5 #include "qemu-common.h"
6 #include "qemu/option.h"
7 #include "block/coroutine.h"
8 #include "qapi/qmp/qobject.h"
9 #include "qapi-types.h"
12 typedef struct BlockDriver BlockDriver
;
13 typedef struct BlockJob BlockJob
;
15 typedef struct BlockDriverInfo
{
16 /* in bytes, 0 if irrelevant */
18 /* offset at which the VM state can be saved (0 if not possible) */
19 int64_t vm_state_offset
;
22 * True if unallocated blocks read back as zeroes. This is equivalent
23 * to the the LBPRZ flag in the SCSI logical block provisioning page.
25 bool unallocated_blocks_are_zero
;
27 * True if the driver can optimize writing zeroes by unmapping
28 * sectors. This is equivalent to the BLKDISCARDZEROES ioctl in Linux
29 * with the difference that in qemu a discard is allowed to silently
30 * fail. Therefore we have to use bdrv_write_zeroes with the
31 * BDRV_REQ_MAY_UNMAP flag for an optimized zero write with unmapping.
32 * After this call the driver has to guarantee that the contents read
33 * back as zero. It is additionally required that the block device is
34 * opened with BDRV_O_UNMAP flag for this to work.
36 bool can_write_zeroes_with_unmap
;
38 * True if this block driver only supports compressed writes
40 bool needs_compressed_writes
;
43 typedef struct BlockFragInfo
{
44 uint64_t allocated_clusters
;
45 uint64_t total_clusters
;
46 uint64_t fragmented_clusters
;
47 uint64_t compressed_clusters
;
50 /* Callbacks for block device models */
51 typedef struct BlockDevOps
{
53 * Runs when virtual media changed (monitor commands eject, change)
54 * Argument load is true on load and false on eject.
55 * Beware: doesn't run when a host device's physical media
56 * changes. Sure would be useful if it did.
57 * Device models with removable media must implement this callback.
59 void (*change_media_cb
)(void *opaque
, bool load
);
61 * Runs when an eject request is issued from the monitor, the tray
62 * is closed, and the medium is locked.
63 * Device models that do not implement is_medium_locked will not need
64 * this callback. Device models that can lock the medium or tray might
65 * want to implement the callback and unlock the tray when "force" is
66 * true, even if they do not support eject requests.
68 void (*eject_request_cb
)(void *opaque
, bool force
);
70 * Is the virtual tray open?
71 * Device models implement this only when the device has a tray.
73 bool (*is_tray_open
)(void *opaque
);
75 * Is the virtual medium locked into the device?
76 * Device models implement this only when device has such a lock.
78 bool (*is_medium_locked
)(void *opaque
);
80 * Runs when the size changed (e.g. monitor command block_resize)
82 void (*resize_cb
)(void *opaque
);
86 BDRV_REQ_COPY_ON_READ
= 0x1,
87 BDRV_REQ_ZERO_WRITE
= 0x2,
88 /* The BDRV_REQ_MAY_UNMAP flag is used to indicate that the block driver
89 * is allowed to optimize a write zeroes request by unmapping (discarding)
90 * blocks if it is guaranteed that the result will read back as
91 * zeroes. The flag is only passed to the driver if the block device is
92 * opened with BDRV_O_UNMAP.
