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666daa68 MA |
1 | /* |
2 | * QEMU host block devices | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or | |
7 | * later. See the COPYING file in the top-level directory. | |
3618a094 MA |
8 | * |
9 | * This file incorporates work covered by the following copyright and | |
10 | * permission notice: | |
11 | * | |
12 | * Copyright (c) 2003-2008 Fabrice Bellard | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
15 | * of this software and associated documentation files (the "Software"), to deal | |
16 | * in the Software without restriction, including without limitation the rights | |
17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
18 | * copies of the Software, and to permit persons to whom the Software is | |
19 | * furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice shall be included in | |
22 | * all copies or substantial portions of the Software. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
30 | * THE SOFTWARE. | |
666daa68 MA |
31 | */ |
32 | ||
d38ea87a | 33 | #include "qemu/osdep.h" |
26f54e9a | 34 | #include "sysemu/block-backend.h" |
9c17d615 | 35 | #include "sysemu/blockdev.h" |
0d09e41a | 36 | #include "hw/block/block.h" |
737e150e | 37 | #include "block/blockjob.h" |
609f45ea | 38 | #include "block/qdict.h" |
76f4afb4 | 39 | #include "block/throttle-groups.h" |
83c9089e | 40 | #include "monitor/monitor.h" |
d49b6836 | 41 | #include "qemu/error-report.h" |
1de7afc9 | 42 | #include "qemu/option.h" |
cdcd4361 | 43 | #include "qemu/qemu-print.h" |
1de7afc9 | 44 | #include "qemu/config-file.h" |
9af23989 MA |
45 | #include "qapi/qapi-commands-block.h" |
46 | #include "qapi/qapi-commands-transaction.h" | |
47 | #include "qapi/qapi-visit-block-core.h" | |
452fcdbc | 48 | #include "qapi/qmp/qdict.h" |
15280c36 | 49 | #include "qapi/qmp/qnum.h" |
6b673957 | 50 | #include "qapi/qmp/qstring.h" |
e688df6b | 51 | #include "qapi/error.h" |
cc7a8ea7 | 52 | #include "qapi/qmp/qerror.h" |
47e6b297 | 53 | #include "qapi/qmp/qlist.h" |
b3db211f | 54 | #include "qapi/qobject-output-visitor.h" |
9c17d615 | 55 | #include "sysemu/sysemu.h" |
ca00bbb1 | 56 | #include "sysemu/iothread.h" |
737e150e | 57 | #include "block/block_int.h" |
0ab8ed18 | 58 | #include "block/trace.h" |
9c17d615 | 59 | #include "sysemu/arch_init.h" |
c616f16e | 60 | #include "sysemu/qtest.h" |
54d31236 | 61 | #include "sysemu/runstate.h" |
f348b6d1 VB |
62 | #include "qemu/cutils.h" |
63 | #include "qemu/help_option.h" | |
db725815 | 64 | #include "qemu/main-loop.h" |
a2a7862c | 65 | #include "qemu/throttle-options.h" |
666daa68 | 66 | |
9c4218e9 HR |
67 | static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
68 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); | |
69 | ||
b33945cf KW |
70 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
71 | bool force, Error **errp); | |
82fcf66e HR |
72 | static void blockdev_remove_medium(bool has_device, const char *device, |
73 | bool has_id, const char *id, Error **errp); | |
74 | static void blockdev_insert_medium(bool has_device, const char *device, | |
75 | bool has_id, const char *id, | |
76 | const char *node_name, Error **errp); | |
bf18bee5 | 77 | |
1960966d MA |
78 | static const char *const if_name[IF_COUNT] = { |
79 | [IF_NONE] = "none", | |
80 | [IF_IDE] = "ide", | |
81 | [IF_SCSI] = "scsi", | |
82 | [IF_FLOPPY] = "floppy", | |
83 | [IF_PFLASH] = "pflash", | |
84 | [IF_MTD] = "mtd", | |
85 | [IF_SD] = "sd", | |
86 | [IF_VIRTIO] = "virtio", | |
87 | [IF_XEN] = "xen", | |
88 | }; | |
89 | ||
21dff8cf | 90 | static int if_max_devs[IF_COUNT] = { |
27d6bf40 MA |
91 | /* |
92 | * Do not change these numbers! They govern how drive option | |
93 | * index maps to unit and bus. That mapping is ABI. | |
94 | * | |
547cb157 | 95 | * All controllers used to implement if=T drives need to support |
27d6bf40 MA |
96 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
97 | * Otherwise, some index values map to "impossible" bus, unit | |
98 | * values. | |
99 | * | |
100 | * For instance, if you change [IF_SCSI] to 255, -drive | |
101 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
102 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
103 | * the drive can't be set up. Regression. | |
104 | */ | |
105 | [IF_IDE] = 2, | |
106 | [IF_SCSI] = 7, | |
1960966d MA |
107 | }; |
108 | ||
21dff8cf JS |
109 | /** |
110 | * Boards may call this to offer board-by-board overrides | |
111 | * of the default, global values. | |
112 | */ | |
113 | void override_max_devs(BlockInterfaceType type, int max_devs) | |
114 | { | |
18e46a03 | 115 | BlockBackend *blk; |
21dff8cf JS |
116 | DriveInfo *dinfo; |
117 | ||
118 | if (max_devs <= 0) { | |
119 | return; | |
120 | } | |
121 | ||
18e46a03 MA |
122 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
123 | dinfo = blk_legacy_dinfo(blk); | |
21dff8cf JS |
124 | if (dinfo->type == type) { |
125 | fprintf(stderr, "Cannot override units-per-bus property of" | |
126 | " the %s interface, because a drive of that type has" | |
127 | " already been added.\n", if_name[type]); | |
128 | g_assert_not_reached(); | |
129 | } | |
130 | } | |
131 | ||
132 | if_max_devs[type] = max_devs; | |
133 | } | |
134 | ||
14bafc54 MA |
135 | /* |
136 | * We automatically delete the drive when a device using it gets | |
137 | * unplugged. Questionable feature, but we can't just drop it. | |
138 | * Device models call blockdev_mark_auto_del() to schedule the | |
139 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
140 | * when deletion is actually safe. | |
141 | */ | |
4be74634 | 142 | void blockdev_mark_auto_del(BlockBackend *blk) |
14bafc54 | 143 | { |
18e46a03 | 144 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
8164102f | 145 | BlockJob *job; |
14bafc54 | 146 | |
26f8b3a8 | 147 | if (!dinfo) { |
2d246f01 KW |
148 | return; |
149 | } | |
150 | ||
8164102f VSO |
151 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
152 | if (block_job_has_bdrv(job, blk_bs(blk))) { | |
153 | AioContext *aio_context = job->job.aio_context; | |
154 | aio_context_acquire(aio_context); | |
91fddb0d | 155 | |
8164102f | 156 | job_cancel(&job->job, false); |
91fddb0d | 157 | |
8164102f VSO |
158 | aio_context_release(aio_context); |
159 | } | |
5433c24f | 160 | } |
91fddb0d | 161 | |
26f8b3a8 | 162 | dinfo->auto_del = 1; |
14bafc54 MA |
163 | } |
164 | ||
4be74634 | 165 | void blockdev_auto_del(BlockBackend *blk) |
14bafc54 | 166 | { |
18e46a03 | 167 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
14bafc54 | 168 | |
0fc0f1fa | 169 | if (dinfo && dinfo->auto_del) { |
efaa7c4e | 170 | monitor_remove_blk(blk); |
b9fe8a7a | 171 | blk_unref(blk); |
14bafc54 MA |
172 | } |
173 | } | |
174 | ||
d8f94e1b JS |
175 | /** |
176 | * Returns the current mapping of how many units per bus | |
177 | * a particular interface can support. | |
178 | * | |
179 | * A positive integer indicates n units per bus. | |
180 | * 0 implies the mapping has not been established. | |
181 | * -1 indicates an invalid BlockInterfaceType was given. | |
182 | */ | |
183 | int drive_get_max_devs(BlockInterfaceType type) | |
184 | { | |
185 | if (type >= IF_IDE && type < IF_COUNT) { | |
186 | return if_max_devs[type]; | |
187 | } | |
188 | ||
189 | return -1; | |
190 | } | |
191 | ||
505a7fb1 MA |
192 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
193 | { | |
194 | int max_devs = if_max_devs[type]; | |
195 | return max_devs ? index / max_devs : 0; | |
196 | } | |
197 | ||
198 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
199 | { | |
200 | int max_devs = if_max_devs[type]; | |
201 | return max_devs ? index % max_devs : index; | |
202 | } | |
203 | ||
2292ddae MA |
204 | QemuOpts *drive_def(const char *optstr) |
205 | { | |
70b94331 | 206 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
2292ddae MA |
207 | } |
208 | ||
209 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 210 | const char *optstr) |
666daa68 | 211 | { |
666daa68 MA |
212 | QemuOpts *opts; |
213 | ||
2292ddae | 214 | opts = drive_def(optstr); |
666daa68 MA |
215 | if (!opts) { |
216 | return NULL; | |
217 | } | |
2292ddae | 218 | if (type != IF_DEFAULT) { |
f43e47db | 219 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
2292ddae MA |
220 | } |
221 | if (index >= 0) { | |
a8b18f8f | 222 | qemu_opt_set_number(opts, "index", index, &error_abort); |
2292ddae | 223 | } |
666daa68 | 224 | if (file) |
f43e47db | 225 | qemu_opt_set(opts, "file", file, &error_abort); |
666daa68 MA |
226 | return opts; |
227 | } | |
228 | ||
229 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
230 | { | |
18e46a03 | 231 | BlockBackend *blk; |
666daa68 MA |
232 | DriveInfo *dinfo; |
233 | ||
18e46a03 MA |
234 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
235 | dinfo = blk_legacy_dinfo(blk); | |
236 | if (dinfo && dinfo->type == type | |
237 | && dinfo->bus == bus && dinfo->unit == unit) { | |
666daa68 | 238 | return dinfo; |
18e46a03 | 239 | } |
666daa68 MA |
240 | } |
241 | ||
242 | return NULL; | |
243 | } | |
244 | ||
720b8dc0 | 245 | void drive_check_orphaned(void) |
a66c9dc7 | 246 | { |
18e46a03 | 247 | BlockBackend *blk; |
a66c9dc7 | 248 | DriveInfo *dinfo; |
664cc623 | 249 | Location loc; |
720b8dc0 | 250 | bool orphans = false; |
a66c9dc7 | 251 | |
18e46a03 MA |
252 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
253 | dinfo = blk_legacy_dinfo(blk); | |
a7f53e26 | 254 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
a66c9dc7 | 255 | dinfo->type != IF_NONE) { |
664cc623 MA |
256 | loc_push_none(&loc); |
257 | qemu_opts_loc_restore(dinfo->opts); | |
720b8dc0 | 258 | error_report("machine type does not support" |
664cc623 MA |
259 | " if=%s,bus=%d,unit=%d", |
260 | if_name[dinfo->type], dinfo->bus, dinfo->unit); | |
261 | loc_pop(&loc); | |
720b8dc0 | 262 | orphans = true; |
a66c9dc7 JS |
263 | } |
264 | } | |
265 | ||
720b8dc0 MA |
266 | if (orphans) { |
267 | exit(1); | |
268 | } | |
a66c9dc7 JS |
269 | } |
270 | ||
f1bd51ac MA |
271 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
272 | { | |
273 | return drive_get(type, | |
274 | drive_index_to_bus_id(type, index), | |
275 | drive_index_to_unit_id(type, index)); | |
276 | } | |
277 | ||
666daa68 MA |
278 | int drive_get_max_bus(BlockInterfaceType type) |
279 | { | |
280 | int max_bus; | |
18e46a03 | 281 | BlockBackend *blk; |
666daa68 MA |
282 | DriveInfo *dinfo; |
283 | ||
284 | max_bus = -1; | |
18e46a03 MA |
285 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
286 | dinfo = blk_legacy_dinfo(blk); | |
287 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { | |
666daa68 | 288 | max_bus = dinfo->bus; |
18e46a03 | 289 | } |
666daa68 MA |
290 | } |
291 | return max_bus; | |
292 | } | |
293 | ||
13839974 MA |
294 | /* Get a block device. This should only be used for single-drive devices |
295 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
296 | appropriate bus. */ | |
297 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
298 | { | |
299 | static int next_block_unit[IF_COUNT]; | |
300 | ||
301 | return drive_get(type, 0, next_block_unit[type]++); | |
302 | } | |
303 | ||
666daa68 MA |
304 | static void bdrv_format_print(void *opaque, const char *name) |
305 | { | |
cdcd4361 | 306 | qemu_printf(" %s", name); |
666daa68 MA |
307 | } |
308 | ||
aa398a5c SH |
309 | typedef struct { |
310 | QEMUBH *bh; | |
fa510ebf FZ |
311 | BlockDriverState *bs; |
312 | } BDRVPutRefBH; | |
aa398a5c | 313 | |
b681072d | 314 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
315 | { |
316 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 317 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 318 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 319 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 320 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 321 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 322 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 323 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 324 | } else { |
b681072d KW |
325 | error_setg(errp, "'%s' invalid %s error action", |
326 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
327 | return -1; |
328 | } | |
329 | } | |
330 | ||
40119eff AG |
331 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
332 | Error **errp) | |
333 | { | |
334 | const QListEntry *entry; | |
335 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { | |
336 | switch (qobject_type(entry->value)) { | |
337 | ||
338 | case QTYPE_QSTRING: { | |
339 | unsigned long long length; | |
7dc847eb HR |
340 | const char *str = qstring_get_str(qobject_to(QString, |
341 | entry->value)); | |
40119eff AG |
342 | if (parse_uint_full(str, &length, 10) == 0 && |
343 | length > 0 && length <= UINT_MAX) { | |
344 | block_acct_add_interval(stats, (unsigned) length); | |
345 | } else { | |
346 | error_setg(errp, "Invalid interval length: %s", str); | |
347 | return false; | |
348 | } | |
349 | break; | |
350 | } | |
351 | ||
01b2ffce | 352 | case QTYPE_QNUM: { |
7dc847eb | 353 | int64_t length = qnum_get_int(qobject_to(QNum, entry->value)); |
01b2ffce | 354 | |
40119eff AG |
355 | if (length > 0 && length <= UINT_MAX) { |
356 | block_acct_add_interval(stats, (unsigned) length); | |
357 | } else { | |
358 | error_setg(errp, "Invalid interval length: %" PRId64, length); | |
359 | return false; | |
360 | } | |
361 | break; | |
362 | } | |
363 | ||
364 | default: | |
365 | error_setg(errp, "The specification of stats-intervals is invalid"); | |
366 | return false; | |
367 | } | |
368 | } | |
369 | return true; | |
370 | } | |
371 | ||
33cb7dc8 KW |
372 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
373 | ||
fbf8175e HR |
374 | /* All parameters but @opts are optional and may be set to NULL. */ |
375 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, | |
376 | const char **throttling_group, ThrottleConfig *throttle_cfg, | |
377 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) | |
378 | { | |
fbf8175e HR |
379 | Error *local_error = NULL; |
380 | const char *aio; | |
381 | ||
382 | if (bdrv_flags) { | |
fbf8175e HR |
383 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
384 | *bdrv_flags |= BDRV_O_COPY_ON_READ; | |
385 | } | |
386 | ||
fbf8175e | 387 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
f80f2673 AM |
388 | if (bdrv_parse_aio(aio, bdrv_flags) < 0) { |
389 | error_setg(errp, "invalid aio option"); | |
390 | return; | |
fbf8175e HR |
391 | } |
392 | } | |
393 | } | |
394 | ||
395 | /* disk I/O throttling */ | |
396 | if (throttling_group) { | |
397 | *throttling_group = qemu_opt_get(opts, "throttling.group"); | |
398 | } | |
399 | ||
400 | if (throttle_cfg) { | |
1588ab5d | 401 | throttle_config_init(throttle_cfg); |
fbf8175e HR |
402 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
403 | qemu_opt_get_number(opts, "throttling.bps-total", 0); | |
404 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = | |
405 | qemu_opt_get_number(opts, "throttling.bps-read", 0); | |
406 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = | |
407 | qemu_opt_get_number(opts, "throttling.bps-write", 0); | |
408 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = | |
409 | qemu_opt_get_number(opts, "throttling.iops-total", 0); | |
410 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = | |
411 | qemu_opt_get_number(opts, "throttling.iops-read", 0); | |
412 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = | |
413 | qemu_opt_get_number(opts, "throttling.iops-write", 0); | |
414 | ||
415 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = | |
416 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
417 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = | |
418 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
419 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = | |
420 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
421 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = | |
422 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
423 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = | |
424 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
425 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = | |
426 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
427 | ||
8a0fc18d AG |
428 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
429 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); | |
430 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = | |
431 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); | |
432 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = | |
433 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); | |
434 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = | |
435 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); | |
436 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = | |
437 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); | |
438 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = | |
439 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); | |
440 | ||
fbf8175e HR |
441 | throttle_cfg->op_size = |
442 | qemu_opt_get_number(opts, "throttling.iops-size", 0); | |
443 | ||
d5851089 | 444 | if (!throttle_is_valid(throttle_cfg, errp)) { |
fbf8175e HR |
445 | return; |
446 | } | |
447 | } | |
448 | ||
449 | if (detect_zeroes) { | |
450 | *detect_zeroes = | |
f7abe0ec | 451 | qapi_enum_parse(&BlockdevDetectZeroesOptions_lookup, |
fbf8175e | 452 | qemu_opt_get(opts, "detect-zeroes"), |
fbf8175e HR |
453 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
454 | &local_error); | |
455 | if (local_error) { | |
456 | error_propagate(errp, local_error); | |
457 | return; | |
458 | } | |
fbf8175e HR |
459 | } |
460 | } | |
461 | ||
f298d071 | 462 | /* Takes the ownership of bs_opts */ |
18e46a03 MA |
463 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
464 | Error **errp) | |
666daa68 MA |
465 | { |
466 | const char *buf; | |
666daa68 MA |
467 | int bdrv_flags = 0; |
468 | int on_read_error, on_write_error; | |
362e9299 | 469 | bool account_invalid, account_failed; |
f87a0e29 | 470 | bool writethrough, read_only; |
26f54e9a | 471 | BlockBackend *blk; |
a0f1eab1 | 472 | BlockDriverState *bs; |
cc0681c4 | 473 | ThrottleConfig cfg; |
666daa68 | 474 | int snapshot = 0; |
c546194f | 475 | Error *error = NULL; |
0006383e | 476 | QemuOpts *opts; |
40119eff AG |
477 | QDict *interval_dict = NULL; |
478 | QList *interval_list = NULL; | |
0006383e | 479 | const char *id; |
fbf8175e HR |
480 | BlockdevDetectZeroesOptions detect_zeroes = |
481 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; | |
482 | const char *throttling_group = NULL; | |
666daa68 | 483 | |
f298d071 KW |
484 | /* Check common options by copying from bs_opts to opts, all other options |
485 | * stay in bs_opts for processing by bdrv_open(). */ | |
486 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 487 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 488 | if (error) { |
b681072d | 489 | error_propagate(errp, error); |
6376f952 | 490 | goto err_no_opts; |
0006383e KW |
491 | } |
492 | ||
0006383e | 493 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 494 | if (error) { |
b681072d | 495 | error_propagate(errp, error); |
ec9c10d2 | 496 | goto early_err; |
0006383e KW |
497 | } |
498 | ||
499 | if (id) { | |
500 | qdict_del(bs_opts, "id"); | |
501 | } | |
502 | ||
666daa68 | 503 | /* extract parameters */ |
666daa68 | 504 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
666daa68 | 505 | |
362e9299 AG |
506 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
507 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); | |
508 | ||
e4b24b49 KW |
509 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
510 | ||
ff356ee4 AG |
511 | id = qemu_opts_id(opts); |
512 | ||
40119eff AG |
513 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
514 | qdict_array_split(interval_dict, &interval_list); | |
515 | ||
516 | if (qdict_size(interval_dict) != 0) { | |
517 | error_setg(errp, "Invalid option stats-intervals.%s", | |
518 | qdict_first(interval_dict)->key); | |
519 | goto early_err; | |
520 | } | |
2be5506f | 521 | |
fbf8175e HR |
522 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
523 | &detect_zeroes, &error); | |
524 | if (error) { | |
525 | error_propagate(errp, error); | |
526 | goto early_err; | |
666daa68 | 527 | } |
666daa68 MA |
528 | |
529 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 | 530 | if (is_help_option(buf)) { |
cdcd4361 | 531 | qemu_printf("Supported formats:"); |
9ac404c5 | 532 | bdrv_iterate_format(bdrv_format_print, NULL, false); |
cdcd4361 | 533 | qemu_printf("\nSupported formats (read-only):"); |
9ac404c5 | 534 | bdrv_iterate_format(bdrv_format_print, NULL, true); |
cdcd4361 | 535 | qemu_printf("\n"); |
ec9c10d2 | 536 | goto early_err; |
666daa68 | 537 | } |
74fe54f2 | 538 | |
e4342ce5 HR |
539 | if (qdict_haskey(bs_opts, "driver")) { |
540 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); | |
ec9c10d2 | 541 | goto early_err; |
6db5f5d6 | 542 | } |
46f5ac20 | 543 | qdict_put_str(bs_opts, "driver", buf); |
666daa68 MA |
544 | } |
545 | ||
92aa5c6d | 546 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 547 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 548 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 549 | if (error) { |
b681072d | 550 | error_propagate(errp, error); |
ec9c10d2 | 551 | goto early_err; |
666daa68 MA |
552 | } |
553 | } | |
554 | ||
92aa5c6d | 555 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 556 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 557 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 558 | if (error) { |
b681072d | 559 | error_propagate(errp, error); |
ec9c10d2 | 560 | goto early_err; |
666daa68 MA |
561 | } |
562 | } | |
563 | ||
5ec18f8c | 564 | if (snapshot) { |
91a097e7 | 565 | bdrv_flags |= BDRV_O_SNAPSHOT; |
5ec18f8c HR |
566 | } |
567 | ||
f87a0e29 AG |
568 | read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false); |
569 | ||
326642bc | 570 | /* init */ |
39c4ae94 | 571 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
5ec18f8c HR |
572 | BlockBackendRootState *blk_rs; |
573 | ||
d861ab3a | 574 | blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); |
5ec18f8c HR |
575 | blk_rs = blk_get_root_state(blk); |
576 | blk_rs->open_flags = bdrv_flags; | |
f87a0e29 | 577 | blk_rs->read_only = read_only; |
5ec18f8c HR |
