]>
Commit | Line | Data |
---|---|---|
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. | |
8 | */ | |
9 | ||
9c17d615 | 10 | #include "sysemu/blockdev.h" |
2b584959 | 11 | #include "hw/block-common.h" |
737e150e | 12 | #include "block/blockjob.h" |
83c9089e | 13 | #include "monitor/monitor.h" |
7b1b5d19 | 14 | #include "qapi/qmp/qerror.h" |
1de7afc9 PB |
15 | #include "qemu/option.h" |
16 | #include "qemu/config-file.h" | |
7b1b5d19 | 17 | #include "qapi/qmp/types.h" |
9c17d615 | 18 | #include "sysemu/sysemu.h" |
737e150e | 19 | #include "block/block_int.h" |
a4dea8a9 | 20 | #include "qmp-commands.h" |
12bd451f | 21 | #include "trace.h" |
9c17d615 | 22 | #include "sysemu/arch_init.h" |
666daa68 | 23 | |
c9b62a7e | 24 | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives); |
666daa68 | 25 | |
1960966d MA |
26 | static const char *const if_name[IF_COUNT] = { |
27 | [IF_NONE] = "none", | |
28 | [IF_IDE] = "ide", | |
29 | [IF_SCSI] = "scsi", | |
30 | [IF_FLOPPY] = "floppy", | |
31 | [IF_PFLASH] = "pflash", | |
32 | [IF_MTD] = "mtd", | |
33 | [IF_SD] = "sd", | |
34 | [IF_VIRTIO] = "virtio", | |
35 | [IF_XEN] = "xen", | |
36 | }; | |
37 | ||
38 | static const int if_max_devs[IF_COUNT] = { | |
27d6bf40 MA |
39 | /* |
40 | * Do not change these numbers! They govern how drive option | |
41 | * index maps to unit and bus. That mapping is ABI. | |
42 | * | |
43 | * All controllers used to imlement if=T drives need to support | |
44 | * if_max_devs[T] units, for any T with if_max_devs[T] != 0. | |
45 | * Otherwise, some index values map to "impossible" bus, unit | |
46 | * values. | |
47 | * | |
48 | * For instance, if you change [IF_SCSI] to 255, -drive | |
49 | * if=scsi,index=12 no longer means bus=1,unit=5, but | |
50 | * bus=0,unit=12. With an lsi53c895a controller (7 units max), | |
51 | * the drive can't be set up. Regression. | |
52 | */ | |
53 | [IF_IDE] = 2, | |
54 | [IF_SCSI] = 7, | |
1960966d MA |
55 | }; |
56 | ||
14bafc54 MA |
57 | /* |
58 | * We automatically delete the drive when a device using it gets | |
59 | * unplugged. Questionable feature, but we can't just drop it. | |
60 | * Device models call blockdev_mark_auto_del() to schedule the | |
61 | * automatic deletion, and generic qdev code calls blockdev_auto_del() | |
62 | * when deletion is actually safe. | |
63 | */ | |
64 | void blockdev_mark_auto_del(BlockDriverState *bs) | |
65 | { | |
66 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
67 | ||
12bde0ee PB |
68 | if (bs->job) { |
69 | block_job_cancel(bs->job); | |
70 | } | |
0fc0f1fa RH |
71 | if (dinfo) { |
72 | dinfo->auto_del = 1; | |
73 | } | |
14bafc54 MA |
74 | } |
75 | ||
76 | void blockdev_auto_del(BlockDriverState *bs) | |
77 | { | |
78 | DriveInfo *dinfo = drive_get_by_blockdev(bs); | |
79 | ||
0fc0f1fa | 80 | if (dinfo && dinfo->auto_del) { |
84fb3925 | 81 | drive_put_ref(dinfo); |
14bafc54 MA |
82 | } |
83 | } | |
84 | ||
505a7fb1 MA |
85 | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
86 | { | |
87 | int max_devs = if_max_devs[type]; | |
88 | return max_devs ? index / max_devs : 0; | |
89 | } | |
90 | ||
91 | static int drive_index_to_unit_id(BlockInterfaceType type, int index) | |
92 | { | |
93 | int max_devs = if_max_devs[type]; | |
94 | return max_devs ? index % max_devs : index; | |
95 | } | |
96 | ||
2292ddae MA |
97 | QemuOpts *drive_def(const char *optstr) |
98 | { | |
99 | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); | |
100 | } | |
101 | ||
102 | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, | |
5645b0f4 | 103 | const char *optstr) |
666daa68 | 104 | { |
666daa68 | 105 | QemuOpts *opts; |
2292ddae | 106 | char buf[32]; |
666daa68 | 107 | |
2292ddae | 108 | opts = drive_def(optstr); |
666daa68 MA |
109 | if (!opts) { |
110 | return NULL; | |
111 | } | |
2292ddae MA |
112 | if (type != IF_DEFAULT) { |
113 | qemu_opt_set(opts, "if", if_name[type]); | |
114 | } | |
115 | if (index >= 0) { | |
116 | snprintf(buf, sizeof(buf), "%d", index); | |
117 | qemu_opt_set(opts, "index", buf); | |
118 | } | |
666daa68 MA |
119 | if (file) |
120 | qemu_opt_set(opts, "file", file); | |
121 | return opts; | |
122 | } | |
123 | ||
124 | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) | |
125 | { | |
126 | DriveInfo *dinfo; | |
127 | ||
128 | /* seek interface, bus and unit */ | |
129 | ||
130 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
131 | if (dinfo->type == type && | |
132 | dinfo->bus == bus && | |
133 | dinfo->unit == unit) | |
134 | return dinfo; | |
135 | } | |
136 | ||
137 | return NULL; | |
138 | } | |
139 | ||
f1bd51ac MA |
140 | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index) |
141 | { | |
142 | return drive_get(type, | |
143 | drive_index_to_bus_id(type, index), | |
144 | drive_index_to_unit_id(type, index)); | |
145 | } | |
146 | ||
666daa68 MA |
147 | int drive_get_max_bus(BlockInterfaceType type) |
148 | { | |
149 | int max_bus; | |
150 | DriveInfo *dinfo; | |
151 | ||
152 | max_bus = -1; | |
153 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
154 | if(dinfo->type == type && | |
155 | dinfo->bus > max_bus) | |
156 | max_bus = dinfo->bus; | |
157 | } | |
158 | return max_bus; | |
159 | } | |
160 | ||
13839974 MA |
161 | /* Get a block device. This should only be used for single-drive devices |
162 | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the | |
163 | appropriate bus. */ | |
164 | DriveInfo *drive_get_next(BlockInterfaceType type) | |
165 | { | |
166 | static int next_block_unit[IF_COUNT]; | |
167 | ||
168 | return drive_get(type, 0, next_block_unit[type]++); | |
169 | } | |
170 | ||
e4700e59 | 171 | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
666daa68 MA |
172 | { |
173 | DriveInfo *dinfo; | |
174 | ||
175 | QTAILQ_FOREACH(dinfo, &drives, next) { | |
e4700e59 MA |
176 | if (dinfo->bdrv == bs) { |
177 | return dinfo; | |
178 | } | |
666daa68 | 179 | } |
e4700e59 | 180 | return NULL; |
666daa68 MA |
181 | } |
182 | ||
666daa68 MA |
183 | static void bdrv_format_print(void *opaque, const char *name) |
184 | { | |
807105a7 | 185 | error_printf(" %s", name); |
666daa68 MA |
186 | } |
187 | ||
84fb3925 | 188 | static void drive_uninit(DriveInfo *dinfo) |
666daa68 MA |
189 | { |
190 | qemu_opts_del(dinfo->opts); | |
191 | bdrv_delete(dinfo->bdrv); | |
7267c094 | 192 | g_free(dinfo->id); |
666daa68 | 193 | QTAILQ_REMOVE(&drives, dinfo, next); |
bb44619b | 194 | g_free(dinfo->serial); |
7267c094 | 195 | g_free(dinfo); |
666daa68 MA |
196 | } |
197 | ||
84fb3925 MT |
198 | void drive_put_ref(DriveInfo *dinfo) |
199 | { | |
200 | assert(dinfo->refcount); | |
201 | if (--dinfo->refcount == 0) { | |
202 | drive_uninit(dinfo); | |
203 | } | |
204 | } | |
205 | ||
206 | void drive_get_ref(DriveInfo *dinfo) | |
207 | { | |
208 | dinfo->refcount++; | |
209 | } | |
210 | ||
aa398a5c SH |
211 | typedef struct { |
212 | QEMUBH *bh; | |
213 | DriveInfo *dinfo; | |
214 | } DrivePutRefBH; | |
215 | ||
