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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 | ||
9c17d615 | 33 | #include "sysemu/blockdev.h" |
0d09e41a | 34 | #include "hw/block/block.h" |
737e150e | 35 | #include "block/blockjob.h" |
83c9089e | 36 | #include "monitor/monitor.h" |
7b1b5d19 | 37 | #include "qapi/qmp/qerror.h" |
1de7afc9 PB |
38 | #include "qemu/option.h" |
39 | #include "qemu/config-file.h" | |
7b1b5d19 | 40 | #include "qapi/qmp/types.h" |
9c17d615 | 41 | #include "sysemu/sysemu.h" |
737e150e | 42 | #include "block/block_int.h" |
a4dea8a9 | 43 | #include "qmp-commands.h" |
12bd451f | 44 | #include "trace.h" |
9c17d615 | 45 | #include "sysemu/arch_init.h" |
666daa68 | 46 | |
c9b62a7e | 47 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
0006383e | 48 | extern QemuOptsList qemu_common_drive_opts; |
8afaefb8 | 49 | extern QemuOptsList qemu_old_drive_opts; |
666daa68 | 50 | |
1960966d MA |
51 | static const char *const if_name[IF_COUNT] = { |
52 | [IF_NONE] = "none", | |
53 | [IF_IDE] = "ide", | |
54 | [IF_SCSI] = "scsi", | |
55 | [IF_FLOPPY] = "floppy", | |
56 | [IF_PFLASH] = "pflash", | |
57 | [IF_MTD] = "mtd", | |
58 | [IF_SD] = "sd", | |
59 | [IF_VIRTIO] = "virtio", | |
60 | [IF_XEN] = "xen", | |
61 | }; | |
62 | ||
63 | static const int if_max_devs[IF_COUNT] = { | |
27d6bf40 MA |
64 | /* |
65 | * Do not change these numbers! They govern how drive option | |
66 | * index maps to unit and bus. That mapping is ABI. | |
67 | * | |
68 | * All controllers used to imlement if=T drives need to support | |
69 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
70 | * Otherwise, some index values map to "impossible" bus, unit | |
71 | * values. | |
72 | * | |
73 | * For instance, if you change [IF_SCSI] to 255, -drive | |
74 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
75 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
76 | * the drive can't be set up. Regression. | |
77 | */ | |
78 | [IF_IDE] = 2, | |
79 | [IF_SCSI] = 7, | |
1960966d MA |
80 | }; |
81 | ||
14bafc54 MA |
82 | /* |
83 | * We automatically delete the drive when a device using it gets | |
84 | * unplugged. Questionable feature, but we can't just drop it. | |
85 | * Device models call blockdev_mark_auto_del() to schedule the | |
86 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
87 | * when deletion is actually safe. | |
88 | */ | |
89 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
90 | { | |
91 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
92 | ||
12bde0ee PB |
93 | if (bs->job) { |
94 | block_job_cancel(bs->job); | |
95 | } | |
0fc0f1fa RH |
96 | if (dinfo) { |
97 | dinfo->auto_del = 1; | |
98 | } | |
14bafc54 MA |
99 | } |
100 | ||
101 | void blockdev_auto_del(BlockDriverState *bs) | |
102 | { | |
103 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
104 | ||
0fc0f1fa | 105 | if (dinfo && dinfo->auto_del) { |
84fb3925 | 106 | drive_put_ref(dinfo); |
14bafc54 MA |
107 | } |
108 | } | |
109 | ||
505a7fb1 MA |
110 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
111 | { | |
112 | int max_devs = if_max_devs[type]; | |
113 | return max_devs ? index / max_devs : 0; | |
114 | } | |
115 | ||
116 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
117 | { | |
118 | int max_devs = if_max_devs[type]; | |
119 | return max_devs ? index % max_devs : index; | |
120 | } | |
121 | ||
2292ddae MA |
122 | QemuOpts *drive_def(const char *optstr) |
123 | { | |
124 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
125 | } | |
126 | ||
127 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 128 | const char *optstr) |
666daa68 | 129 | { |
666daa68 | 130 | QemuOpts *opts; |
2292ddae | 131 | char buf[32]; |
666daa68 | 132 | |
2292ddae | 133 | opts = drive_def(optstr); |
666daa68 MA |
134 | if (!opts) { |
135 | return NULL; | |
136 | } | |
2292ddae MA |
137 | if (type != IF_DEFAULT) { |
138 | qemu_opt_set(opts, "if", if_name[type]); | |
139 | } | |
140 | if (index >= 0) { | |
141 | snprintf(buf, sizeof(buf), "%d", index); | |
142 | qemu_opt_set(opts, "index", buf); | |
143 | } | |
666daa68 MA |
144 | if (file) |
145 | qemu_opt_set(opts, "file", file); | |
146 | return opts; | |
147 | } | |
148 | ||
149 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
150 | { | |
151 | DriveInfo *dinfo; | |
152 | ||
153 | /* seek interface, bus and unit */ | |
154 | ||
155 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
156 | if (dinfo->type == type && | |
157 | dinfo->bus == bus && | |
158 | dinfo->unit == unit) | |
159 | return dinfo; | |
160 | } | |
161 | ||
162 | return NULL; | |
163 | } | |
164 | ||
f1bd51ac MA |
165 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
166 | { | |
167 | return drive_get(type, | |
168 | drive_index_to_bus_id(type, index), | |
169 | drive_index_to_unit_id(type, index)); | |
170 | } | |
171 | ||
666daa68 MA |
172 | int drive_get_max_bus(BlockInterfaceType type) |
173 | { | |
174 | int max_bus; | |
175 | DriveInfo *dinfo; | |
176 | ||
177 | max_bus = -1; | |
178 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
179 | if(dinfo->type == type && | |
180 | dinfo->bus > max_bus) | |
181 | max_bus = dinfo->bus; | |
182 | } | |
183 | return max_bus; | |
184 | } | |
185 | ||
13839974 MA |
186 | /* Get a block device. This should only be used for single-drive devices |
187 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
188 | appropriate bus. */ | |
189 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
190 | { | |
191 | static int next_block_unit[IF_COUNT]; | |
192 | ||
193 | return drive_get(type, 0, next_block_unit[type]++); | |
194 | } | |
195 | ||
e4700e59 | 196 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
197 | { |
198 | DriveInfo *dinfo; | |
199 | ||
200 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
201 | if (dinfo->bdrv == bs) { |
202 | return dinfo; | |
203 | } | |
666daa68 | 204 | } |
e4700e59 | 205 | return NULL; |
666daa68 MA |
206 | } |
207 | ||
666daa68 MA |
208 | static void bdrv_format_print(void *opaque, const char *name) |
209 | { | |
807105a7 | 210 | error_printf(" %s", name); |
666daa68 MA |
211 | } |
212 | ||
84fb3925 | 213 | static void drive_uninit(DriveInfo *dinfo) |
666daa68 MA |
214 | { |
215 | qemu_opts_del(dinfo->opts); | |
216 | bdrv_delete(dinfo->bdrv); | |
7267c094 | 217 | g_free(dinfo->id); |
666daa68 | 218 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 219 | g_free(dinfo->serial); |
7267c094 | 220 | g_free(dinfo); |
666daa68 MA |
221 | } |
222 | ||
84fb3925 MT |
223 | void drive_put_ref(DriveInfo *dinfo) |
224 | { | |
225 | assert(dinfo->refcount); | |
226 | if (--dinfo->refcount == 0) { | |
227 | drive_uninit(dinfo); | |
228 | } | |
229 | } | |
230 | ||
231 | void drive_get_ref(DriveInfo *dinfo) | |
232 | { | |
233 | dinfo->refcount++; | |
234 | } | |
235 | ||
aa398a5c SH |
236 | typedef struct { |
237 | QEMUBH *bh; | |
238 | DriveInfo *dinfo; | |
239 | } DrivePutRefBH; | |
240 | ||
241 | static void drive_put_ref_bh(void *opaque) | |
242 | { | |
243 | DrivePutRefBH *s = opaque; | |
244 | ||
245 | drive_put_ref(s->dinfo); | |
246 | qemu_bh_delete(s->bh); | |
247 | g_free(s); | |
248 | } | |
249 | ||
250 | /* | |
251 | * Release a drive reference in a BH | |
252 | * | |
253 | * It is not possible to use drive_put_ref() from a callback function when the | |
254 | * callers still need the drive. In such cases we schedule a BH to release the | |
255 | * reference. | |
256 | */ | |
257 | static void drive_put_ref_bh_schedule(DriveInfo *dinfo) | |
258 | { | |
259 | DrivePutRefBH *s; | |
260 | ||
261 | s = g_new(DrivePutRefBH, 1); | |
262 | s->bh = qemu_bh_new(drive_put_ref_bh, s); | |
263 | s->dinfo = dinfo; | |
264 | qemu_bh_schedule(s->bh); | |
265 | } | |
266 | ||
1ceee0d5 | 267 | static int parse_block_error_action(const char *buf, bool is_read) |
666daa68 MA |
268 | { |
269 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 270 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 271 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 272 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 273 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 274 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 275 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 276 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 277 | } else { |
807105a7 MA |
278 | error_report("'%s' invalid %s error action", |
279 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
280 | return -1; |
281 | } | |
282 | } | |
283 | ||
c546194f | 284 | static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp) |
0563e191 ZYW |
285 | { |
286 | bool bps_flag; | |
287 | bool iops_flag; | |
288 | ||
289 | assert(io_limits); | |
290 | ||
291 | bps_flag = (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] != 0) | |
292 | && ((io_limits->bps[BLOCK_IO_LIMIT_READ] != 0) | |
293 | || (io_limits->bps[BLOCK_IO_LIMIT_WRITE] != 0)); | |
294 | iops_flag = (io_limits->iops[BLOCK_IO_LIMIT_TOTAL] != 0) | |
295 | && ((io_limits->iops[BLOCK_IO_LIMIT_READ] != 0) | |
296 | || (io_limits->iops[BLOCK_IO_LIMIT_WRITE] != 0)); | |
297 | if (bps_flag || iops_flag) { | |
c546194f SH |
298 | error_setg(errp, "bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) " |
299 | "cannot be used at the same time"); | |
