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H A Dqemu-img.cdiff b783e409bf17b92f4af8dc5d6bd040d0092f33e0 Tue Jan 12 05:55:16 CST 2010 Kevin Wolf <kwolf@redhat.com> block: Introduce BDRV_O_NO_BACKING

If an image references a backing file that doesn't exist, qemu-img info fails
to open this image. Exactly in this case the info would be valuable, though:
the user might want to find out which file is missing.

This patch introduces a BDRV_O_NO_BACKING flag to ignore the backing file when
opening the image. qemu-img info is the first user and provides info now even
if the backing file is invalid.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
H A Dblock.cdiff b783e409bf17b92f4af8dc5d6bd040d0092f33e0 Tue Jan 12 05:55:16 CST 2010 Kevin Wolf <kwolf@redhat.com> block: Introduce BDRV_O_NO_BACKING

If an image references a backing file that doesn't exist, qemu-img info fails
to open this image. Exactly in this case the info would be valuable, though:
the user might want to find out which file is missing.

This patch introduces a BDRV_O_NO_BACKING flag to ignore the backing file when
opening the image. qemu-img info is the first user and provides info now even
if the backing file is invalid.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>