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666daa68 MA |
1 | /* |
2 | * QEMU host block devices | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or | |
7 | * later. See the COPYING file in the top-level directory. | |
3618a094 MA |
8 | * |
9 | * This file incorporates work covered by the following copyright and | |
10 | * permission notice: | |
11 | * | |
12 | * Copyright (c) 2003-2008 Fabrice Bellard | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
15 | * of this software and associated documentation files (the "Software"), to deal | |
16 | * in the Software without restriction, including without limitation the rights | |
17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
18 | * copies of the Software, and to permit persons to whom the Software is | |
19 | * furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice shall be included in | |
22 | * all copies or substantial portions of the Software. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
30 | * THE SOFTWARE. | |
666daa68 MA |
31 | */ |
32 | ||
d38ea87a | 33 | #include "qemu/osdep.h" |
26f54e9a | 34 | #include "sysemu/block-backend.h" |
9c17d615 | 35 | #include "sysemu/blockdev.h" |
0d09e41a | 36 | #include "hw/block/block.h" |
737e150e | 37 | #include "block/blockjob.h" |
76f4afb4 | 38 | #include "block/throttle-groups.h" |
83c9089e | 39 | #include "monitor/monitor.h" |
d49b6836 | 40 | #include "qemu/error-report.h" |
1de7afc9 PB |
41 | #include "qemu/option.h" |
42 | #include "qemu/config-file.h" | |
7b1b5d19 | 43 | #include "qapi/qmp/types.h" |
d26c9a15 | 44 | #include "qapi-visit.h" |
cc7a8ea7 | 45 | #include "qapi/qmp/qerror.h" |
d26c9a15 | 46 | #include "qapi/qmp-output-visitor.h" |
9e7dac7c | 47 | #include "qapi/util.h" |
9c17d615 | 48 | #include "sysemu/sysemu.h" |
737e150e | 49 | #include "block/block_int.h" |
a4dea8a9 | 50 | #include "qmp-commands.h" |
12bd451f | 51 | #include "trace.h" |
9c17d615 | 52 | #include "sysemu/arch_init.h" |
f348b6d1 VB |
53 | #include "qemu/cutils.h" |
54 | #include "qemu/help_option.h" | |
666daa68 | 55 | |
9c4218e9 HR |
56 | static QTAILQ_HEAD(, BlockDriverState) monitor_bdrv_states = |
57 | QTAILQ_HEAD_INITIALIZER(monitor_bdrv_states); | |
58 | ||
1960966d MA |
59 | static const char *const if_name[IF_COUNT] = { |
60 | [IF_NONE] = "none", | |
61 | [IF_IDE] = "ide", | |
62 | [IF_SCSI] = "scsi", | |
63 | [IF_FLOPPY] = "floppy", | |
64 | [IF_PFLASH] = "pflash", | |
65 | [IF_MTD] = "mtd", | |
66 | [IF_SD] = "sd", | |
67 | [IF_VIRTIO] = "virtio", | |
68 | [IF_XEN] = "xen", | |
69 | }; | |
70 | ||
21dff8cf | 71 | static int if_max_devs[IF_COUNT] = { |
27d6bf40 MA |
72 | /* |
73 | * Do not change these numbers! They govern how drive option | |
74 | * index maps to unit and bus. That mapping is ABI. | |
75 | * | |
547cb157 | 76 | * All controllers used to implement if=T drives need to support |
27d6bf40 MA |
77 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
78 | * Otherwise, some index values map to "impossible" bus, unit | |
79 | * values. | |
80 | * | |
81 | * For instance, if you change [IF_SCSI] to 255, -drive | |
82 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
83 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
84 | * the drive can't be set up. Regression. | |
85 | */ | |
86 | [IF_IDE] = 2, | |
87 | [IF_SCSI] = 7, | |
1960966d MA |
88 | }; |
89 | ||
21dff8cf JS |
90 | /** |
91 | * Boards may call this to offer board-by-board overrides | |
92 | * of the default, global values. | |
93 | */ | |
94 | void override_max_devs(BlockInterfaceType type, int max_devs) | |
95 | { | |
18e46a03 | 96 | BlockBackend *blk; |
21dff8cf JS |
97 | DriveInfo *dinfo; |
98 | ||
99 | if (max_devs <= 0) { | |
100 | return; | |
101 | } | |
102 | ||
18e46a03 MA |
103 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
104 | dinfo = blk_legacy_dinfo(blk); | |
21dff8cf JS |
105 | if (dinfo->type == type) { |
106 | fprintf(stderr, "Cannot override units-per-bus property of" | |
107 | " the %s interface, because a drive of that type has" | |
108 | " already been added.\n", if_name[type]); | |
109 | g_assert_not_reached(); | |
110 | } | |
111 | } | |
112 | ||
113 | if_max_devs[type] = max_devs; | |
114 | } | |
115 | ||
14bafc54 MA |
116 | /* |
117 | * We automatically delete the drive when a device using it gets | |
118 | * unplugged. Questionable feature, but we can't just drop it. | |
119 | * Device models call blockdev_mark_auto_del() to schedule the | |
120 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
121 | * when deletion is actually safe. | |
122 | */ | |
4be74634 | 123 | void blockdev_mark_auto_del(BlockBackend *blk) |
14bafc54 | 124 | { |
18e46a03 | 125 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
4be74634 | 126 | BlockDriverState *bs = blk_bs(blk); |
91fddb0d | 127 | AioContext *aio_context; |
14bafc54 | 128 | |
26f8b3a8 | 129 | if (!dinfo) { |
2d246f01 KW |
130 | return; |
131 | } | |
132 | ||
5433c24f HR |
133 | if (bs) { |
134 | aio_context = bdrv_get_aio_context(bs); | |
135 | aio_context_acquire(aio_context); | |
91fddb0d | 136 | |
5433c24f HR |
137 | if (bs->job) { |
138 | block_job_cancel(bs->job); | |
139 | } | |
91fddb0d | 140 | |
5433c24f HR |
141 | aio_context_release(aio_context); |
142 | } | |
91fddb0d | 143 | |
26f8b3a8 | 144 | dinfo->auto_del = 1; |
14bafc54 MA |
145 | } |
146 | ||
4be74634 | 147 | void blockdev_auto_del(BlockBackend *blk) |
14bafc54 | 148 | { |
18e46a03 | 149 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
14bafc54 | 150 | |
0fc0f1fa | 151 | if (dinfo && dinfo->auto_del) { |
efaa7c4e | 152 | monitor_remove_blk(blk); |
b9fe8a7a | 153 | blk_unref(blk); |
14bafc54 MA |
154 | } |
155 | } | |
156 | ||
d8f94e1b JS |
157 | /** |
158 | * Returns the current mapping of how many units per bus | |
159 | * a particular interface can support. | |
160 | * | |
161 | * A positive integer indicates n units per bus. | |
162 | * 0 implies the mapping has not been established. | |
163 | * -1 indicates an invalid BlockInterfaceType was given. | |
164 | */ | |
165 | int drive_get_max_devs(BlockInterfaceType type) | |
166 | { | |
167 | if (type >= IF_IDE && type < IF_COUNT) { | |
168 | return if_max_devs[type]; | |
169 | } | |
170 | ||
171 | return -1; | |
172 | } | |
173 | ||
505a7fb1 MA |
174 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
175 | { | |
176 | int max_devs = if_max_devs[type]; | |
177 | return max_devs ? index / max_devs : 0; | |
178 | } | |
179 | ||
180 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
181 | { | |
182 | int max_devs = if_max_devs[type]; | |
183 | return max_devs ? index % max_devs : index; | |
184 | } | |
185 | ||
2292ddae MA |
186 | QemuOpts *drive_def(const char *optstr) |
187 | { | |
70b94331 | 188 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
2292ddae MA |
189 | } |
190 | ||
191 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 192 | const char *optstr) |
666daa68 | 193 | { |
666daa68 MA |
194 | QemuOpts *opts; |
195 | ||
2292ddae | 196 | opts = drive_def(optstr); |
666daa68 MA |
197 | if (!opts) { |
198 | return NULL; | |
199 | } | |
2292ddae | 200 | if (type != IF_DEFAULT) { |
f43e47db | 201 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
2292ddae MA |
202 | } |
203 | if (index >= 0) { | |
a8b18f8f | 204 | qemu_opt_set_number(opts, "index", index, &error_abort); |
2292ddae | 205 | } |
666daa68 | 206 | if (file) |
f43e47db | 207 | qemu_opt_set(opts, "file", file, &error_abort); |
666daa68 MA |
208 | return opts; |
209 | } | |
210 | ||
211 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
212 | { | |
18e46a03 | 213 | BlockBackend *blk; |
666daa68 MA |
214 | DriveInfo *dinfo; |
215 | ||
18e46a03 MA |
216 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
217 | dinfo = blk_legacy_dinfo(blk); | |
218 | if (dinfo && dinfo->type == type | |
219 | && dinfo->bus == bus && dinfo->unit == unit) { | |
666daa68 | 220 | return dinfo; |
18e46a03 | 221 | } |
666daa68 MA |
222 | } |
223 | ||
224 | return NULL; | |
225 | } | |
226 | ||
a66c9dc7 JS |
227 | bool drive_check_orphaned(void) |
228 | { | |
18e46a03 | 229 | BlockBackend *blk; |
a66c9dc7 JS |
230 | DriveInfo *dinfo; |
231 | bool rs = false; | |
232 | ||
18e46a03 MA |
233 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
234 | dinfo = blk_legacy_dinfo(blk); | |
a66c9dc7 JS |
235 | /* If dinfo->bdrv->dev is NULL, it has no device attached. */ |
236 | /* Unless this is a default drive, this may be an oversight. */ | |
a7f53e26 | 237 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
a66c9dc7 JS |
238 | dinfo->type != IF_NONE) { |
239 | fprintf(stderr, "Warning: Orphaned drive without device: " | |
240 | "id=%s,file=%s,if=%s,bus=%d,unit=%d\n", | |
5433c24f HR |
241 | blk_name(blk), blk_bs(blk) ? blk_bs(blk)->filename : "", |
242 | if_name[dinfo->type], dinfo->bus, dinfo->unit); | |
a66c9dc7 JS |
243 | rs = true; |
244 | } | |
245 | } | |
246 | ||
247 | return rs; | |
248 | } | |
249 | ||
f1bd51ac MA |
250 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
251 | { | |
252 | return drive_get(type, | |
253 | drive_index_to_bus_id(type, index), | |
254 | drive_index_to_unit_id(type, index)); | |
255 | } | |
256 | ||
666daa68 MA |
257 | int drive_get_max_bus(BlockInterfaceType type) |
258 | { | |
259 | int max_bus; | |
18e46a03 | 260 | BlockBackend *blk; |
666daa68 MA |
261 | DriveInfo *dinfo; |
262 | ||
263 | max_bus = -1; | |
18e46a03 MA |
264 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
265 | dinfo = blk_legacy_dinfo(blk); | |
266 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { | |
666daa68 | 267 | max_bus = dinfo->bus; |
18e46a03 | 268 | } |
666daa68 MA |
269 | } |
270 | return max_bus; | |
271 | } | |
272 | ||
13839974 MA |
273 | /* Get a block device. This should only be used for single-drive devices |
274 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
275 | appropriate bus. */ | |
276 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
277 | { | |
278 | static int next_block_unit[IF_COUNT]; | |
279 | ||
280 | return drive_get(type, 0, next_block_unit[type]++); | |
281 | } | |
282 | ||
666daa68 MA |
283 | static void bdrv_format_print(void *opaque, const char *name) |
284 | { | |
807105a7 | 285 | error_printf(" %s", name); |
666daa68 MA |
286 | } |
287 | ||
aa398a5c SH |
288 | typedef struct { |
289 | QEMUBH *bh; | |
fa510ebf FZ |
290 | BlockDriverState *bs; |
291 | } BDRVPutRefBH; | |
aa398a5c | 292 | |
b681072d | 293 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
294 | { |
295 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 296 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 297 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 298 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 299 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 300 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 301 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 302 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 303 | } else { |
b681072d KW |
304 | error_setg(errp, "'%s' invalid %s error action", |
305 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
306 | return -1; |
307 | } | |
308 | } | |
309 | ||
40119eff AG |
310 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
311 | Error **errp) | |
312 | { | |
313 | const QListEntry *entry; | |
314 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { | |
315 | switch (qobject_type(entry->value)) { | |
316 | ||
317 | case QTYPE_QSTRING: { | |
318 | unsigned long long length; | |
319 | const char *str = qstring_get_str(qobject_to_qstring(entry->value)); | |
320 | if (parse_uint_full(str, &length, 10) == 0 && | |
321 | length > 0 && length <= UINT_MAX) { | |
322 | block_acct_add_interval(stats, (unsigned) length); | |
323 | } else { | |
324 | error_setg(errp, "Invalid interval length: %s", str); | |
325 | return false; | |
326 | } | |
327 | break; | |
328 | } | |
329 | ||
330 | case QTYPE_QINT: { | |
331 | int64_t length = qint_get_int(qobject_to_qint(entry->value)); | |
332 | if (length > 0 && length <= UINT_MAX) { | |
333 | block_acct_add_interval(stats, (unsigned) length); | |
334 | } else { | |
335 | error_setg(errp, "Invalid interval length: %" PRId64, length); | |
336 | return false; | |
337 | } | |
338 | break; | |
339 | } | |
340 | ||
341 | default: | |
342 | error_setg(errp, "The specification of stats-intervals is invalid"); | |
343 | return false; | |
344 | } | |
345 | } | |
346 | return true; | |
347 | } | |
348 | ||
33cb7dc8 KW |
349 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
350 | ||
fbf8175e HR |
351 | /* All parameters but @opts are optional and may be set to NULL. */ |
352 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, | |
353 | const char **throttling_group, ThrottleConfig *throttle_cfg, | |
354 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) | |
355 | { | |
356 | const char *discard; | |
357 | Error *local_error = NULL; | |
358 | const char *aio; | |
359 | ||
360 | if (bdrv_flags) { | |
361 | if (!qemu_opt_get_bool(opts, "read-only", false)) { | |
362 | *bdrv_flags |= BDRV_O_RDWR; | |
363 | } | |
364 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { | |
365 | *bdrv_flags |= BDRV_O_COPY_ON_READ; | |
366 | } | |
367 | ||
368 | if ((discard = qemu_opt_get(opts, "discard")) != NULL) { | |
369 | if (bdrv_parse_discard_flags(discard, bdrv_flags) != 0) { | |
370 | error_setg(errp, "Invalid discard option"); | |
371 | return; | |
372 | } | |
373 | } | |
374 | ||
fbf8175e HR |
375 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
376 | if (!strcmp(aio, "native")) { | |
377 | *bdrv_flags |= BDRV_O_NATIVE_AIO; | |
378 | } else if (!strcmp(aio, "threads")) { | |
379 | /* this is the default */ | |
380 | } else { | |
381 | error_setg(errp, "invalid aio option"); | |
382 | return; | |
383 | } | |
384 | } | |
385 | } | |
386 | ||
387 | /* disk I/O throttling */ | |
388 | if (throttling_group) { | |
389 | *throttling_group = qemu_opt_get(opts, "throttling.group"); | |
390 | } | |
391 | ||
392 | if (throttle_cfg) { | |
1588ab5d | 393 | throttle_config_init(throttle_cfg); |
fbf8175e HR |
394 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
395 | qemu_opt_get_number(opts, "throttling.bps-total", 0); | |
396 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = | |
397 | qemu_opt_get_number(opts, "throttling.bps-read", 0); | |
398 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = | |
399 | qemu_opt_get_number(opts, "throttling.bps-write", 0); | |
400 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = | |
401 | qemu_opt_get_number(opts, "throttling.iops-total", 0); | |
402 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = | |
403 | qemu_opt_get_number(opts, "throttling.iops-read", 0); | |
404 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = | |
405 | qemu_opt_get_number(opts, "throttling.iops-write", 0); | |
406 | ||
407 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = | |
408 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
409 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = | |
410 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
411 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = | |
412 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
413 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = | |
414 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
415 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = | |
416 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
417 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = | |
418 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
419 | ||
8a0fc18d AG |
420 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
421 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); | |
422 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = | |
423 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); | |
424 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = | |
425 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); | |
426 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = | |
427 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); | |
428 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = | |
429 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); | |
430 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = | |
431 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); | |
432 | ||
fbf8175e HR |
433 | throttle_cfg->op_size = |
434 | qemu_opt_get_number(opts, "throttling.iops-size", 0); | |
435 | ||
d5851089 | 436 | if (!throttle_is_valid(throttle_cfg, errp)) { |
fbf8175e HR |
437 | return; |
438 | } | |
439 | } | |
440 | ||
441 | if (detect_zeroes) { | |
442 | *detect_zeroes = | |
443 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, | |
444 | qemu_opt_get(opts, "detect-zeroes"), | |
7fb1cf16 | 445 | BLOCKDEV_DETECT_ZEROES_OPTIONS__MAX, |
fbf8175e HR |
446 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
447 | &local_error); | |
448 | if (local_error) { | |
449 | error_propagate(errp, local_error); | |
450 | return; | |
451 | } | |
452 | ||
453 | if (bdrv_flags && | |
454 | *detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && | |
455 | !(*bdrv_flags & BDRV_O_UNMAP)) | |
456 | { | |
457 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " | |
458 | "without setting discard operation to unmap"); | |
459 | return; | |
460 | } | |
461 | } | |
462 | } | |
463 | ||
f298d071 | 464 | /* Takes the ownership of bs_opts */ |
18e46a03 MA |
465 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
466 | Error **errp) | |
666daa68 MA |
467 | { |
468 | const char *buf; | |
666daa68 MA |
469 | int bdrv_flags = 0; |
470 | int on_read_error, on_write_error; | |
362e9299 | 471 | bool account_invalid, account_failed; |
e4b24b49 | 472 | bool writethrough; |
26f54e9a | 473 | BlockBackend *blk; |
a0f1eab1 | 474 | BlockDriverState *bs; |
cc0681c4 | 475 | ThrottleConfig cfg; |
666daa68 | 476 | int snapshot = 0; |
c546194f | 477 | Error *error = NULL; |
0006383e | 478 | QemuOpts *opts; |
40119eff AG |
479 | QDict *interval_dict = NULL; |
480 | QList *interval_list = NULL; | |
0006383e | 481 | const char *id; |
fbf8175e HR |
482 | BlockdevDetectZeroesOptions detect_zeroes = |
483 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; | |
484 | const char *throttling_group = NULL; | |
666daa68 | 485 | |
f298d071 KW |
486 | /* Check common options by copying from bs_opts to opts, all other options |
487 | * stay in bs_opts for processing by bdrv_open(). */ | |
488 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 489 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 490 | if (error) { |
b681072d | 491 | error_propagate(errp, error); |
6376f952 | 492 | goto err_no_opts; |
0006383e KW |
493 | } |
494 | ||
0006383e | 495 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 496 | if (error) { |
b681072d | 497 | error_propagate(errp, error); |
ec9c10d2 | 498 | goto early_err; |
0006383e KW |
499 | } |
500 | ||
501 | if (id) { | |
502 | qdict_del(bs_opts, "id"); | |
503 | } | |
504 | ||
666daa68 | 505 | /* extract parameters */ |
666daa68 | 506 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
666daa68 | 507 | |
362e9299 AG |
508 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
509 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); | |
510 | ||
e4b24b49 KW |
511 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
512 | ||
40119eff AG |
513 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
514 | qdict_array_split(interval_dict, &interval_list); | |
515 | ||
516 | if (qdict_size(interval_dict) != 0) { | |
517 | error_setg(errp, "Invalid option stats-intervals.%s", | |
518 | qdict_first(interval_dict)->key); | |
519 | goto early_err; | |
520 | } | |
2be5506f | 521 | |
fbf8175e HR |
522 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
523 | &detect_zeroes, &error); | |
524 | if (error) { | |
525 | error_propagate(errp, error); | |
526 | goto early_err; | |
666daa68 | 527 | } |
666daa68 MA |
528 | |
529 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
530 | if (is_help_option(buf)) { |
531 | error_printf("Supported formats:"); | |
