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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) { | |
7780d472 FZ |
490 | if (!ro && bdrv_find_whitelisted_format(buf, !ro)) { |
491 | error_report("'%s' can be only used as read-only device.", buf); | |
492 | } else { | |
493 | error_report("'%s' invalid format", buf); | |
494 | } | |
6db5f5d6 MQ |
495 | return NULL; |
496 | } | |
666daa68 MA |
497 | } |
498 | ||
0563e191 ZYW |
499 | /* disk I/O throttling */ |
500 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = | |
57975222 | 501 | qemu_opt_get_number(opts, "throttling.bps-total", 0); |
0563e191 | 502 | io_limits.bps[BLOCK_IO_LIMIT_READ] = |
57975222 | 503 | qemu_opt_get_number(opts, "throttling.bps-read", 0); |
0563e191 | 504 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = |
57975222 | 505 | qemu_opt_get_number(opts, "throttling.bps-write", 0); |
0563e191 | 506 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL] = |
57975222 | 507 | qemu_opt_get_number(opts, "throttling.iops-total", 0); |
0563e191 | 508 | io_limits.iops[BLOCK_IO_LIMIT_READ] = |
57975222 | 509 | qemu_opt_get_number(opts, "throttling.iops-read", 0); |
0563e191 | 510 | io_limits.iops[BLOCK_IO_LIMIT_WRITE] = |
57975222 | 511 | qemu_opt_get_number(opts, "throttling.iops-write", 0); |
0563e191 | 512 | |
c546194f SH |
513 | if (!do_check_io_limits(&io_limits, &error)) { |
514 | error_report("%s", error_get_pretty(error)); | |
515 | error_free(error); | |
0563e191 ZYW |
516 | return NULL; |
517 | } | |
518 | ||
0d92d17a JK |
519 | if (qemu_opt_get(opts, "boot") != NULL) { |
520 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
521 | "ignored. Future versions will reject this parameter. Please " | |
522 | "update your scripts.\n"); | |
523 | } | |
524 | ||
92aa5c6d | 525 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
526 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
527 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
807105a7 | 528 | error_report("werror is not supported by this bus type"); |
666daa68 MA |
529 | return NULL; |
530 | } | |
531 | ||
532 | on_write_error = parse_block_error_action(buf, 0); | |
533 | if (on_write_error < 0) { | |
534 | return NULL; | |
535 | } | |
536 | } | |
537 | ||
92aa5c6d | 538 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 539 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 540 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 541 | error_report("rerror is not supported by this bus type"); |
666daa68 MA |
542 | return NULL; |
543 | } | |
544 | ||
545 | on_read_error = parse_block_error_action(buf, 1); | |
546 | if (on_read_error < 0) { | |
547 | return NULL; | |
548 | } | |
549 | } | |
550 | ||
551 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
552 | if (type != IF_VIRTIO) { | |
807105a7 | 553 | error_report("addr is not supported by this bus type"); |
666daa68 MA |
554 | return NULL; |
555 | } | |
556 | } | |
557 | ||
558 | /* compute bus and unit according index */ | |
559 | ||
560 | if (index != -1) { | |
561 | if (bus_id != 0 || unit_id != -1) { | |
807105a7 | 562 | error_report("index cannot be used with bus and unit"); |
666daa68 MA |
563 | return NULL; |
564 | } | |
505a7fb1 MA |
565 | bus_id = drive_index_to_bus_id(type, index); |
566 | unit_id = drive_index_to_unit_id(type, index); | |
666daa68 MA |
567 | } |
568 | ||
569 | /* if user doesn't specify a unit_id, | |
570 | * try to find the first free | |
571 | */ | |
572 | ||
573 | if (unit_id == -1) { | |
574 | unit_id = 0; | |
575 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
576 | unit_id++; | |
577 | if (max_devs && unit_id >= max_devs) { | |
578 | unit_id -= max_devs; | |
579 | bus_id++; | |
580 | } | |
581 | } | |
582 | } | |
583 | ||
584 | /* check unit id */ | |
585 | ||
586 | if (max_devs && unit_id >= max_devs) { | |
807105a7 MA |
587 | error_report("unit %d too big (max is %d)", |
588 | unit_id, max_devs - 1); | |
666daa68 MA |
589 | return NULL; |
590 | } | |
591 | ||
592 | /* | |
4e5d9b57 | 593 | * catch multiple definitions |
666daa68 MA |
594 | */ |
595 | ||
596 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
4e5d9b57 MA |
597 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
598 | bus_id, unit_id, index); | |
666daa68 MA |
599 | return NULL; |
600 | } | |
601 | ||
602 | /* init */ | |
603 | ||
7267c094 | 604 | dinfo = g_malloc0(sizeof(*dinfo)); |
666daa68 | 605 | if ((buf = qemu_opts_id(opts)) != NULL) { |
7267c094 | 606 | dinfo->id = g_strdup(buf); |
666daa68 MA |
607 | } else { |
608 | /* no id supplied -> create one */ | |
7267c094 | 609 | dinfo->id = g_malloc0(32); |
666daa68 MA |
610 | if (type == IF_IDE || type == IF_SCSI) |
611 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
612 | if (max_devs) | |
613 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
79d21d5b | 614 | if_name[type], bus_id, mediastr, unit_id); |
666daa68 MA |
615 | else |
616 | snprintf(dinfo->id, 32, "%s%s%i", | |
79d21d5b | 617 | if_name[type], mediastr, unit_id); |
666daa68 MA |
618 | } |
619 | dinfo->bdrv = bdrv_new(dinfo->id); | |
80dd1aae KS |
620 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
621 | dinfo->bdrv->read_only = ro; | |
666daa68 MA |
622 | dinfo->devaddr = devaddr; |
623 | dinfo->type = type; | |
624 | dinfo->bus = bus_id; | |
625 | dinfo->unit = unit_id; | |
317bb412 MA |
626 | dinfo->cyls = cyls; |
627 | dinfo->heads = heads; | |
628 | dinfo->secs = secs; | |
629 | dinfo->trans = translation; | |
0006383e | 630 | dinfo->opts = all_opts; |
84fb3925 | 631 | dinfo->refcount = 1; |
bb44619b KW |
632 | if (serial != NULL) { |
633 | dinfo->serial = g_strdup(serial); | |
634 | } | |
666daa68 MA |
635 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
636 | ||
abd7f68d MA |
637 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
638 | ||
0563e191 ZYW |
639 | /* disk I/O throttling */ |
640 | bdrv_set_io_limits(dinfo->bdrv, &io_limits); | |
641 | ||
666daa68 MA |
642 | switch(type) { |
643 | case IF_IDE: | |
644 | case IF_SCSI: | |
645 | case IF_XEN: | |
646 | case IF_NONE: | |
2b584959 | 647 | dinfo->media_cd = media == MEDIA_CDROM; |
666daa68 MA |
648 | break; |
649 | case IF_SD: | |
666daa68 | 650 | case IF_FLOPPY: |
666daa68 MA |
651 | case IF_PFLASH: |
652 | case IF_MTD: | |
653 | break; | |
654 | case IF_VIRTIO: | |
0006383e | 655 | { |
666daa68 | 656 | /* add virtio block device */ |
0006383e KW |
657 | QemuOpts *devopts; |
658 | devopts = qemu_opts_create_nofail(qemu_find_opts("device")); | |
eeb9c1b5 | 659 | if (arch_type == QEMU_ARCH_S390X) { |
0006383e | 660 | qemu_opt_set(devopts, "driver", "virtio-blk-s390"); |
eeb9c1b5 | 661 | } else { |
0006383e | 662 | qemu_opt_set(devopts, "driver", "virtio-blk-pci"); |
eeb9c1b5 | 663 | } |
0006383e | 664 | qemu_opt_set(devopts, "drive", dinfo->id); |
666daa68 | 665 | if (devaddr) |
0006383e | 666 | qemu_opt_set(devopts, "addr", devaddr); |
666daa68 | 667 | break; |
0006383e | 668 | } |
2292ddae | 669 | default: |
666daa68 MA |
670 | abort(); |
671 | } | |
dd5b0d71 | 672 | if (!file || !*file) { |
74fe54f2 | 673 | if (has_driver_specific_opts) { |
c2ad1b0c KW |
674 | file = NULL; |
675 | } else { | |
676 | return dinfo; | |
677 | } | |
666daa68 MA |
678 | } |
679 | if (snapshot) { | |
680 | /* always use cache=unsafe with snapshot */ | |
681 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
682 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