216 | static void drive_put_ref_bh(void *opaque) | |
217 | { | |
218 | DrivePutRefBH *s = opaque; | |
219 | ||
220 | drive_put_ref(s->dinfo); | |
221 | qemu_bh_delete(s->bh); | |
222 | g_free(s); | |
223 | } | |
224 | ||
225 | /* | |
226 | * Release a drive reference in a BH | |
227 | * | |
228 | * It is not possible to use drive_put_ref() from a callback function when the | |
229 | * callers still need the drive. In such cases we schedule a BH to release the | |
230 | * reference. | |
231 | */ | |
232 | static void drive_put_ref_bh_schedule(DriveInfo *dinfo) | |
233 | { | |
234 | DrivePutRefBH *s; | |
235 | ||
236 | s = g_new(DrivePutRefBH, 1); | |
237 | s->bh = qemu_bh_new(drive_put_ref_bh, s); | |
238 | s->dinfo = dinfo; | |
239 | qemu_bh_schedule(s->bh); | |
240 | } | |
241 | ||
1ceee0d5 | 242 | static int parse_block_error_action(const char *buf, bool is_read) |
666daa68 MA |
243 | { |
244 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 245 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 246 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 247 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 248 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 249 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 250 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 251 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 252 | } else { |
807105a7 MA |
253 | error_report("'%s' invalid %s error action", |
254 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
255 | return -1; |
256 | } | |
257 | } | |
258 | ||
c546194f | 259 | static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp) |
0563e191 ZYW |
260 | { |
261 | bool bps_flag; | |
262 | bool iops_flag; | |
263 | ||
264 | assert(io_limits); | |
265 | ||
266 | bps_flag = (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] != 0) | |
267 | && ((io_limits->bps[BLOCK_IO_LIMIT_READ] != 0) | |
268 | || (io_limits->bps[BLOCK_IO_LIMIT_WRITE] != 0)); | |
269 | iops_flag = (io_limits->iops[BLOCK_IO_LIMIT_TOTAL] != 0) | |
270 | && ((io_limits->iops[BLOCK_IO_LIMIT_READ] != 0) | |
271 | || (io_limits->iops[BLOCK_IO_LIMIT_WRITE] != 0)); | |
272 | if (bps_flag || iops_flag) { | |
c546194f SH |
273 | error_setg(errp, "bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) " |
274 | "cannot be used at the same time"); | |
0563e191 ZYW |
275 | return false; |
276 | } | |
277 | ||
7d81c141 SH |
278 | if (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] < 0 || |
279 | io_limits->bps[BLOCK_IO_LIMIT_WRITE] < 0 || | |
280 | io_limits->bps[BLOCK_IO_LIMIT_READ] < 0 || | |
281 | io_limits->iops[BLOCK_IO_LIMIT_TOTAL] < 0 || | |
282 | io_limits->iops[BLOCK_IO_LIMIT_WRITE] < 0 || | |
283 | io_limits->iops[BLOCK_IO_LIMIT_READ] < 0) { | |
284 | error_setg(errp, "bps and iops values must be 0 or greater"); | |
285 | return false; | |
286 | } | |
287 | ||
0563e191 ZYW |
288 | return true; |
289 | } | |
290 | ||
2d0d2837 | 291 | DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType block_default_type) |
666daa68 MA |
292 | { |
293 | const char *buf; | |
294 | const char *file = NULL; | |
666daa68 MA |
295 | const char *serial; |
296 | const char *mediastr = ""; | |
297 | BlockInterfaceType type; | |
298 | enum { MEDIA_DISK, MEDIA_CDROM } media; | |
299 | int bus_id, unit_id; | |
300 | int cyls, heads, secs, translation; | |
301 | BlockDriver *drv = NULL; | |
302 | int max_devs; | |
303 | int index; | |
304 | int ro = 0; | |
305 | int bdrv_flags = 0; | |
306 | int on_read_error, on_write_error; | |
307 | const char *devaddr; | |
308 | DriveInfo *dinfo; | |
0563e191 | 309 | BlockIOLimit io_limits; |
666daa68 | 310 | int snapshot = 0; |
fb0490f6 | 311 | bool copy_on_read; |
666daa68 | 312 | int ret; |
c546194f | 313 | Error *error = NULL; |
666daa68 | 314 | |
666daa68 | 315 | translation = BIOS_ATA_TRANSLATION_AUTO; |
666daa68 MA |
316 | media = MEDIA_DISK; |
317 | ||
318 | /* extract parameters */ | |
319 | bus_id = qemu_opt_get_number(opts, "bus", 0); | |
320 | unit_id = qemu_opt_get_number(opts, "unit", -1); | |
321 | index = qemu_opt_get_number(opts, "index", -1); | |
322 | ||
323 | cyls = qemu_opt_get_number(opts, "cyls", 0); | |
324 | heads = qemu_opt_get_number(opts, "heads", 0); | |
325 | secs = qemu_opt_get_number(opts, "secs", 0); | |
326 | ||
327 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); | |
328 | ro = qemu_opt_get_bool(opts, "readonly", 0); | |
fb0490f6 | 329 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 MA |
330 | |
331 | file = qemu_opt_get(opts, "file"); | |
332 | serial = qemu_opt_get(opts, "serial"); | |
333 | ||
334 | if ((buf = qemu_opt_get(opts, "if")) != NULL) { | |
1960966d MA |
335 | for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++) |
336 | ; | |
337 | if (type == IF_COUNT) { | |
807105a7 | 338 | error_report("unsupported bus type '%s'", buf); |
666daa68 MA |
339 | return NULL; |
340 | } | |
2d3999fe | 341 | } else { |
2d0d2837 | 342 | type = block_default_type; |
666daa68 | 343 | } |
2d3999fe | 344 | |
1960966d | 345 | max_devs = if_max_devs[type]; |
666daa68 MA |
346 | |
347 | if (cyls || heads || secs) { | |
aaea3f36 | 348 | if (cyls < 1) { |
807105a7 | 349 | error_report("invalid physical cyls number"); |
666daa68 MA |
350 | return NULL; |
351 | } | |
aaea3f36 | 352 | if (heads < 1) { |
807105a7 | 353 | error_report("invalid physical heads number"); |
666daa68 MA |
354 | return NULL; |
355 | } | |
aaea3f36 | 356 | if (secs < 1) { |
807105a7 | 357 | error_report("invalid physical secs number"); |
666daa68 MA |
358 | return NULL; |
359 | } | |
360 | } | |
361 | ||
362 | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { | |
363 | if (!cyls) { | |
e4080f9b | 364 | error_report("'%s' trans must be used with cyls, heads and secs", |
807105a7 | 365 | buf); |
666daa68 MA |
366 | return NULL; |
367 | } | |
368 | if (!strcmp(buf, "none")) | |
369 | translation = BIOS_ATA_TRANSLATION_NONE; | |
370 | else if (!strcmp(buf, "lba")) | |
371 | translation = BIOS_ATA_TRANSLATION_LBA; | |
372 | else if (!strcmp(buf, "auto")) | |
373 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
374 | else { | |
807105a7 | 375 | error_report("'%s' invalid translation type", buf); |
666daa68 MA |
376 | return NULL; |
377 | } | |
378 | } | |
379 | ||
380 | if ((buf = qemu_opt_get(opts, "media")) != NULL) { | |
381 | if (!strcmp(buf, "disk")) { | |
382 | media = MEDIA_DISK; | |
383 | } else if (!strcmp(buf, "cdrom")) { | |
384 | if (cyls || secs || heads) { | |
e7ff8f0e | 385 | error_report("CHS can't be set with media=%s", buf); |
666daa68 MA |
386 | return NULL; |
387 | } | |
388 | media = MEDIA_CDROM; | |
389 | } else { | |
807105a7 | 390 | error_report("'%s' invalid media", buf); |
666daa68 MA |
391 | return NULL; |
392 | } | |
393 | } | |
394 | ||
a9384aff PB |
395 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
396 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
397 | error_report("invalid discard option"); | |