532 | bdrv_iterate_format(bdrv_format_print, NULL); | |
533 | error_printf("\n"); | |
ec9c10d2 | 534 | goto early_err; |
666daa68 | 535 | } |
74fe54f2 | 536 | |
e4342ce5 HR |
537 | if (qdict_haskey(bs_opts, "driver")) { |
538 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); | |
ec9c10d2 | 539 | goto early_err; |
6db5f5d6 | 540 | } |
e4342ce5 | 541 | qdict_put(bs_opts, "driver", qstring_from_str(buf)); |
666daa68 MA |
542 | } |
543 | ||
92aa5c6d | 544 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 545 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 546 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 547 | if (error) { |
b681072d | 548 | error_propagate(errp, error); |
ec9c10d2 | 549 | goto early_err; |
666daa68 MA |
550 | } |
551 | } | |
552 | ||
92aa5c6d | 553 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 554 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 555 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 556 | if (error) { |
b681072d | 557 | error_propagate(errp, error); |
ec9c10d2 | 558 | goto early_err; |
666daa68 MA |
559 | } |
560 | } | |
561 | ||
5ec18f8c | 562 | if (snapshot) { |
91a097e7 | 563 | bdrv_flags |= BDRV_O_SNAPSHOT; |
5ec18f8c HR |
564 | } |
565 | ||
326642bc | 566 | /* init */ |
39c4ae94 | 567 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
5ec18f8c HR |
568 | BlockBackendRootState *blk_rs; |
569 | ||
efaa7c4e | 570 | blk = blk_new(errp); |
e4342ce5 HR |
571 | if (!blk) { |
572 | goto early_err; | |
573 | } | |
abd7f68d | 574 | |
5ec18f8c HR |
575 | blk_rs = blk_get_root_state(blk); |
576 | blk_rs->open_flags = bdrv_flags; | |
fbf8175e | 577 | blk_rs->read_only = !(bdrv_flags & BDRV_O_RDWR); |
5ec18f8c HR |
578 | blk_rs->detect_zeroes = detect_zeroes; |
579 | ||
e4342ce5 HR |
580 | QDECREF(bs_opts); |
581 | } else { | |
582 | if (file && !*file) { | |
c2ad1b0c | 583 | file = NULL; |
c2ad1b0c | 584 | } |
666daa68 | 585 | |
91a097e7 KW |
586 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
587 | * with other callers) rather than what we want as the real defaults. | |
588 | * Apply the defaults here instead. */ | |
91a097e7 KW |
589 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
590 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
72e775c7 | 591 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
91a097e7 | 592 | |
12d5ee3a KW |
593 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
594 | bdrv_flags |= BDRV_O_INACTIVE; | |
595 | } | |
596 | ||
efaa7c4e | 597 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
e4342ce5 HR |
598 | if (!blk) { |
599 | goto err_no_bs_opts; | |
600 | } | |
601 | bs = blk_bs(blk); | |
ed9d4205 | 602 | |
5ec18f8c | 603 | bs->detect_zeroes = detect_zeroes; |
666daa68 | 604 | |
5ec18f8c HR |
605 | if (bdrv_key_required(bs)) { |
606 | autostart = 0; | |
76f4afb4 | 607 | } |
362e9299 AG |
608 | |
609 | block_acct_init(blk_get_stats(blk), account_invalid, account_failed); | |
2be5506f | 610 | |
40119eff AG |
611 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
612 | blk_unref(blk); | |
613 | blk = NULL; | |
614 | goto err_no_bs_opts; | |
2be5506f | 615 | } |
666daa68 MA |
616 | } |
617 | ||
7ca7f0f6 KW |
618 | /* disk I/O throttling */ |
619 | if (throttle_enabled(&cfg)) { | |
620 | if (!throttling_group) { | |
621 | throttling_group = blk_name(blk); | |
622 | } | |
623 | blk_io_limits_enable(blk, throttling_group); | |
624 | blk_set_io_limits(blk, &cfg); | |
625 | } | |
626 | ||
e4b24b49 | 627 | blk_set_enable_write_cache(blk, !writethrough); |
5ec18f8c | 628 | blk_set_on_error(blk, on_read_error, on_write_error); |
0006383e | 629 | |
efaa7c4e HR |
630 | if (!monitor_add_blk(blk, qemu_opts_id(opts), errp)) { |
631 | blk_unref(blk); | |
632 | blk = NULL; | |
633 | goto err_no_bs_opts; | |
634 | } | |
635 | ||
e4342ce5 | 636 | err_no_bs_opts: |
0006383e | 637 | qemu_opts_del(opts); |
40119eff AG |
638 | QDECREF(interval_dict); |
639 | QDECREF(interval_list); | |
18e46a03 | 640 | return blk; |
a9ae2bff | 641 | |
ec9c10d2 | 642 | early_err: |
ec9c10d2 | 643 | qemu_opts_del(opts); |
40119eff AG |
644 | QDECREF(interval_dict); |
645 | QDECREF(interval_list); | |
6376f952 MA |
646 | err_no_opts: |
647 | QDECREF(bs_opts); | |
a9ae2bff | 648 | return NULL; |
666daa68 MA |
649 | } |
650 | ||
bd745e23 HR |
651 | static QemuOptsList qemu_root_bds_opts; |
652 | ||
653 | /* Takes the ownership of bs_opts */ | |
654 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) | |
655 | { | |
656 | BlockDriverState *bs; | |
657 | QemuOpts *opts; | |
658 | Error *local_error = NULL; | |
659 | BlockdevDetectZeroesOptions detect_zeroes; | |
660 | int ret; | |
661 | int bdrv_flags = 0; | |
662 | ||
663 | opts = qemu_opts_create(&qemu_root_bds_opts, NULL, 1, errp); | |
664 | if (!opts) { | |
665 | goto fail; | |
666 | } | |
667 | ||
668 | qemu_opts_absorb_qdict(opts, bs_opts, &local_error); | |
669 | if (local_error) { | |
670 | error_propagate(errp, local_error); | |
671 | goto fail; | |
672 | } | |
673 | ||
674 | extract_common_blockdev_options(opts, &bdrv_flags, NULL, NULL, | |
675 | &detect_zeroes, &local_error); | |
676 | if (local_error) { | |
677 | error_propagate(errp, local_error); | |
678 | goto fail; | |
679 | } | |
680 | ||
a81d6164 KW |
681 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
682 | * with other callers) rather than what we want as the real defaults. | |
683 | * Apply the defaults here instead. */ | |
a81d6164 KW |
684 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
685 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
686 | ||
12d5ee3a KW |
687 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
688 | bdrv_flags |= BDRV_O_INACTIVE; | |
689 | } | |
690 | ||
bd745e23 HR |
691 | bs = NULL; |
692 | ret = bdrv_open(&bs, NULL, NULL, bs_opts, bdrv_flags, errp); | |
693 | if (ret < 0) { | |
694 | goto fail_no_bs_opts; | |
695 | } | |
696 | ||
697 | bs->detect_zeroes = detect_zeroes; | |
698 | ||
699 | fail_no_bs_opts: | |
700 | qemu_opts_del(opts); | |
701 | return bs; | |
702 | ||
703 | fail: | |
704 | qemu_opts_del(opts); | |
705 | QDECREF(bs_opts); | |
706 | return NULL; | |
707 | } | |
708 | ||
9c4218e9 HR |
709 | void blockdev_close_all_bdrv_states(void) |
710 | { | |
711 | BlockDriverState *bs, *next_bs; | |
712 | ||
713 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { | |
714 | AioContext *ctx = bdrv_get_aio_context(bs); | |
715 | ||
716 | aio_context_acquire(ctx); | |
717 | bdrv_unref(bs); | |
718 | aio_context_release(ctx); | |
719 | } | |
720 | } | |
721 | ||
262b4e8f HR |
722 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
723 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) | |
724 | { | |
725 | return bs ? QTAILQ_NEXT(bs, monitor_list) | |
726 | : QTAILQ_FIRST(&monitor_bdrv_states); | |
727 | } | |
728 | ||
5abbf0ee KW |
729 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
730 | Error **errp) | |
57975222 KW |
731 | { |
732 | const char *value; | |
733 | ||
734 | value = qemu_opt_get(opts, from); | |
735 | if (value) { | |
5abbf0ee KW |
736 | if (qemu_opt_find(opts, to)) { |
737 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " | |
738 | "same time", to, from); | |
739 | return; | |
740 | } | |
20d6cd47 JL |
741 | } |
742 | ||
743 | /* rename all items in opts */ | |
744 | while ((value = qemu_opt_get(opts, from))) { | |
f43e47db | 745 | qemu_opt_set(opts, to, value, &error_abort); |
57975222 KW |
746 | qemu_opt_unset(opts, from); |
747 | } | |
748 | } | |
749 | ||
33cb7dc8 KW |
750 | QemuOptsList qemu_legacy_drive_opts = { |
751 | .name = "drive", | |
752 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
753 | .desc = { | |
754 | { | |
87a899c5 KW |
755 | .name = "bus", |
756 | .type = QEMU_OPT_NUMBER, | |
757 | .help = "bus number", | |
758 | },{ | |
759 | .name = "unit", | |
760 | .type = QEMU_OPT_NUMBER, | |
761 | .help = "unit number (i.e. lun for scsi)", | |
762 | },{ | |
763 | .name = "index", | |
764 | .type = QEMU_OPT_NUMBER, | |
765 | .help = "index number", | |
766 | },{ | |
33cb7dc8 KW |
767 | .name = "media", |
768 | .type = QEMU_OPT_STRING, | |
769 | .help = "media type (disk, cdrom)", | |
593d464b KW |
770 | },{ |
771 | .name = "if", | |
772 | .type = QEMU_OPT_STRING, | |
773 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
774 | },{ |
775 | .name = "cyls", | |
776 | .type = QEMU_OPT_NUMBER, | |
777 | .help = "number of cylinders (ide disk geometry)", | |
778 | },{ | |
779 | .name = "heads", | |
780 | .type = QEMU_OPT_NUMBER, | |
781 | .help = "number of heads (ide disk geometry)", | |
782 | },{ | |
783 | .name = "secs", | |
784 | .type = QEMU_OPT_NUMBER, | |
785 | .help = "number of sectors (ide disk geometry)", | |
786 | },{ | |
787 | .name = "trans", | |
788 | .type = QEMU_OPT_STRING, | |
789 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
790 | },{ |
791 | .name = "boot", | |
792 | .type = QEMU_OPT_BOOL, | |
793 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
794 | },{ |
795 | .name = "addr", | |
796 | .type = QEMU_OPT_STRING, | |
797 | .help = "pci address (virtio only)", | |
bcf83158 KW |
798 | },{ |
799 | .name = "serial", | |
800 | .type = QEMU_OPT_STRING, | |
801 | .help = "disk serial number", | |
d095b465 HR |
802 | },{ |
803 | .name = "file", | |
804 | .type = QEMU_OPT_STRING, | |
805 | .help = "file name", | |
33cb7dc8 | 806 | }, |
0ebd24e0 KW |
807 | |
808 | /* Options that are passed on, but have special semantics with -drive */ | |
809 | { | |
810 | .name = "read-only", | |
811 | .type = QEMU_OPT_BOOL, | |
812 | .help = "open drive file as read-only", | |
ee13ed1c KW |
813 | },{ |
814 | .name = "rerror", | |
815 | .type = QEMU_OPT_STRING, | |
816 | .help = "read error action", | |
817 | },{ | |
818 | .name = "werror", | |
819 | .type = QEMU_OPT_STRING, | |
820 | .help = "write error action", | |
0ebd24e0 KW |
821 | },{ |
822 | .name = "copy-on-read", | |
823 | .type = QEMU_OPT_BOOL, | |
824 | .help = "copy read data from backing file into image file", | |
825 | }, | |
826 | ||
33cb7dc8 KW |
827 | { /* end of list */ } |
828 | }, | |
829 | }; | |
830 | ||
60e19e06 | 831 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
57975222 | 832 | { |
29c4e2b5 | 833 | const char *value; |
18e46a03 | 834 | BlockBackend *blk; |
33cb7dc8 | 835 | DriveInfo *dinfo = NULL; |
f298d071 | 836 | QDict *bs_opts; |
33cb7dc8 KW |
837 | QemuOpts *legacy_opts; |
838 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 839 | BlockInterfaceType type; |
b41a7338 | 840 | int cyls, heads, secs, translation; |
87a899c5 | 841 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 842 | const char *devaddr; |
ee13ed1c | 843 | const char *werror, *rerror; |
a7fdbcf0 FZ |
844 | bool read_only = false; |
845 | bool copy_on_read; | |
bcf83158 | 846 | const char *serial; |
d095b465 | 847 | const char *filename; |
33cb7dc8 | 848 | Error *local_err = NULL; |
247147fb | 849 | int i; |
29c4e2b5 | 850 | |
57975222 | 851 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
852 | static const struct { |
853 | const char *from; | |
854 | const char *to; | |
855 | } opt_renames[] = { | |
856 | { "iops", "throttling.iops-total" }, | |
857 | { "iops_rd", "throttling.iops-read" }, | |
858 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 859 | |
247147fb KW |
860 | { "bps", "throttling.bps-total" }, |
861 | { "bps_rd", "throttling.bps-read" }, | |
862 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 863 | |
247147fb KW |
864 | { "iops_max", "throttling.iops-total-max" }, |
865 | { "iops_rd_max", "throttling.iops-read-max" }, | |
866 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 867 | |
247147fb KW |
868 | { "bps_max", "throttling.bps-total-max" }, |
869 | { "bps_rd_max", "throttling.bps-read-max" }, | |
870 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 871 | |
247147fb | 872 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 873 | |
76f4afb4 AG |
874 | { "group", "throttling.group" }, |
875 | ||
247147fb KW |
876 | { "readonly", "read-only" }, |
877 | }; | |
878 | ||
879 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
5abbf0ee KW |
880 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
881 | &local_err); | |
882 | if (local_err) { | |
565f65d2 | 883 | error_report_err(local_err); |
5abbf0ee KW |
884 | return NULL; |
885 | } | |
247147fb | 886 | } |
0f227a94 | 887 | |
29c4e2b5 KW |
888 | value = qemu_opt_get(all_opts, "cache"); |
889 | if (value) { | |
890 | int flags = 0; | |
04feb4a5 | 891 | bool writethrough; |
29c4e2b5 | 892 | |
04feb4a5 | 893 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
29c4e2b5 KW |
894 | error_report("invalid cache option"); |
895 | return NULL; | |
896 | } | |
897 | ||
898 | /* Specific options take precedence */ | |
54861b92 KW |
899 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
900 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, | |
04feb4a5 | 901 | !writethrough, &error_abort); |
29c4e2b5 | 902 | } |
54861b92 KW |
903 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
904 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, | |
cccb7967 | 905 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
29c4e2b5 | 906 | } |
54861b92 KW |
907 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
908 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, | |
cccb7967 | 909 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
29c4e2b5 KW |
910 | } |
911 | qemu_opt_unset(all_opts, "cache"); | |
912 | } | |
913 | ||
f298d071 KW |
914 | /* Get a QDict for processing the options */ |
915 | bs_opts = qdict_new(); | |
916 | qemu_opts_to_qdict(all_opts, bs_opts); | |
917 | ||
87ea75d5 PC |
918 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
919 | &error_abort); | |
33cb7dc8 | 920 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 921 | if (local_err) { |
565f65d2 | 922 | error_report_err(local_err); |
33cb7dc8 KW |
923 | goto fail; |
924 | } | |
925 | ||
26929298 KW |
926 | /* Deprecated option boot=[on|off] */ |
927 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
928 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
929 | "ignored. Future versions will reject this parameter. Please " | |
930 | "update your scripts.\n"); | |
931 | } | |
932 | ||
33cb7dc8 KW |
933 | /* Media type */ |
934 | value = qemu_opt_get(legacy_opts, "media"); | |
935 | if (value) { | |
936 | if (!strcmp(value, "disk")) { | |
937 | media = MEDIA_DISK; | |
938 | } else if (!strcmp(value, "cdrom")) { | |
939 | media = MEDIA_CDROM; | |
a7fdbcf0 | 940 | read_only = true; |
33cb7dc8 KW |
941 | } else { |
942 | error_report("'%s' invalid media", value); | |
943 | goto fail; | |
944 | } | |
945 | } | |
946 | ||
0ebd24e0 | 947 | /* copy-on-read is disabled with a warning for read-only devices */ |
a7fdbcf0 | 948 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
0ebd24e0 KW |
949 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
950 | ||
951 | if (read_only && copy_on_read) { | |
952 | error_report("warning: disabling copy-on-read on read-only drive"); | |
953 | copy_on_read = false; | |
954 | } | |
955 | ||
956 | qdict_put(bs_opts, "read-only", | |
957 | qstring_from_str(read_only ? "on" : "off")); | |
958 | qdict_put(bs_opts, "copy-on-read", | |
959 | qstring_from_str(copy_on_read ? "on" :"off")); | |
960 | ||
593d464b KW |
961 | /* Controller type */ |
962 | value = qemu_opt_get(legacy_opts, "if"); | |
963 | if (value) { | |
964 | for (type = 0; | |
965 | type < IF_COUNT && strcmp(value, if_name[type]); | |
966 | type++) { | |
967 | } | |
968 | if (type == IF_COUNT) { | |
969 | error_report("unsupported bus type '%s'", value); | |
970 | goto fail; | |
971 | } | |
972 | } else { | |
973 | type = block_default_type; | |
974 | } | |
975 | ||
b41a7338 KW |
976 | /* Geometry */ |
977 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
978 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
979 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
980 | ||
981 | if (cyls || heads || secs) { | |
982 | if (cyls < 1) { | |
983 | error_report("invalid physical cyls number"); | |
984 | goto fail; | |
985 | } | |
986 | if (heads < 1) { | |
987 | error_report("invalid physical heads number"); | |
988 | goto fail; | |
989 | } | |
990 | if (secs < 1) { | |
991 | error_report("invalid physical secs number"); | |
992 | goto fail; | |
993 | } | |
994 | } | |
995 | ||
996 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
997 | value = qemu_opt_get(legacy_opts, "trans"); | |
998 | if (value != NULL) { | |
999 | if (!cyls) { | |
1000 | error_report("'%s' trans must be used with cyls, heads and secs", | |
1001 | value); | |
1002 | goto fail; | |
1003 | } | |
1004 | if (!strcmp(value, "none")) { | |
1005 | translation = BIOS_ATA_TRANSLATION_NONE; | |
1006 | } else if (!strcmp(value, "lba")) { | |
1007 | translation = BIOS_ATA_TRANSLATION_LBA; | |
f31c41ff PB |
1008 | } else if (!strcmp(value, "large")) { |
1009 | translation = BIOS_ATA_TRANSLATION_LARGE; | |
1010 | } else if (!strcmp(value, "rechs")) { | |
1011 | translation = BIOS_ATA_TRANSLATION_RECHS; | |
b41a7338 KW |
1012 | } else if (!strcmp(value, "auto")) { |
1013 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
1014 | } else { | |
1015 | error_report("'%s' invalid translation type", value); | |
1016 | goto fail; | |
1017 | } | |
1018 | } | |
1019 | ||
1020 | if (media == MEDIA_CDROM) { | |
1021 | if (cyls || secs || heads) { | |
1022 | error_report("CHS can't be set with media=cdrom"); | |
1023 | goto fail; | |
1024 | } | |
1025 | } | |
1026 | ||
87a899c5 KW |
1027 | /* Device address specified by bus/unit or index. |
1028 | * If none was specified, try to find the first free one. */ | |
1029 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
1030 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
1031 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
1032 | ||
1033 | max_devs = if_max_devs[type]; | |
1034 | ||
1035 | if (index != -1) { | |
1036 | if (bus_id != 0 || unit_id != -1) { | |
1037 | error_report("index cannot be used with bus and unit"); | |
1038 | goto fail; | |
1039 | } | |
1040 | bus_id = drive_index_to_bus_id(type, index); | |
1041 | unit_id = drive_index_to_unit_id(type, index); | |
1042 | } | |
1043 | ||
1044 | if (unit_id == -1) { | |
1045 | unit_id = 0; | |
1046 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
1047 | unit_id++; | |
1048 | if (max_devs && unit_id >= max_devs) { | |
1049 | unit_id -= max_devs; | |
1050 | bus_id++; | |
1051 | } | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | if (max_devs && unit_id >= max_devs) { | |
1056 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
1057 | goto fail; | |
1058 | } | |
1059 | ||
1060 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
1061 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
1062 | bus_id, unit_id, index); | |
1063 | goto fail; | |
1064 | } | |
1065 | ||
bcf83158 KW |
1066 | /* Serial number */ |
1067 | serial = qemu_opt_get(legacy_opts, "serial"); | |
1068 | ||
87a899c5 KW |
1069 | /* no id supplied -> create one */ |
1070 | if (qemu_opts_id(all_opts) == NULL) { | |
1071 | char *new_id; | |
1072 | const char *mediastr = ""; | |
1073 | if (type == IF_IDE || type == IF_SCSI) { | |
1074 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
1075 | } | |
1076 | if (max_devs) { | |
1077 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
1078 | mediastr, unit_id); | |
1079 | } else { | |
1080 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
1081 | mediastr, unit_id); | |
1082 | } | |
1083 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
1084 | g_free(new_id); | |
1085 | } | |
1086 | ||
394c7d4d KW |
1087 | /* Add virtio block device */ |
1088 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
1089 | if (devaddr && type != IF_VIRTIO) { | |
1090 | error_report("addr is not supported by this bus type"); | |
1091 | goto fail; | |
1092 | } | |
1093 | ||
1094 | if (type == IF_VIRTIO) { | |
1095 | QemuOpts *devopts; | |
87ea75d5 PC |
1096 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
1097 | &error_abort); | |
394c7d4d | 1098 | if (arch_type == QEMU_ARCH_S390X) { |
