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Commit | Line | Data |
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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. | |
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); |
7267c094 | 194 | g_free(dinfo); |
666daa68 MA |
195 | } |
196 | ||
84fb3925 MT |
197 | void drive_put_ref(DriveInfo *dinfo) |
198 | { | |
199 | assert(dinfo->refcount); | |
200 | if (--dinfo->refcount == 0) { | |
201 | drive_uninit(dinfo); | |
202 | } | |
203 | } | |
204 | ||
205 | void drive_get_ref(DriveInfo *dinfo) | |
206 | { | |
207 | dinfo->refcount++; | |
208 | } | |
209 | ||
aa398a5c SH |
210 | typedef struct { |
211 | QEMUBH *bh; | |
212 | DriveInfo *dinfo; | |
213 | } DrivePutRefBH; | |
214 | ||
215 | static void drive_put_ref_bh(void *opaque) | |
216 | { | |
217 | DrivePutRefBH *s = opaque; | |
218 | ||
219 | drive_put_ref(s->dinfo); | |
220 | qemu_bh_delete(s->bh); | |
221 | g_free(s); | |
222 | } | |
223 | ||
224 | /* | |
225 | * Release a drive reference in a BH | |
226 | * | |
227 | * It is not possible to use drive_put_ref() from a callback function when the | |
228 | * callers still need the drive. In such cases we schedule a BH to release the | |
229 | * reference. | |
230 | */ | |
231 | static void drive_put_ref_bh_schedule(DriveInfo *dinfo) | |
232 | { | |
233 | DrivePutRefBH *s; | |
234 | ||
235 | s = g_new(DrivePutRefBH, 1); | |
236 | s->bh = qemu_bh_new(drive_put_ref_bh, s); | |
237 | s->dinfo = dinfo; | |
238 | qemu_bh_schedule(s->bh); | |
239 | } | |
240 | ||
1ceee0d5 | 241 | static int parse_block_error_action(const char *buf, bool is_read) |
666daa68 MA |
242 | { |
243 | if (!strcmp(buf, "ignore")) { | |
92aa5c6d | 244 | return BLOCKDEV_ON_ERROR_IGNORE; |
666daa68 | 245 | } else if (!is_read && !strcmp(buf, "enospc")) { |
92aa5c6d | 246 | return BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 | 247 | } else if (!strcmp(buf, "stop")) { |
92aa5c6d | 248 | return BLOCKDEV_ON_ERROR_STOP; |
666daa68 | 249 | } else if (!strcmp(buf, "report")) { |
92aa5c6d | 250 | return BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 251 | } else { |
807105a7 MA |
252 | error_report("'%s' invalid %s error action", |
253 | buf, is_read ? "read" : "write"); | |
666daa68 MA |
254 | return -1; |
255 | } | |
256 | } | |
257 | ||
c546194f | 258 | static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp) |
0563e191 ZYW |
259 | { |
260 | bool bps_flag; | |
261 | bool iops_flag; | |
262 | ||
263 | assert(io_limits); | |
264 | ||
265 | bps_flag = (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] != 0) | |
266 | && ((io_limits->bps[BLOCK_IO_LIMIT_READ] != 0) | |
267 | || (io_limits->bps[BLOCK_IO_LIMIT_WRITE] != 0)); | |
268 | iops_flag = (io_limits->iops[BLOCK_IO_LIMIT_TOTAL] != 0) | |
269 | && ((io_limits->iops[BLOCK_IO_LIMIT_READ] != 0) | |
270 | || (io_limits->iops[BLOCK_IO_LIMIT_WRITE] != 0)); | |
271 | if (bps_flag || iops_flag) { | |
c546194f SH |
272 | error_setg(errp, "bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) " |
273 | "cannot be used at the same time"); | |
0563e191 ZYW |
274 | return false; |
275 | } | |
276 | ||
7d81c141 SH |
277 | if (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] < 0 || |
278 | io_limits->bps[BLOCK_IO_LIMIT_WRITE] < 0 || | |
279 | io_limits->bps[BLOCK_IO_LIMIT_READ] < 0 || | |
280 | io_limits->iops[BLOCK_IO_LIMIT_TOTAL] < 0 || | |
281 | io_limits->iops[BLOCK_IO_LIMIT_WRITE] < 0 || | |
282 | io_limits->iops[BLOCK_IO_LIMIT_READ] < 0) { | |
283 | error_setg(errp, "bps and iops values must be 0 or greater"); | |
284 | return false; | |
285 | } | |
286 | ||
0563e191 ZYW |
287 | return true; |
288 | } | |
289 | ||
2d0d2837 | 290 | DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType block_default_type) |
666daa68 MA |
291 | { |
292 | const char *buf; | |
293 | const char *file = NULL; | |
666daa68 MA |
294 | const char *serial; |
295 | const char *mediastr = ""; | |
296 | BlockInterfaceType type; | |
297 | enum { MEDIA_DISK, MEDIA_CDROM } media; | |
298 | int bus_id, unit_id; | |
299 | int cyls, heads, secs, translation; | |
300 | BlockDriver *drv = NULL; | |
301 | int max_devs; | |
302 | int index; | |
303 | int ro = 0; | |
304 | int bdrv_flags = 0; | |
305 | int on_read_error, on_write_error; | |
306 | const char *devaddr; | |
307 | DriveInfo *dinfo; | |
0563e191 | 308 | BlockIOLimit io_limits; |
666daa68 | 309 | int snapshot = 0; |
fb0490f6 | 310 | bool copy_on_read; |
666daa68 | 311 | int ret; |
c546194f | 312 | Error *error = NULL; |
666daa68 | 313 | |
666daa68 | 314 | translation = BIOS_ATA_TRANSLATION_AUTO; |
666daa68 MA |
315 | media = MEDIA_DISK; |
316 | ||
317 | /* extract parameters */ | |
318 | bus_id = qemu_opt_get_number(opts, "bus", 0); | |
319 | unit_id = qemu_opt_get_number(opts, "unit", -1); | |
320 | index = qemu_opt_get_number(opts, "index", -1); | |
321 | ||
322 | cyls = qemu_opt_get_number(opts, "cyls", 0); | |
323 | heads = qemu_opt_get_number(opts, "heads", 0); | |
324 | secs = qemu_opt_get_number(opts, "secs", 0); | |
325 | ||
326 | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); | |
327 | ro = qemu_opt_get_bool(opts, "readonly", 0); | |
fb0490f6 | 328 | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
666daa68 MA |
329 | |
330 | file = qemu_opt_get(opts, "file"); | |
331 | serial = qemu_opt_get(opts, "serial"); | |
332 | ||
333 | if ((buf = qemu_opt_get(opts, "if")) != NULL) { | |
1960966d MA |
334 | for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++) |
335 | ; | |
336 | if (type == IF_COUNT) { | |
807105a7 | 337 | error_report("unsupported bus type '%s'", buf); |
666daa68 MA |
338 | return NULL; |
339 | } | |
2d3999fe | 340 | } else { |
2d0d2837 | 341 | type = block_default_type; |
666daa68 | 342 | } |
2d3999fe | 343 | |
1960966d | 344 | max_devs = if_max_devs[type]; |
666daa68 MA |
345 | |
346 | if (cyls || heads || secs) { | |
aaea3f36 | 347 | if (cyls < 1) { |
807105a7 | 348 | error_report("invalid physical cyls number"); |
666daa68 MA |
349 | return NULL; |
350 | } | |
aaea3f36 | 351 | if (heads < 1) { |
807105a7 | 352 | error_report("invalid physical heads number"); |
666daa68 MA |
353 | return NULL; |
354 | } | |
aaea3f36 | 355 | if (secs < 1) { |
807105a7 | 356 | error_report("invalid physical secs number"); |