94 BDRV_REQ_MAY_UNMAP
= 0x4,
97 #define BDRV_O_RDWR 0x0002
98 #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */
99 #define BDRV_O_TEMPORARY 0x0010 /* delete the file after use */
100 #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */
101 #define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */
102 #define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */
103 #define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */
104 #define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */
105 #define BDRV_O_COPY_ON_READ 0x0400 /* copy read backing sectors into image */
106 #define BDRV_O_INCOMING 0x0800 /* consistency hint for incoming migration */
107 #define BDRV_O_CHECK 0x1000 /* open solely for consistency check */
108 #define BDRV_O_ALLOW_RDWR 0x2000 /* allow reopen to change from r/o to r/w */
109 #define BDRV_O_UNMAP 0x4000 /* execute guest UNMAP/TRIM operations */
110 #define BDRV_O_PROTOCOL 0x8000 /* if no block driver is explicitly given:
111 select an appropriate protocol driver,
112 ignoring the format layer */
114 #define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH)
116 #define BDRV_SECTOR_BITS 9
117 #define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS)
118 #define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1)
120 /* BDRV_BLOCK_DATA: data is read from bs->file or another file
121 * BDRV_BLOCK_ZERO: sectors read as zero
122 * BDRV_BLOCK_OFFSET_VALID: sector stored in bs->file as raw data
123 * BDRV_BLOCK_RAW: used internally to indicate that the request
124 * was answered by the raw driver and that one
125 * should look in bs->file directly.
127 * If BDRV_BLOCK_OFFSET_VALID is set, bits 9-62 represent the offset in
128 * bs->file where sector data can be read from as raw data.
130 * DATA == 0 && ZERO == 0 means that data is read from backing_hd if present.
132 * DATA ZERO OFFSET_VALID
133 * t t t sectors read as zero, bs->file is zero at offset
134 * t f t sectors read as valid from bs->file at offset
135 * f t t sectors preallocated, read as zero, bs->file not
136 * necessarily zero at offset
137 * f f t sectors preallocated but read from backing_hd,
138 * bs->file contains garbage at offset
139 * t t f sectors preallocated, read as zero, unknown offset
140 * t f f sectors read from unknown file or offset
141 * f t f not allocated or unknown offset, read as zero
142 * f f f not allocated or unknown offset, read from backing_hd
144 #define BDRV_BLOCK_DATA 1
145 #define BDRV_BLOCK_ZERO 2
146 #define BDRV_BLOCK_OFFSET_VALID 4
147 #define BDRV_BLOCK_RAW 8
148 #define BDRV_BLOCK_OFFSET_MASK BDRV_SECTOR_MASK
151 BDRV_ACTION_REPORT
, BDRV_ACTION_IGNORE
, BDRV_ACTION_STOP
154 typedef QSIMPLEQ_HEAD(BlockReopenQueue
, BlockReopenQueueEntry
) BlockReopenQueue
;
156 typedef struct BDRVReopenState
{
157 BlockDriverState
*bs
;
163 void bdrv_iostatus_enable(BlockDriverState
*bs
);
164 void bdrv_iostatus_reset(BlockDriverState
*bs
);
165 void bdrv_iostatus_disable(BlockDriverState
*bs
);
166 bool bdrv_iostatus_is_enabled(const BlockDriverState