1f68f1d3 | 1099 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
394c7d4d | 1100 | } else { |
f43e47db | 1101 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
394c7d4d | 1102 | } |
f43e47db MA |
1103 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
1104 | &error_abort); | |
394c7d4d | 1105 | if (devaddr) { |
f43e47db | 1106 | qemu_opt_set(devopts, "addr", devaddr, &error_abort); |
394c7d4d KW |
1107 | } |
1108 | } | |
1109 | ||
d095b465 HR |
1110 | filename = qemu_opt_get(legacy_opts, "file"); |
1111 | ||
ee13ed1c KW |
1112 | /* Check werror/rerror compatibility with if=... */ |
1113 | werror = qemu_opt_get(legacy_opts, "werror"); | |
1114 | if (werror != NULL) { | |
1115 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
1116 | type != IF_NONE) { | |
1117 | error_report("werror is not supported by this bus type"); | |
1118 | goto fail; | |
1119 | } | |
1120 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); | |
1121 | } | |
1122 | ||
1123 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
1124 | if (rerror != NULL) { | |
1125 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
1126 | type != IF_NONE) { | |
1127 | error_report("rerror is not supported by this bus type"); | |
1128 | goto fail; | |
1129 | } | |
1130 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); | |
1131 | } | |
1132 | ||
2d246f01 | 1133 | /* Actual block device init: Functionality shared with blockdev-add */ |
18e46a03 | 1134 | blk = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 1135 | bs_opts = NULL; |
18e46a03 | 1136 | if (!blk) { |
84d18f06 | 1137 | if (local_err) { |
565f65d2 | 1138 | error_report_err(local_err); |
b681072d | 1139 | } |
2d246f01 | 1140 | goto fail; |
b681072d | 1141 | } else { |
84d18f06 | 1142 | assert(!local_err); |
2d246f01 KW |
1143 | } |
1144 | ||
26f8b3a8 MA |
1145 | /* Create legacy DriveInfo */ |
1146 | dinfo = g_malloc0(sizeof(*dinfo)); | |
f298d071 | 1147 | dinfo->opts = all_opts; |
2d246f01 | 1148 | |
b41a7338 KW |
1149 | dinfo->cyls = cyls; |
1150 | dinfo->heads = heads; | |
1151 | dinfo->secs = secs; | |
1152 | dinfo->trans = translation; | |
1153 | ||
ee13ed1c | 1154 | dinfo->type = type; |
87a899c5 KW |
1155 | dinfo->bus = bus_id; |
1156 | dinfo->unit = unit_id; | |
394c7d4d | 1157 | dinfo->devaddr = devaddr; |
bcf83158 KW |
1158 | dinfo->serial = g_strdup(serial); |
1159 | ||
26f8b3a8 MA |
1160 | blk_set_legacy_dinfo(blk, dinfo); |
1161 | ||
e34ef046 KW |
1162 | switch(type) { |
1163 | case IF_IDE: | |
1164 | case IF_SCSI: | |
1165 | case IF_XEN: | |
1166 | case IF_NONE: | |
1167 | dinfo->media_cd = media == MEDIA_CDROM; | |
1168 | break; | |
1169 | default: | |
1170 | break; | |
1171 | } | |
1172 | ||
2d246f01 | 1173 | fail: |
33cb7dc8 | 1174 | qemu_opts_del(legacy_opts); |
3cb0e25c | 1175 | QDECREF(bs_opts); |
2d246f01 | 1176 | return dinfo; |
57975222 KW |
1177 | } |
1178 | ||
3e5a50d6 | 1179 | void hmp_commit(Monitor *mon, const QDict *qdict) |
666daa68 | 1180 | { |
666daa68 | 1181 | const char *device = qdict_get_str(qdict, "device"); |
a0e8544c | 1182 | BlockBackend *blk; |
e8877497 | 1183 | int ret; |
666daa68 | 1184 | |
6ab4b5ab | 1185 | if (!strcmp(device, "all")) { |
da31d594 | 1186 | ret = blk_commit_all(); |
6ab4b5ab | 1187 | } else { |
84aa0140 SH |
1188 | BlockDriverState *bs; |
1189 | AioContext *aio_context; | |
1190 | ||
a0e8544c FZ |
1191 | blk = blk_by_name(device); |
1192 | if (!blk) { | |
58513bde | 1193 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 1194 | return; |
6ab4b5ab | 1195 | } |
5433c24f HR |
1196 | if (!blk_is_available(blk)) { |
1197 | monitor_printf(mon, "Device '%s' has no medium\n", device); | |
1198 | return; | |
1199 | } | |
84aa0140 SH |
1200 | |
1201 | bs = blk_bs(blk); | |
1202 | aio_context = bdrv_get_aio_context(bs); | |
1203 | aio_context_acquire(aio_context); | |
1204 | ||
1205 | ret = bdrv_commit(bs); | |
1206 | ||
1207 | aio_context_release(aio_context); | |
58513bde JC |
1208 | } |
1209 | if (ret < 0) { | |
1210 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
1211 | strerror(-ret)); | |
666daa68 MA |
1212 | } |
1213 | } | |
1214 | ||
10f75907 | 1215 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
6cc2a415 | 1216 | { |
c8a83e85 | 1217 | TransactionActionList list; |
6cc2a415 | 1218 | |
10f75907 | 1219 | list.value = action; |
6cc2a415 | 1220 | list.next = NULL; |
94d16a64 | 1221 | qmp_transaction(&list, false, NULL, errp); |
6cc2a415 PB |
1222 | } |
1223 | ||
0901f67e BC |
1224 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1225 | bool has_node_name, const char *node_name, | |
1226 | const char *snapshot_file, | |
1227 | bool has_snapshot_node_name, | |
1228 | const char *snapshot_node_name, | |
6106e249 | 1229 | bool has_format, const char *format, |
0901f67e | 1230 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1231 | { |
a911e6ae | 1232 | BlockdevSnapshotSync snapshot = { |
0901f67e | 1233 | .has_device = has_device, |
6cc2a415 | 1234 | .device = (char *) device, |
0901f67e BC |
1235 | .has_node_name = has_node_name, |
1236 | .node_name = (char *) node_name, | |
6cc2a415 | 1237 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1238 | .has_snapshot_node_name = has_snapshot_node_name, |
1239 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1240 | .has_format = has_format, |
1241 | .format = (char *) format, | |
1242 | .has_mode = has_mode, | |
1243 | .mode = mode, | |
1244 | }; | |
10f75907 EB |
1245 | TransactionAction action = { |
1246 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, | |
32bafa8f | 1247 | .u.blockdev_snapshot_sync.data = &snapshot, |
10f75907 EB |
1248 | }; |
1249 | blockdev_do_action(&action, errp); | |
f8882568 JS |
1250 | } |
1251 | ||
43de7e2d AG |
1252 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
1253 | Error **errp) | |
1254 | { | |
1255 | BlockdevSnapshot snapshot_data = { | |
1256 | .node = (char *) node, | |
1257 | .overlay = (char *) overlay | |
1258 | }; | |
10f75907 EB |
1259 | TransactionAction action = { |
1260 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, | |
32bafa8f | 1261 | .u.blockdev_snapshot.data = &snapshot_data, |
10f75907 EB |
1262 | }; |
1263 | blockdev_do_action(&action, errp); | |
43de7e2d AG |
1264 | } |
1265 | ||
f323bc9e WX |
1266 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1267 | const char *name, | |
1268 | Error **errp) | |
1269 | { | |
1270 | BlockdevSnapshotInternal snapshot = { | |
1271 | .device = (char *) device, | |
1272 | .name = (char *) name | |
1273 | }; | |
10f75907 EB |
1274 | TransactionAction action = { |
1275 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
32bafa8f | 1276 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
10f75907 EB |
1277 | }; |
1278 | blockdev_do_action(&action, errp); | |
f323bc9e WX |
1279 | } |
1280 | ||
44e3e053 WX |
1281 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1282 | bool has_id, | |
1283 | const char *id, | |
1284 | bool has_name, | |
1285 | const char *name, | |
1286 | Error **errp) | |
1287 | { | |
a0e8544c FZ |
1288 | BlockDriverState *bs; |
1289 | BlockBackend *blk; | |
4ef3982a | 1290 | AioContext *aio_context; |
44e3e053 WX |
1291 | QEMUSnapshotInfo sn; |
1292 | Error *local_err = NULL; | |
1293 | SnapshotInfo *info = NULL; | |
1294 | int ret; | |
1295 | ||
a0e8544c FZ |
1296 | blk = blk_by_name(device); |
1297 | if (!blk) { | |
75158ebb MA |
1298 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1299 | "Device '%s' not found", device); | |
44e3e053 WX |
1300 | return NULL; |
1301 | } | |
5433c24f HR |
1302 | |
1303 | aio_context = blk_get_aio_context(blk); | |
1304 | aio_context_acquire(aio_context); | |
44e3e053 WX |
1305 | |
1306 | if (!has_id) { | |
1307 | id = NULL; | |
1308 | } | |
1309 | ||
1310 | if (!has_name) { | |
1311 | name = NULL; | |
1312 | } | |
1313 | ||
1314 | if (!id && !name) { | |
1315 | error_setg(errp, "Name or id must be provided"); | |
5433c24f | 1316 | goto out_aio_context; |
44e3e053 WX |
1317 | } |
1318 | ||
5433c24f HR |
1319 | if (!blk_is_available(blk)) { |
1320 | error_setg(errp, "Device '%s' has no medium", device); | |
1321 | goto out_aio_context; | |
1322 | } | |
1323 | bs = blk_bs(blk); | |
4ef3982a | 1324 | |
0b928854 SH |
1325 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
1326 | goto out_aio_context; | |
1327 | } | |
1328 | ||
44e3e053 | 1329 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
84d18f06 | 1330 | if (local_err) { |
44e3e053 | 1331 | error_propagate(errp, local_err); |
4ef3982a | 1332 | goto out_aio_context; |
44e3e053 WX |
1333 | } |
1334 | if (!ret) { | |
1335 | error_setg(errp, | |
1336 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1337 | "device '%s'", | |
1338 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
4ef3982a | 1339 | goto out_aio_context; |
44e3e053 WX |
1340 | } |
1341 | ||
1342 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1343 | if (local_err) { |
44e3e053 | 1344 | error_propagate(errp, local_err); |
4ef3982a | 1345 | goto out_aio_context; |
44e3e053 WX |
1346 | } |
1347 | ||
4ef3982a SH |
1348 | aio_context_release(aio_context); |
1349 | ||
5839e53b | 1350 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1351 | info->id = g_strdup(sn.id_str); |
1352 | info->name = g_strdup(sn.name); | |
1353 | info->date_nsec = sn.date_nsec; | |
1354 | info->date_sec = sn.date_sec; | |
1355 | info->vm_state_size = sn.vm_state_size; | |
1356 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1357 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1358 | ||
1359 | return info; | |
4ef3982a SH |
1360 | |
1361 | out_aio_context: | |
1362 | aio_context_release(aio_context); | |
1363 | return NULL; | |
44e3e053 | 1364 | } |
8802d1fd | 1365 | |
341ebc2f JS |
1366 | /** |
1367 | * block_dirty_bitmap_lookup: | |
1368 | * Return a dirty bitmap (if present), after validating | |
1369 | * the node reference and bitmap names. | |
1370 | * | |
1371 | * @node: The name of the BDS node to search for bitmaps | |
1372 | * @name: The name of the bitmap to search for | |
1373 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. | |
1374 | * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL. | |
1375 | * @errp: Output pointer for error information. Can be NULL. | |
1376 | * | |
1377 | * @return: A bitmap object on success, or NULL on failure. | |
1378 | */ | |
1379 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, | |
1380 | const char *name, | |
1381 | BlockDriverState **pbs, | |
1382 | AioContext **paio, | |
1383 | Error **errp) | |
1384 | { | |
1385 | BlockDriverState *bs; | |
1386 | BdrvDirtyBitmap *bitmap; | |
1387 | AioContext *aio_context; | |
1388 | ||
1389 | if (!node) { | |
1390 | error_setg(errp, "Node cannot be NULL"); | |
1391 | return NULL; | |
1392 | } | |
1393 | if (!name) { | |
1394 | error_setg(errp, "Bitmap name cannot be NULL"); | |
1395 | return NULL; | |
1396 | } | |
1397 | bs = bdrv_lookup_bs(node, node, NULL); | |
1398 | if (!bs) { | |
1399 | error_setg(errp, "Node '%s' not found", node); | |
1400 | return NULL; | |
1401 | } | |
1402 | ||
1403 | aio_context = bdrv_get_aio_context(bs); | |
1404 | aio_context_acquire(aio_context); | |
1405 | ||
1406 | bitmap = bdrv_find_dirty_bitmap(bs, name); | |
1407 | if (!bitmap) { | |
1408 | error_setg(errp, "Dirty bitmap '%s' not found", name); | |
1409 | goto fail; | |
1410 | } | |
1411 | ||
1412 | if (pbs) { | |
1413 | *pbs = bs; | |
1414 | } | |
1415 | if (paio) { | |
1416 | *paio = aio_context; | |
1417 | } else { | |
1418 | aio_context_release(aio_context); | |
1419 | } | |
1420 | ||
1421 | return bitmap; | |
1422 | ||
1423 | fail: | |
1424 | aio_context_release(aio_context); | |
1425 | return NULL; | |
1426 | } | |
1427 | ||
b756b9ce | 1428 | /* New and old BlockDriverState structs for atomic group operations */ |
ba0c86a3 | 1429 | |
50f43f0f | 1430 | typedef struct BlkActionState BlkActionState; |
ba0c86a3 | 1431 | |
50f43f0f JS |
1432 | /** |
1433 | * BlkActionOps: | |
1434 | * Table of operations that define an Action. | |
1435 | * | |
1436 | * @instance_size: Size of state struct, in bytes. | |
1437 | * @prepare: Prepare the work, must NOT be NULL. | |
1438 | * @commit: Commit the changes, can be NULL. | |
1439 | * @abort: Abort the changes on fail, can be NULL. | |
1440 | * @clean: Clean up resources after all transaction actions have called | |
1441 | * commit() or abort(). Can be NULL. | |
1442 | * | |
1443 | * Only prepare() may fail. In a single transaction, only one of commit() or | |
1444 | * abort() will be called. clean() will always be called if it is present. | |
1445 | */ | |
1446 | typedef struct BlkActionOps { | |
ba0c86a3 | 1447 | size_t instance_size; |
50f43f0f JS |
1448 | void (*prepare)(BlkActionState *common, Error **errp); |
1449 | void (*commit)(BlkActionState *common); | |
1450 | void (*abort)(BlkActionState *common); | |
1451 | void (*clean)(BlkActionState *common); | |
1452 | } BlkActionOps; | |
ba0c86a3 | 1453 | |
50f43f0f JS |
1454 | /** |
1455 | * BlkActionState: | |
1456 | * Describes one Action's state within a Transaction. | |
1457 | * | |
1458 | * @action: QAPI-defined enum identifying which Action to perform. | |
1459 | * @ops: Table of ActionOps this Action can perform. | |
94d16a64 | 1460 | * @block_job_txn: Transaction which this action belongs to. |
50f43f0f JS |
1461 | * @entry: List membership for all Actions in this Transaction. |
1462 | * | |
1463 | * This structure must be arranged as first member in a subclassed type, | |
1464 | * assuming that the compiler will also arrange it to the same offsets as the | |
1465 | * base class. | |
ba0c86a3 | 1466 | */ |
50f43f0f | 1467 | struct BlkActionState { |
c8a83e85 | 1468 | TransactionAction *action; |
50f43f0f | 1469 | const BlkActionOps *ops; |
94d16a64 JS |
1470 | BlockJobTxn *block_job_txn; |
1471 | TransactionProperties *txn_props; | |
50f43f0f | 1472 | QSIMPLEQ_ENTRY(BlkActionState) entry; |
ba0c86a3 WX |
1473 | }; |
1474 | ||
bbe86010 WX |
1475 | /* internal snapshot private data */ |
1476 | typedef struct InternalSnapshotState { | |
50f43f0f | 1477 | BlkActionState common; |
bbe86010 | 1478 | BlockDriverState *bs; |
5d6e96ef | 1479 | AioContext *aio_context; |
bbe86010 | 1480 | QEMUSnapshotInfo sn; |
507306cc | 1481 | bool created; |
bbe86010 WX |
1482 | } InternalSnapshotState; |
1483 | ||
94d16a64 JS |
1484 | |
1485 | static int action_check_completion_mode(BlkActionState *s, Error **errp) | |
1486 | { | |
1487 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
1488 | error_setg(errp, | |
1489 | "Action '%s' does not support Transaction property " | |
1490 | "completion-mode = %s", | |
1491 | TransactionActionKind_lookup[s->action->type], | |
1492 | ActionCompletionMode_lookup[s->txn_props->completion_mode]); | |
1493 | return -1; | |
1494 | } | |
1495 | return 0; | |
1496 | } | |
1497 | ||
50f43f0f | 1498 | static void internal_snapshot_prepare(BlkActionState *common, |
bbe86010 WX |
1499 | Error **errp) |
1500 | { | |
f70edf99 | 1501 | Error *local_err = NULL; |
bbe86010 WX |
1502 | const char *device; |
1503 | const char *name; | |
a0e8544c | 1504 | BlockBackend *blk; |
bbe86010 WX |
1505 | BlockDriverState *bs; |
1506 | QEMUSnapshotInfo old_sn, *sn; | |
1507 | bool ret; | |
1508 | qemu_timeval tv; | |
1509 | BlockdevSnapshotInternal *internal; | |
1510 | InternalSnapshotState *state; | |
1511 | int ret1; | |
1512 | ||
6a8f9661 | 1513 | g_assert(common->action->type == |
bbe86010 | 1514 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
32bafa8f | 1515 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
bbe86010 WX |
1516 | state = DO_UPCAST(InternalSnapshotState, common, common); |
1517 | ||
1518 | /* 1. parse input */ | |
1519 | device = internal->device; | |
1520 | name = internal->name; | |
1521 | ||
1522 | /* 2. check for validation */ | |
94d16a64 JS |
1523 | if (action_check_completion_mode(common, errp) < 0) { |
1524 | return; | |
1525 | } | |
1526 | ||
a0e8544c FZ |
1527 | blk = blk_by_name(device); |
1528 | if (!blk) { | |
75158ebb MA |
1529 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1530 | "Device '%s' not found", device); | |
bbe86010 WX |
1531 | return; |
1532 | } | |
1533 | ||
5d6e96ef | 1534 | /* AioContext is released in .clean() */ |
5433c24f | 1535 | state->aio_context = blk_get_aio_context(blk); |
5d6e96ef SH |
1536 | aio_context_acquire(state->aio_context); |
1537 | ||
5433c24f | 1538 | if (!blk_is_available(blk)) { |
c6bd8c70 | 1539 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
bbe86010 WX |
1540 | return; |
1541 | } | |
5433c24f | 1542 | bs = blk_bs(blk); |
bbe86010 | 1543 | |
507306cc FZ |
1544 | state->bs = bs; |
1545 | bdrv_drained_begin(bs); | |
1546 | ||
3dc7ca3c SH |
1547 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
1548 | return; | |
1549 | } | |
1550 | ||
bbe86010 | 1551 | if (bdrv_is_read_only(bs)) { |
81e5f78a | 1552 | error_setg(errp, "Device '%s' is read only", device); |
bbe86010 WX |
1553 | return; |
1554 | } | |
1555 | ||
1556 | if (!bdrv_can_snapshot(bs)) { | |
81e5f78a AG |
1557 | error_setg(errp, "Block format '%s' used by device '%s' " |
1558 | "does not support internal snapshots", | |
1559 | bs->drv->format_name, device); | |
bbe86010 WX |
1560 | return; |
1561 | } | |
1562 | ||
1563 | if (!strlen(name)) { | |
1564 | error_setg(errp, "Name is empty"); | |
1565 | return; | |
1566 | } | |
1567 | ||
1568 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1569 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1570 | &local_err); | |
1571 | if (local_err) { | |
1572 | error_propagate(errp, local_err); | |
bbe86010 WX |
1573 | return; |
1574 | } else if (ret) { | |
1575 | error_setg(errp, | |
1576 | "Snapshot with name '%s' already exists on device '%s'", | |
1577 | name, device); | |
1578 | return; | |
1579 | } | |
1580 | ||
1581 | /* 3. take the snapshot */ | |
1582 | sn = &state->sn; | |
1583 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1584 | qemu_gettimeofday(&tv); | |
1585 | sn->date_sec = tv.tv_sec; | |
1586 | sn->date_nsec = tv.tv_usec * 1000; | |
1587 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1588 | ||
1589 | ret1 = bdrv_snapshot_create(bs, sn); | |
1590 | if (ret1 < 0) { | |
1591 | error_setg_errno(errp, -ret1, | |
1592 | "Failed to create snapshot '%s' on device '%s'", | |
1593 | name, device); | |
1594 | return; | |
1595 | } | |
1596 | ||
1597 | /* 4. succeed, mark a snapshot is created */ | |
507306cc | 1598 | state->created = true; |
bbe86010 WX |
1599 | } |
1600 | ||
50f43f0f | 1601 | static void internal_snapshot_abort(BlkActionState *common) |
bbe86010 WX |
1602 | { |
1603 | InternalSnapshotState *state = | |
1604 | DO_UPCAST(InternalSnapshotState, common, common); | |
1605 | BlockDriverState *bs = state->bs; | |
1606 | QEMUSnapshotInfo *sn = &state->sn; | |
1607 | Error *local_error = NULL; | |
1608 | ||
507306cc | 1609 | if (!state->created) { |
bbe86010 WX |
1610 | return; |
1611 | } | |
1612 | ||
1613 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
c29b77f9 MA |
1614 | error_reportf_err(local_error, |
1615 | "Failed to delete snapshot with id '%s' and " | |
1616 | "name '%s' on device '%s' in abort: ", | |
1617 | sn->id_str, sn->name, | |
1618 | bdrv_get_device_name(bs)); | |
bbe86010 WX |
1619 | } |
1620 | } | |
1621 | ||
50f43f0f | 1622 | static void internal_snapshot_clean(BlkActionState *common) |
5d6e96ef SH |
1623 | { |
1624 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, | |
1625 | common, common); | |
1626 | ||
1627 | if (state->aio_context) { | |
507306cc FZ |
1628 | if (state->bs) { |
1629 | bdrv_drained_end(state->bs); | |
1630 | } | |
5d6e96ef SH |
1631 | aio_context_release(state->aio_context); |
1632 | } | |
1633 | } | |
1634 | ||
ba0c86a3 | 1635 | /* external snapshot private data */ |
ba5d6ab6 | 1636 | typedef struct ExternalSnapshotState { |
50f43f0f | 1637 | BlkActionState common; |
8802d1fd JC |
1638 | BlockDriverState *old_bs; |
1639 | BlockDriverState *new_bs; | |
5d6e96ef | 1640 | AioContext *aio_context; |
ba5d6ab6 | 1641 | } ExternalSnapshotState; |
8802d1fd | 1642 | |
50f43f0f | 1643 | static void external_snapshot_prepare(BlkActionState *common, |
9b9877ee WX |
