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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 | ||
26f54e9a | 33 | #include "sysemu/block-backend.h" |
9c17d615 | 34 | #include "sysemu/blockdev.h" |
0d09e41a | 35 | #include "hw/block/block.h" |
737e150e | 36 | #include "block/blockjob.h" |
76f4afb4 | 37 | #include "block/throttle-groups.h" |
83c9089e | 38 | #include "monitor/monitor.h" |
d49b6836 | 39 | #include "qemu/error-report.h" |
1de7afc9 PB |
40 | #include "qemu/option.h" |
41 | #include "qemu/config-file.h" | |
7b1b5d19 | 42 | #include "qapi/qmp/types.h" |
d26c9a15 | 43 | #include "qapi-visit.h" |
cc7a8ea7 | 44 | #include "qapi/qmp/qerror.h" |
d26c9a15 | 45 | #include "qapi/qmp-output-visitor.h" |
9e7dac7c | 46 | #include "qapi/util.h" |
9c17d615 | 47 | #include "sysemu/sysemu.h" |
737e150e | 48 | #include "block/block_int.h" |
a4dea8a9 | 49 | #include "qmp-commands.h" |
12bd451f | 50 | #include "trace.h" |
9c17d615 | 51 | #include "sysemu/arch_init.h" |
666daa68 | 52 | |
1960966d MA |
53 | static const char *const if_name[IF_COUNT] = { |
54 | [IF_NONE] = "none", | |
55 | [IF_IDE] = "ide", | |
56 | [IF_SCSI] = "scsi", | |
57 | [IF_FLOPPY] = "floppy", | |
58 | [IF_PFLASH] = "pflash", | |
59 | [IF_MTD] = "mtd", | |
60 | [IF_SD] = "sd", | |
61 | [IF_VIRTIO] = "virtio", | |
62 | [IF_XEN] = "xen", | |
63 | }; | |
64 | ||
21dff8cf | 65 | static int if_max_devs[IF_COUNT] = { |
27d6bf40 MA |
66 | /* |
67 | * Do not change these numbers! They govern how drive option | |
68 | * index maps to unit and bus. That mapping is ABI. | |
69 | * | |
70 | * All controllers used to imlement if=T drives need to support | |
71 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
72 | * Otherwise, some index values map to "impossible" bus, unit | |
73 | * values. | |
74 | * | |
75 | * For instance, if you change [IF_SCSI] to 255, -drive | |
76 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
77 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
78 | * the drive can't be set up. Regression. | |
79 | */ | |
80 | [IF_IDE] = 2, | |
81 | [IF_SCSI] = 7, | |
1960966d MA |
82 | }; |
83 | ||
21dff8cf JS |
84 | /** |
85 | * Boards may call this to offer board-by-board overrides | |
86 | * of the default, global values. | |
87 | */ | |
88 | void override_max_devs(BlockInterfaceType type, int max_devs) | |
89 | { | |
18e46a03 | 90 | BlockBackend *blk; |
21dff8cf JS |
91 | DriveInfo *dinfo; |
92 | ||
93 | if (max_devs <= 0) { | |
94 | return; | |
95 | } | |
96 | ||
18e46a03 MA |
97 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
98 | dinfo = blk_legacy_dinfo(blk); | |
21dff8cf JS |
99 | if (dinfo->type == type) { |
100 | fprintf(stderr, "Cannot override units-per-bus property of" | |
101 | " the %s interface, because a drive of that type has" | |
102 | " already been added.\n", if_name[type]); | |
103 | g_assert_not_reached(); | |
104 | } | |
105 | } | |
106 | ||
107 | if_max_devs[type] = max_devs; | |
108 | } | |
109 | ||
14bafc54 MA |
110 | /* |
111 | * We automatically delete the drive when a device using it gets | |
112 | * unplugged. Questionable feature, but we can't just drop it. | |
113 | * Device models call blockdev_mark_auto_del() to schedule the | |
114 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
115 | * when deletion is actually safe. | |
116 | */ | |
4be74634 | 117 | void blockdev_mark_auto_del(BlockBackend *blk) |
14bafc54 | 118 | { |
18e46a03 | 119 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
4be74634 | 120 | BlockDriverState *bs = blk_bs(blk); |
91fddb0d | 121 | AioContext *aio_context; |
14bafc54 | 122 | |
26f8b3a8 | 123 | if (!dinfo) { |
2d246f01 KW |
124 | return; |
125 | } | |
126 | ||
5433c24f HR |
127 | if (bs) { |
128 | aio_context = bdrv_get_aio_context(bs); | |
129 | aio_context_acquire(aio_context); | |
91fddb0d | 130 | |
5433c24f HR |
131 | if (bs->job) { |
132 | block_job_cancel(bs->job); | |
133 | } | |
91fddb0d | 134 | |
5433c24f HR |
135 | aio_context_release(aio_context); |
136 | } | |
91fddb0d | 137 | |
26f8b3a8 | 138 | dinfo->auto_del = 1; |
14bafc54 MA |
139 | } |
140 | ||
4be74634 | 141 | void blockdev_auto_del(BlockBackend *blk) |
14bafc54 | 142 | { |
18e46a03 | 143 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
14bafc54 | 144 | |
0fc0f1fa | 145 | if (dinfo && dinfo->auto_del) { |
b9fe8a7a | 146 | blk_unref(blk); |
14bafc54 MA |
147 | } |
148 | } | |
149 | ||
d8f94e1b JS |
150 | /** |
151 | * Returns the current mapping of how many units per bus | |
152 | * a particular interface can support. | |
153 | * | |
154 | * A positive integer indicates n units per bus. | |
155 | * 0 implies the mapping has not been established. | |
156 | * -1 indicates an invalid BlockInterfaceType was given. | |
157 | */ | |
158 | int drive_get_max_devs(BlockInterfaceType type) | |
159 | { | |
160 | if (type >= IF_IDE && type < IF_COUNT) { | |
161 | return if_max_devs[type]; | |
162 | } | |
163 | ||
164 | return -1; | |
165 | } | |
166 | ||
505a7fb1 MA |
167 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
168 | { | |
169 | int max_devs = if_max_devs[type]; | |
170 | return max_devs ? index / max_devs : 0; | |
171 | } | |
172 | ||
173 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
174 | { | |
175 | int max_devs = if_max_devs[type]; | |
176 | return max_devs ? index % max_devs : index; | |
177 | } | |
178 | ||
2292ddae MA |
179 | QemuOpts *drive_def(const char *optstr) |
180 | { | |
70b94331 | 181 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
2292ddae MA |
182 | } |
183 | ||
184 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 185 | const char *optstr) |
666daa68 | 186 | { |
666daa68 MA |
187 | QemuOpts *opts; |
188 | ||
2292ddae | 189 | opts = drive_def(optstr); |
666daa68 MA |
190 | if (!opts) { |
191 | return NULL; | |
192 | } | |
2292ddae | 193 | if (type != IF_DEFAULT) { |
f43e47db | 194 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
2292ddae MA |
195 | } |
196 | if (index >= 0) { | |
a8b18f8f | 197 | qemu_opt_set_number(opts, "index", index, &error_abort); |
2292ddae | 198 | } |
666daa68 | 199 | if (file) |
f43e47db | 200 | qemu_opt_set(opts, "file", file, &error_abort); |
666daa68 MA |
201 | return opts; |
202 | } | |
203 | ||
204 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
205 | { | |
18e46a03 | 206 | BlockBackend *blk; |
666daa68 MA |
207 | DriveInfo *dinfo; |
208 | ||
18e46a03 MA |
209 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
210 | dinfo = blk_legacy_dinfo(blk); | |
211 | if (dinfo && dinfo->type == type | |
212 | && dinfo->bus == bus && dinfo->unit == unit) { | |
666daa68 | 213 | return dinfo; |
18e46a03 | 214 | } |
666daa68 MA |
215 | } |
216 | ||
217 | return NULL; | |
218 | } | |
219 | ||
a66c9dc7 JS |
220 | bool drive_check_orphaned(void) |
221 | { | |
18e46a03 | 222 | BlockBackend *blk; |
a66c9dc7 JS |
223 | DriveInfo *dinfo; |
224 | bool rs = false; | |
225 | ||
18e46a03 MA |
226 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
227 | dinfo = blk_legacy_dinfo(blk); | |
a66c9dc7 JS |
228 | /* If dinfo->bdrv->dev is NULL, it has no device attached. */ |
229 | /* Unless this is a default drive, this may be an oversight. */ | |
a7f53e26 | 230 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
a66c9dc7 JS |
231 | dinfo->type != IF_NONE) { |
232 | fprintf(stderr, "Warning: Orphaned drive without device: " | |
233 | "id=%s,file=%s,if=%s,bus=%d,unit=%d\n", | |
5433c24f HR |
234 | blk_name(blk), blk_bs(blk) ? blk_bs(blk)->filename : "", |
235 | if_name[dinfo->type], dinfo->bus, dinfo->unit); | |
a66c9dc7 JS |
236 | rs = true; |
237 | } | |
238 | } | |
239 | ||
240 | return rs; | |
241 | } | |
242 | ||
f1bd51ac MA |
243 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
244 | { | |
245 | return drive_get(type, | |
246 | drive_index_to_bus_id(type, index), | |
247 | drive_index_to_unit_id(type, index)); | |
248 | } | |
249 | ||
666daa68 MA |
250 | int drive_get_max_bus(BlockInterfaceType type) |
251 | { | |
252 | int max_bus; | |
18e46a03 | 253 | BlockBackend *blk; |
666daa68 MA |
254 | DriveInfo *dinfo; |
255 | ||
256 | max_bus = -1; | |
18e46a03 MA |
257 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
258 | dinfo = blk_legacy_dinfo(blk); | |
259 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { | |
666daa68 | 260 | max_bus = dinfo->bus; |
18e46a03 | 261 | } |
666daa68 MA |
262 | } |
263 | return max_bus; | |
264 | } | |
265 | ||
13839974 MA |
266 | /* Get a block device. This should only be used for single-drive devices |
267 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
268 | appropriate bus. */ | |
269 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
270 | { | |
271 | static int next_block_unit[IF_COUNT]; | |
272 | ||
273 | return drive_get(type, 0, next_block_unit[type]++); | |
274 | } | |
275 | ||
666daa68 MA |
276 | static void bdrv_format_print(void *opaque, const char *name) |
277 | { | |
807105a7 | 278 | error_printf(" %s", name); |
666daa68 MA |
279 | } |
280 | ||
aa398a5c SH |
281 | typedef struct { |
282 | QEMUBH *bh; | |
fa510ebf FZ |
283 | BlockDriverState *bs; |
284 | } BDRVPutRefBH; | |
aa398a5c | 285 | |
b681072d | 286 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
287 | { |
288 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 289 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 290 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 291 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 292 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 293 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 294 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 295 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 296 | } else { |
b681072d KW |
297 | error_setg(errp, "'%s' invalid %s error action", |
298 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
299 | return -1; |
300 | } | |
301 | } | |
302 | ||
cc0681c4 | 303 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
0563e191 | 304 | { |
cc0681c4 BC |
305 | if (throttle_conflicting(cfg)) { |
306 | error_setg(errp, "bps/iops/max total values and read/write values" | |
307 | " cannot be used at the same time"); | |
0563e191 ZYW |
308 | return false; |
309 | } | |
310 | ||
cc0681c4 BC |
311 | if (!throttle_is_valid(cfg)) { |
312 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); | |
7d81c141 SH |
313 | return false; |
314 | } | |
315 | ||
ee2bdc33 SH |
316 | if (throttle_max_is_missing_limit(cfg)) { |
317 | error_setg(errp, "bps_max/iops_max require corresponding" | |
318 | " bps/iops values"); | |
319 | return false; | |
320 | } | |
321 | ||
0563e191 ZYW |
322 | return true; |
323 | } | |
324 | ||
33cb7dc8 KW |
325 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
326 | ||
fbf8175e HR |
327 | /* All parameters but @opts are optional and may be set to NULL. */ |
328 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, | |
329 | const char **throttling_group, ThrottleConfig *throttle_cfg, | |
330 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) | |
331 | { | |
332 | const char *discard; | |
333 | Error *local_error = NULL; | |
334 | const char *aio; | |
335 | ||
336 | if (bdrv_flags) { | |
337 | if (!qemu_opt_get_bool(opts, "read-only", false)) { | |
338 | *bdrv_flags |= BDRV_O_RDWR; | |
339 | } | |
340 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { | |
341 | *bdrv_flags |= BDRV_O_COPY_ON_READ; | |
342 | } | |
343 | ||
344 | if ((discard = qemu_opt_get(opts, "discard")) != NULL) { | |
345 | if (bdrv_parse_discard_flags(discard, bdrv_flags) != 0) { | |
346 | error_setg(errp, "Invalid discard option"); | |
347 | return; | |
348 | } | |
349 | } | |
350 | ||
351 | if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true)) { | |
352 | *bdrv_flags |= BDRV_O_CACHE_WB; | |
353 | } | |
354 | if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_DIRECT, false)) { | |
355 | *bdrv_flags |= BDRV_O_NOCACHE; | |
356 | } | |
357 | if (qemu_opt_get_bool(opts, BDRV_OPT_CACHE_NO_FLUSH, false)) { | |
358 | *bdrv_flags |= BDRV_O_NO_FLUSH; | |
359 | } | |
360 | ||
361 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { | |
362 | if (!strcmp(aio, "native")) { | |
363 | *bdrv_flags |= BDRV_O_NATIVE_AIO; | |
364 | } else if (!strcmp(aio, "threads")) { | |
365 | /* this is the default */ | |
366 | } else { | |
367 | error_setg(errp, "invalid aio option"); | |
368 | return; | |
369 | } | |
370 | } | |
371 | } | |
372 | ||
373 | /* disk I/O throttling */ | |
374 | if (throttling_group) { | |
375 | *throttling_group = qemu_opt_get(opts, "throttling.group"); | |
376 | } | |
377 | ||
378 | if (throttle_cfg) { | |
379 | memset(throttle_cfg, 0, sizeof(*throttle_cfg)); | |
380 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = | |
381 | qemu_opt_get_number(opts, "throttling.bps-total", 0); | |
382 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = | |
383 | qemu_opt_get_number(opts, "throttling.bps-read", 0); | |
384 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = | |
385 | qemu_opt_get_number(opts, "throttling.bps-write", 0); | |
386 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = | |
387 | qemu_opt_get_number(opts, "throttling.iops-total", 0); | |
388 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = | |
389 | qemu_opt_get_number(opts, "throttling.iops-read", 0); | |
390 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = | |
391 | qemu_opt_get_number(opts, "throttling.iops-write", 0); | |
392 | ||
393 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = | |
394 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
395 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = | |
396 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
397 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = | |
398 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
399 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = | |
400 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
401 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = | |
402 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
403 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = | |
404 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
405 | ||
406 | throttle_cfg->op_size = | |
407 | qemu_opt_get_number(opts, "throttling.iops-size", 0); | |
408 | ||
409 | if (!check_throttle_config(throttle_cfg, errp)) { | |
410 | return; | |
411 | } | |
412 | } | |
413 | ||
414 | if (detect_zeroes) { | |
415 | *detect_zeroes = | |
416 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, | |
417 | qemu_opt_get(opts, "detect-zeroes"), | |
418 | BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX, | |
419 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, | |
420 | &local_error); | |
421 | if (local_error) { | |
422 | error_propagate(errp, local_error); | |
423 | return; | |
424 | } | |
425 | ||
426 | if (bdrv_flags && | |
427 | *detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && | |
428 | !(*bdrv_flags & BDRV_O_UNMAP)) | |
429 | { | |
430 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " | |
431 | "without setting discard operation to unmap"); | |
432 | return; | |
433 | } | |
434 | } | |
435 | } | |
436 | ||
f298d071 | 437 | /* Takes the ownership of bs_opts */ |
18e46a03 MA |
438 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
439 | Error **errp) | |
666daa68 MA |
440 | { |
441 | const char *buf; | |
666daa68 MA |
442 | int bdrv_flags = 0; |
443 | int on_read_error, on_write_error; | |
362e9299 | 444 | bool account_invalid, account_failed; |
2be5506f | 445 | const char *stats_intervals; |
26f54e9a | 446 | BlockBackend *blk; |
a0f1eab1 | 447 | BlockDriverState *bs; |
cc0681c4 | 448 | ThrottleConfig cfg; |
666daa68 | 449 | int snapshot = 0; |
c546194f | 450 | Error *error = NULL; |
0006383e | 451 | QemuOpts *opts; |
0006383e | 452 | const char *id; |
74fe54f2 | 453 | bool has_driver_specific_opts; |
fbf8175e HR |
454 | BlockdevDetectZeroesOptions detect_zeroes = |
455 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; | |
456 | const char *throttling_group = NULL; | |
666daa68 | 457 | |
f298d071 KW |
458 | /* Check common options by copying from bs_opts to opts, all other options |
459 | * stay in bs_opts for processing by bdrv_open(). */ | |
460 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 461 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 462 | if (error) { |
b681072d | 463 | error_propagate(errp, error); |
6376f952 | 464 | goto err_no_opts; |
0006383e KW |
465 | } |
466 | ||
0006383e | 467 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 468 | if (error) { |
b681072d | 469 | error_propagate(errp, error); |
ec9c10d2 | 470 | goto early_err; |
0006383e KW |
471 | } |
472 | ||
473 | if (id) { | |
474 | qdict_del(bs_opts, "id"); | |
475 | } | |
476 | ||
74fe54f2 KW |
477 | has_driver_specific_opts = !!qdict_size(bs_opts); |
478 | ||
666daa68 | 479 | /* extract parameters */ |
666daa68 | 480 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
666daa68 | 481 | |
362e9299 AG |
482 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
483 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); | |
484 | ||
2be5506f AG |
485 | stats_intervals = qemu_opt_get(opts, "stats-intervals"); |
486 | ||
fbf8175e HR |
487 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
488 | &detect_zeroes, &error); | |
489 | if (error) { | |
490 | error_propagate(errp, error); | |
491 | goto early_err; | |
666daa68 | 492 | } |
666daa68 MA |
493 | |
494 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
495 | if (is_help_option(buf)) { |
496 | error_printf("Supported formats:"); | |
497 | bdrv_iterate_format(bdrv_format_print, NULL); | |
498 | error_printf("\n"); | |
ec9c10d2 | 499 | goto early_err; |
666daa68 | 500 | } |
74fe54f2 | 501 | |
e4342ce5 HR |
502 | if (qdict_haskey(bs_opts, "driver")) { |
503 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); | |
ec9c10d2 | 504 | goto early_err; |
6db5f5d6 | 505 | } |
e4342ce5 | 506 | qdict_put(bs_opts, "driver", qstring_from_str(buf)); |
666daa68 MA |
507 | } |
508 | ||
92aa5c6d | 509 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 510 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 511 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 512 | if (error) { |
