QA output created by 200 setting device read-only mounting read-only block device: mount: block device SCRATCH_DEV is write-protected, mounting read-only touching file on read-only filesystem (should fail) touch: cannot touch `SCRATCH_MNT/foo': Read-only file system unmounting read-only filesystem setting device read-write mounting read-write block device: touch files going down: unmounting shutdown filesystem: setting device read-only mounting filesystem that needs recovery on a read-only device: mount: block device SCRATCH_DEV is write-protected, mounting read-only mount: cannot mount block device SCRATCH_DEV read-only unmounting read-only filesystem umount: SCRATCH_MNT: not mounted mounting filesystem with -o norecovery on a read-only device: mount: block device SCRATCH_DEV is write-protected, mounting read-only unmounting read-only filesystem setting device read-write mounting filesystem that needs recovery with -o ro: *** done