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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 | * | |
76 | * All controllers used to imlement if=T drives need to support | |
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; |
26f54e9a | 472 | BlockBackend *blk; |
a0f1eab1 | 473 | BlockDriverState *bs; |
cc0681c4 | 474 | ThrottleConfig cfg; |
666daa68 | 475 | int snapshot = 0; |
c546194f | 476 | Error *error = NULL; |
0006383e | 477 | QemuOpts *opts; |
40119eff AG |
478 | QDict *interval_dict = NULL; |
479 | QList *interval_list = NULL; | |
0006383e | 480 | const char *id; |
fbf8175e HR |
481 | BlockdevDetectZeroesOptions detect_zeroes = |
482 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; | |
483 | const char *throttling_group = NULL; | |
666daa68 | 484 | |
f298d071 KW |
485 | /* Check common options by copying from bs_opts to opts, all other options |
486 | * stay in bs_opts for processing by bdrv_open(). */ | |
487 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 488 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 489 | if (error) { |
b681072d | 490 | error_propagate(errp, error); |
6376f952 | 491 | goto err_no_opts; |
0006383e KW |
492 | } |
493 | ||
0006383e | 494 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 495 | if (error) { |
b681072d | 496 | error_propagate(errp, error); |
ec9c10d2 | 497 | goto early_err; |
0006383e KW |
498 | } |
499 | ||
500 | if (id) { | |
501 | qdict_del(bs_opts, "id"); | |
502 | } | |
503 | ||
666daa68 | 504 | /* extract parameters */ |
666daa68 | 505 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
666daa68 | 506 | |
362e9299 AG |
507 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
508 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); | |
509 | ||
40119eff AG |
510 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
511 | qdict_array_split(interval_dict, &interval_list); | |
512 | ||
513 | if (qdict_size(interval_dict) != 0) { | |
514 | error_setg(errp, "Invalid option stats-intervals.%s", | |
515 | qdict_first(interval_dict)->key); | |
516 | goto early_err; | |
517 | } | |
2be5506f | 518 | |
fbf8175e HR |
519 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
520 | &detect_zeroes, &error); | |
521 | if (error) { | |
522 | error_propagate(errp, error); | |
523 | goto early_err; | |
666daa68 | 524 | } |
666daa68 MA |
525 | |
526 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
527 | if (is_help_option(buf)) { |
528 | error_printf("Supported formats:"); | |
529 | bdrv_iterate_format(bdrv_format_print, NULL); | |
530 | error_printf("\n"); | |
ec9c10d2 | 531 | goto early_err; |
666daa68 | 532 | } |
74fe54f2 | 533 | |
e4342ce5 HR |
534 | if (qdict_haskey(bs_opts, "driver")) { |
535 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); | |
ec9c10d2 | 536 | goto early_err; |
6db5f5d6 | 537 | } |
e4342ce5 | 538 | qdict_put(bs_opts, "driver", qstring_from_str(buf)); |
666daa68 MA |
539 | } |
540 | ||
92aa5c6d | 541 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 542 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 543 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 544 | if (error) { |
b681072d | 545 | error_propagate(errp, error); |
ec9c10d2 | 546 | goto early_err; |
666daa68 MA |
547 | } |
548 | } | |
549 | ||
92aa5c6d | 550 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 551 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 552 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 553 | if (error) { |
b681072d | 554 | error_propagate(errp, error); |
ec9c10d2 | 555 | goto early_err; |
666daa68 MA |
556 | } |
557 | } | |
558 | ||
5ec18f8c | 559 | if (snapshot) { |
91a097e7 | 560 | bdrv_flags |= BDRV_O_SNAPSHOT; |
5ec18f8c HR |
561 | } |
562 | ||
326642bc | 563 | /* init */ |
39c4ae94 | 564 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
5ec18f8c HR |
565 | BlockBackendRootState *blk_rs; |
566 | ||
efaa7c4e | 567 | blk = blk_new(errp); |
e4342ce5 HR |
568 | if (!blk) { |
569 | goto early_err; | |
570 | } | |
abd7f68d | 571 | |
5ec18f8c HR |
572 | blk_rs = blk_get_root_state(blk); |
573 | blk_rs->open_flags = bdrv_flags; | |
fbf8175e | 574 | blk_rs->read_only = !(bdrv_flags & BDRV_O_RDWR); |
5ec18f8c HR |
575 | blk_rs->detect_zeroes = detect_zeroes; |
576 | ||
577 | if (throttle_enabled(&cfg)) { | |
578 | if (!throttling_group) { | |
579 | throttling_group = blk_name(blk); | |
580 | } | |
581 | blk_rs->throttle_group = g_strdup(throttling_group); | |
582 | blk_rs->throttle_state = throttle_group_incref(throttling_group); | |
583 | blk_rs->throttle_state->cfg = cfg; | |
584 | } | |
0563e191 | 585 | |
e4342ce5 HR |
586 | QDECREF(bs_opts); |
587 | } else { | |
588 | if (file && !*file) { | |
c2ad1b0c | 589 | file = NULL; |
c2ad1b0c | 590 | } |
666daa68 | 591 | |
91a097e7 KW |
592 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
593 | * with other callers) rather than what we want as the real defaults. | |
594 | * Apply the defaults here instead. */ | |
595 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_WB, "on"); | |
596 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); | |
597 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
598 | ||
12d5ee3a KW |
599 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
600 | bdrv_flags |= BDRV_O_INACTIVE; | |
601 | } | |
602 | ||
efaa7c4e | 603 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
e4342ce5 HR |
604 | if (!blk) { |
605 | goto err_no_bs_opts; | |
606 | } | |
607 | bs = blk_bs(blk); | |
ed9d4205 | 608 | |
5ec18f8c | 609 | bs->detect_zeroes = detect_zeroes; |
666daa68 | 610 | |
5ec18f8c HR |
611 | /* disk I/O throttling */ |
612 | if (throttle_enabled(&cfg)) { | |
613 | if (!throttling_group) { | |
614 | throttling_group = blk_name(blk); | |
615 | } | |
616 | bdrv_io_limits_enable(bs, throttling_group); | |
617 | bdrv_set_io_limits(bs, &cfg); | |
618 | } | |
0006383e | 619 | |
5ec18f8c HR |
620 | if (bdrv_key_required(bs)) { |
621 | autostart = 0; | |
76f4afb4 | 622 | } |
362e9299 AG |
623 | |
624 | block_acct_init(blk_get_stats(blk), account_invalid, account_failed); | |
2be5506f | 625 | |
40119eff AG |
626 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
627 | blk_unref(blk); | |
628 | blk = NULL; | |
629 | goto err_no_bs_opts; | |
2be5506f | 630 | } |
666daa68 MA |
631 | } |
632 | ||
5ec18f8c | 633 | blk_set_on_error(blk, on_read_error, on_write_error); |
0006383e | 634 | |
efaa7c4e HR |
635 | if (!monitor_add_blk(blk, qemu_opts_id(opts), errp)) { |
636 | blk_unref(blk); | |
637 | blk = NULL; | |
638 | goto err_no_bs_opts; | |
639 | } | |
640 | ||
e4342ce5 | 641 | err_no_bs_opts: |
0006383e | 642 | qemu_opts_del(opts); |
40119eff AG |
643 | QDECREF(interval_dict); |
644 | QDECREF(interval_list); | |
18e46a03 | 645 | return blk; |
a9ae2bff | 646 | |
ec9c10d2 | 647 | early_err: |
ec9c10d2 | 648 | qemu_opts_del(opts); |
40119eff AG |
649 | QDECREF(interval_dict); |
650 | QDECREF(interval_list); | |
6376f952 MA |
651 | err_no_opts: |
652 | QDECREF(bs_opts); | |
a9ae2bff | 653 | return NULL; |
666daa68 MA |
654 | } |
655 | ||
bd745e23 HR |
656 | static QemuOptsList qemu_root_bds_opts; |
657 | ||
658 | /* Takes the ownership of bs_opts */ | |
659 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) | |
660 | { | |
661 | BlockDriverState *bs; | |
662 | QemuOpts *opts; | |
663 | Error *local_error = NULL; | |
664 | BlockdevDetectZeroesOptions detect_zeroes; | |
665 | int ret; | |
666 | int bdrv_flags = 0; | |
667 | ||
668 | opts = qemu_opts_create(&qemu_root_bds_opts, NULL, 1, errp); | |
669 | if (!opts) { | |
670 | goto fail; | |
671 | } | |
672 | ||
673 | qemu_opts_absorb_qdict(opts, bs_opts, &local_error); | |
674 | if (local_error) { | |
675 | error_propagate(errp, local_error); | |
676 | goto fail; | |
677 | } | |
678 | ||
679 | extract_common_blockdev_options(opts, &bdrv_flags, NULL, NULL, | |
680 | &detect_zeroes, &local_error); | |
681 | if (local_error) { | |
682 | error_propagate(errp, local_error); | |
683 | goto fail; | |
684 | } | |
685 | ||
a81d6164 KW |
686 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
687 | * with other callers) rather than what we want as the real defaults. | |
688 | * Apply the defaults here instead. */ | |
689 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_WB, "on"); | |
690 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); | |
691 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
692 | ||
12d5ee3a KW |
693 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
694 | bdrv_flags |= BDRV_O_INACTIVE; | |
695 | } | |
696 | ||
bd745e23 HR |
697 | bs = NULL; |
698 | ret = bdrv_open(&bs, NULL, NULL, bs_opts, bdrv_flags, errp); | |
699 | if (ret < 0) { | |
700 | goto fail_no_bs_opts; | |
701 | } | |
702 | ||
703 | bs->detect_zeroes = detect_zeroes; | |
704 | ||
705 | fail_no_bs_opts: | |
706 | qemu_opts_del(opts); | |
707 | return bs; | |
708 | ||
709 | fail: | |
710 | qemu_opts_del(opts); | |
711 | QDECREF(bs_opts); | |
712 | return NULL; | |
713 | } | |
714 | ||
9c4218e9 HR |
715 | void blockdev_close_all_bdrv_states(void) |
716 | { | |
717 | BlockDriverState *bs, *next_bs; | |
718 | ||
719 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { | |
720 | AioContext *ctx = bdrv_get_aio_context(bs); | |
721 | ||
722 | aio_context_acquire(ctx); | |
723 | bdrv_unref(bs); | |
724 | aio_context_release(ctx); | |
725 | } | |
726 | } | |
727 | ||
262b4e8f HR |
728 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
729 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) | |
730 | { | |
731 | return bs ? QTAILQ_NEXT(bs, monitor_list) | |
732 | : QTAILQ_FIRST(&monitor_bdrv_states); | |
733 | } | |
734 | ||
5abbf0ee KW |
735 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
736 | Error **errp) | |
57975222 KW |
737 | { |
738 | const char *value; | |
739 | ||
740 | value = qemu_opt_get(opts, from); | |
741 | if (value) { | |
5abbf0ee KW |
742 | if (qemu_opt_find(opts, to)) { |
743 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " | |
744 | "same time", to, from); | |
745 | return; | |
746 | } | |
20d6cd47 JL |
747 | } |
748 | ||
749 | /* rename all items in opts */ | |
750 | while ((value = qemu_opt_get(opts, from))) { | |
f43e47db | 751 | qemu_opt_set(opts, to, value, &error_abort); |
57975222 KW |
752 | qemu_opt_unset(opts, from); |
753 | } | |
754 | } | |
755 | ||
33cb7dc8 KW |
756 | QemuOptsList qemu_legacy_drive_opts = { |
757 | .name = "drive", | |
758 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
759 | .desc = { | |
760 | { | |
87a899c5 KW |
761 | .name = "bus", |
762 | .type = QEMU_OPT_NUMBER, | |
763 | .help = "bus number", | |
764 | },{ | |
765 | .name = "unit", | |
766 | .type = QEMU_OPT_NUMBER, | |
767 | .help = "unit number (i.e. lun for scsi)", | |
768 | },{ | |
769 | .name = "index", | |
770 | .type = QEMU_OPT_NUMBER, | |
771 | .help = "index number", | |
772 | },{ | |
33cb7dc8 KW |
773 | .name = "media", |
774 | .type = QEMU_OPT_STRING, | |
775 | .help = "media type (disk, cdrom)", | |
593d464b KW |
776 | },{ |
777 | .name = "if", | |
778 | .type = QEMU_OPT_STRING, | |
779 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
780 | },{ |
781 | .name = "cyls", | |
782 | .type = QEMU_OPT_NUMBER, | |
783 | .help = "number of cylinders (ide disk geometry)", | |
784 | },{ | |
785 | .name = "heads", | |
786 | .type = QEMU_OPT_NUMBER, | |
787 | .help = "number of heads (ide disk geometry)", | |
788 | },{ | |
789 | .name = "secs", | |
790 | .type = QEMU_OPT_NUMBER, | |
791 | .help = "number of sectors (ide disk geometry)", | |
792 | },{ | |
793 | .name = "trans", | |
794 | .type = QEMU_OPT_STRING, | |
795 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
796 | },{ |
797 | .name = "boot", | |
798 | .type = QEMU_OPT_BOOL, | |
799 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
800 | },{ |
801 | .name = "addr", | |
802 | .type = QEMU_OPT_STRING, | |
803 | .help = "pci address (virtio only)", | |
bcf83158 KW |
804 | },{ |
805 | .name = "serial", | |
806 | .type = QEMU_OPT_STRING, | |
807 | .help = "disk serial number", | |
d095b465 HR |
808 | },{ |
809 | .name = "file", | |
810 | .type = QEMU_OPT_STRING, | |
811 | .help = "file name", | |
33cb7dc8 | 812 | }, |
0ebd24e0 KW |
813 | |
814 | /* Options that are passed on, but have special semantics with -drive */ | |
815 | { | |
816 | .name = "read-only", | |
817 | .type = QEMU_OPT_BOOL, | |
818 | .help = "open drive file as read-only", | |
ee13ed1c KW |
819 | },{ |
820 | .name = "rerror", | |
821 | .type = QEMU_OPT_STRING, | |
822 | .help = "read error action", | |
823 | },{ | |
824 | .name = "werror", | |
825 | .type = QEMU_OPT_STRING, | |
826 | .help = "write error action", | |
0ebd24e0 KW |
827 | },{ |
828 | .name = "copy-on-read", | |
829 | .type = QEMU_OPT_BOOL, | |
830 | .help = "copy read data from backing file into image file", | |
831 | }, | |
832 | ||
33cb7dc8 KW |
833 | { /* end of list */ } |
834 | }, | |
835 | }; | |
836 | ||
60e19e06 | 837 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
57975222 | 838 | { |
29c4e2b5 | 839 | const char *value; |
18e46a03 | 840 | BlockBackend *blk; |
33cb7dc8 | 841 | DriveInfo *dinfo = NULL; |
f298d071 | 842 | QDict *bs_opts; |
33cb7dc8 KW |
843 | QemuOpts *legacy_opts; |
844 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 845 | BlockInterfaceType type; |
b41a7338 | 846 | int cyls, heads, secs, translation; |
87a899c5 | 847 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 848 | const char *devaddr; |
ee13ed1c | 849 | const char *werror, *rerror; |
a7fdbcf0 FZ |
850 | bool read_only = false; |
851 | bool copy_on_read; | |
bcf83158 | 852 | const char *serial; |
d095b465 | 853 | const char *filename; |
33cb7dc8 | 854 | Error *local_err = NULL; |
247147fb | 855 | int i; |
29c4e2b5 | 856 | |
57975222 | 857 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
858 | static const struct { |
859 | const char *from; | |
860 | const char *to; | |
861 | } opt_renames[] = { | |
862 | { "iops", "throttling.iops-total" }, | |
863 | { "iops_rd", "throttling.iops-read" }, | |
864 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 865 | |
247147fb KW |
866 | { "bps", "throttling.bps-total" }, |
867 | { "bps_rd", "throttling.bps-read" }, | |
868 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 869 | |
247147fb KW |
870 | { "iops_max", "throttling.iops-total-max" }, |
871 | { "iops_rd_max", "throttling.iops-read-max" }, | |
872 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 873 | |
247147fb KW |
874 | { "bps_max", "throttling.bps-total-max" }, |
875 | { "bps_rd_max", "throttling.bps-read-max" }, | |
876 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 877 | |
247147fb | 878 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 879 | |
76f4afb4 AG |
880 | { "group", "throttling.group" }, |
881 | ||
247147fb KW |
882 | { "readonly", "read-only" }, |
883 | }; | |
884 | ||
885 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
5abbf0ee KW |
886 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
887 | &local_err); | |
888 | if (local_err) { | |
565f65d2 | 889 | error_report_err(local_err); |
5abbf0ee KW |
890 | return NULL; |
891 | } | |
247147fb | 892 | } |
0f227a94 | 893 | |
29c4e2b5 KW |
894 | value = qemu_opt_get(all_opts, "cache"); |
895 | if (value) { | |
896 | int flags = 0; | |
897 | ||
898 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
899 | error_report("invalid cache option"); | |
900 | return NULL; | |
901 | } | |
902 | ||
903 | /* Specific options take precedence */ | |
54861b92 KW |
904 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
905 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, | |
cccb7967 | 906 | !!(flags & BDRV_O_CACHE_WB), &error_abort); |
29c4e2b5 | 907 | } |
54861b92 KW |
908 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
909 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, | |
cccb7967 | 910 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
29c4e2b5 | 911 | } |
54861b92 KW |
912 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
913 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, | |
cccb7967 | 914 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
29c4e2b5 KW |
915 | } |
916 | qemu_opt_unset(all_opts, "cache"); | |
917 | } | |
918 | ||
f298d071 KW |
919 | /* Get a QDict for processing the options */ |
920 | bs_opts = qdict_new(); | |
921 | qemu_opts_to_qdict(all_opts, bs_opts); | |
922 | ||
87ea75d5 PC |
923 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
924 | &error_abort); | |
33cb7dc8 | 925 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 926 | if (local_err) { |
565f65d2 | 927 | error_report_err(local_err); |
33cb7dc8 KW |
928 | goto fail; |
929 | } | |
930 | ||
26929298 KW |
931 | /* Deprecated option boot=[on|off] */ |
932 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
933 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
934 | "ignored. Future versions will reject this parameter. Please " | |
935 | "update your scripts.\n"); | |
936 | } | |
937 | ||
33cb7dc8 KW |
938 | /* Media type */ |
939 | value = qemu_opt_get(legacy_opts, "media"); | |
940 | if (value) { | |
941 | if (!strcmp(value, "disk")) { | |
942 | media = MEDIA_DISK; | |
943 | } else if (!strcmp(value, "cdrom")) { | |
944 | media = MEDIA_CDROM; | |
a7fdbcf0 | 945 | read_only = true; |
33cb7dc8 KW |
946 | } else { |
947 | error_report("'%s' invalid media", value); | |
948 | goto fail; | |
949 | } | |
950 | } | |
951 | ||
0ebd24e0 | 952 | /* copy-on-read is disabled with a warning for read-only devices */ |
a7fdbcf0 | 953 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
0ebd24e0 KW |