b681072d | 513 | error_propagate(errp, error); |
ec9c10d2 | 514 | goto early_err; |
666daa68 MA |
515 | } |
516 | } | |
517 | ||
92aa5c6d | 518 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 519 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 520 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 521 | if (error) { |
b681072d | 522 | error_propagate(errp, error); |
ec9c10d2 | 523 | goto early_err; |
666daa68 MA |
524 | } |
525 | } | |
526 | ||
5ec18f8c HR |
527 | if (snapshot) { |
528 | /* always use cache=unsafe with snapshot */ | |
529 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
530 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
531 | } | |
532 | ||
326642bc | 533 | /* init */ |
e4342ce5 | 534 | if ((!file || !*file) && !has_driver_specific_opts) { |
5ec18f8c HR |
535 | BlockBackendRootState *blk_rs; |
536 | ||
537 | blk = blk_new(qemu_opts_id(opts), errp); | |
e4342ce5 HR |
538 | if (!blk) { |
539 | goto early_err; | |
540 | } | |
abd7f68d | 541 | |
5ec18f8c HR |
542 | blk_rs = blk_get_root_state(blk); |
543 | blk_rs->open_flags = bdrv_flags; | |
fbf8175e | 544 | blk_rs->read_only = !(bdrv_flags & BDRV_O_RDWR); |
5ec18f8c HR |
545 | blk_rs->detect_zeroes = detect_zeroes; |
546 | ||
547 | if (throttle_enabled(&cfg)) { | |
548 | if (!throttling_group) { | |
549 | throttling_group = blk_name(blk); | |
550 | } | |
551 | blk_rs->throttle_group = g_strdup(throttling_group); | |
552 | blk_rs->throttle_state = throttle_group_incref(throttling_group); | |
553 | blk_rs->throttle_state->cfg = cfg; | |
554 | } | |
0563e191 | 555 | |
e4342ce5 HR |
556 | QDECREF(bs_opts); |
557 | } else { | |
558 | if (file && !*file) { | |
c2ad1b0c | 559 | file = NULL; |
c2ad1b0c | 560 | } |
666daa68 | 561 | |
e4342ce5 HR |
562 | blk = blk_new_open(qemu_opts_id(opts), file, NULL, bs_opts, bdrv_flags, |
563 | errp); | |
564 | if (!blk) { | |
565 | goto err_no_bs_opts; | |
566 | } | |
567 | bs = blk_bs(blk); | |
ed9d4205 | 568 | |
5ec18f8c | 569 | bs->detect_zeroes = detect_zeroes; |
666daa68 | 570 | |
5ec18f8c HR |
571 | /* disk I/O throttling */ |
572 | if (throttle_enabled(&cfg)) { | |
573 | if (!throttling_group) { | |
574 | throttling_group = blk_name(blk); | |
575 | } | |
576 | bdrv_io_limits_enable(bs, throttling_group); | |
577 | bdrv_set_io_limits(bs, &cfg); | |
578 | } | |
0006383e | 579 | |
5ec18f8c HR |
580 | if (bdrv_key_required(bs)) { |
581 | autostart = 0; | |
76f4afb4 | 582 | } |
362e9299 AG |
583 | |
584 | block_acct_init(blk_get_stats(blk), account_invalid, account_failed); | |
2be5506f AG |
585 | |
586 | if (stats_intervals) { | |
587 | char **intervals = g_strsplit(stats_intervals, ":", 0); | |
588 | unsigned i; | |
589 | ||
590 | if (*stats_intervals == '\0') { | |
591 | error_setg(&error, "stats-intervals can't have an empty value"); | |
592 | } | |
593 | ||
594 | for (i = 0; !error && intervals[i] != NULL; i++) { | |
595 | unsigned long long val; | |
596 | if (parse_uint_full(intervals[i], &val, 10) == 0 && | |
597 | val > 0 && val <= UINT_MAX) { | |
598 | block_acct_add_interval(blk_get_stats(blk), val); | |
599 | } else { | |
600 | error_setg(&error, "Invalid interval length: '%s'", | |
601 | intervals[i]); | |
602 | } | |
603 | } | |
604 | ||
605 | g_strfreev(intervals); | |
606 | ||
607 | if (error) { | |
608 | error_propagate(errp, error); | |
609 | blk_unref(blk); | |
610 | blk = NULL; | |
611 | goto err_no_bs_opts; | |
612 | } | |
613 | } | |
666daa68 MA |
614 | } |
615 | ||
5ec18f8c | 616 | blk_set_on_error(blk, on_read_error, on_write_error); |
0006383e | 617 | |
e4342ce5 | 618 | err_no_bs_opts: |
0006383e | 619 | qemu_opts_del(opts); |
18e46a03 | 620 | return blk; |
a9ae2bff | 621 | |
ec9c10d2 | 622 | early_err: |
ec9c10d2 | 623 | qemu_opts_del(opts); |
6376f952 MA |
624 | err_no_opts: |
625 | QDECREF(bs_opts); | |
a9ae2bff | 626 | return NULL; |
666daa68 MA |
627 | } |
628 | ||
bd745e23 HR |
629 | static QemuOptsList qemu_root_bds_opts; |
630 | ||
631 | /* Takes the ownership of bs_opts */ | |
632 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) | |
633 | { | |
634 | BlockDriverState *bs; | |
635 | QemuOpts *opts; | |
636 | Error *local_error = NULL; | |
637 | BlockdevDetectZeroesOptions detect_zeroes; | |
638 | int ret; | |
639 | int bdrv_flags = 0; | |
640 | ||
641 | opts = qemu_opts_create(&qemu_root_bds_opts, NULL, 1, errp); | |
642 | if (!opts) { | |
643 | goto fail; | |
644 | } | |
645 | ||
646 | qemu_opts_absorb_qdict(opts, bs_opts, &local_error); | |
647 | if (local_error) { | |
648 | error_propagate(errp, local_error); | |
649 | goto fail; | |
650 | } | |
651 | ||
652 | extract_common_blockdev_options(opts, &bdrv_flags, NULL, NULL, | |
653 | &detect_zeroes, &local_error); | |
654 | if (local_error) { | |
655 | error_propagate(errp, local_error); | |
656 | goto fail; | |
657 | } | |
658 | ||
659 | bs = NULL; | |
660 | ret = bdrv_open(&bs, NULL, NULL, bs_opts, bdrv_flags, errp); | |
661 | if (ret < 0) { | |
662 | goto fail_no_bs_opts; | |
663 | } | |
664 | ||
665 | bs->detect_zeroes = detect_zeroes; | |
666 | ||
667 | fail_no_bs_opts: | |
668 | qemu_opts_del(opts); | |
669 | return bs; | |
670 | ||
671 | fail: | |
672 | qemu_opts_del(opts); | |
673 | QDECREF(bs_opts); | |
674 | return NULL; | |
675 | } | |
676 | ||
5abbf0ee KW |
677 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
678 | Error **errp) | |
57975222 KW |
679 | { |
680 | const char *value; | |
681 | ||
682 | value = qemu_opt_get(opts, from); | |
683 | if (value) { | |
5abbf0ee KW |
684 | if (qemu_opt_find(opts, to)) { |
685 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " | |
686 | "same time", to, from); | |
687 | return; | |
688 | } | |
20d6cd47 JL |
689 | } |
690 | ||
691 | /* rename all items in opts */ | |
692 | while ((value = qemu_opt_get(opts, from))) { | |
f43e47db | 693 | qemu_opt_set(opts, to, value, &error_abort); |
57975222 KW |
694 | qemu_opt_unset(opts, from); |
695 | } | |
696 | } | |
697 | ||
33cb7dc8 KW |
698 | QemuOptsList qemu_legacy_drive_opts = { |
699 | .name = "drive", | |
700 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
701 | .desc = { | |
702 | { | |
87a899c5 KW |
703 | .name = "bus", |
704 | .type = QEMU_OPT_NUMBER, | |
705 | .help = "bus number", | |
706 | },{ | |
707 | .name = "unit", | |
708 | .type = QEMU_OPT_NUMBER, | |
709 | .help = "unit number (i.e. lun for scsi)", | |
710 | },{ | |
711 | .name = "index", | |
712 | .type = QEMU_OPT_NUMBER, | |
713 | .help = "index number", | |
714 | },{ | |
33cb7dc8 KW |
715 | .name = "media", |
716 | .type = QEMU_OPT_STRING, | |
717 | .help = "media type (disk, cdrom)", | |
593d464b KW |
718 | },{ |
719 | .name = "if", | |
720 | .type = QEMU_OPT_STRING, | |
721 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
722 | },{ |
723 | .name = "cyls", | |
724 | .type = QEMU_OPT_NUMBER, | |
725 | .help = "number of cylinders (ide disk geometry)", | |
726 | },{ | |
727 | .name = "heads", | |
728 | .type = QEMU_OPT_NUMBER, | |
729 | .help = "number of heads (ide disk geometry)", | |
730 | },{ | |
731 | .name = "secs", | |
732 | .type = QEMU_OPT_NUMBER, | |
733 | .help = "number of sectors (ide disk geometry)", | |
734 | },{ | |
735 | .name = "trans", | |
736 | .type = QEMU_OPT_STRING, | |
737 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
738 | },{ |
739 | .name = "boot", | |
740 | .type = QEMU_OPT_BOOL, | |
741 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
742 | },{ |
743 | .name = "addr", | |
744 | .type = QEMU_OPT_STRING, | |
745 | .help = "pci address (virtio only)", | |
bcf83158 KW |
746 | },{ |
747 | .name = "serial", | |
748 | .type = QEMU_OPT_STRING, | |
749 | .help = "disk serial number", | |
d095b465 HR |
750 | },{ |
751 | .name = "file", | |
752 | .type = QEMU_OPT_STRING, | |
753 | .help = "file name", | |
33cb7dc8 | 754 | }, |
0ebd24e0 KW |
755 | |
756 | /* Options that are passed on, but have special semantics with -drive */ | |
757 | { | |
758 | .name = "read-only", | |
759 | .type = QEMU_OPT_BOOL, | |
760 | .help = "open drive file as read-only", | |
ee13ed1c KW |
761 | },{ |
762 | .name = "rerror", | |
763 | .type = QEMU_OPT_STRING, | |
764 | .help = "read error action", | |
765 | },{ | |
766 | .name = "werror", | |
767 | .type = QEMU_OPT_STRING, | |
768 | .help = "write error action", | |
0ebd24e0 KW |
769 | },{ |
770 | .name = "copy-on-read", | |
771 | .type = QEMU_OPT_BOOL, | |
772 | .help = "copy read data from backing file into image file", | |
773 | }, | |
774 | ||
33cb7dc8 KW |
775 | { /* end of list */ } |
776 | }, | |
777 | }; | |
778 | ||
60e19e06 | 779 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
57975222 | 780 | { |
29c4e2b5 | 781 | const char *value; |
18e46a03 | 782 | BlockBackend *blk; |
33cb7dc8 | 783 | DriveInfo *dinfo = NULL; |
f298d071 | 784 | QDict *bs_opts; |
33cb7dc8 KW |
785 | QemuOpts *legacy_opts; |
786 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 787 | BlockInterfaceType type; |
b41a7338 | 788 | int cyls, heads, secs, translation; |
87a899c5 | 789 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 790 | const char *devaddr; |
ee13ed1c | 791 | const char *werror, *rerror; |
a7fdbcf0 FZ |
792 | bool read_only = false; |
793 | bool copy_on_read; | |
bcf83158 | 794 | const char *serial; |
d095b465 | 795 | const char *filename; |
33cb7dc8 | 796 | Error *local_err = NULL; |
247147fb | 797 | int i; |
29c4e2b5 | 798 | |
57975222 | 799 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
800 | static const struct { |
801 | const char *from; | |
802 | const char *to; | |
803 | } opt_renames[] = { | |
804 | { "iops", "throttling.iops-total" }, | |
805 | { "iops_rd", "throttling.iops-read" }, | |
806 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 807 | |
247147fb KW |
808 | { "bps", "throttling.bps-total" }, |
809 | { "bps_rd", "throttling.bps-read" }, | |
810 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 811 | |
247147fb KW |
812 | { "iops_max", "throttling.iops-total-max" }, |
813 | { "iops_rd_max", "throttling.iops-read-max" }, | |
814 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 815 | |
247147fb KW |
816 | { "bps_max", "throttling.bps-total-max" }, |
817 | { "bps_rd_max", "throttling.bps-read-max" }, | |
818 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 819 | |
247147fb | 820 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 821 | |
76f4afb4 AG |
822 | { "group", "throttling.group" }, |
823 | ||
247147fb KW |
824 | { "readonly", "read-only" }, |
825 | }; | |
826 | ||
827 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
5abbf0ee KW |
828 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
829 | &local_err); | |
830 | if (local_err) { | |
565f65d2 | 831 | error_report_err(local_err); |
5abbf0ee KW |
832 | return NULL; |
833 | } | |
247147fb | 834 | } |
0f227a94 | 835 | |
29c4e2b5 KW |
836 | value = qemu_opt_get(all_opts, "cache"); |
837 | if (value) { | |
838 | int flags = 0; | |
839 | ||
840 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
841 | error_report("invalid cache option"); | |
842 | return NULL; | |
843 | } | |
844 | ||
845 | /* Specific options take precedence */ | |
54861b92 KW |
846 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
847 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, | |
cccb7967 | 848 | !!(flags & BDRV_O_CACHE_WB), &error_abort); |
29c4e2b5 | 849 | } |
54861b92 KW |
850 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
851 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, | |
cccb7967 | 852 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
29c4e2b5 | 853 | } |
54861b92 KW |
854 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
855 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, | |
cccb7967 | 856 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
29c4e2b5 KW |
857 | } |
858 | qemu_opt_unset(all_opts, "cache"); | |
859 | } | |
860 | ||
f298d071 KW |
861 | /* Get a QDict for processing the options */ |
862 | bs_opts = qdict_new(); | |
863 | qemu_opts_to_qdict(all_opts, bs_opts); | |
864 | ||
87ea75d5 PC |
865 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
866 | &error_abort); | |
33cb7dc8 | 867 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 868 | if (local_err) { |
565f65d2 | 869 | error_report_err(local_err); |
33cb7dc8 KW |
870 | goto fail; |
871 | } | |
872 | ||
26929298 KW |
873 | /* Deprecated option boot=[on|off] */ |
874 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
875 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
876 | "ignored. Future versions will reject this parameter. Please " | |
877 | "update your scripts.\n"); | |
878 | } | |
879 | ||
33cb7dc8 KW |
880 | /* Media type */ |
881 | value = qemu_opt_get(legacy_opts, "media"); | |
882 | if (value) { | |
883 | if (!strcmp(value, "disk")) { | |
884 | media = MEDIA_DISK; | |
885 | } else if (!strcmp(value, "cdrom")) { | |
886 | media = MEDIA_CDROM; | |
a7fdbcf0 | 887 | read_only = true; |
33cb7dc8 KW |
888 | } else { |
889 | error_report("'%s' invalid media", value); | |
890 | goto fail; | |
891 | } | |
892 | } | |
893 | ||
0ebd24e0 | 894 | /* copy-on-read is disabled with a warning for read-only devices */ |
a7fdbcf0 | 895 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
0ebd24e0 KW |
896 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
897 | ||
898 | if (read_only && copy_on_read) { | |
899 | error_report("warning: disabling copy-on-read on read-only drive"); | |
900 | copy_on_read = false; | |
901 | } | |
902 | ||
903 | qdict_put(bs_opts, "read-only", | |
904 | qstring_from_str(read_only ? "on" : "off")); | |
905 | qdict_put(bs_opts, "copy-on-read", | |
906 | qstring_from_str(copy_on_read ? "on" :"off")); | |
907 | ||
593d464b KW |
908 | /* Controller type */ |
909 | value = qemu_opt_get(legacy_opts, "if"); | |
910 | if (value) { | |
911 | for (type = 0; | |
912 | type < IF_COUNT && strcmp(value, if_name[type]); | |
913 | type++) { | |
914 | } | |
915 | if (type == IF_COUNT) { | |
916 | error_report("unsupported bus type '%s'", value); | |
917 | goto fail; | |
918 | } | |
919 | } else { | |
920 | type = block_default_type; | |
921 | } | |
922 | ||
b41a7338 KW |
923 | /* Geometry */ |
924 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
925 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
926 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
927 | ||
928 | if (cyls || heads || secs) { | |
929 | if (cyls < 1) { | |
930 | error_report("invalid physical cyls number"); | |
931 | goto fail; | |
932 | } | |
933 | if (heads < 1) { | |
934 | error_report("invalid physical heads number"); | |
935 | goto fail; | |
936 | } | |
937 | if (secs < 1) { | |
938 | error_report("invalid physical secs number"); | |
939 | goto fail; | |
940 | } | |
941 | } | |
942 | ||
943 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
944 | value = qemu_opt_get(legacy_opts, "trans"); | |
945 | if (value != NULL) { | |
946 | if (!cyls) { | |
947 | error_report("'%s' trans must be used with cyls, heads and secs", | |
948 | value); | |
949 | goto fail; | |
950 | } | |
951 | if (!strcmp(value, "none")) { | |
952 | translation = BIOS_ATA_TRANSLATION_NONE; | |
953 | } else if (!strcmp(value, "lba")) { | |
954 | translation = BIOS_ATA_TRANSLATION_LBA; | |
f31c41ff PB |
955 | } else if (!strcmp(value, "large")) { |
956 | translation = BIOS_ATA_TRANSLATION_LARGE; | |
957 | } else if (!strcmp(value, "rechs")) { | |
958 | translation = BIOS_ATA_TRANSLATION_RECHS; | |
b41a7338 KW |
959 | } else if (!strcmp(value, "auto")) { |
960 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
961 | } else { | |
962 | error_report("'%s' invalid translation type", value); | |
963 | goto fail; | |
964 | } | |
965 | } | |
966 | ||
967 | if (media == MEDIA_CDROM) { | |
968 | if (cyls || secs || heads) { | |
969 | error_report("CHS can't be set with media=cdrom"); | |
970 | goto fail; | |
971 | } | |
972 | } | |
973 | ||
87a899c5 KW |
974 | /* Device address specified by bus/unit or index. |
975 | * If none was specified, try to find the first free one. */ | |
976 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
977 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
978 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
979 | ||
980 | max_devs = if_max_devs[type]; | |
981 | ||
982 | if (index != -1) { | |
983 | if (bus_id != 0 || unit_id != -1) { | |
984 | error_report("index cannot be used with bus and unit"); | |
985 | goto fail; | |
986 | } | |
987 | bus_id = drive_index_to_bus_id(type, index); | |
988 | unit_id = drive_index_to_unit_id(type, index); | |
989 | } | |
990 | ||
991 | if (unit_id == -1) { | |
992 | unit_id = 0; | |
993 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
994 | unit_id++; | |
995 | if (max_devs && unit_id >= max_devs) { | |
996 | unit_id -= max_devs; | |
997 | bus_id++; | |
998 | } | |
999 | } | |
1000 | } | |
1001 | ||
1002 | if (max_devs && unit_id >= max_devs) { | |
1003 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
1004 | goto fail; | |
1005 | } | |
1006 | ||
1007 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
1008 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
1009 | bus_id, unit_id, index); | |
1010 | goto fail; | |
1011 | } | |
1012 | ||
bcf83158 KW |
1013 | /* Serial number */ |
1014 | serial = qemu_opt_get(legacy_opts, "serial"); | |
1015 | ||
87a899c5 KW |
1016 | /* no id supplied -> create one */ |
1017 | if (qemu_opts_id(all_opts) == NULL) { | |
1018 | char *new_id; | |
1019 | const char *mediastr = ""; | |
1020 | if (type == IF_IDE || type == IF_SCSI) { | |
1021 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
1022 | } | |
1023 | if (max_devs) { | |
1024 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
1025 | mediastr, unit_id); | |
1026 | } else { | |
1027 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
1028 | mediastr, unit_id); | |
1029 | } | |
1030 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
1031 | g_free(new_id); | |
1032 | } | |
1033 | ||
394c7d4d KW |
1034 | /* Add virtio block device */ |
1035 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
1036 | if (devaddr && type != IF_VIRTIO) { | |
1037 | error_report("addr is not supported by this bus type"); | |
