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666daa68 MA |
1 | /* |
2 | * QEMU host block devices | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * This work is licensed under the terms of the GNU GPL, version 2 or | |
7 | * later. See the COPYING file in the top-level directory. | |
3618a094 MA |
8 | * |
9 | * This file incorporates work covered by the following copyright and | |
10 | * permission notice: | |
11 | * | |
12 | * Copyright (c) 2003-2008 Fabrice Bellard | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
15 | * of this software and associated documentation files (the "Software"), to deal | |
16 | * in the Software without restriction, including without limitation the rights | |
17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
18 | * copies of the Software, and to permit persons to whom the Software is | |
19 | * furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice shall be included in | |
22 | * all copies or substantial portions of the Software. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
30 | * THE SOFTWARE. | |
666daa68 MA |
31 | */ |
32 | ||
26f54e9a | 33 | #include "sysemu/block-backend.h" |
9c17d615 | 34 | #include "sysemu/blockdev.h" |
0d09e41a | 35 | #include "hw/block/block.h" |
737e150e | 36 | #include "block/blockjob.h" |
83c9089e | 37 | #include "monitor/monitor.h" |
1de7afc9 PB |
38 | #include "qemu/option.h" |
39 | #include "qemu/config-file.h" | |
7b1b5d19 | 40 | #include "qapi/qmp/types.h" |
d26c9a15 KW |
41 | #include "qapi-visit.h" |
42 | #include "qapi/qmp-output-visitor.h" | |
9e7dac7c | 43 | #include "qapi/util.h" |
9c17d615 | 44 | #include "sysemu/sysemu.h" |
737e150e | 45 | #include "block/block_int.h" |
a4dea8a9 | 46 | #include "qmp-commands.h" |
12bd451f | 47 | #include "trace.h" |
9c17d615 | 48 | #include "sysemu/arch_init.h" |
666daa68 | 49 | |
1960966d MA |
50 | static const char *const if_name[IF_COUNT] = { |
51 | [IF_NONE] = "none", | |
52 | [IF_IDE] = "ide", | |
53 | [IF_SCSI] = "scsi", | |
54 | [IF_FLOPPY] = "floppy", | |
55 | [IF_PFLASH] = "pflash", | |
56 | [IF_MTD] = "mtd", | |
57 | [IF_SD] = "sd", | |
58 | [IF_VIRTIO] = "virtio", | |
59 | [IF_XEN] = "xen", | |
60 | }; | |
61 | ||
21dff8cf | 62 | static int if_max_devs[IF_COUNT] = { |
27d6bf40 MA |
63 | /* |
64 | * Do not change these numbers! They govern how drive option | |
65 | * index maps to unit and bus. That mapping is ABI. | |
66 | * | |
67 | * All controllers used to imlement if=T drives need to support | |
68 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
69 | * Otherwise, some index values map to "impossible" bus, unit | |
70 | * values. | |
71 | * | |
72 | * For instance, if you change [IF_SCSI] to 255, -drive | |
73 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
74 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
75 | * the drive can't be set up. Regression. | |
76 | */ | |
77 | [IF_IDE] = 2, | |
78 | [IF_SCSI] = 7, | |
1960966d MA |
79 | }; |
80 | ||
21dff8cf JS |
81 | /** |
82 | * Boards may call this to offer board-by-board overrides | |
83 | * of the default, global values. | |
84 | */ | |
85 | void override_max_devs(BlockInterfaceType type, int max_devs) | |
86 | { | |
18e46a03 | 87 | BlockBackend *blk; |
21dff8cf JS |
88 | DriveInfo *dinfo; |
89 | ||
90 | if (max_devs <= 0) { | |
91 | return; | |
92 | } | |
93 | ||
18e46a03 MA |
94 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
95 | dinfo = blk_legacy_dinfo(blk); | |
21dff8cf JS |
96 | if (dinfo->type == type) { |
97 | fprintf(stderr, "Cannot override units-per-bus property of" | |
98 | " the %s interface, because a drive of that type has" | |
99 | " already been added.\n", if_name[type]); | |
100 | g_assert_not_reached(); | |
101 | } | |
102 | } | |
103 | ||
104 | if_max_devs[type] = max_devs; | |
105 | } | |
106 | ||
14bafc54 MA |
107 | /* |
108 | * We automatically delete the drive when a device using it gets | |
109 | * unplugged. Questionable feature, but we can't just drop it. | |
110 | * Device models call blockdev_mark_auto_del() to schedule the | |
111 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
112 | * when deletion is actually safe. | |
113 | */ | |
4be74634 | 114 | void blockdev_mark_auto_del(BlockBackend *blk) |
14bafc54 | 115 | { |
18e46a03 | 116 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
4be74634 | 117 | BlockDriverState *bs = blk_bs(blk); |
91fddb0d | 118 | AioContext *aio_context; |
14bafc54 | 119 | |
26f8b3a8 | 120 | if (!dinfo) { |
2d246f01 KW |
121 | return; |
122 | } | |
123 | ||
91fddb0d SH |
124 | aio_context = bdrv_get_aio_context(bs); |
125 | aio_context_acquire(aio_context); | |
126 | ||
12bde0ee PB |
127 | if (bs->job) { |
128 | block_job_cancel(bs->job); | |
129 | } | |
91fddb0d SH |
130 | |
131 | aio_context_release(aio_context); | |
132 | ||
26f8b3a8 | 133 | dinfo->auto_del = 1; |
14bafc54 MA |
134 | } |
135 | ||
4be74634 | 136 | void blockdev_auto_del(BlockBackend *blk) |
14bafc54 | 137 | { |
18e46a03 | 138 | DriveInfo *dinfo = blk_legacy_dinfo(blk); |
14bafc54 | 139 | |
0fc0f1fa | 140 | if (dinfo && dinfo->auto_del) { |
b9fe8a7a | 141 | blk_unref(blk); |
14bafc54 MA |
142 | } |
143 | } | |
144 | ||
d8f94e1b JS |
145 | /** |
146 | * Returns the current mapping of how many units per bus | |
147 | * a particular interface can support. | |
148 | * | |
149 | * A positive integer indicates n units per bus. | |
150 | * 0 implies the mapping has not been established. | |
151 | * -1 indicates an invalid BlockInterfaceType was given. | |
152 | */ | |
153 | int drive_get_max_devs(BlockInterfaceType type) | |
154 | { | |
155 | if (type >= IF_IDE && type < IF_COUNT) { | |
156 | return if_max_devs[type]; | |
157 | } | |
158 | ||
159 | return -1; | |
160 | } | |
161 | ||
505a7fb1 MA |
162 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
163 | { | |
164 | int max_devs = if_max_devs[type]; | |
165 | return max_devs ? index / max_devs : 0; | |
166 | } | |
167 | ||
168 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
169 | { | |
170 | int max_devs = if_max_devs[type]; | |
171 | return max_devs ? index % max_devs : index; | |
172 | } | |
173 | ||
2292ddae MA |
174 | QemuOpts *drive_def(const char *optstr) |
175 | { | |
176 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
177 | } | |
178 | ||
179 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 180 | const char *optstr) |
666daa68 | 181 | { |
666daa68 | 182 | QemuOpts *opts; |
2292ddae | 183 | char buf[32]; |
666daa68 | 184 | |
2292ddae | 185 | opts = drive_def(optstr); |
666daa68 MA |
186 | if (!opts) { |
187 | return NULL; | |
188 | } | |
2292ddae MA |
189 | if (type != IF_DEFAULT) { |
190 | qemu_opt_set(opts, "if", if_name[type]); | |
191 | } | |
192 | if (index >= 0) { | |
193 | snprintf(buf, sizeof(buf), "%d", index); | |
194 | qemu_opt_set(opts, "index", buf); | |
195 | } | |
666daa68 MA |
196 | if (file) |
197 | qemu_opt_set(opts, "file", file); | |
198 | return opts; | |
199 | } | |
200 | ||
201 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
202 | { | |
18e46a03 | 203 | BlockBackend *blk; |
666daa68 MA |
204 | DriveInfo *dinfo; |
205 | ||
18e46a03 MA |
206 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
207 | dinfo = blk_legacy_dinfo(blk); | |
208 | if (dinfo && dinfo->type == type | |
209 | && dinfo->bus == bus && dinfo->unit == unit) { | |
666daa68 | 210 | return dinfo; |
18e46a03 | 211 | } |
666daa68 MA |
212 | } |
213 | ||
214 | return NULL; | |
215 | } | |
216 | ||
a66c9dc7 JS |
217 | bool drive_check_orphaned(void) |
218 | { | |
18e46a03 | 219 | BlockBackend *blk; |
a66c9dc7 JS |
220 | DriveInfo *dinfo; |
221 | bool rs = false; | |
222 | ||
18e46a03 MA |
223 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
224 | dinfo = blk_legacy_dinfo(blk); | |
a66c9dc7 JS |
225 | /* If dinfo->bdrv->dev is NULL, it has no device attached. */ |
226 | /* Unless this is a default drive, this may be an oversight. */ | |
a7f53e26 | 227 | if (!blk_get_attached_dev(blk) && !dinfo->is_default && |
a66c9dc7 JS |
228 | dinfo->type != IF_NONE) { |
229 | fprintf(stderr, "Warning: Orphaned drive without device: " | |
230 | "id=%s,file=%s,if=%s,bus=%d,unit=%d\n", | |
d3aeb1b7 | 231 | blk_name(blk), blk_bs(blk)->filename, if_name[dinfo->type], |
a66c9dc7 JS |
232 | dinfo->bus, dinfo->unit); |
233 | rs = true; | |
234 | } | |
235 | } | |
236 | ||
237 | return rs; | |
238 | } | |
239 | ||
f1bd51ac MA |
240 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
241 | { | |
242 | return drive_get(type, | |
243 | drive_index_to_bus_id(type, index), | |
244 | drive_index_to_unit_id(type, index)); | |
245 | } | |
246 | ||
666daa68 MA |
247 | int drive_get_max_bus(BlockInterfaceType type) |
248 | { | |
249 | int max_bus; | |
18e46a03 | 250 | BlockBackend *blk; |
666daa68 MA |
251 | DriveInfo *dinfo; |
252 | ||
253 | max_bus = -1; | |
18e46a03 MA |
254 | for (blk = blk_next(NULL); blk; blk = blk_next(blk)) { |
255 | dinfo = blk_legacy_dinfo(blk); | |
256 | if (dinfo && dinfo->type == type && dinfo->bus > max_bus) { | |
666daa68 | 257 | max_bus = dinfo->bus; |
18e46a03 | 258 | } |
666daa68 MA |
259 | } |
260 | return max_bus; | |
261 | } | |
262 | ||
13839974 MA |
263 | /* Get a block device. This should only be used for single-drive devices |
264 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
265 | appropriate bus. */ | |
266 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
267 | { | |
268 | static int next_block_unit[IF_COUNT]; | |
269 | ||
270 | return drive_get(type, 0, next_block_unit[type]++); | |
271 | } | |
272 | ||
666daa68 MA |
273 | static void bdrv_format_print(void *opaque, const char *name) |
274 | { | |
807105a7 | 275 | error_printf(" %s", name); |
666daa68 MA |
276 | } |
277 | ||
aa398a5c SH |
278 | typedef struct { |
279 | QEMUBH *bh; | |
fa510ebf FZ |
280 | BlockDriverState *bs; |
281 | } BDRVPutRefBH; | |
aa398a5c | 282 | |
fa510ebf | 283 | static void bdrv_put_ref_bh(void *opaque) |
aa398a5c | 284 | { |
fa510ebf | 285 | BDRVPutRefBH *s = opaque; |
aa398a5c | 286 | |
fa510ebf | 287 | bdrv_unref(s->bs); |
aa398a5c SH |
288 | qemu_bh_delete(s->bh); |
289 | g_free(s); | |
290 | } | |
291 | ||
292 | /* | |
fa510ebf | 293 | * Release a BDS reference in a BH |
aa398a5c | 294 | * |
fa510ebf FZ |
295 | * It is not safe to use bdrv_unref() from a callback function when the callers |
296 | * still need the BlockDriverState. In such cases we schedule a BH to release | |
297 | * the reference. | |
aa398a5c | 298 | */ |
fa510ebf | 299 | static void bdrv_put_ref_bh_schedule(BlockDriverState *bs) |
aa398a5c | 300 | { |
fa510ebf | 301 | BDRVPutRefBH *s; |
aa398a5c | 302 | |
fa510ebf FZ |
303 | s = g_new(BDRVPutRefBH, 1); |
304 | s->bh = qemu_bh_new(bdrv_put_ref_bh, s); | |
305 | s->bs = bs; | |
aa398a5c SH |
306 | qemu_bh_schedule(s->bh); |
307 | } | |
308 | ||
b681072d | 309 | static int parse_block_error_action(const char *buf, bool is_read, Error **errp) |
666daa68 MA |
310 | { |
311 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 312 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 313 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 314 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 315 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 316 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 317 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 318 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 319 | } else { |
b681072d KW |
320 | error_setg(errp, "'%s' invalid %s error action", |
321 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
322 | return -1; |
323 | } | |
324 | } | |
325 | ||
cc0681c4 | 326 | static bool check_throttle_config(ThrottleConfig *cfg, Error **errp) |
0563e191 | 327 | { |
cc0681c4 BC |
328 | if (throttle_conflicting(cfg)) { |
329 | error_setg(errp, "bps/iops/max total values and read/write values" | |
330 | " cannot be used at the same time"); | |
0563e191 ZYW |
331 | return false; |
332 | } | |
333 | ||
cc0681c4 BC |
334 | if (!throttle_is_valid(cfg)) { |
335 | error_setg(errp, "bps/iops/maxs values must be 0 or greater"); | |
7d81c141 SH |
336 | return false; |
337 | } | |
338 | ||
0563e191 ZYW |
339 | return true; |
340 | } | |
341 | ||
33cb7dc8 KW |
342 | typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType; |
343 | ||
f298d071 | 344 | /* Takes the ownership of bs_opts */ |
18e46a03 MA |
345 | static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, |
346 | Error **errp) | |
666daa68 MA |
347 | { |
348 | const char *buf; | |
666daa68 MA |
349 | int ro = 0; |
350 | int bdrv_flags = 0; | |
351 | int on_read_error, on_write_error; | |
26f54e9a | 352 | BlockBackend *blk; |
a0f1eab1 | 353 | BlockDriverState *bs; |
cc0681c4 | 354 | ThrottleConfig cfg; |
666daa68 | 355 | int snapshot = 0; |
fb0490f6 | 356 | bool copy_on_read; |
c546194f | 357 | Error *error = NULL; |
0006383e | 358 | QemuOpts *opts; |
0006383e | 359 | const char *id; |
74fe54f2 | 360 | bool has_driver_specific_opts; |
465bee1d | 361 | BlockdevDetectZeroesOptions detect_zeroes; |
666daa68 | 362 | |
f298d071 KW |
363 | /* Check common options by copying from bs_opts to opts, all other options |
364 | * stay in bs_opts for processing by bdrv_open(). */ | |
365 | id = qdict_get_try_str(bs_opts, "id"); | |
0006383e | 366 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); |
84d18f06 | 367 | if (error) { |
b681072d | 368 | error_propagate(errp, error); |
6376f952 | 369 | goto err_no_opts; |
0006383e KW |
370 | } |
371 | ||
0006383e | 372 | qemu_opts_absorb_qdict(opts, bs_opts, &error); |
84d18f06 | 373 | if (error) { |
b681072d | 374 | error_propagate(errp, error); |
ec9c10d2 | 375 | goto early_err; |
0006383e KW |
376 | } |
377 | ||
378 | if (id) { | |
379 | qdict_del(bs_opts, "id"); | |
380 | } | |
381 | ||
74fe54f2 KW |
382 | has_driver_specific_opts = !!qdict_size(bs_opts); |
383 | ||
666daa68 | 384 | /* extract parameters */ |
666daa68 | 385 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