683 | } | |
684 | ||
fb0490f6 SH |
685 | if (copy_on_read) { |
686 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
687 | } | |
688 | ||
ed9d4205 BC |
689 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
690 | bdrv_flags |= BDRV_O_INCOMING; | |
691 | } | |
692 | ||
666daa68 MA |
693 | if (media == MEDIA_CDROM) { |
694 | /* CDROM is fine for any interface, don't check. */ | |
695 | ro = 1; | |
696 | } else if (ro == 1) { | |
1e9eb78a JJ |
697 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && |
698 | type != IF_NONE && type != IF_PFLASH) { | |
0f227a94 | 699 | error_report("read-only not supported by this bus type"); |
a9ae2bff | 700 | goto err; |
666daa68 MA |
701 | } |
702 | } | |
703 | ||
704 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
705 | ||
04d4abe9 | 706 | if (ro && copy_on_read) { |
0f227a94 | 707 | error_report("warning: disabling copy_on_read on read-only drive"); |
04d4abe9 SH |
708 | } |
709 | ||
74fe54f2 | 710 | QINCREF(bs_opts); |
6db5f5d6 | 711 | ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv); |
0006383e | 712 | |
666daa68 | 713 | if (ret < 0) { |
02582abd SW |
714 | if (ret == -EMEDIUMTYPE) { |
715 | error_report("could not open disk image %s: not in %s format", | |
6db5f5d6 MQ |
716 | file ?: dinfo->id, drv ? drv->format_name : |
717 | qdict_get_str(bs_opts, "driver")); | |
02582abd SW |
718 | } else { |
719 | error_report("could not open disk image %s: %s", | |
c2ad1b0c | 720 | file ?: dinfo->id, strerror(-ret)); |
02582abd | 721 | } |
a9ae2bff | 722 | goto err; |
666daa68 MA |
723 | } |
724 | ||
725 | if (bdrv_key_required(dinfo->bdrv)) | |
726 | autostart = 0; | |
0006383e | 727 | |
74fe54f2 | 728 | QDECREF(bs_opts); |
0006383e KW |
729 | qemu_opts_del(opts); |
730 | ||
666daa68 | 731 | return dinfo; |
a9ae2bff MA |
732 | |
733 | err: | |
0006383e KW |
734 | qemu_opts_del(opts); |
735 | QDECREF(bs_opts); | |
a9ae2bff | 736 | bdrv_delete(dinfo->bdrv); |
7267c094 | 737 | g_free(dinfo->id); |
a9ae2bff | 738 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 739 | g_free(dinfo); |
a9ae2bff | 740 | return NULL; |
666daa68 MA |
741 | } |
742 | ||
57975222 KW |
743 | static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to) |
744 | { | |
745 | const char *value; | |
746 | ||
747 | value = qemu_opt_get(opts, from); | |
748 | if (value) { | |
749 | qemu_opt_set(opts, to, value); | |
750 | qemu_opt_unset(opts, from); | |
751 | } | |
752 | } | |
753 | ||
754 | DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type) | |
755 | { | |
29c4e2b5 KW |
756 | const char *value; |
757 | ||
8afaefb8 KW |
758 | /* |
759 | * Check that only old options are used by copying into a QemuOpts with | |
760 | * stricter checks. Going through a QDict seems to be the easiest way to | |
761 | * achieve this... | |
762 | */ | |
763 | QemuOpts* check_opts; | |
764 | QDict *qdict; | |
765 | Error *local_err = NULL; | |
766 | ||
767 | qdict = qemu_opts_to_qdict(all_opts, NULL); | |
768 | check_opts = qemu_opts_from_qdict(&qemu_old_drive_opts, qdict, &local_err); | |
769 | QDECREF(qdict); | |
770 | ||
771 | if (error_is_set(&local_err)) { | |
772 | qerror_report_err(local_err); | |
773 | error_free(local_err); | |
774 | return NULL; | |
775 | } | |
776 | qemu_opts_del(check_opts); | |
777 | ||
57975222 KW |
778 | /* Change legacy command line options into QMP ones */ |
779 | qemu_opt_rename(all_opts, "iops", "throttling.iops-total"); | |
780 | qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read"); | |
781 | qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write"); | |
782 | ||
783 | qemu_opt_rename(all_opts, "bps", "throttling.bps-total"); | |
784 | qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read"); | |
785 | qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write"); | |
786 | ||
0f227a94 KW |
787 | qemu_opt_rename(all_opts, "readonly", "read-only"); |
788 | ||
29c4e2b5 KW |
789 | value = qemu_opt_get(all_opts, "cache"); |
790 | if (value) { | |
791 | int flags = 0; | |
792 | ||
793 | if (bdrv_parse_cache_flags(value, &flags) != 0) { | |
794 | error_report("invalid cache option"); | |
795 | return NULL; | |
796 | } | |
797 | ||
798 | /* Specific options take precedence */ | |
799 | if (!qemu_opt_get(all_opts, "cache.writeback")) { | |
800 | qemu_opt_set_bool(all_opts, "cache.writeback", | |
801 | !!(flags & BDRV_O_CACHE_WB)); | |
802 | } | |
803 | if (!qemu_opt_get(all_opts, "cache.direct")) { | |
804 | qemu_opt_set_bool(all_opts, "cache.direct", | |
805 | !!(flags & BDRV_O_NOCACHE)); | |
806 | } | |
807 | if (!qemu_opt_get(all_opts, "cache.no-flush")) { | |
808 | qemu_opt_set_bool(all_opts, "cache.no-flush", | |
809 | !!(flags & BDRV_O_NO_FLUSH)); | |
810 | } | |
811 | qemu_opt_unset(all_opts, "cache"); | |
812 | } | |
813 | ||
57975222 KW |
814 | return blockdev_init(all_opts, block_default_type); |
815 | } | |
816 | ||
666daa68 MA |
817 | void do_commit(Monitor *mon, const QDict *qdict) |
818 | { | |
666daa68 | 819 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 820 | BlockDriverState *bs; |
e8877497 | 821 | int ret; |
666daa68 | 822 | |
6ab4b5ab | 823 | if (!strcmp(device, "all")) { |
e8877497 | 824 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
825 | } else { |
826 | bs = bdrv_find(device); | |
ac59eb95 | 827 | if (!bs) { |
58513bde | 828 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 829 | return; |
6ab4b5ab | 830 | } |
2d3735d3 | 831 | ret = bdrv_commit(bs); |
58513bde JC |
832 | } |
833 | if (ret < 0) { | |
834 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
835 | strerror(-ret)); | |
666daa68 MA |
836 | } |
837 | } | |
838 | ||
6cc2a415 PB |
839 | static void blockdev_do_action(int kind, void *data, Error **errp) |
840 | { | |
c8a83e85 KW |
841 | TransactionAction action; |
842 | TransactionActionList list; | |
6cc2a415 PB |
843 | |
844 | action.kind = kind; | |
845 | action.data = data; | |
846 | list.value = &action; | |
847 | list.next = NULL; | |
848 | qmp_transaction(&list, errp); | |
849 | } | |
850 | ||
6106e249 LC |
851 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
852 | bool has_format, const char *format, | |
6cc2a415 | 853 | bool has_mode, enum NewImageMode mode, |
6106e249 | 854 | Error **errp) |
f8882568 | 855 | { |
6cc2a415 PB |
856 | BlockdevSnapshot snapshot = { |
857 | .device = (char *) device, | |
858 | .snapshot_file = (char *) snapshot_file, | |
859 | .has_format = has_format, | |
860 | .format = (char *) format, | |
861 | .has_mode = has_mode, | |
862 | .mode = mode, | |
863 | }; | |
c8a83e85 KW |
864 | blockdev_do_action(TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, |
865 | &snapshot, errp); | |
f8882568 JS |
866 | } |
867 | ||
8802d1fd JC |
868 | |
869 | /* New and old BlockDriverState structs for group snapshots */ | |
ba0c86a3 | 870 | |
ba5d6ab6 | 871 | typedef struct BlkTransactionState BlkTransactionState; |
ba0c86a3 WX |
872 | |
873 | /* Only prepare() may fail. In a single transaction, only one of commit() or | |
874 | abort() will be called, clean() will always be called if it present. */ | |
875 | typedef struct BdrvActionOps { | |
876 | /* Size of state struct, in bytes. */ | |
877 | size_t instance_size; | |
878 | /* Prepare the work, must NOT be NULL. */ | |
ba5d6ab6 | 879 | void (*prepare)(BlkTransactionState *common, Error **errp); |
f9ea81e8 | 880 | /* Commit the changes, can be NULL. */ |
