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Andreas Philipp authored
Raid5 with 3 devices is well defined while the old logic allowed raid5 only with a minimum of 4 devices when converting the block group profile via btrfs balance. Creating a raid5 with just three devices using mkfs.btrfs worked always as expected. This is now fixed and the whole logic is rewritten. Signed-off-by:
Andreas Philipp <philipp.andreas@gmail.com> Signed-off-by:
Josef Bacik <jbacik@fusionio.com>
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