578 | blk_rs->detect_zeroes = detect_zeroes; |
579 | ||
cb3e7f08 | 580 | qobject_unref(bs_opts); |
e4342ce5 HR |
581 | } else { |
582 | if (file && !*file) { | |
c2ad1b0c | 583 | file = NULL; |
c2ad1b0c | 584 | } |
666daa68 | 585 | |
91a097e7 KW |
586 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
587 | * with other callers) rather than what we want as the real defaults. | |
588 | * Apply the defaults here instead. */ | |
91a097e7 KW |
589 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
590 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
f87a0e29 AG |
591 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, |
592 | read_only ? "on" : "off"); | |
9384a444 | 593 | qdict_set_default_str(bs_opts, BDRV_OPT_AUTO_READ_ONLY, "on"); |
72e775c7 | 594 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
91a097e7 | 595 | |
12d5ee3a KW |
596 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
597 | bdrv_flags |= BDRV_O_INACTIVE; | |
598 | } | |
599 | ||
efaa7c4e | 600 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
e4342ce5 HR |
601 | if (!blk) { |
602 | goto err_no_bs_opts; | |
603 | } | |
604 | bs = blk_bs(blk); | |
ed9d4205 | 605 | |
5ec18f8c | 606 | bs->detect_zeroes = detect_zeroes; |
666daa68 | 607 | |
9caa6f3d | 608 | block_acct_setup(blk_get_stats(blk), account_invalid, account_failed); |
2be5506f | 609 | |
40119eff AG |
610 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
611 | blk_unref(blk); | |
612 | blk = NULL; | |
613 | goto err_no_bs_opts; | |
2be5506f | 614 | } |
666daa68 MA |
615 | } |
616 | ||
7ca7f0f6 KW |
617 | /* disk I/O throttling */ |
618 | if (throttle_enabled(&cfg)) { | |
619 | if (!throttling_group) { | |
ff356ee4 | 620 | throttling_group = id; |
7ca7f0f6 KW |
621 | } |
622 | blk_io_limits_enable(blk, throttling_group); | |
623 | blk_set_io_limits(blk, &cfg); | |
624 | } | |
625 | ||
e4b24b49 | 626 | blk_set_enable_write_cache(blk, !writethrough); |
5ec18f8c | 627 | blk_set_on_error(blk, on_read_error, on_write_error); |
0006383e | 628 | |
ff356ee4 | 629 | if (!monitor_add_blk(blk, id, errp)) { |
efaa7c4e HR |
630 | blk_unref(blk); |
631 | blk = NULL; | |
632 | goto err_no_bs_opts; | |
633 | } | |
634 | ||
e4342ce5 | 635 | err_no_bs_opts: |
0006383e | 636 | qemu_opts_del(opts); |
cb3e7f08 MAL |
637 | qobject_unref(interval_dict); |
638 | qobject_unref(interval_list); | |
18e46a03 | 639 | return blk; |
a9ae2bff | 640 | |
ec9c10d2 | 641 | early_err: |
ec9c10d2 | 642 | qemu_opts_del(opts); |
cb3e7f08 MAL |
643 | qobject_unref(interval_dict); |
644 | qobject_unref(interval_list); | |
6376f952 | 645 | err_no_opts: |
cb3e7f08 | 646 | qobject_unref(bs_opts); |
a9ae2bff | 647 | return NULL; |
666daa68 MA |
648 | } |
649 | ||
bd745e23 HR |
650 | /* Takes the ownership of bs_opts */ |
651 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) | |
652 | { | |
bd745e23 HR |
653 | int bdrv_flags = 0; |
654 | ||
a81d6164 KW |
655 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
656 | * with other callers) rather than what we want as the real defaults. | |
657 | * Apply the defaults here instead. */ | |
a81d6164 KW |
658 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
659 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
f87a0e29 | 660 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off"); |
a81d6164 | 661 | |
12d5ee3a KW |
662 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
663 | bdrv_flags |= BDRV_O_INACTIVE; | |
664 | } | |
665 | ||
74e1ae7c | 666 | return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); |
bd745e23 HR |
667 | } |
668 | ||
9c4218e9 HR |
669 | void blockdev_close_all_bdrv_states(void) |
670 | { | |
671 | BlockDriverState *bs, *next_bs; | |
672 | ||
673 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { | |
674 | AioContext *ctx = bdrv_get_aio_context(bs); | |
675 | ||
676 | aio_context_acquire(ctx); | |
677 | bdrv_unref(bs); | |
678 | aio_context_release(ctx); | |
679 | } | |
680 | } | |
681 | ||
262b4e8f HR |
682 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
683 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) | |
684 | { | |
685 | return bs ? QTAILQ_NEXT(bs, monitor_list) | |
686 | : QTAILQ_FIRST(&monitor_bdrv_states); | |
687 | } | |
688 | ||
5abbf0ee KW |
689 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
690 | Error **errp) | |
57975222 KW |
691 | { |
692 | const char *value; | |
693 | ||
694 | value = qemu_opt_get(opts, from); | |
695 | if (value) { | |
5abbf0ee KW |
696 | if (qemu_opt_find(opts, to)) { |
697 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " | |
698 | "same time", to, from); | |
699 | return; | |
700 | } | |
20d6cd47 JL |
701 | } |
702 | ||
703 | /* rename all items in opts */ | |
704 | while ((value = qemu_opt_get(opts, from))) { | |
f43e47db | 705 | qemu_opt_set(opts, to, value, &error_abort); |
57975222 KW |
706 | qemu_opt_unset(opts, from); |
707 | } | |
708 | } | |
709 | ||
33cb7dc8 KW |
710 | QemuOptsList qemu_legacy_drive_opts = { |
711 | .name = "drive", | |
712 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
713 | .desc = { | |
714 | { | |
87a899c5 KW |
715 | .name = "bus", |
716 | .type = QEMU_OPT_NUMBER, | |
717 | .help = "bus number", | |
718 | },{ | |
719 | .name = "unit", | |
720 | .type = QEMU_OPT_NUMBER, | |
721 | .help = "unit number (i.e. lun for scsi)", | |
722 | },{ | |
723 | .name = "index", | |
724 | .type = QEMU_OPT_NUMBER, | |
725 | .help = "index number", | |
726 | },{ | |
33cb7dc8 KW |
727 | .name = "media", |
728 | .type = QEMU_OPT_STRING, | |
729 | .help = "media type (disk, cdrom)", | |
593d464b KW |
730 | },{ |
731 | .name = "if", | |
732 | .type = QEMU_OPT_STRING, | |
733 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
d095b465 HR |
734 | },{ |
735 | .name = "file", | |
736 | .type = QEMU_OPT_STRING, | |
737 | .help = "file name", | |
33cb7dc8 | 738 | }, |
0ebd24e0 KW |
739 | |
740 | /* Options that are passed on, but have special semantics with -drive */ | |
741 | { | |
4e200cf8 | 742 | .name = BDRV_OPT_READ_ONLY, |
0ebd24e0 KW |
743 | .type = QEMU_OPT_BOOL, |
744 | .help = "open drive file as read-only", | |
ee13ed1c KW |
745 | },{ |
746 | .name = "rerror", | |
747 | .type = QEMU_OPT_STRING, | |
748 | .help = "read error action", | |
749 | },{ | |
750 | .name = "werror", | |
751 | .type = QEMU_OPT_STRING, | |
752 | .help = "write error action", | |
0ebd24e0 KW |
753 | },{ |
754 | .name = "copy-on-read", | |
755 | .type = QEMU_OPT_BOOL, | |
756 | .help = "copy read data from backing file into image file", | |
757 | }, | |
758 | ||
33cb7dc8 KW |
759 | { /* end of list */ } |
760 | }, | |
761 | }; | |
762 | ||
c4f26c9f MA |
763 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type, |
764 | Error **errp) | |
57975222 | 765 | { |
29c4e2b5 | 766 | const char *value; |
18e46a03 | 767 | BlockBackend *blk; |
33cb7dc8 | 768 | DriveInfo *dinfo = NULL; |
f298d071 | 769 | QDict *bs_opts; |
33cb7dc8 KW |
770 | QemuOpts *legacy_opts; |
771 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 772 | BlockInterfaceType type; |
87a899c5 | 773 | int max_devs, bus_id, unit_id, index; |
ee13ed1c | 774 | const char *werror, *rerror; |
a7fdbcf0 FZ |
775 | bool read_only = false; |
776 | bool copy_on_read; | |
d095b465 | 777 | const char *filename; |
33cb7dc8 | 778 | Error *local_err = NULL; |
247147fb | 779 | int i; |
29c4e2b5 | 780 | |
57975222 | 781 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
782 | static const struct { |
783 | const char *from; | |
784 | const char *to; | |
785 | } opt_renames[] = { | |
786 | { "iops", "throttling.iops-total" }, | |
787 | { "iops_rd", "throttling.iops-read" }, | |
788 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 789 | |
247147fb KW |
790 | { "bps", "throttling.bps-total" }, |
791 | { "bps_rd", "throttling.bps-read" }, | |
792 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 793 | |
247147fb KW |
794 | { "iops_max", "throttling.iops-total-max" }, |
795 | { "iops_rd_max", "throttling.iops-read-max" }, | |
796 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 797 | |
247147fb KW |
798 | { "bps_max", "throttling.bps-total-max" }, |
799 | { "bps_rd_max", "throttling.bps-read-max" }, | |
800 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 801 | |
247147fb | 802 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 803 | |
76f4afb4 AG |
804 | { "group", "throttling.group" }, |
805 | ||
4e200cf8 | 806 | { "readonly", BDRV_OPT_READ_ONLY }, |
247147fb KW |
807 | }; |
808 | ||
809 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
5abbf0ee KW |
810 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
811 | &local_err); | |
812 | if (local_err) { | |
c4f26c9f | 813 | error_propagate(errp, local_err); |
5abbf0ee KW |
814 | return NULL; |
815 | } | |
247147fb | 816 | } |
0f227a94 | 817 | |
29c4e2b5 KW |
818 | value = qemu_opt_get(all_opts, "cache"); |
819 | if (value) { | |
820 | int flags = 0; | |
04feb4a5 | 821 | bool writethrough; |
29c4e2b5 | 822 | |
04feb4a5 | 823 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
c4f26c9f | 824 | error_setg(errp, "invalid cache option"); |
29c4e2b5 KW |
825 | return NULL; |
826 | } | |
827 | ||
828 | /* Specific options take precedence */ | |
54861b92 KW |
829 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
830 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, | |
04feb4a5 | 831 | !writethrough, &error_abort); |
29c4e2b5 | 832 | } |
54861b92 KW |
833 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
834 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, | |
cccb7967 | 835 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
29c4e2b5 | 836 | } |
54861b92 KW |
837 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
838 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, | |
cccb7967 | 839 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
29c4e2b5 KW |
840 | } |
841 | qemu_opt_unset(all_opts, "cache"); | |
842 | } | |
843 | ||
f298d071 KW |
844 | /* Get a QDict for processing the options */ |
845 | bs_opts = qdict_new(); | |
846 | qemu_opts_to_qdict(all_opts, bs_opts); | |
847 | ||
87ea75d5 PC |
848 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
849 | &error_abort); | |
33cb7dc8 | 850 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 851 | if (local_err) { |
c4f26c9f | 852 | error_propagate(errp, local_err); |
33cb7dc8 KW |
853 | goto fail; |
854 | } | |
855 | ||
856 | /* Media type */ | |
857 | value = qemu_opt_get(legacy_opts, "media"); | |
858 | if (value) { | |
859 | if (!strcmp(value, "disk")) { | |
860 | media = MEDIA_DISK; | |
861 | } else if (!strcmp(value, "cdrom")) { | |
862 | media = MEDIA_CDROM; | |
a7fdbcf0 | 863 | read_only = true; |
33cb7dc8 | 864 | } else { |
c4f26c9f | 865 | error_setg(errp, "'%s' invalid media", value); |
33cb7dc8 KW |
866 | goto fail; |
867 | } | |
868 | } | |
869 | ||
0ebd24e0 | 870 | /* copy-on-read is disabled with a warning for read-only devices */ |
4e200cf8 | 871 | read_only |= qemu_opt_get_bool(legacy_opts, BDRV_OPT_READ_ONLY, false); |
0ebd24e0 KW |
872 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
873 | ||
874 | if (read_only && copy_on_read) { | |
3dc6f869 | 875 | warn_report("disabling copy-on-read on read-only drive"); |
0ebd24e0 KW |
876 | copy_on_read = false; |
877 | } | |
878 | ||
46f5ac20 EB |
879 | qdict_put_str(bs_opts, BDRV_OPT_READ_ONLY, read_only ? "on" : "off"); |
880 | qdict_put_str(bs_opts, "copy-on-read", copy_on_read ? "on" : "off"); | |
0ebd24e0 | 881 | |
593d464b KW |
882 | /* Controller type */ |
883 | value = qemu_opt_get(legacy_opts, "if"); | |
884 | if (value) { | |
885 | for (type = 0; | |
886 | type < IF_COUNT && strcmp(value, if_name[type]); | |
887 | type++) { | |
888 | } | |
889 | if (type == IF_COUNT) { | |
c4f26c9f | 890 | error_setg(errp, "unsupported bus type '%s'", value); |
593d464b KW |
891 | goto fail; |
892 | } | |
893 | } else { | |
894 | type = block_default_type; | |
895 | } | |
896 | ||
87a899c5 KW |
897 | /* Device address specified by bus/unit or index. |
898 | * If none was specified, try to find the first free one. */ | |
899 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
900 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
901 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
902 | ||
903 | max_devs = if_max_devs[type]; | |
904 | ||
905 | if (index != -1) { | |
906 | if (bus_id != 0 || unit_id != -1) { | |
c4f26c9f | 907 | error_setg(errp, "index cannot be used with bus and unit"); |
87a899c5 KW |
908 | goto fail; |
909 | } | |
910 | bus_id = drive_index_to_bus_id(type, index); | |
911 | unit_id = drive_index_to_unit_id(type, index); | |
912 | } | |
913 | ||
914 | if (unit_id == -1) { | |
915 | unit_id = 0; | |
916 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
917 | unit_id++; | |
918 | if (max_devs && unit_id >= max_devs) { | |
919 | unit_id -= max_devs; | |
920 | bus_id++; | |
921 | } | |
922 | } | |
923 | } | |
924 | ||
925 | if (max_devs && unit_id >= max_devs) { | |
c4f26c9f | 926 | error_setg(errp, "unit %d too big (max is %d)", unit_id, max_devs - 1); |
87a899c5 KW |
927 | goto fail; |
928 | } | |
929 | ||
930 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
c4f26c9f MA |
931 | error_setg(errp, "drive with bus=%d, unit=%d (index=%d) exists", |
932 | bus_id, unit_id, index); | |
87a899c5 KW |
933 | goto fail; |
934 | } | |
935 | ||
936 | /* no id supplied -> create one */ | |
937 | if (qemu_opts_id(all_opts) == NULL) { | |
938 | char *new_id; | |
939 | const char *mediastr = ""; | |
940 | if (type == IF_IDE || type == IF_SCSI) { | |
941 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
942 | } | |
943 | if (max_devs) { | |
944 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
945 | mediastr, unit_id); | |
946 | } else { | |
947 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
948 | mediastr, unit_id); | |
949 | } | |
46f5ac20 | 950 | qdict_put_str(bs_opts, "id", new_id); |
87a899c5 KW |
951 | g_free(new_id); |
952 | } | |
953 | ||
394c7d4d | 954 | /* Add virtio block device */ |
394c7d4d KW |
955 | if (type == IF_VIRTIO) { |
956 | QemuOpts *devopts; | |
87ea75d5 PC |
957 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
958 | &error_abort); | |
394c7d4d | 959 | if (arch_type == QEMU_ARCH_S390X) { |
1f68f1d3 | 960 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
394c7d4d | 961 | } else { |
f43e47db | 962 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
394c7d4d | 963 | } |
f43e47db MA |
964 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
965 | &error_abort); | |
394c7d4d KW |
966 | } |
967 | ||
d095b465 HR |
968 | filename = qemu_opt_get(legacy_opts, "file"); |
969 | ||
ee13ed1c KW |
970 | /* Check werror/rerror compatibility with if=... */ |
971 | werror = qemu_opt_get(legacy_opts, "werror"); | |
972 | if (werror != NULL) { | |
973 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
974 | type != IF_NONE) { | |
c4f26c9f | 975 | error_setg(errp, "werror is not supported by this bus type"); |
ee13ed1c KW |
976 | goto fail; |
977 | } | |
46f5ac20 | 978 | qdict_put_str(bs_opts, "werror", werror); |
ee13ed1c KW |
979 | } |
980 | ||
981 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
982 | if (rerror != NULL) { | |
983 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
984 | type != IF_NONE) { | |
c4f26c9f | 985 | error_setg(errp, "rerror is not supported by this bus type"); |
ee13ed1c KW |
986 | goto fail; |
987 | } | |
46f5ac20 | 988 | qdict_put_str(bs_opts, "rerror", rerror); |
ee13ed1c KW |
989 | } |
990 | ||
2d246f01 | 991 | /* Actual block device init: Functionality shared with blockdev-add */ |
18e46a03 | 992 | blk = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 993 | bs_opts = NULL; |
18e46a03 | 994 | if (!blk) { |
b2322003 | 995 | error_propagate(errp, local_err); |
2d246f01 | 996 | goto fail; |
b681072d | 997 | } else { |
84d18f06 | 998 | assert(!local_err); |
2d246f01 KW |
999 | } |
1000 | ||
26f8b3a8 MA |
1001 | /* Create legacy DriveInfo */ |
1002 | dinfo = g_malloc0(sizeof(*dinfo)); | |
f298d071 | 1003 | dinfo->opts = all_opts; |
2d246f01 | 1004 | |
ee13ed1c | 1005 | dinfo->type = type; |
87a899c5 KW |
1006 | dinfo->bus = bus_id; |
1007 | dinfo->unit = unit_id; | |
bcf83158 | 1008 | |
26f8b3a8 MA |
1009 | blk_set_legacy_dinfo(blk, dinfo); |
1010 | ||
e34ef046 KW |
1011 | switch(type) { |
1012 | case IF_IDE: | |
1013 | case IF_SCSI: | |
1014 | case IF_XEN: | |
1015 | case IF_NONE: | |
1016 | dinfo->media_cd = media == MEDIA_CDROM; | |
1017 | break; | |
1018 | default: | |
1019 | break; | |
1020 | } | |
1021 | ||
2d246f01 | 1022 | fail: |
33cb7dc8 | 1023 | qemu_opts_del(legacy_opts); |
cb3e7f08 | 1024 | qobject_unref(bs_opts); |
2d246f01 | 1025 | return dinfo; |
57975222 KW |
1026 | } |
1027 | ||
b6c1bae5 KW |
1028 | static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) |
1029 | { | |
1030 | BlockDriverState *bs; | |
1031 | ||
1032 | bs = bdrv_lookup_bs(name, name, errp); | |
1033 | if (bs == NULL) { | |
1034 | return NULL; | |
1035 | } | |
1036 | ||
1037 | if (!bdrv_is_root_node(bs)) { | |
1038 | error_setg(errp, "Need a root block node"); | |
1039 | return NULL; | |
1040 | } | |
1041 | ||
1042 | if (!bdrv_is_inserted(bs)) { | |
1043 | error_setg(errp, "Device has no medium"); | |
1044 | return NULL; | |
1045 | } | |
1046 | ||
1047 | return bs; | |
1048 | } | |
1049 | ||
b33945cf KW |
1050 | static BlockBackend *qmp_get_blk(const char *blk_name, const char *qdev_id, |
1051 | Error **errp) | |
1052 | { | |
1053 | BlockBackend *blk; | |
1054 | ||
1055 | if (!blk_name == !qdev_id) { | |
1056 | error_setg(errp, "Need exactly one of 'device' and 'id'"); | |
1057 | return NULL; | |
1058 | } | |
1059 | ||
1060 | if (qdev_id) { | |
1061 | blk = blk_by_qdev_id(qdev_id, errp); | |
1062 | } else { | |
1063 | blk = blk_by_name(blk_name); | |
1064 | if (blk == NULL) { | |
1065 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
1066 | "Device '%s' not found", blk_name); | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | return blk; | |
1071 | } | |
1072 | ||
3e5a50d6 | 1073 | void hmp_commit(Monitor *mon, const QDict *qdict) |
666daa68 | 1074 | { |
666daa68 | 1075 | const char *device = qdict_get_str(qdict, "device"); |
a0e8544c | 1076 | BlockBackend *blk; |
e8877497 | 1077 | int ret; |
666daa68 | 1078 | |
6ab4b5ab | 1079 | if (!strcmp(device, "all")) { |
da31d594 | 1080 | ret = blk_commit_all(); |
6ab4b5ab | 1081 | } else { |
84aa0140 SH |
1082 | BlockDriverState *bs; |
1083 | AioContext *aio_context; | |
1084 | ||
a0e8544c FZ |
1085 | blk = blk_by_name(device); |
1086 | if (!blk) { | |
46741111 | 1087 | error_report("Device '%s' not found", device); |
ac59eb95 | 1088 | return; |
6ab4b5ab | 1089 | } |
5433c24f | 1090 | if (!blk_is_available(blk)) { |
46741111 | 1091 | error_report("Device '%s' has no medium", device); |
5433c24f HR |
1092 | return; |
1093 | } | |
84aa0140 SH |
1094 | |
1095 | bs = blk_bs(blk); | |
1096 | aio_context = bdrv_get_aio_context(bs); | |
1097 | aio_context_acquire(aio_context); | |
1098 | ||
1099 | ret = bdrv_commit(bs); | |
1100 | ||
1101 | aio_context_release(aio_context); | |
58513bde JC |
1102 | } |
1103 | if (ret < 0) { | |
46741111 | 1104 | error_report("'commit' error for '%s': %s", device, strerror(-ret)); |
666daa68 MA |
1105 | } |
1106 | } | |
1107 | ||
10f75907 | 1108 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
6cc2a415 | 1109 | { |
c8a83e85 | 1110 | TransactionActionList list; |
6cc2a415 | 1111 | |
10f75907 | 1112 | list.value = action; |
6cc2a415 | 1113 | list.next = NULL; |
94d16a64 | 1114 | qmp_transaction(&list, false, NULL, errp); |
6cc2a415 PB |
1115 | } |
1116 | ||
0901f67e BC |
1117 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1118 | bool has_node_name, const char *node_name, | |
1119 | const char *snapshot_file, | |
1120 | bool has_snapshot_node_name, | |
1121 | const char *snapshot_node_name, | |
6106e249 | 1122 | bool has_format, const char *format, |
0901f67e | 1123 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1124 | { |
a911e6ae | 1125 | BlockdevSnapshotSync snapshot = { |
0901f67e | 1126 | .has_device = has_device, |
6cc2a415 | 1127 | .device = (char *) device, |
0901f67e BC |
1128 | .has_node_name = has_node_name, |
1129 | .node_name = (char *) node_name, | |
6cc2a415 | 1130 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1131 | .has_snapshot_node_name = has_snapshot_node_name, |
1132 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1133 | .has_format = has_format, |
1134 | .format = (char *) format, | |
1135 | .has_mode = has_mode, | |
1136 | .mode = mode, | |
1137 | }; | |
10f75907 EB |
1138 | TransactionAction action = { |
1139 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, | |
32bafa8f | 1140 | .u.blockdev_snapshot_sync.data = &snapshot, |
10f75907 EB |
1141 | }; |
1142 | blockdev_do_action(&action, errp); | |
f8882568 JS |
1143 | } |
1144 | ||
43de7e2d AG |
1145 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
1146 | Error **errp) | |
1147 | { | |
1148 | BlockdevSnapshot snapshot_data = { | |
1149 | .node = (char *) node, | |
1150 | .overlay = (char *) overlay | |
1151 | }; | |
10f75907 EB |
1152 | TransactionAction action = { |
1153 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, | |
32bafa8f | 1154 | .u.blockdev_snapshot.data = &snapshot_data, |
10f75907 EB |
1155 | }; |
1156 | blockdev_do_action(&action, errp); | |
43de7e2d AG |
1157 | } |
1158 | ||
f323bc9e WX |
1159 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1160 | const char *name, | |
1161 | Error **errp) | |
1162 | { | |
1163 | BlockdevSnapshotInternal snapshot = { | |
1164 | .device = (char *) device, | |
1165 | .name = (char *) name | |
1166 | }; | |
10f75907 EB |
1167 | TransactionAction action = { |
1168 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
32bafa8f | 1169 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
10f75907 EB |
1170 | }; |
1171 | blockdev_do_action(&action, errp); | |
f323bc9e WX |
1172 | } |
1173 | ||
44e3e053 WX |
1174 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1175 | bool has_id, | |
1176 | const char *id, | |
1177 | bool has_name, | |
1178 | const char *name, | |
1179 | Error **errp) | |
1180 | { | |
a0e8544c | 1181 | BlockDriverState *bs; |
4ef3982a | 1182 | AioContext *aio_context; |
44e3e053 WX |
1183 | QEMUSnapshotInfo sn; |
1184 | Error *local_err = NULL; | |
1185 | SnapshotInfo *info = NULL; | |
1186 | int ret; | |
