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accepted Resilience of Btrfs inside RAID5
Apr
28
comment Resilience of Btrfs inside RAID5
That was my initial thought too, but RAID5 will also compensate for bad blocks not just bad disks, and if an area is unclean area because of a power-off during a write, it should be restored during recovery. From the wiki: "When you have multiple copies of data, you can use data scrubbing to actively scan for corrupt data and clean up the corruption by replacing the corrupt data with correct data from a surviving copy." The question is how this recovery would interact with the filesystem journaling and the kind of corruption that could occur.
Apr
28
asked Resilience of Btrfs inside RAID5