Attic shouldn't be used anymore! [1] You should either switch to Borg, which is a not-backwards-compatible fork of Attic: https://borgbackup.readthedocs.io/en

Attic shouldn't be used anymore! [1] You should either switch to Borg, which is a not-backwards-compatible fork of Attic: https://borgbackup.readthedocs.io/en/stable/ https://borgbackup.readthedocs.io/en/stable/ Or you should switch to Obnam, which seems to have a cleaner implementation than Attic/Borg, and most importantly, a well-documented archive format: http://obnam.org/ http://obnam.org/ Note that both have an archive format which is incompatible to Attic. Also note that some years ago Obnam had poor performance compared to Attic, but as far as I know, it became much faster since then. [1] A serious bug which may cause data-loss has never been fixed, so Attic was removed from some distros such as Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=802619 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=802619