1038 | goto fail; | |
1039 | } | |
1040 | ||
1041 | if (type == IF_VIRTIO) { | |
1042 | QemuOpts *devopts; | |
87ea75d5 PC |
1043 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
1044 | &error_abort); | |
394c7d4d | 1045 | if (arch_type == QEMU_ARCH_S390X) { |
1f68f1d3 | 1046 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
394c7d4d | 1047 | } else { |
f43e47db | 1048 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
394c7d4d | 1049 | } |
f43e47db MA |
1050 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
1051 | &error_abort); | |
394c7d4d | 1052 | if (devaddr) { |
f43e47db | 1053 | qemu_opt_set(devopts, "addr", devaddr, &error_abort); |
394c7d4d KW |
1054 | } |
1055 | } | |
1056 | ||
d095b465 HR |
1057 | filename = qemu_opt_get(legacy_opts, "file"); |
1058 | ||
ee13ed1c KW |
1059 | /* Check werror/rerror compatibility with if=... */ |
1060 | werror = qemu_opt_get(legacy_opts, "werror"); | |
1061 | if (werror != NULL) { | |
1062 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
1063 | type != IF_NONE) { | |
1064 | error_report("werror is not supported by this bus type"); | |
1065 | goto fail; | |
1066 | } | |
1067 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); | |
1068 | } | |
1069 | ||
1070 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
1071 | if (rerror != NULL) { | |
1072 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
1073 | type != IF_NONE) { | |
1074 | error_report("rerror is not supported by this bus type"); | |
1075 | goto fail; | |
1076 | } | |
1077 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); | |
1078 | } | |
1079 | ||
2d246f01 | 1080 | /* Actual block device init: Functionality shared with blockdev-add */ |
18e46a03 | 1081 | blk = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 1082 | bs_opts = NULL; |
18e46a03 | 1083 | if (!blk) { |
84d18f06 | 1084 | if (local_err) { |
565f65d2 | 1085 | error_report_err(local_err); |
b681072d | 1086 | } |
2d246f01 | 1087 | goto fail; |
b681072d | 1088 | } else { |
84d18f06 | 1089 | assert(!local_err); |
2d246f01 KW |
1090 | } |
1091 | ||
26f8b3a8 MA |
1092 | /* Create legacy DriveInfo */ |
1093 | dinfo = g_malloc0(sizeof(*dinfo)); | |
f298d071 | 1094 | dinfo->opts = all_opts; |
2d246f01 | 1095 | |
b41a7338 KW |
1096 | dinfo->cyls = cyls; |
1097 | dinfo->heads = heads; | |
1098 | dinfo->secs = secs; | |
1099 | dinfo->trans = translation; | |
1100 | ||
ee13ed1c | 1101 | dinfo->type = type; |
87a899c5 KW |
1102 | dinfo->bus = bus_id; |
1103 | dinfo->unit = unit_id; | |
394c7d4d | 1104 | dinfo->devaddr = devaddr; |
bcf83158 KW |
1105 | dinfo->serial = g_strdup(serial); |
1106 | ||
26f8b3a8 MA |
1107 | blk_set_legacy_dinfo(blk, dinfo); |
1108 | ||
e34ef046 KW |
1109 | switch(type) { |
1110 | case IF_IDE: | |
1111 | case IF_SCSI: | |
1112 | case IF_XEN: | |
1113 | case IF_NONE: | |
1114 | dinfo->media_cd = media == MEDIA_CDROM; | |
1115 | break; | |
1116 | default: | |
1117 | break; | |
1118 | } | |
1119 | ||
2d246f01 | 1120 | fail: |
33cb7dc8 | 1121 | qemu_opts_del(legacy_opts); |
3cb0e25c | 1122 | QDECREF(bs_opts); |
2d246f01 | 1123 | return dinfo; |
57975222 KW |
1124 | } |
1125 | ||
3e5a50d6 | 1126 | void hmp_commit(Monitor *mon, const QDict *qdict) |
666daa68 | 1127 | { |
666daa68 | 1128 | const char *device = qdict_get_str(qdict, "device"); |
a0e8544c | 1129 | BlockBackend *blk; |
e8877497 | 1130 | int ret; |
666daa68 | 1131 | |
6ab4b5ab | 1132 | if (!strcmp(device, "all")) { |
e8877497 | 1133 | ret = bdrv_commit_all(); |
6ab4b5ab | 1134 | } else { |
84aa0140 SH |
1135 | BlockDriverState *bs; |
1136 | AioContext *aio_context; | |
1137 | ||
a0e8544c FZ |
1138 | blk = blk_by_name(device); |
1139 | if (!blk) { | |
58513bde | 1140 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 1141 | return; |
6ab4b5ab | 1142 | } |
5433c24f HR |
1143 | if (!blk_is_available(blk)) { |
1144 | monitor_printf(mon, "Device '%s' has no medium\n", device); | |
1145 | return; | |
1146 | } | |
84aa0140 SH |
1147 | |
1148 | bs = blk_bs(blk); | |
1149 | aio_context = bdrv_get_aio_context(bs); | |
1150 | aio_context_acquire(aio_context); | |
1151 | ||
1152 | ret = bdrv_commit(bs); | |
1153 | ||
1154 | aio_context_release(aio_context); | |
58513bde JC |
1155 | } |
1156 | if (ret < 0) { | |
1157 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
1158 | strerror(-ret)); | |
666daa68 MA |
1159 | } |
1160 | } | |
1161 | ||
6a8f9661 EB |
1162 | static void blockdev_do_action(TransactionActionKind type, void *data, |
1163 | Error **errp) | |
6cc2a415 | 1164 | { |
c8a83e85 KW |
1165 | TransactionAction action; |
1166 | TransactionActionList list; | |
6cc2a415 | 1167 | |
6a8f9661 EB |
1168 | action.type = type; |
1169 | action.u.data = data; | |
6cc2a415 PB |
1170 | list.value = &action; |
1171 | list.next = NULL; | |
94d16a64 | 1172 | qmp_transaction(&list, false, NULL, errp); |
6cc2a415 PB |
1173 | } |
1174 | ||
0901f67e BC |
1175 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1176 | bool has_node_name, const char *node_name, | |
1177 | const char *snapshot_file, | |
1178 | bool has_snapshot_node_name, | |
1179 | const char *snapshot_node_name, | |
6106e249 | 1180 | bool has_format, const char *format, |
0901f67e | 1181 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1182 | { |
a911e6ae | 1183 | BlockdevSnapshotSync snapshot = { |
0901f67e | 1184 | .has_device = has_device, |
6cc2a415 | 1185 | .device = (char *) device, |
0901f67e BC |
1186 | .has_node_name = has_node_name, |
1187 | .node_name = (char *) node_name, | |
6cc2a415 | 1188 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1189 | .has_snapshot_node_name = has_snapshot_node_name, |
1190 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1191 | .has_format = has_format, |
1192 | .format = (char *) format, | |
1193 | .has_mode = has_mode, | |
1194 | .mode = mode, | |
1195 | }; | |
c8a83e85 KW |
1196 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
1197 | &snapshot, errp); | |
f8882568 JS |
1198 | } |
1199 | ||
43de7e2d AG |
1200 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
1201 | Error **errp) | |
1202 | { | |
1203 | BlockdevSnapshot snapshot_data = { | |
1204 | .node = (char *) node, | |
1205 | .overlay = (char *) overlay | |
1206 | }; | |
1207 | ||
1208 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, | |
1209 | &snapshot_data, errp); | |
1210 | } | |
1211 | ||
f323bc9e WX |
1212 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1213 | const char *name, | |
1214 | Error **errp) | |
1215 | { | |
1216 | BlockdevSnapshotInternal snapshot = { | |
1217 | .device = (char *) device, | |
1218 | .name = (char *) name | |
1219 | }; | |
1220 | ||
1221 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
1222 | &snapshot, errp); | |
1223 | } | |
1224 | ||
44e3e053 WX |
1225 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1226 | bool has_id, | |
1227 | const char *id, | |
1228 | bool has_name, | |
1229 | const char *name, | |
1230 | Error **errp) | |
1231 | { | |
a0e8544c FZ |
1232 | BlockDriverState *bs; |
1233 | BlockBackend *blk; | |
4ef3982a | 1234 | AioContext *aio_context; |
44e3e053 WX |
1235 | QEMUSnapshotInfo sn; |
1236 | Error *local_err = NULL; | |
1237 | SnapshotInfo *info = NULL; | |
1238 | int ret; | |
1239 | ||
a0e8544c FZ |
1240 | blk = blk_by_name(device); |
1241 | if (!blk) { | |
75158ebb MA |
1242 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1243 | "Device '%s' not found", device); | |
44e3e053 WX |
1244 | return NULL; |
1245 | } | |
5433c24f HR |
1246 | |
1247 | aio_context = blk_get_aio_context(blk); | |
1248 | aio_context_acquire(aio_context); | |
44e3e053 WX |
1249 | |
1250 | if (!has_id) { | |
1251 | id = NULL; | |
1252 | } | |
1253 | ||
1254 | if (!has_name) { | |
1255 | name = NULL; | |
1256 | } | |
1257 | ||
1258 | if (!id && !name) { | |
1259 | error_setg(errp, "Name or id must be provided"); | |
5433c24f | 1260 | goto out_aio_context; |
44e3e053 WX |
1261 | } |
1262 | ||
5433c24f HR |
1263 | if (!blk_is_available(blk)) { |
1264 | error_setg(errp, "Device '%s' has no medium", device); | |
1265 | goto out_aio_context; | |
1266 | } | |
1267 | bs = blk_bs(blk); | |
4ef3982a | 1268 | |
0b928854 SH |
1269 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
1270 | goto out_aio_context; | |
1271 | } | |
1272 | ||
44e3e053 | 1273 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
84d18f06 | 1274 | if (local_err) { |
44e3e053 | 1275 | error_propagate(errp, local_err); |
4ef3982a | 1276 | goto out_aio_context; |
44e3e053 WX |
1277 | } |
1278 | if (!ret) { | |
1279 | error_setg(errp, | |
1280 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1281 | "device '%s'", | |
1282 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
4ef3982a | 1283 | goto out_aio_context; |
44e3e053 WX |
1284 | } |
1285 | ||
1286 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1287 | if (local_err) { |
44e3e053 | 1288 | error_propagate(errp, local_err); |
4ef3982a | 1289 | goto out_aio_context; |
44e3e053 WX |
1290 | } |
1291 | ||
4ef3982a SH |
1292 | aio_context_release(aio_context); |
1293 | ||
5839e53b | 1294 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1295 | info->id = g_strdup(sn.id_str); |
1296 | info->name = g_strdup(sn.name); | |
1297 | info->date_nsec = sn.date_nsec; | |
1298 | info->date_sec = sn.date_sec; | |
1299 | info->vm_state_size = sn.vm_state_size; | |
1300 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1301 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1302 | ||
1303 | return info; | |
4ef3982a SH |
1304 | |
1305 | out_aio_context: | |
1306 | aio_context_release(aio_context); | |
1307 | return NULL; | |
44e3e053 | 1308 | } |
8802d1fd | 1309 | |
341ebc2f JS |
1310 | /** |
1311 | * block_dirty_bitmap_lookup: | |
1312 | * Return a dirty bitmap (if present), after validating | |
1313 | * the node reference and bitmap names. | |
1314 | * | |
1315 | * @node: The name of the BDS node to search for bitmaps | |
1316 | * @name: The name of the bitmap to search for | |
1317 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. | |
1318 | * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL. | |
1319 | * @errp: Output pointer for error information. Can be NULL. | |
1320 | * | |
1321 | * @return: A bitmap object on success, or NULL on failure. | |
1322 | */ | |
1323 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, | |
1324 | const char *name, | |
1325 | BlockDriverState **pbs, | |
1326 | AioContext **paio, | |
1327 | Error **errp) | |
1328 | { | |
1329 | BlockDriverState *bs; | |
1330 | BdrvDirtyBitmap *bitmap; | |
1331 | AioContext *aio_context; | |
1332 | ||
1333 | if (!node) { | |
1334 | error_setg(errp, "Node cannot be NULL"); | |
1335 | return NULL; | |
1336 | } | |
1337 | if (!name) { | |
1338 | error_setg(errp, "Bitmap name cannot be NULL"); | |
1339 | return NULL; | |
1340 | } | |
1341 | bs = bdrv_lookup_bs(node, node, NULL); | |
1342 | if (!bs) { | |
1343 | error_setg(errp, "Node '%s' not found", node); | |
1344 | return NULL; | |
1345 | } | |
1346 | ||
1347 | aio_context = bdrv_get_aio_context(bs); | |
1348 | aio_context_acquire(aio_context); | |
1349 | ||
1350 | bitmap = bdrv_find_dirty_bitmap(bs, name); | |
1351 | if (!bitmap) { | |
1352 | error_setg(errp, "Dirty bitmap '%s' not found", name); | |
1353 | goto fail; | |
1354 | } | |
1355 | ||
1356 | if (pbs) { | |
1357 | *pbs = bs; | |
1358 | } | |
1359 | if (paio) { | |
1360 | *paio = aio_context; | |
1361 | } else { | |
1362 | aio_context_release(aio_context); | |
1363 | } | |
1364 | ||
1365 | return bitmap; | |
1366 | ||
1367 | fail: | |
1368 | aio_context_release(aio_context); | |
1369 | return NULL; | |
1370 | } | |
1371 | ||
b756b9ce | 1372 | /* New and old BlockDriverState structs for atomic group operations */ |
ba0c86a3 | 1373 | |
50f43f0f | 1374 | typedef struct BlkActionState BlkActionState; |
ba0c86a3 | 1375 | |
50f43f0f JS |
1376 | /** |
1377 | * BlkActionOps: | |
1378 | * Table of operations that define an Action. | |
1379 | * | |
1380 | * @instance_size: Size of state struct, in bytes. | |
1381 | * @prepare: Prepare the work, must NOT be NULL. | |
1382 | * @commit: Commit the changes, can be NULL. | |
1383 | * @abort: Abort the changes on fail, can be NULL. | |
1384 | * @clean: Clean up resources after all transaction actions have called | |
1385 | * commit() or abort(). Can be NULL. | |
1386 | * | |
1387 | * Only prepare() may fail. In a single transaction, only one of commit() or | |
1388 | * abort() will be called. clean() will always be called if it is present. | |
1389 | */ | |
1390 | typedef struct BlkActionOps { | |
ba0c86a3 | 1391 | size_t instance_size; |
50f43f0f JS |
1392 | void (*prepare)(BlkActionState *common, Error **errp); |
1393 | void (*commit)(BlkActionState *common); | |
1394 | void (*abort)(BlkActionState *common); | |
1395 | void (*clean)(BlkActionState *common); | |
1396 | } BlkActionOps; | |
ba0c86a3 | 1397 | |
50f43f0f JS |
1398 | /** |
1399 | * BlkActionState: | |
1400 | * Describes one Action's state within a Transaction. | |
1401 | * | |
1402 | * @action: QAPI-defined enum identifying which Action to perform. | |
1403 | * @ops: Table of ActionOps this Action can perform. | |
94d16a64 | 1404 | * @block_job_txn: Transaction which this action belongs to. |
50f43f0f JS |
1405 | * @entry: List membership for all Actions in this Transaction. |
1406 | * | |
1407 | * This structure must be arranged as first member in a subclassed type, | |
1408 | * assuming that the compiler will also arrange it to the same offsets as the | |
1409 | * base class. | |
ba0c86a3 | 1410 | */ |
50f43f0f | 1411 | struct BlkActionState { |
c8a83e85 | 1412 | TransactionAction *action; |
50f43f0f | 1413 | const BlkActionOps *ops; |
94d16a64 JS |
1414 | BlockJobTxn *block_job_txn; |
1415 | TransactionProperties *txn_props; | |
50f43f0f | 1416 | QSIMPLEQ_ENTRY(BlkActionState) entry; |
ba0c86a3 WX |
1417 | }; |
1418 | ||
bbe86010 WX |
1419 | /* internal snapshot private data */ |
1420 | typedef struct InternalSnapshotState { | |
50f43f0f | 1421 | BlkActionState common; |
bbe86010 | 1422 | BlockDriverState *bs; |
5d6e96ef | 1423 | AioContext *aio_context; |
bbe86010 | 1424 | QEMUSnapshotInfo sn; |
507306cc | 1425 | bool created; |
bbe86010 WX |
1426 | } InternalSnapshotState; |
1427 | ||
94d16a64 JS |
1428 | |
1429 | static int action_check_completion_mode(BlkActionState *s, Error **errp) | |
1430 | { | |
1431 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
1432 | error_setg(errp, | |
1433 | "Action '%s' does not support Transaction property " | |
1434 | "completion-mode = %s", | |
1435 | TransactionActionKind_lookup[s->action->type], | |
1436 | ActionCompletionMode_lookup[s->txn_props->completion_mode]); | |
1437 | return -1; | |
1438 | } | |
1439 | return 0; | |
1440 | } | |
1441 | ||
50f43f0f | 1442 | static void internal_snapshot_prepare(BlkActionState *common, |
bbe86010 WX |
1443 | Error **errp) |
1444 | { | |
f70edf99 | 1445 | Error *local_err = NULL; |
bbe86010 WX |
1446 | const char *device; |
1447 | const char *name; | |
a0e8544c | 1448 | BlockBackend *blk; |
bbe86010 WX |
1449 | BlockDriverState *bs; |
1450 | QEMUSnapshotInfo old_sn, *sn; | |
1451 | bool ret; | |
1452 | qemu_timeval tv; | |
1453 | BlockdevSnapshotInternal *internal; | |
1454 | InternalSnapshotState *state; | |
1455 | int ret1; | |
1456 | ||
6a8f9661 | 1457 | g_assert(common->action->type == |
bbe86010 | 1458 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
6a8f9661 | 1459 | internal = common->action->u.blockdev_snapshot_internal_sync; |
bbe86010 WX |
1460 | state = DO_UPCAST(InternalSnapshotState, common, common); |
1461 | ||
1462 | /* 1. parse input */ | |
1463 | device = internal->device; | |
1464 | name = internal->name; | |
1465 | ||
1466 | /* 2. check for validation */ | |
94d16a64 JS |
1467 | if (action_check_completion_mode(common, errp) < 0) { |
1468 | return; | |
1469 | } | |
1470 | ||
a0e8544c FZ |
1471 | blk = blk_by_name(device); |
1472 | if (!blk) { | |
75158ebb MA |
1473 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1474 | "Device '%s' not found", device); | |
bbe86010 WX |
1475 | return; |
1476 | } | |
1477 | ||
5d6e96ef | 1478 | /* AioContext is released in .clean() */ |
5433c24f | 1479 | state->aio_context = blk_get_aio_context(blk); |
5d6e96ef SH |
1480 | aio_context_acquire(state->aio_context); |
1481 | ||
5433c24f | 1482 | if (!blk_is_available(blk)) { |
c6bd8c70 | 1483 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
bbe86010 WX |
1484 | return; |
1485 | } | |
5433c24f | 1486 | bs = blk_bs(blk); |
bbe86010 | 1487 | |
507306cc FZ |
1488 | state->bs = bs; |
1489 | bdrv_drained_begin(bs); | |
1490 | ||
3dc7ca3c SH |
1491 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
1492 | return; | |
1493 | } | |
1494 | ||
bbe86010 | 1495 | if (bdrv_is_read_only(bs)) { |
81e5f78a | 1496 | error_setg(errp, "Device '%s' is read only", device); |
bbe86010 WX |
1497 | return; |
1498 | } | |
1499 | ||
1500 | if (!bdrv_can_snapshot(bs)) { | |
81e5f78a AG |
1501 | error_setg(errp, "Block format '%s' used by device '%s' " |
1502 | "does not support internal snapshots", | |
1503 | bs->drv->format_name, device); | |
bbe86010 WX |
1504 | return; |
1505 | } | |
1506 | ||
1507 | if (!strlen(name)) { | |
1508 | error_setg(errp, "Name is empty"); | |
1509 | return; | |
1510 | } | |
1511 | ||
1512 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1513 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1514 | &local_err); | |
1515 | if (local_err) { | |
1516 | error_propagate(errp, local_err); | |
bbe86010 WX |
1517 | return; |
1518 | } else if (ret) { | |
1519 | error_setg(errp, | |
1520 | "Snapshot with name '%s' already exists on device '%s'", | |
1521 | name, device); | |
1522 | return; | |
1523 | } | |
1524 | ||
1525 | /* 3. take the snapshot */ | |
1526 | sn = &state->sn; | |
1527 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1528 | qemu_gettimeofday(&tv); | |
1529 | sn->date_sec = tv.tv_sec; | |
1530 | sn->date_nsec = tv.tv_usec * 1000; | |
1531 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1532 | ||
1533 | ret1 = bdrv_snapshot_create(bs, sn); | |
1534 | if (ret1 < 0) { | |
1535 | error_setg_errno(errp, -ret1, | |
