QA output created by 011
*** test btrfs replace
ERROR: unable to start device replace, another exclusive operation 'device replace' in progress
btrfs replace status (canceled) failed
failed: '/usr/local/bin/btrfs scrub start -B /mnt/scratch'
(see /xfstests-dev/results//btrfs_normal_noholes/btrfs/011.full for details)