1644 | Error **errp) |
1645 | { | |
43de7e2d AG |
1646 | int flags = 0, ret; |
1647 | QDict *options = NULL; | |
9b9877ee | 1648 | Error *local_err = NULL; |
43de7e2d | 1649 | /* Device and node name of the image to generate the snapshot from */ |
e2a31e87 | 1650 | const char *device; |
0901f67e | 1651 | const char *node_name; |
43de7e2d AG |
1652 | /* Reference to the new image (for 'blockdev-snapshot') */ |
1653 | const char *snapshot_ref; | |
1654 | /* File name of the new image (for 'blockdev-snapshot-sync') */ | |
e2a31e87 | 1655 | const char *new_image_file; |
ba5d6ab6 SH |
1656 | ExternalSnapshotState *state = |
1657 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1658 | TransactionAction *action = common->action; |
9b9877ee | 1659 | |
43de7e2d AG |
1660 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
1661 | * purpose but a different set of parameters */ | |
1662 | switch (action->type) { | |
1663 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: | |
1664 | { | |
32bafa8f | 1665 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
43de7e2d AG |
1666 | device = s->node; |
1667 | node_name = s->node; | |
1668 | new_image_file = NULL; | |
1669 | snapshot_ref = s->overlay; | |
1670 | } | |
1671 | break; | |
1672 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: | |
1673 | { | |
32bafa8f | 1674 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
43de7e2d AG |
1675 | device = s->has_device ? s->device : NULL; |
1676 | node_name = s->has_node_name ? s->node_name : NULL; | |
1677 | new_image_file = s->snapshot_file; | |
1678 | snapshot_ref = NULL; | |
1679 | } | |
1680 | break; | |
1681 | default: | |
1682 | g_assert_not_reached(); | |
e2a31e87 WX |
1683 | } |
1684 | ||
1685 | /* start processing */ | |
94d16a64 JS |
1686 | if (action_check_completion_mode(common, errp) < 0) { |
1687 | return; | |
1688 | } | |
1689 | ||
43de7e2d AG |
1690 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
1691 | if (!state->old_bs) { | |
9b9877ee WX |
1692 | return; |
1693 | } | |
1694 | ||
5d6e96ef SH |
1695 | /* Acquire AioContext now so any threads operating on old_bs stop */ |
1696 | state->aio_context = bdrv_get_aio_context(state->old_bs); | |
1697 | aio_context_acquire(state->aio_context); | |
da763e83 | 1698 | bdrv_drained_begin(state->old_bs); |
5d6e96ef | 1699 | |
ba5d6ab6 | 1700 | if (!bdrv_is_inserted(state->old_bs)) { |
c6bd8c70 | 1701 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
9b9877ee WX |
1702 | return; |
1703 | } | |
1704 | ||
3718d8ab FZ |
1705 | if (bdrv_op_is_blocked(state->old_bs, |
1706 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
9b9877ee WX |
1707 | return; |
1708 | } | |
1709 | ||
ba5d6ab6 SH |
1710 | if (!bdrv_is_read_only(state->old_bs)) { |
1711 | if (bdrv_flush(state->old_bs)) { | |
c6bd8c70 | 1712 | error_setg(errp, QERR_IO_ERROR); |
9b9877ee WX |
1713 | return; |
1714 | } | |
1715 | } | |
1716 | ||
212a5a8f | 1717 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
c6bd8c70 | 1718 | error_setg(errp, QERR_FEATURE_DISABLED, "snapshot"); |
f6186f49 BC |
1719 | return; |
1720 | } | |
1721 | ||
43de7e2d | 1722 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
32bafa8f | 1723 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
43de7e2d AG |
1724 | const char *format = s->has_format ? s->format : "qcow2"; |
1725 | enum NewImageMode mode; | |
1726 | const char *snapshot_node_name = | |
1727 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; | |
9b9877ee | 1728 | |
43de7e2d AG |
1729 | if (node_name && !snapshot_node_name) { |
1730 | error_setg(errp, "New snapshot node name missing"); | |
9b9877ee WX |
1731 | return; |
1732 | } | |
9b9877ee | 1733 | |
43de7e2d AG |
1734 | if (snapshot_node_name && |
1735 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { | |
1736 | error_setg(errp, "New snapshot node name already in use"); | |
1737 | return; | |
1738 | } | |
1739 | ||
1740 | flags = state->old_bs->open_flags; | |
4c844983 | 1741 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | BDRV_O_COPY_ON_READ); |
43de7e2d AG |
1742 | |
1743 | /* create new image w/backing file */ | |
1744 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1745 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
f86b8b58 KW |
1746 | int64_t size = bdrv_getlength(state->old_bs); |
1747 | if (size < 0) { | |
1748 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1749 | return; | |
1750 | } | |
43de7e2d AG |
1751 | bdrv_img_create(new_image_file, format, |
1752 | state->old_bs->filename, | |
1753 | state->old_bs->drv->format_name, | |
f86b8b58 | 1754 | NULL, size, flags, &local_err, false); |
43de7e2d AG |
1755 | if (local_err) { |
1756 | error_propagate(errp, local_err); | |
1757 | return; | |
1758 | } | |
1759 | } | |
1760 | ||
1761 | options = qdict_new(); | |
1762 | if (s->has_snapshot_node_name) { | |
1763 | qdict_put(options, "node-name", | |
1764 | qstring_from_str(snapshot_node_name)); | |
1765 | } | |
1766 | qdict_put(options, "driver", qstring_from_str(format)); | |
1767 | ||
1768 | flags |= BDRV_O_NO_BACKING; | |
0901f67e BC |
1769 | } |
1770 | ||
f67503e5 | 1771 | assert(state->new_bs == NULL); |
43de7e2d AG |
1772 | ret = bdrv_open(&state->new_bs, new_image_file, snapshot_ref, options, |
1773 | flags, errp); | |
f67503e5 | 1774 | /* We will manually add the backing_hd field to the bs later */ |
9b9877ee | 1775 | if (ret != 0) { |
43de7e2d AG |
1776 | return; |
1777 | } | |
1778 | ||
1f0c461b | 1779 | if (bdrv_has_blk(state->new_bs)) { |
43de7e2d | 1780 | error_setg(errp, "The snapshot is already in use by %s", |
1f0c461b | 1781 | bdrv_get_parent_name(state->new_bs)); |
43de7e2d AG |
1782 | return; |
1783 | } | |
1784 | ||
1785 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, | |
1786 | errp)) { | |
1787 | return; | |
1788 | } | |
1789 | ||
1790 | if (state->new_bs->backing != NULL) { | |
1791 | error_setg(errp, "The snapshot already has a backing image"); | |
08b24cfe AG |
1792 | return; |
1793 | } | |
1794 | ||
1795 | if (!state->new_bs->drv->supports_backing) { | |
1796 | error_setg(errp, "The snapshot does not support backing images"); | |
9b9877ee WX |
1797 | } |
1798 | } | |
1799 | ||
50f43f0f | 1800 | static void external_snapshot_commit(BlkActionState *common) |
3b0047e8 | 1801 | { |
ba5d6ab6 SH |
1802 | ExternalSnapshotState *state = |
1803 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1804 | |
5d6e96ef SH |
1805 | bdrv_set_aio_context(state->new_bs, state->aio_context); |
1806 | ||
ba5d6ab6 SH |
1807 | /* This removes our old bs and adds the new bs */ |
1808 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1809 | /* We don't need (or want) to use the transactional |
1810 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1811 | * don't want to abort all of them if one of them fails the reopen */ | |
4c844983 KW |
1812 | if (!state->old_bs->copy_on_read) { |
1813 | bdrv_reopen(state->old_bs, state->old_bs->open_flags & ~BDRV_O_RDWR, | |
1814 | NULL); | |
1815 | } | |
3b0047e8 WX |
1816 | } |
1817 | ||
50f43f0f | 1818 | static void external_snapshot_abort(BlkActionState *common) |
96b86bf7 | 1819 | { |
ba5d6ab6 SH |
1820 | ExternalSnapshotState *state = |
1821 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1822 | if (state->new_bs) { | |
4f6fd349 | 1823 | bdrv_unref(state->new_bs); |
96b86bf7 | 1824 | } |
da763e83 FZ |
1825 | } |
1826 | ||
50f43f0f | 1827 | static void external_snapshot_clean(BlkActionState *common) |
da763e83 FZ |
1828 | { |
1829 | ExternalSnapshotState *state = | |
1830 | DO_UPCAST(ExternalSnapshotState, common, common); | |
5d6e96ef | 1831 | if (state->aio_context) { |
da763e83 | 1832 | bdrv_drained_end(state->old_bs); |
5d6e96ef SH |
1833 | aio_context_release(state->aio_context); |
1834 | } | |
96b86bf7 WX |
1835 | } |
1836 | ||
3037f364 | 1837 | typedef struct DriveBackupState { |
50f43f0f | 1838 | BlkActionState common; |
3037f364 | 1839 | BlockDriverState *bs; |
5d6e96ef | 1840 | AioContext *aio_context; |
3037f364 SH |
1841 | BlockJob *job; |
1842 | } DriveBackupState; | |
1843 | ||
78f51fde JS |
1844 | static void do_drive_backup(const char *device, const char *target, |
1845 | bool has_format, const char *format, | |
1846 | enum MirrorSyncMode sync, | |
1847 | bool has_mode, enum NewImageMode mode, | |
1848 | bool has_speed, int64_t speed, | |
1849 | bool has_bitmap, const char *bitmap, | |
1850 | bool has_on_source_error, | |
1851 | BlockdevOnError on_source_error, | |
1852 | bool has_on_target_error, | |
1853 | BlockdevOnError on_target_error, | |
1854 | BlockJobTxn *txn, Error **errp); | |
1855 | ||
50f43f0f | 1856 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
3037f364 SH |
1857 | { |
1858 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
a0e8544c | 1859 | BlockBackend *blk; |
3037f364 SH |
1860 | DriveBackup *backup; |
1861 | Error *local_err = NULL; | |
1862 | ||
6a8f9661 | 1863 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
32bafa8f | 1864 | backup = common->action->u.drive_backup.data; |
3037f364 | 1865 | |
a0e8544c FZ |
1866 | blk = blk_by_name(backup->device); |
1867 | if (!blk) { | |
75158ebb MA |
1868 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1869 | "Device '%s' not found", backup->device); | |
5d6e96ef SH |
1870 | return; |
1871 | } | |
1872 | ||
1fdd4b7b FZ |
1873 | if (!blk_is_available(blk)) { |
1874 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); | |
1875 | return; | |
1876 | } | |
1877 | ||
5d6e96ef | 1878 | /* AioContext is released in .clean() */ |
5433c24f | 1879 | state->aio_context = blk_get_aio_context(blk); |
5d6e96ef | 1880 | aio_context_acquire(state->aio_context); |
1fdd4b7b FZ |
1881 | bdrv_drained_begin(blk_bs(blk)); |
1882 | state->bs = blk_bs(blk); | |
5d6e96ef | 1883 | |
78f51fde JS |
1884 | do_drive_backup(backup->device, backup->target, |
1885 | backup->has_format, backup->format, | |
1886 | backup->sync, | |
1887 | backup->has_mode, backup->mode, | |
1888 | backup->has_speed, backup->speed, | |
1889 | backup->has_bitmap, backup->bitmap, | |
1890 | backup->has_on_source_error, backup->on_source_error, | |
1891 | backup->has_on_target_error, backup->on_target_error, | |
94d16a64 | 1892 | common->block_job_txn, &local_err); |
84d18f06 | 1893 | if (local_err) { |
3037f364 | 1894 | error_propagate(errp, local_err); |
3037f364 SH |
1895 | return; |
1896 | } | |
1897 | ||
3037f364 SH |
1898 | state->job = state->bs->job; |
1899 | } | |
1900 | ||
50f43f0f | 1901 | static void drive_backup_abort(BlkActionState *common) |
3037f364 SH |
1902 | { |
1903 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1904 | BlockDriverState *bs = state->bs; | |
1905 | ||
1906 | /* Only cancel if it's the job we started */ | |
1907 | if (bs && bs->job && bs->job == state->job) { | |
1908 | block_job_cancel_sync(bs->job); | |
1909 | } | |
1910 | } | |
1911 | ||
50f43f0f | 1912 | static void drive_backup_clean(BlkActionState *common) |
5d6e96ef SH |
1913 | { |
1914 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1915 | ||
1916 | if (state->aio_context) { | |
1fdd4b7b | 1917 | bdrv_drained_end(state->bs); |
5d6e96ef SH |
1918 | aio_context_release(state->aio_context); |
1919 | } | |
1920 | } | |
1921 | ||
bd8baecd | 1922 | typedef struct BlockdevBackupState { |
50f43f0f | 1923 | BlkActionState common; |
bd8baecd FZ |
1924 | BlockDriverState *bs; |
1925 | BlockJob *job; | |
1926 | AioContext *aio_context; | |
1927 | } BlockdevBackupState; | |
1928 | ||
78f51fde JS |
1929 | static void do_blockdev_backup(const char *device, const char *target, |
1930 | enum MirrorSyncMode sync, | |
1931 | bool has_speed, int64_t speed, | |
1932 | bool has_on_source_error, | |
1933 | BlockdevOnError on_source_error, | |
1934 | bool has_on_target_error, | |
1935 | BlockdevOnError on_target_error, | |
1936 | BlockJobTxn *txn, Error **errp); | |
1937 | ||
50f43f0f | 1938 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
bd8baecd FZ |
1939 | { |
1940 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1941 | BlockdevBackup *backup; | |
5433c24f | 1942 | BlockBackend *blk, *target; |
bd8baecd FZ |
1943 | Error *local_err = NULL; |
1944 | ||
6a8f9661 | 1945 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
32bafa8f | 1946 | backup = common->action->u.blockdev_backup.data; |
bd8baecd | 1947 | |
a0e8544c FZ |
1948 | blk = blk_by_name(backup->device); |
1949 | if (!blk) { | |
5b347c54 | 1950 | error_setg(errp, "Device '%s' not found", backup->device); |
bd8baecd FZ |
1951 | return; |
1952 | } | |
1953 | ||
ff52bf36 FZ |
1954 | if (!blk_is_available(blk)) { |
1955 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); | |
1956 | return; | |
1957 | } | |
1958 | ||
5433c24f HR |
1959 | target = blk_by_name(backup->target); |
1960 | if (!target) { | |
5b347c54 | 1961 | error_setg(errp, "Device '%s' not found", backup->target); |
bd8baecd FZ |
1962 | return; |
1963 | } | |
1964 | ||
1965 | /* AioContext is released in .clean() */ | |
5433c24f HR |
1966 | state->aio_context = blk_get_aio_context(blk); |
1967 | if (state->aio_context != blk_get_aio_context(target)) { | |
bd8baecd FZ |
1968 | state->aio_context = NULL; |
1969 | error_setg(errp, "Backup between two IO threads is not implemented"); | |
1970 | return; | |
1971 | } | |
1972 | aio_context_acquire(state->aio_context); | |
ff52bf36 FZ |
1973 | state->bs = blk_bs(blk); |
1974 | bdrv_drained_begin(state->bs); | |
bd8baecd | 1975 | |
78f51fde JS |
1976 | do_blockdev_backup(backup->device, backup->target, |
1977 | backup->sync, | |
1978 | backup->has_speed, backup->speed, | |
1979 | backup->has_on_source_error, backup->on_source_error, | |
1980 | backup->has_on_target_error, backup->on_target_error, | |
94d16a64 | 1981 | common->block_job_txn, &local_err); |
bd8baecd FZ |
1982 | if (local_err) { |
1983 | error_propagate(errp, local_err); | |
1984 | return; | |
1985 | } | |
1986 | ||
bd8baecd FZ |
1987 | state->job = state->bs->job; |
1988 | } | |
1989 | ||
50f43f0f | 1990 | static void blockdev_backup_abort(BlkActionState *common) |
bd8baecd FZ |
1991 | { |
1992 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1993 | BlockDriverState *bs = state->bs; | |
1994 | ||
1995 | /* Only cancel if it's the job we started */ | |
1996 | if (bs && bs->job && bs->job == state->job) { | |
1997 | block_job_cancel_sync(bs->job); | |
1998 | } | |
1999 | } | |
2000 | ||
50f43f0f | 2001 | static void blockdev_backup_clean(BlkActionState *common) |
bd8baecd FZ |
2002 | { |
2003 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
2004 | ||
2005 | if (state->aio_context) { | |
ff52bf36 | 2006 | bdrv_drained_end(state->bs); |
bd8baecd FZ |
2007 | aio_context_release(state->aio_context); |
2008 | } | |
2009 | } | |
2010 | ||
df9a681d | 2011 | typedef struct BlockDirtyBitmapState { |
50f43f0f | 2012 | BlkActionState common; |
df9a681d FZ |
2013 | BdrvDirtyBitmap *bitmap; |
2014 | BlockDriverState *bs; | |
2015 | AioContext *aio_context; | |
2016 | HBitmap *backup; | |
2017 | bool prepared; | |
2018 | } BlockDirtyBitmapState; | |
2019 | ||
50f43f0f | 2020 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
df9a681d FZ |
2021 | Error **errp) |
2022 | { | |
2023 | Error *local_err = NULL; | |
2024 | BlockDirtyBitmapAdd *action; | |
2025 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2026 | common, common); | |
2027 | ||
94d16a64 JS |
2028 | if (action_check_completion_mode(common, errp) < 0) { |
2029 | return; | |
2030 | } | |
2031 | ||
32bafa8f | 2032 | action = common->action->u.block_dirty_bitmap_add.data; |
df9a681d FZ |
2033 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
2034 | qmp_block_dirty_bitmap_add(action->node, action->name, | |
2035 | action->has_granularity, action->granularity, | |
2036 | &local_err); | |
2037 | ||
2038 | if (!local_err) { | |
2039 | state->prepared = true; | |
2040 | } else { | |
2041 | error_propagate(errp, local_err); | |
2042 | } | |
2043 | } | |
2044 | ||
50f43f0f | 2045 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
df9a681d FZ |
2046 | { |
2047 | BlockDirtyBitmapAdd *action; | |
2048 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2049 | common, common); | |
2050 | ||
32bafa8f | 2051 | action = common->action->u.block_dirty_bitmap_add.data; |
df9a681d FZ |
2052 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
2053 | * then the node reference and bitmap name must have been valid. | |
2054 | */ | |
2055 | if (state->prepared) { | |
2056 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); | |
2057 | } | |
2058 | } | |
2059 | ||
50f43f0f | 2060 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
df9a681d FZ |
2061 | Error **errp) |
2062 | { | |
2063 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2064 | common, common); | |
2065 | BlockDirtyBitmap *action; | |
2066 | ||
94d16a64 JS |
2067 | if (action_check_completion_mode(common, errp) < 0) { |
2068 | return; | |
2069 | } | |
2070 | ||
32bafa8f | 2071 | action = common->action->u.block_dirty_bitmap_clear.data; |
df9a681d FZ |
2072 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
2073 | action->name, | |
2074 | &state->bs, | |
2075 | &state->aio_context, | |
2076 | errp); | |
2077 | if (!state->bitmap) { | |
2078 | return; | |
2079 | } | |
2080 | ||
2081 | if (bdrv_dirty_bitmap_frozen(state->bitmap)) { | |
2082 | error_setg(errp, "Cannot modify a frozen bitmap"); | |
2083 | return; | |
2084 | } else if (!bdrv_dirty_bitmap_enabled(state->bitmap)) { | |
2085 | error_setg(errp, "Cannot clear a disabled bitmap"); | |
2086 | return; | |
2087 | } | |
2088 | ||
2089 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); | |
2090 | /* AioContext is released in .clean() */ | |
2091 | } | |
2092 | ||
50f43f0f | 2093 | static void block_dirty_bitmap_clear_abort(BlkActionState *common) |
df9a681d FZ |
2094 | { |
2095 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2096 | common, common); | |
2097 | ||
2098 | bdrv_undo_clear_dirty_bitmap(state->bitmap, state->backup); | |
2099 | } | |
2100 | ||
50f43f0f | 2101 | static void block_dirty_bitmap_clear_commit(BlkActionState *common) |
df9a681d FZ |
2102 | { |
2103 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2104 | common, common); | |
2105 | ||
2106 | hbitmap_free(state->backup); | |
2107 | } | |
2108 | ||
50f43f0f | 2109 | static void block_dirty_bitmap_clear_clean(BlkActionState *common) |
df9a681d FZ |
2110 | { |
2111 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2112 | common, common); | |
2113 | ||
2114 | if (state->aio_context) { | |
2115 | aio_context_release(state->aio_context); | |
2116 | } | |
2117 | } | |
2118 | ||
50f43f0f | 2119 | static void abort_prepare(BlkActionState *common, Error **errp) |
78b18b78 SH |
2120 | { |
2121 | error_setg(errp, "Transaction aborted using Abort action"); | |
2122 | } | |
2123 | ||
50f43f0f | 2124 | static void abort_commit(BlkActionState *common) |
78b18b78 | 2125 | { |
dfc6f865 | 2126 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
2127 | } |
2128 | ||
50f43f0f | 2129 | static const BlkActionOps actions[] = { |
43de7e2d AG |
2130 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
2131 | .instance_size = sizeof(ExternalSnapshotState), | |
2132 | .prepare = external_snapshot_prepare, | |
2133 | .commit = external_snapshot_commit, | |
2134 | .abort = external_snapshot_abort, | |
4ad6f3db | 2135 | .clean = external_snapshot_clean, |
43de7e2d | 2136 | }, |
c8a83e85 | 2137 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 2138 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
2139 | .prepare = external_snapshot_prepare, |
2140 | .commit = external_snapshot_commit, | |
2141 | .abort = external_snapshot_abort, | |
da763e83 | 2142 | .clean = external_snapshot_clean, |
ba0c86a3 | 2143 | }, |
3037f364 SH |
2144 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
2145 | .instance_size = sizeof(DriveBackupState), | |
2146 | .prepare = drive_backup_prepare, | |
2147 | .abort = drive_backup_abort, | |
5d6e96ef | 2148 | .clean = drive_backup_clean, |
3037f364 | 2149 | }, |
bd8baecd FZ |
2150 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
2151 | .instance_size = sizeof(BlockdevBackupState), | |