1536 | "Failed to create snapshot '%s' on device '%s'", | |
1537 | name, device); | |
1538 | return; | |
1539 | } | |
1540 | ||
1541 | /* 4. succeed, mark a snapshot is created */ | |
507306cc | 1542 | state->created = true; |
bbe86010 WX |
1543 | } |
1544 | ||
50f43f0f | 1545 | static void internal_snapshot_abort(BlkActionState *common) |
bbe86010 WX |
1546 | { |
1547 | InternalSnapshotState *state = | |
1548 | DO_UPCAST(InternalSnapshotState, common, common); | |
1549 | BlockDriverState *bs = state->bs; | |
1550 | QEMUSnapshotInfo *sn = &state->sn; | |
1551 | Error *local_error = NULL; | |
1552 | ||
507306cc | 1553 | if (!state->created) { |
bbe86010 WX |
1554 | return; |
1555 | } | |
1556 | ||
1557 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
1558 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " | |
1559 | "device '%s' in abort: %s", | |
1560 | sn->id_str, | |
1561 | sn->name, | |
1562 | bdrv_get_device_name(bs), | |
1563 | error_get_pretty(local_error)); | |
1564 | error_free(local_error); | |
1565 | } | |
1566 | } | |
1567 | ||
50f43f0f | 1568 | static void internal_snapshot_clean(BlkActionState *common) |
5d6e96ef SH |
1569 | { |
1570 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, | |
1571 | common, common); | |
1572 | ||
1573 | if (state->aio_context) { | |
507306cc FZ |
1574 | if (state->bs) { |
1575 | bdrv_drained_end(state->bs); | |
1576 | } | |
5d6e96ef SH |
1577 | aio_context_release(state->aio_context); |
1578 | } | |
1579 | } | |
1580 | ||
ba0c86a3 | 1581 | /* external snapshot private data */ |
ba5d6ab6 | 1582 | typedef struct ExternalSnapshotState { |
50f43f0f | 1583 | BlkActionState common; |
8802d1fd JC |
1584 | BlockDriverState *old_bs; |
1585 | BlockDriverState *new_bs; | |
5d6e96ef | 1586 | AioContext *aio_context; |
ba5d6ab6 | 1587 | } ExternalSnapshotState; |
8802d1fd | 1588 | |
50f43f0f | 1589 | static void external_snapshot_prepare(BlkActionState *common, |
9b9877ee WX |
1590 | Error **errp) |
1591 | { | |
43de7e2d AG |
1592 | int flags = 0, ret; |
1593 | QDict *options = NULL; | |
9b9877ee | 1594 | Error *local_err = NULL; |
43de7e2d | 1595 | /* Device and node name of the image to generate the snapshot from */ |
e2a31e87 | 1596 | const char *device; |
0901f67e | 1597 | const char *node_name; |
43de7e2d AG |
1598 | /* Reference to the new image (for 'blockdev-snapshot') */ |
1599 | const char *snapshot_ref; | |
1600 | /* File name of the new image (for 'blockdev-snapshot-sync') */ | |
e2a31e87 | 1601 | const char *new_image_file; |
ba5d6ab6 SH |
1602 | ExternalSnapshotState *state = |
1603 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1604 | TransactionAction *action = common->action; |
9b9877ee | 1605 | |
43de7e2d AG |
1606 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
1607 | * purpose but a different set of parameters */ | |
1608 | switch (action->type) { | |
1609 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: | |
1610 | { | |
1611 | BlockdevSnapshot *s = action->u.blockdev_snapshot; | |
1612 | device = s->node; | |
1613 | node_name = s->node; | |
1614 | new_image_file = NULL; | |
1615 | snapshot_ref = s->overlay; | |
1616 | } | |
1617 | break; | |
1618 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: | |
1619 | { | |
1620 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync; | |
1621 | device = s->has_device ? s->device : NULL; | |
1622 | node_name = s->has_node_name ? s->node_name : NULL; | |
1623 | new_image_file = s->snapshot_file; | |
1624 | snapshot_ref = NULL; | |
1625 | } | |
1626 | break; | |
1627 | default: | |
1628 | g_assert_not_reached(); | |
e2a31e87 WX |
1629 | } |
1630 | ||
1631 | /* start processing */ | |
94d16a64 JS |
1632 | if (action_check_completion_mode(common, errp) < 0) { |
1633 | return; | |
1634 | } | |
1635 | ||
43de7e2d AG |
1636 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
1637 | if (!state->old_bs) { | |
9b9877ee WX |
1638 | return; |
1639 | } | |
1640 | ||
5d6e96ef SH |
1641 | /* Acquire AioContext now so any threads operating on old_bs stop */ |
1642 | state->aio_context = bdrv_get_aio_context(state->old_bs); | |
1643 | aio_context_acquire(state->aio_context); | |
da763e83 | 1644 | bdrv_drained_begin(state->old_bs); |
5d6e96ef | 1645 | |
ba5d6ab6 | 1646 | if (!bdrv_is_inserted(state->old_bs)) { |
c6bd8c70 | 1647 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
9b9877ee WX |
1648 | return; |
1649 | } | |
1650 | ||
3718d8ab FZ |
1651 | if (bdrv_op_is_blocked(state->old_bs, |
1652 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
9b9877ee WX |
1653 | return; |
1654 | } | |
1655 | ||
ba5d6ab6 SH |
1656 | if (!bdrv_is_read_only(state->old_bs)) { |
1657 | if (bdrv_flush(state->old_bs)) { | |
c6bd8c70 | 1658 | error_setg(errp, QERR_IO_ERROR); |
9b9877ee WX |
1659 | return; |
1660 | } | |
1661 | } | |
1662 | ||
212a5a8f | 1663 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
c6bd8c70 | 1664 | error_setg(errp, QERR_FEATURE_DISABLED, "snapshot"); |
f6186f49 BC |
1665 | return; |
1666 | } | |
1667 | ||
43de7e2d AG |
1668 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
1669 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync; | |
1670 | const char *format = s->has_format ? s->format : "qcow2"; | |
1671 | enum NewImageMode mode; | |
1672 | const char *snapshot_node_name = | |
1673 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; | |
9b9877ee | 1674 | |
43de7e2d AG |
1675 | if (node_name && !snapshot_node_name) { |
1676 | error_setg(errp, "New snapshot node name missing"); | |
9b9877ee WX |
1677 | return; |
1678 | } | |
9b9877ee | 1679 | |
43de7e2d AG |
1680 | if (snapshot_node_name && |
1681 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { | |
1682 | error_setg(errp, "New snapshot node name already in use"); | |
1683 | return; | |
1684 | } | |
1685 | ||
1686 | flags = state->old_bs->open_flags; | |
1687 | ||
1688 | /* create new image w/backing file */ | |
1689 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1690 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1691 | bdrv_img_create(new_image_file, format, | |
1692 | state->old_bs->filename, | |
1693 | state->old_bs->drv->format_name, | |
1694 | NULL, -1, flags, &local_err, false); | |
1695 | if (local_err) { | |
1696 | error_propagate(errp, local_err); | |
1697 | return; | |
1698 | } | |
1699 | } | |
1700 | ||
1701 | options = qdict_new(); | |
1702 | if (s->has_snapshot_node_name) { | |
1703 | qdict_put(options, "node-name", | |
1704 | qstring_from_str(snapshot_node_name)); | |
1705 | } | |
1706 | qdict_put(options, "driver", qstring_from_str(format)); | |
1707 | ||
1708 | flags |= BDRV_O_NO_BACKING; | |
0901f67e BC |
1709 | } |
1710 | ||
f67503e5 | 1711 | assert(state->new_bs == NULL); |
43de7e2d AG |
1712 | ret = bdrv_open(&state->new_bs, new_image_file, snapshot_ref, options, |
1713 | flags, errp); | |
f67503e5 | 1714 | /* We will manually add the backing_hd field to the bs later */ |
9b9877ee | 1715 | if (ret != 0) { |
43de7e2d AG |
1716 | return; |
1717 | } | |
1718 | ||
1719 | if (state->new_bs->blk != NULL) { | |
1720 | error_setg(errp, "The snapshot is already in use by %s", | |
1721 | blk_name(state->new_bs->blk)); | |
1722 | return; | |
1723 | } | |
1724 | ||
1725 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, | |
1726 | errp)) { | |
1727 | return; | |
1728 | } | |
1729 | ||
1730 | if (state->new_bs->backing != NULL) { | |
1731 | error_setg(errp, "The snapshot already has a backing image"); | |
08b24cfe AG |
1732 | return; |
1733 | } | |
1734 | ||
1735 | if (!state->new_bs->drv->supports_backing) { | |
1736 | error_setg(errp, "The snapshot does not support backing images"); | |
9b9877ee WX |
1737 | } |
1738 | } | |
1739 | ||
50f43f0f | 1740 | static void external_snapshot_commit(BlkActionState *common) |
3b0047e8 | 1741 | { |
ba5d6ab6 SH |
1742 | ExternalSnapshotState *state = |
1743 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1744 | |
5d6e96ef SH |
1745 | bdrv_set_aio_context(state->new_bs, state->aio_context); |
1746 | ||
ba5d6ab6 SH |
1747 | /* This removes our old bs and adds the new bs */ |
1748 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1749 | /* We don't need (or want) to use the transactional |
1750 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1751 | * don't want to abort all of them if one of them fails the reopen */ | |
dd62f1ca | 1752 | bdrv_reopen(state->old_bs, state->old_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
1753 | NULL); |
1754 | } | |
1755 | ||
50f43f0f | 1756 | static void external_snapshot_abort(BlkActionState *common) |
96b86bf7 | 1757 | { |
ba5d6ab6 SH |
1758 | ExternalSnapshotState *state = |
1759 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1760 | if (state->new_bs) { | |
4f6fd349 | 1761 | bdrv_unref(state->new_bs); |
96b86bf7 | 1762 | } |
da763e83 FZ |
1763 | } |
1764 | ||
50f43f0f | 1765 | static void external_snapshot_clean(BlkActionState *common) |
da763e83 FZ |
1766 | { |
1767 | ExternalSnapshotState *state = | |
1768 | DO_UPCAST(ExternalSnapshotState, common, common); | |
5d6e96ef | 1769 | if (state->aio_context) { |
da763e83 | 1770 | bdrv_drained_end(state->old_bs); |
5d6e96ef SH |
1771 | aio_context_release(state->aio_context); |
1772 | } | |
96b86bf7 WX |
1773 | } |
1774 | ||
3037f364 | 1775 | typedef struct DriveBackupState { |
50f43f0f | 1776 | BlkActionState common; |
3037f364 | 1777 | BlockDriverState *bs; |
5d6e96ef | 1778 | AioContext *aio_context; |
3037f364 SH |
1779 | BlockJob *job; |
1780 | } DriveBackupState; | |
1781 | ||
78f51fde JS |
1782 | static void do_drive_backup(const char *device, const char *target, |
1783 | bool has_format, const char *format, | |
1784 | enum MirrorSyncMode sync, | |
1785 | bool has_mode, enum NewImageMode mode, | |
1786 | bool has_speed, int64_t speed, | |
1787 | bool has_bitmap, const char *bitmap, | |
1788 | bool has_on_source_error, | |
1789 | BlockdevOnError on_source_error, | |
1790 | bool has_on_target_error, | |
1791 | BlockdevOnError on_target_error, | |
1792 | BlockJobTxn *txn, Error **errp); | |
1793 | ||
50f43f0f | 1794 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
3037f364 SH |
1795 | { |
1796 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
a0e8544c | 1797 | BlockBackend *blk; |
3037f364 SH |
1798 | DriveBackup *backup; |
1799 | Error *local_err = NULL; | |
1800 | ||
6a8f9661 EB |
1801 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
1802 | backup = common->action->u.drive_backup; | |
3037f364 | 1803 | |
a0e8544c FZ |
1804 | blk = blk_by_name(backup->device); |
1805 | if (!blk) { | |
75158ebb MA |
1806 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1807 | "Device '%s' not found", backup->device); | |
5d6e96ef SH |
1808 | return; |
1809 | } | |
1810 | ||
1fdd4b7b FZ |
1811 | if (!blk_is_available(blk)) { |
1812 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); | |
1813 | return; | |
1814 | } | |
1815 | ||
5d6e96ef | 1816 | /* AioContext is released in .clean() */ |
5433c24f | 1817 | state->aio_context = blk_get_aio_context(blk); |
5d6e96ef | 1818 | aio_context_acquire(state->aio_context); |
1fdd4b7b FZ |
1819 | bdrv_drained_begin(blk_bs(blk)); |
1820 | state->bs = blk_bs(blk); | |
5d6e96ef | 1821 | |
78f51fde JS |
1822 | do_drive_backup(backup->device, backup->target, |
1823 | backup->has_format, backup->format, | |
1824 | backup->sync, | |
1825 | backup->has_mode, backup->mode, | |
1826 | backup->has_speed, backup->speed, | |
1827 | backup->has_bitmap, backup->bitmap, | |
1828 | backup->has_on_source_error, backup->on_source_error, | |
1829 | backup->has_on_target_error, backup->on_target_error, | |
94d16a64 | 1830 | common->block_job_txn, &local_err); |
84d18f06 | 1831 | if (local_err) { |
3037f364 | 1832 | error_propagate(errp, local_err); |
3037f364 SH |
1833 | return; |
1834 | } | |
1835 | ||
3037f364 SH |
1836 | state->job = state->bs->job; |
1837 | } | |
1838 | ||
50f43f0f | 1839 | static void drive_backup_abort(BlkActionState *common) |
3037f364 SH |
1840 | { |
1841 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1842 | BlockDriverState *bs = state->bs; | |
1843 | ||
1844 | /* Only cancel if it's the job we started */ | |
1845 | if (bs && bs->job && bs->job == state->job) { | |
1846 | block_job_cancel_sync(bs->job); | |
1847 | } | |
1848 | } | |
1849 | ||
50f43f0f | 1850 | static void drive_backup_clean(BlkActionState *common) |
5d6e96ef SH |
1851 | { |
1852 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1853 | ||
1854 | if (state->aio_context) { | |
1fdd4b7b | 1855 | bdrv_drained_end(state->bs); |
5d6e96ef SH |
1856 | aio_context_release(state->aio_context); |
1857 | } | |
1858 | } | |
1859 | ||
bd8baecd | 1860 | typedef struct BlockdevBackupState { |
50f43f0f | 1861 | BlkActionState common; |
bd8baecd FZ |
1862 | BlockDriverState *bs; |
1863 | BlockJob *job; | |
1864 | AioContext *aio_context; | |
1865 | } BlockdevBackupState; | |
1866 | ||
78f51fde JS |
1867 | static void do_blockdev_backup(const char *device, const char *target, |
1868 | enum MirrorSyncMode sync, | |
1869 | bool has_speed, int64_t speed, | |
1870 | bool has_on_source_error, | |
1871 | BlockdevOnError on_source_error, | |
1872 | bool has_on_target_error, | |
1873 | BlockdevOnError on_target_error, | |
1874 | BlockJobTxn *txn, Error **errp); | |
1875 | ||
50f43f0f | 1876 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
bd8baecd FZ |
1877 | { |
1878 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1879 | BlockdevBackup *backup; | |
5433c24f | 1880 | BlockBackend *blk, *target; |
bd8baecd FZ |
1881 | Error *local_err = NULL; |
1882 | ||
6a8f9661 EB |
1883 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
1884 | backup = common->action->u.blockdev_backup; | |
bd8baecd | 1885 | |
a0e8544c FZ |
1886 | blk = blk_by_name(backup->device); |
1887 | if (!blk) { | |
5b347c54 | 1888 | error_setg(errp, "Device '%s' not found", backup->device); |
bd8baecd FZ |
1889 | return; |
1890 | } | |
1891 | ||
ff52bf36 FZ |
1892 | if (!blk_is_available(blk)) { |
1893 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); | |
1894 | return; | |
1895 | } | |
1896 | ||
5433c24f HR |
1897 | target = blk_by_name(backup->target); |
1898 | if (!target) { | |
5b347c54 | 1899 | error_setg(errp, "Device '%s' not found", backup->target); |
bd8baecd FZ |
1900 | return; |
1901 | } | |
1902 | ||
1903 | /* AioContext is released in .clean() */ | |
5433c24f HR |
1904 | state->aio_context = blk_get_aio_context(blk); |
1905 | if (state->aio_context != blk_get_aio_context(target)) { | |
bd8baecd FZ |
1906 | state->aio_context = NULL; |
1907 | error_setg(errp, "Backup between two IO threads is not implemented"); | |
1908 | return; | |
1909 | } | |
1910 | aio_context_acquire(state->aio_context); | |
ff52bf36 FZ |
1911 | state->bs = blk_bs(blk); |
1912 | bdrv_drained_begin(state->bs); | |
bd8baecd | 1913 | |
78f51fde JS |
1914 | do_blockdev_backup(backup->device, backup->target, |
1915 | backup->sync, | |
1916 | backup->has_speed, backup->speed, | |
1917 | backup->has_on_source_error, backup->on_source_error, | |
1918 | backup->has_on_target_error, backup->on_target_error, | |
94d16a64 | 1919 | common->block_job_txn, &local_err); |
bd8baecd FZ |
1920 | if (local_err) { |
1921 | error_propagate(errp, local_err); | |
1922 | return; | |
1923 | } | |
1924 | ||
bd8baecd FZ |
1925 | state->job = state->bs->job; |
1926 | } | |
1927 | ||
50f43f0f | 1928 | static void blockdev_backup_abort(BlkActionState *common) |
bd8baecd FZ |
1929 | { |
1930 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1931 | BlockDriverState *bs = state->bs; | |
1932 | ||
1933 | /* Only cancel if it's the job we started */ | |
1934 | if (bs && bs->job && bs->job == state->job) { | |
1935 | block_job_cancel_sync(bs->job); | |
1936 | } | |
1937 | } | |
1938 | ||
50f43f0f | 1939 | static void blockdev_backup_clean(BlkActionState *common) |
bd8baecd FZ |
1940 | { |
1941 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1942 | ||
1943 | if (state->aio_context) { | |
ff52bf36 | 1944 | bdrv_drained_end(state->bs); |
bd8baecd FZ |
1945 | aio_context_release(state->aio_context); |
1946 | } | |
1947 | } | |
1948 | ||
df9a681d | 1949 | typedef struct BlockDirtyBitmapState { |
50f43f0f | 1950 | BlkActionState common; |
df9a681d FZ |
1951 | BdrvDirtyBitmap *bitmap; |
1952 | BlockDriverState *bs; | |
1953 | AioContext *aio_context; | |
1954 | HBitmap *backup; | |
1955 | bool prepared; | |
1956 | } BlockDirtyBitmapState; | |
1957 | ||
50f43f0f | 1958 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
df9a681d FZ |
1959 | Error **errp) |
1960 | { | |
1961 | Error *local_err = NULL; | |
1962 | BlockDirtyBitmapAdd *action; | |
1963 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
1964 | common, common); | |
1965 | ||
94d16a64 JS |
1966 | if (action_check_completion_mode(common, errp) < 0) { |
1967 | return; | |
1968 | } | |
1969 | ||
50f43f0f | 1970 | action = common->action->u.block_dirty_bitmap_add; |
df9a681d FZ |
1971 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
1972 | qmp_block_dirty_bitmap_add(action->node, action->name, | |
1973 | action->has_granularity, action->granularity, | |
1974 | &local_err); | |
1975 | ||
1976 | if (!local_err) { | |
1977 | state->prepared = true; | |
1978 | } else { | |
1979 | error_propagate(errp, local_err); | |
1980 | } | |
1981 | } | |
1982 | ||
50f43f0f | 1983 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
df9a681d FZ |
1984 | { |
1985 | BlockDirtyBitmapAdd *action; | |
1986 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
1987 | common, common); | |
1988 | ||
50f43f0f | 1989 | action = common->action->u.block_dirty_bitmap_add; |
df9a681d FZ |
1990 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
1991 | * then the node reference and bitmap name must have been valid. | |
1992 | */ | |
1993 | if (state->prepared) { | |
1994 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); | |
1995 | } | |
1996 | } | |
1997 | ||
50f43f0f | 1998 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
df9a681d FZ |
1999 | Error **errp) |
2000 | { | |
2001 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2002 | common, common); | |
2003 | BlockDirtyBitmap *action; | |
2004 | ||
94d16a64 JS |