954 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
955 | ||
956 | if (read_only && copy_on_read) { | |
957 | error_report("warning: disabling copy-on-read on read-only drive"); | |
958 | copy_on_read = false; | |
959 | } | |
960 | ||
961 | qdict_put(bs_opts, "read-only", | |
962 | qstring_from_str(read_only ? "on" : "off")); | |
963 | qdict_put(bs_opts, "copy-on-read", | |
964 | qstring_from_str(copy_on_read ? "on" :"off")); | |
965 | ||
593d464b KW |
966 | /* Controller type */ |
967 | value = qemu_opt_get(legacy_opts, "if"); | |
968 | if (value) { | |
969 | for (type = 0; | |
970 | type < IF_COUNT && strcmp(value, if_name[type]); | |
971 | type++) { | |
972 | } | |
973 | if (type == IF_COUNT) { | |
974 | error_report("unsupported bus type '%s'", value); | |
975 | goto fail; | |
976 | } | |
977 | } else { | |
978 | type = block_default_type; | |
979 | } | |
980 | ||
b41a7338 KW |
981 | /* Geometry */ |
982 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
983 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
984 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
985 | ||
986 | if (cyls || heads || secs) { | |
987 | if (cyls < 1) { | |
988 | error_report("invalid physical cyls number"); | |
989 | goto fail; | |
990 | } | |
991 | if (heads < 1) { | |
992 | error_report("invalid physical heads number"); | |
993 | goto fail; | |
994 | } | |
995 | if (secs < 1) { | |
996 | error_report("invalid physical secs number"); | |
997 | goto fail; | |
998 | } | |
999 | } | |
1000 | ||
1001 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
1002 | value = qemu_opt_get(legacy_opts, "trans"); | |
1003 | if (value != NULL) { | |
1004 | if (!cyls) { | |
1005 | error_report("'%s' trans must be used with cyls, heads and secs", | |
1006 | value); | |
1007 | goto fail; | |
1008 | } | |
1009 | if (!strcmp(value, "none")) { | |
1010 | translation = BIOS_ATA_TRANSLATION_NONE; | |
1011 | } else if (!strcmp(value, "lba")) { | |
1012 | translation = BIOS_ATA_TRANSLATION_LBA; | |
f31c41ff PB |
1013 | } else if (!strcmp(value, "large")) { |
1014 | translation = BIOS_ATA_TRANSLATION_LARGE; | |
1015 | } else if (!strcmp(value, "rechs")) { | |
1016 | translation = BIOS_ATA_TRANSLATION_RECHS; | |
b41a7338 KW |
1017 | } else if (!strcmp(value, "auto")) { |
1018 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
1019 | } else { | |
1020 | error_report("'%s' invalid translation type", value); | |
1021 | goto fail; | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | if (media == MEDIA_CDROM) { | |
1026 | if (cyls || secs || heads) { | |
1027 | error_report("CHS can't be set with media=cdrom"); | |
1028 | goto fail; | |
1029 | } | |
1030 | } | |
1031 | ||
87a899c5 KW |
1032 | /* Device address specified by bus/unit or index. |
1033 | * If none was specified, try to find the first free one. */ | |
1034 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
1035 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
1036 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
1037 | ||
1038 | max_devs = if_max_devs[type]; | |
1039 | ||
1040 | if (index != -1) { | |
1041 | if (bus_id != 0 || unit_id != -1) { | |
1042 | error_report("index cannot be used with bus and unit"); | |
1043 | goto fail; | |
1044 | } | |
1045 | bus_id = drive_index_to_bus_id(type, index); | |
1046 | unit_id = drive_index_to_unit_id(type, index); | |
1047 | } | |
1048 | ||
1049 | if (unit_id == -1) { | |
1050 | unit_id = 0; | |
1051 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
1052 | unit_id++; | |
1053 | if (max_devs && unit_id >= max_devs) { | |
1054 | unit_id -= max_devs; | |
1055 | bus_id++; | |
1056 | } | |
1057 | } | |
1058 | } | |
1059 | ||
1060 | if (max_devs && unit_id >= max_devs) { | |
1061 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
1062 | goto fail; | |
1063 | } | |
1064 | ||
1065 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
1066 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
1067 | bus_id, unit_id, index); | |
1068 | goto fail; | |
1069 | } | |
1070 | ||
bcf83158 KW |
1071 | /* Serial number */ |
1072 | serial = qemu_opt_get(legacy_opts, "serial"); | |
1073 | ||
87a899c5 KW |
1074 | /* no id supplied -> create one */ |
1075 | if (qemu_opts_id(all_opts) == NULL) { | |
1076 | char *new_id; | |
1077 | const char *mediastr = ""; | |
1078 | if (type == IF_IDE || type == IF_SCSI) { | |
1079 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
1080 | } | |
1081 | if (max_devs) { | |
1082 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
1083 | mediastr, unit_id); | |
1084 | } else { | |
1085 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
1086 | mediastr, unit_id); | |
1087 | } | |
1088 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
1089 | g_free(new_id); | |
1090 | } | |
1091 | ||
394c7d4d KW |
1092 | /* Add virtio block device */ |
1093 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
1094 | if (devaddr && type != IF_VIRTIO) { | |
1095 | error_report("addr is not supported by this bus type"); | |
1096 | goto fail; | |
1097 | } | |
1098 | ||
1099 | if (type == IF_VIRTIO) { | |
1100 | QemuOpts *devopts; | |
87ea75d5 PC |
1101 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
1102 | &error_abort); | |
394c7d4d | 1103 | if (arch_type == QEMU_ARCH_S390X) { |
1f68f1d3 | 1104 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
394c7d4d | 1105 | } else { |
f43e47db | 1106 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
394c7d4d | 1107 | } |
f43e47db MA |
1108 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
1109 | &error_abort); | |
394c7d4d | 1110 | if (devaddr) { |
f43e47db | 1111 | qemu_opt_set(devopts, "addr", devaddr, &error_abort); |
394c7d4d KW |
1112 | } |
1113 | } | |
1114 | ||
d095b465 HR |
1115 | filename = qemu_opt_get(legacy_opts, "file"); |
1116 | ||
ee13ed1c KW |
1117 | /* Check werror/rerror compatibility with if=... */ |
1118 | werror = qemu_opt_get(legacy_opts, "werror"); | |
1119 | if (werror != NULL) { | |
1120 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
1121 | type != IF_NONE) { | |
1122 | error_report("werror is not supported by this bus type"); | |
1123 | goto fail; | |
1124 | } | |
1125 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); | |
1126 | } | |
1127 | ||
1128 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
1129 | if (rerror != NULL) { | |
1130 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
1131 | type != IF_NONE) { | |
1132 | error_report("rerror is not supported by this bus type"); | |
1133 | goto fail; | |
1134 | } | |
1135 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); | |
1136 | } | |
1137 | ||
2d246f01 | 1138 | /* Actual block device init: Functionality shared with blockdev-add */ |
18e46a03 | 1139 | blk = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 1140 | bs_opts = NULL; |
18e46a03 | 1141 | if (!blk) { |
84d18f06 | 1142 | if (local_err) { |
565f65d2 | 1143 | error_report_err(local_err); |
b681072d | 1144 | } |
2d246f01 | 1145 | goto fail; |
b681072d | 1146 | } else { |
84d18f06 | 1147 | assert(!local_err); |
2d246f01 KW |
1148 | } |
1149 | ||
26f8b3a8 MA |
1150 | /* Create legacy DriveInfo */ |
1151 | dinfo = g_malloc0(sizeof(*dinfo)); | |
f298d071 | 1152 | dinfo->opts = all_opts; |
2d246f01 | 1153 | |
b41a7338 KW |
1154 | dinfo->cyls = cyls; |
1155 | dinfo->heads = heads; | |
1156 | dinfo->secs = secs; | |
1157 | dinfo->trans = translation; | |
1158 | ||
ee13ed1c | 1159 | dinfo->type = type; |
87a899c5 KW |
1160 | dinfo->bus = bus_id; |
1161 | dinfo->unit = unit_id; | |
394c7d4d | 1162 | dinfo->devaddr = devaddr; |
bcf83158 KW |
1163 | dinfo->serial = g_strdup(serial); |
1164 | ||
26f8b3a8 MA |
1165 | blk_set_legacy_dinfo(blk, dinfo); |
1166 | ||
e34ef046 KW |
1167 | switch(type) { |
1168 | case IF_IDE: | |
1169 | case IF_SCSI: | |
1170 | case IF_XEN: | |
1171 | case IF_NONE: | |
1172 | dinfo->media_cd = media == MEDIA_CDROM; | |
1173 | break; | |
1174 | default: | |
1175 | break; | |
1176 | } | |
1177 | ||
2d246f01 | 1178 | fail: |
33cb7dc8 | 1179 | qemu_opts_del(legacy_opts); |
3cb0e25c | 1180 | QDECREF(bs_opts); |
2d246f01 | 1181 | return dinfo; |
57975222 KW |
1182 | } |
1183 | ||
3e5a50d6 | 1184 | void hmp_commit(Monitor *mon, const QDict *qdict) |
666daa68 | 1185 | { |
666daa68 | 1186 | const char *device = qdict_get_str(qdict, "device"); |
a0e8544c | 1187 | BlockBackend *blk; |
e8877497 | 1188 | int ret; |
666daa68 | 1189 | |
6ab4b5ab | 1190 | if (!strcmp(device, "all")) { |
da31d594 | 1191 | ret = blk_commit_all(); |
6ab4b5ab | 1192 | } else { |
84aa0140 SH |
1193 | BlockDriverState *bs; |
1194 | AioContext *aio_context; | |
1195 | ||
a0e8544c FZ |
1196 | blk = blk_by_name(device); |
1197 | if (!blk) { | |
58513bde | 1198 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 1199 | return; |
6ab4b5ab | 1200 | } |
5433c24f HR |
1201 | if (!blk_is_available(blk)) { |
1202 | monitor_printf(mon, "Device '%s' has no medium\n", device); | |
1203 | return; | |
1204 | } | |
84aa0140 SH |
1205 | |
1206 | bs = blk_bs(blk); | |
1207 | aio_context = bdrv_get_aio_context(bs); | |
1208 | aio_context_acquire(aio_context); | |
1209 | ||
1210 | ret = bdrv_commit(bs); | |
1211 | ||
1212 | aio_context_release(aio_context); | |
58513bde JC |
1213 | } |
1214 | if (ret < 0) { | |
1215 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
1216 | strerror(-ret)); | |
666daa68 MA |
1217 | } |
1218 | } | |
1219 | ||
10f75907 | 1220 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
6cc2a415 | 1221 | { |
c8a83e85 | 1222 | TransactionActionList list; |
6cc2a415 | 1223 | |
10f75907 | 1224 | list.value = action; |
6cc2a415 | 1225 | list.next = NULL; |
94d16a64 | 1226 | qmp_transaction(&list, false, NULL, errp); |
6cc2a415 PB |
1227 | } |
1228 | ||
0901f67e BC |
1229 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1230 | bool has_node_name, const char *node_name, | |
1231 | const char *snapshot_file, | |
1232 | bool has_snapshot_node_name, | |
1233 | const char *snapshot_node_name, | |
6106e249 | 1234 | bool has_format, const char *format, |
0901f67e | 1235 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1236 | { |
a911e6ae | 1237 | BlockdevSnapshotSync snapshot = { |
0901f67e | 1238 | .has_device = has_device, |
6cc2a415 | 1239 | .device = (char *) device, |
0901f67e BC |
1240 | .has_node_name = has_node_name, |
1241 | .node_name = (char *) node_name, | |
6cc2a415 | 1242 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1243 | .has_snapshot_node_name = has_snapshot_node_name, |
1244 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1245 | .has_format = has_format, |
1246 | .format = (char *) format, | |
1247 | .has_mode = has_mode, | |
1248 | .mode = mode, | |
1249 | }; | |
10f75907 EB |
1250 | TransactionAction action = { |
1251 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, | |
32bafa8f | 1252 | .u.blockdev_snapshot_sync.data = &snapshot, |
10f75907 EB |
1253 | }; |
1254 | blockdev_do_action(&action, errp); | |
f8882568 JS |
1255 | } |
1256 | ||
43de7e2d AG |
1257 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
1258 | Error **errp) | |
1259 | { | |
1260 | BlockdevSnapshot snapshot_data = { | |
1261 | .node = (char *) node, | |
1262 | .overlay = (char *) overlay | |
1263 | }; | |
10f75907 EB |
1264 | TransactionAction action = { |
1265 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, | |
32bafa8f | 1266 | .u.blockdev_snapshot.data = &snapshot_data, |
10f75907 EB |
1267 | }; |
1268 | blockdev_do_action(&action, errp); | |
43de7e2d AG |
1269 | } |
1270 | ||
f323bc9e WX |
1271 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1272 | const char *name, | |
1273 | Error **errp) | |
1274 | { | |
1275 | BlockdevSnapshotInternal snapshot = { | |
1276 | .device = (char *) device, | |
1277 | .name = (char *) name | |
1278 | }; | |
10f75907 EB |
1279 | TransactionAction action = { |
1280 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
32bafa8f | 1281 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
10f75907 EB |
1282 | }; |
1283 | blockdev_do_action(&action, errp); | |
f323bc9e WX |
1284 | } |
1285 | ||
44e3e053 WX |
1286 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1287 | bool has_id, | |
1288 | const char *id, | |
1289 | bool has_name, | |
1290 | const char *name, | |
1291 | Error **errp) | |
1292 | { | |
a0e8544c FZ |
1293 | BlockDriverState *bs; |
1294 | BlockBackend *blk; | |
4ef3982a | 1295 | AioContext *aio_context; |
44e3e053 WX |
1296 | QEMUSnapshotInfo sn; |
1297 | Error *local_err = NULL; | |
1298 | SnapshotInfo *info = NULL; | |
1299 | int ret; | |
1300 | ||
a0e8544c FZ |
1301 | blk = blk_by_name(device); |
1302 | if (!blk) { | |
75158ebb MA |
1303 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1304 | "Device '%s' not found", device); | |
44e3e053 WX |
1305 | return NULL; |
1306 | } | |
5433c24f HR |
1307 | |
1308 | aio_context = blk_get_aio_context(blk); | |
1309 | aio_context_acquire(aio_context); | |
44e3e053 WX |
1310 | |
1311 | if (!has_id) { | |
1312 | id = NULL; | |
1313 | } | |
1314 | ||
1315 | if (!has_name) { | |
1316 | name = NULL; | |
1317 | } | |
1318 | ||
1319 | if (!id && !name) { | |
1320 | error_setg(errp, "Name or id must be provided"); | |
5433c24f | 1321 | goto out_aio_context; |
44e3e053 WX |
1322 | } |
1323 | ||
5433c24f HR |
1324 | if (!blk_is_available(blk)) { |
1325 | error_setg(errp, "Device '%s' has no medium", device); | |
1326 | goto out_aio_context; | |
1327 | } | |
1328 | bs = blk_bs(blk); | |
4ef3982a | 1329 | |
0b928854 SH |
1330 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
1331 | goto out_aio_context; | |
1332 | } | |
1333 | ||
44e3e053 | 1334 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
84d18f06 | 1335 | if (local_err) { |
44e3e053 | 1336 | error_propagate(errp, local_err); |
4ef3982a | 1337 | goto out_aio_context; |
44e3e053 WX |
1338 | } |
1339 | if (!ret) { | |
1340 | error_setg(errp, | |
1341 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1342 | "device '%s'", | |
1343 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
4ef3982a | 1344 | goto out_aio_context; |
44e3e053 WX |
1345 | } |
1346 | ||
1347 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1348 | if (local_err) { |
44e3e053 | 1349 | error_propagate(errp, local_err); |
4ef3982a | 1350 | goto out_aio_context; |
44e3e053 WX |
1351 | } |
1352 | ||
4ef3982a SH |
1353 | aio_context_release(aio_context); |
1354 | ||
5839e53b | 1355 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1356 | info->id = g_strdup(sn.id_str); |
1357 | info->name = g_strdup(sn.name); | |
1358 | info->date_nsec = sn.date_nsec; | |
1359 | info->date_sec = sn.date_sec; | |
1360 | info->vm_state_size = sn.vm_state_size; | |
1361 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1362 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1363 | ||
1364 | return info; | |
4ef3982a SH |
1365 | |
1366 | out_aio_context: | |
1367 | aio_context_release(aio_context); | |
1368 | return NULL; | |
44e3e053 | 1369 | } |
8802d1fd | 1370 | |
341ebc2f JS |
1371 | /** |
1372 | * block_dirty_bitmap_lookup: | |
1373 | * Return a dirty bitmap (if present), after validating | |
1374 | * the node reference and bitmap names. | |
1375 | * | |
1376 | * @node: The name of the BDS node to search for bitmaps | |
1377 | * @name: The name of the bitmap to search for | |
1378 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. | |
1379 | * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL. | |
1380 | * @errp: Output pointer for error information. Can be NULL. | |
1381 | * | |
1382 | * @return: A bitmap object on success, or NULL on failure. | |
1383 | */ | |
1384 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, | |
1385 | const char *name, | |
1386 | BlockDriverState **pbs, | |
1387 | AioContext **paio, | |
1388 | Error **errp) | |
1389 | { | |
1390 | BlockDriverState *bs; | |
1391 | BdrvDirtyBitmap *bitmap; | |
1392 | AioContext *aio_context; | |
1393 | ||
1394 | if (!node) { | |
1395 | error_setg(errp, "Node cannot be NULL"); | |
1396 | return NULL; | |
1397 | } | |
1398 | if (!name) { | |
1399 | error_setg(errp, "Bitmap name cannot be NULL"); | |
1400 | return NULL; | |
1401 | } | |
1402 | bs = bdrv_lookup_bs(node, node, NULL); | |
1403 | if (!bs) { | |
1404 | error_setg(errp, "Node '%s' not found", node); | |
1405 | return NULL; | |
1406 | } | |
1407 | ||
1408 | aio_context = bdrv_get_aio_context(bs); | |
1409 | aio_context_acquire(aio_context); | |
1410 | ||
1411 | bitmap = bdrv_find_dirty_bitmap(bs, name); | |
1412 | if (!bitmap) { | |
1413 | error_setg(errp, "Dirty bitmap '%s' not found", name); | |
1414 | goto fail; | |
1415 | } | |
1416 | ||
1417 | if (pbs) { | |
1418 | *pbs = bs; | |
1419 | } | |
1420 | if (paio) { | |
1421 | *paio = aio_context; | |
1422 | } else { | |
1423 | aio_context_release(aio_context); | |
1424 | } | |
1425 | ||
1426 | return bitmap; | |
1427 | ||
1428 | fail: | |
1429 | aio_context_release(aio_context); | |
1430 | return NULL; | |
1431 | } | |
1432 | ||
b756b9ce | 1433 | /* New and old BlockDriverState structs for atomic group operations */ |
ba0c86a3 | 1434 | |
50f43f0f | 1435 | typedef struct BlkActionState BlkActionState; |
ba0c86a3 | 1436 | |
50f43f0f JS |
1437 | /** |
1438 | * BlkActionOps: | |
1439 | * Table of operations that define an Action. | |
1440 | * | |
1441 | * @instance_size: Size of state struct, in bytes. | |
1442 | * @prepare: Prepare the work, must NOT be NULL. | |
1443 | * @commit: Commit the changes, can be NULL. | |
1444 | * @abort: Abort the changes on fail, can be NULL. | |
1445 | * @clean: Clean up resources after all transaction actions have called | |
1446 | * commit() or abort(). Can be NULL. | |
