This is the list of Frequently Asked Questions for restic.
When restic check
reports that there are pack files in the
repository that are not referenced in any index, that's (in contrast to
what restic reports at the moment) not a source for concern. The output
looks like this:
$ restic check Create exclusive lock for repository Load indexes Check all packs pack 819a9a52e4f51230afa89aefbf90df37fb70996337ae57e6f7a822959206a85e: not referenced in any index pack de299e69fb075354a3775b6b045d152387201f1cdc229c31d1caa34c3b340141: not referenced in any index Check snapshots, trees and blobs Fatal: repository contains errors
The message means that there is more data stored in the repo than
strictly necessary. With high probability this is duplicate data. In
order to clean it up, the command restic prune
can be used. The
cause of this bug is not yet known.