2005 | if (action_check_completion_mode(common, errp) < 0) { |
2006 | return; | |
2007 | } | |
2008 | ||
50f43f0f | 2009 | action = common->action->u.block_dirty_bitmap_clear; |
df9a681d FZ |
2010 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
2011 | action->name, | |
2012 | &state->bs, | |
2013 | &state->aio_context, | |
2014 | errp); | |
2015 | if (!state->bitmap) { | |
2016 | return; | |
2017 | } | |
2018 | ||
2019 | if (bdrv_dirty_bitmap_frozen(state->bitmap)) { | |
2020 | error_setg(errp, "Cannot modify a frozen bitmap"); | |
2021 | return; | |
2022 | } else if (!bdrv_dirty_bitmap_enabled(state->bitmap)) { | |
2023 | error_setg(errp, "Cannot clear a disabled bitmap"); | |
2024 | return; | |
2025 | } | |
2026 | ||
2027 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); | |
2028 | /* AioContext is released in .clean() */ | |
2029 | } | |
2030 | ||
50f43f0f | 2031 | static void block_dirty_bitmap_clear_abort(BlkActionState *common) |
df9a681d FZ |
2032 | { |
2033 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2034 | common, common); | |
2035 | ||
2036 | bdrv_undo_clear_dirty_bitmap(state->bitmap, state->backup); | |
2037 | } | |
2038 | ||
50f43f0f | 2039 | static void block_dirty_bitmap_clear_commit(BlkActionState *common) |
df9a681d FZ |
2040 | { |
2041 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2042 | common, common); | |
2043 | ||
2044 | hbitmap_free(state->backup); | |
2045 | } | |
2046 | ||
50f43f0f | 2047 | static void block_dirty_bitmap_clear_clean(BlkActionState *common) |
df9a681d FZ |
2048 | { |
2049 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2050 | common, common); | |
2051 | ||
2052 | if (state->aio_context) { | |
2053 | aio_context_release(state->aio_context); | |
2054 | } | |
2055 | } | |
2056 | ||
50f43f0f | 2057 | static void abort_prepare(BlkActionState *common, Error **errp) |
78b18b78 SH |
2058 | { |
2059 | error_setg(errp, "Transaction aborted using Abort action"); | |
2060 | } | |
2061 | ||
50f43f0f | 2062 | static void abort_commit(BlkActionState *common) |
78b18b78 | 2063 | { |
dfc6f865 | 2064 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
2065 | } |
2066 | ||
50f43f0f | 2067 | static const BlkActionOps actions[] = { |
43de7e2d AG |
2068 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
2069 | .instance_size = sizeof(ExternalSnapshotState), | |
2070 | .prepare = external_snapshot_prepare, | |
2071 | .commit = external_snapshot_commit, | |
2072 | .abort = external_snapshot_abort, | |
2073 | }, | |
c8a83e85 | 2074 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 2075 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
2076 | .prepare = external_snapshot_prepare, |
2077 | .commit = external_snapshot_commit, | |
2078 | .abort = external_snapshot_abort, | |
da763e83 | 2079 | .clean = external_snapshot_clean, |
ba0c86a3 | 2080 | }, |
3037f364 SH |
2081 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
2082 | .instance_size = sizeof(DriveBackupState), | |
2083 | .prepare = drive_backup_prepare, | |
2084 | .abort = drive_backup_abort, | |
5d6e96ef | 2085 | .clean = drive_backup_clean, |
3037f364 | 2086 | }, |
bd8baecd FZ |
2087 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
2088 | .instance_size = sizeof(BlockdevBackupState), | |
2089 | .prepare = blockdev_backup_prepare, | |
2090 | .abort = blockdev_backup_abort, | |
2091 | .clean = blockdev_backup_clean, | |
2092 | }, | |
78b18b78 | 2093 | [TRANSACTION_ACTION_KIND_ABORT] = { |
50f43f0f | 2094 | .instance_size = sizeof(BlkActionState), |
78b18b78 SH |
2095 | .prepare = abort_prepare, |
2096 | .commit = abort_commit, | |
2097 | }, | |
bbe86010 WX |
2098 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
2099 | .instance_size = sizeof(InternalSnapshotState), | |
2100 | .prepare = internal_snapshot_prepare, | |
2101 | .abort = internal_snapshot_abort, | |
5d6e96ef | 2102 | .clean = internal_snapshot_clean, |
bbe86010 | 2103 | }, |
df9a681d FZ |
2104 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
2105 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2106 | .prepare = block_dirty_bitmap_add_prepare, | |
2107 | .abort = block_dirty_bitmap_add_abort, | |
2108 | }, | |
2109 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { | |
2110 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2111 | .prepare = block_dirty_bitmap_clear_prepare, | |
2112 | .commit = block_dirty_bitmap_clear_commit, | |
2113 | .abort = block_dirty_bitmap_clear_abort, | |
2114 | .clean = block_dirty_bitmap_clear_clean, | |
2115 | } | |
ba0c86a3 WX |
2116 | }; |
2117 | ||
94d16a64 JS |
2118 | /** |
2119 | * Allocate a TransactionProperties structure if necessary, and fill | |
2120 | * that structure with desired defaults if they are unset. | |
2121 | */ | |
2122 | static TransactionProperties *get_transaction_properties( | |
2123 | TransactionProperties *props) | |
2124 | { | |
2125 | if (!props) { | |
2126 | props = g_new0(TransactionProperties, 1); | |
2127 | } | |
2128 | ||
2129 | if (!props->has_completion_mode) { | |
2130 | props->has_completion_mode = true; | |
2131 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; | |
2132 | } | |
2133 | ||
2134 | return props; | |
2135 | } | |
2136 | ||
8802d1fd | 2137 | /* |
b756b9ce SH |
2138 | * 'Atomic' group operations. The operations are performed as a set, and if |
2139 | * any fail then we roll back all operations in the group. | |
8802d1fd | 2140 | */ |
94d16a64 JS |
2141 | void qmp_transaction(TransactionActionList *dev_list, |
2142 | bool has_props, | |
2143 | struct TransactionProperties *props, | |
2144 | Error **errp) | |
8802d1fd | 2145 | { |
c8a83e85 | 2146 | TransactionActionList *dev_entry = dev_list; |
94d16a64 | 2147 | BlockJobTxn *block_job_txn = NULL; |
50f43f0f | 2148 | BlkActionState *state, *next; |
43e17041 | 2149 | Error *local_err = NULL; |
8802d1fd | 2150 | |
50f43f0f | 2151 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states; |
8802d1fd JC |
2152 | QSIMPLEQ_INIT(&snap_bdrv_states); |
2153 | ||
94d16a64 JS |
2154 | /* Does this transaction get canceled as a group on failure? |
2155 | * If not, we don't really need to make a BlockJobTxn. | |
2156 | */ | |
2157 | props = get_transaction_properties(props); | |
2158 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
2159 | block_job_txn = block_job_txn_new(); | |
2160 | } | |
2161 | ||
b756b9ce | 2162 | /* drain all i/o before any operations */ |
8802d1fd JC |
2163 | bdrv_drain_all(); |
2164 | ||
b756b9ce | 2165 | /* We don't do anything in this loop that commits us to the operations */ |
8802d1fd | 2166 | while (NULL != dev_entry) { |
c8a83e85 | 2167 | TransactionAction *dev_info = NULL; |
50f43f0f | 2168 | const BlkActionOps *ops; |
52e7c241 | 2169 | |
8802d1fd JC |
2170 | dev_info = dev_entry->value; |
2171 | dev_entry = dev_entry->next; | |
2172 | ||
6a8f9661 | 2173 | assert(dev_info->type < ARRAY_SIZE(actions)); |
ba0c86a3 | 2174 | |
6a8f9661 | 2175 | ops = &actions[dev_info->type]; |
aa3fe714 HR |
2176 | assert(ops->instance_size > 0); |
2177 | ||
ba5d6ab6 SH |
2178 | state = g_malloc0(ops->instance_size); |
2179 | state->ops = ops; | |
2180 | state->action = dev_info; | |
94d16a64 JS |
2181 | state->block_job_txn = block_job_txn; |
2182 | state->txn_props = props; | |
ba5d6ab6 | 2183 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
8802d1fd | 2184 | |
ba5d6ab6 | 2185 | state->ops->prepare(state, &local_err); |
84d18f06 | 2186 | if (local_err) { |
ba0c86a3 WX |
2187 | error_propagate(errp, local_err); |
2188 | goto delete_and_fail; | |
8802d1fd | 2189 | } |
8802d1fd JC |
2190 | } |
2191 | ||
ba5d6ab6 | 2192 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
2193 | if (state->ops->commit) { |
2194 | state->ops->commit(state); | |
2195 | } | |
8802d1fd JC |
2196 | } |
2197 | ||
2198 | /* success */ | |
2199 | goto exit; | |
2200 | ||
2201 | delete_and_fail: | |
b756b9ce | 2202 | /* failure, and it is all-or-none; roll back all operations */ |
ba5d6ab6 SH |
2203 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
2204 | if (state->ops->abort) { | |
2205 | state->ops->abort(state); | |
ba0c86a3 | 2206 | } |
8802d1fd JC |
2207 | } |
2208 | exit: | |
ba5d6ab6 SH |
2209 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
2210 | if (state->ops->clean) { | |
2211 | state->ops->clean(state); | |
ba0c86a3 | 2212 | } |
ba5d6ab6 | 2213 | g_free(state); |
8802d1fd | 2214 | } |
94d16a64 JS |
2215 | if (!has_props) { |
2216 | qapi_free_TransactionProperties(props); | |
2217 | } | |
2218 | block_job_txn_unref(block_job_txn); | |
8802d1fd JC |
2219 | } |
2220 | ||
c245b6a3 | 2221 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 | 2222 | { |
38f54bd1 | 2223 | Error *local_err = NULL; |
666daa68 | 2224 | |
38f54bd1 HR |
2225 | qmp_blockdev_open_tray(device, has_force, force, &local_err); |
2226 | if (local_err) { | |
2227 | error_propagate(errp, local_err); | |
c245b6a3 | 2228 | return; |
92d48558 LC |
2229 | } |
2230 | ||
38f54bd1 | 2231 | qmp_blockdev_remove_medium(device, errp); |
666daa68 MA |
2232 | } |
2233 | ||
12d3ba82 BC |
2234 | void qmp_block_passwd(bool has_device, const char *device, |
2235 | bool has_node_name, const char *node_name, | |
2236 | const char *password, Error **errp) | |
666daa68 | 2237 | { |
12d3ba82 | 2238 | Error *local_err = NULL; |
666daa68 | 2239 | BlockDriverState *bs; |
e3442099 | 2240 | AioContext *aio_context; |
666daa68 | 2241 | |
12d3ba82 BC |
2242 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
2243 | has_node_name ? node_name : NULL, | |
2244 | &local_err); | |
84d18f06 | 2245 | if (local_err) { |
12d3ba82 | 2246 | error_propagate(errp, local_err); |
a4dea8a9 | 2247 | return; |
666daa68 MA |
2248 | } |
2249 | ||
e3442099 SH |
2250 | aio_context = bdrv_get_aio_context(bs); |
2251 | aio_context_acquire(aio_context); | |
2252 | ||
4d2855a3 | 2253 | bdrv_add_key(bs, password, errp); |
e3442099 | 2254 | |
e3442099 | 2255 | aio_context_release(aio_context); |
666daa68 MA |
2256 | } |
2257 | ||
7d8a9f71 HR |
2258 | void qmp_blockdev_open_tray(const char *device, bool has_force, bool force, |
2259 | Error **errp) | |
2260 | { | |
2261 | BlockBackend *blk; | |
2262 | bool locked; | |
2263 | ||
2264 | if (!has_force) { | |
2265 | force = false; | |
2266 | } | |
2267 | ||
2268 | blk = blk_by_name(device); | |
2269 | if (!blk) { | |
2270 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2271 | "Device '%s' not found", device); | |
2272 | return; | |
2273 | } | |
2274 | ||
2275 | if (!blk_dev_has_removable_media(blk)) { | |
2276 | error_setg(errp, "Device '%s' is not removable", device); | |
2277 | return; | |
2278 | } | |
2279 | ||
2280 | if (blk_dev_is_tray_open(blk)) { | |
2281 | return; | |
2282 | } | |
2283 | ||
2284 | locked = blk_dev_is_medium_locked(blk); | |
2285 | if (locked) { | |
2286 | blk_dev_eject_request(blk, force); | |
2287 | } | |
2288 | ||
2289 | if (!locked || force) { | |
2290 | blk_dev_change_media_cb(blk, false); | |
2291 | } | |
2292 | } | |
2293 | ||
abaaf59d HR |
2294 | void qmp_blockdev_close_tray(const char *device, Error **errp) |
2295 | { | |
2296 | BlockBackend *blk; | |
2297 | ||
2298 | blk = blk_by_name(device); | |
2299 | if (!blk) { | |
2300 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2301 | "Device '%s' not found", device); | |
2302 | return; | |
2303 | } | |
2304 | ||
2305 | if (!blk_dev_has_removable_media(blk)) { | |
2306 | error_setg(errp, "Device '%s' is not removable", device); | |
2307 | return; | |
2308 | } | |
2309 | ||
2310 | if (!blk_dev_is_tray_open(blk)) { | |
2311 | return; | |
2312 | } | |
2313 | ||
2314 | blk_dev_change_media_cb(blk, true); | |
2315 | } | |
2316 | ||
2814f672 HR |
2317 | void qmp_blockdev_remove_medium(const char *device, Error **errp) |
2318 | { | |
2319 | BlockBackend *blk; | |
2320 | BlockDriverState *bs; | |
2321 | AioContext *aio_context; | |
2322 | bool has_device; | |
2323 | ||
2324 | blk = blk_by_name(device); | |
2325 | if (!blk) { | |
2326 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2327 | "Device '%s' not found", device); | |
2328 | return; | |
2329 | } | |
2330 | ||
2331 | /* For BBs without a device, we can exchange the BDS tree at will */ | |
2332 | has_device = blk_get_attached_dev(blk); | |
2333 | ||
2334 | if (has_device && !blk_dev_has_removable_media(blk)) { | |
2335 | error_setg(errp, "Device '%s' is not removable", device); | |
2336 | return; | |
2337 | } | |
2338 | ||
2339 | if (has_device && !blk_dev_is_tray_open(blk)) { | |
2340 | error_setg(errp, "Tray of device '%s' is not open", device); | |
2341 | return; | |
2342 | } | |
2343 | ||
2344 | bs = blk_bs(blk); | |
2345 | if (!bs) { | |
2346 | return; | |
2347 | } | |
2348 | ||
2349 | aio_context = bdrv_get_aio_context(bs); | |
2350 | aio_context_acquire(aio_context); | |
2351 | ||
2352 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { | |
2353 | goto out; | |
2354 | } | |
2355 | ||
2356 | /* This follows the convention established by bdrv_make_anon() */ | |
2357 | if (bs->device_list.tqe_prev) { | |
2358 | QTAILQ_REMOVE(&bdrv_states, bs, device_list); | |
2359 | bs->device_list.tqe_prev = NULL; | |
2360 | } | |
2361 | ||
2362 | blk_remove_bs(blk); | |
2363 | ||
2364 | out: | |
2365 | aio_context_release(aio_context); | |
2366 | } | |
2367 | ||
d1299882 HR |
2368 | static void qmp_blockdev_insert_anon_medium(const char *device, |
2369 | BlockDriverState *bs, Error **errp) | |
2370 | { | |
2371 | BlockBackend *blk; | |
2372 | bool has_device; | |
2373 | ||
2374 | blk = blk_by_name(device); | |
2375 | if (!blk) { | |
2376 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2377 | "Device '%s' not found", device); | |
2378 | return; | |
2379 | } | |
2380 | ||
2381 | /* For BBs without a device, we can exchange the BDS tree at will */ | |
2382 | has_device = blk_get_attached_dev(blk); | |
2383 | ||
2384 | if (has_device && !blk_dev_has_removable_media(blk)) { | |
2385 | error_setg(errp, "Device '%s' is not removable", device); | |
2386 | return; | |
2387 | } | |
2388 | ||
2389 | if (has_device && !blk_dev_is_tray_open(blk)) { | |
2390 | error_setg(errp, "Tray of device '%s' is not open", device); | |
2391 | return; | |
2392 | } | |
2393 | ||
2394 | if (blk_bs(blk)) { | |
2395 | error_setg(errp, "There already is a medium in device '%s'", device); | |
2396 | return; | |
2397 | } | |
2398 | ||
2399 | blk_insert_bs(blk, bs); | |
2400 | ||
2401 | QTAILQ_INSERT_TAIL(&bdrv_states, bs, device_list); | |
2402 | } | |
2403 | ||
2404 | void qmp_blockdev_insert_medium(const char *device, const char *node_name, | |
2405 | Error **errp) | |
2406 | { | |
2407 | BlockDriverState *bs; | |
2408 | ||
2409 | bs = bdrv_find_node(node_name); | |
2410 | if (!bs) { | |
2411 | error_setg(errp, "Node '%s' not found", node_name); | |
2412 | return; | |
2413 | } | |
2414 | ||
2415 | if (bs->blk) { | |
2416 | error_setg(errp, "Node '%s' is already in use by '%s'", node_name, | |
2417 | blk_name(bs->blk)); | |
2418 | return; | |
2419 | } | |
2420 | ||
2421 | qmp_blockdev_insert_anon_medium(device, bs, errp); | |
2422 | } | |
2423 | ||
24fb4133 HR |
2424 | void qmp_blockdev_change_medium(const char *device, const char *filename, |
2425 | bool has_format, const char *format, | |
39ff43d9 HR |
2426 | bool has_read_only, |
2427 | BlockdevChangeReadOnlyMode read_only, | |
24fb4133 | 2428 | Error **errp) |
de2c6c05 HR |
2429 | { |
2430 | BlockBackend *blk; | |
2431 | BlockDriverState *medium_bs = NULL; | |
2432 | int bdrv_flags, ret; | |
2433 | QDict *options = NULL; | |
2434 | Error *err = NULL; | |
2435 | ||
2436 | blk = blk_by_name(device); | |
2437 | if (!blk) { | |
2438 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2439 | "Device '%s' not found", device); | |
2440 | goto fail; | |
2441 | } | |
2442 | ||
2443 | if (blk_bs(blk)) { | |
2444 | blk_update_root_state(blk); | |
2445 | } | |
2446 | ||
2447 | bdrv_flags = blk_get_open_flags_from_root_state(blk); | |
2448 | ||
39ff43d9 HR |
2449 | if (!has_read_only) { |
2450 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; | |
2451 | } | |
2452 | ||
2453 | switch (read_only) { | |
2454 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: | |
2455 | break; | |
2456 | ||
2457 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: | |
2458 | bdrv_flags &= ~BDRV_O_RDWR; | |
2459 | break; | |
2460 | ||
2461 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: | |
2462 | bdrv_flags |= BDRV_O_RDWR; | |
2463 | break; | |
2464 | ||
2465 | default: | |
2466 | abort(); | |
2467 | } | |
2468 | ||
24fb4133 | 2469 | if (has_format) { |
de2c6c05 HR |
2470 | options = qdict_new(); |
2471 | qdict_put(options, "driver", qstring_from_str(format)); | |
2472 | } | |
2473 | ||
2474 | assert(!medium_bs); | |
2475 | ret = bdrv_open(&medium_bs, filename, NULL, options, bdrv_flags, errp); | |
2476 | if (ret < 0) { | |
2477 | goto fail; | |
2478 | } | |
2479 | ||
2480 | blk_apply_root_state(blk, medium_bs); | |
2481 | ||
2482 | bdrv_add_key(medium_bs, NULL, &err); | |
2483 | if (err) { | |
2484 | error_propagate(errp, err); | |
2485 | goto fail; | |
2486 | } | |
2487 | ||
2488 | qmp_blockdev_open_tray(device, false, false, &err); | |
2489 | if (err) { | |
2490 | error_propagate(errp, err); | |
2491 | goto fail; | |
2492 | } | |
2493 | ||
2494 | qmp_blockdev_remove_medium(device, &err); | |
2495 | if (err) { | |
2496 | error_propagate(errp, err); | |
2497 | goto fail; | |
2498 | } | |
2499 | ||
2500 | qmp_blockdev_insert_anon_medium(device, medium_bs, &err); | |
2501 | if (err) { | |
2502 | error_propagate(errp, err); | |
2503 | goto fail; | |
2504 | } | |
2505 | ||
2506 | qmp_blockdev_close_tray(device, errp); | |
2507 | ||
2508 | fail: | |
2509 | /* If the medium has been inserted, the device has its own reference, so | |
2510 | * ours must be relinquished; and if it has not been inserted successfully, | |
2511 | * the reference must be relinquished anyway */ | |
2512 | bdrv_unref(medium_bs); | |
2513 | } | |
2514 | ||
727f005e | 2515 | /* throttling disk I/O limits */ |
80047da5 | 2516 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
2517 | int64_t bps_wr, |
2518 | int64_t iops, | |
2519 | int64_t iops_rd, | |
2520 | int64_t iops_wr, | |
2521 | bool has_bps_max, | |
