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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" |
b3db211f | 46 | #include "qapi/qobject-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" |
0ab8ed18 | 51 | #include "block/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 | ||
b33945cf KW |
59 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
60 | bool force, Error **errp); | |
bf18bee5 | 61 | |
1960966d MA |
62 | static const char *const if_name[IF_COUNT] = { |
63 | [IF_NONE] = "none", | |
64 | [IF_IDE] = "ide", | |
65 | [IF_SCSI] = "scsi", | |
66 | [IF_FLOPPY] = "floppy", | |
67 | [IF_PFLASH] = "pflash", | |
68 | [IF_MTD] = "mtd", | |
69 | [IF_SD] = "sd", | |
70 | [IF_VIRTIO] = "virtio", | |
71 | [IF_XEN] = "xen", | |
72 | }; | |
73 | ||
21dff8cf | 74 | static int if_max_devs[IF_COUNT] = { |
27d6bf40 MA |
75 | /* |
76 | * Do not change these numbers! They govern how drive option | |
77 | * index maps to unit and bus. That mapping is ABI. | |
78 | * | |
547cb157 | 79 | * All controllers used to implement if=T drives need to support |
27d6bf40 MA |
80 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. |
81 | * Otherwise, some index values map to "impossible" bus, unit | |
82 | * values. | |
83 | * | |
84 | * For instance, if you change [IF_SCSI] to 255, -drive | |
85 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
86 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
87 | * the drive can't be set up. Regression. | |
88 | */ | |
89 | [IF_IDE] = 2, | |
90 | [IF_SCSI] = 7, | |
1960966d MA |
91 | }; |
92 | ||
21dff8cf JS |
93 | /** |
94 | * Boards may call this to offer board-by-board overrides | |
95 | * of the default, global values. | |
96 | */ | |
97 | void override_max_devs(BlockInterfaceType type, int max_devs) | |
98 | { | |
18e46a03 | 99 | BlockBackend *blk; |
21dff8cf JS |
100 | DriveInfo *dinfo; |
101 | ||
102 | if (max_devs <= 0) { | |
103 | return; | |
104 | } | |
105 | ||
18e46a03 MA |
106 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
107 | dinfo = blk_legacy_dinfo(blk); | |
21dff8cf JS |
108 | if (dinfo->type == type) { |
109 | fprintf(stderr, "Cannot override units-per-bus property of" | |
110 | " the %s interface, because a drive of that type has" | |
111 | " already been added.\n", if_name[type]); | |
112 | g_assert_not_reached(); | |
113 | } | |
114 | } | |
115 | ||
116 | if_max_devs[type] = max_devs; | |
117 | } | |
118 | ||
14bafc54 MA |
119 | /* |
120 | * We automatically delete the drive when a device using it gets | |
121 | * unplugged. Questionable feature, but we can't just drop it. | |
122 | * Device models call blockdev_mark_auto_del() to schedule the | |
123 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
124 | * when deletion is actually safe. | |
125 | */ | |
4be74634 | 126 | void blockdev_mark_auto_del(BlockBackend *blk) |
14bafc54 | 127 | { |
18e46a03 | 128 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
4be74634 | 129 | BlockDriverState *bs = blk_bs(blk); |
91fddb0d | 130 | AioContext *aio_context; |
14bafc54 | 131 | |
26f8b3a8 | 132 | if (!dinfo) { |
2d246f01 KW |
133 | return; |
134 | } | |
135 | ||
5433c24f HR |
136 | if (bs) { |
137 | aio_context = bdrv_get_aio_context(bs); | |
138 | aio_context_acquire(aio_context); | |
91fddb0d | 139 | |
5433c24f HR |
140 | if (bs->job) { |
141 | block_job_cancel(bs->job); | |
142 | } | |
91fddb0d | 143 | |
5433c24f HR |
144 | aio_context_release(aio_context); |
145 | } | |
91fddb0d | 146 | |
26f8b3a8 | 147 | dinfo->auto_del = 1; |
14bafc54 MA |
148 | } |
149 | ||
4be74634 | 150 | void blockdev_auto_del(BlockBackend *blk) |
14bafc54 | 151 | { |
18e46a03 | 152 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
14bafc54 | 153 | |
0fc0f1fa | 154 | if (dinfo && dinfo->auto_del) { |
efaa7c4e | 155 | monitor_remove_blk(blk); |
b9fe8a7a | 156 | blk_unref(blk); |
14bafc54 MA |
157 | } |
158 | } | |
159 | ||
d8f94e1b JS |
160 | /** |
161 | * Returns the current mapping of how many units per bus | |
162 | * a particular interface can support. | |
163 | * | |
164 | * A positive integer indicates n units per bus. | |
165 | * 0 implies the mapping has not been established. | |
166 | * -1 indicates an invalid BlockInterfaceType was given. | |
167 | */ | |
168 | int drive_get_max_devs(BlockInterfaceType type) | |
169 | { | |
170 | if (type >= IF_IDE && type < IF_COUNT) { | |
171 | return if_max_devs[type]; | |
172 | } | |
173 | ||
174 | return -1; | |
175 | } | |
176 | ||
505a7fb1 MA |
177 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
178 | { | |
179 | int max_devs = if_max_devs[type]; | |
180 | return max_devs ? index / max_devs : 0; | |
181 | } | |
182 | ||
183 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
184 | { | |
185 | int max_devs = if_max_devs[type]; | |
186 | return max_devs ? index % max_devs : index; | |
187 | } | |
188 | ||
2292ddae MA |
189 | QemuOpts *drive_def(const char *optstr) |
190 | { | |
70b94331 | 191 | return qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); |
2292ddae MA |
192 | } |
193 | ||
194 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 195 | const char *optstr) |
666daa68 | 196 | { |
666daa68 MA |
197 | QemuOpts *opts; |
198 | ||
2292ddae | 199 | opts = drive_def(optstr); |
666daa68 MA |
200 | if (!opts) { |
201 | return NULL; | |
202 | } | |
2292ddae | 203 | if (type != IF_DEFAULT) { |
f43e47db | 204 | qemu_opt_set(opts, "if", if_name[type], &error_abort); |
2292ddae MA |
205 | } |
206 | if (index >= 0) { | |
a8b18f8f | 207 | qemu_opt_set_number(opts, "index", index, &error_abort); |
2292ddae | 208 | } |
666daa68 | 209 | if (file) |
f43e47db | 210 | qemu_opt_set(opts, "file", file, &error_abort); |
666daa68 MA |
211 | return opts; |
212 | } | |
213 | ||
214 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
215 | { | |
18e46a03 | 216 | BlockBackend *blk; |
666daa68 MA |
217 | DriveInfo *dinfo; |
218 | ||
18e46a03 MA |
219 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
220 | dinfo = blk_legacy_dinfo(blk); | |
221 | if (dinfo && dinfo->type == type | |
222 | && dinfo->bus == bus && dinfo->unit == unit) { | |
666daa68 | 223 | return dinfo; |
18e46a03 | 224 | } |
666daa68 MA |
225 | } |
226 | ||
227 | return NULL; | |
228 | } | |
229 | ||
720b8dc0 | 230 | void drive_check_orphaned(void) |
a66c9dc7 | 231 | { |
18e46a03 | 232 | BlockBackend *blk; |
a66c9dc7 | 233 | DriveInfo *dinfo; |
664cc623 | 234 | Location loc; |
720b8dc0 | 235 | bool orphans = false; |
a66c9dc7 | 236 | |
18e46a03 MA |
237 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
238 | dinfo = blk_legacy_dinfo(blk); | |
a7f53e26 | 239 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
a66c9dc7 | 240 | dinfo->type != IF_NONE) { |
664cc623 MA |
241 | loc_push_none(&loc); |
242 | qemu_opts_loc_restore(dinfo->opts); | |
720b8dc0 | 243 | error_report("machine type does not support" |
664cc623 MA |
244 | " if=%s,bus=%d,unit=%d", |
245 | if_name[dinfo->type], dinfo->bus, dinfo->unit); | |
246 | loc_pop(&loc); | |
720b8dc0 | 247 | orphans = true; |
a66c9dc7 JS |
248 | } |
249 | } | |
250 | ||
720b8dc0 MA |
251 | if (orphans) { |
252 | exit(1); | |
253 | } | |
a66c9dc7 JS |
254 | } |
255 | ||
f1bd51ac MA |
256 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
257 | { | |
258 | return drive_get(type, | |
259 | drive_index_to_bus_id(type, index), | |
260 | drive_index_to_unit_id(type, index)); | |
261 | } | |
262 | ||
666daa68 MA |
263 | int drive_get_max_bus(BlockInterfaceType type) |
264 | { | |
265 | int max_bus; | |
18e46a03 | 266 | BlockBackend *blk; |
666daa68 MA |
267 | DriveInfo *dinfo; |
268 | ||
269 | max_bus = -1; | |
18e46a03 MA |
270 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
271 | dinfo = blk_legacy_dinfo(blk); | |
272 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { | |
666daa68 | 273 | max_bus = dinfo->bus; |
18e46a03 | 274 | } |
666daa68 MA |
275 | } |
276 | return max_bus; | |
277 | } | |
278 | ||
13839974 MA |
279 | /* Get a block device. This should only be used for single-drive devices |
280 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
281 | appropriate bus. */ | |
282 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
283 | { | |
284 | static int next_block_unit[IF_COUNT]; | |
285 | ||
286 | return drive_get(type, 0, next_block_unit[type]++); | |
287 | } | |
288 | ||
666daa68 MA |
289 | static void bdrv_format_print(void *opaque, const char *name) |
290 | { | |
807105a7 | 291 | error_printf(" %s", name); |
666daa68 MA |
292 | } |
293 | ||
aa398a5c SH |
294 | typedef struct { |
295 | QEMUBH *bh; | |
fa510ebf FZ |
296 | BlockDriverState *bs; |
297 | } BDRVPutRefBH; | |
aa398a5c | 298 | |
b681072d | 299 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
300 | { |
301 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 302 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 303 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 304 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 305 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 306 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 307 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 308 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 309 | } else { |
b681072d KW |
310 | error_setg(errp, "'%s' invalid %s error action", |
311 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
312 | return -1; |
313 | } | |
314 | } | |
315 | ||
40119eff AG |
316 | static bool parse_stats_intervals(BlockAcctStats *stats, QList *intervals, |
317 | Error **errp) | |
318 | { | |
319 | const QListEntry *entry; | |
320 | for (entry = qlist_first(intervals); entry; entry = qlist_next(entry)) { | |
321 | switch (qobject_type(entry->value)) { | |
322 | ||
323 | case QTYPE_QSTRING: { | |
324 | unsigned long long length; | |
325 | const char *str = qstring_get_str(qobject_to_qstring(entry->value)); | |
326 | if (parse_uint_full(str, &length, 10) == 0 && | |
327 | length > 0 && length <= UINT_MAX) { | |
328 | block_acct_add_interval(stats, (unsigned) length); | |
329 | } else { | |
330 | error_setg(errp, "Invalid interval length: %s", str); | |
331 | return false; | |
332 | } | |
333 | break; | |
334 | } | |
335 | ||
336 | case QTYPE_QINT: { | |
337 | int64_t length = qint_get_int(qobject_to_qint(entry->value)); | |
338 | if (length > 0 && length <= UINT_MAX) { | |
339 | block_acct_add_interval(stats, (unsigned) length); | |
340 | } else { | |
341 | error_setg(errp, "Invalid interval length: %" PRId64, length); | |
342 | return false; | |
343 | } | |
344 | break; | |
345 | } | |
346 | ||
347 | default: | |
348 | error_setg(errp, "The specification of stats-intervals is invalid"); | |
349 | return false; | |
350 | } | |
351 | } | |
352 | return true; | |
353 | } | |
354 | ||
33cb7dc8 KW |
355 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
356 | ||
fbf8175e HR |
357 | /* All parameters but @opts are optional and may be set to NULL. */ |
358 | static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags, | |
359 | const char **throttling_group, ThrottleConfig *throttle_cfg, | |
360 | BlockdevDetectZeroesOptions *detect_zeroes, Error **errp) | |
361 | { | |
fbf8175e HR |
362 | Error *local_error = NULL; |
363 | const char *aio; | |
364 | ||
365 | if (bdrv_flags) { | |
fbf8175e HR |
366 | if (qemu_opt_get_bool(opts, "copy-on-read", false)) { |
367 | *bdrv_flags |= BDRV_O_COPY_ON_READ; | |
368 | } | |
369 | ||
fbf8175e HR |
370 | if ((aio = qemu_opt_get(opts, "aio")) != NULL) { |
371 | if (!strcmp(aio, "native")) { | |
372 | *bdrv_flags |= BDRV_O_NATIVE_AIO; | |
373 | } else if (!strcmp(aio, "threads")) { | |
374 | /* this is the default */ | |
375 | } else { | |
376 | error_setg(errp, "invalid aio option"); | |
377 | return; | |
378 | } | |
379 | } | |
380 | } | |
381 | ||
382 | /* disk I/O throttling */ | |
383 | if (throttling_group) { | |
384 | *throttling_group = qemu_opt_get(opts, "throttling.group"); | |
385 | } | |
386 | ||
387 | if (throttle_cfg) { | |
1588ab5d | 388 | throttle_config_init(throttle_cfg); |
fbf8175e HR |
389 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].avg = |
390 | qemu_opt_get_number(opts, "throttling.bps-total", 0); | |
391 | throttle_cfg->buckets[THROTTLE_BPS_READ].avg = | |
392 | qemu_opt_get_number(opts, "throttling.bps-read", 0); | |
393 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].avg = | |
394 | qemu_opt_get_number(opts, "throttling.bps-write", 0); | |
395 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].avg = | |
396 | qemu_opt_get_number(opts, "throttling.iops-total", 0); | |
397 | throttle_cfg->buckets[THROTTLE_OPS_READ].avg = | |
398 | qemu_opt_get_number(opts, "throttling.iops-read", 0); | |
399 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].avg = | |
400 | qemu_opt_get_number(opts, "throttling.iops-write", 0); | |
401 | ||
402 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].max = | |
403 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
404 | throttle_cfg->buckets[THROTTLE_BPS_READ].max = | |
405 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
406 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].max = | |
407 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
408 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].max = | |
409 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
410 | throttle_cfg->buckets[THROTTLE_OPS_READ].max = | |
411 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
412 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].max = | |
413 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
414 | ||
8a0fc18d AG |
415 | throttle_cfg->buckets[THROTTLE_BPS_TOTAL].burst_length = |
416 | qemu_opt_get_number(opts, "throttling.bps-total-max-length", 1); | |
417 | throttle_cfg->buckets[THROTTLE_BPS_READ].burst_length = | |
418 | qemu_opt_get_number(opts, "throttling.bps-read-max-length", 1); | |
419 | throttle_cfg->buckets[THROTTLE_BPS_WRITE].burst_length = | |
420 | qemu_opt_get_number(opts, "throttling.bps-write-max-length", 1); | |
421 | throttle_cfg->buckets[THROTTLE_OPS_TOTAL].burst_length = | |
422 | qemu_opt_get_number(opts, "throttling.iops-total-max-length", 1); | |
423 | throttle_cfg->buckets[THROTTLE_OPS_READ].burst_length = | |
424 | qemu_opt_get_number(opts, "throttling.iops-read-max-length", 1); | |
425 | throttle_cfg->buckets[THROTTLE_OPS_WRITE].burst_length = | |
426 | qemu_opt_get_number(opts, "throttling.iops-write-max-length", 1); | |
427 | ||
fbf8175e HR |
428 | throttle_cfg->op_size = |
429 | qemu_opt_get_number(opts, "throttling.iops-size", 0); | |
430 | ||
d5851089 | 431 | if (!throttle_is_valid(throttle_cfg, errp)) { |
fbf8175e HR |
432 | return; |
433 | } | |
434 | } | |
435 | ||
436 | if (detect_zeroes) { | |
437 | *detect_zeroes = | |
438 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, | |
439 | qemu_opt_get(opts, "detect-zeroes"), | |
7fb1cf16 | 440 | BLOCKDEV_DETECT_ZEROES_OPTIONS__MAX, |
fbf8175e HR |
441 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, |
442 | &local_error); | |
443 | if (local_error) { | |
444 | error_propagate(errp, local_error); | |
445 | return; | |
446 | } | |
fbf8175e HR |
447 | } |
448 | } | |
449 | ||
f298d071 | 450 | /* Takes the ownership of bs_opts */ |
18e46a03 MA |
451 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
452 | Error **errp) | |
666daa68 MA |
453 | { |
454 | const char *buf; | |
666daa68 MA |
455 | int bdrv_flags = 0; |
456 | int on_read_error, on_write_error; | |
362e9299 | 457 | bool account_invalid, account_failed; |
f87a0e29 | 458 | bool writethrough, read_only; |
26f54e9a | 459 | BlockBackend *blk; |
a0f1eab1 | 460 | BlockDriverState *bs; |
cc0681c4 | 461 | ThrottleConfig cfg; |
666daa68 | 462 | int snapshot = 0; |
c546194f | 463 | Error *error = NULL; |
0006383e | 464 | QemuOpts *opts; |
40119eff AG |
465 | QDict *interval_dict = NULL; |
466 | QList *interval_list = NULL; | |
0006383e | 467 | const char *id; |
fbf8175e HR |
468 | BlockdevDetectZeroesOptions detect_zeroes = |
469 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF; | |
470 | const char *throttling_group = NULL; | |
666daa68 | 471 | |
f298d071 KW |
472 | /* Check common options by copying from bs_opts to opts, all other options |
473 | * stay in bs_opts for processing by bdrv_open(). */ | |
474 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 475 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 476 | if (error) { |
b681072d | 477 | error_propagate(errp, error); |
6376f952 | 478 | goto err_no_opts; |
0006383e KW |
479 | } |
480 | ||
0006383e | 481 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 482 | if (error) { |
b681072d | 483 | error_propagate(errp, error); |
ec9c10d2 | 484 | goto early_err; |
0006383e KW |
485 | } |
486 | ||
487 | if (id) { | |
488 | qdict_del(bs_opts, "id"); | |
489 | } | |
490 | ||
666daa68 | 491 | /* extract parameters */ |
666daa68 | 492 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
666daa68 | 493 | |
362e9299 AG |
494 | account_invalid = qemu_opt_get_bool(opts, "stats-account-invalid", true); |
495 | account_failed = qemu_opt_get_bool(opts, "stats-account-failed", true); | |
496 | ||
e4b24b49 KW |
497 | writethrough = !qemu_opt_get_bool(opts, BDRV_OPT_CACHE_WB, true); |
498 | ||
ff356ee4 AG |
499 | id = qemu_opts_id(opts); |
500 | ||
40119eff AG |
501 | qdict_extract_subqdict(bs_opts, &interval_dict, "stats-intervals."); |
502 | qdict_array_split(interval_dict, &interval_list); | |
503 | ||
504 | if (qdict_size(interval_dict) != 0) { | |
505 | error_setg(errp, "Invalid option stats-intervals.%s", | |
506 | qdict_first(interval_dict)->key); | |
507 | goto early_err; | |
508 | } | |
2be5506f | 509 | |
fbf8175e HR |
510 | extract_common_blockdev_options(opts, &bdrv_flags, &throttling_group, &cfg, |
511 | &detect_zeroes, &error); | |
512 | if (error) { | |
513 | error_propagate(errp, error); | |
514 | goto early_err; | |
666daa68 | 515 | } |
666daa68 MA |
516 | |
517 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
518 | if (is_help_option(buf)) { |
519 | error_printf("Supported formats:"); | |
520 | bdrv_iterate_format(bdrv_format_print, NULL); | |
521 | error_printf("\n"); | |
ec9c10d2 | 522 | goto early_err; |
666daa68 | 523 | } |
74fe54f2 | 524 | |
e4342ce5 HR |
525 | if (qdict_haskey(bs_opts, "driver")) { |
526 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); | |
ec9c10d2 | 527 | goto early_err; |
6db5f5d6 | 528 | } |
e4342ce5 | 529 | qdict_put(bs_opts, "driver", qstring_from_str(buf)); |
666daa68 MA |
530 | } |
531 | ||
92aa5c6d | 532 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 533 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 534 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 535 | if (error) { |
b681072d | 536 | error_propagate(errp, error); |
ec9c10d2 | 537 | goto early_err; |
666daa68 MA |
538 | } |
539 | } | |
540 | ||
92aa5c6d | 541 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 542 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 543 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 544 | if (error) { |
b681072d | 545 | error_propagate(errp, error); |
ec9c10d2 | 546 | goto early_err; |
666daa68 MA |
547 | } |
548 | } | |
549 | ||
5ec18f8c | 550 | if (snapshot) { |
91a097e7 | 551 | bdrv_flags |= BDRV_O_SNAPSHOT; |
