node_name && !snapshot_node_name) {
1608 error_setg(errp, "New snapshot node name missing");
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001609 goto out;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001610 }
Alberto Garcia43de7e22015-10-26 14:27:16 +02001611
1612 if (snapshot_node_name &&
1613 bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) {
1614 error_setg(errp, "New snapshot node name already in use");
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001615 goto out;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001616 }
1617
1618 flags = state->old_bs->open_flags;
John Snow2a32c6e2017-07-17 20:34:21 -04001619 flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_COPY_ON_READ);
1620 flags |= BDRV_O_NO_BACKING;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001621
1622 /* create new image w/backing file */
1623 mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS;
1624 if (mode != NEW_IMAGE_MODE_EXISTING) {
Kevin Wolff86b8b52016-03-02 12:16:44 +01001625 int64_t size = bdrv_getlength(state->old_bs);
1626 if (size < 0) {
1627 error_setg_errno(errp, -size, "bdrv_getlength failed");
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001628 goto out;
Kevin Wolff86b8b52016-03-02 12:16:44 +01001629 }
Alberto Garcia43de7e22015-10-26 14:27:16 +02001630 bdrv_img_create(new_image_file, format,
1631 state->old_bs->filename,
1632 state->old_bs->drv->format_name,
Fam Zheng92172832017-04-21 20:27:01 +08001633 NULL, size, flags, false, &local_err);
Alberto Garcia43de7e22015-10-26 14:27:16 +02001634 if (local_err) {
1635 error_propagate(errp, local_err);
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001636 goto out;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001637 }
1638 }
1639
1640 options = qdict_new();
1641 if (s->has_snapshot_node_name) {
Eric Blake46f5ac22017-04-27 16:58:17 -05001642 qdict_put_str(options, "node-name", snapshot_node_name);
Alberto Garcia43de7e22015-10-26 14:27:16 +02001643 }
Eric Blake46f5ac22017-04-27 16:58:17 -05001644 qdict_put_str(options, "driver", format);
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001645 }
1646
Max Reitz5b363932016-05-17 16:41:31 +02001647 state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags,
1648 errp);
Max Reitzf67503e2014-02-18 18:33:05 +01001649 /* We will manually add the backing_hd field to the bs later */
Max Reitz5b363932016-05-17 16:41:31 +02001650 if (!state->new_bs) {
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001651 goto out;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001652 }
1653
Kevin Wolf1f0c4612016-03-22 18:38:44 +01001654 if (bdrv_has_blk(state->new_bs)) {
Kevin Wolfe467da72016-09-21 14:56:09 +02001655 error_setg(errp, "The snapshot is already in use");
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001656 goto out;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001657 }
1658
1659 if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT,
1660 errp)) {
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001661 goto out;
Alberto Garcia43de7e22015-10-26 14:27:16 +02001662 }
1663
1664 if (state->new_bs->backing != NULL) {
1665 error_setg(errp, "The snapshot already has a backing image");
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001666 goto out;
Alberto Garcia08b24cf2015-11-03 12:32:35 +02001667 }
1668
1669 if (!state->new_bs->drv->supports_backing) {
1670 error_setg(errp, "The snapshot does not support backing images");
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001671 goto out;
Kevin Wolfb2c28322017-02-20 12:46:42 +01001672 }
1673
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001674 bdrv_set_aio_context(state->new_bs, aio_context);
Fam Zhengc26a5ab2017-04-07 14:54:09 +08001675
Kevin Wolfb2c28322017-02-20 12:46:42 +01001676 /* This removes our old bs and adds the new bs. This is an operation that
1677 * can fail, so we need to do it in .prepare; undoing it for abort is
1678 * always possible. */
1679 bdrv_ref(state->new_bs);
1680 bdrv_append(state->new_bs, state->old_bs, &local_err);
1681 if (local_err) {
1682 error_propagate(errp, local_err);
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001683 goto out;
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001684 }
Kevin Wolf067acf22017-03-02 15:26:18 +01001685 state->overlay_appended = true;
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001686
1687out:
1688 aio_context_release(aio_context);
Wenchao Xia9b9877e2013-05-08 18:25:12 +08001689}
1690
John Snow50f43f02015-11-05 18:13:09 -05001691static void external_snapshot_commit(BlkActionState *common)
Wenchao Xia3b0047e2013-05-08 18:25:14 +08001692{
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001693 ExternalSnapshotState *state =
1694 DO_UPCAST(ExternalSnapshotState, common, common);
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001695 AioContext *aio_context;
1696
1697 aio_context = bdrv_get_aio_context(state->old_bs);
1698 aio_context_acquire(aio_context);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08001699
Wenchao Xia3b0047e2013-05-08 18:25:14 +08001700 /* We don't need (or want) to use the transactional
1701 * bdrv_reopen_multiple() across all the entries at once, because we
1702 * don't want to abort all of them if one of them fails the reopen */
Paolo Bonzinid3faa132017-06-05 14:38:50 +02001703 if (!atomic_read(&state->old_bs->copy_on_read)) {
Kevin Wolf4c844982016-02-29 13:12:26 +01001704 bdrv_reopen(state->old_bs, state->old_bs->open_flags & ~BDRV_O_RDWR,
1705 NULL);
1706 }
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001707
1708 aio_context_release(aio_context);
Wenchao Xia3b0047e2013-05-08 18:25:14 +08001709}
1710
John Snow50f43f02015-11-05 18:13:09 -05001711static void external_snapshot_abort(BlkActionState *common)
Wenchao Xia96b86bf2013-05-08 18:25:15 +08001712{
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02001713 ExternalSnapshotState *state =
1714 DO_UPCAST(ExternalSnapshotState, common, common);
1715 if (state->new_bs) {
Kevin Wolf067acf22017-03-02 15:26:18 +01001716 if (state->overlay_appended) {
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001717 AioContext *aio_context;
1718
1719 aio_context = bdrv_get_aio_context(state->old_bs);
1720 aio_context_acquire(aio_context);
1721
Jeff Cody719fc282017-06-07 09:55:22 -04001722 bdrv_ref(state->old_bs); /* we can't let bdrv_set_backind_hd()
1723 close state->old_bs; we need it */
1724 bdrv_set_backing_hd(state->new_bs, NULL, &error_abort);
Kevin Wolf5fe31c22017-03-06 16:20:51 +01001725 bdrv_replace_node(state->new_bs, state->old_bs, &error_abort);
Jeff Cody719fc282017-06-07 09:55:22 -04001726 bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001727
1728 aio_context_release(aio_context);
Kevin Wolfb2c28322017-02-20 12:46:42 +01001729 }
Wenchao Xia96b86bf2013-05-08 18:25:15 +08001730 }
Fam Zhengda763e82015-10-23 11:08:10 +08001731}
1732
John Snow50f43f02015-11-05 18:13:09 -05001733static void external_snapshot_clean(BlkActionState *common)
Fam Zhengda763e82015-10-23 11:08:10 +08001734{
1735 ExternalSnapshotState *state =
1736 DO_UPCAST(ExternalSnapshotState, common, common);
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001737 AioContext *aio_context;
1738
1739 if (!state->old_bs) {
1740 return;
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001741 }
Stefan Hajnoczi2d24b602017-12-06 14:45:43 +00001742
1743 aio_context = bdrv_get_aio_context(state->old_bs);
1744 aio_context_acquire(aio_context);
1745
1746 bdrv_drained_end(state->old_bs);
1747 bdrv_unref(state->new_bs);
1748
1749 aio_context_release(aio_context);
Wenchao Xia96b86bf2013-05-08 18:25:15 +08001750}
1751
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001752typedef struct DriveBackupState {
John Snow50f43f02015-11-05 18:13:09 -05001753 BlkActionState common;
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001754 BlockDriverState *bs;
1755 BlockJob *job;
1756} DriveBackupState;
1757
Kevin Wolf62c9e412018-04-19 16:09:52 +02001758static BlockJob *do_drive_backup(DriveBackup *backup, JobTxn *txn,
Pavel Butsykin81206a82016-07-22 11:17:50 +03001759 Error **errp);
John Snow78f51fd2015-11-05 18:13:17 -05001760
John Snow50f43f02015-11-05 18:13:09 -05001761static void drive_backup_prepare(BlkActionState *common, Error **errp)
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001762{
1763 DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
Kevin Wolfb7e4fa22016-06-23 14:20:24 +02001764 BlockDriverState *bs;
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001765 DriveBackup *backup;
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001766 AioContext *aio_context;
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001767 Error *local_err = NULL;
1768
Eric Blake6a8f9662015-10-26 16:34:54 -06001769 assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP);
Eric Blake32bafa82016-03-17 16:48:37 -06001770 backup = common->action->u.drive_backup.data;
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001771
Kevin Wolfb7e4fa22016-06-23 14:20:24 +02001772 bs = qmp_get_root_bs(backup->device, errp);
1773 if (!bs) {
Fam Zheng1fdd4b72015-10-23 11:08:11 +08001774 return;
1775 }
1776
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001777 aio_context = bdrv_get_aio_context(bs);
1778 aio_context_acquire(aio_context);
1779
1780 /* Paired with .clean() */
Kevin Wolfb7e4fa22016-06-23 14:20:24 +02001781 bdrv_drained_begin(bs);
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001782
Kevin Wolfb7e4fa22016-06-23 14:20:24 +02001783 state->bs = bs;
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001784
John Snow111049a2016-11-08 01:50:38 -05001785 state->job = do_drive_backup(backup, common->block_job_txn, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01001786 if (local_err) {
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001787 error_propagate(errp, local_err);
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001788 goto out;
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001789 }
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001790
1791out:
1792 aio_context_release(aio_context);
John Snow111049a2016-11-08 01:50:38 -05001793}
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001794
John Snow111049a2016-11-08 01:50:38 -05001795static void drive_backup_commit(BlkActionState *common)
1796{
1797 DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001798 AioContext *aio_context;
1799
1800 aio_context = bdrv_get_aio_context(state->bs);
1801 aio_context_acquire(aio_context);
1802
John Snow111049a2016-11-08 01:50:38 -05001803 assert(state->job);
Kevin Wolfda01ff72018-04-13 17:31:02 +02001804 job_start(&state->job->job);
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001805
1806 aio_context_release(aio_context);
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001807}
1808
John Snow50f43f02015-11-05 18:13:09 -05001809static void drive_backup_abort(BlkActionState *common)
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001810{
1811 DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001812
John Snow111049a2016-11-08 01:50:38 -05001813 if (state->job) {
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001814 AioContext *aio_context;
1815
1816 aio_context = bdrv_get_aio_context(state->bs);
1817 aio_context_acquire(aio_context);
1818
Kevin Wolf3d70ff52018-04-24 16:13:52 +02001819 job_cancel_sync(&state->job->job);
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001820
1821 aio_context_release(aio_context);
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02001822 }
1823}
1824
John Snow50f43f02015-11-05 18:13:09 -05001825static void drive_backup_clean(BlkActionState *common)
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001826{
1827 DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common);
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001828 AioContext *aio_context;
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001829
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001830 if (!state->bs) {
1831 return;
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001832 }
Stefan Hajnoczi66d56052017-12-06 14:45:44 +00001833
1834 aio_context = bdrv_get_aio_context(state->bs);
1835 aio_context_acquire(aio_context);
1836
1837 bdrv_drained_end(state->bs);
1838
1839 aio_context_release(aio_context);
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00001840}
1841
Fam Zhengbd8baec2014-12-18 18:37:06 +08001842typedef struct BlockdevBackupState {
John Snow50f43f02015-11-05 18:13:09 -05001843 BlkActionState common;
Fam Zhengbd8baec2014-12-18 18:37:06 +08001844 BlockDriverState *bs;
1845 BlockJob *job;
Fam Zhengbd8baec2014-12-18 18:37:06 +08001846} BlockdevBackupState;
1847
Kevin Wolf62c9e412018-04-19 16:09:52 +02001848static BlockJob *do_blockdev_backup(BlockdevBackup *backup, JobTxn *txn,
John Snow111049a2016-11-08 01:50:38 -05001849 Error **errp);
John Snow78f51fd2015-11-05 18:13:17 -05001850
John Snow50f43f02015-11-05 18:13:09 -05001851static void blockdev_backup_prepare(BlkActionState *common, Error **errp)
Fam Zhengbd8baec2014-12-18 18:37:06 +08001852{
1853 BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
1854 BlockdevBackup *backup;
Kevin Wolfcef34ee2016-06-23 14:20:24 +02001855 BlockDriverState *bs, *target;
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001856 AioContext *aio_context;
Fam Zhengbd8baec2014-12-18 18:37:06 +08001857 Error *local_err = NULL;
1858
Eric Blake6a8f9662015-10-26 16:34:54 -06001859 assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP);
Eric Blake32bafa82016-03-17 16:48:37 -06001860 backup = common->action->u.blockdev_backup.data;
Fam Zhengbd8baec2014-12-18 18:37:06 +08001861
Vladimir Sementsov-Ogievskiy930fe172018-07-02 15:46:29 -04001862 bs = bdrv_lookup_bs(backup->device, backup->device, errp);
Kevin Wolfcef34ee2016-06-23 14:20:24 +02001863 if (!bs) {
Fam Zhengff52bf32015-10-23 11:08:12 +08001864 return;
1865 }
1866
Kevin Wolf39d990a2016-08-02 19:22:04 +02001867 target = bdrv_lookup_bs(backup->target, backup->target, errp);
Max Reitz5433c242015-10-19 17:53:29 +02001868 if (!target) {
Fam Zhengbd8baec2014-12-18 18:37:06 +08001869 return;
1870 }
1871
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001872 aio_context = bdrv_get_aio_context(bs);
1873 if (aio_context != bdrv_get_aio_context(target)) {
Fam Zhengbd8baec2014-12-18 18:37:06 +08001874 error_setg(errp, "Backup between two IO threads is not implemented");
1875 return;
1876 }
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001877 aio_context_acquire(aio_context);
Kevin Wolfcef34ee2016-06-23 14:20:24 +02001878 state->bs = bs;
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001879
1880 /* Paired with .clean() */
Fam Zhengff52bf32015-10-23 11:08:12 +08001881 bdrv_drained_begin(state->bs);
Fam Zhengbd8baec2014-12-18 18:37:06 +08001882
John Snow111049a2016-11-08 01:50:38 -05001883 state->job = do_blockdev_backup(backup, common->block_job_txn, &local_err);
Fam Zhengbd8baec2014-12-18 18:37:06 +08001884 if (local_err) {
1885 error_propagate(errp, local_err);
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001886 goto out;
Fam Zhengbd8baec2014-12-18 18:37:06 +08001887 }
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001888
1889out:
1890 aio_context_release(aio_context);
John Snow111049a2016-11-08 01:50:38 -05001891}
Fam Zhengbd8baec2014-12-18 18:37:06 +08001892
John Snow111049a2016-11-08 01:50:38 -05001893static void blockdev_backup_commit(BlkActionState *common)
1894{
1895 BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001896 AioContext *aio_context;
1897
1898 aio_context = bdrv_get_aio_context(state->bs);
1899 aio_context_acquire(aio_context);
1900
John Snow111049a2016-11-08 01:50:38 -05001901 assert(state->job);
Kevin Wolfda01ff72018-04-13 17:31:02 +02001902 job_start(&state->job->job);
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001903
1904 aio_context_release(aio_context);
Fam Zhengbd8baec2014-12-18 18:37:06 +08001905}
1906
John Snow50f43f02015-11-05 18:13:09 -05001907static void blockdev_backup_abort(BlkActionState *common)
Fam Zhengbd8baec2014-12-18 18:37:06 +08001908{
1909 BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
Fam Zhengbd8baec2014-12-18 18:37:06 +08001910
John Snow111049a2016-11-08 01:50:38 -05001911 if (state->job) {
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001912 AioContext *aio_context;
1913
1914 aio_context = bdrv_get_aio_context(state->bs);
1915 aio_context_acquire(aio_context);
1916
Kevin Wolf3d70ff52018-04-24 16:13:52 +02001917 job_cancel_sync(&state->job->job);
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001918
1919 aio_context_release(aio_context);
Fam Zhengbd8baec2014-12-18 18:37:06 +08001920 }
1921}
1922
John Snow50f43f02015-11-05 18:13:09 -05001923static void blockdev_backup_clean(BlkActionState *common)
Fam Zhengbd8baec2014-12-18 18:37:06 +08001924{
1925 BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common);
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001926 AioContext *aio_context;
Fam Zhengbd8baec2014-12-18 18:37:06 +08001927
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001928 if (!state->bs) {
1929 return;
Fam Zhengbd8baec2014-12-18 18:37:06 +08001930 }
Stefan Hajnocziedd5ade2017-12-06 14:45:45 +00001931
1932 aio_context = bdrv_get_aio_context(state->bs);
1933 aio_context_acquire(aio_context);
1934
1935 bdrv_drained_end(state->bs);
1936
1937 aio_context_release(aio_context);
Fam Zhengbd8baec2014-12-18 18:37:06 +08001938}
1939
Fam Zhengdf9a6812015-11-09 18:16:54 +08001940typedef struct BlockDirtyBitmapState {
John Snow50f43f02015-11-05 18:13:09 -05001941 BlkActionState common;
Fam Zhengdf9a6812015-11-09 18:16:54 +08001942 BdrvDirtyBitmap *bitmap;
1943 BlockDriverState *bs;
Fam Zhengdf9a6812015-11-09 18:16:54 +08001944 HBitmap *backup;
1945 bool prepared;
Vladimir Sementsov-Ogievskiyc6490442018-06-11 14:53:32 -04001946 bool was_enabled;
Fam Zhengdf9a6812015-11-09 18:16:54 +08001947} BlockDirtyBitmapState;
1948
John Snow50f43f02015-11-05 18:13:09 -05001949static void block_dirty_bitmap_add_prepare(BlkActionState *common,
Fam Zhengdf9a6812015-11-09 18:16:54 +08001950 Error **errp)
1951{
1952 Error *local_err = NULL;
1953 BlockDirtyBitmapAdd *action;
1954 BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
1955 common, common);
1956
John Snow94d16a62015-11-05 18:13:18 -05001957 if (action_check_completion_mode(common, errp) < 0) {
1958 return;
1959 }
1960
Eric Blake32bafa82016-03-17 16:48:37 -06001961 action = common->action->u.block_dirty_bitmap_add.data;
Fam Zhengdf9a6812015-11-09 18:16:54 +08001962 /* AIO context taken and released within qmp_block_dirty_bitmap_add */
1963 qmp_block_dirty_bitmap_add(action->node, action->name,
1964 action->has_granularity, action->granularity,
Vladimir Sementsov-Ogievskiyfd5ae4c2017-06-28 15:05:23 +03001965 action->has_persistent, action->persistent,
Vladimir Sementsov-Ogievskiyeb738bb2017-06-28 15:05:24 +03001966 action->has_autoload, action->autoload,
Vladimir Sementsov-Ogievskiya6e2ca52018-06-11 14:53:32 -04001967 action->has_x_disabled, action->x_disabled,
Fam Zhengdf9a6812015-11-09 18:16:54 +08001968 &local_err);
1969
1970 if (!local_err) {
1971 state->prepared = true;
1972 } else {
1973 error_propagate(errp, local_err);
1974 }
1975}
1976
John Snow50f43f02015-11-05 18:13:09 -05001977static void block_dirty_bitmap_add_abort(BlkActionState *common)
Fam Zhengdf9a6812015-11-09 18:16:54 +08001978{
1979 BlockDirtyBitmapAdd *action;
1980 BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
1981 common, common);
1982
Eric Blake32bafa82016-03-17 16:48:37 -06001983 action = common->action->u.block_dirty_bitmap_add.data;
Fam Zhengdf9a6812015-11-09 18:16:54 +08001984 /* Should not be able to fail: IF the bitmap was added via .prepare(),
1985 * then the node reference and bitmap name must have been valid.
