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authorStefan Hajnoczi <stefanha@linux.vnet.ibm.com>2012-07-27 09:05:18 +0100
committerKevin Wolf <kwolf@redhat.com>2012-08-06 22:39:14 +0200
commit0f6d767aa84676a2374d38797f42df4595415369 (patch)
tree199c11ba0e274a5b93cb1f8b2059ccf60a00b0c8 /tests/qemu-iotests
parente77964f79b905760ce7f0406fc6b988daeabbb65 (diff)
docs: add dirty bit to qcow2 specification
The dirty bit will make it possible to perform lazy refcount updates, where the image file is not kept consistent all the time. Upon opening a dirty image file, it is necessary to perform a consistency check and repair any incorrect refcounts. Therefore the dirty bit must be an incompatible feature bit. We don't want old programs accessing a file with stale refcounts. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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