0f227a94 | 386 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
fb0490f6 | 387 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 | 388 | |
a9384aff PB |
389 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
390 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
b681072d | 391 | error_setg(errp, "invalid discard option"); |
ec9c10d2 | 392 | goto early_err; |
a9384aff PB |
393 | } |
394 | } | |
395 | ||
29c4e2b5 KW |
396 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
397 | bdrv_flags |= BDRV_O_CACHE_WB; | |
398 | } | |
399 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { | |
400 | bdrv_flags |= BDRV_O_NOCACHE; | |
401 | } | |
1df6fa4b | 402 | if (qemu_opt_get_bool(opts, "cache.no-flush", false)) { |
29c4e2b5 | 403 | bdrv_flags |= BDRV_O_NO_FLUSH; |
666daa68 MA |
404 | } |
405 | ||
406 | #ifdef CONFIG_LINUX_AIO | |
407 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
408 | if (!strcmp(buf, "native")) { | |
409 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
410 | } else if (!strcmp(buf, "threads")) { | |
411 | /* this is the default */ | |
412 | } else { | |
b681072d | 413 | error_setg(errp, "invalid aio option"); |
ec9c10d2 | 414 | goto early_err; |
666daa68 MA |
415 | } |
416 | } | |
417 | #endif | |
418 | ||
419 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
420 | if (is_help_option(buf)) { |
421 | error_printf("Supported formats:"); | |
422 | bdrv_iterate_format(bdrv_format_print, NULL); | |
423 | error_printf("\n"); | |
ec9c10d2 | 424 | goto early_err; |
666daa68 | 425 | } |
74fe54f2 | 426 | |
e4342ce5 HR |
427 | if (qdict_haskey(bs_opts, "driver")) { |
428 | error_setg(errp, "Cannot specify both 'driver' and 'format'"); | |
ec9c10d2 | 429 | goto early_err; |
6db5f5d6 | 430 | } |
e4342ce5 | 431 | qdict_put(bs_opts, "driver", qstring_from_str(buf)); |
666daa68 MA |
432 | } |
433 | ||
0563e191 | 434 | /* disk I/O throttling */ |
cc0681c4 BC |
435 | memset(&cfg, 0, sizeof(cfg)); |
436 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = | |
57975222 | 437 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
cc0681c4 | 438 | cfg.buckets[THROTTLE_BPS_READ].avg = |
57975222 | 439 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
cc0681c4 | 440 | cfg.buckets[THROTTLE_BPS_WRITE].avg = |
57975222 | 441 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
cc0681c4 | 442 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = |
57975222 | 443 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
cc0681c4 | 444 | cfg.buckets[THROTTLE_OPS_READ].avg = |
57975222 | 445 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
cc0681c4 | 446 | cfg.buckets[THROTTLE_OPS_WRITE].avg = |
57975222 | 447 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 448 | |
3e9fab69 BC |
449 | cfg.buckets[THROTTLE_BPS_TOTAL].max = |
450 | qemu_opt_get_number(opts, "throttling.bps-total-max", 0); | |
451 | cfg.buckets[THROTTLE_BPS_READ].max = | |
452 | qemu_opt_get_number(opts, "throttling.bps-read-max", 0); | |
453 | cfg.buckets[THROTTLE_BPS_WRITE].max = | |
454 | qemu_opt_get_number(opts, "throttling.bps-write-max", 0); | |
455 | cfg.buckets[THROTTLE_OPS_TOTAL].max = | |
456 | qemu_opt_get_number(opts, "throttling.iops-total-max", 0); | |
457 | cfg.buckets[THROTTLE_OPS_READ].max = | |
458 | qemu_opt_get_number(opts, "throttling.iops-read-max", 0); | |
459 | cfg.buckets[THROTTLE_OPS_WRITE].max = | |
460 | qemu_opt_get_number(opts, "throttling.iops-write-max", 0); | |
cc0681c4 | 461 | |
2024c1df | 462 | cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0); |
cc0681c4 BC |
463 | |
464 | if (!check_throttle_config(&cfg, &error)) { | |
b681072d | 465 | error_propagate(errp, error); |
ec9c10d2 | 466 | goto early_err; |
0563e191 ZYW |
467 | } |
468 | ||
92aa5c6d | 469 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 470 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
b681072d | 471 | on_write_error = parse_block_error_action(buf, 0, &error); |
84d18f06 | 472 | if (error) { |
b681072d | 473 | error_propagate(errp, error); |
ec9c10d2 | 474 | goto early_err; |
666daa68 MA |
475 | } |
476 | } | |
477 | ||
92aa5c6d | 478 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 479 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
b681072d | 480 | on_read_error = parse_block_error_action(buf, 1, &error); |
84d18f06 | 481 | if (error) { |
b681072d | 482 | error_propagate(errp, error); |
ec9c10d2 | 483 | goto early_err; |
666daa68 MA |
484 | } |
485 | } | |
486 | ||
465bee1d | 487 | detect_zeroes = |
9e7dac7c PL |
488 | qapi_enum_parse(BlockdevDetectZeroesOptions_lookup, |
489 | qemu_opt_get(opts, "detect-zeroes"), | |
490 | BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX, | |
491 | BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF, | |
492 | &error); | |
465bee1d PL |
493 | if (error) { |
494 | error_propagate(errp, error); | |
495 | goto early_err; | |
496 | } | |
497 | ||
498 | if (detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP && | |
499 | !(bdrv_flags & BDRV_O_UNMAP)) { | |
500 | error_setg(errp, "setting detect-zeroes to unmap is not allowed " | |
501 | "without setting discard operation to unmap"); | |
502 | goto early_err; | |
503 | } | |
504 | ||
326642bc | 505 | /* init */ |
e4342ce5 HR |
506 | if ((!file || !*file) && !has_driver_specific_opts) { |
507 | blk = blk_new_with_bs(qemu_opts_id(opts), errp); | |
508 | if (!blk) { | |
509 | goto early_err; | |
510 | } | |
abd7f68d | 511 | |
e4342ce5 HR |
512 | bs = blk_bs(blk); |
513 | bs->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; | |
514 | bs->read_only = ro; | |
0563e191 | 515 | |
e4342ce5 HR |
516 | QDECREF(bs_opts); |
517 | } else { | |
518 | if (file && !*file) { | |
c2ad1b0c | 519 | file = NULL; |
c2ad1b0c | 520 | } |
666daa68 | 521 | |
e4342ce5 HR |
522 | if (snapshot) { |
523 | /* always use cache=unsafe with snapshot */ | |
524 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
525 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
526 | } | |
527 | ||
528 | if (copy_on_read) { | |
529 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
530 | } | |
fb0490f6 | 531 | |
e4342ce5 HR |
532 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
533 | bdrv_flags |= BDRV_O_INCOMING; | |
534 | } | |
535 | ||
536 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
537 | ||
538 | blk = blk_new_open(qemu_opts_id(opts), file, NULL, bs_opts, bdrv_flags, | |
539 | errp); | |
540 | if (!blk) { | |
541 | goto err_no_bs_opts; | |
542 | } | |
543 | bs = blk_bs(blk); | |
ed9d4205 BC |
544 | } |
545 | ||
e4342ce5 | 546 | bs->detect_zeroes = detect_zeroes; |
666daa68 | 547 | |
e4342ce5 | 548 | bdrv_set_on_error(bs, on_read_error, on_write_error); |
0006383e | 549 | |
e4342ce5 HR |
550 | /* disk I/O throttling */ |
551 | if (throttle_enabled(&cfg)) { | |
552 | bdrv_io_limits_enable(bs); | |
553 | bdrv_set_io_limits(bs, &cfg); | |
666daa68 MA |
554 | } |
555 | ||
a0f1eab1 | 556 | if (bdrv_key_required(bs)) { |
666daa68 | 557 | autostart = 0; |
a0f1eab1 | 558 | } |
0006383e | 559 | |
e4342ce5 | 560 | err_no_bs_opts: |
0006383e | 561 | qemu_opts_del(opts); |
18e46a03 | 562 | return blk; |
a9ae2bff | 563 | |
ec9c10d2 | 564 | early_err: |
ec9c10d2 | 565 | qemu_opts_del(opts); |
6376f952 MA |
566 | err_no_opts: |
567 | QDECREF(bs_opts); | |
a9ae2bff | 568 | return NULL; |
666daa68 MA |
569 | } |
570 | ||
5abbf0ee KW |
571 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to, |
572 | Error **errp) | |
57975222 KW |
573 | { |
574 | const char *value; | |
575 | ||
576 | value = qemu_opt_get(opts, from); | |
577 | if (value) { | |
5abbf0ee KW |
578 | if (qemu_opt_find(opts, to)) { |
579 | error_setg(errp, "'%s' and its alias '%s' can't be used at the " | |
580 | "same time", to, from); | |
581 | return; | |
582 | } | |
20d6cd47 JL |
583 | } |
584 | ||
585 | /* rename all items in opts */ | |
586 | while ((value = qemu_opt_get(opts, from))) { | |
57975222 KW |
587 | qemu_opt_set(opts, to, value); |
588 | qemu_opt_unset(opts, from); | |
589 | } | |
590 | } | |
591 | ||
33cb7dc8 KW |
592 | QemuOptsList qemu_legacy_drive_opts = { |
593 | .name = "drive", | |
594 | .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_drive_opts.head), | |
595 | .desc = { | |
596 | { | |
87a899c5 KW |
597 | .name = "bus", |
598 | .type = QEMU_OPT_NUMBER, | |
599 | .help = "bus number", | |
600 | },{ | |
601 | .name = "unit", | |
602 | .type = QEMU_OPT_NUMBER, | |
603 | .help = "unit number (i.e. lun for scsi)", | |
604 | },{ | |
605 | .name = "index", | |
606 | .type = QEMU_OPT_NUMBER, | |
607 | .help = "index number", | |
608 | },{ | |
33cb7dc8 KW |
609 | .name = "media", |
610 | .type = QEMU_OPT_STRING, | |
611 | .help = "media type (disk, cdrom)", | |
593d464b KW |
612 | },{ |
613 | .name = "if", | |
614 | .type = QEMU_OPT_STRING, | |
615 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
b41a7338 KW |
616 | },{ |
617 | .name = "cyls", | |
618 | .type = QEMU_OPT_NUMBER, | |
619 | .help = "number of cylinders (ide disk geometry)", | |
620 | },{ | |
621 | .name = "heads", | |
622 | .type = QEMU_OPT_NUMBER, | |
623 | .help = "number of heads (ide disk geometry)", | |
624 | },{ | |
625 | .name = "secs", | |
626 | .type = QEMU_OPT_NUMBER, | |
627 | .help = "number of sectors (ide disk geometry)", | |
628 | },{ | |
629 | .name = "trans", | |
630 | .type = QEMU_OPT_STRING, | |
631 | .help = "chs translation (auto, lba, none)", | |
26929298 KW |
632 | },{ |
633 | .name = "boot", | |
634 | .type = QEMU_OPT_BOOL, | |
635 | .help = "(deprecated, ignored)", | |
394c7d4d KW |
636 | },{ |
637 | .name = "addr", | |
638 | .type = QEMU_OPT_STRING, | |
639 | .help = "pci address (virtio only)", | |
bcf83158 KW |
640 | },{ |
641 | .name = "serial", | |
642 | .type = QEMU_OPT_STRING, | |
643 | .help = "disk serial number", | |
d095b465 HR |
644 | },{ |
645 | .name = "file", | |
646 | .type = QEMU_OPT_STRING, | |
647 | .help = "file name", | |
33cb7dc8 | 648 | }, |
0ebd24e0 KW |
649 | |
650 | /* Options that are passed on, but have special semantics with -drive */ | |
651 | { | |
652 | .name = "read-only", | |
653 | .type = QEMU_OPT_BOOL, | |
654 | .help = "open drive file as read-only", | |
ee13ed1c KW |
655 | },{ |
656 | .name = "rerror", | |
657 | .type = QEMU_OPT_STRING, | |
658 | .help = "read error action", | |
659 | },{ | |
660 | .name = "werror", | |
661 | .type = QEMU_OPT_STRING, | |
662 | .help = "write error action", | |
0ebd24e0 KW |
663 | },{ |
664 | .name = "copy-on-read", | |
665 | .type = QEMU_OPT_BOOL, | |
666 | .help = "copy read data from backing file into image file", | |
667 | }, | |
668 | ||
33cb7dc8 KW |
669 | { /* end of list */ } |
670 | }, | |
671 | }; | |
672 | ||
60e19e06 | 673 | DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type) |
57975222 | 674 | { |
29c4e2b5 | 675 | const char *value; |
18e46a03 | 676 | BlockBackend *blk; |
33cb7dc8 | 677 | DriveInfo *dinfo = NULL; |
f298d071 | 678 | QDict *bs_opts; |
33cb7dc8 KW |
679 | QemuOpts *legacy_opts; |
680 | DriveMediaType media = MEDIA_DISK; | |
593d464b | 681 | BlockInterfaceType type; |
b41a7338 | 682 | int cyls, heads, secs, translation; |
87a899c5 | 683 | int max_devs, bus_id, unit_id, index; |
394c7d4d | 684 | const char *devaddr; |
ee13ed1c | 685 | const char *werror, *rerror; |
a7fdbcf0 FZ |
686 | bool read_only = false; |
687 | bool copy_on_read; | |
bcf83158 | 688 | const char *serial; |
d095b465 | 689 | const char *filename; |
33cb7dc8 | 690 | Error *local_err = NULL; |
247147fb | 691 | int i; |
29c4e2b5 | 692 | |
57975222 | 693 | /* Change legacy command line options into QMP ones */ |
247147fb KW |
694 | static const struct { |
695 | const char *from; | |
696 | const char *to; | |
697 | } opt_renames[] = { | |
698 | { "iops", "throttling.iops-total" }, | |
699 | { "iops_rd", "throttling.iops-read" }, | |
700 | { "iops_wr", "throttling.iops-write" }, | |
57975222 | 701 | |
247147fb KW |
702 | { "bps", "throttling.bps-total" }, |
703 | { "bps_rd", "throttling.bps-read" }, | |
704 | { "bps_wr", "throttling.bps-write" }, | |
57975222 | 705 | |
247147fb KW |
706 | { "iops_max", "throttling.iops-total-max" }, |
707 | { "iops_rd_max", "throttling.iops-read-max" }, | |
708 | { "iops_wr_max", "throttling.iops-write-max" }, | |
3e9fab69 | 709 | |
247147fb KW |
710 | { "bps_max", "throttling.bps-total-max" }, |
711 | { "bps_rd_max", "throttling.bps-read-max" }, | |
712 | { "bps_wr_max", "throttling.bps-write-max" }, | |
3e9fab69 | 713 | |
247147fb | 714 | { "iops_size", "throttling.iops-size" }, |
2024c1df | 715 | |
247147fb KW |
716 | { "readonly", "read-only" }, |
717 | }; | |
718 | ||
719 | for (i = 0; i < ARRAY_SIZE(opt_renames); i++) { | |
5abbf0ee KW |
720 | qemu_opt_rename(all_opts, opt_renames[i].from, opt_renames[i].to, |
721 | &local_err); | |
722 | if (local_err) { | |
565f65d2 | 723 | error_report_err(local_err); |
5abbf0ee KW |
724 | return NULL; |
725 | } | |
247147fb | 726 | } |
0f227a94 | 727 | |
29c4e2b5 KW |
728 | value = qemu_opt_get(all_opts, "cache"); |
729 | if (value) { | |
730 | int flags = 0; | |
731 | ||
732 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
733 | error_report("invalid cache option"); | |
734 | return NULL; | |
735 | } | |
736 | ||
737 | /* Specific options take precedence */ | |
738 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
739 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
cccb7967 | 740 | !!(flags & BDRV_O_CACHE_WB), &error_abort); |
29c4e2b5 KW |
741 | } |
742 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
743 | qemu_opt_set_bool(all_opts, "cache.direct", | |
cccb7967 | 744 | !!(flags & BDRV_O_NOCACHE), &error_abort); |
29c4e2b5 KW |
745 | } |
746 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
747 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
cccb7967 | 748 | !!(flags & BDRV_O_NO_FLUSH), &error_abort); |
29c4e2b5 KW |
749 | } |
750 | qemu_opt_unset(all_opts, "cache"); | |
751 | } | |
752 | ||
f298d071 KW |
753 | /* Get a QDict for processing the options */ |
754 | bs_opts = qdict_new(); | |