0563e191 ZYW |
300 | return false; |
301 | } | |
302 | ||
7d81c141 SH |
303 | if (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] < 0 || |
304 | io_limits->bps[BLOCK_IO_LIMIT_WRITE] < 0 || | |
305 | io_limits->bps[BLOCK_IO_LIMIT_READ] < 0 || | |
306 | io_limits->iops[BLOCK_IO_LIMIT_TOTAL] < 0 || | |
307 | io_limits->iops[BLOCK_IO_LIMIT_WRITE] < 0 || | |
308 | io_limits->iops[BLOCK_IO_LIMIT_READ] < 0) { | |
309 | error_setg(errp, "bps and iops values must be 0 or greater"); | |
310 | return false; | |
311 | } | |
312 | ||
0563e191 ZYW |
313 | return true; |
314 | } | |
315 | ||
57975222 KW |
316 | static DriveInfo *blockdev_init(QemuOpts *all_opts, |
317 | BlockInterfaceType block_default_type) | |
666daa68 MA |
318 | { |
319 | const char *buf; | |
320 | const char *file = NULL; | |
666daa68 MA |
321 | const char *serial; |
322 | const char *mediastr = ""; | |
323 | BlockInterfaceType type; | |
324 | enum { MEDIA_DISK, MEDIA_CDROM } media; | |
325 | int bus_id, unit_id; | |
326 | int cyls, heads, secs, translation; | |
666daa68 MA |
327 | int max_devs; |
328 | int index; | |
329 | int ro = 0; | |
330 | int bdrv_flags = 0; | |
331 | int on_read_error, on_write_error; | |
332 | const char *devaddr; | |
333 | DriveInfo *dinfo; | |
0563e191 | 334 | BlockIOLimit io_limits; |
666daa68 | 335 | int snapshot = 0; |
fb0490f6 | 336 | bool copy_on_read; |
666daa68 | 337 | int ret; |
c546194f | 338 | Error *error = NULL; |
0006383e KW |
339 | QemuOpts *opts; |
340 | QDict *bs_opts; | |
341 | const char *id; | |
74fe54f2 | 342 | bool has_driver_specific_opts; |
6db5f5d6 | 343 | BlockDriver *drv = NULL; |
666daa68 | 344 | |
666daa68 | 345 | translation = BIOS_ATA_TRANSLATION_AUTO; |
666daa68 MA |
346 | media = MEDIA_DISK; |
347 | ||
0006383e KW |
348 | /* Check common options by copying from all_opts to opts, all other options |
349 | * are stored in bs_opts. */ | |
350 | id = qemu_opts_id(all_opts); | |
351 | opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error); | |
352 | if (error_is_set(&error)) { | |
353 | qerror_report_err(error); | |
354 | error_free(error); | |
355 | return NULL; | |
356 | } | |
357 | ||
358 | bs_opts = qdict_new(); | |
359 | qemu_opts_to_qdict(all_opts, bs_opts); | |
360 | qemu_opts_absorb_qdict(opts, bs_opts, &error); | |
361 | if (error_is_set(&error)) { | |
362 | qerror_report_err(error); | |
363 | error_free(error); | |
364 | return NULL; | |
365 | } | |
366 | ||
367 | if (id) { | |
368 | qdict_del(bs_opts, "id"); | |
369 | } | |
370 | ||
74fe54f2 KW |
371 | has_driver_specific_opts = !!qdict_size(bs_opts); |
372 | ||
666daa68 MA |
373 | /* extract parameters */ |
374 | bus_id = qemu_opt_get_number(opts, "bus", 0); | |
375 | unit_id = qemu_opt_get_number(opts, "unit", -1); | |
376 | index = qemu_opt_get_number(opts, "index", -1); | |
377 | ||
378 | cyls = qemu_opt_get_number(opts, "cyls", 0); | |
379 | heads = qemu_opt_get_number(opts, "heads", 0); | |
380 | secs = qemu_opt_get_number(opts, "secs", 0); | |
381 | ||
382 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); | |
0f227a94 | 383 | ro = qemu_opt_get_bool(opts, "read-only", 0); |
fb0490f6 | 384 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 MA |
385 | |
386 | file = qemu_opt_get(opts, "file"); | |
387 | serial = qemu_opt_get(opts, "serial"); | |
388 | ||
389 | if ((buf = qemu_opt_get(opts, "if")) != NULL) { | |
1960966d MA |
390 | for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++) |
391 | ; | |
392 | if (type == IF_COUNT) { | |
807105a7 | 393 | error_report("unsupported bus type '%s'", buf); |
666daa68 MA |
394 | return NULL; |
395 | } | |
2d3999fe | 396 | } else { |
2d0d2837 | 397 | type = block_default_type; |
666daa68 | 398 | } |
2d3999fe | 399 | |
1960966d | 400 | max_devs = if_max_devs[type]; |
666daa68 MA |
401 | |
402 | if (cyls || heads || secs) { | |
aaea3f36 | 403 | if (cyls < 1) { |
807105a7 | 404 | error_report("invalid physical cyls number"); |
666daa68 MA |
405 | return NULL; |
406 | } | |
aaea3f36 | 407 | if (heads < 1) { |
807105a7 | 408 | error_report("invalid physical heads number"); |
666daa68 MA |
409 | return NULL; |
410 | } | |
aaea3f36 | 411 | if (secs < 1) { |
807105a7 | 412 | error_report("invalid physical secs number"); |
666daa68 MA |
413 | return NULL; |
414 | } | |
415 | } | |
416 | ||
417 | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { | |
418 | if (!cyls) { | |
e4080f9b | 419 | error_report("'%s' trans must be used with cyls, heads and secs", |
807105a7 | 420 | buf); |
666daa68 MA |
421 | return NULL; |
422 | } | |
423 | if (!strcmp(buf, "none")) | |
424 | translation = BIOS_ATA_TRANSLATION_NONE; | |
425 | else if (!strcmp(buf, "lba")) | |
426 | translation = BIOS_ATA_TRANSLATION_LBA; | |
427 | else if (!strcmp(buf, "auto")) | |
428 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
429 | else { | |
807105a7 | 430 | error_report("'%s' invalid translation type", buf); |
666daa68 MA |
431 | return NULL; |
432 | } | |
433 | } | |
434 | ||
435 | if ((buf = qemu_opt_get(opts, "media")) != NULL) { | |
436 | if (!strcmp(buf, "disk")) { | |
437 | media = MEDIA_DISK; | |
438 | } else if (!strcmp(buf, "cdrom")) { | |
439 | if (cyls || secs || heads) { | |
e7ff8f0e | 440 | error_report("CHS can't be set with media=%s", buf); |
666daa68 MA |
441 | return NULL; |
442 | } | |
443 | media = MEDIA_CDROM; | |
444 | } else { | |
807105a7 | 445 | error_report("'%s' invalid media", buf); |
666daa68 MA |
446 | return NULL; |
447 | } | |
448 | } | |
449 | ||
a9384aff PB |
450 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
451 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
452 | error_report("invalid discard option"); | |
453 | return NULL; | |
454 | } | |
455 | } | |
456 | ||
29c4e2b5 KW |
457 | if (qemu_opt_get_bool(opts, "cache.writeback", true)) { |
458 | bdrv_flags |= BDRV_O_CACHE_WB; | |
459 | } | |
460 | if (qemu_opt_get_bool(opts, "cache.direct", false)) { | |
461 | bdrv_flags |= BDRV_O_NOCACHE; | |
462 | } | |
463 | if (qemu_opt_get_bool(opts, "cache.no-flush", true)) { | |
464 | bdrv_flags |= BDRV_O_NO_FLUSH; | |
666daa68 MA |
465 | } |
466 | ||
467 | #ifdef CONFIG_LINUX_AIO | |
468 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
469 | if (!strcmp(buf, "native")) { | |
470 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
471 | } else if (!strcmp(buf, "threads")) { | |
472 | /* this is the default */ | |
473 | } else { | |
807105a7 | 474 | error_report("invalid aio option"); |
666daa68 MA |
475 | return NULL; |
476 | } | |
477 | } | |
478 | #endif | |
479 | ||
480 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
481 | if (is_help_option(buf)) { |
482 | error_printf("Supported formats:"); | |
483 | bdrv_iterate_format(bdrv_format_print, NULL); | |
484 | error_printf("\n"); | |
485 | return NULL; | |
666daa68 | 486 | } |
74fe54f2 | 487 | |
6db5f5d6 MQ |
488 | drv = bdrv_find_whitelisted_format(buf, ro); |
489 | if (!drv) { | |
490 | error_report("'%s' invalid format", buf); | |
491 | return NULL; | |
492 | } | |
666daa68 MA |
493 | } |
494 | ||
0563e191 ZYW |
495 | /* disk I/O throttling */ |
496 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = | |
57975222 | 497 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
0563e191 | 498 | io_limits.bps[BLOCK_IO_LIMIT_READ] = |
57975222 | 499 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
0563e191 | 500 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = |
57975222 | 501 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
0563e191 | 502 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL] = |
57975222 | 503 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
0563e191 | 504 | io_limits.iops[BLOCK_IO_LIMIT_READ] = |
57975222 | 505 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
0563e191 | 506 | io_limits.iops[BLOCK_IO_LIMIT_WRITE] = |
57975222 | 507 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 508 | |
c546194f SH |
509 | if (!do_check_io_limits(&io_limits, &error)) { |
510 | error_report("%s", error_get_pretty(error)); | |
511 | error_free(error); | |
0563e191 ZYW |
512 | return NULL; |
513 | } | |
514 | ||
0d92d17a JK |
515 | if (qemu_opt_get(opts, "boot") != NULL) { |
516 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
517 | "ignored. Future versions will reject this parameter. Please " | |
518 | "update your scripts.\n"); | |
519 | } | |
520 | ||
92aa5c6d | 521 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
522 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
523 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
807105a7 | 524 | error_report("werror is not supported by this bus type"); |
666daa68 MA |
525 | return NULL; |
526 | } | |
527 | ||
528 | on_write_error = parse_block_error_action(buf, 0); | |
529 | if (on_write_error < 0) { | |
530 | return NULL; | |
531 | } | |
532 | } | |
533 | ||
92aa5c6d | 534 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 535 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 536 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 537 | error_report("rerror is not supported by this bus type"); |
666daa68 MA |
538 | return NULL; |
539 | } | |
540 | ||
541 | on_read_error = parse_block_error_action(buf, 1); | |
542 | if (on_read_error < 0) { | |
543 | return NULL; | |
544 | } | |
