Hello! I am trying to create snapshots for sheepdog disks using libvirt API or virsh. The disk is defined in domain as follows:
<disk type='network' device='disk'> <driver name='qemu' cache='none'/> <source protocol='sheepdog' name='sheepvol1'/> <target dev='vdb' bus='virtio'/> </disk> I have tried both options "external" and "internal". If I try to create external snapshot with virsh command: snapshot-create-as vps vpssnap --disk-only --diskspec vda,snapshot=no --diskspec vdb,snapshot=external I get an error: source for disk 'vdb' is not a regular file; refusing to generate external snapshot name. If I try the same command but with "internal" mode: snapshot-create-as vps vpssnap --disk-only --diskspec vda,snapshot=no --diskspec vdb,snapshot=internal virsh creates a snapshot, but this snapshot is useless. If i try to revert to this snapshot i get an error: "qemu-img: Could not open 'sheepvol1': No such file or directory", plus if I list all VDIs with "collie vdi list" I do not see any snapshots there. So i guess virsh does not create an appropriate sheepdog snapshot at all. Can someone please tell me how to create snapshots for sheepdog disks? Thank you.
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