5ec18f8c HR |
552 | } |
553 | ||
f87a0e29 AG |
554 | read_only = qemu_opt_get_bool(opts, BDRV_OPT_READ_ONLY, false); |
555 | ||
326642bc | 556 | /* init */ |
39c4ae94 | 557 | if ((!file || !*file) && !qdict_size(bs_opts)) { |
5ec18f8c HR |
558 | BlockBackendRootState *blk_rs; |
559 | ||
109525ad | 560 | blk = blk_new(); |
5ec18f8c HR |
561 | blk_rs = blk_get_root_state(blk); |
562 | blk_rs->open_flags = bdrv_flags; | |
f87a0e29 | 563 | blk_rs->read_only = read_only; |
5ec18f8c HR |
564 | blk_rs->detect_zeroes = detect_zeroes; |
565 | ||
e4342ce5 HR |
566 | QDECREF(bs_opts); |
567 | } else { | |
568 | if (file && !*file) { | |
c2ad1b0c | 569 | file = NULL; |
c2ad1b0c | 570 | } |
666daa68 | 571 | |
91a097e7 KW |
572 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
573 | * with other callers) rather than what we want as the real defaults. | |
574 | * Apply the defaults here instead. */ | |
91a097e7 KW |
575 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
576 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
f87a0e29 AG |
577 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, |
578 | read_only ? "on" : "off"); | |
72e775c7 | 579 | assert((bdrv_flags & BDRV_O_CACHE_MASK) == 0); |
91a097e7 | 580 | |
12d5ee3a KW |
581 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
582 | bdrv_flags |= BDRV_O_INACTIVE; | |
583 | } | |
584 | ||
efaa7c4e | 585 | blk = blk_new_open(file, NULL, bs_opts, bdrv_flags, errp); |
e4342ce5 HR |
586 | if (!blk) { |
587 | goto err_no_bs_opts; | |
588 | } | |
589 | bs = blk_bs(blk); | |
ed9d4205 | 590 | |
5ec18f8c | 591 | bs->detect_zeroes = detect_zeroes; |
666daa68 | 592 | |
5ec18f8c HR |
593 | if (bdrv_key_required(bs)) { |
594 | autostart = 0; | |
76f4afb4 | 595 | } |
362e9299 AG |
596 | |
597 | block_acct_init(blk_get_stats(blk), account_invalid, account_failed); | |
2be5506f | 598 | |
40119eff AG |
599 | if (!parse_stats_intervals(blk_get_stats(blk), interval_list, errp)) { |
600 | blk_unref(blk); | |
601 | blk = NULL; | |
602 | goto err_no_bs_opts; | |
2be5506f | 603 | } |
666daa68 MA |
604 | } |
605 | ||
7ca7f0f6 KW |
606 | /* disk I/O throttling */ |
607 | if (throttle_enabled(&cfg)) { | |
608 | if (!throttling_group) { | |
ff356ee4 | 609 | throttling_group = id; |
7ca7f0f6 KW |
610 | } |
611 | blk_io_limits_enable(blk, throttling_group); | |
612 | blk_set_io_limits(blk, &cfg); | |
613 | } | |
614 | ||
e4b24b49 | 615 | blk_set_enable_write_cache(blk, !writethrough); |
5ec18f8c | 616 | blk_set_on_error(blk, on_read_error, on_write_error); |
0006383e | 617 | |
ff356ee4 | 618 | if (!monitor_add_blk(blk, id, errp)) { |
efaa7c4e HR |
619 | blk_unref(blk); |
620 | blk = NULL; | |
621 | goto err_no_bs_opts; | |
622 | } | |
623 | ||
e4342ce5 | 624 | err_no_bs_opts: |
0006383e | 625 | qemu_opts_del(opts); |
40119eff AG |
626 | QDECREF(interval_dict); |
627 | QDECREF(interval_list); | |
18e46a03 | 628 | return blk; |
a9ae2bff | 629 | |
ec9c10d2 | 630 | early_err: |
ec9c10d2 | 631 | qemu_opts_del(opts); |
40119eff AG |
632 | QDECREF(interval_dict); |
633 | QDECREF(interval_list); | |
6376f952 MA |
634 | err_no_opts: |
635 | QDECREF(bs_opts); | |
a9ae2bff | 636 | return NULL; |
666daa68 MA |
637 | } |
638 | ||
bd745e23 HR |
639 | /* Takes the ownership of bs_opts */ |
640 | static BlockDriverState *bds_tree_init(QDict *bs_opts, Error **errp) | |
641 | { | |
bd745e23 HR |
642 | int bdrv_flags = 0; |
643 | ||
a81d6164 KW |
644 | /* bdrv_open() defaults to the values in bdrv_flags (for compatibility |
645 | * with other callers) rather than what we want as the real defaults. | |
646 | * Apply the defaults here instead. */ | |
a81d6164 KW |
647 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_DIRECT, "off"); |
648 | qdict_set_default_str(bs_opts, BDRV_OPT_CACHE_NO_FLUSH, "off"); | |
f87a0e29 | 649 | qdict_set_default_str(bs_opts, BDRV_OPT_READ_ONLY, "off"); |
a81d6164 | 650 | |
12d5ee3a KW |
651 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
652 | bdrv_flags |= BDRV_O_INACTIVE; | |
653 | } | |
654 | ||
74e1ae7c | 655 | return bdrv_open(NULL, NULL, bs_opts, bdrv_flags, errp); |
bd745e23 HR |
656 | } |
657 | ||
9c4218e9 HR |
658 | void blockdev_close_all_bdrv_states(void) |
659 | { | |
660 | BlockDriverState *bs, *next_bs; | |
661 | ||
662 | QTAILQ_FOREACH_SAFE(bs, &monitor_bdrv_states, monitor_list, next_bs) { | |
663 | AioContext *ctx = bdrv_get_aio_context(bs); | |
664 | ||
665 | aio_context_acquire(ctx); | |
666 | bdrv_unref(bs); | |
667 | aio_context_release(ctx); | |
668 | } | |
669 | } | |
670 | ||
262b4e8f HR |
671 | /* Iterates over the list of monitor-owned BlockDriverStates */ |
672 | BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs) | |
673 | { | |
674 | return bs ? QTAILQ_NEXT(bs, monitor_list) | |
675 | : QTAILQ_FIRST(&monitor_bdrv_states); | |
676 | } | |
677 | ||
5abbf0ee KW |
678 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
679 | Error **errp) | |
57975222 KW |
680 | { |
681 | const char *value; | |
682 | ||
683 | value = qemu_opt_get(opts, from); | |
684 | if (value) { | |
5abbf0ee KW |
685 | if (qemu_opt_find(opts, to)) { |
686 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " | |
687 | "same time", to, from); | |
688 | return; | |
689 | } | |
20d6cd47 JL |
690 | } |
691 | ||
692 | /* rename all items in opts */ | |
693 | while ((value = qemu_opt_get(opts, from))) { | |
f43e47db | 694 | qemu_opt_set(opts, to, value, &error_abort); |
57975222 KW |
695 | qemu_opt_unset(opts, from); |
696 | } | |
697 | } | |
698 | ||
33cb7dc8 KW |
699 | QemuOptsList qemu_legacy_drive_opts = { |
700 | .name = "drive", | |
701 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
702 | .desc = { | |
703 | { | |
87a899c5 KW |
704 | .name = "bus", |
705 | .type = QEMU_OPT_NUMBER, | |
706 | .help = "bus number", | |
707 | },{ | |
708 | .name = "unit", | |
709 | .type = QEMU_OPT_NUMBER, | |
710 | .help = "unit number (i.e. lun for scsi)", | |
711 | },{ | |
712 | .name = "index", | |
713 | .type = QEMU_OPT_NUMBER, | |
714 | .help = "index number", | |
715 | },{ | |
33cb7dc8 KW |
716 | .name = "media", |
717 | .type = QEMU_OPT_STRING, | |
718 | .help = "media type (disk, cdrom)", | |
593d464b KW |
719 | },{ |
720 | .name = "if", | |
721 | .type = QEMU_OPT_STRING, | |
722 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
723 | },{ |
724 | .name = "cyls", | |
725 | .type = QEMU_OPT_NUMBER, | |
726 | .help = "number of cylinders (ide disk geometry)", | |
727 | },{ | |
728 | .name = "heads", | |
729 | .type = QEMU_OPT_NUMBER, | |
730 | .help = "number of heads (ide disk geometry)", | |
731 | },{ | |
732 | .name = "secs", | |
733 | .type = QEMU_OPT_NUMBER, | |
734 | .help = "number of sectors (ide disk geometry)", | |
735 | },{ | |
736 | .name = "trans", | |
737 | .type = QEMU_OPT_STRING, | |
738 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
739 | },{ |
740 | .name = "boot", | |
741 | .type = QEMU_OPT_BOOL, | |
742 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
743 | },{ |
744 | .name = "addr", | |
745 | .type = QEMU_OPT_STRING, | |
746 | .help = "pci address (virtio only)", | |
bcf83158 KW |
747 | },{ |
748 | .name = "serial", | |
749 | .type = QEMU_OPT_STRING, | |
750 | .help = "disk serial number", | |
d095b465 HR |
751 | },{ |
752 | .name = "file", | |
753 | .type = QEMU_OPT_STRING, | |
754 | .help = "file name", | |
33cb7dc8 | 755 | }, |
0ebd24e0 KW |
756 | |
757 | /* Options that are passed on, but have special semantics with -drive */ | |
758 | { | |
4e200cf8 | 759 | .name = BDRV_OPT_READ_ONLY, |
0ebd24e0 KW |
760 | .type = QEMU_OPT_BOOL, |
761 | .help = "open drive file as read-only", | |
ee13ed1c KW |
762 | },{ |
763 | .name = "rerror", | |
764 | .type = QEMU_OPT_STRING, | |
765 | .help = "read error action", | |
766 | },{ | |
767 | .name = "werror", | |
768 | .type = QEMU_OPT_STRING, | |
769 | .help = "write error action", | |
0ebd24e0 KW |
770 | },{ |
771 | .name = "copy-on-read", | |
772 | .type = QEMU_OPT_BOOL, | |
773 | .help = "copy read data from backing file into image file", | |
774 | }, | |
775 | ||
33cb7dc8 KW |
776 | { /* end of list */ } |
777 | }, | |
778 | }; | |
779 | ||
60e19e06 | 780 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
57975222 | 781 | { |
29c4e2b5 | 782 | const char *value; |
18e46a03 | 783 | BlockBackend *blk; |
33cb7dc8 | 784 | DriveInfo *dinfo = NULL; |
f298d071 | 785 | QDict *bs_opts; |
33cb7dc8 KW |
786 | QemuOpts *legacy_opts; |
787 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 788 | BlockInterfaceType type; |
b41a7338 | 789 | int cyls, heads, secs, translation; |
87a899c5 | 790 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 791 | const char *devaddr; |
ee13ed1c | 792 | const char *werror, *rerror; |
a7fdbcf0 FZ |
793 | bool read_only = false; |
794 | bool copy_on_read; | |
bcf83158 | 795 | const char *serial; |
d095b465 | 796 | const char *filename; |
33cb7dc8 | 797 | Error *local_err = NULL; |
247147fb | 798 | int i; |
29c4e2b5 | 799 | |
57975222 | 800 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
801 | static const struct { |
802 | const char *from; | |
803 | const char *to; | |
804 | } opt_renames[] = { | |
805 | { "iops", "throttling.iops-total" }, | |
806 | { "iops_rd", "throttling.iops-read" }, | |
807 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 808 | |
247147fb KW |
809 | { "bps", "throttling.bps-total" }, |
810 | { "bps_rd", "throttling.bps-read" }, | |
811 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 812 | |
247147fb KW |
813 | { "iops_max", "throttling.iops-total-max" }, |
814 | { "iops_rd_max", "throttling.iops-read-max" }, | |
815 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 816 | |
247147fb KW |
817 | { "bps_max", "throttling.bps-total-max" }, |
818 | { "bps_rd_max", "throttling.bps-read-max" }, | |
819 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 820 | |
247147fb | 821 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 822 | |
76f4afb4 AG |
823 | { "group", "throttling.group" }, |
824 | ||
4e200cf8 | 825 | { "readonly", BDRV_OPT_READ_ONLY }, |
247147fb KW |
826 | }; |
827 | ||
828 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
5abbf0ee KW |
829 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
830 | &local_err); | |
831 | if (local_err) { | |
565f65d2 | 832 | error_report_err(local_err); |
5abbf0ee KW |
833 | return NULL; |
834 | } | |
247147fb | 835 | } |
0f227a94 | 836 | |
29c4e2b5 KW |
837 | value = qemu_opt_get(all_opts, "cache"); |
838 | if (value) { | |
839 | int flags = 0; | |
04feb4a5 | 840 | bool writethrough; |
29c4e2b5 | 841 | |
04feb4a5 | 842 | if (bdrv_parse_cache_mode(value, &flags, &writethrough) != 0) { |
29c4e2b5 KW |
843 | error_report("invalid cache option"); |
844 | return NULL; | |
845 | } | |
846 | ||
847 | /* Specific options take precedence */ | |
54861b92 KW |
848 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_WB)) { |
849 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_WB, | |
04feb4a5 | 850 | !writethrough, &error_abort); |
29c4e2b5 | 851 | } |
54861b92 KW |
852 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_DIRECT)) { |
853 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_DIRECT, | |
cccb7967 | 854 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
29c4e2b5 | 855 | } |
54861b92 KW |
856 | if (!qemu_opt_get(all_opts, BDRV_OPT_CACHE_NO_FLUSH)) { |
857 | qemu_opt_set_bool(all_opts, BDRV_OPT_CACHE_NO_FLUSH, | |
cccb7967 | 858 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
29c4e2b5 KW |
859 | } |
860 | qemu_opt_unset(all_opts, "cache"); | |
861 | } | |
862 | ||
f298d071 KW |
863 | /* Get a QDict for processing the options */ |
864 | bs_opts = qdict_new(); | |
865 | qemu_opts_to_qdict(all_opts, bs_opts); | |
866 | ||
87ea75d5 PC |
867 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
868 | &error_abort); | |
33cb7dc8 | 869 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 870 | if (local_err) { |
565f65d2 | 871 | error_report_err(local_err); |
33cb7dc8 KW |
872 | goto fail; |
873 | } | |
874 | ||
26929298 KW |
875 | /* Deprecated option boot=[on|off] */ |
876 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
877 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
878 | "ignored. Future versions will reject this parameter. Please " | |
879 | "update your scripts.\n"); | |
880 | } | |
881 | ||
33cb7dc8 KW |
882 | /* Media type */ |
883 | value = qemu_opt_get(legacy_opts, "media"); | |
884 | if (value) { | |
885 | if (!strcmp(value, "disk")) { | |
886 | media = MEDIA_DISK; | |
887 | } else if (!strcmp(value, "cdrom")) { | |
888 | media = MEDIA_CDROM; | |
a7fdbcf0 | 889 | read_only = true; |
33cb7dc8 KW |
890 | } else { |
891 | error_report("'%s' invalid media", value); | |
892 | goto fail; | |
893 | } | |
894 | } | |
895 | ||
0ebd24e0 | 896 | /* copy-on-read is disabled with a warning for read-only devices */ |
4e200cf8 | 897 | read_only |= qemu_opt_get_bool(legacy_opts, BDRV_OPT_READ_ONLY, false); |
0ebd24e0 KW |
898 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
899 | ||
900 | if (read_only && copy_on_read) { | |
901 | error_report("warning: disabling copy-on-read on read-only drive"); | |
902 | copy_on_read = false; | |
903 | } | |
904 | ||
4e200cf8 | 905 | qdict_put(bs_opts, BDRV_OPT_READ_ONLY, |
0ebd24e0 KW |
906 | qstring_from_str(read_only ? "on" : "off")); |
907 | qdict_put(bs_opts, "copy-on-read", | |
908 | qstring_from_str(copy_on_read ? "on" :"off")); | |
909 | ||
593d464b KW |
910 | /* Controller type */ |
911 | value = qemu_opt_get(legacy_opts, "if"); | |
912 | if (value) { | |
913 | for (type = 0; | |
914 | type < IF_COUNT && strcmp(value, if_name[type]); | |
915 | type++) { | |
916 | } | |
917 | if (type == IF_COUNT) { | |
918 | error_report("unsupported bus type '%s'", value); | |
919 | goto fail; | |
920 | } | |
921 | } else { | |
922 | type = block_default_type; | |
923 | } | |
924 | ||
b41a7338 KW |
925 | /* Geometry */ |
926 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
927 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
928 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
929 | ||
930 | if (cyls || heads || secs) { | |
931 | if (cyls < 1) { | |
932 | error_report("invalid physical cyls number"); | |
933 | goto fail; | |
934 | } | |
935 | if (heads < 1) { | |
936 | error_report("invalid physical heads number"); | |
937 | goto fail; | |
938 | } | |
939 | if (secs < 1) { | |
940 | error_report("invalid physical secs number"); | |
941 | goto fail; | |
942 | } | |
943 | } | |
944 | ||
945 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
946 | value = qemu_opt_get(legacy_opts, "trans"); | |
947 | if (value != NULL) { | |
948 | if (!cyls) { | |
949 | error_report("'%s' trans must be used with cyls, heads and secs", | |
950 | value); | |
951 | goto fail; | |
952 | } | |
953 | if (!strcmp(value, "none")) { | |
954 | translation = BIOS_ATA_TRANSLATION_NONE; | |
955 | } else if (!strcmp(value, "lba")) { | |
956 | translation = BIOS_ATA_TRANSLATION_LBA; | |
f31c41ff PB |
957 | } else if (!strcmp(value, "large")) { |
958 | translation = BIOS_ATA_TRANSLATION_LARGE; | |
959 | } else if (!strcmp(value, "rechs")) { | |
960 | translation = BIOS_ATA_TRANSLATION_RECHS; | |
b41a7338 KW |
961 | } else if (!strcmp(value, "auto")) { |
962 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
963 | } else { | |
964 | error_report("'%s' invalid translation type", value); | |
965 | goto fail; | |
966 | } | |
967 | } | |
968 | ||
969 | if (media == MEDIA_CDROM) { | |
970 | if (cyls || secs || heads) { | |
971 | error_report("CHS can't be set with media=cdrom"); | |
972 | goto fail; | |
973 | } | |
974 | } | |
975 | ||
87a899c5 KW |
976 | /* Device address specified by bus/unit or index. |
977 | * If none was specified, try to find the first free one. */ | |
978 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
979 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
980 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
981 | ||
982 | max_devs = if_max_devs[type]; | |
983 | ||
984 | if (index != -1) { | |
985 | if (bus_id != 0 || unit_id != -1) { | |
986 | error_report("index cannot be used with bus and unit"); | |
987 | goto fail; | |
988 | } | |
989 | bus_id = drive_index_to_bus_id(type, index); | |
990 | unit_id = drive_index_to_unit_id(type, index); | |
991 | } | |
992 | ||
993 | if (unit_id == -1) { | |
994 | unit_id = 0; | |
995 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
996 | unit_id++; | |
997 | if (max_devs && unit_id >= max_devs) { | |
998 | unit_id -= max_devs; | |
999 | bus_id++; | |
1000 | } | |
1001 | } | |
1002 | } | |
1003 | ||
1004 | if (max_devs && unit_id >= max_devs) { | |
1005 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
1006 | goto fail; | |
1007 | } | |
1008 | ||
1009 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
1010 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
1011 | bus_id, unit_id, index); | |
1012 | goto fail; | |
1013 | } | |
1014 | ||
bcf83158 KW |
1015 | /* Serial number */ |
1016 | serial = qemu_opt_get(legacy_opts, "serial"); | |
1017 | ||
87a899c5 KW |
1018 | /* no id supplied -> create one */ |
1019 | if (qemu_opts_id(all_opts) == NULL) { | |
1020 | char *new_id; | |
1021 | const char *mediastr = ""; | |
1022 | if (type == IF_IDE || type == IF_SCSI) { | |
1023 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
1024 | } | |
1025 | if (max_devs) { | |
1026 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
1027 | mediastr, unit_id); | |
1028 | } else { | |
1029 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
1030 | mediastr, unit_id); | |
1031 | } | |
1032 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
1033 | g_free(new_id); | |
1034 | } | |
1035 | ||
394c7d4d KW |
1036 | /* Add virtio block device */ |
1037 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
1038 | if (devaddr && type != IF_VIRTIO) { | |
1039 | error_report("addr is not supported by this bus type"); | |
1040 | goto fail; | |
1041 | } | |
1042 | ||
1043 | if (type == IF_VIRTIO) { | |
1044 | QemuOpts *devopts; | |
87ea75d5 PC |
1045 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
1046 | &error_abort); | |
394c7d4d | 1047 | if (arch_type == QEMU_ARCH_S390X) { |
1f68f1d3 | 1048 | qemu_opt_set(devopts, "driver", "virtio-blk-ccw", &error_abort); |
394c7d4d | 1049 | } else { |
f43e47db | 1050 | qemu_opt_set(devopts, "driver", "virtio-blk-pci", &error_abort); |
394c7d4d | 1051 | } |
f43e47db MA |
1052 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"), |
1053 | &error_abort); | |
394c7d4d | 1054 | if (devaddr) { |
f43e47db | 1055 | qemu_opt_set(devopts, "addr", devaddr, &error_abort); |
394c7d4d KW |
1056 | } |
1057 | } | |
1058 | ||
d095b465 HR |
1059 | filename = qemu_opt_get(legacy_opts, "file"); |
1060 | ||
ee13ed1c KW |
1061 | /* Check werror/rerror compatibility with if=... */ |
1062 | werror = qemu_opt_get(legacy_opts, "werror"); | |
1063 | if (werror != NULL) { | |
1064 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
1065 | type != IF_NONE) { | |
1066 | error_report("werror is not supported by this bus type"); | |
1067 | goto fail; | |
1068 | } | |
1069 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); | |
1070 | } | |
1071 | ||
1072 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