545 | } | |
546 | ||
547 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
548 | if (type != IF_VIRTIO) { | |
807105a7 | 549 | error_report("addr is not supported by this bus type"); |
666daa68 MA |
550 | return NULL; |
551 | } | |
552 | } | |
553 | ||
554 | /* compute bus and unit according index */ | |
555 | ||
556 | if (index != -1) { | |
557 | if (bus_id != 0 || unit_id != -1) { | |
807105a7 | 558 | error_report("index cannot be used with bus and unit"); |
666daa68 MA |
559 | return NULL; |
560 | } | |
505a7fb1 MA |
561 | bus_id = drive_index_to_bus_id(type, index); |
562 | unit_id = drive_index_to_unit_id(type, index); | |
666daa68 MA |
563 | } |
564 | ||
565 | /* if user doesn't specify a unit_id, | |
566 | * try to find the first free | |
567 | */ | |
568 | ||
569 | if (unit_id == -1) { | |
570 | unit_id = 0; | |
571 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
572 | unit_id++; | |
573 | if (max_devs && unit_id >= max_devs) { | |
574 | unit_id -= max_devs; | |
575 | bus_id++; | |
576 | } | |
577 | } | |
578 | } | |
579 | ||
580 | /* check unit id */ | |
581 | ||
582 | if (max_devs && unit_id >= max_devs) { | |
807105a7 MA |
583 | error_report("unit %d too big (max is %d)", |
584 | unit_id, max_devs - 1); | |
666daa68 MA |
585 | return NULL; |
586 | } | |
587 | ||
588 | /* | |
4e5d9b57 | 589 | * catch multiple definitions |
666daa68 MA |
590 | */ |
591 | ||
592 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
4e5d9b57 MA |
593 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
594 | bus_id, unit_id, index); | |
666daa68 MA |
595 | return NULL; |
596 | } | |
597 | ||
598 | /* init */ | |
599 | ||
7267c094 | 600 | dinfo = g_malloc0(sizeof(*dinfo)); |
666daa68 | 601 | if ((buf = qemu_opts_id(opts)) != NULL) { |
7267c094 | 602 | dinfo->id = g_strdup(buf); |
666daa68 MA |
603 | } else { |
604 | /* no id supplied -> create one */ | |
7267c094 | 605 | dinfo->id = g_malloc0(32); |
666daa68 MA |
606 | if (type == IF_IDE || type == IF_SCSI) |
607 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
608 | if (max_devs) | |
609 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
79d21d5b | 610 | if_name[type], bus_id, mediastr, unit_id); |
666daa68 MA |
611 | else |
612 | snprintf(dinfo->id, 32, "%s%s%i", | |
79d21d5b | 613 | if_name[type], mediastr, unit_id); |
666daa68 MA |
614 | } |
615 | dinfo->bdrv = bdrv_new(dinfo->id); | |
80dd1aae KS |
616 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
617 | dinfo->bdrv->read_only = ro; | |
666daa68 MA |
618 | dinfo->devaddr = devaddr; |
619 | dinfo->type = type; | |
620 | dinfo->bus = bus_id; | |
621 | dinfo->unit = unit_id; | |
317bb412 MA |
622 | dinfo->cyls = cyls; |
623 | dinfo->heads = heads; | |
624 | dinfo->secs = secs; | |
625 | dinfo->trans = translation; | |
0006383e | 626 | dinfo->opts = all_opts; |
84fb3925 | 627 | dinfo->refcount = 1; |
bb44619b KW |
628 | if (serial != NULL) { |
629 | dinfo->serial = g_strdup(serial); | |
630 | } | |
666daa68 MA |
631 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
632 | ||
abd7f68d MA |
633 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
634 | ||
0563e191 ZYW |
635 | /* disk I/O throttling */ |
636 | bdrv_set_io_limits(dinfo->bdrv, &io_limits); | |
637 | ||
666daa68 MA |
638 | switch(type) { |
639 | case IF_IDE: | |
640 | case IF_SCSI: | |
641 | case IF_XEN: | |
642 | case IF_NONE: | |
2b584959 | 643 | dinfo->media_cd = media == MEDIA_CDROM; |
666daa68 MA |
644 | break; |
645 | case IF_SD: | |
666daa68 | 646 | case IF_FLOPPY: |
666daa68 MA |
647 | case IF_PFLASH: |
648 | case IF_MTD: | |
649 | break; | |
650 | case IF_VIRTIO: | |
0006383e | 651 | { |
666daa68 | 652 | /* add virtio block device */ |
0006383e KW |
653 | QemuOpts *devopts; |
654 | devopts = qemu_opts_create_nofail(qemu_find_opts("device")); | |
eeb9c1b5 | 655 | if (arch_type == QEMU_ARCH_S390X) { |
0006383e | 656 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); |
eeb9c1b5 | 657 | } else { |
0006383e | 658 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); |
eeb9c1b5 | 659 | } |
0006383e | 660 | qemu_opt_set(devopts, "drive", dinfo->id); |
666daa68 | 661 | if (devaddr) |
0006383e | 662 | qemu_opt_set(devopts, "addr", devaddr); |
666daa68 | 663 | break; |
0006383e | 664 | } |
2292ddae | 665 | default: |
666daa68 MA |
666 | abort(); |
667 | } | |
dd5b0d71 | 668 | if (!file || !*file) { |
74fe54f2 | 669 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
670 | file = NULL; |
671 | } else { | |
672 | return dinfo; | |
673 | } | |
666daa68 MA |
674 | } |
675 | if (snapshot) { | |
676 | /* always use cache=unsafe with snapshot */ | |
677 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
678 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
679 | } | |
680 | ||
fb0490f6 SH |
681 | if (copy_on_read) { |
682 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
683 | } | |
684 | ||
ed9d4205 BC |
685 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
686 | bdrv_flags |= BDRV_O_INCOMING; | |
687 | } | |
688 | ||
666daa68 MA |
689 | if (media == MEDIA_CDROM) { |
690 | /* CDROM is fine for any interface, don't check. */ | |
691 | ro = 1; | |
692 | } else if (ro == 1) { | |
1e9eb78a JJ |
693 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && |
694 | type != IF_NONE && type != IF_PFLASH) { | |
0f227a94 | 695 | error_report("read-only not supported by this bus type"); |
a9ae2bff | 696 | goto err; |
666daa68 MA |
697 | } |
698 | } | |
699 | ||
700 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
701 | ||
04d4abe9 | 702 | if (ro && copy_on_read) { |
0f227a94 | 703 | error_report("warning: disabling copy_on_read on read-only drive"); |
04d4abe9 SH |
704 | } |
705 | ||
74fe54f2 | 706 | QINCREF(bs_opts); |
6db5f5d6 | 707 | ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv); |
0006383e | 708 | |
666daa68 | 709 | if (ret < 0) { |
02582abd SW |
710 | if (ret == -EMEDIUMTYPE) { |
711 | error_report("could not open disk image %s: not in %s format", | |
6db5f5d6 MQ |
712 | file ?: dinfo->id, drv ? drv->format_name : |
713 | qdict_get_str(bs_opts, "driver")); | |
02582abd SW |
714 | } else { |
715 | error_report("could not open disk image %s: %s", | |
c2ad1b0c | 716 | file ?: dinfo->id, strerror(-ret)); |
02582abd | 717 | } |
a9ae2bff | 718 | goto err; |
666daa68 MA |
719 | } |
720 | ||
721 | if (bdrv_key_required(dinfo->bdrv)) | |
722 | autostart = 0; | |
0006383e | 723 | |
74fe54f2 | 724 | QDECREF(bs_opts); |
0006383e KW |
725 | qemu_opts_del(opts); |
726 | ||
666daa68 | 727 | return dinfo; |
a9ae2bff MA |
728 | |
729 | err: | |
0006383e KW |
730 | qemu_opts_del(opts); |
731 | QDECREF(bs_opts); | |
a9ae2bff | 732 | bdrv_delete(dinfo->bdrv); |
7267c094 | 733 | g_free(dinfo->id); |
a9ae2bff | 734 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 735 | g_free(dinfo); |
a9ae2bff | 736 | return NULL; |
666daa68 MA |
737 | } |
738 | ||
57975222 KW |
739 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) |
740 | { | |
741 | const char *value; | |
742 | ||
743 | value = qemu_opt_get(opts, from); | |
744 | if (value) { | |
745 | qemu_opt_set(opts, to, value); | |
746 | qemu_opt_unset(opts, from); | |
747 | } | |
748 | } | |
749 | ||
750 | DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) | |
751 | { | |
29c4e2b5 KW |
752 | const char *value; |
753 | ||
8afaefb8 KW |
754 | /* |
755 | * Check that only old options are used by copying into a QemuOpts with | |
756 | * stricter checks. Going through a QDict seems to be the easiest way to | |
757 | * achieve this... | |
758 | */ | |
759 | QemuOpts* check_opts; | |
760 | QDict *qdict; | |
761 | Error *local_err = NULL; | |
762 | ||
763 | qdict = qemu_opts_to_qdict(all_opts, NULL); | |
764 | check_opts = qemu_opts_from_qdict(&qemu_old_drive_opts, qdict, &local_err); | |
765 | QDECREF(qdict); | |
766 | ||
767 | if (error_is_set(&local_err)) { | |
768 | qerror_report_err(local_err); | |
769 | error_free(local_err); | |
770 | return NULL; | |
771 | } | |
772 | qemu_opts_del(check_opts); | |
773 | ||
57975222 KW |
774 | /* Change legacy command line options into QMP ones */ |
775 | qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); | |
776 | qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); | |
777 | qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); | |
778 | ||
779 | qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); | |
780 | qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); | |
781 | qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); | |
782 | ||
0f227a94 KW |
783 | qemu_opt_rename(all_opts, "readonly", "read-only"); |
784 | ||
29c4e2b5 KW |
785 | value = qemu_opt_get(all_opts, "cache"); |
786 | if (value) { | |
787 | int flags = 0; | |
788 | ||
789 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
790 | error_report("invalid cache option"); | |
791 | return NULL; | |
792 | } | |
793 | ||
794 | /* Specific options take precedence */ | |
795 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
796 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
797 | !!(flags & BDRV_O_CACHE_WB)); | |
798 | } | |
799 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
800 | qemu_opt_set_bool(all_opts, "cache.direct", | |
801 | !!(flags & BDRV_O_NOCACHE)); | |
802 | } | |
803 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