398 | return NULL; | |
399 | } | |
400 | } | |
401 | ||
1f212b9d | 402 | bdrv_flags |= BDRV_O_CACHE_WB; |
666daa68 | 403 | if ((buf = qemu_opt_get(opts, "cache")) != NULL) { |
c3993cdc SH |
404 | if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) { |
405 | error_report("invalid cache option"); | |
406 | return NULL; | |
666daa68 MA |
407 | } |
408 | } | |
409 | ||
410 | #ifdef CONFIG_LINUX_AIO | |
411 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
412 | if (!strcmp(buf, "native")) { | |
413 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
414 | } else if (!strcmp(buf, "threads")) { | |
415 | /* this is the default */ | |
416 | } else { | |
807105a7 | 417 | error_report("invalid aio option"); |
666daa68 MA |
418 | return NULL; |
419 | } | |
420 | } | |
421 | #endif | |
422 | ||
423 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
424 | if (is_help_option(buf)) { |
425 | error_printf("Supported formats:"); | |
426 | bdrv_iterate_format(bdrv_format_print, NULL); | |
427 | error_printf("\n"); | |
428 | return NULL; | |
666daa68 MA |
429 | } |
430 | drv = bdrv_find_whitelisted_format(buf); | |
431 | if (!drv) { | |
807105a7 | 432 | error_report("'%s' invalid format", buf); |
666daa68 MA |
433 | return NULL; |
434 | } | |
435 | } | |
436 | ||
0563e191 ZYW |
437 | /* disk I/O throttling */ |
438 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = | |
439 | qemu_opt_get_number(opts, "bps", 0); | |
440 | io_limits.bps[BLOCK_IO_LIMIT_READ] = | |
441 | qemu_opt_get_number(opts, "bps_rd", 0); | |
442 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = | |
443 | qemu_opt_get_number(opts, "bps_wr", 0); | |
444 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL] = | |
445 | qemu_opt_get_number(opts, "iops", 0); | |
446 | io_limits.iops[BLOCK_IO_LIMIT_READ] = | |
447 | qemu_opt_get_number(opts, "iops_rd", 0); | |
448 | io_limits.iops[BLOCK_IO_LIMIT_WRITE] = | |
449 | qemu_opt_get_number(opts, "iops_wr", 0); | |
450 | ||
c546194f SH |
451 | if (!do_check_io_limits(&io_limits, &error)) { |
452 | error_report("%s", error_get_pretty(error)); | |
453 | error_free(error); | |
0563e191 ZYW |
454 | return NULL; |
455 | } | |
456 | ||
0d92d17a JK |
457 | if (qemu_opt_get(opts, "boot") != NULL) { |
458 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
459 | "ignored. Future versions will reject this parameter. Please " | |
460 | "update your scripts.\n"); | |
461 | } | |
462 | ||
92aa5c6d | 463 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
464 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
465 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
807105a7 | 466 | error_report("werror is not supported by this bus type"); |
666daa68 MA |
467 | return NULL; |
468 | } | |
469 | ||
470 | on_write_error = parse_block_error_action(buf, 0); | |
471 | if (on_write_error < 0) { | |
472 | return NULL; | |
473 | } | |
474 | } | |
475 | ||
92aa5c6d | 476 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 477 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 478 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 479 | error_report("rerror is not supported by this bus type"); |
666daa68 MA |
480 | return NULL; |
481 | } | |
482 | ||
483 | on_read_error = parse_block_error_action(buf, 1); | |
484 | if (on_read_error < 0) { | |
485 | return NULL; | |
486 | } | |
487 | } | |
488 | ||
489 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
490 | if (type != IF_VIRTIO) { | |
807105a7 | 491 | error_report("addr is not supported by this bus type"); |
666daa68 MA |
492 | return NULL; |
493 | } | |
494 | } | |
495 | ||
496 | /* compute bus and unit according index */ | |
497 | ||
498 | if (index != -1) { | |
499 | if (bus_id != 0 || unit_id != -1) { | |
807105a7 | 500 | error_report("index cannot be used with bus and unit"); |
666daa68 MA |
501 | return NULL; |
502 | } | |
505a7fb1 MA |
503 | bus_id = drive_index_to_bus_id(type, index); |
504 | unit_id = drive_index_to_unit_id(type, index); | |
666daa68 MA |
505 | } |
506 | ||
507 | /* if user doesn't specify a unit_id, | |
508 | * try to find the first free | |
509 | */ | |
510 | ||
511 | if (unit_id == -1) { | |
512 | unit_id = 0; | |
513 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
514 | unit_id++; | |
515 | if (max_devs && unit_id >= max_devs) { | |
516 | unit_id -= max_devs; | |
517 | bus_id++; | |
518 | } | |
519 | } | |
520 | } | |
521 | ||
522 | /* check unit id */ | |
523 | ||
524 | if (max_devs && unit_id >= max_devs) { | |
807105a7 MA |
525 | error_report("unit %d too big (max is %d)", |
526 | unit_id, max_devs - 1); | |
666daa68 MA |
527 | return NULL; |
528 | } | |
529 | ||
530 | /* | |
4e5d9b57 | 531 | * catch multiple definitions |
666daa68 MA |
532 | */ |
533 | ||
534 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
4e5d9b57 MA |
535 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
536 | bus_id, unit_id, index); | |
666daa68 MA |
537 | return NULL; |
538 | } | |
539 | ||
540 | /* init */ | |
541 | ||
7267c094 | 542 | dinfo = g_malloc0(sizeof(*dinfo)); |
666daa68 | 543 | if ((buf = qemu_opts_id(opts)) != NULL) { |
7267c094 | 544 | dinfo->id = g_strdup(buf); |
666daa68 MA |
545 | } else { |
546 | /* no id supplied -> create one */ | |
7267c094 | 547 | dinfo->id = g_malloc0(32); |
666daa68 MA |
548 | if (type == IF_IDE || type == IF_SCSI) |
549 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
550 | if (max_devs) | |
551 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
79d21d5b | 552 | if_name[type], bus_id, mediastr, unit_id); |
666daa68 MA |
553 | else |
554 | snprintf(dinfo->id, 32, "%s%s%i", | |
79d21d5b | 555 | if_name[type], mediastr, unit_id); |
666daa68 MA |
556 | } |
557 | dinfo->bdrv = bdrv_new(dinfo->id); | |
80dd1aae KS |
558 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
559 | dinfo->bdrv->read_only = ro; | |
666daa68 MA |
560 | dinfo->devaddr = devaddr; |
561 | dinfo->type = type; | |
562 | dinfo->bus = bus_id; | |
563 | dinfo->unit = unit_id; | |
317bb412 MA |
564 | dinfo->cyls = cyls; |
565 | dinfo->heads = heads; | |
566 | dinfo->secs = secs; | |
567 | dinfo->trans = translation; | |
666daa68 | 568 | dinfo->opts = opts; |
84fb3925 | 569 | dinfo->refcount = 1; |
bb44619b KW |
570 | if (serial != NULL) { |
571 | dinfo->serial = g_strdup(serial); | |
572 | } | |
666daa68 MA |
573 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
574 | ||
abd7f68d MA |
575 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
576 | ||
0563e191 ZYW |
577 | /* disk I/O throttling */ |
578 | bdrv_set_io_limits(dinfo->bdrv, &io_limits); | |
579 | ||
666daa68 MA |
580 | switch(type) { |
581 | case IF_IDE: | |
582 | case IF_SCSI: | |
583 | case IF_XEN: | |
584 | case IF_NONE: | |
2b584959 | 585 | dinfo->media_cd = media == MEDIA_CDROM; |
666daa68 MA |
586 | break; |
587 | case IF_SD: | |
666daa68 | 588 | case IF_FLOPPY: |
666daa68 MA |
589 | case IF_PFLASH: |
590 | case IF_MTD: | |
591 | break; | |