1187 | ||
2dfb4c03 KW |
1188 | bs = qmp_get_root_bs(device, errp); |
1189 | if (!bs) { | |
44e3e053 WX |
1190 | return NULL; |
1191 | } | |
2dfb4c03 | 1192 | aio_context = bdrv_get_aio_context(bs); |
5433c24f | 1193 | aio_context_acquire(aio_context); |
44e3e053 WX |
1194 | |
1195 | if (!has_id) { | |
1196 | id = NULL; | |
1197 | } | |
1198 | ||
1199 | if (!has_name) { | |
1200 | name = NULL; | |
1201 | } | |
1202 | ||
1203 | if (!id && !name) { | |
1204 | error_setg(errp, "Name or id must be provided"); | |
5433c24f | 1205 | goto out_aio_context; |
44e3e053 WX |
1206 | } |
1207 | ||
0b928854 SH |
1208 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
1209 | goto out_aio_context; | |
1210 | } | |
1211 | ||
44e3e053 | 1212 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
84d18f06 | 1213 | if (local_err) { |
44e3e053 | 1214 | error_propagate(errp, local_err); |
4ef3982a | 1215 | goto out_aio_context; |
44e3e053 WX |
1216 | } |
1217 | if (!ret) { | |
1218 | error_setg(errp, | |
1219 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1220 | "device '%s'", | |
1221 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
4ef3982a | 1222 | goto out_aio_context; |
44e3e053 WX |
1223 | } |
1224 | ||
1225 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1226 | if (local_err) { |
44e3e053 | 1227 | error_propagate(errp, local_err); |
4ef3982a | 1228 | goto out_aio_context; |
44e3e053 WX |
1229 | } |
1230 | ||
4ef3982a SH |
1231 | aio_context_release(aio_context); |
1232 | ||
5839e53b | 1233 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1234 | info->id = g_strdup(sn.id_str); |
1235 | info->name = g_strdup(sn.name); | |
1236 | info->date_nsec = sn.date_nsec; | |
1237 | info->date_sec = sn.date_sec; | |
1238 | info->vm_state_size = sn.vm_state_size; | |
1239 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1240 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1241 | ||
1242 | return info; | |
4ef3982a SH |
1243 | |
1244 | out_aio_context: | |
1245 | aio_context_release(aio_context); | |
1246 | return NULL; | |
44e3e053 | 1247 | } |
8802d1fd | 1248 | |
341ebc2f JS |
1249 | /** |
1250 | * block_dirty_bitmap_lookup: | |
1251 | * Return a dirty bitmap (if present), after validating | |
1252 | * the node reference and bitmap names. | |
1253 | * | |
1254 | * @node: The name of the BDS node to search for bitmaps | |
1255 | * @name: The name of the bitmap to search for | |
1256 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. | |
341ebc2f JS |
1257 | * @errp: Output pointer for error information. Can be NULL. |
1258 | * | |
1259 | * @return: A bitmap object on success, or NULL on failure. | |
1260 | */ | |
1261 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, | |
1262 | const char *name, | |
1263 | BlockDriverState **pbs, | |
341ebc2f JS |
1264 | Error **errp) |
1265 | { | |
1266 | BlockDriverState *bs; | |
1267 | BdrvDirtyBitmap *bitmap; | |
341ebc2f JS |
1268 | |
1269 | if (!node) { | |
1270 | error_setg(errp, "Node cannot be NULL"); | |
1271 | return NULL; | |
1272 | } | |
1273 | if (!name) { | |
1274 | error_setg(errp, "Bitmap name cannot be NULL"); | |
1275 | return NULL; | |
1276 | } | |
1277 | bs = bdrv_lookup_bs(node, node, NULL); | |
1278 | if (!bs) { | |
1279 | error_setg(errp, "Node '%s' not found", node); | |
1280 | return NULL; | |
1281 | } | |
1282 | ||
341ebc2f JS |
1283 | bitmap = bdrv_find_dirty_bitmap(bs, name); |
1284 | if (!bitmap) { | |
1285 | error_setg(errp, "Dirty bitmap '%s' not found", name); | |
2119882c | 1286 | return NULL; |
341ebc2f JS |
1287 | } |
1288 | ||
1289 | if (pbs) { | |
1290 | *pbs = bs; | |
1291 | } | |
341ebc2f JS |
1292 | |
1293 | return bitmap; | |
341ebc2f JS |
1294 | } |
1295 | ||
b756b9ce | 1296 | /* New and old BlockDriverState structs for atomic group operations */ |
ba0c86a3 | 1297 | |
50f43f0f | 1298 | typedef struct BlkActionState BlkActionState; |
ba0c86a3 | 1299 | |
50f43f0f JS |
1300 | /** |
1301 | * BlkActionOps: | |
1302 | * Table of operations that define an Action. | |
1303 | * | |
1304 | * @instance_size: Size of state struct, in bytes. | |
1305 | * @prepare: Prepare the work, must NOT be NULL. | |
1306 | * @commit: Commit the changes, can be NULL. | |
1307 | * @abort: Abort the changes on fail, can be NULL. | |
1308 | * @clean: Clean up resources after all transaction actions have called | |
1309 | * commit() or abort(). Can be NULL. | |
1310 | * | |
1311 | * Only prepare() may fail. In a single transaction, only one of commit() or | |
1312 | * abort() will be called. clean() will always be called if it is present. | |
1313 | */ | |
1314 | typedef struct BlkActionOps { | |
ba0c86a3 | 1315 | size_t instance_size; |
50f43f0f JS |
1316 | void (*prepare)(BlkActionState *common, Error **errp); |
1317 | void (*commit)(BlkActionState *common); | |
1318 | void (*abort)(BlkActionState *common); | |
1319 | void (*clean)(BlkActionState *common); | |
1320 | } BlkActionOps; | |
ba0c86a3 | 1321 | |
50f43f0f JS |
1322 | /** |
1323 | * BlkActionState: | |
1324 | * Describes one Action's state within a Transaction. | |
1325 | * | |
1326 | * @action: QAPI-defined enum identifying which Action to perform. | |
1327 | * @ops: Table of ActionOps this Action can perform. | |
94d16a64 | 1328 | * @block_job_txn: Transaction which this action belongs to. |
50f43f0f JS |
1329 | * @entry: List membership for all Actions in this Transaction. |
1330 | * | |
1331 | * This structure must be arranged as first member in a subclassed type, | |
1332 | * assuming that the compiler will also arrange it to the same offsets as the | |
1333 | * base class. | |
ba0c86a3 | 1334 | */ |
50f43f0f | 1335 | struct BlkActionState { |
c8a83e85 | 1336 | TransactionAction *action; |
50f43f0f | 1337 | const BlkActionOps *ops; |
62c9e416 | 1338 | JobTxn *block_job_txn; |
94d16a64 | 1339 | TransactionProperties *txn_props; |
f4de0f8c | 1340 | QTAILQ_ENTRY(BlkActionState) entry; |
ba0c86a3 WX |
1341 | }; |
1342 | ||
bbe86010 WX |
1343 | /* internal snapshot private data */ |
1344 | typedef struct InternalSnapshotState { | |
50f43f0f | 1345 | BlkActionState common; |
bbe86010 WX |
1346 | BlockDriverState *bs; |
1347 | QEMUSnapshotInfo sn; | |
507306cc | 1348 | bool created; |
bbe86010 WX |
1349 | } InternalSnapshotState; |
1350 | ||
94d16a64 JS |
1351 | |
1352 | static int action_check_completion_mode(BlkActionState *s, Error **errp) | |
1353 | { | |
1354 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
1355 | error_setg(errp, | |
1356 | "Action '%s' does not support Transaction property " | |
1357 | "completion-mode = %s", | |
977c736f MA |
1358 | TransactionActionKind_str(s->action->type), |
1359 | ActionCompletionMode_str(s->txn_props->completion_mode)); | |
94d16a64 JS |
1360 | return -1; |
1361 | } | |
1362 | return 0; | |
1363 | } | |
1364 | ||
50f43f0f | 1365 | static void internal_snapshot_prepare(BlkActionState *common, |
bbe86010 WX |
1366 | Error **errp) |
1367 | { | |
f70edf99 | 1368 | Error *local_err = NULL; |
bbe86010 WX |
1369 | const char *device; |
1370 | const char *name; | |
1371 | BlockDriverState *bs; | |
1372 | QEMUSnapshotInfo old_sn, *sn; | |
1373 | bool ret; | |
1374 | qemu_timeval tv; | |
1375 | BlockdevSnapshotInternal *internal; | |
1376 | InternalSnapshotState *state; | |
a36e458c | 1377 | AioContext *aio_context; |
bbe86010 WX |
1378 | int ret1; |
1379 | ||
6a8f9661 | 1380 | g_assert(common->action->type == |
bbe86010 | 1381 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
32bafa8f | 1382 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
bbe86010 WX |
1383 | state = DO_UPCAST(InternalSnapshotState, common, common); |
1384 | ||
1385 | /* 1. parse input */ | |
1386 | device = internal->device; | |
1387 | name = internal->name; | |
1388 | ||
1389 | /* 2. check for validation */ | |
94d16a64 JS |
1390 | if (action_check_completion_mode(common, errp) < 0) { |
1391 | return; | |
1392 | } | |
1393 | ||
75dfd402 KW |
1394 | bs = qmp_get_root_bs(device, errp); |
1395 | if (!bs) { | |
bbe86010 WX |
1396 | return; |
1397 | } | |
1398 | ||
a36e458c SH |
1399 | aio_context = bdrv_get_aio_context(bs); |
1400 | aio_context_acquire(aio_context); | |
5d6e96ef | 1401 | |
507306cc | 1402 | state->bs = bs; |
a36e458c SH |
1403 | |
1404 | /* Paired with .clean() */ | |
507306cc FZ |
1405 | bdrv_drained_begin(bs); |
1406 | ||
3dc7ca3c | 1407 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
a36e458c | 1408 | goto out; |
3dc7ca3c SH |
1409 | } |
1410 | ||
bbe86010 | 1411 | if (bdrv_is_read_only(bs)) { |
81e5f78a | 1412 | error_setg(errp, "Device '%s' is read only", device); |
a36e458c | 1413 | goto out; |
bbe86010 WX |
1414 | } |
1415 | ||
1416 | if (!bdrv_can_snapshot(bs)) { | |
81e5f78a AG |
1417 | error_setg(errp, "Block format '%s' used by device '%s' " |
1418 | "does not support internal snapshots", | |
1419 | bs->drv->format_name, device); | |
a36e458c | 1420 | goto out; |
bbe86010 WX |
1421 | } |
1422 | ||
1423 | if (!strlen(name)) { | |
1424 | error_setg(errp, "Name is empty"); | |
a36e458c | 1425 | goto out; |
bbe86010 WX |
1426 | } |
1427 | ||
1428 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1429 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1430 | &local_err); | |
1431 | if (local_err) { | |
1432 | error_propagate(errp, local_err); | |
a36e458c | 1433 | goto out; |
bbe86010 WX |
1434 | } else if (ret) { |
1435 | error_setg(errp, | |
1436 | "Snapshot with name '%s' already exists on device '%s'", | |
1437 | name, device); | |
a36e458c | 1438 | goto out; |
bbe86010 WX |
1439 | } |
1440 | ||
1441 | /* 3. take the snapshot */ | |
1442 | sn = &state->sn; | |
1443 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1444 | qemu_gettimeofday(&tv); | |
1445 | sn->date_sec = tv.tv_sec; | |
1446 | sn->date_nsec = tv.tv_usec * 1000; | |
1447 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1448 | ||
1449 | ret1 = bdrv_snapshot_create(bs, sn); | |
1450 | if (ret1 < 0) { | |
1451 | error_setg_errno(errp, -ret1, | |
1452 | "Failed to create snapshot '%s' on device '%s'", | |
1453 | name, device); | |
a36e458c | 1454 | goto out; |
bbe86010 WX |
1455 | } |
1456 | ||
1457 | /* 4. succeed, mark a snapshot is created */ | |
507306cc | 1458 | state->created = true; |
a36e458c SH |
1459 | |
1460 | out: | |
1461 | aio_context_release(aio_context); | |
bbe86010 WX |
1462 | } |
1463 | ||
50f43f0f | 1464 | static void internal_snapshot_abort(BlkActionState *common) |
bbe86010 WX |
1465 | { |
1466 | InternalSnapshotState *state = | |
1467 | DO_UPCAST(InternalSnapshotState, common, common); | |
1468 | BlockDriverState *bs = state->bs; | |
1469 | QEMUSnapshotInfo *sn = &state->sn; | |
a36e458c | 1470 | AioContext *aio_context; |
bbe86010 WX |
1471 | Error *local_error = NULL; |
1472 | ||
507306cc | 1473 | if (!state->created) { |
bbe86010 WX |
1474 | return; |
1475 | } | |
1476 | ||
a36e458c SH |
1477 | aio_context = bdrv_get_aio_context(state->bs); |
1478 | aio_context_acquire(aio_context); | |
1479 | ||
bbe86010 | 1480 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { |
c29b77f9 MA |
1481 | error_reportf_err(local_error, |
1482 | "Failed to delete snapshot with id '%s' and " | |
1483 | "name '%s' on device '%s' in abort: ", | |
1484 | sn->id_str, sn->name, | |
1485 | bdrv_get_device_name(bs)); | |
bbe86010 | 1486 | } |
a36e458c SH |
1487 | |
1488 | aio_context_release(aio_context); | |
bbe86010 WX |
1489 | } |
1490 | ||
50f43f0f | 1491 | static void internal_snapshot_clean(BlkActionState *common) |
5d6e96ef SH |
1492 | { |
1493 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, | |
1494 | common, common); | |
a36e458c | 1495 | AioContext *aio_context; |
5d6e96ef | 1496 | |
a36e458c SH |
1497 | if (!state->bs) { |
1498 | return; | |
5d6e96ef | 1499 | } |
a36e458c SH |
1500 | |
1501 | aio_context = bdrv_get_aio_context(state->bs); | |
1502 | aio_context_acquire(aio_context); | |
1503 | ||
1504 | bdrv_drained_end(state->bs); | |
1505 | ||
1506 | aio_context_release(aio_context); | |
5d6e96ef SH |
1507 | } |
1508 | ||
ba0c86a3 | 1509 | /* external snapshot private data */ |
ba5d6ab6 | 1510 | typedef struct ExternalSnapshotState { |
50f43f0f | 1511 | BlkActionState common; |
8802d1fd JC |
1512 | BlockDriverState *old_bs; |
1513 | BlockDriverState *new_bs; | |
067acf28 | 1514 | bool overlay_appended; |
ba5d6ab6 | 1515 | } ExternalSnapshotState; |
8802d1fd | 1516 | |
50f43f0f | 1517 | static void external_snapshot_prepare(BlkActionState *common, |
9b9877ee WX |
1518 | Error **errp) |
1519 | { | |
5b363937 | 1520 | int flags = 0; |
43de7e2d | 1521 | QDict *options = NULL; |
9b9877ee | 1522 | Error *local_err = NULL; |
43de7e2d | 1523 | /* Device and node name of the image to generate the snapshot from */ |
e2a31e87 | 1524 | const char *device; |
0901f67e | 1525 | const char *node_name; |
43de7e2d AG |
1526 | /* Reference to the new image (for 'blockdev-snapshot') */ |
1527 | const char *snapshot_ref; | |
1528 | /* File name of the new image (for 'blockdev-snapshot-sync') */ | |
e2a31e87 | 1529 | const char *new_image_file; |
ba5d6ab6 SH |
1530 | ExternalSnapshotState *state = |
1531 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1532 | TransactionAction *action = common->action; |
2d24b60b | 1533 | AioContext *aio_context; |
3ea67e08 | 1534 | AioContext *old_context; |
8ed7d42f | 1535 | int ret; |
9b9877ee | 1536 | |
43de7e2d AG |
1537 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
1538 | * purpose but a different set of parameters */ | |
1539 | switch (action->type) { | |
1540 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: | |
1541 | { | |
32bafa8f | 1542 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
43de7e2d AG |
1543 | device = s->node; |
1544 | node_name = s->node; | |
1545 | new_image_file = NULL; | |
1546 | snapshot_ref = s->overlay; | |
1547 | } | |
1548 | break; | |
1549 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: | |
1550 | { | |
32bafa8f | 1551 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
43de7e2d AG |
1552 | device = s->has_device ? s->device : NULL; |
1553 | node_name = s->has_node_name ? s->node_name : NULL; | |
1554 | new_image_file = s->snapshot_file; | |
1555 | snapshot_ref = NULL; | |
1556 | } | |
1557 | break; | |
1558 | default: | |
1559 | g_assert_not_reached(); | |
e2a31e87 WX |
1560 | } |
1561 | ||
1562 | /* start processing */ | |
94d16a64 JS |
1563 | if (action_check_completion_mode(common, errp) < 0) { |
1564 | return; | |
1565 | } | |
1566 | ||
43de7e2d AG |
1567 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
1568 | if (!state->old_bs) { | |
9b9877ee WX |
1569 | return; |
1570 | } | |
1571 | ||
2d24b60b SH |
1572 | aio_context = bdrv_get_aio_context(state->old_bs); |
1573 | aio_context_acquire(aio_context); | |
1574 | ||
1575 | /* Paired with .clean() */ | |
da763e83 | 1576 | bdrv_drained_begin(state->old_bs); |
5d6e96ef | 1577 | |
ba5d6ab6 | 1578 | if (!bdrv_is_inserted(state->old_bs)) { |
c6bd8c70 | 1579 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
2d24b60b | 1580 | goto out; |
9b9877ee WX |
1581 | } |
1582 | ||
3718d8ab FZ |
1583 | if (bdrv_op_is_blocked(state->old_bs, |
1584 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
2d24b60b | 1585 | goto out; |
9b9877ee WX |
1586 | } |
1587 | ||
ba5d6ab6 SH |
1588 | if (!bdrv_is_read_only(state->old_bs)) { |
1589 | if (bdrv_flush(state->old_bs)) { | |
c6bd8c70 | 1590 | error_setg(errp, QERR_IO_ERROR); |
2d24b60b | 1591 | goto out; |
9b9877ee WX |
1592 | } |
1593 | } | |
1594 | ||
43de7e2d | 1595 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
32bafa8f | 1596 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
43de7e2d AG |
1597 | const char *format = s->has_format ? s->format : "qcow2"; |
1598 | enum NewImageMode mode; | |
1599 | const char *snapshot_node_name = | |
1600 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; | |
9b9877ee | 1601 | |
43de7e2d | 1602 | if (node_name && !snapshot_node_name) { |
a2bb6f8c | 1603 | error_setg(errp, "New overlay node name missing"); |
2d24b60b | 1604 | goto out; |
9b9877ee | 1605 | } |
9b9877ee | 1606 | |
43de7e2d AG |
1607 | if (snapshot_node_name && |
1608 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { | |
a2bb6f8c | 1609 | error_setg(errp, "New overlay node name already in use"); |
2d24b60b | 1610 | goto out; |
43de7e2d AG |
1611 | } |
1612 | ||
1613 | flags = state->old_bs->open_flags; | |
2a32c6e8 JS |
1614 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_COPY_ON_READ); |
1615 | flags |= BDRV_O_NO_BACKING; | |
43de7e2d AG |
1616 | |
1617 | /* create new image w/backing file */ | |
1618 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1619 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
f86b8b58 KW |
1620 | int64_t size = bdrv_getlength(state->old_bs); |
1621 | if (size < 0) { | |
1622 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
2d24b60b | 1623 | goto out; |
f86b8b58 | 1624 | } |
f30c66ba | 1625 | bdrv_refresh_filename(state->old_bs); |
43de7e2d AG |
1626 | bdrv_img_create(new_image_file, format, |
1627 | state->old_bs->filename, | |
1628 | state->old_bs->drv->format_name, | |
9217283d | 1629 | NULL, size, flags, false, &local_err); |
43de7e2d AG |
1630 | if (local_err) { |
1631 | error_propagate(errp, local_err); | |
2d24b60b | 1632 | goto out; |
43de7e2d AG |
1633 | } |
1634 | } | |
1635 | ||
1636 | options = qdict_new(); | |
d52e1a0e | 1637 | if (snapshot_node_name) { |
46f5ac20 | 1638 | qdict_put_str(options, "node-name", snapshot_node_name); |
43de7e2d | 1639 | } |
46f5ac20 | 1640 | qdict_put_str(options, "driver", format); |
0901f67e BC |
1641 | } |
1642 | ||
5b363937 HR |
1643 | state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags, |
1644 | errp); | |
f67503e5 | 1645 | /* We will manually add the backing_hd field to the bs later */ |
5b363937 | 1646 | if (!state->new_bs) { |
2d24b60b | 1647 | goto out; |
43de7e2d AG |
1648 | } |
1649 | ||
1f0c461b | 1650 | if (bdrv_has_blk(state->new_bs)) { |
a2bb6f8c | 1651 | error_setg(errp, "The overlay is already in use"); |
2d24b60b | 1652 | goto out; |
43de7e2d AG |
1653 | } |
1654 | ||
1655 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, | |
1656 | errp)) { | |
2d24b60b | 1657 | goto out; |
43de7e2d AG |
1658 | } |
1659 | ||
1660 | if (state->new_bs->backing != NULL) { | |
a2bb6f8c | 1661 | error_setg(errp, "The overlay already has a backing image"); |
2d24b60b | 1662 | goto out; |
08b24cfe AG |
1663 | } |
1664 | ||
1665 | if (!state->new_bs->drv->supports_backing) { | |
a2bb6f8c | 1666 | error_setg(errp, "The overlay does not support backing images"); |
2d24b60b | 1667 | goto out; |
b2c2832c KW |
1668 | } |
1669 | ||
3ea67e08 SL |
1670 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
1671 | old_context = bdrv_get_aio_context(state->new_bs); | |
1672 | aio_context_release(aio_context); | |
1673 | aio_context_acquire(old_context); | |
1674 | ||
8ed7d42f | 1675 | ret = bdrv_try_set_aio_context(state->new_bs, aio_context, errp); |
3ea67e08 SL |
1676 | |
1677 | aio_context_release(old_context); | |
1678 | aio_context_acquire(aio_context); | |
1679 | ||
8ed7d42f KW |
1680 | if (ret < 0) { |
1681 | goto out; | |
1682 | } | |
c26a5ab7 | 1683 | |
b2c2832c KW |
1684 | /* This removes our old bs and adds the new bs. This is an operation that |
1685 | * can fail, so we need to do it in .prepare; undoing it for abort is | |
1686 | * always possible. */ | |
1687 | bdrv_ref(state->new_bs); | |
1688 | bdrv_append(state->new_bs, state->old_bs, &local_err); | |
1689 | if (local_err) { | |
1690 | error_propagate(errp, local_err); | |
2d24b60b | 1691 | goto out; |
9b9877ee | 1692 | } |
067acf28 | 1693 | state->overlay_appended = true; |
2d24b60b SH |
1694 | |
1695 | out: | |
1696 | aio_context_release(aio_context); | |
9b9877ee WX |
1697 | } |
1698 | ||
50f43f0f | 1699 | static void external_snapshot_commit(BlkActionState *common) |
3b0047e8 | 1700 | { |
ba5d6ab6 SH |
1701 | ExternalSnapshotState *state = |
1702 | DO_UPCAST(ExternalSnapshotState, common, common); | |
2d24b60b SH |
1703 | AioContext *aio_context; |
1704 | ||
1705 | aio_context = bdrv_get_aio_context(state->old_bs); | |
1706 | aio_context_acquire(aio_context); | |
ba0c86a3 | 1707 | |
3b0047e8 WX |
1708 | /* We don't need (or want) to use the transactional |
1709 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1710 | * don't want to abort all of them if one of them fails the reopen */ | |
d3faa13e | 1711 | if (!atomic_read(&state->old_bs->copy_on_read)) { |
1b57774f | 1712 | bdrv_reopen_set_read_only(state->old_bs, true, NULL); |
4c844983 | 1713 | } |
2d24b60b SH |
1714 | |
1715 | aio_context_release(aio_context); | |
3b0047e8 WX |
1716 | } |
1717 | ||
50f43f0f | 1718 | static void external_snapshot_abort(BlkActionState *common) |
96b86bf7 | 1719 | { |
ba5d6ab6 SH |
1720 | ExternalSnapshotState *state = |
1721 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1722 | if (state->new_bs) { | |
067acf28 | 1723 | if (state->overlay_appended) { |
2d24b60b | 1724 | AioContext *aio_context; |
377410f6 SL |
1725 | AioContext *tmp_context; |
1726 | int ret; | |
2d24b60b SH |
1727 | |
1728 | aio_context = bdrv_get_aio_context(state->old_bs); | |
1729 | aio_context_acquire(aio_context); | |
1730 | ||
719fc28c JC |
1731 | bdrv_ref(state->old_bs); /* we can't let bdrv_set_backind_hd() |
1732 | close state->old_bs; we need it */ | |
1733 | bdrv_set_backing_hd(state->new_bs, NULL, &error_abort); | |
377410f6 SL |
1734 | |
1735 | /* | |
1736 | * The call to bdrv_set_backing_hd() above returns state->old_bs to | |
1737 | * the main AioContext. As we're still going to be using it, return | |
1738 | * it to the AioContext it was before. | |
1739 | */ | |
1740 | tmp_context = bdrv_get_aio_context(state->old_bs); | |
1741 | if (aio_context != tmp_context) { | |
1742 | aio_context_release(aio_context); | |
1743 | aio_context_acquire(tmp_context); | |
1744 | ||
1745 | ret = bdrv_try_set_aio_context(state->old_bs, | |
1746 | aio_context, NULL); | |
1747 | assert(ret == 0); | |
1748 | ||
1749 | aio_context_release(tmp_context); | |
1750 | aio_context_acquire(aio_context); | |
1751 | } | |
1752 | ||
5fe31c25 | 1753 | bdrv_replace_node(state->new_bs, state->old_bs, &error_abort); |
719fc28c | 1754 | bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */ |
2d24b60b SH |
1755 | |
1756 | aio_context_release(aio_context); | |
b2c2832c | 1757 | } |
96b86bf7 | 1758 | } |