*bs
);
167 void bdrv_iostatus_set_err(BlockDriverState
*bs
, int error
);
168 void bdrv_info_print(Monitor
*mon
, const QObject
*data
);
169 void bdrv_info(Monitor
*mon
, QObject
**ret_data
);
170 void bdrv_stats_print(Monitor
*mon
, const QObject
*data
);
171 void bdrv_info_stats(Monitor
*mon
, QObject
**ret_data
);
173 /* disk I/O throttling */
174 void bdrv_io_limits_enable(BlockDriverState
*bs
);
175 void bdrv_io_limits_disable(BlockDriverState
*bs
);
177 void bdrv_init(void);
178 void bdrv_init_with_whitelist(void);
179 BlockDriver
*bdrv_find_protocol(const char *filename
,
180 bool allow_protocol_prefix
);
181 BlockDriver
*bdrv_find_format(const char *format_name
);
182 BlockDriver
*bdrv_find_whitelisted_format(const char *format_name
,
184 int bdrv_create(BlockDriver
*drv
, const char* filename
,
185 QEMUOptionParameter
*options
, Error
**errp
);
186 int bdrv_create_file(const char* filename
, QEMUOptionParameter
*options
,
188 BlockDriverState
*bdrv_new(const char *device_name
, Error
**errp
);
189 void bdrv_make_anon(BlockDriverState
*bs
);
190 void bdrv_swap(BlockDriverState
*bs_new
, BlockDriverState
*bs_old
);
191 void bdrv_append(BlockDriverState
*bs_new
, BlockDriverState
*bs_top
);
192 int bdrv_parse_cache_flags(const char *mode
, int *flags
);
193 int bdrv_parse_discard_flags(const char *mode
, int *flags
);
194 int bdrv_open_image(BlockDriverState
**pbs
, const char *filename
,
195 QDict
*options
, const char *bdref_key
, int flags
,
196 bool allow_none
, Error
**errp
);
197 int bdrv_open_backing_file(BlockDriverState
*bs
, QDict
*options
, Error
**errp
);
198 void bdrv_append_temp_snapshot(BlockDriverState
*bs
, int flags
, Error
**errp
);
199 int bdrv_open(BlockDriverState
**pbs
, const char *filename
,
200 const char *reference
, QDict
*options
, int flags
,
201 BlockDriver
*drv
, Error
**errp
);
202 BlockReopenQueue
*bdrv_reopen_queue(BlockReopenQueue
*bs_queue
,
203 BlockDriverState
*bs
, int flags
);
204 int bdrv_reopen_multiple(BlockReopenQueue
*bs_queue
, Error
**errp
);
205 int bdrv_reopen(BlockDriverState
*bs
, int bdrv_flags
, Error
**errp
);
206 int bdrv_reopen_prepare(BDRVReopenState
*reopen_state
,
207 BlockReopenQueue
*queue
, Error
**errp
);
208 void bdrv_reopen_commit(BDRVReopenState
*reopen_state
);
209 void bdrv_reopen_abort(BDRVReopenState
*reopen_state
);
210 void bdrv_close(BlockDriverState
*bs
);
211 void bdrv_add_close_notifier(BlockDriverState
*bs
, Notifier
*notify
);
212 int bdrv_attach_dev(BlockDriverState
*bs
, void *dev
);
213 void bdrv_attach_dev_nofail(BlockDriverState
*bs
, void *dev
);
214 void bdrv_detach_dev(BlockDriverState
*bs
, void *dev
);
215 void *bdrv_get_attached_dev(BlockDriverState
*bs
);
216 void bdrv_set_dev_ops(BlockDriverState
*bs
, const BlockDevOps
*ops
,
218 void bdrv_dev_eject_request(BlockDriverState
*bs
, bool force
);
219 bool bdrv_dev_has_removable_media(BlockDriverState
*bs
);
220 bool bdrv_dev_is_tray_open(BlockDriverState
*bs
);
221 bool bdrv_dev_is_medium_locked(BlockDriverState