755 | qemu_opts_to_qdict(all_opts, bs_opts); | |
756 | ||
87ea75d5 PC |
757 | legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0, |
758 | &error_abort); | |
33cb7dc8 | 759 | qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err); |
84d18f06 | 760 | if (local_err) { |
565f65d2 | 761 | error_report_err(local_err); |
33cb7dc8 KW |
762 | goto fail; |
763 | } | |
764 | ||
26929298 KW |
765 | /* Deprecated option boot=[on|off] */ |
766 | if (qemu_opt_get(legacy_opts, "boot") != NULL) { | |
767 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
768 | "ignored. Future versions will reject this parameter. Please " | |
769 | "update your scripts.\n"); | |
770 | } | |
771 | ||
33cb7dc8 KW |
772 | /* Media type */ |
773 | value = qemu_opt_get(legacy_opts, "media"); | |
774 | if (value) { | |
775 | if (!strcmp(value, "disk")) { | |
776 | media = MEDIA_DISK; | |
777 | } else if (!strcmp(value, "cdrom")) { | |
778 | media = MEDIA_CDROM; | |
a7fdbcf0 | 779 | read_only = true; |
33cb7dc8 KW |
780 | } else { |
781 | error_report("'%s' invalid media", value); | |
782 | goto fail; | |
783 | } | |
784 | } | |
785 | ||
0ebd24e0 | 786 | /* copy-on-read is disabled with a warning for read-only devices */ |
a7fdbcf0 | 787 | read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false); |
0ebd24e0 KW |
788 | copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false); |
789 | ||
790 | if (read_only && copy_on_read) { | |
791 | error_report("warning: disabling copy-on-read on read-only drive"); | |
792 | copy_on_read = false; | |
793 | } | |
794 | ||
795 | qdict_put(bs_opts, "read-only", | |
796 | qstring_from_str(read_only ? "on" : "off")); | |
797 | qdict_put(bs_opts, "copy-on-read", | |
798 | qstring_from_str(copy_on_read ? "on" :"off")); | |
799 | ||
593d464b KW |
800 | /* Controller type */ |
801 | value = qemu_opt_get(legacy_opts, "if"); | |
802 | if (value) { | |
803 | for (type = 0; | |
804 | type < IF_COUNT && strcmp(value, if_name[type]); | |
805 | type++) { | |
806 | } | |
807 | if (type == IF_COUNT) { | |
808 | error_report("unsupported bus type '%s'", value); | |
809 | goto fail; | |
810 | } | |
811 | } else { | |
812 | type = block_default_type; | |
813 | } | |
814 | ||
b41a7338 KW |
815 | /* Geometry */ |
816 | cyls = qemu_opt_get_number(legacy_opts, "cyls", 0); | |
817 | heads = qemu_opt_get_number(legacy_opts, "heads", 0); | |
818 | secs = qemu_opt_get_number(legacy_opts, "secs", 0); | |
819 | ||
820 | if (cyls || heads || secs) { | |
821 | if (cyls < 1) { | |
822 | error_report("invalid physical cyls number"); | |
823 | goto fail; | |
824 | } | |
825 | if (heads < 1) { | |
826 | error_report("invalid physical heads number"); | |
827 | goto fail; | |
828 | } | |
829 | if (secs < 1) { | |
830 | error_report("invalid physical secs number"); | |
831 | goto fail; | |
832 | } | |
833 | } | |
834 | ||
835 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
836 | value = qemu_opt_get(legacy_opts, "trans"); | |
837 | if (value != NULL) { | |
838 | if (!cyls) { | |
839 | error_report("'%s' trans must be used with cyls, heads and secs", | |
840 | value); | |
841 | goto fail; | |
842 | } | |
843 | if (!strcmp(value, "none")) { | |
844 | translation = BIOS_ATA_TRANSLATION_NONE; | |
845 | } else if (!strcmp(value, "lba")) { | |
846 | translation = BIOS_ATA_TRANSLATION_LBA; | |
f31c41ff PB |
847 | } else if (!strcmp(value, "large")) { |
848 | translation = BIOS_ATA_TRANSLATION_LARGE; | |
849 | } else if (!strcmp(value, "rechs")) { | |
850 | translation = BIOS_ATA_TRANSLATION_RECHS; | |
b41a7338 KW |
851 | } else if (!strcmp(value, "auto")) { |
852 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
853 | } else { | |
854 | error_report("'%s' invalid translation type", value); | |
855 | goto fail; | |
856 | } | |
857 | } | |
858 | ||
859 | if (media == MEDIA_CDROM) { | |
860 | if (cyls || secs || heads) { | |
861 | error_report("CHS can't be set with media=cdrom"); | |
862 | goto fail; | |
863 | } | |
864 | } | |
865 | ||
87a899c5 KW |
866 | /* Device address specified by bus/unit or index. |
867 | * If none was specified, try to find the first free one. */ | |
868 | bus_id = qemu_opt_get_number(legacy_opts, "bus", 0); | |
869 | unit_id = qemu_opt_get_number(legacy_opts, "unit", -1); | |
870 | index = qemu_opt_get_number(legacy_opts, "index", -1); | |
871 | ||
872 | max_devs = if_max_devs[type]; | |
873 | ||
874 | if (index != -1) { | |
875 | if (bus_id != 0 || unit_id != -1) { | |
876 | error_report("index cannot be used with bus and unit"); | |
877 | goto fail; | |
878 | } | |
879 | bus_id = drive_index_to_bus_id(type, index); | |
880 | unit_id = drive_index_to_unit_id(type, index); | |
881 | } | |
882 | ||
883 | if (unit_id == -1) { | |
884 | unit_id = 0; | |
885 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
886 | unit_id++; | |
887 | if (max_devs && unit_id >= max_devs) { | |
888 | unit_id -= max_devs; | |
889 | bus_id++; | |
890 | } | |
891 | } | |
892 | } | |
893 | ||
894 | if (max_devs && unit_id >= max_devs) { | |
895 | error_report("unit %d too big (max is %d)", unit_id, max_devs - 1); | |
896 | goto fail; | |
897 | } | |
898 | ||
899 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
900 | error_report("drive with bus=%d, unit=%d (index=%d) exists", | |
901 | bus_id, unit_id, index); | |
902 | goto fail; | |
903 | } | |
904 | ||
bcf83158 KW |
905 | /* Serial number */ |
906 | serial = qemu_opt_get(legacy_opts, "serial"); | |
907 | ||
87a899c5 KW |
908 | /* no id supplied -> create one */ |
909 | if (qemu_opts_id(all_opts) == NULL) { | |
910 | char *new_id; | |
911 | const char *mediastr = ""; | |
912 | if (type == IF_IDE || type == IF_SCSI) { | |
913 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
914 | } | |
915 | if (max_devs) { | |
916 | new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id, | |
917 | mediastr, unit_id); | |
918 | } else { | |
919 | new_id = g_strdup_printf("%s%s%i", if_name[type], | |
920 | mediastr, unit_id); | |
921 | } | |
922 | qdict_put(bs_opts, "id", qstring_from_str(new_id)); | |
923 | g_free(new_id); | |
924 | } | |
925 | ||
394c7d4d KW |
926 | /* Add virtio block device */ |
927 | devaddr = qemu_opt_get(legacy_opts, "addr"); | |
928 | if (devaddr && type != IF_VIRTIO) { | |
929 | error_report("addr is not supported by this bus type"); | |
930 | goto fail; | |
931 | } | |
932 | ||
933 | if (type == IF_VIRTIO) { | |
934 | QemuOpts *devopts; | |
87ea75d5 PC |
935 | devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, |
936 | &error_abort); | |
394c7d4d KW |
937 | if (arch_type == QEMU_ARCH_S390X) { |
938 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); | |
939 | } else { | |
940 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); | |
941 | } | |
942 | qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id")); | |
943 | if (devaddr) { | |
944 | qemu_opt_set(devopts, "addr", devaddr); | |
945 | } | |
946 | } | |
947 | ||
d095b465 HR |
948 | filename = qemu_opt_get(legacy_opts, "file"); |
949 | ||
ee13ed1c KW |
950 | /* Check werror/rerror compatibility with if=... */ |
951 | werror = qemu_opt_get(legacy_opts, "werror"); | |
952 | if (werror != NULL) { | |
953 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && | |
954 | type != IF_NONE) { | |
955 | error_report("werror is not supported by this bus type"); | |
956 | goto fail; | |
957 | } | |
958 | qdict_put(bs_opts, "werror", qstring_from_str(werror)); | |
959 | } | |
960 | ||
961 | rerror = qemu_opt_get(legacy_opts, "rerror"); | |
962 | if (rerror != NULL) { | |
963 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && | |
964 | type != IF_NONE) { | |
965 | error_report("rerror is not supported by this bus type"); | |
966 | goto fail; | |
967 | } | |
968 | qdict_put(bs_opts, "rerror", qstring_from_str(rerror)); | |
969 | } | |
970 | ||
2d246f01 | 971 | /* Actual block device init: Functionality shared with blockdev-add */ |
18e46a03 | 972 | blk = blockdev_init(filename, bs_opts, &local_err); |
3cb0e25c | 973 | bs_opts = NULL; |
18e46a03 | 974 | if (!blk) { |
84d18f06 | 975 | if (local_err) { |
565f65d2 | 976 | error_report_err(local_err); |
b681072d | 977 | } |
2d246f01 | 978 | goto fail; |
b681072d | 979 | } else { |
84d18f06 | 980 | assert(!local_err); |
2d246f01 KW |
981 | } |
982 | ||
26f8b3a8 MA |
983 | /* Create legacy DriveInfo */ |
984 | dinfo = g_malloc0(sizeof(*dinfo)); | |
f298d071 | 985 | dinfo->opts = all_opts; |
2d246f01 | 986 | |
b41a7338 KW |
987 | dinfo->cyls = cyls; |
988 | dinfo->heads = heads; | |
989 | dinfo->secs = secs; | |
990 | dinfo->trans = translation; | |
991 | ||
ee13ed1c | 992 | dinfo->type = type; |
87a899c5 KW |
993 | dinfo->bus = bus_id; |
994 | dinfo->unit = unit_id; | |
394c7d4d | 995 | dinfo->devaddr = devaddr; |
bcf83158 KW |
996 | dinfo->serial = g_strdup(serial); |
997 | ||
26f8b3a8 MA |
998 | blk_set_legacy_dinfo(blk, dinfo); |
999 | ||
e34ef046 KW |
1000 | switch(type) { |
1001 | case IF_IDE: | |
1002 | case IF_SCSI: | |
1003 | case IF_XEN: | |
1004 | case IF_NONE: | |
1005 | dinfo->media_cd = media == MEDIA_CDROM; | |
1006 | break; | |
1007 | default: | |
1008 | break; | |
1009 | } | |
1010 | ||
2d246f01 | 1011 | fail: |
33cb7dc8 | 1012 | qemu_opts_del(legacy_opts); |
3cb0e25c | 1013 | QDECREF(bs_opts); |
2d246f01 | 1014 | return dinfo; |
57975222 KW |
1015 | } |
1016 | ||
3e5a50d6 | 1017 | void hmp_commit(Monitor *mon, const QDict *qdict) |
666daa68 | 1018 | { |
666daa68 | 1019 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 1020 | BlockDriverState *bs; |
e8877497 | 1021 | int ret; |
666daa68 | 1022 | |
6ab4b5ab | 1023 | if (!strcmp(device, "all")) { |
e8877497 | 1024 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
1025 | } else { |
1026 | bs = bdrv_find(device); | |
ac59eb95 | 1027 | if (!bs) { |
58513bde | 1028 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 1029 | return; |
6ab4b5ab | 1030 | } |
2d3735d3 | 1031 | ret = bdrv_commit(bs); |
58513bde JC |
1032 | } |
1033 | if (ret < 0) { | |
1034 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
1035 | strerror(-ret)); | |
666daa68 MA |
1036 | } |
1037 | } | |
1038 | ||
6cc2a415 PB |
1039 | static void blockdev_do_action(int kind, void *data, Error **errp) |
1040 | { | |
c8a83e85 KW |
1041 | TransactionAction action; |
1042 | TransactionActionList list; | |
6cc2a415 PB |
1043 | |
1044 | action.kind = kind; | |
1045 | action.data = data; | |
1046 | list.value = &action; | |
1047 | list.next = NULL; | |
1048 | qmp_transaction(&list, errp); | |
1049 | } | |
1050 | ||
0901f67e BC |
1051 | void qmp_blockdev_snapshot_sync(bool has_device, const char *device, |
1052 | bool has_node_name, const char *node_name, | |
1053 | const char *snapshot_file, | |
1054 | bool has_snapshot_node_name, | |
1055 | const char *snapshot_node_name, | |
6106e249 | 1056 | bool has_format, const char *format, |
0901f67e | 1057 | bool has_mode, NewImageMode mode, Error **errp) |
f8882568 | 1058 | { |
6cc2a415 | 1059 | BlockdevSnapshot snapshot = { |
0901f67e | 1060 | .has_device = has_device, |
6cc2a415 | 1061 | .device = (char *) device, |
0901f67e BC |
1062 | .has_node_name = has_node_name, |
1063 | .node_name = (char *) node_name, | |
6cc2a415 | 1064 | .snapshot_file = (char *) snapshot_file, |
0901f67e BC |
1065 | .has_snapshot_node_name = has_snapshot_node_name, |
1066 | .snapshot_node_name = (char *) snapshot_node_name, | |
6cc2a415 PB |
1067 | .has_format = has_format, |
1068 | .format = (char *) format, | |
1069 | .has_mode = has_mode, | |
1070 | .mode = mode, | |
1071 | }; | |
c8a83e85 KW |
1072 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
1073 | &snapshot, errp); | |
f8882568 JS |
1074 | } |
1075 | ||
f323bc9e WX |
1076 | void qmp_blockdev_snapshot_internal_sync(const char *device, |
1077 | const char *name, | |
1078 | Error **errp) | |
1079 | { | |
1080 | BlockdevSnapshotInternal snapshot = { | |
1081 | .device = (char *) device, | |
1082 | .name = (char *) name | |
1083 | }; | |
1084 | ||
1085 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC, | |
1086 | &snapshot, errp); | |
1087 | } | |
1088 | ||
44e3e053 WX |
1089 | SnapshotInfo *qmp_blockdev_snapshot_delete_internal_sync(const char *device, |
1090 | bool has_id, | |
1091 | const char *id, | |
1092 | bool has_name, | |
1093 | const char *name, | |
1094 | Error **errp) | |
1095 | { | |
1096 | BlockDriverState *bs = bdrv_find(device); | |
4ef3982a | 1097 | AioContext *aio_context; |
44e3e053 WX |
1098 | QEMUSnapshotInfo sn; |
1099 | Error *local_err = NULL; | |
1100 | SnapshotInfo *info = NULL; | |
1101 | int ret; | |
1102 | ||
1103 | if (!bs) { | |
1104 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1105 | return NULL; | |
1106 | } | |
1107 | ||
1108 | if (!has_id) { | |
1109 | id = NULL; | |
1110 | } | |
1111 | ||
1112 | if (!has_name) { | |
1113 | name = NULL; | |
1114 | } | |
1115 | ||
1116 | if (!id && !name) { | |
1117 | error_setg(errp, "Name or id must be provided"); | |
1118 | return NULL; | |
1119 | } | |
1120 | ||
4ef3982a SH |
1121 | aio_context = bdrv_get_aio_context(bs); |
1122 | aio_context_acquire(aio_context); | |
1123 | ||
0b928854 SH |
1124 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE, errp)) { |
1125 | goto out_aio_context; | |
1126 | } | |
1127 | ||
44e3e053 | 1128 | ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err); |
84d18f06 | 1129 | if (local_err) { |
44e3e053 | 1130 | error_propagate(errp, local_err); |
4ef3982a | 1131 | goto out_aio_context; |
44e3e053 WX |
1132 | } |
1133 | if (!ret) { | |
1134 | error_setg(errp, | |
1135 | "Snapshot with id '%s' and name '%s' does not exist on " | |
1136 | "device '%s'", | |
1137 | STR_OR_NULL(id), STR_OR_NULL(name), device); | |
4ef3982a | 1138 | goto out_aio_context; |
44e3e053 WX |
1139 | } |
1140 | ||
1141 | bdrv_snapshot_delete(bs, id, name, &local_err); | |
84d18f06 | 1142 | if (local_err) { |
44e3e053 | 1143 | error_propagate(errp, local_err); |
4ef3982a | 1144 | goto out_aio_context; |
44e3e053 WX |
1145 | } |
1146 | ||
4ef3982a SH |