666daa68 MA |
357 | return NULL; |
358 | } | |
359 | } | |
360 | ||
361 | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { | |
362 | if (!cyls) { | |
e4080f9b | 363 | error_report("'%s' trans must be used with cyls, heads and secs", |
807105a7 | 364 | buf); |
666daa68 MA |
365 | return NULL; |
366 | } | |
367 | if (!strcmp(buf, "none")) | |
368 | translation = BIOS_ATA_TRANSLATION_NONE; | |
369 | else if (!strcmp(buf, "lba")) | |
370 | translation = BIOS_ATA_TRANSLATION_LBA; | |
371 | else if (!strcmp(buf, "auto")) | |
372 | translation = BIOS_ATA_TRANSLATION_AUTO; | |
373 | else { | |
807105a7 | 374 | error_report("'%s' invalid translation type", buf); |
666daa68 MA |
375 | return NULL; |
376 | } | |
377 | } | |
378 | ||
379 | if ((buf = qemu_opt_get(opts, "media")) != NULL) { | |
380 | if (!strcmp(buf, "disk")) { | |
381 | media = MEDIA_DISK; | |
382 | } else if (!strcmp(buf, "cdrom")) { | |
383 | if (cyls || secs || heads) { | |
e7ff8f0e | 384 | error_report("CHS can't be set with media=%s", buf); |
666daa68 MA |
385 | return NULL; |
386 | } | |
387 | media = MEDIA_CDROM; | |
388 | } else { | |
807105a7 | 389 | error_report("'%s' invalid media", buf); |
666daa68 MA |
390 | return NULL; |
391 | } | |
392 | } | |
393 | ||
a9384aff PB |
394 | if ((buf = qemu_opt_get(opts, "discard")) != NULL) { |
395 | if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) { | |
396 | error_report("invalid discard option"); | |
397 | return NULL; | |
398 | } | |
399 | } | |
400 | ||
1f212b9d | 401 | bdrv_flags |= BDRV_O_CACHE_WB; |
666daa68 | 402 | if ((buf = qemu_opt_get(opts, "cache")) != NULL) { |
c3993cdc SH |
403 | if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) { |
404 | error_report("invalid cache option"); | |
405 | return NULL; | |
666daa68 MA |
406 | } |
407 | } | |
408 | ||
409 | #ifdef CONFIG_LINUX_AIO | |
410 | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { | |
411 | if (!strcmp(buf, "native")) { | |
412 | bdrv_flags |= BDRV_O_NATIVE_AIO; | |
413 | } else if (!strcmp(buf, "threads")) { | |
414 | /* this is the default */ | |
415 | } else { | |
807105a7 | 416 | error_report("invalid aio option"); |
666daa68 MA |
417 | return NULL; |
418 | } | |
419 | } | |
420 | #endif | |
421 | ||
422 | if ((buf = qemu_opt_get(opts, "format")) != NULL) { | |
c8057f95 PM |
423 | if (is_help_option(buf)) { |
424 | error_printf("Supported formats:"); | |
425 | bdrv_iterate_format(bdrv_format_print, NULL); | |
426 | error_printf("\n"); | |
427 | return NULL; | |
666daa68 MA |
428 | } |
429 | drv = bdrv_find_whitelisted_format(buf); | |
430 | if (!drv) { | |
807105a7 | 431 | error_report("'%s' invalid format", buf); |
666daa68 MA |
432 | return NULL; |
433 | } | |
434 | } | |
435 | ||
0563e191 ZYW |
436 | /* disk I/O throttling */ |
437 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = | |
438 | qemu_opt_get_number(opts, "bps", 0); | |
439 | io_limits.bps[BLOCK_IO_LIMIT_READ] = | |
440 | qemu_opt_get_number(opts, "bps_rd", 0); | |
441 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = | |
442 | qemu_opt_get_number(opts, "bps_wr", 0); | |
443 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL] = | |
444 | qemu_opt_get_number(opts, "iops", 0); | |
445 | io_limits.iops[BLOCK_IO_LIMIT_READ] = | |
446 | qemu_opt_get_number(opts, "iops_rd", 0); | |
447 | io_limits.iops[BLOCK_IO_LIMIT_WRITE] = | |
448 | qemu_opt_get_number(opts, "iops_wr", 0); | |
449 | ||
c546194f SH |
450 | if (!do_check_io_limits(&io_limits, &error)) { |
451 | error_report("%s", error_get_pretty(error)); | |
452 | error_free(error); | |
0563e191 ZYW |
453 | return NULL; |
454 | } | |
455 | ||
0d92d17a JK |
456 | if (qemu_opt_get(opts, "boot") != NULL) { |
457 | fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be " | |
458 | "ignored. Future versions will reject this parameter. Please " | |
459 | "update your scripts.\n"); | |
460 | } | |
461 | ||
92aa5c6d | 462 | on_write_error = BLOCKDEV_ON_ERROR_ENOSPC; |
666daa68 MA |
463 | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
464 | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) { | |
807105a7 | 465 | error_report("werror is not supported by this bus type"); |
666daa68 MA |
466 | return NULL; |
467 | } | |
468 | ||
469 | on_write_error = parse_block_error_action(buf, 0); | |
470 | if (on_write_error < 0) { | |
471 | return NULL; | |
472 | } | |
473 | } | |
474 | ||
92aa5c6d | 475 | on_read_error = BLOCKDEV_ON_ERROR_REPORT; |
666daa68 | 476 | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
5dba48a8 | 477 | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) { |
807105a7 | 478 | error_report("rerror is not supported by this bus type"); |
666daa68 MA |
479 | return NULL; |
480 | } | |
481 | ||
482 | on_read_error = parse_block_error_action(buf, 1); | |
483 | if (on_read_error < 0) { | |
484 | return NULL; | |
485 | } | |
486 | } | |
487 | ||
488 | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { | |
489 | if (type != IF_VIRTIO) { | |
807105a7 | 490 | error_report("addr is not supported by this bus type"); |
666daa68 MA |
491 | return NULL; |
492 | } | |
493 | } | |
494 | ||
495 | /* compute bus and unit according index */ | |
496 | ||
497 | if (index != -1) { | |
498 | if (bus_id != 0 || unit_id != -1) { | |
807105a7 | 499 | error_report("index cannot be used with bus and unit"); |
666daa68 MA |
500 | return NULL; |
501 | } | |
505a7fb1 MA |
502 | bus_id = drive_index_to_bus_id(type, index); |
503 | unit_id = drive_index_to_unit_id(type, index); | |
666daa68 MA |
504 | } |
505 | ||
506 | /* if user doesn't specify a unit_id, | |
507 | * try to find the first free | |
508 | */ | |
509 | ||
510 | if (unit_id == -1) { | |
511 | unit_id = 0; | |
512 | while (drive_get(type, bus_id, unit_id) != NULL) { | |
513 | unit_id++; | |
514 | if (max_devs && unit_id >= max_devs) { | |
515 | unit_id -= max_devs; | |
516 | bus_id++; | |
517 | } | |
518 | } | |
519 | } | |
520 | ||
521 | /* check unit id */ | |
522 | ||
523 | if (max_devs && unit_id >= max_devs) { | |
807105a7 MA |
524 | error_report("unit %d too big (max is %d)", |
525 | unit_id, max_devs - 1); | |
666daa68 MA |
526 | return NULL; |
527 | } | |
528 | ||
529 | /* | |
4e5d9b57 | 530 | * catch multiple definitions |