1447 | * | |
1448 | * Only prepare() may fail. In a single transaction, only one of commit() or | |
1449 | * abort() will be called. clean() will always be called if it is present. | |
1450 | */ | |
1451 | typedef struct BlkActionOps { | |
ba0c86a3 | 1452 | size_t instance_size; |
50f43f0f JS |
1453 | void (*prepare)(BlkActionState *common, Error **errp); |
1454 | void (*commit)(BlkActionState *common); | |
1455 | void (*abort)(BlkActionState *common); | |
1456 | void (*clean)(BlkActionState *common); | |
1457 | } BlkActionOps; | |
ba0c86a3 | 1458 | |
50f43f0f JS |
1459 | /** |
1460 | * BlkActionState: | |
1461 | * Describes one Action's state within a Transaction. | |
1462 | * | |
1463 | * @action: QAPI-defined enum identifying which Action to perform. | |
1464 | * @ops: Table of ActionOps this Action can perform. | |
94d16a64 | 1465 | * @block_job_txn: Transaction which this action belongs to. |
50f43f0f JS |
1466 | * @entry: List membership for all Actions in this Transaction. |
1467 | * | |
1468 | * This structure must be arranged as first member in a subclassed type, | |
1469 | * assuming that the compiler will also arrange it to the same offsets as the | |
1470 | * base class. | |
ba0c86a3 | 1471 | */ |
50f43f0f | 1472 | struct BlkActionState { |
c8a83e85 | 1473 | TransactionAction *action; |
50f43f0f | 1474 | const BlkActionOps *ops; |
94d16a64 JS |
1475 | BlockJobTxn *block_job_txn; |
1476 | TransactionProperties *txn_props; | |
50f43f0f | 1477 | QSIMPLEQ_ENTRY(BlkActionState) entry; |
ba0c86a3 WX |
1478 | }; |
1479 | ||
bbe86010 WX |
1480 | /* internal snapshot private data */ |
1481 | typedef struct InternalSnapshotState { | |
50f43f0f | 1482 | BlkActionState common; |
bbe86010 | 1483 | BlockDriverState *bs; |
5d6e96ef | 1484 | AioContext *aio_context; |
bbe86010 | 1485 | QEMUSnapshotInfo sn; |
507306cc | 1486 | bool created; |
bbe86010 WX |
1487 | } InternalSnapshotState; |
1488 | ||
94d16a64 JS |
1489 | |
1490 | static int action_check_completion_mode(BlkActionState *s, Error **errp) | |
1491 | { | |
1492 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
1493 | error_setg(errp, | |
1494 | "Action '%s' does not support Transaction property " | |
1495 | "completion-mode = %s", | |
1496 | TransactionActionKind_lookup[s->action->type], | |
1497 | ActionCompletionMode_lookup[s->txn_props->completion_mode]); | |
1498 | return -1; | |
1499 | } | |
1500 | return 0; | |
1501 | } | |
1502 | ||
50f43f0f | 1503 | static void internal_snapshot_prepare(BlkActionState *common, |
bbe86010 WX |
1504 | Error **errp) |
1505 | { | |
f70edf99 | 1506 | Error *local_err = NULL; |
bbe86010 WX |
1507 | const char *device; |
1508 | const char *name; | |
a0e8544c | 1509 | BlockBackend *blk; |
bbe86010 WX |
1510 | BlockDriverState *bs; |
1511 | QEMUSnapshotInfo old_sn, *sn; | |
1512 | bool ret; | |
1513 | qemu_timeval tv; | |
1514 | BlockdevSnapshotInternal *internal; | |
1515 | InternalSnapshotState *state; | |
1516 | int ret1; | |
1517 | ||
6a8f9661 | 1518 | g_assert(common->action->type == |
bbe86010 | 1519 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
32bafa8f | 1520 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
bbe86010 WX |
1521 | state = DO_UPCAST(InternalSnapshotState, common, common); |
1522 | ||
1523 | /* 1. parse input */ | |
1524 | device = internal->device; | |
1525 | name = internal->name; | |
1526 | ||
1527 | /* 2. check for validation */ | |
94d16a64 JS |
1528 | if (action_check_completion_mode(common, errp) < 0) { |
1529 | return; | |
1530 | } | |
1531 | ||
a0e8544c FZ |
1532 | blk = blk_by_name(device); |
1533 | if (!blk) { | |
75158ebb MA |
1534 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1535 | "Device '%s' not found", device); | |
bbe86010 WX |
1536 | return; |
1537 | } | |
1538 | ||
5d6e96ef | 1539 | /* AioContext is released in .clean() */ |
5433c24f | 1540 | state->aio_context = blk_get_aio_context(blk); |
5d6e96ef SH |
1541 | aio_context_acquire(state->aio_context); |
1542 | ||
5433c24f | 1543 | if (!blk_is_available(blk)) { |
c6bd8c70 | 1544 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
bbe86010 WX |
1545 | return; |
1546 | } | |
5433c24f | 1547 | bs = blk_bs(blk); |
bbe86010 | 1548 | |
507306cc FZ |
1549 | state->bs = bs; |
1550 | bdrv_drained_begin(bs); | |
1551 | ||
3dc7ca3c SH |
1552 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
1553 | return; | |
1554 | } | |
1555 | ||
bbe86010 | 1556 | if (bdrv_is_read_only(bs)) { |
81e5f78a | 1557 | error_setg(errp, "Device '%s' is read only", device); |
bbe86010 WX |
1558 | return; |
1559 | } | |
1560 | ||
1561 | if (!bdrv_can_snapshot(bs)) { | |
81e5f78a AG |
1562 | error_setg(errp, "Block format '%s' used by device '%s' " |
1563 | "does not support internal snapshots", | |
1564 | bs->drv->format_name, device); | |
bbe86010 WX |
1565 | return; |
1566 | } | |
1567 | ||
1568 | if (!strlen(name)) { | |
1569 | error_setg(errp, "Name is empty"); | |
1570 | return; | |
1571 | } | |
1572 | ||
1573 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1574 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1575 | &local_err); | |
1576 | if (local_err) { | |
1577 | error_propagate(errp, local_err); | |
bbe86010 WX |
1578 | return; |
1579 | } else if (ret) { | |
1580 | error_setg(errp, | |
1581 | "Snapshot with name '%s' already exists on device '%s'", | |
1582 | name, device); | |
1583 | return; | |
1584 | } | |
1585 | ||
1586 | /* 3. take the snapshot */ | |
1587 | sn = &state->sn; | |
1588 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1589 | qemu_gettimeofday(&tv); | |
1590 | sn->date_sec = tv.tv_sec; | |
1591 | sn->date_nsec = tv.tv_usec * 1000; | |
1592 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1593 | ||
1594 | ret1 = bdrv_snapshot_create(bs, sn); | |
1595 | if (ret1 < 0) { | |
1596 | error_setg_errno(errp, -ret1, | |
1597 | "Failed to create snapshot '%s' on device '%s'", | |
1598 | name, device); | |
1599 | return; | |
1600 | } | |
1601 | ||
1602 | /* 4. succeed, mark a snapshot is created */ | |
507306cc | 1603 | state->created = true; |
bbe86010 WX |
1604 | } |
1605 | ||
50f43f0f | 1606 | static void internal_snapshot_abort(BlkActionState *common) |
bbe86010 WX |
1607 | { |
1608 | InternalSnapshotState *state = | |
1609 | DO_UPCAST(InternalSnapshotState, common, common); | |
1610 | BlockDriverState *bs = state->bs; | |
1611 | QEMUSnapshotInfo *sn = &state->sn; | |
1612 | Error *local_error = NULL; | |
1613 | ||
507306cc | 1614 | if (!state->created) { |
bbe86010 WX |
1615 | return; |
1616 | } | |
1617 | ||
1618 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
c29b77f9 MA |
1619 | error_reportf_err(local_error, |
1620 | "Failed to delete snapshot with id '%s' and " | |
1621 | "name '%s' on device '%s' in abort: ", | |
1622 | sn->id_str, sn->name, | |
1623 | bdrv_get_device_name(bs)); | |
bbe86010 WX |
1624 | } |
1625 | } | |
1626 | ||
50f43f0f | 1627 | static void internal_snapshot_clean(BlkActionState *common) |
5d6e96ef SH |
1628 | { |
1629 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, | |
1630 | common, common); | |
1631 | ||
1632 | if (state->aio_context) { | |
507306cc FZ |
1633 | if (state->bs) { |
1634 | bdrv_drained_end(state->bs); | |
1635 | } | |
5d6e96ef SH |
1636 | aio_context_release(state->aio_context); |
1637 | } | |
1638 | } | |
1639 | ||
ba0c86a3 | 1640 | /* external snapshot private data */ |
ba5d6ab6 | 1641 | typedef struct ExternalSnapshotState { |
50f43f0f | 1642 | BlkActionState common; |
8802d1fd JC |
1643 | BlockDriverState *old_bs; |
1644 | BlockDriverState *new_bs; | |
5d6e96ef | 1645 | AioContext *aio_context; |
ba5d6ab6 | 1646 | } ExternalSnapshotState; |
8802d1fd | 1647 | |
50f43f0f | 1648 | static void external_snapshot_prepare(BlkActionState *common, |
9b9877ee WX |
1649 | Error **errp) |
1650 | { | |
43de7e2d AG |
1651 | int flags = 0, ret; |
1652 | QDict *options = NULL; | |
9b9877ee | 1653 | Error *local_err = NULL; |
43de7e2d | 1654 | /* Device and node name of the image to generate the snapshot from */ |
e2a31e87 | 1655 | const char *device; |
0901f67e | 1656 | const char *node_name; |
43de7e2d AG |
1657 | /* Reference to the new image (for 'blockdev-snapshot') */ |
1658 | const char *snapshot_ref; | |
1659 | /* File name of the new image (for 'blockdev-snapshot-sync') */ | |
e2a31e87 | 1660 | const char *new_image_file; |
ba5d6ab6 SH |
1661 | ExternalSnapshotState *state = |
1662 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1663 | TransactionAction *action = common->action; |
9b9877ee | 1664 | |
43de7e2d AG |
1665 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
1666 | * purpose but a different set of parameters */ | |
1667 | switch (action->type) { | |
1668 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: | |
1669 | { | |
32bafa8f | 1670 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
43de7e2d AG |
1671 | device = s->node; |
1672 | node_name = s->node; | |
1673 | new_image_file = NULL; | |
1674 | snapshot_ref = s->overlay; | |
1675 | } | |
1676 | break; | |
1677 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: | |
1678 | { | |
32bafa8f | 1679 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
43de7e2d AG |
1680 | device = s->has_device ? s->device : NULL; |
1681 | node_name = s->has_node_name ? s->node_name : NULL; | |
1682 | new_image_file = s->snapshot_file; | |
1683 | snapshot_ref = NULL; | |
1684 | } | |
1685 | break; | |
1686 | default: | |
1687 | g_assert_not_reached(); | |
e2a31e87 WX |
1688 | } |
1689 | ||
1690 | /* start processing */ | |
94d16a64 JS |
1691 | if (action_check_completion_mode(common, errp) < 0) { |
1692 | return; | |
1693 | } | |
1694 | ||
43de7e2d AG |
1695 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
1696 | if (!state->old_bs) { | |
9b9877ee WX |
1697 | return; |
1698 | } | |
1699 | ||
5d6e96ef SH |
1700 | /* Acquire AioContext now so any threads operating on old_bs stop */ |
1701 | state->aio_context = bdrv_get_aio_context(state->old_bs); | |
1702 | aio_context_acquire(state->aio_context); | |
da763e83 | 1703 | bdrv_drained_begin(state->old_bs); |
5d6e96ef | 1704 | |
ba5d6ab6 | 1705 | if (!bdrv_is_inserted(state->old_bs)) { |
c6bd8c70 | 1706 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
9b9877ee WX |
1707 | return; |
1708 | } | |
1709 | ||
3718d8ab FZ |
1710 | if (bdrv_op_is_blocked(state->old_bs, |
1711 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
9b9877ee WX |
1712 | return; |
1713 | } | |
1714 | ||
ba5d6ab6 SH |
1715 | if (!bdrv_is_read_only(state->old_bs)) { |
1716 | if (bdrv_flush(state->old_bs)) { | |
c6bd8c70 | 1717 | error_setg(errp, QERR_IO_ERROR); |
9b9877ee WX |
1718 | return; |
1719 | } | |
1720 | } | |
1721 | ||
212a5a8f | 1722 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
c6bd8c70 | 1723 | error_setg(errp, QERR_FEATURE_DISABLED, "snapshot"); |
f6186f49 BC |
1724 | return; |
1725 | } | |
1726 | ||
43de7e2d | 1727 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
32bafa8f | 1728 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
43de7e2d AG |
1729 | const char *format = s->has_format ? s->format : "qcow2"; |
1730 | enum NewImageMode mode; | |
1731 | const char *snapshot_node_name = | |
1732 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; | |
9b9877ee | 1733 | |
43de7e2d AG |
1734 | if (node_name && !snapshot_node_name) { |
1735 | error_setg(errp, "New snapshot node name missing"); | |
9b9877ee WX |
1736 | return; |
1737 | } | |
9b9877ee | 1738 | |
43de7e2d AG |
1739 | if (snapshot_node_name && |
1740 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { | |
1741 | error_setg(errp, "New snapshot node name already in use"); | |
1742 | return; | |
1743 | } | |
1744 | ||
1745 | flags = state->old_bs->open_flags; | |
4c844983 | 1746 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | BDRV_O_COPY_ON_READ); |
43de7e2d AG |
1747 | |
1748 | /* create new image w/backing file */ | |
1749 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1750 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
f86b8b58 KW |
1751 | int64_t size = bdrv_getlength(state->old_bs); |
1752 | if (size < 0) { | |
1753 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1754 | return; | |
1755 | } | |
43de7e2d AG |
1756 | bdrv_img_create(new_image_file, format, |
1757 | state->old_bs->filename, | |
1758 | state->old_bs->drv->format_name, | |
f86b8b58 | 1759 | NULL, size, flags, &local_err, false); |
43de7e2d AG |
1760 | if (local_err) { |
1761 | error_propagate(errp, local_err); | |
1762 | return; | |
1763 | } | |
1764 | } | |
1765 | ||
1766 | options = qdict_new(); | |
1767 | if (s->has_snapshot_node_name) { | |
1768 | qdict_put(options, "node-name", | |
1769 | qstring_from_str(snapshot_node_name)); | |
1770 | } | |
1771 | qdict_put(options, "driver", qstring_from_str(format)); | |
1772 | ||
1773 | flags |= BDRV_O_NO_BACKING; | |
0901f67e BC |
1774 | } |
1775 | ||
73ac451f KW |
1776 | /* There is no BB attached during bdrv_open(), so we can't set a |
1777 | * writethrough mode. bdrv_append() will swap the WCE setting so that the | |
1778 | * backing file becomes unconditionally writeback (which is what backing | |
1779 | * files should always be) and the new overlay gets the original setting. */ | |
1780 | flags |= BDRV_O_CACHE_WB; | |
1781 | ||
f67503e5 | 1782 | assert(state->new_bs == NULL); |
43de7e2d AG |
1783 | ret = bdrv_open(&state->new_bs, new_image_file, snapshot_ref, options, |
1784 | flags, errp); | |
f67503e5 | 1785 | /* We will manually add the backing_hd field to the bs later */ |
9b9877ee | 1786 | if (ret != 0) { |
43de7e2d AG |
1787 | return; |
1788 | } | |
1789 | ||
1790 | if (state->new_bs->blk != NULL) { | |
1791 | error_setg(errp, "The snapshot is already in use by %s", | |
1792 | blk_name(state->new_bs->blk)); | |
1793 | return; | |
1794 | } | |
1795 | ||
1796 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, | |
1797 | errp)) { | |
1798 | return; | |
1799 | } | |
1800 | ||
1801 | if (state->new_bs->backing != NULL) { | |
1802 | error_setg(errp, "The snapshot already has a backing image"); | |
08b24cfe AG |
1803 | return; |
1804 | } | |
1805 | ||
1806 | if (!state->new_bs->drv->supports_backing) { | |
1807 | error_setg(errp, "The snapshot does not support backing images"); | |
9b9877ee WX |
1808 | } |
1809 | } | |
1810 | ||
50f43f0f | 1811 | static void external_snapshot_commit(BlkActionState *common) |
3b0047e8 | 1812 | { |
ba5d6ab6 SH |
1813 | ExternalSnapshotState *state = |
1814 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1815 | |
5d6e96ef SH |
1816 | bdrv_set_aio_context(state->new_bs, state->aio_context); |
1817 | ||
ba5d6ab6 SH |
1818 | /* This removes our old bs and adds the new bs */ |
1819 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1820 | /* We don't need (or want) to use the transactional |
1821 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1822 | * don't want to abort all of them if one of them fails the reopen */ | |
4c844983 KW |
1823 | if (!state->old_bs->copy_on_read) { |
1824 | bdrv_reopen(state->old_bs, state->old_bs->open_flags & ~BDRV_O_RDWR, | |
1825 | NULL); | |
1826 | } | |
3b0047e8 WX |
1827 | } |
1828 | ||
50f43f0f | 1829 | static void external_snapshot_abort(BlkActionState *common) |
96b86bf7 | 1830 | { |
ba5d6ab6 SH |
1831 | ExternalSnapshotState *state = |
1832 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1833 | if (state->new_bs) { | |
4f6fd349 | 1834 | bdrv_unref(state->new_bs); |
96b86bf7 | 1835 | } |
da763e83 FZ |
1836 | } |
1837 | ||
50f43f0f | 1838 | static void external_snapshot_clean(BlkActionState *common) |
da763e83 FZ |
1839 | { |
1840 | ExternalSnapshotState *state = | |
1841 | DO_UPCAST(ExternalSnapshotState, common, common); | |
5d6e96ef | 1842 | if (state->aio_context) { |
da763e83 | 1843 | bdrv_drained_end(state->old_bs); |
5d6e96ef SH |
1844 | aio_context_release(state->aio_context); |
1845 | } | |
96b86bf7 WX |
1846 | } |
1847 | ||
3037f364 | 1848 | typedef struct DriveBackupState { |
50f43f0f | 1849 | BlkActionState common; |
3037f364 | 1850 | BlockDriverState *bs; |
5d6e96ef | 1851 | AioContext *aio_context; |
3037f364 SH |
1852 | BlockJob *job; |
1853 | } DriveBackupState; | |
1854 | ||
78f51fde JS |
1855 | static void do_drive_backup(const char *device, const char *target, |
1856 | bool has_format, const char *format, | |
1857 | enum MirrorSyncMode sync, | |
1858 | bool has_mode, enum NewImageMode mode, | |
1859 | bool has_speed, int64_t speed, | |
1860 | bool has_bitmap, const char *bitmap, | |
1861 | bool has_on_source_error, | |
1862 | BlockdevOnError on_source_error, | |
1863 | bool has_on_target_error, | |
1864 | BlockdevOnError on_target_error, | |
1865 | BlockJobTxn *txn, Error **errp); | |
1866 | ||
50f43f0f | 1867 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
3037f364 SH |
1868 | { |
1869 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
a0e8544c | 1870 | BlockBackend *blk; |
3037f364 SH |
1871 | DriveBackup *backup; |
1872 | Error *local_err = NULL; | |
1873 | ||
6a8f9661 | 1874 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
32bafa8f | 1875 | backup = common->action->u.drive_backup.data; |
3037f364 | 1876 | |
a0e8544c FZ |
1877 | blk = blk_by_name(backup->device); |
1878 | if (!blk) { | |
75158ebb MA |
1879 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
1880 | "Device '%s' not found", backup->device); | |
5d6e96ef SH |
1881 | return; |
1882 | } | |
1883 | ||
1fdd4b7b FZ |
1884 | if (!blk_is_available(blk)) { |
1885 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); | |
1886 | return; | |
1887 | } | |
1888 | ||
5d6e96ef | 1889 | /* AioContext is released in .clean() */ |
