diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/block/block-copy.h | 61 | ||||
| -rw-r--r-- | include/block/block.h | 10 | ||||
| -rw-r--r-- | include/block/block_int.h | 15 | ||||
| -rw-r--r-- | include/block/blockjob_int.h | 2 | ||||
| -rw-r--r-- | include/qapi/util.h | 13 | ||||
| -rw-r--r-- | include/sysemu/block-backend.h | 3 |
6 files changed, 91 insertions, 13 deletions
diff --git a/include/block/block-copy.h b/include/block/block-copy.h index aac85e1488..338f2ea7fd 100644 --- a/include/block/block-copy.h +++ b/include/block/block-copy.h @@ -18,19 +18,15 @@ #include "block/block.h" #include "qemu/co-shared-resource.h" -typedef void (*ProgressBytesCallbackFunc)(int64_t bytes, void *opaque); +typedef void (*BlockCopyAsyncCallbackFunc)(void *opaque); typedef struct BlockCopyState BlockCopyState; +typedef struct BlockCopyCallState BlockCopyCallState; BlockCopyState *block_copy_state_new(BdrvChild *source, BdrvChild *target, - int64_t cluster_size, + int64_t cluster_size, bool use_copy_range, BdrvRequestFlags write_flags, Error **errp); -void block_copy_set_progress_callback( - BlockCopyState *s, - ProgressBytesCallbackFunc progress_bytes_callback, - void *progress_opaque); - void block_copy_set_progress_meter(BlockCopyState *s, ProgressMeter *pm); void block_copy_state_free(BlockCopyState *s); @@ -39,7 +35,56 @@ int64_t block_copy_reset_unallocated(BlockCopyState *s, int64_t offset, int64_t *count); int coroutine_fn block_copy(BlockCopyState *s, int64_t offset, int64_t bytes, - bool *error_is_read); + bool ignore_ratelimit); + +/* + * Run block-copy in a coroutine, create corresponding BlockCopyCallState + * object and return pointer to it. Never returns NULL. + * + * Caller is responsible to call block_copy_call_free() to free + * BlockCopyCallState object. + * + * @max_workers means maximum of parallel coroutines to execute sub-requests, + * must be > 0. + * + * @max_chunk means maximum length for one IO operation. Zero means unlimited. + */ +BlockCopyCallState *block_copy_async(BlockCopyState *s, + int64_t offset, int64_t bytes, + int max_workers, int64_t max_chunk, + BlockCopyAsyncCallbackFunc cb, + void *cb_opaque); + +/* + * Free finished BlockCopyCallState. Trying to free running + * block-copy will crash. + */ +void block_copy_call_free(BlockCopyCallState *call_state); + +/* + * Note, that block-copy call is marked finished prior to calling + * the callback. + */ +bool block_copy_call_finished(BlockCopyCallState *call_state); +bool block_copy_call_succeeded(BlockCopyCallState *call_state); +bool block_copy_call_failed(BlockCopyCallState *call_state); +bool block_copy_call_cancelled(BlockCopyCallState *call_state); +int block_copy_call_status(BlockCopyCallState *call_state, bool *error_is_read); + +void block_copy_set_speed(BlockCopyState *s, uint64_t speed); +void block_copy_kick(BlockCopyCallState *call_state); + +/* + * Cancel running block-copy call. + * + * Cancel leaves block-copy state valid: dirty bits are correct and you may use + * cancel + <run block_copy with same parameters> to emulate pause/resume. + * + * Note also, that the cancel is async: it only marks block-copy call to be + * cancelled. So, the call may be cancelled (block_copy_call_cancelled() reports + * true) but not yet finished (block_copy_call_finished() reports false). + */ +void block_copy_call_cancel(BlockCopyCallState *call_state); BdrvDirtyBitmap *block_copy_dirty_bitmap(BlockCopyState *s); void block_copy_set_skip_unallocated(BlockCopyState *s, bool skip); diff --git a/include/block/block.h b/include/block/block.h index a193545b6a..81fcaad5ac 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -72,9 +72,11 @@ typedef enum { BDRV_REQ_NO_FALLBACK = 0x100, /* - * BDRV_REQ_PREFETCH may be used only together with BDRV_REQ_COPY_ON_READ - * on read request and means that caller doesn't really need data to be - * written to qiov parameter which may be NULL. + * BDRV_REQ_PREFETCH makes sense only in the context of copy-on-read + * (i.e., together with the BDRV_REQ_COPY_ON_READ flag or when a COR + * filter is involved), in which case it signals that the COR operation + * need not read the data into memory (qiov) but only ensure they are + * copied to the top layer (i.e., that COR operation is done). */ BDRV_REQ_PREFETCH = 0x200, @@ -358,6 +360,8 @@ void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top, Error **errp); void bdrv_replace_node(BlockDriverState *from, BlockDriverState *to, Error **errp); +BlockDriverState *bdrv_insert_node(BlockDriverState *bs, QDict *node_options, + int flags, Error **errp); int bdrv_parse_aio(const char *mode, int *flags); int bdrv_parse_cache_mode(const char *mode, int *flags, bool *writethrough); diff --git a/include/block/block_int.h b/include/block/block_int.h index b9ef61fe4d..d01fc23720 100644 --- a/include/block/block_int.h +++ b/include/block/block_int.h @@ -881,6 +881,10 @@ struct BlockDriverState { /* I/O Limits */ BlockLimits bl; + /* + * Flags honored during pread + */ + unsigned int supported_read_flags; /* Flags honored during pwrite (so far: BDRV_REQ_FUA, * BDRV_REQ_WRITE_UNCHANGED). * If a driver does not support BDRV_REQ_WRITE_UNCHANGED, those @@ -1143,6 +1147,9 @@ int is_windows_drive(const char *filename); * See @BlockJobCreateFlags * @speed: The maximum speed, in bytes per second, or 0 for unlimited. * @on_error: The action to take upon error. + * @filter_node_name: The node name that should be assigned to the filter + * driver that the stream job inserts into the graph above + * @bs. NULL means that a node name should be autogenerated. * @errp: Error object. * * Start a streaming operation on @bs. Clusters that are unallocated @@ -1154,8 +1161,11 @@ int is_windows_drive(const char *filename); */ void stream_start(const char *job_id, BlockDriverState *bs, BlockDriverState *base, const char *backing_file_str, + BlockDriverState *bottom, int creation_flags, int64_t speed, - BlockdevOnError on_error, Error **errp); + BlockdevOnError on_error, + const char *filter_node_name, + Error **errp); /** * commit_start: @@ -1256,6 +1266,8 @@ void mirror_start(const char *job_id, BlockDriverState *bs, * @sync_mode: What parts of the disk image should be copied to the destination. * @sync_bitmap: The dirty bitmap if sync_mode is 'bitmap' or 'incremental' * @bitmap_mode: The bitmap synchronization policy to use. + * @perf: Performance options. All actual fields assumed to be present, + * all ".has_*" fields are ignored. * @on_source_error: The action to take upon error reading from the source. * @on_target_error: The action to take upon error writing to the target. * @creation_flags: Flags that control the behavior of the Job lifetime. @@ -1274,6 +1286,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs, BitmapSyncMode bitmap_mode, bool compress, const char *filter_node_name, + BackupPerf *perf, BlockdevOnError on_source_error, BlockdevOnError on_target_error, int creation_flags, diff --git a/include/block/blockjob_int.h b/include/block/blockjob_int.h index e2824a36a8..6633d83da2 100644 --- a/include/block/blockjob_int.h +++ b/include/block/blockjob_int.h @@ -52,6 +52,8 @@ struct BlockJobDriver { * besides job->blk to the new AioContext. */ void (*attached_aio_context)(BlockJob *job, AioContext *new_context); + + void (*set_speed)(BlockJob *job, int64_t speed); }; /** diff --git a/include/qapi/util.h b/include/qapi/util.h index 6178e98e97..d7bfb30e25 100644 --- a/include/qapi/util.h +++ b/include/qapi/util.h @@ -37,4 +37,17 @@ int parse_qapi_name(const char *name, bool complete); (list) = _tmp; \ } while (0) +/* + * For any pointer to a GenericList @tail (usually the 'next' member of a + * list element), insert @element at the back and update the tail. + * + * Note that this macro evaluates @element exactly once, so it is safe + * to have side-effects with that argument. + */ +#define QAPI_LIST_APPEND(tail, element) do { \ + *(tail) = g_malloc0(sizeof(**(tail))); \ + (*(tail))->value = (element); \ + (tail) = &(*(tail))->next; \ +} while (0) + #endif diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 8203d7f6f9..880e903293 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -191,7 +191,8 @@ BlockErrorAction blk_get_error_action(BlockBackend *blk, bool is_read, int error); void blk_error_action(BlockBackend *blk, BlockErrorAction action, bool is_read, int error); -bool blk_is_read_only(BlockBackend *blk); +bool blk_supports_write_perm(BlockBackend *blk); +bool blk_is_writable(BlockBackend *blk); bool blk_is_sg(BlockBackend *blk); bool blk_enable_write_cache(BlockBackend *blk); void blk_set_enable_write_cache(BlockBackend *blk, bool wce); |