On 12/30/17 14:38, Matthew Crews wrote:
The main issue I see with using BTRFS with MDADM is that you lose the benefit of bit-rot repair. MDADM can't correct bit rot, but BTRFS-Raid (and ZFS raid arrays) can, but only with native raid configurations.
AFAIK:1. mdadm RAID1 can fix bit rot, so long as one drive has a good block to fix the others.
2. btrfs on top of mdadm RAID1 will not see the bit rot that mdadm RAID1 fixes.
David