666daa68 MA |
531 | */ |
532 | ||
533 | if (drive_get(type, bus_id, unit_id) != NULL) { | |
4e5d9b57 MA |
534 | error_report("drive with bus=%d, unit=%d (index=%d) exists", |
535 | bus_id, unit_id, index); | |
666daa68 MA |
536 | return NULL; |
537 | } | |
538 | ||
539 | /* init */ | |
540 | ||
7267c094 | 541 | dinfo = g_malloc0(sizeof(*dinfo)); |
666daa68 | 542 | if ((buf = qemu_opts_id(opts)) != NULL) { |
7267c094 | 543 | dinfo->id = g_strdup(buf); |
666daa68 MA |
544 | } else { |
545 | /* no id supplied -> create one */ | |
7267c094 | 546 | dinfo->id = g_malloc0(32); |
666daa68 MA |
547 | if (type == IF_IDE || type == IF_SCSI) |
548 | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; | |
549 | if (max_devs) | |
550 | snprintf(dinfo->id, 32, "%s%i%s%i", | |
79d21d5b | 551 | if_name[type], bus_id, mediastr, unit_id); |
666daa68 MA |
552 | else |
553 | snprintf(dinfo->id, 32, "%s%s%i", | |
79d21d5b | 554 | if_name[type], mediastr, unit_id); |
666daa68 MA |
555 | } |
556 | dinfo->bdrv = bdrv_new(dinfo->id); | |
80dd1aae KS |
557 | dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0; |
558 | dinfo->bdrv->read_only = ro; | |
666daa68 MA |
559 | dinfo->devaddr = devaddr; |
560 | dinfo->type = type; | |
561 | dinfo->bus = bus_id; | |
562 | dinfo->unit = unit_id; | |
317bb412 MA |
563 | dinfo->cyls = cyls; |
564 | dinfo->heads = heads; | |
565 | dinfo->secs = secs; | |
566 | dinfo->trans = translation; | |
666daa68 | 567 | dinfo->opts = opts; |
84fb3925 | 568 | dinfo->refcount = 1; |
577d0a38 | 569 | dinfo->serial = serial; |
666daa68 MA |
570 | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
571 | ||
abd7f68d MA |
572 | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
573 | ||
0563e191 ZYW |
574 | /* disk I/O throttling */ |
575 | bdrv_set_io_limits(dinfo->bdrv, &io_limits); | |
576 | ||
666daa68 MA |
577 | switch(type) { |
578 | case IF_IDE: | |
579 | case IF_SCSI: | |
580 | case IF_XEN: | |
581 | case IF_NONE: | |
2b584959 | 582 | dinfo->media_cd = media == MEDIA_CDROM; |
666daa68 MA |
583 | break; |
584 | case IF_SD: | |
666daa68 | 585 | case IF_FLOPPY: |
666daa68 MA |
586 | case IF_PFLASH: |
587 | case IF_MTD: | |
588 | break; | |
589 | case IF_VIRTIO: | |
590 | /* add virtio block device */ | |
e478b448 | 591 | opts = qemu_opts_create_nofail(qemu_find_opts("device")); |
eeb9c1b5 AL |
592 | if (arch_type == QEMU_ARCH_S390X) { |
593 | qemu_opt_set(opts, "driver", "virtio-blk-s390"); | |
594 | } else { | |
595 | qemu_opt_set(opts, "driver", "virtio-blk-pci"); | |
596 | } | |
666daa68 MA |
597 | qemu_opt_set(opts, "drive", dinfo->id); |
598 | if (devaddr) | |
599 | qemu_opt_set(opts, "addr", devaddr); | |
600 | break; | |
2292ddae | 601 | default: |
666daa68 MA |
602 | abort(); |
603 | } | |
dd5b0d71 | 604 | if (!file || !*file) { |
319ae529 | 605 | return dinfo; |
666daa68 MA |
606 | } |
607 | if (snapshot) { | |
608 | /* always use cache=unsafe with snapshot */ | |
609 | bdrv_flags &= ~BDRV_O_CACHE_MASK; | |
610 | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); | |
611 | } | |
612 | ||
fb0490f6 SH |
613 | if (copy_on_read) { |
614 | bdrv_flags |= BDRV_O_COPY_ON_READ; | |
615 | } | |
616 | ||
ed9d4205 BC |
617 | if (runstate_check(RUN_STATE_INMIGRATE)) { |
618 | bdrv_flags |= BDRV_O_INCOMING; | |
619 | } | |
620 | ||
666daa68 MA |
621 | if (media == MEDIA_CDROM) { |
622 | /* CDROM is fine for any interface, don't check. */ | |
623 | ro = 1; | |
624 | } else if (ro == 1) { | |
1e9eb78a JJ |
625 | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY && |
626 | type != IF_NONE && type != IF_PFLASH) { | |
807105a7 | 627 | error_report("readonly not supported by this bus type"); |
a9ae2bff | 628 | goto err; |
666daa68 MA |
629 | } |
630 | } | |
631 | ||
632 | bdrv_flags |= ro ? 0 : BDRV_O_RDWR; | |
633 | ||
04d4abe9 SH |
634 | if (ro && copy_on_read) { |
635 | error_report("warning: disabling copy_on_read on readonly drive"); | |
636 | } | |
637 | ||
de9c0cec | 638 | ret = bdrv_open(dinfo->bdrv, file, NULL, bdrv_flags, drv); |
666daa68 | 639 | if (ret < 0) { |
02582abd SW |
640 | if (ret == -EMEDIUMTYPE) { |
641 | error_report("could not open disk image %s: not in %s format", | |
642 | file, drv->format_name); | |
643 | } else { | |
644 | error_report("could not open disk image %s: %s", | |
645 | file, strerror(-ret)); | |
646 | } | |
a9ae2bff | 647 | goto err; |
666daa68 MA |
648 | } |
649 | ||
650 | if (bdrv_key_required(dinfo->bdrv)) | |
651 | autostart = 0; | |
666daa68 | 652 | return dinfo; |
a9ae2bff MA |
653 | |
654 | err: | |
655 | bdrv_delete(dinfo->bdrv); | |
7267c094 | 656 | g_free(dinfo->id); |
a9ae2bff | 657 | QTAILQ_REMOVE(&drives, dinfo, next); |
7267c094 | 658 | g_free(dinfo); |
a9ae2bff | 659 | return NULL; |
666daa68 MA |
660 | } |
661 | ||
662 | void do_commit(Monitor *mon, const QDict *qdict) | |
663 | { | |
666daa68 | 664 | const char *device = qdict_get_str(qdict, "device"); |
6ab4b5ab | 665 | BlockDriverState *bs; |
e8877497 | 666 | int ret; |
666daa68 | 667 | |
6ab4b5ab | 668 | if (!strcmp(device, "all")) { |
e8877497 | 669 | ret = bdrv_commit_all(); |
6ab4b5ab MA |
670 | } else { |
671 | bs = bdrv_find(device); | |
ac59eb95 | 672 | if (!bs) { |
58513bde | 673 | monitor_printf(mon, "Device '%s' not found\n", device); |
ac59eb95 | 674 | return; |
6ab4b5ab | 675 | } |
2d3735d3 | 676 | ret = bdrv_commit(bs); |
58513bde JC |
677 | } |
678 | if (ret < 0) { | |
679 | monitor_printf(mon, "'commit' error for '%s': %s\n", device, | |
680 | strerror(-ret)); | |
666daa68 MA |
681 | } |
682 | } | |
683 | ||
6cc2a415 PB |
684 | static void blockdev_do_action(int kind, void *data, Error **errp) |
685 | { | |
686 | BlockdevAction action; | |
687 | BlockdevActionList list; | |
688 | ||
689 | action.kind = kind; | |
690 | action.data = data; | |
691 | list.value = &action; | |
692 | list.next = NULL; | |
693 | qmp_transaction(&list, errp); | |
694 | } | |
695 | ||
6106e249 LC |
696 | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
697 | bool has_format, const char *format, | |
6cc2a415 | 698 | bool has_mode, enum NewImageMode mode, |
6106e249 | 699 | Error **errp) |
f8882568 | 700 | { |
6cc2a415 PB |
701 | BlockdevSnapshot snapshot = { |
702 | .device = (char *) device, | |
703 | .snapshot_file = (char *) snapshot_file, | |