804 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
805 | !!(flags & BDRV_O_NO_FLUSH)); | |
806 | } | |
807 | qemu_opt_unset(all_opts, "cache"); | |
808 | } | |
809 | ||
57975222 KW |
810 | return blockdev_init(all_opts, block_default_type); |
811 | } | |
812 | ||
666daa68 MA |
813 | void do_commit(Monitor *mon, const QDict *qdict) |
814 | { | |
666daa68 | 815 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 816 | BlockDriverState *bs; |
e8877497 | 817 | int ret; |
666daa68 | 818 | |
6ab4b5ab | 819 | if (!strcmp(device, "all")) { |
e8877497 | 820 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
821 | } else { |
822 | bs = bdrv_find(device); | |
ac59eb95 | 823 | if (!bs) { |
58513bde | 824 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 825 | return; |
6ab4b5ab | 826 | } |
2d3735d3 | 827 | ret = bdrv_commit(bs); |
58513bde JC |
828 | } |
829 | if (ret < 0) { | |
830 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
831 | strerror(-ret)); | |
666daa68 MA |
832 | } |
833 | } | |
834 | ||
6cc2a415 PB |
835 | static void blockdev_do_action(int kind, void *data, Error **errp) |
836 | { | |
c8a83e85 KW |
837 | TransactionAction action; |
838 | TransactionActionList list; | |
6cc2a415 PB |
839 | |
840 | action.kind = kind; | |
841 | action.data = data; | |
842 | list.value = &action; | |
843 | list.next = NULL; | |
844 | qmp_transaction(&list, errp); | |
845 | } | |
846 | ||
6106e249 LC |
847 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
848 | bool has_format, const char *format, | |
6cc2a415 | 849 | bool has_mode, enum NewImageMode mode, |
6106e249 | 850 | Error **errp) |
f8882568 | 851 | { |
6cc2a415 PB |
852 | BlockdevSnapshot snapshot = { |
853 | .device = (char *) device, | |
854 | .snapshot_file = (char *) snapshot_file, | |
855 | .has_format = has_format, | |
856 | .format = (char *) format, | |
857 | .has_mode = has_mode, | |
858 | .mode = mode, | |
859 | }; | |
c8a83e85 KW |
860 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
861 | &snapshot, errp); | |
f8882568 JS |
862 | } |
863 | ||
8802d1fd JC |
864 | |
865 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 866 | |
ba5d6ab6 | 867 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
868 | |
869 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
870 | abort() will be called, clean() will always be called if it present. */ | |
871 | typedef struct BdrvActionOps { | |
872 | /* Size of state struct, in bytes. */ | |
873 | size_t instance_size; | |
874 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 875 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 876 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 877 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 878 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 879 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 880 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 881 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
882 | } BdrvActionOps; |
883 | ||
884 | /* | |
885 | * This structure must be arranged as first member in child type, assuming | |
886 | * that compiler will also arrange it to the same address with parent instance. | |
887 | * Later it will be used in free(). | |
888 | */ | |
ba5d6ab6 | 889 | struct BlkTransactionState { |
c8a83e85 | 890 | TransactionAction *action; |
ba0c86a3 | 891 | const BdrvActionOps *ops; |
ba5d6ab6 | 892 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
893 | }; |
894 | ||
895 | /* external snapshot private data */ | |
ba5d6ab6 SH |
896 | typedef struct ExternalSnapshotState { |
897 | BlkTransactionState common; | |
8802d1fd JC |
898 | BlockDriverState *old_bs; |
899 | BlockDriverState *new_bs; | |
ba5d6ab6 | 900 | } ExternalSnapshotState; |
8802d1fd | 901 | |
ba5d6ab6 | 902 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
903 | Error **errp) |
904 | { | |
9b9877ee WX |
905 | BlockDriver *drv; |
906 | int flags, ret; | |
907 | Error *local_err = NULL; | |
e2a31e87 WX |
908 | const char *device; |
909 | const char *new_image_file; | |
910 | const char *format = "qcow2"; | |
911 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
912 | ExternalSnapshotState *state = |
913 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 914 | TransactionAction *action = common->action; |
9b9877ee | 915 | |
e2a31e87 | 916 | /* get parameters */ |
c8a83e85 | 917 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 WX |
918 | |
919 | device = action->blockdev_snapshot_sync->device; | |
920 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; | |
921 | if (action->blockdev_snapshot_sync->has_format) { | |
922 | format = action->blockdev_snapshot_sync->format; | |
923 | } | |
924 | if (action->blockdev_snapshot_sync->has_mode) { | |
925 | mode = action->blockdev_snapshot_sync->mode; | |
926 | } | |
927 | ||
928 | /* start processing */ | |
9b9877ee WX |
929 | drv = bdrv_find_format(format); |
930 | if (!drv) { | |
931 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
932 | return; | |
933 | } | |
934 | ||
ba5d6ab6 SH |
935 | state->old_bs = bdrv_find(device); |
936 | if (!state->old_bs) { | |
9b9877ee WX |
937 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
938 | return; | |
939 | } | |
940 | ||
ba5d6ab6 | 941 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
942 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
943 | return; | |
944 | } | |
945 | ||
ba5d6ab6 | 946 | if (bdrv_in_use(state->old_bs)) { |
9b9877ee WX |
947 | error_set(errp, QERR_DEVICE_IN_USE, device); |
948 | return; | |
949 | } | |
950 | ||
ba5d6ab6 SH |
951 | if (!bdrv_is_read_only(state->old_bs)) { |
952 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
953 | error_set(errp, QERR_IO_ERROR); |
954 | return; | |
955 | } | |
956 | } | |
957 | ||
ba5d6ab6 | 958 | flags = state->old_bs->open_flags; |
9b9877ee | 959 | |
9b9877ee WX |
960 | /* create new image w/backing file */ |
961 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
962 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
963 | state->old_bs->filename, |
964 | state->old_bs->drv->format_name, | |
9b9877ee WX |
965 | NULL, -1, flags, &local_err, false); |
966 | if (error_is_set(&local_err)) { | |
967 | error_propagate(errp, local_err); | |
968 | return; | |
969 | } | |
970 | } | |
971 | ||
972 | /* We will manually add the backing_hd field to the bs later */ | |
ba5d6ab6 | 973 | state->new_bs = bdrv_new(""); |
9b9877ee WX |
974 | /* TODO Inherit bs->options or only take explicit options with an |
975 | * extended QMP command? */ | |
ba5d6ab6 | 976 | ret = bdrv_open(state->new_bs, new_image_file, NULL, |
9b9877ee WX |
977 | flags | BDRV_O_NO_BACKING, drv); |
978 | if (ret != 0) { | |
0eef407c | 979 | error_setg_file_open(errp, -ret, new_image_file); |
9b9877ee WX |
980 | } |
981 | } | |
982 | ||
ba5d6ab6 | 983 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 984 | { |
ba5d6ab6 SH |
985 | ExternalSnapshotState *state = |
986 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 987 | |
ba5d6ab6 SH |
988 | /* This removes our old bs and adds the new bs */ |
989 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
990 | /* We don't need (or want) to use the transactional |
991 | * bdrv_reopen_multiple() across all the entries at once, because we | |
992 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 993 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
994 | NULL); |
995 | } | |
996 | ||
ba5d6ab6 | 997 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 998 | { |
ba5d6ab6 SH |
999 | ExternalSnapshotState *state = |
1000 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1001 | if (state->new_bs) { | |
1002 | bdrv_delete(state->new_bs); | |
96b86bf7 WX |
1003 | } |
1004 | } | |
1005 | ||
3037f364 SH |
1006 | typedef struct DriveBackupState { |
1007 | BlkTransactionState common; | |
1008 | BlockDriverState *bs; | |
1009 | BlockJob *job; | |
1010 | } DriveBackupState; | |
1011 | ||
1012 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1013 | { | |
1014 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1015 | DriveBackup *backup; | |
1016 | Error *local_err = NULL; | |
1017 | ||
1018 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1019 | backup = common->action->drive_backup; | |
1020 | ||
1021 | qmp_drive_backup(backup->device, backup->target, | |
1022 | backup->has_format, backup->format, | |
b53169ea | 1023 | backup->sync, |
3037f364 SH |
1024 | backup->has_mode, backup->mode, |
1025 | backup->has_speed, backup->speed, | |
1026 | backup->has_on_source_error, backup->on_source_error, | |
1027 | backup->has_on_target_error, backup->on_target_error, | |
1028 | &local_err); | |
1029 | if (error_is_set(&local_err)) { | |
1030 | error_propagate(errp, local_err); | |
1031 | state->bs = NULL; | |
1032 | state->job = NULL; | |
1033 | return; | |
1034 | } | |
1035 | ||
1036 | state->bs = bdrv_find(backup->device); | |
1037 | state->job = state->bs->job; | |
1038 | } | |
1039 | ||
1040 | static void drive_backup_abort(BlkTransactionState *common) | |
1041 | { | |
1042 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1043 | BlockDriverState *bs = state->bs; | |
1044 | ||
1045 | /* Only cancel if it's the job we started */ | |
1046 | if (bs && bs->job && bs->job == state->job) { | |