1147 | aio_context_release(aio_context); |
1148 | ||
5839e53b | 1149 | info = g_new0(SnapshotInfo, 1); |
44e3e053 WX |
1150 | info->id = g_strdup(sn.id_str); |
1151 | info->name = g_strdup(sn.name); | |
1152 | info->date_nsec = sn.date_nsec; | |
1153 | info->date_sec = sn.date_sec; | |
1154 | info->vm_state_size = sn.vm_state_size; | |
1155 | info->vm_clock_nsec = sn.vm_clock_nsec % 1000000000; | |
1156 | info->vm_clock_sec = sn.vm_clock_nsec / 1000000000; | |
1157 | ||
1158 | return info; | |
4ef3982a SH |
1159 | |
1160 | out_aio_context: | |
1161 | aio_context_release(aio_context); | |
1162 | return NULL; | |
44e3e053 | 1163 | } |
8802d1fd | 1164 | |
b756b9ce | 1165 | /* New and old BlockDriverState structs for atomic group operations */ |
ba0c86a3 | 1166 | |
ba5d6ab6 | 1167 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
1168 | |
1169 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
1170 | abort() will be called, clean() will always be called if it present. */ | |
1171 | typedef struct BdrvActionOps { | |
1172 | /* Size of state struct, in bytes. */ | |
1173 | size_t instance_size; | |
1174 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 1175 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 1176 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 1177 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 1178 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 1179 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 1180 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 1181 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
1182 | } BdrvActionOps; |
1183 | ||
1184 | /* | |
1185 | * This structure must be arranged as first member in child type, assuming | |
1186 | * that compiler will also arrange it to the same address with parent instance. | |
1187 | * Later it will be used in free(). | |
1188 | */ | |
ba5d6ab6 | 1189 | struct BlkTransactionState { |
c8a83e85 | 1190 | TransactionAction *action; |
ba0c86a3 | 1191 | const BdrvActionOps *ops; |
ba5d6ab6 | 1192 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
1193 | }; |
1194 | ||
bbe86010 WX |
1195 | /* internal snapshot private data */ |
1196 | typedef struct InternalSnapshotState { | |
1197 | BlkTransactionState common; | |
1198 | BlockDriverState *bs; | |
5d6e96ef | 1199 | AioContext *aio_context; |
bbe86010 WX |
1200 | QEMUSnapshotInfo sn; |
1201 | } InternalSnapshotState; | |
1202 | ||
1203 | static void internal_snapshot_prepare(BlkTransactionState *common, | |
1204 | Error **errp) | |
1205 | { | |
f70edf99 | 1206 | Error *local_err = NULL; |
bbe86010 WX |
1207 | const char *device; |
1208 | const char *name; | |
1209 | BlockDriverState *bs; | |
1210 | QEMUSnapshotInfo old_sn, *sn; | |
1211 | bool ret; | |
1212 | qemu_timeval tv; | |
1213 | BlockdevSnapshotInternal *internal; | |
1214 | InternalSnapshotState *state; | |
1215 | int ret1; | |
1216 | ||
1217 | g_assert(common->action->kind == | |
1218 | TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC); | |
1219 | internal = common->action->blockdev_snapshot_internal_sync; | |
1220 | state = DO_UPCAST(InternalSnapshotState, common, common); | |
1221 | ||
1222 | /* 1. parse input */ | |
1223 | device = internal->device; | |
1224 | name = internal->name; | |
1225 | ||
1226 | /* 2. check for validation */ | |
1227 | bs = bdrv_find(device); | |
1228 | if (!bs) { | |
1229 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1230 | return; | |
1231 | } | |
1232 | ||
5d6e96ef SH |
1233 | /* AioContext is released in .clean() */ |
1234 | state->aio_context = bdrv_get_aio_context(bs); | |
1235 | aio_context_acquire(state->aio_context); | |
1236 | ||
bbe86010 WX |
1237 | if (!bdrv_is_inserted(bs)) { |
1238 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1239 | return; | |
1240 | } | |
1241 | ||
3dc7ca3c SH |
1242 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_INTERNAL_SNAPSHOT, errp)) { |
1243 | return; | |
1244 | } | |
1245 | ||
bbe86010 WX |
1246 | if (bdrv_is_read_only(bs)) { |
1247 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1248 | return; | |
1249 | } | |
1250 | ||
1251 | if (!bdrv_can_snapshot(bs)) { | |
1252 | error_set(errp, QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, | |
1253 | bs->drv->format_name, device, "internal snapshot"); | |
1254 | return; | |
1255 | } | |
1256 | ||
1257 | if (!strlen(name)) { | |
1258 | error_setg(errp, "Name is empty"); | |
1259 | return; | |
1260 | } | |
1261 | ||
1262 | /* check whether a snapshot with name exist */ | |
f70edf99 MA |
1263 | ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, |
1264 | &local_err); | |
1265 | if (local_err) { | |
1266 | error_propagate(errp, local_err); | |
bbe86010 WX |
1267 | return; |
1268 | } else if (ret) { | |
1269 | error_setg(errp, | |
1270 | "Snapshot with name '%s' already exists on device '%s'", | |
1271 | name, device); | |
1272 | return; | |
1273 | } | |
1274 | ||
1275 | /* 3. take the snapshot */ | |
1276 | sn = &state->sn; | |
1277 | pstrcpy(sn->name, sizeof(sn->name), name); | |
1278 | qemu_gettimeofday(&tv); | |
1279 | sn->date_sec = tv.tv_sec; | |
1280 | sn->date_nsec = tv.tv_usec * 1000; | |
1281 | sn->vm_clock_nsec = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); | |
1282 | ||
1283 | ret1 = bdrv_snapshot_create(bs, sn); | |
1284 | if (ret1 < 0) { | |
1285 | error_setg_errno(errp, -ret1, | |
1286 | "Failed to create snapshot '%s' on device '%s'", | |
1287 | name, device); | |
1288 | return; | |
1289 | } | |
1290 | ||
1291 | /* 4. succeed, mark a snapshot is created */ | |
1292 | state->bs = bs; | |
1293 | } | |
1294 | ||
1295 | static void internal_snapshot_abort(BlkTransactionState *common) | |
1296 | { | |
1297 | InternalSnapshotState *state = | |
1298 | DO_UPCAST(InternalSnapshotState, common, common); | |
1299 | BlockDriverState *bs = state->bs; | |
1300 | QEMUSnapshotInfo *sn = &state->sn; | |
1301 | Error *local_error = NULL; | |
1302 | ||
1303 | if (!bs) { | |
1304 | return; | |
1305 | } | |
1306 | ||
1307 | if (bdrv_snapshot_delete(bs, sn->id_str, sn->name, &local_error) < 0) { | |
1308 | error_report("Failed to delete snapshot with id '%s' and name '%s' on " | |
1309 | "device '%s' in abort: %s", | |
1310 | sn->id_str, | |
1311 | sn->name, | |
1312 | bdrv_get_device_name(bs), | |
1313 | error_get_pretty(local_error)); | |
1314 | error_free(local_error); | |
1315 | } | |
1316 | } | |
1317 | ||
5d6e96ef SH |
1318 | static void internal_snapshot_clean(BlkTransactionState *common) |
1319 | { | |
1320 | InternalSnapshotState *state = DO_UPCAST(InternalSnapshotState, | |
1321 | common, common); | |
1322 | ||
1323 | if (state->aio_context) { | |
1324 | aio_context_release(state->aio_context); | |
1325 | } | |
1326 | } | |
1327 | ||
ba0c86a3 | 1328 | /* external snapshot private data */ |
ba5d6ab6 SH |
1329 | typedef struct ExternalSnapshotState { |
1330 | BlkTransactionState common; | |
8802d1fd JC |
1331 | BlockDriverState *old_bs; |
1332 | BlockDriverState *new_bs; | |
5d6e96ef | 1333 | AioContext *aio_context; |
ba5d6ab6 | 1334 | } ExternalSnapshotState; |
8802d1fd | 1335 | |
ba5d6ab6 | 1336 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
1337 | Error **errp) |
1338 | { | |
9b9877ee WX |
1339 | BlockDriver *drv; |
1340 | int flags, ret; | |
0901f67e | 1341 | QDict *options = NULL; |
9b9877ee | 1342 | Error *local_err = NULL; |
0901f67e | 1343 | bool has_device = false; |
e2a31e87 | 1344 | const char *device; |
0901f67e BC |
1345 | bool has_node_name = false; |
1346 | const char *node_name; | |
1347 | bool has_snapshot_node_name = false; | |
1348 | const char *snapshot_node_name; | |
e2a31e87 WX |
1349 | const char *new_image_file; |
1350 | const char *format = "qcow2"; | |
1351 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
1352 | ExternalSnapshotState *state = |
1353 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 1354 | TransactionAction *action = common->action; |
9b9877ee | 1355 | |
e2a31e87 | 1356 | /* get parameters */ |
c8a83e85 | 1357 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 | 1358 | |
0901f67e | 1359 | has_device = action->blockdev_snapshot_sync->has_device; |
e2a31e87 | 1360 | device = action->blockdev_snapshot_sync->device; |
0901f67e BC |
1361 | has_node_name = action->blockdev_snapshot_sync->has_node_name; |
1362 | node_name = action->blockdev_snapshot_sync->node_name; | |
1363 | has_snapshot_node_name = | |
1364 | action->blockdev_snapshot_sync->has_snapshot_node_name; | |
1365 | snapshot_node_name = action->blockdev_snapshot_sync->snapshot_node_name; | |
1366 | ||
e2a31e87 WX |
1367 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; |
1368 | if (action->blockdev_snapshot_sync->has_format) { | |
1369 | format = action->blockdev_snapshot_sync->format; | |
1370 | } | |
1371 | if (action->blockdev_snapshot_sync->has_mode) { | |
1372 | mode = action->blockdev_snapshot_sync->mode; | |
1373 | } | |
1374 | ||
1375 | /* start processing */ | |
9b9877ee WX |
1376 | drv = bdrv_find_format(format); |
1377 | if (!drv) { | |
1378 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1379 | return; | |
1380 | } | |
1381 | ||
0901f67e BC |
1382 | state->old_bs = bdrv_lookup_bs(has_device ? device : NULL, |
1383 | has_node_name ? node_name : NULL, | |
1384 | &local_err); | |
84d18f06 | 1385 | if (local_err) { |
0901f67e BC |
1386 | error_propagate(errp, local_err); |
1387 | return; | |
1388 | } | |
1389 | ||
1390 | if (has_node_name && !has_snapshot_node_name) { | |
1391 | error_setg(errp, "New snapshot node name missing"); | |
1392 | return; | |
1393 | } | |
1394 | ||
1395 | if (has_snapshot_node_name && bdrv_find_node(snapshot_node_name)) { | |
1396 | error_setg(errp, "New snapshot node name already existing"); | |
9b9877ee WX |
1397 | return; |
1398 | } | |
1399 | ||
5d6e96ef SH |
1400 | /* Acquire AioContext now so any threads operating on old_bs stop */ |
1401 | state->aio_context = bdrv_get_aio_context(state->old_bs); | |
1402 | aio_context_acquire(state->aio_context); | |
1403 | ||
ba5d6ab6 | 1404 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
1405 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
1406 | return; | |
1407 | } | |
1408 | ||
3718d8ab FZ |
1409 | if (bdrv_op_is_blocked(state->old_bs, |
1410 | BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) { | |
9b9877ee WX |
1411 | return; |
1412 | } | |
1413 | ||
ba5d6ab6 SH |
1414 | if (!bdrv_is_read_only(state->old_bs)) { |
1415 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
1416 | error_set(errp, QERR_IO_ERROR); |
1417 | return; | |
1418 | } | |
1419 | } | |
1420 | ||
212a5a8f | 1421 | if (!bdrv_is_first_non_filter(state->old_bs)) { |
f6186f49 BC |
1422 | error_set(errp, QERR_FEATURE_DISABLED, "snapshot"); |
1423 | return; | |
1424 | } | |
1425 | ||
ba5d6ab6 | 1426 | flags = state->old_bs->open_flags; |
9b9877ee | 1427 | |
9b9877ee WX |
1428 | /* create new image w/backing file */ |
1429 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1430 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
1431 | state->old_bs->filename, |
1432 | state->old_bs->drv->format_name, | |
9b9877ee | 1433 | NULL, -1, flags, &local_err, false); |
84d18f06 | 1434 | if (local_err) { |
9b9877ee WX |
1435 | error_propagate(errp, local_err); |
1436 | return; | |
1437 | } | |
1438 | } | |
1439 | ||
0901f67e BC |
1440 | if (has_snapshot_node_name) { |
1441 | options = qdict_new(); | |
1442 | qdict_put(options, "node-name", | |
1443 | qstring_from_str(snapshot_node_name)); | |
1444 | } | |
1445 | ||
9b9877ee WX |
1446 | /* TODO Inherit bs->options or only take explicit options with an |
1447 | * extended QMP command? */ | |
f67503e5 | 1448 | assert(state->new_bs == NULL); |
ddf5636d | 1449 | ret = bdrv_open(&state->new_bs, new_image_file, NULL, options, |
34b5d2c6 | 1450 | flags | BDRV_O_NO_BACKING, drv, &local_err); |
f67503e5 | 1451 | /* We will manually add the backing_hd field to the bs later */ |
9b9877ee | 1452 | if (ret != 0) { |
34b5d2c6 | 1453 | error_propagate(errp, local_err); |
9b9877ee WX |
1454 | } |
1455 | } | |
1456 | ||
ba5d6ab6 | 1457 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 1458 | { |
ba5d6ab6 SH |
1459 | ExternalSnapshotState *state = |
1460 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 1461 | |
5d6e96ef SH |
1462 | bdrv_set_aio_context(state->new_bs, state->aio_context); |
1463 | ||
ba5d6ab6 SH |
1464 | /* This removes our old bs and adds the new bs */ |
1465 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
1466 | /* We don't need (or want) to use the transactional |
1467 | * bdrv_reopen_multiple() across all the entries at once, because we | |
1468 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 1469 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 | 1470 | NULL); |
5d6e96ef SH |
1471 | |
1472 | aio_context_release(state->aio_context); | |
3b0047e8 WX |
1473 | } |
1474 | ||
ba5d6ab6 | 1475 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 1476 | { |
ba5d6ab6 SH |
1477 | ExternalSnapshotState *state = |
1478 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1479 | if (state->new_bs) { | |
4f6fd349 | 1480 | bdrv_unref(state->new_bs); |
96b86bf7 | 1481 | } |
5d6e96ef SH |
1482 | if (state->aio_context) { |
1483 | aio_context_release(state->aio_context); | |
1484 | } | |
96b86bf7 WX |
1485 | } |
1486 | ||
3037f364 SH |
1487 | typedef struct DriveBackupState { |
1488 | BlkTransactionState common; | |
1489 | BlockDriverState *bs; | |
5d6e96ef | 1490 | AioContext *aio_context; |
3037f364 SH |
1491 | BlockJob *job; |
1492 | } DriveBackupState; | |
1493 | ||
1494 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1495 | { | |
1496 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
5d6e96ef | 1497 | BlockDriverState *bs; |
3037f364 SH |
1498 | DriveBackup *backup; |
1499 | Error *local_err = NULL; | |
1500 | ||
1501 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1502 | backup = common->action->drive_backup; | |
1503 | ||
5d6e96ef SH |
1504 | bs = bdrv_find(backup->device); |
