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| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2012-07-27 09:05:19 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2012-08-06 22:39:14 +0200 |
| commit | c61d0004bc37182cae0f92a865ad2f0625762610 (patch) | |
| tree | e1a72496aff38b75331d2ec30fb810c55ba318a5 /block/qcow2.h | |
| parent | 0f6d767aa84676a2374d38797f42df4595415369 (diff) | |
| download | qemu-c61d0004bc37182cae0f92a865ad2f0625762610.tar.gz | |
qcow2: introduce dirty bit
This patch adds an incompatible feature bit to mark images that have not
been closed cleanly. When a dirty image file is opened a consistency
check and repair is performed.
Update qemu-iotests 031 and 036 since the extension header size changes
when we add feature bit table entries.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/qcow2.h')
| -rw-r--r-- | block/qcow2.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/block/qcow2.h b/block/qcow2.h index 455b6d7cfe..b5fefc08f7 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -110,6 +110,14 @@ enum { QCOW2_FEAT_TYPE_AUTOCLEAR = 2, }; +/* Incompatible feature bits */ +enum { + QCOW2_INCOMPAT_DIRTY_BITNR = 0, + QCOW2_INCOMPAT_DIRTY = 1 << QCOW2_INCOMPAT_DIRTY_BITNR, + + QCOW2_INCOMPAT_MASK = QCOW2_INCOMPAT_DIRTY, +}; + typedef struct Qcow2Feature { uint8_t type; uint8_t bit; |