On 2016-10-11 11:14, Philip Louis Moetteli wrote:
Hello,
I have to build a RAID 6 with the following 3 requirements:
• Use different kinds of disks with different sizes.
• When a disk fails and there's enough space, the RAID should be able to reconstruct itself out of the degraded state. Meaning, if I have e. g. a RAID with 8 disks and 1 fails, I should be able to chose to transform this in a non-degraded (!) RAID with 7 disks.
• Also the other way round: If I add a disk of what size ever, it should redistribute the data, so that it becomes a RAID with 9 disks.
I don’t care, if I have to do it manually.
I don’t care so much about speed either.
Is BTrFS capable of doing that?
In theory yes. In practice, BTRFS RAID5/6 mode should not be used in
production due to a number of known serious issues relating to
rebuilding and reshaping arrays.
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