- local _lv _vg _pv _dm
- for i in /dev/mapper/*; do
- [[ $i == /dev/mapper/control ]] && continue
- _lv=$(get_maj_min $i)
- _dm=/sys/dev/block/$_lv/dm
- [[ -f $_dm/uuid && $(<$_dm/uuid) =~ LVM-* ]] || continue
- if [[ $_lv = $2 ]]; then
- _vg=$(lvm lvs --noheadings -o vg_name $i 2>/dev/null)
- # strip space
- _vg="${_vg//[[:space:]]/}"
- if [[ $_vg ]]; then
- for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2>/dev/null)
- do
- check_block_and_slaves $1 $(get_maj_min $_pv) && return 0
- done
- fi
- fi
- done
+ local _lv _vg _pv _dm _majmin
+ _majmin="$2"
+ _lv="/dev/block/$_majmin"
+ _dm=/sys/dev/block/$_majmin/dm
+ [[ -f $_dm/uuid && $(<$_dm/uuid) =~ LVM-* ]] || return 1
+ _vg=$(dmsetup splitname --noheadings -o vg_name $(<"$_dm/name") )
+ # strip space
+ _vg="${_vg//[[:space:]]/}"
+ if [[ $_vg ]]; then
+ for _pv in $(lvm vgs --noheadings -o pv_name "$_vg" 2>/dev/null)
+ do
+ check_block_and_slaves $1 $(get_maj_min $_pv) && return 0
+ done
+ fi