Why am I not able to create a VM from the template image in OpenShift Virtualization after the snapshot count of the Ceph volume has crossed 450?

Solution Verified - Updated -

Issue

  • The user is unable to create a new VM from the golden image after creating 450+ VMs from the template.
  • The snapshot count of the underlying Ceph volume of the template image crossed 450:
# rbd info  csi-vol-577fa68a-4b37-479a-bf58-023a320af82c  --pool mypool
rbd image 'csi-vol-577fa68a-4b37-479a-bf58-023a320af82c':
    size 30 GiB in 7680 objects
    order 22 (4 MiB objects)
    snapshot_count: 454                 <===
  • The ceph rbd client is logging below message:
I0815 15:11:45.211253       1 controllerserver.go:536] ID: 3701 Req-ID: snapshot-ecd44693-7d3c-4021-aa39-502857abce2a snapshots count 454 on image: mypool/csi-vol-577fa68a-4b37-479a-bf58-023a320af82c reached configured hard limit 450

Environment

  • OpenShift Virtualization 4.10.
  • OpenShift Virtualization 4.11.
  • OpenShift Virtualization 4.12.
  • OpenShift Virtualization 4.13.

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