modules.d/90dm/dm-shutdown.sh

   1 #!/bin/sh
   2
   3 _remove_dm() {
   4     local dev=$1
   5     local s
   6     local devname
   7
   8     for s in /sys/block/${dev}/holders/dm-* ; do
   9         [ -e ${s} ] || continue
  10         _remove_dm ${s##*/}
  11     done
  12     devname=$(cat /sys/block/${dev}/dm/name)
  13     dmsetup -v --noudevsync remove "$devname" || return $?
  14     return 0
  15 }
  16
  17 _do_dm_shutdown() {
  18     local ret=0
  19     local final=$1
  20     local dev
  21
  22     info "Disassembling device-mapper devices"
  23     for dev in /sys/block/dm-* ; do
  24         [ -e ${dev} ] || continue
  25         _remove_dm ${dev##*/} || ret=$?
  26     done
  27     if [ "x$final" != "x" ]; then
  28         info "dmsetup ls --tree"
  29         dmsetup ls --tree 2>&1 | vinfo
  30     fi
  31     return $ret
  32 }
  33
  34 if command -v dmsetup >/dev/null &&
  35     [ "x$(dmsetup status)" != "xNo devices found" ]; then
  36     _do_dm_shutdown $1
  37 else
  38     :
  39 fi