1505 | if (!bs) { | |
1506 | error_set(errp, QERR_DEVICE_NOT_FOUND, backup->device); | |
1507 | return; | |
1508 | } | |
1509 | ||
1510 | /* AioContext is released in .clean() */ | |
1511 | state->aio_context = bdrv_get_aio_context(bs); | |
1512 | aio_context_acquire(state->aio_context); | |
1513 | ||
3037f364 SH |
1514 | qmp_drive_backup(backup->device, backup->target, |
1515 | backup->has_format, backup->format, | |
b53169ea | 1516 | backup->sync, |
3037f364 SH |
1517 | backup->has_mode, backup->mode, |
1518 | backup->has_speed, backup->speed, | |
1519 | backup->has_on_source_error, backup->on_source_error, | |
1520 | backup->has_on_target_error, backup->on_target_error, | |
1521 | &local_err); | |
84d18f06 | 1522 | if (local_err) { |
3037f364 | 1523 | error_propagate(errp, local_err); |
3037f364 SH |
1524 | return; |
1525 | } | |
1526 | ||
5d6e96ef | 1527 | state->bs = bs; |
3037f364 SH |
1528 | state->job = state->bs->job; |
1529 | } | |
1530 | ||
1531 | static void drive_backup_abort(BlkTransactionState *common) | |
1532 | { | |
1533 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1534 | BlockDriverState *bs = state->bs; | |
1535 | ||
1536 | /* Only cancel if it's the job we started */ | |
1537 | if (bs && bs->job && bs->job == state->job) { | |
1538 | block_job_cancel_sync(bs->job); | |
1539 | } | |
1540 | } | |
1541 | ||
5d6e96ef SH |
1542 | static void drive_backup_clean(BlkTransactionState *common) |
1543 | { | |
1544 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1545 | ||
1546 | if (state->aio_context) { | |
1547 | aio_context_release(state->aio_context); | |
1548 | } | |
1549 | } | |
1550 | ||
bd8baecd FZ |
1551 | typedef struct BlockdevBackupState { |
1552 | BlkTransactionState common; | |
1553 | BlockDriverState *bs; | |
1554 | BlockJob *job; | |
1555 | AioContext *aio_context; | |
1556 | } BlockdevBackupState; | |
1557 | ||
1558 | static void blockdev_backup_prepare(BlkTransactionState *common, Error **errp) | |
1559 | { | |
1560 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1561 | BlockdevBackup *backup; | |
1562 | BlockDriverState *bs, *target; | |
1563 | Error *local_err = NULL; | |
1564 | ||
1565 | assert(common->action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP); | |
1566 | backup = common->action->blockdev_backup; | |
1567 | ||
1568 | bs = bdrv_find(backup->device); | |
1569 | if (!bs) { | |
1570 | error_set(errp, QERR_DEVICE_NOT_FOUND, backup->device); | |
1571 | return; | |
1572 | } | |
1573 | ||
1574 | target = bdrv_find(backup->target); | |
1575 | if (!target) { | |
1576 | error_set(errp, QERR_DEVICE_NOT_FOUND, backup->target); | |
1577 | return; | |
1578 | } | |
1579 | ||
1580 | /* AioContext is released in .clean() */ | |
1581 | state->aio_context = bdrv_get_aio_context(bs); | |
1582 | if (state->aio_context != bdrv_get_aio_context(target)) { | |
1583 | state->aio_context = NULL; | |
1584 | error_setg(errp, "Backup between two IO threads is not implemented"); | |
1585 | return; | |
1586 | } | |
1587 | aio_context_acquire(state->aio_context); | |
1588 | ||
1589 | qmp_blockdev_backup(backup->device, backup->target, | |
1590 | backup->sync, | |
1591 | backup->has_speed, backup->speed, | |
1592 | backup->has_on_source_error, backup->on_source_error, | |
1593 | backup->has_on_target_error, backup->on_target_error, | |
1594 | &local_err); | |
1595 | if (local_err) { | |
1596 | error_propagate(errp, local_err); | |
1597 | return; | |
1598 | } | |
1599 | ||
1600 | state->bs = bs; | |
1601 | state->job = state->bs->job; | |
1602 | } | |
1603 | ||
1604 | static void blockdev_backup_abort(BlkTransactionState *common) | |
1605 | { | |
1606 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1607 | BlockDriverState *bs = state->bs; | |
1608 | ||
1609 | /* Only cancel if it's the job we started */ | |
1610 | if (bs && bs->job && bs->job == state->job) { | |
1611 | block_job_cancel_sync(bs->job); | |
1612 | } | |
1613 | } | |
1614 | ||
1615 | static void blockdev_backup_clean(BlkTransactionState *common) | |
1616 | { | |
1617 | BlockdevBackupState *state = DO_UPCAST(BlockdevBackupState, common, common); | |
1618 | ||
1619 | if (state->aio_context) { | |
1620 | aio_context_release(state->aio_context); | |
1621 | } | |
1622 | } | |
1623 | ||
78b18b78 SH |
1624 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1625 | { | |
1626 | error_setg(errp, "Transaction aborted using Abort action"); | |
1627 | } | |
1628 | ||
1629 | static void abort_commit(BlkTransactionState *common) | |
1630 | { | |
dfc6f865 | 1631 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1632 | } |
1633 | ||
ba0c86a3 | 1634 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1635 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1636 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1637 | .prepare = external_snapshot_prepare, |
1638 | .commit = external_snapshot_commit, | |
1639 | .abort = external_snapshot_abort, | |
1640 | }, | |
3037f364 SH |
1641 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1642 | .instance_size = sizeof(DriveBackupState), | |
1643 | .prepare = drive_backup_prepare, | |
1644 | .abort = drive_backup_abort, | |
5d6e96ef | 1645 | .clean = drive_backup_clean, |
3037f364 | 1646 | }, |
bd8baecd FZ |
1647 | [TRANSACTION_ACTION_KIND_BLOCKDEV_BACKUP] = { |
1648 | .instance_size = sizeof(BlockdevBackupState), | |
1649 | .prepare = blockdev_backup_prepare, | |
1650 | .abort = blockdev_backup_abort, | |
1651 | .clean = blockdev_backup_clean, | |
1652 | }, | |
78b18b78 SH |
1653 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1654 | .instance_size = sizeof(BlkTransactionState), | |
1655 | .prepare = abort_prepare, | |
1656 | .commit = abort_commit, | |
1657 | }, | |
bbe86010 WX |
1658 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_INTERNAL_SYNC] = { |
1659 | .instance_size = sizeof(InternalSnapshotState), | |
1660 | .prepare = internal_snapshot_prepare, | |
1661 | .abort = internal_snapshot_abort, | |
5d6e96ef | 1662 | .clean = internal_snapshot_clean, |
bbe86010 | 1663 | }, |
ba0c86a3 WX |
1664 | }; |
1665 | ||
8802d1fd | 1666 | /* |
b756b9ce SH |
1667 | * 'Atomic' group operations. The operations are performed as a set, and if |
1668 | * any fail then we roll back all operations in the group. | |
8802d1fd | 1669 | */ |
c8a83e85 | 1670 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1671 | { |
c8a83e85 | 1672 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1673 | BlkTransactionState *state, *next; |
43e17041 | 1674 | Error *local_err = NULL; |
8802d1fd | 1675 | |
ba5d6ab6 | 1676 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1677 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1678 | ||
b756b9ce | 1679 | /* drain all i/o before any operations */ |
8802d1fd JC |
1680 | bdrv_drain_all(); |
1681 | ||
b756b9ce | 1682 | /* We don't do anything in this loop that commits us to the operations */ |
8802d1fd | 1683 | while (NULL != dev_entry) { |
c8a83e85 | 1684 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1685 | const BdrvActionOps *ops; |
52e7c241 | 1686 | |
8802d1fd JC |
1687 | dev_info = dev_entry->value; |
1688 | dev_entry = dev_entry->next; | |
1689 | ||
ba0c86a3 WX |
1690 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1691 | ||
1692 | ops = &actions[dev_info->kind]; | |
aa3fe714 HR |
1693 | assert(ops->instance_size > 0); |
1694 | ||
ba5d6ab6 SH |
1695 | state = g_malloc0(ops->instance_size); |
1696 | state->ops = ops; | |
1697 | state->action = dev_info; | |
1698 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1699 | |
ba5d6ab6 | 1700 | state->ops->prepare(state, &local_err); |
84d18f06 | 1701 | if (local_err) { |
ba0c86a3 WX |
1702 | error_propagate(errp, local_err); |
1703 | goto delete_and_fail; | |
8802d1fd | 1704 | } |
8802d1fd JC |
1705 | } |
1706 | ||
ba5d6ab6 | 1707 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1708 | if (state->ops->commit) { |
1709 | state->ops->commit(state); | |
1710 | } | |
8802d1fd JC |
1711 | } |
1712 | ||
1713 | /* success */ | |
1714 | goto exit; | |
1715 | ||
1716 | delete_and_fail: | |
b756b9ce | 1717 | /* failure, and it is all-or-none; roll back all operations */ |
ba5d6ab6 SH |
1718 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1719 | if (state->ops->abort) { | |
1720 | state->ops->abort(state); | |
ba0c86a3 | 1721 | } |
8802d1fd JC |
1722 | } |
1723 | exit: | |
ba5d6ab6 SH |
1724 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1725 | if (state->ops->clean) { | |
1726 | state->ops->clean(state); | |
ba0c86a3 | 1727 | } |
ba5d6ab6 | 1728 | g_free(state); |
8802d1fd | 1729 | } |
8802d1fd JC |
1730 | } |
1731 | ||
1732 | ||
6007cdd4 | 1733 | static void eject_device(BlockBackend *blk, int force, Error **errp) |
666daa68 | 1734 | { |
6007cdd4 | 1735 | BlockDriverState *bs = blk_bs(blk); |
e3442099 SH |
1736 | AioContext *aio_context; |
1737 | ||
1738 | aio_context = bdrv_get_aio_context(bs); | |
1739 | aio_context_acquire(aio_context); | |
6007cdd4 | 1740 | |
3718d8ab | 1741 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) { |
e3442099 | 1742 | goto out; |
2d3735d3 | 1743 | } |
a7f53e26 | 1744 | if (!blk_dev_has_removable_media(blk)) { |
f231b88d CR |
1745 | error_setg(errp, "Device '%s' is not removable", |
1746 | bdrv_get_device_name(bs)); | |
e3442099 | 1747 | goto out; |
ea8f942f | 1748 | } |
92d48558 | 1749 | |
a7f53e26 MA |
1750 | if (blk_dev_is_medium_locked(blk) && !blk_dev_is_tray_open(blk)) { |
1751 | blk_dev_eject_request(blk, force); | |
025ccaa7 | 1752 | if (!force) { |
f231b88d CR |
1753 | error_setg(errp, "Device '%s' is locked", |
1754 | bdrv_get_device_name(bs)); | |
e3442099 | 1755 | goto out; |
025ccaa7 | 1756 | } |
666daa68 | 1757 | } |
92d48558 | 1758 | |
3b5276b5 | 1759 | bdrv_close(bs); |
e3442099 SH |
1760 | |
1761 | out: | |
1762 | aio_context_release(aio_context); | |
666daa68 MA |
1763 | } |
1764 | ||
c245b6a3 | 1765 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 | 1766 | { |
6007cdd4 | 1767 | BlockBackend *blk; |
666daa68 | 1768 | |
6007cdd4 MA |
1769 | blk = blk_by_name(device); |
1770 | if (!blk) { | |
c245b6a3 LC |
1771 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1772 | return; | |
92d48558 LC |
1773 | } |
1774 | ||
6007cdd4 | 1775 | eject_device(blk, force, errp); |
666daa68 MA |
1776 | } |
1777 | ||
12d3ba82 BC |
1778 | void qmp_block_passwd(bool has_device, const char *device, |
1779 | bool has_node_name, const char *node_name, | |
1780 | const char *password, Error **errp) | |
666daa68 | 1781 | { |
12d3ba82 | 1782 | Error *local_err = NULL; |
666daa68 | 1783 | BlockDriverState *bs; |
e3442099 | 1784 | AioContext *aio_context; |
666daa68 | 1785 | |
12d3ba82 BC |
1786 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
1787 | has_node_name ? node_name : NULL, | |
1788 | &local_err); | |
84d18f06 | 1789 | if (local_err) { |
12d3ba82 | 1790 | error_propagate(errp, local_err); |
a4dea8a9 | 1791 | return; |
666daa68 MA |
1792 | } |
1793 | ||
e3442099 SH |
1794 | aio_context = bdrv_get_aio_context(bs); |
1795 | aio_context_acquire(aio_context); | |
1796 | ||
4d2855a3 | 1797 | bdrv_add_key(bs, password, errp); |
e3442099 | 1798 | |
e3442099 | 1799 | aio_context_release(aio_context); |
666daa68 MA |
1800 | } |
1801 | ||
e3442099 | 1802 | /* Assumes AioContext is held */ |
333a96ec LC |
1803 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1804 | int bdrv_flags, BlockDriver *drv, | |
1805 | const char *password, Error **errp) | |
1806 | { | |
34b5d2c6 | 1807 | Error *local_err = NULL; |
0eef407c LC |
1808 | int ret; |
1809 | ||
ddf5636d | 1810 | ret = bdrv_open(&bs, filename, NULL, NULL, bdrv_flags, drv, &local_err); |
0eef407c | 1811 | if (ret < 0) { |
34b5d2c6 | 1812 | error_propagate(errp, local_err); |
333a96ec LC |
1813 | return; |
1814 | } | |
1815 | ||
4d2855a3 | 1816 | bdrv_add_key(bs, password, errp); |
333a96ec LC |
1817 | } |
1818 | ||
1819 | void qmp_change_blockdev(const char *device, const char *filename, | |
314f7ea7 | 1820 | const char *format, Error **errp) |
666daa68 | 1821 | { |
6007cdd4 | 1822 | BlockBackend *blk; |
666daa68 | 1823 | BlockDriverState *bs; |
e3442099 | 1824 | AioContext *aio_context; |
666daa68 MA |
1825 | BlockDriver *drv = NULL; |
1826 | int bdrv_flags; | |
92d48558 | 1827 | Error *err = NULL; |
666daa68 | 1828 | |
6007cdd4 MA |
1829 | blk = blk_by_name(device); |
1830 | if (!blk) { | |
333a96ec LC |
1831 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1832 | return; | |
666daa68 | 1833 | } |
6007cdd4 | 1834 | bs = blk_bs(blk); |
333a96ec | 1835 | |
e3442099 SH |
1836 | aio_context = bdrv_get_aio_context(bs); |
1837 | aio_context_acquire(aio_context); | |
1838 | ||
333a96ec | 1839 | if (format) { |
b64ec4e4 | 1840 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1841 | if (!drv) { |
333a96ec | 1842 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
e3442099 | 1843 | goto out; |
666daa68 MA |
1844 | } |
1845 | } | |
333a96ec | 1846 | |
6007cdd4 | 1847 | eject_device(blk, 0, &err); |
84d18f06 | 1848 | if (err) { |
333a96ec | 1849 | error_propagate(errp, err); |
e3442099 | 1850 | goto out; |
666daa68 | 1851 | } |
333a96ec | 1852 | |
528f7663 | 1853 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1854 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1855 | |
1856 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
e3442099 SH |
1857 | |
1858 | out: | |
1859 | aio_context_release(aio_context); | |
666daa68 | 1860 | } |
9063f814 | 1861 | |
727f005e | 1862 | /* throttling disk I/O limits */ |
80047da5 | 1863 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
3e9fab69 BC |
1864 | int64_t bps_wr, |
1865 | int64_t iops, | |
1866 | int64_t iops_rd, | |
1867 | int64_t iops_wr, | |
1868 | bool has_bps_max, | |
1869 | int64_t bps_max, | |
1870 | bool has_bps_rd_max, | |
1871 | int64_t bps_rd_max, | |
1872 | bool has_bps_wr_max, | |
1873 | int64_t bps_wr_max, | |
1874 | bool has_iops_max, | |
1875 | int64_t iops_max, | |
1876 | bool has_iops_rd_max, | |
1877 | int64_t iops_rd_max, | |
