Hello all.

We use vprotect to make snapshot backups of our vm's.
This VM, let's call it OVIRTVM, has it's disks created as thin.
A full snapshot is created daily on sunday and the daily ones are incremental.

After the backup vprotect tries to delete the snapshot and almost always fails with the error:
"Failed to delete snapshot 'vProtect 2021-10-25 22:30:17.641654' for VM 'OVIRTVM'."

From engine.log can't get much more information:

2021-10-26 22:39:02,510+01 INFO  [org.ovirt.engine.core.sso.utils.AuthenticationUtils] (default task-511666) [] User admin@internal successfully logged in with scopes: ovirt-app-api ovirt-ext=token-info:authz-search ovirt-ext=token-info:public-authz-search ovirt-ext=token-info:validate ovirt-ext=token:password-access
2021-10-26 22:39:02,558+01 ERROR [org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand] (EE-ManagedThreadFactory-engineScheduled-Thread-15) [666e0f97-8b02-4b1e-80d4-2a640dd28d90] Ending command 'org.ovirt.engine.core.bll.snapshots.RemoveSnapshotCommand' with failure.
2021-10-26 22:39:02,595+01 INFO  [org.ovirt.engine.core.bll.aaa.CreateUserSessionCommand] (default task-511666) [1a9981] Running command: CreateUserSessionCommand internal: false.
2021-10-26 22:39:02,630+01 INFO  [org.ovirt.engine.core.sso.utils.AuthenticationUtils] (default task-511612) [] User admin@internal successfully logged in with scopes: ovirt-app-api ovirt-ext=token-info:authz-search ovirt-ext=token-info:public-authz-search ovirt-ext=token-info:validate ovirt-ext=token:password-access
2021-10-26 22:39:02,674+01 INFO  [org.ovirt.engine.core.sso.utils.AuthenticationUtils] (default task-511669) [] User admin@internal successfully logged in with scopes: ovirt-app-api ovirt-ext=token-info:authz-search ovirt-ext=token-info:public-authz-search ovirt-ext=token-info:validate ovirt-ext=token:password-access
2021-10-26 22:39:02,729+01 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedThreadFactory-engineScheduled-Thread-15) [666e0f97-8b02-4b1e-80d4-2a640dd28d90] EVENT_ID: USER_REMOVE_SNAPSHOT_FINISHED_FAILURE(357), Failed to delete snapshot 'vProtect 2021-10-25 22:30:17.641654' for VM 'OVIRTVM'.
2021-10-26 22:39:02,739+01 INFO  [org.ovirt.engine.core.bll.aaa.CreateUserSessionCommand] (default task-511675) [55891f0c] Running command: CreateUserSessionCommand internal: false.
2021-10-26 22:39:02,755+01 INFO  [org.ovirt.engine.core.bll.aaa.CreateUserSessionCommand] (default task-511660) [7895798d] Running command: CreateUserSessionCommand internal: false.

What else should I be looking for?

Thanks in advance!
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