RHV: Live Merge failed with "unable to find backing name for device"
Issue
- A Live Merge (snapshot deletion) failed with VDSM reporting;
libvirtError: internal error: unable to find backing name for device drive-ua-0e7c3c18-5e1e-4e8d-a663-3b4009b19765
Environment
- Red Hat Virtualization (RHV) 4.3
- Red Hat Enterprise Linux (RHEL) 7.6 host;
libvirt-4.5.0-10.el7_6.12.x86_64
qemu-kvm-rhev-2.12.0-18.el7_6.5.x86_64
vdsm-4.30.17-1.el7ev.x86_64
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