system: Linux mars.sprixweb.com 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64

cmd: 

#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
_do_dm_shutdown() {
    local ret
    local final=$1
    info "Disassembling device-mapper devices"
    dmsetup -v remove_all
    ret=$?
    if [ "x$final" != "x" ]; then
        info "dmsetup ls --tree"
        dmsetup ls --tree 2>&1 | vinfo
    fi
    return $ret
}

if command -v dmsetup >/dev/null; then
    _do_dm_shutdown $1
else
    :
fi