On Sat, Apr 04 2020, Zygo Blaxell wrote: > mdadm does one thing very well, but only the one thing. I don't imagine > Neil would extend mdadm to the point where it can handle handle silent You are correct, I wouldn't. md provides a block devices, btrfs provides a filesystem. They are totally different things. Saying that btrfs/RAID6 is "better" than mdadm/raid6 is like saying the ext4 is "better" than a SCSI drive. It doesn't really mean anything. I could argue that calling what btrfs does "RAID6" is misleading and possibly the cause of confusion. I think the decision to call what ZFS does "RAID-Z" was probably a good idea - it is somewhat like RAID, but on a whole new level. Maybe the stuff btrfs does could be RAID-B :-) NeilBrown
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