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git.proxmox.com Git - mirror_qemu.git/blob - include/block/dirty-bitmap.h
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1 #ifndef BLOCK_DIRTY_BITMAP_H
2 #define BLOCK_DIRTY_BITMAP_H
4 #include "qapi/qapi-types-block-core.h"
5 #include "qemu/hbitmap.h"
7 typedef enum BitmapCheckFlags
{
10 BDRV_BITMAP_INCONSISTENT
= 4,
13 #define BDRV_BITMAP_DEFAULT (BDRV_BITMAP_BUSY | BDRV_BITMAP_RO | \
14 BDRV_BITMAP_INCONSISTENT)
15 #define BDRV_BITMAP_ALLOW_RO (BDRV_BITMAP_BUSY | BDRV_BITMAP_INCONSISTENT)
17 #define BDRV_BITMAP_MAX_NAME_SIZE 1023
19 bool bdrv_supports_persistent_dirty_bitmap(BlockDriverState
*bs
);
20 BdrvDirtyBitmap
*bdrv_create_dirty_bitmap(BlockDriverState
*bs
,
24 int bdrv_dirty_bitmap_create_successor(BdrvDirtyBitmap
*bitmap
,
26 BdrvDirtyBitmap
*bdrv_dirty_bitmap_abdicate(BdrvDirtyBitmap
*bitmap
,
28 BdrvDirtyBitmap
*bdrv_reclaim_dirty_bitmap(BdrvDirtyBitmap
*bitmap
,
30 void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap
*bitmap
);
31 BdrvDirtyBitmap
*bdrv_find_dirty_bitmap(BlockDriverState
*bs
,
33 int bdrv_dirty_bitmap_check(const BdrvDirtyBitmap
*bitmap
, uint32_t flags
,
35 void bdrv_release_dirty_bitmap(BdrvDirtyBitmap
*bitmap
);
36 void bdrv_release_named_dirty_bitmaps(BlockDriverState
*bs
);
37 int bdrv_remove_persistent_dirty_bitmap(BlockDriverState
*bs
, const char *name
,
39 void bdrv_disable_dirty_bitmap(BdrvDirtyBitmap
*bitmap
);
40 void bdrv_enable_dirty_bitmap(BdrvDirtyBitmap
*bitmap
);
41 void bdrv_enable_dirty_bitmap_locked(BdrvDirtyBitmap
*bitmap
);
42 BlockDirtyInfoList
*bdrv_query_dirty_bitmaps(BlockDriverState
*bs
);
43 uint32_t bdrv_get_default_bitmap_granularity(BlockDriverState
*bs
);
44 uint32_t bdrv_dirty_bitmap_granularity(const BdrvDirtyBitmap
*bitmap
);
45 bool bdrv_dirty_bitmap_enabled(BdrvDirtyBitmap
*bitmap
);
46 bool bdrv_dirty_bitmap_has_successor(BdrvDirtyBitmap
*bitmap
);
47 const char *bdrv_dirty_bitmap_name(const BdrvDirtyBitmap
*bitmap
);
48 int64_t bdrv_dirty_bitmap_size(const BdrvDirtyBitmap
*bitmap
);
49 DirtyBitmapStatus
bdrv_dirty_bitmap_status(BdrvDirtyBitmap
*bitmap
);
50 void bdrv_set_dirty_bitmap(BdrvDirtyBitmap
*bitmap
,
51 int64_t offset
, int64_t bytes
);
52 void bdrv_reset_dirty_bitmap(BdrvDirtyBitmap
*bitmap
,
53 int64_t offset
, int64_t bytes
);
54 BdrvDirtyBitmapIter
*bdrv_dirty_iter_new(BdrvDirtyBitmap
*bitmap
);
55 void bdrv_dirty_iter_free(BdrvDirtyBitmapIter
*iter
);
57 uint64_t bdrv_dirty_bitmap_serialization_size(const BdrvDirtyBitmap
*bitmap
,
58 uint64_t offset
, uint64_t bytes
);
59 uint64_t bdrv_dirty_bitmap_serialization_align(const BdrvDirtyBitmap
*bitmap
);
60 uint64_t bdrv_dirty_bitmap_serialization_coverage(int serialized_chunk_size
,
61 const BdrvDirtyBitmap
*bitmap
);
62 void bdrv_dirty_bitmap_serialize_part(const BdrvDirtyBitmap
*bitmap
,
63 uint8_t *buf
, uint64_t offset
,
