#!/bin/sh _remove_dm() { local dev=$1 local s local devname for s in /sys/block/${dev}/holders/dm-* ; do [ -e ${s} ] || continue _remove_dm ${s##*/} done # multipath devices might have MD devices on top, # which are removed after this script. So do not # remove those to avoid spurious errors case $(cat /sys/block/${dev}/dm/uuid) in mpath-*) return 0 ;; *) devname=$(cat /sys/block/${dev}/dm/name) dmsetup -v --noudevsync remove "$devname" || return $? ;; esac return 0 } _do_dm_shutdown() { local ret=0 local final=$1 local dev info "Disassembling device-mapper devices" for dev in /sys/block/dm-* ; do [ -e ${dev} ] || continue if [ "x$final" != "x" ]; then _remove_dm ${dev##*/} || ret=$? else _remove_dm ${dev##*/} >/dev/null 2>&1 || ret=$? fi done if [ "x$final" != "x" ]; then info "dmsetup ls --tree" dmsetup ls --tree 2>&1 | vinfo fi return $ret } if command -v dmsetup >/dev/null && [ "x$(dmsetup status)" != "xNo devices found" ]; then _do_dm_shutdown $1 else : fi