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A comment on In Praise of ZFS on Linux's ZED 'ZFS Event Daemon'. Parent comment

Re:In Praise of ZFS on Linux's ZED 'ZFS Event Daemon' by trasz on Monday July 20, 2020 @08:19PM (#23903226)
Not really - RAIDZ is basically RAID5 without the write hole problem. ZFS equivalent to RAID1 is called 'mirror', and is... well, a mirror.
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Re:In Praise of ZFS on Linux's ZED 'ZFS Event Daemon' by accelbred on Thursday July 23, 2020 @02:28AM (#23924719)
Yes, and btrfs's raid1 isn't a mirror. Btrfs's raid1c3 and raid1c4 are its alternative to raid5/6 without the write hole.
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Re:In Praise of ZFS on Linux's ZED 'ZFS Event Daemon' by trasz on Friday July 24, 2020 @06:02PM (#23944947)
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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