1073 | if (rerror != NULL) { | |
1074 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
1075 | type != IF_NONE) { | |
1076 | error_report("rerror is not supported by this bus type"); | |
1077 | goto fail; | |
1078 | } | |
1079 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); | |
1080 | } | |
1081 | ||
2d246f01 | 1082 | /* Actual block device init: Functionality shared with blockdev-add */ |
18e46a03 | 1083 | blk = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 1084 | bs_opts = NULL; |
18e46a03 | 1085 | if (!blk) { |
84d18f06 | 1086 | if (local_err) { |
565f65d2 | 1087 | error_report_err(local_err); |
b681072d | 1088 | } |
2d246f01 | 1089 | goto fail; |
b681072d | 1090 | } else { |
84d18f06 | 1091 | assert(!local_err); |
2d246f01 KW |
1092 | } |
1093 | ||
26f8b3a8 MA |
1094 | /* Create legacy DriveInfo */ |
1095 | dinfo = g_malloc0(sizeof(*dinfo)); | |
f298d071 | 1096 | dinfo->opts = all_opts; |
2d246f01 | 1097 | |
b41a7338 KW |
1098 | dinfo->cyls = cyls; |
1099 | dinfo->heads = heads; | |
1100 | dinfo->secs = secs; | |
1101 | dinfo->trans = translation; | |
1102 | ||
ee13ed1c | 1103 | dinfo->type = type; |
87a899c5 KW |
1104 | dinfo->bus = bus_id; |
1105 | dinfo->unit = unit_id; | |
394c7d4d | 1106 | dinfo->devaddr = devaddr; |
bcf83158 KW |
1107 | dinfo->serial = g_strdup(serial); |
1108 | ||
26f8b3a8 MA |
1109 | blk_set_legacy_dinfo(blk, dinfo); |
1110 | ||
e34ef046 KW |
1111 | switch(type) { |
1112 | case IF_IDE: | |
1113 | case IF_SCSI: | |
1114 | case IF_XEN: | |
1115 | case IF_NONE: | |
1116 | dinfo->media_cd = media == MEDIA_CDROM; | |
1117 | break; | |
1118 | default: | |
1119 | break; | |
1120 | } | |
1121 | ||
2d246f01 | 1122 | fail: |
33cb7dc8 | 1123 | qemu_opts_del(legacy_opts); |
3cb0e25c | 1124 | QDECREF(bs_opts); |
2d246f01 | 1125 | return dinfo; |
57975222 KW |
1126 | } |
1127 | ||
b6c1bae5 KW |
1128 | static BlockDriverState *qmp_get_root_bs(const char *name, Error **errp) |
1129 | { | |
1130 | BlockDriverState *bs; | |
1131 | ||
1132 | bs = bdrv_lookup_bs(name, name, errp); | |
1133 | if (bs == NULL) { | |
1134 | return NULL; | |
1135 | } | |
1136 | ||
1137 | if (!bdrv_is_root_node(bs)) { | |
1138 | error_setg(errp, "Need a root block node"); | |
1139 | return NULL; | |
1140 | } | |
1141 | ||
1142 | if (!bdrv_is_inserted(bs)) { | |
1143 | error_setg(errp, "Device has no medium"); | |
1144 | return NULL; | |
1145 | } | |
1146 | ||
1147 | return bs; | |
1148 | } | |
1149 | ||
b33945cf KW |
1150 | static BlockBackend *qmp_get_blk(const char *blk_name, const char *qdev_id, |
1151 | Error **errp) | |
1152 | { | |
1153 | BlockBackend *blk; | |
1154 | ||
1155 | if (!blk_name == !qdev_id) { | |
1156 | error_setg(errp, "Need exactly one of 'device' and 'id'"); | |
1157 | return NULL; | |
1158 | } | |
1159 | ||
1160 | if (qdev_id) { | |
1161 | blk = blk_by_qdev_id(qdev_id, errp); | |
1162 | } else { | |
1163 | blk = blk_by_name(blk_name); | |
1164 | if (blk == NULL) { | |
1165 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
1166 | "Device '%s' not found", blk_name); | |
1167 | } | |
1168 | } | |
1169 | ||
1170 | return blk; | |
1171 | } | |
1172 | ||
3e5a50d6 | 1173 | void hmp_commit(Monitor *mon, const QDict *qdict) |
666daa68 | 1174 | { |
666daa68 | 1175 | const char *device = qdict_get_str(qdict, "device"); |
a0e8544c | 1176 | BlockBackend *blk; |
e8877497 | 1177 | int ret; |
666daa68 | 1178 | |
6ab4b5ab | 1179 | if (!strcmp(device, "all")) { |
da31d594 | 1180 | ret = blk_commit_all(); |
6ab4b5ab | 1181 | } else { |
84aa0140 SH |
1182 | BlockDriverState *bs; |
1183 | AioContext *aio_context; | |
1184 | ||
a0e8544c FZ |
1185 | blk = blk_by_name(device); |
1186 | if (!blk) { | |
58513bde | 1187 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 1188 | return; |
6ab4b5ab | 1189 | } |
5433c24f HR |
1190 | if (!blk_is_available(blk)) { |
1191 | monitor_printf(mon, "Device '%s' has no medium\n", device); | |
1192 | return; | |
1193 | } | |
84aa0140 SH |
1194 | |
1195 | bs = blk_bs(blk); | |
1196 | aio_context = bdrv_get_aio_context(bs); | |
1197 | aio_context_acquire(aio_context); | |
1198 | ||
1199 | ret = bdrv_commit(bs); | |
1200 | ||
1201 | aio_context_release(aio_context); | |
58513bde JC |
1202 | } |
1203 | if (ret < 0) { | |
1204 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
1205 | strerror(-ret)); | |
666daa68 MA |
1206 | } |
1207 | } | |
1208 | ||
10f75907 | 1209 | static void blockdev_do_action(TransactionAction *action, Error **errp) |
6cc2a415 | 1210 | { |
c8a83e85 | 1211 | TransactionActionList list; |
6cc2a415 | 1212 | |
10f75907 | 1213 | list.value = action; |
6cc2a415 | 1214 | list.next = NULL; |
94d16a64 | 1215 | qmp_transaction(&list, false, NULL, errp); |
6cc2a415 PB |
1216 | } |
1217 | ||
0901f67e BC |
1218 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1219 | bool has_node_name, const char *node_name, | |
1220 | const char *snapshot_file, | |
1221 | bool has_snapshot_node_name, | |
1222 | const char *snapshot_node_name, | |
6106e249 | 1223 | bool has_format, const char *format, |
0901f67e | 1224 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1225 | { |
a911e6ae | 1226 | BlockdevSnapshotSync snapshot = { |
0901f67e | 1227 | .has_device = has_device, |
6cc2a415 | 1228 | .device = (char *) device, |
0901f67e BC |
1229 | .has_node_name = has_node_name, |
1230 | .node_name = (char *) node_name, | |
6cc2a415 | 1231 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1232 | .has_snapshot_node_name = has_snapshot_node_name, |
1233 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1234 | .has_format = has_format, |
1235 | .format = (char *) format, | |
1236 | .has_mode = has_mode, | |
1237 | .mode = mode, | |
1238 | }; | |
10f75907 EB |
1239 | TransactionAction action = { |
1240 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, | |
32bafa8f | 1241 | .u.blockdev_snapshot_sync.data = &snapshot, |
10f75907 EB |
1242 | }; |
1243 | blockdev_do_action(&action, errp); | |
f8882568 JS |
1244 | } |
1245 | ||
43de7e2d AG |
1246 | void qmp_blockdev_snapshot(const char *node, const char *overlay, |
1247 | Error **errp) | |
1248 | { | |
1249 | BlockdevSnapshot snapshot_data = { | |
1250 | .node = (char *) node, | |
1251 | .overlay = (char *) overlay | |
1252 | }; | |
10f75907 EB |
1253 | TransactionAction action = { |
1254 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT, | |
32bafa8f | 1255 | .u.blockdev_snapshot.data = &snapshot_data, |
10f75907 EB |
1256 | }; |
1257 | blockdev_do_action(&action, errp); | |
43de7e2d AG |
1258 | } |
1259 | ||
f323bc9e WX |
1260 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1261 | const char *name, | |
1262 | Error **errp) | |
1263 | { | |
1264 | BlockdevSnapshotInternal snapshot = { | |
1265 | .device = (char *) device, | |
1266 | .name = (char *) name | |
1267 | }; | |
10f75907 EB |
1268 | TransactionAction action = { |
1269 | .type = TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
32bafa8f | 1270 | .u.blockdev_snapshot_internal_sync.data = &snapshot, |
10f75907 EB |
1271 | }; |
1272 | blockdev_do_action(&action, errp); | |
f323bc9e WX |
1273 | } |
1274 | ||
44e3e053 WX |
1275 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1276 | bool has_id, | |
1277 | const char *id, | |
1278 | bool has_name, | |
1279 | const char *name, | |
1280 | Error **errp) | |
1281 | { | |
a0e8544c | 1282 | BlockDriverState *bs; |
4ef3982a | 1283 | AioContext *aio_context; |
44e3e053 WX |
1284 | QEMUSnapshotInfo sn; |
1285 | Error *local_err = NULL; | |
1286 | SnapshotInfo *info = NULL; | |
1287 | int ret; | |
1288 | ||
2dfb4c03 KW |
1289 | bs = qmp_get_root_bs(device, errp); |
1290 | if (!bs) { | |
44e3e053 WX |
1291 | return NULL; |
1292 | } | |
2dfb4c03 | 1293 | aio_context = bdrv_get_aio_context(bs); |
5433c24f | 1294 | aio_context_acquire(aio_context); |
44e3e053 WX |
1295 | |
1296 | if (!has_id) { | |
1297 | id = NULL; | |
1298 | } | |
1299 | ||
1300 | if (!has_name) { | |
1301 | name = NULL; | |
1302 | } | |
1303 | ||
1304 | if (!id && !name) { | |
1305 | error_setg(errp, "Name or id must be provided"); | |
5433c24f | 1306 | goto out_aio_context; |
44e3e053 WX |
1307 | } |
1308 | ||
0b928854 SH |
1309 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
1310 | goto out_aio_context; | |
1311 | } | |
1312 | ||
44e3e053 | 1313 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
84d18f06 | 1314 | if (local_err) { |
44e3e053 | 1315 | error_propagate(errp, local_err); |
4ef3982a | 1316 | goto out_aio_context; |
44e3e053 WX |
1317 | } |
1318 | if (!ret) { | |
1319 | error_setg(errp, | |
1320 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1321 | "device '%s'", | |
1322 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
4ef3982a | 1323 | goto out_aio_context; |
44e3e053 WX |
1324 | } |
1325 | ||
1326 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1327 | if (local_err) { |
44e3e053 | 1328 | error_propagate(errp, local_err); |
4ef3982a | 1329 | goto out_aio_context; |
44e3e053 WX |
1330 | } |
1331 | ||
4ef3982a SH |
1332 | aio_context_release(aio_context); |
1333 | ||
5839e53b | 1334 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1335 | info->id = g_strdup(sn.id_str); |
1336 | info->name = g_strdup(sn.name); | |
1337 | info->date_nsec = sn.date_nsec; | |
1338 | info->date_sec = sn.date_sec; | |
1339 | info->vm_state_size = sn.vm_state_size; | |
1340 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1341 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1342 | ||
1343 | return info; | |
4ef3982a SH |
1344 | |
1345 | out_aio_context: | |
1346 | aio_context_release(aio_context); | |
1347 | return NULL; | |
44e3e053 | 1348 | } |
8802d1fd | 1349 | |
341ebc2f JS |
1350 | /** |
1351 | * block_dirty_bitmap_lookup: | |
1352 | * Return a dirty bitmap (if present), after validating | |
1353 | * the node reference and bitmap names. | |
1354 | * | |
1355 | * @node: The name of the BDS node to search for bitmaps | |
1356 | * @name: The name of the bitmap to search for | |
1357 | * @pbs: Output pointer for BDS lookup, if desired. Can be NULL. | |
1358 | * @paio: Output pointer for aio_context acquisition, if desired. Can be NULL. | |
1359 | * @errp: Output pointer for error information. Can be NULL. | |
1360 | * | |
1361 | * @return: A bitmap object on success, or NULL on failure. | |
1362 | */ | |
1363 | static BdrvDirtyBitmap *block_dirty_bitmap_lookup(const char *node, | |
1364 | const char *name, | |
1365 | BlockDriverState **pbs, | |
1366 | AioContext **paio, | |
1367 | Error **errp) | |
1368 | { | |
1369 | BlockDriverState *bs; | |
1370 | BdrvDirtyBitmap *bitmap; | |
1371 | AioContext *aio_context; | |
1372 | ||
1373 | if (!node) { | |
1374 | error_setg(errp, "Node cannot be NULL"); | |
1375 | return NULL; | |
1376 | } | |
1377 | if (!name) { | |
1378 | error_setg(errp, "Bitmap name cannot be NULL"); | |
1379 | return NULL; | |
1380 | } | |
1381 | bs = bdrv_lookup_bs(node, node, NULL); | |
1382 | if (!bs) { | |
1383 | error_setg(errp, "Node '%s' not found", node); | |
1384 | return NULL; | |
1385 | } | |
1386 | ||
1387 | aio_context = bdrv_get_aio_context(bs); | |
1388 | aio_context_acquire(aio_context); | |
1389 | ||
1390 | bitmap = bdrv_find_dirty_bitmap(bs, name); | |
1391 | if (!bitmap) { | |
1392 | error_setg(errp, "Dirty bitmap '%s' not found", name); | |
1393 | goto fail; | |
1394 | } | |
1395 | ||
1396 | if (pbs) { | |
1397 | *pbs = bs; | |
1398 | } | |
1399 | if (paio) { | |
1400 | *paio = aio_context; | |
1401 | } else { | |
1402 | aio_context_release(aio_context); | |
1403 | } | |
1404 | ||
1405 | return bitmap; | |
1406 | ||
1407 | fail: | |
1408 | aio_context_release(aio_context); | |
1409 | return NULL; | |
1410 | } | |
1411 | ||
b756b9ce | 1412 | /* New and old BlockDriverState structs for atomic group operations */ |
ba0c86a3 | 1413 | |
50f43f0f | 1414 | typedef struct BlkActionState BlkActionState; |
ba0c86a3 | 1415 | |
50f43f0f JS |
1416 | /** |
1417 | * BlkActionOps: | |
1418 | * Table of operations that define an Action. | |
1419 | * | |
1420 | * @instance_size: Size of state struct, in bytes. | |
1421 | * @prepare: Prepare the work, must NOT be NULL. | |
1422 | * @commit: Commit the changes, can be NULL. | |
1423 | * @abort: Abort the changes on fail, can be NULL. | |
1424 | * @clean: Clean up resources after all transaction actions have called | |
1425 | * commit() or abort(). Can be NULL. | |
1426 | * | |
1427 | * Only prepare() may fail. In a single transaction, only one of commit() or | |
1428 | * abort() will be called. clean() will always be called if it is present. | |
1429 | */ | |
1430 | typedef struct BlkActionOps { | |
ba0c86a3 | 1431 | size_t instance_size; |
50f43f0f JS |
1432 | void (*prepare)(BlkActionState *common, Error **errp); |
1433 | void (*commit)(BlkActionState *common); | |
1434 | void (*abort)(BlkActionState *common); | |
1435 | void (*clean)(BlkActionState *common); | |
1436 | } BlkActionOps; | |
ba0c86a3 | 1437 | |
50f43f0f JS |
1438 | /** |
1439 | * BlkActionState: | |
1440 | * Describes one Action's state within a Transaction. | |
1441 | * | |
1442 | * @action: QAPI-defined enum identifying which Action to perform. | |
1443 | * @ops: Table of ActionOps this Action can perform. | |
94d16a64 | 1444 | * @block_job_txn: Transaction which this action belongs to. |
50f43f0f JS |
1445 | * @entry: List membership for all Actions in this Transaction. |
1446 | * | |
1447 | * This structure must be arranged as first member in a subclassed type, | |
1448 | * assuming that the compiler will also arrange it to the same offsets as the | |
1449 | * base class. | |
ba0c86a3 | 1450 | */ |
50f43f0f | 1451 | struct BlkActionState { |
c8a83e85 | 1452 | TransactionAction *action; |
50f43f0f | 1453 | const BlkActionOps *ops; |
94d16a64 JS |
1454 | BlockJobTxn *block_job_txn; |
1455 | TransactionProperties *txn_props; | |
50f43f0f | 1456 | QSIMPLEQ_ENTRY(BlkActionState) entry; |
ba0c86a3 WX |
1457 | }; |
1458 | ||
bbe86010 WX |
1459 | /* internal snapshot private data */ |
1460 | typedef struct InternalSnapshotState { | |
50f43f0f | 1461 | BlkActionState common; |
bbe86010 | 1462 | BlockDriverState *bs; |
5d6e96ef | 1463 | AioContext *aio_context; |
bbe86010 | 1464 | QEMUSnapshotInfo sn; |
507306cc | 1465 | bool created; |
bbe86010 WX |
1466 | } InternalSnapshotState; |
1467 | ||
94d16a64 JS |
1468 | |
1469 | static int action_check_completion_mode(BlkActionState *s, Error **errp) | |
1470 | { | |
1471 | if (s->txn_props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
1472 | error_setg(errp, | |
1473 | "Action '%s' does not support Transaction property " | |
1474 | "completion-mode = %s", | |
1475 | TransactionActionKind_lookup[s->action->type], | |
1476 | ActionCompletionMode_lookup[s->txn_props->completion_mode]); | |
1477 | return -1; | |
1478 | } | |
1479 | return 0; | |
1480 | } | |
1481 | ||
50f43f0f | 1482 | static void internal_snapshot_prepare(BlkActionState *common, |
bbe86010 WX |
1483 | Error **errp) |
1484 | { | |
f70edf99 | 1485 | Error *local_err = NULL; |
bbe86010 WX |
1486 | const char *device; |
1487 | const char *name; | |
1488 | BlockDriverState *bs; | |
1489 | QEMUSnapshotInfo old_sn, *sn; | |
1490 | bool ret; | |
1491 | qemu_timeval tv; | |
1492 | BlockdevSnapshotInternal *internal; | |
1493 | InternalSnapshotState *state; | |
1494 | int ret1; | |
1495 | ||
6a8f9661 | 1496 | g_assert(common->action->type == |
bbe86010 | 1497 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); |
32bafa8f | 1498 | internal = common->action->u.blockdev_snapshot_internal_sync.data; |
bbe86010 WX |
1499 | state = DO_UPCAST(InternalSnapshotState, common, common); |
1500 | ||
1501 | /* 1. parse input */ | |
1502 | device = internal->device; | |
1503 | name = internal->name; | |
1504 | ||
1505 | /* 2. check for validation */ | |
94d16a64 JS |
1506 | if (action_check_completion_mode(common, errp) < 0) { |
1507 | return; | |
1508 | } | |
1509 | ||
75dfd402 KW |
1510 | bs = qmp_get_root_bs(device, errp); |
1511 | if (!bs) { | |
bbe86010 WX |
1512 | return; |
1513 | } | |
1514 | ||
5d6e96ef | 1515 | /* AioContext is released in .clean() */ |
75dfd402 | 1516 | state->aio_context = bdrv_get_aio_context(bs); |
5d6e96ef SH |
1517 | aio_context_acquire(state->aio_context); |
1518 | ||
507306cc FZ |
1519 | state->bs = bs; |
1520 | bdrv_drained_begin(bs); | |
1521 | ||
3dc7ca3c SH |
1522 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
1523 | return; | |
1524 | } | |
1525 | ||
bbe86010 | 1526 | if (bdrv_is_read_only(bs)) { |
81e5f78a | 1527 | error_setg(errp, "Device '%s' is read only", device); |
bbe86010 WX |
1528 | return; |
1529 | } | |
1530 | ||
1531 | if (!bdrv_can_snapshot(bs)) { | |
81e5f78a AG |
1532 | error_setg(errp, "Block format '%s' used by device '%s' " |
1533 | "does not support internal snapshots", | |
1534 | bs->drv->format_name, device); | |
bbe86010 WX |
1535 | return; |
1536 | } | |
1537 | ||
1538 | if (!strlen(name)) { | |
1539 | error_setg(errp, "Name is empty"); | |
1540 | return; | |
1541 | } | |
1542 | ||
1543 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1544 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1545 | &local_err); | |
1546 | if (local_err) { | |
1547 | error_propagate(errp, local_err); | |
bbe86010 WX |
1548 | return; |
1549 | } else if (ret) { | |
1550 | error_setg(errp, | |
1551 | "Snapshot with name '%s' already exists on device '%s'", | |
1552 | name, device); | |
1553 | return; | |
1554 | } | |
1555 | ||
1556 | /* 3. take the snapshot */ | |
1557 | sn = &state->sn; | |
1558 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1559 | qemu_gettimeofday(&tv); | |
1560 | sn->date_sec = tv.tv_sec; | |
1561 | sn->date_nsec = tv.tv_usec * 1000; | |
1562 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1563 | ||
1564 | ret1 = bdrv_snapshot_create(bs, sn); | |
1565 | if (ret1 < 0) { | |
1566 | error_setg_errno(errp, -ret1, | |
1567 | "Failed to create snapshot '%s' on device '%s'", | |
1568 | name, device); | |
1569 | return; | |
1570 | } | |
1571 | ||
1572 | /* 4. succeed, mark a snapshot is created */ | |
507306cc | 1573 | state->created = true; |
bbe86010 WX |
1574 | } |
1575 | ||
50f43f0f | 1576 | static void internal_snapshot_abort(BlkActionState *common) |
bbe86010 WX |
1577 | { |
1578 | InternalSnapshotState *state = | |
1579 | DO_UPCAST(InternalSnapshotState, common, common); | |
1580 | BlockDriverState *bs = state->bs; | |
1581 | QEMUSnapshotInfo *sn = &state->sn; | |
1582 | Error *local_error = NULL; | |
1583 | ||
507306cc | 1584 | if (!state->created) { |
bbe86010 WX |
1585 | return; |
1586 | } | |
1587 | ||
1588 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
c29b77f9 MA |
1589 | error_reportf_err(local_error, |
1590 | "Failed to delete snapshot with id '%s' and " | |
1591 | "name '%s' on device '%s' in abort: ", | |
1592 | sn->id_str, sn->name, | |
1593 | bdrv_get_device_name(bs)); | |
bbe86010 WX |
1594 | } |
1595 | } | |
1596 | ||
50f43f0f | 1597 | static void internal_snapshot_clean(BlkActionState *common) |
5d6e96ef SH |
1598 | { |
1599 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, | |
1600 | common, common); | |
1601 | ||
1602 | if (state->aio_context) { | |
507306cc FZ |
1603 | if (state->bs) { |
1604 | bdrv_drained_end(state->bs); | |