1986 */
1987 if (state->prepared) {
1988 qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort);
1989 }
1990}
1991
John Snow50f43f02015-11-05 18:13:09 -05001992static void block_dirty_bitmap_clear_prepare(BlkActionState *common,
Fam Zhengdf9a6812015-11-09 18:16:54 +08001993 Error **errp)
1994{
1995 BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
1996 common, common);
1997 BlockDirtyBitmap *action;
1998
John Snow94d16a62015-11-05 18:13:18 -05001999 if (action_check_completion_mode(common, errp) < 0) {
2000 return;
2001 }
2002
Eric Blake32bafa82016-03-17 16:48:37 -06002003 action = common->action->u.block_dirty_bitmap_clear.data;
Fam Zhengdf9a6812015-11-09 18:16:54 +08002004 state->bitmap = block_dirty_bitmap_lookup(action->node,
2005 action->name,
2006 &state->bs,
Fam Zhengdf9a6812015-11-09 18:16:54 +08002007 errp);
2008 if (!state->bitmap) {
2009 return;
2010 }
2011
2012 if (bdrv_dirty_bitmap_frozen(state->bitmap)) {
2013 error_setg(errp, "Cannot modify a frozen bitmap");
2014 return;
Vladimir Sementsov-Ogievskiy4f43e952018-03-13 15:34:00 -04002015 } else if (bdrv_dirty_bitmap_qmp_locked(state->bitmap)) {
2016 error_setg(errp, "Cannot modify a locked bitmap");
2017 return;
Fam Zhengdf9a6812015-11-09 18:16:54 +08002018 } else if (!bdrv_dirty_bitmap_enabled(state->bitmap)) {
2019 error_setg(errp, "Cannot clear a disabled bitmap");
2020 return;
Vladimir Sementsov-Ogievskiyd6883bc2017-06-28 15:05:10 +03002021 } else if (bdrv_dirty_bitmap_readonly(state->bitmap)) {
2022 error_setg(errp, "Cannot clear a readonly bitmap");
2023 return;
Fam Zhengdf9a6812015-11-09 18:16:54 +08002024 }
2025
2026 bdrv_clear_dirty_bitmap(state->bitmap, &state->backup);
Fam Zhengdf9a6812015-11-09 18:16:54 +08002027}
2028
John Snow50f43f02015-11-05 18:13:09 -05002029static void block_dirty_bitmap_clear_abort(BlkActionState *common)
Fam Zhengdf9a6812015-11-09 18:16:54 +08002030{
2031 BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
2032 common, common);
2033
John Snow184dd9c2017-03-15 17:28:11 -04002034 if (state->backup) {
2035 bdrv_undo_clear_dirty_bitmap(state->bitmap, state->backup);
2036 }
Fam Zhengdf9a6812015-11-09 18:16:54 +08002037}
2038
John Snow50f43f02015-11-05 18:13:09 -05002039static void block_dirty_bitmap_clear_commit(BlkActionState *common)
Fam Zhengdf9a6812015-11-09 18:16:54 +08002040{
2041 BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
2042 common, common);
2043
2044 hbitmap_free(state->backup);
2045}
2046
Vladimir Sementsov-Ogievskiyc6490442018-06-11 14:53:32 -04002047static void block_dirty_bitmap_enable_prepare(BlkActionState *common,
2048 Error **errp)
2049{
2050 BlockDirtyBitmap *action;
2051 BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
2052 common, common);
2053
2054 if (action_check_completion_mode(common, errp) < 0) {
2055 return;
2056 }
2057
2058 action = common->action->u.x_block_dirty_bitmap_enable.data;
2059 state->bitmap = block_dirty_bitmap_lookup(action->node,
2060 action->name,
2061 NULL,
2062 errp);
2063 if (!state->bitmap) {
2064 return;
2065 }
2066
2067 state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap);
2068 bdrv_enable_dirty_bitmap(state->bitmap);
2069}
2070
2071static void block_dirty_bitmap_enable_abort(BlkActionState *common)
2072{
2073 BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
2074 common, common);
2075
2076 if (!state->was_enabled) {
2077 bdrv_disable_dirty_bitmap(state->bitmap);
2078 }
2079}
2080
2081static void block_dirty_bitmap_disable_prepare(BlkActionState *common,
2082 Error **errp)
2083{
2084 BlockDirtyBitmap *action;
2085 BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
2086 common, common);
2087
2088 if (action_check_completion_mode(common, errp) < 0) {
2089 return;
2090 }
2091
2092 action = common->action->u.x_block_dirty_bitmap_disable.data;
2093 state->bitmap = block_dirty_bitmap_lookup(action->node,
2094 action->name,
2095 NULL,
2096 errp);
2097 if (!state->bitmap) {
2098 return;
2099 }
2100
2101 state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap);
2102 bdrv_disable_dirty_bitmap(state->bitmap);
2103}
2104
2105static void block_dirty_bitmap_disable_abort(BlkActionState *common)
2106{
2107 BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState,
2108 common, common);
2109
2110 if (state->was_enabled) {
2111 bdrv_enable_dirty_bitmap(state->bitmap);
2112 }
2113}
2114
John Snow50f43f02015-11-05 18:13:09 -05002115static void abort_prepare(BlkActionState *common, Error **errp)
Stefan Hajnoczi78b18b72013-06-24 17:13:18 +02002116{
2117 error_setg(errp, "Transaction aborted using Abort action");
2118}
2119
John Snow50f43f02015-11-05 18:13:09 -05002120static void abort_commit(BlkActionState *common)
Stefan Hajnoczi78b18b72013-06-24 17:13:18 +02002121{
Stefan Weildfc6f862013-07-25 18:21:28 +02002122 g_assert_not_reached(); /* this action never succeeds */
Stefan Hajnoczi78b18b72013-06-24 17:13:18 +02002123}
2124
John Snow50f43f02015-11-05 18:13:09 -05002125static const BlkActionOps actions[] = {
Alberto Garcia43de7e22015-10-26 14:27:16 +02002126 [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = {
2127 .instance_size = sizeof(ExternalSnapshotState),
2128 .prepare = external_snapshot_prepare,
2129 .commit = external_snapshot_commit,
2130 .abort = external_snapshot_abort,
Alberto Garcia4ad6f3d2015-11-13 15:00:24 +02002131 .clean = external_snapshot_clean,
Alberto Garcia43de7e22015-10-26 14:27:16 +02002132 },
Kevin Wolfc8a83e82013-05-13 10:43:43 +02002133 [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = {
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02002134 .instance_size = sizeof(ExternalSnapshotState),
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08002135 .prepare = external_snapshot_prepare,
2136 .commit = external_snapshot_commit,
2137 .abort = external_snapshot_abort,
Fam Zhengda763e82015-10-23 11:08:10 +08002138 .clean = external_snapshot_clean,
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08002139 },
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02002140 [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = {
2141 .instance_size = sizeof(DriveBackupState),
2142 .prepare = drive_backup_prepare,
John Snow111049a2016-11-08 01:50:38 -05002143 .commit = drive_backup_commit,
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02002144 .abort = drive_backup_abort,
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00002145 .clean = drive_backup_clean,
Stefan Hajnoczi3037f362013-06-24 17:13:17 +02002146 },
Fam Zhengbd8baec2014-12-18 18:37:06 +08002147 [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = {
2148 .instance_size = sizeof(BlockdevBackupState),
2149 .prepare = blockdev_backup_prepare,
John Snow111049a2016-11-08 01:50:38 -05002150 .commit = blockdev_backup_commit,
Fam Zhengbd8baec2014-12-18 18:37:06 +08002151 .abort = blockdev_backup_abort,
2152 .clean = blockdev_backup_clean,
2153 },
Stefan Hajnoczi78b18b72013-06-24 17:13:18 +02002154 [TRANSACTION_ACTION_KIND_ABORT] = {
John Snow50f43f02015-11-05 18:13:09 -05002155 .instance_size = sizeof(BlkActionState),
Stefan Hajnoczi78b18b72013-06-24 17:13:18 +02002156 .prepare = abort_prepare,
2157 .commit = abort_commit,
2158 },
Wenchao Xiabbe86012013-09-11 14:04:34 +08002159 [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = {
2160 .instance_size = sizeof(InternalSnapshotState),
2161 .prepare = internal_snapshot_prepare,
2162 .abort = internal_snapshot_abort,
Stefan Hajnoczi5d6e96e2014-11-21 10:48:59 +00002163 .clean = internal_snapshot_clean,
Wenchao Xiabbe86012013-09-11 14:04:34 +08002164 },
Fam Zhengdf9a6812015-11-09 18:16:54 +08002165 [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = {
2166 .instance_size = sizeof(BlockDirtyBitmapState),
2167 .prepare = block_dirty_bitmap_add_prepare,
2168 .abort = block_dirty_bitmap_add_abort,
2169 },
2170 [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = {
2171 .instance_size = sizeof(BlockDirtyBitmapState),
2172 .prepare = block_dirty_bitmap_clear_prepare,
2173 .commit = block_dirty_bitmap_clear_commit,
2174 .abort = block_dirty_bitmap_clear_abort,
Vladimir Sementsov-Ogievskiyc6490442018-06-11 14:53:32 -04002175 },
2176 [TRANSACTION_ACTION_KIND_X_BLOCK_DIRTY_BITMAP_ENABLE] = {
2177 .instance_size = sizeof(BlockDirtyBitmapState),
2178 .prepare = block_dirty_bitmap_enable_prepare,
2179 .abort = block_dirty_bitmap_enable_abort,
2180 },
2181 [TRANSACTION_ACTION_KIND_X_BLOCK_DIRTY_BITMAP_DISABLE] = {
2182 .instance_size = sizeof(BlockDirtyBitmapState),
2183 .prepare = block_dirty_bitmap_disable_prepare,
2184 .abort = block_dirty_bitmap_disable_abort,
2185 }
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08002186};
2187
John Snow94d16a62015-11-05 18:13:18 -05002188/**
2189 * Allocate a TransactionProperties structure if necessary, and fill
2190 * that structure with desired defaults if they are unset.
2191 */
2192static TransactionProperties *get_transaction_properties(
2193 TransactionProperties *props)
2194{
2195 if (!props) {
2196 props = g_new0(TransactionProperties, 1);
2197 }
2198
2199 if (!props->has_completion_mode) {
2200 props->has_completion_mode = true;
2201 props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL;
2202 }
2203
2204 return props;
2205}
2206
Jeff Cody8802d1f2012-02-28 15:54:06 -05002207/*
Stefan Hajnoczib756b9c2014-11-21 10:48:57 +00002208 * 'Atomic' group operations. The operations are performed as a set, and if
2209 * any fail then we roll back all operations in the group.
Jeff Cody8802d1f2012-02-28 15:54:06 -05002210 */
John Snow94d16a62015-11-05 18:13:18 -05002211void qmp_transaction(TransactionActionList *dev_list,
2212 bool has_props,
2213 struct TransactionProperties *props,
2214 Error **errp)
Jeff Cody8802d1f2012-02-28 15:54:06 -05002215{
Kevin Wolfc8a83e82013-05-13 10:43:43 +02002216 TransactionActionList *dev_entry = dev_list;
Kevin Wolf62c9e412018-04-19 16:09:52 +02002217 JobTxn *block_job_txn = NULL;
John Snow50f43f02015-11-05 18:13:09 -05002218 BlkActionState *state, *next;
Luiz Capitulino43e17042012-11-30 10:52:07 -02002219 Error *local_err = NULL;
Jeff Cody8802d1f2012-02-28 15:54:06 -05002220
John Snow50f43f02015-11-05 18:13:09 -05002221 QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states;
Jeff Cody8802d1f2012-02-28 15:54:06 -05002222 QSIMPLEQ_INIT(&snap_bdrv_states);
2223
John Snow94d16a62015-11-05 18:13:18 -05002224 /* Does this transaction get canceled as a group on failure?
Kevin Wolf62c9e412018-04-19 16:09:52 +02002225 * If not, we don't really need to make a JobTxn.
John Snow94d16a62015-11-05 18:13:18 -05002226 */
2227 props = get_transaction_properties(props);
2228 if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) {
Kevin Wolf7eaa8fb2018-04-23 16:06:26 +02002229 block_job_txn = job_txn_new();
John Snow94d16a62015-11-05 18:13:18 -05002230 }
2231
Stefan Hajnoczib756b9c2014-11-21 10:48:57 +00002232 /* drain all i/o before any operations */
Jeff Cody8802d1f2012-02-28 15:54:06 -05002233 bdrv_drain_all();
2234
Stefan Hajnoczib756b9c2014-11-21 10:48:57 +00002235 /* We don't do anything in this loop that commits us to the operations */
Jeff Cody8802d1f2012-02-28 15:54:06 -05002236 while (NULL != dev_entry) {
Kevin Wolfc8a83e82013-05-13 10:43:43 +02002237 TransactionAction *dev_info = NULL;
John Snow50f43f02015-11-05 18:13:09 -05002238 const BlkActionOps *ops;
Paolo Bonzini52e7c242012-03-06 18:55:57 +01002239
Jeff Cody8802d1f2012-02-28 15:54:06 -05002240 dev_info = dev_entry->value;
2241 dev_entry = dev_entry->next;
2242
Eric Blake6a8f9662015-10-26 16:34:54 -06002243 assert(dev_info->type < ARRAY_SIZE(actions));
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08002244
Eric Blake6a8f9662015-10-26 16:34:54 -06002245 ops = &actions[dev_info->type];
Max Reitzaa3fe712013-09-12 14:57:27 +02002246 assert(ops->instance_size > 0);
2247
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02002248 state = g_malloc0(ops->instance_size);
2249 state->ops = ops;
2250 state->action = dev_info;
John Snow94d16a62015-11-05 18:13:18 -05002251 state->block_job_txn = block_job_txn;
2252 state->txn_props = props;
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02002253 QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry);
Jeff Cody8802d1f2012-02-28 15:54:06 -05002254
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02002255 state->ops->prepare(state, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01002256 if (local_err) {
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08002257 error_propagate(errp, local_err);
2258 goto delete_and_fail;
Paolo Bonzini52e7c242012-03-06 18:55:57 +01002259 }
Jeff Cody8802d1f2012-02-28 15:54:06 -05002260 }
2261
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02002262 QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) {
Stefan Hajnoczif9ea81e2013-06-24 17:13:16 +02002263 if (state->ops->commit) {
2264 state->ops->commit(state);
2265 }
Jeff Cody8802d1f2012-02-28 15:54:06 -05002266 }
2267
2268 /* success */
2269 goto exit;
2270
2271delete_and_fail:
Stefan Hajnoczib756b9c2014-11-21 10:48:57 +00002272 /* failure, and it is all-or-none; roll back all operations */
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02002273 QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) {
2274 if (state->ops->abort) {
2275 state->ops->abort(state);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08002276 }
Jeff Cody8802d1f2012-02-28 15:54:06 -05002277 }
2278exit:
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02002279 QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) {
2280 if (state->ops->clean) {
2281 state->ops->clean(state);
Wenchao Xiaba0c86a2013-05-08 18:25:16 +08002282 }
Stefan Hajnocziba5d6ab2013-06-24 17:13:15 +02002283 g_free(state);
Jeff Cody8802d1f2012-02-28 15:54:06 -05002284 }
John Snow94d16a62015-11-05 18:13:18 -05002285 if (!has_props) {
2286 qapi_free_TransactionProperties(props);
2287 }
Kevin Wolf7eaa8fb2018-04-23 16:06:26 +02002288 job_txn_unref(block_job_txn);
Jeff Cody8802d1f2012-02-28 15:54:06 -05002289}
2290
Kevin Wolffbe2d812016-09-20 13:38:46 +02002291void qmp_eject(bool has_device, const char *device,
2292 bool has_id, const char *id,
2293 bool has_force, bool force, Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +02002294{
Max Reitz38f54bd2015-10-26 21:39:12 +01002295 Error *local_err = NULL;
John Snow3a3086b2016-05-18 17:53:40 -04002296 int rc;
Markus Armbruster666daa62010-06-02 18:48:27 +02002297
John Snow3a3086b2016-05-18 17:53:40 -04002298 if (!has_force) {
2299 force = false;
2300 }
2301
Kevin Wolffbe2d812016-09-20 13:38:46 +02002302 rc = do_open_tray(has_device ? device : NULL,
2303 has_id ? id : NULL,
2304 force, &local_err);
Colin Lordbf18bee2016-06-06 14:15:22 -04002305 if (rc && rc != -ENOSYS) {
Max Reitz38f54bd2015-10-26 21:39:12 +01002306 error_propagate(errp, local_err);
Luiz Capitulinoc245b6a2011-12-07 16:02:36 -02002307 return;
Markus Armbruster666daa62010-06-02 18:48:27 +02002308 }
Colin Lordbf18bee2016-06-06 14:15:22 -04002309 error_free(local_err);
John Snow3a3086b2016-05-18 17:53:40 -04002310
Max Reitz82fcf662017-11-10 23:43:01 +01002311 blockdev_remove_medium(has_device, device, has_id, id, errp);
Markus Armbruster666daa62010-06-02 18:48:27 +02002312}
2313
Benoît Canet12d3ba82014-01-23 21:31:35 +01002314void qmp_block_passwd(bool has_device, const char *device,
2315 bool has_node_name, const char *node_name,
2316 const char *password, Error **errp)
Markus Armbruster666daa62010-06-02 18:48:27 +02002317{
Daniel P. Berrangec01c2142017-06-23 17:24:16 +01002318 error_setg(errp,
2319 "Setting block passwords directly is no longer supported");
Markus Armbruster666daa62010-06-02 18:48:27 +02002320}
2321
Colin Lordbf18bee2016-06-06 14:15:22 -04002322/*
2323 * Attempt to open the tray of @device.
2324 * If @force, ignore its tray lock.
2325 * Else, if the tray is locked, don't open it, but ask the guest to open it.
2326 * On error, store an error through @errp and return -errno.
2327 * If @device does not exist, return -ENODEV.
2328 * If it has no removable media, return -ENOTSUP.
2329 * If it has no tray, return -ENOSYS.
2330 * If the guest was asked to open the tray, return -EINPROGRESS.
2331 * Else, return 0.
