Anyone here with some input on what’s considered best practice in regards to the combo of Longhorn<>Velero .. in regards to cleaning up snapshots. • Our Velero is set to retain 5 backups … and CSI Snapshots is enabled ◦ Velero triggers Longhorn via the

VolumeSnapshotClass

• Longhorn backs up and is configured to integrate with MinIO to store the data … We’re seeing a lot of storage usage and after having read > https://longhorn.io/docs/1.3.1/volumes-and-nodes/volume-size/ I’m thinking about if it’ll be beneficial to configure a

snapshot recurring job

with a

retention of 1

in order to get these snapshots taking up storage space to reclaim disk space. As my thinking/understanding is that the data is stored on MinIO anyways and

Velero

tracks the data on MinIO and on restore will trigger

Longhorn

- again over

CSI

VolumeSnapshot

for restore … and the data will be fetched from

MinIO

. So the data in all these

snapshots

that one can see on the sub-volume page for a specific

Volume

can be reclaimed and we still have backup data in the case we need it for restore. Is this correctly understood? And thank you very much.

You mean create the snapshot with a retention of 1 and backup the data via Velero in case of recovery? If so, I think it would be helpful to clean up disk space by deleting snapshot.

A pvc backup is done by Velero triggering longhorn via the csi snapshot controller … We’ve not configured any retention in longhorn. As we’re trying to rely on the retention settings of longhorn. There’s already some issues around volume snapshots not being deleted by longhorn automatically on the longhorn GitHub repo — I hope that makes it clearer

I think we're working on enabling snapshots to be cleaned up periodically, which saves disk space occupied by volume snapshots. (Ref. https://github.com/longhorn/longhorn/issues/3836)

Yeah that’s right. I’ve seen that issue before and I’m tracking it. Nothing else to do then than set up a job that cleans up snapshots. Shouldn’t be a prob. If the snapshots are deleted as the backup data is still there externally - and longhorn do not need this volume snapshot data in the case of a restore right? When the backup system is external to Velero and data stored externally as well? Thanks

This item is scheduled to be released in v1.4.0 with a release date of December 29th.