How to delete backups from old plan?

[modem]

During my tests, I created 2 plans to backup to the same repository. I then deleted one of the plans, but the repository still shows the old backup.
Is there a way to remove that data without deleting the repository? I see no option for this in the interface...

[garethgeorge]

You're right that backrest will retain these forever so long as the snapshots are retained in your repo (and with the plan deleted backrest is no longer managing forgets / prunes for snapshots created by that plan).

If you go ahead and delete those snapshots with the restic cli, backrest will pick this up after the next backup and will garbage collect the associated UI entries.

I can see the argument for this being a UI capability, but I'd like to hold off on adding it for now. With the exception of managed forget operations (which restic ensures will always keep at least one copy of your data) backrest today executes very few destructive operations on your behalf and that's an important part of ensuring it's safe for your data.

[garethgeorge]

use restic forget --keep-last 1 --tag plan:yourplanID to forget all but the most recent snapshot in that set, then find the snapshot ID of the last remaining snapshot and run restic forget <snapshotID> to finish cleanup.

[modem]

I can't run this on the official backrest container... We need shell support.

[garethgeorge]

#72 adds a button for manually forgetting individual snapshots.