John Snow3a3086b2016-05-18 17:53:40 -04002332 */
Kevin Wolfb33945c2016-09-20 13:38:43 +02002333static int do_open_tray(const char *blk_name, const char *qdev_id,
2334 bool force, Error **errp)
Max Reitz7d8a9f72015-10-26 21:39:08 +01002335{
2336 BlockBackend *blk;
Kevin Wolfb33945c2016-09-20 13:38:43 +02002337 const char *device = qdev_id ?: blk_name;
Max Reitz7d8a9f72015-10-26 21:39:08 +01002338 bool locked;
2339
Kevin Wolfb33945c2016-09-20 13:38:43 +02002340 blk = qmp_get_blk(blk_name, qdev_id, errp);
Max Reitz7d8a9f72015-10-26 21:39:08 +01002341 if (!blk) {
John Snow3a3086b2016-05-18 17:53:40 -04002342 return -ENODEV;
Max Reitz7d8a9f72015-10-26 21:39:08 +01002343 }
2344
2345 if (!blk_dev_has_removable_media(blk)) {
2346 error_setg(errp, "Device '%s' is not removable", device);
John Snow3a3086b2016-05-18 17:53:40 -04002347 return -ENOTSUP;
Max Reitz7d8a9f72015-10-26 21:39:08 +01002348 }
2349
Max Reitz12c7ec82016-01-29 20:49:11 +01002350 if (!blk_dev_has_tray(blk)) {
Colin Lordbf18bee2016-06-06 14:15:22 -04002351 error_setg(errp, "Device '%s' does not have a tray", device);
2352 return -ENOSYS;
Max Reitz12c7ec82016-01-29 20:49:11 +01002353 }
2354
Max Reitz7d8a9f72015-10-26 21:39:08 +01002355 if (blk_dev_is_tray_open(blk)) {
John Snow3a3086b2016-05-18 17:53:40 -04002356 return 0;
Max Reitz7d8a9f72015-10-26 21:39:08 +01002357 }
2358
2359 locked = blk_dev_is_medium_locked(blk);
2360 if (locked) {
2361 blk_dev_eject_request(blk, force);
2362 }
2363
2364 if (!locked || force) {
Kevin Wolf39829a02017-01-24 14:21:41 +01002365 blk_dev_change_media_cb(blk, false, &error_abort);
Max Reitz7d8a9f72015-10-26 21:39:08 +01002366 }
John Snow3a3086b2016-05-18 17:53:40 -04002367
2368 if (locked && !force) {
Colin Lordbf18bee2016-06-06 14:15:22 -04002369 error_setg(errp, "Device '%s' is locked and force was not specified, "
2370 "wait for tray to open and try again", device);
2371 return -EINPROGRESS;
John Snow3a3086b2016-05-18 17:53:40 -04002372 }
2373
2374 return 0;
2375}
2376
Kevin Wolfb33945c2016-09-20 13:38:43 +02002377void qmp_blockdev_open_tray(bool has_device, const char *device,
2378 bool has_id, const char *id,
2379 bool has_force, bool force,
John Snow3a3086b2016-05-18 17:53:40 -04002380 Error **errp)
2381{
Colin Lordbf18bee2016-06-06 14:15:22 -04002382 Error *local_err = NULL;
2383 int rc;
2384
John Snow3a3086b2016-05-18 17:53:40 -04002385 if (!has_force) {
2386 force = false;
2387 }
Kevin Wolfb33945c2016-09-20 13:38:43 +02002388 rc = do_open_tray(has_device ? device : NULL,
2389 has_id ? id : NULL,
2390 force, &local_err);
Colin Lordbf18bee2016-06-06 14:15:22 -04002391 if (rc && rc != -ENOSYS && rc != -EINPROGRESS) {
2392 error_propagate(errp, local_err);
2393 return;
2394 }
2395 error_free(local_err);
Max Reitz7d8a9f72015-10-26 21:39:08 +01002396}
2397
Kevin Wolfb33945c2016-09-20 13:38:43 +02002398void qmp_blockdev_close_tray(bool has_device, const char *device,
2399 bool has_id, const char *id,
2400 Error **errp)
Max Reitzabaaf592015-10-26 21:39:09 +01002401{
2402 BlockBackend *blk;
Kevin Wolf39829a02017-01-24 14:21:41 +01002403 Error *local_err = NULL;
Max Reitzabaaf592015-10-26 21:39:09 +01002404
Kevin Wolfb33945c2016-09-20 13:38:43 +02002405 device = has_device ? device : NULL;
2406 id = has_id ? id : NULL;
2407
2408 blk = qmp_get_blk(device, id, errp);
Max Reitzabaaf592015-10-26 21:39:09 +01002409 if (!blk) {
Max Reitzabaaf592015-10-26 21:39:09 +01002410 return;
2411 }
2412
2413 if (!blk_dev_has_removable_media(blk)) {
Kevin Wolfb33945c2016-09-20 13:38:43 +02002414 error_setg(errp, "Device '%s' is not removable", device ?: id);
Max Reitzabaaf592015-10-26 21:39:09 +01002415 return;
2416 }
2417
Max Reitz12c7ec82016-01-29 20:49:11 +01002418 if (!blk_dev_has_tray(blk)) {
2419 /* Ignore this command on tray-less devices */
2420 return;
2421 }
2422
Max Reitzabaaf592015-10-26 21:39:09 +01002423 if (!blk_dev_is_tray_open(blk)) {
2424 return;
2425 }
2426
Kevin Wolf39829a02017-01-24 14:21:41 +01002427 blk_dev_change_media_cb(blk, true, &local_err);
2428 if (local_err) {
2429 error_propagate(errp, local_err);
2430 return;
2431 }
Max Reitzabaaf592015-10-26 21:39:09 +01002432}
2433
Max Reitz82fcf662017-11-10 23:43:01 +01002434static void blockdev_remove_medium(bool has_device, const char *device,
2435 bool has_id, const char *id, Error **errp)
Max Reitz2814f672015-10-26 21:39:10 +01002436{
2437 BlockBackend *blk;
2438 BlockDriverState *bs;
2439 AioContext *aio_context;
Kevin Wolf00949ba2016-09-20 13:38:45 +02002440 bool has_attached_device;
Max Reitz2814f672015-10-26 21:39:10 +01002441
Kevin Wolf00949ba2016-09-20 13:38:45 +02002442 device = has_device ? device : NULL;
2443 id = has_id ? id : NULL;
2444
2445 blk = qmp_get_blk(device, id, errp);
Max Reitz2814f672015-10-26 21:39:10 +01002446 if (!blk) {
Max Reitz2814f672015-10-26 21:39:10 +01002447 return;
2448 }
2449
2450 /* For BBs without a device, we can exchange the BDS tree at will */
Kevin Wolf00949ba2016-09-20 13:38:45 +02002451 has_attached_device = blk_get_attached_dev(blk);
Max Reitz2814f672015-10-26 21:39:10 +01002452
Kevin Wolf00949ba2016-09-20 13:38:45 +02002453 if (has_attached_device && !blk_dev_has_removable_media(blk)) {
2454 error_setg(errp, "Device '%s' is not removable", device ?: id);
Max Reitz2814f672015-10-26 21:39:10 +01002455 return;
2456 }
2457
Kevin Wolf00949ba2016-09-20 13:38:45 +02002458 if (has_attached_device && blk_dev_has_tray(blk) &&
2459 !blk_dev_is_tray_open(blk))
2460 {
2461 error_setg(errp, "Tray of device '%s' is not open", device ?: id);
Max Reitz2814f672015-10-26 21:39:10 +01002462 return;
2463 }
2464
2465 bs = blk_bs(blk);
2466 if (!bs) {
2467 return;
2468 }
2469
2470 aio_context = bdrv_get_aio_context(bs);
2471 aio_context_acquire(aio_context);
2472
2473 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) {
2474 goto out;
2475 }
2476
Max Reitz2814f672015-10-26 21:39:10 +01002477 blk_remove_bs(blk);
2478
Max Reitz12c7ec82016-01-29 20:49:11 +01002479 if (!blk_dev_has_tray(blk)) {
2480 /* For tray-less devices, blockdev-open-tray is a no-op (or may not be
2481 * called at all); therefore, the medium needs to be ejected here.
2482 * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load
2483 * value passed here (i.e. false). */
Kevin Wolf39829a02017-01-24 14:21:41 +01002484 blk_dev_change_media_cb(blk, false, &error_abort);
Max Reitz12c7ec82016-01-29 20:49:11 +01002485 }
2486
Max Reitz2814f672015-10-26 21:39:10 +01002487out:
2488 aio_context_release(aio_context);
2489}
2490
Max Reitz34ce1112017-11-10 23:43:02 +01002491void qmp_blockdev_remove_medium(const char *id, Error **errp)
Max Reitz82fcf662017-11-10 23:43:01 +01002492{
2493 blockdev_remove_medium(false, NULL, true, id, errp);
2494}
2495
Kevin Wolf716df212016-09-20 13:38:44 +02002496static void qmp_blockdev_insert_anon_medium(BlockBackend *blk,
Max Reitzd1299882015-10-26 21:39:11 +01002497 BlockDriverState *bs, Error **errp)
2498{
Kevin Wolf39829a02017-01-24 14:21:41 +01002499 Error *local_err = NULL;
Max Reitzd1299882015-10-26 21:39:11 +01002500 bool has_device;
Kevin Wolfd7086422017-01-13 19:02:32 +01002501 int ret;
Max Reitzd1299882015-10-26 21:39:11 +01002502
Max Reitzd1299882015-10-26 21:39:11 +01002503 /* For BBs without a device, we can exchange the BDS tree at will */
2504 has_device = blk_get_attached_dev(blk);
2505
2506 if (has_device && !blk_dev_has_removable_media(blk)) {
Kevin Wolf716df212016-09-20 13:38:44 +02002507 error_setg(errp, "Device is not removable");
Max Reitzd1299882015-10-26 21:39:11 +01002508 return;
2509 }
2510
Max Reitz12c7ec82016-01-29 20:49:11 +01002511 if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) {
Kevin Wolf716df212016-09-20 13:38:44 +02002512 error_setg(errp, "Tray of the device is not open");
Max Reitzd1299882015-10-26 21:39:11 +01002513 return;
2514 }
2515
2516 if (blk_bs(blk)) {
Kevin Wolf716df212016-09-20 13:38:44 +02002517 error_setg(errp, "There already is a medium in the device");
Max Reitzd1299882015-10-26 21:39:11 +01002518 return;
2519 }
2520
Kevin Wolfd7086422017-01-13 19:02:32 +01002521 ret = blk_insert_bs(blk, bs, errp);
2522 if (ret < 0) {
2523 return;
2524 }
Max Reitzd1299882015-10-26 21:39:11 +01002525
Max Reitz12c7ec82016-01-29 20:49:11 +01002526 if (!blk_dev_has_tray(blk)) {
2527 /* For tray-less devices, blockdev-close-tray is a no-op (or may not be
2528 * called at all); therefore, the medium needs to be pushed into the
2529 * slot here.
2530 * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load
2531 * value passed here (i.e. true). */
Kevin Wolf39829a02017-01-24 14:21:41 +01002532 blk_dev_change_media_cb(blk, true, &local_err);
2533 if (local_err) {
2534 error_propagate(errp, local_err);
2535 blk_remove_bs(blk);
2536 return;
2537 }
Max Reitz12c7ec82016-01-29 20:49:11 +01002538 }
Max Reitzd1299882015-10-26 21:39:11 +01002539}
2540
Max Reitz82fcf662017-11-10 23:43:01 +01002541static void blockdev_insert_medium(bool has_device, const char *device,
2542 bool has_id, const char *id,
2543 const char *node_name, Error **errp)
Max Reitzd1299882015-10-26 21:39:11 +01002544{
Kevin Wolf716df212016-09-20 13:38:44 +02002545 BlockBackend *blk;
Max Reitzd1299882015-10-26 21:39:11 +01002546 BlockDriverState *bs;
2547
Kevin Wolf716df212016-09-20 13:38:44 +02002548 blk = qmp_get_blk(has_device ? device : NULL,
2549 has_id ? id : NULL,
2550 errp);
2551 if (!blk) {
2552 return;
2553 }
2554
Max Reitzd1299882015-10-26 21:39:11 +01002555 bs = bdrv_find_node(node_name);
2556 if (!bs) {
2557 error_setg(errp, "Node '%s' not found", node_name);
2558 return;
2559 }
2560
Kevin Wolf1f0c4612016-03-22 18:38:44 +01002561 if (bdrv_has_blk(bs)) {
Kevin Wolfe467da72016-09-21 14:56:09 +02002562 error_setg(errp, "Node '%s' is already in use", node_name);
Max Reitzd1299882015-10-26 21:39:11 +01002563 return;
2564 }
2565
Kevin Wolf716df212016-09-20 13:38:44 +02002566 qmp_blockdev_insert_anon_medium(blk, bs, errp);
Max Reitzd1299882015-10-26 21:39:11 +01002567}
2568
Max Reitz34ce1112017-11-10 23:43:02 +01002569void qmp_blockdev_insert_medium(const char *id, const char *node_name,
2570 Error **errp)
Max Reitz82fcf662017-11-10 23:43:01 +01002571{
2572 blockdev_insert_medium(false, NULL, true, id, node_name, errp);
2573}
2574
Kevin Wolf70e2cb32016-09-20 13:38:47 +02002575void qmp_blockdev_change_medium(bool has_device, const char *device,
2576 bool has_id, const char *id,
2577 const char *filename,
Max Reitz24fb4132015-11-06 16:27:06 +01002578 bool has_format, const char *format,
Max Reitz39ff43d2015-11-11 04:49:44 +01002579 bool has_read_only,
2580 BlockdevChangeReadOnlyMode read_only,
Max Reitz24fb4132015-11-06 16:27:06 +01002581 Error **errp)
Max Reitzde2c6c02015-10-26 21:39:13 +01002582{
2583 BlockBackend *blk;
2584 BlockDriverState *medium_bs = NULL;
Max Reitz5b363932016-05-17 16:41:31 +02002585 int bdrv_flags;
Kevin Wolfb85114f2016-09-12 19:08:31 +02002586 bool detect_zeroes;
Colin Lord38a53d52016-06-08 13:56:28 -04002587 int rc;
Max Reitzde2c6c02015-10-26 21:39:13 +01002588 QDict *options = NULL;
2589 Error *err = NULL;
2590
Kevin Wolf70e2cb32016-09-20 13:38:47 +02002591 blk = qmp_get_blk(has_device ? device : NULL,
2592 has_id ? id : NULL,
2593 errp);
Max Reitzde2c6c02015-10-26 21:39:13 +01002594 if (!blk) {
Max Reitzde2c6c02015-10-26 21:39:13 +01002595 goto fail;
2596 }
2597
2598 if (blk_bs(blk)) {
2599 blk_update_root_state(blk);
2600 }
2601
2602 bdrv_flags = blk_get_open_flags_from_root_state(blk);
Alyssa Milburn156abc22016-02-06 13:36:18 +00002603 bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING |
2604 BDRV_O_PROTOCOL);
Max Reitzde2c6c02015-10-26 21:39:13 +01002605
Max Reitz39ff43d2015-11-11 04:49:44 +01002606 if (!has_read_only) {
2607 read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN;
2608 }
2609
2610 switch (read_only) {
2611 case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN:
2612 break;
2613
2614 case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY:
2615 bdrv_flags &= ~BDRV_O_RDWR;
2616 break;
2617
2618 case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE:
2619 bdrv_flags |= BDRV_O_RDWR;
2620 break;
2621
2622 default:
2623 abort();
2624 }
2625
Kevin Wolfb85114f2016-09-12 19:08:31 +02002626 options = qdict_new();
2627 detect_zeroes = blk_get_detect_zeroes_from_root_state(blk);
Eric Blake46f5ac22017-04-27 16:58:17 -05002628 qdict_put_str(options, "detect-zeroes", detect_zeroes ? "on" : "off");
Kevin Wolfb85114f2016-09-12 19:08:31 +02002629
Max Reitz24fb4132015-11-06 16:27:06 +01002630 if (has_format) {
Eric Blake46f5ac22017-04-27 16:58:17 -05002631 qdict_put_str(options, "driver", format);
Max Reitzde2c6c02015-10-26 21:39:13 +01002632 }
2633
Max Reitz5b363932016-05-17 16:41:31 +02002634 medium_bs = bdrv_open(filename, NULL, options, bdrv_flags, errp);
2635 if (!medium_bs) {
Max Reitzde2c6c02015-10-26 21:39:13 +01002636 goto fail;
2637 }
2638
Kevin Wolf70e2cb32016-09-20 13:38:47 +02002639 rc = do_open_tray(has_device ? device : NULL,
2640 has_id ? id : NULL,
2641 false, &err);
Colin Lord38a53d52016-06-08 13:56:28 -04002642 if (rc && rc != -ENOSYS) {
Max Reitzde2c6c02015-10-26 21:39:13 +01002643 error_propagate(errp, err);
2644 goto fail;
2645 }
Colin Lord38a53d52016-06-08 13:56:28 -04002646 error_free(err);
2647 err = NULL;
Max Reitzde2c6c02015-10-26 21:39:13 +01002648
Max Reitz82fcf662017-11-10 23:43:01 +01002649 blockdev_remove_medium(has_device, device, has_id, id, &err);
Max Reitzde2c6c02015-10-26 21:39:13 +01002650 if (err) {
2651 error_propagate(errp, err);
2652 goto fail;
2653 }
2654
Kevin Wolf716df212016-09-20 13:38:44 +02002655 qmp_blockdev_insert_anon_medium(blk, medium_bs, &err);
Max Reitzde2c6c02015-10-26 21:39:13 +01002656 if (err) {
2657 error_propagate(errp, err);
2658 goto fail;
2659 }
2660
Kevin Wolf70e2cb32016-09-20 13:38:47 +02002661 qmp_blockdev_close_tray(has_device, device, has_id, id, errp);
Max Reitzde2c6c02015-10-26 21:39:13 +01002662
2663fail:
2664 /* If the medium has been inserted, the device has its own reference, so
2665 * ours must be relinquished; and if it has not been inserted successfully,
2666 * the reference must be relinquished anyway */
2667 bdrv_unref(medium_bs);
2668}
2669
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002670/* throttling disk I/O limits */
Eric Blake4dc93972016-07-13 21:50:21 -06002671void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp)
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002672{
Benoît Canetcc0681c2013-09-02 14:14:39 +02002673 ThrottleConfig cfg;
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002674 BlockDriverState *bs;
Fam Zhenga0e85442015-03-02 19:36:48 +08002675 BlockBackend *blk;
Stefan Hajnoczib15446f2014-05-14 16:22:47 +02002676 AioContext *aio_context;
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002677
Kevin Wolf7a9877a2016-09-20 13:38:48 +02002678 blk = qmp_get_blk(arg->has_device ? arg->device : NULL,
2679 arg->has_id ? arg->id : NULL,
2680 errp);
Fam Zhenga0e85442015-03-02 19:36:48 +08002681 if (!blk) {
Luiz Capitulino80047da2011-12-14 16:49:14 -02002682 return;
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002683 }
Max Reitz5433c242015-10-19 17:53:29 +02002684
2685 aio_context = blk_get_aio_context(blk);
2686 aio_context_acquire(aio_context);
2687
Fam Zhenga0e85442015-03-02 19:36:48 +08002688 bs = blk_bs(blk);
Max Reitz5433c242015-10-19 17:53:29 +02002689 if (!bs) {
Kevin Wolf7a9877a2016-09-20 13:38:48 +02002690 error_setg(errp, "Device has no medium");
Max Reitz5433c242015-10-19 17:53:29 +02002691 goto out;
2692 }
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002693
Alberto Garcia1588ab52016-02-18 12:27:00 +02002694 throttle_config_init(&cfg);
Eric Blake4dc93972016-07-13 21:50:21 -06002695 cfg.buckets[THROTTLE_BPS_TOTAL].avg = arg->bps;
2696 cfg.buckets[THROTTLE_BPS_READ].avg = arg->bps_rd;