592 | case IF_VIRTIO: | |
593 | /* add virtio block device */ | |
e478b448 | 594 | opts = qemu_opts_create_nofail(qemu_find_opts("device")); |
eeb9c1b5 AL |
595 | if (arch_type == QEMU_ARCH_S390X) { |
596 | qemu_opt_set(opts, "driver", "virtio-blk-s390"); | |
597 | } else { | |
598 | qemu_opt_set(opts, "driver", "virtio-blk-pci"); | |
599 | } | |
666daa68 MA |
600 | qemu_opt_set(opts, "drive", dinfo->id); |
601 | if (devaddr) | |
602 | qemu_opt_set(opts, "addr", devaddr); | |
603 | break; | |
2292ddae | 604 | default: |
666daa68 MA |
605 | abort(); |
606 | } | |
dd5b0d71 | 607 | if (!file || !*file) { |
319ae529 | 608 | return dinfo; |
666daa68 MA |
609 | } |
610 | if (snapshot) { | |
611 | /* always use cache=unsafe with snapshot */ | |
612 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
613 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
614 | } | |
615 | ||
fb0490f6 SH |
616 | if (copy_on_read) { |
617 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
618 | } | |
619 | ||
ed9d4205 BC |
620 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
621 | bdrv_flags |= BDRV_O_INCOMING; | |
622 | } | |
623 | ||
666daa68 MA |
624 | if (media == MEDIA_CDROM) { |
625 | /* CDROM is fine for any interface, don't check. */ | |
626 | ro = 1; | |
627 | } else if (ro == 1) { | |
1e9eb78a JJ |
628 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && |
629 | type != IF_NONE && type != IF_PFLASH) { | |
807105a7 | 630 | error_report("readonly not supported by this bus type"); |
a9ae2bff | 631 | goto err; |
666daa68 MA |
632 | } |
633 | } | |
634 | ||
635 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
636 | ||
04d4abe9 SH |
637 | if (ro && copy_on_read) { |
638 | error_report("warning: disabling copy_on_read on readonly drive"); | |
639 | } | |
640 | ||
de9c0cec | 641 | ret = bdrv_open(dinfo->bdrv, file, NULL, bdrv_flags, drv); |
666daa68 | 642 | if (ret < 0) { |
02582abd SW |
643 | if (ret == -EMEDIUMTYPE) { |
644 | error_report("could not open disk image %s: not in %s format", | |
645 | file, drv->format_name); | |
646 | } else { | |
647 | error_report("could not open disk image %s: %s", | |
648 | file, strerror(-ret)); | |
649 | } | |
a9ae2bff | 650 | goto err; |
666daa68 MA |
651 | } |
652 | ||
653 | if (bdrv_key_required(dinfo->bdrv)) | |
654 | autostart = 0; | |
666daa68 | 655 | return dinfo; |
a9ae2bff MA |
656 | |
657 | err: | |
658 | bdrv_delete(dinfo->bdrv); | |
7267c094 | 659 | g_free(dinfo->id); |
a9ae2bff | 660 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 661 | g_free(dinfo); |
a9ae2bff | 662 | return NULL; |
666daa68 MA |
663 | } |
664 | ||
665 | void do_commit(Monitor *mon, const QDict *qdict) | |
666 | { | |
666daa68 | 667 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 668 | BlockDriverState *bs; |
e8877497 | 669 | int ret; |
666daa68 | 670 | |
6ab4b5ab | 671 | if (!strcmp(device, "all")) { |
e8877497 | 672 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
673 | } else { |
674 | bs = bdrv_find(device); | |
ac59eb95 | 675 | if (!bs) { |
58513bde | 676 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 677 | return; |
6ab4b5ab | 678 | } |
2d3735d3 | 679 | ret = bdrv_commit(bs); |
58513bde JC |
680 | } |
681 | if (ret < 0) { | |
682 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
683 | strerror(-ret)); | |
666daa68 MA |
684 | } |
685 | } | |
686 | ||
6cc2a415 PB |
687 | static void blockdev_do_action(int kind, void *data, Error **errp) |
688 | { | |
689 | BlockdevAction action; | |
690 | BlockdevActionList list; | |
691 | ||
692 | action.kind = kind; | |
693 | action.data = data; | |
694 | list.value = &action; | |
695 | list.next = NULL; | |
696 | qmp_transaction(&list, errp); | |
697 | } | |
698 | ||
6106e249 LC |
699 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
700 | bool has_format, const char *format, | |
6cc2a415 | 701 | bool has_mode, enum NewImageMode mode, |
6106e249 | 702 | Error **errp) |
f8882568 | 703 | { |
6cc2a415 PB |
704 | BlockdevSnapshot snapshot = { |
705 | .device = (char *) device, | |
706 | .snapshot_file = (char *) snapshot_file, | |
707 | .has_format = has_format, | |
708 | .format = (char *) format, | |
709 | .has_mode = has_mode, | |
710 | .mode = mode, | |
711 | }; | |
712 | blockdev_do_action(BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, &snapshot, | |
713 | errp); | |
f8882568 JS |
714 | } |
715 | ||
8802d1fd JC |
716 | |
717 | /* New and old BlockDriverState structs for group snapshots */ | |
52e7c241 | 718 | typedef struct BlkTransactionStates { |
8802d1fd JC |
719 | BlockDriverState *old_bs; |
720 | BlockDriverState *new_bs; | |
52e7c241 PB |
721 | QSIMPLEQ_ENTRY(BlkTransactionStates) entry; |
722 | } BlkTransactionStates; | |
8802d1fd JC |
723 | |
724 | /* | |
725 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
726 | * then we do not pivot any of the devices in the group, and abandon the | |
727 | * snapshots | |
728 | */ | |
52e7c241 | 729 | void qmp_transaction(BlockdevActionList *dev_list, Error **errp) |
8802d1fd JC |
730 | { |
731 | int ret = 0; | |
52e7c241 PB |
732 | BlockdevActionList *dev_entry = dev_list; |
733 | BlkTransactionStates *states, *next; | |
43e17041 | 734 | Error *local_err = NULL; |
8802d1fd | 735 | |
52e7c241 | 736 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionStates) snap_bdrv_states; |
8802d1fd JC |
737 | QSIMPLEQ_INIT(&snap_bdrv_states); |
738 | ||
739 | /* drain all i/o before any snapshots */ | |
740 | bdrv_drain_all(); | |
741 | ||
742 | /* We don't do anything in this loop that commits us to the snapshot */ | |
743 | while (NULL != dev_entry) { | |
52e7c241 PB |
744 | BlockdevAction *dev_info = NULL; |
745 | BlockDriver *proto_drv; | |
746 | BlockDriver *drv; | |
747 | int flags; | |
bc8b094f PB |
748 | enum NewImageMode mode; |
749 | const char *new_image_file; | |
52e7c241 PB |
750 | const char *device; |
751 | const char *format = "qcow2"; | |
52e7c241 | 752 | |
8802d1fd JC |
753 | dev_info = dev_entry->value; |
754 | dev_entry = dev_entry->next; | |
755 | ||
52e7c241 | 756 | states = g_malloc0(sizeof(BlkTransactionStates)); |
8802d1fd JC |
757 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, states, entry); |
758 | ||
52e7c241 PB |
759 | switch (dev_info->kind) { |
760 | case BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: | |
761 | device = dev_info->blockdev_snapshot_sync->device; | |
bc8b094f PB |
762 | if (!dev_info->blockdev_snapshot_sync->has_mode) { |
763 | dev_info->blockdev_snapshot_sync->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
764 | } | |
765 | new_image_file = dev_info->blockdev_snapshot_sync->snapshot_file; | |
52e7c241 PB |
766 | if (dev_info->blockdev_snapshot_sync->has_format) { |
767 | format = dev_info->blockdev_snapshot_sync->format; | |
768 | } | |
bc8b094f | 769 | mode = dev_info->blockdev_snapshot_sync->mode; |
52e7c241 PB |
770 | break; |
771 | default: | |
772 | abort(); | |
773 | } | |
8802d1fd | 774 | |
52e7c241 PB |
