QA output created by 361
umount: /mnt/scratch: target is busy.
failed to unmount /dev/mapper/vg0-lv7
umount: bad usage
Try 'umount --help' for more information.
losetup: option requires an argument -- 'd'
Try 'losetup --help' for more information.
Cannot destroy loop device 
(see /xfstests-dev/results//btrfs_normal_freespacetree/generic/361.full for details)