kvm virtio-blk device, for example /dev/vdb, doesn't have serial id by default. So there's no persistent device node under /dev/disk/ for /dev/vdb. In case no persistent dev for dump target, we should use the original device name directly, not failing the mkdumprd. v2: update warn message from Vivek. Signed-off-by: WANG Chao <chaowang@redhat.com> Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Acked-by: Vivek Goyal <vgoyal@redhat.com>
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