da763e83 FZ |
1759 | } |
1760 | ||
50f43f0f | 1761 | static void external_snapshot_clean(BlkActionState *common) |
da763e83 FZ |
1762 | { |
1763 | ExternalSnapshotState *state = | |
1764 | DO_UPCAST(ExternalSnapshotState, common, common); | |
2d24b60b SH |
1765 | AioContext *aio_context; |
1766 | ||
1767 | if (!state->old_bs) { | |
1768 | return; | |
5d6e96ef | 1769 | } |
2d24b60b SH |
1770 | |
1771 | aio_context = bdrv_get_aio_context(state->old_bs); | |
1772 | aio_context_acquire(aio_context); | |
1773 | ||
1774 | bdrv_drained_end(state->old_bs); | |
1775 | bdrv_unref(state->new_bs); | |
1776 | ||
1777 | aio_context_release(aio_context); | |
96b86bf7 WX |
1778 | } |
1779 | ||
3037f364 | 1780 | typedef struct DriveBackupState { |
50f43f0f | 1781 | BlkActionState common; |
3037f364 SH |
1782 | BlockDriverState *bs; |
1783 | BlockJob *job; | |
1784 | } DriveBackupState; | |
1785 | ||
2288ccfa SL |
1786 | static BlockJob *do_backup_common(BackupCommon *backup, |
1787 | BlockDriverState *bs, | |
1788 | BlockDriverState *target_bs, | |
1789 | AioContext *aio_context, | |
1790 | JobTxn *txn, Error **errp); | |
78f51fde | 1791 | |
50f43f0f | 1792 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
3037f364 SH |
1793 | { |
1794 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1795 | DriveBackup *backup; | |
2288ccfa SL |
1796 | BlockDriverState *bs; |
1797 | BlockDriverState *target_bs; | |
1798 | BlockDriverState *source = NULL; | |
66d56054 | 1799 | AioContext *aio_context; |
3ea67e08 | 1800 | AioContext *old_context; |
2288ccfa | 1801 | QDict *options; |
3037f364 | 1802 | Error *local_err = NULL; |
2288ccfa SL |
1803 | int flags; |
1804 | int64_t size; | |
1805 | bool set_backing_hd = false; | |
3ea67e08 | 1806 | int ret; |
3037f364 | 1807 | |
6a8f9661 | 1808 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
32bafa8f | 1809 | backup = common->action->u.drive_backup.data; |
3037f364 | 1810 | |
2288ccfa SL |
1811 | if (!backup->has_mode) { |
1812 | backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1813 | } | |
1814 | ||
85c9d133 | 1815 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
b7e4fa22 | 1816 | if (!bs) { |
1fdd4b7b FZ |
1817 | return; |
1818 | } | |
1819 | ||
2288ccfa SL |
1820 | if (!bs->drv) { |
1821 | error_setg(errp, "Device has no medium"); | |
1822 | return; | |
1823 | } | |
1824 | ||
66d56054 SH |
1825 | aio_context = bdrv_get_aio_context(bs); |
1826 | aio_context_acquire(aio_context); | |
1827 | ||
1828 | /* Paired with .clean() */ | |
b7e4fa22 | 1829 | bdrv_drained_begin(bs); |
66d56054 | 1830 | |
2288ccfa SL |
1831 | if (!backup->has_format) { |
1832 | backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ? | |
1833 | NULL : (char *) bs->drv->format_name; | |
1834 | } | |
1835 | ||
1836 | /* Early check to avoid creating target */ | |
1837 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { | |
1838 | goto out; | |
1839 | } | |
1840 | ||
1841 | flags = bs->open_flags | BDRV_O_RDWR; | |
1842 | ||
1843 | /* | |
1844 | * See if we have a backing HD we can use to create our new image | |
1845 | * on top of. | |
1846 | */ | |
1847 | if (backup->sync == MIRROR_SYNC_MODE_TOP) { | |
1848 | source = backing_bs(bs); | |
1849 | if (!source) { | |
1850 | backup->sync = MIRROR_SYNC_MODE_FULL; | |
1851 | } | |
1852 | } | |
1853 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { | |
1854 | source = bs; | |
1855 | flags |= BDRV_O_NO_BACKING; | |
1856 | set_backing_hd = true; | |
1857 | } | |
1858 | ||
1859 | size = bdrv_getlength(bs); | |
1860 | if (size < 0) { | |
1861 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1862 | goto out; | |
1863 | } | |
1864 | ||
1865 | if (backup->mode != NEW_IMAGE_MODE_EXISTING) { | |
1866 | assert(backup->format); | |
1867 | if (source) { | |
1868 | bdrv_refresh_filename(source); | |
1869 | bdrv_img_create(backup->target, backup->format, source->filename, | |
1870 | source->drv->format_name, NULL, | |
1871 | size, flags, false, &local_err); | |
1872 | } else { | |
1873 | bdrv_img_create(backup->target, backup->format, NULL, NULL, NULL, | |
1874 | size, flags, false, &local_err); | |
1875 | } | |
1876 | } | |
5d6e96ef | 1877 | |
84d18f06 | 1878 | if (local_err) { |
3037f364 | 1879 | error_propagate(errp, local_err); |
66d56054 | 1880 | goto out; |
3037f364 | 1881 | } |
66d56054 | 1882 | |
2288ccfa SL |
1883 | options = qdict_new(); |
1884 | qdict_put_str(options, "discard", "unmap"); | |
1885 | qdict_put_str(options, "detect-zeroes", "unmap"); | |
1886 | if (backup->format) { | |
1887 | qdict_put_str(options, "driver", backup->format); | |
1888 | } | |
1889 | ||
1890 | target_bs = bdrv_open(backup->target, NULL, options, flags, errp); | |
1891 | if (!target_bs) { | |
1892 | goto out; | |
1893 | } | |
1894 | ||
3ea67e08 SL |
1895 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
1896 | old_context = bdrv_get_aio_context(target_bs); | |
1897 | aio_context_release(aio_context); | |
1898 | aio_context_acquire(old_context); | |
1899 | ||
1900 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); | |
1901 | if (ret < 0) { | |
1902 | bdrv_unref(target_bs); | |
1903 | aio_context_release(old_context); | |
1904 | return; | |
1905 | } | |
1906 | ||
1907 | aio_context_release(old_context); | |
1908 | aio_context_acquire(aio_context); | |
1909 | ||
2288ccfa SL |
1910 | if (set_backing_hd) { |
1911 | bdrv_set_backing_hd(target_bs, source, &local_err); | |
1912 | if (local_err) { | |
1913 | goto unref; | |
1914 | } | |
1915 | } | |
1916 | ||
1917 | state->bs = bs; | |
1918 | ||
1919 | state->job = do_backup_common(qapi_DriveBackup_base(backup), | |
1920 | bs, target_bs, aio_context, | |
1921 | common->block_job_txn, errp); | |
1922 | ||
1923 | unref: | |
1924 | bdrv_unref(target_bs); | |
66d56054 SH |
1925 | out: |
1926 | aio_context_release(aio_context); | |
111049a4 | 1927 | } |
3037f364 | 1928 | |
111049a4 JS |
1929 | static void drive_backup_commit(BlkActionState *common) |
1930 | { | |
1931 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
66d56054 SH |
1932 | AioContext *aio_context; |
1933 | ||
1934 | aio_context = bdrv_get_aio_context(state->bs); | |
1935 | aio_context_acquire(aio_context); | |
1936 | ||
111049a4 | 1937 | assert(state->job); |
da01ff7f | 1938 | job_start(&state->job->job); |
66d56054 SH |
1939 | |
1940 | aio_context_release(aio_context); | |
3037f364 SH |
1941 | } |
1942 | ||
50f43f0f | 1943 | static void drive_backup_abort(BlkActionState *common) |
3037f364 SH |
1944 | { |
1945 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
3037f364 | 1946 | |
111049a4 | 1947 | if (state->job) { |
66d56054 SH |
1948 | AioContext *aio_context; |
1949 | ||
1950 | aio_context = bdrv_get_aio_context(state->bs); | |
1951 | aio_context_acquire(aio_context); | |
1952 | ||
3d70ff53 | 1953 | job_cancel_sync(&state->job->job); |
66d56054 SH |
1954 | |
1955 | aio_context_release(aio_context); | |
3037f364 SH |
1956 | } |
1957 | } | |
1958 | ||
50f43f0f | 1959 | static void drive_backup_clean(BlkActionState *common) |
5d6e96ef SH |
1960 | { |
1961 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
66d56054 | 1962 | AioContext *aio_context; |
5d6e96ef | 1963 | |
66d56054 SH |
1964 | if (!state->bs) { |
1965 | return; | |
5d6e96ef | 1966 | } |
66d56054 SH |
1967 | |
1968 | aio_context = bdrv_get_aio_context(state->bs); | |
1969 | aio_context_acquire(aio_context); | |
1970 | ||
1971 | bdrv_drained_end(state->bs); | |
1972 | ||
1973 | aio_context_release(aio_context); | |
5d6e96ef SH |
1974 | } |
1975 | ||
bd8baecd | 1976 | typedef struct BlockdevBackupState { |
50f43f0f | 1977 | BlkActionState common; |
bd8baecd FZ |
1978 | BlockDriverState *bs; |
1979 | BlockJob *job; | |
bd8baecd FZ |
1980 | } BlockdevBackupState; |
1981 | ||
50f43f0f | 1982 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
bd8baecd FZ |
1983 | { |
1984 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1985 | BlockdevBackup *backup; | |
5b7bfe51 SL |
1986 | BlockDriverState *bs; |
1987 | BlockDriverState *target_bs; | |
edd5adee | 1988 | AioContext *aio_context; |
3ea67e08 SL |
1989 | AioContext *old_context; |
1990 | int ret; | |
bd8baecd | 1991 | |
6a8f9661 | 1992 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
32bafa8f | 1993 | backup = common->action->u.blockdev_backup.data; |
bd8baecd | 1994 | |
930fe17f | 1995 | bs = bdrv_lookup_bs(backup->device, backup->device, errp); |
cef34eeb | 1996 | if (!bs) { |
ff52bf36 FZ |
1997 | return; |
1998 | } | |
1999 | ||
5b7bfe51 SL |
2000 | target_bs = bdrv_lookup_bs(backup->target, backup->target, errp); |
2001 | if (!target_bs) { | |
bd8baecd FZ |
2002 | return; |
2003 | } | |
2004 | ||
3ea67e08 | 2005 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
edd5adee | 2006 | aio_context = bdrv_get_aio_context(bs); |
3ea67e08 SL |
2007 | old_context = bdrv_get_aio_context(target_bs); |
2008 | aio_context_acquire(old_context); | |
2009 | ||
2010 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); | |
2011 | if (ret < 0) { | |
2012 | aio_context_release(old_context); | |
2013 | return; | |
2014 | } | |
2015 | ||
2016 | aio_context_release(old_context); | |
edd5adee | 2017 | aio_context_acquire(aio_context); |
cef34eeb | 2018 | state->bs = bs; |
edd5adee SH |
2019 | |
2020 | /* Paired with .clean() */ | |
ff52bf36 | 2021 | bdrv_drained_begin(state->bs); |
bd8baecd | 2022 | |
5b7bfe51 SL |
2023 | state->job = do_backup_common(qapi_BlockdevBackup_base(backup), |
2024 | bs, target_bs, aio_context, | |
2025 | common->block_job_txn, errp); | |
edd5adee | 2026 | |
edd5adee | 2027 | aio_context_release(aio_context); |
111049a4 | 2028 | } |
bd8baecd | 2029 | |
111049a4 JS |
2030 | static void blockdev_backup_commit(BlkActionState *common) |
2031 | { | |
2032 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
edd5adee SH |
2033 | AioContext *aio_context; |
2034 | ||
2035 | aio_context = bdrv_get_aio_context(state->bs); | |
2036 | aio_context_acquire(aio_context); | |
2037 | ||
111049a4 | 2038 | assert(state->job); |
da01ff7f | 2039 | job_start(&state->job->job); |
edd5adee SH |
2040 | |
2041 | aio_context_release(aio_context); | |
bd8baecd FZ |
2042 | } |
2043 | ||
50f43f0f | 2044 | static void blockdev_backup_abort(BlkActionState *common) |
bd8baecd FZ |
2045 | { |
2046 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
bd8baecd | 2047 | |
111049a4 | 2048 | if (state->job) { |
edd5adee SH |
2049 | AioContext *aio_context; |
2050 | ||
2051 | aio_context = bdrv_get_aio_context(state->bs); | |
2052 | aio_context_acquire(aio_context); | |
2053 | ||
3d70ff53 | 2054 | job_cancel_sync(&state->job->job); |
edd5adee SH |
2055 | |
2056 | aio_context_release(aio_context); | |
bd8baecd FZ |
2057 | } |
2058 | } | |
2059 | ||
50f43f0f | 2060 | static void blockdev_backup_clean(BlkActionState *common) |
bd8baecd FZ |
2061 | { |
2062 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
edd5adee | 2063 | AioContext *aio_context; |
bd8baecd | 2064 | |
edd5adee SH |
2065 | if (!state->bs) { |
2066 | return; | |
bd8baecd | 2067 | } |
edd5adee SH |
2068 | |
2069 | aio_context = bdrv_get_aio_context(state->bs); | |
2070 | aio_context_acquire(aio_context); | |
2071 | ||
2072 | bdrv_drained_end(state->bs); | |
2073 | ||
2074 | aio_context_release(aio_context); | |
bd8baecd FZ |
2075 | } |
2076 | ||
df9a681d | 2077 | typedef struct BlockDirtyBitmapState { |
50f43f0f | 2078 | BlkActionState common; |
df9a681d FZ |
2079 | BdrvDirtyBitmap *bitmap; |
2080 | BlockDriverState *bs; | |
df9a681d FZ |
2081 | HBitmap *backup; |
2082 | bool prepared; | |
c6490447 | 2083 | bool was_enabled; |
df9a681d FZ |
2084 | } BlockDirtyBitmapState; |
2085 | ||
50f43f0f | 2086 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
df9a681d FZ |
2087 | Error **errp) |
2088 | { | |
2089 | Error *local_err = NULL; | |
2090 | BlockDirtyBitmapAdd *action; | |
2091 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2092 | common, common); | |
2093 | ||
94d16a64 JS |
2094 | if (action_check_completion_mode(common, errp) < 0) { |
2095 | return; | |
2096 | } | |
2097 | ||
32bafa8f | 2098 | action = common->action->u.block_dirty_bitmap_add.data; |
df9a681d FZ |
2099 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
2100 | qmp_block_dirty_bitmap_add(action->node, action->name, | |
2101 | action->has_granularity, action->granularity, | |
fd5ae4cc | 2102 | action->has_persistent, action->persistent, |
0e2b7f09 | 2103 | action->has_disabled, action->disabled, |
df9a681d FZ |
2104 | &local_err); |
2105 | ||
2106 | if (!local_err) { | |
2107 | state->prepared = true; | |
2108 | } else { | |
2109 | error_propagate(errp, local_err); | |
2110 | } | |
2111 | } | |
2112 | ||
50f43f0f | 2113 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
df9a681d FZ |
2114 | { |
2115 | BlockDirtyBitmapAdd *action; | |
2116 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2117 | common, common); | |
2118 | ||
32bafa8f | 2119 | action = common->action->u.block_dirty_bitmap_add.data; |
df9a681d FZ |
2120 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
2121 | * then the node reference and bitmap name must have been valid. | |
2122 | */ | |
2123 | if (state->prepared) { | |
2124 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); | |
2125 | } | |
2126 | } | |
2127 | ||
50f43f0f | 2128 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
df9a681d FZ |
2129 | Error **errp) |
2130 | { | |
2131 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2132 | common, common); | |
2133 | BlockDirtyBitmap *action; | |
2134 | ||
94d16a64 JS |
2135 | if (action_check_completion_mode(common, errp) < 0) { |
2136 | return; | |
2137 | } | |
2138 | ||
32bafa8f | 2139 | action = common->action->u.block_dirty_bitmap_clear.data; |
df9a681d FZ |
2140 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
2141 | action->name, | |
2142 | &state->bs, | |
df9a681d FZ |
2143 | errp); |
2144 | if (!state->bitmap) { | |
2145 | return; | |
2146 | } | |
2147 | ||
3ae96d66 | 2148 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_DEFAULT, errp)) { |
d6883bc9 | 2149 | return; |
df9a681d FZ |
2150 | } |
2151 | ||
2152 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); | |
df9a681d FZ |
2153 | } |
2154 | ||
5c4cf8b2 | 2155 | static void block_dirty_bitmap_restore(BlkActionState *common) |
df9a681d FZ |
2156 | { |
2157 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2158 | common, common); | |
2159 | ||
184dd9c4 | 2160 | if (state->backup) { |
56bd6624 | 2161 | bdrv_restore_dirty_bitmap(state->bitmap, state->backup); |
184dd9c4 | 2162 | } |
df9a681d FZ |
2163 | } |
2164 | ||
5c4cf8b2 | 2165 | static void block_dirty_bitmap_free_backup(BlkActionState *common) |
df9a681d FZ |
2166 | { |
2167 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2168 | common, common); | |
2169 | ||
2170 | hbitmap_free(state->backup); | |
2171 | } | |
2172 | ||
c6490447 VSO |
2173 | static void block_dirty_bitmap_enable_prepare(BlkActionState *common, |
2174 | Error **errp) | |
2175 | { | |
2176 | BlockDirtyBitmap *action; | |
2177 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2178 | common, common); | |
2179 | ||
2180 | if (action_check_completion_mode(common, errp) < 0) { | |
2181 | return; | |
2182 | } | |
2183 | ||
0e2b7f09 | 2184 | action = common->action->u.block_dirty_bitmap_enable.data; |
c6490447 VSO |
2185 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
2186 | action->name, | |
2187 | NULL, | |
2188 | errp); | |
2189 | if (!state->bitmap) { | |
2190 | return; | |
2191 | } | |
2192 | ||
3ae96d66 | 2193 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
b053bb55 JS |
2194 | return; |
2195 | } | |
2196 | ||
c6490447 VSO |
2197 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
2198 | bdrv_enable_dirty_bitmap(state->bitmap); | |
2199 | } | |
2200 | ||
2201 | static void block_dirty_bitmap_enable_abort(BlkActionState *common) | |
2202 | { | |
2203 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2204 | common, common); | |
2205 | ||
2206 | if (!state->was_enabled) { | |
2207 | bdrv_disable_dirty_bitmap(state->bitmap); | |
2208 | } | |
2209 | } | |
2210 | ||
2211 | static void block_dirty_bitmap_disable_prepare(BlkActionState *common, | |
2212 | Error **errp) | |
2213 | { | |
2214 | BlockDirtyBitmap *action; | |
2215 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2216 | common, common); | |
2217 | ||
2218 | if (action_check_completion_mode(common, errp) < 0) { | |
2219 | return; | |
2220 | } | |
2221 | ||
0e2b7f09 | 2222 | action = common->action->u.block_dirty_bitmap_disable.data; |
c6490447 VSO |
2223 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
2224 | action->name, | |
2225 | NULL, | |
2226 | errp); | |
2227 | if (!state->bitmap) { | |
2228 | return; | |
2229 | } | |
2230 | ||
3ae96d66 | 2231 | if (bdrv_dirty_bitmap_check(state->bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
b053bb55 JS |
2232 | return; |
2233 | } | |
2234 | ||
c6490447 VSO |
2235 | state->was_enabled = bdrv_dirty_bitmap_enabled(state->bitmap); |
2236 | bdrv_disable_dirty_bitmap(state->bitmap); | |
2237 | } | |
2238 | ||
2239 | static void block_dirty_bitmap_disable_abort(BlkActionState *common) | |
2240 | { | |
2241 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2242 | common, common); | |
2243 | ||
2244 | if (state->was_enabled) { | |
2245 | bdrv_enable_dirty_bitmap(state->bitmap); | |
2246 | } | |
2247 | } | |
2248 | ||
eff0829b VSO |
2249 | static BdrvDirtyBitmap *do_block_dirty_bitmap_merge( |
2250 | const char *node, const char *target, | |
2251 | BlockDirtyBitmapMergeSourceList *bitmaps, | |
2252 | HBitmap **backup, Error **errp); | |
360d4e4e | 2253 | |
6fd2e407 VSO |
2254 | static void block_dirty_bitmap_merge_prepare(BlkActionState *common, |
2255 | Error **errp) | |
2256 | { | |
2257 | BlockDirtyBitmapMerge *action; | |
2258 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2259 | common, common); | |
6fd2e407 VSO |
2260 | |
2261 | if (action_check_completion_mode(common, errp) < 0) { | |
2262 | return; | |
2263 | } | |
2264 | ||
0e2b7f09 | 2265 | action = common->action->u.block_dirty_bitmap_merge.data; |
6fd2e407 | 2266 | |
360d4e4e JS |
2267 | state->bitmap = do_block_dirty_bitmap_merge(action->node, action->target, |
2268 | action->bitmaps, &state->backup, | |
2269 | errp); | |
6fd2e407 VSO |
2270 | } |
2271 | ||
c4e4b0fa JS |
2272 | static BdrvDirtyBitmap *do_block_dirty_bitmap_remove( |
2273 | const char *node, const char *name, bool release, | |
2274 | BlockDriverState **bitmap_bs, Error **errp); | |
2275 | ||
2276 | static void block_dirty_bitmap_remove_prepare(BlkActionState *common, | |
2277 | Error **errp) | |
2278 | { | |
2279 | BlockDirtyBitmap *action; | |
2280 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2281 | common, common); | |
2282 | ||
2283 | if (action_check_completion_mode(common, errp) < 0) { | |
2284 | return; | |
2285 | } | |
2286 | ||
2287 | action = common->action->u.block_dirty_bitmap_remove.data; | |
2288 | ||
2289 | state->bitmap = do_block_dirty_bitmap_remove(action->node, action->name, | |
2290 | false, &state->bs, errp); | |
2291 | if (state->bitmap) { | |
2292 | bdrv_dirty_bitmap_skip_store(state->bitmap, true); | |
2293 | bdrv_dirty_bitmap_set_busy(state->bitmap, true); | |
2294 | } | |
2295 | } | |
2296 | ||
2297 | static void block_dirty_bitmap_remove_abort(BlkActionState *common) | |
2298 | { | |
2299 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2300 | common, common); | |
2301 | ||
2302 | if (state->bitmap) { | |
2303 | bdrv_dirty_bitmap_skip_store(state->bitmap, false); | |
2304 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); | |
2305 | } | |
2306 | } | |
2307 | ||
2308 | static void block_dirty_bitmap_remove_commit(BlkActionState *common) | |
2309 | { | |
2310 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2311 | common, common); | |
2312 | ||
2313 | bdrv_dirty_bitmap_set_busy(state->bitmap, false); | |
5deb6cbd | 2314 | bdrv_release_dirty_bitmap(state->bitmap); |
c4e4b0fa JS |
2315 | } |
2316 | ||
50f43f0f | 2317 | static void abort_prepare(BlkActionState *common, Error **errp) |
78b18b78 SH |
2318 | { |
2319 | error_setg(errp, "Transaction aborted using Abort action"); | |
2320 | } | |
2321 | ||
50f43f0f | 2322 | static void abort_commit(BlkActionState *common) |
78b18b78 | 2323 | { |
dfc6f865 | 2324 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
2325 | } |
2326 | ||
50f43f0f | 2327 | static const BlkActionOps actions[] = { |
43de7e2d AG |
2328 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
2329 | .instance_size = sizeof(ExternalSnapshotState), | |
2330 | .prepare = external_snapshot_prepare, | |
2331 | .commit = external_snapshot_commit, | |
2332 | .abort = external_snapshot_abort, | |
4ad6f3db | 2333 | .clean = external_snapshot_clean, |
43de7e2d | 2334 | }, |
c8a83e85 | 2335 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 2336 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
2337 | .prepare = external_snapshot_prepare, |
2338 | .commit = external_snapshot_commit, | |
2339 | .abort = external_snapshot_abort, | |
da763e83 | 2340 | .clean = external_snapshot_clean, |
ba0c86a3 | 2341 | }, |
3037f364 SH |
2342 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
2343 | .instance_size = sizeof(DriveBackupState), | |
2344 | .prepare = drive_backup_prepare, | |
111049a4 | 2345 | .commit = drive_backup_commit, |
3037f364 | 2346 | .abort = drive_backup_abort, |
5d6e96ef | 2347 | .clean = drive_backup_clean, |
3037f364 | 2348 | }, |
bd8baecd FZ |
2349 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
2350 | .instance_size = sizeof(BlockdevBackupState), | |
2351 | .prepare = blockdev_backup_prepare, | |
111049a4 | 2352 | .commit = blockdev_backup_commit, |
bd8baecd FZ |
2353 | .abort = blockdev_backup_abort, |
2354 | .clean = blockdev_backup_clean, | |
2355 | }, | |
78b18b78 | 2356 | [TRANSACTION_ACTION_KIND_ABORT] = { |
50f43f0f | 2357 | .instance_size = sizeof(BlkActionState), |
78b18b78 SH |
2358 | .prepare = abort_prepare, |
2359 | .commit = abort_commit, | |
2360 | }, | |
bbe86010 WX |
2361 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
2362 | .instance_size = sizeof(InternalSnapshotState), | |
2363 | .prepare = internal_snapshot_prepare, | |
2364 | .abort = internal_snapshot_abort, | |
5d6e96ef | 2365 | .clean = internal_snapshot_clean, |
bbe86010 | 2366 | }, |
df9a681d FZ |
2367 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
