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(parent: 578a4fc) | patch
btrfs: raid56: allow the exact minimum number of devices for balance convert
authorDavid Sterba <dsterba@suse.com>
Fri, 17 May 2019 09:43:15 +0000 (11:43 +0200)
committerDavid Sterba <dsterba@suse.com>
Mon, 1 Jul 2019 11:34:56 +0000 (13:34 +0200)
commitd79bec2b4e46b1dab723f59819508bfbdb3955e7
treeb527a81176c81bc017404bb27cf9232fedb9a02ftree | snapshot
parent578a4fc6d6a10e9675159b0b4c56e0aff56b7015commit | diff
btrfs: raid56: allow the exact minimum number of devices for balance convert

The minimum number of devices for RAID5 is 2, though this is only a bit
expensive RAID1, and for RAID6 it's 3, which is a triple copy that works
only 3 devices.

mkfs.btrfs allows that and mounting such filesystem also works, so the
conversion via balance filters is inconsistent with the others and we
should not prevent it.

Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/volumes.c diff | blob | history
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