1ebab2259SFam Zheng #ifndef BLOCK_DIRTY_BITMAP_H 2ebab2259SFam Zheng #define BLOCK_DIRTY_BITMAP_H 3ebab2259SFam Zheng 49af23989SMarkus Armbruster #include "qapi/qapi-types-block-core.h" 5ebab2259SFam Zheng #include "qemu/hbitmap.h" 6ebab2259SFam Zheng 73ae96d66SJohn Snow typedef enum BitmapCheckFlags { 83ae96d66SJohn Snow BDRV_BITMAP_BUSY = 1, 93ae96d66SJohn Snow BDRV_BITMAP_RO = 2, 103ae96d66SJohn Snow BDRV_BITMAP_INCONSISTENT = 4, 113ae96d66SJohn Snow } BitmapCheckFlags; 123ae96d66SJohn Snow 133ae96d66SJohn Snow #define BDRV_BITMAP_DEFAULT (BDRV_BITMAP_BUSY | BDRV_BITMAP_RO | \ 143ae96d66SJohn Snow BDRV_BITMAP_INCONSISTENT) 153ae96d66SJohn Snow #define BDRV_BITMAP_ALLOW_RO (BDRV_BITMAP_BUSY | BDRV_BITMAP_INCONSISTENT) 163ae96d66SJohn Snow 17ebab2259SFam Zheng BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs, 18ebab2259SFam Zheng uint32_t granularity, 19ebab2259SFam Zheng const char *name, 20ebab2259SFam Zheng Error **errp); 21fb933437SFam Zheng void bdrv_create_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap, 22fb933437SFam Zheng int chunk_size); 23fb933437SFam Zheng void bdrv_release_meta_dirty_bitmap(BdrvDirtyBitmap *bitmap); 24ebab2259SFam Zheng int bdrv_dirty_bitmap_create_successor(BlockDriverState *bs, 25ebab2259SFam Zheng BdrvDirtyBitmap *bitmap, 26ebab2259SFam Zheng Error **errp); 27ebab2259SFam Zheng BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriverState *bs, 28ebab2259SFam Zheng BdrvDirtyBitmap *bitmap, 29ebab2259SFam Zheng Error **errp); 30ebab2259SFam Zheng BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BlockDriverState *bs, 31ebab2259SFam Zheng BdrvDirtyBitmap *bitmap, 32ebab2259SFam Zheng Error **errp); 33e73a265eSVladimir Sementsov-Ogievskiy void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap); 34ebab2259SFam Zheng BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs, 35ebab2259SFam Zheng const char *name); 363ae96d66SJohn Snow int bdrv_dirty_bitmap_check(const BdrvDirtyBitmap *bitmap, uint32_t flags, 373ae96d66SJohn Snow Error **errp); 38ebab2259SFam Zheng void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap); 39ebab2259SFam Zheng void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs); 4056f364e6SVladimir Sementsov-Ogievskiy void bdrv_remove_persistent_dirty_bitmap(BlockDriverState *bs, 4156f364e6SVladimir Sementsov-Ogievskiy const char *name, 4256f364e6SVladimir Sementsov-Ogievskiy Error **errp); 43ebab2259SFam Zheng void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap *bitmap); 44ebab2259SFam Zheng void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap *bitmap); 4592bcea40SVladimir Sementsov-Ogievskiy void bdrv_enable_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap); 46ebab2259SFam Zheng BlockDirtyInfoList *bdrv_query_dirty_bitmaps(BlockDriverState *bs); 47ebab2259SFam Zheng uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState *bs); 48ba06ff1aSVladimir Sementsov-Ogievskiy uint32_t bdrv_dirty_bitmap_granularity(const BdrvDirtyBitmap *bitmap); 49ebab2259SFam Zheng bool bdrv_dirty_bitmap_enabled(BdrvDirtyBitmap *bitmap); 5050a47257SJohn Snow bool bdrv_dirty_bitmap_has_successor(BdrvDirtyBitmap *bitmap); 5115891facSFam Zheng const char *bdrv_dirty_bitmap_name(const BdrvDirtyBitmap *bitmap); 5215891facSFam Zheng int64_t bdrv_dirty_bitmap_size(const BdrvDirtyBitmap *bitmap); 53ebab2259SFam Zheng DirtyBitmapStatus bdrv_dirty_bitmap_status(BdrvDirtyBitmap *bitmap); 54ebab2259SFam Zheng void bdrv_set_dirty_bitmap(BdrvDirtyBitmap *bitmap, 55e0d7f73eSEric Blake int64_t offset, int64_t bytes); 56ebab2259SFam Zheng void bdrv_reset_dirty_bitmap(BdrvDirtyBitmap *bitmap, 57e0d7f73eSEric Blake int64_t offset, int64_t bytes); 586d3f4049SFam Zheng BdrvDirtyBitmapIter *bdrv_dirty_meta_iter_new(BdrvDirtyBitmap *bitmap); 59715a74d8SEric Blake BdrvDirtyBitmapIter *bdrv_dirty_iter_new(BdrvDirtyBitmap *bitmap); 60dc162c8eSFam Zheng void bdrv_dirty_iter_free(BdrvDirtyBitmapIter *iter); 61ebab2259SFam Zheng 62882c36f5SVladimir Sementsov-Ogievskiy uint64_t bdrv_dirty_bitmap_serialization_size(const BdrvDirtyBitmap *bitmap, 6386f6ae67SEric Blake uint64_t offset, uint64_t bytes); 64882c36f5SVladimir Sementsov-Ogievskiy uint64_t bdrv_dirty_bitmap_serialization_align(const BdrvDirtyBitmap *bitmap); 65882c36f5SVladimir Sementsov-Ogievskiy void bdrv_dirty_bitmap_serialize_part(const BdrvDirtyBitmap *bitmap, 