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authorLiu Yuan <tailai.ly@taobao.com>2012-04-20 17:10:56 +0800
committerKevin Wolf <kwolf@redhat.com>2012-04-20 11:42:41 +0200
commit80ccf93b884a2edab5ec62634758e942bba81b7c (patch)
tree80603fd6aa5aeb15f71b15c5b201885118c99647 /Makefile.dis
parent9eb0bfca960b8cf24fb42e017c3a6479e5676f75 (diff)
qemu-img: let 'qemu-img convert' flush data
The 'qemu-img convert -h' advertise that the default cache mode is 'writeback', while in fact it is 'unsafe'. This patch 1) fix the help manual and 2) let bdrv_close() call bdrv_flush() 2) is needed because some backend storage doesn't have a self-flush mechanism(for e.g., sheepdog), so we need to call bdrv_flush() to make sure the image is really writen to the storage instead of hanging around writeback cache forever. Signed-off-by: Liu Yuan <tailai.ly@taobao.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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