Man manual need to be updated since RAID5/6 has been supported
by btrfs-replace.
Signed-off-by: Wang Yanfeng <wangyf-fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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*btrfs replace* is used to replace btrfs managed devices with other device.
-NOTE: this is not currently supported for RAID5/6 profiles and must use the
-device add/delete workaround.
-It is recommended to see `btrfs-device`(8) for more details about btrfs device
-management.
-
SUBCOMMAND
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*cancel* <mount_point>::