ba5d6ab6 | 881 | void (*commit)(BlkTransactionState *common); |
ba0c86a3 | 882 | /* Abort the changes on fail, can be NULL. */ |
ba5d6ab6 | 883 | void (*abort)(BlkTransactionState *common); |
ba0c86a3 | 884 | /* Clean up resource in the end, can be NULL. */ |
ba5d6ab6 | 885 | void (*clean)(BlkTransactionState *common); |
ba0c86a3 WX |
886 | } BdrvActionOps; |
887 | ||
888 | /* | |
889 | * This structure must be arranged as first member in child type, assuming | |
890 | * that compiler will also arrange it to the same address with parent instance. | |
891 | * Later it will be used in free(). | |
892 | */ | |
ba5d6ab6 | 893 | struct BlkTransactionState { |
c8a83e85 | 894 | TransactionAction *action; |
ba0c86a3 | 895 | const BdrvActionOps *ops; |
ba5d6ab6 | 896 | QSIMPLEQ_ENTRY(BlkTransactionState) entry; |
ba0c86a3 WX |
897 | }; |
898 | ||
899 | /* external snapshot private data */ | |
ba5d6ab6 SH |
900 | typedef struct ExternalSnapshotState { |
901 | BlkTransactionState common; | |
8802d1fd JC |
902 | BlockDriverState *old_bs; |
903 | BlockDriverState *new_bs; | |
ba5d6ab6 | 904 | } ExternalSnapshotState; |
8802d1fd | 905 | |
ba5d6ab6 | 906 | static void external_snapshot_prepare(BlkTransactionState *common, |
9b9877ee WX |
907 | Error **errp) |
908 | { | |
9b9877ee WX |
909 | BlockDriver *drv; |
910 | int flags, ret; | |
911 | Error *local_err = NULL; | |
e2a31e87 WX |
912 | const char *device; |
913 | const char *new_image_file; | |
914 | const char *format = "qcow2"; | |
915 | enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
ba5d6ab6 SH |
916 | ExternalSnapshotState *state = |
917 | DO_UPCAST(ExternalSnapshotState, common, common); | |
c8a83e85 | 918 | TransactionAction *action = common->action; |
9b9877ee | 919 | |
e2a31e87 | 920 | /* get parameters */ |
c8a83e85 | 921 | g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC); |
e2a31e87 WX |
922 | |
923 | device = action->blockdev_snapshot_sync->device; | |
924 | new_image_file = action->blockdev_snapshot_sync->snapshot_file; | |
925 | if (action->blockdev_snapshot_sync->has_format) { | |
926 | format = action->blockdev_snapshot_sync->format; | |
927 | } | |
928 | if (action->blockdev_snapshot_sync->has_mode) { | |
929 | mode = action->blockdev_snapshot_sync->mode; | |
930 | } | |
931 | ||
932 | /* start processing */ | |
9b9877ee WX |
933 | drv = bdrv_find_format(format); |
934 | if (!drv) { | |
935 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
936 | return; | |
937 | } | |
938 | ||
ba5d6ab6 SH |
939 | state->old_bs = bdrv_find(device); |
940 | if (!state->old_bs) { | |
9b9877ee WX |
941 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
942 | return; | |
943 | } | |
944 | ||
ba5d6ab6 | 945 | if (!bdrv_is_inserted(state->old_bs)) { |
9b9877ee WX |
946 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
947 | return; | |
948 | } | |
949 | ||
ba5d6ab6 | 950 | if (bdrv_in_use(state->old_bs)) { |
9b9877ee WX |
951 | error_set(errp, QERR_DEVICE_IN_USE, device); |
952 | return; | |
953 | } | |
954 | ||
ba5d6ab6 SH |
955 | if (!bdrv_is_read_only(state->old_bs)) { |
956 | if (bdrv_flush(state->old_bs)) { | |
9b9877ee WX |
957 | error_set(errp, QERR_IO_ERROR); |
958 | return; | |
959 | } | |
960 | } | |
961 | ||
ba5d6ab6 | 962 | flags = state->old_bs->open_flags; |
9b9877ee | 963 | |
9b9877ee WX |
964 | /* create new image w/backing file */ |
965 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
966 | bdrv_img_create(new_image_file, format, | |
ba5d6ab6 SH |
967 | state->old_bs->filename, |
968 | state->old_bs->drv->format_name, | |
9b9877ee WX |
969 | NULL, -1, flags, &local_err, false); |
970 | if (error_is_set(&local_err)) { | |
971 | error_propagate(errp, local_err); | |
972 | return; | |
973 | } | |
974 | } | |
975 | ||
976 | /* We will manually add the backing_hd field to the bs later */ | |
ba5d6ab6 | 977 | state->new_bs = bdrv_new(""); |
9b9877ee WX |
978 | /* TODO Inherit bs->options or only take explicit options with an |
979 | * extended QMP command? */ | |
ba5d6ab6 | 980 | ret = bdrv_open(state->new_bs, new_image_file, NULL, |
9b9877ee WX |
981 | flags | BDRV_O_NO_BACKING, drv); |
982 | if (ret != 0) { | |
0eef407c | 983 | error_setg_file_open(errp, -ret, new_image_file); |
9b9877ee WX |
984 | } |
985 | } | |
986 | ||
ba5d6ab6 | 987 | static void external_snapshot_commit(BlkTransactionState *common) |
3b0047e8 | 988 | { |
ba5d6ab6 SH |
989 | ExternalSnapshotState *state = |
990 | DO_UPCAST(ExternalSnapshotState, common, common); | |
ba0c86a3 | 991 | |
ba5d6ab6 SH |
992 | /* This removes our old bs and adds the new bs */ |
993 | bdrv_append(state->new_bs, state->old_bs); | |
3b0047e8 WX |
994 | /* We don't need (or want) to use the transactional |
995 | * bdrv_reopen_multiple() across all the entries at once, because we | |
996 | * don't want to abort all of them if one of them fails the reopen */ | |
ba5d6ab6 | 997 | bdrv_reopen(state->new_bs, state->new_bs->open_flags & ~BDRV_O_RDWR, |
3b0047e8 WX |
998 | NULL); |
999 | } | |
1000 | ||
ba5d6ab6 | 1001 | static void external_snapshot_abort(BlkTransactionState *common) |
96b86bf7 | 1002 | { |
ba5d6ab6 SH |
1003 | ExternalSnapshotState *state = |
1004 | DO_UPCAST(ExternalSnapshotState, common, common); | |
1005 | if (state->new_bs) { | |
1006 | bdrv_delete(state->new_bs); | |
96b86bf7 WX |
1007 | } |
1008 | } | |
1009 | ||
3037f364 SH |
1010 | typedef struct DriveBackupState { |
1011 | BlkTransactionState common; | |
1012 | BlockDriverState *bs; | |
1013 | BlockJob *job; | |
1014 | } DriveBackupState; | |
1015 | ||
1016 | static void drive_backup_prepare(BlkTransactionState *common, Error **errp) | |
1017 | { | |
1018 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1019 | DriveBackup *backup; | |
1020 | Error *local_err = NULL; | |
1021 | ||
1022 | assert(common->action->kind == TRANSACTION_ACTION_KIND_DRIVE_BACKUP); | |
1023 | backup = common->action->drive_backup; | |
1024 | ||
1025 | qmp_drive_backup(backup->device, backup->target, | |
1026 | backup->has_format, backup->format, | |
b53169ea | 1027 | backup->sync, |
3037f364 SH |
1028 | backup->has_mode, backup->mode, |
1029 | backup->has_speed, backup->speed, | |
1030 | backup->has_on_source_error, backup->on_source_error, | |
1031 | backup->has_on_target_error, backup->on_target_error, | |
1032 | &local_err); | |
1033 | if (error_is_set(&local_err)) { | |
1034 | error_propagate(errp, local_err); | |
1035 | state->bs = NULL; | |
1036 | state->job = NULL; | |
1037 | return; | |
1038 | } | |
1039 | ||
1040 | state->bs = bdrv_find(backup->device); | |
1041 | state->job = state->bs->job; | |
1042 | } | |
1043 | ||
1044 | static void drive_backup_abort(BlkTransactionState *common) | |
1045 | { | |
1046 | DriveBackupState *state = DO_UPCAST(DriveBackupState, common, common); | |
1047 | BlockDriverState *bs = state->bs; | |
1048 | ||
1049 | /* Only cancel if it's the job we started */ | |
1050 | if (bs && bs->job && bs->job == state->job) { | |
1051 | block_job_cancel_sync(bs->job); | |
1052 | } | |
1053 | } | |
1054 | ||
78b18b78 SH |
1055 | static void abort_prepare(BlkTransactionState *common, Error **errp) |
1056 | { | |
1057 | error_setg(errp, "Transaction aborted using Abort action"); | |
1058 | } | |
1059 | ||
1060 | static void abort_commit(BlkTransactionState *common) | |
1061 | { | |
dfc6f865 | 1062 | g_assert_not_reached(); /* this action never succeeds */ |
