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btrfs-progs: mkfs: Warn user for minimal RAID5/6 devices setup
authorQu Wenruo <quwenruo@cn.fujitsu.com>
Tue, 6 Sep 2016 15:35:06 +0000 (17:35 +0200)
committerDavid Sterba <dsterba@suse.com>
Wed, 21 Sep 2016 09:47:31 +0000 (11:47 +0200)
commit53c4e289c237e4f1008fdec54256e81c24c8882a
tree0fd4f494f50d58b141f762078a9fa520fd63378atree | snapshot
parentc2f3212502210427c5f17e66fbb30ad89826fbd7commit | diff
btrfs-progs: mkfs: Warn user for minimal RAID5/6 devices setup

For RAID5, 2 devices setup is just RAID1 with more overhead.
For RAID6, 3 devices setup is RAID1 with 3 copies, not what most user
want.

So warn user at mkfs time for such case, and add explain in man pages.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Documentation/mkfs.btrfs.asciidoc diff | blob | history
utils.c diff | blob | history
Domain: System / System Framework Device Management;