2368 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2369 | .prepare = block_dirty_bitmap_add_prepare, | |
2370 | .abort = block_dirty_bitmap_add_abort, | |
2371 | }, | |
2372 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { | |
2373 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2374 | .prepare = block_dirty_bitmap_clear_prepare, | |
5c4cf8b2 VSO |
2375 | .commit = block_dirty_bitmap_free_backup, |
2376 | .abort = block_dirty_bitmap_restore, | |
c6490447 | 2377 | }, |
0e2b7f09 | 2378 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ENABLE] = { |
c6490447 VSO |
2379 | .instance_size = sizeof(BlockDirtyBitmapState), |
2380 | .prepare = block_dirty_bitmap_enable_prepare, | |
2381 | .abort = block_dirty_bitmap_enable_abort, | |
2382 | }, | |
0e2b7f09 | 2383 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_DISABLE] = { |
c6490447 VSO |
2384 | .instance_size = sizeof(BlockDirtyBitmapState), |
2385 | .prepare = block_dirty_bitmap_disable_prepare, | |
2386 | .abort = block_dirty_bitmap_disable_abort, | |
66da04dd | 2387 | }, |
0e2b7f09 | 2388 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_MERGE] = { |
6fd2e407 VSO |
2389 | .instance_size = sizeof(BlockDirtyBitmapState), |
2390 | .prepare = block_dirty_bitmap_merge_prepare, | |
2391 | .commit = block_dirty_bitmap_free_backup, | |
2392 | .abort = block_dirty_bitmap_restore, | |
2393 | }, | |
c4e4b0fa JS |
2394 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_REMOVE] = { |
2395 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2396 | .prepare = block_dirty_bitmap_remove_prepare, | |
2397 | .commit = block_dirty_bitmap_remove_commit, | |
2398 | .abort = block_dirty_bitmap_remove_abort, | |
2399 | }, | |
66da04dd JS |
2400 | /* Where are transactions for MIRROR, COMMIT and STREAM? |
2401 | * Although these blockjobs use transaction callbacks like the backup job, | |
2402 | * these jobs do not necessarily adhere to transaction semantics. | |
2403 | * These jobs may not fully undo all of their actions on abort, nor do they | |
2404 | * necessarily work in transactions with more than one job in them. | |
2405 | */ | |
ba0c86a3 WX |
2406 | }; |
2407 | ||
94d16a64 JS |
2408 | /** |
2409 | * Allocate a TransactionProperties structure if necessary, and fill | |
2410 | * that structure with desired defaults if they are unset. | |
2411 | */ | |
2412 | static TransactionProperties *get_transaction_properties( | |
2413 | TransactionProperties *props) | |
2414 | { | |
2415 | if (!props) { | |
2416 | props = g_new0(TransactionProperties, 1); | |
2417 | } | |
2418 | ||
2419 | if (!props->has_completion_mode) { | |
2420 | props->has_completion_mode = true; | |
2421 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; | |
2422 | } | |
2423 | ||
2424 | return props; | |
2425 | } | |
2426 | ||
8802d1fd | 2427 | /* |
b756b9ce SH |
2428 | * 'Atomic' group operations. The operations are performed as a set, and if |
2429 | * any fail then we roll back all operations in the group. | |
8802d1fd | 2430 | */ |
94d16a64 JS |
2431 | void qmp_transaction(TransactionActionList *dev_list, |
2432 | bool has_props, | |
2433 | struct TransactionProperties *props, | |
2434 | Error **errp) | |
8802d1fd | 2435 | { |
c8a83e85 | 2436 | TransactionActionList *dev_entry = dev_list; |
62c9e416 | 2437 | JobTxn *block_job_txn = NULL; |
50f43f0f | 2438 | BlkActionState *state, *next; |
43e17041 | 2439 | Error *local_err = NULL; |
8802d1fd | 2440 | |
f4de0f8c JS |
2441 | QTAILQ_HEAD(, BlkActionState) snap_bdrv_states; |
2442 | QTAILQ_INIT(&snap_bdrv_states); | |
8802d1fd | 2443 | |
94d16a64 | 2444 | /* Does this transaction get canceled as a group on failure? |
62c9e416 | 2445 | * If not, we don't really need to make a JobTxn. |
94d16a64 JS |
2446 | */ |
2447 | props = get_transaction_properties(props); | |
2448 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
7eaa8fb5 | 2449 | block_job_txn = job_txn_new(); |
94d16a64 JS |
2450 | } |
2451 | ||
b756b9ce | 2452 | /* drain all i/o before any operations */ |
8802d1fd JC |
2453 | bdrv_drain_all(); |
2454 | ||
b756b9ce | 2455 | /* We don't do anything in this loop that commits us to the operations */ |
8802d1fd | 2456 | while (NULL != dev_entry) { |
c8a83e85 | 2457 | TransactionAction *dev_info = NULL; |
50f43f0f | 2458 | const BlkActionOps *ops; |
52e7c241 | 2459 | |
8802d1fd JC |
2460 | dev_info = dev_entry->value; |
2461 | dev_entry = dev_entry->next; | |
2462 | ||
6a8f9661 | 2463 | assert(dev_info->type < ARRAY_SIZE(actions)); |
ba0c86a3 | 2464 | |
6a8f9661 | 2465 | ops = &actions[dev_info->type]; |
aa3fe714 HR |
2466 | assert(ops->instance_size > 0); |
2467 | ||
ba5d6ab6 SH |
2468 | state = g_malloc0(ops->instance_size); |
2469 | state->ops = ops; | |
2470 | state->action = dev_info; | |
94d16a64 JS |
2471 | state->block_job_txn = block_job_txn; |
2472 | state->txn_props = props; | |
f4de0f8c | 2473 | QTAILQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
8802d1fd | 2474 | |
ba5d6ab6 | 2475 | state->ops->prepare(state, &local_err); |
84d18f06 | 2476 | if (local_err) { |
ba0c86a3 WX |
2477 | error_propagate(errp, local_err); |
2478 | goto delete_and_fail; | |
8802d1fd | 2479 | } |
8802d1fd JC |
2480 | } |
2481 | ||
f4de0f8c | 2482 | QTAILQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
2483 | if (state->ops->commit) { |
2484 | state->ops->commit(state); | |
2485 | } | |
8802d1fd JC |
2486 | } |
2487 | ||
2488 | /* success */ | |
2489 | goto exit; | |
2490 | ||
2491 | delete_and_fail: | |
b756b9ce | 2492 | /* failure, and it is all-or-none; roll back all operations */ |
f4de0f8c | 2493 | QTAILQ_FOREACH_REVERSE(state, &snap_bdrv_states, entry) { |
ba5d6ab6 SH |
2494 | if (state->ops->abort) { |
2495 | state->ops->abort(state); | |
ba0c86a3 | 2496 | } |
8802d1fd JC |
2497 | } |
2498 | exit: | |
f4de0f8c | 2499 | QTAILQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
ba5d6ab6 SH |
2500 | if (state->ops->clean) { |
2501 | state->ops->clean(state); | |
ba0c86a3 | 2502 | } |
ba5d6ab6 | 2503 | g_free(state); |
8802d1fd | 2504 | } |
94d16a64 JS |
2505 | if (!has_props) { |
2506 | qapi_free_TransactionProperties(props); | |
2507 | } | |
7eaa8fb5 | 2508 | job_txn_unref(block_job_txn); |
8802d1fd JC |
2509 | } |
2510 | ||
fbe2d816 KW |
2511 | void qmp_eject(bool has_device, const char *device, |
2512 | bool has_id, const char *id, | |
2513 | bool has_force, bool force, Error **errp) | |
666daa68 | 2514 | { |
38f54bd1 | 2515 | Error *local_err = NULL; |
3a3086b7 JS |
2516 | int rc; |
2517 | ||
2518 | if (!has_force) { | |
2519 | force = false; | |
2520 | } | |
666daa68 | 2521 | |
fbe2d816 KW |
2522 | rc = do_open_tray(has_device ? device : NULL, |
2523 | has_id ? id : NULL, | |
2524 | force, &local_err); | |
bf18bee5 | 2525 | if (rc && rc != -ENOSYS) { |
38f54bd1 | 2526 | error_propagate(errp, local_err); |
c245b6a3 | 2527 | return; |
92d48558 | 2528 | } |
bf18bee5 | 2529 | error_free(local_err); |
3a3086b7 | 2530 | |
82fcf66e | 2531 | blockdev_remove_medium(has_device, device, has_id, id, errp); |
666daa68 MA |
2532 | } |
2533 | ||
12d3ba82 BC |
2534 | void qmp_block_passwd(bool has_device, const char *device, |
2535 | bool has_node_name, const char *node_name, | |
2536 | const char *password, Error **errp) | |
666daa68 | 2537 | { |
c01c214b DB |
2538 | error_setg(errp, |
2539 | "Setting block passwords directly is no longer supported"); | |
666daa68 MA |
2540 | } |
2541 | ||
bf18bee5 CL |
2542 | /* |
2543 | * Attempt to open the tray of @device. | |
2544 | * If @force, ignore its tray lock. | |
2545 | * Else, if the tray is locked, don't open it, but ask the guest to open it. | |
2546 | * On error, store an error through @errp and return -errno. | |
2547 | * If @device does not exist, return -ENODEV. | |
2548 | * If it has no removable media, return -ENOTSUP. | |
2549 | * If it has no tray, return -ENOSYS. | |
2550 | * If the guest was asked to open the tray, return -EINPROGRESS. | |
2551 | * Else, return 0. | |
3a3086b7 | 2552 | */ |
b33945cf KW |
2553 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
2554 | bool force, Error **errp) | |
7d8a9f71 HR |
2555 | { |
2556 | BlockBackend *blk; | |
b33945cf | 2557 | const char *device = qdev_id ?: blk_name; |
7d8a9f71 HR |
2558 | bool locked; |
2559 | ||
b33945cf | 2560 | blk = qmp_get_blk(blk_name, qdev_id, errp); |
7d8a9f71 | 2561 | if (!blk) { |
3a3086b7 | 2562 | return -ENODEV; |
7d8a9f71 HR |
2563 | } |
2564 | ||
2565 | if (!blk_dev_has_removable_media(blk)) { | |
2566 | error_setg(errp, "Device '%s' is not removable", device); | |
3a3086b7 | 2567 | return -ENOTSUP; |
7d8a9f71 HR |
2568 | } |
2569 | ||
12c7ec87 | 2570 | if (!blk_dev_has_tray(blk)) { |
bf18bee5 CL |
2571 | error_setg(errp, "Device '%s' does not have a tray", device); |
2572 | return -ENOSYS; | |
12c7ec87 HR |
2573 | } |
2574 | ||
7d8a9f71 | 2575 | if (blk_dev_is_tray_open(blk)) { |
3a3086b7 | 2576 | return 0; |
7d8a9f71 HR |
2577 | } |
2578 | ||
2579 | locked = blk_dev_is_medium_locked(blk); | |
2580 | if (locked) { | |
2581 | blk_dev_eject_request(blk, force); | |
2582 | } | |
2583 | ||
2584 | if (!locked || force) { | |
39829a01 | 2585 | blk_dev_change_media_cb(blk, false, &error_abort); |
7d8a9f71 | 2586 | } |
3a3086b7 JS |
2587 | |
2588 | if (locked && !force) { | |
bf18bee5 CL |
2589 | error_setg(errp, "Device '%s' is locked and force was not specified, " |
2590 | "wait for tray to open and try again", device); | |
2591 | return -EINPROGRESS; | |
3a3086b7 JS |
2592 | } |
2593 | ||
2594 | return 0; | |
2595 | } | |
2596 | ||
b33945cf KW |
2597 | void qmp_blockdev_open_tray(bool has_device, const char *device, |
2598 | bool has_id, const char *id, | |
2599 | bool has_force, bool force, | |
3a3086b7 JS |
2600 | Error **errp) |
2601 | { | |
bf18bee5 CL |
2602 | Error *local_err = NULL; |
2603 | int rc; | |
2604 | ||
3a3086b7 JS |
2605 | if (!has_force) { |
2606 | force = false; | |
2607 | } | |
b33945cf KW |
2608 | rc = do_open_tray(has_device ? device : NULL, |
2609 | has_id ? id : NULL, | |
2610 | force, &local_err); | |
bf18bee5 CL |
2611 | if (rc && rc != -ENOSYS && rc != -EINPROGRESS) { |
2612 | error_propagate(errp, local_err); | |
2613 | return; | |
2614 | } | |
2615 | error_free(local_err); | |
7d8a9f71 HR |
2616 | } |
2617 | ||
b33945cf KW |
2618 | void qmp_blockdev_close_tray(bool has_device, const char *device, |
2619 | bool has_id, const char *id, | |
2620 | Error **errp) | |
abaaf59d HR |
2621 | { |
2622 | BlockBackend *blk; | |
39829a01 | 2623 | Error *local_err = NULL; |
abaaf59d | 2624 | |
b33945cf KW |
2625 | device = has_device ? device : NULL; |
2626 | id = has_id ? id : NULL; | |
2627 | ||
2628 | blk = qmp_get_blk(device, id, errp); | |
abaaf59d | 2629 | if (!blk) { |
abaaf59d HR |
2630 | return; |
2631 | } | |
2632 | ||
2633 | if (!blk_dev_has_removable_media(blk)) { | |
b33945cf | 2634 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
abaaf59d HR |
2635 | return; |
2636 | } | |
2637 | ||
12c7ec87 HR |
2638 | if (!blk_dev_has_tray(blk)) { |
2639 | /* Ignore this command on tray-less devices */ | |
2640 | return; | |
2641 | } | |
2642 | ||
abaaf59d HR |
2643 | if (!blk_dev_is_tray_open(blk)) { |
2644 | return; | |
2645 | } | |
2646 | ||
39829a01 KW |
2647 | blk_dev_change_media_cb(blk, true, &local_err); |
2648 | if (local_err) { | |
2649 | error_propagate(errp, local_err); | |
2650 | return; | |
2651 | } | |
abaaf59d HR |
2652 | } |
2653 | ||
82fcf66e HR |
2654 | static void blockdev_remove_medium(bool has_device, const char *device, |
2655 | bool has_id, const char *id, Error **errp) | |
2814f672 HR |
2656 | { |
2657 | BlockBackend *blk; | |
2658 | BlockDriverState *bs; | |
2659 | AioContext *aio_context; | |
00949bab | 2660 | bool has_attached_device; |
2814f672 | 2661 | |
00949bab KW |
2662 | device = has_device ? device : NULL; |
2663 | id = has_id ? id : NULL; | |
2664 | ||
2665 | blk = qmp_get_blk(device, id, errp); | |
2814f672 | 2666 | if (!blk) { |
2814f672 HR |
2667 | return; |
2668 | } | |
2669 | ||
2670 | /* For BBs without a device, we can exchange the BDS tree at will */ | |
00949bab | 2671 | has_attached_device = blk_get_attached_dev(blk); |
2814f672 | 2672 | |
00949bab KW |
2673 | if (has_attached_device && !blk_dev_has_removable_media(blk)) { |
2674 | error_setg(errp, "Device '%s' is not removable", device ?: id); | |
2814f672 HR |
2675 | return; |
2676 | } | |
2677 | ||
00949bab KW |
2678 | if (has_attached_device && blk_dev_has_tray(blk) && |
2679 | !blk_dev_is_tray_open(blk)) | |
2680 | { | |
2681 | error_setg(errp, "Tray of device '%s' is not open", device ?: id); | |
2814f672 HR |
2682 | return; |
2683 | } | |
2684 | ||
2685 | bs = blk_bs(blk); | |
2686 | if (!bs) { | |
2687 | return; | |
2688 | } | |
2689 | ||
2690 | aio_context = bdrv_get_aio_context(bs); | |
2691 | aio_context_acquire(aio_context); | |
2692 | ||
2693 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { | |
2694 | goto out; | |
2695 | } | |
2696 | ||
2814f672 HR |
2697 | blk_remove_bs(blk); |
2698 | ||
12c7ec87 HR |
2699 | if (!blk_dev_has_tray(blk)) { |
2700 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be | |
2701 | * called at all); therefore, the medium needs to be ejected here. | |
2702 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load | |
2703 | * value passed here (i.e. false). */ | |
39829a01 | 2704 | blk_dev_change_media_cb(blk, false, &error_abort); |
12c7ec87 HR |
2705 | } |
2706 | ||
2814f672 HR |
2707 | out: |
2708 | aio_context_release(aio_context); | |
2709 | } | |
2710 | ||
34ce1111 | 2711 | void qmp_blockdev_remove_medium(const char *id, Error **errp) |
82fcf66e HR |
2712 | { |
2713 | blockdev_remove_medium(false, NULL, true, id, errp); | |
2714 | } | |
2715 | ||
716df217 | 2716 | static void qmp_blockdev_insert_anon_medium(BlockBackend *blk, |
d1299882 HR |
2717 | BlockDriverState *bs, Error **errp) |
2718 | { | |
39829a01 | 2719 | Error *local_err = NULL; |
d1299882 | 2720 | bool has_device; |
d7086422 | 2721 | int ret; |
d1299882 | 2722 | |
d1299882 HR |
2723 | /* For BBs without a device, we can exchange the BDS tree at will */ |
2724 | has_device = blk_get_attached_dev(blk); | |
2725 | ||
2726 | if (has_device && !blk_dev_has_removable_media(blk)) { | |
716df217 | 2727 | error_setg(errp, "Device is not removable"); |
d1299882 HR |
2728 | return; |
2729 | } | |
2730 | ||
12c7ec87 | 2731 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
716df217 | 2732 | error_setg(errp, "Tray of the device is not open"); |
d1299882 HR |
2733 | return; |
2734 | } | |
2735 | ||
2736 | if (blk_bs(blk)) { | |
716df217 | 2737 | error_setg(errp, "There already is a medium in the device"); |
d1299882 HR |
2738 | return; |
2739 | } | |
2740 | ||
d7086422 KW |
2741 | ret = blk_insert_bs(blk, bs, errp); |
2742 | if (ret < 0) { | |
2743 | return; | |
2744 | } | |
d1299882 | 2745 | |
12c7ec87 HR |
2746 | if (!blk_dev_has_tray(blk)) { |
2747 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be | |
2748 | * called at all); therefore, the medium needs to be pushed into the | |
2749 | * slot here. | |
2750 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load | |
2751 | * value passed here (i.e. true). */ | |
39829a01 KW |
2752 | blk_dev_change_media_cb(blk, true, &local_err); |
2753 | if (local_err) { | |
2754 | error_propagate(errp, local_err); | |
2755 | blk_remove_bs(blk); | |
2756 | return; | |
2757 | } | |
12c7ec87 | 2758 | } |
d1299882 HR |
2759 | } |
2760 | ||
82fcf66e HR |
2761 | static void blockdev_insert_medium(bool has_device, const char *device, |
2762 | bool has_id, const char *id, | |
2763 | const char *node_name, Error **errp) | |
d1299882 | 2764 | { |
716df217 | 2765 | BlockBackend *blk; |
d1299882 HR |
2766 | BlockDriverState *bs; |
2767 | ||
716df217 KW |
2768 | blk = qmp_get_blk(has_device ? device : NULL, |
2769 | has_id ? id : NULL, | |
2770 | errp); | |
2771 | if (!blk) { | |
2772 | return; | |
2773 | } | |
2774 | ||
d1299882 HR |
2775 | bs = bdrv_find_node(node_name); |
2776 | if (!bs) { | |
2777 | error_setg(errp, "Node '%s' not found", node_name); | |
2778 | return; | |
2779 | } | |
2780 | ||
1f0c461b | 2781 | if (bdrv_has_blk(bs)) { |
e467da7b | 2782 | error_setg(errp, "Node '%s' is already in use", node_name); |
d1299882 HR |
2783 | return; |
2784 | } | |
2785 | ||
716df217 | 2786 | qmp_blockdev_insert_anon_medium(blk, bs, errp); |
d1299882 HR |
2787 | } |
2788 | ||
34ce1111 HR |
2789 | void qmp_blockdev_insert_medium(const char *id, const char *node_name, |
2790 | Error **errp) | |
82fcf66e HR |
2791 | { |
2792 | blockdev_insert_medium(false, NULL, true, id, node_name, errp); | |
2793 | } | |
2794 | ||
70e2cb3b KW |
2795 | void qmp_blockdev_change_medium(bool has_device, const char *device, |
2796 | bool has_id, const char *id, | |
2797 | const char *filename, | |
24fb4133 | 2798 | bool has_format, const char *format, |
39ff43d9 HR |
2799 | bool has_read_only, |
2800 | BlockdevChangeReadOnlyMode read_only, | |
24fb4133 | 2801 | Error **errp) |
de2c6c05 HR |
2802 | { |
2803 | BlockBackend *blk; | |
2804 | BlockDriverState *medium_bs = NULL; | |
5b363937 | 2805 | int bdrv_flags; |
b85114f8 | 2806 | bool detect_zeroes; |
38a53d50 | 2807 | int rc; |
de2c6c05 HR |
2808 | QDict *options = NULL; |
2809 | Error *err = NULL; | |
2810 | ||
70e2cb3b KW |
2811 | blk = qmp_get_blk(has_device ? device : NULL, |
2812 | has_id ? id : NULL, | |
2813 | errp); | |
de2c6c05 | 2814 | if (!blk) { |
de2c6c05 HR |
2815 | goto fail; |
2816 | } | |
2817 | ||
2818 | if (blk_bs(blk)) { | |
2819 | blk_update_root_state(blk); | |
2820 | } | |
2821 | ||
2822 | bdrv_flags = blk_get_open_flags_from_root_state(blk); | |
156abc2f | 2823 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
e35bdc12 | 2824 | BDRV_O_PROTOCOL | BDRV_O_AUTO_RDONLY); |
de2c6c05 | 2825 | |
39ff43d9 HR |
2826 | if (!has_read_only) { |
2827 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; | |
2828 | } | |
2829 | ||
2830 | switch (read_only) { | |
2831 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: | |
2832 | break; | |
2833 | ||
2834 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: | |
2835 | bdrv_flags &= ~BDRV_O_RDWR; | |
2836 | break; | |
2837 | ||
2838 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: | |
2839 | bdrv_flags |= BDRV_O_RDWR; | |
2840 | break; | |
2841 | ||
2842 | default: | |
2843 | abort(); | |
2844 | } | |
2845 | ||
b85114f8 KW |
2846 | options = qdict_new(); |
2847 | detect_zeroes = blk_get_detect_zeroes_from_root_state(blk); | |
46f5ac20 | 2848 | qdict_put_str(options, "detect-zeroes", detect_zeroes ? "on" : "off"); |
b85114f8 | 2849 | |
24fb4133 | 2850 | if (has_format) { |
46f5ac20 | 2851 | qdict_put_str(options, "driver", format); |
de2c6c05 HR |
2852 | } |
2853 | ||
5b363937 HR |
2854 | medium_bs = bdrv_open(filename, NULL, options, bdrv_flags, errp); |
2855 | if (!medium_bs) { | |
de2c6c05 HR |
2856 | goto fail; |
2857 | } | |
2858 | ||
70e2cb3b KW |
2859 | rc = do_open_tray(has_device ? device : NULL, |
2860 | has_id ? id : NULL, | |
2861 | false, &err); | |
38a53d50 | 2862 | if (rc && rc != -ENOSYS) { |
de2c6c05 HR |
2863 | error_propagate(errp, err); |
2864 | goto fail; | |
2865 | } | |
38a53d50 CL |
2866 | error_free(err); |
2867 | err = NULL; | |
de2c6c05 | 2868 | |
82fcf66e | 2869 | blockdev_remove_medium(has_device, device, has_id, id, &err); |
de2c6c05 HR |
2870 | if (err) { |
2871 | error_propagate(errp, err); | |
2872 | goto fail; | |
2873 | } | |
2874 | ||
716df217 | 2875 | qmp_blockdev_insert_anon_medium(blk, medium_bs, &err); |
de2c6c05 HR |
2876 | if (err) { |
2877 | error_propagate(errp, err); | |
2878 | goto fail; | |
2879 | } | |
2880 | ||
70e2cb3b | 2881 | qmp_blockdev_close_tray(has_device, device, has_id, id, errp); |
de2c6c05 HR |
2882 | |
2883 | fail: | |
2884 | /* If the medium has been inserted, the device has its own reference, so | |
2885 | * ours must be relinquished; and if it has not been inserted successfully, | |
2886 | * the reference must be relinquished anyway */ | |
2887 | bdrv_unref(medium_bs); | |
2888 | } | |
2889 | ||
727f005e | 2890 | /* throttling disk I/O limits */ |
4dc9397b | 2891 | void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp) |
727f005e | 2892 | { |
cc0681c4 | 2893 | ThrottleConfig cfg; |
727f005e | 2894 | BlockDriverState *bs; |
a0e8544c | 2895 | BlockBackend *blk; |
b15446fd | 2896 | AioContext *aio_context; |
727f005e | 2897 | |
7a9877a0 KW |
2898 | blk = qmp_get_blk(arg->has_device ? arg->device : NULL, |
2899 | arg->has_id ? arg->id : NULL, | |
2900 | errp); | |
a0e8544c | 2901 | if (!blk) { |
80047da5 | 2902 | return; |
727f005e | 2903 | } |
5433c24f HR |
2904 | |
2905 | aio_context = blk_get_aio_context(blk); | |
2906 | aio_context_acquire(aio_context); | |
2907 | ||
a0e8544c | 2908 | bs = blk_bs(blk); |
5433c24f | 2909 | if (!bs) { |
7a9877a0 | 2910 | error_setg(errp, "Device has no medium"); |
5433c24f HR |
2911 | goto out; |
2912 | } | |
727f005e | 2913 | |
1588ab5d | 2914 | throttle_config_init(&cfg); |
4dc9397b EB |
2915 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = arg->bps; |
2916 | cfg.buckets[THROTTLE_BPS_READ].avg = arg->bps_rd; | |
2917 | cfg.buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr; | |
cc0681c4 | 2918 | |
4dc9397b EB |
2919 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = arg->iops; |
2920 | cfg.buckets[THROTTLE_OPS_READ].avg = arg->iops_rd; | |
2921 | cfg.buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr; | |
cc0681c4 | 2922 | |
4dc9397b EB |
2923 | if (arg->has_bps_max) { |
2924 | cfg.buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max; | |
3e9fab69 | 2925 | } |
4dc9397b EB |
2926 | if (arg->has_bps_rd_max) { |
2927 | cfg.buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max; | |
3e9fab69 | 2928 | } |
4dc9397b EB |
2929 | if (arg->has_bps_wr_max) { |
2930 | cfg.buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max; | |
3e9fab69 | 2931 | } |
4dc9397b EB |
2932 | if (arg->has_iops_max) { |
2933 | cfg.buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max; | |
3e9fab69 | 2934 | } |
4dc9397b EB |
2935 | if (arg->has_iops_rd_max) { |
2936 | cfg.buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max; | |
3e9fab69 | 2937 | } |
4dc9397b EB |
2938 | if (arg->has_iops_wr_max) { |
2939 | cfg.buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max; | |
3e9fab69 | 2940 | } |
727f005e | 2941 | |
4dc9397b EB |