78b18b78 SH |
1063 | } |
1064 | ||
ba0c86a3 | 1065 | static const BdrvActionOps actions[] = { |
c8a83e85 | 1066 | [TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC] = { |
ba5d6ab6 | 1067 | .instance_size = sizeof(ExternalSnapshotState), |
ba0c86a3 WX |
1068 | .prepare = external_snapshot_prepare, |
1069 | .commit = external_snapshot_commit, | |
1070 | .abort = external_snapshot_abort, | |
1071 | }, | |
3037f364 SH |
1072 | [TRANSACTION_ACTION_KIND_DRIVE_BACKUP] = { |
1073 | .instance_size = sizeof(DriveBackupState), | |
1074 | .prepare = drive_backup_prepare, | |
1075 | .abort = drive_backup_abort, | |
1076 | }, | |
78b18b78 SH |
1077 | [TRANSACTION_ACTION_KIND_ABORT] = { |
1078 | .instance_size = sizeof(BlkTransactionState), | |
1079 | .prepare = abort_prepare, | |
1080 | .commit = abort_commit, | |
1081 | }, | |
ba0c86a3 WX |
1082 | }; |
1083 | ||
8802d1fd JC |
1084 | /* |
1085 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
1086 | * then we do not pivot any of the devices in the group, and abandon the | |
1087 | * snapshots | |
1088 | */ | |
c8a83e85 | 1089 | void qmp_transaction(TransactionActionList *dev_list, Error **errp) |
8802d1fd | 1090 | { |
c8a83e85 | 1091 | TransactionActionList *dev_entry = dev_list; |
ba5d6ab6 | 1092 | BlkTransactionState *state, *next; |
43e17041 | 1093 | Error *local_err = NULL; |
8802d1fd | 1094 | |
ba5d6ab6 | 1095 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionState) snap_bdrv_states; |
8802d1fd JC |
1096 | QSIMPLEQ_INIT(&snap_bdrv_states); |
1097 | ||
1098 | /* drain all i/o before any snapshots */ | |
1099 | bdrv_drain_all(); | |
1100 | ||
1101 | /* We don't do anything in this loop that commits us to the snapshot */ | |
1102 | while (NULL != dev_entry) { | |
c8a83e85 | 1103 | TransactionAction *dev_info = NULL; |
ba0c86a3 | 1104 | const BdrvActionOps *ops; |
52e7c241 | 1105 | |
8802d1fd JC |
1106 | dev_info = dev_entry->value; |
1107 | dev_entry = dev_entry->next; | |
1108 | ||
ba0c86a3 WX |
1109 | assert(dev_info->kind < ARRAY_SIZE(actions)); |
1110 | ||
1111 | ops = &actions[dev_info->kind]; | |
ba5d6ab6 SH |
1112 | state = g_malloc0(ops->instance_size); |
1113 | state->ops = ops; | |
1114 | state->action = dev_info; | |
1115 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry); | |
8802d1fd | 1116 | |
ba5d6ab6 | 1117 | state->ops->prepare(state, &local_err); |
ba0c86a3 WX |
1118 | if (error_is_set(&local_err)) { |
1119 | error_propagate(errp, local_err); | |
1120 | goto delete_and_fail; | |
8802d1fd | 1121 | } |
8802d1fd JC |
1122 | } |
1123 | ||
ba5d6ab6 | 1124 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
f9ea81e8 SH |
1125 | if (state->ops->commit) { |
1126 | state->ops->commit(state); | |
1127 | } | |
8802d1fd JC |
1128 | } |
1129 | ||
1130 | /* success */ | |
1131 | goto exit; | |
1132 | ||
1133 | delete_and_fail: | |
1134 | /* | |
1135 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
1136 | * the original bs for all images | |
1137 | */ | |
ba5d6ab6 SH |
1138 | QSIMPLEQ_FOREACH(state, &snap_bdrv_states, entry) { |
1139 | if (state->ops->abort) { | |
1140 | state->ops->abort(state); | |
ba0c86a3 | 1141 | } |
8802d1fd JC |
1142 | } |
1143 | exit: | |
ba5d6ab6 SH |
1144 | QSIMPLEQ_FOREACH_SAFE(state, &snap_bdrv_states, entry, next) { |
1145 | if (state->ops->clean) { | |
1146 | state->ops->clean(state); | |
ba0c86a3 | 1147 | } |
ba5d6ab6 | 1148 | g_free(state); |
8802d1fd | 1149 | } |
8802d1fd JC |
1150 | } |
1151 | ||
1152 | ||
92d48558 | 1153 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 1154 | { |
2d3735d3 SH |
1155 | if (bdrv_in_use(bs)) { |
1156 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
1157 | return; | |
1158 | } | |
2c6942fa | 1159 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
1160 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
1161 | return; | |
ea8f942f | 1162 | } |
92d48558 | 1163 | |
025ccaa7 PB |
1164 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
1165 | bdrv_dev_eject_request(bs, force); | |
1166 | if (!force) { | |
92d48558 LC |
1167 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
1168 | return; | |
025ccaa7 | 1169 | } |
666daa68 | 1170 | } |
92d48558 | 1171 | |
3b5276b5 | 1172 | bdrv_close(bs); |
666daa68 MA |
1173 | } |
1174 | ||
c245b6a3 | 1175 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
1176 | { |
1177 | BlockDriverState *bs; | |
666daa68 | 1178 | |
c245b6a3 | 1179 | bs = bdrv_find(device); |
666daa68 | 1180 | if (!bs) { |
c245b6a3 LC |
1181 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1182 | return; | |
92d48558 LC |
1183 | } |
1184 | ||
c245b6a3 | 1185 | eject_device(bs, force, errp); |
666daa68 MA |
1186 | } |
1187 | ||
a4dea8a9 | 1188 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
1189 | { |
1190 | BlockDriverState *bs; | |
1191 | int err; | |
1192 | ||
a4dea8a9 | 1193 | bs = bdrv_find(device); |
666daa68 | 1194 | if (!bs) { |
a4dea8a9 LC |
1195 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1196 | return; | |
666daa68 MA |
1197 | } |
1198 | ||
a4dea8a9 | 1199 | err = bdrv_set_key(bs, password); |
666daa68 | 1200 | if (err == -EINVAL) { |
a4dea8a9 LC |
1201 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
1202 | return; | |
666daa68 | 1203 | } else if (err < 0) { |
a4dea8a9 LC |
1204 | error_set(errp, QERR_INVALID_PASSWORD); |
1205 | return; | |
666daa68 | 1206 | } |
666daa68 MA |
1207 | } |
1208 | ||
333a96ec LC |
1209 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
1210 | int bdrv_flags, BlockDriver *drv, | |
1211 | const char *password, Error **errp) | |
1212 | { | |
0eef407c LC |
1213 | int ret; |
1214 | ||
1215 | ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv); | |
1216 | if (ret < 0) { | |
1217 | error_setg_file_open(errp, -ret, filename); | |
333a96ec LC |
1218 | return; |
1219 | } | |
1220 | ||
1221 | if (bdrv_key_required(bs)) { | |
1222 | if (password) { | |
1223 | if (bdrv_set_key(bs, password) < 0) { | |
1224 | error_set(errp, QERR_INVALID_PASSWORD); | |
1225 | } | |
1226 | } else { | |
1227 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
1228 | bdrv_get_encrypted_filename(bs)); | |
1229 | } | |
1230 | } else if (password) { | |
1231 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | void qmp_change_blockdev(const char *device, const char *filename, | |
1236 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
1237 | { |
1238 | BlockDriverState *bs; | |
1239 | BlockDriver *drv = NULL; | |
1240 | int bdrv_flags; | |
92d48558 | 1241 | Error *err = NULL; |
666daa68 MA |
1242 | |
1243 | bs = bdrv_find(device); | |
1244 | if (!bs) { | |
333a96ec LC |
1245 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1246 | return; | |
666daa68 | 1247 | } |
333a96ec LC |
1248 | |
1249 | if (format) { | |
b64ec4e4 | 1250 | drv = bdrv_find_whitelisted_format(format, bs->read_only); |
666daa68 | 1251 | if (!drv) { |
333a96ec LC |
1252 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
1253 | return; | |
666daa68 MA |
1254 | } |
1255 | } | |
333a96ec | 1256 | |
92d48558 LC |
1257 | eject_device(bs, 0, &err); |
1258 | if (error_is_set(&err)) { | |
333a96ec LC |
1259 | error_propagate(errp, err); |
1260 | return; | |
666daa68 | 1261 | } |
333a96ec | 1262 | |
528f7663 | 1263 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 1264 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
1265 | |