704 | .has_format = has_format, | |
705 | .format = (char *) format, | |
706 | .has_mode = has_mode, | |
707 | .mode = mode, | |
708 | }; | |
709 | blockdev_do_action(BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, &snapshot, | |
710 | errp); | |
f8882568 JS |
711 | } |
712 | ||
8802d1fd JC |
713 | |
714 | /* New and old BlockDriverState structs for group snapshots */ | |
52e7c241 | 715 | typedef struct BlkTransactionStates { |
8802d1fd JC |
716 | BlockDriverState *old_bs; |
717 | BlockDriverState *new_bs; | |
52e7c241 PB |
718 | QSIMPLEQ_ENTRY(BlkTransactionStates) entry; |
719 | } BlkTransactionStates; | |
8802d1fd JC |
720 | |
721 | /* | |
722 | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail | |
723 | * then we do not pivot any of the devices in the group, and abandon the | |
724 | * snapshots | |
725 | */ | |
52e7c241 | 726 | void qmp_transaction(BlockdevActionList *dev_list, Error **errp) |
8802d1fd JC |
727 | { |
728 | int ret = 0; | |
52e7c241 PB |
729 | BlockdevActionList *dev_entry = dev_list; |
730 | BlkTransactionStates *states, *next; | |
43e17041 | 731 | Error *local_err = NULL; |
8802d1fd | 732 | |
52e7c241 | 733 | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionStates) snap_bdrv_states; |
8802d1fd JC |
734 | QSIMPLEQ_INIT(&snap_bdrv_states); |
735 | ||
736 | /* drain all i/o before any snapshots */ | |
737 | bdrv_drain_all(); | |
738 | ||
739 | /* We don't do anything in this loop that commits us to the snapshot */ | |
740 | while (NULL != dev_entry) { | |
52e7c241 PB |
741 | BlockdevAction *dev_info = NULL; |
742 | BlockDriver *proto_drv; | |
743 | BlockDriver *drv; | |
744 | int flags; | |
bc8b094f PB |
745 | enum NewImageMode mode; |
746 | const char *new_image_file; | |
52e7c241 PB |
747 | const char *device; |
748 | const char *format = "qcow2"; | |
52e7c241 | 749 | |
8802d1fd JC |
750 | dev_info = dev_entry->value; |
751 | dev_entry = dev_entry->next; | |
752 | ||
52e7c241 | 753 | states = g_malloc0(sizeof(BlkTransactionStates)); |
8802d1fd JC |
754 | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, states, entry); |
755 | ||
52e7c241 PB |
756 | switch (dev_info->kind) { |
757 | case BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC: | |
758 | device = dev_info->blockdev_snapshot_sync->device; | |
bc8b094f PB |
759 | if (!dev_info->blockdev_snapshot_sync->has_mode) { |
760 | dev_info->blockdev_snapshot_sync->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
761 | } | |
762 | new_image_file = dev_info->blockdev_snapshot_sync->snapshot_file; | |
52e7c241 PB |
763 | if (dev_info->blockdev_snapshot_sync->has_format) { |
764 | format = dev_info->blockdev_snapshot_sync->format; | |
765 | } | |
bc8b094f | 766 | mode = dev_info->blockdev_snapshot_sync->mode; |
52e7c241 PB |
767 | break; |
768 | default: | |
769 | abort(); | |
770 | } | |
8802d1fd | 771 | |
52e7c241 PB |
772 | drv = bdrv_find_format(format); |
773 | if (!drv) { | |
774 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
775 | goto delete_and_fail; | |
776 | } | |
777 | ||
778 | states->old_bs = bdrv_find(device); | |
8802d1fd | 779 | if (!states->old_bs) { |
52e7c241 | 780 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
8802d1fd JC |
781 | goto delete_and_fail; |
782 | } | |
783 | ||
e86fe18a PB |
784 | if (!bdrv_is_inserted(states->old_bs)) { |
785 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
786 | goto delete_and_fail; | |
787 | } | |
788 | ||
8802d1fd | 789 | if (bdrv_in_use(states->old_bs)) { |
52e7c241 | 790 | error_set(errp, QERR_DEVICE_IN_USE, device); |
8802d1fd JC |
791 | goto delete_and_fail; |
792 | } | |
793 | ||
e86fe18a | 794 | if (!bdrv_is_read_only(states->old_bs)) { |
8802d1fd JC |
795 | if (bdrv_flush(states->old_bs)) { |
796 | error_set(errp, QERR_IO_ERROR); | |
797 | goto delete_and_fail; | |
798 | } | |
799 | } | |
800 | ||
8802d1fd JC |
801 | flags = states->old_bs->open_flags; |
802 | ||
52e7c241 | 803 | proto_drv = bdrv_find_protocol(new_image_file); |
8802d1fd JC |
804 | if (!proto_drv) { |
805 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
806 | goto delete_and_fail; | |
807 | } | |
808 | ||
809 | /* create new image w/backing file */ | |
bc8b094f | 810 | if (mode != NEW_IMAGE_MODE_EXISTING) { |
43e17041 LC |
811 | bdrv_img_create(new_image_file, format, |
812 | states->old_bs->filename, | |
813 | states->old_bs->drv->format_name, | |
f382d43a | 814 | NULL, -1, flags, &local_err, false); |
43e17041 LC |
815 | if (error_is_set(&local_err)) { |
816 | error_propagate(errp, local_err); | |
bc8b094f PB |
817 | goto delete_and_fail; |
818 | } | |
8802d1fd JC |
819 | } |
820 | ||
821 | /* We will manually add the backing_hd field to the bs later */ | |
822 | states->new_bs = bdrv_new(""); | |
de9c0cec KW |
823 | /* TODO Inherit bs->options or only take explicit options with an |
824 | * extended QMP command? */ | |
825 | ret = bdrv_open(states->new_bs, new_image_file, NULL, | |
8802d1fd JC |
826 | flags | BDRV_O_NO_BACKING, drv); |
827 | if (ret != 0) { | |
52e7c241 | 828 | error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file); |
8802d1fd JC |
829 | goto delete_and_fail; |
830 | } | |
831 | } | |
832 | ||
833 | ||
834 | /* Now we are going to do the actual pivot. Everything up to this point | |
835 | * is reversible, but we are committed at this point */ | |
836 | QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) { | |
837 | /* This removes our old bs from the bdrv_states, and adds the new bs */ | |
838 | bdrv_append(states->new_bs, states->old_bs); | |
870f5681 JC |
839 | /* We don't need (or want) to use the transactional |
840 | * bdrv_reopen_multiple() across all the entries at once, because we | |
841 | * don't want to abort all of them if one of them fails the reopen */ | |
842 | bdrv_reopen(states->new_bs, states->new_bs->open_flags & ~BDRV_O_RDWR, | |
843 | NULL); | |
8802d1fd JC |
844 | } |
845 | ||
846 | /* success */ | |
847 | goto exit; | |
848 | ||
849 | delete_and_fail: | |
850 | /* | |
851 | * failure, and it is all-or-none; abandon each new bs, and keep using | |
852 | * the original bs for all images | |
853 | */ | |
854 | QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) { | |
855 | if (states->new_bs) { | |
856 | bdrv_delete(states->new_bs); | |