2152 | .prepare = blockdev_backup_prepare, | |
2153 | .abort = blockdev_backup_abort, | |
2154 | .clean = blockdev_backup_clean, | |
2155 | }, | |
78b18b78 | 2156 | [TRANSACTION_ACTION_KIND_ABORT] = { |
50f43f0f | 2157 | .instance_size = sizeof(BlkActionState), |
78b18b78 SH |
2158 | .prepare = abort_prepare, |
2159 | .commit = abort_commit, | |
2160 | }, | |
bbe86010 WX |
2161 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
2162 | .instance_size = sizeof(InternalSnapshotState), | |
2163 | .prepare = internal_snapshot_prepare, | |
2164 | .abort = internal_snapshot_abort, | |
5d6e96ef | 2165 | .clean = internal_snapshot_clean, |
bbe86010 | 2166 | }, |
df9a681d FZ |
2167 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
2168 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2169 | .prepare = block_dirty_bitmap_add_prepare, | |
2170 | .abort = block_dirty_bitmap_add_abort, | |
2171 | }, | |
2172 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { | |
2173 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2174 | .prepare = block_dirty_bitmap_clear_prepare, | |
2175 | .commit = block_dirty_bitmap_clear_commit, | |
2176 | .abort = block_dirty_bitmap_clear_abort, | |
2177 | .clean = block_dirty_bitmap_clear_clean, | |
2178 | } | |
ba0c86a3 WX |
2179 | }; |
2180 | ||
94d16a64 JS |
2181 | /** |
2182 | * Allocate a TransactionProperties structure if necessary, and fill | |
2183 | * that structure with desired defaults if they are unset. | |
2184 | */ | |
2185 | static TransactionProperties *get_transaction_properties( | |
2186 | TransactionProperties *props) | |
2187 | { | |
2188 | if (!props) { | |
2189 | props = g_new0(TransactionProperties, 1); | |
2190 | } | |
2191 | ||
2192 | if (!props->has_completion_mode) { | |
2193 | props->has_completion_mode = true; | |
2194 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; | |
2195 | } | |
2196 | ||
2197 | return props; | |
2198 | } | |
2199 | ||
8802d1fd | 2200 | /* |
b756b9ce SH |
2201 | * 'Atomic' group operations. The operations are performed as a set, and if |
2202 | * any fail then we roll back all operations in the group. | |
8802d1fd | 2203 | */ |
94d16a64 JS |
2204 | void qmp_transaction(TransactionActionList *dev_list, |
2205 | bool has_props, | |
2206 | struct TransactionProperties *props, | |
2207 | Error **errp) | |
8802d1fd | 2208 | { |
c8a83e85 | 2209 | TransactionActionList *dev_entry = dev_list; |
94d16a64 | 2210 | BlockJobTxn *block_job_txn = NULL; |
50f43f0f | 2211 | BlkActionState *state, *next; |
43e17041 | 2212 | Error *local_err = NULL; |
8802d1fd | 2213 | |
50f43f0f | 2214 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states; |
8802d1fd JC |
2215 | QSIMPLEQ_INIT(&snap_bdrv_states); |
2216 | ||
94d16a64 JS |
2217 | /* Does this transaction get canceled as a group on failure? |
2218 | * If not, we don't really need to make a BlockJobTxn. | |
2219 | */ | |
2220 | props = get_transaction_properties(props); | |
2221 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
2222 | block_job_txn = block_job_txn_new(); | |
2223 | } | |
2224 | ||
b756b9ce | 2225 | /* drain all i/o before any operations */ |
8802d1fd JC |
2226 | bdrv_drain_all(); |
2227 | ||
b756b9ce | 2228 | /* We don't do anything in this loop that commits us to the operations */ |
8802d1fd | 2229 | while (NULL != dev_entry) { |
c8a83e85 | 2230 | TransactionAction *dev_info = NULL; |
50f43f0f | 2231 | const BlkActionOps *ops; |
52e7c241 | 2232 | |
8802d1fd JC |
2233 | dev_info = dev_entry->value; |
2234 | dev_entry = dev_entry->next; | |
2235 | ||
6a8f9661 | 2236 | assert(dev_info->type < ARRAY_SIZE(actions)); |
ba0c86a3 | 2237 | |
6a8f9661 | 2238 | ops = &actions[dev_info->type]; |
aa3fe714 HR |
2239 | assert(ops->instance_size > 0); |
2240 | ||
ba5d6ab6 SH |
2241 | state = g_malloc0(ops->instance_size); |
2242 | state->ops = ops; | |
2243 | state->action = dev_info; | |
94d16a64 JS |
2244 | state->block_job_txn = block_job_txn; |
2245 | state->txn_props = props; | |
ba5d6ab6 | 2246 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
8802d1fd | 2247 | |
ba5d6ab6 | 2248 | state->ops->prepare(state, &local_err); |
84d18f06 | 2249 | if (local_err) { |
ba0c86a3 WX |
2250 | error_propagate(errp, local_err); |
2251 | goto delete_and_fail; | |
8802d1fd | 2252 | } |
8802d1fd JC |
2253 | } |
2254 | ||
ba5d6ab6 | 2255 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
2256 | if (state->ops->commit) { |
2257 | state->ops->commit(state); | |
2258 | } | |
8802d1fd JC |
2259 | } |
2260 | ||
2261 | /* success */ | |
2262 | goto exit; | |
2263 | ||
2264 | delete_and_fail: | |
b756b9ce | 2265 | /* failure, and it is all-or-none; roll back all operations */ |
ba5d6ab6 SH |
2266 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
2267 | if (state->ops->abort) { | |
2268 | state->ops->abort(state); | |
ba0c86a3 | 2269 | } |
8802d1fd JC |
2270 | } |
2271 | exit: | |
ba5d6ab6 SH |
2272 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
2273 | if (state->ops->clean) { | |
2274 | state->ops->clean(state); | |
ba0c86a3 | 2275 | } |
ba5d6ab6 | 2276 | g_free(state); |
8802d1fd | 2277 | } |
94d16a64 JS |
2278 | if (!has_props) { |
2279 | qapi_free_TransactionProperties(props); | |
2280 | } | |
2281 | block_job_txn_unref(block_job_txn); | |
8802d1fd JC |
2282 | } |
2283 | ||
3a3086b7 JS |
2284 | static int do_open_tray(const char *device, bool force, Error **errp); |
2285 | ||
c245b6a3 | 2286 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 | 2287 | { |
38f54bd1 | 2288 | Error *local_err = NULL; |
3a3086b7 JS |
2289 | int rc; |
2290 | ||
2291 | if (!has_force) { | |
2292 | force = false; | |
2293 | } | |
666daa68 | 2294 | |
3a3086b7 | 2295 | rc = do_open_tray(device, force, &local_err); |
38f54bd1 HR |
2296 | if (local_err) { |
2297 | error_propagate(errp, local_err); | |
c245b6a3 | 2298 | return; |
92d48558 LC |
2299 | } |
2300 | ||
3a3086b7 JS |
2301 | if (rc == EINPROGRESS) { |
2302 | error_setg(errp, "Device '%s' is locked and force was not specified, " | |
2303 | "wait for tray to open and try again", device); | |
2304 | return; | |
2305 | } | |
2306 | ||
6e0abc25 | 2307 | qmp_x_blockdev_remove_medium(device, errp); |
666daa68 MA |
2308 | } |
2309 | ||
12d3ba82 BC |
2310 | void qmp_block_passwd(bool has_device, const char *device, |
2311 | bool has_node_name, const char *node_name, | |
2312 | const char *password, Error **errp) | |
666daa68 | 2313 | { |
12d3ba82 | 2314 | Error *local_err = NULL; |
666daa68 | 2315 | BlockDriverState *bs; |
e3442099 | 2316 | AioContext *aio_context; |
666daa68 | 2317 | |
12d3ba82 BC |
2318 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
2319 | has_node_name ? node_name : NULL, | |
2320 | &local_err); | |
84d18f06 | 2321 | if (local_err) { |
12d3ba82 | 2322 | error_propagate(errp, local_err); |
a4dea8a9 | 2323 | return; |
666daa68 MA |
2324 | } |
2325 | ||
e3442099 SH |
2326 | aio_context = bdrv_get_aio_context(bs); |
2327 | aio_context_acquire(aio_context); | |
2328 | ||
4d2855a3 | 2329 | bdrv_add_key(bs, password, errp); |
e3442099 | 2330 | |
e3442099 | 2331 | aio_context_release(aio_context); |
666daa68 MA |
2332 | } |
2333 | ||
3a3086b7 JS |
2334 | /** |
2335 | * returns -errno on fatal error, +errno for non-fatal situations. | |
2336 | * errp will always be set when the return code is negative. | |
2337 | * May return +ENOSYS if the device has no tray, | |
2338 | * or +EINPROGRESS if the tray is locked and the guest has been notified. | |
2339 | */ | |
2340 | static int do_open_tray(const char *device, bool force, Error **errp) | |
7d8a9f71 HR |
2341 | { |
2342 | BlockBackend *blk; | |
2343 | bool locked; | |
2344 | ||
7d8a9f71 HR |
2345 | blk = blk_by_name(device); |
2346 | if (!blk) { | |
2347 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2348 | "Device '%s' not found", device); | |
3a3086b7 | 2349 | return -ENODEV; |
7d8a9f71 HR |
2350 | } |
2351 | ||
2352 | if (!blk_dev_has_removable_media(blk)) { | |
2353 | error_setg(errp, "Device '%s' is not removable", device); | |
3a3086b7 | 2354 | return -ENOTSUP; |
7d8a9f71 HR |
2355 | } |
2356 | ||
12c7ec87 HR |
2357 | if (!blk_dev_has_tray(blk)) { |
2358 | /* Ignore this command on tray-less devices */ | |
3a3086b7 | 2359 | return ENOSYS; |
12c7ec87 HR |
2360 | } |
2361 | ||
7d8a9f71 | 2362 | if (blk_dev_is_tray_open(blk)) { |
3a3086b7 | 2363 | return 0; |
7d8a9f71 HR |
2364 | } |
2365 | ||
2366 | locked = blk_dev_is_medium_locked(blk); | |
2367 | if (locked) { | |
2368 | blk_dev_eject_request(blk, force); | |
2369 | } | |
2370 | ||
2371 | if (!locked || force) { | |
2372 | blk_dev_change_media_cb(blk, false); | |
2373 | } | |
3a3086b7 JS |
2374 | |
2375 | if (locked && !force) { | |
2376 | return EINPROGRESS; | |
2377 | } | |
2378 | ||
2379 | return 0; | |
2380 | } | |
2381 | ||
2382 | void qmp_blockdev_open_tray(const char *device, bool has_force, bool force, | |
2383 | Error **errp) | |
2384 | { | |
2385 | if (!has_force) { | |
2386 | force = false; | |
2387 | } | |
2388 | do_open_tray(device, force, errp); | |
7d8a9f71 HR |
2389 | } |
2390 | ||
abaaf59d HR |
2391 | void qmp_blockdev_close_tray(const char *device, Error **errp) |
2392 | { | |
2393 | BlockBackend *blk; | |
2394 | ||
2395 | blk = blk_by_name(device); | |
2396 | if (!blk) { | |
2397 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2398 | "Device '%s' not found", device); | |
2399 | return; | |
2400 | } | |
2401 | ||
2402 | if (!blk_dev_has_removable_media(blk)) { | |
2403 | error_setg(errp, "Device '%s' is not removable", device); | |
2404 | return; | |
2405 | } | |
2406 | ||
12c7ec87 HR |
2407 | if (!blk_dev_has_tray(blk)) { |
2408 | /* Ignore this command on tray-less devices */ | |
2409 | return; | |
2410 | } | |
2411 | ||
abaaf59d HR |
2412 | if (!blk_dev_is_tray_open(blk)) { |
2413 | return; | |
2414 | } | |
2415 | ||
2416 | blk_dev_change_media_cb(blk, true); | |
2417 | } | |
2418 | ||
6e0abc25 | 2419 | void qmp_x_blockdev_remove_medium(const char *device, Error **errp) |
2814f672 HR |
2420 | { |
2421 | BlockBackend *blk; | |
2422 | BlockDriverState *bs; | |
2423 | AioContext *aio_context; | |
2424 | bool has_device; | |
2425 | ||
2426 | blk = blk_by_name(device); | |
2427 | if (!blk) { | |
2428 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2429 | "Device '%s' not found", device); | |
2430 | return; | |
2431 | } | |
2432 | ||
2433 | /* For BBs without a device, we can exchange the BDS tree at will */ | |
2434 | has_device = blk_get_attached_dev(blk); | |
2435 | ||
2436 | if (has_device && !blk_dev_has_removable_media(blk)) { | |
2437 | error_setg(errp, "Device '%s' is not removable", device); | |
2438 | return; | |
2439 | } | |
2440 | ||
12c7ec87 | 2441 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
2814f672 HR |
2442 | error_setg(errp, "Tray of device '%s' is not open", device); |
2443 | return; | |
2444 | } | |
2445 | ||
2446 | bs = blk_bs(blk); | |
2447 | if (!bs) { | |
2448 | return; | |
2449 | } | |
2450 | ||
2451 | aio_context = bdrv_get_aio_context(bs); | |
2452 | aio_context_acquire(aio_context); | |
2453 | ||
2454 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { | |
2455 | goto out; | |
2456 | } | |
2457 | ||
2814f672 HR |
2458 | blk_remove_bs(blk); |
2459 | ||
12c7ec87 HR |
2460 | if (!blk_dev_has_tray(blk)) { |
2461 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be | |
2462 | * called at all); therefore, the medium needs to be ejected here. | |
2463 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load | |
2464 | * value passed here (i.e. false). */ | |
2465 | blk_dev_change_media_cb(blk, false); | |
2466 | } | |
2467 | ||
2814f672 HR |
2468 | out: |
2469 | aio_context_release(aio_context); | |
2470 | } | |
2471 | ||
d1299882 HR |
2472 | static void qmp_blockdev_insert_anon_medium(const char *device, |
2473 | BlockDriverState *bs, Error **errp) | |
2474 | { | |
2475 | BlockBackend *blk; | |
2476 | bool has_device; | |
2477 | ||
2478 | blk = blk_by_name(device); | |
2479 | if (!blk) { | |
2480 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2481 | "Device '%s' not found", device); | |
2482 | return; | |
2483 | } | |
2484 | ||
2485 | /* For BBs without a device, we can exchange the BDS tree at will */ | |
2486 | has_device = blk_get_attached_dev(blk); | |
2487 | ||
2488 | if (has_device && !blk_dev_has_removable_media(blk)) { | |
2489 | error_setg(errp, "Device '%s' is not removable", device); | |
2490 | return; | |
2491 | } | |
2492 | ||
12c7ec87 | 2493 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
d1299882 HR |
2494 | error_setg(errp, "Tray of device '%s' is not open", device); |
2495 | return; | |
2496 | } | |
2497 | ||
2498 | if (blk_bs(blk)) { | |
2499 | error_setg(errp, "There already is a medium in device '%s'", device); | |
2500 | return; | |
2501 | } | |
2502 | ||
2503 | blk_insert_bs(blk, bs); | |
2504 | ||
12c7ec87 HR |
2505 | if (!blk_dev_has_tray(blk)) { |
2506 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be | |
2507 | * called at all); therefore, the medium needs to be pushed into the | |
2508 | * slot here. | |
2509 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load | |
2510 | * value passed here (i.e. true). */ | |
2511 | blk_dev_change_media_cb(blk, true); | |
2512 | } | |
d1299882 HR |
2513 | } |
2514 | ||
6e0abc25 HR |
2515 | void qmp_x_blockdev_insert_medium(const char *device, const char *node_name, |
2516 | Error **errp) | |
d1299882 HR |
2517 | { |
2518 | BlockDriverState *bs; | |
2519 | ||
2520 | bs = bdrv_find_node(node_name); | |
2521 | if (!bs) { | |
2522 | error_setg(errp, "Node '%s' not found", node_name); | |
2523 | return; | |
2524 | } | |
2525 | ||
1f0c461b | 2526 | if (bdrv_has_blk(bs)) { |
d1299882 | 2527 | error_setg(errp, "Node '%s' is already in use by '%s'", node_name, |
1f0c461b | 2528 | bdrv_get_parent_name(bs)); |
d1299882 HR |
2529 | return; |
2530 | } | |
2531 | ||
2532 | qmp_blockdev_insert_anon_medium(device, bs, errp); | |
2533 | } | |
2534 | ||
24fb4133 HR |
2535 | void qmp_blockdev_change_medium(const char *device, const char *filename, |
2536 | bool has_format, const char *format, | |
39ff43d9 HR |
2537 | bool has_read_only, |
2538 | BlockdevChangeReadOnlyMode read_only, | |
24fb4133 | 2539 | Error **errp) |
de2c6c05 HR |
2540 | { |
2541 | BlockBackend *blk; | |
2542 | BlockDriverState *medium_bs = NULL; | |
2543 | int bdrv_flags, ret; | |
2544 | QDict *options = NULL; | |
2545 | Error *err = NULL; | |
2546 | ||
2547 | blk = blk_by_name(device); | |
2548 | if (!blk) { | |
2549 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2550 | "Device '%s' not found", device); | |
2551 | goto fail; | |
2552 | } | |
2553 | ||
2554 | if (blk_bs(blk)) { | |
2555 | blk_update_root_state(blk); | |
2556 | } | |
2557 | ||
2558 | bdrv_flags = blk_get_open_flags_from_root_state(blk); | |
156abc2f AM |
2559 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
2560 | BDRV_O_PROTOCOL); | |
de2c6c05 | 2561 | |
39ff43d9 HR |
2562 | if (!has_read_only) { |
2563 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; | |
2564 | } | |
2565 | ||
2566 | switch (read_only) { | |
2567 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: | |
2568 | break; | |
2569 | ||
2570 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: | |
2571 | bdrv_flags &= ~BDRV_O_RDWR; | |
2572 | break; | |
2573 | ||
2574 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: | |
2575 | bdrv_flags |= BDRV_O_RDWR; | |
2576 | break; | |
2577 | ||
2578 | default: | |
2579 | abort(); | |
2580 | } | |
2581 | ||
24fb4133 | 2582 | if (has_format) { |
de2c6c05 HR |
2583 | options = qdict_new(); |
2584 | qdict_put(options, "driver", qstring_from_str(format)); | |
2585 | } | |
2586 | ||
2587 | assert(!medium_bs); | |
2588 | ret = bdrv_open(&medium_bs, filename, NULL, options, bdrv_flags, errp); | |
2589 | if (ret < 0) { | |
2590 | goto fail; | |
2591 | } | |
2592 | ||
de2c6c05 HR |
2593 | bdrv_add_key(medium_bs, NULL, &err); |
2594 | if (err) { | |
2595 | error_propagate(errp, err); | |
2596 | goto fail; | |
2597 | } | |
2598 | ||
2599 | qmp_blockdev_open_tray(device, false, false, &err); | |
2600 | if (err) { | |
2601 | error_propagate(errp, err); | |
2602 | goto fail; | |
2603 | } | |
2604 | ||
6e0abc25 | 2605 | qmp_x_blockdev_remove_medium(device, &err); |
de2c6c05 HR |
2606 | if (err) { |
2607 | error_propagate(errp, err); | |
2608 | goto fail; | |
2609 | } | |
2610 | ||
2611 | qmp_blockdev_insert_anon_medium(device, medium_bs, &err); | |
2612 | if (err) { | |
2613 | error_propagate(errp, err); | |
2614 | goto fail; | |
2615 | } | |
2616 | ||
a5614993 KW |
2617 | blk_apply_root_state(blk, medium_bs); |
2618 | ||
de2c6c05 HR |
2619 | qmp_blockdev_close_tray(device, errp); |
2620 | ||
2621 | fail: | |
2622 | /* If the medium has been inserted, the device has its own reference, so | |
2623 | * ours must be relinquished; and if it has not been inserted successfully, | |
2624 | * the reference must be relinquished anyway */ | |
2625 | bdrv_unref(medium_bs); | |
2626 | } | |
2627 | ||
727f005e | 2628 | /* throttling disk I/O limits */ |
80047da5 | 2629 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
2630 | int64_t bps_wr, |
2631 | int64_t iops, | |
2632 | int64_t iops_rd, | |
2633 | int64_t iops_wr, | |
2634 | bool has_bps_max, | |
2635 | int64_t bps_max, | |
2636 | bool has_bps_rd_max, | |
2637 | int64_t bps_rd_max, | |
2638 | bool has_bps_wr_max, | |
2639 | int64_t bps_wr_max, | |
2640 | bool has_iops_max, | |
2641 | int64_t iops_max, | |
2642 | bool has_iops_rd_max, | |
2643 | int64_t iops_rd_max, | |
2644 | bool has_iops_wr_max, | |
2024c1df | 2645 | int64_t iops_wr_max, |
dce13204 AG |
2646 | bool has_bps_max_length, |
2647 | int64_t bps_max_length, | |
2648 | bool has_bps_rd_max_length, | |
2649 | int64_t bps_rd_max_length, | |
2650 | bool has_bps_wr_max_length, | |
2651 | int64_t bps_wr_max_length, | |
2652 | bool has_iops_max_length, | |
2653 | int64_t iops_max_length, | |
2654 | bool has_iops_rd_max_length, | |
2655 | int64_t iops_rd_max_length, | |
2656 | bool has_iops_wr_max_length, | |
2657 | int64_t iops_wr_max_length, | |
2024c1df | 2658 | bool has_iops_size, |
76f4afb4 AG |
2659 | int64_t iops_size, |
2660 | bool has_group, | |
2661 | const char *group, Error **errp) | |
727f005e | 2662 | { |
cc0681c4 | 2663 | ThrottleConfig cfg; |
727f005e | 2664 | BlockDriverState *bs; |
a0e8544c | 2665 | BlockBackend *blk; |
b15446fd | 2666 | AioContext *aio_context; |
727f005e | 2667 | |
a0e8544c FZ |
2668 | blk = blk_by_name(device); |
2669 | if (!blk) { | |
75158ebb MA |
2670 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
2671 | "Device '%s' not found", device); | |
80047da5 | 2672 | return; |
727f005e | 2673 | } |
5433c24f HR |
2674 | |
2675 | aio_context = blk_get_aio_context(blk); | |
2676 | aio_context_acquire(aio_context); | |
2677 | ||
a0e8544c | 2678 | bs = blk_bs(blk); |
5433c24f HR |
2679 | if (!bs) { |
2680 | error_setg(errp, "Device '%s' has no medium", device); | |
2681 | goto out; | |
2682 | } | |
727f005e | 2683 | |
1588ab5d | 2684 | throttle_config_init(&cfg); |
cc0681c4 BC |
2685 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; |
2686 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
2687 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
2688 | ||
2689 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
2690 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
2691 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
2692 | ||
3e9fab69 BC |
2693 | if (has_bps_max) { |
2694 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
2695 | } | |
2696 | if (has_bps_rd_max) { | |
2697 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
2698 | } | |
2699 | if (has_bps_wr_max) { | |
2700 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
2701 | } | |
2702 | if (has_iops_max) { | |
2703 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
2704 | } | |
2705 | if (has_iops_rd_max) { | |
2706 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
2707 | } | |
2708 | if (has_iops_wr_max) { | |
2709 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
2710 | } | |
727f005e | 2711 | |
dce13204 AG |