65 void bdrv_dirty_bitmap_deserialize_part(BdrvDirtyBitmap
*bitmap
,
66 uint8_t *buf
, uint64_t offset
,
67 uint64_t bytes
, bool finish
);
68 void bdrv_dirty_bitmap_deserialize_zeroes(BdrvDirtyBitmap
*bitmap
,
69 uint64_t offset
, uint64_t bytes
,
71 void bdrv_dirty_bitmap_deserialize_ones(BdrvDirtyBitmap
*bitmap
,
72 uint64_t offset
, uint64_t bytes
,
74 void bdrv_dirty_bitmap_deserialize_finish(BdrvDirtyBitmap
*bitmap
);
76 void bdrv_dirty_bitmap_set_readonly(BdrvDirtyBitmap
*bitmap
, bool value
);
77 void bdrv_dirty_bitmap_set_persistence(BdrvDirtyBitmap
*bitmap
,
79 void bdrv_dirty_bitmap_set_inconsistent(BdrvDirtyBitmap
*bitmap
);
80 void bdrv_dirty_bitmap_set_busy(BdrvDirtyBitmap
*bitmap
, bool busy
);
81 void bdrv_merge_dirty_bitmap(BdrvDirtyBitmap
*dest
, const BdrvDirtyBitmap
*src
,
82 HBitmap
**backup
, Error
**errp
);
83 void bdrv_dirty_bitmap_skip_store(BdrvDirtyBitmap
*bitmap
, bool skip
);
84 bool bdrv_dirty_bitmap_get(BdrvDirtyBitmap
*bitmap
, int64_t offset
);
86 /* Functions that require manual locking. */
87 void bdrv_dirty_bitmap_lock(BdrvDirtyBitmap
*bitmap
);
88 void bdrv_dirty_bitmap_unlock(BdrvDirtyBitmap
*bitmap
);
89 bool bdrv_dirty_bitmap_get_locked(BdrvDirtyBitmap
*bitmap
, int64_t offset
);
90 void bdrv_set_dirty_bitmap_locked(BdrvDirtyBitmap
*bitmap
,
91 int64_t offset
, int64_t bytes
);
92 void bdrv_reset_dirty_bitmap_locked(BdrvDirtyBitmap
*bitmap
,
93 int64_t offset
, int64_t bytes
);
94 int64_t bdrv_dirty_iter_next(BdrvDirtyBitmapIter
*iter
);
95 void bdrv_set_dirty_iter(BdrvDirtyBitmapIter
*hbi
, int64_t offset
);
96 int64_t bdrv_get_dirty_count(BdrvDirtyBitmap
*bitmap
);
97 void bdrv_dirty_bitmap_truncate(BlockDriverState
*bs
, int64_t bytes
);
98 bool bdrv_dirty_bitmap_readonly(const BdrvDirtyBitmap
*bitmap
);
99 bool bdrv_has_readonly_bitmaps(BlockDriverState
*bs
);
100 bool bdrv_has_named_bitmaps(BlockDriverState
*bs
);
101 bool bdrv_dirty_bitmap_get_autoload(const BdrvDirtyBitmap
*bitmap
);
102 bool bdrv_dirty_bitmap_get_persistence(BdrvDirtyBitmap
*bitmap
);
103 bool bdrv_dirty_bitmap_inconsistent(const BdrvDirtyBitmap
*bitmap
);
105 BdrvDirtyBitmap
*bdrv_dirty_bitmap_first(BlockDriverState
*bs
);
106 BdrvDirtyBitmap
*bdrv_dirty_bitmap_next(BdrvDirtyBitmap
*bitmap
);
107 #define FOR_EACH_DIRTY_BITMAP(bs, bitmap) \
108 for (bitmap = bdrv_dirty_bitmap_first(bs); bitmap; \
109 bitmap = bdrv_dirty_bitmap_next(bitmap))
111 char *bdrv_dirty_bitmap_sha256(const BdrvDirtyBitmap
*bitmap
, Error
**errp
);
112 int64_t bdrv_dirty_bitmap_next_dirty(BdrvDirtyBitmap
*bitmap
, int64_t offset
,
114 int64_t bdrv_dirty_bitmap_next_zero(BdrvDirtyBitmap
*bitmap
, int64_t offset
,
116 bool bdrv_dirty_bitmap_next_dirty_area(BdrvDirtyBitmap
*bitmap
,
117 int64_t start
, int64_t end
, int64_t max_dirty_count
,
118 int64_t *dirty_start
, int64_t *dirty_count
);
119 BdrvDirtyBitmap
*bdrv_reclaim_dirty_bitmap_locked(BdrvDirtyBitmap
*bitmap
,