2697 cfg.buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr;
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002698
Eric Blake4dc93972016-07-13 21:50:21 -06002699 cfg.buckets[THROTTLE_OPS_TOTAL].avg = arg->iops;
2700 cfg.buckets[THROTTLE_OPS_READ].avg = arg->iops_rd;
2701 cfg.buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr;
Benoît Canetcc0681c2013-09-02 14:14:39 +02002702
Eric Blake4dc93972016-07-13 21:50:21 -06002703 if (arg->has_bps_max) {
2704 cfg.buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max;
Benoît Canet3e9fab62013-09-02 14:14:40 +02002705 }
Eric Blake4dc93972016-07-13 21:50:21 -06002706 if (arg->has_bps_rd_max) {
2707 cfg.buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max;
Benoît Canet3e9fab62013-09-02 14:14:40 +02002708 }
Eric Blake4dc93972016-07-13 21:50:21 -06002709 if (arg->has_bps_wr_max) {
2710 cfg.buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max;
Benoît Canet3e9fab62013-09-02 14:14:40 +02002711 }
Eric Blake4dc93972016-07-13 21:50:21 -06002712 if (arg->has_iops_max) {
2713 cfg.buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max;
Benoît Canet3e9fab62013-09-02 14:14:40 +02002714 }
Eric Blake4dc93972016-07-13 21:50:21 -06002715 if (arg->has_iops_rd_max) {
2716 cfg.buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max;
Benoît Canet3e9fab62013-09-02 14:14:40 +02002717 }
Eric Blake4dc93972016-07-13 21:50:21 -06002718 if (arg->has_iops_wr_max) {
2719 cfg.buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max;
Benoît Canet3e9fab62013-09-02 14:14:40 +02002720 }
Benoît Canetcc0681c2013-09-02 14:14:39 +02002721
Eric Blake4dc93972016-07-13 21:50:21 -06002722 if (arg->has_bps_max_length) {
2723 cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = arg->bps_max_length;
Alberto Garciadce13202016-02-18 12:27:03 +02002724 }
Eric Blake4dc93972016-07-13 21:50:21 -06002725 if (arg->has_bps_rd_max_length) {
2726 cfg.buckets[THROTTLE_BPS_READ].burst_length = arg->bps_rd_max_length;
Alberto Garciadce13202016-02-18 12:27:03 +02002727 }
Eric Blake4dc93972016-07-13 21:50:21 -06002728 if (arg->has_bps_wr_max_length) {
2729 cfg.buckets[THROTTLE_BPS_WRITE].burst_length = arg->bps_wr_max_length;
Alberto Garciadce13202016-02-18 12:27:03 +02002730 }
Eric Blake4dc93972016-07-13 21:50:21 -06002731 if (arg->has_iops_max_length) {
2732 cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = arg->iops_max_length;
Alberto Garciadce13202016-02-18 12:27:03 +02002733 }
Eric Blake4dc93972016-07-13 21:50:21 -06002734 if (arg->has_iops_rd_max_length) {
2735 cfg.buckets[THROTTLE_OPS_READ].burst_length = arg->iops_rd_max_length;
Alberto Garciadce13202016-02-18 12:27:03 +02002736 }
Eric Blake4dc93972016-07-13 21:50:21 -06002737 if (arg->has_iops_wr_max_length) {
2738 cfg.buckets[THROTTLE_OPS_WRITE].burst_length = arg->iops_wr_max_length;
Alberto Garciadce13202016-02-18 12:27:03 +02002739 }
2740
Eric Blake4dc93972016-07-13 21:50:21 -06002741 if (arg->has_iops_size) {
2742 cfg.op_size = arg->iops_size;
Benoît Canet2024c1d2013-09-02 14:14:41 +02002743 }
Benoît Canetcc0681c2013-09-02 14:14:39 +02002744
Alberto Garciad5851082016-02-18 12:26:59 +02002745 if (!throttle_is_valid(&cfg, errp)) {
Max Reitz5433c242015-10-19 17:53:29 +02002746 goto out;
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002747 }
2748
Alberto Garcia76f4afb2015-06-08 18:17:44 +02002749 if (throttle_enabled(&cfg)) {
2750 /* Enable I/O limits if they're not enabled yet, otherwise
2751 * just update the throttling group. */
Manos Pitsidianakis022cdc92017-08-25 16:20:23 +03002752 if (!blk_get_public(blk)->throttle_group_member.throttle_state) {
Eric Blake4dc93972016-07-13 21:50:21 -06002753 blk_io_limits_enable(blk,
Kevin Wolf7a9877a2016-09-20 13:38:48 +02002754 arg->has_group ? arg->group :
2755 arg->has_device ? arg->device :
2756 arg->id);
Eric Blake4dc93972016-07-13 21:50:21 -06002757 } else if (arg->has_group) {
2758 blk_io_limits_update_group(blk, arg->group);
Alberto Garcia76f4afb2015-06-08 18:17:44 +02002759 }
2760 /* Set the new throttling configuration */
Kevin Wolf97148072016-03-21 13:53:52 +01002761 blk_set_io_limits(blk, &cfg);
Manos Pitsidianakis022cdc92017-08-25 16:20:23 +03002762 } else if (blk_get_public(blk)->throttle_group_member.throttle_state) {
Alberto Garcia76f4afb2015-06-08 18:17:44 +02002763 /* If all throttling settings are set to 0, disable I/O limits */
Kevin Wolf97148072016-03-21 13:53:52 +01002764 blk_io_limits_disable(blk);
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002765 }
Stefan Hajnoczib15446f2014-05-14 16:22:47 +02002766
Max Reitz5433c242015-10-19 17:53:29 +02002767out:
Stefan Hajnoczib15446f2014-05-14 16:22:47 +02002768 aio_context_release(aio_context);
Zhi Yong Wu727f0052011-11-08 13:00:31 +08002769}
2770
John Snow341ebc22015-04-17 19:49:52 -04002771void qmp_block_dirty_bitmap_add(const char *node, const char *name,
2772 bool has_granularity, uint32_t granularity,
Vladimir Sementsov-Ogievskiyfd5ae4c2017-06-28 15:05:23 +03002773 bool has_persistent, bool persistent,
Vladimir Sementsov-Ogievskiyeb738bb2017-06-28 15:05:24 +03002774 bool has_autoload, bool autoload,
Vladimir Sementsov-Ogievskiya6e2ca52018-06-11 14:53:32 -04002775 bool has_disabled, bool disabled,
John Snow341ebc22015-04-17 19:49:52 -04002776 Error **errp)
2777{
John Snow341ebc22015-04-17 19:49:52 -04002778 BlockDriverState *bs;
Vladimir Sementsov-Ogievskiyfd5ae4c2017-06-28 15:05:23 +03002779 BdrvDirtyBitmap *bitmap;
John Snow341ebc22015-04-17 19:49:52 -04002780
2781 if (!name || name[0] == '\0') {
2782 error_setg(errp, "Bitmap name cannot be empty");
2783 return;
2784 }
2785
2786 bs = bdrv_lookup_bs(node, node, errp);
2787 if (!bs) {
2788 return;
2789 }
2790
John Snow341ebc22015-04-17 19:49:52 -04002791 if (has_granularity) {
2792 if (granularity < 512 || !is_power_of_2(granularity)) {
2793 error_setg(errp, "Granularity must be power of 2 "
2794 "and at least 512");
Paolo Bonzini21198822017-06-05 14:39:03 +02002795 return;
John Snow341ebc22015-04-17 19:49:52 -04002796 }
2797 } else {
2798 /* Default to cluster size, if available: */
2799 granularity = bdrv_get_default_bitmap_granularity(bs);
2800 }
2801
Vladimir Sementsov-Ogievskiyfd5ae4c2017-06-28 15:05:23 +03002802 if (!has_persistent) {
2803 persistent = false;
2804 }
Vladimir Sementsov-Ogievskiyeb738bb2017-06-28 15:05:24 +03002805
Vladimir Sementsov-Ogievskiy3e99da52018-02-02 19:07:52 +03002806 if (has_autoload) {
2807 warn_report("Autoload option is deprecated and its value is ignored");
Vladimir Sementsov-Ogievskiyeb738bb2017-06-28 15:05:24 +03002808 }
Vladimir Sementsov-Ogievskiyfd5ae4c2017-06-28 15:05:23 +03002809
Vladimir Sementsov-Ogievskiya6e2ca52018-06-11 14:53:32 -04002810 if (!has_disabled) {
2811 disabled = false;
2812 }
2813
Vladimir Sementsov-Ogievskiyfd5ae4c2017-06-28 15:05:23 +03002814 if (persistent &&
2815 !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp))
2816 {
2817 return;
2818 }
2819
2820 bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp);
Vladimir Sementsov-Ogievskiyeb738bb2017-06-28 15:05:24 +03002821 if (bitmap == NULL) {
2822 return;
Vladimir Sementsov-Ogievskiyfd5ae4c2017-06-28 15:05:23 +03002823 }
Vladimir Sementsov-Ogievskiyeb738bb2017-06-28 15:05:24 +03002824
Vladimir Sementsov-Ogievskiya6e2ca52018-06-11 14:53:32 -04002825 if (disabled) {
2826 bdrv_disable_dirty_bitmap(bitmap);
2827 }
2828
Vladimir Sementsov-Ogievskiyeb738bb2017-06-28 15:05:24 +03002829 bdrv_dirty_bitmap_set_persistance(bitmap, persistent);
John Snow341ebc22015-04-17 19:49:52 -04002830}
2831
2832void qmp_block_dirty_bitmap_remove(const char *node, const char *name,
2833 Error **errp)
2834{
John Snow341ebc22015-04-17 19:49:52 -04002835 BlockDriverState *bs;
2836 BdrvDirtyBitmap *bitmap;
Vladimir Sementsov-Ogievskiy5c36c1a2017-06-28 15:05:29 +03002837 Error *local_err = NULL;
John Snow341ebc22015-04-17 19:49:52 -04002838
Paolo Bonzini21198822017-06-05 14:39:03 +02002839 bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp);
John Snow341ebc22015-04-17 19:49:52 -04002840 if (!bitmap || !bs) {
2841 return;
2842 }
2843
John Snow9bd2b082015-04-17 19:49:57 -04002844 if (bdrv_dirty_bitmap_frozen(bitmap)) {
2845 error_setg(errp,
2846 "Bitmap '%s' is currently frozen and cannot be removed",
2847 name);
Paolo Bonzini21198822017-06-05 14:39:03 +02002848 return;
Vladimir Sementsov-Ogievskiy4f43e952018-03-13 15:34:00 -04002849 } else if (bdrv_dirty_bitmap_qmp_locked(bitmap)) {
2850 error_setg(errp,
2851 "Bitmap '%s' is currently locked and cannot be removed",
2852 name);
2853 return;
John Snow9bd2b082015-04-17 19:49:57 -04002854 }
Vladimir Sementsov-Ogievskiy5c36c1a2017-06-28 15:05:29 +03002855
2856 if (bdrv_dirty_bitmap_get_persistance(bitmap)) {
2857 bdrv_remove_persistent_dirty_bitmap(bs, name, &local_err);
2858 if (local_err != NULL) {
2859 error_propagate(errp, local_err);
2860 return;
2861 }
2862 }
2863
John Snow341ebc22015-04-17 19:49:52 -04002864 bdrv_release_dirty_bitmap(bs, bitmap);
John Snow341ebc22015-04-17 19:49:52 -04002865}
2866
John Snowe74e6b72015-04-17 19:49:59 -04002867/**
2868 * Completely clear a bitmap, for the purposes of synchronizing a bitmap
2869 * immediately after a full backup operation.
2870 */
2871void qmp_block_dirty_bitmap_clear(const char *node, const char *name,
2872 Error **errp)
2873{
John Snowe74e6b72015-04-17 19:49:59 -04002874 BdrvDirtyBitmap *bitmap;
2875 BlockDriverState *bs;
2876
Paolo Bonzini21198822017-06-05 14:39:03 +02002877 bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp);
John Snowe74e6b72015-04-17 19:49:59 -04002878 if (!bitmap || !bs) {
2879 return;
2880 }
2881
2882 if (bdrv_dirty_bitmap_frozen(bitmap)) {
2883 error_setg(errp,
2884 "Bitmap '%s' is currently frozen and cannot be modified",
2885 name);
Paolo Bonzini21198822017-06-05 14:39:03 +02002886 return;
Vladimir Sementsov-Ogievskiy4f43e952018-03-13 15:34:00 -04002887 } else if (bdrv_dirty_bitmap_qmp_locked(bitmap)) {
2888 error_setg(errp,
2889 "Bitmap '%s' is currently locked and cannot be modified",
2890 name);
2891 return;
John Snowe74e6b72015-04-17 19:49:59 -04002892 } else if (!bdrv_dirty_bitmap_enabled(bitmap)) {
2893 error_setg(errp,
2894 "Bitmap '%s' is currently disabled and cannot be cleared",
2895 name);
Paolo Bonzini21198822017-06-05 14:39:03 +02002896 return;
Vladimir Sementsov-Ogievskiyd6883bc2017-06-28 15:05:10 +03002897 } else if (bdrv_dirty_bitmap_readonly(bitmap)) {
2898 error_setg(errp, "Bitmap '%s' is readonly and cannot be cleared", name);
2899 return;
John Snowe74e6b72015-04-17 19:49:59 -04002900 }
2901
Fam Zhengdf9a6812015-11-09 18:16:54 +08002902 bdrv_clear_dirty_bitmap(bitmap, NULL);
John Snowe74e6b72015-04-17 19:49:59 -04002903}
2904
Vladimir Sementsov-Ogievskiy5c5d2e52018-06-11 14:53:32 -04002905void qmp_x_block_dirty_bitmap_enable(const char *node, const char *name,
2906 Error **errp)
2907{
2908 BlockDriverState *bs;
2909 BdrvDirtyBitmap *bitmap;
2910
2911 bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp);
2912 if (!bitmap) {
2913 return;
2914 }
2915
2916 if (bdrv_dirty_bitmap_frozen(bitmap)) {
2917 error_setg(errp,
2918 "Bitmap '%s' is currently frozen and cannot be enabled",
2919 name);
2920 return;
2921 }
2922
2923 bdrv_enable_dirty_bitmap(bitmap);
2924}
2925
2926void qmp_x_block_dirty_bitmap_disable(const char *node, const char *name,
2927 Error **errp)
2928{
2929 BlockDriverState *bs;
2930 BdrvDirtyBitmap *bitmap;
2931
2932 bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp);
2933 if (!bitmap) {
2934 return;
2935 }
2936
2937 if (bdrv_dirty_bitmap_frozen(bitmap)) {
2938 error_setg(errp,
2939 "Bitmap '%s' is currently frozen and cannot be disabled",
2940 name);
2941 return;
2942 }
2943
2944 bdrv_disable_dirty_bitmap(bitmap);
2945}
2946
Vladimir Sementsov-Ogievskiyb598e532018-06-11 14:53:32 -04002947void qmp_x_block_dirty_bitmap_merge(const char *node, const char *dst_name,
2948 const char *src_name, Error **errp)
2949{
2950 BlockDriverState *bs;
2951 BdrvDirtyBitmap *dst, *src;
2952
2953 dst = block_dirty_bitmap_lookup(node, dst_name, &bs, errp);
2954 if (!dst) {
2955 return;
2956 }
2957
2958 if (bdrv_dirty_bitmap_frozen(dst)) {
2959 error_setg(errp, "Bitmap '%s' is frozen and cannot be modified",
2960 dst_name);
2961 return;
2962 } else if (bdrv_dirty_bitmap_readonly(dst)) {
2963 error_setg(errp, "Bitmap '%s' is readonly and cannot be modified",
2964 dst_name);
2965 return;
2966 }
2967
2968 src = bdrv_find_dirty_bitmap(bs, src_name);
2969 if (!src) {
2970 error_setg(errp, "Dirty bitmap '%s' not found", src_name);
2971 return;
2972 }
2973
2974 bdrv_merge_dirty_bitmap(dst, src, errp);
2975}
2976
Vladimir Sementsov-Ogievskiya3b52532017-06-28 15:05:25 +03002977BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node,
2978 const char *name,
2979 Error **errp)
2980{
2981 BdrvDirtyBitmap *bitmap;
2982 BlockDriverState *bs;
2983 BlockDirtyBitmapSha256 *ret = NULL;
2984 char *sha256;
2985
2986 bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp);
2987 if (!bitmap || !bs) {
2988 return NULL;
2989 }
2990
2991 sha256 = bdrv_dirty_bitmap_sha256(bitmap, errp);
2992 if (sha256 == NULL) {
2993 return NULL;
2994 }
2995
2996 ret = g_new(BlockDirtyBitmapSha256, 1);
2997 ret->sha256 = sha256;
2998
2999 return ret;
3000}
3001
Markus Armbruster072ebe62015-03-05 17:00:56 +01003002void hmp_drive_del(Monitor *mon, const QDict *qdict)
Ryan Harper9063f812010-11-12 11:07:13 -06003003{
3004 const char *id = qdict_get_str(qdict, "id");
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02003005 BlockBackend *blk;
Ryan Harper9063f812010-11-12 11:07:13 -06003006 BlockDriverState *bs;
Stefan Hajnoczi8ad42022014-08-18 16:07:12 +01003007 AioContext *aio_context;
Fam Zheng3718d8a2014-05-23 21:29:43 +08003008 Error *local_err = NULL;
Ryan Harper9063f812010-11-12 11:07:13 -06003009
Kevin Wolf2073d412016-02-23 17:50:37 +01003010 bs = bdrv_find_node(id);
3011 if (bs) {
Markus Armbruster79b7a772017-03-21 17:53:28 +01003012 qmp_blockdev_del(id, &local_err);
Kevin Wolf2073d412016-02-23 17:50:37 +01003013 if (local_err) {
3014 error_report_err(local_err);
3015 }
3016 return;
3017 }
3018
Markus Armbruster7e7d56d2014-10-07 13:59:05 +02003019 blk = blk_by_name(id);
3020 if (!blk) {
Markus Armbrusterb1422f22014-05-16 11:00:09 +02003021 error_report("Device '%s' not found", id);
Markus Armbruster072ebe62015-03-05 17:00:56 +01003022 return;
Ryan Harper9063f812010-11-12 11:07:13 -06003023 }
Stefan Hajnoczi8ad42022014-08-18 16:07:12 +01003024
Markus Armbruster26f8b3a2014-10-07 13:59:22 +02003025 if (!blk_legacy_dinfo(blk)) {
Markus Armbruster48f364d2014-09-11 16:45:39 +02003026 error_report("Deleting device added with blockdev-add"
3027 " is not supported");
Markus Armbruster072ebe62015-03-05 17:00:56 +01003028 return;
Markus Armbruster48f364d2014-09-11 16:45:39 +02003029 }
3030
Max Reitz5433c242015-10-19 17:53:29 +02003031 aio_context = blk_get_aio_context(blk);
Stefan Hajnoczi8ad42022014-08-18 16:07:12 +01003032 aio_context_acquire(aio_context);
3033
Max Reitz5433c242015-10-19 17:53:29 +02003034 bs = blk_bs(blk);
3035 if (bs) {
3036 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) {
3037 error_report_err(local_err);
3038 aio_context_release(aio_context);
3039 return;
3040 }
Ryan Harper9063f812010-11-12 11:07:13 -06003041
Max Reitz938abd42016-01-29 16:36:09 +01003042 blk_remove_bs(blk);
Max Reitz5433c242015-10-19 17:53:29 +02003043 }
Ryan Harper9063f812010-11-12 11:07:13 -06003044
Max Reitz7c735872016-03-16 19:54:39 +01003045 /* Make the BlockBackend and the attached BlockDriverState anonymous */
Max Reitzefaa7c42016-03-16 19:54:38 +01003046 monitor_remove_blk(blk);
3047
Max Reitz7c735872016-03-16 19:54:39 +01003048 /* If this BlockBackend has a device attached to it, its refcount will be
3049 * decremented when the device is removed; otherwise we have to do so here.