5433c24f | 1890 | state->aio_context = blk_get_aio_context(blk); |
5d6e96ef | 1891 | aio_context_acquire(state->aio_context); |
1fdd4b7b FZ |
1892 | bdrv_drained_begin(blk_bs(blk)); |
1893 | state->bs = blk_bs(blk); | |
5d6e96ef | 1894 | |
78f51fde JS |
1895 | do_drive_backup(backup->device, backup->target, |
1896 | backup->has_format, backup->format, | |
1897 | backup->sync, | |
1898 | backup->has_mode, backup->mode, | |
1899 | backup->has_speed, backup->speed, | |
1900 | backup->has_bitmap, backup->bitmap, | |
1901 | backup->has_on_source_error, backup->on_source_error, | |
1902 | backup->has_on_target_error, backup->on_target_error, | |
94d16a64 | 1903 | common->block_job_txn, &local_err); |
84d18f06 | 1904 | if (local_err) { |
3037f364 | 1905 | error_propagate(errp, local_err); |
3037f364 SH |
1906 | return; |
1907 | } | |
1908 | ||
3037f364 SH |
1909 | state->job = state->bs->job; |
1910 | } | |
1911 | ||
50f43f0f | 1912 | static void drive_backup_abort(BlkActionState *common) |
3037f364 SH |
1913 | { |
1914 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1915 | BlockDriverState *bs = state->bs; | |
1916 | ||
1917 | /* Only cancel if it's the job we started */ | |
1918 | if (bs && bs->job && bs->job == state->job) { | |
1919 | block_job_cancel_sync(bs->job); | |
1920 | } | |
1921 | } | |
1922 | ||
50f43f0f | 1923 | static void drive_backup_clean(BlkActionState *common) |
5d6e96ef SH |
1924 | { |
1925 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1926 | ||
1927 | if (state->aio_context) { | |
1fdd4b7b | 1928 | bdrv_drained_end(state->bs); |
5d6e96ef SH |
1929 | aio_context_release(state->aio_context); |
1930 | } | |
1931 | } | |
1932 | ||
bd8baecd | 1933 | typedef struct BlockdevBackupState { |
50f43f0f | 1934 | BlkActionState common; |
bd8baecd FZ |
1935 | BlockDriverState *bs; |
1936 | BlockJob *job; | |
1937 | AioContext *aio_context; | |
1938 | } BlockdevBackupState; | |
1939 | ||
78f51fde JS |
1940 | static void do_blockdev_backup(const char *device, const char *target, |
1941 | enum MirrorSyncMode sync, | |
1942 | bool has_speed, int64_t speed, | |
1943 | bool has_on_source_error, | |
1944 | BlockdevOnError on_source_error, | |
1945 | bool has_on_target_error, | |
1946 | BlockdevOnError on_target_error, | |
1947 | BlockJobTxn *txn, Error **errp); | |
1948 | ||
50f43f0f | 1949 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
bd8baecd FZ |
1950 | { |
1951 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1952 | BlockdevBackup *backup; | |
5433c24f | 1953 | BlockBackend *blk, *target; |
bd8baecd FZ |
1954 | Error *local_err = NULL; |
1955 | ||
6a8f9661 | 1956 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
32bafa8f | 1957 | backup = common->action->u.blockdev_backup.data; |
bd8baecd | 1958 | |
a0e8544c FZ |
1959 | blk = blk_by_name(backup->device); |
1960 | if (!blk) { | |
5b347c54 | 1961 | error_setg(errp, "Device '%s' not found", backup->device); |
bd8baecd FZ |
1962 | return; |
1963 | } | |
1964 | ||
ff52bf36 FZ |
1965 | if (!blk_is_available(blk)) { |
1966 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, backup->device); | |
1967 | return; | |
1968 | } | |
1969 | ||
5433c24f HR |
1970 | target = blk_by_name(backup->target); |
1971 | if (!target) { | |
5b347c54 | 1972 | error_setg(errp, "Device '%s' not found", backup->target); |
bd8baecd FZ |
1973 | return; |
1974 | } | |
1975 | ||
1976 | /* AioContext is released in .clean() */ | |
5433c24f HR |
1977 | state->aio_context = blk_get_aio_context(blk); |
1978 | if (state->aio_context != blk_get_aio_context(target)) { | |
bd8baecd FZ |
1979 | state->aio_context = NULL; |
1980 | error_setg(errp, "Backup between two IO threads is not implemented"); | |
1981 | return; | |
1982 | } | |
1983 | aio_context_acquire(state->aio_context); | |
ff52bf36 FZ |
1984 | state->bs = blk_bs(blk); |
1985 | bdrv_drained_begin(state->bs); | |
bd8baecd | 1986 | |
78f51fde JS |
1987 | do_blockdev_backup(backup->device, backup->target, |
1988 | backup->sync, | |
1989 | backup->has_speed, backup->speed, | |
1990 | backup->has_on_source_error, backup->on_source_error, | |
1991 | backup->has_on_target_error, backup->on_target_error, | |
94d16a64 | 1992 | common->block_job_txn, &local_err); |
bd8baecd FZ |
1993 | if (local_err) { |
1994 | error_propagate(errp, local_err); | |
1995 | return; | |
1996 | } | |
1997 | ||
bd8baecd FZ |
1998 | state->job = state->bs->job; |
1999 | } | |
2000 | ||
50f43f0f | 2001 | static void blockdev_backup_abort(BlkActionState *common) |
bd8baecd FZ |
2002 | { |
2003 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
2004 | BlockDriverState *bs = state->bs; | |
2005 | ||
2006 | /* Only cancel if it's the job we started */ | |
2007 | if (bs && bs->job && bs->job == state->job) { | |
2008 | block_job_cancel_sync(bs->job); | |
2009 | } | |
2010 | } | |
2011 | ||
50f43f0f | 2012 | static void blockdev_backup_clean(BlkActionState *common) |
bd8baecd FZ |
2013 | { |
2014 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
2015 | ||
2016 | if (state->aio_context) { | |
ff52bf36 | 2017 | bdrv_drained_end(state->bs); |
bd8baecd FZ |
2018 | aio_context_release(state->aio_context); |
2019 | } | |
2020 | } | |
2021 | ||
df9a681d | 2022 | typedef struct BlockDirtyBitmapState { |
50f43f0f | 2023 | BlkActionState common; |
df9a681d FZ |
2024 | BdrvDirtyBitmap *bitmap; |
2025 | BlockDriverState *bs; | |
2026 | AioContext *aio_context; | |
2027 | HBitmap *backup; | |
2028 | bool prepared; | |
2029 | } BlockDirtyBitmapState; | |
2030 | ||
50f43f0f | 2031 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
df9a681d FZ |
2032 | Error **errp) |
2033 | { | |
2034 | Error *local_err = NULL; | |
2035 | BlockDirtyBitmapAdd *action; | |
2036 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2037 | common, common); | |
2038 | ||
94d16a64 JS |
2039 | if (action_check_completion_mode(common, errp) < 0) { |
2040 | return; | |
2041 | } | |
2042 | ||
32bafa8f | 2043 | action = common->action->u.block_dirty_bitmap_add.data; |
df9a681d FZ |
2044 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
2045 | qmp_block_dirty_bitmap_add(action->node, action->name, | |
2046 | action->has_granularity, action->granularity, | |
2047 | &local_err); | |
2048 | ||
2049 | if (!local_err) { | |
2050 | state->prepared = true; | |
2051 | } else { | |
2052 | error_propagate(errp, local_err); | |
2053 | } | |
2054 | } | |
2055 | ||
50f43f0f | 2056 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
df9a681d FZ |
2057 | { |
2058 | BlockDirtyBitmapAdd *action; | |
2059 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2060 | common, common); | |
2061 | ||
32bafa8f | 2062 | action = common->action->u.block_dirty_bitmap_add.data; |
df9a681d FZ |
2063 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
2064 | * then the node reference and bitmap name must have been valid. | |
2065 | */ | |
2066 | if (state->prepared) { | |
2067 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); | |
2068 | } | |
2069 | } | |
2070 | ||
50f43f0f | 2071 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
df9a681d FZ |
2072 | Error **errp) |
2073 | { | |
2074 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2075 | common, common); | |
2076 | BlockDirtyBitmap *action; | |
2077 | ||
94d16a64 JS |
2078 | if (action_check_completion_mode(common, errp) < 0) { |
2079 | return; | |
2080 | } | |
2081 | ||
32bafa8f | 2082 | action = common->action->u.block_dirty_bitmap_clear.data; |
df9a681d FZ |
2083 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
2084 | action->name, | |
2085 | &state->bs, | |
2086 | &state->aio_context, | |
2087 | errp); | |
2088 | if (!state->bitmap) { | |
2089 | return; | |
2090 | } | |
2091 | ||
2092 | if (bdrv_dirty_bitmap_frozen(state->bitmap)) { | |
2093 | error_setg(errp, "Cannot modify a frozen bitmap"); | |
2094 | return; | |
2095 | } else if (!bdrv_dirty_bitmap_enabled(state->bitmap)) { | |
2096 | error_setg(errp, "Cannot clear a disabled bitmap"); | |
2097 | return; | |
2098 | } | |
2099 | ||
2100 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); | |
2101 | /* AioContext is released in .clean() */ | |
2102 | } | |
2103 | ||
50f43f0f | 2104 | static void block_dirty_bitmap_clear_abort(BlkActionState *common) |
df9a681d FZ |
2105 | { |
2106 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2107 | common, common); | |
2108 | ||
2109 | bdrv_undo_clear_dirty_bitmap(state->bitmap, state->backup); | |
2110 | } | |
2111 | ||
50f43f0f | 2112 | static void block_dirty_bitmap_clear_commit(BlkActionState *common) |
df9a681d FZ |
2113 | { |
2114 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2115 | common, common); | |
2116 | ||
2117 | hbitmap_free(state->backup); | |
2118 | } | |
2119 | ||
50f43f0f | 2120 | static void block_dirty_bitmap_clear_clean(BlkActionState *common) |
df9a681d FZ |
2121 | { |
2122 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2123 | common, common); | |
2124 | ||
2125 | if (state->aio_context) { | |
2126 | aio_context_release(state->aio_context); | |
2127 | } | |
2128 | } | |
2129 | ||
50f43f0f | 2130 | static void abort_prepare(BlkActionState *common, Error **errp) |
78b18b78 SH |
2131 | { |
2132 | error_setg(errp, "Transaction aborted using Abort action"); | |
2133 | } | |
2134 | ||
50f43f0f | 2135 | static void abort_commit(BlkActionState *common) |
78b18b78 | 2136 | { |
dfc6f865 | 2137 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
2138 | } |
2139 | ||
50f43f0f | 2140 | static const BlkActionOps actions[] = { |
43de7e2d AG |
2141 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
2142 | .instance_size = sizeof(ExternalSnapshotState), | |
2143 | .prepare = external_snapshot_prepare, | |
2144 | .commit = external_snapshot_commit, | |
2145 | .abort = external_snapshot_abort, | |
4ad6f3db | 2146 | .clean = external_snapshot_clean, |
43de7e2d | 2147 | }, |
c8a83e85 | 2148 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 2149 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
2150 | .prepare = external_snapshot_prepare, |
2151 | .commit = external_snapshot_commit, | |
2152 | .abort = external_snapshot_abort, | |
da763e83 | 2153 | .clean = external_snapshot_clean, |
ba0c86a3 | 2154 | }, |
3037f364 SH |
2155 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
2156 | .instance_size = sizeof(DriveBackupState), | |
2157 | .prepare = drive_backup_prepare, | |
2158 | .abort = drive_backup_abort, | |
5d6e96ef | 2159 | .clean = drive_backup_clean, |
3037f364 | 2160 | }, |
bd8baecd FZ |
2161 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
2162 | .instance_size = sizeof(BlockdevBackupState), | |
2163 | .prepare = blockdev_backup_prepare, | |
2164 | .abort = blockdev_backup_abort, | |
2165 | .clean = blockdev_backup_clean, | |
2166 | }, | |
78b18b78 | 2167 | [TRANSACTION_ACTION_KIND_ABORT] = { |
50f43f0f | 2168 | .instance_size = sizeof(BlkActionState), |
78b18b78 SH |
2169 | .prepare = abort_prepare, |
2170 | .commit = abort_commit, | |
2171 | }, | |
bbe86010 WX |
2172 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
2173 | .instance_size = sizeof(InternalSnapshotState), | |
2174 | .prepare = internal_snapshot_prepare, | |
2175 | .abort = internal_snapshot_abort, | |
5d6e96ef | 2176 | .clean = internal_snapshot_clean, |
bbe86010 | 2177 | }, |
df9a681d FZ |
2178 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
2179 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2180 | .prepare = block_dirty_bitmap_add_prepare, | |
2181 | .abort = block_dirty_bitmap_add_abort, | |
2182 | }, | |
2183 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { | |
2184 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2185 | .prepare = block_dirty_bitmap_clear_prepare, | |
2186 | .commit = block_dirty_bitmap_clear_commit, | |
2187 | .abort = block_dirty_bitmap_clear_abort, | |
2188 | .clean = block_dirty_bitmap_clear_clean, | |
2189 | } | |
ba0c86a3 WX |
2190 | }; |
2191 | ||
94d16a64 JS |
2192 | /** |
2193 | * Allocate a TransactionProperties structure if necessary, and fill | |
2194 | * that structure with desired defaults if they are unset. | |
2195 | */ | |
2196 | static TransactionProperties *get_transaction_properties( | |
2197 | TransactionProperties *props) | |
2198 | { | |
2199 | if (!props) { | |
2200 | props = g_new0(TransactionProperties, 1); | |
2201 | } | |
2202 | ||
2203 | if (!props->has_completion_mode) { | |
2204 | props->has_completion_mode = true; | |
2205 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; | |
2206 | } | |
2207 | ||
2208 | return props; | |
2209 | } | |
2210 | ||
8802d1fd | 2211 | /* |
b756b9ce SH |
2212 | * 'Atomic' group operations. The operations are performed as a set, and if |
2213 | * any fail then we roll back all operations in the group. | |
8802d1fd | 2214 | */ |
94d16a64 JS |
2215 | void qmp_transaction(TransactionActionList *dev_list, |
2216 | bool has_props, | |
2217 | struct TransactionProperties *props, | |
2218 | Error **errp) | |
8802d1fd | 2219 | { |
c8a83e85 | 2220 | TransactionActionList *dev_entry = dev_list; |
94d16a64 | 2221 | BlockJobTxn *block_job_txn = NULL; |
50f43f0f | 2222 | BlkActionState *state, *next; |
43e17041 | 2223 | Error *local_err = NULL; |
8802d1fd | 2224 | |
50f43f0f | 2225 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states; |
8802d1fd JC |
2226 | QSIMPLEQ_INIT(&snap_bdrv_states); |
2227 | ||
94d16a64 JS |
2228 | /* Does this transaction get canceled as a group on failure? |
2229 | * If not, we don't really need to make a BlockJobTxn. | |
2230 | */ | |
2231 | props = get_transaction_properties(props); | |
2232 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
2233 | block_job_txn = block_job_txn_new(); | |
2234 | } | |
2235 | ||
b756b9ce | 2236 | /* drain all i/o before any operations */ |
8802d1fd JC |
2237 | bdrv_drain_all(); |
2238 | ||
b756b9ce | 2239 | /* We don't do anything in this loop that commits us to the operations */ |
8802d1fd | 2240 | while (NULL != dev_entry) { |
c8a83e85 | 2241 | TransactionAction *dev_info = NULL; |
50f43f0f | 2242 | const BlkActionOps *ops; |
52e7c241 | 2243 | |
8802d1fd JC |
2244 | dev_info = dev_entry->value; |
2245 | dev_entry = dev_entry->next; | |
2246 | ||
6a8f9661 | 2247 | assert(dev_info->type < ARRAY_SIZE(actions)); |
ba0c86a3 | 2248 | |
6a8f9661 | 2249 | ops = &actions[dev_info->type]; |
aa3fe714 HR |
2250 | assert(ops->instance_size > 0); |
2251 | ||
ba5d6ab6 SH |
2252 | state = g_malloc0(ops->instance_size); |
2253 | state->ops = ops; | |
2254 | state->action = dev_info; | |
94d16a64 JS |
2255 | state->block_job_txn = block_job_txn; |
2256 | state->txn_props = props; | |
ba5d6ab6 | 2257 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
8802d1fd | 2258 | |
ba5d6ab6 | 2259 | state->ops->prepare(state, &local_err); |
84d18f06 | 2260 | if (local_err) { |
ba0c86a3 WX |
2261 | error_propagate(errp, local_err); |
2262 | goto delete_and_fail; | |
8802d1fd | 2263 | } |
8802d1fd JC |
2264 | } |
2265 | ||
ba5d6ab6 | 2266 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
2267 | if (state->ops->commit) { |
2268 | state->ops->commit(state); | |
2269 | } | |
8802d1fd JC |
2270 | } |
2271 | ||
2272 | /* success */ | |
2273 | goto exit; | |
2274 | ||
2275 | delete_and_fail: | |
b756b9ce | 2276 | /* failure, and it is all-or-none; roll back all operations */ |
ba5d6ab6 SH |
2277 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
2278 | if (state->ops->abort) { | |
2279 | state->ops->abort(state); | |
ba0c86a3 | 2280 | } |
8802d1fd JC |
2281 | } |
2282 | exit: | |
ba5d6ab6 SH |
2283 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
2284 | if (state->ops->clean) { | |
2285 | state->ops->clean(state); | |
ba0c86a3 | 2286 | } |
ba5d6ab6 | 2287 | g_free(state); |
8802d1fd | 2288 | } |
94d16a64 JS |
2289 | if (!has_props) { |
2290 | qapi_free_TransactionProperties(props); | |
2291 | } | |
2292 | block_job_txn_unref(block_job_txn); | |
8802d1fd JC |
2293 | } |
2294 | ||
c245b6a3 | 2295 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 | 2296 | { |
38f54bd1 | 2297 | Error *local_err = NULL; |
666daa68 | 2298 | |
38f54bd1 HR |
2299 | qmp_blockdev_open_tray(device, has_force, force, &local_err); |
2300 | if (local_err) { | |
2301 | error_propagate(errp, local_err); | |
c245b6a3 | 2302 | return; |
92d48558 LC |
2303 | } |
2304 | ||
6e0abc25 | 2305 | qmp_x_blockdev_remove_medium(device, errp); |
666daa68 MA |
2306 | } |
2307 | ||
12d3ba82 BC |
2308 | void qmp_block_passwd(bool has_device, const char *device, |
2309 | bool has_node_name, const char *node_name, | |
2310 | const char *password, Error **errp) | |
666daa68 | 2311 | { |
12d3ba82 | 2312 | Error *local_err = NULL; |
666daa68 | 2313 | BlockDriverState *bs; |
e3442099 | 2314 | AioContext *aio_context; |
666daa68 | 2315 | |
12d3ba82 BC |
2316 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
2317 | has_node_name ? node_name : NULL, | |
2318 | &local_err); | |
84d18f06 | 2319 | if (local_err) { |
12d3ba82 | 2320 | error_propagate(errp, local_err); |
a4dea8a9 | 2321 | return; |
666daa68 MA |
2322 | } |
2323 | ||
e3442099 SH |
2324 | aio_context = bdrv_get_aio_context(bs); |
2325 | aio_context_acquire(aio_context); | |
2326 | ||
4d2855a3 | 2327 | bdrv_add_key(bs, password, errp); |
e3442099 | 2328 | |
e3442099 | 2329 | aio_context_release(aio_context); |
666daa68 MA |
2330 | } |
2331 | ||
7d8a9f71 HR |
2332 | void qmp_blockdev_open_tray(const char *device, bool has_force, bool force, |
2333 | Error **errp) | |
2334 | { | |
2335 | BlockBackend *blk; | |
2336 | bool locked; | |
2337 | ||
2338 | if (!has_force) { | |
2339 | force = false; | |
2340 | } | |
