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#!@BASH_SHELL@
#
# LVM Failover Script.
# NOTE: Changes to /etc/lvm/lvm.conf are required for proper operation.
#
# Copyright (C) 1997-2003 Sistina Software, Inc. All rights reserved.
# Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
LC_ALL=C
LANG=C
PATH=/bin:/sbin:/usr/bin:/usr/sbin
export LC_ALL LANG PATH
. $(dirname $0)/ocf-shellfuncs
. $(dirname $0)/utils/member_util.sh
. $(dirname $0)/lvm_by_lv.sh
. $(dirname $0)/lvm_by_vg.sh
rv=0
################################################################################
# ha_lvm_proper_setup_check
#
################################################################################
function ha_lvm_proper_setup_check
{
##
# Does the Volume Group exist?
# 1) User may have forgotten to create it
# 2) User may have misspelled it in the config file
##
if ! vgs $OCF_RESKEY_vg_name --config 'global{locking_type=0}'>& /dev/null; then
ocf_log err "HA LVM: Unable to get volume group attributes for $OCF_RESKEY_vg_name"
return $OCF_ERR_GENERIC
fi
##
# Are we using the "tagging" or "CLVM" variant?
# The CLVM variant will have the cluster attribute set
##
if [[ "$(vgs -o attr --noheadings --config 'global{locking_type=0}' $OCF_RESKEY_vg_name 2>/dev/null)" =~ .....c ]]; then
# Is clvmd running?
if ! ps -C clvmd >& /dev/null; then
ocf_log err "HA LVM: $OCF_RESKEY_vg_name has the cluster attribute set, but 'clvmd' is not running"
return $OCF_ERR_GENERIC
fi
return $OCF_SUCCESS
fi
##
# The "tagging" variant is being used if we have gotten this far.
##
##
# The default for lvm.conf:activation/volume_list is empty,
# this must be changed for HA LVM.
##
if ! lvm dumpconfig activation/volume_list >& /dev/null; then
ocf_log err "HA LVM: Improper setup detected"
ocf_log err "* \"volume_list\" not specified in lvm.conf."
return $OCF_ERR_GENERIC
fi
##
# Machine's cluster node name must be present as
# a tag in lvm.conf:activation/volume_list
##
if ! lvm dumpconfig activation/volume_list | grep $(local_node_name); then
ocf_log err "HA LVM: Improper setup detected"
ocf_log err "* @$(local_node_name) missing from \"volume_list\" in lvm.conf"
return $OCF_ERR_GENERIC
fi
##
# The volume group to be failed over must NOT be in
# lvm.conf:activation/volume_list; otherwise, machines
# will be able to activate the VG regardless of the tags
##
if lvm dumpconfig activation/volume_list | grep "\"$OCF_RESKEY_vg_name\""; then
ocf_log err "HA LVM: Improper setup detected"
ocf_log err "* $OCF_RESKEY_vg_name found in \"volume_list\" in lvm.conf"
return $OCF_ERR_GENERIC
fi
##
# Next, we need to ensure that their initrd has been updated
# If not, the machine could boot and activate the VG outside
# the control of rgmanager
##
# Fixme: we might be able to perform a better check...
if [ "$(find /boot -name *.img -newer /etc/lvm/lvm.conf)" == "" ]; then
ocf_log err "HA LVM: Improper setup detected"
ocf_log err "* initrd image needs to be newer than lvm.conf"
# While dangerous if not done the first time, there are many
# cases where we don't simply want to fail here. Instead,
# keep warning until the user remakes the initrd - or has
# it done for them by upgrading the kernel.
#return $OCF_ERR_GENERIC
fi
return $OCF_SUCCESS
}
################################################################################
# MAIN
################################################################################
case $1 in
start)
ha_lvm_proper_setup_check || exit 1
if [ -z "$OCF_RESKEY_lv_name" ]; then
vg_start || exit 1
else
lv_start || exit 1
fi
;;
status|monitor)
ocf_log notice "Getting status"
if [ -z "$OCF_RESKEY_lv_name" ]; then
vg_status
exit $?
else
lv_status
exit $?
fi
;;
stop)
ha_lvm_proper_setup_check
if [ -z "$OCF_RESKEY_lv_name" ]; then
vg_stop || exit 1
else
lv_stop || exit 1
fi
;;
recover|restart)
$0 stop || exit $OCF_ERR_GENERIC
$0 start || exit $OCF_ERR_GENERIC
;;
meta-data)
cat `echo $0 | sed 's/^\(.*\)\.sh$/\1.metadata/'`
;;
validate-all|verify-all)
if [ -z "$OCF_RESKEY_lv_name" ]; then
vg_verify || exit 1
else
lv_verify || exit 1
fi
;;
*)
echo "usage: $0 {start|status|monitor|stop|restart|meta-data|validate-all}"
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
exit $rv

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