2942 | if (arg->has_bps_max_length) { |
2943 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = arg->bps_max_length; | |
dce13204 | 2944 | } |
4dc9397b EB |
2945 | if (arg->has_bps_rd_max_length) { |
2946 | cfg.buckets[THROTTLE_BPS_READ].burst_length = arg->bps_rd_max_length; | |
dce13204 | 2947 | } |
4dc9397b EB |
2948 | if (arg->has_bps_wr_max_length) { |
2949 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = arg->bps_wr_max_length; | |
dce13204 | 2950 | } |
4dc9397b EB |
2951 | if (arg->has_iops_max_length) { |
2952 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = arg->iops_max_length; | |
dce13204 | 2953 | } |
4dc9397b EB |
2954 | if (arg->has_iops_rd_max_length) { |
2955 | cfg.buckets[THROTTLE_OPS_READ].burst_length = arg->iops_rd_max_length; | |
dce13204 | 2956 | } |
4dc9397b EB |
2957 | if (arg->has_iops_wr_max_length) { |
2958 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = arg->iops_wr_max_length; | |
dce13204 AG |
2959 | } |
2960 | ||
4dc9397b EB |
2961 | if (arg->has_iops_size) { |
2962 | cfg.op_size = arg->iops_size; | |
2024c1df | 2963 | } |
cc0681c4 | 2964 | |
d5851089 | 2965 | if (!throttle_is_valid(&cfg, errp)) { |
5433c24f | 2966 | goto out; |
727f005e ZYW |
2967 | } |
2968 | ||
76f4afb4 AG |
2969 | if (throttle_enabled(&cfg)) { |
2970 | /* Enable I/O limits if they're not enabled yet, otherwise | |
2971 | * just update the throttling group. */ | |
022cdc9f | 2972 | if (!blk_get_public(blk)->throttle_group_member.throttle_state) { |
4dc9397b | 2973 | blk_io_limits_enable(blk, |
7a9877a0 KW |
2974 | arg->has_group ? arg->group : |
2975 | arg->has_device ? arg->device : | |
2976 | arg->id); | |
4dc9397b EB |
2977 | } else if (arg->has_group) { |
2978 | blk_io_limits_update_group(blk, arg->group); | |
76f4afb4 AG |
2979 | } |
2980 | /* Set the new throttling configuration */ | |
97148076 | 2981 | blk_set_io_limits(blk, &cfg); |
022cdc9f | 2982 | } else if (blk_get_public(blk)->throttle_group_member.throttle_state) { |
76f4afb4 | 2983 | /* If all throttling settings are set to 0, disable I/O limits */ |
97148076 | 2984 | blk_io_limits_disable(blk); |
727f005e | 2985 | } |
b15446fd | 2986 | |
5433c24f | 2987 | out: |
b15446fd | 2988 | aio_context_release(aio_context); |
727f005e ZYW |
2989 | } |
2990 | ||
341ebc2f JS |
2991 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
2992 | bool has_granularity, uint32_t granularity, | |
fd5ae4cc | 2993 | bool has_persistent, bool persistent, |
a6e2ca5f | 2994 | bool has_disabled, bool disabled, |
341ebc2f JS |
2995 | Error **errp) |
2996 | { | |
341ebc2f | 2997 | BlockDriverState *bs; |
fd5ae4cc | 2998 | BdrvDirtyBitmap *bitmap; |
91005a49 | 2999 | AioContext *aio_context; |
341ebc2f JS |
3000 | |
3001 | if (!name || name[0] == '\0') { | |
3002 | error_setg(errp, "Bitmap name cannot be empty"); | |
3003 | return; | |
3004 | } | |
3005 | ||
3006 | bs = bdrv_lookup_bs(node, node, errp); | |
3007 | if (!bs) { | |
3008 | return; | |
3009 | } | |
3010 | ||
91005a49 SL |
3011 | aio_context = bdrv_get_aio_context(bs); |
3012 | aio_context_acquire(aio_context); | |
3013 | ||
341ebc2f JS |
3014 | if (has_granularity) { |
3015 | if (granularity < 512 || !is_power_of_2(granularity)) { | |
3016 | error_setg(errp, "Granularity must be power of 2 " | |
3017 | "and at least 512"); | |
91005a49 | 3018 | goto out; |
341ebc2f JS |
3019 | } |
3020 | } else { | |
3021 | /* Default to cluster size, if available: */ | |
3022 | granularity = bdrv_get_default_bitmap_granularity(bs); | |
3023 | } | |
3024 | ||
fd5ae4cc VSO |
3025 | if (!has_persistent) { |
3026 | persistent = false; | |
3027 | } | |
eb738bb5 | 3028 | |
a6e2ca5f VSO |
3029 | if (!has_disabled) { |
3030 | disabled = false; | |
3031 | } | |
3032 | ||
d2c3080e VSO |
3033 | if (persistent && |
3034 | !bdrv_can_store_new_dirty_bitmap(bs, name, granularity, errp)) | |
3035 | { | |
91005a49 | 3036 | goto out; |
fd5ae4cc VSO |
3037 | } |
3038 | ||
3039 | bitmap = bdrv_create_dirty_bitmap(bs, granularity, name, errp); | |
eb738bb5 | 3040 | if (bitmap == NULL) { |
91005a49 | 3041 | goto out; |
fd5ae4cc | 3042 | } |
eb738bb5 | 3043 | |
a6e2ca5f VSO |
3044 | if (disabled) { |
3045 | bdrv_disable_dirty_bitmap(bitmap); | |
3046 | } | |
3047 | ||
796a3798 | 3048 | bdrv_dirty_bitmap_set_persistence(bitmap, persistent); |
91005a49 SL |
3049 | |
3050 | out: | |
3051 | aio_context_release(aio_context); | |
341ebc2f JS |
3052 | } |
3053 | ||
c4e4b0fa JS |
3054 | static BdrvDirtyBitmap *do_block_dirty_bitmap_remove( |
3055 | const char *node, const char *name, bool release, | |
3056 | BlockDriverState **bitmap_bs, Error **errp) | |
341ebc2f | 3057 | { |
341ebc2f JS |
3058 | BlockDriverState *bs; |
3059 | BdrvDirtyBitmap *bitmap; | |
91005a49 | 3060 | AioContext *aio_context; |
341ebc2f | 3061 | |
2119882c | 3062 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
341ebc2f | 3063 | if (!bitmap || !bs) { |
c4e4b0fa | 3064 | return NULL; |
341ebc2f JS |
3065 | } |
3066 | ||
91005a49 SL |
3067 | aio_context = bdrv_get_aio_context(bs); |
3068 | aio_context_acquire(aio_context); | |
3069 | ||
c3edf13c JS |
3070 | if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_BUSY | BDRV_BITMAP_RO, |
3071 | errp)) { | |
91005a49 | 3072 | aio_context_release(aio_context); |
c4e4b0fa | 3073 | return NULL; |
9bd2b08f | 3074 | } |
5c36c1af | 3075 | |
d2c3080e VSO |
3076 | if (bdrv_dirty_bitmap_get_persistence(bitmap) && |
3077 | bdrv_remove_persistent_dirty_bitmap(bs, name, errp) < 0) | |
3078 | { | |
91005a49 SL |
3079 | aio_context_release(aio_context); |
3080 | return NULL; | |
5c36c1af VSO |
3081 | } |
3082 | ||
c4e4b0fa | 3083 | if (release) { |
5deb6cbd | 3084 | bdrv_release_dirty_bitmap(bitmap); |
c4e4b0fa JS |
3085 | } |
3086 | ||
3087 | if (bitmap_bs) { | |
3088 | *bitmap_bs = bs; | |
3089 | } | |
3090 | ||
91005a49 | 3091 | aio_context_release(aio_context); |
c4e4b0fa JS |
3092 | return release ? NULL : bitmap; |
3093 | } | |
3094 | ||
3095 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, | |
3096 | Error **errp) | |
3097 | { | |
3098 | do_block_dirty_bitmap_remove(node, name, true, NULL, errp); | |
341ebc2f JS |
3099 | } |
3100 | ||
e74e6b78 JS |
3101 | /** |
3102 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap | |
3103 | * immediately after a full backup operation. | |
3104 | */ | |
3105 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, | |
3106 | Error **errp) | |
3107 | { | |
e74e6b78 JS |
3108 | BdrvDirtyBitmap *bitmap; |
3109 | BlockDriverState *bs; | |
3110 | ||
2119882c | 3111 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); |
e74e6b78 JS |
3112 | if (!bitmap || !bs) { |
3113 | return; | |
3114 | } | |
3115 | ||
3ae96d66 | 3116 | if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_DEFAULT, errp)) { |
d6883bc9 | 3117 | return; |
e74e6b78 JS |
3118 | } |
3119 | ||
df9a681d | 3120 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
e74e6b78 JS |
3121 | } |
3122 | ||
0e2b7f09 | 3123 | void qmp_block_dirty_bitmap_enable(const char *node, const char *name, |
5c5d2e50 VSO |
3124 | Error **errp) |
3125 | { | |
3126 | BlockDriverState *bs; | |
3127 | BdrvDirtyBitmap *bitmap; | |
3128 | ||
3129 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); | |
3130 | if (!bitmap) { | |
3131 | return; | |
3132 | } | |
3133 | ||
3ae96d66 | 3134 | if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
5c5d2e50 VSO |
3135 | return; |
3136 | } | |
3137 | ||
3138 | bdrv_enable_dirty_bitmap(bitmap); | |
3139 | } | |
3140 | ||
0e2b7f09 | 3141 | void qmp_block_dirty_bitmap_disable(const char *node, const char *name, |
5c5d2e50 VSO |
3142 | Error **errp) |
3143 | { | |
3144 | BlockDriverState *bs; | |
3145 | BdrvDirtyBitmap *bitmap; | |
3146 | ||
3147 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); | |
3148 | if (!bitmap) { | |
3149 | return; | |
3150 | } | |
3151 | ||
3ae96d66 | 3152 | if (bdrv_dirty_bitmap_check(bitmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
5c5d2e50 VSO |
3153 | return; |
3154 | } | |
3155 | ||
3156 | bdrv_disable_dirty_bitmap(bitmap); | |
3157 | } | |
3158 | ||
eff0829b VSO |
3159 | static BdrvDirtyBitmap *do_block_dirty_bitmap_merge( |
3160 | const char *node, const char *target, | |
3161 | BlockDirtyBitmapMergeSourceList *bitmaps, | |
3162 | HBitmap **backup, Error **errp) | |
b598e531 VSO |
3163 | { |
3164 | BlockDriverState *bs; | |
360d4e4e | 3165 | BdrvDirtyBitmap *dst, *src, *anon; |
eff0829b | 3166 | BlockDirtyBitmapMergeSourceList *lst; |
360d4e4e | 3167 | Error *local_err = NULL; |
b598e531 | 3168 | |
360d4e4e | 3169 | dst = block_dirty_bitmap_lookup(node, target, &bs, errp); |
b598e531 | 3170 | if (!dst) { |
360d4e4e | 3171 | return NULL; |
b598e531 VSO |
3172 | } |
3173 | ||
360d4e4e JS |
3174 | anon = bdrv_create_dirty_bitmap(bs, bdrv_dirty_bitmap_granularity(dst), |
3175 | NULL, errp); | |
3176 | if (!anon) { | |
3177 | return NULL; | |
3178 | } | |
3179 | ||
3180 | for (lst = bitmaps; lst; lst = lst->next) { | |
eff0829b VSO |
3181 | switch (lst->value->type) { |
3182 | const char *name, *node; | |
3183 | case QTYPE_QSTRING: | |
3184 | name = lst->value->u.local; | |
3185 | src = bdrv_find_dirty_bitmap(bs, name); | |
3186 | if (!src) { | |
3187 | error_setg(errp, "Dirty bitmap '%s' not found", name); | |
3188 | dst = NULL; | |
3189 | goto out; | |
3190 | } | |
3191 | break; | |
3192 | case QTYPE_QDICT: | |
3193 | node = lst->value->u.external.node; | |
3194 | name = lst->value->u.external.name; | |
3195 | src = block_dirty_bitmap_lookup(node, name, NULL, errp); | |
3196 | if (!src) { | |
3197 | dst = NULL; | |
3198 | goto out; | |
3199 | } | |
3200 | break; | |
3201 | default: | |
3202 | abort(); | |
360d4e4e JS |
3203 | } |
3204 | ||
3205 | bdrv_merge_dirty_bitmap(anon, src, NULL, &local_err); | |
3206 | if (local_err) { | |
3207 | error_propagate(errp, local_err); | |
3208 | dst = NULL; | |
3209 | goto out; | |
3210 | } | |
b598e531 VSO |
3211 | } |
3212 | ||
360d4e4e JS |
3213 | /* Merge into dst; dst is unchanged on failure. */ |
3214 | bdrv_merge_dirty_bitmap(dst, anon, backup, errp); | |
3215 | ||
3216 | out: | |
5deb6cbd | 3217 | bdrv_release_dirty_bitmap(anon); |
360d4e4e JS |
3218 | return dst; |
3219 | } | |
3220 | ||
0e2b7f09 | 3221 | void qmp_block_dirty_bitmap_merge(const char *node, const char *target, |
eff0829b VSO |
3222 | BlockDirtyBitmapMergeSourceList *bitmaps, |
3223 | Error **errp) | |
360d4e4e JS |
3224 | { |
3225 | do_block_dirty_bitmap_merge(node, target, bitmaps, NULL, errp); | |
b598e531 VSO |
3226 | } |
3227 | ||
a3b52535 VSO |
3228 | BlockDirtyBitmapSha256 *qmp_x_debug_block_dirty_bitmap_sha256(const char *node, |
3229 | const char *name, | |
3230 | Error **errp) | |
3231 | { | |
3232 | BdrvDirtyBitmap *bitmap; | |
3233 | BlockDriverState *bs; | |
3234 | BlockDirtyBitmapSha256 *ret = NULL; | |
3235 | char *sha256; | |
3236 | ||
3237 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, errp); | |
3238 | if (!bitmap || !bs) { | |
3239 | return NULL; | |
3240 | } | |
3241 | ||
3242 | sha256 = bdrv_dirty_bitmap_sha256(bitmap, errp); | |
3243 | if (sha256 == NULL) { | |
3244 | return NULL; | |
3245 | } | |
3246 | ||
3247 | ret = g_new(BlockDirtyBitmapSha256, 1); | |
3248 | ret->sha256 = sha256; | |
3249 | ||
3250 | return ret; | |
3251 | } | |
3252 | ||
072ebe6b | 3253 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
9063f814 RH |
3254 | { |
3255 | const char *id = qdict_get_str(qdict, "id"); | |
7e7d56d9 | 3256 | BlockBackend *blk; |
9063f814 | 3257 | BlockDriverState *bs; |
8ad4202b | 3258 | AioContext *aio_context; |
3718d8ab | 3259 | Error *local_err = NULL; |
9063f814 | 3260 | |
2073d410 KW |
3261 | bs = bdrv_find_node(id); |
3262 | if (bs) { | |
79b7a77e | 3263 | qmp_blockdev_del(id, &local_err); |
2073d410 KW |
3264 | if (local_err) { |
3265 | error_report_err(local_err); | |
3266 | } | |
3267 | return; | |
3268 | } | |
3269 | ||
7e7d56d9 MA |
3270 | blk = blk_by_name(id); |
3271 | if (!blk) { | |
b1422f20 | 3272 | error_report("Device '%s' not found", id); |
072ebe6b | 3273 | return; |
9063f814 | 3274 | } |
8ad4202b | 3275 | |
26f8b3a8 | 3276 | if (!blk_legacy_dinfo(blk)) { |
48f364dd MA |
3277 | error_report("Deleting device added with blockdev-add" |
3278 | " is not supported"); | |
072ebe6b | 3279 | return; |
48f364dd MA |
3280 | } |
3281 | ||
5433c24f | 3282 | aio_context = blk_get_aio_context(blk); |
8ad4202b SH |
3283 | aio_context_acquire(aio_context); |
3284 | ||
5433c24f HR |
3285 | bs = blk_bs(blk); |
3286 | if (bs) { | |
3287 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { | |
3288 | error_report_err(local_err); | |
3289 | aio_context_release(aio_context); | |
3290 | return; | |
3291 | } | |
9063f814 | 3292 | |
938abd43 | 3293 | blk_remove_bs(blk); |
5433c24f | 3294 | } |
9063f814 | 3295 | |
7c735873 | 3296 | /* Make the BlockBackend and the attached BlockDriverState anonymous */ |
efaa7c4e HR |
3297 | monitor_remove_blk(blk); |
3298 | ||
7c735873 HR |
3299 | /* If this BlockBackend has a device attached to it, its refcount will be |
3300 | * decremented when the device is removed; otherwise we have to do so here. | |
d22b2f41 | 3301 | */ |
a7f53e26 | 3302 | if (blk_get_attached_dev(blk)) { |
293c51a6 | 3303 | /* Further I/O must not pause the guest */ |
373340b2 HR |
3304 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
3305 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 3306 | } else { |
b9fe8a7a | 3307 | blk_unref(blk); |
9063f814 RH |
3308 | } |
3309 | ||
8ad4202b | 3310 | aio_context_release(aio_context); |
9063f814 | 3311 | } |
6d4a2b3a | 3312 | |
3b1dbd11 BC |
3313 | void qmp_block_resize(bool has_device, const char *device, |
3314 | bool has_node_name, const char *node_name, | |
3315 | int64_t size, Error **errp) | |
6d4a2b3a | 3316 | { |
3b1dbd11 | 3317 | Error *local_err = NULL; |
7dad9ee6 | 3318 | BlockBackend *blk = NULL; |
6d4a2b3a | 3319 | BlockDriverState *bs; |
927e0e76 | 3320 | AioContext *aio_context; |
8732901e | 3321 | int ret; |
6d4a2b3a | 3322 | |
3b1dbd11 BC |
3323 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
3324 | has_node_name ? node_name : NULL, | |
3325 | &local_err); | |
84d18f06 | 3326 | if (local_err) { |
3b1dbd11 BC |
3327 | error_propagate(errp, local_err); |
3328 | return; | |
3329 | } | |
3330 | ||
927e0e76 SH |
3331 | aio_context = bdrv_get_aio_context(bs); |
3332 | aio_context_acquire(aio_context); | |
3333 | ||
6d4a2b3a | 3334 | if (size < 0) { |
c6bd8c70 | 3335 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 3336 | goto out; |
6d4a2b3a CH |
3337 | } |
3338 | ||
9c75e168 | 3339 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
c6bd8c70 | 3340 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
927e0e76 | 3341 | goto out; |
9c75e168 JC |
3342 | } |
3343 | ||
d861ab3a | 3344 | blk = blk_new(bdrv_get_aio_context(bs), BLK_PERM_RESIZE, BLK_PERM_ALL); |
d7086422 KW |
3345 | ret = blk_insert_bs(blk, bs, errp); |
3346 | if (ret < 0) { | |
3347 | goto out; | |
3348 | } | |
7dad9ee6 | 3349 | |
698bdfa0 | 3350 | bdrv_drained_begin(bs); |
c80d8b06 | 3351 | ret = blk_truncate(blk, size, false, PREALLOC_MODE_OFF, errp); |
698bdfa0 | 3352 | bdrv_drained_end(bs); |
927e0e76 SH |
3353 | |
3354 | out: | |
7dad9ee6 | 3355 | blk_unref(blk); |
927e0e76 | 3356 | aio_context_release(aio_context); |
6d4a2b3a | 3357 | } |
12bd451f | 3358 | |
2323322e | 3359 | void qmp_block_stream(bool has_job_id, const char *job_id, const char *device, |
13d8cc51 | 3360 | bool has_base, const char *base, |
312fe09c | 3361 | bool has_base_node, const char *base_node, |
13d8cc51 JC |
3362 | bool has_backing_file, const char *backing_file, |
3363 | bool has_speed, int64_t speed, | |
1d809098 | 3364 | bool has_on_error, BlockdevOnError on_error, |
241ca1ab JS |
3365 | bool has_auto_finalize, bool auto_finalize, |
3366 | bool has_auto_dismiss, bool auto_dismiss, | |
1d809098 | 3367 | Error **errp) |
12bd451f | 3368 | { |
554b6147 | 3369 | BlockDriverState *bs, *iter; |
c8c3080f | 3370 | BlockDriverState *base_bs = NULL; |
f3e69beb | 3371 | AioContext *aio_context; |
fd7f8c65 | 3372 | Error *local_err = NULL; |
13d8cc51 | 3373 | const char *base_name = NULL; |
cf6320df | 3374 | int job_flags = JOB_DEFAULT; |
12bd451f | 3375 | |
1d809098 PB |
3376 | if (!has_on_error) { |
3377 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
3378 | } | |
3379 | ||
554b6147 | 3380 | bs = bdrv_lookup_bs(device, device, errp); |
b6c1bae5 | 3381 | if (!bs) { |
12bd451f SH |
3382 | return; |
3383 | } | |
3384 | ||
b6c1bae5 | 3385 | aio_context = bdrv_get_aio_context(bs); |
f3e69beb SH |
3386 | aio_context_acquire(aio_context); |
3387 | ||
312fe09c AG |
3388 | if (has_base && has_base_node) { |
3389 | error_setg(errp, "'base' and 'base-node' cannot be specified " | |
3390 | "at the same time"); | |
3391 | goto out; | |
3392 | } | |
3393 | ||
13d8cc51 | 3394 | if (has_base) { |
c8c3080f MT |
3395 | base_bs = bdrv_find_backing_image(bs, base); |
3396 | if (base_bs == NULL) { | |
c6bd8c70 | 3397 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
f3e69beb | 3398 | goto out; |
c8c3080f | 3399 | } |
f3e69beb | 3400 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
13d8cc51 | 3401 | base_name = base; |
12bd451f SH |
3402 | } |
3403 | ||
312fe09c AG |
3404 | if (has_base_node) { |
3405 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); | |
3406 | if (!base_bs) { | |
3407 | goto out; | |
3408 | } | |
3409 | if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) { | |
3410 | error_setg(errp, "Node '%s' is not a backing image of '%s'", | |
3411 | base_node, device); | |
3412 | goto out; | |
3413 | } | |
3414 | assert(bdrv_get_aio_context(base_bs) == aio_context); | |
f30c66ba | 3415 | bdrv_refresh_filename(base_bs); |
312fe09c AG |
3416 | base_name = base_bs->filename; |
3417 | } | |
3418 | ||
554b6147 AG |
3419 | /* Check for op blockers in the whole chain between bs and base */ |
3420 | for (iter = bs; iter && iter != base_bs; iter = backing_bs(iter)) { | |
3421 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) { | |
3422 | goto out; | |
3423 | } | |
3424 | } | |
3425 | ||
13d8cc51 JC |
3426 | /* if we are streaming the entire chain, the result will have no backing |
3427 | * file, and specifying one is therefore an error */ | |
3428 | if (base_bs == NULL && has_backing_file) { | |
3429 | error_setg(errp, "backing file specified, but streaming the " | |
3430 | "entire chain"); | |
f3e69beb | 3431 | goto out; |
13d8cc51 JC |
3432 | } |
3433 | ||
3434 | /* backing_file string overrides base bs filename */ | |
3435 | base_name = has_backing_file ? backing_file : base_name; | |
3436 | ||
241ca1ab JS |
3437 | if (has_auto_finalize && !auto_finalize) { |
3438 | job_flags |= JOB_MANUAL_FINALIZE; | |
3439 | } | |
3440 | if (has_auto_dismiss && !auto_dismiss) { | |
3441 | job_flags |= JOB_MANUAL_DISMISS; | |
3442 | } | |
3443 | ||
2323322e | 3444 | stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name, |
cf6320df | 3445 | job_flags, has_speed ? speed : 0, on_error, &local_err); |
84d18f06 | 3446 | if (local_err) { |
fd7f8c65 | 3447 | error_propagate(errp, local_err); |
f3e69beb | 3448 | goto out; |
12bd451f SH |
3449 | } |
3450 | ||
b23c580c | 3451 | trace_qmp_block_stream(bs); |
f3e69beb SH |
3452 | |
3453 | out: | |
3454 | aio_context_release(aio_context); | |
12bd451f | 3455 | } |
2d47c6e9 | 3456 | |
fd62c609 | 3457 | void qmp_block_commit(bool has_job_id, const char *job_id, const char *device, |
3c605f40 | 3458 | bool has_base_node, const char *base_node, |
7676e2c5 | 3459 | bool has_base, const char *base, |
3c605f40 | 3460 | bool has_top_node, const char *top_node, |
7676e2c5 | 3461 | bool has_top, const char *top, |
54e26900 | 3462 | bool has_backing_file, const char *backing_file, |
ed61fc10 | 3463 | bool has_speed, int64_t speed, |
8faad1c7 | 3464 | bool has_on_error, BlockdevOnError on_error, |
0db832f4 | 3465 | bool has_filter_node_name, const char *filter_node_name, |
96fbf534 JS |
3466 | bool has_auto_finalize, bool auto_finalize, |
3467 | bool has_auto_dismiss, bool auto_dismiss, | |
ed61fc10 JC |
3468 | Error **errp) |
3469 | { | |
3470 | BlockDriverState *bs; | |
058223a6 | 3471 | BlockDriverState *iter; |
ed61fc10 | 3472 | BlockDriverState *base_bs, *top_bs; |
9e85cd5c | 3473 | AioContext *aio_context; |
ed61fc10 | 3474 | Error *local_err = NULL; |
5360782d | 3475 | int job_flags = JOB_DEFAULT; |
ed61fc10 | 3476 | |
54504663 HR |
3477 | if (!has_speed) { |
3478 | speed = 0; | |
3479 | } | |
8faad1c7 KW |
3480 | if (!has_on_error) { |
3481 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
3482 | } | |
0db832f4 KW |
3483 | if (!has_filter_node_name) { |
3484 | filter_node_name = NULL; | |
3485 | } | |
96fbf534 JS |
3486 | if (has_auto_finalize && !auto_finalize) { |
3487 | job_flags |= JOB_MANUAL_FINALIZE; | |
3488 | } | |
3489 | if (has_auto_dismiss && !auto_dismiss) { | |
3490 | job_flags |= JOB_MANUAL_DISMISS; | |
3491 | } | |
54504663 | 3492 | |
7676e2c5 JC |
3493 | /* Important Note: |
3494 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
3495 | * live commit feature versions; for this to work, we must make sure to | |
3496 | * perform the device lookup before any generic errors that may occur in a | |
3497 | * scenario in which all optional arguments are omitted. */ | |
1d13b167 KW |
3498 | bs = qmp_get_root_bs(device, &local_err); |
3499 | if (!bs) { | |
3500 | bs = bdrv_lookup_bs(device, device, NULL); | |
3501 | if (!bs) { | |
3502 | error_free(local_err); | |
3503 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
3504 | "Device '%s' not found", device); | |
3505 | } else { | |
3506 | error_propagate(errp, local_err); | |
3507 | } | |
ed61fc10 | 3508 | return; |
628ff683 FZ |
3509 | } |
3510 | ||
1d13b167 | 3511 | aio_context = bdrv_get_aio_context(bs); |
9e85cd5c SH |
3512 | aio_context_acquire(aio_context); |
3513 | ||
bb00021d | 3514 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
9e85cd5c | 3515 | goto out; |
ed61fc10 | 3516 | } |
ed61fc10 JC |
3517 | |
3518 | /* default top_bs is the active layer */ | |
3519 | top_bs = bs; | |
3520 | ||
3c605f40 KW |
3521 | if (has_top_node && has_top) { |
3522 | error_setg(errp, "'top-node' and 'top' are mutually exclusive"); | |
3523 | goto out; | |
3524 | } else if (has_top_node) { | |
3525 | top_bs = bdrv_lookup_bs(NULL, top_node, errp); | |
3526 | if (top_bs == NULL) { | |
3527 | goto out; | |
3528 | } | |