2341 | ||
2342 | blk = blk_by_name(device); | |
2343 | if (!blk) { | |
2344 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2345 | "Device '%s' not found", device); | |
2346 | return; | |
2347 | } | |
2348 | ||
2349 | if (!blk_dev_has_removable_media(blk)) { | |
2350 | error_setg(errp, "Device '%s' is not removable", device); | |
2351 | return; | |
2352 | } | |
2353 | ||
12c7ec87 HR |
2354 | if (!blk_dev_has_tray(blk)) { |
2355 | /* Ignore this command on tray-less devices */ | |
2356 | return; | |
2357 | } | |
2358 | ||
7d8a9f71 HR |
2359 | if (blk_dev_is_tray_open(blk)) { |
2360 | return; | |
2361 | } | |
2362 | ||
2363 | locked = blk_dev_is_medium_locked(blk); | |
2364 | if (locked) { | |
2365 | blk_dev_eject_request(blk, force); | |
2366 | } | |
2367 | ||
2368 | if (!locked || force) { | |
2369 | blk_dev_change_media_cb(blk, false); | |
2370 | } | |
2371 | } | |
2372 | ||
abaaf59d HR |
2373 | void qmp_blockdev_close_tray(const char *device, Error **errp) |
2374 | { | |
2375 | BlockBackend *blk; | |
2376 | ||
2377 | blk = blk_by_name(device); | |
2378 | if (!blk) { | |
2379 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2380 | "Device '%s' not found", device); | |
2381 | return; | |
2382 | } | |
2383 | ||
2384 | if (!blk_dev_has_removable_media(blk)) { | |
2385 | error_setg(errp, "Device '%s' is not removable", device); | |
2386 | return; | |
2387 | } | |
2388 | ||
12c7ec87 HR |
2389 | if (!blk_dev_has_tray(blk)) { |
2390 | /* Ignore this command on tray-less devices */ | |
2391 | return; | |
2392 | } | |
2393 | ||
abaaf59d HR |
2394 | if (!blk_dev_is_tray_open(blk)) { |
2395 | return; | |
2396 | } | |
2397 | ||
2398 | blk_dev_change_media_cb(blk, true); | |
2399 | } | |
2400 | ||
6e0abc25 | 2401 | void qmp_x_blockdev_remove_medium(const char *device, Error **errp) |
2814f672 HR |
2402 | { |
2403 | BlockBackend *blk; | |
2404 | BlockDriverState *bs; | |
2405 | AioContext *aio_context; | |
2406 | bool has_device; | |
2407 | ||
2408 | blk = blk_by_name(device); | |
2409 | if (!blk) { | |
2410 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2411 | "Device '%s' not found", device); | |
2412 | return; | |
2413 | } | |
2414 | ||
2415 | /* For BBs without a device, we can exchange the BDS tree at will */ | |
2416 | has_device = blk_get_attached_dev(blk); | |
2417 | ||
2418 | if (has_device && !blk_dev_has_removable_media(blk)) { | |
2419 | error_setg(errp, "Device '%s' is not removable", device); | |
2420 | return; | |
2421 | } | |
2422 | ||
12c7ec87 | 2423 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
2814f672 HR |
2424 | error_setg(errp, "Tray of device '%s' is not open", device); |
2425 | return; | |
2426 | } | |
2427 | ||
2428 | bs = blk_bs(blk); | |
2429 | if (!bs) { | |
2430 | return; | |
2431 | } | |
2432 | ||
2433 | aio_context = bdrv_get_aio_context(bs); | |
2434 | aio_context_acquire(aio_context); | |
2435 | ||
2436 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { | |
2437 | goto out; | |
2438 | } | |
2439 | ||
2814f672 HR |
2440 | blk_remove_bs(blk); |
2441 | ||
12c7ec87 HR |
2442 | if (!blk_dev_has_tray(blk)) { |
2443 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be | |
2444 | * called at all); therefore, the medium needs to be ejected here. | |
2445 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load | |
2446 | * value passed here (i.e. false). */ | |
2447 | blk_dev_change_media_cb(blk, false); | |
2448 | } | |
2449 | ||
2814f672 HR |
2450 | out: |
2451 | aio_context_release(aio_context); | |
2452 | } | |
2453 | ||
d1299882 HR |
2454 | static void qmp_blockdev_insert_anon_medium(const char *device, |
2455 | BlockDriverState *bs, Error **errp) | |
2456 | { | |
2457 | BlockBackend *blk; | |
2458 | bool has_device; | |
2459 | ||
2460 | blk = blk_by_name(device); | |
2461 | if (!blk) { | |
2462 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2463 | "Device '%s' not found", device); | |
2464 | return; | |
2465 | } | |
2466 | ||
2467 | /* For BBs without a device, we can exchange the BDS tree at will */ | |
2468 | has_device = blk_get_attached_dev(blk); | |
2469 | ||
2470 | if (has_device && !blk_dev_has_removable_media(blk)) { | |
2471 | error_setg(errp, "Device '%s' is not removable", device); | |
2472 | return; | |
2473 | } | |
2474 | ||
12c7ec87 | 2475 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
d1299882 HR |
2476 | error_setg(errp, "Tray of device '%s' is not open", device); |
2477 | return; | |
2478 | } | |
2479 | ||
2480 | if (blk_bs(blk)) { | |
2481 | error_setg(errp, "There already is a medium in device '%s'", device); | |
2482 | return; | |
2483 | } | |
2484 | ||
2485 | blk_insert_bs(blk, bs); | |
2486 | ||
12c7ec87 HR |
2487 | if (!blk_dev_has_tray(blk)) { |
2488 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be | |
2489 | * called at all); therefore, the medium needs to be pushed into the | |
2490 | * slot here. | |
2491 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load | |
2492 | * value passed here (i.e. true). */ | |
2493 | blk_dev_change_media_cb(blk, true); | |
2494 | } | |
d1299882 HR |
2495 | } |
2496 | ||
6e0abc25 HR |
2497 | void qmp_x_blockdev_insert_medium(const char *device, const char *node_name, |
2498 | Error **errp) | |
d1299882 HR |
2499 | { |
2500 | BlockDriverState *bs; | |
2501 | ||
2502 | bs = bdrv_find_node(node_name); | |
2503 | if (!bs) { | |
2504 | error_setg(errp, "Node '%s' not found", node_name); | |
2505 | return; | |
2506 | } | |
2507 | ||
2508 | if (bs->blk) { | |
2509 | error_setg(errp, "Node '%s' is already in use by '%s'", node_name, | |
2510 | blk_name(bs->blk)); | |
2511 | return; | |
2512 | } | |
2513 | ||
2514 | qmp_blockdev_insert_anon_medium(device, bs, errp); | |
2515 | } | |
2516 | ||
24fb4133 HR |
2517 | void qmp_blockdev_change_medium(const char *device, const char *filename, |
2518 | bool has_format, const char *format, | |
39ff43d9 HR |
2519 | bool has_read_only, |
2520 | BlockdevChangeReadOnlyMode read_only, | |
24fb4133 | 2521 | Error **errp) |
de2c6c05 HR |
2522 | { |
2523 | BlockBackend *blk; | |
2524 | BlockDriverState *medium_bs = NULL; | |
2525 | int bdrv_flags, ret; | |
73ac451f | 2526 | bool writethrough; |
de2c6c05 HR |
2527 | QDict *options = NULL; |
2528 | Error *err = NULL; | |
2529 | ||
2530 | blk = blk_by_name(device); | |
2531 | if (!blk) { | |
2532 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
2533 | "Device '%s' not found", device); | |
2534 | goto fail; | |
2535 | } | |
2536 | ||
2537 | if (blk_bs(blk)) { | |
2538 | blk_update_root_state(blk); | |
2539 | } | |
2540 | ||
2541 | bdrv_flags = blk_get_open_flags_from_root_state(blk); | |
156abc2f AM |
2542 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
2543 | BDRV_O_PROTOCOL); | |
de2c6c05 | 2544 | |
73ac451f KW |
2545 | /* Must open the image in writeback mode as long as no BlockBackend is |
2546 | * attached. The right mode can be set as the final step after changing the | |
2547 | * medium. */ | |
2548 | writethrough = !(bdrv_flags & BDRV_O_CACHE_WB); | |
2549 | bdrv_flags |= BDRV_O_CACHE_WB; | |
2550 | ||
39ff43d9 HR |
2551 | if (!has_read_only) { |
2552 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; | |
2553 | } | |
2554 | ||
2555 | switch (read_only) { | |
2556 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: | |
2557 | break; | |
2558 | ||
2559 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: | |
2560 | bdrv_flags &= ~BDRV_O_RDWR; | |
2561 | break; | |
2562 | ||
2563 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: | |
2564 | bdrv_flags |= BDRV_O_RDWR; | |
2565 | break; | |
2566 | ||
2567 | default: | |
2568 | abort(); | |
2569 | } | |
2570 | ||
24fb4133 | 2571 | if (has_format) { |
de2c6c05 HR |
2572 | options = qdict_new(); |
2573 | qdict_put(options, "driver", qstring_from_str(format)); | |
2574 | } | |
2575 | ||
2576 | assert(!medium_bs); | |
2577 | ret = bdrv_open(&medium_bs, filename, NULL, options, bdrv_flags, errp); | |
2578 | if (ret < 0) { | |
2579 | goto fail; | |
2580 | } | |
2581 | ||
2582 | blk_apply_root_state(blk, medium_bs); | |
2583 | ||
2584 | bdrv_add_key(medium_bs, NULL, &err); | |
2585 | if (err) { | |
2586 | error_propagate(errp, err); | |
2587 | goto fail; | |
2588 | } | |
2589 | ||
2590 | qmp_blockdev_open_tray(device, false, false, &err); | |
2591 | if (err) { | |
2592 | error_propagate(errp, err); | |
2593 | goto fail; | |
2594 | } | |
2595 | ||
6e0abc25 | 2596 | qmp_x_blockdev_remove_medium(device, &err); |
de2c6c05 HR |
2597 | if (err) { |
2598 | error_propagate(errp, err); | |
2599 | goto fail; | |
2600 | } | |
2601 | ||
2602 | qmp_blockdev_insert_anon_medium(device, medium_bs, &err); | |
2603 | if (err) { | |
2604 | error_propagate(errp, err); | |
2605 | goto fail; | |
2606 | } | |
2607 | ||
73ac451f KW |
2608 | bdrv_set_enable_write_cache(medium_bs, !writethrough); |
2609 | ||
de2c6c05 HR |
2610 | qmp_blockdev_close_tray(device, errp); |
2611 | ||
2612 | fail: | |
2613 | /* If the medium has been inserted, the device has its own reference, so | |
2614 | * ours must be relinquished; and if it has not been inserted successfully, | |
2615 | * the reference must be relinquished anyway */ | |
2616 | bdrv_unref(medium_bs); | |
2617 | } | |
2618 | ||
727f005e | 2619 | /* throttling disk I/O limits */ |
80047da5 | 2620 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
2621 | int64_t bps_wr, |
2622 | int64_t iops, | |
2623 | int64_t iops_rd, | |
2624 | int64_t iops_wr, | |
2625 | bool has_bps_max, | |
2626 | int64_t bps_max, | |
2627 | bool has_bps_rd_max, | |
2628 | int64_t bps_rd_max, | |
2629 | bool has_bps_wr_max, | |
2630 | int64_t bps_wr_max, | |
2631 | bool has_iops_max, | |
2632 | int64_t iops_max, | |
2633 | bool has_iops_rd_max, | |
2634 | int64_t iops_rd_max, | |
2635 | bool has_iops_wr_max, | |
2024c1df | 2636 | int64_t iops_wr_max, |
dce13204 AG |
2637 | bool has_bps_max_length, |
2638 | int64_t bps_max_length, | |
2639 | bool has_bps_rd_max_length, | |
2640 | int64_t bps_rd_max_length, | |
2641 | bool has_bps_wr_max_length, | |
2642 | int64_t bps_wr_max_length, | |
2643 | bool has_iops_max_length, | |
2644 | int64_t iops_max_length, | |
2645 | bool has_iops_rd_max_length, | |
2646 | int64_t iops_rd_max_length, | |
2647 | bool has_iops_wr_max_length, | |
2648 | int64_t iops_wr_max_length, | |
2024c1df | 2649 | bool has_iops_size, |
76f4afb4 AG |
2650 | int64_t iops_size, |
2651 | bool has_group, | |
2652 | const char *group, Error **errp) | |
727f005e | 2653 | { |
cc0681c4 | 2654 | ThrottleConfig cfg; |
727f005e | 2655 | BlockDriverState *bs; |
a0e8544c | 2656 | BlockBackend *blk; |
b15446fd | 2657 | AioContext *aio_context; |
727f005e | 2658 | |
a0e8544c FZ |
2659 | blk = blk_by_name(device); |
2660 | if (!blk) { | |
75158ebb MA |
2661 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
2662 | "Device '%s' not found", device); | |
80047da5 | 2663 | return; |
727f005e | 2664 | } |
5433c24f HR |
2665 | |
2666 | aio_context = blk_get_aio_context(blk); | |
2667 | aio_context_acquire(aio_context); | |
2668 | ||
a0e8544c | 2669 | bs = blk_bs(blk); |
5433c24f HR |
2670 | if (!bs) { |
2671 | error_setg(errp, "Device '%s' has no medium", device); | |
2672 | goto out; | |
2673 | } | |
727f005e | 2674 | |
1588ab5d | 2675 | throttle_config_init(&cfg); |
cc0681c4 BC |
2676 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; |
2677 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
2678 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
2679 | ||
2680 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
2681 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
2682 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
2683 | ||
3e9fab69 BC |
2684 | if (has_bps_max) { |
2685 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
2686 | } | |
2687 | if (has_bps_rd_max) { | |
2688 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
2689 | } | |
2690 | if (has_bps_wr_max) { | |
2691 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
2692 | } | |
2693 | if (has_iops_max) { | |
2694 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
2695 | } | |
2696 | if (has_iops_rd_max) { | |
2697 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
2698 | } | |
2699 | if (has_iops_wr_max) { | |
2700 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
2701 | } | |
727f005e | 2702 | |
dce13204 AG |
2703 | if (has_bps_max_length) { |
2704 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = bps_max_length; | |
2705 | } | |
2706 | if (has_bps_rd_max_length) { | |
2707 | cfg.buckets[THROTTLE_BPS_READ].burst_length = bps_rd_max_length; | |
2708 | } | |
2709 | if (has_bps_wr_max_length) { | |
2710 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = bps_wr_max_length; | |
2711 | } | |
2712 | if (has_iops_max_length) { | |
2713 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = iops_max_length; | |
2714 | } | |
2715 | if (has_iops_rd_max_length) { | |
2716 | cfg.buckets[THROTTLE_OPS_READ].burst_length = iops_rd_max_length; | |
2717 | } | |
2718 | if (has_iops_wr_max_length) { | |
2719 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = iops_wr_max_length; | |
2720 | } | |
2721 | ||
2024c1df BC |
2722 | if (has_iops_size) { |
2723 | cfg.op_size = iops_size; | |
2724 | } | |
cc0681c4 | 2725 | |
d5851089 | 2726 | if (!throttle_is_valid(&cfg, errp)) { |
5433c24f | 2727 | goto out; |
727f005e ZYW |
2728 | } |
2729 | ||
76f4afb4 AG |
2730 | if (throttle_enabled(&cfg)) { |
2731 | /* Enable I/O limits if they're not enabled yet, otherwise | |
2732 | * just update the throttling group. */ | |
a0d64a61 | 2733 | if (!bs->throttle_state) { |
76f4afb4 AG |
2734 | bdrv_io_limits_enable(bs, has_group ? group : device); |
2735 | } else if (has_group) { | |
2736 | bdrv_io_limits_update_group(bs, group); | |
2737 | } | |
2738 | /* Set the new throttling configuration */ | |
cc0681c4 | 2739 | bdrv_set_io_limits(bs, &cfg); |
a0d64a61 | 2740 | } else if (bs->throttle_state) { |
76f4afb4 AG |
2741 | /* If all throttling settings are set to 0, disable I/O limits */ |
2742 | bdrv_io_limits_disable(bs); | |
727f005e | 2743 | } |
b15446fd | 2744 | |
5433c24f | 2745 | out: |
b15446fd | 2746 | aio_context_release(aio_context); |
727f005e ZYW |
2747 | } |
2748 | ||
341ebc2f JS |
2749 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
2750 | bool has_granularity, uint32_t granularity, | |
2751 | Error **errp) | |
2752 | { | |
2753 | AioContext *aio_context; | |
2754 | BlockDriverState *bs; | |
2755 | ||
2756 | if (!name || name[0] == '\0') { | |
2757 | error_setg(errp, "Bitmap name cannot be empty"); | |
2758 | return; | |
2759 | } | |
2760 | ||
2761 | bs = bdrv_lookup_bs(node, node, errp); | |
2762 | if (!bs) { | |
2763 | return; | |
2764 | } | |
2765 | ||
2766 | aio_context = bdrv_get_aio_context(bs); | |
2767 | aio_context_acquire(aio_context); | |
2768 | ||
2769 | if (has_granularity) { | |
2770 | if (granularity < 512 || !is_power_of_2(granularity)) { | |
2771 | error_setg(errp, "Granularity must be power of 2 " | |
2772 | "and at least 512"); | |
2773 | goto out; | |
2774 | } | |
2775 | } else { | |
2776 | /* Default to cluster size, if available: */ | |
2777 | granularity = bdrv_get_default_bitmap_granularity(bs); | |
2778 | } | |
2779 | ||
2780 | bdrv_create_dirty_bitmap(bs, granularity, name, errp); | |
2781 | ||
2782 | out: | |
2783 | aio_context_release(aio_context); | |
2784 | } | |
2785 | ||
2786 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, | |
2787 | Error **errp) | |
2788 | { | |
2789 | AioContext *aio_context; | |
2790 | BlockDriverState *bs; | |
2791 | BdrvDirtyBitmap *bitmap; | |
2792 | ||
2793 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); | |
2794 | if (!bitmap || !bs) { | |
2795 | return; | |
2796 | } | |
2797 | ||
9bd2b08f JS |
2798 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
2799 | error_setg(errp, | |
2800 | "Bitmap '%s' is currently frozen and cannot be removed", | |
2801 | name); | |
2802 | goto out; | |
2803 | } | |
20dca810 | 2804 | bdrv_dirty_bitmap_make_anon(bitmap); |
341ebc2f JS |
2805 | bdrv_release_dirty_bitmap(bs, bitmap); |
2806 | ||
9bd2b08f | 2807 | out: |
341ebc2f JS |
2808 | aio_context_release(aio_context); |
2809 | } | |
2810 | ||
e74e6b78 JS |
2811 | /** |
2812 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap | |
2813 | * immediately after a full backup operation. | |
2814 | */ | |
2815 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, | |
2816 | Error **errp) | |
2817 | { | |
2818 | AioContext *aio_context; | |
2819 | BdrvDirtyBitmap *bitmap; | |
2820 | BlockDriverState *bs; | |
2821 | ||
2822 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); | |
2823 | if (!bitmap || !bs) { | |
2824 | return; | |
2825 | } | |
2826 | ||
2827 | if (bdrv_dirty_bitmap_frozen(bitmap)) { | |
2828 | error_setg(errp, | |
2829 | "Bitmap '%s' is currently frozen and cannot be modified", | |
2830 | name); | |
2831 | goto out; | |
2832 | } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { | |
2833 | error_setg(errp, | |
2834 | "Bitmap '%s' is currently disabled and cannot be cleared", | |
2835 | name); | |
2836 | goto out; | |
2837 | } | |
2838 | ||
df9a681d | 2839 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
e74e6b78 JS |
2840 | |
2841 | out: | |
2842 | aio_context_release(aio_context); | |
2843 | } | |
2844 | ||
072ebe6b | 2845 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
9063f814 RH |
2846 | { |
2847 | const char *id = qdict_get_str(qdict, "id"); | |
7e7d56d9 | 2848 | BlockBackend *blk; |
9063f814 | 2849 | BlockDriverState *bs; |
8ad4202b | 2850 | AioContext *aio_context; |
3718d8ab | 2851 | Error *local_err = NULL; |
