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block migration: Increase dirty chunk size to 1M 

4K is too small for efficiently saving and restoring multi-GB block
devices.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Jan Kiszka 2009-11-30 18:21:22 +01:00 committed by Anthony Liguori
parent 01e61e2d16
commit 23bd90d2f9
1 changed files with 1 additions and 1 deletions
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2
block.h
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@ -192,7 +192,7 @@ int bdrv_save_vmstate(BlockDriverState *bs, const uint8_t *buf,
int bdrv_load_vmstate(BlockDriverState *bs, uint8_t *buf,
int64_t pos, int size);
#define BDRV_SECTORS_PER_DIRTY_CHUNK 8
#define BDRV_SECTORS_PER_DIRTY_CHUNK 2048
void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable);
int bdrv_get_dirty(BlockDriverState *bs, int64_t sector);