*bs
);
222 int bdrv_read(BlockDriverState
*bs
, int64_t sector_num
,
223 uint8_t *buf
, int nb_sectors
);
224 int bdrv_read_unthrottled(BlockDriverState
*bs
, int64_t sector_num
,
225 uint8_t *buf
, int nb_sectors
);
226 int bdrv_write(BlockDriverState
*bs
, int64_t sector_num
,
227 const uint8_t *buf
, int nb_sectors
);
228 int bdrv_write_zeroes(BlockDriverState
*bs
, int64_t sector_num
,
229 int nb_sectors
, BdrvRequestFlags flags
);
230 BlockDriverAIOCB
*bdrv_aio_write_zeroes(BlockDriverState
*bs
, int64_t sector_num
,
231 int nb_sectors
, BdrvRequestFlags flags
,
232 BlockDriverCompletionFunc
*cb
, void *opaque
);
233 int bdrv_make_zero(BlockDriverState
*bs
, BdrvRequestFlags flags
);
234 int bdrv_pread(BlockDriverState
*bs
, int64_t offset
,
235 void *buf
, int count
);
236 int bdrv_pwrite(BlockDriverState
*bs
, int64_t offset
,
237 const void *buf
, int count
);
238 int bdrv_pwritev(BlockDriverState
*bs
, int64_t offset
, QEMUIOVector
*qiov
);
239 int bdrv_pwrite_sync(BlockDriverState
*bs
, int64_t offset
,
240 const void *buf
, int count
);
241 int coroutine_fn
bdrv_co_readv(BlockDriverState
*bs
, int64_t sector_num
,
242 int nb_sectors
, QEMUIOVector
*qiov
);
243 int coroutine_fn
bdrv_co_copy_on_readv(BlockDriverState
*bs
,
244 int64_t sector_num
, int nb_sectors
, QEMUIOVector
*qiov
);
245 int coroutine_fn
bdrv_co_writev(BlockDriverState
*bs
, int64_t sector_num
,
246 int nb_sectors
, QEMUIOVector
*qiov
);
248 * Efficiently zero a region of the disk image. Note that this is a regular
249 * I/O request like read or write and should have a reasonable size. This
250 * function is not suitable for zeroing the entire image in a single request
251 * because it may allocate memory for the entire region.
253 int coroutine_fn
bdrv_co_write_zeroes(BlockDriverState
*bs
, int64_t sector_num
,
254 int nb_sectors
, BdrvRequestFlags flags
);
255 BlockDriverState
*bdrv_find_backing_image(BlockDriverState
*bs
,
256 const char *backing_file
);
257 int bdrv_get_backing_file_depth(BlockDriverState
*bs
);
258 int bdrv_truncate(BlockDriverState
*bs
, int64_t offset
);
259 int64_t bdrv_getlength(BlockDriverState
*bs
);
260 int64_t bdrv_get_allocated_file_size(BlockDriverState
*bs
);
261 void bdrv_get_geometry(BlockDriverState
*bs
, uint64_t *nb_sectors_ptr
);
262 int bdrv_refresh_limits(BlockDriverState
*bs
);
263 int bdrv_commit(BlockDriverState
*bs
);
264 int bdrv_commit_all(void);
265 int bdrv_change_backing_file(BlockDriverState
*bs
,
266 const char *backing_file
, const char *backing_fmt
);
267 void bdrv_register(BlockDriver
*bdrv
);
268 int bdrv_drop_intermediate(BlockDriverState
*active
, BlockDriverState
*top
,
269 BlockDriverState
*base
);
270 BlockDriverState
*bdrv_find_overlay(BlockDriverState
*active
,
271 BlockDriverState
*bs
);
272 BlockDriverState
*bdrv_find_base(BlockDriverState
*bs
);
275 typedef struct BdrvCheckResult
{
279 int corruptions_fixed
;
281 int64_t image_end_offset
;
290 int bdrv_check(BlockDriverState
*bs
, BdrvCheckResult
*res
, BdrvCheckMode fix
);
