``` $ run0 dmsetup create ioerr --table "0 8 error" $ run0 chmod 777 /dev/mapper/ioerr $ uu-md5sum --check /dev/mapper/ioerr md5sum: /dev/mapper/ioerr: no properly formatted checksum lines found $ gnu9.9.g9200747f6/md5sum --check /dev/mapper/ioerr md5sum: /dev/mapper/ioerr: read error ```