1047 | block_job_cancel_sync(bs->job); | |
1048 | } | |
1049 | } | |
1050 | ||
78b18b78 SH |
1051 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1052 | { | |
1053 | error_setg(errp, "Transaction aborted using Abort action"); | |
1054 | } | |
1055 | ||
1056 | static void abort_commit(BlkTransactionState *common) | |
1057 | { | |
dfc6f865 | 1058 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1059 | } |
1060 | ||
ba0c86a3 | 1061 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1062 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1063 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1064 | .prepare = external_snapshot_prepare, |
1065 | .commit = external_snapshot_commit, | |
1066 | .abort = external_snapshot_abort, | |
1067 | }, | |
3037f364 SH |
1068 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1069 | .instance_size = sizeof(DriveBackupState), | |
1070 | .prepare = drive_backup_prepare, | |
1071 | .abort = drive_backup_abort, | |
1072 | }, | |
78b18b78 SH |
1073 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1074 | .instance_size = sizeof(BlkTransactionState), | |
1075 | .prepare = abort_prepare, | |
1076 | .commit = abort_commit, | |
1077 | }, | |
ba0c86a3 WX |
1078 | }; |
1079 | ||
8802d1fd JC |
1080 | /* |
1081 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1082 | * then we do not pivot any of the devices in the group, and abandon the | |
1083 | * snapshots | |
1084 | */ | |
c8a83e85 | 1085 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1086 | { |
c8a83e85 | 1087 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1088 | BlkTransactionState *state, *next; |
43e17041 | 1089 | Error *local_err = NULL; |
8802d1fd | 1090 | |
ba5d6ab6 | 1091 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1092 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1093 | ||
1094 | /* drain all i/o before any snapshots */ | |
1095 | bdrv_drain_all(); | |
1096 | ||
1097 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1098 | while (NULL != dev_entry) { | |
c8a83e85 | 1099 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1100 | const BdrvActionOps *ops; |
52e7c241 | 1101 | |
8802d1fd JC |
1102 | dev_info = dev_entry->value; |
1103 | dev_entry = dev_entry->next; | |
1104 | ||
ba0c86a3 WX |
1105 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1106 | ||
1107 | ops = &actions[dev_info->kind]; | |
ba5d6ab6 SH |
1108 | state = g_malloc0(ops->instance_size); |
1109 | state->ops = ops; | |
1110 | state->action = dev_info; | |
1111 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1112 | |
ba5d6ab6 | 1113 | state->ops->prepare(state, &local_err); |
ba0c86a3 WX |
1114 | if (error_is_set(&local_err)) { |
1115 | error_propagate(errp, local_err); | |
1116 | goto delete_and_fail; | |
8802d1fd | 1117 | } |
8802d1fd JC |
1118 | } |
1119 | ||
ba5d6ab6 | 1120 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1121 | if (state->ops->commit) { |
1122 | state->ops->commit(state); | |
1123 | } | |
8802d1fd JC |
1124 | } |
1125 | ||
1126 | /* success */ | |
1127 | goto exit; | |
1128 | ||
1129 | delete_and_fail: | |
1130 | /* | |
1131 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1132 | * the original bs for all images | |
1133 | */ | |
ba5d6ab6 SH |
1134 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1135 | if (state->ops->abort) { | |
1136 | state->ops->abort(state); | |
ba0c86a3 | 1137 | } |
8802d1fd JC |
1138 | } |
1139 | exit: | |
ba5d6ab6 SH |
1140 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1141 | if (state->ops->clean) { | |
1142 | state->ops->clean(state); | |
ba0c86a3 | 1143 | } |
ba5d6ab6 | 1144 | g_free(state); |
8802d1fd | 1145 | } |
8802d1fd JC |
1146 | } |
1147 | ||
1148 | ||
92d48558 | 1149 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1150 | { |
2d3735d3 SH |
1151 | if (bdrv_in_use(bs)) { |
1152 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
1153 | return; | |
1154 | } | |
2c6942fa | 1155 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
1156 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
1157 | return; | |
ea8f942f | 1158 | } |
92d48558 | 1159 | |
025ccaa7 PB |
1160 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1161 | bdrv_dev_eject_request(bs, force); | |
1162 | if (!force) { | |
92d48558 LC |
1163 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
1164 | return; | |
025ccaa7 | 1165 | } |
666daa68 | 1166 | } |
92d48558 | 1167 | |
3b5276b5 | 1168 | bdrv_close(bs); |
666daa68 MA |
1169 | } |
1170 | ||
c245b6a3 | 1171 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1172 | { |
1173 | BlockDriverState *bs; | |
666daa68 | 1174 | |
c245b6a3 | 1175 | bs = bdrv_find(device); |
666daa68 | 1176 | if (!bs) { |
c245b6a3 LC |
1177 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1178 | return; | |
92d48558 LC |
1179 | } |
1180 | ||
c245b6a3 | 1181 | eject_device(bs, force, errp); |
666daa68 MA |
1182 | } |
1183 | ||
a4dea8a9 | 1184 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
1185 | { |
1186 | BlockDriverState *bs; | |
1187 | int err; | |
1188 | ||
a4dea8a9 | 1189 | bs = bdrv_find(device); |
666daa68 | 1190 | if (!bs) { |
a4dea8a9 LC |
1191 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1192 | return; | |
666daa68 MA |
1193 | } |
1194 | ||
a4dea8a9 | 1195 | err = bdrv_set_key(bs, password); |
666daa68 | 1196 | if (err == -EINVAL) { |
a4dea8a9 LC |
1197 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1198 | return; | |
666daa68 | 1199 | } else if (err < 0) { |
a4dea8a9 LC |
1200 | error_set(errp, QERR_INVALID_PASSWORD); |
1201 | return; | |
666daa68 | 1202 | } |
666daa68 MA |
1203 | } |
1204 | ||
333a96ec LC |
1205 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1206 | int bdrv_flags, BlockDriver *drv, | |
1207 | const char *password, Error **errp) | |
1208 | { | |
0eef407c LC |
1209 | int ret; |
1210 | ||
1211 | ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv); | |
1212 | if (ret < 0) { | |
1213 | error_setg_file_open(errp, -ret, filename); | |
333a96ec LC |
1214 | return; |
1215 | } | |
1216 | ||
1217 | if (bdrv_key_required(bs)) { | |
1218 | if (password) { | |
1219 | if (bdrv_set_key(bs, password) < 0) { | |
1220 | error_set(errp, QERR_INVALID_PASSWORD); | |
1221 | } | |
1222 | } else { | |
1223 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1224 | bdrv_get_encrypted_filename(bs)); | |
1225 | } | |
1226 | } else if (password) { | |
1227 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1228 | } | |
1229 | } | |
1230 | ||
1231 | void qmp_change_blockdev(const char *device, const char *filename, | |
1232 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
1233 | { |
1234 | BlockDriverState *bs; | |
1235 | BlockDriver *drv = NULL; | |
1236 | int bdrv_flags; | |
92d48558 | 1237 | Error *err = NULL; |
666daa68 MA |
1238 | |
1239 | bs = bdrv_find(device); | |
1240 | if (!bs) { | |
333a96ec LC |
1241 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1242 | return; | |
666daa68 | 1243 | } |
333a96ec LC |
1244 | |
1245 | if (format) { | |
b64ec4e4 | 1246 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1247 | if (!drv) { |
333a96ec LC |
1248 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1249 | return; | |
666daa68 MA |
1250 | } |
1251 | } | |
333a96ec | 1252 | |
92d48558 LC |
1253 | eject_device(bs, 0, &err); |
1254 | if (error_is_set(&err)) { | |
333a96ec LC |
1255 | error_propagate(errp, err); |
1256 | return; | |
666daa68 | 1257 | } |
333a96ec | 1258 | |
528f7663 | 1259 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1260 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1261 | |
1262 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1263 | } |
9063f814 | 1264 | |
727f005e | 1265 | /* throttling disk I/O limits */ |
80047da5 LC |
1266 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
1267 | int64_t bps_wr, int64_t iops, int64_t iops_rd, | |
1268 | int64_t iops_wr, Error **errp) | |
727f005e ZYW |
1269 | { |
1270 | BlockIOLimit io_limits; | |
727f005e ZYW |
1271 | BlockDriverState *bs; |
1272 | ||
80047da5 | 1273 | bs = bdrv_find(device); |
727f005e | 1274 | if (!bs) { |
80047da5 LC |
1275 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1276 | return; | |
727f005e ZYW |
1277 | } |
1278 | ||
80047da5 LC |
1279 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = bps; |
1280 | io_limits.bps[BLOCK_IO_LIMIT_READ] = bps_rd; | |
1281 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = bps_wr; | |
1282 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL]= iops; | |
1283 | io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd; | |
1284 | io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr; | |
727f005e | 1285 | |
c546194f | 1286 | if (!do_check_io_limits(&io_limits, errp)) { |
80047da5 | 1287 | return; |
727f005e ZYW |
1288 | } |
1289 | ||
1290 | bs->io_limits = io_limits; | |
727f005e ZYW |
1291 | |
1292 | if (!bs->io_limits_enabled && bdrv_io_limits_enabled(bs)) { | |
1293 | bdrv_io_limits_enable(bs); | |
1294 | } else if (bs->io_limits_enabled && !bdrv_io_limits_enabled(bs)) { | |
1295 | bdrv_io_limits_disable(bs); | |
1296 | } else { | |
1297 | if (bs->block_timer) { | |
1298 | qemu_mod_timer(bs->block_timer, qemu_get_clock_ns(vm_clock)); | |
1299 | } | |
1300 | } | |
727f005e ZYW |
1301 | } |
1302 | ||