1605 | } | |
5d6e96ef SH |
1606 | aio_context_release(state->aio_context); |
1607 | } | |
1608 | } | |
1609 | ||
ba0c86a3 | 1610 | /* external snapshot private data */ |
ba5d6ab6 | 1611 | typedef struct ExternalSnapshotState { |
50f43f0f | 1612 | BlkActionState common; |
8802d1fd JC |
1613 | BlockDriverState *old_bs; |
1614 | BlockDriverState *new_bs; | |
5d6e96ef | 1615 | AioContext *aio_context; |
ba5d6ab6 | 1616 | } ExternalSnapshotState; |
8802d1fd | 1617 | |
50f43f0f | 1618 | static void external_snapshot_prepare(BlkActionState *common, |
9b9877ee WX |
1619 | Error **errp) |
1620 | { | |
5b363937 | 1621 | int flags = 0; |
43de7e2d | 1622 | QDict *options = NULL; |
9b9877ee | 1623 | Error *local_err = NULL; |
43de7e2d | 1624 | /* Device and node name of the image to generate the snapshot from */ |
e2a31e87 | 1625 | const char *device; |
0901f67e | 1626 | const char *node_name; |
43de7e2d AG |
1627 | /* Reference to the new image (for 'blockdev-snapshot') */ |
1628 | const char *snapshot_ref; | |
1629 | /* File name of the new image (for 'blockdev-snapshot-sync') */ | |
e2a31e87 | 1630 | const char *new_image_file; |
ba5d6ab6 SH |
1631 | ExternalSnapshotState *state = |
1632 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1633 | TransactionAction *action = common->action; |
9b9877ee | 1634 | |
43de7e2d AG |
1635 | /* 'blockdev-snapshot' and 'blockdev-snapshot-sync' have similar |
1636 | * purpose but a different set of parameters */ | |
1637 | switch (action->type) { | |
1638 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT: | |
1639 | { | |
32bafa8f | 1640 | BlockdevSnapshot *s = action->u.blockdev_snapshot.data; |
43de7e2d AG |
1641 | device = s->node; |
1642 | node_name = s->node; | |
1643 | new_image_file = NULL; | |
1644 | snapshot_ref = s->overlay; | |
1645 | } | |
1646 | break; | |
1647 | case TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: | |
1648 | { | |
32bafa8f | 1649 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
43de7e2d AG |
1650 | device = s->has_device ? s->device : NULL; |
1651 | node_name = s->has_node_name ? s->node_name : NULL; | |
1652 | new_image_file = s->snapshot_file; | |
1653 | snapshot_ref = NULL; | |
1654 | } | |
1655 | break; | |
1656 | default: | |
1657 | g_assert_not_reached(); | |
e2a31e87 WX |
1658 | } |
1659 | ||
1660 | /* start processing */ | |
94d16a64 JS |
1661 | if (action_check_completion_mode(common, errp) < 0) { |
1662 | return; | |
1663 | } | |
1664 | ||
43de7e2d AG |
1665 | state->old_bs = bdrv_lookup_bs(device, node_name, errp); |
1666 | if (!state->old_bs) { | |
9b9877ee WX |
1667 | return; |
1668 | } | |
1669 | ||
5d6e96ef SH |
1670 | /* Acquire AioContext now so any threads operating on old_bs stop */ |
1671 | state->aio_context = bdrv_get_aio_context(state->old_bs); | |
1672 | aio_context_acquire(state->aio_context); | |
da763e83 | 1673 | bdrv_drained_begin(state->old_bs); |
5d6e96ef | 1674 | |
ba5d6ab6 | 1675 | if (!bdrv_is_inserted(state->old_bs)) { |
c6bd8c70 | 1676 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
9b9877ee WX |
1677 | return; |
1678 | } | |
1679 | ||
3718d8ab FZ |
1680 | if (bdrv_op_is_blocked(state->old_bs, |
1681 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
9b9877ee WX |
1682 | return; |
1683 | } | |
1684 | ||
ba5d6ab6 SH |
1685 | if (!bdrv_is_read_only(state->old_bs)) { |
1686 | if (bdrv_flush(state->old_bs)) { | |
c6bd8c70 | 1687 | error_setg(errp, QERR_IO_ERROR); |
9b9877ee WX |
1688 | return; |
1689 | } | |
1690 | } | |
1691 | ||
212a5a8f | 1692 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
c6bd8c70 | 1693 | error_setg(errp, QERR_FEATURE_DISABLED, "snapshot"); |
f6186f49 BC |
1694 | return; |
1695 | } | |
1696 | ||
43de7e2d | 1697 | if (action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC) { |
32bafa8f | 1698 | BlockdevSnapshotSync *s = action->u.blockdev_snapshot_sync.data; |
43de7e2d AG |
1699 | const char *format = s->has_format ? s->format : "qcow2"; |
1700 | enum NewImageMode mode; | |
1701 | const char *snapshot_node_name = | |
1702 | s->has_snapshot_node_name ? s->snapshot_node_name : NULL; | |
9b9877ee | 1703 | |
43de7e2d AG |
1704 | if (node_name && !snapshot_node_name) { |
1705 | error_setg(errp, "New snapshot node name missing"); | |
9b9877ee WX |
1706 | return; |
1707 | } | |
9b9877ee | 1708 | |
43de7e2d AG |
1709 | if (snapshot_node_name && |
1710 | bdrv_lookup_bs(snapshot_node_name, snapshot_node_name, NULL)) { | |
1711 | error_setg(errp, "New snapshot node name already in use"); | |
1712 | return; | |
1713 | } | |
1714 | ||
1715 | flags = state->old_bs->open_flags; | |
4c844983 | 1716 | flags &= ~(BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | BDRV_O_COPY_ON_READ); |
43de7e2d AG |
1717 | |
1718 | /* create new image w/backing file */ | |
1719 | mode = s->has_mode ? s->mode : NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1720 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
f86b8b58 KW |
1721 | int64_t size = bdrv_getlength(state->old_bs); |
1722 | if (size < 0) { | |
1723 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1724 | return; | |
1725 | } | |
43de7e2d AG |
1726 | bdrv_img_create(new_image_file, format, |
1727 | state->old_bs->filename, | |
1728 | state->old_bs->drv->format_name, | |
f86b8b58 | 1729 | NULL, size, flags, &local_err, false); |
43de7e2d AG |
1730 | if (local_err) { |
1731 | error_propagate(errp, local_err); | |
1732 | return; | |
1733 | } | |
1734 | } | |
1735 | ||
1736 | options = qdict_new(); | |
1737 | if (s->has_snapshot_node_name) { | |
1738 | qdict_put(options, "node-name", | |
1739 | qstring_from_str(snapshot_node_name)); | |
1740 | } | |
1741 | qdict_put(options, "driver", qstring_from_str(format)); | |
1742 | ||
1743 | flags |= BDRV_O_NO_BACKING; | |
0901f67e BC |
1744 | } |
1745 | ||
5b363937 HR |
1746 | state->new_bs = bdrv_open(new_image_file, snapshot_ref, options, flags, |
1747 | errp); | |
f67503e5 | 1748 | /* We will manually add the backing_hd field to the bs later */ |
5b363937 | 1749 | if (!state->new_bs) { |
43de7e2d AG |
1750 | return; |
1751 | } | |
1752 | ||
1f0c461b | 1753 | if (bdrv_has_blk(state->new_bs)) { |
e467da7b | 1754 | error_setg(errp, "The snapshot is already in use"); |
43de7e2d AG |
1755 | return; |
1756 | } | |
1757 | ||
1758 | if (bdrv_op_is_blocked(state->new_bs, BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, | |
1759 | errp)) { | |
1760 | return; | |
1761 | } | |
1762 | ||
1763 | if (state->new_bs->backing != NULL) { | |
1764 | error_setg(errp, "The snapshot already has a backing image"); | |
08b24cfe AG |
1765 | return; |
1766 | } | |
1767 | ||
1768 | if (!state->new_bs->drv->supports_backing) { | |
1769 | error_setg(errp, "The snapshot does not support backing images"); | |
9b9877ee WX |
1770 | } |
1771 | } | |
1772 | ||
50f43f0f | 1773 | static void external_snapshot_commit(BlkActionState *common) |
3b0047e8 | 1774 | { |
ba5d6ab6 SH |
1775 | ExternalSnapshotState *state = |
1776 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1777 | |
5d6e96ef SH |
1778 | bdrv_set_aio_context(state->new_bs, state->aio_context); |
1779 | ||
ba5d6ab6 SH |
1780 | /* This removes our old bs and adds the new bs */ |
1781 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1782 | /* We don't need (or want) to use the transactional |
1783 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1784 | * don't want to abort all of them if one of them fails the reopen */ | |
4c844983 KW |
1785 | if (!state->old_bs->copy_on_read) { |
1786 | bdrv_reopen(state->old_bs, state->old_bs->open_flags & ~BDRV_O_RDWR, | |
1787 | NULL); | |
1788 | } | |
3b0047e8 WX |
1789 | } |
1790 | ||
50f43f0f | 1791 | static void external_snapshot_abort(BlkActionState *common) |
96b86bf7 | 1792 | { |
ba5d6ab6 SH |
1793 | ExternalSnapshotState *state = |
1794 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1795 | if (state->new_bs) { | |
4f6fd349 | 1796 | bdrv_unref(state->new_bs); |
96b86bf7 | 1797 | } |
da763e83 FZ |
1798 | } |
1799 | ||
50f43f0f | 1800 | static void external_snapshot_clean(BlkActionState *common) |
da763e83 FZ |
1801 | { |
1802 | ExternalSnapshotState *state = | |
1803 | DO_UPCAST(ExternalSnapshotState, common, common); | |
5d6e96ef | 1804 | if (state->aio_context) { |
da763e83 | 1805 | bdrv_drained_end(state->old_bs); |
5d6e96ef SH |
1806 | aio_context_release(state->aio_context); |
1807 | } | |
96b86bf7 WX |
1808 | } |
1809 | ||
3037f364 | 1810 | typedef struct DriveBackupState { |
50f43f0f | 1811 | BlkActionState common; |
3037f364 | 1812 | BlockDriverState *bs; |
5d6e96ef | 1813 | AioContext *aio_context; |
3037f364 SH |
1814 | BlockJob *job; |
1815 | } DriveBackupState; | |
1816 | ||
111049a4 | 1817 | static BlockJob *do_drive_backup(DriveBackup *backup, BlockJobTxn *txn, |
81206a89 | 1818 | Error **errp); |
78f51fde | 1819 | |
50f43f0f | 1820 | static void drive_backup_prepare(BlkActionState *common, Error **errp) |
3037f364 SH |
1821 | { |
1822 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
b7e4fa22 | 1823 | BlockDriverState *bs; |
3037f364 SH |
1824 | DriveBackup *backup; |
1825 | Error *local_err = NULL; | |
1826 | ||
6a8f9661 | 1827 | assert(common->action->type == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); |
32bafa8f | 1828 | backup = common->action->u.drive_backup.data; |
3037f364 | 1829 | |
b7e4fa22 KW |
1830 | bs = qmp_get_root_bs(backup->device, errp); |
1831 | if (!bs) { | |
1fdd4b7b FZ |
1832 | return; |
1833 | } | |
1834 | ||
5d6e96ef | 1835 | /* AioContext is released in .clean() */ |
b7e4fa22 | 1836 | state->aio_context = bdrv_get_aio_context(bs); |
5d6e96ef | 1837 | aio_context_acquire(state->aio_context); |
b7e4fa22 KW |
1838 | bdrv_drained_begin(bs); |
1839 | state->bs = bs; | |
5d6e96ef | 1840 | |
111049a4 | 1841 | state->job = do_drive_backup(backup, common->block_job_txn, &local_err); |
84d18f06 | 1842 | if (local_err) { |
3037f364 | 1843 | error_propagate(errp, local_err); |
3037f364 SH |
1844 | return; |
1845 | } | |
111049a4 | 1846 | } |
3037f364 | 1847 | |
111049a4 JS |
1848 | static void drive_backup_commit(BlkActionState *common) |
1849 | { | |
1850 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1851 | assert(state->job); | |
1852 | block_job_start(state->job); | |
3037f364 SH |
1853 | } |
1854 | ||
50f43f0f | 1855 | static void drive_backup_abort(BlkActionState *common) |
3037f364 SH |
1856 | { |
1857 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
3037f364 | 1858 | |
111049a4 JS |
1859 | if (state->job) { |
1860 | block_job_cancel_sync(state->job); | |
3037f364 SH |
1861 | } |
1862 | } | |
1863 | ||
50f43f0f | 1864 | static void drive_backup_clean(BlkActionState *common) |
5d6e96ef SH |
1865 | { |
1866 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1867 | ||
1868 | if (state->aio_context) { | |
1fdd4b7b | 1869 | bdrv_drained_end(state->bs); |
5d6e96ef SH |
1870 | aio_context_release(state->aio_context); |
1871 | } | |
1872 | } | |
1873 | ||
bd8baecd | 1874 | typedef struct BlockdevBackupState { |
50f43f0f | 1875 | BlkActionState common; |
bd8baecd FZ |
1876 | BlockDriverState *bs; |
1877 | BlockJob *job; | |
1878 | AioContext *aio_context; | |
1879 | } BlockdevBackupState; | |
1880 | ||
111049a4 JS |
1881 | static BlockJob *do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn, |
1882 | Error **errp); | |
78f51fde | 1883 | |
50f43f0f | 1884 | static void blockdev_backup_prepare(BlkActionState *common, Error **errp) |
bd8baecd FZ |
1885 | { |
1886 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1887 | BlockdevBackup *backup; | |
cef34eeb | 1888 | BlockDriverState *bs, *target; |
bd8baecd FZ |
1889 | Error *local_err = NULL; |
1890 | ||
6a8f9661 | 1891 | assert(common->action->type == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); |
32bafa8f | 1892 | backup = common->action->u.blockdev_backup.data; |
bd8baecd | 1893 | |
cef34eeb KW |
1894 | bs = qmp_get_root_bs(backup->device, errp); |
1895 | if (!bs) { | |
ff52bf36 FZ |
1896 | return; |
1897 | } | |
1898 | ||
39d990ac | 1899 | target = bdrv_lookup_bs(backup->target, backup->target, errp); |
5433c24f | 1900 | if (!target) { |
bd8baecd FZ |
1901 | return; |
1902 | } | |
1903 | ||
1904 | /* AioContext is released in .clean() */ | |
cef34eeb | 1905 | state->aio_context = bdrv_get_aio_context(bs); |
39d990ac | 1906 | if (state->aio_context != bdrv_get_aio_context(target)) { |
bd8baecd FZ |
1907 | state->aio_context = NULL; |
1908 | error_setg(errp, "Backup between two IO threads is not implemented"); | |
1909 | return; | |
1910 | } | |
1911 | aio_context_acquire(state->aio_context); | |
cef34eeb | 1912 | state->bs = bs; |
ff52bf36 | 1913 | bdrv_drained_begin(state->bs); |
bd8baecd | 1914 | |
111049a4 | 1915 | state->job = do_blockdev_backup(backup, common->block_job_txn, &local_err); |
bd8baecd FZ |
1916 | if (local_err) { |
1917 | error_propagate(errp, local_err); | |
1918 | return; | |
1919 | } | |
111049a4 | 1920 | } |
bd8baecd | 1921 | |
111049a4 JS |
1922 | static void blockdev_backup_commit(BlkActionState *common) |
1923 | { | |
1924 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1925 | assert(state->job); | |
1926 | block_job_start(state->job); | |
bd8baecd FZ |
1927 | } |
1928 | ||
50f43f0f | 1929 | static void blockdev_backup_abort(BlkActionState *common) |
bd8baecd FZ |
1930 | { |
1931 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
bd8baecd | 1932 | |
111049a4 JS |
1933 | if (state->job) { |
1934 | block_job_cancel_sync(state->job); | |
bd8baecd FZ |
1935 | } |
1936 | } | |
1937 | ||
50f43f0f | 1938 | static void blockdev_backup_clean(BlkActionState *common) |
bd8baecd FZ |
1939 | { |
1940 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1941 | ||
1942 | if (state->aio_context) { | |
ff52bf36 | 1943 | bdrv_drained_end(state->bs); |
bd8baecd FZ |
1944 | aio_context_release(state->aio_context); |
1945 | } | |
1946 | } | |
1947 | ||
df9a681d | 1948 | typedef struct BlockDirtyBitmapState { |
50f43f0f | 1949 | BlkActionState common; |
df9a681d FZ |
1950 | BdrvDirtyBitmap *bitmap; |
1951 | BlockDriverState *bs; | |
1952 | AioContext *aio_context; | |
1953 | HBitmap *backup; | |
1954 | bool prepared; | |
1955 | } BlockDirtyBitmapState; | |
1956 | ||
50f43f0f | 1957 | static void block_dirty_bitmap_add_prepare(BlkActionState *common, |
df9a681d FZ |
1958 | Error **errp) |
1959 | { | |
1960 | Error *local_err = NULL; | |
1961 | BlockDirtyBitmapAdd *action; | |
1962 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
1963 | common, common); | |
1964 | ||
94d16a64 JS |
1965 | if (action_check_completion_mode(common, errp) < 0) { |
1966 | return; | |
1967 | } | |
1968 | ||
32bafa8f | 1969 | action = common->action->u.block_dirty_bitmap_add.data; |
df9a681d FZ |
1970 | /* AIO context taken and released within qmp_block_dirty_bitmap_add */ |
1971 | qmp_block_dirty_bitmap_add(action->node, action->name, | |
1972 | action->has_granularity, action->granularity, | |
1973 | &local_err); | |
1974 | ||
1975 | if (!local_err) { | |
1976 | state->prepared = true; | |
1977 | } else { | |
1978 | error_propagate(errp, local_err); | |
1979 | } | |
1980 | } | |
1981 | ||
50f43f0f | 1982 | static void block_dirty_bitmap_add_abort(BlkActionState *common) |
df9a681d FZ |
1983 | { |
1984 | BlockDirtyBitmapAdd *action; | |
1985 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
1986 | common, common); | |
1987 | ||
32bafa8f | 1988 | action = common->action->u.block_dirty_bitmap_add.data; |
df9a681d FZ |
1989 | /* Should not be able to fail: IF the bitmap was added via .prepare(), |
1990 | * then the node reference and bitmap name must have been valid. | |
1991 | */ | |
1992 | if (state->prepared) { | |
1993 | qmp_block_dirty_bitmap_remove(action->node, action->name, &error_abort); | |
1994 | } | |
1995 | } | |
1996 | ||
50f43f0f | 1997 | static void block_dirty_bitmap_clear_prepare(BlkActionState *common, |
df9a681d FZ |
1998 | Error **errp) |
1999 | { | |
2000 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2001 | common, common); | |
2002 | BlockDirtyBitmap *action; | |
2003 | ||
94d16a64 JS |
2004 | if (action_check_completion_mode(common, errp) < 0) { |
2005 | return; | |
2006 | } | |
2007 | ||
32bafa8f | 2008 | action = common->action->u.block_dirty_bitmap_clear.data; |
df9a681d FZ |
2009 | state->bitmap = block_dirty_bitmap_lookup(action->node, |
2010 | action->name, | |
2011 | &state->bs, | |
2012 | &state->aio_context, | |
2013 | errp); | |
2014 | if (!state->bitmap) { | |
2015 | return; | |
2016 | } | |
2017 | ||
2018 | if (bdrv_dirty_bitmap_frozen(state->bitmap)) { | |
2019 | error_setg(errp, "Cannot modify a frozen bitmap"); | |
2020 | return; | |
2021 | } else if (!bdrv_dirty_bitmap_enabled(state->bitmap)) { | |
2022 | error_setg(errp, "Cannot clear a disabled bitmap"); | |
2023 | return; | |
2024 | } | |
2025 | ||
2026 | bdrv_clear_dirty_bitmap(state->bitmap, &state->backup); | |
2027 | /* AioContext is released in .clean() */ | |
2028 | } | |
2029 | ||
50f43f0f | 2030 | static void block_dirty_bitmap_clear_abort(BlkActionState *common) |
df9a681d FZ |
2031 | { |
2032 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2033 | common, common); | |
2034 | ||
2035 | bdrv_undo_clear_dirty_bitmap(state->bitmap, state->backup); | |
2036 | } | |
2037 | ||
50f43f0f | 2038 | static void block_dirty_bitmap_clear_commit(BlkActionState *common) |
df9a681d FZ |
2039 | { |
2040 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2041 | common, common); | |
2042 | ||
2043 | hbitmap_free(state->backup); | |
2044 | } | |
2045 | ||
50f43f0f | 2046 | static void block_dirty_bitmap_clear_clean(BlkActionState *common) |
df9a681d FZ |
2047 | { |
2048 | BlockDirtyBitmapState *state = DO_UPCAST(BlockDirtyBitmapState, | |
2049 | common, common); | |
2050 | ||
2051 | if (state->aio_context) { | |
2052 | aio_context_release(state->aio_context); | |
2053 | } | |
2054 | } | |
2055 | ||
50f43f0f | 2056 | static void abort_prepare(BlkActionState *common, Error **errp) |
78b18b78 SH |
2057 | { |
2058 | error_setg(errp, "Transaction aborted using Abort action"); | |
2059 | } | |
2060 | ||
50f43f0f | 2061 | static void abort_commit(BlkActionState *common) |
78b18b78 | 2062 | { |
dfc6f865 | 2063 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
2064 | } |
2065 | ||
50f43f0f | 2066 | static const BlkActionOps actions[] = { |
43de7e2d AG |
2067 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT] = { |
2068 | .instance_size = sizeof(ExternalSnapshotState), | |
2069 | .prepare = external_snapshot_prepare, | |
2070 | .commit = external_snapshot_commit, | |
2071 | .abort = external_snapshot_abort, | |
4ad6f3db | 2072 | .clean = external_snapshot_clean, |
43de7e2d | 2073 | }, |
c8a83e85 | 2074 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 2075 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
2076 | .prepare = external_snapshot_prepare, |
2077 | .commit = external_snapshot_commit, | |
2078 | .abort = external_snapshot_abort, | |
da763e83 | 2079 | .clean = external_snapshot_clean, |
ba0c86a3 | 2080 | }, |
3037f364 SH |
2081 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
2082 | .instance_size = sizeof(DriveBackupState), | |
2083 | .prepare = drive_backup_prepare, | |
