[Question] ZFS snapshot is deleted along with the PVC

[Subetov]

What steps did you take and what happened:
I created a PCV, populated it with data, created a snapshot, then deleted the PCV, and it turned out that the snapshot also disappears from the host system and it can no longer be restored.
Although the resource "zfssnap" and "volumesnapshot" resources remain in kubernetes.

Is this expected behaviour?

What did you expect to happen:
I assumed that the snapshot will remain and I will be able to restore the data (create a new PVC from the snapshot)

Environment:

• ZFS-LocalPV version: 2.1.0
• Kubernetes version: v1.24.8

[sinhaashish]

hi @Subetov
I tried to replicate this isuue, but i was not able to do . Please reply with the steps you followed.
Steps : followed

1. Stopped the fio
2. Deleted the pvc
3. Checked the snapshot , it exist
   

[Subetov]

Hello @sinhaashish
Oh it was a long time ago, but as I remember snapshot was deleted from the host machine (not zfssnap k8s custom resource )
Checked with zfs list -t snapshot on the host machine.

[sinhaashish]

Hi @Subetov ,
Yes its the expected behaviour.
Upon deletion of PVC , the PV as well as snapshot gets deleted.
There is a PR which prevent volume deletion if snapshot exists . #350 . Its under review as of now.

[Subetov]

Thank you, @sinhaashish for the reply.
I saw that ticket, it's been waiting its turn for two years now. =)

[sinhaashish]

@Subetov , yes there were some other concerns and high priority jobs for us, but now we are actively looking on this repo.
Dont worry , your concern will be taken care.

[Subetov]

@sinhaashish, thank you a lot.

[avishnu]

Re-opening this for further investigation and fixing if needed.

[avishnu]

This seems important, prioritizing for v4.2