292 int bdrv_amend_options(BlockDriverState
*bs_new
, QEMUOptionParameter
*options
);
294 /* external snapshots */
295 bool bdrv_recurse_is_first_non_filter(BlockDriverState
*bs
,
296 BlockDriverState
*candidate
);
297 bool bdrv_is_first_non_filter(BlockDriverState
*candidate
);
299 /* async block I/O */
300 typedef void BlockDriverDirtyHandler(BlockDriverState
*bs
, int64_t sector
,
302 BlockDriverAIOCB
*bdrv_aio_readv(BlockDriverState
*bs
, int64_t sector_num
,
303 QEMUIOVector
*iov
, int nb_sectors
,
304 BlockDriverCompletionFunc
*cb
, void *opaque
);
305 BlockDriverAIOCB
*bdrv_aio_writev(BlockDriverState
*bs
, int64_t sector_num
,
306 QEMUIOVector
*iov
, int nb_sectors
,
307 BlockDriverCompletionFunc
*cb
, void *opaque
);
308 BlockDriverAIOCB
*bdrv_aio_flush(BlockDriverState
*bs
,
309 BlockDriverCompletionFunc
*cb
, void *opaque
);
310 BlockDriverAIOCB
*bdrv_aio_discard(BlockDriverState
*bs
,
311 int64_t sector_num
, int nb_sectors
,
312 BlockDriverCompletionFunc
*cb
, void *opaque
);
313 void bdrv_aio_cancel(BlockDriverAIOCB
*acb
);
315 typedef struct BlockRequest
{
316 /* Fields to be filled by multiwrite caller */
321 BlockDriverCompletionFunc
*cb
;
324 /* Filled by multiwrite implementation */
328 int bdrv_aio_multiwrite(BlockDriverState
*bs
, BlockRequest
*reqs
,
331 /* sg packet commands */
332 int bdrv_ioctl(BlockDriverState
*bs
, unsigned long int req
, void *buf
);
333 BlockDriverAIOCB
*bdrv_aio_ioctl(BlockDriverState
*bs
,
334 unsigned long int req
, void *buf
,
335 BlockDriverCompletionFunc
*cb
, void *opaque
);
337 /* Invalidate any cached metadata used by image formats */
338 void bdrv_invalidate_cache(BlockDriverState
*bs
, Error
**errp
);
339 void bdrv_invalidate_cache_all(Error
**errp
);
341 void bdrv_clear_incoming_migration_all(void);
343 /* Ensure contents are flushed to disk. */
344 int bdrv_flush(BlockDriverState
*bs
);
345 int coroutine_fn
bdrv_co_flush(BlockDriverState
*bs
);
346 int bdrv_flush_all(void);
347 void bdrv_close_all(void);
348 void bdrv_drain_all(void);
350 int bdrv_discard(BlockDriverState
*bs
, int64_t sector_num
, int nb_sectors
);
351 int bdrv_co_discard(BlockDriverState
*bs
, int64_t sector_num
, int nb_sectors
);
352 int bdrv_has_zero_init_1(BlockDriverState
*bs
);
353 int bdrv_has_zero_init(BlockDriverState
*bs
);
354 bool bdrv_unallocated_blocks_are_zero(BlockDriverState
*bs
);
355 bool bdrv_can_write_zeroes_with_unmap(BlockDriverState
*bs
);
356 int64_t bdrv_get_block_status(BlockDriverState
*bs
, int64_t sector_num
,
357 int nb_sectors
, int *pnum
);
358 int bdrv_is_allocated(BlockDriverState
*bs
, int64_t sector_num
, int nb_sectors
,
360 int bdrv_is_allocated_above(BlockDriverState
*top
, BlockDriverState
*base
,
361 int64_t sector_num
, int nb_sectors
, int *pnum
);
363 void bdrv_set_on_error(BlockDriverState
*bs
, BlockdevOnError on_read_error
,
364 BlockdevOnError on_write_error
);
365 BlockdevOnError
bdrv_get_on_error(BlockDriverState
*bs
, bool is_read
);
366 BlockErrorAction
bdrv_get_error_action(BlockDriverState