1266 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 1267 | } |
9063f814 | 1268 | |
727f005e | 1269 | /* throttling disk I/O limits */ |
80047da5 LC |
1270 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
1271 | int64_t bps_wr, int64_t iops, int64_t iops_rd, | |
1272 | int64_t iops_wr, Error **errp) | |
727f005e ZYW |
1273 | { |
1274 | BlockIOLimit io_limits; | |
727f005e ZYW |
1275 | BlockDriverState *bs; |
1276 | ||
80047da5 | 1277 | bs = bdrv_find(device); |
727f005e | 1278 | if (!bs) { |
80047da5 LC |
1279 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1280 | return; | |
727f005e ZYW |
1281 | } |
1282 | ||
80047da5 LC |
1283 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = bps; |
1284 | io_limits.bps[BLOCK_IO_LIMIT_READ] = bps_rd; | |
1285 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = bps_wr; | |
1286 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL]= iops; | |
1287 | io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd; | |
1288 | io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr; | |
727f005e | 1289 | |
c546194f | 1290 | if (!do_check_io_limits(&io_limits, errp)) { |
80047da5 | 1291 | return; |
727f005e ZYW |
1292 | } |
1293 | ||
1294 | bs->io_limits = io_limits; | |
727f005e ZYW |
1295 | |
1296 | if (!bs->io_limits_enabled && bdrv_io_limits_enabled(bs)) { | |
1297 | bdrv_io_limits_enable(bs); | |
1298 | } else if (bs->io_limits_enabled && !bdrv_io_limits_enabled(bs)) { | |
1299 | bdrv_io_limits_disable(bs); | |
1300 | } else { | |
1301 | if (bs->block_timer) { | |
1302 | qemu_mod_timer(bs->block_timer, qemu_get_clock_ns(vm_clock)); | |
1303 | } | |
1304 | } | |
727f005e ZYW |
1305 | } |
1306 | ||
9063f814 RH |
1307 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1308 | { | |
1309 | const char *id = qdict_get_str(qdict, "id"); | |
1310 | BlockDriverState *bs; | |
9063f814 RH |
1311 | |
1312 | bs = bdrv_find(id); | |
1313 | if (!bs) { | |
1314 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1315 | return -1; | |
1316 | } | |
8591675f MT |
1317 | if (bdrv_in_use(bs)) { |
1318 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1319 | return -1; | |
1320 | } | |
9063f814 RH |
1321 | |
1322 | /* quiesce block driver; prevent further io */ | |
922453bc | 1323 | bdrv_drain_all(); |
9063f814 RH |
1324 | bdrv_flush(bs); |
1325 | bdrv_close(bs); | |
1326 | ||
fa879d62 | 1327 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1328 | * then we need to make the drive anonymous until the device |
1329 | * can be removed. If this is a drive with no device backing | |
1330 | * then we can just get rid of the block driver state right here. | |
1331 | */ | |
fa879d62 | 1332 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 | 1333 | bdrv_make_anon(bs); |
293c51a6 SH |
1334 | |
1335 | /* Further I/O must not pause the guest */ | |
1336 | bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT, | |
1337 | BLOCKDEV_ON_ERROR_REPORT); | |
d22b2f41 RH |
1338 | } else { |
1339 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1340 | } |
1341 | ||
9063f814 RH |
1342 | return 0; |
1343 | } | |
6d4a2b3a | 1344 | |
5e7caacb | 1345 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1346 | { |
6d4a2b3a | 1347 | BlockDriverState *bs; |
8732901e | 1348 | int ret; |
6d4a2b3a CH |
1349 | |
1350 | bs = bdrv_find(device); | |
1351 | if (!bs) { | |
5e7caacb LC |
1352 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1353 | return; | |
6d4a2b3a CH |
1354 | } |
1355 | ||
1356 | if (size < 0) { | |
939a1cc3 | 1357 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1358 | return; |
6d4a2b3a CH |
1359 | } |
1360 | ||
92b7a08d PL |
1361 | /* complete all in-flight operations before resizing the device */ |
1362 | bdrv_drain_all(); | |
1363 | ||
8732901e KW |
1364 | ret = bdrv_truncate(bs, size); |
1365 | switch (ret) { | |
939a1cc3 SH |
1366 | case 0: |
1367 | break; | |
1368 | case -ENOMEDIUM: | |
1369 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1370 | break; | |
1371 | case -ENOTSUP: | |
1372 | error_set(errp, QERR_UNSUPPORTED); | |
1373 | break; | |
1374 | case -EACCES: | |
1375 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1376 | break; | |
1377 | case -EBUSY: | |
1378 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1379 | break; | |
1380 | default: | |
8732901e | 1381 | error_setg_errno(errp, -ret, "Could not resize"); |
939a1cc3 | 1382 | break; |
6d4a2b3a | 1383 | } |
6d4a2b3a | 1384 | } |
12bd451f | 1385 | |
9abf2dba | 1386 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1387 | { |
1388 | BlockDriverState *bs = opaque; | |
1389 | QObject *obj; | |
1390 | ||
9abf2dba | 1391 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1392 | |
1393 | assert(bs->job); | |
1394 | obj = qobject_from_block_job(bs->job); | |
1395 | if (ret < 0) { | |
1396 | QDict *dict = qobject_to_qdict(obj); | |
1397 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1398 | } | |
1399 | ||
370521a1 SH |
1400 | if (block_job_is_cancelled(bs->job)) { |
1401 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1402 | } else { | |
1403 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1404 | } | |
12bd451f | 1405 | qobject_decref(obj); |
aa398a5c SH |
1406 | |
1407 | drive_put_ref_bh_schedule(drive_get_by_blockdev(bs)); | |
12bd451f SH |
1408 | } |
1409 | ||
1410 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1411 | const char *base, bool has_speed, int64_t speed, |
1412 | bool has_on_error, BlockdevOnError on_error, | |
1413 | Error **errp) | |
12bd451f SH |
1414 | { |
1415 | BlockDriverState *bs; | |
c8c3080f | 1416 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1417 | Error *local_err = NULL; |
12bd451f | 1418 | |
1d809098 PB |
1419 | if (!has_on_error) { |
1420 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1421 | } | |
1422 | ||
12bd451f SH |
1423 | bs = bdrv_find(device); |
1424 | if (!bs) { | |
1425 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1426 | return; | |
1427 | } | |
1428 | ||
12bd451f | 1429 | if (base) { |
c8c3080f MT |
1430 | base_bs = bdrv_find_backing_image(bs, base); |
1431 | if (base_bs == NULL) { | |
1432 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1433 | return; | |
1434 | } | |
12bd451f SH |
1435 | } |
1436 | ||
c83c66c3 | 1437 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1438 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1439 | if (error_is_set(&local_err)) { |
1440 | error_propagate(errp, local_err); | |
1441 | return; | |
12bd451f SH |
1442 | } |
1443 | ||
aa398a5c SH |
1444 | /* Grab a reference so hotplug does not delete the BlockDriverState from |
1445 | * underneath us. | |
1446 | */ | |
1447 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1448 | ||
12bd451f SH |
1449 | trace_qmp_block_stream(bs, bs->job); |
1450 | } | |
2d47c6e9 | 1451 | |
ed61fc10 JC |
1452 | void qmp_block_commit(const char *device, |
1453 | bool has_base, const char *base, const char *top, | |
1454 | bool has_speed, int64_t speed, | |
1455 | Error **errp) | |
1456 | { | |
1457 | BlockDriverState *bs; | |
1458 | BlockDriverState *base_bs, *top_bs; | |
1459 | Error *local_err = NULL; | |
1460 | /* This will be part of the QMP command, if/when the | |
1461 | * BlockdevOnError change for blkmirror makes it in | |
1462 | */ | |
92aa5c6d | 1463 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1464 | |
1465 | /* drain all i/o before commits */ | |
1466 | bdrv_drain_all(); | |