2522 | int64_t bps_max, | |
2523 | bool has_bps_rd_max, | |
2524 | int64_t bps_rd_max, | |
2525 | bool has_bps_wr_max, | |
2526 | int64_t bps_wr_max, | |
2527 | bool has_iops_max, | |
2528 | int64_t iops_max, | |
2529 | bool has_iops_rd_max, | |
2530 | int64_t iops_rd_max, | |
2531 | bool has_iops_wr_max, | |
2024c1df BC |
2532 | int64_t iops_wr_max, |
2533 | bool has_iops_size, | |
76f4afb4 AG |
2534 | int64_t iops_size, |
2535 | bool has_group, | |
2536 | const char *group, Error **errp) | |
727f005e | 2537 | { |
cc0681c4 | 2538 | ThrottleConfig cfg; |
727f005e | 2539 | BlockDriverState *bs; |
a0e8544c | 2540 | BlockBackend *blk; |
b15446fd | 2541 | AioContext *aio_context; |
727f005e | 2542 | |
a0e8544c FZ |
2543 | blk = blk_by_name(device); |
2544 | if (!blk) { | |
75158ebb MA |
2545 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
2546 | "Device '%s' not found", device); | |
80047da5 | 2547 | return; |
727f005e | 2548 | } |
5433c24f HR |
2549 | |
2550 | aio_context = blk_get_aio_context(blk); | |
2551 | aio_context_acquire(aio_context); | |
2552 | ||
a0e8544c | 2553 | bs = blk_bs(blk); |
5433c24f HR |
2554 | if (!bs) { |
2555 | error_setg(errp, "Device '%s' has no medium", device); | |
2556 | goto out; | |
2557 | } | |
727f005e | 2558 | |
cc0681c4 BC |
2559 | memset(&cfg, 0, sizeof(cfg)); |
2560 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
2561 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
2562 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
2563 | ||
2564 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
2565 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
2566 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
2567 | ||
3e9fab69 BC |
2568 | if (has_bps_max) { |
2569 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
2570 | } | |
2571 | if (has_bps_rd_max) { | |
2572 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
2573 | } | |
2574 | if (has_bps_wr_max) { | |
2575 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
2576 | } | |
2577 | if (has_iops_max) { | |
2578 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
2579 | } | |
2580 | if (has_iops_rd_max) { | |
2581 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
2582 | } | |
2583 | if (has_iops_wr_max) { | |
2584 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
2585 | } | |
727f005e | 2586 | |
2024c1df BC |
2587 | if (has_iops_size) { |
2588 | cfg.op_size = iops_size; | |
2589 | } | |
cc0681c4 BC |
2590 | |
2591 | if (!check_throttle_config(&cfg, errp)) { | |
5433c24f | 2592 | goto out; |
727f005e ZYW |
2593 | } |
2594 | ||
76f4afb4 AG |
2595 | if (throttle_enabled(&cfg)) { |
2596 | /* Enable I/O limits if they're not enabled yet, otherwise | |
2597 | * just update the throttling group. */ | |
a0d64a61 | 2598 | if (!bs->throttle_state) { |
76f4afb4 AG |
2599 | bdrv_io_limits_enable(bs, has_group ? group : device); |
2600 | } else if (has_group) { | |
2601 | bdrv_io_limits_update_group(bs, group); | |
2602 | } | |
2603 | /* Set the new throttling configuration */ | |
cc0681c4 | 2604 | bdrv_set_io_limits(bs, &cfg); |
a0d64a61 | 2605 | } else if (bs->throttle_state) { |
76f4afb4 AG |
2606 | /* If all throttling settings are set to 0, disable I/O limits */ |
2607 | bdrv_io_limits_disable(bs); | |
727f005e | 2608 | } |
b15446fd | 2609 | |
5433c24f | 2610 | out: |
b15446fd | 2611 | aio_context_release(aio_context); |
727f005e ZYW |
2612 | } |
2613 | ||
341ebc2f JS |
2614 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
2615 | bool has_granularity, uint32_t granularity, | |
2616 | Error **errp) | |
2617 | { | |
2618 | AioContext *aio_context; | |
2619 | BlockDriverState *bs; | |
2620 | ||
2621 | if (!name || name[0] == '\0') { | |
2622 | error_setg(errp, "Bitmap name cannot be empty"); | |
2623 | return; | |
2624 | } | |
2625 | ||
2626 | bs = bdrv_lookup_bs(node, node, errp); | |
2627 | if (!bs) { | |
2628 | return; | |
2629 | } | |
2630 | ||
2631 | aio_context = bdrv_get_aio_context(bs); | |
2632 | aio_context_acquire(aio_context); | |
2633 | ||
2634 | if (has_granularity) { | |
2635 | if (granularity < 512 || !is_power_of_2(granularity)) { | |
2636 | error_setg(errp, "Granularity must be power of 2 " | |
2637 | "and at least 512"); | |
2638 | goto out; | |
2639 | } | |
2640 | } else { | |
2641 | /* Default to cluster size, if available: */ | |
2642 | granularity = bdrv_get_default_bitmap_granularity(bs); | |
2643 | } | |
2644 | ||
2645 | bdrv_create_dirty_bitmap(bs, granularity, name, errp); | |
2646 | ||
2647 | out: | |
2648 | aio_context_release(aio_context); | |
2649 | } | |
2650 | ||
2651 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, | |
2652 | Error **errp) | |
2653 | { | |
2654 | AioContext *aio_context; | |
2655 | BlockDriverState *bs; | |
2656 | BdrvDirtyBitmap *bitmap; | |
2657 | ||
2658 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); | |
2659 | if (!bitmap || !bs) { | |
2660 | return; | |
2661 | } | |
2662 | ||
9bd2b08f JS |
2663 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
2664 | error_setg(errp, | |
2665 | "Bitmap '%s' is currently frozen and cannot be removed", | |
2666 | name); | |
2667 | goto out; | |
2668 | } | |
20dca810 | 2669 | bdrv_dirty_bitmap_make_anon(bitmap); |
341ebc2f JS |
2670 | bdrv_release_dirty_bitmap(bs, bitmap); |
2671 | ||
9bd2b08f | 2672 | out: |
341ebc2f JS |
2673 | aio_context_release(aio_context); |
2674 | } | |
2675 | ||
e74e6b78 JS |
2676 | /** |
2677 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap | |
2678 | * immediately after a full backup operation. | |
2679 | */ | |
2680 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, | |
2681 | Error **errp) | |
2682 | { | |
2683 | AioContext *aio_context; | |
2684 | BdrvDirtyBitmap *bitmap; | |
2685 | BlockDriverState *bs; | |
2686 | ||
2687 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); | |
2688 | if (!bitmap || !bs) { | |
2689 | return; | |
2690 | } | |
2691 | ||
2692 | if (bdrv_dirty_bitmap_frozen(bitmap)) { | |
2693 | error_setg(errp, | |
2694 | "Bitmap '%s' is currently frozen and cannot be modified", | |
2695 | name); | |
2696 | goto out; | |
2697 | } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { | |
2698 | error_setg(errp, | |
2699 | "Bitmap '%s' is currently disabled and cannot be cleared", | |
2700 | name); | |
2701 | goto out; | |
2702 | } | |
2703 | ||
df9a681d | 2704 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
e74e6b78 JS |
2705 | |
2706 | out: | |
2707 | aio_context_release(aio_context); | |
2708 | } | |
2709 | ||
072ebe6b | 2710 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
9063f814 RH |
2711 | { |
2712 | const char *id = qdict_get_str(qdict, "id"); | |
7e7d56d9 | 2713 | BlockBackend *blk; |
9063f814 | 2714 | BlockDriverState *bs; |
8ad4202b | 2715 | AioContext *aio_context; |
3718d8ab | 2716 | Error *local_err = NULL; |
9063f814 | 2717 | |
7e7d56d9 MA |
2718 | blk = blk_by_name(id); |
2719 | if (!blk) { | |
b1422f20 | 2720 | error_report("Device '%s' not found", id); |
072ebe6b | 2721 | return; |
9063f814 | 2722 | } |
8ad4202b | 2723 | |
26f8b3a8 | 2724 | if (!blk_legacy_dinfo(blk)) { |
48f364dd MA |
2725 | error_report("Deleting device added with blockdev-add" |
2726 | " is not supported"); | |
072ebe6b | 2727 | return; |
48f364dd MA |
2728 | } |
2729 | ||
5433c24f | 2730 | aio_context = blk_get_aio_context(blk); |
8ad4202b SH |
2731 | aio_context_acquire(aio_context); |
2732 | ||
5433c24f HR |
2733 | bs = blk_bs(blk); |
2734 | if (bs) { | |
2735 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { | |
2736 | error_report_err(local_err); | |
2737 | aio_context_release(aio_context); | |
2738 | return; | |
2739 | } | |
9063f814 | 2740 | |
5433c24f HR |
2741 | bdrv_close(bs); |
2742 | } | |
9063f814 | 2743 | |
fa879d62 | 2744 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
2745 | * then we need to make the drive anonymous until the device |
2746 | * can be removed. If this is a drive with no device backing | |
2747 | * then we can just get rid of the block driver state right here. | |
2748 | */ | |
a7f53e26 | 2749 | if (blk_get_attached_dev(blk)) { |
3e5a50d6 | 2750 | blk_hide_on_behalf_of_hmp_drive_del(blk); |
293c51a6 | 2751 | /* Further I/O must not pause the guest */ |
373340b2 HR |
2752 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
2753 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 2754 | } else { |
b9fe8a7a | 2755 | blk_unref(blk); |
9063f814 RH |
2756 | } |
2757 | ||
8ad4202b | 2758 | aio_context_release(aio_context); |
9063f814 | 2759 | } |
6d4a2b3a | 2760 | |
3b1dbd11 BC |
2761 | void qmp_block_resize(bool has_device, const char *device, |
2762 | bool has_node_name, const char *node_name, | |
2763 | int64_t size, Error **errp) | |
6d4a2b3a | 2764 | { |
3b1dbd11 | 2765 | Error *local_err = NULL; |
6d4a2b3a | 2766 | BlockDriverState *bs; |
927e0e76 | 2767 | AioContext *aio_context; |
8732901e | 2768 | int ret; |
6d4a2b3a | 2769 | |
3b1dbd11 BC |
2770 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
2771 | has_node_name ? node_name : NULL, | |
2772 | &local_err); | |
84d18f06 | 2773 | if (local_err) { |
3b1dbd11 BC |
2774 | error_propagate(errp, local_err); |
2775 | return; | |
2776 | } | |
2777 | ||
927e0e76 SH |
2778 | aio_context = bdrv_get_aio_context(bs); |
2779 | aio_context_acquire(aio_context); | |
2780 | ||
3b1dbd11 | 2781 | if (!bdrv_is_first_non_filter(bs)) { |
c6bd8c70 | 2782 | error_setg(errp, QERR_FEATURE_DISABLED, "resize"); |
927e0e76 | 2783 | goto out; |
6d4a2b3a CH |
2784 | } |
2785 | ||
2786 | if (size < 0) { | |
c6bd8c70 | 2787 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 2788 | goto out; |
6d4a2b3a CH |
2789 | } |
2790 | ||
9c75e168 | 2791 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
c6bd8c70 | 2792 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
927e0e76 | 2793 | goto out; |
9c75e168 JC |
2794 | } |
2795 | ||
92b7a08d PL |
2796 | /* complete all in-flight operations before resizing the device */ |
2797 | bdrv_drain_all(); | |
2798 | ||
8732901e KW |
2799 | ret = bdrv_truncate(bs, size); |
2800 | switch (ret) { | |
939a1cc3 SH |
2801 | case 0: |
2802 | break; | |
2803 | case -ENOMEDIUM: | |
c6bd8c70 | 2804 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
939a1cc3 SH |
2805 | break; |
2806 | case -ENOTSUP: | |
c6bd8c70 | 2807 | error_setg(errp, QERR_UNSUPPORTED); |
939a1cc3 SH |
2808 | break; |
2809 | case -EACCES: | |
81e5f78a | 2810 | error_setg(errp, "Device '%s' is read only", device); |
939a1cc3 SH |
2811 | break; |
2812 | case -EBUSY: | |
c6bd8c70 | 2813 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
939a1cc3 SH |
2814 | break; |
2815 | default: | |
8732901e | 2816 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 2817 | break; |
6d4a2b3a | 2818 | } |
927e0e76 SH |
2819 | |
2820 | out: | |
2821 | aio_context_release(aio_context); | |
6d4a2b3a | 2822 | } |
12bd451f | 2823 | |
9abf2dba | 2824 | static void block_job_cb(void *opaque, int ret) |
12bd451f | 2825 | { |
723c5d93 SH |
2826 | /* Note that this function may be executed from another AioContext besides |
2827 | * the QEMU main loop. If you need to access anything that assumes the | |
2828 | * QEMU global mutex, use a BH or introduce a mutex. | |
2829 | */ | |
2830 | ||
12bd451f | 2831 | BlockDriverState *bs = opaque; |
bcada37b | 2832 | const char *msg = NULL; |
12bd451f | 2833 | |
9abf2dba | 2834 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
2835 | |
2836 | assert(bs->job); | |
bcada37b | 2837 | |
12bd451f | 2838 | if (ret < 0) { |
bcada37b | 2839 | msg = strerror(-ret); |
12bd451f SH |
2840 | } |
2841 | ||
370521a1 | 2842 | if (block_job_is_cancelled(bs->job)) { |
bcada37b | 2843 | block_job_event_cancelled(bs->job); |
370521a1 | 2844 | } else { |
bcada37b | 2845 | block_job_event_completed(bs->job, msg); |
370521a1 | 2846 | } |
12bd451f SH |
2847 | } |
2848 | ||
13d8cc51 JC |
2849 | void qmp_block_stream(const char *device, |
2850 | bool has_base, const char *base, | |
2851 | bool has_backing_file, const char *backing_file, | |
2852 | bool has_speed, int64_t speed, | |
1d809098 PB |
2853 | bool has_on_error, BlockdevOnError on_error, |
2854 | Error **errp) | |
12bd451f | 2855 | { |
a0e8544c | 2856 | BlockBackend *blk; |
12bd451f | 2857 | BlockDriverState *bs; |
c8c3080f | 2858 | BlockDriverState *base_bs = NULL; |
f3e69beb | 2859 | AioContext *aio_context; |
fd7f8c65 | 2860 | Error *local_err = NULL; |
13d8cc51 | 2861 | const char *base_name = NULL; |
12bd451f | 2862 | |
1d809098 PB |
2863 | if (!has_on_error) { |
2864 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
2865 | } | |
2866 | ||
a0e8544c FZ |
2867 | blk = blk_by_name(device); |
2868 | if (!blk) { | |
75158ebb MA |
2869 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
2870 | "Device '%s' not found", device); | |
12bd451f SH |
2871 | return; |
2872 | } | |
2873 | ||
5433c24f | 2874 | aio_context = blk_get_aio_context(blk); |
f3e69beb SH |
2875 | aio_context_acquire(aio_context); |
2876 | ||
5433c24f HR |
2877 | if (!blk_is_available(blk)) { |
2878 | error_setg(errp, "Device '%s' has no medium", device); | |
2879 | goto out; | |
2880 | } | |
2881 | bs = blk_bs(blk); | |
2882 | ||
628ff683 | 2883 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
f3e69beb | 2884 | goto out; |
628ff683 FZ |
2885 | } |
2886 | ||
13d8cc51 | 2887 | if (has_base) { |
c8c3080f MT |
2888 | base_bs = bdrv_find_backing_image(bs, base); |
2889 | if (base_bs == NULL) { | |
c6bd8c70 | 2890 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
f3e69beb | 2891 | goto out; |
c8c3080f | 2892 | } |
f3e69beb | 2893 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
13d8cc51 | 2894 | base_name = base; |
12bd451f SH |
2895 | } |
2896 | ||
13d8cc51 JC |
2897 | /* if we are streaming the entire chain, the result will have no backing |
2898 | * file, and specifying one is therefore an error */ | |
2899 | if (base_bs == NULL && has_backing_file) { | |
2900 | error_setg(errp, "backing file specified, but streaming the " | |
2901 | "entire chain"); | |
f3e69beb | 2902 | goto out; |
13d8cc51 JC |
2903 | } |
2904 | ||
2905 | /* backing_file string overrides base bs filename */ | |
2906 | base_name = has_backing_file ? backing_file : base_name; | |
2907 | ||
2908 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, | |
1d809098 | 2909 | on_error, block_job_cb, bs, &local_err); |
84d18f06 | 2910 | if (local_err) { |
fd7f8c65 | 2911 | error_propagate(errp, local_err); |
f3e69beb | 2912 | goto out; |
12bd451f SH |
2913 | } |
2914 | ||
2915 | trace_qmp_block_stream(bs, bs->job); | |
f3e69beb SH |
2916 | |
2917 | out: | |
2918 | aio_context_release(aio_context); | |
12bd451f | 2919 | } |
2d47c6e9 | 2920 | |
ed61fc10 | 2921 | void qmp_block_commit(const char *device, |
7676e2c5 JC |
2922 | bool has_base, const char *base, |
2923 | bool has_top, const char *top, | |
54e26900 | 2924 | bool has_backing_file, const char *backing_file, |
ed61fc10 JC |
2925 | bool has_speed, int64_t speed, |
2926 | Error **errp) | |
2927 | { | |
a0e8544c | 2928 | BlockBackend *blk; |
ed61fc10 JC |
2929 | BlockDriverState *bs; |
2930 | BlockDriverState *base_bs, *top_bs; | |
9e85cd5c | 2931 | AioContext *aio_context; |
ed61fc10 JC |
2932 | Error *local_err = NULL; |
2933 | /* This will be part of the QMP command, if/when the | |
2934 | * BlockdevOnError change for blkmirror makes it in | |
2935 | */ | |
92aa5c6d | 2936 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 | 2937 | |
54504663 HR |
2938 | if (!has_speed) { |
2939 | speed = 0; | |
2940 | } | |
2941 | ||
7676e2c5 JC |
2942 | /* Important Note: |
2943 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
2944 | * live commit feature versions; for this to work, we must make sure to | |
2945 | * perform the device lookup before any generic errors that may occur in a | |
2946 | * scenario in which all optional arguments are omitted. */ | |
a0e8544c FZ |
2947 | blk = blk_by_name(device); |
2948 | if (!blk) { | |
75158ebb MA |
2949 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
2950 | "Device '%s' not found", device); | |
ed61fc10 | 2951 | return; |
628ff683 FZ |
2952 | } |
2953 | ||
5433c24f | 2954 | aio_context = blk_get_aio_context(blk); |
9e85cd5c SH |
2955 | aio_context_acquire(aio_context); |
2956 | ||
5433c24f HR |
2957 | if (!blk_is_available(blk)) { |
2958 | error_setg(errp, "Device '%s' has no medium", device); | |
2959 | goto out; | |
2960 | } | |
2961 | bs = blk_bs(blk); | |
2962 | ||
bb00021d | 2963 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
9e85cd5c | 2964 | goto out; |
ed61fc10 | 2965 | } |
ed61fc10 JC |
2966 | |
2967 | /* default top_bs is the active layer */ | |
2968 | top_bs = bs; | |
2969 | ||
7676e2c5 | 2970 | if (has_top && top) { |
ed61fc10 JC |
2971 | if (strcmp(bs->filename, top) != 0) { |
2972 | top_bs = bdrv_find_backing_image(bs, top); | |
2973 | } | |
2974 | } | |
2975 | ||
2976 | if (top_bs == NULL) { | |
2977 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
9e85cd5c | 2978 | goto out; |
ed61fc10 JC |
2979 | } |
2980 | ||
9e85cd5c SH |
2981 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
2982 | ||
d5208c45 JC |
2983 | if (has_base && base) { |
2984 | base_bs = bdrv_find_backing_image(top_bs, base); | |
2985 | } else { | |
2986 | base_bs = bdrv_find_base(top_bs); | |
2987 | } | |
2988 | ||
2989 | if (base_bs == NULL) { | |
c6bd8c70 | 2990 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
9e85cd5c | 2991 | goto out; |
d5208c45 JC |
2992 | } |
2993 | ||
9e85cd5c SH |
2994 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
2995 | ||
bb00021d FZ |
2996 | if (bdrv_op_is_blocked(base_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
2997 | goto out; | |
2998 | } | |
2999 | ||
7676e2c5 JC |
3000 | /* Do not allow attempts to commit an image into itself */ |
3001 | if (top_bs == base_bs) { | |
3002 | error_setg(errp, "cannot commit an image into itself"); | |
9e85cd5c | 3003 | goto out; |
7676e2c5 JC |
3004 | } |
3005 | ||
20a63d2c | 3006 | if (top_bs == bs) { |
54e26900 JC |
3007 | if (has_backing_file) { |
3008 | error_setg(errp, "'backing-file' specified," | |
3009 | " but 'top' is the active layer"); | |
9e85cd5c | 3010 | goto out; |
54e26900 | 3011 | } |
20a63d2c FZ |