857 | } | |
858 | } | |
859 | exit: | |
622d2419 | 860 | QSIMPLEQ_FOREACH_SAFE(states, &snap_bdrv_states, entry, next) { |
8802d1fd JC |
861 | g_free(states); |
862 | } | |
8802d1fd JC |
863 | } |
864 | ||
865 | ||
92d48558 | 866 | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
666daa68 | 867 | { |
2d3735d3 SH |
868 | if (bdrv_in_use(bs)) { |
869 | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); | |
870 | return; | |
871 | } | |
2c6942fa | 872 | if (!bdrv_dev_has_removable_media(bs)) { |
92d48558 LC |
873 | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
874 | return; | |
ea8f942f | 875 | } |
92d48558 | 876 | |
025ccaa7 PB |
877 | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) { |
878 | bdrv_dev_eject_request(bs, force); | |
879 | if (!force) { | |
92d48558 LC |
880 | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
881 | return; | |
025ccaa7 | 882 | } |
666daa68 | 883 | } |
92d48558 | 884 | |
3b5276b5 | 885 | bdrv_close(bs); |
666daa68 MA |
886 | } |
887 | ||
c245b6a3 | 888 | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
666daa68 MA |
889 | { |
890 | BlockDriverState *bs; | |
666daa68 | 891 | |
c245b6a3 | 892 | bs = bdrv_find(device); |
666daa68 | 893 | if (!bs) { |
c245b6a3 LC |
894 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
895 | return; | |
92d48558 LC |
896 | } |
897 | ||
c245b6a3 | 898 | eject_device(bs, force, errp); |
666daa68 MA |
899 | } |
900 | ||
a4dea8a9 | 901 | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
666daa68 MA |
902 | { |
903 | BlockDriverState *bs; | |
904 | int err; | |
905 | ||
a4dea8a9 | 906 | bs = bdrv_find(device); |
666daa68 | 907 | if (!bs) { |
a4dea8a9 LC |
908 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
909 | return; | |
666daa68 MA |
910 | } |
911 | ||
a4dea8a9 | 912 | err = bdrv_set_key(bs, password); |
666daa68 | 913 | if (err == -EINVAL) { |
a4dea8a9 LC |
914 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
915 | return; | |
666daa68 | 916 | } else if (err < 0) { |
a4dea8a9 LC |
917 | error_set(errp, QERR_INVALID_PASSWORD); |
918 | return; | |
666daa68 | 919 | } |
666daa68 MA |
920 | } |
921 | ||
333a96ec LC |
922 | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
923 | int bdrv_flags, BlockDriver *drv, | |
924 | const char *password, Error **errp) | |
925 | { | |
de9c0cec | 926 | if (bdrv_open(bs, filename, NULL, bdrv_flags, drv) < 0) { |
333a96ec LC |
927 | error_set(errp, QERR_OPEN_FILE_FAILED, filename); |
928 | return; | |
929 | } | |
930 | ||
931 | if (bdrv_key_required(bs)) { | |
932 | if (password) { | |
933 | if (bdrv_set_key(bs, password) < 0) { | |
934 | error_set(errp, QERR_INVALID_PASSWORD); | |
935 | } | |
936 | } else { | |
937 | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), | |
938 | bdrv_get_encrypted_filename(bs)); | |
939 | } | |
940 | } else if (password) { | |
941 | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); | |
942 | } | |
943 | } | |
944 | ||
945 | void qmp_change_blockdev(const char *device, const char *filename, | |
946 | bool has_format, const char *format, Error **errp) | |
666daa68 MA |
947 | { |
948 | BlockDriverState *bs; | |
949 | BlockDriver *drv = NULL; | |
950 | int bdrv_flags; | |
92d48558 | 951 | Error *err = NULL; |
666daa68 MA |
952 | |
953 | bs = bdrv_find(device); | |
954 | if (!bs) { | |
333a96ec LC |
955 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
956 | return; | |
666daa68 | 957 | } |
333a96ec LC |
958 | |
959 | if (format) { | |
960 | drv = bdrv_find_whitelisted_format(format); | |
666daa68 | 961 | if (!drv) { |
333a96ec LC |
962 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
963 | return; | |
666daa68 MA |
964 | } |
965 | } | |
333a96ec | 966 | |
92d48558 LC |
967 | eject_device(bs, 0, &err); |
968 | if (error_is_set(&err)) { | |
333a96ec LC |
969 | error_propagate(errp, err); |
970 | return; | |
666daa68 | 971 | } |
333a96ec | 972 | |
528f7663 | 973 | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR; |
199630b6 | 974 | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0; |
333a96ec LC |
975 | |
976 | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp); | |
666daa68 | 977 | } |
9063f814 | 978 | |
727f005e | 979 | /* throttling disk I/O limits */ |
80047da5 LC |
980 | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
981 | int64_t bps_wr, int64_t iops, int64_t iops_rd, | |
982 | int64_t iops_wr, Error **errp) | |
727f005e ZYW |
983 | { |
984 | BlockIOLimit io_limits; | |
727f005e ZYW |
985 | BlockDriverState *bs; |
986 | ||
80047da5 | 987 | bs = bdrv_find(device); |
727f005e | 988 | if (!bs) { |
80047da5 LC |
989 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
990 | return; | |
727f005e ZYW |
991 | } |
992 | ||
80047da5 LC |
993 | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = bps; |
994 | io_limits.bps[BLOCK_IO_LIMIT_READ] = bps_rd; | |
995 | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = bps_wr; | |
996 | io_limits.iops[BLOCK_IO_LIMIT_TOTAL]= iops; | |
997 | io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd; | |
998 | io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr; | |
727f005e | 999 | |
c546194f | 1000 | if (!do_check_io_limits(&io_limits, errp)) { |
80047da5 | 1001 | return; |
727f005e ZYW |
1002 | } |
1003 | ||
1004 | bs->io_limits = io_limits; | |
1005 | bs->slice_time = BLOCK_IO_SLICE_TIME; | |
1006 | ||
1007 | if (!bs->io_limits_enabled && bdrv_io_limits_enabled(bs)) { | |
1008 | bdrv_io_limits_enable(bs); | |
1009 | } else if (bs->io_limits_enabled && !bdrv_io_limits_enabled(bs)) { | |
1010 | bdrv_io_limits_disable(bs); | |
1011 | } else { | |
1012 | if (bs->block_timer) { | |
1013 | qemu_mod_timer(bs->block_timer, qemu_get_clock_ns(vm_clock)); | |
1014 | } | |
1015 | } | |
727f005e ZYW |
1016 | } |
1017 | ||
9063f814 RH |
1018 | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
1019 | { | |
1020 | const char *id = qdict_get_str(qdict, "id"); | |
1021 | BlockDriverState *bs; | |
9063f814 RH |
1022 | |
1023 | bs = bdrv_find(id); | |
1024 | if (!bs) { | |
1025 | qerror_report(QERR_DEVICE_NOT_FOUND, id); | |
1026 | return -1; | |
1027 | } | |
8591675f MT |
1028 | if (bdrv_in_use(bs)) { |
1029 | qerror_report(QERR_DEVICE_IN_USE, id); | |
1030 | return -1; | |
1031 | } | |
9063f814 RH |