775 | drv = bdrv_find_format(format); |
776 | if (!drv) { | |
777 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
778 | goto delete_and_fail; | |
779 | } | |
780 | ||
781 | states->old_bs = bdrv_find(device); | |
8802d1fd | 782 | if (!states->old_bs) { |
52e7c241 | 783 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
8802d1fd JC |
784 | goto delete_and_fail; |
785 | } | |
786 | ||
e86fe18a PB |
787 | if (!bdrv_is_inserted(states->old_bs)) { |
788 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
789 | goto delete_and_fail; | |
790 | } | |
791 | ||
8802d1fd | 792 | if (bdrv_in_use(states->old_bs)) { |
52e7c241 | 793 | error_set(errp, QERR_DEVICE_IN_USE, device); |
8802d1fd JC |
794 | goto delete_and_fail; |
795 | } | |
796 | ||
e86fe18a | 797 | if (!bdrv_is_read_only(states->old_bs)) { |
8802d1fd JC |
798 | if (bdrv_flush(states->old_bs)) { |
799 | error_set(errp, QERR_IO_ERROR); | |
800 | goto delete_and_fail; | |
801 | } | |
802 | } | |
803 | ||
8802d1fd JC |
804 | flags = states->old_bs->open_flags; |
805 | ||
52e7c241 | 806 | proto_drv = bdrv_find_protocol(new_image_file); |
8802d1fd JC |
807 | if (!proto_drv) { |
808 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
809 | goto delete_and_fail; | |
810 | } | |
811 | ||
812 | /* create new image w/backing file */ | |
bc8b094f | 813 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
43e17041 LC |
814 | bdrv_img_create(new_image_file, format, |
815 | states->old_bs->filename, | |
816 | states->old_bs->drv->format_name, | |
f382d43a | 817 | NULL, -1, flags, &local_err, false); |
43e17041 LC |
818 | if (error_is_set(&local_err)) { |
819 | error_propagate(errp, local_err); | |
bc8b094f PB |
820 | goto delete_and_fail; |
821 | } | |
8802d1fd JC |
822 | } |
823 | ||
824 | /* We will manually add the backing_hd field to the bs later */ | |
825 | states->new_bs = bdrv_new(""); | |
de9c0cec KW |
826 | /* TODO Inherit bs->options or only take explicit options with an |
827 | * extended QMP command? */ | |
828 | ret = bdrv_open(states->new_bs, new_image_file, NULL, | |
8802d1fd JC |
829 | flags | BDRV_O_NO_BACKING, drv); |
830 | if (ret != 0) { | |
52e7c241 | 831 | error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file); |
8802d1fd JC |
832 | goto delete_and_fail; |
833 | } | |
834 | } | |
835 | ||
836 | ||
837 | /* Now we are going to do the actual pivot. Everything up to this point | |
838 | * is reversible, but we are committed at this point */ | |
839 | QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) { | |
840 | /* This removes our old bs from the bdrv_states, and adds the new bs */ | |
841 | bdrv_append(states->new_bs, states->old_bs); | |
870f5681 JC |
842 | /* We don't need (or want) to use the transactional |
843 | * bdrv_reopen_multiple() across all the entries at once, because we | |
844 | * don't want to abort all of them if one of them fails the reopen */ | |
845 | bdrv_reopen(states->new_bs, states->new_bs->open_flags & ~BDRV_O_RDWR, | |
846 | NULL); | |
8802d1fd JC |
847 | } |
848 | ||
849 | /* success */ | |
850 | goto exit; | |
851 | ||
852 | delete_and_fail: | |
853 | /* | |
854 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
855 | * the original bs for all images | |
856 | */ | |
857 | QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) { | |
858 | if (states->new_bs) { | |
859 | bdrv_delete(states->new_bs); | |
860 | } | |
861 | } | |
862 | exit: | |
622d2419 | 863 | QSIMPLEQ_FOREACH_SAFE(states, &snap_bdrv_states, entry, next) { |
8802d1fd JC |
864 | g_free(states); |
865 | } | |
8802d1fd JC |
866 | } |
867 | ||
868 | ||
92d48558 | 869 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 870 | { |
2d3735d3 SH |
871 | if (bdrv_in_use(bs)) { |
872 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
873 | return; | |
874 | } | |
2c6942fa | 875 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
876 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
877 | return; | |
ea8f942f | 878 | } |
92d48558 | 879 | |
025ccaa7 PB |
880 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
881 | bdrv_dev_eject_request(bs, force); | |
882 | if (!force) { | |
92d48558 LC |
883 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
884 | return; | |
025ccaa7 | 885 | } |
666daa68 | 886 | } |
92d48558 | 887 | |
3b5276b5 | 888 | bdrv_close(bs); |
666daa68 MA |
889 | } |
890 | ||
c245b6a3 | 891 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
892 | { |
893 | BlockDriverState *bs; | |
666daa68 | 894 | |
c245b6a3 | 895 | bs = bdrv_find(device); |
666daa68 | 896 | if (!bs) { |
c245b6a3 LC |
897 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
898 | return; | |
92d48558 LC |
899 | } |
900 | ||
c245b6a3 | 901 | eject_device(bs, force, errp); |
666daa68 MA |
902 | } |
903 | ||
a4dea8a9 | 904 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
905 | { |
906 | BlockDriverState *bs; | |
907 | int err; | |
908 | ||
a4dea8a9 | 909 | bs = bdrv_find(device); |
666daa68 | 910 | if (!bs) { |
a4dea8a9 LC |
911 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
912 | return; | |
666daa68 MA |
913 | } |
914 | ||
a4dea8a9 | 915 | err = bdrv_set_key(bs, password); |
666daa68 | 916 | if (err == -EINVAL) { |
a4dea8a9 LC |
917 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
918 | return; | |
666daa68 | 919 | } else if (err < 0) { |
a4dea8a9 LC |
920 | error_set(errp, QERR_INVALID_PASSWORD); |
921 | return; | |
666daa68 | 922 | } |
666daa68 MA |
923 | } |
924 | ||
333a96ec LC |
925 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
926 | int bdrv_flags, BlockDriver *drv, | |
927 | const char *password, Error **errp) | |
928 | { | |
de9c0cec | 929 | if (bdrv_open(bs, filename, NULL, bdrv_flags, drv) < 0) { |
333a96ec LC |
930 | error_set(errp, QERR_OPEN_FILE_FAILED, filename); |
931 | return; | |
932 | } | |
933 | ||
934 | if (bdrv_key_required(bs)) { | |
935 | if (password) { | |
936 | if (bdrv_set_key(bs, password) < 0) { | |
937 | error_set(errp, QERR_INVALID_PASSWORD); | |
938 | } | |
939 | } else { | |
940 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
941 | bdrv_get_encrypted_filename(bs)); | |
942 | } | |
943 | } else if (password) { | |
944 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
945 | } | |
946 | } | |
947 | ||
948 | void qmp_change_blockdev(const char *device, const char *filename, | |
949 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
950 | { |
951 | BlockDriverState *bs; | |
952 | BlockDriver *drv = NULL; | |
953 | int bdrv_flags; | |
92d48558 | 954 | Error *err = NULL; |
666daa68 MA |
955 | |
956 | bs = bdrv_find(device); | |
957 | if (!bs) { | |
333a96ec LC |
958 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
959 | return; | |
666daa68 | 960 | } |
333a96ec LC |
961 | |
962 | if (format) { | |
963 | drv = bdrv_find_whitelisted_format(format); | |
666daa68 | 964 | if (!drv) { |
333a96ec LC |
965 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
966 | return; | |
666daa68 MA |