3012 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
3013 | bs, &local_err); | |
3014 | } else { | |
3015 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, | |
54e26900 | 3016 | has_backing_file ? backing_file : NULL, &local_err); |
20a63d2c | 3017 | } |
ed61fc10 JC |
3018 | if (local_err != NULL) { |
3019 | error_propagate(errp, local_err); | |
9e85cd5c | 3020 | goto out; |
ed61fc10 | 3021 | } |
9e85cd5c SH |
3022 | |
3023 | out: | |
3024 | aio_context_release(aio_context); | |
ed61fc10 JC |
3025 | } |
3026 | ||
78f51fde JS |
3027 | static void do_drive_backup(const char *device, const char *target, |
3028 | bool has_format, const char *format, | |
3029 | enum MirrorSyncMode sync, | |
3030 | bool has_mode, enum NewImageMode mode, | |
3031 | bool has_speed, int64_t speed, | |
3032 | bool has_bitmap, const char *bitmap, | |
3033 | bool has_on_source_error, | |
3034 | BlockdevOnError on_source_error, | |
3035 | bool has_on_target_error, | |
3036 | BlockdevOnError on_target_error, | |
3037 | BlockJobTxn *txn, Error **errp) | |
99a9addf | 3038 | { |
a0e8544c | 3039 | BlockBackend *blk; |
99a9addf SH |
3040 | BlockDriverState *bs; |
3041 | BlockDriverState *target_bs; | |
fc5d3f84 | 3042 | BlockDriverState *source = NULL; |
d58d8453 | 3043 | BdrvDirtyBitmap *bmap = NULL; |
761731b1 | 3044 | AioContext *aio_context; |
e6641719 | 3045 | QDict *options = NULL; |
99a9addf SH |
3046 | Error *local_err = NULL; |
3047 | int flags; | |
3048 | int64_t size; | |
3049 | int ret; | |
3050 | ||
3051 | if (!has_speed) { | |
3052 | speed = 0; | |
3053 | } | |
3054 | if (!has_on_source_error) { | |
3055 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3056 | } | |
3057 | if (!has_on_target_error) { | |
3058 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3059 | } | |
3060 | if (!has_mode) { | |
3061 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
3062 | } | |
3063 | ||
a0e8544c FZ |
3064 | blk = blk_by_name(device); |
3065 | if (!blk) { | |
75158ebb MA |
3066 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3067 | "Device '%s' not found", device); | |
99a9addf SH |
3068 | return; |
3069 | } | |
3070 | ||
5433c24f | 3071 | aio_context = blk_get_aio_context(blk); |
761731b1 SH |
3072 | aio_context_acquire(aio_context); |
3073 | ||
c29c1dd3 FZ |
3074 | /* Although backup_run has this check too, we need to use bs->drv below, so |
3075 | * do an early check redundantly. */ | |
5433c24f | 3076 | if (!blk_is_available(blk)) { |
c6bd8c70 | 3077 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
761731b1 | 3078 | goto out; |
99a9addf | 3079 | } |
5433c24f | 3080 | bs = blk_bs(blk); |
99a9addf SH |
3081 | |
3082 | if (!has_format) { | |
3083 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
3084 | } | |
99a9addf | 3085 | |
c29c1dd3 | 3086 | /* Early check to avoid creating target */ |
3718d8ab | 3087 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
761731b1 | 3088 | goto out; |
99a9addf SH |
3089 | } |
3090 | ||
3091 | flags = bs->open_flags | BDRV_O_RDWR; | |
3092 | ||
fc5d3f84 IM |
3093 | /* See if we have a backing HD we can use to create our new image |
3094 | * on top of. */ | |
3095 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
760e0063 | 3096 | source = backing_bs(bs); |
fc5d3f84 IM |
3097 | if (!source) { |
3098 | sync = MIRROR_SYNC_MODE_FULL; | |
3099 | } | |
3100 | } | |
3101 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
3102 | source = bs; | |
3103 | } | |
3104 | ||
99a9addf SH |
3105 | size = bdrv_getlength(bs); |
3106 | if (size < 0) { | |
3107 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
761731b1 | 3108 | goto out; |
99a9addf SH |
3109 | } |
3110 | ||
3111 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
e6641719 | 3112 | assert(format); |
fc5d3f84 IM |
3113 | if (source) { |
3114 | bdrv_img_create(target, format, source->filename, | |
3115 | source->drv->format_name, NULL, | |
3116 | size, flags, &local_err, false); | |
3117 | } else { | |
3118 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
3119 | size, flags, &local_err, false); | |
3120 | } | |
99a9addf SH |
3121 | } |
3122 | ||
84d18f06 | 3123 | if (local_err) { |
99a9addf | 3124 | error_propagate(errp, local_err); |
761731b1 | 3125 | goto out; |
99a9addf SH |
3126 | } |
3127 | ||
e6641719 HR |
3128 | if (format) { |
3129 | options = qdict_new(); | |
3130 | qdict_put(options, "driver", qstring_from_str(format)); | |
3131 | } | |
3132 | ||
f67503e5 | 3133 | target_bs = NULL; |
6ebf9aa2 | 3134 | ret = bdrv_open(&target_bs, target, NULL, options, flags, &local_err); |
99a9addf | 3135 | if (ret < 0) { |
34b5d2c6 | 3136 | error_propagate(errp, local_err); |
761731b1 | 3137 | goto out; |
99a9addf SH |
3138 | } |
3139 | ||
761731b1 SH |
3140 | bdrv_set_aio_context(target_bs, aio_context); |
3141 | ||
d58d8453 JS |
3142 | if (has_bitmap) { |
3143 | bmap = bdrv_find_dirty_bitmap(bs, bitmap); | |
3144 | if (!bmap) { | |
3145 | error_setg(errp, "Bitmap '%s' could not be found", bitmap); | |
3146 | goto out; | |
3147 | } | |
3148 | } | |
3149 | ||
3150 | backup_start(bs, target_bs, speed, sync, bmap, | |
3151 | on_source_error, on_target_error, | |
78f51fde | 3152 | block_job_cb, bs, txn, &local_err); |
99a9addf | 3153 | if (local_err != NULL) { |
4f6fd349 | 3154 | bdrv_unref(target_bs); |
99a9addf | 3155 | error_propagate(errp, local_err); |
761731b1 | 3156 | goto out; |
99a9addf | 3157 | } |
761731b1 SH |
3158 | |
3159 | out: | |
3160 | aio_context_release(aio_context); | |
99a9addf SH |
3161 | } |
3162 | ||
78f51fde JS |
3163 | void qmp_drive_backup(const char *device, const char *target, |
3164 | bool has_format, const char *format, | |
3165 | enum MirrorSyncMode sync, | |
3166 | bool has_mode, enum NewImageMode mode, | |
3167 | bool has_speed, int64_t speed, | |
3168 | bool has_bitmap, const char *bitmap, | |
3169 | bool has_on_source_error, BlockdevOnError on_source_error, | |
3170 | bool has_on_target_error, BlockdevOnError on_target_error, | |
3171 | Error **errp) | |
3172 | { | |
3173 | return do_drive_backup(device, target, has_format, format, sync, | |
3174 | has_mode, mode, has_speed, speed, | |
3175 | has_bitmap, bitmap, | |
3176 | has_on_source_error, on_source_error, | |
3177 | has_on_target_error, on_target_error, | |
3178 | NULL, errp); | |
3179 | } | |
3180 | ||
c13163fb BC |
3181 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
3182 | { | |
d5a8ee60 | 3183 | return bdrv_named_nodes_list(errp); |
c13163fb BC |
3184 | } |
3185 | ||
78f51fde | 3186 | void do_blockdev_backup(const char *device, const char *target, |
c29c1dd3 FZ |
3187 | enum MirrorSyncMode sync, |
3188 | bool has_speed, int64_t speed, | |
3189 | bool has_on_source_error, | |
3190 | BlockdevOnError on_source_error, | |
3191 | bool has_on_target_error, | |
3192 | BlockdevOnError on_target_error, | |
78f51fde | 3193 | BlockJobTxn *txn, Error **errp) |
c29c1dd3 | 3194 | { |
5433c24f | 3195 | BlockBackend *blk, *target_blk; |
c29c1dd3 FZ |
3196 | BlockDriverState *bs; |
3197 | BlockDriverState *target_bs; | |
3198 | Error *local_err = NULL; | |
3199 | AioContext *aio_context; | |
3200 | ||
3201 | if (!has_speed) { | |
3202 | speed = 0; | |
3203 | } | |
3204 | if (!has_on_source_error) { | |
3205 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3206 | } | |
3207 | if (!has_on_target_error) { | |
3208 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3209 | } | |
3210 | ||
a0e8544c FZ |
3211 | blk = blk_by_name(device); |
3212 | if (!blk) { | |
5b347c54 | 3213 | error_setg(errp, "Device '%s' not found", device); |
c29c1dd3 FZ |
3214 | return; |
3215 | } | |
3216 | ||
5433c24f | 3217 | aio_context = blk_get_aio_context(blk); |
c29c1dd3 FZ |
3218 | aio_context_acquire(aio_context); |
3219 | ||
5433c24f HR |
3220 | if (!blk_is_available(blk)) { |
3221 | error_setg(errp, "Device '%s' has no medium", device); | |
3222 | goto out; | |
3223 | } | |
3224 | bs = blk_bs(blk); | |
3225 | ||
3226 | target_blk = blk_by_name(target); | |
3227 | if (!target_blk) { | |
5b347c54 | 3228 | error_setg(errp, "Device '%s' not found", target); |
c29c1dd3 FZ |
3229 | goto out; |
3230 | } | |
5433c24f HR |
3231 | |
3232 | if (!blk_is_available(target_blk)) { | |
3233 | error_setg(errp, "Device '%s' has no medium", target); | |
3234 | goto out; | |
3235 | } | |
3236 | target_bs = blk_bs(target_blk); | |
c29c1dd3 FZ |
3237 | |
3238 | bdrv_ref(target_bs); | |
3239 | bdrv_set_aio_context(target_bs, aio_context); | |
d58d8453 | 3240 | backup_start(bs, target_bs, speed, sync, NULL, on_source_error, |
78f51fde | 3241 | on_target_error, block_job_cb, bs, txn, &local_err); |
c29c1dd3 FZ |
3242 | if (local_err != NULL) { |
3243 | bdrv_unref(target_bs); | |
3244 | error_propagate(errp, local_err); | |
3245 | } | |
3246 | out: | |
3247 | aio_context_release(aio_context); | |
3248 | } | |
3249 | ||
78f51fde JS |
3250 | void qmp_blockdev_backup(const char *device, const char *target, |
3251 | enum MirrorSyncMode sync, | |
3252 | bool has_speed, int64_t speed, | |
3253 | bool has_on_source_error, | |
3254 | BlockdevOnError on_source_error, | |
3255 | bool has_on_target_error, | |
3256 | BlockdevOnError on_target_error, | |
3257 | Error **errp) | |
3258 | { | |
3259 | do_blockdev_backup(device, target, sync, has_speed, speed, | |
3260 | has_on_source_error, on_source_error, | |
3261 | has_on_target_error, on_target_error, | |
3262 | NULL, errp); | |
3263 | } | |
3264 | ||
d9b902db PB |
3265 | void qmp_drive_mirror(const char *device, const char *target, |
3266 | bool has_format, const char *format, | |
4c828dc6 | 3267 | bool has_node_name, const char *node_name, |
09158f00 | 3268 | bool has_replaces, const char *replaces, |
d9b902db PB |
3269 | enum MirrorSyncMode sync, |
3270 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 3271 | bool has_speed, int64_t speed, |
eee13dfe | 3272 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 3273 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
3274 | bool has_on_source_error, BlockdevOnError on_source_error, |
3275 | bool has_on_target_error, BlockdevOnError on_target_error, | |
0fc9f8ea | 3276 | bool has_unmap, bool unmap, |
b952b558 | 3277 | Error **errp) |
d9b902db | 3278 | { |
a0e8544c | 3279 | BlockBackend *blk; |
d9b902db PB |
3280 | BlockDriverState *bs; |
3281 | BlockDriverState *source, *target_bs; | |
5a7e7a0b | 3282 | AioContext *aio_context; |
d9b902db | 3283 | Error *local_err = NULL; |
e6641719 | 3284 | QDict *options; |
d9b902db | 3285 | int flags; |
ac3c5d83 | 3286 | int64_t size; |
d9b902db PB |
3287 | int ret; |
3288 | ||
3289 | if (!has_speed) { | |
3290 | speed = 0; | |
3291 | } | |
b952b558 PB |
3292 | if (!has_on_source_error) { |
3293 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3294 | } | |
3295 | if (!has_on_target_error) { | |
3296 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3297 | } | |
d9b902db PB |
3298 | if (!has_mode) { |
3299 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
3300 | } | |
eee13dfe PB |
3301 | if (!has_granularity) { |
3302 | granularity = 0; | |
3303 | } | |
08e4ed6c | 3304 | if (!has_buf_size) { |
48ac0a4d | 3305 | buf_size = 0; |
08e4ed6c | 3306 | } |
0fc9f8ea FZ |
3307 | if (!has_unmap) { |
3308 | unmap = true; | |
3309 | } | |
08e4ed6c | 3310 | |
eee13dfe | 3311 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
c6bd8c70 MA |
3312 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3313 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
3314 | return; |
3315 | } | |
3316 | if (granularity & (granularity - 1)) { | |
c6bd8c70 MA |
3317 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3318 | "power of 2"); | |
eee13dfe PB |
3319 | return; |
3320 | } | |
d9b902db | 3321 | |
a0e8544c FZ |
3322 | blk = blk_by_name(device); |
3323 | if (!blk) { | |
75158ebb MA |
3324 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3325 | "Device '%s' not found", device); | |
d9b902db PB |
3326 | return; |
3327 | } | |
3328 | ||
5433c24f | 3329 | aio_context = blk_get_aio_context(blk); |
5a7e7a0b SH |
3330 | aio_context_acquire(aio_context); |
3331 | ||
5433c24f | 3332 | if (!blk_is_available(blk)) { |
c6bd8c70 | 3333 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
5a7e7a0b | 3334 | goto out; |
d9b902db | 3335 | } |
5433c24f | 3336 | bs = blk_bs(blk); |
d9b902db PB |
3337 | |
3338 | if (!has_format) { | |
3339 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
3340 | } | |
d9b902db | 3341 | |
3718d8ab | 3342 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) { |
5a7e7a0b | 3343 | goto out; |
d9b902db PB |
3344 | } |
3345 | ||
3346 | flags = bs->open_flags | BDRV_O_RDWR; | |
760e0063 | 3347 | source = backing_bs(bs); |
d9b902db PB |
3348 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { |
3349 | sync = MIRROR_SYNC_MODE_FULL; | |
3350 | } | |
117e0c82 HR |
3351 | if (sync == MIRROR_SYNC_MODE_NONE) { |
3352 | source = bs; | |
3353 | } | |
d9b902db | 3354 | |
ac3c5d83 SH |
3355 | size = bdrv_getlength(bs); |
3356 | if (size < 0) { | |
3357 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
5a7e7a0b | 3358 | goto out; |
ac3c5d83 SH |
3359 | } |
3360 | ||
09158f00 BC |
3361 | if (has_replaces) { |
3362 | BlockDriverState *to_replace_bs; | |
5a7e7a0b SH |
3363 | AioContext *replace_aio_context; |
3364 | int64_t replace_size; | |
09158f00 BC |
3365 | |
3366 | if (!has_node_name) { | |
3367 | error_setg(errp, "a node-name must be provided when replacing a" | |
3368 | " named node of the graph"); | |
5a7e7a0b | 3369 | goto out; |
09158f00 BC |
3370 | } |
3371 | ||
e12f3784 | 3372 | to_replace_bs = check_to_replace_node(bs, replaces, &local_err); |
09158f00 BC |
3373 | |
3374 | if (!to_replace_bs) { | |
3375 | error_propagate(errp, local_err); | |
5a7e7a0b | 3376 | goto out; |
09158f00 BC |
3377 | } |
3378 | ||
5a7e7a0b SH |
3379 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
3380 | aio_context_acquire(replace_aio_context); | |
3381 | replace_size = bdrv_getlength(to_replace_bs); | |
3382 | aio_context_release(replace_aio_context); | |
3383 | ||
3384 | if (size != replace_size) { | |
09158f00 BC |
3385 | error_setg(errp, "cannot replace image with a mirror image of " |
3386 | "different size"); | |
5a7e7a0b | 3387 | goto out; |
09158f00 BC |
3388 | } |
3389 | } | |
3390 | ||
14526864 HR |
3391 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
3392 | && mode != NEW_IMAGE_MODE_EXISTING) | |
3393 | { | |
d9b902db | 3394 | /* create new image w/o backing file */ |
e6641719 | 3395 | assert(format); |
cf8f2426 | 3396 | bdrv_img_create(target, format, |
f382d43a | 3397 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
3398 | } else { |
3399 | switch (mode) { | |
3400 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
3401 | break; |
3402 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
3403 | /* create new image with backing file */ | |
cf8f2426 LC |
3404 | bdrv_img_create(target, format, |
3405 | source->filename, | |
3406 | source->drv->format_name, | |
f382d43a | 3407 | NULL, size, flags, &local_err, false); |
d9b902db PB |
3408 | break; |
3409 | default: | |
3410 | abort(); | |
3411 | } | |
3412 | } | |
3413 | ||
84d18f06 | 3414 | if (local_err) { |
cf8f2426 | 3415 | error_propagate(errp, local_err); |
5a7e7a0b | 3416 | goto out; |
d9b902db PB |
3417 | } |
3418 | ||
e6641719 | 3419 | options = qdict_new(); |
4c828dc6 | 3420 | if (has_node_name) { |
4c828dc6 BC |
3421 | qdict_put(options, "node-name", qstring_from_str(node_name)); |
3422 | } | |
e6641719 HR |
3423 | if (format) { |
3424 | qdict_put(options, "driver", qstring_from_str(format)); | |
3425 | } | |
4c828dc6 | 3426 | |
b812f671 PB |
3427 | /* Mirroring takes care of copy-on-write using the source's backing |
3428 | * file. | |
3429 | */ | |
f67503e5 | 3430 | target_bs = NULL; |
4c828dc6 | 3431 | ret = bdrv_open(&target_bs, target, NULL, options, |
6ebf9aa2 | 3432 | flags | BDRV_O_NO_BACKING, &local_err); |
d9b902db | 3433 | if (ret < 0) { |
34b5d2c6 | 3434 | error_propagate(errp, local_err); |
5a7e7a0b | 3435 | goto out; |
d9b902db PB |
3436 | } |
3437 | ||
5a7e7a0b SH |
3438 | bdrv_set_aio_context(target_bs, aio_context); |
3439 | ||
09158f00 BC |
3440 | /* pass the node name to replace to mirror start since it's loose coupling |
3441 | * and will allow to check whether the node still exist at mirror completion | |
3442 | */ | |
3443 | mirror_start(bs, target_bs, | |
3444 | has_replaces ? replaces : NULL, | |
3445 | speed, granularity, buf_size, sync, | |
eee13dfe | 3446 | on_source_error, on_target_error, |
0fc9f8ea | 3447 | unmap, |
b952b558 | 3448 | block_job_cb, bs, &local_err); |
d9b902db | 3449 | if (local_err != NULL) { |
4f6fd349 | 3450 | bdrv_unref(target_bs); |
d9b902db | 3451 | error_propagate(errp, local_err); |
5a7e7a0b | 3452 | goto out; |
d9b902db | 3453 | } |
5a7e7a0b SH |
3454 | |
3455 | out: | |
3456 | aio_context_release(aio_context); | |
d9b902db PB |
3457 | } |
3458 | ||
3d948cdf | 3459 | /* Get the block job for a given device name and acquire its AioContext */ |
24d6bffe MA |
3460 | static BlockJob *find_block_job(const char *device, AioContext **aio_context, |
3461 | Error **errp) | |
2d47c6e9 | 3462 | { |
a0e8544c | 3463 | BlockBackend *blk; |
2d47c6e9 SH |
3464 | BlockDriverState *bs; |
3465 | ||
5433c24f HR |
3466 | *aio_context = NULL; |
3467 | ||
a0e8544c FZ |
3468 | blk = blk_by_name(device); |
3469 | if (!blk) { | |
3d948cdf SH |
3470 | goto notfound; |
3471 | } | |
3472 | ||
5433c24f | 3473 | *aio_context = blk_get_aio_context(blk); |
3d948cdf SH |
3474 | aio_context_acquire(*aio_context); |
3475 | ||
5433c24f HR |
3476 | if (!blk_is_available(blk)) { |
3477 | goto notfound; | |
3478 | } | |
3479 | bs = blk_bs(blk); | |
3480 | ||
3d948cdf | 3481 | if (!bs->job) { |
3d948cdf | 3482 | goto notfound; |
2d47c6e9 | 3483 | } |
3d948cdf | 3484 | |
2d47c6e9 | 3485 | return bs->job; |
3d948cdf SH |
3486 | |
3487 | notfound: | |
2e3a0266 MA |
3488 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
3489 | "No active block job on device '%s'", device); | |
5433c24f HR |
3490 | if (*aio_context) { |
3491 | aio_context_release(*aio_context); | |
3492 | *aio_context = NULL; | |
3493 | } | |
3d948cdf | 3494 | return NULL; |
2d47c6e9 SH |
3495 | } |
3496 | ||