111049a4 | 2084 | .commit = drive_backup_commit, |
3037f364 | 2085 | .abort = drive_backup_abort, |
5d6e96ef | 2086 | .clean = drive_backup_clean, |
3037f364 | 2087 | }, |
bd8baecd FZ |
2088 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
2089 | .instance_size = sizeof(BlockdevBackupState), | |
2090 | .prepare = blockdev_backup_prepare, | |
111049a4 | 2091 | .commit = blockdev_backup_commit, |
bd8baecd FZ |
2092 | .abort = blockdev_backup_abort, |
2093 | .clean = blockdev_backup_clean, | |
2094 | }, | |
78b18b78 | 2095 | [TRANSACTION_ACTION_KIND_ABORT] = { |
50f43f0f | 2096 | .instance_size = sizeof(BlkActionState), |
78b18b78 SH |
2097 | .prepare = abort_prepare, |
2098 | .commit = abort_commit, | |
2099 | }, | |
bbe86010 WX |
2100 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
2101 | .instance_size = sizeof(InternalSnapshotState), | |
2102 | .prepare = internal_snapshot_prepare, | |
2103 | .abort = internal_snapshot_abort, | |
5d6e96ef | 2104 | .clean = internal_snapshot_clean, |
bbe86010 | 2105 | }, |
df9a681d FZ |
2106 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_ADD] = { |
2107 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2108 | .prepare = block_dirty_bitmap_add_prepare, | |
2109 | .abort = block_dirty_bitmap_add_abort, | |
2110 | }, | |
2111 | [TRANSACTION_ACTION_KIND_BLOCK_DIRTY_BITMAP_CLEAR] = { | |
2112 | .instance_size = sizeof(BlockDirtyBitmapState), | |
2113 | .prepare = block_dirty_bitmap_clear_prepare, | |
2114 | .commit = block_dirty_bitmap_clear_commit, | |
2115 | .abort = block_dirty_bitmap_clear_abort, | |
2116 | .clean = block_dirty_bitmap_clear_clean, | |
2117 | } | |
ba0c86a3 WX |
2118 | }; |
2119 | ||
94d16a64 JS |
2120 | /** |
2121 | * Allocate a TransactionProperties structure if necessary, and fill | |
2122 | * that structure with desired defaults if they are unset. | |
2123 | */ | |
2124 | static TransactionProperties *get_transaction_properties( | |
2125 | TransactionProperties *props) | |
2126 | { | |
2127 | if (!props) { | |
2128 | props = g_new0(TransactionProperties, 1); | |
2129 | } | |
2130 | ||
2131 | if (!props->has_completion_mode) { | |
2132 | props->has_completion_mode = true; | |
2133 | props->completion_mode = ACTION_COMPLETION_MODE_INDIVIDUAL; | |
2134 | } | |
2135 | ||
2136 | return props; | |
2137 | } | |
2138 | ||
8802d1fd | 2139 | /* |
b756b9ce SH |
2140 | * 'Atomic' group operations. The operations are performed as a set, and if |
2141 | * any fail then we roll back all operations in the group. | |
8802d1fd | 2142 | */ |
94d16a64 JS |
2143 | void qmp_transaction(TransactionActionList *dev_list, |
2144 | bool has_props, | |
2145 | struct TransactionProperties *props, | |
2146 | Error **errp) | |
8802d1fd | 2147 | { |
c8a83e85 | 2148 | TransactionActionList *dev_entry = dev_list; |
94d16a64 | 2149 | BlockJobTxn *block_job_txn = NULL; |
50f43f0f | 2150 | BlkActionState *state, *next; |
43e17041 | 2151 | Error *local_err = NULL; |
8802d1fd | 2152 | |
50f43f0f | 2153 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states; |
8802d1fd JC |
2154 | QSIMPLEQ_INIT(&snap_bdrv_states); |
2155 | ||
94d16a64 JS |
2156 | /* Does this transaction get canceled as a group on failure? |
2157 | * If not, we don't really need to make a BlockJobTxn. | |
2158 | */ | |
2159 | props = get_transaction_properties(props); | |
2160 | if (props->completion_mode != ACTION_COMPLETION_MODE_INDIVIDUAL) { | |
2161 | block_job_txn = block_job_txn_new(); | |
2162 | } | |
2163 | ||
b756b9ce | 2164 | /* drain all i/o before any operations */ |
8802d1fd JC |
2165 | bdrv_drain_all(); |
2166 | ||
b756b9ce | 2167 | /* We don't do anything in this loop that commits us to the operations */ |
8802d1fd | 2168 | while (NULL != dev_entry) { |
c8a83e85 | 2169 | TransactionAction *dev_info = NULL; |
50f43f0f | 2170 | const BlkActionOps *ops; |
52e7c241 | 2171 | |
8802d1fd JC |
2172 | dev_info = dev_entry->value; |
2173 | dev_entry = dev_entry->next; | |
2174 | ||
6a8f9661 | 2175 | assert(dev_info->type < ARRAY_SIZE(actions)); |
ba0c86a3 | 2176 | |
6a8f9661 | 2177 | ops = &actions[dev_info->type]; |
aa3fe714 HR |
2178 | assert(ops->instance_size > 0); |
2179 | ||
ba5d6ab6 SH |
2180 | state = g_malloc0(ops->instance_size); |
2181 | state->ops = ops; | |
2182 | state->action = dev_info; | |
94d16a64 JS |
2183 | state->block_job_txn = block_job_txn; |
2184 | state->txn_props = props; | |
ba5d6ab6 | 2185 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); |
8802d1fd | 2186 | |
ba5d6ab6 | 2187 | state->ops->prepare(state, &local_err); |
84d18f06 | 2188 | if (local_err) { |
ba0c86a3 WX |
2189 | error_propagate(errp, local_err); |
2190 | goto delete_and_fail; | |
8802d1fd | 2191 | } |
8802d1fd JC |
2192 | } |
2193 | ||
ba5d6ab6 | 2194 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
2195 | if (state->ops->commit) { |
2196 | state->ops->commit(state); | |
2197 | } | |
8802d1fd JC |
2198 | } |
2199 | ||
2200 | /* success */ | |
2201 | goto exit; | |
2202 | ||
2203 | delete_and_fail: | |
b756b9ce | 2204 | /* failure, and it is all-or-none; roll back all operations */ |
ba5d6ab6 SH |
2205 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
2206 | if (state->ops->abort) { | |
2207 | state->ops->abort(state); | |
ba0c86a3 | 2208 | } |
8802d1fd JC |
2209 | } |
2210 | exit: | |
ba5d6ab6 SH |
2211 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
2212 | if (state->ops->clean) { | |
2213 | state->ops->clean(state); | |
ba0c86a3 | 2214 | } |
ba5d6ab6 | 2215 | g_free(state); |
8802d1fd | 2216 | } |
94d16a64 JS |
2217 | if (!has_props) { |
2218 | qapi_free_TransactionProperties(props); | |
2219 | } | |
2220 | block_job_txn_unref(block_job_txn); | |
8802d1fd JC |
2221 | } |
2222 | ||
fbe2d816 KW |
2223 | void qmp_eject(bool has_device, const char *device, |
2224 | bool has_id, const char *id, | |
2225 | bool has_force, bool force, Error **errp) | |
666daa68 | 2226 | { |
38f54bd1 | 2227 | Error *local_err = NULL; |
3a3086b7 JS |
2228 | int rc; |
2229 | ||
2230 | if (!has_force) { | |
2231 | force = false; | |
2232 | } | |
666daa68 | 2233 | |
fbe2d816 KW |
2234 | rc = do_open_tray(has_device ? device : NULL, |
2235 | has_id ? id : NULL, | |
2236 | force, &local_err); | |
bf18bee5 | 2237 | if (rc && rc != -ENOSYS) { |
38f54bd1 | 2238 | error_propagate(errp, local_err); |
c245b6a3 | 2239 | return; |
92d48558 | 2240 | } |
bf18bee5 | 2241 | error_free(local_err); |
3a3086b7 | 2242 | |
fbe2d816 | 2243 | qmp_x_blockdev_remove_medium(has_device, device, has_id, id, errp); |
666daa68 MA |
2244 | } |
2245 | ||
12d3ba82 BC |
2246 | void qmp_block_passwd(bool has_device, const char *device, |
2247 | bool has_node_name, const char *node_name, | |
2248 | const char *password, Error **errp) | |
666daa68 | 2249 | { |
12d3ba82 | 2250 | Error *local_err = NULL; |
666daa68 | 2251 | BlockDriverState *bs; |
e3442099 | 2252 | AioContext *aio_context; |
666daa68 | 2253 | |
12d3ba82 BC |
2254 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
2255 | has_node_name ? node_name : NULL, | |
2256 | &local_err); | |
84d18f06 | 2257 | if (local_err) { |
12d3ba82 | 2258 | error_propagate(errp, local_err); |
a4dea8a9 | 2259 | return; |
666daa68 MA |
2260 | } |
2261 | ||
e3442099 SH |
2262 | aio_context = bdrv_get_aio_context(bs); |
2263 | aio_context_acquire(aio_context); | |
2264 | ||
4d2855a3 | 2265 | bdrv_add_key(bs, password, errp); |
e3442099 | 2266 | |
e3442099 | 2267 | aio_context_release(aio_context); |
666daa68 MA |
2268 | } |
2269 | ||
bf18bee5 CL |
2270 | /* |
2271 | * Attempt to open the tray of @device. | |
2272 | * If @force, ignore its tray lock. | |
2273 | * Else, if the tray is locked, don't open it, but ask the guest to open it. | |
2274 | * On error, store an error through @errp and return -errno. | |
2275 | * If @device does not exist, return -ENODEV. | |
2276 | * If it has no removable media, return -ENOTSUP. | |
2277 | * If it has no tray, return -ENOSYS. | |
2278 | * If the guest was asked to open the tray, return -EINPROGRESS. | |
2279 | * Else, return 0. | |
3a3086b7 | 2280 | */ |
b33945cf KW |
2281 | static int do_open_tray(const char *blk_name, const char *qdev_id, |
2282 | bool force, Error **errp) | |
7d8a9f71 HR |
2283 | { |
2284 | BlockBackend *blk; | |
b33945cf | 2285 | const char *device = qdev_id ?: blk_name; |
7d8a9f71 HR |
2286 | bool locked; |
2287 | ||
b33945cf | 2288 | blk = qmp_get_blk(blk_name, qdev_id, errp); |
7d8a9f71 | 2289 | if (!blk) { |
3a3086b7 | 2290 | return -ENODEV; |
7d8a9f71 HR |
2291 | } |
2292 | ||
2293 | if (!blk_dev_has_removable_media(blk)) { | |
2294 | error_setg(errp, "Device '%s' is not removable", device); | |
3a3086b7 | 2295 | return -ENOTSUP; |
7d8a9f71 HR |
2296 | } |
2297 | ||
12c7ec87 | 2298 | if (!blk_dev_has_tray(blk)) { |
bf18bee5 CL |
2299 | error_setg(errp, "Device '%s' does not have a tray", device); |
2300 | return -ENOSYS; | |
12c7ec87 HR |
2301 | } |
2302 | ||
7d8a9f71 | 2303 | if (blk_dev_is_tray_open(blk)) { |
3a3086b7 | 2304 | return 0; |
7d8a9f71 HR |
2305 | } |
2306 | ||
2307 | locked = blk_dev_is_medium_locked(blk); | |
2308 | if (locked) { | |
2309 | blk_dev_eject_request(blk, force); | |
2310 | } | |
2311 | ||
2312 | if (!locked || force) { | |
2313 | blk_dev_change_media_cb(blk, false); | |
2314 | } | |
3a3086b7 JS |
2315 | |
2316 | if (locked && !force) { | |
bf18bee5 CL |
2317 | error_setg(errp, "Device '%s' is locked and force was not specified, " |
2318 | "wait for tray to open and try again", device); | |
2319 | return -EINPROGRESS; | |
3a3086b7 JS |
2320 | } |
2321 | ||
2322 | return 0; | |
2323 | } | |
2324 | ||
b33945cf KW |
2325 | void qmp_blockdev_open_tray(bool has_device, const char *device, |
2326 | bool has_id, const char *id, | |
2327 | bool has_force, bool force, | |
3a3086b7 JS |
2328 | Error **errp) |
2329 | { | |
bf18bee5 CL |
2330 | Error *local_err = NULL; |
2331 | int rc; | |
2332 | ||
3a3086b7 JS |
2333 | if (!has_force) { |
2334 | force = false; | |
2335 | } | |
b33945cf KW |
2336 | rc = do_open_tray(has_device ? device : NULL, |
2337 | has_id ? id : NULL, | |
2338 | force, &local_err); | |
bf18bee5 CL |
2339 | if (rc && rc != -ENOSYS && rc != -EINPROGRESS) { |
2340 | error_propagate(errp, local_err); | |
2341 | return; | |
2342 | } | |
2343 | error_free(local_err); | |
7d8a9f71 HR |
2344 | } |
2345 | ||
b33945cf KW |
2346 | void qmp_blockdev_close_tray(bool has_device, const char *device, |
2347 | bool has_id, const char *id, | |
2348 | Error **errp) | |
abaaf59d HR |
2349 | { |
2350 | BlockBackend *blk; | |
2351 | ||
b33945cf KW |
2352 | device = has_device ? device : NULL; |
2353 | id = has_id ? id : NULL; | |
2354 | ||
2355 | blk = qmp_get_blk(device, id, errp); | |
abaaf59d | 2356 | if (!blk) { |
abaaf59d HR |
2357 | return; |
2358 | } | |
2359 | ||
2360 | if (!blk_dev_has_removable_media(blk)) { | |
b33945cf | 2361 | error_setg(errp, "Device '%s' is not removable", device ?: id); |
abaaf59d HR |
2362 | return; |
2363 | } | |
2364 | ||
12c7ec87 HR |
2365 | if (!blk_dev_has_tray(blk)) { |
2366 | /* Ignore this command on tray-less devices */ | |
2367 | return; | |
2368 | } | |
2369 | ||
abaaf59d HR |
2370 | if (!blk_dev_is_tray_open(blk)) { |
2371 | return; | |
2372 | } | |
2373 | ||
2374 | blk_dev_change_media_cb(blk, true); | |
2375 | } | |
2376 | ||
00949bab KW |
2377 | void qmp_x_blockdev_remove_medium(bool has_device, const char *device, |
2378 | bool has_id, const char *id, Error **errp) | |
2814f672 HR |
2379 | { |
2380 | BlockBackend *blk; | |
2381 | BlockDriverState *bs; | |
2382 | AioContext *aio_context; | |
00949bab | 2383 | bool has_attached_device; |
2814f672 | 2384 | |
00949bab KW |
2385 | device = has_device ? device : NULL; |
2386 | id = has_id ? id : NULL; | |
2387 | ||
2388 | blk = qmp_get_blk(device, id, errp); | |
2814f672 | 2389 | if (!blk) { |
2814f672 HR |
2390 | return; |
2391 | } | |
2392 | ||
2393 | /* For BBs without a device, we can exchange the BDS tree at will */ | |
00949bab | 2394 | has_attached_device = blk_get_attached_dev(blk); |
2814f672 | 2395 | |
00949bab KW |
2396 | if (has_attached_device && !blk_dev_has_removable_media(blk)) { |
2397 | error_setg(errp, "Device '%s' is not removable", device ?: id); | |
2814f672 HR |
2398 | return; |
2399 | } | |
2400 | ||
00949bab KW |
2401 | if (has_attached_device && blk_dev_has_tray(blk) && |
2402 | !blk_dev_is_tray_open(blk)) | |
2403 | { | |
2404 | error_setg(errp, "Tray of device '%s' is not open", device ?: id); | |
2814f672 HR |
2405 | return; |
2406 | } | |
2407 | ||
2408 | bs = blk_bs(blk); | |
2409 | if (!bs) { | |
2410 | return; | |
2411 | } | |
2412 | ||
2413 | aio_context = bdrv_get_aio_context(bs); | |
2414 | aio_context_acquire(aio_context); | |
2415 | ||
2416 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { | |
2417 | goto out; | |
2418 | } | |
2419 | ||
2814f672 HR |
2420 | blk_remove_bs(blk); |
2421 | ||
12c7ec87 HR |
2422 | if (!blk_dev_has_tray(blk)) { |
2423 | /* For tray-less devices, blockdev-open-tray is a no-op (or may not be | |
2424 | * called at all); therefore, the medium needs to be ejected here. | |
2425 | * Do it after blk_remove_bs() so blk_is_inserted(blk) returns the @load | |
2426 | * value passed here (i.e. false). */ | |
2427 | blk_dev_change_media_cb(blk, false); | |
2428 | } | |
2429 | ||
2814f672 HR |
2430 | out: |
2431 | aio_context_release(aio_context); | |
2432 | } | |
2433 | ||
716df217 | 2434 | static void qmp_blockdev_insert_anon_medium(BlockBackend *blk, |
d1299882 HR |
2435 | BlockDriverState *bs, Error **errp) |
2436 | { | |
d1299882 HR |
2437 | bool has_device; |
2438 | ||
d1299882 HR |
2439 | /* For BBs without a device, we can exchange the BDS tree at will */ |
2440 | has_device = blk_get_attached_dev(blk); | |
2441 | ||
2442 | if (has_device && !blk_dev_has_removable_media(blk)) { | |
716df217 | 2443 | error_setg(errp, "Device is not removable"); |
d1299882 HR |
2444 | return; |
2445 | } | |
2446 | ||
12c7ec87 | 2447 | if (has_device && blk_dev_has_tray(blk) && !blk_dev_is_tray_open(blk)) { |
716df217 | 2448 | error_setg(errp, "Tray of the device is not open"); |
d1299882 HR |
2449 | return; |
2450 | } | |
2451 | ||
2452 | if (blk_bs(blk)) { | |
716df217 | 2453 | error_setg(errp, "There already is a medium in the device"); |
d1299882 HR |
2454 | return; |
2455 | } | |
2456 | ||
2457 | blk_insert_bs(blk, bs); | |
2458 | ||
12c7ec87 HR |
2459 | if (!blk_dev_has_tray(blk)) { |
2460 | /* For tray-less devices, blockdev-close-tray is a no-op (or may not be | |
2461 | * called at all); therefore, the medium needs to be pushed into the | |
2462 | * slot here. | |
2463 | * Do it after blk_insert_bs() so blk_is_inserted(blk) returns the @load | |
2464 | * value passed here (i.e. true). */ | |
2465 | blk_dev_change_media_cb(blk, true); | |
2466 | } | |
d1299882 HR |
2467 | } |
2468 | ||
716df217 KW |
2469 | void qmp_x_blockdev_insert_medium(bool has_device, const char *device, |
2470 | bool has_id, const char *id, | |
2471 | const char *node_name, Error **errp) | |
d1299882 | 2472 | { |
716df217 | 2473 | BlockBackend *blk; |
d1299882 HR |
2474 | BlockDriverState *bs; |
2475 | ||
716df217 KW |
2476 | blk = qmp_get_blk(has_device ? device : NULL, |
2477 | has_id ? id : NULL, | |
2478 | errp); | |
2479 | if (!blk) { | |
2480 | return; | |
2481 | } | |
2482 | ||
d1299882 HR |
2483 | bs = bdrv_find_node(node_name); |
2484 | if (!bs) { | |
2485 | error_setg(errp, "Node '%s' not found", node_name); | |
2486 | return; | |
2487 | } | |
2488 | ||
1f0c461b | 2489 | if (bdrv_has_blk(bs)) { |
e467da7b | 2490 | error_setg(errp, "Node '%s' is already in use", node_name); |
d1299882 HR |
2491 | return; |
2492 | } | |
2493 | ||
716df217 | 2494 | qmp_blockdev_insert_anon_medium(blk, bs, errp); |
d1299882 HR |
2495 | } |
2496 | ||
70e2cb3b KW |
2497 | void qmp_blockdev_change_medium(bool has_device, const char *device, |
2498 | bool has_id, const char *id, | |
2499 | const char *filename, | |
24fb4133 | 2500 | bool has_format, const char *format, |
39ff43d9 HR |
2501 | bool has_read_only, |
2502 | BlockdevChangeReadOnlyMode read_only, | |
24fb4133 | 2503 | Error **errp) |
de2c6c05 HR |
2504 | { |
2505 | BlockBackend *blk; | |
2506 | BlockDriverState *medium_bs = NULL; | |
5b363937 | 2507 | int bdrv_flags; |
b85114f8 | 2508 | bool detect_zeroes; |
38a53d50 | 2509 | int rc; |
de2c6c05 HR |
2510 | QDict *options = NULL; |
2511 | Error *err = NULL; | |
2512 | ||
70e2cb3b KW |
2513 | blk = qmp_get_blk(has_device ? device : NULL, |
2514 | has_id ? id : NULL, | |
2515 | errp); | |
de2c6c05 | 2516 | if (!blk) { |
de2c6c05 HR |
2517 | goto fail; |
2518 | } | |
2519 | ||
2520 | if (blk_bs(blk)) { | |
2521 | blk_update_root_state(blk); | |
2522 | } | |
2523 | ||
2524 | bdrv_flags = blk_get_open_flags_from_root_state(blk); | |
156abc2f AM |
2525 | bdrv_flags &= ~(BDRV_O_TEMPORARY | BDRV_O_SNAPSHOT | BDRV_O_NO_BACKING | |
2526 | BDRV_O_PROTOCOL); | |
de2c6c05 | 2527 | |
39ff43d9 HR |
2528 | if (!has_read_only) { |
2529 | read_only = BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN; | |
2530 | } | |
2531 | ||
2532 | switch (read_only) { | |
2533 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN: | |
2534 | break; | |
2535 | ||
2536 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_ONLY: | |
2537 | bdrv_flags &= ~BDRV_O_RDWR; | |
2538 | break; | |
2539 | ||
2540 | case BLOCKDEV_CHANGE_READ_ONLY_MODE_READ_WRITE: | |
2541 | bdrv_flags |= BDRV_O_RDWR; | |
2542 | break; | |
2543 | ||
2544 | default: | |
2545 | abort(); | |
2546 | } | |
2547 | ||
b85114f8 KW |
2548 | options = qdict_new(); |
2549 | detect_zeroes = blk_get_detect_zeroes_from_root_state(blk); | |
2550 | qdict_put(options, "detect-zeroes", | |
2551 | qstring_from_str(detect_zeroes ? "on" : "off")); | |
2552 | ||
24fb4133 | 2553 | if (has_format) { |
de2c6c05 HR |
2554 | qdict_put(options, "driver", qstring_from_str(format)); |
2555 | } | |
2556 | ||
5b363937 HR |
2557 | medium_bs = bdrv_open(filename, NULL, options, bdrv_flags, errp); |
2558 | if (!medium_bs) { | |
de2c6c05 HR |
2559 | goto fail; |
2560 | } | |
2561 | ||
de2c6c05 HR |
2562 | bdrv_add_key(medium_bs, NULL, &err); |
2563 | if (err) { | |
2564 | error_propagate(errp, err); | |
2565 | goto fail; | |
2566 | } | |
2567 | ||
70e2cb3b KW |
2568 | rc = do_open_tray(has_device ? device : NULL, |
2569 | has_id ? id : NULL, | |
2570 | false, &err); | |
38a53d50 | 2571 | if (rc && rc != -ENOSYS) { |
de2c6c05 HR |
2572 | error_propagate(errp, err); |
2573 | goto fail; | |
2574 | } | |
38a53d50 CL |
2575 | error_free(err); |
2576 | err = NULL; | |
de2c6c05 | 2577 | |
24df38b0 | 2578 | qmp_x_blockdev_remove_medium(has_device, device, has_id, id, &err); |
de2c6c05 HR |
2579 | if (err) { |
2580 | error_propagate(errp, err); | |
2581 | goto fail; | |
2582 | } | |
2583 | ||
716df217 | 2584 | qmp_blockdev_insert_anon_medium(blk, medium_bs, &err); |
de2c6c05 HR |
2585 | if (err) { |
2586 | error_propagate(errp, err); | |
2587 | goto fail; | |
2588 | } | |
2589 | ||
70e2cb3b | 2590 | qmp_blockdev_close_tray(has_device, device, has_id, id, errp); |
de2c6c05 HR |
2591 | |
2592 | fail: | |
2593 | /* If the medium has been inserted, the device has its own reference, so | |
2594 | * ours must be relinquished; and if it has not been inserted successfully, | |
