Why offline VM snapshot deletion(cold merge) is failing during "qemu-img check"
Issue
- Deleting a snapshot offline (cold merge) is failing with below error in the event log.
VDSM 10.74.x.x command HSMGetAllTasksStatusesVDS failed: cmd=['/usr/bin/qemu-img', 'check', '--output', 'json', '-f', 'qcow2', '/rhev/data-center/mnt/blockSD/8257cf14-d88d-4e4e-998c-9f8976dac2a2/images/7455de38-1df1-4acd-b07c-9dc2138aafb3/be4a4d85-d7e6-4725-b7f5-90c9d935c336'], ecode=3, stdout={
------
, stderr=Leaked cluster 109202 refcount=1 reference=0
Leaked cluster 109203 refcount=1 reference=0
Leaked cluster 109204 refcount=1 reference=0
- Unable to start the VM after the merge and it's failing with
Bad volume specificationerror.
Environment
- Red Hat Virtualization 4.1.
- Block storage domain.
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