882ec7ce | 3497 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 | 3498 | { |
3d948cdf | 3499 | AioContext *aio_context; |
24d6bffe | 3500 | BlockJob *job = find_block_job(device, &aio_context, errp); |
2d47c6e9 SH |
3501 | |
3502 | if (!job) { | |
2d47c6e9 SH |
3503 | return; |
3504 | } | |
3505 | ||
882ec7ce | 3506 | block_job_set_speed(job, speed, errp); |
3d948cdf | 3507 | aio_context_release(aio_context); |
2d47c6e9 | 3508 | } |
370521a1 | 3509 | |
6e37fb81 PB |
3510 | void qmp_block_job_cancel(const char *device, |
3511 | bool has_force, bool force, Error **errp) | |
370521a1 | 3512 | { |
3d948cdf | 3513 | AioContext *aio_context; |
24d6bffe | 3514 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3515 | |
370521a1 | 3516 | if (!job) { |
370521a1 SH |
3517 | return; |
3518 | } | |
3d948cdf SH |
3519 | |
3520 | if (!has_force) { | |
3521 | force = false; | |
3522 | } | |
3523 | ||
751ebd76 | 3524 | if (job->user_paused && !force) { |
f231b88d CR |
3525 | error_setg(errp, "The block job for device '%s' is currently paused", |
3526 | device); | |
3d948cdf | 3527 | goto out; |
8acc72a4 | 3528 | } |
370521a1 SH |
3529 | |
3530 | trace_qmp_block_job_cancel(job); | |
3531 | block_job_cancel(job); | |
3d948cdf SH |
3532 | out: |
3533 | aio_context_release(aio_context); | |
370521a1 | 3534 | } |
fb5458cd | 3535 | |
6e37fb81 PB |
3536 | void qmp_block_job_pause(const char *device, Error **errp) |
3537 | { | |
3d948cdf | 3538 | AioContext *aio_context; |
24d6bffe | 3539 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3540 | |
751ebd76 | 3541 | if (!job || job->user_paused) { |
6e37fb81 PB |
3542 | return; |
3543 | } | |
3544 | ||
751ebd76 | 3545 | job->user_paused = true; |
6e37fb81 PB |
3546 | trace_qmp_block_job_pause(job); |
3547 | block_job_pause(job); | |
3d948cdf | 3548 | aio_context_release(aio_context); |
6e37fb81 PB |
3549 | } |
3550 | ||
3551 | void qmp_block_job_resume(const char *device, Error **errp) | |
3552 | { | |
3d948cdf | 3553 | AioContext *aio_context; |
24d6bffe | 3554 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3555 | |
751ebd76 | 3556 | if (!job || !job->user_paused) { |
6e37fb81 PB |
3557 | return; |
3558 | } | |
3559 | ||
751ebd76 | 3560 | job->user_paused = false; |
6e37fb81 PB |
3561 | trace_qmp_block_job_resume(job); |
3562 | block_job_resume(job); | |
3d948cdf | 3563 | aio_context_release(aio_context); |
6e37fb81 PB |
3564 | } |
3565 | ||
aeae883b PB |
3566 | void qmp_block_job_complete(const char *device, Error **errp) |
3567 | { | |
3d948cdf | 3568 | AioContext *aio_context; |
24d6bffe | 3569 | BlockJob *job = find_block_job(device, &aio_context, errp); |
aeae883b PB |
3570 | |
3571 | if (!job) { | |
aeae883b PB |
3572 | return; |
3573 | } | |
3574 | ||
3575 | trace_qmp_block_job_complete(job); | |
3576 | block_job_complete(job, errp); | |
3d948cdf | 3577 | aio_context_release(aio_context); |
aeae883b PB |
3578 | } |
3579 | ||
fa40e656 JC |
3580 | void qmp_change_backing_file(const char *device, |
3581 | const char *image_node_name, | |
3582 | const char *backing_file, | |
3583 | Error **errp) | |
3584 | { | |
a0e8544c | 3585 | BlockBackend *blk; |
fa40e656 | 3586 | BlockDriverState *bs = NULL; |
729962f6 | 3587 | AioContext *aio_context; |
fa40e656 JC |
3588 | BlockDriverState *image_bs = NULL; |
3589 | Error *local_err = NULL; | |
3590 | bool ro; | |
3591 | int open_flags; | |
3592 | int ret; | |
3593 | ||
a0e8544c FZ |
3594 | blk = blk_by_name(device); |
3595 | if (!blk) { | |
75158ebb MA |
3596 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3597 | "Device '%s' not found", device); | |
fa40e656 JC |
3598 | return; |
3599 | } | |
3600 | ||
5433c24f | 3601 | aio_context = blk_get_aio_context(blk); |
729962f6 SH |
3602 | aio_context_acquire(aio_context); |
3603 | ||
5433c24f HR |
3604 | if (!blk_is_available(blk)) { |
3605 | error_setg(errp, "Device '%s' has no medium", device); | |
3606 | goto out; | |
3607 | } | |
3608 | bs = blk_bs(blk); | |
3609 | ||
fa40e656 JC |
3610 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
3611 | if (local_err) { | |
3612 | error_propagate(errp, local_err); | |
729962f6 | 3613 | goto out; |
fa40e656 JC |
3614 | } |
3615 | ||
3616 | if (!image_bs) { | |
3617 | error_setg(errp, "image file not found"); | |
729962f6 | 3618 | goto out; |
fa40e656 JC |
3619 | } |
3620 | ||
3621 | if (bdrv_find_base(image_bs) == image_bs) { | |
3622 | error_setg(errp, "not allowing backing file change on an image " | |
3623 | "without a backing file"); | |
729962f6 | 3624 | goto out; |
fa40e656 JC |
3625 | } |
3626 | ||
3627 | /* even though we are not necessarily operating on bs, we need it to | |
3628 | * determine if block ops are currently prohibited on the chain */ | |
3629 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
729962f6 | 3630 | goto out; |
fa40e656 JC |
3631 | } |
3632 | ||
3633 | /* final sanity check */ | |
3634 | if (!bdrv_chain_contains(bs, image_bs)) { | |
3635 | error_setg(errp, "'%s' and image file are not in the same chain", | |
3636 | device); | |
729962f6 | 3637 | goto out; |
fa40e656 JC |
3638 | } |
3639 | ||
3640 | /* if not r/w, reopen to make r/w */ | |
3641 | open_flags = image_bs->open_flags; | |
3642 | ro = bdrv_is_read_only(image_bs); | |
3643 | ||
3644 | if (ro) { | |
3645 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); | |
3646 | if (local_err) { | |
3647 | error_propagate(errp, local_err); | |
729962f6 | 3648 | goto out; |
fa40e656 JC |
3649 | } |
3650 | } | |
3651 | ||
3652 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
3653 | image_bs->drv ? image_bs->drv->format_name : ""); | |
3654 | ||
3655 | if (ret < 0) { | |
3656 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
3657 | backing_file); | |
3658 | /* don't exit here, so we can try to restore open flags if | |
3659 | * appropriate */ | |
3660 | } | |
3661 | ||
3662 | if (ro) { | |
3663 | bdrv_reopen(image_bs, open_flags, &local_err); | |
3664 | if (local_err) { | |
3665 | error_propagate(errp, local_err); /* will preserve prior errp */ | |
3666 | } | |
3667 | } | |
729962f6 SH |
3668 | |
3669 | out: | |
3670 | aio_context_release(aio_context); | |
fa40e656 JC |
3671 | } |
3672 | ||
d26c9a15 KW |
3673 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
3674 | { | |
3675 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
be4b67bc HR |
3676 | BlockDriverState *bs; |
3677 | BlockBackend *blk = NULL; | |
d26c9a15 KW |
3678 | QObject *obj; |
3679 | QDict *qdict; | |
d26c9a15 KW |
3680 | Error *local_err = NULL; |
3681 | ||
60e19e06 | 3682 | /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with |
d26c9a15 | 3683 | * cache.direct=false instead of silently switching to aio=threads, except |
60e19e06 | 3684 | * when called from drive_new(). |
d26c9a15 KW |
3685 | * |
3686 | * For now, simply forbidding the combination for all drivers will do. */ | |
3687 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
c6e0bd9b KW |
3688 | bool direct = options->has_cache && |
3689 | options->cache->has_direct && | |
3690 | options->cache->direct; | |
3691 | if (!direct) { | |
d26c9a15 KW |
3692 | error_setg(errp, "aio=native requires cache.direct=true"); |
3693 | goto fail; | |
3694 | } | |
3695 | } | |
3696 | ||
3697 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), | |
3698 | &options, NULL, &local_err); | |
84d18f06 | 3699 | if (local_err) { |
d26c9a15 KW |
3700 | error_propagate(errp, local_err); |
3701 | goto fail; | |
3702 | } | |
3703 | ||
3704 | obj = qmp_output_get_qobject(ov); | |
3705 | qdict = qobject_to_qdict(obj); | |
3706 | ||
3707 | qdict_flatten(qdict); | |
3708 | ||
be4b67bc HR |
3709 | if (options->has_id) { |
3710 | blk = blockdev_init(NULL, qdict, &local_err); | |
3711 | if (local_err) { | |
3712 | error_propagate(errp, local_err); | |
3713 | goto fail; | |
3714 | } | |
3715 | ||
3716 | bs = blk_bs(blk); | |
3717 | } else { | |
be4b67bc HR |
3718 | if (!qdict_get_try_str(qdict, "node-name")) { |
3719 | error_setg(errp, "'id' and/or 'node-name' need to be specified for " | |
3720 | "the root node"); | |
3721 | goto fail; | |
3722 | } | |
3723 | ||
bd745e23 HR |
3724 | bs = bds_tree_init(qdict, errp); |
3725 | if (!bs) { | |
be4b67bc HR |
3726 | goto fail; |
3727 | } | |
d26c9a15 KW |
3728 | } |
3729 | ||
be4b67bc HR |
3730 | if (bs && bdrv_key_required(bs)) { |
3731 | if (blk) { | |
3732 | blk_unref(blk); | |
3733 | } else { | |
3734 | bdrv_unref(bs); | |
3735 | } | |
8ae8e904 KW |
3736 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
3737 | goto fail; | |
3738 | } | |
3739 | ||
d26c9a15 KW |
3740 | fail: |
3741 | qmp_output_visitor_cleanup(ov); | |
3742 | } | |
3743 | ||
81b936ae AG |
3744 | void qmp_x_blockdev_del(bool has_id, const char *id, |
3745 | bool has_node_name, const char *node_name, Error **errp) | |
3746 | { | |
3747 | AioContext *aio_context; | |
3748 | BlockBackend *blk; | |
3749 | BlockDriverState *bs; | |
3750 | ||
3751 | if (has_id && has_node_name) { | |
3752 | error_setg(errp, "Only one of id and node-name must be specified"); | |
3753 | return; | |
3754 | } else if (!has_id && !has_node_name) { | |
3755 | error_setg(errp, "No block device specified"); | |
3756 | return; | |
3757 | } | |
3758 | ||
3759 | if (has_id) { | |
3760 | blk = blk_by_name(id); | |
3761 | if (!blk) { | |
3762 | error_setg(errp, "Cannot find block backend %s", id); | |
3763 | return; | |
3764 | } | |
3765 | if (blk_get_refcnt(blk) > 1) { | |
3766 | error_setg(errp, "Block backend %s is in use", id); | |
3767 | return; | |
3768 | } | |
3769 | bs = blk_bs(blk); | |
3770 | aio_context = blk_get_aio_context(blk); | |
3771 | } else { | |
3772 | bs = bdrv_find_node(node_name); | |
3773 | if (!bs) { | |
3774 | error_setg(errp, "Cannot find node %s", node_name); | |
3775 | return; | |
3776 | } | |
3777 | blk = bs->blk; | |
3778 | if (blk) { | |
3779 | error_setg(errp, "Node %s is in use by %s", | |
3780 | node_name, blk_name(blk)); | |
3781 | return; | |
3782 | } | |
3783 | aio_context = bdrv_get_aio_context(bs); | |
3784 | } | |
3785 | ||
3786 | aio_context_acquire(aio_context); | |
3787 | ||
3788 | if (bs) { | |
3789 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { | |
3790 | goto out; | |
3791 | } | |
3792 | ||
3793 | if (bs->refcnt > 1 || !QLIST_EMPTY(&bs->parents)) { | |
3794 | error_setg(errp, "Block device %s is in use", | |
3795 | bdrv_get_device_or_node_name(bs)); | |
3796 | goto out; | |
3797 | } | |
3798 | } | |
3799 | ||
3800 | if (blk) { | |
3801 | blk_unref(blk); | |
3802 | } else { | |
3803 | bdrv_unref(bs); | |
3804 | } | |
3805 | ||
3806 | out: | |
3807 | aio_context_release(aio_context); | |
3808 | } | |
3809 | ||
fea68bb6 | 3810 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
fb5458cd | 3811 | { |
fea68bb6 MA |
3812 | BlockJobInfoList *head = NULL, **p_next = &head; |
3813 | BlockDriverState *bs; | |
fb5458cd | 3814 | |
fea68bb6 | 3815 | for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) { |
69691e72 SH |
3816 | AioContext *aio_context = bdrv_get_aio_context(bs); |
3817 | ||
3818 | aio_context_acquire(aio_context); | |
3819 | ||
fea68bb6 MA |
3820 | if (bs->job) { |
3821 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); | |
3822 | elem->value = block_job_query(bs->job); | |
3823 | *p_next = elem; | |
3824 | p_next = &elem->next; | |
3825 | } | |
69691e72 SH |
3826 | |
3827 | aio_context_release(aio_context); | |
fb5458cd | 3828 | } |
fb5458cd | 3829 | |
fea68bb6 | 3830 | return head; |
fb5458cd | 3831 | } |
4d454574 | 3832 | |
0006383e | 3833 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 3834 | .name = "drive", |
0006383e | 3835 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
3836 | .desc = { |
3837 | { | |
4d454574 PB |
3838 | .name = "snapshot", |
3839 | .type = QEMU_OPT_BOOL, | |
3840 | .help = "enable/disable snapshot mode", | |
a9384aff PB |
3841 | },{ |
3842 | .name = "discard", | |
3843 | .type = QEMU_OPT_STRING, | |
3844 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 3845 | },{ |
54861b92 | 3846 | .name = BDRV_OPT_CACHE_WB, |
29c4e2b5 KW |
3847 | .type = QEMU_OPT_BOOL, |
3848 | .help = "enables writeback mode for any caches", | |
3849 | },{ | |
54861b92 | 3850 | .name = BDRV_OPT_CACHE_DIRECT, |
29c4e2b5 KW |
3851 | .type = QEMU_OPT_BOOL, |
3852 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
3853 | },{ | |
54861b92 | 3854 | .name = BDRV_OPT_CACHE_NO_FLUSH, |
29c4e2b5 KW |
3855 | .type = QEMU_OPT_BOOL, |
3856 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
3857 | },{ |
3858 | .name = "aio", | |
3859 | .type = QEMU_OPT_STRING, | |
3860 | .help = "host AIO implementation (threads, native)", | |
3861 | },{ | |
3862 | .name = "format", | |
3863 | .type = QEMU_OPT_STRING, | |
3864 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
3865 | },{ |
3866 | .name = "rerror", | |
3867 | .type = QEMU_OPT_STRING, | |
3868 | .help = "read error action", | |
3869 | },{ | |
3870 | .name = "werror", | |
3871 | .type = QEMU_OPT_STRING, | |
3872 | .help = "write error action", | |
4d454574 | 3873 | },{ |
0f227a94 | 3874 | .name = "read-only", |
4d454574 PB |
3875 | .type = QEMU_OPT_BOOL, |
3876 | .help = "open drive file as read-only", | |
3877 | },{ | |
57975222 | 3878 | .name = "throttling.iops-total", |
4d454574 PB |
3879 | .type = QEMU_OPT_NUMBER, |
3880 | .help = "limit total I/O operations per second", | |
3881 | },{ | |
57975222 | 3882 | .name = "throttling.iops-read", |
4d454574 PB |
3883 | .type = QEMU_OPT_NUMBER, |
3884 | .help = "limit read operations per second", | |
3885 | },{ | |
57975222 | 3886 | .name = "throttling.iops-write", |
4d454574 PB |
3887 | .type = QEMU_OPT_NUMBER, |
3888 | .help = "limit write operations per second", | |
3889 | },{ | |
57975222 | 3890 | .name = "throttling.bps-total", |
4d454574 PB |
3891 | .type = QEMU_OPT_NUMBER, |
3892 | .help = "limit total bytes per second", | |
3893 | },{ | |
57975222 | 3894 | .name = "throttling.bps-read", |
4d454574 PB |
3895 | .type = QEMU_OPT_NUMBER, |
3896 | .help = "limit read bytes per second", | |
3897 | },{ | |
57975222 | 3898 | .name = "throttling.bps-write", |
4d454574 PB |
3899 | .type = QEMU_OPT_NUMBER, |
3900 | .help = "limit write bytes per second", | |
3e9fab69 BC |
3901 | },{ |
3902 | .name = "throttling.iops-total-max", | |
3903 | .type = QEMU_OPT_NUMBER, | |
3904 | .help = "I/O operations burst", | |
3905 | },{ | |
3906 | .name = "throttling.iops-read-max", | |
3907 | .type = QEMU_OPT_NUMBER, | |
3908 | .help = "I/O operations read burst", | |
3909 | },{ | |
3910 | .name = "throttling.iops-write-max", | |
3911 | .type = QEMU_OPT_NUMBER, | |
3912 | .help = "I/O operations write burst", | |
3913 | },{ | |
3914 | .name = "throttling.bps-total-max", | |
3915 | .type = QEMU_OPT_NUMBER, | |
3916 | .help = "total bytes burst", | |
3917 | },{ | |
3918 | .name = "throttling.bps-read-max", | |
3919 | .type = QEMU_OPT_NUMBER, | |
3920 | .help = "total bytes read burst", | |
3921 | },{ | |
3922 | .name = "throttling.bps-write-max", | |
3923 | .type = QEMU_OPT_NUMBER, | |
3924 | .help = "total bytes write burst", | |
2024c1df BC |
3925 | },{ |
3926 | .name = "throttling.iops-size", | |
3927 | .type = QEMU_OPT_NUMBER, | |
3928 | .help = "when limiting by iops max size of an I/O in bytes", | |
76f4afb4 AG |
3929 | },{ |
3930 | .name = "throttling.group", | |
3931 | .type = QEMU_OPT_STRING, | |
3932 | .help = "name of the block throttling group", | |
4d454574 PB |
3933 | },{ |
3934 | .name = "copy-on-read", | |
3935 | .type = QEMU_OPT_BOOL, | |
3936 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
3937 | },{ |
3938 | .name = "detect-zeroes", | |
3939 | .type = QEMU_OPT_STRING, | |
3940 | .help = "try to optimize zero writes (off, on, unmap)", | |
362e9299 AG |
3941 | },{ |
3942 | .name = "stats-account-invalid", | |
3943 | .type = QEMU_OPT_BOOL, | |
3944 | .help = "whether to account for invalid I/O operations " | |
3945 | "in the statistics", | |
3946 | },{ | |
3947 | .name = "stats-account-failed", | |
3948 | .type = QEMU_OPT_BOOL, | |
3949 | .help = "whether to account for failed I/O operations " | |
3950 | "in the statistics", | |
2be5506f AG |
3951 | },{ |
3952 | .name = "stats-intervals", | |
3953 | .type = QEMU_OPT_STRING, | |
3954 | .help = "colon-separated list of intervals " | |
3955 | "for collecting I/O statistics, in seconds", | |
4d454574 PB |
3956 | }, |
3957 | { /* end of list */ } | |
3958 | }, | |
3959 | }; | |
0006383e | 3960 | |
bd745e23 HR |
3961 | static QemuOptsList qemu_root_bds_opts = { |
3962 | .name = "root-bds", | |
3963 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), | |
3964 | .desc = { | |
3965 | { | |
3966 | .name = "discard", | |
3967 | .type = QEMU_OPT_STRING, | |
3968 | .help = "discard operation (ignore/off, unmap/on)", | |
3969 | },{ | |
3970 | .name = "cache.writeback", | |
3971 | .type = QEMU_OPT_BOOL, | |
3972 | .help = "enables writeback mode for any caches", | |
3973 | },{ | |
3974 | .name = "cache.direct", | |
3975 | .type = QEMU_OPT_BOOL, | |
3976 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
3977 | },{ | |
3978 | .name = "cache.no-flush", | |
3979 | .type = QEMU_OPT_BOOL, | |
3980 | .help = "ignore any flush requests for the device", | |
3981 | },{ | |
3982 | .name = "aio", | |
3983 | .type = QEMU_OPT_STRING, | |
3984 | .help = "host AIO implementation (threads, native)", | |
3985 | },{ | |
3986 | .name = "read-only", | |
3987 | .type = QEMU_OPT_BOOL, | |
3988 | .help = "open drive file as read-only", | |
3989 | },{ | |
3990 | .name = "copy-on-read", | |
3991 | .type = QEMU_OPT_BOOL, | |
3992 | .help = "copy read data from backing file into image file", | |
3993 | },{ | |
3994 | .name = "detect-zeroes", | |
3995 | .type = QEMU_OPT_STRING, | |
3996 | .help = "try to optimize zero writes (off, on, unmap)", | |
3997 | }, | |
3998 | { /* end of list */ } | |
3999 | }, | |
4000 | }; | |
4001 | ||
0006383e KW |
4002 | QemuOptsList qemu_drive_opts = { |
4003 | .name = "drive", | |
4004 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
4005 | .desc = { | |
492fdc6f KW |
4006 | /* |
4007 | * no elements => accept any params | |
4008 | * validation will happen later | |
4009 | */ | |
0006383e KW |
4010 | { /* end of list */ } |
4011 | }, | |
4012 | }; |