Re: [Qemu-devel] [PATCH] block: Don't probe for unknown backing file format

2014-11-25 Thread Stefan Hajnoczi
On Tue, Nov 25, 2014 at 03:19:24PM +0100, Kevin Wolf wrote: > If a qcow2 image specifies a backing file format that doesn't correspond > to any format driver that qemu knows, we shouldn't fall back to probing, > but simply error out. > > Not looking up the backing file driver in bdrv_open_backing_

Re: [Qemu-devel] [PATCH] block: Don't probe for unknown backing file format

2014-11-25 Thread Max Reitz
On 2014-11-25 at 15:19, Kevin Wolf wrote: If a qcow2 image specifies a backing file format that doesn't correspond to any format driver that qemu knows, we shouldn't fall back to probing, but simply error out. Not looking up the backing file driver in bdrv_open_backing_file(), but just filling i

Re: [Qemu-devel] [PATCH] block: Don't probe for unknown backing file format

2014-11-25 Thread Max Reitz
On 2014-11-25 at 15:48, Max Reitz wrote: On 2014-11-25 at 15:19, Kevin Wolf wrote: If a qcow2 image specifies a backing file format that doesn't correspond to any format driver that qemu knows, we shouldn't fall back to probing, but simply error out. Not looking up the backing file driver in bd

[Qemu-devel] [PATCH] block: Don't probe for unknown backing file format

2014-11-25 Thread Kevin Wolf
If a qcow2 image specifies a backing file format that doesn't correspond to any format driver that qemu knows, we shouldn't fall back to probing, but simply error out. Not looking up the backing file driver in bdrv_open_backing_file(), but just filling in the "driver" option if it isn't there move