#!/bin/sh

#

# Do not run this script manually. This script is called by udev on a gfs2

# withdraw uevent and is used to complete the withdraw action and notify the

# kernel.

#

# Sanity checks

if [ "$SUBSYSTEM" != "gfs2" ] || [ "$LOCKPROTO" != "lock_dlm" ] ||

       [ -z "$DEVPATH" ] || [ "$ACTION" != "offline" ]

then

    exit 1 # Nothing to do here

fi

# Try and suspend the device

SYSFS_TOPDIR="/sys"$DEVPATH

DM_NAME=$(cat "$SYSFS_TOPDIR/device/dm/name")

DM_DEV="/dev/mapper/"$DM_NAME

if [ -z "$DM_DEV" ]

then

    /usr/bin/dmsetup suspend $DM_DEV

fi

# Signal completion of withdraw

WD_ACK="$SYSFS_TOPDIR/lock_module/withdraw"

if [ -f "$WD_ACK" ]

then

    echo "1" > $WD_ACK

fi