2595 | * the reference must be relinquished anyway */ | |
2596 | bdrv_unref(medium_bs); | |
2597 | } | |
2598 | ||
727f005e | 2599 | /* throttling disk I/O limits */ |
4dc9397b | 2600 | void qmp_block_set_io_throttle(BlockIOThrottle *arg, Error **errp) |
727f005e | 2601 | { |
cc0681c4 | 2602 | ThrottleConfig cfg; |
727f005e | 2603 | BlockDriverState *bs; |
a0e8544c | 2604 | BlockBackend *blk; |
b15446fd | 2605 | AioContext *aio_context; |
727f005e | 2606 | |
7a9877a0 KW |
2607 | blk = qmp_get_blk(arg->has_device ? arg->device : NULL, |
2608 | arg->has_id ? arg->id : NULL, | |
2609 | errp); | |
a0e8544c | 2610 | if (!blk) { |
80047da5 | 2611 | return; |
727f005e | 2612 | } |
5433c24f HR |
2613 | |
2614 | aio_context = blk_get_aio_context(blk); | |
2615 | aio_context_acquire(aio_context); | |
2616 | ||
a0e8544c | 2617 | bs = blk_bs(blk); |
5433c24f | 2618 | if (!bs) { |
7a9877a0 | 2619 | error_setg(errp, "Device has no medium"); |
5433c24f HR |
2620 | goto out; |
2621 | } | |
727f005e | 2622 | |
1588ab5d | 2623 | throttle_config_init(&cfg); |
4dc9397b EB |
2624 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = arg->bps; |
2625 | cfg.buckets[THROTTLE_BPS_READ].avg = arg->bps_rd; | |
2626 | cfg.buckets[THROTTLE_BPS_WRITE].avg = arg->bps_wr; | |
cc0681c4 | 2627 | |
4dc9397b EB |
2628 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = arg->iops; |
2629 | cfg.buckets[THROTTLE_OPS_READ].avg = arg->iops_rd; | |
2630 | cfg.buckets[THROTTLE_OPS_WRITE].avg = arg->iops_wr; | |
cc0681c4 | 2631 | |
4dc9397b EB |
2632 | if (arg->has_bps_max) { |
2633 | cfg.buckets[THROTTLE_BPS_TOTAL].max = arg->bps_max; | |
3e9fab69 | 2634 | } |
4dc9397b EB |
2635 | if (arg->has_bps_rd_max) { |
2636 | cfg.buckets[THROTTLE_BPS_READ].max = arg->bps_rd_max; | |
3e9fab69 | 2637 | } |
4dc9397b EB |
2638 | if (arg->has_bps_wr_max) { |
2639 | cfg.buckets[THROTTLE_BPS_WRITE].max = arg->bps_wr_max; | |
3e9fab69 | 2640 | } |
4dc9397b EB |
2641 | if (arg->has_iops_max) { |
2642 | cfg.buckets[THROTTLE_OPS_TOTAL].max = arg->iops_max; | |
3e9fab69 | 2643 | } |
4dc9397b EB |
2644 | if (arg->has_iops_rd_max) { |
2645 | cfg.buckets[THROTTLE_OPS_READ].max = arg->iops_rd_max; | |
3e9fab69 | 2646 | } |
4dc9397b EB |
2647 | if (arg->has_iops_wr_max) { |
2648 | cfg.buckets[THROTTLE_OPS_WRITE].max = arg->iops_wr_max; | |
3e9fab69 | 2649 | } |
727f005e | 2650 | |
4dc9397b EB |
2651 | if (arg->has_bps_max_length) { |
2652 | cfg.buckets[THROTTLE_BPS_TOTAL].burst_length = arg->bps_max_length; | |
dce13204 | 2653 | } |
4dc9397b EB |
2654 | if (arg->has_bps_rd_max_length) { |
2655 | cfg.buckets[THROTTLE_BPS_READ].burst_length = arg->bps_rd_max_length; | |
dce13204 | 2656 | } |
4dc9397b EB |
2657 | if (arg->has_bps_wr_max_length) { |
2658 | cfg.buckets[THROTTLE_BPS_WRITE].burst_length = arg->bps_wr_max_length; | |
dce13204 | 2659 | } |
4dc9397b EB |
2660 | if (arg->has_iops_max_length) { |
2661 | cfg.buckets[THROTTLE_OPS_TOTAL].burst_length = arg->iops_max_length; | |
dce13204 | 2662 | } |
4dc9397b EB |
2663 | if (arg->has_iops_rd_max_length) { |
2664 | cfg.buckets[THROTTLE_OPS_READ].burst_length = arg->iops_rd_max_length; | |
dce13204 | 2665 | } |
4dc9397b EB |
2666 | if (arg->has_iops_wr_max_length) { |
2667 | cfg.buckets[THROTTLE_OPS_WRITE].burst_length = arg->iops_wr_max_length; | |
dce13204 AG |
2668 | } |
2669 | ||
4dc9397b EB |
2670 | if (arg->has_iops_size) { |
2671 | cfg.op_size = arg->iops_size; | |
2024c1df | 2672 | } |
cc0681c4 | 2673 | |
d5851089 | 2674 | if (!throttle_is_valid(&cfg, errp)) { |
5433c24f | 2675 | goto out; |
727f005e ZYW |
2676 | } |
2677 | ||
76f4afb4 AG |
2678 | if (throttle_enabled(&cfg)) { |
2679 | /* Enable I/O limits if they're not enabled yet, otherwise | |
2680 | * just update the throttling group. */ | |
97148076 | 2681 | if (!blk_get_public(blk)->throttle_state) { |
4dc9397b | 2682 | blk_io_limits_enable(blk, |
7a9877a0 KW |
2683 | arg->has_group ? arg->group : |
2684 | arg->has_device ? arg->device : | |
2685 | arg->id); | |
4dc9397b EB |
2686 | } else if (arg->has_group) { |
2687 | blk_io_limits_update_group(blk, arg->group); | |
76f4afb4 AG |
2688 | } |
2689 | /* Set the new throttling configuration */ | |
97148076 KW |
2690 | blk_set_io_limits(blk, &cfg); |
2691 | } else if (blk_get_public(blk)->throttle_state) { | |
76f4afb4 | 2692 | /* If all throttling settings are set to 0, disable I/O limits */ |
97148076 | 2693 | blk_io_limits_disable(blk); |
727f005e | 2694 | } |
b15446fd | 2695 | |
5433c24f | 2696 | out: |
b15446fd | 2697 | aio_context_release(aio_context); |
727f005e ZYW |
2698 | } |
2699 | ||
341ebc2f JS |
2700 | void qmp_block_dirty_bitmap_add(const char *node, const char *name, |
2701 | bool has_granularity, uint32_t granularity, | |
2702 | Error **errp) | |
2703 | { | |
2704 | AioContext *aio_context; | |
2705 | BlockDriverState *bs; | |
2706 | ||
2707 | if (!name || name[0] == '\0') { | |
2708 | error_setg(errp, "Bitmap name cannot be empty"); | |
2709 | return; | |
2710 | } | |
2711 | ||
2712 | bs = bdrv_lookup_bs(node, node, errp); | |
2713 | if (!bs) { | |
2714 | return; | |
2715 | } | |
2716 | ||
2717 | aio_context = bdrv_get_aio_context(bs); | |
2718 | aio_context_acquire(aio_context); | |
2719 | ||
2720 | if (has_granularity) { | |
2721 | if (granularity < 512 || !is_power_of_2(granularity)) { | |
2722 | error_setg(errp, "Granularity must be power of 2 " | |
2723 | "and at least 512"); | |
2724 | goto out; | |
2725 | } | |
2726 | } else { | |
2727 | /* Default to cluster size, if available: */ | |
2728 | granularity = bdrv_get_default_bitmap_granularity(bs); | |
2729 | } | |
2730 | ||
2731 | bdrv_create_dirty_bitmap(bs, granularity, name, errp); | |
2732 | ||
2733 | out: | |
2734 | aio_context_release(aio_context); | |
2735 | } | |
2736 | ||
2737 | void qmp_block_dirty_bitmap_remove(const char *node, const char *name, | |
2738 | Error **errp) | |
2739 | { | |
2740 | AioContext *aio_context; | |
2741 | BlockDriverState *bs; | |
2742 | BdrvDirtyBitmap *bitmap; | |
2743 | ||
2744 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); | |
2745 | if (!bitmap || !bs) { | |
2746 | return; | |
2747 | } | |
2748 | ||
9bd2b08f JS |
2749 | if (bdrv_dirty_bitmap_frozen(bitmap)) { |
2750 | error_setg(errp, | |
2751 | "Bitmap '%s' is currently frozen and cannot be removed", | |
2752 | name); | |
2753 | goto out; | |
2754 | } | |
20dca810 | 2755 | bdrv_dirty_bitmap_make_anon(bitmap); |
341ebc2f JS |
2756 | bdrv_release_dirty_bitmap(bs, bitmap); |
2757 | ||
9bd2b08f | 2758 | out: |
341ebc2f JS |
2759 | aio_context_release(aio_context); |
2760 | } | |
2761 | ||
e74e6b78 JS |
2762 | /** |
2763 | * Completely clear a bitmap, for the purposes of synchronizing a bitmap | |
2764 | * immediately after a full backup operation. | |
2765 | */ | |
2766 | void qmp_block_dirty_bitmap_clear(const char *node, const char *name, | |
2767 | Error **errp) | |
2768 | { | |
2769 | AioContext *aio_context; | |
2770 | BdrvDirtyBitmap *bitmap; | |
2771 | BlockDriverState *bs; | |
2772 | ||
2773 | bitmap = block_dirty_bitmap_lookup(node, name, &bs, &aio_context, errp); | |
2774 | if (!bitmap || !bs) { | |
2775 | return; | |
2776 | } | |
2777 | ||
2778 | if (bdrv_dirty_bitmap_frozen(bitmap)) { | |
2779 | error_setg(errp, | |
2780 | "Bitmap '%s' is currently frozen and cannot be modified", | |
2781 | name); | |
2782 | goto out; | |
2783 | } else if (!bdrv_dirty_bitmap_enabled(bitmap)) { | |
2784 | error_setg(errp, | |
2785 | "Bitmap '%s' is currently disabled and cannot be cleared", | |
2786 | name); | |
2787 | goto out; | |
2788 | } | |
2789 | ||
df9a681d | 2790 | bdrv_clear_dirty_bitmap(bitmap, NULL); |
e74e6b78 JS |
2791 | |
2792 | out: | |
2793 | aio_context_release(aio_context); | |
2794 | } | |
2795 | ||
072ebe6b | 2796 | void hmp_drive_del(Monitor *mon, const QDict *qdict) |
9063f814 RH |
2797 | { |
2798 | const char *id = qdict_get_str(qdict, "id"); | |
7e7d56d9 | 2799 | BlockBackend *blk; |
9063f814 | 2800 | BlockDriverState *bs; |
8ad4202b | 2801 | AioContext *aio_context; |
3718d8ab | 2802 | Error *local_err = NULL; |
9063f814 | 2803 | |
2073d410 KW |
2804 | bs = bdrv_find_node(id); |
2805 | if (bs) { | |
9ec8873e | 2806 | qmp_x_blockdev_del(id, &local_err); |
2073d410 KW |
2807 | if (local_err) { |
2808 | error_report_err(local_err); | |
2809 | } | |
2810 | return; | |
2811 | } | |
2812 | ||
7e7d56d9 MA |
2813 | blk = blk_by_name(id); |
2814 | if (!blk) { | |
b1422f20 | 2815 | error_report("Device '%s' not found", id); |
072ebe6b | 2816 | return; |
9063f814 | 2817 | } |
8ad4202b | 2818 | |
26f8b3a8 | 2819 | if (!blk_legacy_dinfo(blk)) { |
48f364dd MA |
2820 | error_report("Deleting device added with blockdev-add" |
2821 | " is not supported"); | |
072ebe6b | 2822 | return; |
48f364dd MA |
2823 | } |
2824 | ||
5433c24f | 2825 | aio_context = blk_get_aio_context(blk); |
8ad4202b SH |
2826 | aio_context_acquire(aio_context); |
2827 | ||
5433c24f HR |
2828 | bs = blk_bs(blk); |
2829 | if (bs) { | |
2830 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { | |
2831 | error_report_err(local_err); | |
2832 | aio_context_release(aio_context); | |
2833 | return; | |
2834 | } | |
9063f814 | 2835 | |
938abd43 | 2836 | blk_remove_bs(blk); |
5433c24f | 2837 | } |
9063f814 | 2838 | |
7c735873 | 2839 | /* Make the BlockBackend and the attached BlockDriverState anonymous */ |
efaa7c4e HR |
2840 | monitor_remove_blk(blk); |
2841 | ||
7c735873 HR |
2842 | /* If this BlockBackend has a device attached to it, its refcount will be |
2843 | * decremented when the device is removed; otherwise we have to do so here. | |
d22b2f41 | 2844 | */ |
a7f53e26 | 2845 | if (blk_get_attached_dev(blk)) { |
293c51a6 | 2846 | /* Further I/O must not pause the guest */ |
373340b2 HR |
2847 | blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, |
2848 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 2849 | } else { |
b9fe8a7a | 2850 | blk_unref(blk); |
9063f814 RH |
2851 | } |
2852 | ||
8ad4202b | 2853 | aio_context_release(aio_context); |
9063f814 | 2854 | } |
6d4a2b3a | 2855 | |
3b1dbd11 BC |
2856 | void qmp_block_resize(bool has_device, const char *device, |
2857 | bool has_node_name, const char *node_name, | |
2858 | int64_t size, Error **errp) | |
6d4a2b3a | 2859 | { |
3b1dbd11 | 2860 | Error *local_err = NULL; |
6d4a2b3a | 2861 | BlockDriverState *bs; |
927e0e76 | 2862 | AioContext *aio_context; |
8732901e | 2863 | int ret; |
6d4a2b3a | 2864 | |
3b1dbd11 BC |
2865 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
2866 | has_node_name ? node_name : NULL, | |
2867 | &local_err); | |
84d18f06 | 2868 | if (local_err) { |
3b1dbd11 BC |
2869 | error_propagate(errp, local_err); |
2870 | return; | |
2871 | } | |
2872 | ||
927e0e76 SH |
2873 | aio_context = bdrv_get_aio_context(bs); |
2874 | aio_context_acquire(aio_context); | |
2875 | ||
3b1dbd11 | 2876 | if (!bdrv_is_first_non_filter(bs)) { |
c6bd8c70 | 2877 | error_setg(errp, QERR_FEATURE_DISABLED, "resize"); |
927e0e76 | 2878 | goto out; |
6d4a2b3a CH |
2879 | } |
2880 | ||
2881 | if (size < 0) { | |
c6bd8c70 | 2882 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 2883 | goto out; |
6d4a2b3a CH |
2884 | } |
2885 | ||
9c75e168 | 2886 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
c6bd8c70 | 2887 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
927e0e76 | 2888 | goto out; |
9c75e168 JC |
2889 | } |
2890 | ||
92b7a08d PL |
2891 | /* complete all in-flight operations before resizing the device */ |
2892 | bdrv_drain_all(); | |
2893 | ||
8732901e KW |
2894 | ret = bdrv_truncate(bs, size); |
2895 | switch (ret) { | |
939a1cc3 SH |
2896 | case 0: |
2897 | break; | |
2898 | case -ENOMEDIUM: | |
c6bd8c70 | 2899 | error_setg(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
939a1cc3 SH |
2900 | break; |
2901 | case -ENOTSUP: | |
c6bd8c70 | 2902 | error_setg(errp, QERR_UNSUPPORTED); |
939a1cc3 SH |
2903 | break; |
2904 | case -EACCES: | |
81e5f78a | 2905 | error_setg(errp, "Device '%s' is read only", device); |
939a1cc3 SH |
2906 | break; |
2907 | case -EBUSY: | |
c6bd8c70 | 2908 | error_setg(errp, QERR_DEVICE_IN_USE, device); |
939a1cc3 SH |
2909 | break; |
2910 | default: | |
8732901e | 2911 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 2912 | break; |
6d4a2b3a | 2913 | } |
927e0e76 SH |
2914 | |
2915 | out: | |
2916 | aio_context_release(aio_context); | |
6d4a2b3a | 2917 | } |
12bd451f | 2918 | |
2323322e | 2919 | void qmp_block_stream(bool has_job_id, const char *job_id, const char *device, |
13d8cc51 | 2920 | bool has_base, const char *base, |
312fe09c | 2921 | bool has_base_node, const char *base_node, |
13d8cc51 JC |
2922 | bool has_backing_file, const char *backing_file, |
2923 | bool has_speed, int64_t speed, | |
1d809098 PB |
2924 | bool has_on_error, BlockdevOnError on_error, |
2925 | Error **errp) | |
12bd451f | 2926 | { |
554b6147 | 2927 | BlockDriverState *bs, *iter; |
c8c3080f | 2928 | BlockDriverState *base_bs = NULL; |
f3e69beb | 2929 | AioContext *aio_context; |
fd7f8c65 | 2930 | Error *local_err = NULL; |
13d8cc51 | 2931 | const char *base_name = NULL; |
12bd451f | 2932 | |
1d809098 PB |
2933 | if (!has_on_error) { |
2934 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
2935 | } | |
2936 | ||
554b6147 | 2937 | bs = bdrv_lookup_bs(device, device, errp); |
b6c1bae5 | 2938 | if (!bs) { |
12bd451f SH |
2939 | return; |
2940 | } | |
2941 | ||
b6c1bae5 | 2942 | aio_context = bdrv_get_aio_context(bs); |
f3e69beb SH |
2943 | aio_context_acquire(aio_context); |
2944 | ||
312fe09c AG |
2945 | if (has_base && has_base_node) { |
2946 | error_setg(errp, "'base' and 'base-node' cannot be specified " | |
2947 | "at the same time"); | |
2948 | goto out; | |
2949 | } | |
2950 | ||
13d8cc51 | 2951 | if (has_base) { |
c8c3080f MT |
2952 | base_bs = bdrv_find_backing_image(bs, base); |
2953 | if (base_bs == NULL) { | |
c6bd8c70 | 2954 | error_setg(errp, QERR_BASE_NOT_FOUND, base); |
f3e69beb | 2955 | goto out; |
c8c3080f | 2956 | } |
f3e69beb | 2957 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
13d8cc51 | 2958 | base_name = base; |
12bd451f SH |
2959 | } |
2960 | ||
312fe09c AG |
2961 | if (has_base_node) { |
2962 | base_bs = bdrv_lookup_bs(NULL, base_node, errp); | |
2963 | if (!base_bs) { | |
2964 | goto out; | |
2965 | } | |
2966 | if (bs == base_bs || !bdrv_chain_contains(bs, base_bs)) { | |
2967 | error_setg(errp, "Node '%s' is not a backing image of '%s'", | |
2968 | base_node, device); | |
2969 | goto out; | |
2970 | } | |
2971 | assert(bdrv_get_aio_context(base_bs) == aio_context); | |
2972 | base_name = base_bs->filename; | |
2973 | } | |
2974 | ||
554b6147 AG |
2975 | /* Check for op blockers in the whole chain between bs and base */ |
2976 | for (iter = bs; iter && iter != base_bs; iter = backing_bs(iter)) { | |
2977 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_STREAM, errp)) { | |
2978 | goto out; | |
2979 | } | |
2980 | } | |
2981 | ||
13d8cc51 JC |
2982 | /* if we are streaming the entire chain, the result will have no backing |
2983 | * file, and specifying one is therefore an error */ | |
2984 | if (base_bs == NULL && has_backing_file) { | |
2985 | error_setg(errp, "backing file specified, but streaming the " | |
2986 | "entire chain"); | |
f3e69beb | 2987 | goto out; |
13d8cc51 JC |
2988 | } |
2989 | ||
2990 | /* backing_file string overrides base bs filename */ | |
2991 | base_name = has_backing_file ? backing_file : base_name; | |
2992 | ||
2323322e | 2993 | stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name, |
8254b6d9 | 2994 | has_speed ? speed : 0, on_error, &local_err); |
84d18f06 | 2995 | if (local_err) { |
fd7f8c65 | 2996 | error_propagate(errp, local_err); |
f3e69beb | 2997 | goto out; |
12bd451f SH |
2998 | } |
2999 | ||
3000 | trace_qmp_block_stream(bs, bs->job); | |
f3e69beb SH |
3001 | |
3002 | out: | |
3003 | aio_context_release(aio_context); | |
12bd451f | 3004 | } |
2d47c6e9 | 3005 | |
fd62c609 | 3006 | void qmp_block_commit(bool has_job_id, const char *job_id, const char *device, |
7676e2c5 JC |
3007 | bool has_base, const char *base, |
3008 | bool has_top, const char *top, | |
54e26900 | 3009 | bool has_backing_file, const char *backing_file, |
ed61fc10 JC |
3010 | bool has_speed, int64_t speed, |
3011 | Error **errp) | |
3012 | { | |
3013 | BlockDriverState *bs; | |
058223a6 | 3014 | BlockDriverState *iter; |
ed61fc10 | 3015 | BlockDriverState *base_bs, *top_bs; |
9e85cd5c | 3016 | AioContext *aio_context; |
ed61fc10 JC |
3017 | Error *local_err = NULL; |
3018 | /* This will be part of the QMP command, if/when the | |
3019 | * BlockdevOnError change for blkmirror makes it in | |
3020 | */ | |
92aa5c6d | 3021 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 | 3022 | |
54504663 HR |
3023 | if (!has_speed) { |
3024 | speed = 0; | |
3025 | } | |
3026 | ||
7676e2c5 JC |
3027 | /* Important Note: |
3028 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
3029 | * live commit feature versions; for this to work, we must make sure to | |
3030 | * perform the device lookup before any generic errors that may occur in a | |
3031 | * scenario in which all optional arguments are omitted. */ | |
1d13b167 KW |
3032 | bs = qmp_get_root_bs(device, &local_err); |
3033 | if (!bs) { | |
3034 | bs = bdrv_lookup_bs(device, device, NULL); | |
3035 | if (!bs) { | |
3036 | error_free(local_err); | |
3037 | error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, | |
3038 | "Device '%s' not found", device); | |
3039 | } else { | |
3040 | error_propagate(errp, local_err); | |
3041 | } | |
ed61fc10 | 3042 | return; |
628ff683 FZ |
3043 | } |
3044 | ||
1d13b167 | 3045 | aio_context = bdrv_get_aio_context(bs); |
9e85cd5c SH |
3046 | aio_context_acquire(aio_context); |
3047 | ||
bb00021d | 3048 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
9e85cd5c | 3049 | goto out; |
ed61fc10 | 3050 | } |
ed61fc10 JC |
3051 | |
3052 | /* default top_bs is the active layer */ | |
3053 | top_bs = bs; | |
3054 | ||
7676e2c5 | 3055 | if (has_top && top) { |
ed61fc10 JC |
3056 | if (strcmp(bs->filename, top) != 0) { |
3057 | top_bs = bdrv_find_backing_image(bs, top); | |
3058 | } | |
3059 | } | |
3060 | ||
3061 | if (top_bs == NULL) { | |
3062 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
9e85cd5c | 3063 | goto out; |
ed61fc10 JC |
3064 | } |
3065 | ||
9e85cd5c SH |
3066 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
3067 | ||
d5208c45 JC |
3068 | if (has_base && base) { |
3069 | base_bs = bdrv_find_backing_image(top_bs, base); | |
3070 | } else { | |
3071 | base_bs = bdrv_find_base(top_bs); | |
3072 | } | |
3073 | ||
3074 | if (base_bs == NULL) { | |
c6bd8c70 | 3075 | error_setg(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); |
9e85cd5c | 3076 | goto out; |
d5208c45 JC |
3077 | } |
3078 | ||
9e85cd5c SH |
3079 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
3080 | ||
058223a6 AG |
3081 | for (iter = top_bs; iter != backing_bs(base_bs); iter = backing_bs(iter)) { |
3082 | if (bdrv_op_is_blocked(iter, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { | |
3083 | goto out; | |
3084 | } | |
bb00021d FZ |
3085 | } |
3086 | ||
7676e2c5 JC |
3087 | /* Do not allow attempts to commit an image into itself */ |
3088 | if (top_bs == base_bs) { | |
3089 | error_setg(errp, "cannot commit an image into itself"); | |