967 | } |
968 | } | |
333a96ec | 969 | |
92d48558 LC |
970 | eject_device(bs, 0, &err); |
971 | if (error_is_set(&err)) { | |
333a96ec LC |
972 | error_propagate(errp, err); |
973 | return; | |
666daa68 | 974 | } |
333a96ec | 975 | |
528f7663 | 976 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 977 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
978 | |
979 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 980 | } |
9063f814 | 981 | |
727f005e | 982 | /* throttling disk I/O limits */ |
80047da5 LC |
983 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
984 | int64_t bps_wr, int64_t iops, int64_t iops_rd, | |
985 | int64_t iops_wr, Error **errp) | |
727f005e ZYW |
986 | { |
987 | BlockIOLimit io_limits; | |
727f005e ZYW |
988 | BlockDriverState *bs; |
989 | ||
80047da5 | 990 | bs = bdrv_find(device); |
727f005e | 991 | if (!bs) { |
80047da5 LC |
992 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
993 | return; | |
727f005e ZYW |
994 | } |
995 | ||
80047da5 LC |
996 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = bps; |
997 | io_limits.bps[BLOCK_IO_LIMIT_READ] = bps_rd; | |
998 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = bps_wr; | |
999 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL]= iops; | |
1000 | io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd; | |
1001 | io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr; | |
727f005e | 1002 | |
c546194f | 1003 | if (!do_check_io_limits(&io_limits, errp)) { |
80047da5 | 1004 | return; |
727f005e ZYW |
1005 | } |
1006 | ||
1007 | bs->io_limits = io_limits; | |
1008 | bs->slice_time = BLOCK_IO_SLICE_TIME; | |
1009 | ||
1010 | if (!bs->io_limits_enabled && bdrv_io_limits_enabled(bs)) { | |
1011 | bdrv_io_limits_enable(bs); | |
1012 | } else if (bs->io_limits_enabled && !bdrv_io_limits_enabled(bs)) { | |
1013 | bdrv_io_limits_disable(bs); | |
1014 | } else { | |
1015 | if (bs->block_timer) { | |
1016 | qemu_mod_timer(bs->block_timer, qemu_get_clock_ns(vm_clock)); | |
1017 | } | |
1018 | } | |
727f005e ZYW |
1019 | } |
1020 | ||
9063f814 RH |
1021 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1022 | { | |
1023 | const char *id = qdict_get_str(qdict, "id"); | |
1024 | BlockDriverState *bs; | |
9063f814 RH |
1025 | |
1026 | bs = bdrv_find(id); | |
1027 | if (!bs) { | |
1028 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1029 | return -1; | |
1030 | } | |
8591675f MT |
1031 | if (bdrv_in_use(bs)) { |
1032 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1033 | return -1; | |
1034 | } | |
9063f814 RH |
1035 | |
1036 | /* quiesce block driver; prevent further io */ | |
922453bc | 1037 | bdrv_drain_all(); |
9063f814 RH |
1038 | bdrv_flush(bs); |
1039 | bdrv_close(bs); | |
1040 | ||
fa879d62 | 1041 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1042 | * then we need to make the drive anonymous until the device |
1043 | * can be removed. If this is a drive with no device backing | |
1044 | * then we can just get rid of the block driver state right here. | |
1045 | */ | |
fa879d62 | 1046 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 RH |
1047 | bdrv_make_anon(bs); |
1048 | } else { | |
1049 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1050 | } |
1051 | ||
9063f814 RH |
1052 | return 0; |
1053 | } | |
6d4a2b3a | 1054 | |
5e7caacb | 1055 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1056 | { |
6d4a2b3a CH |
1057 | BlockDriverState *bs; |
1058 | ||
1059 | bs = bdrv_find(device); | |
1060 | if (!bs) { | |
5e7caacb LC |
1061 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1062 | return; | |
6d4a2b3a CH |
1063 | } |
1064 | ||
1065 | if (size < 0) { | |
939a1cc3 | 1066 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1067 | return; |
6d4a2b3a CH |
1068 | } |
1069 | ||
939a1cc3 SH |
1070 | switch (bdrv_truncate(bs, size)) { |
1071 | case 0: | |
1072 | break; | |
1073 | case -ENOMEDIUM: | |
1074 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1075 | break; | |
1076 | case -ENOTSUP: | |
1077 | error_set(errp, QERR_UNSUPPORTED); | |
1078 | break; | |
1079 | case -EACCES: | |
1080 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1081 | break; | |
1082 | case -EBUSY: | |
1083 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1084 | break; | |
1085 | default: | |
5e7caacb | 1086 | error_set(errp, QERR_UNDEFINED_ERROR); |
939a1cc3 | 1087 | break; |
6d4a2b3a | 1088 | } |
6d4a2b3a | 1089 | } |
12bd451f | 1090 | |
9abf2dba | 1091 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1092 | { |
1093 | BlockDriverState *bs = opaque; | |
1094 | QObject *obj; | |
1095 | ||
9abf2dba | 1096 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1097 | |
1098 | assert(bs->job); | |
1099 | obj = qobject_from_block_job(bs->job); | |
1100 | if (ret < 0) { | |
1101 | QDict *dict = qobject_to_qdict(obj); | |
1102 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1103 | } | |
1104 | ||
370521a1 SH |
1105 | if (block_job_is_cancelled(bs->job)) { |
1106 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1107 | } else { | |
1108 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1109 | } | |
12bd451f | 1110 | qobject_decref(obj); |
aa398a5c SH |
1111 | |
1112 | drive_put_ref_bh_schedule(drive_get_by_blockdev(bs)); | |
12bd451f SH |
1113 | } |
1114 | ||
1115 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1116 | const char *base, bool has_speed, int64_t speed, |
1117 | bool has_on_error, BlockdevOnError on_error, | |
1118 | Error **errp) | |
12bd451f SH |
1119 | { |
1120 | BlockDriverState *bs; | |
c8c3080f | 1121 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1122 | Error *local_err = NULL; |
12bd451f | 1123 | |
1d809098 PB |
1124 | if (!has_on_error) { |
1125 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1126 | } | |
1127 | ||
12bd451f SH |
1128 | bs = bdrv_find(device); |
1129 | if (!bs) { | |
1130 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1131 | return; | |
1132 | } | |
1133 | ||
12bd451f | 1134 | if (base) { |
c8c3080f MT |
1135 | base_bs = bdrv_find_backing_image(bs, base); |
1136 | if (base_bs == NULL) { | |
1137 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1138 | return; | |
1139 | } | |
12bd451f SH |
1140 | } |
1141 | ||
c83c66c3 | 1142 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1143 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1144 | if (error_is_set(&local_err)) { |
1145 | error_propagate(errp, local_err); | |
1146 | return; | |
12bd451f SH |
1147 | } |
1148 | ||
aa398a5c SH |
1149 | /* Grab a reference so hotplug does not delete the BlockDriverState from |
1150 | * underneath us. | |
1151 | */ | |
1152 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1153 | ||
12bd451f SH |
1154 | trace_qmp_block_stream(bs, bs->job); |
1155 | } | |
2d47c6e9 | 1156 | |
ed61fc10 JC |
1157 | void qmp_block_commit(const char *device, |
1158 | bool has_base, const char *base, const char *top, | |
1159 | bool has_speed, int64_t speed, | |