2712 | if (has_bps_max_length) { |
2713 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = bps_max_length; | |
2714 | } | |
2715 | if (has_bps_rd_max_length) { | |
2716 | cfg.buckets[THROTTLE_BPS_READ].burst_length = bps_rd_max_length; | |
2717 | } | |
2718 | if (has_bps_wr_max_length) { | |
2719 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = bps_wr_max_length; | |
2720 | } | |
2721 | if (has_iops_max_length) { | |
2722 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = iops_max_length; | |
2723 | } | |
2724 | if (has_iops_rd_max_length) { | |
2725 | cfg.buckets[THROTTLE_OPS_READ].burst_length = iops_rd_max_length; | |
2726 | } | |
2727 | if (has_iops_wr_max_length) { | |
2728 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = iops_wr_max_length; | |
2729 | } | |
2730 | ||
2024c1df BC |
2731 | if (has_iops_size) { |
2732 | cfg.op_size = iops_size; | |
2733 | } | |
cc0681c4 | 2734 | |
d5851089 | 2735 | if (!throttle_is_valid(&cfg, errp)) { |
5433c24f | 2736 | goto out; |
727f005e ZYW |
2737 | } |
2738 | ||
76f4afb4 AG |
2739 | if (throttle_enabled(&cfg)) { |
2740 | /* Enable I/O limits if they're not enabled yet, otherwise | |
2741 | * just update the throttling group. */ | |
97148076 KW |
2742 | if (!blk_get_public(blk)->throttle_state) { |
2743 | blk_io_limits_enable(blk, has_group ? group : device); | |
76f4afb4 | 2744 | } else if (has_group) { |
97148076 | 2745 | blk_io_limits_update_group(blk, group); |
76f4afb4 AG |
2746 | } |
2747 | /* Set the new throttling configuration */ | |
97148076 KW |
2748 | blk_set_io_limits(blk, &cfg); |
2749 | } else if (blk_get_public(blk)->throttle_state) { | |
76f4afb4 | 2750 | /* If all throttling settings are set to 0, disable I/O limits */ |
97148076 | 2751 | blk_io_limits_disable(blk); |
727f005e | 2752 | } |
b15446fd | 2753 | |
5433c24f | 2754 | out: |
b15446fd | 2755 | aio_context_release(aio_context); |
727f005e ZYW |
2756 | } |
2757 | ||
341ebc2f JS |
2758 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
2759 | bool has_granularity, uint32_t granularity, | |
2760 | Error **errp) | |
2761 | { | |
2762 | AioContext *aio_context; | |
2763 | BlockDriverState *bs; | |
2764 | ||
2765 | if (!name || name[0] == '\0') { | |
2766 | error_setg(errp, "Bitmap name cannot be empty"); | |
2767 | return; | |
2768 | } | |
2769 | ||
2770 | bs = bdrv_lookup_bs(node, node, errp); | |
2771 | if (!bs) { | |
2772 | return; | |
2773 | } | |
2774 | ||
2775 | aio_context = bdrv_get_aio_context(bs); | |
2776 | aio_context_acquire(aio_context); | |
2777 | ||
2778 | if (has_granularity) { | |
2779 | if (granularity < 512 || !is_power_of_2(granularity)) { | |
2780 | error_setg(errp, "Granularity must be power of 2 " | |
2781 | "and at least 512"); | |
2782 | goto out; | |
2783 | } | |
2784 | } else { | |
2785 | /* Default to cluster size, if available: */ | |
2786 | granularity = bdrv_get_default_bitmap_granularity(bs); | |
2787 | } | |
2788 | ||
2789 | bdrv_create_dirty_bitmap(bs, granularity, name, errp); | |
2790 | ||
2791 | out: | |
2792 | aio_context_release(aio_context); | |
2793 | } | |
2794 | ||
2795 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, | |
2796 | Error **errp) | |
2797 | { | |
2798 | AioContext *aio_context; | |
2799 | BlockDriverState *bs; | |
2800 | BdrvDirtyBitmap *bitmap; | |
2801 | ||
2802 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); | |
2803 | if (!bitmap || !bs) { | |
2804 | return; | |
2805 | } | |
2806 | ||
9bd2b08f JS |
2807 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
2808 | error_setg(errp, | |
2809 | "Bitmap '%s' is currently frozen and cannot be removed", | |
2810 | name); | |
2811 | goto out; | |
2812 | } | |
20dca810 | 2813 | bdrv_dirty_bitmap_make_anon(bitmap); |
341ebc2f JS |
2814 | bdrv_release_dirty_bitmap(bs, bitmap); |
2815 | ||
9bd2b08f | 2816 | out: |
341ebc2f JS |
2817 | aio_context_release(aio_context); |
2818 | } | |
2819 | ||
e74e6b78 JS |
2820 | /** |
2821 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap | |
2822 | * immediately after a full backup operation. | |
2823 | */ | |
2824 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, | |
2825 | Error **errp) | |
2826 | { | |
2827 | AioContext *aio_context; | |
2828 | BdrvDirtyBitmap *bitmap; | |
2829 | BlockDriverState *bs; | |
2830 | ||
2831 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); | |
2832 | if (!bitmap || !bs) { | |
2833 | return; | |
2834 | } | |
2835 | ||
2836 | if (bdrv_dirty_bitmap_frozen(bitmap)) { | |
2837 | error_setg(errp, | |
2838 | "Bitmap '%s' is currently frozen and cannot be modified", | |
2839 | name); | |
2840 | goto out; | |
2841 | } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { | |
2842 | error_setg(errp, | |
2843 | "Bitmap '%s' is currently disabled and cannot be cleared", | |
2844 | name); | |
2845 | goto out; | |
2846 | } | |
2847 | ||
df9a681d | 2848 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
e74e6b78 JS |
2849 | |
2850 | out: | |
2851 | aio_context_release(aio_context); | |
2852 | } | |
2853 | ||
072ebe6b | 2854 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
9063f814 RH |
2855 | { |
2856 | const char *id = qdict_get_str(qdict, "id"); | |
7e7d56d9 | 2857 | BlockBackend *blk; |
9063f814 | 2858 | BlockDriverState *bs; |
8ad4202b | 2859 | AioContext *aio_context; |
3718d8ab | 2860 | Error *local_err = NULL; |
9063f814 | 2861 | |
2073d410 KW |
2862 | bs = bdrv_find_node(id); |
2863 | if (bs) { | |
2864 | qmp_x_blockdev_del(false, NULL, true, id, &local_err); | |
2865 | if (local_err) { | |
2866 | error_report_err(local_err); | |
2867 | } | |
2868 | return; | |
2869 | } | |
2870 | ||
7e7d56d9 MA |
2871 | blk = blk_by_name(id); |
2872 | if (!blk) { | |
b1422f20 | 2873 | error_report("Device '%s' not found", id); |
072ebe6b | 2874 | return; |
9063f814 | 2875 | } |
8ad4202b | 2876 | |
26f8b3a8 | 2877 | if (!blk_legacy_dinfo(blk)) { |
48f364dd MA |
2878 | error_report("Deleting device added with blockdev-add" |
2879 | " is not supported"); | |
072ebe6b | 2880 | return; |
48f364dd MA |
2881 | } |
2882 | ||
5433c24f | 2883 | aio_context = blk_get_aio_context(blk); |
8ad4202b SH |
2884 | aio_context_acquire(aio_context); |
2885 | ||
5433c24f HR |
2886 | bs = blk_bs(blk); |
2887 | if (bs) { | |
2888 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { | |
2889 | error_report_err(local_err); | |
2890 | aio_context_release(aio_context); | |
2891 | return; | |
2892 | } | |
9063f814 | 2893 | |
938abd43 | 2894 | blk_remove_bs(blk); |
5433c24f | 2895 | } |
9063f814 | 2896 | |
7c735873 | 2897 | /* Make the BlockBackend and the attached BlockDriverState anonymous */ |
efaa7c4e HR |
2898 | monitor_remove_blk(blk); |
2899 | ||
7c735873 HR |
2900 | /* If this BlockBackend has a device attached to it, its refcount will be |
2901 | * decremented when the device is removed; otherwise we have to do so here. | |
d22b2f41 | 2902 | */ |
a7f53e26 | 2903 | if (blk_get_attached_dev(blk)) { |
293c51a6 | 2904 | /* Further I/O must not pause the guest */ |
373340b2 HR |
2905 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
2906 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 2907 | } else { |
b9fe8a7a | 2908 | blk_unref(blk); |
9063f814 RH |
2909 | } |
2910 | ||
8ad4202b | 2911 | aio_context_release(aio_context); |
9063f814 | 2912 | } |
6d4a2b3a | 2913 | |
3b1dbd11 BC |
2914 | void qmp_block_resize(bool has_device, const char *device, |
2915 | bool has_node_name, const char *node_name, | |
2916 | int64_t size, Error **errp) | |
6d4a2b3a | 2917 | { |
3b1dbd11 | 2918 | Error *local_err = NULL; |
6d4a2b3a | 2919 | BlockDriverState *bs; |
927e0e76 | 2920 | AioContext *aio_context; |
8732901e | 2921 | int ret; |
6d4a2b3a | 2922 | |
3b1dbd11 BC |
2923 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
2924 | has_node_name ? node_name : NULL, | |
2925 | &local_err); | |
84d18f06 | 2926 | if (local_err) { |
3b1dbd11 BC |
2927 | error_propagate(errp, local_err); |
2928 | return; | |
2929 | } | |
2930 | ||
927e0e76 SH |
2931 | aio_context = bdrv_get_aio_context(bs); |
2932 | aio_context_acquire(aio_context); | |
2933 | ||
3b1dbd11 | 2934 | if (!bdrv_is_first_non_filter(bs)) { |
c6bd8c70 | 2935 | error_setg(errp, QERR_FEATURE_DISABLED, "resize"); |
927e0e76 | 2936 | goto out; |
6d4a2b3a CH |
2937 | } |
2938 | ||
2939 | if (size < 0) { | |
c6bd8c70 | 2940 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 2941 | goto out; |
6d4a2b3a CH |
2942 | } |
2943 | ||
9c75e168 | 2944 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
c6bd8c70 | 2945 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
927e0e76 | 2946 | goto out; |
9c75e168 JC |
2947 | } |
2948 | ||
92b7a08d PL |
2949 | /* complete all in-flight operations before resizing the device */ |
2950 | bdrv_drain_all(); | |
2951 | ||
8732901e KW |
2952 | ret = bdrv_truncate(bs, size); |
2953 | switch (ret) { | |
939a1cc3 SH |
2954 | case 0: |
2955 | break; | |
2956 | case -ENOMEDIUM: | |
c6bd8c70 | 2957 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
939a1cc3 SH |
2958 | break; |
2959 | case -ENOTSUP: | |
c6bd8c70 | 2960 | error_setg(errp, QERR_UNSUPPORTED); |
939a1cc3 SH |
2961 | break; |
2962 | case -EACCES: | |
81e5f78a | 2963 | error_setg(errp, "Device '%s' is read only", device); |
939a1cc3 SH |
2964 | break; |
2965 | case -EBUSY: | |
c6bd8c70 | 2966 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
939a1cc3 SH |
2967 | break; |
2968 | default: | |
8732901e | 2969 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 2970 | break; |
6d4a2b3a | 2971 | } |
927e0e76 SH |
2972 | |
2973 | out: | |
2974 | aio_context_release(aio_context); | |
6d4a2b3a | 2975 | } |
12bd451f | 2976 | |
9abf2dba | 2977 | static void block_job_cb(void *opaque, int ret) |
12bd451f | 2978 | { |
723c5d93 SH |
2979 | /* Note that this function may be executed from another AioContext besides |
2980 | * the QEMU main loop. If you need to access anything that assumes the | |
2981 | * QEMU global mutex, use a BH or introduce a mutex. | |
2982 | */ | |
2983 | ||
12bd451f | 2984 | BlockDriverState *bs = opaque; |
bcada37b | 2985 | const char *msg = NULL; |
12bd451f | 2986 | |
9abf2dba | 2987 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
2988 | |
2989 | assert(bs->job); | |
bcada37b | 2990 | |
12bd451f | 2991 | if (ret < 0) { |
bcada37b | 2992 | msg = strerror(-ret); |
12bd451f SH |
2993 | } |
2994 | ||
370521a1 | 2995 | if (block_job_is_cancelled(bs->job)) { |
bcada37b | 2996 | block_job_event_cancelled(bs->job); |
370521a1 | 2997 | } else { |
bcada37b | 2998 | block_job_event_completed(bs->job, msg); |
370521a1 | 2999 | } |
12bd451f SH |
3000 | } |
3001 | ||
13d8cc51 JC |
3002 | void qmp_block_stream(const char *device, |
3003 | bool has_base, const char *base, | |
3004 | bool has_backing_file, const char *backing_file, | |
3005 | bool has_speed, int64_t speed, | |
1d809098 PB |
3006 | bool has_on_error, BlockdevOnError on_error, |
3007 | Error **errp) | |
12bd451f | 3008 | { |
a0e8544c | 3009 | BlockBackend *blk; |
12bd451f | 3010 | BlockDriverState *bs; |
c8c3080f | 3011 | BlockDriverState *base_bs = NULL; |
f3e69beb | 3012 | AioContext *aio_context; |
fd7f8c65 | 3013 | Error *local_err = NULL; |
13d8cc51 | 3014 | const char *base_name = NULL; |
12bd451f | 3015 | |
1d809098 PB |
3016 | if (!has_on_error) { |
3017 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
3018 | } | |
3019 | ||
a0e8544c FZ |
3020 | blk = blk_by_name(device); |
3021 | if (!blk) { | |
75158ebb MA |
3022 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3023 | "Device '%s' not found", device); | |
12bd451f SH |
3024 | return; |
3025 | } | |
3026 | ||
5433c24f | 3027 | aio_context = blk_get_aio_context(blk); |
f3e69beb SH |
3028 | aio_context_acquire(aio_context); |
3029 | ||
5433c24f HR |
3030 | if (!blk_is_available(blk)) { |
3031 | error_setg(errp, "Device '%s' has no medium", device); | |
3032 | goto out; | |
3033 | } | |
3034 | bs = blk_bs(blk); | |
3035 | ||
628ff683 | 3036 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
f3e69beb | 3037 | goto out; |
628ff683 FZ |
3038 | } |
3039 | ||
13d8cc51 | 3040 | if (has_base) { |
c8c3080f MT |
3041 | base_bs = bdrv_find_backing_image(bs, base); |
3042 | if (base_bs == NULL) { | |
c6bd8c70 | 3043 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
f3e69beb | 3044 | goto out; |
c8c3080f | 3045 | } |
f3e69beb | 3046 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
13d8cc51 | 3047 | base_name = base; |
12bd451f SH |
3048 | } |
3049 | ||
13d8cc51 JC |
3050 | /* if we are streaming the entire chain, the result will have no backing |
3051 | * file, and specifying one is therefore an error */ | |
3052 | if (base_bs == NULL && has_backing_file) { | |
3053 | error_setg(errp, "backing file specified, but streaming the " | |
3054 | "entire chain"); | |
f3e69beb | 3055 | goto out; |
13d8cc51 JC |
3056 | } |
3057 | ||
3058 | /* backing_file string overrides base bs filename */ | |
3059 | base_name = has_backing_file ? backing_file : base_name; | |
3060 | ||
3061 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, | |
1d809098 | 3062 | on_error, block_job_cb, bs, &local_err); |
84d18f06 | 3063 | if (local_err) { |
fd7f8c65 | 3064 | error_propagate(errp, local_err); |
f3e69beb | 3065 | goto out; |
12bd451f SH |
3066 | } |
3067 | ||
3068 | trace_qmp_block_stream(bs, bs->job); | |
f3e69beb SH |
3069 | |
3070 | out: | |
3071 | aio_context_release(aio_context); | |
12bd451f | 3072 | } |
2d47c6e9 | 3073 | |
ed61fc10 | 3074 | void qmp_block_commit(const char *device, |
7676e2c5 JC |
3075 | bool has_base, const char *base, |
3076 | bool has_top, const char *top, | |
54e26900 | 3077 | bool has_backing_file, const char *backing_file, |
ed61fc10 JC |
3078 | bool has_speed, int64_t speed, |
3079 | Error **errp) | |
3080 | { | |
a0e8544c | 3081 | BlockBackend *blk; |
ed61fc10 JC |
3082 | BlockDriverState *bs; |
3083 | BlockDriverState *base_bs, *top_bs; | |
9e85cd5c | 3084 | AioContext *aio_context; |
ed61fc10 JC |
3085 | Error *local_err = NULL; |
3086 | /* This will be part of the QMP command, if/when the | |
3087 | * BlockdevOnError change for blkmirror makes it in | |
3088 | */ | |
92aa5c6d | 3089 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 | 3090 | |
54504663 HR |
3091 | if (!has_speed) { |
3092 | speed = 0; | |
3093 | } | |
3094 | ||
7676e2c5 JC |
3095 | /* Important Note: |
3096 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
3097 | * live commit feature versions; for this to work, we must make sure to | |
3098 | * perform the device lookup before any generic errors that may occur in a | |
3099 | * scenario in which all optional arguments are omitted. */ | |
a0e8544c FZ |
3100 | blk = blk_by_name(device); |
3101 | if (!blk) { | |
75158ebb MA |
3102 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3103 | "Device '%s' not found", device); | |
ed61fc10 | 3104 | return; |
628ff683 FZ |
3105 | } |
3106 | ||
5433c24f | 3107 | aio_context = blk_get_aio_context(blk); |
9e85cd5c SH |
3108 | aio_context_acquire(aio_context); |
3109 | ||
5433c24f HR |
3110 | if (!blk_is_available(blk)) { |
3111 | error_setg(errp, "Device '%s' has no medium", device); | |
3112 | goto out; | |
3113 | } | |
3114 | bs = blk_bs(blk); | |
3115 | ||
bb00021d | 3116 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
9e85cd5c | 3117 | goto out; |
ed61fc10 | 3118 | } |
ed61fc10 JC |
3119 | |
3120 | /* default top_bs is the active layer */ | |
3121 | top_bs = bs; | |
3122 | ||
7676e2c5 | 3123 | if (has_top && top) { |
ed61fc10 JC |
3124 | if (strcmp(bs->filename, top) != 0) { |
3125 | top_bs = bdrv_find_backing_image(bs, top); | |
3126 | } | |
3127 | } | |
3128 | ||
3129 | if (top_bs == NULL) { | |
3130 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
9e85cd5c | 3131 | goto out; |
ed61fc10 JC |
3132 | } |
3133 | ||
9e85cd5c SH |
3134 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
3135 | ||
d5208c45 JC |
3136 | if (has_base && base) { |
3137 | base_bs = bdrv_find_backing_image(top_bs, base); | |
3138 | } else { | |
3139 | base_bs = bdrv_find_base(top_bs); | |
3140 | } | |
3141 | ||
3142 | if (base_bs == NULL) { | |
c6bd8c70 | 3143 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
9e85cd5c | 3144 | goto out; |
d5208c45 JC |
3145 | } |
3146 | ||
9e85cd5c SH |
3147 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
3148 | ||
bb00021d FZ |
3149 | if (bdrv_op_is_blocked(base_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
3150 | goto out; | |
3151 | } | |
3152 | ||
7676e2c5 JC |
3153 | /* Do not allow attempts to commit an image into itself */ |
3154 | if (top_bs == base_bs) { | |
3155 | error_setg(errp, "cannot commit an image into itself"); | |
9e85cd5c | 3156 | goto out; |
7676e2c5 JC |
3157 | } |
3158 | ||
20a63d2c | 3159 | if (top_bs == bs) { |
54e26900 JC |
3160 | if (has_backing_file) { |
3161 | error_setg(errp, "'backing-file' specified," | |
3162 | " but 'top' is the active layer"); | |
9e85cd5c | 3163 | goto out; |
54e26900 | 3164 | } |
20a63d2c FZ |
3165 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
3166 | bs, &local_err); | |
3167 | } else { | |
3168 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, | |
54e26900 | 3169 | has_backing_file ? backing_file : NULL, &local_err); |
20a63d2c | 3170 | } |
ed61fc10 JC |
3171 | if (local_err != NULL) { |
3172 | error_propagate(errp, local_err); | |
9e85cd5c | 3173 | goto out; |
ed61fc10 | 3174 | } |
9e85cd5c SH |
3175 | |
3176 | out: | |
3177 | aio_context_release(aio_context); | |
ed61fc10 JC |
3178 | } |
3179 | ||
78f51fde JS |
3180 | static void do_drive_backup(const char *device, const char *target, |
3181 | bool has_format, const char *format, | |
3182 | enum MirrorSyncMode sync, | |
3183 | bool has_mode, enum NewImageMode mode, | |
3184 | bool has_speed, int64_t speed, | |
3185 | bool has_bitmap, const char *bitmap, | |
3186 | bool has_on_source_error, | |
3187 | BlockdevOnError on_source_error, | |
3188 | bool has_on_target_error, | |
3189 | BlockdevOnError on_target_error, | |
3190 | BlockJobTxn *txn, Error **errp) | |
99a9addf | 3191 | { |
a0e8544c | 3192 | BlockBackend *blk; |
99a9addf SH |
3193 | BlockDriverState *bs; |
3194 | BlockDriverState *target_bs; | |
fc5d3f84 | 3195 | BlockDriverState *source = NULL; |
d58d8453 | 3196 | BdrvDirtyBitmap *bmap = NULL; |
761731b1 | 3197 | AioContext *aio_context; |
e6641719 | 3198 | QDict *options = NULL; |
99a9addf SH |
3199 | Error *local_err = NULL; |
3200 | int flags; | |
3201 | int64_t size; | |
3202 | int ret; | |
3203 | ||
3204 | if (!has_speed) { | |
3205 | speed = 0; | |
3206 | } | |
3207 | if (!has_on_source_error) { | |
3208 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3209 | } | |
3210 | if (!has_on_target_error) { | |
3211 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3212 | } | |
3213 | if (!has_mode) { | |
3214 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
3215 | } | |
3216 | ||
a0e8544c FZ |
3217 | blk = blk_by_name(device); |
3218 | if (!blk) { | |
75158ebb MA |
3219 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3220 | "Device '%s' not found", device); | |
99a9addf SH |
3221 | return; |
3222 | } | |
3223 | ||
5433c24f | 3224 | aio_context = blk_get_aio_context(blk); |
761731b1 SH |
3225 | aio_context_acquire(aio_context); |
3226 | ||
c29c1dd3 FZ |
3227 | /* Although backup_run has this check too, we need to use bs->drv below, so |
3228 | * do an early check redundantly. */ | |
5433c24f | 3229 | if (!blk_is_available(blk)) { |
c6bd8c70 | 3230 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
761731b1 | 3231 | goto out; |
99a9addf | 3232 | } |
5433c24f | 3233 | bs = blk_bs(blk); |
99a9addf SH |
3234 | |
3235 | if (!has_format) { | |
3236 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
3237 | } | |
99a9addf | 3238 | |
c29c1dd3 | 3239 | /* Early check to avoid creating target */ |
3718d8ab | 3240 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
761731b1 | 3241 | goto out; |
99a9addf SH |
3242 | } |
3243 | ||
61de4c68 | 3244 | flags = bs->open_flags | BDRV_O_RDWR; |
99a9addf | 3245 | |
fc5d3f84 IM |
3246 | /* See if we have a backing HD we can use to create our new image |