9063f814 RH |
1303 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1304 | { | |
1305 | const char *id = qdict_get_str(qdict, "id"); | |
1306 | BlockDriverState *bs; | |
9063f814 RH |
1307 | |
1308 | bs = bdrv_find(id); | |
1309 | if (!bs) { | |
1310 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1311 | return -1; | |
1312 | } | |
8591675f MT |
1313 | if (bdrv_in_use(bs)) { |
1314 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1315 | return -1; | |
1316 | } | |
9063f814 RH |
1317 | |
1318 | /* quiesce block driver; prevent further io */ | |
922453bc | 1319 | bdrv_drain_all(); |
9063f814 RH |
1320 | bdrv_flush(bs); |
1321 | bdrv_close(bs); | |
1322 | ||
fa879d62 | 1323 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1324 | * then we need to make the drive anonymous until the device |
1325 | * can be removed. If this is a drive with no device backing | |
1326 | * then we can just get rid of the block driver state right here. | |
1327 | */ | |
fa879d62 | 1328 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 | 1329 | bdrv_make_anon(bs); |
293c51a6 SH |
1330 | |
1331 | /* Further I/O must not pause the guest */ | |
1332 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1333 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 RH |
1334 | } else { |
1335 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1336 | } |
1337 | ||
9063f814 RH |
1338 | return 0; |
1339 | } | |
6d4a2b3a | 1340 | |
5e7caacb | 1341 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1342 | { |
6d4a2b3a | 1343 | BlockDriverState *bs; |
8732901e | 1344 | int ret; |
6d4a2b3a CH |
1345 | |
1346 | bs = bdrv_find(device); | |
1347 | if (!bs) { | |
5e7caacb LC |
1348 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1349 | return; | |
6d4a2b3a CH |
1350 | } |
1351 | ||
1352 | if (size < 0) { | |
939a1cc3 | 1353 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1354 | return; |
6d4a2b3a CH |
1355 | } |
1356 | ||
92b7a08d PL |
1357 | /* complete all in-flight operations before resizing the device */ |
1358 | bdrv_drain_all(); | |
1359 | ||
8732901e KW |
1360 | ret = bdrv_truncate(bs, size); |
1361 | switch (ret) { | |
939a1cc3 SH |
1362 | case 0: |
1363 | break; | |
1364 | case -ENOMEDIUM: | |
1365 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1366 | break; | |
1367 | case -ENOTSUP: | |
1368 | error_set(errp, QERR_UNSUPPORTED); | |
1369 | break; | |
1370 | case -EACCES: | |
1371 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1372 | break; | |
1373 | case -EBUSY: | |
1374 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1375 | break; | |
1376 | default: | |
8732901e | 1377 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1378 | break; |
6d4a2b3a | 1379 | } |
6d4a2b3a | 1380 | } |
12bd451f | 1381 | |
9abf2dba | 1382 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1383 | { |
1384 | BlockDriverState *bs = opaque; | |
1385 | QObject *obj; | |
1386 | ||
9abf2dba | 1387 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1388 | |
1389 | assert(bs->job); | |
1390 | obj = qobject_from_block_job(bs->job); | |
1391 | if (ret < 0) { | |
1392 | QDict *dict = qobject_to_qdict(obj); | |
1393 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1394 | } | |
1395 | ||
370521a1 SH |
1396 | if (block_job_is_cancelled(bs->job)) { |
1397 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1398 | } else { | |
1399 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1400 | } | |
12bd451f | 1401 | qobject_decref(obj); |
aa398a5c SH |
1402 | |
1403 | drive_put_ref_bh_schedule(drive_get_by_blockdev(bs)); | |
12bd451f SH |
1404 | } |
1405 | ||
1406 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1407 | const char *base, bool has_speed, int64_t speed, |
1408 | bool has_on_error, BlockdevOnError on_error, | |
1409 | Error **errp) | |
12bd451f SH |
1410 | { |
1411 | BlockDriverState *bs; | |
c8c3080f | 1412 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1413 | Error *local_err = NULL; |
12bd451f | 1414 | |
1d809098 PB |
1415 | if (!has_on_error) { |
1416 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1417 | } | |
1418 | ||
12bd451f SH |
1419 | bs = bdrv_find(device); |
1420 | if (!bs) { | |
1421 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1422 | return; | |
1423 | } | |
1424 | ||
12bd451f | 1425 | if (base) { |
c8c3080f MT |
1426 | base_bs = bdrv_find_backing_image(bs, base); |
1427 | if (base_bs == NULL) { | |
1428 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1429 | return; | |
1430 | } | |
12bd451f SH |
1431 | } |
1432 | ||
c83c66c3 | 1433 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1434 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1435 | if (error_is_set(&local_err)) { |
1436 | error_propagate(errp, local_err); | |
1437 | return; | |
12bd451f SH |
1438 | } |
1439 | ||
aa398a5c SH |
1440 | /* Grab a reference so hotplug does not delete the BlockDriverState from |
1441 | * underneath us. | |
1442 | */ | |
1443 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1444 | ||
12bd451f SH |
1445 | trace_qmp_block_stream(bs, bs->job); |
1446 | } | |
2d47c6e9 | 1447 | |
ed61fc10 JC |
1448 | void qmp_block_commit(const char *device, |
1449 | bool has_base, const char *base, const char *top, | |
1450 | bool has_speed, int64_t speed, | |
1451 | Error **errp) | |
1452 | { | |
1453 | BlockDriverState *bs; | |
1454 | BlockDriverState *base_bs, *top_bs; | |
1455 | Error *local_err = NULL; | |
1456 | /* This will be part of the QMP command, if/when the | |
1457 | * BlockdevOnError change for blkmirror makes it in | |
1458 | */ | |
92aa5c6d | 1459 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1460 | |
1461 | /* drain all i/o before commits */ | |
1462 | bdrv_drain_all(); | |
1463 | ||
1464 | bs = bdrv_find(device); | |
1465 | if (!bs) { | |
1466 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1467 | return; | |
1468 | } | |
ed61fc10 JC |
1469 | |
1470 | /* default top_bs is the active layer */ | |
1471 | top_bs = bs; | |
1472 | ||
1473 | if (top) { | |
1474 | if (strcmp(bs->filename, top) != 0) { | |
1475 | top_bs = bdrv_find_backing_image(bs, top); | |
1476 | } | |
1477 | } | |
1478 | ||
1479 | if (top_bs == NULL) { | |
1480 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1481 | return; | |
1482 | } | |
1483 | ||
d5208c45 JC |
1484 | if (has_base && base) { |
1485 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1486 | } else { | |
1487 | base_bs = bdrv_find_base(top_bs); | |
1488 | } | |
1489 | ||
1490 | if (base_bs == NULL) { | |
1491 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1492 | return; | |
1493 | } | |
1494 | ||
ed61fc10 JC |
1495 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1496 | &local_err); | |
1497 | if (local_err != NULL) { | |
1498 | error_propagate(errp, local_err); | |
1499 | return; | |
1500 | } | |
1501 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1502 | * underneath us. | |
1503 | */ | |
1504 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1505 | } | |
1506 | ||
99a9addf SH |
1507 | void qmp_drive_backup(const char *device, const char *target, |
1508 | bool has_format, const char *format, | |
b53169ea | 1509 | enum MirrorSyncMode sync, |
99a9addf SH |
1510 | bool has_mode, enum NewImageMode mode, |
1511 | bool has_speed, int64_t speed, | |
1512 | bool has_on_source_error, BlockdevOnError on_source_error, | |
1513 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1514 | Error **errp) | |
1515 | { | |
1516 | BlockDriverState *bs; | |
1517 | BlockDriverState *target_bs; | |
fc5d3f84 | 1518 | BlockDriverState *source = NULL; |
99a9addf SH |
1519 | BlockDriver *drv = NULL; |
1520 | Error *local_err = NULL; | |
1521 | int flags; | |
1522 | int64_t size; | |
1523 | int ret; | |
1524 | ||
1525 | if (!has_speed) { | |
1526 | speed = 0; | |
1527 | } | |
1528 | if (!has_on_source_error) { | |
1529 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1530 | } | |
1531 | if (!has_on_target_error) { | |
1532 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1533 | } | |
1534 | if (!has_mode) { | |
1535 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1536 | } | |
1537 | ||
1538 | bs = bdrv_find(device); | |
1539 | if (!bs) { | |
1540 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1541 | return; | |
1542 | } | |
1543 | ||
1544 | if (!bdrv_is_inserted(bs)) { | |
1545 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1546 | return; | |
1547 | } | |
1548 | ||
1549 | if (!has_format) { | |
1550 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1551 | } | |
1552 | if (format) { | |
1553 | drv = bdrv_find_format(format); | |
1554 | if (!drv) { | |
1555 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1556 | return; | |
1557 | } | |
1558 | } | |
1559 | ||
1560 | if (bdrv_in_use(bs)) { | |
1561 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1562 | return; | |
1563 | } | |
1564 | ||
1565 | flags = bs->open_flags | BDRV_O_RDWR; | |
1566 | ||
fc5d3f84 IM |
1567 | /* See if we have a backing HD we can use to create our new image |
1568 | * on top of. */ | |
1569 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
1570 | source = bs->backing_hd; | |
1571 | if (!source) { | |
1572 | sync = MIRROR_SYNC_MODE_FULL; | |
1573 | } | |
1574 | } | |
1575 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
