tree 594c07299d7177e99d12ba97651b3ffd17631e75
parent 9b80ddf3460f5513b917720a07a1d32ec4ba1817
author aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> 1238262910 +0000
committer aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> 1238262910 +0000

block: support known backing format for image create and open (Uri Lublin)

Added a backing_format field to BlockDriverState.
Added bdrv_create2 and drv->bdrv_create2 to create an image with
a known backing file format.
Upon bdrv_open2 if backing format is known use it, instead of
probing the (backing) image.

Signed-off-by: Uri Lublin <uril@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6908 c046a42c-6fe2-441c-8c8c-71466251a162