1160 | Error **errp) | |
1161 | { | |
1162 | BlockDriverState *bs; | |
1163 | BlockDriverState *base_bs, *top_bs; | |
1164 | Error *local_err = NULL; | |
1165 | /* This will be part of the QMP command, if/when the | |
1166 | * BlockdevOnError change for blkmirror makes it in | |
1167 | */ | |
92aa5c6d | 1168 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1169 | |
1170 | /* drain all i/o before commits */ | |
1171 | bdrv_drain_all(); | |
1172 | ||
1173 | bs = bdrv_find(device); | |
1174 | if (!bs) { | |
1175 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1176 | return; | |
1177 | } | |
ed61fc10 JC |
1178 | |
1179 | /* default top_bs is the active layer */ | |
1180 | top_bs = bs; | |
1181 | ||
1182 | if (top) { | |
1183 | if (strcmp(bs->filename, top) != 0) { | |
1184 | top_bs = bdrv_find_backing_image(bs, top); | |
1185 | } | |
1186 | } | |
1187 | ||
1188 | if (top_bs == NULL) { | |
1189 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1190 | return; | |
1191 | } | |
1192 | ||
d5208c45 JC |
1193 | if (has_base && base) { |
1194 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1195 | } else { | |
1196 | base_bs = bdrv_find_base(top_bs); | |
1197 | } | |
1198 | ||
1199 | if (base_bs == NULL) { | |
1200 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1201 | return; | |
1202 | } | |
1203 | ||
ed61fc10 JC |
1204 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1205 | &local_err); | |
1206 | if (local_err != NULL) { | |
1207 | error_propagate(errp, local_err); | |
1208 | return; | |
1209 | } | |
1210 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1211 | * underneath us. | |
1212 | */ | |
1213 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1214 | } | |
1215 | ||
08e4ed6c PB |
1216 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1217 | ||
d9b902db PB |
1218 | void qmp_drive_mirror(const char *device, const char *target, |
1219 | bool has_format, const char *format, | |
1220 | enum MirrorSyncMode sync, | |
1221 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1222 | bool has_speed, int64_t speed, |
eee13dfe | 1223 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1224 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1225 | bool has_on_source_error, BlockdevOnError on_source_error, |
1226 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1227 | Error **errp) | |
d9b902db | 1228 | { |
d9b902db PB |
1229 | BlockDriverState *bs; |
1230 | BlockDriverState *source, *target_bs; | |
1231 | BlockDriver *proto_drv; | |
1232 | BlockDriver *drv = NULL; | |
1233 | Error *local_err = NULL; | |
1234 | int flags; | |
1235 | uint64_t size; | |
1236 | int ret; | |
1237 | ||
1238 | if (!has_speed) { | |
1239 | speed = 0; | |
1240 | } | |
b952b558 PB |
1241 | if (!has_on_source_error) { |
1242 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1243 | } | |
1244 | if (!has_on_target_error) { | |
1245 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1246 | } | |
d9b902db PB |
1247 | if (!has_mode) { |
1248 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1249 | } | |
eee13dfe PB |
1250 | if (!has_granularity) { |
1251 | granularity = 0; | |
1252 | } | |
08e4ed6c PB |
1253 | if (!has_buf_size) { |
1254 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1255 | } | |
1256 | ||
eee13dfe PB |
1257 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1258 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1259 | return; | |
1260 | } | |
1261 | if (granularity & (granularity - 1)) { | |
1262 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1263 | return; | |
1264 | } | |
d9b902db PB |
1265 | |
1266 | bs = bdrv_find(device); | |
1267 | if (!bs) { | |
1268 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1269 | return; | |
1270 | } | |
1271 | ||
1272 | if (!bdrv_is_inserted(bs)) { | |
1273 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1274 | return; | |
1275 | } | |
1276 | ||
1277 | if (!has_format) { | |
1278 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1279 | } | |
1280 | if (format) { | |
1281 | drv = bdrv_find_format(format); | |
1282 | if (!drv) { | |
1283 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1284 | return; | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | if (bdrv_in_use(bs)) { | |
1289 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1290 | return; | |
1291 | } | |
1292 | ||
1293 | flags = bs->open_flags | BDRV_O_RDWR; | |
1294 | source = bs->backing_hd; | |
1295 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
1296 | sync = MIRROR_SYNC_MODE_FULL; | |
1297 | } | |
1298 | ||
1299 | proto_drv = bdrv_find_protocol(target); | |
1300 | if (!proto_drv) { | |
1301 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1302 | return; | |
1303 | } | |
1304 | ||
86899072 VI |
1305 | bdrv_get_geometry(bs, &size); |
1306 | size *= 512; | |
d9b902db PB |
1307 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
1308 | /* create new image w/o backing file */ | |
1309 | assert(format && drv); | |
cf8f2426 | 1310 | bdrv_img_create(target, format, |
f382d43a | 1311 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
1312 | } else { |
1313 | switch (mode) { | |
1314 | case NEW_IMAGE_MODE_EXISTING: | |
1315 | ret = 0; | |
1316 | break; | |
1317 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
1318 | /* create new image with backing file */ | |
cf8f2426 LC |
1319 | bdrv_img_create(target, format, |
1320 | source->filename, | |
1321 | source->drv->format_name, | |
f382d43a | 1322 | NULL, size, flags, &local_err, false); |
d9b902db PB |
1323 | break; |
1324 | default: | |
1325 | abort(); | |
1326 | } | |
1327 | } | |
1328 | ||
cf8f2426 LC |
1329 | if (error_is_set(&local_err)) { |
1330 | error_propagate(errp, local_err); | |
d9b902db PB |
1331 | return; |
1332 | } | |
1333 | ||
b812f671 PB |
1334 | /* Mirroring takes care of copy-on-write using the source's backing |
1335 | * file. | |
1336 | */ | |
d9b902db | 1337 | target_bs = bdrv_new(""); |
de9c0cec | 1338 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv); |
d9b902db PB |
1339 | |
1340 | if (ret < 0) { | |
1341 | bdrv_delete(target_bs); | |
1342 | error_set(errp, QERR_OPEN_FILE_FAILED, target); | |
1343 | return; | |
1344 | } | |
1345 | ||
08e4ed6c | 1346 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 1347 | on_source_error, on_target_error, |
b952b558 | 1348 | block_job_cb, bs, &local_err); |
d9b902db PB |
1349 | if (local_err != NULL) { |
1350 | bdrv_delete(target_bs); | |
1351 | error_propagate(errp, local_err); | |
1352 | return; | |
1353 | } | |
1354 | ||
1355 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1356 | * underneath us. | |
1357 | */ | |
1358 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1359 | } | |
1360 | ||
2d47c6e9 SH |
1361 | static BlockJob *find_block_job(const char *device) |
1362 | { | |
1363 | BlockDriverState *bs; | |
1364 | ||
1365 | bs = bdrv_find(device); | |
1366 | if (!bs || !bs->job) { | |
1367 | return NULL; | |
1368 | } | |