*bs
, bool is_read
, int error
);
367 void bdrv_error_action(BlockDriverState
*bs
, BlockErrorAction action
,
368 bool is_read
, int error
);
369 int bdrv_is_read_only(BlockDriverState
*bs
);
370 int bdrv_is_sg(BlockDriverState
*bs
);
371 int bdrv_enable_write_cache(BlockDriverState
*bs
);
372 void bdrv_set_enable_write_cache(BlockDriverState
*bs
, bool wce
);
373 int bdrv_is_inserted(BlockDriverState
*bs
);
374 int bdrv_media_changed(BlockDriverState
*bs
);
375 void bdrv_lock_medium(BlockDriverState
*bs
, bool locked
);
376 void bdrv_eject(BlockDriverState
*bs
, bool eject_flag
);
377 const char *bdrv_get_format_name(BlockDriverState
*bs
);
378 BlockDriverState
*bdrv_find(const char *name
);
379 BlockDriverState
*bdrv_find_node(const char *node_name
);
380 BlockDeviceInfoList
*bdrv_named_nodes_list(void);
381 BlockDriverState
*bdrv_lookup_bs(const char *device
,
382 const char *node_name
,
384 BlockDriverState
*bdrv_next(BlockDriverState
*bs
);
385 void bdrv_iterate(void (*it
)(void *opaque
, BlockDriverState
*bs
),
387 int bdrv_is_encrypted(BlockDriverState
*bs
);
388 int bdrv_key_required(BlockDriverState
*bs
);
389 int bdrv_set_key(BlockDriverState
*bs
, const char *key
);
390 int bdrv_query_missing_keys(void);
391 void bdrv_iterate_format(void (*it
)(void *opaque
, const char *name
),
393 const char *bdrv_get_device_name(BlockDriverState
*bs
);
394 int bdrv_get_flags(BlockDriverState
*bs
);
395 int bdrv_write_compressed(BlockDriverState
*bs
, int64_t sector_num
,
396 const uint8_t *buf
, int nb_sectors
);
397 int bdrv_get_info(BlockDriverState
*bs
, BlockDriverInfo
*bdi
);
398 ImageInfoSpecific
*bdrv_get_specific_info(BlockDriverState
*bs
);
399 void bdrv_round_to_clusters(BlockDriverState
*bs
,
400 int64_t sector_num
, int nb_sectors
,
401 int64_t *cluster_sector_num
,
402 int *cluster_nb_sectors
);
404 const char *bdrv_get_encrypted_filename(BlockDriverState
*bs
);
405 void bdrv_get_backing_filename(BlockDriverState
*bs
,
406 char *filename
, int filename_size
);
407 void bdrv_get_full_backing_filename(BlockDriverState
*bs
,
408 char *dest
, size_t sz
);
409 int bdrv_is_snapshot(BlockDriverState
*bs
);
411 int path_is_absolute(const char *path
);
412 void path_combine(char *dest
, int dest_size
,
413 const char *base_path
,
414 const char *filename
);
416 int bdrv_writev_vmstate(BlockDriverState
*bs
, QEMUIOVector
*qiov
, int64_t pos
);
417 int bdrv_save_vmstate(BlockDriverState
*bs
, const uint8_t *buf
,
418 int64_t pos
, int size
);
420 int bdrv_load_vmstate(BlockDriverState
*bs
, uint8_t *buf
,
421 int64_t pos
, int size
);
423 void bdrv_img_create(const char *filename
, const char *fmt
,
424 const char *base_filename
, const char *base_fmt
,
425 char *options
, uint64_t img_size
, int flags
,
426 Error
**errp
, bool quiet
);
428 /* Returns the alignment in bytes that is required so that no bounce buffer
429 * is required throughout the stack */
430 size_t bdrv_opt_mem_align(BlockDriverState
*bs
);
431 void bdrv_set_guest_block_size(BlockDriverState
*bs
, int align