Ryan Harperd22b2f42011-03-29 20:51:47 -05003050 */
Markus Armbrustera7f53e22014-10-07 13:59:25 +02003051 if (blk_get_attached_dev(blk)) {
Stefan Hajnoczi293c51a2013-06-05 10:33:14 +02003052 /* Further I/O must not pause the guest */
Max Reitz373340b2015-10-19 17:53:22 +02003053 blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT,
3054 BLOCKDEV_ON_ERROR_REPORT);
Ryan Harperd22b2f42011-03-29 20:51:47 -05003055 } else {
Markus Armbrusterb9fe8a72014-10-07 13:59:09 +02003056 blk_unref(blk);
Ryan Harper9063f812010-11-12 11:07:13 -06003057 }
3058
Stefan Hajnoczi8ad42022014-08-18 16:07:12 +01003059 aio_context_release(aio_context);
Ryan Harper9063f812010-11-12 11:07:13 -06003060}
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01003061
Benoît Canet3b1dbd12014-01-23 21:31:37 +01003062void qmp_block_resize(bool has_device, const char *device,
3063 bool has_node_name, const char *node_name,
3064 int64_t size, Error **errp)
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01003065{
Benoît Canet3b1dbd12014-01-23 21:31:37 +01003066 Error *local_err = NULL;
Kevin Wolf7dad9ee2017-02-17 11:23:33 +01003067 BlockBackend *blk = NULL;
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01003068 BlockDriverState *bs;
Stefan Hajnoczi927e0e72014-08-18 14:52:28 +01003069 AioContext *aio_context;
Kevin Wolf87329012013-05-02 15:32:55 +02003070 int ret;
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01003071
Benoît Canet3b1dbd12014-01-23 21:31:37 +01003072 bs = bdrv_lookup_bs(has_device ? device : NULL,
3073 has_node_name ? node_name : NULL,
3074 &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01003075 if (local_err) {
Benoît Canet3b1dbd12014-01-23 21:31:37 +01003076 error_propagate(errp, local_err);
3077 return;
3078 }
3079
Stefan Hajnoczi927e0e72014-08-18 14:52:28 +01003080 aio_context = bdrv_get_aio_context(bs);
3081 aio_context_acquire(aio_context);
3082
Benoît Canet3b1dbd12014-01-23 21:31:37 +01003083 if (!bdrv_is_first_non_filter(bs)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01003084 error_setg(errp, QERR_FEATURE_DISABLED, "resize");
Stefan Hajnoczi927e0e72014-08-18 14:52:28 +01003085 goto out;
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01003086 }
3087
3088 if (size < 0) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01003089 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size");
Stefan Hajnoczi927e0e72014-08-18 14:52:28 +01003090 goto out;
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01003091 }
3092
Jeff Cody9c75e162014-06-25 16:55:30 -04003093 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01003094 error_setg(errp, QERR_DEVICE_IN_USE, device);
Stefan Hajnoczi927e0e72014-08-18 14:52:28 +01003095 goto out;
Jeff Cody9c75e162014-06-25 16:55:30 -04003096 }
3097
Kevin Wolf6d0eb642017-01-20 17:07:26 +01003098 blk = blk_new(BLK_PERM_RESIZE, BLK_PERM_ALL);
Kevin Wolfd7086422017-01-13 19:02:32 +01003099 ret = blk_insert_bs(blk, bs, errp);
3100 if (ret < 0) {
3101 goto out;
3102 }
Kevin Wolf7dad9ee2017-02-17 11:23:33 +01003103
John Snow698bdfa2017-05-10 13:39:45 -04003104 bdrv_drained_begin(bs);
Max Reitz3a691c52017-06-13 22:20:54 +02003105 ret = blk_truncate(blk, size, PREALLOC_MODE_OFF, errp);
John Snow698bdfa2017-05-10 13:39:45 -04003106 bdrv_drained_end(bs);
Stefan Hajnoczi927e0e72014-08-18 14:52:28 +01003107
3108out:
Kevin Wolf7dad9ee2017-02-17 11:23:33 +01003109 blk_unref(blk);
Stefan Hajnoczi927e0e72014-08-18 14:52:28 +01003110 aio_context_release(aio_context);
Christoph Hellwig6d4a2b32011-01-24 13:32:33 +01003111}
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00003112
Alberto Garcia23233222016-07-05 17:28:59 +03003113void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
Jeff Cody13d8cc52014-06-25 15:40:11 -04003114 bool has_base, const char *base,
Alberto Garcia312fe092016-10-28 10:08:19 +03003115 bool has_base_node, const char *base_node,
Jeff Cody13d8cc52014-06-25 15:40:11 -04003116 bool has_backing_file, const char *backing_file,
3117 bool has_speed, int64_t speed,
Paolo Bonzini1d809092012-09-28 17:22:59 +02003118 bool has_on_error, BlockdevOnError on_error,
3119 Error **errp)
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00003120{
Alberto Garcia554b6142016-10-28 10:08:11 +03003121 BlockDriverState *bs, *iter;
Marcelo Tosattic8c30802012-01-18 14:40:53 +00003122 BlockDriverState *base_bs = NULL;
Stefan Hajnoczif3e69be2014-10-21 12:03:57 +01003123 AioContext *aio_context;
Stefan Hajnoczifd7f8c62012-04-25 16:51:00 +01003124 Error *local_err = NULL;
Jeff Cody13d8cc52014-06-25 15:40:11 -04003125 const char *base_name = NULL;
John Snowcf6320d2018-09-06 09:02:12 -04003126 int job_flags = JOB_DEFAULT;
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00003127
Paolo Bonzini1d809092012-09-28 17:22:59 +02003128 if (!has_on_error) {
3129 on_error = BLOCKDEV_ON_ERROR_REPORT;
3130 }
3131
Alberto Garcia554b6142016-10-28 10:08:11 +03003132 bs = bdrv_lookup_bs(device, device, errp);
Kevin Wolfb6c1bae2016-06-23 14:20:24 +02003133 if (!bs) {
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00003134 return;
3135 }
3136
Kevin Wolfb6c1bae2016-06-23 14:20:24 +02003137 aio_context = bdrv_get_aio_context(bs);
Stefan Hajnoczif3e69be2014-10-21 12:03:57 +01003138 aio_context_acquire(aio_context);
3139
Alberto Garcia312fe092016-10-28 10:08:19 +03003140 if (has_base && has_base_node) {
3141 error_setg(errp, "'base' and 'base-node' cannot be specified "
3142 "at the same time");
3143 goto out;
3144 }
3145
Jeff Cody13d8cc52014-06-25 15:40:11 -04003146 if (has_base) {
Marcelo Tosattic8c30802012-01-18 14:40:53 +00003147 base_bs = bdrv_find_backing_image(bs, base);
3148 if (base_bs == NULL) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01003149 error_setg(errp, QERR_BASE_NOT_FOUND, base);
Stefan Hajnoczif3e69be2014-10-21 12:03:57 +01003150 goto out;
Marcelo Tosattic8c30802012-01-18 14:40:53 +00003151 }
Stefan Hajnoczif3e69be2014-10-21 12:03:57 +01003152 assert(bdrv_get_aio_context(base_bs) == aio_context);
Jeff Cody13d8cc52014-06-25 15:40:11 -04003153 base_name = base;
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00003154 }
3155
Alberto Garcia312fe092016-10-28 10:08:19 +03003156 if (has_base_node) {
3157 base_bs = bdrv_lookup_bs(NULL, base_node, errp);
3158 if (!base_bs) {
3159 goto out;
3160 }
3161 if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) {
3162 error_setg(errp, "Node '%s' is not a backing image of '%s'",
3163 base_node, device);
3164 goto out;
3165 }
3166 assert(bdrv_get_aio_context(base_bs) == aio_context);
3167 base_name = base_bs->filename;
3168 }
3169
Alberto Garcia554b6142016-10-28 10:08:11 +03003170 /* Check for op blockers in the whole chain between bs and base */
3171 for (iter = bs; iter && iter != base_bs; iter = backing_bs(iter)) {
3172 if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) {
3173 goto out;
3174 }
3175 }
3176
Jeff Cody13d8cc52014-06-25 15:40:11 -04003177 /* if we are streaming the entire chain, the result will have no backing
3178 * file, and specifying one is therefore an error */
3179 if (base_bs == NULL && has_backing_file) {
3180 error_setg(errp, "backing file specified, but streaming the "
3181 "entire chain");
Stefan Hajnoczif3e69be2014-10-21 12:03:57 +01003182 goto out;
Jeff Cody13d8cc52014-06-25 15:40:11 -04003183 }
3184
3185 /* backing_file string overrides base bs filename */
3186 base_name = has_backing_file ? backing_file : base_name;
3187
Alberto Garcia23233222016-07-05 17:28:59 +03003188 stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name,
John Snowcf6320d2018-09-06 09:02:12 -04003189 job_flags, has_speed ? speed : 0, on_error, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01003190 if (local_err) {
Stefan Hajnoczifd7f8c62012-04-25 16:51:00 +01003191 error_propagate(errp, local_err);
Stefan Hajnoczif3e69be2014-10-21 12:03:57 +01003192 goto out;
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00003193 }
3194
3195 trace_qmp_block_stream(bs, bs->job);
Stefan Hajnoczif3e69be2014-10-21 12:03:57 +01003196
3197out:
3198 aio_context_release(aio_context);
Stefan Hajnoczi12bd4512012-01-18 14:40:46 +00003199}
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00003200
Alberto Garciafd62c602016-07-05 17:29:00 +03003201void qmp_block_commit(bool has_job_id, const char *job_id, const char *device,
Jeff Cody7676e2c2014-06-30 15:14:15 +02003202 bool has_base, const char *base,
3203 bool has_top, const char *top,
Jeff Cody54e26902014-06-25 15:40:10 -04003204 bool has_backing_file, const char *backing_file,
Jeff Codyed61fc12012-09-27 13:29:16 -04003205 bool has_speed, int64_t speed,
Kevin Wolf0db832f2017-02-20 18:10:05 +01003206 bool has_filter_node_name, const char *filter_node_name,
Jeff Codyed61fc12012-09-27 13:29:16 -04003207 Error **errp)
3208{
3209 BlockDriverState *bs;
Alberto Garcia058223a2016-10-28 10:08:07 +03003210 BlockDriverState *iter;
Jeff Codyed61fc12012-09-27 13:29:16 -04003211 BlockDriverState *base_bs, *top_bs;
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003212 AioContext *aio_context;
Jeff Codyed61fc12012-09-27 13:29:16 -04003213 Error *local_err = NULL;
3214 /* This will be part of the QMP command, if/when the
3215 * BlockdevOnError change for blkmirror makes it in
3216 */
Paolo Bonzini92aa5c62012-09-28 17:22:55 +02003217 BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT;
John Snow53607822018-09-06 09:02:10 -04003218 int job_flags = JOB_DEFAULT;
Jeff Codyed61fc12012-09-27 13:29:16 -04003219
Max Reitz54504662014-04-10 19:36:25 +02003220 if (!has_speed) {
3221 speed = 0;
3222 }
Kevin Wolf0db832f2017-02-20 18:10:05 +01003223 if (!has_filter_node_name) {
3224 filter_node_name = NULL;
3225 }
Max Reitz54504662014-04-10 19:36:25 +02003226
Jeff Cody7676e2c2014-06-30 15:14:15 +02003227 /* Important Note:
3228 * libvirt relies on the DeviceNotFound error class in order to probe for
3229 * live commit feature versions; for this to work, we must make sure to
3230 * perform the device lookup before any generic errors that may occur in a
3231 * scenario in which all optional arguments are omitted. */
Kevin Wolf1d13b162016-06-23 14:20:24 +02003232 bs = qmp_get_root_bs(device, &local_err);
3233 if (!bs) {
3234 bs = bdrv_lookup_bs(device, device, NULL);
3235 if (!bs) {
3236 error_free(local_err);
3237 error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
3238 "Device '%s' not found", device);
3239 } else {
3240 error_propagate(errp, local_err);
3241 }
Jeff Codyed61fc12012-09-27 13:29:16 -04003242 return;
3243 }
Jeff Codyed61fc12012-09-27 13:29:16 -04003244
Kevin Wolf1d13b162016-06-23 14:20:24 +02003245 aio_context = bdrv_get_aio_context(bs);
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003246 aio_context_acquire(aio_context);
3247
Fam Zhengbb000212014-09-11 13:14:00 +08003248 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) {
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003249 goto out;
Fam Zheng628ff682014-05-23 21:29:44 +08003250 }
3251
Jeff Codyed61fc12012-09-27 13:29:16 -04003252 /* default top_bs is the active layer */
3253 top_bs = bs;
3254
Jeff Cody7676e2c2014-06-30 15:14:15 +02003255 if (has_top && top) {
Jeff Codyed61fc12012-09-27 13:29:16 -04003256 if (strcmp(bs->filename, top) != 0) {
3257 top_bs = bdrv_find_backing_image(bs, top);
3258 }
3259 }
3260
3261 if (top_bs == NULL) {
3262 error_setg(errp, "Top image file %s not found", top ? top : "NULL");
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003263 goto out;
Jeff Codyed61fc12012-09-27 13:29:16 -04003264 }
3265
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003266 assert(bdrv_get_aio_context(top_bs) == aio_context);
3267
Jeff Codyd5208c42012-10-16 15:49:10 -04003268 if (has_base && base) {
3269 base_bs = bdrv_find_backing_image(top_bs, base);
3270 } else {
3271 base_bs = bdrv_find_base(top_bs);
3272 }
3273
3274 if (base_bs == NULL) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01003275 error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL");
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003276 goto out;
Jeff Codyd5208c42012-10-16 15:49:10 -04003277 }
3278
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003279 assert(bdrv_get_aio_context(base_bs) == aio_context);
3280
Alberto Garcia058223a2016-10-28 10:08:07 +03003281 for (iter = top_bs; iter != backing_bs(base_bs); iter = backing_bs(iter)) {
3282 if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) {
3283 goto out;
3284 }
Fam Zhengbb000212014-09-11 13:14:00 +08003285 }
3286
Jeff Cody7676e2c2014-06-30 15:14:15 +02003287 /* Do not allow attempts to commit an image into itself */
3288 if (top_bs == base_bs) {
3289 error_setg(errp, "cannot commit an image into itself");
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003290 goto out;
Jeff Cody7676e2c2014-06-30 15:14:15 +02003291 }
3292
Fam Zheng20a63d22013-12-16 14:45:31 +08003293 if (top_bs == bs) {
Jeff Cody54e26902014-06-25 15:40:10 -04003294 if (has_backing_file) {
3295 error_setg(errp, "'backing-file' specified,"
3296 " but 'top' is the active layer");
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003297 goto out;
Jeff Cody54e26902014-06-25 15:40:10 -04003298 }
John Snow47970df2016-10-27 12:06:57 -04003299 commit_active_start(has_job_id ? job_id : NULL, bs, base_bs,
John Snow53607822018-09-06 09:02:10 -04003300 job_flags, speed, on_error,
Fam Zheng78bbd912017-04-21 20:27:04 +08003301 filter_node_name, NULL, NULL, false, &local_err);
Fam Zheng20a63d22013-12-16 14:45:31 +08003302 } else {
Alberto Garcia058223a2016-10-28 10:08:07 +03003303 BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs);
3304 if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) {
3305 goto out;
3306 }
John Snow53607822018-09-06 09:02:10 -04003307 commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, job_flags,
3308 speed, on_error, has_backing_file ? backing_file : NULL,
Kevin Wolf0db832f2017-02-20 18:10:05 +01003309 filter_node_name, &local_err);
Fam Zheng20a63d22013-12-16 14:45:31 +08003310 }
Jeff Codyed61fc12012-09-27 13:29:16 -04003311 if (local_err != NULL) {
3312 error_propagate(errp, local_err);
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003313 goto out;
Jeff Codyed61fc12012-09-27 13:29:16 -04003314 }
Stefan Hajnoczi9e85cd52014-10-21 12:03:59 +01003315
3316out:
3317 aio_context_release(aio_context);
Jeff Codyed61fc12012-09-27 13:29:16 -04003318}
3319
Kevin Wolf62c9e412018-04-19 16:09:52 +02003320static BlockJob *do_drive_backup(DriveBackup *backup, JobTxn *txn,
John Snow111049a2016-11-08 01:50:38 -05003321 Error **errp)
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003322{
3323 BlockDriverState *bs;
3324 BlockDriverState *target_bs;
Ian Mainfc5d3f82013-07-26 11:39:04 -07003325 BlockDriverState *source = NULL;
John Snow111049a2016-11-08 01:50:38 -05003326 BlockJob *job = NULL;
John Snowd58d8452015-04-17 19:49:58 -04003327 BdrvDirtyBitmap *bmap = NULL;
Stefan Hajnoczi761731b2014-10-21 12:03:56 +01003328 AioContext *aio_context;
Max Reitze6641712015-08-26 19:47:48 +02003329 QDict *options = NULL;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003330 Error *local_err = NULL;
Kevin Wolfbb02b652018-04-19 17:54:56 +02003331 int flags, job_flags = JOB_DEFAULT;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003332 int64_t size;
Fam Zhengfc0932f2017-05-03 00:35:53 +08003333 bool set_backing_hd = false;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003334
Pavel Butsykin81206a82016-07-22 11:17:50 +03003335 if (!backup->has_speed) {
3336 backup->speed = 0;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003337 }
Pavel Butsykin81206a82016-07-22 11:17:50 +03003338 if (!backup->has_on_source_error) {
3339 backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003340 }
Pavel Butsykin81206a82016-07-22 11:17:50 +03003341 if (!backup->has_on_target_error) {
3342 backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003343 }
Pavel Butsykin81206a82016-07-22 11:17:50 +03003344 if (!backup->has_mode) {
3345 backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
3346 }
3347 if (!backup->has_job_id) {
3348 backup->job_id = NULL;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003349 }
John Snowb40dacd2018-03-10 03:27:44 -05003350 if (!backup->has_auto_finalize) {
3351 backup->auto_finalize = true;
3352 }
3353 if (!backup->has_auto_dismiss) {
3354 backup->auto_dismiss = true;
3355 }
Pavel Butsykin13b94142016-07-22 11:17:52 +03003356 if (!backup->has_compress) {
3357 backup->compress = false;
3358 }
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003359
Pavel Butsykin81206a82016-07-22 11:17:50 +03003360 bs = qmp_get_root_bs(backup->device, errp);
Kevin Wolfb7e4fa22016-06-23 14:20:24 +02003361 if (!bs) {
John Snow111049a2016-11-08 01:50:38 -05003362 return NULL;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003363 }
3364
Kevin Wolfb7e4fa22016-06-23 14:20:24 +02003365 aio_context = bdrv_get_aio_context(bs);
Stefan Hajnoczi761731b2014-10-21 12:03:56 +01003366 aio_context_acquire(aio_context);
3367
Pavel Butsykin81206a82016-07-22 11:17:50 +03003368 if (!backup->has_format) {
3369 backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ?
