Error while trying to create a volume from a volume snapshot that sometimes result in snapshot loss

[winterhazel]

ISSUE TYPE

• Bug Report

COMPONENT NAME

KVM, Volume Snapshot

CLOUDSTACK VERSION

4.19.1.0

CONFIGURATION

OS / ENVIRONMENT

1 Zone, 1 Pod, 1 Cluster
Advanced networking
1 KVM host (Ubuntu 24.04)
1 Management Server (Ubuntu 24.04)
NFS primary storage

SUMMARY

Trying to create a volume from a volume snapshot results in an error that sometimes removes the snapshot.

STEPS TO REPRODUCE

When snapshot.backup.to.secondary is disabled, the following procedure sometimes results in an error at the last step:

1. Take volume snapshot A of VM X
2. Take volume snapshot B of VM X
3. Create a volume from snapshot A
4. Create a volume from snapshot B

When this happens, the second volume is not created, and sometimes volume snapshot B is removed from the primary storage.

EXPECTED RESULTS

Volume is created from volume snapshot

ACTUAL RESULTS

Volume is not created, and the snapshot is sometimes lost

[DaanHoogland]

@winterhazel as #9270 is still being discussed, I am marking this for 4.21 for now. cc @slavkap @JoaoJandre