3529 | if (!bdrv_chain_contains(bs, top_bs)) { | |
3530 | error_setg(errp, "'%s' is not in this backing file chain", | |
3531 | top_node); | |
3532 | goto out; | |
3533 | } | |
3534 | } else if (has_top && top) { | |
f30c66ba HR |
3535 | /* This strcmp() is just a shortcut, there is no need to |
3536 | * refresh @bs's filename. If it mismatches, | |
3537 | * bdrv_find_backing_image() will do the refresh and may still | |
3538 | * return @bs. */ | |
ed61fc10 JC |
3539 | if (strcmp(bs->filename, top) != 0) { |
3540 | top_bs = bdrv_find_backing_image(bs, top); | |
3541 | } | |
3542 | } | |
3543 | ||
3544 | if (top_bs == NULL) { | |
3545 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
9e85cd5c | 3546 | goto out; |
ed61fc10 JC |
3547 | } |
3548 | ||
9e85cd5c SH |
3549 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
3550 | ||
3c605f40 KW |
3551 | if (has_base_node && has_base) { |
3552 | error_setg(errp, "'base-node' and 'base' are mutually exclusive"); | |
3553 | goto out; | |
3554 | } else if (has_base_node) { | |
3555 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); | |
3556 | if (base_bs == NULL) { | |
3557 | goto out; | |
3558 | } | |
3559 | if (!bdrv_chain_contains(top_bs, base_bs)) { | |
3560 | error_setg(errp, "'%s' is not in this backing file chain", | |
3561 | base_node); | |
3562 | goto out; | |
3563 | } | |
3564 | } else if (has_base && base) { | |
d5208c45 JC |
3565 | base_bs = bdrv_find_backing_image(top_bs, base); |
3566 | } else { | |
3567 | base_bs = bdrv_find_base(top_bs); | |
3568 | } | |
3569 | ||
3570 | if (base_bs == NULL) { | |
c6bd8c70 | 3571 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
9e85cd5c | 3572 | goto out; |
d5208c45 JC |
3573 | } |
3574 | ||
9e85cd5c SH |
3575 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
3576 | ||
058223a6 AG |
3577 | for (iter = top_bs; iter != backing_bs(base_bs); iter = backing_bs(iter)) { |
3578 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { | |
3579 | goto out; | |
3580 | } | |
bb00021d FZ |
3581 | } |
3582 | ||
7676e2c5 JC |
3583 | /* Do not allow attempts to commit an image into itself */ |
3584 | if (top_bs == base_bs) { | |
3585 | error_setg(errp, "cannot commit an image into itself"); | |
9e85cd5c | 3586 | goto out; |
7676e2c5 JC |
3587 | } |
3588 | ||
20a63d2c | 3589 | if (top_bs == bs) { |
54e26900 JC |
3590 | if (has_backing_file) { |
3591 | error_setg(errp, "'backing-file' specified," | |
3592 | " but 'top' is the active layer"); | |
9e85cd5c | 3593 | goto out; |
54e26900 | 3594 | } |
47970dfb | 3595 | commit_active_start(has_job_id ? job_id : NULL, bs, base_bs, |
5360782d | 3596 | job_flags, speed, on_error, |
78bbd910 | 3597 | filter_node_name, NULL, NULL, false, &local_err); |
20a63d2c | 3598 | } else { |
058223a6 AG |
3599 | BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs); |
3600 | if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { | |
3601 | goto out; | |
3602 | } | |
5360782d JS |
3603 | commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, job_flags, |
3604 | speed, on_error, has_backing_file ? backing_file : NULL, | |
0db832f4 | 3605 | filter_node_name, &local_err); |
20a63d2c | 3606 | } |
ed61fc10 JC |
3607 | if (local_err != NULL) { |
3608 | error_propagate(errp, local_err); | |
9e85cd5c | 3609 | goto out; |
ed61fc10 | 3610 | } |
9e85cd5c SH |
3611 | |
3612 | out: | |
3613 | aio_context_release(aio_context); | |
ed61fc10 JC |
3614 | } |
3615 | ||
7b0b870b JS |
3616 | /* Common QMP interface for drive-backup and blockdev-backup */ |
3617 | static BlockJob *do_backup_common(BackupCommon *backup, | |
3618 | BlockDriverState *bs, | |
3619 | BlockDriverState *target_bs, | |
3620 | AioContext *aio_context, | |
3621 | JobTxn *txn, Error **errp) | |
99a9addf | 3622 | { |
111049a4 | 3623 | BlockJob *job = NULL; |
d58d8453 | 3624 | BdrvDirtyBitmap *bmap = NULL; |
7b0b870b | 3625 | int job_flags = JOB_DEFAULT; |
99a9addf | 3626 | |
81206a89 PB |
3627 | if (!backup->has_speed) { |
3628 | backup->speed = 0; | |
99a9addf | 3629 | } |
81206a89 PB |
3630 | if (!backup->has_on_source_error) { |
3631 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
99a9addf | 3632 | } |
81206a89 PB |
3633 | if (!backup->has_on_target_error) { |
3634 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
99a9addf | 3635 | } |
81206a89 PB |
3636 | if (!backup->has_job_id) { |
3637 | backup->job_id = NULL; | |
99a9addf | 3638 | } |
b40dacdc JS |
3639 | if (!backup->has_auto_finalize) { |
3640 | backup->auto_finalize = true; | |
3641 | } | |
3642 | if (!backup->has_auto_dismiss) { | |
3643 | backup->auto_dismiss = true; | |
3644 | } | |
13b9414b PB |
3645 | if (!backup->has_compress) { |
3646 | backup->compress = false; | |
3647 | } | |
99a9addf | 3648 | |
a6c9365a JS |
3649 | if ((backup->sync == MIRROR_SYNC_MODE_BITMAP) || |
3650 | (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL)) { | |
3651 | /* done before desugaring 'incremental' to print the right message */ | |
3652 | if (!backup->has_bitmap) { | |
3653 | error_setg(errp, "must provide a valid bitmap name for " | |
3654 | "'%s' sync mode", MirrorSyncMode_str(backup->sync)); | |
3655 | return NULL; | |
3656 | } | |
3657 | } | |
3658 | ||
c8b56501 JS |
3659 | if (backup->sync == MIRROR_SYNC_MODE_INCREMENTAL) { |
3660 | if (backup->has_bitmap_mode && | |
3661 | backup->bitmap_mode != BITMAP_SYNC_MODE_ON_SUCCESS) { | |
3662 | error_setg(errp, "Bitmap sync mode must be '%s' " | |
3663 | "when using sync mode '%s'", | |
3664 | BitmapSyncMode_str(BITMAP_SYNC_MODE_ON_SUCCESS), | |
3665 | MirrorSyncMode_str(backup->sync)); | |
3666 | return NULL; | |
3667 | } | |
3668 | backup->has_bitmap_mode = true; | |
3669 | backup->sync = MIRROR_SYNC_MODE_BITMAP; | |
3670 | backup->bitmap_mode = BITMAP_SYNC_MODE_ON_SUCCESS; | |
3671 | } | |
3672 | ||
7b0b870b JS |
3673 | if (backup->has_bitmap) { |
3674 | bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap); | |
3675 | if (!bmap) { | |
3676 | error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap); | |
3677 | return NULL; | |
3678 | } | |
c8b56501 JS |
3679 | if (!backup->has_bitmap_mode) { |
3680 | error_setg(errp, "Bitmap sync mode must be given " | |
3681 | "when providing a bitmap"); | |
3682 | return NULL; | |
3683 | } | |
b30ffbef | 3684 | if (bdrv_dirty_bitmap_check(bmap, BDRV_BITMAP_ALLOW_RO, errp)) { |
7b0b870b JS |
3685 | return NULL; |
3686 | } | |
1a2b8b40 JS |
3687 | |
3688 | /* This does not produce a useful bitmap artifact: */ | |
3689 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { | |
3690 | error_setg(errp, "sync mode '%s' does not produce meaningful bitmap" | |
3691 | " outputs", MirrorSyncMode_str(backup->sync)); | |
3692 | return NULL; | |
3693 | } | |
3694 | ||
3695 | /* If the bitmap isn't used for input or output, this is useless: */ | |
3696 | if (backup->bitmap_mode == BITMAP_SYNC_MODE_NEVER && | |
3697 | backup->sync != MIRROR_SYNC_MODE_BITMAP) { | |
3698 | error_setg(errp, "Bitmap sync mode '%s' has no meaningful effect" | |
3699 | " when combined with sync mode '%s'", | |
3700 | BitmapSyncMode_str(backup->bitmap_mode), | |
3701 | MirrorSyncMode_str(backup->sync)); | |
3702 | return NULL; | |
3703 | } | |
3704 | } | |
3705 | ||
3706 | if (!backup->has_bitmap && backup->has_bitmap_mode) { | |
3707 | error_setg(errp, "Cannot specify bitmap sync mode without a bitmap"); | |
3708 | return NULL; | |
7b0b870b JS |
3709 | } |
3710 | ||
3711 | if (!backup->auto_finalize) { | |
3712 | job_flags |= JOB_MANUAL_FINALIZE; | |
3713 | } | |
3714 | if (!backup->auto_dismiss) { | |
3715 | job_flags |= JOB_MANUAL_DISMISS; | |
3716 | } | |
3717 | ||
3718 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, | |
c8b56501 JS |
3719 | backup->sync, bmap, backup->bitmap_mode, |
3720 | backup->compress, | |
00e30f05 | 3721 | backup->filter_node_name, |
c8b56501 JS |
3722 | backup->on_source_error, |
3723 | backup->on_target_error, | |
7b0b870b JS |
3724 | job_flags, NULL, NULL, txn, errp); |
3725 | return job; | |
3726 | } | |
3727 | ||
2288ccfa | 3728 | void qmp_drive_backup(DriveBackup *backup, Error **errp) |
78f51fde | 3729 | { |
2288ccfa SL |
3730 | TransactionAction action = { |
3731 | .type = TRANSACTION_ACTION_KIND_DRIVE_BACKUP, | |
3732 | .u.drive_backup.data = backup, | |
3733 | }; | |
3734 | blockdev_do_action(&action, errp); | |
78f51fde JS |
3735 | } |
3736 | ||
facda544 PK |
3737 | BlockDeviceInfoList *qmp_query_named_block_nodes(bool has_flat, |
3738 | bool flat, | |
3739 | Error **errp) | |
c13163fb | 3740 | { |
facda544 PK |
3741 | bool return_flat = has_flat && flat; |
3742 | ||
3743 | return bdrv_named_nodes_list(return_flat, errp); | |
c13163fb BC |
3744 | } |
3745 | ||
5d3b4e99 VSO |
3746 | XDbgBlockGraph *qmp_x_debug_query_block_graph(Error **errp) |
3747 | { | |
3748 | return bdrv_get_xdbg_block_graph(errp); | |
3749 | } | |
3750 | ||
5b7bfe51 | 3751 | void qmp_blockdev_backup(BlockdevBackup *backup, Error **errp) |
c29c1dd3 | 3752 | { |
5b7bfe51 SL |
3753 | TransactionAction action = { |
3754 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP, | |
3755 | .u.blockdev_backup.data = backup, | |
3756 | }; | |
3757 | blockdev_do_action(&action, errp); | |
78f51fde JS |
3758 | } |
3759 | ||
4193cdd7 FZ |
3760 | /* Parameter check and block job starting for drive mirroring. |
3761 | * Caller should hold @device and @target's aio context (must be the same). | |
3762 | **/ | |
71aa9867 | 3763 | static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, |
4193cdd7 FZ |
3764 | BlockDriverState *target, |
3765 | bool has_replaces, const char *replaces, | |
3766 | enum MirrorSyncMode sync, | |
274fccee | 3767 | BlockMirrorBackingMode backing_mode, |
cdf3bc93 | 3768 | bool zero_target, |
4193cdd7 FZ |
3769 | bool has_speed, int64_t speed, |
3770 | bool has_granularity, uint32_t granularity, | |
3771 | bool has_buf_size, int64_t buf_size, | |
3772 | bool has_on_source_error, | |
3773 | BlockdevOnError on_source_error, | |
3774 | bool has_on_target_error, | |
3775 | BlockdevOnError on_target_error, | |
3776 | bool has_unmap, bool unmap, | |
6cdbceb1 KW |
3777 | bool has_filter_node_name, |
3778 | const char *filter_node_name, | |
481debaa | 3779 | bool has_copy_mode, MirrorCopyMode copy_mode, |
a6b58ade JS |
3780 | bool has_auto_finalize, bool auto_finalize, |
3781 | bool has_auto_dismiss, bool auto_dismiss, | |
4193cdd7 | 3782 | Error **errp) |
d9b902db | 3783 | { |
a1999b33 | 3784 | int job_flags = JOB_DEFAULT; |
d9b902db PB |
3785 | |
3786 | if (!has_speed) { | |
3787 | speed = 0; | |
3788 | } | |
b952b558 PB |
3789 | if (!has_on_source_error) { |
3790 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3791 | } | |
3792 | if (!has_on_target_error) { | |
3793 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3794 | } | |
eee13dfe PB |
3795 | if (!has_granularity) { |
3796 | granularity = 0; | |
3797 | } | |
08e4ed6c | 3798 | if (!has_buf_size) { |
48ac0a4d | 3799 | buf_size = 0; |
08e4ed6c | 3800 | } |
0fc9f8ea FZ |
3801 | if (!has_unmap) { |
3802 | unmap = true; | |
3803 | } | |
6cdbceb1 KW |
3804 | if (!has_filter_node_name) { |
3805 | filter_node_name = NULL; | |
3806 | } | |
481debaa HR |
3807 | if (!has_copy_mode) { |
3808 | copy_mode = MIRROR_COPY_MODE_BACKGROUND; | |
3809 | } | |
a6b58ade JS |
3810 | if (has_auto_finalize && !auto_finalize) { |
3811 | job_flags |= JOB_MANUAL_FINALIZE; | |
3812 | } | |
3813 | if (has_auto_dismiss && !auto_dismiss) { | |
3814 | job_flags |= JOB_MANUAL_DISMISS; | |
3815 | } | |
08e4ed6c | 3816 | |
eee13dfe | 3817 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
c6bd8c70 MA |
3818 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3819 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
3820 | return; |
3821 | } | |
3822 | if (granularity & (granularity - 1)) { | |
c6bd8c70 MA |
3823 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3824 | "power of 2"); | |
eee13dfe PB |
3825 | return; |
3826 | } | |
d9b902db | 3827 | |
4193cdd7 FZ |
3828 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
3829 | return; | |
3830 | } | |
e40e5027 FZ |
3831 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
3832 | return; | |
3833 | } | |
4193cdd7 FZ |
3834 | |
3835 | if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) { | |
3836 | sync = MIRROR_SYNC_MODE_FULL; | |
3837 | } | |
3838 | ||
74ce9e46 HR |
3839 | if (has_replaces) { |
3840 | BlockDriverState *to_replace_bs; | |
3841 | AioContext *replace_aio_context; | |
3842 | int64_t bs_size, replace_size; | |
3843 | ||
3844 | bs_size = bdrv_getlength(bs); | |
3845 | if (bs_size < 0) { | |
3846 | error_setg_errno(errp, -bs_size, "Failed to query device's size"); | |
3847 | return; | |
3848 | } | |
3849 | ||
3850 | to_replace_bs = check_to_replace_node(bs, replaces, errp); | |
3851 | if (!to_replace_bs) { | |
3852 | return; | |
3853 | } | |
3854 | ||
3855 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); | |
3856 | aio_context_acquire(replace_aio_context); | |
3857 | replace_size = bdrv_getlength(to_replace_bs); | |
3858 | aio_context_release(replace_aio_context); | |
3859 | ||
3860 | if (replace_size < 0) { | |
3861 | error_setg_errno(errp, -replace_size, | |
3862 | "Failed to query the replacement node's size"); | |
3863 | return; | |
3864 | } | |
3865 | if (bs_size != replace_size) { | |
3866 | error_setg(errp, "cannot replace image with a mirror image of " | |
3867 | "different size"); | |
3868 | return; | |
3869 | } | |
3870 | } | |
3871 | ||
4193cdd7 FZ |
3872 | /* pass the node name to replace to mirror start since it's loose coupling |
3873 | * and will allow to check whether the node still exist at mirror completion | |
3874 | */ | |
71aa9867 | 3875 | mirror_start(job_id, bs, target, |
a1999b33 | 3876 | has_replaces ? replaces : NULL, job_flags, |
cdf3bc93 | 3877 | speed, granularity, buf_size, sync, backing_mode, zero_target, |
6cdbceb1 | 3878 | on_source_error, on_target_error, unmap, filter_node_name, |
481debaa | 3879 | copy_mode, errp); |
4193cdd7 FZ |
3880 | } |
3881 | ||
faecd40a | 3882 | void qmp_drive_mirror(DriveMirror *arg, Error **errp) |
4193cdd7 FZ |
3883 | { |
3884 | BlockDriverState *bs; | |
4193cdd7 FZ |
3885 | BlockDriverState *source, *target_bs; |
3886 | AioContext *aio_context; | |
3ea67e08 | 3887 | AioContext *old_context; |
274fccee | 3888 | BlockMirrorBackingMode backing_mode; |
4193cdd7 FZ |
3889 | Error *local_err = NULL; |
3890 | QDict *options = NULL; | |
3891 | int flags; | |
3892 | int64_t size; | |
faecd40a | 3893 | const char *format = arg->format; |
cdf3bc93 | 3894 | bool zero_target; |
8ed7d42f | 3895 | int ret; |
4193cdd7 | 3896 | |
0524e93a KW |
3897 | bs = qmp_get_root_bs(arg->device, errp); |
3898 | if (!bs) { | |
d9b902db PB |
3899 | return; |
3900 | } | |
3901 | ||
cb2af917 PB |
3902 | /* Early check to avoid creating target */ |
3903 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { | |
3904 | return; | |
3905 | } | |
3906 | ||
0524e93a | 3907 | aio_context = bdrv_get_aio_context(bs); |
5a7e7a0b SH |
3908 | aio_context_acquire(aio_context); |
3909 | ||
faecd40a EB |
3910 | if (!arg->has_mode) { |
3911 | arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
4193cdd7 | 3912 | } |
d9b902db | 3913 | |
faecd40a EB |
3914 | if (!arg->has_format) { |
3915 | format = (arg->mode == NEW_IMAGE_MODE_EXISTING | |
3916 | ? NULL : bs->drv->format_name); | |
d9b902db | 3917 | } |
d9b902db | 3918 | |
61de4c68 | 3919 | flags = bs->open_flags | BDRV_O_RDWR; |
760e0063 | 3920 | source = backing_bs(bs); |
faecd40a EB |
3921 | if (!source && arg->sync == MIRROR_SYNC_MODE_TOP) { |
3922 | arg->sync = MIRROR_SYNC_MODE_FULL; | |
d9b902db | 3923 | } |
faecd40a | 3924 | if (arg->sync == MIRROR_SYNC_MODE_NONE) { |
117e0c82 HR |
3925 | source = bs; |
3926 | } | |
d9b902db | 3927 | |
ac3c5d83 SH |
3928 | size = bdrv_getlength(bs); |
3929 | if (size < 0) { | |
3930 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
5a7e7a0b | 3931 | goto out; |
ac3c5d83 SH |
3932 | } |
3933 | ||
faecd40a | 3934 | if (arg->has_replaces) { |
faecd40a | 3935 | if (!arg->has_node_name) { |
09158f00 BC |
3936 | error_setg(errp, "a node-name must be provided when replacing a" |
3937 | " named node of the graph"); | |
5a7e7a0b | 3938 | goto out; |
09158f00 | 3939 | } |
09158f00 BC |
3940 | } |
3941 | ||
faecd40a | 3942 | if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) { |
274fccee HR |
3943 | backing_mode = MIRROR_SOURCE_BACKING_CHAIN; |
3944 | } else { | |
3945 | backing_mode = MIRROR_OPEN_BACKING_CHAIN; | |
3946 | } | |
3947 | ||
2a32c6e8 JS |
3948 | /* Don't open backing image in create() */ |
3949 | flags |= BDRV_O_NO_BACKING; | |
3950 | ||
faecd40a EB |
3951 | if ((arg->sync == MIRROR_SYNC_MODE_FULL || !source) |
3952 | && arg->mode != NEW_IMAGE_MODE_EXISTING) | |
14526864 | 3953 | { |
d9b902db | 3954 | /* create new image w/o backing file */ |
e6641719 | 3955 | assert(format); |
faecd40a | 3956 | bdrv_img_create(arg->target, format, |
9217283d | 3957 | NULL, NULL, NULL, size, flags, false, &local_err); |
d9b902db | 3958 | } else { |
faecd40a | 3959 | switch (arg->mode) { |
d9b902db | 3960 | case NEW_IMAGE_MODE_EXISTING: |
d9b902db PB |
3961 | break; |
3962 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
3963 | /* create new image with backing file */ | |
f30c66ba | 3964 | bdrv_refresh_filename(source); |
faecd40a | 3965 | bdrv_img_create(arg->target, format, |
cf8f2426 LC |
3966 | source->filename, |
3967 | source->drv->format_name, | |
9217283d | 3968 | NULL, size, flags, false, &local_err); |
d9b902db PB |
3969 | break; |
3970 | default: | |
3971 | abort(); | |
3972 | } | |
3973 | } | |
3974 | ||
84d18f06 | 3975 | if (local_err) { |
cf8f2426 | 3976 | error_propagate(errp, local_err); |
5a7e7a0b | 3977 | goto out; |
d9b902db PB |
3978 | } |
3979 | ||
e6641719 | 3980 | options = qdict_new(); |
faecd40a | 3981 | if (arg->has_node_name) { |
46f5ac20 | 3982 | qdict_put_str(options, "node-name", arg->node_name); |
4c828dc6 | 3983 | } |
e6641719 | 3984 | if (format) { |
46f5ac20 | 3985 | qdict_put_str(options, "driver", format); |
e6641719 | 3986 | } |
4c828dc6 | 3987 | |
b812f671 PB |
3988 | /* Mirroring takes care of copy-on-write using the source's backing |
3989 | * file. | |
3990 | */ | |
2a32c6e8 | 3991 | target_bs = bdrv_open(arg->target, NULL, options, flags, errp); |
5b363937 | 3992 | if (!target_bs) { |
5a7e7a0b | 3993 | goto out; |
d9b902db PB |
3994 | } |
3995 | ||
cdf3bc93 HR |
3996 | zero_target = (arg->sync == MIRROR_SYNC_MODE_FULL && |
3997 | (arg->mode == NEW_IMAGE_MODE_EXISTING || | |
3998 | !bdrv_has_zero_init(target_bs))); | |
3999 | ||
3ea67e08 SL |
4000 | |
4001 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ | |
4002 | old_context = bdrv_get_aio_context(target_bs); | |
4003 | aio_context_release(aio_context); | |
4004 | aio_context_acquire(old_context); | |
4005 | ||
8ed7d42f KW |
4006 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
4007 | if (ret < 0) { | |
4008 | bdrv_unref(target_bs); | |
3ea67e08 SL |
4009 | aio_context_release(old_context); |
4010 | return; | |
8ed7d42f | 4011 | } |
5a7e7a0b | 4012 | |
3ea67e08 SL |
4013 | aio_context_release(old_context); |
4014 | aio_context_acquire(aio_context); | |
4015 | ||
faecd40a EB |
4016 | blockdev_mirror_common(arg->has_job_id ? arg->job_id : NULL, bs, target_bs, |
4017 | arg->has_replaces, arg->replaces, arg->sync, | |
cdf3bc93 HR |
4018 | backing_mode, zero_target, |
4019 | arg->has_speed, arg->speed, | |
faecd40a EB |
4020 | arg->has_granularity, arg->granularity, |
4021 | arg->has_buf_size, arg->buf_size, | |
4022 | arg->has_on_source_error, arg->on_source_error, | |
4023 | arg->has_on_target_error, arg->on_target_error, | |
4024 | arg->has_unmap, arg->unmap, | |
6cdbceb1 | 4025 | false, NULL, |
481debaa | 4026 | arg->has_copy_mode, arg->copy_mode, |
a6b58ade JS |
4027 | arg->has_auto_finalize, arg->auto_finalize, |
4028 | arg->has_auto_dismiss, arg->auto_dismiss, | |
4193cdd7 | 4029 | &local_err); |
e253f4b8 | 4030 | bdrv_unref(target_bs); |
621ff94d | 4031 | error_propagate(errp, local_err); |
5a7e7a0b SH |
4032 | out: |
4033 | aio_context_release(aio_context); | |
d9b902db PB |
4034 | } |
4035 | ||
71aa9867 AG |
4036 | void qmp_blockdev_mirror(bool has_job_id, const char *job_id, |
4037 | const char *device, const char *target, | |
df92562e FZ |
4038 | bool has_replaces, const char *replaces, |
4039 | MirrorSyncMode sync, | |
4040 | bool has_speed, int64_t speed, | |
4041 | bool has_granularity, uint32_t granularity, | |
4042 | bool has_buf_size, int64_t buf_size, | |
4043 | bool has_on_source_error, | |
4044 | BlockdevOnError on_source_error, | |
4045 | bool has_on_target_error, | |
4046 | BlockdevOnError on_target_error, | |
6cdbceb1 KW |
4047 | bool has_filter_node_name, |
4048 | const char *filter_node_name, | |
481debaa | 4049 | bool has_copy_mode, MirrorCopyMode copy_mode, |
a6b58ade JS |
4050 | bool has_auto_finalize, bool auto_finalize, |
4051 | bool has_auto_dismiss, bool auto_dismiss, | |
df92562e FZ |
4052 | Error **errp) |
4053 | { | |
4054 | BlockDriverState *bs; | |
df92562e FZ |
4055 | BlockDriverState *target_bs; |
4056 | AioContext *aio_context; | |
3ea67e08 | 4057 | AioContext *old_context; |
274fccee | 4058 | BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; |
df92562e | 4059 | Error *local_err = NULL; |
cdf3bc93 | 4060 | bool zero_target; |
8ed7d42f | 4061 | int ret; |
df92562e | 4062 | |
07eec652 | 4063 | bs = qmp_get_root_bs(device, errp); |
df92562e | 4064 | if (!bs) { |
df92562e FZ |
4065 | return; |
4066 | } | |
4067 | ||
4068 | target_bs = bdrv_lookup_bs(target, target, errp); | |
4069 | if (!target_bs) { | |
4070 | return; | |
4071 | } | |
4072 | ||
cdf3bc93 HR |
4073 | zero_target = (sync == MIRROR_SYNC_MODE_FULL); |
4074 | ||
3ea67e08 SL |
4075 | /* Honor bdrv_try_set_aio_context() context acquisition requirements. */ |
4076 | old_context = bdrv_get_aio_context(target_bs); | |
df92562e | 4077 | aio_context = bdrv_get_aio_context(bs); |
3ea67e08 | 4078 | aio_context_acquire(old_context); |
df92562e | 4079 | |
8ed7d42f | 4080 | ret = bdrv_try_set_aio_context(target_bs, aio_context, errp); |
3ea67e08 SL |
4081 | |
4082 | aio_context_release(old_context); | |
4083 | aio_context_acquire(aio_context); | |
4084 | ||
8ed7d42f KW |
4085 | if (ret < 0) { |
4086 | goto out; | |
4087 | } | |
df92562e | 4088 | |
71aa9867 | 4089 | blockdev_mirror_common(has_job_id ? job_id : NULL, bs, target_bs, |
