Is it possible to ensure that at least one snapshot is kept from each individual host, or tag? I have several machines backing up to the same repository and although it’s unlikely any given machine will not back up for long enough to trigger a pruning of ALL of its data, it’s theoretically possible. Just wondering. Thanks!
restic forget with policy-based keep flags will refuse to delete all snapshots in a single group. How snapshots are grouped is controlled by the
--group-by flag. So, e.g.,
--group-by host will refuse to delete all snapshots of any particular host.
Ahhh okay, thanks a lot!
I just found that in the documentation. It says:
forgetis run with a policy, restic loads the list of all snapshots, then groups these by host name and list of directories. The grouping options can be set with
--group-by, to only group snapshots by paths and tags use
--group-by paths,tags. The policy is then applied to each group of snapshots separately. This is a safety feature.
Does that mean it groups by host by default and I don’t need to specify anything if that’s what I want to happen?
restic help forget documents the default:
-g, --group-by string string for grouping snapshots by host,paths,tags (default "host,paths")