1576 | source = bs; | |
1577 | } | |
1578 | ||
99a9addf SH |
1579 | size = bdrv_getlength(bs); |
1580 | if (size < 0) { | |
1581 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1582 | return; | |
1583 | } | |
1584 | ||
1585 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1586 | assert(format && drv); | |
fc5d3f84 IM |
1587 | if (source) { |
1588 | bdrv_img_create(target, format, source->filename, | |
1589 | source->drv->format_name, NULL, | |
1590 | size, flags, &local_err, false); | |
1591 | } else { | |
1592 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
1593 | size, flags, &local_err, false); | |
1594 | } | |
99a9addf SH |
1595 | } |
1596 | ||
1597 | if (error_is_set(&local_err)) { | |
1598 | error_propagate(errp, local_err); | |
1599 | return; | |
1600 | } | |
1601 | ||
1602 | target_bs = bdrv_new(""); | |
1603 | ret = bdrv_open(target_bs, target, NULL, flags, drv); | |
1604 | if (ret < 0) { | |
1605 | bdrv_delete(target_bs); | |
1606 | error_setg_file_open(errp, -ret, target); | |
1607 | return; | |
1608 | } | |
1609 | ||
fc5d3f84 | 1610 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
1611 | block_job_cb, bs, &local_err); |
1612 | if (local_err != NULL) { | |
1613 | bdrv_delete(target_bs); | |
1614 | error_propagate(errp, local_err); | |
1615 | return; | |
1616 | } | |
1617 | ||
1618 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1619 | * underneath us. | |
1620 | */ | |
1621 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1622 | } | |
1623 | ||
08e4ed6c PB |
1624 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1625 | ||
d9b902db PB |
1626 | void qmp_drive_mirror(const char *device, const char *target, |
1627 | bool has_format, const char *format, | |
1628 | enum MirrorSyncMode sync, | |
1629 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1630 | bool has_speed, int64_t speed, |
eee13dfe | 1631 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1632 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1633 | bool has_on_source_error, BlockdevOnError on_source_error, |
1634 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1635 | Error **errp) | |
d9b902db | 1636 | { |
d9b902db PB |
1637 | BlockDriverState *bs; |
1638 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
1639 | BlockDriver *drv = NULL; |
1640 | Error *local_err = NULL; | |
1641 | int flags; | |
ac3c5d83 | 1642 | int64_t size; |
d9b902db PB |
1643 | int ret; |
1644 | ||
1645 | if (!has_speed) { | |
1646 | speed = 0; | |
1647 | } | |
b952b558 PB |
1648 | if (!has_on_source_error) { |
1649 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1650 | } | |
1651 | if (!has_on_target_error) { | |
1652 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1653 | } | |
d9b902db PB |
1654 | if (!has_mode) { |
1655 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1656 | } | |
eee13dfe PB |
1657 | if (!has_granularity) { |
1658 | granularity = 0; | |
1659 | } | |
08e4ed6c PB |
1660 | if (!has_buf_size) { |
1661 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1662 | } | |
1663 | ||
eee13dfe PB |
1664 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1665 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1666 | return; | |
1667 | } | |
1668 | if (granularity & (granularity - 1)) { | |
1669 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1670 | return; | |
1671 | } | |
d9b902db PB |
1672 | |
1673 | bs = bdrv_find(device); | |
1674 | if (!bs) { | |
1675 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1676 | return; | |
1677 | } | |
1678 | ||
1679 | if (!bdrv_is_inserted(bs)) { | |
1680 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1681 | return; | |
1682 | } | |
1683 | ||
1684 | if (!has_format) { | |
1685 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1686 | } | |
1687 | if (format) { | |
1688 | drv = bdrv_find_format(format); | |
1689 | if (!drv) { | |
1690 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1691 | return; | |
1692 | } | |
1693 | } | |
1694 | ||
1695 | if (bdrv_in_use(bs)) { | |
1696 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1697 | return; | |
1698 | } | |
1699 | ||
1700 | flags = bs->open_flags | BDRV_O_RDWR; | |
1701 | source = bs->backing_hd; | |
1702 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
1703 | sync = MIRROR_SYNC_MODE_FULL; | |
1704 | } | |
1705 | ||
ac3c5d83 SH |
1706 | size = bdrv_getlength(bs); |
1707 | if (size < 0) { | |
1708 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1709 | return; | |
1710 | } | |
1711 | ||
d9b902db PB |
1712 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
1713 | /* create new image w/o backing file */ | |
1714 | assert(format && drv); | |
cf8f2426 | 1715 | bdrv_img_create(target, format, |
f382d43a | 1716 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
1717 | } else { |
1718 | switch (mode) { | |
1719 | case NEW_IMAGE_MODE_EXISTING: | |
1720 | ret = 0; | |
1721 | break; | |
1722 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
1723 | /* create new image with backing file */ | |
cf8f2426 LC |
1724 | bdrv_img_create(target, format, |
1725 | source->filename, | |
1726 | source->drv->format_name, | |
f382d43a | 1727 | NULL, size, flags, &local_err, false); |
d9b902db PB |
1728 | break; |
1729 | default: | |
1730 | abort(); | |
1731 | } | |
1732 | } | |
1733 | ||
cf8f2426 LC |
1734 | if (error_is_set(&local_err)) { |
1735 | error_propagate(errp, local_err); | |
d9b902db PB |
1736 | return; |
1737 | } | |
1738 | ||
b812f671 PB |
1739 | /* Mirroring takes care of copy-on-write using the source's backing |
1740 | * file. | |
1741 | */ | |
d9b902db | 1742 | target_bs = bdrv_new(""); |
de9c0cec | 1743 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv); |
d9b902db PB |
1744 | if (ret < 0) { |
1745 | bdrv_delete(target_bs); | |
0eef407c | 1746 | error_setg_file_open(errp, -ret, target); |
d9b902db PB |
1747 | return; |
1748 | } | |
1749 | ||
08e4ed6c | 1750 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 1751 | on_source_error, on_target_error, |
b952b558 | 1752 | block_job_cb, bs, &local_err); |
d9b902db PB |
1753 | if (local_err != NULL) { |
1754 | bdrv_delete(target_bs); | |
1755 | error_propagate(errp, local_err); | |
1756 | return; | |
1757 | } | |
1758 | ||
1759 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1760 | * underneath us. | |
1761 | */ | |
1762 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1763 | } | |
1764 | ||
2d47c6e9 SH |
1765 | static BlockJob *find_block_job(const char *device) |
1766 | { | |
1767 | BlockDriverState *bs; | |
1768 | ||
1769 | bs = bdrv_find(device); | |
1770 | if (!bs || !bs->job) { | |
1771 | return NULL; | |
1772 | } | |
1773 | return bs->job; | |
1774 | } | |
1775 | ||
882ec7ce | 1776 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
1777 | { |
1778 | BlockJob *job = find_block_job(device); | |
1779 | ||
1780 | if (!job) { | |
7ef15070 | 1781 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
1782 | return; |
1783 | } | |
1784 | ||
882ec7ce | 1785 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 1786 | } |
370521a1 | 1787 | |
6e37fb81 PB |
1788 | void qmp_block_job_cancel(const char *device, |
1789 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
1790 | { |
1791 | BlockJob *job = find_block_job(device); | |
1792 | ||
6e37fb81 PB |
1793 | if (!has_force) { |
1794 | force = false; | |
1795 | } | |
1796 | ||
370521a1 | 1797 | if (!job) { |
7ef15070 | 1798 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
1799 | return; |
1800 | } | |
6e37fb81 | 1801 | if (job->paused && !force) { |
8acc72a4 PB |
1802 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
1803 | return; | |
1804 | } | |
370521a1 SH |
1805 | |
1806 | trace_qmp_block_job_cancel(job); | |
1807 | block_job_cancel(job); | |
1808 | } | |
fb5458cd | 1809 | |
6e37fb81 PB |
1810 | void qmp_block_job_pause(const char *device, Error **errp) |
1811 | { | |
1812 | BlockJob *job = find_block_job(device); | |
1813 | ||
1814 | if (!job) { | |
1815 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1816 | return; | |
1817 | } | |
1818 | ||
1819 | trace_qmp_block_job_pause(job); | |
1820 | block_job_pause(job); | |
1821 | } | |
1822 | ||
1823 | void qmp_block_job_resume(const char *device, Error **errp) | |
1824 | { | |
1825 | BlockJob *job = find_block_job(device); | |
1826 | ||
1827 | if (!job) { | |
1828 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1829 | return; | |
1830 | } | |
1831 | ||
1832 | trace_qmp_block_job_resume(job); | |
1833 | block_job_resume(job); | |
1834 | } | |
1835 | ||
aeae883b PB |
1836 | void qmp_block_job_complete(const char *device, Error **errp) |
1837 | { | |
1838 | BlockJob *job = find_block_job(device); | |
1839 | ||
1840 | if (!job) { | |
1841 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1842 | return; | |
1843 | } | |
1844 | ||
1845 | trace_qmp_block_job_complete(job); | |
1846 | block_job_complete(job, errp); | |
1847 | } | |
1848 | ||
fb5458cd SH |
1849 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
1850 | { | |
1851 | BlockJobInfoList **prev = opaque; | |
1852 | BlockJob *job = bs->job; | |
1853 | ||
1854 | if (job) { | |
30e628b7 PB |
1855 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
1856 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
1857 | (*prev)->next = elem; |
1858 | *prev = elem; | |
1859 | } | |
1860 | } | |
1861 | ||
1862 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
1863 | { | |
1864 | /* Dummy is a fake list element for holding the head pointer */ | |
1865 | BlockJobInfoList dummy = {}; | |
1866 | BlockJobInfoList *prev = &dummy; | |
1867 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
1868 | return dummy.next; | |
1869 | } | |
4d454574 | 1870 | |
0006383e | 1871 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 1872 | .name = "drive", |
0006383e | 1873 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
1874 | .desc = { |
1875 | { | |
1876 | .name = "bus", | |
1877 | .type = QEMU_OPT_NUMBER, | |
1878 | .help = "bus number", | |
1879 | },{ | |
1880 | .name = "unit", | |
1881 | .type = QEMU_OPT_NUMBER, | |
1882 | .help = "unit number (i.e. lun for scsi)", | |
1883 | },{ | |
1884 | .name = "if", | |
1885 | .type = QEMU_OPT_STRING, | |
1886 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
1887 | },{ | |
1888 | .name = "index", | |
1889 | .type = QEMU_OPT_NUMBER, | |
1890 | .help = "index number", | |
1891 | },{ | |
1892 | .name = "cyls", | |
1893 | .type = QEMU_OPT_NUMBER, | |
1894 | .help = "number of cylinders (ide disk geometry)", | |
1895 | },{ | |
1896 | .name = "heads", | |
1897 | .type = QEMU_OPT_NUMBER, | |
1898 | .help = "number of heads (ide disk geometry)", | |
1899 | },{ | |
1900 | .name = "secs", | |
1901 | .type = QEMU_OPT_NUMBER, | |
1902 | .help = "number of sectors (ide disk geometry)", | |
1903 | },{ | |
1904 | .name = "trans", | |
1905 | .type = QEMU_OPT_STRING, | |
1906 | .help = "chs translation (auto, lba. none)", | |
1907 | },{ | |
1908 | .name = "media", | |
1909 | .type = QEMU_OPT_STRING, | |
1910 | .help = "media type (disk, cdrom)", | |
1911 | },{ | |
1912 | .name = "snapshot", | |
1913 | .type = QEMU_OPT_BOOL, | |
1914 | .help = "enable/disable snapshot mode", | |
1915 | },{ | |
1916 | .name = "file", | |
1917 | .type = QEMU_OPT_STRING, | |
1918 | .help = "disk image", | |
a9384aff PB |
1919 | },{ |
1920 | .name = "discard", | |
1921 | .type = QEMU_OPT_STRING, | |
1922 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 1923 | },{ |
29c4e2b5 KW |
1924 | .name = "cache.writeback", |
1925 | .type = QEMU_OPT_BOOL, | |
1926 | .help = "enables writeback mode for any caches", | |
1927 | },{ | |
1928 | .name = "cache.direct", | |
1929 | .type = QEMU_OPT_BOOL, | |
1930 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
1931 | },{ | |
1932 | .name = "cache.no-flush", | |
1933 | .type = QEMU_OPT_BOOL, | |
1934 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
1935 | },{ |
1936 | .name = "aio", | |
1937 | .type = QEMU_OPT_STRING, | |
1938 | .help = "host AIO implementation (threads, native)", | |
1939 | },{ | |
1940 | .name = "format", | |
1941 | .type = QEMU_OPT_STRING, | |
1942 | .help = "disk format (raw, qcow2, ...)", | |
1943 | },{ | |
1944 | .name = "serial", | |
1945 | .type = QEMU_OPT_STRING, | |
1946 | .help = "disk serial number", | |
1947 | },{ | |
1948 | .name = "rerror", | |
1949 | .type = QEMU_OPT_STRING, | |
1950 | .help = "read error action", | |
1951 | },{ | |
1952 | .name = "werror", | |
1953 | .type = QEMU_OPT_STRING, | |
1954 | .help = "write error action", | |
1955 | },{ | |
1956 | .name = "addr", | |
1957 | .type = QEMU_OPT_STRING, | |
1958 | .help = "pci address (virtio only)", | |
1959 | },{ | |
0f227a94 | 1960 | .name = "read-only", |
4d454574 PB |
1961 | .type = QEMU_OPT_BOOL, |
1962 | .help = "open drive file as read-only", | |
1963 | },{ | |
57975222 | 1964 | .name = "throttling.iops-total", |
4d454574 PB |
1965 | .type = QEMU_OPT_NUMBER, |
1966 | .help = "limit total I/O operations per second", | |
1967 | },{ | |
57975222 | 1968 | .name = "throttling.iops-read", |
4d454574 PB |
1969 | .type = QEMU_OPT_NUMBER, |
1970 | .help = "limit read operations per second", | |
1971 | },{ | |
57975222 | 1972 | .name = "throttling.iops-write", |
4d454574 PB |
1973 | .type = QEMU_OPT_NUMBER, |
1974 | .help = "limit write operations per second", | |
1975 | },{ | |
57975222 | 1976 | .name = "throttling.bps-total", |
4d454574 PB |
1977 | .type = QEMU_OPT_NUMBER, |
1978 | .help = "limit total bytes per second", | |
1979 | },{ | |
57975222 | 1980 | .name = "throttling.bps-read", |
4d454574 PB |
1981 | .type = QEMU_OPT_NUMBER, |
1982 | .help = "limit read bytes per second", | |
1983 | },{ | |
57975222 | 1984 | .name = "throttling.bps-write", |
4d454574 PB |
1985 | .type = QEMU_OPT_NUMBER, |
1986 | .help = "limit write bytes per second", | |
1987 | },{ | |
1988 | .name = "copy-on-read", | |
1989 | .type = QEMU_OPT_BOOL, | |
1990 | .help = "copy read data from backing file into image file", | |
1991 | },{ | |
1992 | .name = "boot", | |
1993 | .type = QEMU_OPT_BOOL, | |
1994 | .help = "(deprecated, ignored)", | |
1995 | }, | |
1996 | { /* end of list */ } | |
1997 | }, | |
1998 | }; | |
0006383e | 1999 | |
8afaefb8 KW |
2000 | QemuOptsList qemu_old_drive_opts = { |
2001 | .name = "drive", | |
2002 | .head = QTAILQ_HEAD_INITIALIZER(qemu_old_drive_opts.head), | |
2003 | .desc = { | |
2004 | { | |
2005 | .name = "bus", | |
2006 | .type = QEMU_OPT_NUMBER, | |
2007 | .help = "bus number", | |
2008 | },{ | |
2009 | .name = "unit", | |
2010 | .type = QEMU_OPT_NUMBER, | |
2011 | .help = "unit number (i.e. lun for scsi)", | |
2012 | },{ | |
2013 | .name = "if", | |
2014 | .type = QEMU_OPT_STRING, | |
2015 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
2016 | },{ | |
2017 | .name = "index", | |
2018 | .type = QEMU_OPT_NUMBER, | |
2019 | .help = "index number", | |
2020 | },{ | |
2021 | .name = "cyls", | |
2022 | .type = QEMU_OPT_NUMBER, | |
2023 | .help = "number of cylinders (ide disk geometry)", | |
2024 | },{ | |
2025 | .name = "heads", | |
2026 | .type = QEMU_OPT_NUMBER, | |
2027 | .help = "number of heads (ide disk geometry)", | |
2028 | },{ | |
2029 | .name = "secs", | |
2030 | .type = QEMU_OPT_NUMBER, | |
2031 | .help = "number of sectors (ide disk geometry)", | |
2032 | },{ | |
2033 | .name = "trans", | |
2034 | .type = QEMU_OPT_STRING, | |
2035 | .help = "chs translation (auto, lba. none)", | |
2036 | },{ | |
2037 | .name = "media", | |
2038 | .type = QEMU_OPT_STRING, | |
2039 | .help = "media type (disk, cdrom)", | |
2040 | },{ | |
2041 | .name = "snapshot", | |
2042 | .type = QEMU_OPT_BOOL, | |
2043 | .help = "enable/disable snapshot mode", | |
2044 | },{ | |
2045 | .name = "file", | |
2046 | .type = QEMU_OPT_STRING, | |
2047 | .help = "disk image", | |
2048 | },{ | |
2049 | .name = "discard", | |
2050 | .type = QEMU_OPT_STRING, | |
2051 | .help = "discard operation (ignore/off, unmap/on)", | |
2052 | },{ | |
2053 | .name = "cache", | |
2054 | .type = QEMU_OPT_STRING, | |
2055 | .help = "host cache usage (none, writeback, writethrough, " | |
2056 | "directsync, unsafe)", | |
2057 | },{ | |
2058 | .name = "aio", | |
2059 | .type = QEMU_OPT_STRING, | |
2060 | .help = "host AIO implementation (threads, native)", | |
2061 | },{ | |
2062 | .name = "format", | |
2063 | .type = QEMU_OPT_STRING, | |
2064 | .help = "disk format (raw, qcow2, ...)", | |
2065 | },{ | |
2066 | .name = "serial", | |
2067 | .type = QEMU_OPT_STRING, | |
2068 | .help = "disk serial number", | |
2069 | },{ | |
2070 | .name = "rerror", | |
2071 | .type = QEMU_OPT_STRING, | |
2072 | .help = "read error action", | |
2073 | },{ | |
2074 | .name = "werror", | |
2075 | .type = QEMU_OPT_STRING, | |
2076 | .help = "write error action", | |
2077 | },{ | |
2078 | .name = "addr", | |
2079 | .type = QEMU_OPT_STRING, | |
2080 | .help = "pci address (virtio only)", | |
2081 | },{ | |
2082 | .name = "readonly", | |
2083 | .type = QEMU_OPT_BOOL, | |
2084 | .help = "open drive file as read-only", | |
2085 | },{ | |
2086 | .name = "iops", | |
2087 | .type = QEMU_OPT_NUMBER, | |
2088 | .help = "limit total I/O operations per second", | |
2089 | },{ | |
2090 | .name = "iops_rd", | |
2091 | .type = QEMU_OPT_NUMBER, | |
2092 | .help = "limit read operations per second", | |
2093 | },{ | |
2094 | .name = "iops_wr", | |
2095 | .type = QEMU_OPT_NUMBER, | |
2096 | .help = "limit write operations per second", | |
2097 | },{ | |
2098 | .name = "bps", | |
2099 | .type = QEMU_OPT_NUMBER, | |
2100 | .help = "limit total bytes per second", | |
2101 | },{ | |
2102 | .name = "bps_rd", | |
2103 | .type = QEMU_OPT_NUMBER, | |
2104 | .help = "limit read bytes per second", | |
2105 | },{ | |
2106 | .name = "bps_wr", | |
2107 | .type = QEMU_OPT_NUMBER, | |
2108 | .help = "limit write bytes per second", | |
2109 | },{ | |
2110 | .name = "copy-on-read", | |
2111 | .type = QEMU_OPT_BOOL, | |
2112 | .help = "copy read data from backing file into image file", | |
2113 | },{ | |
2114 | .name = "boot", | |
2115 | .type = QEMU_OPT_BOOL, | |
2116 | .help = "(deprecated, ignored)", | |
2117 | }, | |
2118 | { /* end of list */ } | |
2119 | }, | |
2120 | }; | |
2121 | ||
0006383e KW |
2122 | QemuOptsList qemu_drive_opts = { |
2123 | .name = "drive", | |
2124 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2125 | .desc = { | |
492fdc6f KW |
2126 | /* |
2127 | * no elements => accept any params | |
2128 | * validation will happen later | |
2129 | */ | |
0006383e KW |
2130 | { /* end of list */ } |
2131 | }, | |
2132 | }; |