Yes, and btrfs's raid1 isn't a mirror. Btrfs's raid1c3 and raid1c4 are its alter... | Hacker News

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accelbred on July 23, 2020 | parent | context | favorite | on: In Praise of ZFS on Linux's ZED 'ZFS Event Daemon'

Yes, and btrfs's raid1 isn't a mirror. Btrfs's raid1c3 and raid1c4 are its alternative to raid5/6 without the write hole.

trasz on July 24, 2020 [–]

No, it's still a mirror, just spread over more than two devices. Size overhead is still that of a mirror, ie quite a bit higher than that of raidz.

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