1467 | ||
1468 | bs = bdrv_find(device); | |
1469 | if (!bs) { | |
1470 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1471 | return; | |
1472 | } | |
ed61fc10 JC |
1473 | |
1474 | /* default top_bs is the active layer */ | |
1475 | top_bs = bs; | |
1476 | ||
1477 | if (top) { | |
1478 | if (strcmp(bs->filename, top) != 0) { | |
1479 | top_bs = bdrv_find_backing_image(bs, top); | |
1480 | } | |
1481 | } | |
1482 | ||
1483 | if (top_bs == NULL) { | |
1484 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1485 | return; | |
1486 | } | |
1487 | ||
d5208c45 JC |
1488 | if (has_base && base) { |
1489 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1490 | } else { | |
1491 | base_bs = bdrv_find_base(top_bs); | |
1492 | } | |
1493 | ||
1494 | if (base_bs == NULL) { | |
1495 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1496 | return; | |
1497 | } | |
1498 | ||
ed61fc10 JC |
1499 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1500 | &local_err); | |
1501 | if (local_err != NULL) { | |
1502 | error_propagate(errp, local_err); | |
1503 | return; | |
1504 | } | |
1505 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1506 | * underneath us. | |
1507 | */ | |
1508 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1509 | } | |
1510 | ||
99a9addf SH |
1511 | void qmp_drive_backup(const char *device, const char *target, |
1512 | bool has_format, const char *format, | |
b53169ea | 1513 | enum MirrorSyncMode sync, |
99a9addf SH |
1514 | bool has_mode, enum NewImageMode mode, |
1515 | bool has_speed, int64_t speed, | |
1516 | bool has_on_source_error, BlockdevOnError on_source_error, | |
1517 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1518 | Error **errp) | |
1519 | { | |
1520 | BlockDriverState *bs; | |
1521 | BlockDriverState *target_bs; | |
fc5d3f84 | 1522 | BlockDriverState *source = NULL; |
99a9addf SH |
1523 | BlockDriver *drv = NULL; |
1524 | Error *local_err = NULL; | |
1525 | int flags; | |
1526 | int64_t size; | |
1527 | int ret; | |
1528 | ||
1529 | if (!has_speed) { | |
1530 | speed = 0; | |
1531 | } | |
1532 | if (!has_on_source_error) { | |
1533 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1534 | } | |
1535 | if (!has_on_target_error) { | |
1536 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1537 | } | |
1538 | if (!has_mode) { | |
1539 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1540 | } | |
1541 | ||
1542 | bs = bdrv_find(device); | |
1543 | if (!bs) { | |
1544 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1545 | return; | |
1546 | } | |
1547 | ||
1548 | if (!bdrv_is_inserted(bs)) { | |
1549 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1550 | return; | |
1551 | } | |
1552 | ||
1553 | if (!has_format) { | |
1554 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1555 | } | |
1556 | if (format) { | |
1557 | drv = bdrv_find_format(format); | |
1558 | if (!drv) { | |
1559 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1560 | return; | |
1561 | } | |
1562 | } | |
1563 | ||
1564 | if (bdrv_in_use(bs)) { | |
1565 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1566 | return; | |
1567 | } | |
1568 | ||
1569 | flags = bs->open_flags | BDRV_O_RDWR; | |
1570 | ||
fc5d3f84 IM |
1571 | /* See if we have a backing HD we can use to create our new image |
1572 | * on top of. */ | |
1573 | if (sync == MIRROR_SYNC_MODE_TOP) { | |
1574 | source = bs->backing_hd; | |
1575 | if (!source) { | |
1576 | sync = MIRROR_SYNC_MODE_FULL; | |
1577 | } | |
1578 | } | |
1579 | if (sync == MIRROR_SYNC_MODE_NONE) { | |
1580 | source = bs; | |
1581 | } | |
1582 | ||
99a9addf SH |
1583 | size = bdrv_getlength(bs); |
1584 | if (size < 0) { | |
1585 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1586 | return; | |
1587 | } | |
1588 | ||
1589 | if (mode != NEW_IMAGE_MODE_EXISTING) { | |
1590 | assert(format && drv); | |
fc5d3f84 IM |
1591 | if (source) { |
1592 | bdrv_img_create(target, format, source->filename, | |
1593 | source->drv->format_name, NULL, | |
1594 | size, flags, &local_err, false); | |
1595 | } else { | |
1596 | bdrv_img_create(target, format, NULL, NULL, NULL, | |
1597 | size, flags, &local_err, false); | |
1598 | } | |
99a9addf SH |
1599 | } |
1600 | ||
1601 | if (error_is_set(&local_err)) { | |
1602 | error_propagate(errp, local_err); | |
1603 | return; | |
1604 | } | |
1605 | ||
1606 | target_bs = bdrv_new(""); | |
1607 | ret = bdrv_open(target_bs, target, NULL, flags, drv); | |
1608 | if (ret < 0) { | |
1609 | bdrv_delete(target_bs); | |
1610 | error_setg_file_open(errp, -ret, target); | |
1611 | return; | |
1612 | } | |
1613 | ||
fc5d3f84 | 1614 | backup_start(bs, target_bs, speed, sync, on_source_error, on_target_error, |
99a9addf SH |
1615 | block_job_cb, bs, &local_err); |
1616 | if (local_err != NULL) { | |
1617 | bdrv_delete(target_bs); | |
1618 | error_propagate(errp, local_err); | |
1619 | return; | |
1620 | } | |
1621 | ||
1622 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1623 | * underneath us. | |
1624 | */ | |
1625 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1626 | } | |
1627 | ||
08e4ed6c PB |
1628 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1629 | ||
d9b902db PB |
1630 | void qmp_drive_mirror(const char *device, const char *target, |
1631 | bool has_format, const char *format, | |
1632 | enum MirrorSyncMode sync, | |
1633 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1634 | bool has_speed, int64_t speed, |
eee13dfe | 1635 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1636 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1637 | bool has_on_source_error, BlockdevOnError on_source_error, |
1638 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1639 | Error **errp) | |
d9b902db | 1640 | { |
d9b902db PB |
1641 | BlockDriverState *bs; |
1642 | BlockDriverState *source, *target_bs; | |
d9b902db PB |
1643 | BlockDriver *drv = NULL; |
1644 | Error *local_err = NULL; | |
1645 | int flags; | |
ac3c5d83 | 1646 | int64_t size; |
d9b902db PB |
1647 | int ret; |
1648 | ||
1649 | if (!has_speed) { | |
1650 | speed = 0; | |
1651 | } | |
b952b558 PB |
1652 | if (!has_on_source_error) { |
1653 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1654 | } | |
1655 | if (!has_on_target_error) { | |
1656 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1657 | } | |
d9b902db PB |
1658 | if (!has_mode) { |
1659 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1660 | } | |
eee13dfe PB |
1661 | if (!has_granularity) { |
1662 | granularity = 0; | |
1663 | } | |
08e4ed6c PB |
1664 | if (!has_buf_size) { |
1665 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1666 | } | |
1667 | ||
eee13dfe PB |
1668 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1669 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1670 | return; | |
1671 | } | |
1672 | if (granularity & (granularity - 1)) { | |
1673 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1674 | return; | |
1675 | } | |
d9b902db PB |
1676 | |
1677 | bs = bdrv_find(device); | |
1678 | if (!bs) { | |
1679 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1680 | return; | |
1681 | } | |
1682 | ||
1683 | if (!bdrv_is_inserted(bs)) { | |
1684 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1685 | return; | |
1686 | } | |
1687 | ||
1688 | if (!has_format) { | |
1689 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1690 | } | |
1691 | if (format) { | |