9063f814 | 2852 | |
2073d410 KW |
2853 | bs = bdrv_find_node(id); |
2854 | if (bs) { | |
2855 | qmp_x_blockdev_del(false, NULL, true, id, &local_err); | |
2856 | if (local_err) { | |
2857 | error_report_err(local_err); | |
2858 | } | |
2859 | return; | |
2860 | } | |
2861 | ||
7e7d56d9 MA |
2862 | blk = blk_by_name(id); |
2863 | if (!blk) { | |
b1422f20 | 2864 | error_report("Device '%s' not found", id); |
072ebe6b | 2865 | return; |
9063f814 | 2866 | } |
8ad4202b | 2867 | |
26f8b3a8 | 2868 | if (!blk_legacy_dinfo(blk)) { |
48f364dd MA |
2869 | error_report("Deleting device added with blockdev-add" |
2870 | " is not supported"); | |
072ebe6b | 2871 | return; |
48f364dd MA |
2872 | } |
2873 | ||
5433c24f | 2874 | aio_context = blk_get_aio_context(blk); |
8ad4202b SH |
2875 | aio_context_acquire(aio_context); |
2876 | ||
5433c24f HR |
2877 | bs = blk_bs(blk); |
2878 | if (bs) { | |
2879 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { | |
2880 | error_report_err(local_err); | |
2881 | aio_context_release(aio_context); | |
2882 | return; | |
2883 | } | |
9063f814 | 2884 | |
938abd43 | 2885 | blk_remove_bs(blk); |
5433c24f | 2886 | } |
9063f814 | 2887 | |
7c735873 | 2888 | /* Make the BlockBackend and the attached BlockDriverState anonymous */ |
efaa7c4e HR |
2889 | monitor_remove_blk(blk); |
2890 | ||
7c735873 HR |
2891 | /* If this BlockBackend has a device attached to it, its refcount will be |
2892 | * decremented when the device is removed; otherwise we have to do so here. | |
d22b2f41 | 2893 | */ |
a7f53e26 | 2894 | if (blk_get_attached_dev(blk)) { |
293c51a6 | 2895 | /* Further I/O must not pause the guest */ |
373340b2 HR |
2896 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
2897 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 2898 | } else { |
b9fe8a7a | 2899 | blk_unref(blk); |
9063f814 RH |
2900 | } |
2901 | ||
8ad4202b | 2902 | aio_context_release(aio_context); |
9063f814 | 2903 | } |
6d4a2b3a | 2904 | |
3b1dbd11 BC |
2905 | void qmp_block_resize(bool has_device, const char *device, |
2906 | bool has_node_name, const char *node_name, | |
2907 | int64_t size, Error **errp) | |
6d4a2b3a | 2908 | { |
3b1dbd11 | 2909 | Error *local_err = NULL; |
6d4a2b3a | 2910 | BlockDriverState *bs; |
927e0e76 | 2911 | AioContext *aio_context; |
8732901e | 2912 | int ret; |
6d4a2b3a | 2913 | |
3b1dbd11 BC |
2914 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
2915 | has_node_name ? node_name : NULL, | |
2916 | &local_err); | |
84d18f06 | 2917 | if (local_err) { |
3b1dbd11 BC |
2918 | error_propagate(errp, local_err); |
2919 | return; | |
2920 | } | |
2921 | ||
927e0e76 SH |
2922 | aio_context = bdrv_get_aio_context(bs); |
2923 | aio_context_acquire(aio_context); | |
2924 | ||
3b1dbd11 | 2925 | if (!bdrv_is_first_non_filter(bs)) { |
c6bd8c70 | 2926 | error_setg(errp, QERR_FEATURE_DISABLED, "resize"); |
927e0e76 | 2927 | goto out; |
6d4a2b3a CH |
2928 | } |
2929 | ||
2930 | if (size < 0) { | |
c6bd8c70 | 2931 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 2932 | goto out; |
6d4a2b3a CH |
2933 | } |
2934 | ||
9c75e168 | 2935 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
c6bd8c70 | 2936 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
927e0e76 | 2937 | goto out; |
9c75e168 JC |
2938 | } |
2939 | ||
92b7a08d PL |
2940 | /* complete all in-flight operations before resizing the device */ |
2941 | bdrv_drain_all(); | |
2942 | ||
8732901e KW |
2943 | ret = bdrv_truncate(bs, size); |
2944 | switch (ret) { | |
939a1cc3 SH |
2945 | case 0: |
2946 | break; | |
2947 | case -ENOMEDIUM: | |
c6bd8c70 | 2948 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
939a1cc3 SH |
2949 | break; |
2950 | case -ENOTSUP: | |
c6bd8c70 | 2951 | error_setg(errp, QERR_UNSUPPORTED); |
939a1cc3 SH |
2952 | break; |
2953 | case -EACCES: | |
81e5f78a | 2954 | error_setg(errp, "Device '%s' is read only", device); |
939a1cc3 SH |
2955 | break; |
2956 | case -EBUSY: | |
c6bd8c70 | 2957 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
939a1cc3 SH |
2958 | break; |
2959 | default: | |
8732901e | 2960 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 2961 | break; |
6d4a2b3a | 2962 | } |
927e0e76 SH |
2963 | |
2964 | out: | |
2965 | aio_context_release(aio_context); | |
6d4a2b3a | 2966 | } |
12bd451f | 2967 | |
9abf2dba | 2968 | static void block_job_cb(void *opaque, int ret) |
12bd451f | 2969 | { |
723c5d93 SH |
2970 | /* Note that this function may be executed from another AioContext besides |
2971 | * the QEMU main loop. If you need to access anything that assumes the | |
2972 | * QEMU global mutex, use a BH or introduce a mutex. | |
2973 | */ | |
2974 | ||
12bd451f | 2975 | BlockDriverState *bs = opaque; |
bcada37b | 2976 | const char *msg = NULL; |
12bd451f | 2977 | |
9abf2dba | 2978 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
2979 | |
2980 | assert(bs->job); | |
bcada37b | 2981 | |
12bd451f | 2982 | if (ret < 0) { |
bcada37b | 2983 | msg = strerror(-ret); |
12bd451f SH |
2984 | } |
2985 | ||
370521a1 | 2986 | if (block_job_is_cancelled(bs->job)) { |
bcada37b | 2987 | block_job_event_cancelled(bs->job); |
370521a1 | 2988 | } else { |
bcada37b | 2989 | block_job_event_completed(bs->job, msg); |
370521a1 | 2990 | } |
12bd451f SH |
2991 | } |
2992 | ||
13d8cc51 JC |
2993 | void qmp_block_stream(const char *device, |
2994 | bool has_base, const char *base, | |
2995 | bool has_backing_file, const char *backing_file, | |
2996 | bool has_speed, int64_t speed, | |
1d809098 PB |
2997 | bool has_on_error, BlockdevOnError on_error, |
2998 | Error **errp) | |
12bd451f | 2999 | { |
a0e8544c | 3000 | BlockBackend *blk; |
12bd451f | 3001 | BlockDriverState *bs; |
c8c3080f | 3002 | BlockDriverState *base_bs = NULL; |
f3e69beb | 3003 | AioContext *aio_context; |
fd7f8c65 | 3004 | Error *local_err = NULL; |
13d8cc51 | 3005 | const char *base_name = NULL; |
12bd451f | 3006 | |
1d809098 PB |
3007 | if (!has_on_error) { |
3008 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
3009 | } | |
3010 | ||
a0e8544c FZ |
3011 | blk = blk_by_name(device); |
3012 | if (!blk) { | |
75158ebb MA |
3013 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3014 | "Device '%s' not found", device); | |
12bd451f SH |
3015 | return; |
3016 | } | |
3017 | ||
5433c24f | 3018 | aio_context = blk_get_aio_context(blk); |
f3e69beb SH |
3019 | aio_context_acquire(aio_context); |
3020 | ||
5433c24f HR |
3021 | if (!blk_is_available(blk)) { |
3022 | error_setg(errp, "Device '%s' has no medium", device); | |
3023 | goto out; | |
3024 | } | |
3025 | bs = blk_bs(blk); | |
3026 | ||
628ff683 | 3027 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
f3e69beb | 3028 | goto out; |
628ff683 FZ |
3029 | } |
3030 | ||
13d8cc51 | 3031 | if (has_base) { |
c8c3080f MT |
3032 | base_bs = bdrv_find_backing_image(bs, base); |
3033 | if (base_bs == NULL) { | |
c6bd8c70 | 3034 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
f3e69beb | 3035 | goto out; |
c8c3080f | 3036 | } |
f3e69beb | 3037 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
13d8cc51 | 3038 | base_name = base; |
12bd451f SH |
3039 | } |
3040 | ||
13d8cc51 JC |
3041 | /* if we are streaming the entire chain, the result will have no backing |
3042 | * file, and specifying one is therefore an error */ | |
3043 | if (base_bs == NULL && has_backing_file) { | |
3044 | error_setg(errp, "backing file specified, but streaming the " | |
3045 | "entire chain"); | |
f3e69beb | 3046 | goto out; |
13d8cc51 JC |
3047 | } |
3048 | ||
3049 | /* backing_file string overrides base bs filename */ | |
3050 | base_name = has_backing_file ? backing_file : base_name; | |
3051 | ||
3052 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, | |
1d809098 | 3053 | on_error, block_job_cb, bs, &local_err); |
84d18f06 | 3054 | if (local_err) { |
fd7f8c65 | 3055 | error_propagate(errp, local_err); |
f3e69beb | 3056 | goto out; |
12bd451f SH |
3057 | } |
3058 | ||
3059 | trace_qmp_block_stream(bs, bs->job); | |
f3e69beb SH |
3060 | |
3061 | out: | |
3062 | aio_context_release(aio_context); | |
12bd451f | 3063 | } |
2d47c6e9 | 3064 | |
ed61fc10 | 3065 | void qmp_block_commit(const char *device, |
7676e2c5 JC |
3066 | bool has_base, const char *base, |
3067 | bool has_top, const char *top, | |
54e26900 | 3068 | bool has_backing_file, const char *backing_file, |
ed61fc10 JC |
3069 | bool has_speed, int64_t speed, |
3070 | Error **errp) | |
3071 | { | |
a0e8544c | 3072 | BlockBackend *blk; |
ed61fc10 JC |
3073 | BlockDriverState *bs; |
3074 | BlockDriverState *base_bs, *top_bs; | |
9e85cd5c | 3075 | AioContext *aio_context; |
ed61fc10 JC |
3076 | Error *local_err = NULL; |
3077 | /* This will be part of the QMP command, if/when the | |
3078 | * BlockdevOnError change for blkmirror makes it in | |
3079 | */ | |
92aa5c6d | 3080 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 | 3081 | |
54504663 HR |
3082 | if (!has_speed) { |
3083 | speed = 0; | |
3084 | } | |
3085 | ||
7676e2c5 JC |
3086 | /* Important Note: |
3087 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
3088 | * live commit feature versions; for this to work, we must make sure to | |
3089 | * perform the device lookup before any generic errors that may occur in a | |
3090 | * scenario in which all optional arguments are omitted. */ | |
a0e8544c FZ |
3091 | blk = blk_by_name(device); |
3092 | if (!blk) { | |
75158ebb MA |
3093 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3094 | "Device '%s' not found", device); | |
ed61fc10 | 3095 | return; |
628ff683 FZ |
3096 | } |
3097 | ||
5433c24f | 3098 | aio_context = blk_get_aio_context(blk); |
9e85cd5c SH |
3099 | aio_context_acquire(aio_context); |
3100 | ||
5433c24f HR |
3101 | if (!blk_is_available(blk)) { |
3102 | error_setg(errp, "Device '%s' has no medium", device); | |
3103 | goto out; | |
3104 | } | |
3105 | bs = blk_bs(blk); | |
3106 | ||
bb00021d | 3107 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
9e85cd5c | 3108 | goto out; |
ed61fc10 | 3109 | } |
ed61fc10 JC |
3110 | |
3111 | /* default top_bs is the active layer */ | |
3112 | top_bs = bs; | |
3113 | ||
7676e2c5 | 3114 | if (has_top && top) { |
ed61fc10 JC |
3115 | if (strcmp(bs->filename, top) != 0) { |
3116 | top_bs = bdrv_find_backing_image(bs, top); | |
3117 | } | |
3118 | } | |
3119 | ||
3120 | if (top_bs == NULL) { | |
3121 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
9e85cd5c | 3122 | goto out; |
ed61fc10 JC |
3123 | } |
3124 | ||
9e85cd5c SH |
3125 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
3126 | ||
d5208c45 JC |
3127 | if (has_base && base) { |
3128 | base_bs = bdrv_find_backing_image(top_bs, base); | |
3129 | } else { | |
3130 | base_bs = bdrv_find_base(top_bs); | |
3131 | } | |
3132 | ||
3133 | if (base_bs == NULL) { | |
c6bd8c70 | 3134 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
9e85cd5c | 3135 | goto out; |
d5208c45 JC |
3136 | } |
3137 | ||
9e85cd5c SH |
3138 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
3139 | ||
bb00021d FZ |
3140 | if (bdrv_op_is_blocked(base_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
3141 | goto out; | |
3142 | } | |
3143 | ||
7676e2c5 JC |
3144 | /* Do not allow attempts to commit an image into itself */ |
3145 | if (top_bs == base_bs) { | |
3146 | error_setg(errp, "cannot commit an image into itself"); | |
9e85cd5c | 3147 | goto out; |
7676e2c5 JC |
3148 | } |
3149 | ||
20a63d2c | 3150 | if (top_bs == bs) { |
54e26900 JC |
3151 | if (has_backing_file) { |
3152 | error_setg(errp, "'backing-file' specified," | |
3153 | " but 'top' is the active layer"); | |
9e85cd5c | 3154 | goto out; |
54e26900 | 3155 | } |
20a63d2c FZ |
3156 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
3157 | bs, &local_err); | |
3158 | } else { | |
3159 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, | |
54e26900 | 3160 | has_backing_file ? backing_file : NULL, &local_err); |
20a63d2c | 3161 | } |
ed61fc10 JC |
3162 | if (local_err != NULL) { |
3163 | error_propagate(errp, local_err); | |
9e85cd5c | 3164 | goto out; |
ed61fc10 | 3165 | } |
9e85cd5c SH |
3166 | |
3167 | out: | |
3168 | aio_context_release(aio_context); | |
ed61fc10 JC |
3169 | } |
3170 | ||
78f51fde JS |
3171 | static void do_drive_backup(const char *device, const char *target, |
3172 | bool has_format, const char *format, | |
3173 | enum MirrorSyncMode sync, | |
3174 | bool has_mode, enum NewImageMode mode, | |
3175 | bool has_speed, int64_t speed, | |
3176 | bool has_bitmap, const char *bitmap, | |
3177 | bool has_on_source_error, | |
3178 | BlockdevOnError on_source_error, | |
3179 | bool has_on_target_error, | |
3180 | BlockdevOnError on_target_error, | |
3181 | BlockJobTxn *txn, Error **errp) | |
99a9addf | 3182 | { |
a0e8544c | 3183 | BlockBackend *blk; |
99a9addf SH |
3184 | BlockDriverState *bs; |
3185 | BlockDriverState *target_bs; | |
fc5d3f84 | 3186 | BlockDriverState *source = NULL; |
d58d8453 | 3187 | BdrvDirtyBitmap *bmap = NULL; |
761731b1 | 3188 | AioContext *aio_context; |
e6641719 | 3189 | QDict *options = NULL; |
99a9addf SH |
3190 | Error *local_err = NULL; |
3191 | int flags; | |
3192 | int64_t size; | |
3193 | int ret; | |
3194 | ||
3195 | if (!has_speed) { | |
3196 | speed = 0; | |
3197 | } | |
3198 | if (!has_on_source_error) { | |
3199 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3200 | } | |
3201 | if (!has_on_target_error) { | |
3202 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3203 | } | |
3204 | if (!has_mode) { | |
3205 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
3206 | } | |
3207 | ||
a0e8544c FZ |
3208 | blk = blk_by_name(device); |
3209 | if (!blk) { | |
75158ebb MA |
3210 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3211 | "Device '%s' not found", device); | |
99a9addf SH |
3212 | return; |
3213 | } | |
3214 | ||
5433c24f | 3215 | aio_context = blk_get_aio_context(blk); |
761731b1 SH |
3216 | aio_context_acquire(aio_context); |
3217 | ||
c29c1dd3 FZ |
3218 | /* Although backup_run has this check too, we need to use bs->drv below, so |
3219 | * do an early check redundantly. */ | |
5433c24f | 3220 | if (!blk_is_available(blk)) { |
c6bd8c70 | 3221 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
761731b1 | 3222 | goto out; |
99a9addf | 3223 | } |
5433c24f | 3224 | bs = blk_bs(blk); |
99a9addf SH |
3225 | |
3226 | if (!has_format) { | |
3227 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
3228 | } | |
99a9addf | 3229 | |
c29c1dd3 | 3230 | /* Early check to avoid creating target */ |
3718d8ab | 3231 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
761731b1 | 3232 | goto out; |
99a9addf SH |
3233 | } |
3234 | ||
73ac451f | 3235 | flags = bs->open_flags | BDRV_O_CACHE_WB | BDRV_O_RDWR; |
99a9addf | 3236 | |
fc5d3f84 IM |
3237 | /* See if we have a backing HD we can use to create our new image |
3238 | * on top of. */ | |
3239 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
760e0063 | 3240 | source = backing_bs(bs); |
fc5d3f84 IM |
3241 | if (!source) { |
3242 | sync = MIRROR_SYNC_MODE_FULL; | |
3243 | } | |
3244 | } | |
3245 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
3246 | source = bs; | |
3247 | } | |
3248 | ||
99a9addf SH |
3249 | size = bdrv_getlength(bs); |
3250 | if (size < 0) { | |
3251 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
761731b1 | 3252 | goto out; |
99a9addf SH |
3253 | } |
3254 | ||
3255 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
e6641719 | 3256 | assert(format); |
fc5d3f84 IM |
3257 | if (source) { |
3258 | bdrv_img_create(target, format, source->filename, | |
3259 | source->drv->format_name, NULL, | |
3260 | size, flags, &local_err, false); | |
3261 | } else { | |
3262 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
3263 | size, flags, &local_err, false); | |
3264 | } | |
99a9addf SH |
3265 | } |
3266 | ||
84d18f06 | 3267 | if (local_err) { |
99a9addf | 3268 | error_propagate(errp, local_err); |
761731b1 | 3269 | goto out; |
99a9addf SH |
3270 | } |
3271 | ||
e6641719 HR |
3272 | if (format) { |
3273 | options = qdict_new(); | |
3274 | qdict_put(options, "driver", qstring_from_str(format)); | |
3275 | } | |
3276 | ||
f67503e5 | 3277 | target_bs = NULL; |
6ebf9aa2 | 3278 | ret = bdrv_open(&target_bs, target, NULL, options, flags, &local_err); |
99a9addf | 3279 | if (ret < 0) { |
34b5d2c6 | 3280 | error_propagate(errp, local_err); |
761731b1 | 3281 | goto out; |
99a9addf SH |
3282 | } |
3283 | ||
761731b1 SH |
3284 | bdrv_set_aio_context(target_bs, aio_context); |
3285 | ||
d58d8453 JS |
3286 | if (has_bitmap) { |
3287 | bmap = bdrv_find_dirty_bitmap(bs, bitmap); | |
3288 | if (!bmap) { | |
3289 | error_setg(errp, "Bitmap '%s' could not be found", bitmap); | |
0702d3d8 | 3290 | bdrv_unref(target_bs); |
d58d8453 JS |
3291 | goto out; |
3292 | } | |
3293 | } | |
3294 | ||
3295 | backup_start(bs, target_bs, speed, sync, bmap, | |
3296 | on_source_error, on_target_error, | |
78f51fde | 3297 | block_job_cb, bs, txn, &local_err); |
99a9addf | 3298 | if (local_err != NULL) { |
4f6fd349 | 3299 | bdrv_unref(target_bs); |
99a9addf | 3300 | error_propagate(errp, local_err); |
761731b1 | 3301 | goto out; |
99a9addf | 3302 | } |
761731b1 SH |
3303 | |
3304 | out: | |
3305 | aio_context_release(aio_context); | |
99a9addf SH |
3306 | } |
3307 | ||
78f51fde JS |
3308 | void qmp_drive_backup(const char *device, const char *target, |
3309 | bool has_format, const char *format, | |
3310 | enum MirrorSyncMode sync, | |
3311 | bool has_mode, enum NewImageMode mode, | |
3312 | bool has_speed, int64_t speed, | |
3313 | bool has_bitmap, const char *bitmap, | |
3314 | bool has_on_source_error, BlockdevOnError on_source_error, | |
