Attachment 152701 Details for Bug 236580 – lvm.sh script with bad device exclusion

lvm.sh script with bad device exclusion

lvm.sh (text/plain), 10.84 KB, created by Jonathan Earl Brassow on 2007-04-16 15:35:49 UTC

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Creator: Jonathan Earl Brassow

Created: 2007-04-16 15:35:49 UTC

Size: 10.84 KB

patch

obsolete

>#!/bin/bash
>
>#
>#  Copyright Red Hat Inc., 2007
>#
>#  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, 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; see the file COPYING.  If not, write to the
>#  Free Software Foundation, Inc.,  675 Mass Ave, Cambridge, 
>#  MA 02139, USA.
>#
>
>#
># LVM Failover Script.
>#
># This script correctly handles:
>#  - Relocation
>#  - Fail-over
>#  - Disk failure + Fail-over
># If you don't know what those mean, ASK!  (jbrassow@redhat.com)
># NOTE: Changes to /etc/lvm/lvm.conf are required for proper operation.
>#
># This script should handle (but doesn't right now):
>#  - Operations on VG level.  Make lv_name optional.  This would have
>#    the effect of moving all LVs in a VG, not just one LV
>
>
>
>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
>
>rv=0
>
>meta_data()
>{
>	cat <<EOT
><?xml version="1.0" ?>
><resource-agent name="lvm" version="rgmanager 2.0">
>    <version>1.0</version>
>
>    <longdesc lang="en">
>	This defines a LVM volume group that is ...
>    </longdesc>
>
>    <shortdesc lang="en">
>	LVM Failover script
>    </shortdesc>
>
>    <parameters>
>        <parameter name="name" primary="1">
>            <longdesc lang="en">
>                Descriptive name LVM Volume group
>            </longdesc>
>            <shortdesc lang="en">
>                Name
>            </shortdesc>
>	    <content type="string"/>
>        </parameter>
>
>        <parameter name="vg_name" required="1">
>            <longdesc lang="en">
>                If you can see this, your GUI is broken.
>            </longdesc>
>            <shortdesc lang="en">
>                If you can see this, your GUI is broken.
>            </shortdesc>
>	    <content type="string"/>
>        </parameter>
>
>        <parameter name="lv_name" required="1">
>            <longdesc lang="en">
>                If you can see this, your GUI is broken.
>            </longdesc>
>            <shortdesc lang="en">
>                If you can see this, your GUI is broken.
>            </shortdesc>
>	    <content type="string"/>
>        </parameter>
>
>	<parameter name="nfslock" inherit="service%nfslock">
>	    <longdesc lang="en">
>	        If set and unmounting the file system fails, the node will
>		try to kill lockd and issue reclaims across all remaining
>		network interface cards.
>	    </longdesc>
>	    <shortdesc lang="en">
>	        Enable NFS lock workarounds
>	    </shortdesc>
>	    <content type="boolean"/>
>	</parameter>
>
>    </parameters>
>
>    <actions>
>        <action name="start" timeout="5"/>
>	<action name="stop" timeout="5"/>
>
>	<action name="status" timeout="5" interval="1h"/>
>	<action name="monitor" timeout="5" interval="1h"/>
>
>	<action name="meta-data" timeout="5"/>
>	<action name="verify-all" timeout="30"/>
>    </actions>
>
>    <special tag="rgmanager">
>    	<attributes maxinstances="1"/>
>    </special>
>
></resource-agent>
>EOT
>}
>
># verify_all
>#
># Verify the parameters passed in
>#
>verify_all()
>{
>	declare lv_path="$OCF_RESKEY_vg_name/$OCF_RESKEY_lv_name"
>	declare -i ret=0
>
>	# Anything to verify?  Perhaps the names?
>	ocf_log notice "Verifying $lv_path"
>
>	return $ret
>}
>
>vg_status()
>{
>	return $OCF_ERR_GENERIC
>}
>
>vg_activate()
>{
>	return $OCF_ERR_GENERIC
>}
>
># lv_status
>#
># Is the LV active?
>lv_status()
>{
>	declare lv_path="$OCF_RESKEY_vg_name/$OCF_RESKEY_lv_name"
>	declare dev="/dev/$lv_path"
>	declare realdev
>	declare owner
>	declare my_name
>
>	#
>	# Check if device is active
>	#
>	if [[ ! $(lvs -o attr --noheadings $lv_path) =~ ....a. ]]; then
>	    return $OCF_ERR_GENERIC
>	fi
>
>	#
>	# Check if all links/device nodes are present
>	#
>        if [ -h "$dev" ]; then
>		realdev=$(readlink -f $dev)
>		if [ $? -ne 0 ]; then
>			ocf_log err "Failed to follow link, $dev"
>			return $OCF_ERR_ARGS
>		fi
>
>		if [ ! -b $realdev ]; then
>			ocf_log err "Device node for $lv_path is not present"
>			return $OCF_ERR_GENERIC
>		fi
>	else
>	        ocf_log err "Symbolic link for $lv_path is not present"
>		return $OCF_ERR_GENERIC
>	fi
>
>	#
>	# Verify that we are the correct owner
>	#
>	owner=`lvs -o tags --noheadings $lv_path`
>	my_name=$(local_node_name)
>	if [ -z $my_name ]; then
>		ocf_log err "Unable to determine local machine name"
>
>		# FIXME: I don't really want to fail on 1st offense
>		return $OCF_SUCCESS
>	fi
>