1878 | bool has_iops_wr_max, | |
2024c1df BC |
1879 | int64_t iops_wr_max, |
1880 | bool has_iops_size, | |
1881 | int64_t iops_size, Error **errp) | |
727f005e | 1882 | { |
cc0681c4 | 1883 | ThrottleConfig cfg; |
727f005e | 1884 | BlockDriverState *bs; |
b15446fd | 1885 | AioContext *aio_context; |
727f005e | 1886 | |
80047da5 | 1887 | bs = bdrv_find(device); |
727f005e | 1888 | if (!bs) { |
80047da5 LC |
1889 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1890 | return; | |
727f005e ZYW |
1891 | } |
1892 | ||
cc0681c4 BC |
1893 | memset(&cfg, 0, sizeof(cfg)); |
1894 | cfg.buckets[THROTTLE_BPS_TOTAL].avg = bps; | |
1895 | cfg.buckets[THROTTLE_BPS_READ].avg = bps_rd; | |
1896 | cfg.buckets[THROTTLE_BPS_WRITE].avg = bps_wr; | |
1897 | ||
1898 | cfg.buckets[THROTTLE_OPS_TOTAL].avg = iops; | |
1899 | cfg.buckets[THROTTLE_OPS_READ].avg = iops_rd; | |
1900 | cfg.buckets[THROTTLE_OPS_WRITE].avg = iops_wr; | |
1901 | ||
3e9fab69 BC |
1902 | if (has_bps_max) { |
1903 | cfg.buckets[THROTTLE_BPS_TOTAL].max = bps_max; | |
1904 | } | |
1905 | if (has_bps_rd_max) { | |
1906 | cfg.buckets[THROTTLE_BPS_READ].max = bps_rd_max; | |
1907 | } | |
1908 | if (has_bps_wr_max) { | |
1909 | cfg.buckets[THROTTLE_BPS_WRITE].max = bps_wr_max; | |
1910 | } | |
1911 | if (has_iops_max) { | |
1912 | cfg.buckets[THROTTLE_OPS_TOTAL].max = iops_max; | |
1913 | } | |
1914 | if (has_iops_rd_max) { | |
1915 | cfg.buckets[THROTTLE_OPS_READ].max = iops_rd_max; | |
1916 | } | |
1917 | if (has_iops_wr_max) { | |
1918 | cfg.buckets[THROTTLE_OPS_WRITE].max = iops_wr_max; | |
1919 | } | |
727f005e | 1920 | |
2024c1df BC |
1921 | if (has_iops_size) { |
1922 | cfg.op_size = iops_size; | |
1923 | } | |
cc0681c4 BC |
1924 | |
1925 | if (!check_throttle_config(&cfg, errp)) { | |
80047da5 | 1926 | return; |
727f005e ZYW |
1927 | } |
1928 | ||
b15446fd SH |
1929 | aio_context = bdrv_get_aio_context(bs); |
1930 | aio_context_acquire(aio_context); | |
1931 | ||
cc0681c4 | 1932 | if (!bs->io_limits_enabled && throttle_enabled(&cfg)) { |
727f005e | 1933 | bdrv_io_limits_enable(bs); |
cc0681c4 | 1934 | } else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) { |
727f005e | 1935 | bdrv_io_limits_disable(bs); |
cc0681c4 BC |
1936 | } |
1937 | ||
1938 | if (bs->io_limits_enabled) { | |
1939 | bdrv_set_io_limits(bs, &cfg); | |
727f005e | 1940 | } |
b15446fd SH |
1941 | |
1942 | aio_context_release(aio_context); | |
727f005e ZYW |
1943 | } |
1944 | ||
3e5a50d6 | 1945 | int hmp_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
9063f814 RH |
1946 | { |
1947 | const char *id = qdict_get_str(qdict, "id"); | |
7e7d56d9 | 1948 | BlockBackend *blk; |
9063f814 | 1949 | BlockDriverState *bs; |
8ad4202b | 1950 | AioContext *aio_context; |
3718d8ab | 1951 | Error *local_err = NULL; |
9063f814 | 1952 | |
7e7d56d9 MA |
1953 | blk = blk_by_name(id); |
1954 | if (!blk) { | |
b1422f20 | 1955 | error_report("Device '%s' not found", id); |
9063f814 RH |
1956 | return -1; |
1957 | } | |
7e7d56d9 | 1958 | bs = blk_bs(blk); |
8ad4202b | 1959 | |
26f8b3a8 | 1960 | if (!blk_legacy_dinfo(blk)) { |
48f364dd MA |
1961 | error_report("Deleting device added with blockdev-add" |
1962 | " is not supported"); | |
1963 | return -1; | |
1964 | } | |
1965 | ||
8ad4202b SH |
1966 | aio_context = bdrv_get_aio_context(bs); |
1967 | aio_context_acquire(aio_context); | |
1968 | ||
3718d8ab | 1969 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { |
565f65d2 | 1970 | error_report_err(local_err); |
8ad4202b | 1971 | aio_context_release(aio_context); |
8591675f MT |
1972 | return -1; |
1973 | } | |
9063f814 RH |
1974 | |
1975 | /* quiesce block driver; prevent further io */ | |
922453bc | 1976 | bdrv_drain_all(); |
9063f814 RH |
1977 | bdrv_flush(bs); |
1978 | bdrv_close(bs); | |
1979 | ||
fa879d62 | 1980 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1981 | * then we need to make the drive anonymous until the device |
1982 | * can be removed. If this is a drive with no device backing | |
1983 | * then we can just get rid of the block driver state right here. | |
1984 | */ | |
a7f53e26 | 1985 | if (blk_get_attached_dev(blk)) { |
3e5a50d6 | 1986 | blk_hide_on_behalf_of_hmp_drive_del(blk); |
293c51a6 SH |
1987 | /* Further I/O must not pause the guest */ |
1988 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1989 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 | 1990 | } else { |
b9fe8a7a | 1991 | blk_unref(blk); |
9063f814 RH |
1992 | } |
1993 | ||
8ad4202b | 1994 | aio_context_release(aio_context); |
9063f814 RH |
1995 | return 0; |
1996 | } | |
6d4a2b3a | 1997 | |
3b1dbd11 BC |
1998 | void qmp_block_resize(bool has_device, const char *device, |
1999 | bool has_node_name, const char *node_name, | |
2000 | int64_t size, Error **errp) | |
6d4a2b3a | 2001 | { |
3b1dbd11 | 2002 | Error *local_err = NULL; |
6d4a2b3a | 2003 | BlockDriverState *bs; |
927e0e76 | 2004 | AioContext *aio_context; |
8732901e | 2005 | int ret; |
6d4a2b3a | 2006 | |
3b1dbd11 BC |
2007 | bs = bdrv_lookup_bs(has_device ? device : NULL, |
2008 | has_node_name ? node_name : NULL, | |
2009 | &local_err); | |
84d18f06 | 2010 | if (local_err) { |
3b1dbd11 BC |
2011 | error_propagate(errp, local_err); |
2012 | return; | |
2013 | } | |
2014 | ||
927e0e76 SH |
2015 | aio_context = bdrv_get_aio_context(bs); |
2016 | aio_context_acquire(aio_context); | |
2017 | ||
3b1dbd11 BC |
2018 | if (!bdrv_is_first_non_filter(bs)) { |
2019 | error_set(errp, QERR_FEATURE_DISABLED, "resize"); | |
927e0e76 | 2020 | goto out; |
6d4a2b3a CH |
2021 | } |
2022 | ||
2023 | if (size < 0) { | |
939a1cc3 | 2024 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
927e0e76 | 2025 | goto out; |
6d4a2b3a CH |
2026 | } |
2027 | ||
9c75e168 JC |
2028 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_RESIZE, NULL)) { |
2029 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
927e0e76 | 2030 | goto out; |
9c75e168 JC |
2031 | } |
2032 | ||
92b7a08d PL |
2033 | /* complete all in-flight operations before resizing the device */ |
2034 | bdrv_drain_all(); | |
2035 | ||
8732901e KW |
2036 | ret = bdrv_truncate(bs, size); |
2037 | switch (ret) { | |
939a1cc3 SH |
2038 | case 0: |
2039 | break; | |
2040 | case -ENOMEDIUM: | |
2041 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
2042 | break; | |
2043 | case -ENOTSUP: | |
2044 | error_set(errp, QERR_UNSUPPORTED); | |
2045 | break; | |
2046 | case -EACCES: | |
2047 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
2048 | break; | |
2049 | case -EBUSY: | |
2050 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
2051 | break; | |
2052 | default: | |
8732901e | 2053 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 2054 | break; |
6d4a2b3a | 2055 | } |
927e0e76 SH |
2056 | |
2057 | out: | |
2058 | aio_context_release(aio_context); | |
6d4a2b3a | 2059 | } |
12bd451f | 2060 | |
9abf2dba | 2061 | static void block_job_cb(void *opaque, int ret) |
12bd451f | 2062 | { |
723c5d93 SH |
2063 | /* Note that this function may be executed from another AioContext besides |
2064 | * the QEMU main loop. If you need to access anything that assumes the | |
2065 | * QEMU global mutex, use a BH or introduce a mutex. | |
2066 | */ | |
2067 | ||
12bd451f | 2068 | BlockDriverState *bs = opaque; |
bcada37b | 2069 | const char *msg = NULL; |
12bd451f | 2070 | |
9abf2dba | 2071 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
2072 | |
2073 | assert(bs->job); | |
bcada37b | 2074 | |
12bd451f | 2075 | if (ret < 0) { |
bcada37b | 2076 | msg = strerror(-ret); |
12bd451f SH |
2077 | } |
2078 | ||
370521a1 | 2079 | if (block_job_is_cancelled(bs->job)) { |
bcada37b | 2080 | block_job_event_cancelled(bs->job); |
370521a1 | 2081 | } else { |
bcada37b | 2082 | block_job_event_completed(bs->job, msg); |
370521a1 | 2083 | } |
aa398a5c | 2084 | |
fa510ebf | 2085 | bdrv_put_ref_bh_schedule(bs); |
12bd451f SH |
2086 | } |
2087 | ||
13d8cc51 JC |
2088 | void qmp_block_stream(const char *device, |
2089 | bool has_base, const char *base, | |
2090 | bool has_backing_file, const char *backing_file, | |
2091 | bool has_speed, int64_t speed, | |
1d809098 PB |
2092 | bool has_on_error, BlockdevOnError on_error, |
2093 | Error **errp) | |
12bd451f SH |
2094 | { |
2095 | BlockDriverState *bs; | |
c8c3080f | 2096 | BlockDriverState *base_bs = NULL; |
f3e69beb | 2097 | AioContext *aio_context; |
fd7f8c65 | 2098 | Error *local_err = NULL; |
13d8cc51 | 2099 | const char *base_name = NULL; |
12bd451f | 2100 | |
1d809098 PB |
2101 | if (!has_on_error) { |
2102 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
2103 | } | |
2104 | ||
12bd451f SH |
2105 | bs = bdrv_find(device); |
2106 | if (!bs) { | |
2107 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2108 | return; | |
2109 | } | |
2110 | ||
f3e69beb SH |
2111 | aio_context = bdrv_get_aio_context(bs); |
2112 | aio_context_acquire(aio_context); | |
2113 | ||
628ff683 | 2114 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) { |
f3e69beb | 2115 | goto out; |
628ff683 FZ |
2116 | } |
2117 | ||
13d8cc51 | 2118 | if (has_base) { |
c8c3080f MT |
2119 | base_bs = bdrv_find_backing_image(bs, base); |
2120 | if (base_bs == NULL) { | |
2121 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
f3e69beb | 2122 | goto out; |
c8c3080f | 2123 | } |
f3e69beb | 2124 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
13d8cc51 | 2125 | base_name = base; |
12bd451f SH |
2126 | } |
2127 | ||
13d8cc51 JC |
2128 | /* if we are streaming the entire chain, the result will have no backing |
2129 | * file, and specifying one is therefore an error */ | |
2130 | if (base_bs == NULL && has_backing_file) { | |
2131 | error_setg(errp, "backing file specified, but streaming the " | |
2132 | "entire chain"); | |
f3e69beb | 2133 | goto out; |
13d8cc51 JC |
2134 | } |
2135 | ||
2136 | /* backing_file string overrides base bs filename */ | |
2137 | base_name = has_backing_file ? backing_file : base_name; | |
2138 | ||
2139 | stream_start(bs, base_bs, base_name, has_speed ? speed : 0, | |
1d809098 | 2140 | on_error, block_job_cb, bs, &local_err); |
84d18f06 | 2141 | if (local_err) { |
fd7f8c65 | 2142 | error_propagate(errp, local_err); |
f3e69beb | 2143 | goto out; |
12bd451f SH |
2144 | } |
2145 | ||
2146 | trace_qmp_block_stream(bs, bs->job); | |
f3e69beb SH |
2147 | |
2148 | out: | |
2149 | aio_context_release(aio_context); | |
12bd451f | 2150 | } |
2d47c6e9 | 2151 | |
ed61fc10 | 2152 | void qmp_block_commit(const char *device, |
7676e2c5 JC |
2153 | bool has_base, const char *base, |
2154 | bool has_top, const char *top, | |
54e26900 | 2155 | bool has_backing_file, const char *backing_file, |
ed61fc10 JC |
2156 | bool has_speed, int64_t speed, |
2157 | Error **errp) | |
2158 | { | |
2159 | BlockDriverState *bs; | |
2160 | BlockDriverState *base_bs, *top_bs; | |
9e85cd5c | 2161 | AioContext *aio_context; |
ed61fc10 JC |
2162 | Error *local_err = NULL; |
2163 | /* This will be part of the QMP command, if/when the | |
2164 | * BlockdevOnError change for blkmirror makes it in | |
2165 | */ | |
92aa5c6d | 2166 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 | 2167 | |
54504663 HR |
2168 | if (!has_speed) { |
2169 | speed = 0; | |
2170 | } | |
2171 | ||
7676e2c5 JC |
2172 | /* Important Note: |
2173 | * libvirt relies on the DeviceNotFound error class in order to probe for | |
2174 | * live commit feature versions; for this to work, we must make sure to | |
2175 | * perform the device lookup before any generic errors that may occur in a | |
2176 | * scenario in which all optional arguments are omitted. */ | |
ed61fc10 JC |
2177 | bs = bdrv_find(device); |
2178 | if (!bs) { | |
2179 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2180 | return; | |
628ff683 FZ |
2181 | } |
2182 | ||
9e85cd5c SH |
2183 | aio_context = bdrv_get_aio_context(bs); |
2184 | aio_context_acquire(aio_context); | |
2185 | ||
2186 | /* drain all i/o before commits */ | |
2187 | bdrv_drain_all(); | |
2188 | ||
bb00021d | 2189 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT_SOURCE, errp)) { |
9e85cd5c | 2190 | goto out; |
ed61fc10 | 2191 | } |
ed61fc10 JC |
2192 | |
2193 | /* default top_bs is the active layer */ | |
2194 | top_bs = bs; | |
2195 | ||
7676e2c5 | 2196 | if (has_top && top) { |
ed61fc10 JC |
2197 | if (strcmp(bs->filename, top) != 0) { |
2198 | top_bs = bdrv_find_backing_image(bs, top); | |
2199 | } | |
2200 | } | |
2201 | ||
2202 | if (top_bs == NULL) { | |
2203 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
9e85cd5c | 2204 | goto out; |
ed61fc10 JC |
2205 | } |
2206 | ||
9e85cd5c SH |
2207 | assert(bdrv_get_aio_context(top_bs) == aio_context); |
2208 | ||
d5208c45 JC |
2209 | if (has_base && base) { |
2210 | base_bs = bdrv_find_backing_image(top_bs, base); | |
2211 | } else { | |
2212 | base_bs = bdrv_find_base(top_bs); | |
2213 | } | |
2214 | ||
2215 | if (base_bs == NULL) { | |
2216 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
9e85cd5c | 2217 | goto out; |
d5208c45 JC |
2218 | } |
2219 | ||
9e85cd5c SH |
2220 | assert(bdrv_get_aio_context(base_bs) == aio_context); |
2221 | ||
bb00021d FZ |
2222 | if (bdrv_op_is_blocked(base_bs, BLOCK_OP_TYPE_COMMIT_TARGET, errp)) { |
2223 | goto out; | |
2224 | } | |
2225 | ||
7676e2c5 JC |
2226 | /* Do not allow attempts to commit an image into itself */ |
2227 | if (top_bs == base_bs) { | |
2228 | error_setg(errp, "cannot commit an image into itself"); | |
9e85cd5c | 2229 | goto out; |
7676e2c5 JC |
2230 | } |
2231 | ||
20a63d2c | 2232 | if (top_bs == bs) { |
54e26900 JC |
2233 | if (has_backing_file) { |
2234 | error_setg(errp, "'backing-file' specified," | |
2235 | " but 'top' is the active layer"); | |
9e85cd5c | 2236 | goto out; |
54e26900 | 2237 | } |
20a63d2c FZ |
2238 | commit_active_start(bs, base_bs, speed, on_error, block_job_cb, |
2239 | bs, &local_err); | |
2240 | } else { | |
2241 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, | |
54e26900 | 2242 | has_backing_file ? backing_file : NULL, &local_err); |
20a63d2c | 2243 | } |