3315 | bool has_on_target_error, BlockdevOnError on_target_error, | |
3316 | Error **errp) | |
3317 | { | |
3318 | return do_drive_backup(device, target, has_format, format, sync, | |
3319 | has_mode, mode, has_speed, speed, | |
3320 | has_bitmap, bitmap, | |
3321 | has_on_source_error, on_source_error, | |
3322 | has_on_target_error, on_target_error, | |
3323 | NULL, errp); | |
3324 | } | |
3325 | ||
c13163fb BC |
3326 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
3327 | { | |
d5a8ee60 | 3328 | return bdrv_named_nodes_list(errp); |
c13163fb BC |
3329 | } |
3330 | ||
78f51fde | 3331 | void do_blockdev_backup(const char *device, const char *target, |
c29c1dd3 FZ |
3332 | enum MirrorSyncMode sync, |
3333 | bool has_speed, int64_t speed, | |
3334 | bool has_on_source_error, | |
3335 | BlockdevOnError on_source_error, | |
3336 | bool has_on_target_error, | |
3337 | BlockdevOnError on_target_error, | |
78f51fde | 3338 | BlockJobTxn *txn, Error **errp) |
c29c1dd3 | 3339 | { |
5433c24f | 3340 | BlockBackend *blk, *target_blk; |
c29c1dd3 FZ |
3341 | BlockDriverState *bs; |
3342 | BlockDriverState *target_bs; | |
3343 | Error *local_err = NULL; | |
3344 | AioContext *aio_context; | |
3345 | ||
3346 | if (!has_speed) { | |
3347 | speed = 0; | |
3348 | } | |
3349 | if (!has_on_source_error) { | |
3350 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3351 | } | |
3352 | if (!has_on_target_error) { | |
3353 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3354 | } | |
3355 | ||
a0e8544c FZ |
3356 | blk = blk_by_name(device); |
3357 | if (!blk) { | |
5b347c54 | 3358 | error_setg(errp, "Device '%s' not found", device); |
c29c1dd3 FZ |
3359 | return; |
3360 | } | |
3361 | ||
5433c24f | 3362 | aio_context = blk_get_aio_context(blk); |
c29c1dd3 FZ |
3363 | aio_context_acquire(aio_context); |
3364 | ||
5433c24f HR |
3365 | if (!blk_is_available(blk)) { |
3366 | error_setg(errp, "Device '%s' has no medium", device); | |
3367 | goto out; | |
3368 | } | |
3369 | bs = blk_bs(blk); | |
3370 | ||
3371 | target_blk = blk_by_name(target); | |
3372 | if (!target_blk) { | |
5b347c54 | 3373 | error_setg(errp, "Device '%s' not found", target); |
c29c1dd3 FZ |
3374 | goto out; |
3375 | } | |
5433c24f HR |
3376 | |
3377 | if (!blk_is_available(target_blk)) { | |
3378 | error_setg(errp, "Device '%s' has no medium", target); | |
3379 | goto out; | |
3380 | } | |
3381 | target_bs = blk_bs(target_blk); | |
c29c1dd3 FZ |
3382 | |
3383 | bdrv_ref(target_bs); | |
3384 | bdrv_set_aio_context(target_bs, aio_context); | |
d58d8453 | 3385 | backup_start(bs, target_bs, speed, sync, NULL, on_source_error, |
78f51fde | 3386 | on_target_error, block_job_cb, bs, txn, &local_err); |
c29c1dd3 FZ |
3387 | if (local_err != NULL) { |
3388 | bdrv_unref(target_bs); | |
3389 | error_propagate(errp, local_err); | |
3390 | } | |
3391 | out: | |
3392 | aio_context_release(aio_context); | |
3393 | } | |
3394 | ||
78f51fde JS |
3395 | void qmp_blockdev_backup(const char *device, const char *target, |
3396 | enum MirrorSyncMode sync, | |
3397 | bool has_speed, int64_t speed, | |
3398 | bool has_on_source_error, | |
3399 | BlockdevOnError on_source_error, | |
3400 | bool has_on_target_error, | |
3401 | BlockdevOnError on_target_error, | |
3402 | Error **errp) | |
3403 | { | |
3404 | do_blockdev_backup(device, target, sync, has_speed, speed, | |
3405 | has_on_source_error, on_source_error, | |
3406 | has_on_target_error, on_target_error, | |
3407 | NULL, errp); | |
3408 | } | |
3409 | ||
4193cdd7 FZ |
3410 | /* Parameter check and block job starting for drive mirroring. |
3411 | * Caller should hold @device and @target's aio context (must be the same). | |
3412 | **/ | |
3413 | static void blockdev_mirror_common(BlockDriverState *bs, | |
3414 | BlockDriverState *target, | |
3415 | bool has_replaces, const char *replaces, | |
3416 | enum MirrorSyncMode sync, | |
3417 | bool has_speed, int64_t speed, | |
3418 | bool has_granularity, uint32_t granularity, | |
3419 | bool has_buf_size, int64_t buf_size, | |
3420 | bool has_on_source_error, | |
3421 | BlockdevOnError on_source_error, | |
3422 | bool has_on_target_error, | |
3423 | BlockdevOnError on_target_error, | |
3424 | bool has_unmap, bool unmap, | |
3425 | Error **errp) | |
d9b902db | 3426 | { |
d9b902db PB |
3427 | |
3428 | if (!has_speed) { | |
3429 | speed = 0; | |
3430 | } | |
b952b558 PB |
3431 | if (!has_on_source_error) { |
3432 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3433 | } | |
3434 | if (!has_on_target_error) { | |
3435 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3436 | } | |
eee13dfe PB |
3437 | if (!has_granularity) { |
3438 | granularity = 0; | |
3439 | } | |
08e4ed6c | 3440 | if (!has_buf_size) { |
48ac0a4d | 3441 | buf_size = 0; |
08e4ed6c | 3442 | } |
0fc9f8ea FZ |
3443 | if (!has_unmap) { |
3444 | unmap = true; | |
3445 | } | |
08e4ed6c | 3446 | |
eee13dfe | 3447 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
c6bd8c70 MA |
3448 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3449 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
3450 | return; |
3451 | } | |
3452 | if (granularity & (granularity - 1)) { | |
c6bd8c70 MA |
3453 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3454 | "power of 2"); | |
eee13dfe PB |
3455 | return; |
3456 | } | |
d9b902db | 3457 | |
4193cdd7 FZ |
3458 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
3459 | return; | |
3460 | } | |
e40e5027 FZ |
3461 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
3462 | return; | |
3463 | } | |
df92562e FZ |
3464 | if (target->blk) { |
3465 | error_setg(errp, "Cannot mirror to an attached block device"); | |
3466 | return; | |
3467 | } | |
4193cdd7 FZ |
3468 | |
3469 | if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) { | |
3470 | sync = MIRROR_SYNC_MODE_FULL; | |
3471 | } | |
3472 | ||
3473 | /* pass the node name to replace to mirror start since it's loose coupling | |
3474 | * and will allow to check whether the node still exist at mirror completion | |
3475 | */ | |
3476 | mirror_start(bs, target, | |
3477 | has_replaces ? replaces : NULL, | |
3478 | speed, granularity, buf_size, sync, | |
3479 | on_source_error, on_target_error, unmap, | |
3480 | block_job_cb, bs, errp); | |
3481 | } | |
3482 | ||
3483 | void qmp_drive_mirror(const char *device, const char *target, | |
3484 | bool has_format, const char *format, | |
3485 | bool has_node_name, const char *node_name, | |
3486 | bool has_replaces, const char *replaces, | |
3487 | enum MirrorSyncMode sync, | |
3488 | bool has_mode, enum NewImageMode mode, | |
3489 | bool has_speed, int64_t speed, | |
3490 | bool has_granularity, uint32_t granularity, | |
3491 | bool has_buf_size, int64_t buf_size, | |
3492 | bool has_on_source_error, BlockdevOnError on_source_error, | |
3493 | bool has_on_target_error, BlockdevOnError on_target_error, | |
3494 | bool has_unmap, bool unmap, | |
3495 | Error **errp) | |
3496 | { | |
3497 | BlockDriverState *bs; | |
3498 | BlockBackend *blk; | |
3499 | BlockDriverState *source, *target_bs; | |
3500 | AioContext *aio_context; | |
3501 | Error *local_err = NULL; | |
3502 | QDict *options = NULL; | |
3503 | int flags; | |
3504 | int64_t size; | |
3505 | int ret; | |
3506 | ||
a0e8544c FZ |
3507 | blk = blk_by_name(device); |
3508 | if (!blk) { | |
75158ebb MA |
3509 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3510 | "Device '%s' not found", device); | |
d9b902db PB |
3511 | return; |
3512 | } | |
3513 | ||
5433c24f | 3514 | aio_context = blk_get_aio_context(blk); |
5a7e7a0b SH |
3515 | aio_context_acquire(aio_context); |
3516 | ||
5433c24f | 3517 | if (!blk_is_available(blk)) { |
c6bd8c70 | 3518 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
5a7e7a0b | 3519 | goto out; |
d9b902db | 3520 | } |
5433c24f | 3521 | bs = blk_bs(blk); |
4193cdd7 FZ |
3522 | if (!has_mode) { |
3523 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
3524 | } | |
d9b902db PB |
3525 | |
3526 | if (!has_format) { | |
3527 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
3528 | } | |
d9b902db | 3529 | |
73ac451f | 3530 | flags = bs->open_flags | BDRV_O_CACHE_WB | BDRV_O_RDWR; |
760e0063 | 3531 | source = backing_bs(bs); |
d9b902db PB |
3532 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { |
3533 | sync = MIRROR_SYNC_MODE_FULL; | |
3534 | } | |
117e0c82 HR |
3535 | if (sync == MIRROR_SYNC_MODE_NONE) { |
3536 | source = bs; | |
3537 | } | |
d9b902db | 3538 | |
ac3c5d83 SH |
3539 | size = bdrv_getlength(bs); |
3540 | if (size < 0) { | |
3541 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
5a7e7a0b | 3542 | goto out; |
ac3c5d83 SH |
3543 | } |
3544 | ||
09158f00 BC |
3545 | if (has_replaces) { |
3546 | BlockDriverState *to_replace_bs; | |
5a7e7a0b SH |
3547 | AioContext *replace_aio_context; |
3548 | int64_t replace_size; | |
09158f00 BC |
3549 | |
3550 | if (!has_node_name) { | |
3551 | error_setg(errp, "a node-name must be provided when replacing a" | |
3552 | " named node of the graph"); | |
5a7e7a0b | 3553 | goto out; |
09158f00 BC |
3554 | } |
3555 | ||
e12f3784 | 3556 | to_replace_bs = check_to_replace_node(bs, replaces, &local_err); |
09158f00 BC |
3557 | |
3558 | if (!to_replace_bs) { | |
3559 | error_propagate(errp, local_err); | |
5a7e7a0b | 3560 | goto out; |
09158f00 BC |
3561 | } |
3562 | ||
5a7e7a0b SH |
3563 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
3564 | aio_context_acquire(replace_aio_context); | |
3565 | replace_size = bdrv_getlength(to_replace_bs); | |
3566 | aio_context_release(replace_aio_context); | |
3567 | ||
3568 | if (size != replace_size) { | |
09158f00 BC |
3569 | error_setg(errp, "cannot replace image with a mirror image of " |
3570 | "different size"); | |
5a7e7a0b | 3571 | goto out; |
09158f00 BC |
3572 | } |
3573 | } | |
3574 | ||
14526864 HR |
3575 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
3576 | && mode != NEW_IMAGE_MODE_EXISTING) | |
3577 | { | |
d9b902db | 3578 | /* create new image w/o backing file */ |
e6641719 | 3579 | assert(format); |
cf8f2426 | 3580 | bdrv_img_create(target, format, |
f382d43a | 3581 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
3582 | } else { |
3583 | switch (mode) { | |
3584 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
3585 | break; |
3586 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
3587 | /* create new image with backing file */ | |
cf8f2426 LC |
3588 | bdrv_img_create(target, format, |
3589 | source->filename, | |
3590 | source->drv->format_name, | |
f382d43a | 3591 | NULL, size, flags, &local_err, false); |
d9b902db PB |
3592 | break; |
3593 | default: | |
3594 | abort(); | |
3595 | } | |
3596 | } | |
3597 | ||
84d18f06 | 3598 | if (local_err) { |
cf8f2426 | 3599 | error_propagate(errp, local_err); |
5a7e7a0b | 3600 | goto out; |
d9b902db PB |
3601 | } |
3602 | ||
e6641719 | 3603 | options = qdict_new(); |
4c828dc6 | 3604 | if (has_node_name) { |
4c828dc6 BC |
3605 | qdict_put(options, "node-name", qstring_from_str(node_name)); |
3606 | } | |
e6641719 HR |
3607 | if (format) { |
3608 | qdict_put(options, "driver", qstring_from_str(format)); | |
3609 | } | |
4c828dc6 | 3610 | |
b812f671 PB |
3611 | /* Mirroring takes care of copy-on-write using the source's backing |
3612 | * file. | |
3613 | */ | |
f67503e5 | 3614 | target_bs = NULL; |
4c828dc6 | 3615 | ret = bdrv_open(&target_bs, target, NULL, options, |
6ebf9aa2 | 3616 | flags | BDRV_O_NO_BACKING, &local_err); |
d9b902db | 3617 | if (ret < 0) { |
34b5d2c6 | 3618 | error_propagate(errp, local_err); |
5a7e7a0b | 3619 | goto out; |
d9b902db PB |
3620 | } |
3621 | ||
5a7e7a0b SH |
3622 | bdrv_set_aio_context(target_bs, aio_context); |
3623 | ||
4193cdd7 FZ |
3624 | blockdev_mirror_common(bs, target_bs, |
3625 | has_replaces, replaces, sync, | |
3626 | has_speed, speed, | |
3627 | has_granularity, granularity, | |
3628 | has_buf_size, buf_size, | |
3629 | has_on_source_error, on_source_error, | |
3630 | has_on_target_error, on_target_error, | |
3631 | has_unmap, unmap, | |
3632 | &local_err); | |
3633 | if (local_err) { | |
d9b902db | 3634 | error_propagate(errp, local_err); |
4193cdd7 | 3635 | bdrv_unref(target_bs); |
d9b902db | 3636 | } |
5a7e7a0b SH |
3637 | out: |
3638 | aio_context_release(aio_context); | |
d9b902db PB |
3639 | } |
3640 | ||
df92562e FZ |
3641 | void qmp_blockdev_mirror(const char *device, const char *target, |
3642 | bool has_replaces, const char *replaces, | |
3643 | MirrorSyncMode sync, | |
3644 | bool has_speed, int64_t speed, | |
3645 | bool has_granularity, uint32_t granularity, | |
3646 | bool has_buf_size, int64_t buf_size, | |
3647 | bool has_on_source_error, | |
3648 | BlockdevOnError on_source_error, | |
3649 | bool has_on_target_error, | |
3650 | BlockdevOnError on_target_error, | |
3651 | Error **errp) | |
3652 | { | |
3653 | BlockDriverState *bs; | |
3654 | BlockBackend *blk; | |
3655 | BlockDriverState *target_bs; | |
3656 | AioContext *aio_context; | |
3657 | Error *local_err = NULL; | |
3658 | ||
3659 | blk = blk_by_name(device); | |
3660 | if (!blk) { | |
3661 | error_setg(errp, "Device '%s' not found", device); | |
3662 | return; | |
3663 | } | |
3664 | bs = blk_bs(blk); | |
3665 | ||
3666 | if (!bs) { | |
3667 | error_setg(errp, "Device '%s' has no media", device); | |
3668 | return; | |
3669 | } | |
3670 | ||
3671 | target_bs = bdrv_lookup_bs(target, target, errp); | |
3672 | if (!target_bs) { | |
3673 | return; | |
3674 | } | |
3675 | ||
3676 | aio_context = bdrv_get_aio_context(bs); | |
3677 | aio_context_acquire(aio_context); | |
3678 | ||
3679 | bdrv_ref(target_bs); | |
3680 | bdrv_set_aio_context(target_bs, aio_context); | |
3681 | ||
3682 | blockdev_mirror_common(bs, target_bs, | |
3683 | has_replaces, replaces, sync, | |
3684 | has_speed, speed, | |
3685 | has_granularity, granularity, | |
3686 | has_buf_size, buf_size, | |
3687 | has_on_source_error, on_source_error, | |
3688 | has_on_target_error, on_target_error, | |
3689 | true, true, | |
3690 | &local_err); | |
3691 | if (local_err) { | |
3692 | error_propagate(errp, local_err); | |
3693 | bdrv_unref(target_bs); | |
3694 | } | |
3695 | ||
3696 | aio_context_release(aio_context); | |
3697 | } | |
3698 | ||
3d948cdf | 3699 | /* Get the block job for a given device name and acquire its AioContext */ |
24d6bffe MA |
3700 | static BlockJob *find_block_job(const char *device, AioContext **aio_context, |
3701 | Error **errp) | |
2d47c6e9 | 3702 | { |
a0e8544c | 3703 | BlockBackend *blk; |
2d47c6e9 SH |
3704 | BlockDriverState *bs; |
3705 | ||
5433c24f HR |
3706 | *aio_context = NULL; |
3707 | ||
a0e8544c FZ |
3708 | blk = blk_by_name(device); |
3709 | if (!blk) { | |
3d948cdf SH |
3710 | goto notfound; |
3711 | } | |
3712 | ||
5433c24f | 3713 | *aio_context = blk_get_aio_context(blk); |
3d948cdf SH |
3714 | aio_context_acquire(*aio_context); |
3715 | ||
5433c24f HR |
3716 | if (!blk_is_available(blk)) { |
3717 | goto notfound; | |
3718 | } | |
3719 | bs = blk_bs(blk); | |
3720 | ||
3d948cdf | 3721 | if (!bs->job) { |
3d948cdf | 3722 | goto notfound; |
2d47c6e9 | 3723 | } |
3d948cdf | 3724 | |
2d47c6e9 | 3725 | return bs->job; |
3d948cdf SH |
3726 | |
3727 | notfound: | |
2e3a0266 MA |
3728 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
3729 | "No active block job on device '%s'", device); | |
5433c24f HR |
3730 | if (*aio_context) { |
3731 | aio_context_release(*aio_context); | |
3732 | *aio_context = NULL; | |
3733 | } | |
3d948cdf | 3734 | return NULL; |
2d47c6e9 SH |
3735 | } |
3736 | ||
882ec7ce | 3737 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 | 3738 | { |
3d948cdf | 3739 | AioContext *aio_context; |
24d6bffe | 3740 | BlockJob *job = find_block_job(device, &aio_context, errp); |
2d47c6e9 SH |
3741 | |
3742 | if (!job) { | |
2d47c6e9 SH |
3743 | return; |
3744 | } | |
3745 | ||
882ec7ce | 3746 | block_job_set_speed(job, speed, errp); |
3d948cdf | 3747 | aio_context_release(aio_context); |
2d47c6e9 | 3748 | } |
370521a1 | 3749 | |
6e37fb81 PB |
3750 | void qmp_block_job_cancel(const char *device, |
3751 | bool has_force, bool force, Error **errp) | |
370521a1 | 3752 | { |
3d948cdf | 3753 | AioContext *aio_context; |
24d6bffe | 3754 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3755 | |
370521a1 | 3756 | if (!job) { |
370521a1 SH |
3757 | return; |
3758 | } | |
3d948cdf SH |
3759 | |
3760 | if (!has_force) { | |
3761 | force = false; | |
3762 | } | |
3763 | ||
751ebd76 | 3764 | if (job->user_paused && !force) { |
f231b88d CR |
3765 | error_setg(errp, "The block job for device '%s' is currently paused", |
3766 | device); | |
3d948cdf | 3767 | goto out; |
8acc72a4 | 3768 | } |
370521a1 SH |
3769 | |
3770 | trace_qmp_block_job_cancel(job); | |
3771 | block_job_cancel(job); | |
3d948cdf SH |
3772 | out: |
3773 | aio_context_release(aio_context); | |
370521a1 | 3774 | } |
fb5458cd | 3775 | |
6e37fb81 PB |
3776 | void qmp_block_job_pause(const char *device, Error **errp) |
3777 | { | |
3d948cdf | 3778 | AioContext *aio_context; |
24d6bffe | 3779 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3780 | |
751ebd76 | 3781 | if (!job || job->user_paused) { |
6e37fb81 PB |
3782 | return; |
3783 | } | |
3784 | ||
751ebd76 | 3785 | job->user_paused = true; |
6e37fb81 PB |
3786 | trace_qmp_block_job_pause(job); |
3787 | block_job_pause(job); | |
3d948cdf | 3788 | aio_context_release(aio_context); |
6e37fb81 PB |
3789 | } |
3790 | ||
3791 | void qmp_block_job_resume(const char *device, Error **errp) | |
3792 | { | |
3d948cdf | 3793 | AioContext *aio_context; |
24d6bffe | 3794 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3795 | |
751ebd76 | 3796 | if (!job || !job->user_paused) { |