274fccee | 4090 | has_replaces, replaces, sync, backing_mode, |
cdf3bc93 | 4091 | zero_target, has_speed, speed, |
df92562e FZ |
4092 | has_granularity, granularity, |
4093 | has_buf_size, buf_size, | |
4094 | has_on_source_error, on_source_error, | |
4095 | has_on_target_error, on_target_error, | |
4096 | true, true, | |
6cdbceb1 | 4097 | has_filter_node_name, filter_node_name, |
481debaa | 4098 | has_copy_mode, copy_mode, |
a6b58ade JS |
4099 | has_auto_finalize, auto_finalize, |
4100 | has_auto_dismiss, auto_dismiss, | |
df92562e | 4101 | &local_err); |
621ff94d | 4102 | error_propagate(errp, local_err); |
8ed7d42f | 4103 | out: |
df92562e FZ |
4104 | aio_context_release(aio_context); |
4105 | } | |
4106 | ||
3ddf3efe AG |
4107 | /* Get a block job using its ID and acquire its AioContext */ |
4108 | static BlockJob *find_block_job(const char *id, AioContext **aio_context, | |
24d6bffe | 4109 | Error **errp) |
2d47c6e9 | 4110 | { |
3ddf3efe | 4111 | BlockJob *job; |
2d47c6e9 | 4112 | |
3ddf3efe | 4113 | assert(id != NULL); |
5433c24f | 4114 | |
3ddf3efe | 4115 | *aio_context = NULL; |
3d948cdf | 4116 | |
3ddf3efe | 4117 | job = block_job_get(id); |
5433c24f | 4118 | |
3ddf3efe AG |
4119 | if (!job) { |
4120 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, | |
4121 | "Block job '%s' not found", id); | |
4122 | return NULL; | |
2d47c6e9 | 4123 | } |
3d948cdf | 4124 | |
3ddf3efe AG |
4125 | *aio_context = blk_get_aio_context(job->blk); |
4126 | aio_context_acquire(*aio_context); | |
3d948cdf | 4127 | |
3ddf3efe | 4128 | return job; |
2d47c6e9 SH |
4129 | } |
4130 | ||
882ec7ce | 4131 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 | 4132 | { |
3d948cdf | 4133 | AioContext *aio_context; |
24d6bffe | 4134 | BlockJob *job = find_block_job(device, &aio_context, errp); |
2d47c6e9 SH |
4135 | |
4136 | if (!job) { | |
2d47c6e9 SH |
4137 | return; |
4138 | } | |
4139 | ||
882ec7ce | 4140 | block_job_set_speed(job, speed, errp); |
3d948cdf | 4141 | aio_context_release(aio_context); |
2d47c6e9 | 4142 | } |
370521a1 | 4143 | |
6e37fb81 PB |
4144 | void qmp_block_job_cancel(const char *device, |
4145 | bool has_force, bool force, Error **errp) | |
370521a1 | 4146 | { |
3d948cdf | 4147 | AioContext *aio_context; |
24d6bffe | 4148 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 4149 | |
370521a1 | 4150 | if (!job) { |
370521a1 SH |
4151 | return; |
4152 | } | |
3d948cdf SH |
4153 | |
4154 | if (!has_force) { | |
4155 | force = false; | |
4156 | } | |
4157 | ||
b15de828 | 4158 | if (job_user_paused(&job->job) && !force) { |
f231b88d CR |
4159 | error_setg(errp, "The block job for device '%s' is currently paused", |
4160 | device); | |
3d948cdf | 4161 | goto out; |
8acc72a4 | 4162 | } |
370521a1 SH |
4163 | |
4164 | trace_qmp_block_job_cancel(job); | |
3d70ff53 | 4165 | job_user_cancel(&job->job, force, errp); |
3d948cdf SH |
4166 | out: |
4167 | aio_context_release(aio_context); | |
370521a1 | 4168 | } |
fb5458cd | 4169 | |
6e37fb81 PB |
4170 | void qmp_block_job_pause(const char *device, Error **errp) |
4171 | { | |
3d948cdf | 4172 | AioContext *aio_context; |
24d6bffe | 4173 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 4174 | |
0ec4dfb8 | 4175 | if (!job) { |
6e37fb81 PB |
4176 | return; |
4177 | } | |
4178 | ||
4179 | trace_qmp_block_job_pause(job); | |
b15de828 | 4180 | job_user_pause(&job->job, errp); |
3d948cdf | 4181 | aio_context_release(aio_context); |
6e37fb81 PB |
4182 | } |
4183 | ||
4184 | void qmp_block_job_resume(const char *device, Error **errp) | |
4185 | { | |
3d948cdf | 4186 | AioContext *aio_context; |
24d6bffe | 4187 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 4188 | |
0ec4dfb8 | 4189 | if (!job) { |
6e37fb81 PB |
4190 | return; |
4191 | } | |
4192 | ||
4193 | trace_qmp_block_job_resume(job); | |
b15de828 | 4194 | job_user_resume(&job->job, errp); |
3d948cdf | 4195 | aio_context_release(aio_context); |
6e37fb81 PB |
4196 | } |
4197 | ||
aeae883b PB |
4198 | void qmp_block_job_complete(const char *device, Error **errp) |
4199 | { | |
3d948cdf | 4200 | AioContext *aio_context; |
24d6bffe | 4201 | BlockJob *job = find_block_job(device, &aio_context, errp); |
aeae883b PB |
4202 | |
4203 | if (!job) { | |
aeae883b PB |
4204 | return; |
4205 | } | |
4206 | ||
4207 | trace_qmp_block_job_complete(job); | |
3453d972 | 4208 | job_complete(&job->job, errp); |
3d948cdf | 4209 | aio_context_release(aio_context); |
aeae883b PB |
4210 | } |
4211 | ||
11b61fbc JS |
4212 | void qmp_block_job_finalize(const char *id, Error **errp) |
4213 | { | |
4214 | AioContext *aio_context; | |
4215 | BlockJob *job = find_block_job(id, &aio_context, errp); | |
4216 | ||
4217 | if (!job) { | |
4218 | return; | |
4219 | } | |
4220 | ||
4221 | trace_qmp_block_job_finalize(job); | |
7eaa8fb5 | 4222 | job_finalize(&job->job, errp); |
11b61fbc JS |
4223 | aio_context_release(aio_context); |
4224 | } | |
4225 | ||
75f71059 JS |
4226 | void qmp_block_job_dismiss(const char *id, Error **errp) |
4227 | { | |
4228 | AioContext *aio_context; | |
5f9a6a08 KW |
4229 | BlockJob *bjob = find_block_job(id, &aio_context, errp); |
4230 | Job *job; | |
75f71059 | 4231 | |
5f9a6a08 | 4232 | if (!bjob) { |
75f71059 JS |
4233 | return; |
4234 | } | |
4235 | ||
5f9a6a08 KW |
4236 | trace_qmp_block_job_dismiss(bjob); |
4237 | job = &bjob->job; | |
4238 | job_dismiss(&job, errp); | |
75f71059 JS |
4239 | aio_context_release(aio_context); |
4240 | } | |
4241 | ||
fa40e656 JC |
4242 | void qmp_change_backing_file(const char *device, |
4243 | const char *image_node_name, | |
4244 | const char *backing_file, | |
4245 | Error **errp) | |
4246 | { | |
4247 | BlockDriverState *bs = NULL; | |
729962f6 | 4248 | AioContext *aio_context; |
fa40e656 JC |
4249 | BlockDriverState *image_bs = NULL; |
4250 | Error *local_err = NULL; | |
4251 | bool ro; | |
fa40e656 JC |
4252 | int ret; |
4253 | ||
7b5dca3f KW |
4254 | bs = qmp_get_root_bs(device, errp); |
4255 | if (!bs) { | |
fa40e656 JC |
4256 | return; |
4257 | } | |
4258 | ||
7b5dca3f | 4259 | aio_context = bdrv_get_aio_context(bs); |
729962f6 SH |
4260 | aio_context_acquire(aio_context); |
4261 | ||
fa40e656 JC |
4262 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
4263 | if (local_err) { | |
4264 | error_propagate(errp, local_err); | |
729962f6 | 4265 | goto out; |
fa40e656 JC |
4266 | } |
4267 | ||
4268 | if (!image_bs) { | |
4269 | error_setg(errp, "image file not found"); | |
729962f6 | 4270 | goto out; |
fa40e656 JC |
4271 | } |
4272 | ||
4273 | if (bdrv_find_base(image_bs) == image_bs) { | |
4274 | error_setg(errp, "not allowing backing file change on an image " | |
4275 | "without a backing file"); | |
729962f6 | 4276 | goto out; |
fa40e656 JC |
4277 | } |
4278 | ||
4279 | /* even though we are not necessarily operating on bs, we need it to | |
4280 | * determine if block ops are currently prohibited on the chain */ | |
4281 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
729962f6 | 4282 | goto out; |
fa40e656 JC |
4283 | } |
4284 | ||
4285 | /* final sanity check */ | |
4286 | if (!bdrv_chain_contains(bs, image_bs)) { | |
4287 | error_setg(errp, "'%s' and image file are not in the same chain", | |
4288 | device); | |
729962f6 | 4289 | goto out; |
fa40e656 JC |
4290 | } |
4291 | ||
4292 | /* if not r/w, reopen to make r/w */ | |
fa40e656 JC |
4293 | ro = bdrv_is_read_only(image_bs); |
4294 | ||
4295 | if (ro) { | |
051a60f6 | 4296 | if (bdrv_reopen_set_read_only(image_bs, false, errp) != 0) { |
729962f6 | 4297 | goto out; |
fa40e656 JC |
4298 | } |
4299 | } | |
4300 | ||
4301 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
4302 | image_bs->drv ? image_bs->drv->format_name : ""); | |
4303 | ||
4304 | if (ret < 0) { | |
4305 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
4306 | backing_file); | |
4307 | /* don't exit here, so we can try to restore open flags if | |
4308 | * appropriate */ | |
4309 | } | |
4310 | ||
4311 | if (ro) { | |
051a60f6 | 4312 | bdrv_reopen_set_read_only(image_bs, true, &local_err); |
621ff94d | 4313 | error_propagate(errp, local_err); |
fa40e656 | 4314 | } |
729962f6 SH |
4315 | |
4316 | out: | |
4317 | aio_context_release(aio_context); | |
fa40e656 JC |
4318 | } |
4319 | ||
abb21ac3 KW |
4320 | void hmp_drive_add_node(Monitor *mon, const char *optstr) |
4321 | { | |
4322 | QemuOpts *opts; | |
4323 | QDict *qdict; | |
4324 | Error *local_err = NULL; | |
4325 | ||
4326 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); | |
4327 | if (!opts) { | |
4328 | return; | |
4329 | } | |
4330 | ||
4331 | qdict = qemu_opts_to_qdict(opts, NULL); | |
4332 | ||
4333 | if (!qdict_get_try_str(qdict, "node-name")) { | |
cb3e7f08 | 4334 | qobject_unref(qdict); |
abb21ac3 KW |
4335 | error_report("'node-name' needs to be specified"); |
4336 | goto out; | |
4337 | } | |
4338 | ||
4339 | BlockDriverState *bs = bds_tree_init(qdict, &local_err); | |
4340 | if (!bs) { | |
4341 | error_report_err(local_err); | |
4342 | goto out; | |
4343 | } | |
4344 | ||
4345 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); | |
4346 | ||
4347 | out: | |
4348 | qemu_opts_del(opts); | |
4349 | } | |
4350 | ||
d26c9a15 KW |
4351 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
4352 | { | |
be4b67bc | 4353 | BlockDriverState *bs; |
d26c9a15 | 4354 | QObject *obj; |
7d5e199a | 4355 | Visitor *v = qobject_output_visitor_new(&obj); |
d26c9a15 | 4356 | QDict *qdict; |
d26c9a15 KW |
4357 | Error *local_err = NULL; |
4358 | ||
3b098d56 | 4359 | visit_type_BlockdevOptions(v, NULL, &options, &local_err); |
84d18f06 | 4360 | if (local_err) { |
d26c9a15 KW |
4361 | error_propagate(errp, local_err); |
4362 | goto fail; | |
4363 | } | |
4364 | ||
3b098d56 | 4365 | visit_complete(v, &obj); |
7dc847eb | 4366 | qdict = qobject_to(QDict, obj); |
d26c9a15 KW |
4367 | |
4368 | qdict_flatten(qdict); | |
4369 | ||
9ec8873e KW |
4370 | if (!qdict_get_try_str(qdict, "node-name")) { |
4371 | error_setg(errp, "'node-name' must be specified for the root node"); | |
4372 | goto fail; | |
4373 | } | |
9c4218e9 | 4374 | |
9ec8873e KW |
4375 | bs = bds_tree_init(qdict, errp); |
4376 | if (!bs) { | |
4377 | goto fail; | |
d26c9a15 KW |
4378 | } |
4379 | ||
9ec8873e KW |
4380 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
4381 | ||
d26c9a15 | 4382 | fail: |
3b098d56 | 4383 | visit_free(v); |
d26c9a15 KW |
4384 | } |
4385 | ||
1479c730 AG |
4386 | void qmp_x_blockdev_reopen(BlockdevOptions *options, Error **errp) |
4387 | { | |
4388 | BlockDriverState *bs; | |
4389 | AioContext *ctx; | |
4390 | QObject *obj; | |
4391 | Visitor *v = qobject_output_visitor_new(&obj); | |
4392 | Error *local_err = NULL; | |
4393 | BlockReopenQueue *queue; | |
4394 | QDict *qdict; | |
4395 | ||
4396 | /* Check for the selected node name */ | |
4397 | if (!options->has_node_name) { | |
4398 | error_setg(errp, "Node name not specified"); | |
4399 | goto fail; | |
4400 | } | |
4401 | ||
4402 | bs = bdrv_find_node(options->node_name); | |
4403 | if (!bs) { | |
4404 | error_setg(errp, "Cannot find node named '%s'", options->node_name); | |
4405 | goto fail; | |
4406 | } | |
4407 | ||
4408 | /* Put all options in a QDict and flatten it */ | |
4409 | visit_type_BlockdevOptions(v, NULL, &options, &local_err); | |
4410 | if (local_err) { | |
4411 | error_propagate(errp, local_err); | |
4412 | goto fail; | |
4413 | } | |
4414 | ||
4415 | visit_complete(v, &obj); | |
4416 | qdict = qobject_to(QDict, obj); | |
4417 | ||
4418 | qdict_flatten(qdict); | |
4419 | ||
4420 | /* Perform the reopen operation */ | |
4421 | ctx = bdrv_get_aio_context(bs); | |
4422 | aio_context_acquire(ctx); | |
4423 | bdrv_subtree_drained_begin(bs); | |
4424 | queue = bdrv_reopen_queue(NULL, bs, qdict, false); | |
4425 | bdrv_reopen_multiple(queue, errp); | |
4426 | bdrv_subtree_drained_end(bs); | |
4427 | aio_context_release(ctx); | |
4428 | ||
4429 | fail: | |
4430 | visit_free(v); | |
4431 | } | |
4432 | ||
79b7a77e | 4433 | void qmp_blockdev_del(const char *node_name, Error **errp) |
81b936ae AG |
4434 | { |
4435 | AioContext *aio_context; | |
81b936ae AG |
4436 | BlockDriverState *bs; |
4437 | ||
9ec8873e KW |
4438 | bs = bdrv_find_node(node_name); |
4439 | if (!bs) { | |
4440 | error_setg(errp, "Cannot find node %s", node_name); | |
81b936ae AG |
4441 | return; |
4442 | } | |
9ec8873e KW |
4443 | if (bdrv_has_blk(bs)) { |
4444 | error_setg(errp, "Node %s is in use", node_name); | |
4445 | return; | |
81b936ae | 4446 | } |
9ec8873e | 4447 | aio_context = bdrv_get_aio_context(bs); |
81b936ae AG |
4448 | aio_context_acquire(aio_context); |
4449 | ||
9ec8873e KW |
4450 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
4451 | goto out; | |
4452 | } | |
9c4218e9 | 4453 | |
70537ed5 | 4454 | if (!QTAILQ_IN_USE(bs, monitor_list)) { |
9ec8873e KW |
4455 | error_setg(errp, "Node %s is not owned by the monitor", |
4456 | bs->node_name); | |
4457 | goto out; | |
81b936ae AG |
4458 | } |
4459 | ||
9ec8873e KW |
4460 | if (bs->refcnt > 1) { |
4461 | error_setg(errp, "Block device %s is in use", | |
4462 | bdrv_get_device_or_node_name(bs)); | |
4463 | goto out; | |
81b936ae AG |
4464 | } |
4465 | ||
9ec8873e KW |
4466 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
4467 | bdrv_unref(bs); | |
4468 | ||
81b936ae AG |
4469 | out: |
4470 | aio_context_release(aio_context); | |
4471 | } | |
4472 | ||
7f821597 WC |
4473 | static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs, |
4474 | const char *child_name) | |
4475 | { | |
4476 | BdrvChild *child; | |
4477 | ||
4478 | QLIST_FOREACH(child, &parent_bs->children, next) { | |
4479 | if (strcmp(child->name, child_name) == 0) { | |
4480 | return child; | |
4481 | } | |
4482 | } | |
4483 | ||
4484 | return NULL; | |
4485 | } | |
4486 | ||
4487 | void qmp_x_blockdev_change(const char *parent, bool has_child, | |
4488 | const char *child, bool has_node, | |
4489 | const char *node, Error **errp) | |
4490 | { | |
4491 | BlockDriverState *parent_bs, *new_bs = NULL; | |
4492 | BdrvChild *p_child; | |
4493 | ||
4494 | parent_bs = bdrv_lookup_bs(parent, parent, errp); | |
4495 | if (!parent_bs) { | |
4496 | return; | |
4497 | } | |
4498 | ||
4499 | if (has_child == has_node) { | |
4500 | if (has_child) { | |
4501 | error_setg(errp, "The parameters child and node are in conflict"); | |
4502 | } else { | |
4503 | error_setg(errp, "Either child or node must be specified"); | |
4504 | } | |
4505 | return; | |
4506 | } | |
4507 | ||
4508 | if (has_child) { | |
4509 | p_child = bdrv_find_child(parent_bs, child); | |
4510 | if (!p_child) { | |
4511 | error_setg(errp, "Node '%s' does not have child '%s'", | |
4512 | parent, child); | |
4513 | return; | |
4514 | } | |
4515 | bdrv_del_child(parent_bs, p_child, errp); | |
4516 | } | |
4517 | ||
4518 | if (has_node) { | |
4519 | new_bs = bdrv_find_node(node); | |
4520 | if (!new_bs) { | |
4521 | error_setg(errp, "Node '%s' not found", node); | |
4522 | return; | |
4523 | } | |
4524 | bdrv_add_child(parent_bs, new_bs, errp); | |
4525 | } | |
4526 | } | |
4527 | ||
fea68bb6 | 4528 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
fb5458cd | 4529 | { |
fea68bb6 | 4530 | BlockJobInfoList *head = NULL, **p_next = &head; |
f0f55ded | 4531 | BlockJob *job; |
fb5458cd | 4532 | |
f0f55ded | 4533 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
559b935f JS |
4534 | BlockJobInfoList *elem; |
4535 | AioContext *aio_context; | |
69691e72 | 4536 | |
559b935f JS |
4537 | if (block_job_is_internal(job)) { |
4538 | continue; | |
4539 | } | |
4540 | elem = g_new0(BlockJobInfoList, 1); | |
4541 | aio_context = blk_get_aio_context(job->blk); | |
69691e72 | 4542 | aio_context_acquire(aio_context); |
559b935f | 4543 | elem->value = block_job_query(job, errp); |
69691e72 | 4544 | aio_context_release(aio_context); |
559b935f JS |
4545 | if (!elem->value) { |
4546 | g_free(elem); | |
4547 | qapi_free_BlockJobInfoList(head); | |
4548 | return NULL; | |
4549 | } | |
f0f55ded AG |
4550 | *p_next = elem; |
4551 | p_next = &elem->next; | |
fb5458cd | 4552 | } |
fb5458cd | 4553 | |
fea68bb6 | 4554 | return head; |
fb5458cd | 4555 | } |
4d454574 | 4556 | |
ca00bbb1 | 4557 | void qmp_x_blockdev_set_iothread(const char *node_name, StrOrNull *iothread, |
882e9b89 | 4558 | bool has_force, bool force, Error **errp) |
ca00bbb1 SH |
4559 | { |
4560 | AioContext *old_context; | |
4561 | AioContext *new_context; | |
4562 | BlockDriverState *bs; | |
4563 | ||
4564 | bs = bdrv_find_node(node_name); | |
4565 | if (!bs) { | |
4566 | error_setg(errp, "Cannot find node %s", node_name); | |
4567 | return; | |
4568 | } | |
4569 | ||
882e9b89 SH |
4570 | /* Protects against accidents. */ |
4571 | if (!(has_force && force) && bdrv_has_blk(bs)) { | |
4572 | error_setg(errp, "Node %s is associated with a BlockBackend and could " | |
4573 | "be in use (use force=true to override this check)", | |
4574 | node_name); | |
ca00bbb1 SH |
4575 | return; |
4576 | } | |
4577 | ||
4578 | if (iothread->type == QTYPE_QSTRING) { | |
4579 | IOThread *obj = iothread_by_id(iothread->u.s); | |
4580 | if (!obj) { | |
4581 | error_setg(errp, "Cannot find iothread %s", iothread->u.s); | |
4582 | return; | |
4583 | } | |
4584 | ||
4585 | new_context = iothread_get_aio_context(obj); | |
4586 | } else { | |
4587 | new_context = qemu_get_aio_context(); | |
4588 | } | |
4589 | ||
4590 | old_context = bdrv_get_aio_context(bs); | |
4591 | aio_context_acquire(old_context); | |
4592 | ||
8ed7d42f | 4593 | bdrv_try_set_aio_context(bs, new_context, errp); |
ca00bbb1 SH |
4594 | |
4595 | aio_context_release(old_context); | |
4596 | } | |
4597 | ||
cb8aac37 | 4598 | void qmp_block_latency_histogram_set( |
af0a2265 | 4599 | const char *id, |
7e5c776d VSO |
4600 | bool has_boundaries, uint64List *boundaries, |
4601 | bool has_boundaries_read, uint64List *boundaries_read, | |
4602 | bool has_boundaries_write, uint64List *boundaries_write, | |
4603 | bool has_boundaries_flush, uint64List *boundaries_flush, | |
4604 | Error **errp) | |
4605 | { | |
af0a2265 | 4606 | BlockBackend *blk = qmp_get_blk(NULL, id, errp); |
7e5c776d | 4607 | BlockAcctStats *stats; |
63d5341f | 4608 | int ret; |
7e5c776d VSO |
4609 | |
4610 | if (!blk) { | |
7e5c776d VSO |
4611 | return; |
4612 | } | |
af0a2265 | 4613 | |
7e5c776d VSO |
4614 | stats = blk_get_stats(blk); |
4615 | ||
4616 | if (!has_boundaries && !has_boundaries_read && !has_boundaries_write && | |
4617 | !has_boundaries_flush) | |
4618 | { | |
4619 | block_latency_histograms_clear(stats); | |
4620 | return; | |
4621 | } | |
4622 | ||
4623 | if (has_boundaries || has_boundaries_read) { | |
63d5341f | 4624 | ret = block_latency_histogram_set( |
7e5c776d VSO |
4625 | stats, BLOCK_ACCT_READ, |
4626 | has_boundaries_read ? boundaries_read : boundaries); | |
63d5341f | 4627 | if (ret) { |
af0a2265 | 4628 | error_setg(errp, "Device '%s' set read boundaries fail", id); |
63d5341f ZP |
4629 | return; |
4630 | } | |
7e5c776d VSO |
4631 | } |
4632 | ||
4633 | if (has_boundaries || has_boundaries_write) { | |
63d5341f | 4634 | ret = block_latency_histogram_set( |
7e5c776d VSO |
4635 | stats, BLOCK_ACCT_WRITE, |
4636 | has_boundaries_write ? boundaries_write : boundaries); | |
63d5341f | 4637 | if (ret) { |
af0a2265 | 4638 | error_setg(errp, "Device '%s' set write boundaries fail", id); |
63d5341f ZP |
4639 | return; |
4640 | } | |
7e5c776d VSO |
4641 | } |
4642 | ||
4643 | if (has_boundaries || has_boundaries_flush) { | |
63d5341f | 4644 | ret = block_latency_histogram_set( |
7e5c776d VSO |
4645 | stats, BLOCK_ACCT_FLUSH, |
4646 | has_boundaries_flush ? boundaries_flush : boundaries); | |
63d5341f | 4647 | if (ret) { |
af0a2265 | 4648 | error_setg(errp, "Device '%s' set flush boundaries fail", id); |
63d5341f ZP |
4649 | return; |
4650 | } | |
7e5c776d VSO |
4651 | } |
4652 | } | |
4653 | ||
0006383e | 4654 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 4655 | .name = "drive", |
0006383e | 4656 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
4657 | .desc = { |
4658 | { | |
4d454574 PB |
4659 | .name = "snapshot", |
4660 | .type = QEMU_OPT_BOOL, | |
4661 | .help = "enable/disable snapshot mode", | |
4d454574 PB |
4662 | },{ |
4663 | .name = "aio", | |
4664 | .type = QEMU_OPT_STRING, | |
f80f2673 | 4665 | .help = "host AIO implementation (threads, native, io_uring)", |
e4b24b49 KW |
4666 | },{ |
4667 | .name = BDRV_OPT_CACHE_WB, | |
4668 | .type = QEMU_OPT_BOOL, | |
4669 | .help = "Enable writeback mode", | |
4d454574 PB |
4670 | },{ |
4671 | .name = "format", | |
4672 | .type = QEMU_OPT_STRING, | |
4673 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
4674 | },{ |
4675 | .name = "rerror", | |
4676 | .type = QEMU_OPT_STRING, | |
4677 | .help = "read error action", | |
4678 | },{ | |
4679 | .name = "werror", | |
4680 | .type = QEMU_OPT_STRING, | |
4681 | .help = "write error action", | |
4d454574 | 4682 | },{ |
4e200cf8 | 4683 | .name = BDRV_OPT_READ_ONLY, |
4d454574 PB |
4684 | .type = QEMU_OPT_BOOL, |
4685 | .help = "open drive file as read-only", | |
a2a7862c PJ |
4686 | }, |
4687 | ||
4688 | THROTTLE_OPTS, | |
4689 | ||
4690 | { | |
76f4afb4 AG |
4691 | .name = "throttling.group", |
4692 | .type = QEMU_OPT_STRING, | |
4693 | .help = "name of the block throttling group", | |
4d454574 PB |
4694 | },{ |
4695 | .name = "copy-on-read", | |
4696 | .type = QEMU_OPT_BOOL, | |
4697 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
4698 | },{ |
4699 | .name = "detect-zeroes", | |
4700 | .type = QEMU_OPT_STRING, | |
4701 | .help = "try to optimize zero writes (off, on, unmap)", | |
362e9299 AG |
4702 | },{ |
4703 | .name = "stats-account-invalid", | |
4704 | .type = QEMU_OPT_BOOL, | |
4705 | .help = "whether to account for invalid I/O operations " | |
4706 | "in the statistics", | |
4707 | },{ | |
4708 | .name = "stats-account-failed", | |
4709 | .type = QEMU_OPT_BOOL, | |
4710 | .help = "whether to account for failed I/O operations " | |
4711 | "in the statistics", | |
4d454574 PB |
4712 | }, |
4713 | { /* end of list */ } | |
4714 | }, | |
4715 | }; | |
0006383e KW |
4716 | |
4717 | QemuOptsList qemu_drive_opts = { | |
4718 | .name = "drive", | |
4719 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
4720 | .desc = { | |
492fdc6f KW |
4721 | /* |
4722 | * no elements => accept any params | |
4723 | * validation will happen later | |
4724 | */ | |
0006383e KW |
4725 | { /* end of list */ } |
4726 | }, | |
4727 | }; |