3370 NULL : (char*) bs->drv->format_name;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003371 }
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003372
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003373 /* Early check to avoid creating target */
Fam Zheng3718d8a2014-05-23 21:29:43 +08003374 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) {
Stefan Hajnoczi761731b2014-10-21 12:03:56 +01003375 goto out;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003376 }
3377
Kevin Wolf61de4c62016-03-18 17:46:45 +01003378 flags = bs->open_flags | BDRV_O_RDWR;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003379
Ian Mainfc5d3f82013-07-26 11:39:04 -07003380 /* See if we have a backing HD we can use to create our new image
3381 * on top of. */
Pavel Butsykin81206a82016-07-22 11:17:50 +03003382 if (backup->sync == MIRROR_SYNC_MODE_TOP) {
Kevin Wolf760e0062015-06-17 14:55:21 +02003383 source = backing_bs(bs);
Ian Mainfc5d3f82013-07-26 11:39:04 -07003384 if (!source) {
Pavel Butsykin81206a82016-07-22 11:17:50 +03003385 backup->sync = MIRROR_SYNC_MODE_FULL;
Ian Mainfc5d3f82013-07-26 11:39:04 -07003386 }
3387 }
Pavel Butsykin81206a82016-07-22 11:17:50 +03003388 if (backup->sync == MIRROR_SYNC_MODE_NONE) {
Ian Mainfc5d3f82013-07-26 11:39:04 -07003389 source = bs;
Fam Zhengfc0932f2017-05-03 00:35:53 +08003390 flags |= BDRV_O_NO_BACKING;
3391 set_backing_hd = true;
Ian Mainfc5d3f82013-07-26 11:39:04 -07003392 }
3393
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003394 size = bdrv_getlength(bs);
3395 if (size < 0) {
3396 error_setg_errno(errp, -size, "bdrv_getlength failed");
Stefan Hajnoczi761731b2014-10-21 12:03:56 +01003397 goto out;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003398 }
3399
Pavel Butsykin81206a82016-07-22 11:17:50 +03003400 if (backup->mode != NEW_IMAGE_MODE_EXISTING) {
3401 assert(backup->format);
Ian Mainfc5d3f82013-07-26 11:39:04 -07003402 if (source) {
Pavel Butsykin81206a82016-07-22 11:17:50 +03003403 bdrv_img_create(backup->target, backup->format, source->filename,
Ian Mainfc5d3f82013-07-26 11:39:04 -07003404 source->drv->format_name, NULL,
Fam Zheng92172832017-04-21 20:27:01 +08003405 size, flags, false, &local_err);
Ian Mainfc5d3f82013-07-26 11:39:04 -07003406 } else {
Pavel Butsykin81206a82016-07-22 11:17:50 +03003407 bdrv_img_create(backup->target, backup->format, NULL, NULL, NULL,
Fam Zheng92172832017-04-21 20:27:01 +08003408 size, flags, false, &local_err);
Ian Mainfc5d3f82013-07-26 11:39:04 -07003409 }
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003410 }
3411
Markus Armbruster84d18f02014-01-30 15:07:28 +01003412 if (local_err) {
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003413 error_propagate(errp, local_err);
Stefan Hajnoczi761731b2014-10-21 12:03:56 +01003414 goto out;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003415 }
3416
Pavel Butsykin81206a82016-07-22 11:17:50 +03003417 if (backup->format) {
Fam Zhengfc0932f2017-05-03 00:35:53 +08003418 if (!options) {
3419 options = qdict_new();
3420 }
Eric Blake46f5ac22017-04-27 16:58:17 -05003421 qdict_put_str(options, "driver", backup->format);
Max Reitze6641712015-08-26 19:47:48 +02003422 }
3423
Pavel Butsykin81206a82016-07-22 11:17:50 +03003424 target_bs = bdrv_open(backup->target, NULL, options, flags, errp);
Max Reitz5b363932016-05-17 16:41:31 +02003425 if (!target_bs) {
Stefan Hajnoczi761731b2014-10-21 12:03:56 +01003426 goto out;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003427 }
3428
Stefan Hajnoczi761731b2014-10-21 12:03:56 +01003429 bdrv_set_aio_context(target_bs, aio_context);
3430
Fam Zhengfc0932f2017-05-03 00:35:53 +08003431 if (set_backing_hd) {
3432 bdrv_set_backing_hd(target_bs, source, &local_err);
3433 if (local_err) {
3434 bdrv_unref(target_bs);
3435 goto out;
3436 }
3437 }
3438
Pavel Butsykin81206a82016-07-22 11:17:50 +03003439 if (backup->has_bitmap) {
3440 bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap);
John Snowd58d8452015-04-17 19:49:58 -04003441 if (!bmap) {
Pavel Butsykin81206a82016-07-22 11:17:50 +03003442 error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap);
Max Reitz0702d3d2015-11-09 23:39:10 +01003443 bdrv_unref(target_bs);
John Snowd58d8452015-04-17 19:49:58 -04003444 goto out;
3445 }
Vladimir Sementsov-Ogievskiy4f43e952018-03-13 15:34:00 -04003446 if (bdrv_dirty_bitmap_qmp_locked(bmap)) {
3447 error_setg(errp,
3448 "Bitmap '%s' is currently locked and cannot be used for "
3449 "backup", backup->bitmap);
3450 goto out;
3451 }
John Snowd58d8452015-04-17 19:49:58 -04003452 }
John Snowb40dacd2018-03-10 03:27:44 -05003453 if (!backup->auto_finalize) {
Kevin Wolfbb02b652018-04-19 17:54:56 +02003454 job_flags |= JOB_MANUAL_FINALIZE;
John Snowb40dacd2018-03-10 03:27:44 -05003455 }
3456 if (!backup->auto_dismiss) {
Kevin Wolfbb02b652018-04-19 17:54:56 +02003457 job_flags |= JOB_MANUAL_DISMISS;
John Snowb40dacd2018-03-10 03:27:44 -05003458 }
John Snowd58d8452015-04-17 19:49:58 -04003459
John Snow111049a2016-11-08 01:50:38 -05003460 job = backup_job_create(backup->job_id, bs, target_bs, backup->speed,
3461 backup->sync, bmap, backup->compress,
3462 backup->on_source_error, backup->on_target_error,
John Snowb40dacd2018-03-10 03:27:44 -05003463 job_flags, NULL, NULL, txn, &local_err);
Kevin Wolf5c438bc2016-04-14 13:09:53 +02003464 bdrv_unref(target_bs);
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003465 if (local_err != NULL) {
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003466 error_propagate(errp, local_err);
Stefan Hajnoczi761731b2014-10-21 12:03:56 +01003467 goto out;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003468 }
Stefan Hajnoczi761731b2014-10-21 12:03:56 +01003469
3470out:
3471 aio_context_release(aio_context);
John Snow111049a2016-11-08 01:50:38 -05003472 return job;
Stefan Hajnoczi99a9add2013-06-24 17:13:14 +02003473}
3474
Pavel Butsykin81206a82016-07-22 11:17:50 +03003475void qmp_drive_backup(DriveBackup *arg, Error **errp)
John Snow78f51fd2015-11-05 18:13:17 -05003476{
John Snow111049a2016-11-08 01:50:38 -05003477
3478 BlockJob *job;
3479 job = do_drive_backup(arg, NULL, errp);
3480 if (job) {
Kevin Wolfda01ff72018-04-13 17:31:02 +02003481 job_start(&job->job);
John Snow111049a2016-11-08 01:50:38 -05003482 }
John Snow78f51fd2015-11-05 18:13:17 -05003483}
3484
Benoît Canetc13163f2014-01-23 21:31:34 +01003485BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp)
3486{
Alberto Garciad5a8ee62015-04-17 14:52:43 +03003487 return bdrv_named_nodes_list(errp);
Benoît Canetc13163f2014-01-23 21:31:34 +01003488}
3489
Kevin Wolf62c9e412018-04-19 16:09:52 +02003490BlockJob *do_blockdev_backup(BlockdevBackup *backup, JobTxn *txn,
John Snow111049a2016-11-08 01:50:38 -05003491 Error **errp)
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003492{
3493 BlockDriverState *bs;
3494 BlockDriverState *target_bs;
3495 Error *local_err = NULL;
3496 AioContext *aio_context;
John Snow111049a2016-11-08 01:50:38 -05003497 BlockJob *job = NULL;
Kevin Wolfbb02b652018-04-19 17:54:56 +02003498 int job_flags = JOB_DEFAULT;
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003499
Pavel Butsykindc7a4a92016-07-22 11:17:51 +03003500 if (!backup->has_speed) {
3501 backup->speed = 0;
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003502 }
Pavel Butsykindc7a4a92016-07-22 11:17:51 +03003503 if (!backup->has_on_source_error) {
3504 backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT;
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003505 }
Pavel Butsykindc7a4a92016-07-22 11:17:51 +03003506 if (!backup->has_on_target_error) {
3507 backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT;
3508 }
3509 if (!backup->has_job_id) {
3510 backup->job_id = NULL;
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003511 }
John Snowb40dacd2018-03-10 03:27:44 -05003512 if (!backup->has_auto_finalize) {
3513 backup->auto_finalize = true;
3514 }
3515 if (!backup->has_auto_dismiss) {
3516 backup->auto_dismiss = true;
3517 }
Pavel Butsykin3b7b1232016-07-22 11:17:53 +03003518 if (!backup->has_compress) {
3519 backup->compress = false;
3520 }
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003521
Vladimir Sementsov-Ogievskiy930fe172018-07-02 15:46:29 -04003522 bs = bdrv_lookup_bs(backup->device, backup->device, errp);
Kevin Wolfcef34ee2016-06-23 14:20:24 +02003523 if (!bs) {
John Snow111049a2016-11-08 01:50:38 -05003524 return NULL;
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003525 }
3526
Kevin Wolfcef34ee2016-06-23 14:20:24 +02003527 aio_context = bdrv_get_aio_context(bs);
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003528 aio_context_acquire(aio_context);
3529
Pavel Butsykindc7a4a92016-07-22 11:17:51 +03003530 target_bs = bdrv_lookup_bs(backup->target, backup->target, errp);
Fam Zheng0d978912016-05-23 10:19:35 +08003531 if (!target_bs) {
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003532 goto out;
3533 }
Max Reitz5433c242015-10-19 17:53:29 +02003534
Fam Zhengefd75562016-05-23 10:19:36 +08003535 if (bdrv_get_aio_context(target_bs) != aio_context) {
3536 if (!bdrv_has_blk(target_bs)) {
3537 /* The target BDS is not attached, we can safely move it to another
3538 * AioContext. */
3539 bdrv_set_aio_context(target_bs, aio_context);
3540 } else {
3541 error_setg(errp, "Target is attached to a different thread from "
3542 "source.");
3543 goto out;
3544 }
3545 }
John Snowb40dacd2018-03-10 03:27:44 -05003546 if (!backup->auto_finalize) {
Kevin Wolfbb02b652018-04-19 17:54:56 +02003547 job_flags |= JOB_MANUAL_FINALIZE;
John Snowb40dacd2018-03-10 03:27:44 -05003548 }
3549 if (!backup->auto_dismiss) {
Kevin Wolfbb02b652018-04-19 17:54:56 +02003550 job_flags |= JOB_MANUAL_DISMISS;
John Snowb40dacd2018-03-10 03:27:44 -05003551 }
John Snow111049a2016-11-08 01:50:38 -05003552 job = backup_job_create(backup->job_id, bs, target_bs, backup->speed,
3553 backup->sync, NULL, backup->compress,
3554 backup->on_source_error, backup->on_target_error,
John Snowb40dacd2018-03-10 03:27:44 -05003555 job_flags, NULL, NULL, txn, &local_err);
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003556 if (local_err != NULL) {
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003557 error_propagate(errp, local_err);
3558 }
3559out:
3560 aio_context_release(aio_context);
John Snow111049a2016-11-08 01:50:38 -05003561 return job;
Fam Zhengc29c1dd2014-12-18 18:37:05 +08003562}
3563
Pavel Butsykindc7a4a92016-07-22 11:17:51 +03003564void qmp_blockdev_backup(BlockdevBackup *arg, Error **errp)
John Snow78f51fd2015-11-05 18:13:17 -05003565{
John Snow111049a2016-11-08 01:50:38 -05003566 BlockJob *job;
3567 job = do_blockdev_backup(arg, NULL, errp);
3568 if (job) {
Kevin Wolfda01ff72018-04-13 17:31:02 +02003569 job_start(&job->job);
John Snow111049a2016-11-08 01:50:38 -05003570 }
John Snow78f51fd2015-11-05 18:13:17 -05003571}
3572
Fam Zheng4193cdd2015-12-24 12:45:03 +08003573/* Parameter check and block job starting for drive mirroring.
3574 * Caller should hold @device and @target's aio context (must be the same).