1369 | return bs->job; | |
1370 | } | |
1371 | ||
882ec7ce | 1372 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
1373 | { |
1374 | BlockJob *job = find_block_job(device); | |
1375 | ||
1376 | if (!job) { | |
7ef15070 | 1377 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
1378 | return; |
1379 | } | |
1380 | ||
882ec7ce | 1381 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 1382 | } |
370521a1 | 1383 | |
6e37fb81 PB |
1384 | void qmp_block_job_cancel(const char *device, |
1385 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
1386 | { |
1387 | BlockJob *job = find_block_job(device); | |
1388 | ||
6e37fb81 PB |
1389 | if (!has_force) { |
1390 | force = false; | |
1391 | } | |
1392 | ||
370521a1 | 1393 | if (!job) { |
7ef15070 | 1394 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
1395 | return; |
1396 | } | |
6e37fb81 | 1397 | if (job->paused && !force) { |
8acc72a4 PB |
1398 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
1399 | return; | |
1400 | } | |
370521a1 SH |
1401 | |
1402 | trace_qmp_block_job_cancel(job); | |
1403 | block_job_cancel(job); | |
1404 | } | |
fb5458cd | 1405 | |
6e37fb81 PB |
1406 | void qmp_block_job_pause(const char *device, Error **errp) |
1407 | { | |
1408 | BlockJob *job = find_block_job(device); | |
1409 | ||
1410 | if (!job) { | |
1411 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1412 | return; | |
1413 | } | |
1414 | ||
1415 | trace_qmp_block_job_pause(job); | |
1416 | block_job_pause(job); | |
1417 | } | |
1418 | ||
1419 | void qmp_block_job_resume(const char *device, Error **errp) | |
1420 | { | |
1421 | BlockJob *job = find_block_job(device); | |
1422 | ||
1423 | if (!job) { | |
1424 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1425 | return; | |
1426 | } | |
1427 | ||
1428 | trace_qmp_block_job_resume(job); | |
1429 | block_job_resume(job); | |
1430 | } | |
1431 | ||
aeae883b PB |
1432 | void qmp_block_job_complete(const char *device, Error **errp) |
1433 | { | |
1434 | BlockJob *job = find_block_job(device); | |
1435 | ||
1436 | if (!job) { | |
1437 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1438 | return; | |
1439 | } | |
1440 | ||
1441 | trace_qmp_block_job_complete(job); | |
1442 | block_job_complete(job, errp); | |
1443 | } | |
1444 | ||
fb5458cd SH |
1445 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
1446 | { | |
1447 | BlockJobInfoList **prev = opaque; | |
1448 | BlockJob *job = bs->job; | |
1449 | ||
1450 | if (job) { | |
30e628b7 PB |
1451 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
1452 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
1453 | (*prev)->next = elem; |
1454 | *prev = elem; | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
1459 | { | |
1460 | /* Dummy is a fake list element for holding the head pointer */ | |
1461 | BlockJobInfoList dummy = {}; | |
1462 | BlockJobInfoList *prev = &dummy; | |
1463 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
1464 | return dummy.next; | |
1465 | } | |
4d454574 PB |
1466 | |
1467 | QemuOptsList qemu_drive_opts = { | |
1468 | .name = "drive", | |
1469 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
1470 | .desc = { | |
1471 | { | |
1472 | .name = "bus", | |
1473 | .type = QEMU_OPT_NUMBER, | |
1474 | .help = "bus number", | |
1475 | },{ | |
1476 | .name = "unit", | |
1477 | .type = QEMU_OPT_NUMBER, | |
1478 | .help = "unit number (i.e. lun for scsi)", | |
1479 | },{ | |
1480 | .name = "if", | |
1481 | .type = QEMU_OPT_STRING, | |
1482 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
1483 | },{ | |
1484 | .name = "index", | |
1485 | .type = QEMU_OPT_NUMBER, | |
1486 | .help = "index number", | |
1487 | },{ | |
1488 | .name = "cyls", | |
1489 | .type = QEMU_OPT_NUMBER, | |
1490 | .help = "number of cylinders (ide disk geometry)", | |
1491 | },{ | |
1492 | .name = "heads", | |
1493 | .type = QEMU_OPT_NUMBER, | |
1494 | .help = "number of heads (ide disk geometry)", | |
1495 | },{ | |
1496 | .name = "secs", | |
1497 | .type = QEMU_OPT_NUMBER, | |
1498 | .help = "number of sectors (ide disk geometry)", | |
1499 | },{ | |
1500 | .name = "trans", | |
1501 | .type = QEMU_OPT_STRING, | |
1502 | .help = "chs translation (auto, lba. none)", | |
1503 | },{ | |
1504 | .name = "media", | |
1505 | .type = QEMU_OPT_STRING, | |
1506 | .help = "media type (disk, cdrom)", | |
1507 | },{ | |
1508 | .name = "snapshot", | |
1509 | .type = QEMU_OPT_BOOL, | |
1510 | .help = "enable/disable snapshot mode", | |
1511 | },{ | |
1512 | .name = "file", | |
1513 | .type = QEMU_OPT_STRING, | |
1514 | .help = "disk image", | |
a9384aff PB |
1515 | },{ |
1516 | .name = "discard", | |
1517 | .type = QEMU_OPT_STRING, | |
1518 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 PB |
1519 | },{ |
1520 | .name = "cache", | |
1521 | .type = QEMU_OPT_STRING, | |
1522 | .help = "host cache usage (none, writeback, writethrough, " | |
1523 | "directsync, unsafe)", | |
1524 | },{ | |
1525 | .name = "aio", | |
1526 | .type = QEMU_OPT_STRING, | |
1527 | .help = "host AIO implementation (threads, native)", | |
1528 | },{ | |
1529 | .name = "format", | |
1530 | .type = QEMU_OPT_STRING, | |
1531 | .help = "disk format (raw, qcow2, ...)", | |
1532 | },{ | |
1533 | .name = "serial", | |
1534 | .type = QEMU_OPT_STRING, | |
1535 | .help = "disk serial number", | |
1536 | },{ | |
1537 | .name = "rerror", | |
1538 | .type = QEMU_OPT_STRING, | |
1539 | .help = "read error action", | |
1540 | },{ | |
1541 | .name = "werror", | |
1542 | .type = QEMU_OPT_STRING, | |
1543 | .help = "write error action", | |
1544 | },{ | |
1545 | .name = "addr", | |
1546 | .type = QEMU_OPT_STRING, | |
1547 | .help = "pci address (virtio only)", | |
1548 | },{ | |
1549 | .name = "readonly", | |
1550 | .type = QEMU_OPT_BOOL, | |
1551 | .help = "open drive file as read-only", | |
1552 | },{ | |
1553 | .name = "iops", | |
1554 | .type = QEMU_OPT_NUMBER, | |
1555 | .help = "limit total I/O operations per second", | |
1556 | },{ | |
1557 | .name = "iops_rd", | |
1558 | .type = QEMU_OPT_NUMBER, | |
1559 | .help = "limit read operations per second", | |
1560 | },{ | |
1561 | .name = "iops_wr", | |
1562 | .type = QEMU_OPT_NUMBER, | |
1563 | .help = "limit write operations per second", | |
1564 | },{ | |
1565 | .name = "bps", | |
1566 | .type = QEMU_OPT_NUMBER, | |
1567 | .help = "limit total bytes per second", | |
1568 | },{ | |
1569 | .name = "bps_rd", | |
1570 | .type = QEMU_OPT_NUMBER, | |
1571 | .help = "limit read bytes per second", | |
1572 | },{ | |
1573 | .name = "bps_wr", | |
1574 | .type = QEMU_OPT_NUMBER, | |
1575 | .help = "limit write bytes per second", | |
1576 | },{ | |
1577 | .name = "copy-on-read", | |
1578 | .type = QEMU_OPT_BOOL, | |
1579 | .help = "copy read data from backing file into image file", | |
1580 | },{ | |
1581 | .name = "boot", | |
1582 | .type = QEMU_OPT_BOOL, | |
1583 | .help = "(deprecated, ignored)", | |
1584 | }, | |
1585 | { /* end of list */ } | |
1586 | }, | |
1587 | }; |