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authorKevin Wolf <kwolf@redhat.com>2014-03-11 15:15:03 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2014-03-13 14:42:24 +0100
commit27eb6c097c132bf9fc49d73554b0160293b630cd (patch)
treeb3dac7c354bc8f8f2fa115ff5fa7e467617c02b2 /block.c
parentd475e5acd2f4679d6ce458369ee658dbd60227e9 (diff)
qcow2: Don't write with BDRV_O_INCOMING
qcow2_open() causes writes when repairing an image with the dirty flag set and when clearing autoclear flags. It shouldn't do this when another qemu instance is still actively working on this image file. One effect of the bug is that images may have a cleared dirty flag while the migration source host still has it in use with lazy refcounts enabled, so refcounts are not accurate and the dirty flag must remain set. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block.c')
0 files changed, 0 insertions, 0 deletions