3575 **/
Alberto Garcia71aa9862016-07-05 17:28:57 +03003576static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs,
Fam Zheng4193cdd2015-12-24 12:45:03 +08003577 BlockDriverState *target,
3578 bool has_replaces, const char *replaces,
3579 enum MirrorSyncMode sync,
Max Reitz274fcce2016-06-10 20:57:47 +02003580 BlockMirrorBackingMode backing_mode,
Fam Zheng4193cdd2015-12-24 12:45:03 +08003581 bool has_speed, int64_t speed,
3582 bool has_granularity, uint32_t granularity,
3583 bool has_buf_size, int64_t buf_size,
3584 bool has_on_source_error,
3585 BlockdevOnError on_source_error,
3586 bool has_on_target_error,
3587 BlockdevOnError on_target_error,
3588 bool has_unmap, bool unmap,
Kevin Wolf6cdbceb2017-02-20 18:10:05 +01003589 bool has_filter_node_name,
3590 const char *filter_node_name,
Max Reitz481deba2018-06-13 20:18:22 +02003591 bool has_copy_mode, MirrorCopyMode copy_mode,
Fam Zheng4193cdd2015-12-24 12:45:03 +08003592 Error **errp)
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003593{
John Snowa1999b32018-09-06 09:02:11 -04003594 int job_flags = JOB_DEFAULT;
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003595
3596 if (!has_speed) {
3597 speed = 0;
3598 }
Paolo Bonzinib952b552012-10-18 16:49:28 +02003599 if (!has_on_source_error) {
3600 on_source_error = BLOCKDEV_ON_ERROR_REPORT;
3601 }
3602 if (!has_on_target_error) {
3603 on_target_error = BLOCKDEV_ON_ERROR_REPORT;
3604 }
Paolo Bonzinieee13df2013-01-21 17:09:46 +01003605 if (!has_granularity) {
3606 granularity = 0;
3607 }
Paolo Bonzini08e4ed62013-01-22 09:03:13 +01003608 if (!has_buf_size) {
Wen Congyang48ac0a42015-05-15 15:51:36 +08003609 buf_size = 0;
Paolo Bonzini08e4ed62013-01-22 09:03:13 +01003610 }
Fam Zheng0fc9f8e2015-06-08 13:56:08 +08003611 if (!has_unmap) {
3612 unmap = true;
3613 }
Kevin Wolf6cdbceb2017-02-20 18:10:05 +01003614 if (!has_filter_node_name) {
3615 filter_node_name = NULL;
3616 }
Max Reitz481deba2018-06-13 20:18:22 +02003617 if (!has_copy_mode) {
3618 copy_mode = MIRROR_COPY_MODE_BACKGROUND;
3619 }
Paolo Bonzini08e4ed62013-01-22 09:03:13 +01003620
Paolo Bonzinieee13df2013-01-21 17:09:46 +01003621 if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01003622 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity",
3623 "a value in range [512B, 64MB]");
Paolo Bonzinieee13df2013-01-21 17:09:46 +01003624 return;
3625 }
3626 if (granularity & (granularity - 1)) {
Markus Armbrusterc6bd8c72015-03-17 11:54:50 +01003627 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity",
3628 "power of 2");
Paolo Bonzinieee13df2013-01-21 17:09:46 +01003629 return;
3630 }
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003631
Fam Zheng4193cdd2015-12-24 12:45:03 +08003632 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) {
3633 return;
3634 }
Fam Zhenge40e5022015-12-24 12:45:04 +08003635 if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) {
3636 return;
3637 }
Fam Zheng4193cdd2015-12-24 12:45:03 +08003638
3639 if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) {
3640 sync = MIRROR_SYNC_MODE_FULL;
3641 }
3642
3643 /* pass the node name to replace to mirror start since it's loose coupling
3644 * and will allow to check whether the node still exist at mirror completion
3645 */
Alberto Garcia71aa9862016-07-05 17:28:57 +03003646 mirror_start(job_id, bs, target,
John Snowa1999b32018-09-06 09:02:11 -04003647 has_replaces ? replaces : NULL, job_flags,
Max Reitz274fcce2016-06-10 20:57:47 +02003648 speed, granularity, buf_size, sync, backing_mode,
Kevin Wolf6cdbceb2017-02-20 18:10:05 +01003649 on_source_error, on_target_error, unmap, filter_node_name,
Max Reitz481deba2018-06-13 20:18:22 +02003650 copy_mode, errp);
Fam Zheng4193cdd2015-12-24 12:45:03 +08003651}
3652
Eric Blakefaecd402016-07-14 16:37:58 -06003653void qmp_drive_mirror(DriveMirror *arg, Error **errp)
Fam Zheng4193cdd2015-12-24 12:45:03 +08003654{
3655 BlockDriverState *bs;
Fam Zheng4193cdd2015-12-24 12:45:03 +08003656 BlockDriverState *source, *target_bs;
3657 AioContext *aio_context;
Max Reitz274fcce2016-06-10 20:57:47 +02003658 BlockMirrorBackingMode backing_mode;
Fam Zheng4193cdd2015-12-24 12:45:03 +08003659 Error *local_err = NULL;
3660 QDict *options = NULL;
3661 int flags;
3662 int64_t size;
Eric Blakefaecd402016-07-14 16:37:58 -06003663 const char *format = arg->format;
Fam Zheng4193cdd2015-12-24 12:45:03 +08003664
Kevin Wolf0524e932016-06-23 14:20:24 +02003665 bs = qmp_get_root_bs(arg->device, errp);
3666 if (!bs) {
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003667 return;
3668 }
3669
Paolo Bonzinicb2af912018-02-07 17:29:20 +01003670 /* Early check to avoid creating target */
3671 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) {
3672 return;
3673 }
3674
Kevin Wolf0524e932016-06-23 14:20:24 +02003675 aio_context = bdrv_get_aio_context(bs);
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003676 aio_context_acquire(aio_context);
3677
Eric Blakefaecd402016-07-14 16:37:58 -06003678 if (!arg->has_mode) {
3679 arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
Fam Zheng4193cdd2015-12-24 12:45:03 +08003680 }
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003681
Eric Blakefaecd402016-07-14 16:37:58 -06003682 if (!arg->has_format) {
3683 format = (arg->mode == NEW_IMAGE_MODE_EXISTING
3684 ? NULL : bs->drv->format_name);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003685 }
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003686
Kevin Wolf61de4c62016-03-18 17:46:45 +01003687 flags = bs->open_flags | BDRV_O_RDWR;
Kevin Wolf760e0062015-06-17 14:55:21 +02003688 source = backing_bs(bs);
Eric Blakefaecd402016-07-14 16:37:58 -06003689 if (!source && arg->sync == MIRROR_SYNC_MODE_TOP) {
3690 arg->sync = MIRROR_SYNC_MODE_FULL;
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003691 }
Eric Blakefaecd402016-07-14 16:37:58 -06003692 if (arg->sync == MIRROR_SYNC_MODE_NONE) {
Max Reitz117e0c82013-11-25 20:28:55 +01003693 source = bs;
3694 }
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003695
Stefan Hajnocziac3c5d82013-06-24 17:13:13 +02003696 size = bdrv_getlength(bs);
3697 if (size < 0) {
3698 error_setg_errno(errp, -size, "bdrv_getlength failed");
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003699 goto out;
Stefan Hajnocziac3c5d82013-06-24 17:13:13 +02003700 }
3701
Eric Blakefaecd402016-07-14 16:37:58 -06003702 if (arg->has_replaces) {
Benoît Canet09158f02014-06-27 18:25:25 +02003703 BlockDriverState *to_replace_bs;
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003704 AioContext *replace_aio_context;
3705 int64_t replace_size;
Benoît Canet09158f02014-06-27 18:25:25 +02003706
Eric Blakefaecd402016-07-14 16:37:58 -06003707 if (!arg->has_node_name) {
Benoît Canet09158f02014-06-27 18:25:25 +02003708 error_setg(errp, "a node-name must be provided when replacing a"
3709 " named node of the graph");
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003710 goto out;
Benoît Canet09158f02014-06-27 18:25:25 +02003711 }
3712
Eric Blakefaecd402016-07-14 16:37:58 -06003713 to_replace_bs = check_to_replace_node(bs, arg->replaces, &local_err);
Benoît Canet09158f02014-06-27 18:25:25 +02003714
3715 if (!to_replace_bs) {
3716 error_propagate(errp, local_err);
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003717 goto out;
Benoît Canet09158f02014-06-27 18:25:25 +02003718 }
3719
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003720 replace_aio_context = bdrv_get_aio_context(to_replace_bs);
3721 aio_context_acquire(replace_aio_context);
3722 replace_size = bdrv_getlength(to_replace_bs);
3723 aio_context_release(replace_aio_context);
3724
3725 if (size != replace_size) {
Benoît Canet09158f02014-06-27 18:25:25 +02003726 error_setg(errp, "cannot replace image with a mirror image of "
3727 "different size");
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003728 goto out;
Benoît Canet09158f02014-06-27 18:25:25 +02003729 }
3730 }
3731
Eric Blakefaecd402016-07-14 16:37:58 -06003732 if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) {
Max Reitz274fcce2016-06-10 20:57:47 +02003733 backing_mode = MIRROR_SOURCE_BACKING_CHAIN;
3734 } else {
3735 backing_mode = MIRROR_OPEN_BACKING_CHAIN;
3736 }
3737
John Snow2a32c6e2017-07-17 20:34:21 -04003738 /* Don't open backing image in create() */
3739 flags |= BDRV_O_NO_BACKING;
3740
Eric Blakefaecd402016-07-14 16:37:58 -06003741 if ((arg->sync == MIRROR_SYNC_MODE_FULL || !source)
3742 && arg->mode != NEW_IMAGE_MODE_EXISTING)
Max Reitz14526862013-11-06 19:50:44 +01003743 {
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003744 /* create new image w/o backing file */
Max Reitze6641712015-08-26 19:47:48 +02003745 assert(format);
Eric Blakefaecd402016-07-14 16:37:58 -06003746 bdrv_img_create(arg->target, format,
Fam Zheng92172832017-04-21 20:27:01 +08003747 NULL, NULL, NULL, size, flags, false, &local_err);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003748 } else {
Eric Blakefaecd402016-07-14 16:37:58 -06003749 switch (arg->mode) {
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003750 case NEW_IMAGE_MODE_EXISTING:
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003751 break;
3752 case NEW_IMAGE_MODE_ABSOLUTE_PATHS:
3753 /* create new image with backing file */
Eric Blakefaecd402016-07-14 16:37:58 -06003754 bdrv_img_create(arg->target, format,
Luiz Capitulinocf8f2422012-11-30 10:52:08 -02003755 source->filename,
3756 source->drv->format_name,
Fam Zheng92172832017-04-21 20:27:01 +08003757 NULL, size, flags, false, &local_err);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003758 break;
3759 default:
3760 abort();
3761 }
3762 }
3763
Markus Armbruster84d18f02014-01-30 15:07:28 +01003764 if (local_err) {
Luiz Capitulinocf8f2422012-11-30 10:52:08 -02003765 error_propagate(errp, local_err);
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003766 goto out;
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003767 }
3768
Max Reitze6641712015-08-26 19:47:48 +02003769 options = qdict_new();
Eric Blakefaecd402016-07-14 16:37:58 -06003770 if (arg->has_node_name) {
Eric Blake46f5ac22017-04-27 16:58:17 -05003771 qdict_put_str(options, "node-name", arg->node_name);
Benoît Canet4c828dc2014-06-16 12:00:55 +02003772 }
Max Reitze6641712015-08-26 19:47:48 +02003773 if (format) {
Eric Blake46f5ac22017-04-27 16:58:17 -05003774 qdict_put_str(options, "driver", format);
Max Reitze6641712015-08-26 19:47:48 +02003775 }
Benoît Canet4c828dc2014-06-16 12:00:55 +02003776
Paolo Bonzinib812f672013-01-21 17:09:43 +01003777 /* Mirroring takes care of copy-on-write using the source's backing
3778 * file.
3779 */
John Snow2a32c6e2017-07-17 20:34:21 -04003780 target_bs = bdrv_open(arg->target, NULL, options, flags, errp);
Max Reitz5b363932016-05-17 16:41:31 +02003781 if (!target_bs) {
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003782 goto out;
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003783 }
3784
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003785 bdrv_set_aio_context(target_bs, aio_context);
3786
Eric Blakefaecd402016-07-14 16:37:58 -06003787 blockdev_mirror_common(arg->has_job_id ? arg->job_id : NULL, bs, target_bs,
3788 arg->has_replaces, arg->replaces, arg->sync,
3789 backing_mode, arg->has_speed, arg->speed,
3790 arg->has_granularity, arg->granularity,
3791 arg->has_buf_size, arg->buf_size,
3792 arg->has_on_source_error, arg->on_source_error,
3793 arg->has_on_target_error, arg->on_target_error,
3794 arg->has_unmap, arg->unmap,
Kevin Wolf6cdbceb2017-02-20 18:10:05 +01003795 false, NULL,
Max Reitz481deba2018-06-13 20:18:22 +02003796 arg->has_copy_mode, arg->copy_mode,
Fam Zheng4193cdd2015-12-24 12:45:03 +08003797 &local_err);
Kevin Wolfe253f4b2016-04-12 16:17:41 +02003798 bdrv_unref(target_bs);
Eduardo Habkost621ff942016-06-13 18:57:56 -03003799 error_propagate(errp, local_err);
Stefan Hajnoczi5a7e7a02014-10-21 12:03:58 +01003800out:
3801 aio_context_release(aio_context);
Paolo Bonzinid9b902d2012-10-18 16:49:24 +02003802}
3803
Alberto Garcia71aa9862016-07-05 17:28:57 +03003804void qmp_blockdev_mirror(bool has_job_id, const char *job_id,
3805 const char *device, const char *target,
Fam Zhengdf925622015-12-24 12:45:05 +08003806 bool has_replaces, const char *replaces,
3807 MirrorSyncMode sync,
3808 bool has_speed, int64_t speed,
3809 bool has_granularity, uint32_t granularity,
3810 bool has_buf_size, int64_t buf_size,
3811 bool has_on_source_error,
3812 BlockdevOnError on_source_error,
3813 bool has_on_target_error,
3814 BlockdevOnError on_target_error,
Kevin Wolf6cdbceb2017-02-20 18:10:05 +01003815 bool has_filter_node_name,
3816 const char *filter_node_name,
Max Reitz481deba2018-06-13 20:18:22 +02003817 bool has_copy_mode, MirrorCopyMode copy_mode,
Fam Zhengdf925622015-12-24 12:45:05 +08003818 Error **errp)
3819{
3820 BlockDriverState *bs;
Fam Zhengdf925622015-12-24 12:45:05 +08003821 BlockDriverState *target_bs;
3822 AioContext *aio_context;
Max Reitz274fcce2016-06-10 20:57:47 +02003823 BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN;
Fam Zhengdf925622015-12-24 12:45:05 +08003824 Error *local_err = NULL;
3825
Kevin Wolf07eec652016-06-23 14:20:24 +02003826 bs = qmp_get_root_bs(device, errp);
Fam Zhengdf925622015-12-24 12:45:05 +08003827 if (!bs) {
Fam Zhengdf925622015-12-24 12:45:05 +08003828 return;
3829 }
3830
3831 target_bs = bdrv_lookup_bs(target, target, errp);
3832 if (!target_bs) {
3833 return;
3834 }
3835
3836 aio_context = bdrv_get_aio_context(bs);
3837 aio_context_acquire(aio_context);
3838
Fam Zhengdf925622015-12-24 12:45:05 +08003839 bdrv_set_aio_context(target_bs, aio_context);
3840
Alberto Garcia71aa9862016-07-05 17:28:57 +03003841 blockdev_mirror_common(has_job_id ? job_id : NULL, bs, target_bs,
Max Reitz274fcce2016-06-10 20:57:47 +02003842 has_replaces, replaces, sync, backing_mode,
Fam Zhengdf925622015-12-24 12:45:05 +08003843 has_speed, speed,
3844 has_granularity, granularity,
3845 has_buf_size, buf_size,
3846 has_on_source_error, on_source_error,
3847 has_on_target_error, on_target_error,
3848 true, true,
Kevin Wolf6cdbceb2017-02-20 18:10:05 +01003849 has_filter_node_name, filter_node_name,
Max Reitz481deba2018-06-13 20:18:22 +02003850 has_copy_mode, copy_mode,
Fam Zhengdf925622015-12-24 12:45:05 +08003851 &local_err);
Eduardo Habkost621ff942016-06-13 18:57:56 -03003852 error_propagate(errp, local_err);
Fam Zhengdf925622015-12-24 12:45:05 +08003853
3854 aio_context_release(aio_context);
3855}
3856
Alberto Garcia3ddf3ef2016-07-05 17:28:55 +03003857/* Get a block job using its ID and acquire its AioContext */
3858static BlockJob *find_block_job(const char *id, AioContext **aio_context,
Markus Armbruster24d6bff2015-01-29 10:36:58 +01003859 Error **errp)
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00003860{
Alberto Garcia3ddf3ef2016-07-05 17:28:55 +03003861 BlockJob *job;
3862
3863 assert(id != NULL);
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00003864
Max Reitz5433c242015-10-19 17:53:29 +02003865 *aio_context = NULL;
3866
Alberto Garcia3ddf3ef2016-07-05 17:28:55 +03003867 job = block_job_get(id);
3868
3869 if (!job) {
3870 error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE,
3871 "Block job '%s' not found", id);
3872 return NULL;
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00003873 }
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003874
Alberto Garcia3ddf3ef2016-07-05 17:28:55 +03003875 *aio_context = blk_get_aio_context(job->blk);
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003876 aio_context_acquire(*aio_context);
3877
Alberto Garcia3ddf3ef2016-07-05 17:28:55 +03003878 return job;
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00003879}
3880
Stefan Hajnoczi882ec7c2012-04-25 16:51:02 +01003881void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp)
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00003882{
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003883 AioContext *aio_context;
Markus Armbruster24d6bff2015-01-29 10:36:58 +01003884 BlockJob *job = find_block_job(device, &aio_context, errp);
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00003885
3886 if (!job) {
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00003887 return;
3888 }
3889
Stefan Hajnoczi882ec7c2012-04-25 16:51:02 +01003890 block_job_set_speed(job, speed, errp);
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003891 aio_context_release(aio_context);
Stefan Hajnoczi2d47c6e2012-01-18 14:40:47 +00003892}
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00003893
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02003894void qmp_block_job_cancel(const char *device,
3895 bool has_force, bool force, Error **errp)
3896{
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003897 AioContext *aio_context;
Markus Armbruster24d6bff2015-01-29 10:36:58 +01003898 BlockJob *job = find_block_job(device, &aio_context, errp);
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02003899
3900 if (!job) {
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02003901 return;
3902 }
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003903
3904 if (!has_force) {
3905 force = false;
3906 }
3907
Kevin Wolfb15de822018-04-18 17:10:26 +02003908 if (job_user_paused(&job->job) && !force) {
Cole Robinsonf231b882014-03-21 19:42:26 -04003909 error_setg(errp, "The block job for device '%s' is currently paused",
3910 device);
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003911 goto out;
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02003912 }
3913
3914 trace_qmp_block_job_cancel(job);
Kevin Wolf3d70ff52018-04-24 16:13:52 +02003915 job_user_cancel(&job->job, force, errp);
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003916out:
3917 aio_context_release(aio_context);
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02003918}
3919
3920void qmp_block_job_pause(const char *device, Error **errp)
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00003921{
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003922 AioContext *aio_context;
Markus Armbruster24d6bff2015-01-29 10:36:58 +01003923 BlockJob *job = find_block_job(device, &aio_context, errp);
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00003924
John Snow0ec4dfb2018-03-10 03:27:32 -05003925 if (!job) {
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00003926 return;
3927 }
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02003928
3929 trace_qmp_block_job_pause(job);
Kevin Wolfb15de822018-04-18 17:10:26 +02003930 job_user_pause(&job->job, errp);
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003931 aio_context_release(aio_context);