ed61fc10 JC |
2244 | if (local_err != NULL) { |
2245 | error_propagate(errp, local_err); | |
9e85cd5c | 2246 | goto out; |
ed61fc10 | 2247 | } |
9e85cd5c SH |
2248 | |
2249 | out: | |
2250 | aio_context_release(aio_context); | |
ed61fc10 JC |
2251 | } |
2252 | ||
99a9addf SH |
2253 | void qmp_drive_backup(const char *device, const char *target, |
2254 | bool has_format, const char *format, | |
b53169ea | 2255 | enum MirrorSyncMode sync, |
99a9addf SH |
2256 | bool has_mode, enum NewImageMode mode, |
2257 | bool has_speed, int64_t speed, | |
2258 | bool has_on_source_error, BlockdevOnError on_source_error, | |
2259 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2260 | Error **errp) | |
2261 | { | |
2262 | BlockDriverState *bs; | |
2263 | BlockDriverState *target_bs; | |
fc5d3f84 | 2264 | BlockDriverState *source = NULL; |
761731b1 | 2265 | AioContext *aio_context; |
99a9addf SH |
2266 | BlockDriver *drv = NULL; |
2267 | Error *local_err = NULL; | |
2268 | int flags; | |
2269 | int64_t size; | |
2270 | int ret; | |
2271 | ||
2272 | if (!has_speed) { | |
2273 | speed = 0; | |
2274 | } | |
2275 | if (!has_on_source_error) { | |
2276 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2277 | } | |
2278 | if (!has_on_target_error) { | |
2279 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2280 | } | |
2281 | if (!has_mode) { | |
2282 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2283 | } | |
2284 | ||
2285 | bs = bdrv_find(device); | |
2286 | if (!bs) { | |
2287 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2288 | return; | |
2289 | } | |
2290 | ||
761731b1 SH |
2291 | aio_context = bdrv_get_aio_context(bs); |
2292 | aio_context_acquire(aio_context); | |
2293 | ||
c29c1dd3 FZ |
2294 | /* Although backup_run has this check too, we need to use bs->drv below, so |
2295 | * do an early check redundantly. */ | |
99a9addf SH |
2296 | if (!bdrv_is_inserted(bs)) { |
2297 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
761731b1 | 2298 | goto out; |
99a9addf SH |
2299 | } |
2300 | ||
2301 | if (!has_format) { | |
2302 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2303 | } | |
2304 | if (format) { | |
2305 | drv = bdrv_find_format(format); | |
2306 | if (!drv) { | |
2307 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
761731b1 | 2308 | goto out; |
99a9addf SH |
2309 | } |
2310 | } | |
2311 | ||
c29c1dd3 | 2312 | /* Early check to avoid creating target */ |
3718d8ab | 2313 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) { |
761731b1 | 2314 | goto out; |
99a9addf SH |
2315 | } |
2316 | ||
2317 | flags = bs->open_flags | BDRV_O_RDWR; | |
2318 | ||
fc5d3f84 IM |
2319 | /* See if we have a backing HD we can use to create our new image |
2320 | * on top of. */ | |
2321 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
2322 | source = bs->backing_hd; | |
2323 | if (!source) { | |
2324 | sync = MIRROR_SYNC_MODE_FULL; | |
2325 | } | |
2326 | } | |
2327 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
2328 | source = bs; | |
2329 | } | |
2330 | ||
99a9addf SH |
2331 | size = bdrv_getlength(bs); |
2332 | if (size < 0) { | |
2333 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
761731b1 | 2334 | goto out; |
99a9addf SH |
2335 | } |
2336 | ||
2337 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
2338 | assert(format && drv); | |
fc5d3f84 IM |
2339 | if (source) { |
2340 | bdrv_img_create(target, format, source->filename, | |
2341 | source->drv->format_name, NULL, | |
2342 | size, flags, &local_err, false); | |
2343 | } else { | |
2344 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
2345 | size, flags, &local_err, false); | |
2346 | } | |
99a9addf SH |
2347 | } |
2348 | ||
84d18f06 | 2349 | if (local_err) { |
99a9addf | 2350 | error_propagate(errp, local_err); |
761731b1 | 2351 | goto out; |
99a9addf SH |
2352 | } |
2353 | ||
f67503e5 | 2354 | target_bs = NULL; |
ddf5636d | 2355 | ret = bdrv_open(&target_bs, target, NULL, NULL, flags, drv, &local_err); |
99a9addf | 2356 | if (ret < 0) { |
34b5d2c6 | 2357 | error_propagate(errp, local_err); |
761731b1 | 2358 | goto out; |
99a9addf SH |
2359 | } |
2360 | ||
761731b1 SH |
2361 | bdrv_set_aio_context(target_bs, aio_context); |
2362 | ||
fc5d3f84 | 2363 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
2364 | block_job_cb, bs, &local_err); |
2365 | if (local_err != NULL) { | |
4f6fd349 | 2366 | bdrv_unref(target_bs); |
99a9addf | 2367 | error_propagate(errp, local_err); |
761731b1 | 2368 | goto out; |
99a9addf | 2369 | } |
761731b1 SH |
2370 | |
2371 | out: | |
2372 | aio_context_release(aio_context); | |
99a9addf SH |
2373 | } |
2374 | ||
c13163fb BC |
2375 | BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp) |
2376 | { | |
2377 | return bdrv_named_nodes_list(); | |
2378 | } | |
2379 | ||
c29c1dd3 FZ |
2380 | void qmp_blockdev_backup(const char *device, const char *target, |
2381 | enum MirrorSyncMode sync, | |
2382 | bool has_speed, int64_t speed, | |
2383 | bool has_on_source_error, | |
2384 | BlockdevOnError on_source_error, | |
2385 | bool has_on_target_error, | |
2386 | BlockdevOnError on_target_error, | |
2387 | Error **errp) | |
2388 | { | |
2389 | BlockDriverState *bs; | |
2390 | BlockDriverState *target_bs; | |
2391 | Error *local_err = NULL; | |
2392 | AioContext *aio_context; | |
2393 | ||
2394 | if (!has_speed) { | |
2395 | speed = 0; | |
2396 | } | |
2397 | if (!has_on_source_error) { | |
2398 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2399 | } | |
2400 | if (!has_on_target_error) { | |
2401 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2402 | } | |
2403 | ||
2404 | bs = bdrv_find(device); | |
2405 | if (!bs) { | |
2406 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2407 | return; | |
2408 | } | |
2409 | ||
2410 | aio_context = bdrv_get_aio_context(bs); | |
2411 | aio_context_acquire(aio_context); | |
2412 | ||
2413 | target_bs = bdrv_find(target); | |
2414 | if (!target_bs) { | |
2415 | error_set(errp, QERR_DEVICE_NOT_FOUND, target); | |
2416 | goto out; | |
2417 | } | |
2418 | ||
2419 | bdrv_ref(target_bs); | |
2420 | bdrv_set_aio_context(target_bs, aio_context); | |
2421 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, | |
2422 | block_job_cb, bs, &local_err); | |
2423 | if (local_err != NULL) { | |
2424 | bdrv_unref(target_bs); | |
2425 | error_propagate(errp, local_err); | |
2426 | } | |
2427 | out: | |
2428 | aio_context_release(aio_context); | |
2429 | } | |
2430 | ||
08e4ed6c PB |
2431 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
2432 | ||
d9b902db PB |
2433 | void qmp_drive_mirror(const char *device, const char *target, |
2434 | bool has_format, const char *format, | |
4c828dc6 | 2435 | bool has_node_name, const char *node_name, |
09158f00 | 2436 | bool has_replaces, const char *replaces, |
d9b902db PB |
2437 | enum MirrorSyncMode sync, |
2438 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 2439 | bool has_speed, int64_t speed, |
eee13dfe | 2440 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 2441 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
2442 | bool has_on_source_error, BlockdevOnError on_source_error, |
2443 | bool has_on_target_error, BlockdevOnError on_target_error, | |
2444 | Error **errp) | |
d9b902db | 2445 | { |
d9b902db PB |
2446 | BlockDriverState *bs; |
2447 | BlockDriverState *source, *target_bs; | |
5a7e7a0b | 2448 | AioContext *aio_context; |
d9b902db PB |
2449 | BlockDriver *drv = NULL; |
2450 | Error *local_err = NULL; | |
4c828dc6 | 2451 | QDict *options = NULL; |
d9b902db | 2452 | int flags; |
ac3c5d83 | 2453 | int64_t size; |
d9b902db PB |
2454 | int ret; |
2455 | ||
2456 | if (!has_speed) { | |
2457 | speed = 0; | |
2458 | } | |
b952b558 PB |
2459 | if (!has_on_source_error) { |
2460 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
2461 | } | |
2462 | if (!has_on_target_error) { | |
2463 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
2464 | } | |
d9b902db PB |
2465 | if (!has_mode) { |
2466 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
2467 | } | |
eee13dfe PB |
2468 | if (!has_granularity) { |
2469 | granularity = 0; | |
2470 | } | |
08e4ed6c PB |
2471 | if (!has_buf_size) { |
2472 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
2473 | } | |
2474 | ||
eee13dfe | 2475 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
3cbbe9fd SH |
2476 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", |
2477 | "a value in range [512B, 64MB]"); | |
eee13dfe PB |
2478 | return; |
2479 | } | |
2480 | if (granularity & (granularity - 1)) { | |
3cbbe9fd | 2481 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "granularity", "power of 2"); |
eee13dfe PB |
2482 | return; |
2483 | } | |
d9b902db PB |
2484 | |
2485 | bs = bdrv_find(device); | |
2486 | if (!bs) { | |
2487 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2488 | return; | |
2489 | } | |
2490 | ||
5a7e7a0b SH |
2491 | aio_context = bdrv_get_aio_context(bs); |
2492 | aio_context_acquire(aio_context); | |
2493 | ||
d9b902db PB |
2494 | if (!bdrv_is_inserted(bs)) { |
2495 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
5a7e7a0b | 2496 | goto out; |
d9b902db PB |
2497 | } |
2498 | ||
2499 | if (!has_format) { | |
2500 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
2501 | } | |
2502 | if (format) { | |
2503 | drv = bdrv_find_format(format); | |
2504 | if (!drv) { | |
2505 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
5a7e7a0b | 2506 | goto out; |
d9b902db PB |
2507 | } |
2508 | } | |
2509 | ||
3718d8ab | 2510 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) { |
5a7e7a0b | 2511 | goto out; |
d9b902db PB |
2512 | } |
2513 | ||
2514 | flags = bs->open_flags | BDRV_O_RDWR; | |
2515 | source = bs->backing_hd; | |
2516 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
2517 | sync = MIRROR_SYNC_MODE_FULL; | |
2518 | } | |
117e0c82 HR |
2519 | if (sync == MIRROR_SYNC_MODE_NONE) { |
2520 | source = bs; | |
2521 | } | |
d9b902db | 2522 | |
ac3c5d83 SH |
2523 | size = bdrv_getlength(bs); |
2524 | if (size < 0) { | |
2525 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
5a7e7a0b | 2526 | goto out; |
ac3c5d83 SH |
2527 | } |
2528 | ||
09158f00 BC |
2529 | if (has_replaces) { |
2530 | BlockDriverState *to_replace_bs; | |
5a7e7a0b SH |
2531 | AioContext *replace_aio_context; |
2532 | int64_t replace_size; | |
09158f00 BC |
2533 | |
2534 | if (!has_node_name) { | |
2535 | error_setg(errp, "a node-name must be provided when replacing a" | |
2536 | " named node of the graph"); | |
5a7e7a0b | 2537 | goto out; |
09158f00 BC |
2538 | } |
2539 | ||
2540 | to_replace_bs = check_to_replace_node(replaces, &local_err); | |
2541 | ||
2542 | if (!to_replace_bs) { | |
2543 | error_propagate(errp, local_err); | |
5a7e7a0b | 2544 | goto out; |
09158f00 BC |
2545 | } |
2546 | ||
5a7e7a0b SH |
2547 | replace_aio_context = bdrv_get_aio_context(to_replace_bs); |
2548 | aio_context_acquire(replace_aio_context); | |
2549 | replace_size = bdrv_getlength(to_replace_bs); | |
2550 | aio_context_release(replace_aio_context); | |
2551 | ||
2552 | if (size != replace_size) { | |
09158f00 BC |
2553 | error_setg(errp, "cannot replace image with a mirror image of " |
2554 | "different size"); | |
5a7e7a0b | 2555 | goto out; |
09158f00 BC |
2556 | } |
2557 | } | |
2558 | ||
14526864 HR |
2559 | if ((sync == MIRROR_SYNC_MODE_FULL || !source) |
2560 | && mode != NEW_IMAGE_MODE_EXISTING) | |
2561 | { | |
d9b902db PB |
2562 | /* create new image w/o backing file */ |
2563 | assert(format && drv); | |
cf8f2426 | 2564 | bdrv_img_create(target, format, |
f382d43a | 2565 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
2566 | } else { |
2567 | switch (mode) { | |
2568 | case NEW_IMAGE_MODE_EXISTING: | |
d9b902db PB |
2569 | break; |
2570 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
2571 | /* create new image with backing file */ | |
cf8f2426 LC |
2572 | bdrv_img_create(target, format, |
2573 | source->filename, | |
2574 | source->drv->format_name, | |
f382d43a | 2575 | NULL, size, flags, &local_err, false); |
d9b902db PB |
2576 | break; |
2577 | default: | |
2578 | abort(); | |
2579 | } | |
2580 | } | |
2581 | ||
84d18f06 | 2582 | if (local_err) { |
cf8f2426 | 2583 | error_propagate(errp, local_err); |
5a7e7a0b | 2584 | goto out; |
d9b902db PB |
2585 | } |
2586 | ||
4c828dc6 BC |
2587 | if (has_node_name) { |
2588 | options = qdict_new(); | |
2589 | qdict_put(options, "node-name", qstring_from_str(node_name)); | |
2590 | } | |
2591 | ||
b812f671 PB |
2592 | /* Mirroring takes care of copy-on-write using the source's backing |
2593 | * file. | |
2594 | */ | |
f67503e5 | 2595 | target_bs = NULL; |
4c828dc6 BC |
2596 | ret = bdrv_open(&target_bs, target, NULL, options, |
2597 | flags | BDRV_O_NO_BACKING, drv, &local_err); | |
d9b902db | 2598 | if (ret < 0) { |
34b5d2c6 | 2599 | error_propagate(errp, local_err); |
5a7e7a0b | 2600 | goto out; |
d9b902db PB |
2601 | } |
2602 | ||
5a7e7a0b SH |
2603 | bdrv_set_aio_context(target_bs, aio_context); |
2604 | ||
09158f00 BC |
2605 | /* pass the node name to replace to mirror start since it's loose coupling |
2606 | * and will allow to check whether the node still exist at mirror completion | |
2607 | */ | |
2608 | mirror_start(bs, target_bs, | |
2609 | has_replaces ? replaces : NULL, | |
2610 | speed, granularity, buf_size, sync, | |
eee13dfe | 2611 | on_source_error, on_target_error, |
b952b558 | 2612 | block_job_cb, bs, &local_err); |
d9b902db | 2613 | if (local_err != NULL) { |
4f6fd349 | 2614 | bdrv_unref(target_bs); |
d9b902db | 2615 | error_propagate(errp, local_err); |
5a7e7a0b | 2616 | goto out; |
d9b902db | 2617 | } |
5a7e7a0b SH |
2618 | |
2619 | out: | |
2620 | aio_context_release(aio_context); | |
d9b902db PB |
2621 | } |
2622 | ||
3d948cdf | 2623 | /* Get the block job for a given device name and acquire its AioContext */ |
24d6bffe MA |
2624 | static BlockJob *find_block_job(const char *device, AioContext **aio_context, |
2625 | Error **errp) | |
2d47c6e9 SH |
2626 | { |
