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Diffstat (limited to 'rgmanager/src/resources/lvm.sh.in')
| -rw-r--r-- | rgmanager/src/resources/lvm.sh.in | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/rgmanager/src/resources/lvm.sh.in b/rgmanager/src/resources/lvm.sh.in new file mode 100644 index 0000000..a3a6c30 --- /dev/null +++ b/rgmanager/src/resources/lvm.sh.in @@ -0,0 +1,180 @@ +#!@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 |