Fun fact: I have a multi-TB, largely-write-only Postgres 9.4 database on a force-compress multi-device btrfs volume. Sadly, you must enable CoW to use transpare

Fun fact: I have a multi-TB, largely-write-only Postgres 9.4 database on a force-compress multi-device btrfs volume. Sadly, you must enable CoW to use transparent compression. The performance is... not the best, and not all of that can be blamed on either my shitty choice of indexes long ago, or my decision to use firewire to attach the devices. However, btrfs hasn't eaten any of my data, compression has given me ~2x the space to work with, and btrfs handled the sudden and unexpected loss of a device like a champ.