backup: WIP: add a task for backing up /
backup: WIP: add a task for backing up /

(Already checked that borg preserves xattrs, ACLs, setuid, and even file
capabilities.)

grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks