Re: [libvirt] [PATCH] qemu: blockcopy: Forbid using persistent bitmap granularity with raw vols

On 06/24/2015 03:11 PM, Peter Krempa wrote: > qemu returns error but only in the event after the block job actually > starts. Reject it upfront for a better error message. > > Instead of: > $ virsh blockcopy vm hdc /tmp/raw.img --granularity 4096 --verbose --wait > error: Block Copy unexpectedly failed > > You will now get: > $ virsh blockcopy vm hdc /tmp/raw.img --granularity 4096 --verbose --wait > error: unsupported configuration: granularity can't be used with target volume format This can't avoid the cases that the source file has a raw format file as backing file.