1032 | |
1033 | /* quiesce block driver; prevent further io */ | |
922453bc | 1034 | bdrv_drain_all(); |
9063f814 RH |
1035 | bdrv_flush(bs); |
1036 | bdrv_close(bs); | |
1037 | ||
fa879d62 | 1038 | /* if we have a device attached to this BlockDriverState |
d22b2f41 RH |
1039 | * then we need to make the drive anonymous until the device |
1040 | * can be removed. If this is a drive with no device backing | |
1041 | * then we can just get rid of the block driver state right here. | |
1042 | */ | |
fa879d62 | 1043 | if (bdrv_get_attached_dev(bs)) { |
d22b2f41 RH |
1044 | bdrv_make_anon(bs); |
1045 | } else { | |
1046 | drive_uninit(drive_get_by_blockdev(bs)); | |
9063f814 RH |
1047 | } |
1048 | ||
9063f814 RH |
1049 | return 0; |
1050 | } | |
6d4a2b3a | 1051 | |
5e7caacb | 1052 | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
6d4a2b3a | 1053 | { |
6d4a2b3a CH |
1054 | BlockDriverState *bs; |
1055 | ||
1056 | bs = bdrv_find(device); | |
1057 | if (!bs) { | |
5e7caacb LC |
1058 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1059 | return; | |
6d4a2b3a CH |
1060 | } |
1061 | ||
1062 | if (size < 0) { | |
939a1cc3 | 1063 | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
5e7caacb | 1064 | return; |
6d4a2b3a CH |
1065 | } |
1066 | ||
939a1cc3 SH |
1067 | switch (bdrv_truncate(bs, size)) { |
1068 | case 0: | |
1069 | break; | |
1070 | case -ENOMEDIUM: | |
1071 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1072 | break; | |
1073 | case -ENOTSUP: | |
1074 | error_set(errp, QERR_UNSUPPORTED); | |
1075 | break; | |
1076 | case -EACCES: | |
1077 | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); | |
1078 | break; | |
1079 | case -EBUSY: | |
1080 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1081 | break; | |
1082 | default: | |
5e7caacb | 1083 | error_set(errp, QERR_UNDEFINED_ERROR); |
939a1cc3 | 1084 | break; |
6d4a2b3a | 1085 | } |
6d4a2b3a | 1086 | } |
12bd451f | 1087 | |
9abf2dba | 1088 | static void block_job_cb(void *opaque, int ret) |
12bd451f SH |
1089 | { |
1090 | BlockDriverState *bs = opaque; | |
1091 | QObject *obj; | |
1092 | ||
9abf2dba | 1093 | trace_block_job_cb(bs, bs->job, ret); |
12bd451f SH |
1094 | |
1095 | assert(bs->job); | |
1096 | obj = qobject_from_block_job(bs->job); | |
1097 | if (ret < 0) { | |
1098 | QDict *dict = qobject_to_qdict(obj); | |
1099 | qdict_put(dict, "error", qstring_from_str(strerror(-ret))); | |
1100 | } | |
1101 | ||
370521a1 SH |
1102 | if (block_job_is_cancelled(bs->job)) { |
1103 | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); | |
1104 | } else { | |
1105 | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); | |
1106 | } | |
12bd451f | 1107 | qobject_decref(obj); |
aa398a5c SH |
1108 | |
1109 | drive_put_ref_bh_schedule(drive_get_by_blockdev(bs)); | |
12bd451f SH |
1110 | } |
1111 | ||
1112 | void qmp_block_stream(const char *device, bool has_base, | |
1d809098 PB |
1113 | const char *base, bool has_speed, int64_t speed, |
1114 | bool has_on_error, BlockdevOnError on_error, | |
1115 | Error **errp) | |
12bd451f SH |
1116 | { |
1117 | BlockDriverState *bs; | |
c8c3080f | 1118 | BlockDriverState *base_bs = NULL; |
fd7f8c65 | 1119 | Error *local_err = NULL; |
12bd451f | 1120 | |
1d809098 PB |
1121 | if (!has_on_error) { |
1122 | on_error = BLOCKDEV_ON_ERROR_REPORT; | |
1123 | } | |
1124 | ||
12bd451f SH |
1125 | bs = bdrv_find(device); |
1126 | if (!bs) { | |
1127 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1128 | return; | |
1129 | } | |
1130 | ||
12bd451f | 1131 | if (base) { |
c8c3080f MT |
1132 | base_bs = bdrv_find_backing_image(bs, base); |
1133 | if (base_bs == NULL) { | |
1134 | error_set(errp, QERR_BASE_NOT_FOUND, base); | |
1135 | return; | |
1136 | } | |
12bd451f SH |
1137 | } |
1138 | ||
c83c66c3 | 1139 | stream_start(bs, base_bs, base, has_speed ? speed : 0, |
1d809098 | 1140 | on_error, block_job_cb, bs, &local_err); |
fd7f8c65 SH |
1141 | if (error_is_set(&local_err)) { |
1142 | error_propagate(errp, local_err); | |
1143 | return; | |
12bd451f SH |
1144 | } |
1145 | ||
aa398a5c SH |
1146 | /* Grab a reference so hotplug does not delete the BlockDriverState from |
1147 | * underneath us. | |
1148 | */ | |
1149 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1150 | ||
12bd451f SH |
1151 | trace_qmp_block_stream(bs, bs->job); |
1152 | } | |
2d47c6e9 | 1153 | |
ed61fc10 JC |
1154 | void qmp_block_commit(const char *device, |
1155 | bool has_base, const char *base, const char *top, | |
1156 | bool has_speed, int64_t speed, | |
1157 | Error **errp) | |
1158 | { | |
1159 | BlockDriverState *bs; | |
1160 | BlockDriverState *base_bs, *top_bs; | |
1161 | Error *local_err = NULL; | |
1162 | /* This will be part of the QMP command, if/when the | |
1163 | * BlockdevOnError change for blkmirror makes it in | |
1164 | */ | |
92aa5c6d | 1165 | BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT; |
ed61fc10 JC |
1166 | |
1167 | /* drain all i/o before commits */ | |
1168 | bdrv_drain_all(); | |
1169 | ||
1170 | bs = bdrv_find(device); | |
1171 | if (!bs) { | |
1172 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1173 | return; | |
1174 | } | |
ed61fc10 JC |
1175 | |
1176 | /* default top_bs is the active layer */ | |
1177 | top_bs = bs; | |
1178 | ||
1179 | if (top) { | |
1180 | if (strcmp(bs->filename, top) != 0) { | |
1181 | top_bs = bdrv_find_backing_image(bs, top); | |
1182 | } | |
1183 | } | |
1184 | ||
1185 | if (top_bs == NULL) { | |
1186 | error_setg(errp, "Top image file %s not found", top ? top : "NULL"); | |
1187 | return; | |
1188 | } | |
1189 | ||
d5208c45 JC |
1190 | if (has_base && base) { |
1191 | base_bs = bdrv_find_backing_image(top_bs, base); | |
1192 | } else { | |
1193 | base_bs = bdrv_find_base(top_bs); | |
1194 | } | |
1195 | ||
1196 | if (base_bs == NULL) { | |
1197 | error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL"); | |
1198 | return; | |
1199 | } | |
1200 | ||
ed61fc10 JC |
1201 | commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs, |
1202 | &local_err); | |
1203 | if (local_err != NULL) { | |
1204 | error_propagate(errp, local_err); | |
1205 | return; | |
1206 | } | |
1207 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1208 | * underneath us. | |
1209 | */ | |
