I am quite worried about losing information and not being able to recover it from the backups, so I am trying to nail the best automated way to make sure the backups are good.
Restic comes with a check command, that according to the documentation here has this two “levels”:
- Structural consistency and integrity, e.g. snapshots, trees and pack files (default)
- Integrity of the actual data that you backed up
In plain words, I understand this as: The data you uploaded to the repository is still that data.
Now my question is, do you think this is enough to trust the backups are right?
I was thinking about restoring the backup in a temporary location and running diff on random files to check the files match the source, but I don’t know if this is redundant now.
How do you make sure you can trust your backups?
I use Borg but every now and then I mount a backup and download a few files to make sure they work correctly.
I’ve so far only had to do this for real with my local zfs snapshots after messing up a config file or blowing away the wrong folder. Process to restore is essentially the same except I would mount the Borg repo instead of a local zfs snapshot