);
432 void *qemu_blockalign(BlockDriverState
*bs
, size_t size
);
433 bool bdrv_qiov_is_aligned(BlockDriverState
*bs
, QEMUIOVector
*qiov
);
436 typedef struct BdrvDirtyBitmap BdrvDirtyBitmap
;
437 BdrvDirtyBitmap
*bdrv_create_dirty_bitmap(BlockDriverState
*bs
, int granularity
,
439 void bdrv_release_dirty_bitmap(BlockDriverState
*bs
, BdrvDirtyBitmap
*bitmap
);
440 BlockDirtyInfoList
*bdrv_query_dirty_bitmaps(BlockDriverState
*bs
);
441 int bdrv_get_dirty(BlockDriverState
*bs
, BdrvDirtyBitmap
*bitmap
, int64_t sector
);
442 void bdrv_set_dirty(BlockDriverState
*bs
, int64_t cur_sector
, int nr_sectors
);
443 void bdrv_reset_dirty(BlockDriverState
*bs
, int64_t cur_sector
, int nr_sectors
);
444 void bdrv_dirty_iter_init(BlockDriverState
*bs
,
445 BdrvDirtyBitmap
*bitmap
, struct HBitmapIter
*hbi
);
446 int64_t bdrv_get_dirty_count(BlockDriverState
*bs
, BdrvDirtyBitmap
*bitmap
);
448 void bdrv_enable_copy_on_read(BlockDriverState
*bs
);
449 void bdrv_disable_copy_on_read(BlockDriverState
*bs
);
451 void bdrv_ref(BlockDriverState
*bs
);
452 void bdrv_unref(BlockDriverState
*bs
);
453 void bdrv_set_in_use(BlockDriverState
*bs
, int in_use
);
454 int bdrv_in_use(BlockDriverState
*bs
);
456 #ifdef CONFIG_LINUX_AIO
457 int raw_get_aio_fd(BlockDriverState
*bs
);
459 static inline int raw_get_aio_fd(BlockDriverState
*bs
)
472 typedef struct BlockAcctCookie
{
474 int64_t start_time_ns
;
475 enum BlockAcctType type
;
478 void bdrv_acct_start(BlockDriverState
*bs
, BlockAcctCookie
*cookie
,
479 int64_t bytes
, enum BlockAcctType type
);
480 void bdrv_acct_done(BlockDriverState
*bs
, BlockAcctCookie
*cookie
);
485 BLKDBG_L1_GROW_ALLOC_TABLE
,
486 BLKDBG_L1_GROW_WRITE_TABLE
,
487 BLKDBG_L1_GROW_ACTIVATE_TABLE
,
491 BLKDBG_L2_UPDATE_COMPRESSED
,
492 BLKDBG_L2_ALLOC_COW_READ
,
493 BLKDBG_L2_ALLOC_WRITE
,
496 BLKDBG_READ_BACKING_AIO
,
497 BLKDBG_READ_COMPRESSED
,
500 BLKDBG_WRITE_COMPRESSED
,
508 BLKDBG_REFTABLE_LOAD
,
509 BLKDBG_REFTABLE_GROW
,
510 BLKDBG_REFTABLE_UPDATE
,
512 BLKDBG_REFBLOCK_LOAD
,
513 BLKDBG_REFBLOCK_UPDATE
,
514 BLKDBG_REFBLOCK_UPDATE_PART
,
515 BLKDBG_REFBLOCK_ALLOC
,
516 BLKDBG_REFBLOCK_ALLOC_HOOKUP
,
517 BLKDBG_REFBLOCK_ALLOC_WRITE
,
518 BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS
,
519 BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE
,
520 BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE
,
522 BLKDBG_CLUSTER_ALLOC
,
523 BLKDBG_CLUSTER_ALLOC_BYTES
,
527 BLKDBG_FLUSH_TO_DISK
,
529 BLKDBG_PWRITEV_RMW_HEAD
,
530 BLKDBG_PWRITEV_RMW_AFTER_HEAD
,
531 BLKDBG_PWRITEV_RMW_TAIL
,
532 BLKDBG_PWRITEV_RMW_AFTER_TAIL
,
540 #define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt)
541 void bdrv_debug_event(BlockDriverState
*bs
, BlkDebugEvent event
);
543 int bdrv_debug_breakpoint(BlockDriverState
*bs
, const char *event
,
545 int bdrv_debug_remove_breakpoint(BlockDriverState
*bs
, const char *tag
);
546 int bdrv_debug_resume(BlockDriverState
*bs
, const char *tag
);
547 bool bdrv_debug_is_suspended(BlockDriverState
*bs
, const char *tag
);