6e37fb81 PB |
3797 | return; |
3798 | } | |
3799 | ||
751ebd76 | 3800 | job->user_paused = false; |
6e37fb81 PB |
3801 | trace_qmp_block_job_resume(job); |
3802 | block_job_resume(job); | |
3d948cdf | 3803 | aio_context_release(aio_context); |
6e37fb81 PB |
3804 | } |
3805 | ||
aeae883b PB |
3806 | void qmp_block_job_complete(const char *device, Error **errp) |
3807 | { | |
3d948cdf | 3808 | AioContext *aio_context; |
24d6bffe | 3809 | BlockJob *job = find_block_job(device, &aio_context, errp); |
aeae883b PB |
3810 | |
3811 | if (!job) { | |
aeae883b PB |
3812 | return; |
3813 | } | |
3814 | ||
3815 | trace_qmp_block_job_complete(job); | |
3816 | block_job_complete(job, errp); | |
3d948cdf | 3817 | aio_context_release(aio_context); |
aeae883b PB |
3818 | } |
3819 | ||
fa40e656 JC |
3820 | void qmp_change_backing_file(const char *device, |
3821 | const char *image_node_name, | |
3822 | const char *backing_file, | |
3823 | Error **errp) | |
3824 | { | |
a0e8544c | 3825 | BlockBackend *blk; |
fa40e656 | 3826 | BlockDriverState *bs = NULL; |
729962f6 | 3827 | AioContext *aio_context; |
fa40e656 JC |
3828 | BlockDriverState *image_bs = NULL; |
3829 | Error *local_err = NULL; | |
3830 | bool ro; | |
3831 | int open_flags; | |
3832 | int ret; | |
3833 | ||
a0e8544c FZ |
3834 | blk = blk_by_name(device); |
3835 | if (!blk) { | |
75158ebb MA |
3836 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, |
3837 | "Device '%s' not found", device); | |
fa40e656 JC |
3838 | return; |
3839 | } | |
3840 | ||
5433c24f | 3841 | aio_context = blk_get_aio_context(blk); |
729962f6 SH |
3842 | aio_context_acquire(aio_context); |
3843 | ||
5433c24f HR |
3844 | if (!blk_is_available(blk)) { |
3845 | error_setg(errp, "Device '%s' has no medium", device); | |
3846 | goto out; | |
3847 | } | |
3848 | bs = blk_bs(blk); | |
3849 | ||
fa40e656 JC |
3850 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
3851 | if (local_err) { | |
3852 | error_propagate(errp, local_err); | |
729962f6 | 3853 | goto out; |
fa40e656 JC |
3854 | } |
3855 | ||
3856 | if (!image_bs) { | |
3857 | error_setg(errp, "image file not found"); | |
729962f6 | 3858 | goto out; |
fa40e656 JC |
3859 | } |
3860 | ||
3861 | if (bdrv_find_base(image_bs) == image_bs) { | |
3862 | error_setg(errp, "not allowing backing file change on an image " | |
3863 | "without a backing file"); | |
729962f6 | 3864 | goto out; |
fa40e656 JC |
3865 | } |
3866 | ||
3867 | /* even though we are not necessarily operating on bs, we need it to | |
3868 | * determine if block ops are currently prohibited on the chain */ | |
3869 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
729962f6 | 3870 | goto out; |
fa40e656 JC |
3871 | } |
3872 | ||
3873 | /* final sanity check */ | |
3874 | if (!bdrv_chain_contains(bs, image_bs)) { | |
3875 | error_setg(errp, "'%s' and image file are not in the same chain", | |
3876 | device); | |
729962f6 | 3877 | goto out; |
fa40e656 JC |
3878 | } |
3879 | ||
3880 | /* if not r/w, reopen to make r/w */ | |
3881 | open_flags = image_bs->open_flags; | |
3882 | ro = bdrv_is_read_only(image_bs); | |
3883 | ||
3884 | if (ro) { | |
3885 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); | |
3886 | if (local_err) { | |
3887 | error_propagate(errp, local_err); | |
729962f6 | 3888 | goto out; |
fa40e656 JC |
3889 | } |
3890 | } | |
3891 | ||
3892 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
3893 | image_bs->drv ? image_bs->drv->format_name : ""); | |
3894 | ||
3895 | if (ret < 0) { | |
3896 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
3897 | backing_file); | |
3898 | /* don't exit here, so we can try to restore open flags if | |
3899 | * appropriate */ | |
3900 | } | |
3901 | ||
3902 | if (ro) { | |
3903 | bdrv_reopen(image_bs, open_flags, &local_err); | |
3904 | if (local_err) { | |
3905 | error_propagate(errp, local_err); /* will preserve prior errp */ | |
3906 | } | |
3907 | } | |
729962f6 SH |
3908 | |
3909 | out: | |
3910 | aio_context_release(aio_context); | |
fa40e656 JC |
3911 | } |
3912 | ||
abb21ac3 KW |
3913 | void hmp_drive_add_node(Monitor *mon, const char *optstr) |
3914 | { | |
3915 | QemuOpts *opts; | |
3916 | QDict *qdict; | |
3917 | Error *local_err = NULL; | |
3918 | ||
3919 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); | |
3920 | if (!opts) { | |
3921 | return; | |
3922 | } | |
3923 | ||
3924 | qdict = qemu_opts_to_qdict(opts, NULL); | |
3925 | ||
3926 | if (!qdict_get_try_str(qdict, "node-name")) { | |
f8746fb8 | 3927 | QDECREF(qdict); |
abb21ac3 KW |
3928 | error_report("'node-name' needs to be specified"); |
3929 | goto out; | |
3930 | } | |
3931 | ||
3932 | BlockDriverState *bs = bds_tree_init(qdict, &local_err); | |
3933 | if (!bs) { | |
3934 | error_report_err(local_err); | |
3935 | goto out; | |
3936 | } | |
3937 | ||
3938 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); | |
3939 | ||
3940 | out: | |
3941 | qemu_opts_del(opts); | |
3942 | } | |
3943 | ||
d26c9a15 KW |
3944 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
3945 | { | |
3946 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
be4b67bc HR |
3947 | BlockDriverState *bs; |
3948 | BlockBackend *blk = NULL; | |
d26c9a15 KW |
3949 | QObject *obj; |
3950 | QDict *qdict; | |
d26c9a15 KW |
3951 | Error *local_err = NULL; |
3952 | ||
60e19e06 | 3953 | /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with |
d26c9a15 | 3954 | * cache.direct=false instead of silently switching to aio=threads, except |
60e19e06 | 3955 | * when called from drive_new(). |
d26c9a15 KW |
3956 | * |
3957 | * For now, simply forbidding the combination for all drivers will do. */ | |
3958 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
c6e0bd9b KW |
3959 | bool direct = options->has_cache && |
3960 | options->cache->has_direct && | |
3961 | options->cache->direct; | |
3962 | if (!direct) { | |
d26c9a15 KW |
3963 | error_setg(errp, "aio=native requires cache.direct=true"); |
3964 | goto fail; | |
3965 | } | |
3966 | } | |
3967 | ||
51e72bc1 EB |
3968 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), NULL, &options, |
3969 | &local_err); | |
84d18f06 | 3970 | if (local_err) { |
d26c9a15 KW |
3971 | error_propagate(errp, local_err); |
3972 | goto fail; | |
3973 | } | |
3974 | ||
3975 | obj = qmp_output_get_qobject(ov); | |
3976 | qdict = qobject_to_qdict(obj); | |
3977 | ||
3978 | qdict_flatten(qdict); | |
3979 | ||
be4b67bc HR |
3980 | if (options->has_id) { |
3981 | blk = blockdev_init(NULL, qdict, &local_err); | |
3982 | if (local_err) { | |
3983 | error_propagate(errp, local_err); | |
3984 | goto fail; | |
3985 | } | |
3986 | ||
3987 | bs = blk_bs(blk); | |
3988 | } else { | |
be4b67bc HR |
3989 | if (!qdict_get_try_str(qdict, "node-name")) { |
3990 | error_setg(errp, "'id' and/or 'node-name' need to be specified for " | |
3991 | "the root node"); | |
3992 | goto fail; | |
3993 | } | |
3994 | ||
bd745e23 HR |
3995 | bs = bds_tree_init(qdict, errp); |
3996 | if (!bs) { | |
be4b67bc HR |
3997 | goto fail; |
3998 | } | |
9c4218e9 HR |
3999 | |
4000 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); | |
d26c9a15 KW |
4001 | } |
4002 | ||
be4b67bc HR |
4003 | if (bs && bdrv_key_required(bs)) { |
4004 | if (blk) { | |
efaa7c4e | 4005 | monitor_remove_blk(blk); |
be4b67bc HR |
4006 | blk_unref(blk); |
4007 | } else { | |
9c4218e9 | 4008 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
be4b67bc HR |
4009 | bdrv_unref(bs); |
4010 | } | |
8ae8e904 KW |
4011 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
4012 | goto fail; | |
4013 | } | |
4014 | ||
d26c9a15 KW |
4015 | fail: |
4016 | qmp_output_visitor_cleanup(ov); | |
4017 | } | |
4018 | ||
81b936ae AG |
4019 | void qmp_x_blockdev_del(bool has_id, const char *id, |
4020 | bool has_node_name, const char *node_name, Error **errp) | |
4021 | { | |
4022 | AioContext *aio_context; | |
4023 | BlockBackend *blk; | |
4024 | BlockDriverState *bs; | |
4025 | ||
4026 | if (has_id && has_node_name) { | |
4027 | error_setg(errp, "Only one of id and node-name must be specified"); | |
4028 | return; | |
4029 | } else if (!has_id && !has_node_name) { | |
4030 | error_setg(errp, "No block device specified"); | |
4031 | return; | |
4032 | } | |
4033 | ||
4034 | if (has_id) { | |
efaa7c4e | 4035 | /* blk_by_name() never returns a BB that is not owned by the monitor */ |
81b936ae AG |
4036 | blk = blk_by_name(id); |
4037 | if (!blk) { | |
4038 | error_setg(errp, "Cannot find block backend %s", id); | |
4039 | return; | |
4040 | } | |
4041 | if (blk_get_refcnt(blk) > 1) { | |
4042 | error_setg(errp, "Block backend %s is in use", id); | |
4043 | return; | |
4044 | } | |
4045 | bs = blk_bs(blk); | |
4046 | aio_context = blk_get_aio_context(blk); | |
4047 | } else { | |
4048 | bs = bdrv_find_node(node_name); | |
4049 | if (!bs) { | |
4050 | error_setg(errp, "Cannot find node %s", node_name); | |
4051 | return; | |
4052 | } | |
4053 | blk = bs->blk; | |
4054 | if (blk) { | |
4055 | error_setg(errp, "Node %s is in use by %s", | |
4056 | node_name, blk_name(blk)); | |
4057 | return; | |
4058 | } | |
4059 | aio_context = bdrv_get_aio_context(bs); | |
4060 | } | |
4061 | ||
4062 | aio_context_acquire(aio_context); | |
4063 | ||
4064 | if (bs) { | |
4065 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { | |
4066 | goto out; | |
4067 | } | |
4068 | ||
9c4218e9 HR |
4069 | if (!blk && !bs->monitor_list.tqe_prev) { |
4070 | error_setg(errp, "Node %s is not owned by the monitor", | |
4071 | bs->node_name); | |
4072 | goto out; | |
4073 | } | |
4074 | ||
4075 | if (bs->refcnt > 1) { | |
81b936ae AG |
4076 | error_setg(errp, "Block device %s is in use", |
4077 | bdrv_get_device_or_node_name(bs)); | |
4078 | goto out; | |
4079 | } | |
4080 | } | |
4081 | ||
4082 | if (blk) { | |
efaa7c4e | 4083 | monitor_remove_blk(blk); |
81b936ae AG |
4084 | blk_unref(blk); |
4085 | } else { | |
9c4218e9 | 4086 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
81b936ae AG |
4087 | bdrv_unref(bs); |
4088 | } | |
4089 | ||
4090 | out: | |
4091 | aio_context_release(aio_context); | |
4092 | } | |
4093 | ||
fea68bb6 | 4094 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
fb5458cd | 4095 | { |
fea68bb6 MA |
4096 | BlockJobInfoList *head = NULL, **p_next = &head; |
4097 | BlockDriverState *bs; | |
fb5458cd | 4098 | |
fea68bb6 | 4099 | for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) { |
69691e72 SH |
4100 | AioContext *aio_context = bdrv_get_aio_context(bs); |
4101 | ||
4102 | aio_context_acquire(aio_context); | |
4103 | ||
fea68bb6 MA |
4104 | if (bs->job) { |
4105 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); | |
4106 | elem->value = block_job_query(bs->job); | |
4107 | *p_next = elem; | |
4108 | p_next = &elem->next; | |
4109 | } | |
69691e72 SH |
4110 | |
4111 | aio_context_release(aio_context); | |
fb5458cd | 4112 | } |
fb5458cd | 4113 | |
fea68bb6 | 4114 | return head; |
fb5458cd | 4115 | } |
4d454574 | 4116 | |
0006383e | 4117 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 4118 | .name = "drive", |
0006383e | 4119 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
4120 | .desc = { |
4121 | { | |
4d454574 PB |
4122 | .name = "snapshot", |
4123 | .type = QEMU_OPT_BOOL, | |
4124 | .help = "enable/disable snapshot mode", | |
a9384aff PB |
4125 | },{ |
4126 | .name = "discard", | |
4127 | .type = QEMU_OPT_STRING, | |
4128 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 PB |
4129 | },{ |
4130 | .name = "aio", | |
4131 | .type = QEMU_OPT_STRING, | |
4132 | .help = "host AIO implementation (threads, native)", | |
4133 | },{ | |
4134 | .name = "format", | |
4135 | .type = QEMU_OPT_STRING, | |
4136 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
4137 | },{ |
4138 | .name = "rerror", | |
4139 | .type = QEMU_OPT_STRING, | |
4140 | .help = "read error action", | |
4141 | },{ | |
4142 | .name = "werror", | |
4143 | .type = QEMU_OPT_STRING, | |
4144 | .help = "write error action", | |
4d454574 | 4145 | },{ |
0f227a94 | 4146 | .name = "read-only", |
4d454574 PB |
4147 | .type = QEMU_OPT_BOOL, |
4148 | .help = "open drive file as read-only", | |
4149 | },{ | |
57975222 | 4150 | .name = "throttling.iops-total", |
4d454574 PB |
4151 | .type = QEMU_OPT_NUMBER, |
4152 | .help = "limit total I/O operations per second", | |
4153 | },{ | |
57975222 | 4154 | .name = "throttling.iops-read", |
4d454574 PB |
4155 | .type = QEMU_OPT_NUMBER, |
4156 | .help = "limit read operations per second", | |
4157 | },{ | |
57975222 | 4158 | .name = "throttling.iops-write", |
4d454574 PB |
4159 | .type = QEMU_OPT_NUMBER, |
4160 | .help = "limit write operations per second", | |
4161 | },{ | |
57975222 | 4162 | .name = "throttling.bps-total", |
4d454574 PB |
4163 | .type = QEMU_OPT_NUMBER, |
4164 | .help = "limit total bytes per second", | |
4165 | },{ | |
57975222 | 4166 | .name = "throttling.bps-read", |
4d454574 PB |
4167 | .type = QEMU_OPT_NUMBER, |
4168 | .help = "limit read bytes per second", | |
4169 | },{ | |
57975222 | 4170 | .name = "throttling.bps-write", |
4d454574 PB |
4171 | .type = QEMU_OPT_NUMBER, |
4172 | .help = "limit write bytes per second", | |
3e9fab69 BC |
4173 | },{ |
4174 | .name = "throttling.iops-total-max", | |
4175 | .type = QEMU_OPT_NUMBER, | |
4176 | .help = "I/O operations burst", | |
4177 | },{ | |
4178 | .name = "throttling.iops-read-max", | |
4179 | .type = QEMU_OPT_NUMBER, | |
4180 | .help = "I/O operations read burst", | |
4181 | },{ | |
4182 | .name = "throttling.iops-write-max", | |
4183 | .type = QEMU_OPT_NUMBER, | |
4184 | .help = "I/O operations write burst", | |
4185 | },{ | |
4186 | .name = "throttling.bps-total-max", | |
4187 | .type = QEMU_OPT_NUMBER, | |
4188 | .help = "total bytes burst", | |
4189 | },{ | |
4190 | .name = "throttling.bps-read-max", | |
4191 | .type = QEMU_OPT_NUMBER, | |
4192 | .help = "total bytes read burst", | |
4193 | },{ | |
4194 | .name = "throttling.bps-write-max", | |
4195 | .type = QEMU_OPT_NUMBER, | |
4196 | .help = "total bytes write burst", | |
8a0fc18d AG |
4197 | },{ |
4198 | .name = "throttling.iops-total-max-length", | |
4199 | .type = QEMU_OPT_NUMBER, | |
4200 | .help = "length of the iops-total-max burst period, in seconds", | |
4201 | },{ | |
4202 | .name = "throttling.iops-read-max-length", | |
4203 | .type = QEMU_OPT_NUMBER, | |
4204 | .help = "length of the iops-read-max burst period, in seconds", | |
4205 | },{ | |
4206 | .name = "throttling.iops-write-max-length", | |
4207 | .type = QEMU_OPT_NUMBER, | |
4208 | .help = "length of the iops-write-max burst period, in seconds", | |
4209 | },{ | |
4210 | .name = "throttling.bps-total-max-length", | |
4211 | .type = QEMU_OPT_NUMBER, | |
4212 | .help = "length of the bps-total-max burst period, in seconds", | |
4213 | },{ | |
4214 | .name = "throttling.bps-read-max-length", | |
4215 | .type = QEMU_OPT_NUMBER, | |
4216 | .help = "length of the bps-read-max burst period, in seconds", | |
4217 | },{ | |
4218 | .name = "throttling.bps-write-max-length", | |
4219 | .type = QEMU_OPT_NUMBER, | |
4220 | .help = "length of the bps-write-max burst period, in seconds", | |
2024c1df BC |
4221 | },{ |
4222 | .name = "throttling.iops-size", | |
4223 | .type = QEMU_OPT_NUMBER, | |
4224 | .help = "when limiting by iops max size of an I/O in bytes", | |
76f4afb4 AG |
4225 | },{ |
4226 | .name = "throttling.group", | |
4227 | .type = QEMU_OPT_STRING, | |
4228 | .help = "name of the block throttling group", | |
4d454574 PB |
4229 | },{ |
4230 | .name = "copy-on-read", | |
4231 | .type = QEMU_OPT_BOOL, | |
4232 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
4233 | },{ |
4234 | .name = "detect-zeroes", | |
4235 | .type = QEMU_OPT_STRING, | |
4236 | .help = "try to optimize zero writes (off, on, unmap)", | |
362e9299 AG |
4237 | },{ |
4238 | .name = "stats-account-invalid", | |
4239 | .type = QEMU_OPT_BOOL, | |
4240 | .help = "whether to account for invalid I/O operations " | |
4241 | "in the statistics", | |
4242 | },{ | |
4243 | .name = "stats-account-failed", | |
4244 | .type = QEMU_OPT_BOOL, | |
4245 | .help = "whether to account for failed I/O operations " | |
4246 | "in the statistics", | |
4d454574 PB |
4247 | }, |
4248 | { /* end of list */ } | |
4249 | }, | |
4250 | }; | |
0006383e | 4251 | |
bd745e23 HR |
4252 | static QemuOptsList qemu_root_bds_opts = { |
4253 | .name = "root-bds", | |
23f7fcb2 | 4254 | .head = QTAILQ_HEAD_INITIALIZER(qemu_root_bds_opts.head), |
bd745e23 HR |
4255 | .desc = { |
4256 | { | |
4257 | .name = "discard", | |
4258 | .type = QEMU_OPT_STRING, | |
4259 | .help = "discard operation (ignore/off, unmap/on)", | |
bd745e23 HR |
4260 | },{ |
4261 | .name = "aio", | |
4262 | .type = QEMU_OPT_STRING, | |
4263 | .help = "host AIO implementation (threads, native)", | |
4264 | },{ | |
4265 | .name = "read-only", | |
4266 | .type = QEMU_OPT_BOOL, | |
4267 | .help = "open drive file as read-only", | |
4268 | },{ | |
4269 | .name = "copy-on-read", | |
4270 | .type = QEMU_OPT_BOOL, | |
4271 | .help = "copy read data from backing file into image file", | |
4272 | },{ | |
4273 | .name = "detect-zeroes", | |
4274 | .type = QEMU_OPT_STRING, | |
4275 | .help = "try to optimize zero writes (off, on, unmap)", | |
4276 | }, | |
4277 | { /* end of list */ } | |
4278 | }, | |
4279 | }; | |
4280 | ||
0006383e KW |
4281 | QemuOptsList qemu_drive_opts = { |
4282 | .name = "drive", | |
4283 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
4284 | .desc = { | |
492fdc6f KW |
4285 | /* |
4286 | * no elements => accept any params | |
4287 | * validation will happen later | |
4288 | */ | |
0006383e KW |
4289 | { /* end of list */ } |
4290 | }, | |
4291 | }; |