1692 | drv = bdrv_find_format(format); | |
1693 | if (!drv) { | |
1694 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1695 | return; | |
1696 | } | |
1697 | } | |
1698 | ||
1699 | if (bdrv_in_use(bs)) { | |
1700 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1701 | return; | |
1702 | } | |
1703 | ||
1704 | flags = bs->open_flags | BDRV_O_RDWR; | |
1705 | source = bs->backing_hd; | |
1706 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
1707 | sync = MIRROR_SYNC_MODE_FULL; | |
1708 | } | |
1709 | ||
ac3c5d83 SH |
1710 | size = bdrv_getlength(bs); |
1711 | if (size < 0) { | |
1712 | error_setg_errno(errp, -size, "bdrv_getlength failed"); | |
1713 | return; | |
1714 | } | |
1715 | ||
d9b902db PB |
1716 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
1717 | /* create new image w/o backing file */ | |
1718 | assert(format && drv); | |
cf8f2426 | 1719 | bdrv_img_create(target, format, |
f382d43a | 1720 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
1721 | } else { |
1722 | switch (mode) { | |
1723 | case NEW_IMAGE_MODE_EXISTING: | |
1724 | ret = 0; | |
1725 | break; | |
1726 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
1727 | /* create new image with backing file */ | |
cf8f2426 LC |
1728 | bdrv_img_create(target, format, |
1729 | source->filename, | |
1730 | source->drv->format_name, | |
f382d43a | 1731 | NULL, size, flags, &local_err, false); |
d9b902db PB |
1732 | break; |
1733 | default: | |
1734 | abort(); | |
1735 | } | |
1736 | } | |
1737 | ||
cf8f2426 LC |
1738 | if (error_is_set(&local_err)) { |
1739 | error_propagate(errp, local_err); | |
d9b902db PB |
1740 | return; |
1741 | } | |
1742 | ||
b812f671 PB |
1743 | /* Mirroring takes care of copy-on-write using the source's backing |
1744 | * file. | |
1745 | */ | |
d9b902db | 1746 | target_bs = bdrv_new(""); |
de9c0cec | 1747 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv); |
d9b902db PB |
1748 | if (ret < 0) { |
1749 | bdrv_delete(target_bs); | |
0eef407c | 1750 | error_setg_file_open(errp, -ret, target); |
d9b902db PB |
1751 | return; |
1752 | } | |
1753 | ||
08e4ed6c | 1754 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 1755 | on_source_error, on_target_error, |
b952b558 | 1756 | block_job_cb, bs, &local_err); |
d9b902db PB |
1757 | if (local_err != NULL) { |
1758 | bdrv_delete(target_bs); | |
1759 | error_propagate(errp, local_err); | |
1760 | return; | |
1761 | } | |
1762 | ||
1763 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1764 | * underneath us. | |
1765 | */ | |
1766 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1767 | } | |
1768 | ||
2d47c6e9 SH |
1769 | static BlockJob *find_block_job(const char *device) |
1770 | { | |
1771 | BlockDriverState *bs; | |
1772 | ||
1773 | bs = bdrv_find(device); | |
1774 | if (!bs || !bs->job) { | |
1775 | return NULL; | |
1776 | } | |
1777 | return bs->job; | |
1778 | } | |
1779 | ||
882ec7ce | 1780 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
1781 | { |
1782 | BlockJob *job = find_block_job(device); | |
1783 | ||
1784 | if (!job) { | |
7ef15070 | 1785 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
1786 | return; |
1787 | } | |
1788 | ||
882ec7ce | 1789 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 1790 | } |
370521a1 | 1791 | |
6e37fb81 PB |
1792 | void qmp_block_job_cancel(const char *device, |
1793 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
1794 | { |
1795 | BlockJob *job = find_block_job(device); | |
1796 | ||
6e37fb81 PB |
1797 | if (!has_force) { |
1798 | force = false; | |
1799 | } | |
1800 | ||
370521a1 | 1801 | if (!job) { |
7ef15070 | 1802 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
1803 | return; |
1804 | } | |
6e37fb81 | 1805 | if (job->paused && !force) { |
8acc72a4 PB |
1806 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
1807 | return; | |
1808 | } | |
370521a1 SH |
1809 | |
1810 | trace_qmp_block_job_cancel(job); | |
1811 | block_job_cancel(job); | |
1812 | } | |
fb5458cd | 1813 | |
6e37fb81 PB |
1814 | void qmp_block_job_pause(const char *device, Error **errp) |
1815 | { | |
1816 | BlockJob *job = find_block_job(device); | |
1817 | ||
1818 | if (!job) { | |
1819 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1820 | return; | |
1821 | } | |
1822 | ||
1823 | trace_qmp_block_job_pause(job); | |
1824 | block_job_pause(job); | |
1825 | } | |
1826 | ||
1827 | void qmp_block_job_resume(const char *device, Error **errp) | |
1828 | { | |
1829 | BlockJob *job = find_block_job(device); | |
1830 | ||
1831 | if (!job) { | |
1832 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1833 | return; | |
1834 | } | |
1835 | ||
1836 | trace_qmp_block_job_resume(job); | |
1837 | block_job_resume(job); | |
1838 | } | |
1839 | ||
aeae883b PB |
1840 | void qmp_block_job_complete(const char *device, Error **errp) |
1841 | { | |
1842 | BlockJob *job = find_block_job(device); | |
1843 | ||
1844 | if (!job) { | |
1845 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1846 | return; | |
1847 | } | |
1848 | ||
1849 | trace_qmp_block_job_complete(job); | |
1850 | block_job_complete(job, errp); | |
1851 | } | |
1852 | ||
fb5458cd SH |
1853 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
1854 | { | |
1855 | BlockJobInfoList **prev = opaque; | |
1856 | BlockJob *job = bs->job; | |
1857 | ||
1858 | if (job) { | |
30e628b7 PB |
1859 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
1860 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
1861 | (*prev)->next = elem; |
1862 | *prev = elem; | |
1863 | } | |
1864 | } | |
1865 | ||
1866 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
1867 | { | |
1868 | /* Dummy is a fake list element for holding the head pointer */ | |
1869 | BlockJobInfoList dummy = {}; | |
1870 | BlockJobInfoList *prev = &dummy; | |
1871 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
1872 | return dummy.next; | |
1873 | } | |
4d454574 | 1874 | |
0006383e | 1875 | QemuOptsList qemu_common_drive_opts = { |
4d454574 | 1876 | .name = "drive", |
0006383e | 1877 | .head = QTAILQ_HEAD_INITIALIZER(qemu_common_drive_opts.head), |
4d454574 PB |
1878 | .desc = { |
1879 | { | |
1880 | .name = "bus", | |
1881 | .type = QEMU_OPT_NUMBER, | |
1882 | .help = "bus number", | |
1883 | },{ | |
1884 | .name = "unit", | |
1885 | .type = QEMU_OPT_NUMBER, | |
1886 | .help = "unit number (i.e. lun for scsi)", | |
1887 | },{ | |
1888 | .name = "if", | |
1889 | .type = QEMU_OPT_STRING, | |
1890 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
1891 | },{ | |
1892 | .name = "index", | |
1893 | .type = QEMU_OPT_NUMBER, | |
1894 | .help = "index number", | |
1895 | },{ | |
1896 | .name = "cyls", | |
1897 | .type = QEMU_OPT_NUMBER, | |
1898 | .help = "number of cylinders (ide disk geometry)", | |
1899 | },{ | |
1900 | .name = "heads", | |
1901 | .type = QEMU_OPT_NUMBER, | |
1902 | .help = "number of heads (ide disk geometry)", | |
1903 | },{ | |
1904 | .name = "secs", | |
1905 | .type = QEMU_OPT_NUMBER, | |
1906 | .help = "number of sectors (ide disk geometry)", | |
1907 | },{ | |
1908 | .name = "trans", | |
1909 | .type = QEMU_OPT_STRING, | |
1910 | .help = "chs translation (auto, lba. none)", | |
1911 | },{ | |
1912 | .name = "media", | |
1913 | .type = QEMU_OPT_STRING, | |
1914 | .help = "media type (disk, cdrom)", | |
1915 | },{ | |
1916 | .name = "snapshot", | |
1917 | .type = QEMU_OPT_BOOL, | |
1918 | .help = "enable/disable snapshot mode", | |
