ok - so I got following: ... ++ devname=system-root ++ dmsetup -v --noudevsync remove system-root Command failed ++ return 1 ++ ret=1 ++ 'xfinal '!=' x ']' ++ info 'dmsetup ls --tree' ++ check_quiet ++ '[' -z yes ']' ++ echo '<30>dracut: dmsetup ls --tree' ++ dmsetup ls --tree ++ vinfo ++ read line ++ info system-root '(254:1)' ++ check_quiet ...