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02003932}
3933
3934void qmp_block_job_resume(const char *device, Error **errp)
3935{
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003936 AioContext *aio_context;
Markus Armbruster24d6bff2015-01-29 10:36:58 +01003937 BlockJob *job = find_block_job(device, &aio_context, errp);
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02003938
John Snow0ec4dfb2018-03-10 03:27:32 -05003939 if (!job) {
Paolo Bonzini8acc72a2012-09-28 17:22:50 +02003940 return;
3941 }
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00003942
Paolo Bonzini6e37fb82012-09-28 17:22:51 +02003943 trace_qmp_block_job_resume(job);
Kevin Wolfb15de822018-04-18 17:10:26 +02003944 job_user_resume(&job->job, errp);
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003945 aio_context_release(aio_context);
Stefan Hajnoczi370521a2012-01-18 14:40:48 +00003946}
Stefan Hajnoczifb5458c2012-01-18 14:40:49 +00003947
Paolo Bonziniaeae8832012-10-18 16:49:21 +02003948void qmp_block_job_complete(const char *device, Error **errp)
3949{
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003950 AioContext *aio_context;
Markus Armbruster24d6bff2015-01-29 10:36:58 +01003951 BlockJob *job = find_block_job(device, &aio_context, errp);
Paolo Bonziniaeae8832012-10-18 16:49:21 +02003952
3953 if (!job) {
Paolo Bonziniaeae8832012-10-18 16:49:21 +02003954 return;
3955 }
3956
3957 trace_qmp_block_job_complete(job);
Kevin Wolf3453d972018-04-23 12:24:16 +02003958 job_complete(&job->job, errp);
Stefan Hajnoczi3d948cd2014-10-21 12:03:50 +01003959 aio_context_release(aio_context);
Paolo Bonziniaeae8832012-10-18 16:49:21 +02003960}
3961
John Snow11b61fb2018-03-10 03:27:43 -05003962void qmp_block_job_finalize(const char *id, Error **errp)
3963{
3964 AioContext *aio_context;
3965 BlockJob *job = find_block_job(id, &aio_context, errp);
3966
3967 if (!job) {
3968 return;
3969 }
3970
3971 trace_qmp_block_job_finalize(job);
Kevin Wolf7eaa8fb2018-04-23 16:06:26 +02003972 job_finalize(&job->job, errp);
John Snow11b61fb2018-03-10 03:27:43 -05003973 aio_context_release(aio_context);
3974}
3975
John Snow75f71052018-03-10 03:27:36 -05003976void qmp_block_job_dismiss(const char *id, Error **errp)
3977{
3978 AioContext *aio_context;
Kevin Wolf5f9a6a02018-04-24 17:10:12 +02003979 BlockJob *bjob = find_block_job(id, &aio_context, errp);
3980 Job *job;
John Snow75f71052018-03-10 03:27:36 -05003981
Kevin Wolf5f9a6a02018-04-24 17:10:12 +02003982 if (!bjob) {
John Snow75f71052018-03-10 03:27:36 -05003983 return;
3984 }
3985
Kevin Wolf5f9a6a02018-04-24 17:10:12 +02003986 trace_qmp_block_job_dismiss(bjob);
3987 job = &bjob->job;
3988 job_dismiss(&job, errp);
John Snow75f71052018-03-10 03:27:36 -05003989 aio_context_release(aio_context);
3990}
3991
Jeff Codyfa40e652014-07-01 09:52:16 +02003992void qmp_change_backing_file(const char *device,
3993 const char *image_node_name,
3994 const char *backing_file,
3995 Error **errp)
3996{
3997 BlockDriverState *bs = NULL;
Stefan Hajnoczi729962f2014-11-19 14:19:45 +00003998 AioContext *aio_context;
Jeff Codyfa40e652014-07-01 09:52:16 +02003999 BlockDriverState *image_bs = NULL;
4000 Error *local_err = NULL;
4001 bool ro;
4002 int open_flags;
4003 int ret;
4004
Kevin Wolf7b5dca32016-06-23 14:20:24 +02004005 bs = qmp_get_root_bs(device, errp);
4006 if (!bs) {
Jeff Codyfa40e652014-07-01 09:52:16 +02004007 return;
4008 }
4009
Kevin Wolf7b5dca32016-06-23 14:20:24 +02004010 aio_context = bdrv_get_aio_context(bs);
Stefan Hajnoczi729962f2014-11-19 14:19:45 +00004011 aio_context_acquire(aio_context);
4012
Jeff Codyfa40e652014-07-01 09:52:16 +02004013 image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err);
4014 if (local_err) {
4015 error_propagate(errp, local_err);
Stefan Hajnoczi729962f2014-11-19 14:19:45 +00004016 goto out;
Jeff Codyfa40e652014-07-01 09:52:16 +02004017 }
4018
4019 if (!image_bs) {
4020 error_setg(errp, "image file not found");
Stefan Hajnoczi729962f2014-11-19 14:19:45 +00004021 goto out;
Jeff Codyfa40e652014-07-01 09:52:16 +02004022 }
4023
4024 if (bdrv_find_base(image_bs) == image_bs) {
4025 error_setg(errp, "not allowing backing file change on an image "
4026 "without a backing file");
Stefan Hajnoczi729962f2014-11-19 14:19:45 +00004027 goto out;
Jeff Codyfa40e652014-07-01 09:52:16 +02004028 }
4029
4030 /* even though we are not necessarily operating on bs, we need it to
4031 * determine if block ops are currently prohibited on the chain */
4032 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) {
Stefan Hajnoczi729962f2014-11-19 14:19:45 +00004033 goto out;
Jeff Codyfa40e652014-07-01 09:52:16 +02004034 }
4035
4036 /* final sanity check */
4037 if (!bdrv_chain_contains(bs, image_bs)) {
4038 error_setg(errp, "'%s' and image file are not in the same chain",
4039 device);
Stefan Hajnoczi729962f2014-11-19 14:19:45 +00004040 goto out;
Jeff Codyfa40e652014-07-01 09:52:16 +02004041 }
4042
4043 /* if not r/w, reopen to make r/w */
4044 open_flags = image_bs->open_flags;
4045 ro = bdrv_is_read_only(image_bs);
4046
4047 if (ro) {
4048 bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err);
4049 if (local_err) {
4050 error_propagate(errp, local_err);
Stefan Hajnoczi729962f2014-11-19 14:19:45 +00004051 goto out;
Jeff Codyfa40e652014-07-01 09:52:16 +02004052 }
4053 }
4054
4055 ret = bdrv_change_backing_file(image_bs, backing_file,
4056 image_bs->drv ? image_bs->drv->format_name : "");
4057
4058 if (ret < 0) {
4059 error_setg_errno(errp, -ret, "Could not change backing file to '%s'",
4060 backing_file);
4061 /* don't exit here, so we can try to restore open flags if
4062 * appropriate */
4063 }
4064
4065 if (ro) {
4066 bdrv_reopen(image_bs, open_flags, &local_err);
Eduardo Habkost621ff942016-06-13 18:57:56 -03004067 error_propagate(errp, local_err);
Jeff Codyfa40e652014-07-01 09:52:16 +02004068 }
Stefan Hajnoczi729962f2014-11-19 14:19:45 +00004069
4070out:
4071 aio_context_release(aio_context);
Jeff Codyfa40e652014-07-01 09:52:16 +02004072}
4073
Kevin Wolfabb21ac2016-02-23 17:33:24 +01004074void hmp_drive_add_node(Monitor *mon, const char *optstr)
4075{
4076 QemuOpts *opts;
4077 QDict *qdict;
4078 Error *local_err = NULL;
4079
4080 opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false);
4081 if (!opts) {
4082 return;
4083 }
4084
4085 qdict = qemu_opts_to_qdict(opts, NULL);
4086
4087 if (!qdict_get_try_str(qdict, "node-name")) {
Marc-André Lureaucb3e7f02018-04-19 17:01:43 +02004088 qobject_unref(qdict);
Kevin Wolfabb21ac2016-02-23 17:33:24 +01004089 error_report("'node-name' needs to be specified");
4090 goto out;
4091 }
4092
4093 BlockDriverState *bs = bds_tree_init(qdict, &local_err);
4094 if (!bs) {
4095 error_report_err(local_err);
4096 goto out;
4097 }
4098
4099 QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list);
4100
4101out:
4102 qemu_opts_del(opts);
4103}
4104
Kevin Wolfd26c9a12013-09-23 15:26:03 +02004105void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
4106{
Max Reitzbe4b67b2015-10-19 17:53:09 +02004107 BlockDriverState *bs;
Kevin Wolfd26c9a12013-09-23 15:26:03 +02004108 QObject *obj;
Daniel P. Berrange7d5e1992016-09-30 15:45:28 +01004109 Visitor *v = qobject_output_visitor_new(&obj);
Kevin Wolfd26c9a12013-09-23 15:26:03 +02004110 QDict *qdict;
Kevin Wolfd26c9a12013-09-23 15:26:03 +02004111 Error *local_err = NULL;
4112
Eric Blake3b098d52016-06-09 10:48:43 -06004113 visit_type_BlockdevOptions(v, NULL, &options, &local_err);
Markus Armbruster84d18f02014-01-30 15:07:28 +01004114 if (local_err) {
Kevin Wolfd26c9a12013-09-23 15:26:03 +02004115 error_propagate(errp, local_err);
4116 goto fail;
4117 }
4118
Eric Blake3b098d52016-06-09 10:48:43 -06004119 visit_complete(v, &obj);
Max Reitz7dc847e2018-02-24 16:40:29 +01004120 qdict = qobject_to(QDict, obj);
Kevin Wolfd26c9a12013-09-23 15:26:03 +02004121
4122 qdict_flatten(qdict);
4123
Kevin Wolf9ec88732016-09-21 14:56:11 +02004124 if (!qdict_get_try_str(qdict, "node-name")) {
4125 error_setg(errp, "'node-name' must be specified for the root node");
4126 goto fail;
Kevin Wolfd26c9a12013-09-23 15:26:03 +02004127 }
4128
Kevin Wolf9ec88732016-09-21 14:56:11 +02004129 bs = bds_tree_init(qdict, errp);
4130 if (!bs) {
4131 goto fail;
4132 }
4133
4134 QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list);
4135
Kevin Wolfd26c9a12013-09-23 15:26:03 +02004136fail:
Eric Blake3b098d52016-06-09 10:48:43 -06004137 visit_free(v);
Kevin Wolfd26c9a12013-09-23 15:26:03 +02004138}
4139
Markus Armbruster79b7a772017-03-21 17:53:28 +01004140void qmp_blockdev_del(const char *node_name, Error **errp)
Alberto Garcia81b936a2015-11-02 16:51:55 +02004141{
4142 AioContext *aio_context;
Alberto Garcia81b936a2015-11-02 16:51:55 +02004143 BlockDriverState *bs;
4144
Kevin Wolf9ec88732016-09-21 14:56:11 +02004145 bs = bdrv_find_node(node_name);
4146 if (!bs) {
4147 error_setg(errp, "Cannot find node %s", node_name);
Alberto Garcia81b936a2015-11-02 16:51:55 +02004148 return;
4149 }
Kevin Wolf9ec88732016-09-21 14:56:11 +02004150 if (bdrv_has_blk(bs)) {
4151 error_setg(errp, "Node %s is in use", node_name);
4152 return;
Alberto Garcia81b936a2015-11-02 16:51:55 +02004153 }
Kevin Wolf9ec88732016-09-21 14:56:11 +02004154 aio_context = bdrv_get_aio_context(bs);
Alberto Garcia81b936a2015-11-02 16:51:55 +02004155 aio_context_acquire(aio_context);
4156
Kevin Wolf9ec88732016-09-21 14:56:11 +02004157 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) {
4158 goto out;
Alberto Garcia81b936a2015-11-02 16:51:55 +02004159 }
4160
Kevin Wolf9ec88732016-09-21 14:56:11 +02004161 if (!bs->monitor_list.tqe_prev) {
4162 error_setg(errp, "Node %s is not owned by the monitor",
4163 bs->node_name);
4164 goto out;
Alberto Garcia81b936a2015-11-02 16:51:55 +02004165 }
4166
Kevin Wolf9ec88732016-09-21 14:56:11 +02004167 if (bs->refcnt > 1) {
4168 error_setg(errp, "Block device %s is in use",
4169 bdrv_get_device_or_node_name(bs));
4170 goto out;
4171 }
4172
4173 QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list);
4174 bdrv_unref(bs);
4175
Alberto Garcia81b936a2015-11-02 16:51:55 +02004176out:
4177 aio_context_release(aio_context);
4178}
4179
Wen Congyang7f821592016-05-10 15:36:39 +08004180static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs,
4181 const char *child_name)
4182{
4183 BdrvChild *child;
4184
4185 QLIST_FOREACH(child, &parent_bs->children, next) {
4186 if (strcmp(child->name, child_name) == 0) {
4187 return child;
4188 }
4189 }
4190
4191 return NULL;
4192}
4193
4194void qmp_x_blockdev_change(const char *parent, bool has_child,
4195 const char *child, bool has_node,
4196 const char *node, Error **errp)
4197{
4198 BlockDriverState *parent_bs, *new_bs = NULL;
4199 BdrvChild *p_child;
4200
4201 parent_bs = bdrv_lookup_bs(parent, parent, errp);
4202 if (!parent_bs) {
4203 return;
4204 }
4205
4206 if (has_child == has_node) {
4207 if (has_child) {
4208 error_setg(errp, "The parameters child and node are in conflict");
4209 } else {
4210 error_setg(errp, "Either child or node must be specified");
4211 }
4212 return;
4213 }
4214
4215 if (has_child) {
4216 p_child = bdrv_find_child(parent_bs, child);
4217 if (!p_child) {
4218 error_setg(errp, "Node '%s' does not have child '%s'",
4219 parent, child);
4220 return;
4221 }
4222 bdrv_del_child(parent_bs, p_child, errp);
4223 }
4224
4225 if (has_node) {
4226 new_bs = bdrv_find_node(node);
4227 if (!new_bs) {
4228 error_setg(errp, "Node '%s' not found", node);
4229 return;
4230 }
4231 bdrv_add_child(parent_bs, new_bs, errp);
4232 }
4233}
4234
Stefan Hajnoczifb5458c2012-01-18 14:40:49 +00004235BlockJobInfoList *qmp_query_block_jobs(Error **errp)
4236{
Markus Armbrusterfea68bb2014-10-07 13:59:10 +02004237 BlockJobInfoList *head = NULL, **p_next = &head;
Alberto Garciaf0f55de2016-05-27 12:53:37 +02004238 BlockJob *job;
Markus Armbrusterfea68bb2014-10-07 13:59:10 +02004239
Alberto Garciaf0f55de2016-05-27 12:53:37 +02004240 for (job = block_job_next(NULL); job; job = block_job_next(job)) {
John Snow559b9352016-10-27 12:06:55 -04004241 BlockJobInfoList *elem;
4242 AioContext *aio_context;
Stefan Hajnoczi69691e72014-10-21 12:03:51 +01004243
John Snow559b9352016-10-27 12:06:55 -04004244 if (block_job_is_internal(job)) {
4245 continue;
4246 }
4247 elem = g_new0(BlockJobInfoList, 1);
4248 aio_context = blk_get_aio_context(job->blk);
Stefan Hajnoczi69691e72014-10-21 12:03:51 +01004249 aio_context_acquire(aio_context);
John Snow559b9352016-10-27 12:06:55 -04004250 elem->value = block_job_query(job, errp);
Stefan Hajnoczi69691e72014-10-21 12:03:51 +01004251 aio_context_release(aio_context);
John Snow559b9352016-10-27 12:06:55 -04004252 if (!elem->value) {
4253 g_free(elem);
4254 qapi_free_BlockJobInfoList(head);
4255 return NULL;
4256 }
Alberto Garciaf0f55de2016-05-27 12:53:37 +02004257 *p_next = elem;
4258 p_next = &elem->next;
Markus Armbrusterfea68bb2014-10-07 13:59:10 +02004259 }
4260
4261 return head;
Stefan Hajnoczifb5458c2012-01-18 14:40:49 +00004262}
Paolo Bonzini4d454572012-11-26 16:03:42 +01004263
Stefan Hajnoczica00bbb2017-12-06 14:45:49 +00004264void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread,
Stefan Hajnoczi882e9b82017-12-07 20:13:17 +00004265 bool has_force, bool force, Error **errp)
Stefan Hajnoczica00bbb2017-12-06 14:45:49 +00004266{
4267 AioContext *old_context;
4268 AioContext *new_context;
4269 BlockDriverState *bs;
4270
4271 bs = bdrv_find_node(node_name);
4272 if (!bs) {
4273 error_setg(errp, "Cannot find node %s", node_name);
4274 return;
4275 }
4276
Stefan Hajnoczi882e9b82017-12-07 20:13:17 +00004277 /* Protects against accidents. */
4278 if (!(has_force && force) && bdrv_has_blk(bs)) {
4279 error_setg(errp, "Node %s is associated with a BlockBackend and could "
4280 "be in use (use force=true to override this check)",
4281 node_name);
Stefan Hajnoczica00bbb2017-12-06 14:45:49 +00004282 return;
4283 }
4284
4285 if (iothread->type == QTYPE_QSTRING) {
4286 IOThread *obj = iothread_by_id(iothread->u.s);
4287 if (!obj) {
4288 error_setg(errp, "Cannot find iothread %s", iothread->u.s);
4289 return;
4290 }
4291
4292 new_context = iothread_get_aio_context(obj);
4293 } else {
4294 new_context = qemu_get_aio_context();
4295 }
4296
4297 old_context = bdrv_get_aio_context(bs);
4298 aio_context_acquire(old_context);
4299
4300 bdrv_set_aio_context(bs, new_context);
4301
4302 aio_context_release(old_context);
4303}
4304
Vladimir Sementsov-Ogievskiy7e5c7762018-03-09 19:52:12 +03004305void qmp_x_block_latency_histogram_set(
4306 const char *device,
4307 bool has_boundaries, uint64List *boundaries,
4308 bool has_boundaries_read, uint64List *boundaries_read,
4309 bool has_boundaries_write, uint64List *boundaries_write,
4310 bool has_boundaries_flush, uint64List *boundaries_flush,
4311 Error **errp)
4312{
4313 BlockBackend *blk = blk_by_name(device);
4314 BlockAcctStats *stats;
4315
4316 if (!blk) {
4317 error_setg(errp, "Device '%s' not found", device);
4318 return;
4319 }
4320 stats = blk_get_stats(blk);
4321
4322 if (!has_boundaries && !has_boundaries_read && !has_boundaries_write &&
4323 !has_boundaries_flush)
4324 {
4325 block_latency_histograms_clear(stats);
4326 return;
4327 }
4328
4329 if (has_boundaries || has_boundaries_read) {
4330 block_latency_histogram_set(
4331 stats, BLOCK_ACCT_READ,
4332 has_boundaries_read ? boundaries_read : boundaries);
4333 }
4334
4335 if (has_boundaries || has_boundaries_write) {
4336 block_latency_histogram_set(
4337 stats, BLOCK_ACCT_WRITE,
4338 has_boundaries_write ? boundaries_write : boundaries);
4339 }
4340
4341 if (has_boundaries || has_boundaries_flush) {
4342 block_latency_histogram_set(
4343 stats, BLOCK_ACCT_FLUSH,
4344 has_boundaries_flush ? boundaries_flush : boundaries);
4345 }
4346}
4347
Kevin Wolf00063832013-03-15 10:35:07 +01004348QemuOptsList qemu_common_drive_opts = {
Paolo Bonzini4d454572012-11-26 16:03:42 +01004349 .name = "drive",
Kevin Wolf00063832013-03-15 10:35:07 +01004350 .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head),
Paolo Bonzini4d454572012-11-26 16:03:42 +01004351 .desc = {
4352 {
Paolo Bonzini4d454572012-11-26 16:03:42 +01004353 .name = "snapshot",
4354 .type = QEMU_OPT_BOOL,
4355 .help = "enable/disable snapshot mode",
4356 },{
Paolo Bonzini4d454572012-11-26 16:03:42 +01004357 .name = "aio",
4358 .type = QEMU_OPT_STRING,
4359 .help = "host AIO implementation (threads, native)",
4360 },{
Kevin Wolfe4b24b42016-03-15 15:39:42 +01004361 .name = BDRV_OPT_CACHE_WB,
4362 .type = QEMU_OPT_BOOL,
4363 .help = "Enable writeback mode",
4364 },{
Paolo Bonzini4d454572012-11-26 16:03:42 +01004365 .name = "format",
4366 .type = QEMU_OPT_STRING,
4367 .help = "disk format (raw, qcow2, ...)",
4368 },{
Paolo Bonzini4d454572012-11-26 16:03:42 +01004369 .name = "rerror",
4370 .type = QEMU_OPT_STRING,
4371 .help = "read error action",
4372 },{
4373 .name = "werror",
4374 .type = QEMU_OPT_STRING,
4375 .help = "write error action",
4376 },{
Alberto Garcia4e200cf2016-09-15 17:53:05 +03004377 .name = BDRV_OPT_READ_ONLY,
Paolo Bonzini4d454572012-11-26 16:03:42 +01004378 .type = QEMU_OPT_BOOL,
4379 .help = "open drive file as read-only",
Pradeep Jagadeesha2a78622017-02-28 10:31:46 +01004380 },
4381
4382 THROTTLE_OPTS,
4383
4384 {
Alberto Garcia76f4afb2015-06-08 18:17:44 +02004385 .name = "throttling.group",
4386 .type = QEMU_OPT_STRING,
4387 .help = "name of the block throttling group",
4388 },{
Paolo Bonzini4d454572012-11-26 16:03:42 +01004389 .name = "copy-on-read",
4390 .type = QEMU_OPT_BOOL,
4391 .help = "copy read data from backing file into image file",
Peter Lieven465bee12014-05-18 00:58:19 +02004392 },{
4393 .name = "detect-zeroes",
4394 .type = QEMU_OPT_STRING,
4395 .help = "try to optimize zero writes (off, on, unmap)",
Alberto Garcia362e9292015-10-28 17:33:04 +02004396 },{
4397 .name = "stats-account-invalid",
4398 .type = QEMU_OPT_BOOL,
4399 .help = "whether to account for invalid I/O operations "
4400 "in the statistics",
4401 },{
4402 .name = "stats-account-failed",
4403 .type = QEMU_OPT_BOOL,
4404 .help = "whether to account for failed I/O operations "
4405 "in the statistics",
Paolo Bonzini4d454572012-11-26 16:03:42 +01004406 },
4407 { /* end of list */ }
4408 },
4409};
Kevin Wolf00063832013-03-15 10:35:07 +01004410
4411QemuOptsList qemu_drive_opts = {
4412 .name = "drive",
4413 .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
4414 .desc = {
Kevin Wolf492fdc62013-06-19 13:44:17 +02004415 /*
4416 * no elements => accept any params
4417 * validation will happen later
4418 */
Kevin Wolf00063832013-03-15 10:35:07 +01004419 { /* end of list */ }
4420 },
4421};