6686f6ae67SEric Blake uint8_t *buf, uint64_t offset, 6786f6ae67SEric Blake uint64_t bytes); 68882c36f5SVladimir Sementsov-Ogievskiy void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap *bitmap, 6986f6ae67SEric Blake uint8_t *buf, uint64_t offset, 7086f6ae67SEric Blake uint64_t bytes, bool finish); 71882c36f5SVladimir Sementsov-Ogievskiy void bdrv_dirty_bitmap_deserialize_zeroes(BdrvDirtyBitmap *bitmap, 7286f6ae67SEric Blake uint64_t offset, uint64_t bytes, 73882c36f5SVladimir Sementsov-Ogievskiy bool finish); 746bdc8b71SVladimir Sementsov-Ogievskiy void bdrv_dirty_bitmap_deserialize_ones(BdrvDirtyBitmap *bitmap, 7586f6ae67SEric Blake uint64_t offset, uint64_t bytes, 766bdc8b71SVladimir Sementsov-Ogievskiy bool finish); 77882c36f5SVladimir Sementsov-Ogievskiy void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap *bitmap); 78882c36f5SVladimir Sementsov-Ogievskiy 79d6883bc9SVladimir Sementsov-Ogievskiy void bdrv_dirty_bitmap_set_readonly(BdrvDirtyBitmap *bitmap, bool value); 80796a3798SEric Blake void bdrv_dirty_bitmap_set_persistence(BdrvDirtyBitmap *bitmap, 81a88b179fSVladimir Sementsov-Ogievskiy bool persistent); 82b0f45559SJohn Snow void bdrv_dirty_bitmap_set_inconsistent(BdrvDirtyBitmap *bitmap); 8327a1b301SJohn Snow void bdrv_dirty_bitmap_set_busy(BdrvDirtyBitmap *bitmap, bool busy); 84b598e531SVladimir Sementsov-Ogievskiy void bdrv_merge_dirty_bitmap(BdrvDirtyBitmap *dest, const BdrvDirtyBitmap *src, 85fa000f2fSVladimir Sementsov-Ogievskiy HBitmap **backup, Error **errp); 86*c4e4b0faSJohn Snow void bdrv_dirty_bitmap_skip_store(BdrvDirtyBitmap *bitmap, bool skip); 8728636b82SJohn Snow bool bdrv_dirty_bitmap_get(BdrvDirtyBitmap *bitmap, int64_t offset); 88d6883bc9SVladimir Sementsov-Ogievskiy 89b64bd51eSPaolo Bonzini /* Functions that require manual locking. */ 90b64bd51eSPaolo Bonzini void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap *bitmap); 91b64bd51eSPaolo Bonzini void bdrv_dirty_bitmap_unlock(BdrvDirtyBitmap *bitmap); 9228636b82SJohn Snow bool bdrv_dirty_bitmap_get_locked(BdrvDirtyBitmap *bitmap, int64_t offset); 93b64bd51eSPaolo Bonzini void bdrv_set_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap, 94e0d7f73eSEric Blake int64_t offset, int64_t bytes); 95b64bd51eSPaolo Bonzini void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap, 96e0d7f73eSEric Blake int64_t offset, int64_t bytes); 97b64bd51eSPaolo Bonzini int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter *iter); 98715a74d8SEric Blake void bdrv_set_dirty_iter(BdrvDirtyBitmapIter *hbi, int64_t offset); 99b64bd51eSPaolo Bonzini int64_t bdrv_get_dirty_count(BdrvDirtyBitmap *bitmap); 100b64bd51eSPaolo Bonzini int64_t bdrv_get_meta_dirty_count(BdrvDirtyBitmap *bitmap); 1011b6cc579SEric Blake void bdrv_dirty_bitmap_truncate(BlockDriverState *bs, int64_t bytes); 102d6883bc9SVladimir Sementsov-Ogievskiy bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap *bitmap); 103d6883bc9SVladimir Sementsov-Ogievskiy bool bdrv_has_readonly_bitmaps(BlockDriverState *bs); 104a0319aacSVladimir Sementsov-Ogievskiy bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap *bitmap); 105796a3798SEric Blake bool bdrv_dirty_bitmap_get_persistence(BdrvDirtyBitmap *bitmap); 106b0f45559SJohn Snow bool bdrv_dirty_bitmap_inconsistent(const BdrvDirtyBitmap *bitmap); 107a88b179fSVladimir Sementsov-Ogievskiy bool bdrv_has_changed_persistent_bitmaps(BlockDriverState *bs); 1083dd10a06SVladimir Sementsov-Ogievskiy BdrvDirtyBitmap *bdrv_dirty_bitmap_next(BlockDriverState *bs, 1093dd10a06SVladimir Sementsov-Ogievskiy BdrvDirtyBitmap *bitmap); 110a3b52535SVladimir Sementsov-Ogievskiy char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap *bitmap, Error **errp); 11176d570dcSVladimir Sementsov-Ogievskiy int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap *bitmap, uint64_t offset, 11276d570dcSVladimir Sementsov-Ogievskiy uint64_t bytes); 113a78a1a48SVladimir Sementsov-Ogievskiy bool bdrv_dirty_bitmap_next_dirty_area(BdrvDirtyBitmap *bitmap, 114a78a1a48SVladimir Sementsov-Ogievskiy uint64_t *offset, uint64_t *bytes); 115044ee8e1SVladimir Sementsov-Ogievskiy BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BlockDriverState *bs, 116044ee8e1SVladimir Sementsov-Ogievskiy BdrvDirtyBitmap *bitmap, 117044ee8e1SVladimir Sementsov-Ogievskiy Error **errp); 118b64bd51eSPaolo Bonzini 119ebab2259SFam Zheng #endif 120