2627 | BlockDriverState *bs; | |
2628 | ||
2629 | bs = bdrv_find(device); | |
3d948cdf SH |
2630 | if (!bs) { |
2631 | goto notfound; | |
2632 | } | |
2633 | ||
2634 | *aio_context = bdrv_get_aio_context(bs); | |
2635 | aio_context_acquire(*aio_context); | |
2636 | ||
2637 | if (!bs->job) { | |
2638 | aio_context_release(*aio_context); | |
2639 | goto notfound; | |
2d47c6e9 | 2640 | } |
3d948cdf | 2641 | |
2d47c6e9 | 2642 | return bs->job; |
3d948cdf SH |
2643 | |
2644 | notfound: | |
2e3a0266 MA |
2645 | error_set(errp, ERROR_CLASS_DEVICE_NOT_ACTIVE, |
2646 | "No active block job on device '%s'", device); | |
3d948cdf SH |
2647 | *aio_context = NULL; |
2648 | return NULL; | |
2d47c6e9 SH |
2649 | } |
2650 | ||
882ec7ce | 2651 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 | 2652 | { |
3d948cdf | 2653 | AioContext *aio_context; |
24d6bffe | 2654 | BlockJob *job = find_block_job(device, &aio_context, errp); |
2d47c6e9 SH |
2655 | |
2656 | if (!job) { | |
2d47c6e9 SH |
2657 | return; |
2658 | } | |
2659 | ||
882ec7ce | 2660 | block_job_set_speed(job, speed, errp); |
3d948cdf | 2661 | aio_context_release(aio_context); |
2d47c6e9 | 2662 | } |
370521a1 | 2663 | |
6e37fb81 PB |
2664 | void qmp_block_job_cancel(const char *device, |
2665 | bool has_force, bool force, Error **errp) | |
370521a1 | 2666 | { |
3d948cdf | 2667 | AioContext *aio_context; |
24d6bffe | 2668 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 | 2669 | |
370521a1 | 2670 | if (!job) { |
370521a1 SH |
2671 | return; |
2672 | } | |
3d948cdf SH |
2673 | |
2674 | if (!has_force) { | |
2675 | force = false; | |
2676 | } | |
2677 | ||
6e37fb81 | 2678 | if (job->paused && !force) { |
f231b88d CR |
2679 | error_setg(errp, "The block job for device '%s' is currently paused", |
2680 | device); | |
3d948cdf | 2681 | goto out; |
8acc72a4 | 2682 | } |
370521a1 SH |
2683 | |
2684 | trace_qmp_block_job_cancel(job); | |
2685 | block_job_cancel(job); | |
3d948cdf SH |
2686 | out: |
2687 | aio_context_release(aio_context); | |
370521a1 | 2688 | } |
fb5458cd | 2689 | |
6e37fb81 PB |
2690 | void qmp_block_job_pause(const char *device, Error **errp) |
2691 | { | |
3d948cdf | 2692 | AioContext *aio_context; |
24d6bffe | 2693 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 PB |
2694 | |
2695 | if (!job) { | |
6e37fb81 PB |
2696 | return; |
2697 | } | |
2698 | ||
2699 | trace_qmp_block_job_pause(job); | |
2700 | block_job_pause(job); | |
3d948cdf | 2701 | aio_context_release(aio_context); |
6e37fb81 PB |
2702 | } |
2703 | ||
2704 | void qmp_block_job_resume(const char *device, Error **errp) | |
2705 | { | |
3d948cdf | 2706 | AioContext *aio_context; |
24d6bffe | 2707 | BlockJob *job = find_block_job(device, &aio_context, errp); |
6e37fb81 PB |
2708 | |
2709 | if (!job) { | |
6e37fb81 PB |
2710 | return; |
2711 | } | |
2712 | ||
2713 | trace_qmp_block_job_resume(job); | |
2714 | block_job_resume(job); | |
3d948cdf | 2715 | aio_context_release(aio_context); |
6e37fb81 PB |
2716 | } |
2717 | ||
aeae883b PB |
2718 | void qmp_block_job_complete(const char *device, Error **errp) |
2719 | { | |
3d948cdf | 2720 | AioContext *aio_context; |
24d6bffe | 2721 | BlockJob *job = find_block_job(device, &aio_context, errp); |
aeae883b PB |
2722 | |
2723 | if (!job) { | |
aeae883b PB |
2724 | return; |
2725 | } | |
2726 | ||
2727 | trace_qmp_block_job_complete(job); | |
2728 | block_job_complete(job, errp); | |
3d948cdf | 2729 | aio_context_release(aio_context); |
aeae883b PB |
2730 | } |
2731 | ||
fa40e656 JC |
2732 | void qmp_change_backing_file(const char *device, |
2733 | const char *image_node_name, | |
2734 | const char *backing_file, | |
2735 | Error **errp) | |
2736 | { | |
2737 | BlockDriverState *bs = NULL; | |
729962f6 | 2738 | AioContext *aio_context; |
fa40e656 JC |
2739 | BlockDriverState *image_bs = NULL; |
2740 | Error *local_err = NULL; | |
2741 | bool ro; | |
2742 | int open_flags; | |
2743 | int ret; | |
2744 | ||
2745 | /* find the top layer BDS of the chain */ | |
2746 | bs = bdrv_find(device); | |
2747 | if (!bs) { | |
2748 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
2749 | return; | |
2750 | } | |
2751 | ||
729962f6 SH |
2752 | aio_context = bdrv_get_aio_context(bs); |
2753 | aio_context_acquire(aio_context); | |
2754 | ||
fa40e656 JC |
2755 | image_bs = bdrv_lookup_bs(NULL, image_node_name, &local_err); |
2756 | if (local_err) { | |
2757 | error_propagate(errp, local_err); | |
729962f6 | 2758 | goto out; |
fa40e656 JC |
2759 | } |
2760 | ||
2761 | if (!image_bs) { | |
2762 | error_setg(errp, "image file not found"); | |
729962f6 | 2763 | goto out; |
fa40e656 JC |
2764 | } |
2765 | ||
2766 | if (bdrv_find_base(image_bs) == image_bs) { | |
2767 | error_setg(errp, "not allowing backing file change on an image " | |
2768 | "without a backing file"); | |
729962f6 | 2769 | goto out; |
fa40e656 JC |
2770 | } |
2771 | ||
2772 | /* even though we are not necessarily operating on bs, we need it to | |
2773 | * determine if block ops are currently prohibited on the chain */ | |
2774 | if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_CHANGE, errp)) { | |
729962f6 | 2775 | goto out; |
fa40e656 JC |
2776 | } |
2777 | ||
2778 | /* final sanity check */ | |
2779 | if (!bdrv_chain_contains(bs, image_bs)) { | |
2780 | error_setg(errp, "'%s' and image file are not in the same chain", | |
2781 | device); | |
729962f6 | 2782 | goto out; |
fa40e656 JC |
2783 | } |
2784 | ||
2785 | /* if not r/w, reopen to make r/w */ | |
2786 | open_flags = image_bs->open_flags; | |
2787 | ro = bdrv_is_read_only(image_bs); | |
2788 | ||
2789 | if (ro) { | |
2790 | bdrv_reopen(image_bs, open_flags | BDRV_O_RDWR, &local_err); | |
2791 | if (local_err) { | |
2792 | error_propagate(errp, local_err); | |
729962f6 | 2793 | goto out; |
fa40e656 JC |
2794 | } |
2795 | } | |
2796 | ||
2797 | ret = bdrv_change_backing_file(image_bs, backing_file, | |
2798 | image_bs->drv ? image_bs->drv->format_name : ""); | |
2799 | ||
2800 | if (ret < 0) { | |
2801 | error_setg_errno(errp, -ret, "Could not change backing file to '%s'", | |
2802 | backing_file); | |
2803 | /* don't exit here, so we can try to restore open flags if | |
2804 | * appropriate */ | |
2805 | } | |
2806 | ||
2807 | if (ro) { | |
2808 | bdrv_reopen(image_bs, open_flags, &local_err); | |
2809 | if (local_err) { | |
2810 | error_propagate(errp, local_err); /* will preserve prior errp */ | |
2811 | } | |
2812 | } | |
729962f6 SH |
2813 | |
2814 | out: | |
2815 | aio_context_release(aio_context); | |
fa40e656 JC |
2816 | } |
2817 | ||
d26c9a15 KW |
2818 | void qmp_blockdev_add(BlockdevOptions *options, Error **errp) |
2819 | { | |
2820 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
18e46a03 | 2821 | BlockBackend *blk; |
d26c9a15 KW |
2822 | QObject *obj; |
2823 | QDict *qdict; | |
d26c9a15 KW |
2824 | Error *local_err = NULL; |
2825 | ||
2826 | /* Require an ID in the top level */ | |
2827 | if (!options->has_id) { | |
2828 | error_setg(errp, "Block device needs an ID"); | |
2829 | goto fail; | |
2830 | } | |
2831 | ||
60e19e06 | 2832 | /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with |
d26c9a15 | 2833 | * cache.direct=false instead of silently switching to aio=threads, except |
60e19e06 | 2834 | * when called from drive_new(). |
d26c9a15 KW |
2835 | * |
2836 | * For now, simply forbidding the combination for all drivers will do. */ | |
2837 | if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) { | |
c6e0bd9b KW |
2838 | bool direct = options->has_cache && |
2839 | options->cache->has_direct && | |
2840 | options->cache->direct; | |
2841 | if (!direct) { | |
d26c9a15 KW |
2842 | error_setg(errp, "aio=native requires cache.direct=true"); |
2843 | goto fail; | |
2844 | } | |
2845 | } | |
2846 | ||
2847 | visit_type_BlockdevOptions(qmp_output_get_visitor(ov), | |
2848 | &options, NULL, &local_err); | |
84d18f06 | 2849 | if (local_err) { |
d26c9a15 KW |
2850 | error_propagate(errp, local_err); |
2851 | goto fail; | |
2852 | } | |
2853 | ||
2854 | obj = qmp_output_get_qobject(ov); | |
2855 | qdict = qobject_to_qdict(obj); | |
2856 | ||
2857 | qdict_flatten(qdict); | |
2858 | ||
18e46a03 | 2859 | blk = blockdev_init(NULL, qdict, &local_err); |
84d18f06 | 2860 | if (local_err) { |
b681072d | 2861 | error_propagate(errp, local_err); |
d26c9a15 KW |
2862 | goto fail; |
2863 | } | |
2864 | ||
18e46a03 | 2865 | if (bdrv_key_required(blk_bs(blk))) { |
18e46a03 | 2866 | blk_unref(blk); |
8ae8e904 KW |
2867 | error_setg(errp, "blockdev-add doesn't support encrypted devices"); |
2868 | goto fail; | |
2869 | } | |
2870 | ||
d26c9a15 KW |
2871 | fail: |
2872 | qmp_output_visitor_cleanup(ov); | |
2873 | } | |
2874 | ||
fea68bb6 | 2875 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
fb5458cd | 2876 | { |
fea68bb6 MA |
2877 | BlockJobInfoList *head = NULL, **p_next = &head; |
2878 | BlockDriverState *bs; | |
fb5458cd | 2879 | |
fea68bb6 | 2880 | for (bs = bdrv_next(NULL); bs; bs = bdrv_next(bs)) { |
69691e72 SH |
2881 | AioContext *aio_context = bdrv_get_aio_context(bs); |
2882 | ||
2883 | aio_context_acquire(aio_context); | |
2884 | ||
fea68bb6 MA |
2885 | if (bs->job) { |
2886 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); | |
2887 | elem->value = block_job_query(bs->job); | |
2888 | *p_next = elem; | |
2889 | p_next = &elem->next; | |
2890 | } | |
69691e72 SH |
2891 | |
2892 | aio_context_release(aio_context); | |
fb5458cd | 2893 | } |
fb5458cd | 2894 | |
fea68bb6 | 2895 | return head; |
fb5458cd | 2896 | } |
4d454574 | 2897 | |
0006383e | 2898 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 2899 | .name = "drive", |
0006383e | 2900 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
2901 | .desc = { |
2902 | { | |
4d454574 PB |
2903 | .name = "snapshot", |
2904 | .type = QEMU_OPT_BOOL, | |
2905 | .help = "enable/disable snapshot mode", | |
a9384aff PB |
2906 | },{ |
2907 | .name = "discard", | |
2908 | .type = QEMU_OPT_STRING, | |
2909 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 2910 | },{ |
29c4e2b5 KW |
2911 | .name = "cache.writeback", |
2912 | .type = QEMU_OPT_BOOL, | |
2913 | .help = "enables writeback mode for any caches", | |
2914 | },{ | |
2915 | .name = "cache.direct", | |
2916 | .type = QEMU_OPT_BOOL, | |
2917 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
2918 | },{ | |
2919 | .name = "cache.no-flush", | |
2920 | .type = QEMU_OPT_BOOL, | |
2921 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
2922 | },{ |
2923 | .name = "aio", | |
2924 | .type = QEMU_OPT_STRING, | |
2925 | .help = "host AIO implementation (threads, native)", | |
2926 | },{ | |
2927 | .name = "format", | |
2928 | .type = QEMU_OPT_STRING, | |
2929 | .help = "disk format (raw, qcow2, ...)", | |
4d454574 PB |
2930 | },{ |
2931 | .name = "rerror", | |
2932 | .type = QEMU_OPT_STRING, | |
2933 | .help = "read error action", | |
2934 | },{ | |
2935 | .name = "werror", | |
2936 | .type = QEMU_OPT_STRING, | |
2937 | .help = "write error action", | |
4d454574 | 2938 | },{ |
0f227a94 | 2939 | .name = "read-only", |
4d454574 PB |
2940 | .type = QEMU_OPT_BOOL, |
2941 | .help = "open drive file as read-only", | |
2942 | },{ | |
57975222 | 2943 | .name = "throttling.iops-total", |
4d454574 PB |
2944 | .type = QEMU_OPT_NUMBER, |
2945 | .help = "limit total I/O operations per second", | |
2946 | },{ | |
57975222 | 2947 | .name = "throttling.iops-read", |
4d454574 PB |
2948 | .type = QEMU_OPT_NUMBER, |
2949 | .help = "limit read operations per second", | |
2950 | },{ | |
57975222 | 2951 | .name = "throttling.iops-write", |
4d454574 PB |
2952 | .type = QEMU_OPT_NUMBER, |
2953 | .help = "limit write operations per second", | |
2954 | },{ | |
57975222 | 2955 | .name = "throttling.bps-total", |
4d454574 PB |
2956 | .type = QEMU_OPT_NUMBER, |
2957 | .help = "limit total bytes per second", | |
2958 | },{ | |
57975222 | 2959 | .name = "throttling.bps-read", |
4d454574 PB |
2960 | .type = QEMU_OPT_NUMBER, |
2961 | .help = "limit read bytes per second", | |
2962 | },{ | |
57975222 | 2963 | .name = "throttling.bps-write", |
4d454574 PB |
2964 | .type = QEMU_OPT_NUMBER, |
2965 | .help = "limit write bytes per second", | |
3e9fab69 BC |
2966 | },{ |
2967 | .name = "throttling.iops-total-max", | |
2968 | .type = QEMU_OPT_NUMBER, | |
2969 | .help = "I/O operations burst", | |
2970 | },{ | |
2971 | .name = "throttling.iops-read-max", | |
2972 | .type = QEMU_OPT_NUMBER, | |
2973 | .help = "I/O operations read burst", | |
2974 | },{ | |
2975 | .name = "throttling.iops-write-max", | |
2976 | .type = QEMU_OPT_NUMBER, | |
2977 | .help = "I/O operations write burst", | |
2978 | },{ | |
2979 | .name = "throttling.bps-total-max", | |
2980 | .type = QEMU_OPT_NUMBER, | |
2981 | .help = "total bytes burst", | |
2982 | },{ | |
2983 | .name = "throttling.bps-read-max", | |
2984 | .type = QEMU_OPT_NUMBER, | |
2985 | .help = "total bytes read burst", | |
2986 | },{ | |
2987 | .name = "throttling.bps-write-max", | |
2988 | .type = QEMU_OPT_NUMBER, | |
2989 | .help = "total bytes write burst", | |
2024c1df BC |
2990 | },{ |
2991 | .name = "throttling.iops-size", | |
2992 | .type = QEMU_OPT_NUMBER, | |
2993 | .help = "when limiting by iops max size of an I/O in bytes", | |
4d454574 PB |
2994 | },{ |
2995 | .name = "copy-on-read", | |
2996 | .type = QEMU_OPT_BOOL, | |
2997 | .help = "copy read data from backing file into image file", | |
465bee1d PL |
2998 | },{ |
2999 | .name = "detect-zeroes", | |
3000 | .type = QEMU_OPT_STRING, | |
3001 | .help = "try to optimize zero writes (off, on, unmap)", | |
4d454574 PB |
3002 | }, |
3003 | { /* end of list */ } | |
3004 | }, | |
3005 | }; | |
0006383e KW |
3006 | |
3007 | QemuOptsList qemu_drive_opts = { | |
3008 | .name = "drive", | |
3009 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
3010 | .desc = { | |
492fdc6f KW |
3011 | /* |
3012 | * no elements => accept any params | |
3013 | * validation will happen later | |
3014 | */ | |
0006383e KW |
3015 | { /* end of list */ } |
3016 | }, | |
3017 | }; |