9e85cd5c | 3090 | goto out; |
7676e2c5 JC |
3091 | } |
3092 | ||
20a63d2c | 3093 | if (top_bs == bs) { |
54e26900 JC |
3094 | if (has_backing_file) { |
3095 | error_setg(errp, "'backing-file' specified," | |
3096 | " but 'top' is the active layer"); | |
9e85cd5c | 3097 | goto out; |
54e26900 | 3098 | } |
47970dfb | 3099 | commit_active_start(has_job_id ? job_id : NULL, bs, base_bs, |
8254b6d9 JS |
3100 | BLOCK_JOB_DEFAULT, speed, on_error, NULL, NULL, |
3101 | &local_err, false); | |
20a63d2c | 3102 | } else { |
058223a6 AG |
3103 | BlockDriverState *overlay_bs = bdrv_find_overlay(bs, top_bs); |
3104 | if (bdrv_op_is_blocked(overlay_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { | |
3105 | goto out; | |
3106 | } | |
fd62c609 | 3107 | commit_start(has_job_id ? job_id : NULL, bs, base_bs, top_bs, speed, |
8254b6d9 JS |
3108 | on_error, has_backing_file ? backing_file : NULL, |
3109 | &local_err); | |
20a63d2c | 3110 | } |
ed61fc10 JC |
3111 | if (local_err != NULL) { |
3112 | error_propagate(errp, local_err); | |
9e85cd5c | 3113 | goto out; |
ed61fc10 | 3114 | } |
9e85cd5c SH |
3115 | |
3116 | out: | |
3117 | aio_context_release(aio_context); | |
ed61fc10 JC |
3118 | } |
3119 | ||
111049a4 JS |
3120 | static BlockJob *do_drive_backup(DriveBackup *backup, BlockJobTxn *txn, |
3121 | Error **errp) | |
99a9addf SH |
3122 | { |
3123 | BlockDriverState *bs; | |
3124 | BlockDriverState *target_bs; | |
fc5d3f84 | 3125 | BlockDriverState *source = NULL; |
111049a4 | 3126 | BlockJob *job = NULL; |
d58d8453 | 3127 | BdrvDirtyBitmap *bmap = NULL; |
761731b1 | 3128 | AioContext *aio_context; |
e6641719 | 3129 | QDict *options = NULL; |
99a9addf SH |
3130 | Error *local_err = NULL; |
3131 | int flags; | |
3132 | int64_t size; | |
99a9addf | 3133 | |
81206a89 PB |
3134 | if (!backup->has_speed) { |
3135 | backup->speed = 0; | |
99a9addf | 3136 | } |
81206a89 PB |
3137 | if (!backup->has_on_source_error) { |
3138 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
99a9addf | 3139 | } |
81206a89 PB |
3140 | if (!backup->has_on_target_error) { |
3141 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
99a9addf | 3142 | } |
81206a89 PB |
3143 | if (!backup->has_mode) { |
3144 | backup->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
3145 | } | |
3146 | if (!backup->has_job_id) { | |
3147 | backup->job_id = NULL; | |
99a9addf | 3148 | } |
13b9414b PB |
3149 | if (!backup->has_compress) { |
3150 | backup->compress = false; | |
3151 | } | |
99a9addf | 3152 | |
81206a89 | 3153 | bs = qmp_get_root_bs(backup->device, errp); |
b7e4fa22 | 3154 | if (!bs) { |
111049a4 | 3155 | return NULL; |
99a9addf SH |
3156 | } |
3157 | ||
b7e4fa22 | 3158 | aio_context = bdrv_get_aio_context(bs); |
761731b1 SH |
3159 | aio_context_acquire(aio_context); |
3160 | ||
81206a89 PB |
3161 | if (!backup->has_format) { |
3162 | backup->format = backup->mode == NEW_IMAGE_MODE_EXISTING ? | |
3163 | NULL : (char*) bs->drv->format_name; | |
99a9addf | 3164 | } |
99a9addf | 3165 | |
c29c1dd3 | 3166 | /* Early check to avoid creating target */ |
3718d8ab | 3167 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
761731b1 | 3168 | goto out; |
99a9addf SH |
3169 | } |
3170 | ||
61de4c68 | 3171 | flags = bs->open_flags | BDRV_O_RDWR; |
99a9addf | 3172 | |
fc5d3f84 IM |
3173 | /* See if we have a backing HD we can use to create our new image |
3174 | * on top of. */ | |
81206a89 | 3175 | if (backup->sync == MIRROR_SYNC_MODE_TOP) { |
760e0063 | 3176 | source = backing_bs(bs); |
fc5d3f84 | 3177 | if (!source) { |
81206a89 | 3178 | backup->sync = MIRROR_SYNC_MODE_FULL; |
fc5d3f84 IM |
3179 | } |
3180 | } | |
81206a89 | 3181 | if (backup->sync == MIRROR_SYNC_MODE_NONE) { |
fc5d3f84 IM |
3182 | source = bs; |
3183 | } | |
3184 | ||
99a9addf SH |
3185 | size = bdrv_getlength(bs); |
3186 | if (size < 0) { | |
3187 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
761731b1 | 3188 | goto out; |
99a9addf SH |
3189 | } |
3190 | ||
81206a89 PB |
3191 | if (backup->mode != NEW_IMAGE_MODE_EXISTING) { |
3192 | assert(backup->format); | |
fc5d3f84 | 3193 | if (source) { |
81206a89 | 3194 | bdrv_img_create(backup->target, backup->format, source->filename, |
fc5d3f84 IM |
3195 | source->drv->format_name, NULL, |
3196 | size, flags, &local_err, false); | |
3197 | } else { | |
81206a89 | 3198 | bdrv_img_create(backup->target, backup->format, NULL, NULL, NULL, |
fc5d3f84 IM |
3199 | size, flags, &local_err, false); |
3200 | } | |
99a9addf SH |
3201 | } |
3202 | ||
84d18f06 | 3203 | if (local_err) { |
99a9addf | 3204 | error_propagate(errp, local_err); |
761731b1 | 3205 | goto out; |
99a9addf SH |
3206 | } |
3207 | ||
81206a89 | 3208 | if (backup->format) { |
e6641719 | 3209 | options = qdict_new(); |
81206a89 | 3210 | qdict_put(options, "driver", qstring_from_str(backup->format)); |
e6641719 HR |
3211 | } |
3212 | ||
81206a89 | 3213 | target_bs = bdrv_open(backup->target, NULL, options, flags, errp); |
5b363937 | 3214 | if (!target_bs) { |
761731b1 | 3215 | goto out; |
99a9addf SH |
3216 | } |
3217 | ||
761731b1 SH |
3218 | bdrv_set_aio_context(target_bs, aio_context); |
3219 | ||
81206a89 PB |
3220 | if (backup->has_bitmap) { |
3221 | bmap = bdrv_find_dirty_bitmap(bs, backup->bitmap); | |
d58d8453 | 3222 | if (!bmap) { |
81206a89 | 3223 | error_setg(errp, "Bitmap '%s' could not be found", backup->bitmap); |
0702d3d8 | 3224 | bdrv_unref(target_bs); |
d58d8453 JS |
3225 | goto out; |
3226 | } | |
3227 | } | |
3228 | ||
111049a4 JS |
3229 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
3230 | backup->sync, bmap, backup->compress, | |
3231 | backup->on_source_error, backup->on_target_error, | |
3232 | BLOCK_JOB_DEFAULT, NULL, NULL, txn, &local_err); | |
5c438bc6 | 3233 | bdrv_unref(target_bs); |
99a9addf | 3234 | if (local_err != NULL) { |
99a9addf | 3235 | error_propagate(errp, local_err); |
761731b1 | 3236 | goto out; |
99a9addf | 3237 | } |
761731b1 SH |
3238 | |
3239 | out: | |
3240 | aio_context_release(aio_context); | |
111049a4 | 3241 | return job; |
99a9addf SH |
3242 | } |
3243 | ||
81206a89 | 3244 | void qmp_drive_backup(DriveBackup *arg, Error **errp) |
78f51fde | 3245 | { |
111049a4 JS |
3246 | |
3247 | BlockJob *job; | |
3248 | job = do_drive_backup(arg, NULL, errp); | |
3249 | if (job) { | |
3250 | block_job_start(job); | |
3251 | } | |
78f51fde JS |
3252 | } |
3253 | ||
c13163fb BC |
3254 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
3255 | { | |
d5a8ee60 | 3256 | return bdrv_named_nodes_list(errp); |
c13163fb BC |
3257 | } |
3258 | ||
111049a4 JS |
3259 | BlockJob *do_blockdev_backup(BlockdevBackup *backup, BlockJobTxn *txn, |
3260 | Error **errp) | |
c29c1dd3 FZ |
3261 | { |
3262 | BlockDriverState *bs; | |
3263 | BlockDriverState *target_bs; | |
3264 | Error *local_err = NULL; | |
3265 | AioContext *aio_context; | |
111049a4 | 3266 | BlockJob *job = NULL; |
c29c1dd3 | 3267 | |
dc7a4a9e PB |
3268 | if (!backup->has_speed) { |
3269 | backup->speed = 0; | |
c29c1dd3 | 3270 | } |
dc7a4a9e PB |
3271 | if (!backup->has_on_source_error) { |
3272 | backup->on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3273 | } | |
3274 | if (!backup->has_on_target_error) { | |
3275 | backup->on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
c29c1dd3 | 3276 | } |
dc7a4a9e PB |
3277 | if (!backup->has_job_id) { |
3278 | backup->job_id = NULL; | |
c29c1dd3 | 3279 | } |
3b7b1236 PB |
3280 | if (!backup->has_compress) { |
3281 | backup->compress = false; | |
3282 | } | |
c29c1dd3 | 3283 | |
dc7a4a9e | 3284 | bs = qmp_get_root_bs(backup->device, errp); |
cef34eeb | 3285 | if (!bs) { |
111049a4 | 3286 | return NULL; |
c29c1dd3 FZ |
3287 | } |
3288 | ||
cef34eeb | 3289 | aio_context = bdrv_get_aio_context(bs); |
c29c1dd3 FZ |
3290 | aio_context_acquire(aio_context); |
3291 | ||
dc7a4a9e | 3292 | target_bs = bdrv_lookup_bs(backup->target, backup->target, errp); |
0d978913 | 3293 | if (!target_bs) { |
5433c24f HR |
3294 | goto out; |
3295 | } | |
c29c1dd3 | 3296 | |
efd75567 FZ |
3297 | if (bdrv_get_aio_context(target_bs) != aio_context) { |
3298 | if (!bdrv_has_blk(target_bs)) { | |
3299 | /* The target BDS is not attached, we can safely move it to another | |
3300 | * AioContext. */ | |
3301 | bdrv_set_aio_context(target_bs, aio_context); | |
3302 | } else { | |
3303 | error_setg(errp, "Target is attached to a different thread from " | |
3304 | "source."); | |
3305 | goto out; | |
3306 | } | |
3307 | } | |
111049a4 JS |
3308 | job = backup_job_create(backup->job_id, bs, target_bs, backup->speed, |
3309 | backup->sync, NULL, backup->compress, | |
3310 | backup->on_source_error, backup->on_target_error, | |
3311 | BLOCK_JOB_DEFAULT, NULL, NULL, txn, &local_err); | |
c29c1dd3 | 3312 | if (local_err != NULL) { |
c29c1dd3 FZ |
3313 | error_propagate(errp, local_err); |
3314 | } | |
3315 | out: | |
3316 | aio_context_release(aio_context); | |
111049a4 | 3317 | return job; |
c29c1dd3 FZ |
3318 | } |
3319 | ||
dc7a4a9e PB |
3320 | void qmp_blockdev_backup(BlockdevBackup *arg, Error **errp) |
3321 | { | |
111049a4 JS |
3322 | BlockJob *job; |
3323 | job = do_blockdev_backup(arg, NULL, errp); | |
3324 | if (job) { | |
3325 | block_job_start(job); | |
3326 | } | |
78f51fde JS |
3327 | } |
3328 | ||
4193cdd7 FZ |
3329 | /* Parameter check and block job starting for drive mirroring. |
3330 | * Caller should hold @device and @target's aio context (must be the same). | |
3331 | **/ | |
71aa9867 | 3332 | static void blockdev_mirror_common(const char *job_id, BlockDriverState *bs, |
4193cdd7 FZ |
3333 | BlockDriverState *target, |
3334 | bool has_replaces, const char *replaces, | |
3335 | enum MirrorSyncMode sync, | |
274fccee | 3336 | BlockMirrorBackingMode backing_mode, |
4193cdd7 FZ |
3337 | bool has_speed, int64_t speed, |
3338 | bool has_granularity, uint32_t granularity, | |
3339 | bool has_buf_size, int64_t buf_size, | |
3340 | bool has_on_source_error, | |
3341 | BlockdevOnError on_source_error, | |
3342 | bool has_on_target_error, | |
3343 | BlockdevOnError on_target_error, | |
3344 | bool has_unmap, bool unmap, | |
3345 | Error **errp) | |
d9b902db | 3346 | { |
d9b902db PB |
3347 | |
3348 | if (!has_speed) { | |
3349 | speed = 0; | |
3350 | } | |
b952b558 PB |
3351 | if (!has_on_source_error) { |
3352 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
3353 | } | |
3354 | if (!has_on_target_error) { | |
3355 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
3356 | } | |
eee13dfe PB |
3357 | if (!has_granularity) { |
3358 | granularity = 0; | |
3359 | } | |
08e4ed6c | 3360 | if (!has_buf_size) { |
48ac0a4d | 3361 | buf_size = 0; |
08e4ed6c | 3362 | } |
0fc9f8ea FZ |
3363 | if (!has_unmap) { |
3364 | unmap = true; | |
3365 | } | |
08e4ed6c | 3366 | |
eee13dfe | 3367 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
c6bd8c70 MA |
3368 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3369 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
3370 | return; |
3371 | } | |
3372 | if (granularity & (granularity - 1)) { | |
c6bd8c70 MA |
3373 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
3374 | "power of 2"); | |
eee13dfe PB |
3375 | return; |
3376 | } | |
d9b902db | 3377 | |
4193cdd7 FZ |
3378 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR_SOURCE, errp)) { |
3379 | return; | |
3380 | } | |
e40e5027 FZ |
3381 | if (bdrv_op_is_blocked(target, BLOCK_OP_TYPE_MIRROR_TARGET, errp)) { |
3382 | return; | |
3383 | } | |
4193cdd7 FZ |
3384 | |
3385 | if (!bs->backing && sync == MIRROR_SYNC_MODE_TOP) { | |
3386 | sync = MIRROR_SYNC_MODE_FULL; | |
3387 | } | |
3388 | ||
3389 | /* pass the node name to replace to mirror start since it's loose coupling | |
3390 | * and will allow to check whether the node still exist at mirror completion | |
3391 | */ | |
71aa9867 | 3392 | mirror_start(job_id, bs, target, |
4193cdd7 | 3393 | has_replaces ? replaces : NULL, |
274fccee | 3394 | speed, granularity, buf_size, sync, backing_mode, |
8254b6d9 | 3395 | on_source_error, on_target_error, unmap, errp); |
4193cdd7 FZ |
3396 | } |
3397 | ||
faecd40a | 3398 | void qmp_drive_mirror(DriveMirror *arg, Error **errp) |
4193cdd7 FZ |
3399 | { |
3400 | BlockDriverState *bs; | |
4193cdd7 FZ |
3401 | BlockDriverState *source, *target_bs; |
3402 | AioContext *aio_context; | |
274fccee | 3403 | BlockMirrorBackingMode backing_mode; |
4193cdd7 FZ |
3404 | Error *local_err = NULL; |
3405 | QDict *options = NULL; | |
3406 | int flags; | |
3407 | int64_t size; | |
faecd40a | 3408 | const char *format = arg->format; |
4193cdd7 | 3409 | |
0524e93a KW |
3410 | bs = qmp_get_root_bs(arg->device, errp); |
3411 | if (!bs) { | |
d9b902db PB |
3412 | return; |
3413 | } | |
3414 | ||
0524e93a | 3415 | aio_context = bdrv_get_aio_context(bs); |
5a7e7a0b SH |
3416 | aio_context_acquire(aio_context); |
3417 | ||
faecd40a EB |
3418 | if (!arg->has_mode) { |
3419 | arg->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
4193cdd7 | 3420 | } |
d9b902db | 3421 | |
faecd40a EB |
3422 | if (!arg->has_format) { |
3423 | format = (arg->mode == NEW_IMAGE_MODE_EXISTING | |
3424 | ? NULL : bs->drv->format_name); | |
d9b902db | 3425 | } |
d9b902db | 3426 | |
61de4c68 | 3427 | flags = bs->open_flags | BDRV_O_RDWR; |
760e0063 | 3428 | source = backing_bs(bs); |
faecd40a EB |
3429 | if (!source && arg->sync == MIRROR_SYNC_MODE_TOP) { |
3430 | arg->sync = MIRROR_SYNC_MODE_FULL; | |
d9b902db | 3431 | } |
faecd40a | 3432 | if (arg->sync == MIRROR_SYNC_MODE_NONE) { |
117e0c82 HR |
3433 | source = bs; |
3434 | } | |
d9b902db | 3435 | |
ac3c5d83 SH |
3436 | size = bdrv_getlength(bs); |
3437 | if (size < 0) { | |
3438 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
5a7e7a0b | 3439 | goto out; |
ac3c5d83 SH |
3440 | } |
3441 | ||
faecd40a | 3442 | if (arg->has_replaces) { |
09158f00 | 3443 | BlockDriverState *to_replace_bs; |
5a7e7a0b SH |
3444 | AioContext *replace_aio_context; |
3445 | int64_t replace_size; | |
09158f00 | 3446 | |
faecd40a | 3447 | if (!arg->has_node_name) { |
09158f00 BC |
3448 | error_setg(errp, "a node-name must be provided when replacing a" |
3449 | " named node of the graph"); | |
5a7e7a0b | 3450 | goto out; |
09158f00 BC |
3451 | } |
3452 | ||
faecd40a | 3453 | to_replace_bs = check_to_replace_node(bs, arg->replaces, &local_err); |
09158f00 BC |
3454 | |
3455 | if (!to_replace_bs) { | |
3456 | error_propagate(errp, local_err); | |
5a7e7a0b | 3457 | goto out; |
09158f00 BC |
3458 | } |
3459 | ||
5a7e7a0b SH |
3460 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
3461 | aio_context_acquire(replace_aio_context); | |
3462 | replace_size = bdrv_getlength(to_replace_bs); | |
3463 | aio_context_release(replace_aio_context); | |
3464 | ||
3465 | if (size != replace_size) { | |
09158f00 BC |
3466 | error_setg(errp, "cannot replace image with a mirror image of " |
3467 | "different size"); | |
5a7e7a0b | 3468 | goto out; |
09158f00 BC |
3469 | } |
3470 | } | |
3471 | ||
faecd40a | 3472 | if (arg->mode == NEW_IMAGE_MODE_ABSOLUTE_PATHS) { |
274fccee HR |
3473 | backing_mode = MIRROR_SOURCE_BACKING_CHAIN; |
3474 | } else { | |
3475 | backing_mode = MIRROR_OPEN_BACKING_CHAIN; | |
3476 | } | |
3477 | ||
faecd40a EB |
3478 | if ((arg->sync == MIRROR_SYNC_MODE_FULL || !source) |
3479 | && arg->mode != NEW_IMAGE_MODE_EXISTING) | |
14526864 | 3480 | { |
d9b902db | 3481 | /* create new image w/o backing file */ |
e6641719 | 3482 | assert(format); |
faecd40a | 3483 | bdrv_img_create(arg->target, format, |
f382d43a | 3484 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db | 3485 | } else { |
faecd40a | 3486 | switch (arg->mode) { |
d9b902db | 3487 | case NEW_IMAGE_MODE_EXISTING: |
d9b902db PB |
3488 | break; |
3489 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
3490 | /* create new image with backing file */ | |
faecd40a | 3491 | bdrv_img_create(arg->target, format, |
cf8f2426 LC |
3492 | source->filename, |
3493 | source->drv->format_name, | |
f382d43a | 3494 | NULL, size, flags, &local_err, false); |
d9b902db PB |
3495 | break; |
3496 | default: | |
3497 | abort(); | |
3498 | } | |
3499 | } | |
3500 | ||
84d18f06 | 3501 | if (local_err) { |
cf8f2426 | 3502 | error_propagate(errp, local_err); |
5a7e7a0b | 3503 | goto out; |
d9b902db PB |
3504 | } |
3505 | ||
e6641719 | 3506 | options = qdict_new(); |
faecd40a EB |
3507 | if (arg->has_node_name) { |
3508 | qdict_put(options, "node-name", qstring_from_str(arg->node_name)); | |
4c828dc6 | 3509 | } |
e6641719 HR |
3510 | if (format) { |
3511 | qdict_put(options, "driver", qstring_from_str(format)); | |
3512 | } | |
4c828dc6 | 3513 | |
b812f671 PB |
3514 | /* Mirroring takes care of copy-on-write using the source's backing |
3515 | * file. | |
3516 | */ | |
faecd40a EB |
3517 | target_bs = bdrv_open(arg->target, NULL, options, |
3518 | flags | BDRV_O_NO_BACKING, errp); | |
5b363937 | 3519 | if (!target_bs) { |
5a7e7a0b | 3520 | goto out; |
d9b902db PB |
3521 | } |
3522 | ||
5a7e7a0b SH |
3523 | bdrv_set_aio_context(target_bs, aio_context); |
3524 | ||
faecd40a EB |
3525 | blockdev_mirror_common(arg->has_job_id ? arg->job_id : NULL, bs, target_bs, |
3526 | arg->has_replaces, arg->replaces, arg->sync, | |
3527 | backing_mode, arg->has_speed, arg->speed, | |
3528 | arg->has_granularity, arg->granularity, | |
3529 | arg->has_buf_size, arg->buf_size, | |
3530 | arg->has_on_source_error, arg->on_source_error, | |
3531 | arg->has_on_target_error, arg->on_target_error, | |
3532 | arg->has_unmap, arg->unmap, | |
4193cdd7 | 3533 | &local_err); |
e253f4b8 | 3534 | bdrv_unref(target_bs); |
621ff94d | 3535 | error_propagate(errp, local_err); |
5a7e7a0b SH |
3536 | out: |
3537 | aio_context_release(aio_context); | |
d9b902db PB |
3538 | } |
3539 | ||
71aa9867 AG |
3540 | void qmp_blockdev_mirror(bool has_job_id, const char *job_id, |
3541 | const char *device, const char *target, | |
df92562e FZ |
3542 | bool has_replaces, const char *replaces, |
3543 | MirrorSyncMode sync, | |
3544 | bool has_speed, int64_t speed, | |
3545 | bool has_granularity, uint32_t granularity, | |
3546 | bool has_buf_size, int64_t buf_size, | |
3547 | bool has_on_source_error, | |
3548 | BlockdevOnError on_source_error, | |
3549 | bool has_on_target_error, | |
3550 | BlockdevOnError on_target_error, | |
3551 | Error **errp) | |
3552 | { | |
3553 | BlockDriverState *bs; | |
df92562e FZ |
3554 | BlockDriverState *target_bs; |
3555 | AioContext *aio_context; | |
274fccee | 3556 | BlockMirrorBackingMode backing_mode = MIRROR_LEAVE_BACKING_CHAIN; |
df92562e FZ |
3557 | Error *local_err = NULL; |
3558 | ||
07eec652 | 3559 | bs = qmp_get_root_bs(device, errp); |
df92562e | 3560 | if (!bs) { |
df92562e FZ |
3561 | return; |
3562 | } | |
3563 | ||
3564 | target_bs = bdrv_lookup_bs(target, target, errp); | |
3565 | if (!target_bs) { | |
3566 | return; | |
3567 | } | |
3568 | ||
3569 | aio_context = bdrv_get_aio_context(bs); | |
3570 | aio_context_acquire(aio_context); | |
3571 | ||
df92562e FZ |
3572 | bdrv_set_aio_context(target_bs, aio_context); |
3573 | ||
71aa9867 | 3574 | blockdev_mirror_common(has_job_id ? job_id : NULL, bs, target_bs, |
274fccee | 3575 | has_replaces, replaces, sync, backing_mode, |
df92562e FZ |
3576 | has_speed, speed, |
3577 | has_granularity, granularity, | |
3578 | has_buf_size, buf_size, | |
