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