1210 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1211 | } | |
1212 | ||
08e4ed6c PB |
1213 | #define DEFAULT_MIRROR_BUF_SIZE (10 << 20) |
1214 | ||
d9b902db PB |
1215 | void qmp_drive_mirror(const char *device, const char *target, |
1216 | bool has_format, const char *format, | |
1217 | enum MirrorSyncMode sync, | |
1218 | bool has_mode, enum NewImageMode mode, | |
b952b558 | 1219 | bool has_speed, int64_t speed, |
eee13dfe | 1220 | bool has_granularity, uint32_t granularity, |
08e4ed6c | 1221 | bool has_buf_size, int64_t buf_size, |
b952b558 PB |
1222 | bool has_on_source_error, BlockdevOnError on_source_error, |
1223 | bool has_on_target_error, BlockdevOnError on_target_error, | |
1224 | Error **errp) | |
d9b902db | 1225 | { |
d9b902db PB |
1226 | BlockDriverState *bs; |
1227 | BlockDriverState *source, *target_bs; | |
1228 | BlockDriver *proto_drv; | |
1229 | BlockDriver *drv = NULL; | |
1230 | Error *local_err = NULL; | |
1231 | int flags; | |
1232 | uint64_t size; | |
1233 | int ret; | |
1234 | ||
1235 | if (!has_speed) { | |
1236 | speed = 0; | |
1237 | } | |
b952b558 PB |
1238 | if (!has_on_source_error) { |
1239 | on_source_error = BLOCKDEV_ON_ERROR_REPORT; | |
1240 | } | |
1241 | if (!has_on_target_error) { | |
1242 | on_target_error = BLOCKDEV_ON_ERROR_REPORT; | |
1243 | } | |
d9b902db PB |
1244 | if (!has_mode) { |
1245 | mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; | |
1246 | } | |
eee13dfe PB |
1247 | if (!has_granularity) { |
1248 | granularity = 0; | |
1249 | } | |
08e4ed6c PB |
1250 | if (!has_buf_size) { |
1251 | buf_size = DEFAULT_MIRROR_BUF_SIZE; | |
1252 | } | |
1253 | ||
eee13dfe PB |
1254 | if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) { |
1255 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1256 | return; | |
1257 | } | |
1258 | if (granularity & (granularity - 1)) { | |
1259 | error_set(errp, QERR_INVALID_PARAMETER, device); | |
1260 | return; | |
1261 | } | |
d9b902db PB |
1262 | |
1263 | bs = bdrv_find(device); | |
1264 | if (!bs) { | |
1265 | error_set(errp, QERR_DEVICE_NOT_FOUND, device); | |
1266 | return; | |
1267 | } | |
1268 | ||
1269 | if (!bdrv_is_inserted(bs)) { | |
1270 | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); | |
1271 | return; | |
1272 | } | |
1273 | ||
1274 | if (!has_format) { | |
1275 | format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name; | |
1276 | } | |
1277 | if (format) { | |
1278 | drv = bdrv_find_format(format); | |
1279 | if (!drv) { | |
1280 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1281 | return; | |
1282 | } | |
1283 | } | |
1284 | ||
1285 | if (bdrv_in_use(bs)) { | |
1286 | error_set(errp, QERR_DEVICE_IN_USE, device); | |
1287 | return; | |
1288 | } | |
1289 | ||
1290 | flags = bs->open_flags | BDRV_O_RDWR; | |
1291 | source = bs->backing_hd; | |
1292 | if (!source && sync == MIRROR_SYNC_MODE_TOP) { | |
1293 | sync = MIRROR_SYNC_MODE_FULL; | |
1294 | } | |
1295 | ||
1296 | proto_drv = bdrv_find_protocol(target); | |
1297 | if (!proto_drv) { | |
1298 | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); | |
1299 | return; | |
1300 | } | |
1301 | ||
86899072 VI |
1302 | bdrv_get_geometry(bs, &size); |
1303 | size *= 512; | |
d9b902db PB |
1304 | if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) { |
1305 | /* create new image w/o backing file */ | |
1306 | assert(format && drv); | |
cf8f2426 | 1307 | bdrv_img_create(target, format, |
f382d43a | 1308 | NULL, NULL, NULL, size, flags, &local_err, false); |
d9b902db PB |
1309 | } else { |
1310 | switch (mode) { | |
1311 | case NEW_IMAGE_MODE_EXISTING: | |
1312 | ret = 0; | |
1313 | break; | |
1314 | case NEW_IMAGE_MODE_ABSOLUTE_PATHS: | |
1315 | /* create new image with backing file */ | |
cf8f2426 LC |
1316 | bdrv_img_create(target, format, |
1317 | source->filename, | |
1318 | source->drv->format_name, | |
f382d43a | 1319 | NULL, size, flags, &local_err, false); |
d9b902db PB |
1320 | break; |
1321 | default: | |
1322 | abort(); | |
1323 | } | |
1324 | } | |
1325 | ||
cf8f2426 LC |
1326 | if (error_is_set(&local_err)) { |
1327 | error_propagate(errp, local_err); | |
d9b902db PB |
1328 | return; |
1329 | } | |
1330 | ||
b812f671 PB |
1331 | /* Mirroring takes care of copy-on-write using the source's backing |
1332 | * file. | |
1333 | */ | |
d9b902db | 1334 | target_bs = bdrv_new(""); |
de9c0cec | 1335 | ret = bdrv_open(target_bs, target, NULL, flags | BDRV_O_NO_BACKING, drv); |
d9b902db PB |
1336 | |
1337 | if (ret < 0) { | |
1338 | bdrv_delete(target_bs); | |
1339 | error_set(errp, QERR_OPEN_FILE_FAILED, target); | |
1340 | return; | |
1341 | } | |
1342 | ||
08e4ed6c | 1343 | mirror_start(bs, target_bs, speed, granularity, buf_size, sync, |
eee13dfe | 1344 | on_source_error, on_target_error, |
b952b558 | 1345 | block_job_cb, bs, &local_err); |
d9b902db PB |
1346 | if (local_err != NULL) { |
1347 | bdrv_delete(target_bs); | |
1348 | error_propagate(errp, local_err); | |
1349 | return; | |
1350 | } | |
1351 | ||
1352 | /* Grab a reference so hotplug does not delete the BlockDriverState from | |
1353 | * underneath us. | |
1354 | */ | |
1355 | drive_get_ref(drive_get_by_blockdev(bs)); | |
1356 | } | |
1357 | ||
2d47c6e9 SH |
1358 | static BlockJob *find_block_job(const char *device) |
1359 | { | |
1360 | BlockDriverState *bs; | |
1361 | ||
1362 | bs = bdrv_find(device); | |
1363 | if (!bs || !bs->job) { | |
1364 | return NULL; | |
1365 | } | |
1366 | return bs->job; | |
1367 | } | |
1368 | ||
882ec7ce | 1369 | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
2d47c6e9 SH |
1370 | { |
1371 | BlockJob *job = find_block_job(device); | |
1372 | ||
1373 | if (!job) { | |
7ef15070 | 1374 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
2d47c6e9 SH |
1375 | return; |
1376 | } | |
1377 | ||
882ec7ce | 1378 | block_job_set_speed(job, speed, errp); |
2d47c6e9 | 1379 | } |
370521a1 | 1380 | |
6e37fb81 PB |
1381 | void qmp_block_job_cancel(const char *device, |
1382 | bool has_force, bool force, Error **errp) | |
370521a1 SH |
1383 | { |
1384 | BlockJob *job = find_block_job(device); | |
1385 | ||
6e37fb81 PB |
1386 | if (!has_force) { |
1387 | force = false; | |
1388 | } | |
1389 | ||
370521a1 | 1390 | if (!job) { |
7ef15070 | 1391 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); |
370521a1 SH |