3247 | * on top of. */ | |
3248 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
760e0063 | 3249 | source = backing_bs(bs); |
fc5d3f84 IM |
3250 | if (!source) { |
3251 | sync = MIRROR_SYNC_MODE_FULL; | |
3252 | } | |
3253 | } | |
3254 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
3255 | source = bs; | |
3256 | } | |
3257 | ||
99a9addf SH |
3258 | size = bdrv_getlength(bs); |
3259 | if (size < 0) { | |
3260 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
761731b1 | 3261 | goto out; |
99a9addf SH |
3262 | } |
3263 | ||
3264 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
e6641719 | 3265 | assert(format); |
fc5d3f84 IM |
3266 | if (source) { |
3267 | bdrv_img_create(target, format, source->filename, | |
3268 | source->drv->format_name, NULL, | |
3269 | size, flags, &local_err, false); | |
3270 | } else { | |
3271 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
3272 | size, flags, &local_err, false); | |
3273 | } | |
99a9addf SH |
3274 | } |
3275 | ||
84d18f06 | 3276 | if (local_err) { |
99a9addf | 3277 | error_propagate(errp, local_err); |
761731b1 | 3278 | goto out; |
99a9addf SH |
3279 | } |
3280 | ||
e6641719 HR |
3281 | if (format) { |
3282 | options = qdict_new(); | |
3283 | qdict_put(options, "driver", qstring_from_str(format)); | |
3284 | } | |
3285 | ||
f67503e5 | 3286 | target_bs = NULL; |
6ebf9aa2 | 3287 | ret = bdrv_open(&target_bs, target, NULL, options, flags, &local_err); |
99a9addf | 3288 | if (ret < 0) { |
34b5d2c6 | 3289 | error_propagate(errp, local_err); |
761731b1 | 3290 | goto out; |
99a9addf SH |
3291 | } |
3292 | ||
761731b1 SH |
3293 | bdrv_set_aio_context(target_bs, aio_context); |
3294 | ||
d58d8453 JS |
3295 | if (has_bitmap) { |
3296 | bmap = bdrv_find_dirty_bitmap(bs, bitmap); | |
3297 | if (!bmap) { | |
3298 | error_setg(errp, "Bitmap '%s' could not be found", bitmap); | |
0702d3d8 | 3299 | bdrv_unref(target_bs); |
d58d8453 JS |
3300 | goto out; |
3301 | } | |
3302 | } | |
3303 | ||
3304 | backup_start(bs, target_bs, speed, sync, bmap, | |
3305 | on_source_error, on_target_error, | |
78f51fde | 3306 | block_job_cb, bs, txn, &local_err); |
99a9addf | 3307 | if (local_err != NULL) { |
4f6fd349 | 3308 | bdrv_unref(target_bs); |
99a9addf | 3309 | error_propagate(errp, local_err); |
761731b1 | 3310 | goto out; |
99a9addf | 3311 | } |
761731b1 SH |
3312 | |
3313 | out: | |
3314 | aio_context_release(aio_context); | |
99a9addf SH |
3315 | } |
3316 | ||
78f51fde JS |
3317 | void qmp_drive_backup(const char *device, const char *target, |
3318 | bool has_format, const char *format, | |
3319 | enum MirrorSyncMode sync, | |
3320 | bool has_mode, enum NewImageMode mode, | |
3321 | bool has_speed, int64_t speed, | |
3322 | bool has_bitmap, const char *bitmap, | |
3323 | bool has_on_source_error, BlockdevOnError on_source_error, | |
3324 | bool has_on_target_error, BlockdevOnError on_target_error, | |
3325 | Error **errp) | |
3326 | { | |
3327 | return do_drive_backup(device, target, has_format, format, sync, | |
3328 | has_mode, mode, has_speed, speed, | |
3329 | has_bitmap, bitmap, | |
3330 | has_on_source_error, on_source_error, | |
3331 | has_on_target_error, on_target_error, | |
3332 | NULL, errp); | |
3333 | } | |
3334 | ||
c13163fb BC |
3335 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
3336 | { | |
d5a8ee60 | 3337 | return bdrv_named_nodes_list(errp); |
c13163fb BC |
3338 | } |
3339 | ||
78f51fde | 3340 | void do_blockdev_backup(const char *device, const char *target, |
c29c1dd3 FZ |
3341 | enum MirrorSyncMode sync, |
3342 | bool has_speed, int64_t speed, | |
3343 | bool has_on_source_error, | |
3344 | BlockdevOnError on_source_error, | |
3345 | bool has_on_target_error, | |
3346 | BlockdevOnError on_target_error, | |
78f51fde | 3347 | BlockJobTxn *txn, Error **errp) |
c29c1dd3 | 3348 | { |
5433c24f | 3349 | BlockBackend *blk, *target_blk; |
c29c1dd3 FZ |
3350 | BlockDriverState *bs; |
3351 | BlockDriverState *target_bs; | |
3352 | Error *local_err = NULL; | |
3353 | AioContext *aio_context; | |
3354 | ||
3355 | if (!has_speed) { | |
3356 | speed = 0; | |
3357 | } | |
3358 | if (!has_on_source_error) { | |
3359 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3360 | } | |
3361 | if (!has_on_target_error) { | |
3362 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3363 | } | |
3364 | ||
a0e8544c FZ |
3365 | blk = blk_by_name(device); |
3366 | if (!blk) { | |
5b347c54 | 3367 | error_setg(errp, "Device '%s' not found", device); |
c29c1dd3 FZ |
3368 | return; |
3369 | } | |
3370 | ||
5433c24f | 3371 | aio_context = blk_get_aio_context(blk); |
c29c1dd3 FZ |
3372 | aio_context_acquire(aio_context); |
3373 | ||
5433c24f HR |
3374 | if (!blk_is_available(blk)) { |
3375 | error_setg(errp, "Device '%s' has no medium", device); | |
3376 | goto out; | |
3377 | } | |
3378 | bs = blk_bs(blk); | |
3379 | ||
3380 | target_blk = blk_by_name(target); | |
3381 | if (!target_blk) { | |
5b347c54 | 3382 | error_setg(errp, "Device '%s' not found", target); |
c29c1dd3 FZ |
3383 | goto out; |
3384 | } | |
5433c24f HR |
3385 | |
3386 | if (!blk_is_available(target_blk)) { | |
3387 | error_setg(errp, "Device '%s' has no medium", target); | |
3388 | goto out; | |
3389 | } | |
3390 | target_bs = blk_bs(target_blk); | |
c29c1dd3 FZ |
3391 | |
3392 | bdrv_ref(target_bs); | |
3393 | bdrv_set_aio_context(target_bs, aio_context); | |
d58d8453 | 3394 | backup_start(bs, target_bs, speed, sync, NULL, on_source_error, |
78f51fde | 3395 | on_target_error, block_job_cb, bs, txn, &local_err); |
c29c1dd3 FZ |
3396 | if (local_err != NULL) { |
3397 | bdrv_unref(target_bs); | |
3398 | error_propagate(errp, local_err); | |
3399 | } | |
3400 | out: | |
3401 | aio_context_release(aio_context); | |
3402 | } | |
3403 | ||
78f51fde JS |
3404 | void qmp_blockdev_backup(const char *device, const char *target, |
3405 | enum MirrorSyncMode sync, | |
3406 | bool has_speed, int64_t speed, | |
3407 | bool has_on_source_error, | |
3408 | BlockdevOnError on_source_error, | |
3409 | bool has_on_target_error, | |
3410 | BlockdevOnError on_target_error, | |
3411 | Error **errp) | |
3412 | { | |
3413 | do_blockdev_backup(device, target, sync, has_speed, speed, | |
3414 | has_on_source_error, on_source_error, | |
3415 | has_on_target_error, on_target_error, | |
3416 | NULL, errp); | |
3417 | } | |
3418 | ||
4193cdd7 FZ |
3419 | /* Parameter check and block job starting for drive mirroring. |
3420 | * Caller should hold @device and @target's aio context (must be the same). | |
3421 | **/ | |
3422 | static void blockdev_mirror_common(BlockDriverState *bs, | |
3423 | BlockDriverState *target, | |
3424 | bool has_replaces, const char *replaces, | |
3425 | enum MirrorSyncMode sync, | |
3426 | bool has_speed, int64_t speed, | |
3427 | bool has_granularity, uint32_t granularity, | |
3428 | bool has_buf_size, int64_t buf_size, | |
3429 | bool has_on_source_error, | |
3430 | BlockdevOnError on_source_error, | |
3431 | bool has_on_target_error, | |
3432 | BlockdevOnError on_target_error, | |
3433 | bool has_unmap, bool unmap, | |
3434 | Error **errp) | |
d9b902db | 3435 | { |
d9b902db PB |
3436 | |
3437 | if (!has_speed) { | |
3438 | speed = 0; | |
3439 | } | |
b952b558 PB |
3440 | if (!has_on_source_error) { |
3441 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3442 | } | |
3443 | if (!has_on_target_error) { | |
3444 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3445 | } | |
eee13dfe PB |
3446 | if (!has_granularity) { |
3447 | granularity = 0; | |
3448 | } | |
08e4ed6c | 3449 | if (!has_buf_size) { |
48ac0a4d | 3450 | buf_size = 0; |
08e4ed6c | 3451 | } |
0fc9f8ea FZ |
3452 | if (!has_unmap) { |
3453 | unmap = true; | |
3454 | } | |
08e4ed6c | 3455 | |
eee13dfe | 3456 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
c6bd8c70 MA |
3457 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3458 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
3459 | return; |
3460 | } | |
3461 | if (granularity & (granularity - 1)) { | |
c6bd8c70 MA |
3462 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3463 | "power of 2"); | |
eee13dfe PB |
3464 | return; |
3465 | } | |
d9b902db | 3466 | |
4193cdd7 FZ |
3467 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
3468 | return; | |
3469 | } | |
e40e5027 FZ |
3470 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
3471 | return; | |
3472 | } | |
1f0c461b | 3473 | if (bdrv_has_blk(target)) { |
df92562e FZ |
3474 | error_setg(errp, "Cannot mirror to an attached block device"); |
3475 | return; | |
3476 | } | |
4193cdd7 FZ |
3477 | |
3478 | if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) { | |
3479 | sync = MIRROR_SYNC_MODE_FULL; | |
3480 | } | |
3481 | ||
3482 | /* pass the node name to replace to mirror start since it's loose coupling | |
3483 | * and will allow to check whether the node still exist at mirror completion | |
3484 | */ | |
3485 | mirror_start(bs, target, | |
3486 | has_replaces ? replaces : NULL, | |
3487 | speed, granularity, buf_size, sync, | |
3488 | on_source_error, on_target_error, unmap, | |
3489 | block_job_cb, bs, errp); | |
3490 | } | |
3491 | ||
3492 | void qmp_drive_mirror(const char *device, const char *target, | |
3493 | bool has_format, const char *format, | |
3494 | bool has_node_name, const char *node_name, | |
3495 | bool has_replaces, const char *replaces, | |
3496 | enum MirrorSyncMode sync, | |
3497 | bool has_mode, enum NewImageMode mode, | |
3498 | bool has_speed, int64_t speed, | |
3499 | bool has_granularity, uint32_t granularity, | |
3500 | bool has_buf_size, int64_t buf_size, | |
3501 | bool has_on_source_error, BlockdevOnError on_source_error, | |
3502 | bool has_on_target_error, BlockdevOnError on_target_error, | |
3503 | bool has_unmap, bool unmap, | |
3504 | Error **errp) | |
3505 | { | |
3506 | BlockDriverState *bs; | |
3507 | BlockBackend *blk; | |
3508 | BlockDriverState *source, *target_bs; | |
3509 | AioContext *aio_context; | |
3510 | Error *local_err = NULL; | |
3511 | QDict *options = NULL; | |
3512 | int flags; | |
3513 | int64_t size; | |
3514 | int ret; | |
3515 | ||
a0e8544c FZ |
3516 | blk = blk_by_name(device); |
3517 | if (!blk) { | |
75158ebb MA |
3518 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3519 | "Device '%s' not found", device); | |
d9b902db PB |
3520 | return; |
3521 | } | |
3522 | ||
5433c24f | 3523 | aio_context = blk_get_aio_context(blk); |
5a7e7a0b SH |
3524 | aio_context_acquire(aio_context); |
3525 | ||
5433c24f | 3526 | if (!blk_is_available(blk)) { |
c6bd8c70 | 3527 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
5a7e7a0b | 3528 | goto out; |
d9b902db | 3529 | } |
5433c24f | 3530 | bs = blk_bs(blk); |
4193cdd7 FZ |
3531 | if (!has_mode) { |
3532 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
3533 | } | |
d9b902db PB |
3534 | |
3535 | if (!has_format) { | |
3536 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
3537 | } | |
d9b902db | 3538 | |
61de4c68 | 3539 | flags = bs->open_flags | BDRV_O_RDWR; |
760e0063 | 3540 | source = backing_bs(bs); |
d9b902db PB |
3541 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { |
3542 | sync = MIRROR_SYNC_MODE_FULL; | |
3543 | } | |
117e0c82 HR |
3544 | if (sync == MIRROR_SYNC_MODE_NONE) { |
3545 | source = bs; | |
3546 | } | |
d9b902db | 3547 | |
ac3c5d83 SH |
3548 | size = bdrv_getlength(bs); |
3549 | if (size < 0) { | |
3550 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
5a7e7a0b | 3551 | goto out; |
ac3c5d83 SH |
3552 | } |
3553 | ||
09158f00 BC |
3554 | if (has_replaces) { |
3555 | BlockDriverState *to_replace_bs; | |
5a7e7a0b SH |
3556 | AioContext *replace_aio_context; |
3557 | int64_t replace_size; | |
09158f00 BC |
3558 | |
3559 | if (!has_node_name) { | |
3560 | error_setg(errp, "a node-name must be provided when replacing a" | |
3561 | " named node of the graph"); | |
5a7e7a0b | 3562 | goto out; |
09158f00 BC |
3563 | } |
3564 | ||
e12f3784 | 3565 | to_replace_bs = check_to_replace_node(bs, replaces, &local_err); |
09158f00 BC |
3566 | |
3567 | if (!to_replace_bs) { | |
3568 | error_propagate(errp, local_err); | |
5a7e7a0b | 3569 | goto out; |
09158f00 BC |
3570 | } |
3571 | ||
5a7e7a0b SH |
3572 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
3573 | aio_context_acquire(replace_aio_context); | |
3574 | replace_size = bdrv_getlength(to_replace_bs); | |
3575 | aio_context_release(replace_aio_context); | |
3576 | ||
3577 | if (size != replace_size) { | |
09158f00 BC |
3578 | error_setg(errp, "cannot replace image with a mirror image of " |
3579 | "different size"); | |
5a7e7a0b | 3580 | goto out; |
09158f00 BC |
3581 | } |
3582 | } | |
3583 | ||
14526864 HR |
3584 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
3585 | && mode != NEW_IMAGE_MODE_EXISTING) | |
3586 | { | |
d9b902db | 3587 | /* create new image w/o backing file */ |
e6641719 | 3588 | assert(format); |
cf8f2426 | 3589 | bdrv_img_create(target, format, |
f382d43a | 3590 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
3591 | } else { |
3592 | switch (mode) { | |
3593 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
3594 | break; |
3595 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
3596 | /* create new image with backing file */ | |
cf8f2426 LC |
3597 | bdrv_img_create(target, format, |
3598 | source->filename, | |
3599 | source->drv->format_name, | |
f382d43a | 3600 | NULL, size, flags, &local_err, false); |
d9b902db PB |
3601 | break; |
3602 | default: | |
3603 | abort(); | |
3604 | } | |
3605 | } | |
3606 | ||
84d18f06 | 3607 | if (local_err) { |
cf8f2426 | 3608 | error_propagate(errp, local_err); |
5a7e7a0b | 3609 | goto out; |
d9b902db PB |
3610 | } |
3611 | ||
e6641719 | 3612 | options = qdict_new(); |
4c828dc6 | 3613 | if (has_node_name) { |
4c828dc6 BC |
3614 | qdict_put(options, "node-name", qstring_from_str(node_name)); |
3615 | } | |
e6641719 HR |
3616 | if (format) { |
3617 | qdict_put(options, "driver", qstring_from_str(format)); | |
3618 | } | |
4c828dc6 | 3619 | |
b812f671 PB |
3620 | /* Mirroring takes care of copy-on-write using the source's backing |
3621 | * file. | |
3622 | */ | |
f67503e5 | 3623 | target_bs = NULL; |
4c828dc6 | 3624 | ret = bdrv_open(&target_bs, target, NULL, options, |
6ebf9aa2 | 3625 | flags | BDRV_O_NO_BACKING, &local_err); |
d9b902db | 3626 | if (ret < 0) { |
34b5d2c6 | 3627 | error_propagate(errp, local_err); |
5a7e7a0b | 3628 | goto out; |
d9b902db PB |
3629 | } |
3630 | ||
5a7e7a0b SH |
3631 | bdrv_set_aio_context(target_bs, aio_context); |
3632 | ||
4193cdd7 FZ |
3633 | blockdev_mirror_common(bs, target_bs, |
3634 | has_replaces, replaces, sync, | |
3635 | has_speed, speed, | |
3636 | has_granularity, granularity, | |
3637 | has_buf_size, buf_size, | |
3638 | has_on_source_error, on_source_error, | |
3639 | has_on_target_error, on_target_error, | |
3640 | has_unmap, unmap, | |
3641 | &local_err); | |
3642 | if (local_err) { | |
d9b902db | 3643 | error_propagate(errp, local_err); |
4193cdd7 | 3644 | bdrv_unref(target_bs); |
d9b902db | 3645 | } |
5a7e7a0b SH |
3646 | out: |
3647 | aio_context_release(aio_context); | |
d9b902db PB |
3648 | } |
3649 | ||
df92562e FZ |
3650 | void qmp_blockdev_mirror(const char *device, const char *target, |
3651 | bool has_replaces, const char *replaces, | |
3652 | MirrorSyncMode sync, | |
3653 | bool has_speed, int64_t speed, | |
3654 | bool has_granularity, uint32_t granularity, | |
3655 | bool has_buf_size, int64_t buf_size, | |
3656 | bool has_on_source_error, | |
3657 | BlockdevOnError on_source_error, | |
3658 | bool has_on_target_error, | |
3659 | BlockdevOnError on_target_error, | |
3660 | Error **errp) | |
3661 | { | |
3662 | BlockDriverState *bs; | |
3663 | BlockBackend *blk; | |
3664 | BlockDriverState *target_bs; | |
3665 | AioContext *aio_context; | |
3666 | Error *local_err = NULL; | |
3667 | ||
3668 | blk = blk_by_name(device); | |
3669 | if (!blk) { | |
3670 | error_setg(errp, "Device '%s' not found", device); | |
3671 | return; | |
3672 | } | |
3673 | bs = blk_bs(blk); | |
3674 | ||
3675 | if (!bs) { | |
3676 | error_setg(errp, "Device '%s' has no media", device); | |
3677 | return; | |
3678 | } | |
3679 | ||
3680 | target_bs = bdrv_lookup_bs(target, target, errp); | |
3681 | if (!target_bs) { | |
3682 | return; | |
3683 | } | |
3684 | ||
3685 | aio_context = bdrv_get_aio_context(bs); | |
3686 | aio_context_acquire(aio_context); | |
3687 | ||
3688 | bdrv_ref(target_bs); | |
3689 | bdrv_set_aio_context(target_bs, aio_context); | |
3690 | ||
3691 | blockdev_mirror_common(bs, target_bs, | |
3692 | has_replaces, replaces, sync, | |
3693 | has_speed, speed, | |
3694 | has_granularity, granularity, | |
3695 | has_buf_size, buf_size, | |
3696 | has_on_source_error, on_source_error, | |
3697 | has_on_target_error, on_target_error, | |
3698 | true, true, | |
3699 | &local_err); | |
3700 | if (local_err) { | |
3701 | error_propagate(errp, local_err); | |
3702 | bdrv_unref(target_bs); | |
3703 | } | |
3704 | ||
3705 | aio_context_release(aio_context); | |
3706 | } | |
3707 | ||
3d948cdf | 3708 | /* Get the block job for a given device name and acquire its AioContext */ |
24d6bffe MA |
3709 | static BlockJob *find_block_job(const char *device, AioContext **aio_context, |
3710 | Error **errp) | |
2d47c6e9 | 3711 | { |
a0e8544c | 3712 | BlockBackend *blk; |
2d47c6e9 SH |
3713 | BlockDriverState *bs; |
3714 | ||
5433c24f HR |
3715 | *aio_context = NULL; |
3716 | ||
a0e8544c FZ |
3717 | blk = blk_by_name(device); |
3718 | if (!blk) { | |
3d948cdf SH |
3719 | goto notfound; |
3720 | } | |
3721 | ||
5433c24f | 3722 | *aio_context = blk_get_aio_context(blk); |
3d948cdf SH |
3723 | aio_context_acquire(*aio_context); |
3724 | ||
5433c24f HR |
3725 | if (!blk_is_available(blk)) { |
3726 | goto notfound; | |
3727 | } | |
3728 | bs = blk_bs(blk); | |
3729 | ||
3d948cdf | 3730 | if (!bs->job) { |
3d948cdf | 3731 | goto notfound; |
2d47c6e9 | 3732 | } |
3d948cdf | 3733 | |
2d47c6e9 | 3734 | return bs->job; |
3d948cdf SH |
3735 | |
3736 | notfound: | |
2e3a0266 MA |
3737 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
3738 | "No active block job on device '%s'", device); | |
5433c24f HR |
3739 | if (*aio_context) { |
3740 | aio_context_release(*aio_context); | |
3741 | *aio_context = NULL; | |
3742 | } | |
3d948cdf | 3743 | return NULL; |
2d47c6e9 SH |
3744 | } |
3745 | ||
882ec7ce | 3746 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 | 3747 | { |
3d948cdf | 3748 | AioContext *aio_context; |
24d6bffe | 3749 | BlockJob *job = find_block_job(device, &aio_context, errp); |
2d47c6e9 SH |
3750 | |
3751 | if (!job) { | |
2d47c6e9 SH |
3752 | return; |
3753 | } | |
3754 | ||
882ec7ce | 3755 | block_job_set_speed(job, speed, errp); |
3d948cdf | 3756 | aio_context_release(aio_context); |
2d47c6e9 | 3757 | } |
370521a1 | 3758 | |
6e37fb81 PB |
3759 | void qmp_block_job_cancel(const char *device, |
3760 | bool has_force, bool force, Error **errp) | |
370521a1 | 3761 | { |
3d948cdf | 3762 | AioContext *aio_context; |
24d6bffe | 3763 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3764 | |
370521a1 | 3765 | if (!job) { |
370521a1 SH |
3766 | return; |
3767 | } | |
3d948cdf SH |
3768 | |
3769 | if (!has_force) { | |
3770 | force = false; | |
3771 | } | |
3772 | ||
751ebd76 | 3773 | if (job->user_paused && !force) { |
f231b88d CR |
3774 | error_setg(errp, "The block job for device '%s' is currently paused", |
3775 | device); | |
3d948cdf | 3776 | goto out; |
8acc72a4 | 3777 | } |
370521a1 SH |
3778 | |
3779 | trace_qmp_block_job_cancel(job); | |
3780 | block_job_cancel(job); | |
3d948cdf SH |
3781 | out: |
3782 | aio_context_release(aio_context); | |
370521a1 | 3783 | } |
fb5458cd | 3784 | |
6e37fb81 PB |
3785 | void qmp_block_job_pause(const char *device, Error **errp) |
3786 | { | |
3d948cdf | 3787 | AioContext *aio_context; |
24d6bffe | 3788 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3789 | |
751ebd76 | 3790 | if (!job || job->user_paused) { |
6e37fb81 PB |
3791 | return; |
3792 | } | |
3793 | ||
751ebd76 | 3794 | job->user_paused = true; |
6e37fb81 PB |
3795 | trace_qmp_block_job_pause(job); |
3796 | block_job_pause(job); | |
