We're using a backups server to back up all machines in a LAN. Four 2TB
disks are assembled in a BTRFS RAID array and mounted as /media/backups.
Under this are subvolumes droog, hex, etc, and snapshots
droog_snap-{date1}, hex_snap-{date1}, etc.
Goal is to encrypt backups, but the concern is with snapshots. Won't
piping rsync through encryption with GPG or somesuch, play havoc with
BTRFS snapshot accounting?
Is there any way to encrypt an array so it is inaccesible while
umounted?
I've already asked on the ecryptfs listserv and it resulted in mass
confusion.
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