1392 | return; |
1393 | } | |
6e37fb81 | 1394 | if (job->paused && !force) { |
8acc72a4 PB |
1395 | error_set(errp, QERR_BLOCK_JOB_PAUSED, device); |
1396 | return; | |
1397 | } | |
370521a1 SH |
1398 | |
1399 | trace_qmp_block_job_cancel(job); | |
1400 | block_job_cancel(job); | |
1401 | } | |
fb5458cd | 1402 | |
6e37fb81 PB |
1403 | void qmp_block_job_pause(const char *device, Error **errp) |
1404 | { | |
1405 | BlockJob *job = find_block_job(device); | |
1406 | ||
1407 | if (!job) { | |
1408 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1409 | return; | |
1410 | } | |
1411 | ||
1412 | trace_qmp_block_job_pause(job); | |
1413 | block_job_pause(job); | |
1414 | } | |
1415 | ||
1416 | void qmp_block_job_resume(const char *device, Error **errp) | |
1417 | { | |
1418 | BlockJob *job = find_block_job(device); | |
1419 | ||
1420 | if (!job) { | |
1421 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1422 | return; | |
1423 | } | |
1424 | ||
1425 | trace_qmp_block_job_resume(job); | |
1426 | block_job_resume(job); | |
1427 | } | |
1428 | ||
aeae883b PB |
1429 | void qmp_block_job_complete(const char *device, Error **errp) |
1430 | { | |
1431 | BlockJob *job = find_block_job(device); | |
1432 | ||
1433 | if (!job) { | |
1434 | error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device); | |
1435 | return; | |
1436 | } | |
1437 | ||
1438 | trace_qmp_block_job_complete(job); | |
1439 | block_job_complete(job, errp); | |
1440 | } | |
1441 | ||
fb5458cd SH |
1442 | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
1443 | { | |
1444 | BlockJobInfoList **prev = opaque; | |
1445 | BlockJob *job = bs->job; | |
1446 | ||
1447 | if (job) { | |
30e628b7 PB |
1448 | BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1); |
1449 | elem->value = block_job_query(bs->job); | |
fb5458cd SH |
1450 | (*prev)->next = elem; |
1451 | *prev = elem; | |
1452 | } | |
1453 | } | |
1454 | ||
1455 | BlockJobInfoList *qmp_query_block_jobs(Error **errp) | |
1456 | { | |
1457 | /* Dummy is a fake list element for holding the head pointer */ | |
1458 | BlockJobInfoList dummy = {}; | |
1459 | BlockJobInfoList *prev = &dummy; | |
1460 | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); | |
1461 | return dummy.next; | |
1462 | } | |
4d454574 PB |
1463 | |
1464 | QemuOptsList qemu_drive_opts = { | |
1465 | .name = "drive", | |
1466 | .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head), | |
1467 | .desc = { | |
1468 | { | |
1469 | .name = "bus", | |
1470 | .type = QEMU_OPT_NUMBER, | |
1471 | .help = "bus number", | |
1472 | },{ | |
1473 | .name = "unit", | |
1474 | .type = QEMU_OPT_NUMBER, | |
1475 | .help = "unit number (i.e. lun for scsi)", | |
1476 | },{ | |
1477 | .name = "if", | |
1478 | .type = QEMU_OPT_STRING, | |
1479 | .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)", | |
1480 | },{ | |
1481 | .name = "index", | |
1482 | .type = QEMU_OPT_NUMBER, | |
1483 | .help = "index number", | |
1484 | },{ | |
1485 | .name = "cyls", | |
1486 | .type = QEMU_OPT_NUMBER, | |
1487 | .help = "number of cylinders (ide disk geometry)", | |
1488 | },{ | |
1489 | .name = "heads", | |
1490 | .type = QEMU_OPT_NUMBER, | |
1491 | .help = "number of heads (ide disk geometry)", | |
1492 | },{ | |
1493 | .name = "secs", | |
1494 | .type = QEMU_OPT_NUMBER, | |
1495 | .help = "number of sectors (ide disk geometry)", | |
1496 | },{ | |
1497 | .name = "trans", | |
1498 | .type = QEMU_OPT_STRING, | |
1499 | .help = "chs translation (auto, lba. none)", | |
1500 | },{ | |
1501 | .name = "media", | |
1502 | .type = QEMU_OPT_STRING, | |
1503 | .help = "media type (disk, cdrom)", | |
1504 | },{ | |
1505 | .name = "snapshot", | |
1506 | .type = QEMU_OPT_BOOL, | |
1507 | .help = "enable/disable snapshot mode", | |
1508 | },{ | |
1509 | .name = "file", | |
1510 | .type = QEMU_OPT_STRING, | |
1511 | .help = "disk image", | |
a9384aff PB |
1512 | },{ |
1513 | .name = "discard", | |
1514 | .type = QEMU_OPT_STRING, | |
1515 | .help = "discard operation (ignore/off, unmap/on)", | |
4d454574 PB |
1516 | },{ |
1517 | .name = "cache", | |
1518 | .type = QEMU_OPT_STRING, | |
1519 | .help = "host cache usage (none, writeback, writethrough, " | |
1520 | "directsync, unsafe)", | |
1521 | },{ | |
1522 | .name = "aio", | |
1523 | .type = QEMU_OPT_STRING, | |
1524 | .help = "host AIO implementation (threads, native)", | |
1525 | },{ | |
1526 | .name = "format", | |
1527 | .type = QEMU_OPT_STRING, | |
1528 | .help = "disk format (raw, qcow2, ...)", | |
1529 | },{ | |
1530 | .name = "serial", | |
1531 | .type = QEMU_OPT_STRING, | |
1532 | .help = "disk serial number", | |
1533 | },{ | |
1534 | .name = "rerror", | |
1535 | .type = QEMU_OPT_STRING, | |
1536 | .help = "read error action", | |
1537 | },{ | |
1538 | .name = "werror", | |
1539 | .type = QEMU_OPT_STRING, | |
1540 | .help = "write error action", | |
1541 | },{ | |
1542 | .name = "addr", | |
1543 | .type = QEMU_OPT_STRING, | |
1544 | .help = "pci address (virtio only)", | |
1545 | },{ | |
1546 | .name = "readonly", | |
1547 | .type = QEMU_OPT_BOOL, | |
1548 | .help = "open drive file as read-only", | |
1549 | },{ | |
1550 | .name = "iops", | |
1551 | .type = QEMU_OPT_NUMBER, | |
1552 | .help = "limit total I/O operations per second", | |
1553 | },{ | |
1554 | .name = "iops_rd", | |
1555 | .type = QEMU_OPT_NUMBER, | |
1556 | .help = "limit read operations per second", | |
1557 | },{ | |
1558 | .name = "iops_wr", | |
1559 | .type = QEMU_OPT_NUMBER, | |
1560 | .help = "limit write operations per second", | |
1561 | },{ | |
1562 | .name = "bps", | |
1563 | .type = QEMU_OPT_NUMBER, | |
1564 | .help = "limit total bytes per second", | |
1565 | },{ | |
1566 | .name = "bps_rd", | |
1567 | .type = QEMU_OPT_NUMBER, | |
1568 | .help = "limit read bytes per second", | |
1569 | },{ | |
1570 | .name = "bps_wr", | |
1571 | .type = QEMU_OPT_NUMBER, | |
1572 | .help = "limit write bytes per second", | |
1573 | },{ | |
1574 | .name = "copy-on-read", | |
1575 | .type = QEMU_OPT_BOOL, | |
1576 | .help = "copy read data from backing file into image file", | |
1577 | },{ | |
1578 | .name = "boot", | |
1579 | .type = QEMU_OPT_BOOL, | |
1580 | .help = "(deprecated, ignored)", | |
1581 | }, | |
1582 | { /* end of list */ } | |
1583 | }, | |
1584 | }; |