3d948cdf | 3797 | aio_context_release(aio_context); |
6e37fb81 PB |
3798 | } |
3799 | ||
3800 | void qmp_block_job_resume(const char *device, Error **errp) | |
3801 | { | |
3d948cdf | 3802 | AioContext *aio_context; |
24d6bffe | 3803 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3804 | |
751ebd76 | 3805 | if (!job || !job->user_paused) { |
6e37fb81 PB |
3806 | return; |
3807 | } | |
3808 | ||
751ebd76 | 3809 | job->user_paused = false; |
6e37fb81 PB |
3810 | trace_qmp_block_job_resume(job); |
3811 | block_job_resume(job); | |
3d948cdf | 3812 | aio_context_release(aio_context); |
6e37fb81 PB |
3813 | } |
3814 | ||
aeae883b PB |
3815 | void qmp_block_job_complete(const char *device, Error **errp) |
3816 | { | |
3d948cdf | 3817 | AioContext *aio_context; |
24d6bffe | 3818 | BlockJob *job = find_block_job(device, &aio_context, errp); |
aeae883b PB |
3819 | |
3820 | if (!job) { | |
aeae883b PB |
3821 | return; |
3822 | } | |
3823 | ||
3824 | trace_qmp_block_job_complete(job); | |
3825 | block_job_complete(job, errp); | |
3d948cdf | 3826 | aio_context_release(aio_context); |
aeae883b PB |
3827 | } |
3828 | ||
fa40e656 JC |
3829 | void qmp_change_backing_file(const char *device, |
3830 | const char *image_node_name, | |
3831 | const char *backing_file, | |
3832 | Error **errp) | |
3833 | { | |
a0e8544c | 3834 | BlockBackend *blk; |
fa40e656 | 3835 | BlockDriverState *bs = NULL; |
729962f6 | 3836 | AioContext *aio_context; |
fa40e656 JC |
3837 | BlockDriverState *image_bs = NULL; |
3838 | Error *local_err = NULL; | |
3839 | bool ro; | |
3840 | int open_flags; | |
3841 | int ret; | |
3842 | ||
a0e8544c FZ |
3843 | blk = blk_by_name(device); |
3844 | if (!blk) { | |
75158ebb MA |
3845 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3846 | "Device '%s' not found", device); | |
fa40e656 JC |
3847 | return; |
3848 | } | |
3849 | ||
5433c24f | 3850 | aio_context = blk_get_aio_context(blk); |
729962f6 SH |
3851 | aio_context_acquire(aio_context); |
3852 | ||
5433c24f HR |
3853 | if (!blk_is_available(blk)) { |
3854 | error_setg(errp, "Device '%s' has no medium", device); | |
3855 | goto out; | |
3856 | } | |
3857 | bs = blk_bs(blk); | |
3858 | ||
fa40e656 JC |
3859 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
3860 | if (local_err) { | |
3861 | error_propagate(errp, local_err); | |
729962f6 | 3862 | goto out; |
fa40e656 JC |
3863 | } |
3864 | ||
3865 | if (!image_bs) { | |
3866 | error_setg(errp, "image file not found"); | |
729962f6 | 3867 | goto out; |
fa40e656 JC |
3868 | } |
3869 | ||
3870 | if (bdrv_find_base(image_bs) == image_bs) { | |
3871 | error_setg(errp, "not allowing backing file change on an image " | |
3872 | "without a backing file"); | |
729962f6 | 3873 | goto out; |
fa40e656 JC |
3874 | } |
3875 | ||
3876 | /* even though we are not necessarily operating on bs, we need it to | |
3877 | * determine if block ops are currently prohibited on the chain */ | |
3878 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
729962f6 | 3879 | goto out; |
fa40e656 JC |
3880 | } |
3881 | ||
3882 | /* final sanity check */ | |
3883 | if (!bdrv_chain_contains(bs, image_bs)) { | |
3884 | error_setg(errp, "'%s' and image file are not in the same chain", | |
3885 | device); | |
729962f6 | 3886 | goto out; |
fa40e656 JC |
3887 | } |
3888 | ||
3889 | /* if not r/w, reopen to make r/w */ | |
3890 | open_flags = image_bs->open_flags; | |
3891 | ro = bdrv_is_read_only(image_bs); | |
3892 | ||
3893 | if (ro) { | |
3894 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); | |
3895 | if (local_err) { | |
3896 | error_propagate(errp, local_err); | |
729962f6 | 3897 | goto out; |
fa40e656 JC |
3898 | } |
3899 | } | |
3900 | ||
3901 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
3902 | image_bs->drv ? image_bs->drv->format_name : ""); | |
3903 | ||
3904 | if (ret < 0) { | |
3905 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
3906 | backing_file); | |
3907 | /* don't exit here, so we can try to restore open flags if | |
3908 | * appropriate */ | |
3909 | } | |
3910 | ||
3911 | if (ro) { | |
3912 | bdrv_reopen(image_bs, open_flags, &local_err); | |
3913 | if (local_err) { | |
3914 | error_propagate(errp, local_err); /* will preserve prior errp */ | |
3915 | } | |
3916 | } | |
729962f6 SH |
3917 | |
3918 | out: | |
3919 | aio_context_release(aio_context); | |
fa40e656 JC |
3920 | } |
3921 | ||
abb21ac3 KW |
3922 | void hmp_drive_add_node(Monitor *mon, const char *optstr) |
3923 | { | |
3924 | QemuOpts *opts; | |
3925 | QDict *qdict; | |
3926 | Error *local_err = NULL; | |
3927 | ||
3928 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); | |
3929 | if (!opts) { | |
3930 | return; | |
3931 | } | |
3932 | ||
3933 | qdict = qemu_opts_to_qdict(opts, NULL); | |
3934 | ||
3935 | if (!qdict_get_try_str(qdict, "node-name")) { | |
f8746fb8 | 3936 | QDECREF(qdict); |
abb21ac3 KW |
3937 | error_report("'node-name' needs to be specified"); |
3938 | goto out; | |
3939 | } | |
3940 | ||
3941 | BlockDriverState *bs = bds_tree_init(qdict, &local_err); | |
3942 | if (!bs) { | |
3943 | error_report_err(local_err); | |
3944 | goto out; | |
3945 | } | |
3946 | ||
3947 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); | |
3948 | ||
3949 | out: | |
3950 | qemu_opts_del(opts); | |
3951 | } | |
3952 | ||
d26c9a15 KW |
3953 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
3954 | { | |
3955 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
be4b67bc HR |
3956 | BlockDriverState *bs; |
3957 | BlockBackend *blk = NULL; | |
d26c9a15 KW |
3958 | QObject *obj; |
3959 | QDict *qdict; | |
d26c9a15 KW |
3960 | Error *local_err = NULL; |
3961 | ||
60e19e06 | 3962 | /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with |
d26c9a15 | 3963 | * cache.direct=false instead of silently switching to aio=threads, except |
60e19e06 | 3964 | * when called from drive_new(). |
d26c9a15 KW |
3965 | * |
3966 | * For now, simply forbidding the combination for all drivers will do. */ | |
3967 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
c6e0bd9b KW |
3968 | bool direct = options->has_cache && |
3969 | options->cache->has_direct && | |
3970 | options->cache->direct; | |
3971 | if (!direct) { | |
d26c9a15 KW |
3972 | error_setg(errp, "aio=native requires cache.direct=true"); |
3973 | goto fail; | |
3974 | } | |
3975 | } | |
3976 | ||
51e72bc1 EB |
3977 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), NULL, &options, |
3978 | &local_err); | |
84d18f06 | 3979 | if (local_err) { |
d26c9a15 KW |
3980 | error_propagate(errp, local_err); |
3981 | goto fail; | |
3982 | } | |
3983 | ||
3984 | obj = qmp_output_get_qobject(ov); | |
3985 | qdict = qobject_to_qdict(obj); | |
3986 | ||
3987 | qdict_flatten(qdict); | |
3988 | ||
be4b67bc HR |
3989 | if (options->has_id) { |
3990 | blk = blockdev_init(NULL, qdict, &local_err); | |
3991 | if (local_err) { | |
3992 | error_propagate(errp, local_err); | |
3993 | goto fail; | |
3994 | } | |
3995 | ||
3996 | bs = blk_bs(blk); | |
3997 | } else { | |
be4b67bc HR |
3998 | if (!qdict_get_try_str(qdict, "node-name")) { |
3999 | error_setg(errp, "'id' and/or 'node-name' need to be specified for " | |
4000 | "the root node"); | |
4001 | goto fail; | |
4002 | } | |
4003 | ||
bd745e23 HR |
4004 | bs = bds_tree_init(qdict, errp); |
4005 | if (!bs) { | |
be4b67bc HR |
4006 | goto fail; |
4007 | } | |
9c4218e9 HR |
4008 | |
4009 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); | |
d26c9a15 KW |
4010 | } |
4011 | ||
be4b67bc HR |
4012 | if (bs && bdrv_key_required(bs)) { |
4013 | if (blk) { | |
efaa7c4e | 4014 | monitor_remove_blk(blk); |
be4b67bc HR |
4015 | blk_unref(blk); |
4016 | } else { | |
9c4218e9 | 4017 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
be4b67bc HR |
4018 | bdrv_unref(bs); |
4019 | } | |
8ae8e904 KW |
4020 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
4021 | goto fail; | |
4022 | } | |
4023 | ||
d26c9a15 KW |
4024 | fail: |
4025 | qmp_output_visitor_cleanup(ov); | |
4026 | } | |
4027 | ||
81b936ae AG |
4028 | void qmp_x_blockdev_del(bool has_id, const char *id, |
4029 | bool has_node_name, const char *node_name, Error **errp) | |
4030 | { | |
4031 | AioContext *aio_context; | |
4032 | BlockBackend *blk; | |
4033 | BlockDriverState *bs; | |
4034 | ||
4035 | if (has_id && has_node_name) { | |
4036 | error_setg(errp, "Only one of id and node-name must be specified"); | |
4037 | return; | |
4038 | } else if (!has_id && !has_node_name) { | |
4039 | error_setg(errp, "No block device specified"); | |
4040 | return; | |
4041 | } | |
4042 | ||
4043 | if (has_id) { | |
efaa7c4e | 4044 | /* blk_by_name() never returns a BB that is not owned by the monitor */ |
81b936ae AG |
4045 | blk = blk_by_name(id); |
4046 | if (!blk) { | |
4047 | error_setg(errp, "Cannot find block backend %s", id); | |
4048 | return; | |
4049 | } | |
5cf87fd6 PB |
4050 | if (blk_legacy_dinfo(blk)) { |
4051 | error_setg(errp, "Deleting block backend added with drive-add" | |
4052 | " is not supported"); | |
4053 | return; | |
4054 | } | |
81b936ae AG |
4055 | if (blk_get_refcnt(blk) > 1) { |
4056 | error_setg(errp, "Block backend %s is in use", id); | |
4057 | return; | |
4058 | } | |
4059 | bs = blk_bs(blk); | |
4060 | aio_context = blk_get_aio_context(blk); | |
4061 | } else { | |
1f0c461b | 4062 | blk = NULL; |
81b936ae AG |
4063 | bs = bdrv_find_node(node_name); |
4064 | if (!bs) { | |
4065 | error_setg(errp, "Cannot find node %s", node_name); | |
4066 | return; | |
4067 | } | |
1f0c461b | 4068 | if (bdrv_has_blk(bs)) { |
81b936ae | 4069 | error_setg(errp, "Node %s is in use by %s", |
1f0c461b | 4070 | node_name, bdrv_get_parent_name(bs)); |
81b936ae AG |
4071 | return; |
4072 | } | |
4073 | aio_context = bdrv_get_aio_context(bs); | |
4074 | } | |
4075 | ||
4076 | aio_context_acquire(aio_context); | |
4077 | ||
4078 | if (bs) { | |
4079 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { | |
4080 | goto out; | |
4081 | } | |
4082 | ||
9c4218e9 HR |
4083 | if (!blk && !bs->monitor_list.tqe_prev) { |
4084 | error_setg(errp, "Node %s is not owned by the monitor", | |
4085 | bs->node_name); | |
4086 | goto out; | |
4087 | } | |
4088 | ||
4089 | if (bs->refcnt > 1) { | |
81b936ae AG |
4090 | error_setg(errp, "Block device %s is in use", |
4091 | bdrv_get_device_or_node_name(bs)); | |
4092 | goto out; | |
4093 | } | |
4094 | } | |
4095 | ||
4096 | if (blk) { | |
efaa7c4e | 4097 | monitor_remove_blk(blk); |
81b936ae AG |
4098 | blk_unref(blk); |
4099 | } else { | |
9c4218e9 | 4100 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
81b936ae AG |
4101 | bdrv_unref(bs); |
4102 | } | |
4103 | ||
4104 | out: | |
4105 | aio_context_release(aio_context); | |
4106 | } | |
4107 | ||
7f821597 WC |
4108 | static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs, |
4109 | const char *child_name) | |
4110 | { | |
4111 | BdrvChild *child; | |
4112 | ||
4113 | QLIST_FOREACH(child, &parent_bs->children, next) { | |
4114 | if (strcmp(child->name, child_name) == 0) { | |
4115 | return child; | |
4116 | } | |
4117 | } | |
4118 | ||
4119 | return NULL; | |
4120 | } | |
4121 | ||
4122 | void qmp_x_blockdev_change(const char *parent, bool has_child, | |
4123 | const char *child, bool has_node, | |
4124 | const char *node, Error **errp) | |
4125 | { | |
4126 | BlockDriverState *parent_bs, *new_bs = NULL; | |
4127 | BdrvChild *p_child; | |
4128 | ||
4129 | parent_bs = bdrv_lookup_bs(parent, parent, errp); | |
4130 | if (!parent_bs) { | |
4131 | return; | |
4132 | } | |
4133 | ||
4134 | if (has_child == has_node) { | |
4135 | if (has_child) { | |
4136 | error_setg(errp, "The parameters child and node are in conflict"); | |
4137 | } else { | |
4138 | error_setg(errp, "Either child or node must be specified"); | |
4139 | } | |
4140 | return; | |
4141 | } | |
4142 | ||
4143 | if (has_child) { | |
4144 | p_child = bdrv_find_child(parent_bs, child); | |
4145 | if (!p_child) { | |
4146 | error_setg(errp, "Node '%s' does not have child '%s'", | |
4147 | parent, child); | |
4148 | return; | |
4149 | } | |
4150 | bdrv_del_child(parent_bs, p_child, errp); | |
4151 | } | |
4152 | ||
4153 | if (has_node) { | |
4154 | new_bs = bdrv_find_node(node); | |
4155 | if (!new_bs) { | |
4156 | error_setg(errp, "Node '%s' not found", node); | |
4157 | return; | |
4158 | } | |
4159 | bdrv_add_child(parent_bs, new_bs, errp); | |
4160 | } | |
4161 | } | |
4162 | ||
fea68bb6 | 4163 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
fb5458cd | 4164 | { |
fea68bb6 MA |
4165 | BlockJobInfoList *head = NULL, **p_next = &head; |
4166 | BlockDriverState *bs; | |
88be7b4b | 4167 | BdrvNextIterator it; |
fb5458cd | 4168 | |
88be7b4b | 4169 | for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) { |
69691e72 SH |
4170 | AioContext *aio_context = bdrv_get_aio_context(bs); |
4171 | ||
4172 | aio_context_acquire(aio_context); | |
4173 | ||
fea68bb6 MA |
4174 | if (bs->job) { |
4175 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); | |
4176 | elem->value = block_job_query(bs->job); | |
4177 | *p_next = elem; | |
4178 | p_next = &elem->next; | |
4179 | } | |
69691e72 SH |
4180 | |
4181 | aio_context_release(aio_context); | |
fb5458cd | 4182 | } |
fb5458cd | 4183 | |
fea68bb6 | 4184 | return head; |
fb5458cd | 4185 | } |
4d454574 | 4186 | |
0006383e | 4187 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 4188 | .name = "drive", |
0006383e | 4189 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
4190 | .desc = { |
4191 | { | |
4d454574 PB |
4192 | .name = "snapshot", |
4193 | .type = QEMU_OPT_BOOL, | |
4194 | .help = "enable/disable snapshot mode", | |
a9384aff PB |
4195 | },{ |
4196 | .name = "discard", | |
4197 | .type = QEMU_OPT_STRING, | |
4198 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 PB |
4199 | },{ |
4200 | .name = "aio", | |
4201 | .type = QEMU_OPT_STRING, | |
4202 | .help = "host AIO implementation (threads, native)", | |
e4b24b49 KW |
4203 | },{ |
4204 | .name = BDRV_OPT_CACHE_WB, | |
4205 | .type = QEMU_OPT_BOOL, | |
4206 | .help = "Enable writeback mode", | |
4d454574 PB |
4207 | },{ |
4208 | .name = "format", | |
4209 | .type = QEMU_OPT_STRING, | |
4210 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
4211 | },{ |
4212 | .name = "rerror", | |
4213 | .type = QEMU_OPT_STRING, | |
4214 | .help = "read error action", | |
4215 | },{ | |
4216 | .name = "werror", | |
4217 | .type = QEMU_OPT_STRING, | |
4218 | .help = "write error action", | |
4d454574 | 4219 | },{ |
0f227a94 | 4220 | .name = "read-only", |
4d454574 PB |
4221 | .type = QEMU_OPT_BOOL, |
4222 | .help = "open drive file as read-only", | |
4223 | },{ | |
57975222 | 4224 | .name = "throttling.iops-total", |
4d454574 PB |
4225 | .type = QEMU_OPT_NUMBER, |
4226 | .help = "limit total I/O operations per second", | |
4227 | },{ | |
57975222 | 4228 | .name = "throttling.iops-read", |
4d454574 PB |
4229 | .type = QEMU_OPT_NUMBER, |
4230 | .help = "limit read operations per second", | |
4231 | },{ | |
57975222 | 4232 | .name = "throttling.iops-write", |
4d454574 PB |
4233 | .type = QEMU_OPT_NUMBER, |
4234 | .help = "limit write operations per second", | |
4235 | },{ | |
57975222 | 4236 | .name = "throttling.bps-total", |
4d454574 PB |
4237 | .type = QEMU_OPT_NUMBER, |
4238 | .help = "limit total bytes per second", | |
4239 | },{ | |
57975222 | 4240 | .name = "throttling.bps-read", |
4d454574 PB |
4241 | .type = QEMU_OPT_NUMBER, |
4242 | .help = "limit read bytes per second", | |
4243 | },{ | |
57975222 | 4244 | .name = "throttling.bps-write", |
4d454574 PB |
4245 | .type = QEMU_OPT_NUMBER, |
4246 | .help = "limit write bytes per second", | |
3e9fab69 BC |
4247 | },{ |
4248 | .name = "throttling.iops-total-max", | |
4249 | .type = QEMU_OPT_NUMBER, | |
4250 | .help = "I/O operations burst", | |
4251 | },{ | |
4252 | .name = "throttling.iops-read-max", | |
4253 | .type = QEMU_OPT_NUMBER, | |
4254 | .help = "I/O operations read burst", | |
4255 | },{ | |
4256 | .name = "throttling.iops-write-max", | |
4257 | .type = QEMU_OPT_NUMBER, | |
4258 | .help = "I/O operations write burst", | |
4259 | },{ | |
4260 | .name = "throttling.bps-total-max", | |
4261 | .type = QEMU_OPT_NUMBER, | |
4262 | .help = "total bytes burst", | |
4263 | },{ | |
4264 | .name = "throttling.bps-read-max", | |
4265 | .type = QEMU_OPT_NUMBER, | |
4266 | .help = "total bytes read burst", | |
4267 | },{ | |
4268 | .name = "throttling.bps-write-max", | |
4269 | .type = QEMU_OPT_NUMBER, | |
4270 | .help = "total bytes write burst", | |
8a0fc18d AG |
4271 | },{ |
4272 | .name = "throttling.iops-total-max-length", | |
4273 | .type = QEMU_OPT_NUMBER, | |
4274 | .help = "length of the iops-total-max burst period, in seconds", | |
4275 | },{ | |
4276 | .name = "throttling.iops-read-max-length", | |
4277 | .type = QEMU_OPT_NUMBER, | |
4278 | .help = "length of the iops-read-max burst period, in seconds", | |
4279 | },{ | |
4280 | .name = "throttling.iops-write-max-length", | |
4281 | .type = QEMU_OPT_NUMBER, | |
4282 | .help = "length of the iops-write-max burst period, in seconds", | |
4283 | },{ | |
4284 | .name = "throttling.bps-total-max-length", | |
4285 | .type = QEMU_OPT_NUMBER, | |
4286 | .help = "length of the bps-total-max burst period, in seconds", | |
4287 | },{ | |
4288 | .name = "throttling.bps-read-max-length", | |
4289 | .type = QEMU_OPT_NUMBER, | |
4290 | .help = "length of the bps-read-max burst period, in seconds", | |
4291 | },{ | |
4292 | .name = "throttling.bps-write-max-length", | |
4293 | .type = QEMU_OPT_NUMBER, | |
4294 | .help = "length of the bps-write-max burst period, in seconds", | |
2024c1df BC |
4295 | },{ |
4296 | .name = "throttling.iops-size", | |
4297 | .type = QEMU_OPT_NUMBER, | |
4298 | .help = "when limiting by iops max size of an I/O in bytes", | |
76f4afb4 AG |
4299 | },{ |
4300 | .name = "throttling.group", | |
4301 | .type = QEMU_OPT_STRING, | |
4302 | .help = "name of the block throttling group", | |
4d454574 PB |
4303 | },{ |
4304 | .name = "copy-on-read", | |
4305 | .type = QEMU_OPT_BOOL, | |
4306 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
4307 | },{ |
4308 | .name = "detect-zeroes", | |
4309 | .type = QEMU_OPT_STRING, | |
4310 | .help = "try to optimize zero writes (off, on, unmap)", | |
362e9299 AG |
4311 | },{ |
4312 | .name = "stats-account-invalid", | |
4313 | .type = QEMU_OPT_BOOL, | |
4314 | .help = "whether to account for invalid I/O operations " | |
4315 | "in the statistics", | |
4316 | },{ | |
4317 | .name = "stats-account-failed", | |
4318 | .type = QEMU_OPT_BOOL, | |
4319 | .help = "whether to account for failed I/O operations " | |
4320 | "in the statistics", | |
4d454574 PB |
4321 | }, |
4322 | { /* end of list */ } | |
4323 | }, | |
4324 | }; | |
0006383e | 4325 | |
bd745e23 HR |
4326 | static QemuOptsList qemu_root_bds_opts = { |
4327 | .name = "root-bds", | |
23f7fcb2 | 4328 | .head = QTAILQ_HEAD_INITIALIZER(qemu_root_bds_opts.head), |
bd745e23 HR |
4329 | .desc = { |
4330 | { | |
4331 | .name = "discard", | |
4332 | .type = QEMU_OPT_STRING, | |
4333 | .help = "discard operation (ignore/off, unmap/on)", | |
bd745e23 HR |
4334 | },{ |
4335 | .name = "aio", | |
4336 | .type = QEMU_OPT_STRING, | |
4337 | .help = "host AIO implementation (threads, native)", | |
4338 | },{ | |
4339 | .name = "read-only", | |
4340 | .type = QEMU_OPT_BOOL, | |
4341 | .help = "open drive file as read-only", | |
4342 | },{ | |
4343 | .name = "copy-on-read", | |
4344 | .type = QEMU_OPT_BOOL, | |
4345 | .help = "copy read data from backing file into image file", | |
4346 | },{ | |
4347 | .name = "detect-zeroes", | |
4348 | .type = QEMU_OPT_STRING, | |
4349 | .help = "try to optimize zero writes (off, on, unmap)", | |
4350 | }, | |
4351 | { /* end of list */ } | |
4352 | }, | |
4353 | }; | |
4354 | ||
0006383e KW |
4355 | QemuOptsList qemu_drive_opts = { |
4356 | .name = "drive", | |
4357 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
4358 | .desc = { | |
492fdc6f KW |
4359 | /* |
4360 | * no elements => accept any params | |
4361 | * validation will happen later | |
4362 | */ | |
0006383e KW |
4363 | { /* end of list */ } |
4364 | }, | |
4365 | }; |