1919 | },{ | |
1920 | .name = "file", | |
1921 | .type = QEMU_OPT_STRING, | |
1922 | .help = "disk image", | |
a9384aff PB |
1923 | },{ |
1924 | .name = "discard", | |
1925 | .type = QEMU_OPT_STRING, | |
1926 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 | 1927 | },{ |
29c4e2b5 KW |
1928 | .name = "cache.writeback", |
1929 | .type = QEMU_OPT_BOOL, | |
1930 | .help = "enables writeback mode for any caches", | |
1931 | },{ | |
1932 | .name = "cache.direct", | |
1933 | .type = QEMU_OPT_BOOL, | |
1934 | .help = "enables use of O_DIRECT (bypass the host page cache)", | |
1935 | },{ | |
1936 | .name = "cache.no-flush", | |
1937 | .type = QEMU_OPT_BOOL, | |
1938 | .help = "ignore any flush requests for the device", | |
4d454574 PB |
1939 | },{ |
1940 | .name = "aio", | |
1941 | .type = QEMU_OPT_STRING, | |
1942 | .help = "host AIO implementation (threads, native)", | |
1943 | },{ | |
1944 | .name = "format", | |
1945 | .type = QEMU_OPT_STRING, | |
1946 | .help = "disk format (raw, qcow2, ...)", | |
1947 | },{ | |
1948 | .name = "serial", | |
1949 | .type = QEMU_OPT_STRING, | |
1950 | .help = "disk serial number", | |
1951 | },{ | |
1952 | .name = "rerror", | |
1953 | .type = QEMU_OPT_STRING, | |
1954 | .help = "read error action", | |
1955 | },{ | |
1956 | .name = "werror", | |
1957 | .type = QEMU_OPT_STRING, | |
1958 | .help = "write error action", | |
1959 | },{ | |
1960 | .name = "addr", | |
1961 | .type = QEMU_OPT_STRING, | |
1962 | .help = "pci address (virtio only)", | |
1963 | },{ | |
0f227a94 | 1964 | .name = "read-only", |
4d454574 PB |
1965 | .type = QEMU_OPT_BOOL, |
1966 | .help = "open drive file as read-only", | |
1967 | },{ | |
57975222 | 1968 | .name = "throttling.iops-total", |
4d454574 PB |
1969 | .type = QEMU_OPT_NUMBER, |
1970 | .help = "limit total I/O operations per second", | |
1971 | },{ | |
57975222 | 1972 | .name = "throttling.iops-read", |
4d454574 PB |
1973 | .type = QEMU_OPT_NUMBER, |
1974 | .help = "limit read operations per second", | |
1975 | },{ | |
57975222 | 1976 | .name = "throttling.iops-write", |
4d454574 PB |
1977 | .type = QEMU_OPT_NUMBER, |
1978 | .help = "limit write operations per second", | |
1979 | },{ | |
57975222 | 1980 | .name = "throttling.bps-total", |
4d454574 PB |
1981 | .type = QEMU_OPT_NUMBER, |
1982 | .help = "limit total bytes per second", | |
1983 | },{ | |
57975222 | 1984 | .name = "throttling.bps-read", |
4d454574 PB |
1985 | .type = QEMU_OPT_NUMBER, |
1986 | .help = "limit read bytes per second", | |
1987 | },{ | |
57975222 | 1988 | .name = "throttling.bps-write", |
4d454574 PB |
1989 | .type = QEMU_OPT_NUMBER, |
1990 | .help = "limit write bytes per second", | |
1991 | },{ | |
1992 | .name = "copy-on-read", | |
1993 | .type = QEMU_OPT_BOOL, | |
1994 | .help = "copy read data from backing file into image file", | |
1995 | },{ | |
1996 | .name = "boot", | |
1997 | .type = QEMU_OPT_BOOL, | |
1998 | .help = "(deprecated, ignored)", | |
1999 | }, | |
2000 | { /* end of list */ } | |
2001 | }, | |
2002 | }; | |
0006383e | 2003 | |
8afaefb8 KW |
2004 | QemuOptsList qemu_old_drive_opts = { |
2005 | .name = "drive", | |
2006 | .head = QTAILQ_HEAD_INITIALIZER(qemu_old_drive_opts.head), | |
2007 | .desc = { | |
2008 | { | |
2009 | .name = "bus", | |
2010 | .type = QEMU_OPT_NUMBER, | |
2011 | .help = "bus number", | |
2012 | },{ | |
2013 | .name = "unit", | |
2014 | .type = QEMU_OPT_NUMBER, | |
2015 | .help = "unit number (i.e. lun for scsi)", | |
2016 | },{ | |
2017 | .name = "if", | |
2018 | .type = QEMU_OPT_STRING, | |
2019 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
2020 | },{ | |
2021 | .name = "index", | |
2022 | .type = QEMU_OPT_NUMBER, | |
2023 | .help = "index number", | |
2024 | },{ | |
2025 | .name = "cyls", | |
2026 | .type = QEMU_OPT_NUMBER, | |
2027 | .help = "number of cylinders (ide disk geometry)", | |
2028 | },{ | |
2029 | .name = "heads", | |
2030 | .type = QEMU_OPT_NUMBER, | |
2031 | .help = "number of heads (ide disk geometry)", | |
2032 | },{ | |
2033 | .name = "secs", | |
2034 | .type = QEMU_OPT_NUMBER, | |
2035 | .help = "number of sectors (ide disk geometry)", | |
2036 | },{ | |
2037 | .name = "trans", | |
2038 | .type = QEMU_OPT_STRING, | |
2039 | .help = "chs translation (auto, lba. none)", | |
2040 | },{ | |
2041 | .name = "media", | |
2042 | .type = QEMU_OPT_STRING, | |
2043 | .help = "media type (disk, cdrom)", | |
2044 | },{ | |
2045 | .name = "snapshot", | |
2046 | .type = QEMU_OPT_BOOL, | |
2047 | .help = "enable/disable snapshot mode", | |
2048 | },{ | |
2049 | .name = "file", | |
2050 | .type = QEMU_OPT_STRING, | |
2051 | .help = "disk image", | |
2052 | },{ | |
2053 | .name = "discard", | |
2054 | .type = QEMU_OPT_STRING, | |
2055 | .help = "discard operation (ignore/off, unmap/on)", | |
2056 | },{ | |
2057 | .name = "cache", | |
2058 | .type = QEMU_OPT_STRING, | |
2059 | .help = "host cache usage (none, writeback, writethrough, " | |
2060 | "directsync, unsafe)", | |
2061 | },{ | |
2062 | .name = "aio", | |
2063 | .type = QEMU_OPT_STRING, | |
2064 | .help = "host AIO implementation (threads, native)", | |
2065 | },{ | |
2066 | .name = "format", | |
2067 | .type = QEMU_OPT_STRING, | |
2068 | .help = "disk format (raw, qcow2, ...)", | |
2069 | },{ | |
2070 | .name = "serial", | |
2071 | .type = QEMU_OPT_STRING, | |
2072 | .help = "disk serial number", | |
2073 | },{ | |
2074 | .name = "rerror", | |
2075 | .type = QEMU_OPT_STRING, | |
2076 | .help = "read error action", | |
2077 | },{ | |
2078 | .name = "werror", | |
2079 | .type = QEMU_OPT_STRING, | |
2080 | .help = "write error action", | |
2081 | },{ | |
2082 | .name = "addr", | |
2083 | .type = QEMU_OPT_STRING, | |
2084 | .help = "pci address (virtio only)", | |
2085 | },{ | |
2086 | .name = "readonly", | |
2087 | .type = QEMU_OPT_BOOL, | |
2088 | .help = "open drive file as read-only", | |
2089 | },{ | |
2090 | .name = "iops", | |
2091 | .type = QEMU_OPT_NUMBER, | |
2092 | .help = "limit total I/O operations per second", | |
2093 | },{ | |
2094 | .name = "iops_rd", | |
2095 | .type = QEMU_OPT_NUMBER, | |
2096 | .help = "limit read operations per second", | |
2097 | },{ | |
2098 | .name = "iops_wr", | |
2099 | .type = QEMU_OPT_NUMBER, | |
2100 | .help = "limit write operations per second", | |
2101 | },{ | |
2102 | .name = "bps", | |
2103 | .type = QEMU_OPT_NUMBER, | |
2104 | .help = "limit total bytes per second", | |
2105 | },{ | |
2106 | .name = "bps_rd", | |
2107 | .type = QEMU_OPT_NUMBER, | |
2108 | .help = "limit read bytes per second", | |
2109 | },{ | |
2110 | .name = "bps_wr", | |
2111 | .type = QEMU_OPT_NUMBER, | |
2112 | .help = "limit write bytes per second", | |
2113 | },{ | |
2114 | .name = "copy-on-read", | |
2115 | .type = QEMU_OPT_BOOL, | |
2116 | .help = "copy read data from backing file into image file", | |
2117 | },{ | |
2118 | .name = "boot", | |
2119 | .type = QEMU_OPT_BOOL, | |
2120 | .help = "(deprecated, ignored)", | |
2121 | }, | |
2122 | { /* end of list */ } | |
2123 | }, | |
2124 | }; | |
2125 | ||
0006383e KW |
2126 | QemuOptsList qemu_drive_opts = { |
2127 | .name = "drive", | |
2128 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
2129 | .desc = { | |
492fdc6f KW |
2130 | /* |
2131 | * no elements => accept any params | |
2132 | * validation will happen later | |
2133 | */ | |
0006383e KW |
2134 | { /* end of list */ } |
2135 | }, | |
2136 | }; |