3579 | has_on_source_error, on_source_error, | |
3580 | has_on_target_error, on_target_error, | |
3581 | true, true, | |
3582 | &local_err); | |
621ff94d | 3583 | error_propagate(errp, local_err); |
df92562e FZ |
3584 | |
3585 | aio_context_release(aio_context); | |
3586 | } | |
3587 | ||
3ddf3efe AG |
3588 | /* Get a block job using its ID and acquire its AioContext */ |
3589 | static BlockJob *find_block_job(const char *id, AioContext **aio_context, | |
24d6bffe | 3590 | Error **errp) |
2d47c6e9 | 3591 | { |
3ddf3efe | 3592 | BlockJob *job; |
2d47c6e9 | 3593 | |
3ddf3efe | 3594 | assert(id != NULL); |
5433c24f | 3595 | |
3ddf3efe | 3596 | *aio_context = NULL; |
3d948cdf | 3597 | |
3ddf3efe | 3598 | job = block_job_get(id); |
5433c24f | 3599 | |
3ddf3efe AG |
3600 | if (!job) { |
3601 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, | |
3602 | "Block job '%s' not found", id); | |
3603 | return NULL; | |
2d47c6e9 | 3604 | } |
3d948cdf | 3605 | |
3ddf3efe AG |
3606 | *aio_context = blk_get_aio_context(job->blk); |
3607 | aio_context_acquire(*aio_context); | |
3d948cdf | 3608 | |
3ddf3efe | 3609 | return job; |
2d47c6e9 SH |
3610 | } |
3611 | ||
882ec7ce | 3612 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 | 3613 | { |
3d948cdf | 3614 | AioContext *aio_context; |
24d6bffe | 3615 | BlockJob *job = find_block_job(device, &aio_context, errp); |
2d47c6e9 SH |
3616 | |
3617 | if (!job) { | |
2d47c6e9 SH |
3618 | return; |
3619 | } | |
3620 | ||
882ec7ce | 3621 | block_job_set_speed(job, speed, errp); |
3d948cdf | 3622 | aio_context_release(aio_context); |
2d47c6e9 | 3623 | } |
370521a1 | 3624 | |
6e37fb81 PB |
3625 | void qmp_block_job_cancel(const char *device, |
3626 | bool has_force, bool force, Error **errp) | |
370521a1 | 3627 | { |
3d948cdf | 3628 | AioContext *aio_context; |
24d6bffe | 3629 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3630 | |
370521a1 | 3631 | if (!job) { |
370521a1 SH |
3632 | return; |
3633 | } | |
3d948cdf SH |
3634 | |
3635 | if (!has_force) { | |
3636 | force = false; | |
3637 | } | |
3638 | ||
0df4ba58 | 3639 | if (block_job_user_paused(job) && !force) { |
f231b88d CR |
3640 | error_setg(errp, "The block job for device '%s' is currently paused", |
3641 | device); | |
3d948cdf | 3642 | goto out; |
8acc72a4 | 3643 | } |
370521a1 SH |
3644 | |
3645 | trace_qmp_block_job_cancel(job); | |
3646 | block_job_cancel(job); | |
3d948cdf SH |
3647 | out: |
3648 | aio_context_release(aio_context); | |
370521a1 | 3649 | } |
fb5458cd | 3650 | |
6e37fb81 PB |
3651 | void qmp_block_job_pause(const char *device, Error **errp) |
3652 | { | |
3d948cdf | 3653 | AioContext *aio_context; |
24d6bffe | 3654 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3655 | |
0df4ba58 | 3656 | if (!job || block_job_user_paused(job)) { |
6e37fb81 PB |
3657 | return; |
3658 | } | |
3659 | ||
3660 | trace_qmp_block_job_pause(job); | |
0df4ba58 | 3661 | block_job_user_pause(job); |
3d948cdf | 3662 | aio_context_release(aio_context); |
6e37fb81 PB |
3663 | } |
3664 | ||
3665 | void qmp_block_job_resume(const char *device, Error **errp) | |
3666 | { | |
3d948cdf | 3667 | AioContext *aio_context; |
24d6bffe | 3668 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 3669 | |
0df4ba58 | 3670 | if (!job || !block_job_user_paused(job)) { |
6e37fb81 PB |
3671 | return; |
3672 | } | |
3673 | ||
3674 | trace_qmp_block_job_resume(job); | |
17bd51f9 | 3675 | block_job_iostatus_reset(job); |
0df4ba58 | 3676 | block_job_user_resume(job); |
3d948cdf | 3677 | aio_context_release(aio_context); |
6e37fb81 PB |
3678 | } |
3679 | ||
aeae883b PB |
3680 | void qmp_block_job_complete(const char *device, Error **errp) |
3681 | { | |
3d948cdf | 3682 | AioContext *aio_context; |
24d6bffe | 3683 | BlockJob *job = find_block_job(device, &aio_context, errp); |
aeae883b PB |
3684 | |
3685 | if (!job) { | |
aeae883b PB |
3686 | return; |
3687 | } | |
3688 | ||
3689 | trace_qmp_block_job_complete(job); | |
3690 | block_job_complete(job, errp); | |
3d948cdf | 3691 | aio_context_release(aio_context); |
aeae883b PB |
3692 | } |
3693 | ||
fa40e656 JC |
3694 | void qmp_change_backing_file(const char *device, |
3695 | const char *image_node_name, | |
3696 | const char *backing_file, | |
3697 | Error **errp) | |
3698 | { | |
3699 | BlockDriverState *bs = NULL; | |
729962f6 | 3700 | AioContext *aio_context; |
fa40e656 JC |
3701 | BlockDriverState *image_bs = NULL; |
3702 | Error *local_err = NULL; | |
3703 | bool ro; | |
3704 | int open_flags; | |
3705 | int ret; | |
3706 | ||
7b5dca3f KW |
3707 | bs = qmp_get_root_bs(device, errp); |
3708 | if (!bs) { | |
fa40e656 JC |
3709 | return; |
3710 | } | |
3711 | ||
7b5dca3f | 3712 | aio_context = bdrv_get_aio_context(bs); |
729962f6 SH |
3713 | aio_context_acquire(aio_context); |
3714 | ||
fa40e656 JC |
3715 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
3716 | if (local_err) { | |
3717 | error_propagate(errp, local_err); | |
729962f6 | 3718 | goto out; |
fa40e656 JC |
3719 | } |
3720 | ||
3721 | if (!image_bs) { | |
3722 | error_setg(errp, "image file not found"); | |
729962f6 | 3723 | goto out; |
fa40e656 JC |
3724 | } |
3725 | ||
3726 | if (bdrv_find_base(image_bs) == image_bs) { | |
3727 | error_setg(errp, "not allowing backing file change on an image " | |
3728 | "without a backing file"); | |
729962f6 | 3729 | goto out; |
fa40e656 JC |
3730 | } |
3731 | ||
3732 | /* even though we are not necessarily operating on bs, we need it to | |
3733 | * determine if block ops are currently prohibited on the chain */ | |
3734 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
729962f6 | 3735 | goto out; |
fa40e656 JC |
3736 | } |
3737 | ||
3738 | /* final sanity check */ | |
3739 | if (!bdrv_chain_contains(bs, image_bs)) { | |
3740 | error_setg(errp, "'%s' and image file are not in the same chain", | |
3741 | device); | |
729962f6 | 3742 | goto out; |
fa40e656 JC |
3743 | } |
3744 | ||
3745 | /* if not r/w, reopen to make r/w */ | |
3746 | open_flags = image_bs->open_flags; | |
3747 | ro = bdrv_is_read_only(image_bs); | |
3748 | ||
3749 | if (ro) { | |
3750 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); | |
3751 | if (local_err) { | |
3752 | error_propagate(errp, local_err); | |
729962f6 | 3753 | goto out; |
fa40e656 JC |
3754 | } |
3755 | } | |
3756 | ||
3757 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
3758 | image_bs->drv ? image_bs->drv->format_name : ""); | |
3759 | ||
3760 | if (ret < 0) { | |
3761 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
3762 | backing_file); | |
3763 | /* don't exit here, so we can try to restore open flags if | |
3764 | * appropriate */ | |
3765 | } | |
3766 | ||
3767 | if (ro) { | |
3768 | bdrv_reopen(image_bs, open_flags, &local_err); | |
621ff94d | 3769 | error_propagate(errp, local_err); |
fa40e656 | 3770 | } |
729962f6 SH |
3771 | |
3772 | out: | |
3773 | aio_context_release(aio_context); | |
fa40e656 JC |
3774 | } |
3775 | ||
abb21ac3 KW |
3776 | void hmp_drive_add_node(Monitor *mon, const char *optstr) |
3777 | { | |
3778 | QemuOpts *opts; | |
3779 | QDict *qdict; | |
3780 | Error *local_err = NULL; | |
3781 | ||
3782 | opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); | |
3783 | if (!opts) { | |
3784 | return; | |
3785 | } | |
3786 | ||
3787 | qdict = qemu_opts_to_qdict(opts, NULL); | |
3788 | ||
3789 | if (!qdict_get_try_str(qdict, "node-name")) { | |
f8746fb8 | 3790 | QDECREF(qdict); |
abb21ac3 KW |
3791 | error_report("'node-name' needs to be specified"); |
3792 | goto out; | |
3793 | } | |
3794 | ||
3795 | BlockDriverState *bs = bds_tree_init(qdict, &local_err); | |
3796 | if (!bs) { | |
3797 | error_report_err(local_err); | |
3798 | goto out; | |
3799 | } | |
3800 | ||
3801 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); | |
3802 | ||
3803 | out: | |
3804 | qemu_opts_del(opts); | |
3805 | } | |
3806 | ||
d26c9a15 KW |
3807 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
3808 | { | |
be4b67bc | 3809 | BlockDriverState *bs; |
d26c9a15 | 3810 | QObject *obj; |
7d5e199a | 3811 | Visitor *v = qobject_output_visitor_new(&obj); |
d26c9a15 | 3812 | QDict *qdict; |
d26c9a15 KW |
3813 | Error *local_err = NULL; |
3814 | ||
3b098d56 | 3815 | visit_type_BlockdevOptions(v, NULL, &options, &local_err); |
84d18f06 | 3816 | if (local_err) { |
d26c9a15 KW |
3817 | error_propagate(errp, local_err); |
3818 | goto fail; | |
3819 | } | |
3820 | ||
3b098d56 | 3821 | visit_complete(v, &obj); |
d26c9a15 KW |
3822 | qdict = qobject_to_qdict(obj); |
3823 | ||
3824 | qdict_flatten(qdict); | |
3825 | ||
9ec8873e KW |
3826 | if (!qdict_get_try_str(qdict, "node-name")) { |
3827 | error_setg(errp, "'node-name' must be specified for the root node"); | |
3828 | goto fail; | |
3829 | } | |
9c4218e9 | 3830 | |
9ec8873e KW |
3831 | bs = bds_tree_init(qdict, errp); |
3832 | if (!bs) { | |
3833 | goto fail; | |
d26c9a15 KW |
3834 | } |
3835 | ||
9ec8873e KW |
3836 | QTAILQ_INSERT_TAIL(&monitor_bdrv_states, bs, monitor_list); |
3837 | ||
be4b67bc | 3838 | if (bs && bdrv_key_required(bs)) { |
9ec8873e KW |
3839 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
3840 | bdrv_unref(bs); | |
8ae8e904 KW |
3841 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
3842 | goto fail; | |
3843 | } | |
3844 | ||
d26c9a15 | 3845 | fail: |
3b098d56 | 3846 | visit_free(v); |
d26c9a15 KW |
3847 | } |
3848 | ||
9ec8873e | 3849 | void qmp_x_blockdev_del(const char *node_name, Error **errp) |
81b936ae AG |
3850 | { |
3851 | AioContext *aio_context; | |
81b936ae AG |
3852 | BlockDriverState *bs; |
3853 | ||
9ec8873e KW |
3854 | bs = bdrv_find_node(node_name); |
3855 | if (!bs) { | |
3856 | error_setg(errp, "Cannot find node %s", node_name); | |
81b936ae AG |
3857 | return; |
3858 | } | |
9ec8873e KW |
3859 | if (bdrv_has_blk(bs)) { |
3860 | error_setg(errp, "Node %s is in use", node_name); | |
3861 | return; | |
81b936ae | 3862 | } |
9ec8873e | 3863 | aio_context = bdrv_get_aio_context(bs); |
81b936ae AG |
3864 | aio_context_acquire(aio_context); |
3865 | ||
9ec8873e KW |
3866 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, errp)) { |
3867 | goto out; | |
3868 | } | |
9c4218e9 | 3869 | |
9ec8873e KW |
3870 | if (!bs->monitor_list.tqe_prev) { |
3871 | error_setg(errp, "Node %s is not owned by the monitor", | |
3872 | bs->node_name); | |
3873 | goto out; | |
81b936ae AG |
3874 | } |
3875 | ||
9ec8873e KW |
3876 | if (bs->refcnt > 1) { |
3877 | error_setg(errp, "Block device %s is in use", | |
3878 | bdrv_get_device_or_node_name(bs)); | |
3879 | goto out; | |
81b936ae AG |
3880 | } |
3881 | ||
9ec8873e KW |
3882 | QTAILQ_REMOVE(&monitor_bdrv_states, bs, monitor_list); |
3883 | bdrv_unref(bs); | |
3884 | ||
81b936ae AG |
3885 | out: |
3886 | aio_context_release(aio_context); | |
3887 | } | |
3888 | ||
7f821597 WC |
3889 | static BdrvChild *bdrv_find_child(BlockDriverState *parent_bs, |
3890 | const char *child_name) | |
3891 | { | |
3892 | BdrvChild *child; | |
3893 | ||
3894 | QLIST_FOREACH(child, &parent_bs->children, next) { | |
3895 | if (strcmp(child->name, child_name) == 0) { | |
3896 | return child; | |
3897 | } | |
3898 | } | |
3899 | ||
3900 | return NULL; | |
3901 | } | |
3902 | ||
3903 | void qmp_x_blockdev_change(const char *parent, bool has_child, | |
3904 | const char *child, bool has_node, | |
3905 | const char *node, Error **errp) | |
3906 | { | |
3907 | BlockDriverState *parent_bs, *new_bs = NULL; | |
3908 | BdrvChild *p_child; | |
3909 | ||
3910 | parent_bs = bdrv_lookup_bs(parent, parent, errp); | |
3911 | if (!parent_bs) { | |
3912 | return; | |
3913 | } | |
3914 | ||
3915 | if (has_child == has_node) { | |
3916 | if (has_child) { | |
3917 | error_setg(errp, "The parameters child and node are in conflict"); | |
3918 | } else { | |
3919 | error_setg(errp, "Either child or node must be specified"); | |
3920 | } | |
3921 | return; | |
3922 | } | |
3923 | ||
3924 | if (has_child) { | |
3925 | p_child = bdrv_find_child(parent_bs, child); | |
3926 | if (!p_child) { | |
3927 | error_setg(errp, "Node '%s' does not have child '%s'", | |
3928 | parent, child); | |
3929 | return; | |
3930 | } | |
3931 | bdrv_del_child(parent_bs, p_child, errp); | |
3932 | } | |
3933 | ||
3934 | if (has_node) { | |
3935 | new_bs = bdrv_find_node(node); | |
3936 | if (!new_bs) { | |
3937 | error_setg(errp, "Node '%s' not found", node); | |
3938 | return; | |
3939 | } | |
3940 | bdrv_add_child(parent_bs, new_bs, errp); | |
3941 | } | |
3942 | } | |
3943 | ||
fea68bb6 | 3944 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
fb5458cd | 3945 | { |
fea68bb6 | 3946 | BlockJobInfoList *head = NULL, **p_next = &head; |
f0f55ded | 3947 | BlockJob *job; |
fb5458cd | 3948 | |
f0f55ded | 3949 | for (job = block_job_next(NULL); job; job = block_job_next(job)) { |
559b935f JS |
3950 | BlockJobInfoList *elem; |
3951 | AioContext *aio_context; | |
69691e72 | 3952 | |
559b935f JS |
3953 | if (block_job_is_internal(job)) { |
3954 | continue; | |
3955 | } | |
3956 | elem = g_new0(BlockJobInfoList, 1); | |
3957 | aio_context = blk_get_aio_context(job->blk); | |
69691e72 | 3958 | aio_context_acquire(aio_context); |
559b935f | 3959 | elem->value = block_job_query(job, errp); |
69691e72 | 3960 | aio_context_release(aio_context); |
559b935f JS |
3961 | if (!elem->value) { |
3962 | g_free(elem); | |
3963 | qapi_free_BlockJobInfoList(head); | |
3964 | return NULL; | |
3965 | } | |
f0f55ded AG |
3966 | *p_next = elem; |
3967 | p_next = &elem->next; | |
fb5458cd | 3968 | } |
fb5458cd | 3969 | |
fea68bb6 | 3970 | return head; |
fb5458cd | 3971 | } |
4d454574 | 3972 | |
0006383e | 3973 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 3974 | .name = "drive", |
0006383e | 3975 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
3976 | .desc = { |
3977 | { | |
4d454574 PB |
3978 | .name = "snapshot", |
3979 | .type = QEMU_OPT_BOOL, | |
3980 | .help = "enable/disable snapshot mode", | |
4d454574 PB |
3981 | },{ |
3982 | .name = "aio", | |
3983 | .type = QEMU_OPT_STRING, | |
3984 | .help = "host AIO implementation (threads, native)", | |
e4b24b49 KW |
3985 | },{ |
3986 | .name = BDRV_OPT_CACHE_WB, | |
3987 | .type = QEMU_OPT_BOOL, | |
3988 | .help = "Enable writeback mode", | |
4d454574 PB |
3989 | },{ |
3990 | .name = "format", | |
3991 | .type = QEMU_OPT_STRING, | |
3992 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
3993 | },{ |
3994 | .name = "rerror", | |
3995 | .type = QEMU_OPT_STRING, | |
3996 | .help = "read error action", | |
3997 | },{ | |
3998 | .name = "werror", | |
3999 | .type = QEMU_OPT_STRING, | |
4000 | .help = "write error action", | |
4d454574 | 4001 | },{ |
4e200cf8 | 4002 | .name = BDRV_OPT_READ_ONLY, |
4d454574 PB |
4003 | .type = QEMU_OPT_BOOL, |
4004 | .help = "open drive file as read-only", | |
4005 | },{ | |
57975222 | 4006 | .name = "throttling.iops-total", |
4d454574 PB |
4007 | .type = QEMU_OPT_NUMBER, |
4008 | .help = "limit total I/O operations per second", | |
4009 | },{ | |
57975222 | 4010 | .name = "throttling.iops-read", |
4d454574 PB |
4011 | .type = QEMU_OPT_NUMBER, |
4012 | .help = "limit read operations per second", | |
4013 | },{ | |
57975222 | 4014 | .name = "throttling.iops-write", |
4d454574 PB |
4015 | .type = QEMU_OPT_NUMBER, |
4016 | .help = "limit write operations per second", | |
4017 | },{ | |
57975222 | 4018 | .name = "throttling.bps-total", |
4d454574 PB |
4019 | .type = QEMU_OPT_NUMBER, |
4020 | .help = "limit total bytes per second", | |
4021 | },{ | |
57975222 | 4022 | .name = "throttling.bps-read", |
4d454574 PB |
4023 | .type = QEMU_OPT_NUMBER, |
4024 | .help = "limit read bytes per second", | |
4025 | },{ | |
57975222 | 4026 | .name = "throttling.bps-write", |
4d454574 PB |
4027 | .type = QEMU_OPT_NUMBER, |
4028 | .help = "limit write bytes per second", | |
3e9fab69 BC |
4029 | },{ |
4030 | .name = "throttling.iops-total-max", | |
4031 | .type = QEMU_OPT_NUMBER, | |
4032 | .help = "I/O operations burst", | |
4033 | },{ | |
4034 | .name = "throttling.iops-read-max", | |
4035 | .type = QEMU_OPT_NUMBER, | |
4036 | .help = "I/O operations read burst", | |
4037 | },{ | |
4038 | .name = "throttling.iops-write-max", | |
4039 | .type = QEMU_OPT_NUMBER, | |
4040 | .help = "I/O operations write burst", | |
4041 | },{ | |
4042 | .name = "throttling.bps-total-max", | |
4043 | .type = QEMU_OPT_NUMBER, | |
4044 | .help = "total bytes burst", | |
4045 | },{ | |
4046 | .name = "throttling.bps-read-max", | |
4047 | .type = QEMU_OPT_NUMBER, | |
4048 | .help = "total bytes read burst", | |
4049 | },{ | |
4050 | .name = "throttling.bps-write-max", | |
4051 | .type = QEMU_OPT_NUMBER, | |
4052 | .help = "total bytes write burst", | |
8a0fc18d AG |
4053 | },{ |
4054 | .name = "throttling.iops-total-max-length", | |
4055 | .type = QEMU_OPT_NUMBER, | |
4056 | .help = "length of the iops-total-max burst period, in seconds", | |
4057 | },{ | |
4058 | .name = "throttling.iops-read-max-length", | |
4059 | .type = QEMU_OPT_NUMBER, | |
4060 | .help = "length of the iops-read-max burst period, in seconds", | |
4061 | },{ | |
4062 | .name = "throttling.iops-write-max-length", | |
4063 | .type = QEMU_OPT_NUMBER, | |
4064 | .help = "length of the iops-write-max burst period, in seconds", | |
4065 | },{ | |
4066 | .name = "throttling.bps-total-max-length", | |
4067 | .type = QEMU_OPT_NUMBER, | |
4068 | .help = "length of the bps-total-max burst period, in seconds", | |
4069 | },{ | |
4070 | .name = "throttling.bps-read-max-length", | |
4071 | .type = QEMU_OPT_NUMBER, | |
4072 | .help = "length of the bps-read-max burst period, in seconds", | |
4073 | },{ | |
4074 | .name = "throttling.bps-write-max-length", | |
4075 | .type = QEMU_OPT_NUMBER, | |
4076 | .help = "length of the bps-write-max burst period, in seconds", | |
2024c1df BC |
4077 | },{ |
4078 | .name = "throttling.iops-size", | |
4079 | .type = QEMU_OPT_NUMBER, | |
4080 | .help = "when limiting by iops max size of an I/O in bytes", | |
76f4afb4 AG |
4081 | },{ |
4082 | .name = "throttling.group", | |
4083 | .type = QEMU_OPT_STRING, | |
4084 | .help = "name of the block throttling group", | |
4d454574 PB |
4085 | },{ |
4086 | .name = "copy-on-read", | |
4087 | .type = QEMU_OPT_BOOL, | |
4088 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
4089 | },{ |
4090 | .name = "detect-zeroes", | |
4091 | .type = QEMU_OPT_STRING, | |
4092 | .help = "try to optimize zero writes (off, on, unmap)", | |
362e9299 AG |
4093 | },{ |
4094 | .name = "stats-account-invalid", | |
4095 | .type = QEMU_OPT_BOOL, | |
4096 | .help = "whether to account for invalid I/O operations " | |
4097 | "in the statistics", | |
4098 | },{ | |
4099 | .name = "stats-account-failed", | |
4100 | .type = QEMU_OPT_BOOL, | |
4101 | .help = "whether to account for failed I/O operations " | |
4102 | "in the statistics", | |
4d454574 PB |
4103 | }, |
4104 | { /* end of list */ } | |
4105 | }, | |
4106 | }; | |
0006383e KW |
4107 | |
4108 | QemuOptsList qemu_drive_opts = { | |
4109 | .name = "drive", | |
4110 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
4111 | .desc = { | |
492fdc6f KW |
4112 | /* |
4113 | * no elements => accept any params | |
4114 | * validation will happen later | |
4115 | */ | |
0006383e KW |
4116 | { /* end of list */ } |
4117 | }, | |
4118 | }; |