>	if [ -z $owner ] || [ $my_name != $owner ]; then
>		ocf_log err "WARNING: $lv_path should not be active"
>		ocf_log err "WARNING: $my_name does not own $lv_path"
>		ocf_log err "WARNING: Attempting shutdown of $lv_path"
>
>		lvchange -an $lv_path
>		return $OCF_ERR_GENERIC
>	fi
>
>	return $OCF_SUCCESS
>}
>
># lv_activate_resilient
>#
># Sometimes, devices can come back.  Their metadata will conflict
># with the good devices that remain.  We must filter out those
># failed devices when trying to reactivate
>lv_activate_resilient()
>{
>	declare action=$1
>	declare lv_path=$2
>	declare all_pvs
>	declare command=""
>
>	if [ -z $action ] || [ -z $lv_path ]; then
>		ocf_log_err "lv_activate_resilient: Arguments not supplied"
>		return $OCF_ERR_ARGS
>	fi
>
>	# pvs will print out only those devices that are valid
>	# If a device dies and comes back, it will not appear
>	# in pvs output (but you will get a Warning).
>	all_pvs=(`pvs --noheadings -o pv_name | grep -v Warning`)
>
>	# Now we use those valid devices in a filter which we set up.
>	# The device will then be activated because there are no
>	# metadata conflicts.
>	if [ $action == "start" ]; then
>	        command="lvchange -ay $lv_path --config devices{filter=[";
>	else
>		command="lvchange -an $lv_path --config devices{filter=[";
>	fi
>	for i in ${all_pvs[*]}; do
>		command=$command'"a|'$i'|",'
>	done
>	command=$command"\"r|.*|\"]}"
>
>	if ! $command ; then
>		ocf_log_err "lv_activate_resilient $action failed on $lv_path"
>		return $OCF_ERR_GENERIC
>	else
>		return $OCF_SUCCESS
>	fi
>}
>
># lv_activate_and_tag
>lv_activate_and_tag()
>{
>	declare action=$1
>	declare tag=$2
>	declare lv_path=$3
>
>	if [ -z $action ] || [ -z $tag ] || [ -z $lv_path ]; then
>		ocf_log err "Supplied args: 1) $action, 2) $tag, 3) $lv_path"
>		return $OCF_ERR_ARGS
>	fi
>
>	if [ $action == "start" ]; then
>		ocf_log notice "Activating $lv_path"
>		lvchange --addtag $tag $lv_path
>		if [ $? -ne 0 ]; then
>			ocf_log err "Unable to add tag to $lv_path"
>			return $OCF_ERR_GENERIC
>		fi
>
>		if ! lv_activate_resilient $action $lv_path; then
>			ocf_log err "Unable to activate $lv_path"
>			return $OCF_ERR_GENERIC
>		fi
>	else
>		ocf_log notice "Deactivating $lv_path"
>		if ! lv_activate_resilient $action $lv_path; then
>			ocf_log err "Unable to deactivate $lv_path"
>			return $OCF_ERR_GENERIC
>		fi
>
>		ocf_log notice "Removing ownership tag ($tag) from $lv_path"
>
>		lvchange --deltag $tag $lv_path
>		if [ $? -ne 0 ]; then
>			ocf_log err "Unable to delete tag from $lv_path"
>			return $OCF_ERR_GENERIC
>		fi
>	fi
>
>	return $OCF_SUCCESS
>}
>
># lv_activate
># $1: start/stop only
>#
># Basically, if we want to [de]activate an LVM volume,
># we must own it.  That means that our tag must be on it.
># This requires a change to /etc/lvm/lvm.conf:
>#	volume_list = [ "root_volume", "@my_hostname" ]
># where "root_volume" is your root volume group and
># "my_hostname" is $(local_node_name)
>#
># If there is a node failure, we may wish to "steal" the
># LV.  For that, we need to check if the node that owns
># it is still part of the cluster.  We use the tag to
># determine who owns the volume then query for their
># liveness.  If they are dead, we can steal.
>lv_activate()
>{
>	declare lv_path="$OCF_RESKEY_vg_name/$OCF_RESKEY_lv_name"
>	declare owner=`lvs -o tags --noheadings $lv_path`
>	declare my_name=$(local_node_name)
>
>	if [ -z $my_name ]; then
>		ocf_log err "Unable to determine cluster node name"
>		return $OCF_ERR_GENERIC
>	fi
>
>	#
>	# FIXME: This code block is repeated below... might be
>	# nice to put it in a function
>	#
>	if [ ! -z $owner ] && [ $owner != $my_name ]; then
>		if is_node_member_clustat $owner ; then
>			ocf_log err "$owner owns $lv_path unable to $1"
>			return $OCF_ERR_GENERIC
>		fi
>		ocf_log notice "Owner of $lv_path is not in the cluster"
>		ocf_log notice "Stealing $lv_path"
>
>		lvchange --deltag $owner $lv_path
>		if [ $? -ne 0 ]; then
>			ocf_log err "Failed to steal $lv_path from $owner"
>			return $OCF_ERR_GENERIC
>		fi
>
>		# Warning --deltag doesn't always result in failure
>		if [ ! -z `lvs -o tags --noheadings $lv_path` ]; then
>			ocf_log err "Failed to steal $lv_path from $owner."
>			return $OCF_ERR_GENERIC
>		fi
>	fi
>
>	if ! lv_activate_and_tag $1 $my_name $lv_path; then
>		ocf_log err "Failed to $1 $lv_path"
>
>		if [ "$1" == "start" ]; then
>			ocf_log notice "Attempting cleanup of $OCF_RESKEY_vg_name"
>
>			if vgreduce --removemissing --config \
>			    "activation { volume_list = \"$OCF_RESKEY_vg_name\" }" \
>			    $OCF_RESKEY_vg_name; then
>				ocf_log notice "$OCF_RESKEY_vg_name now consistent"
>				owner=`lvs -o tags --noheadings $lv_path`
>				if [ ! -z $owner ] && [ $owner != $my_name ]; then
>					if is_node_member_clustat $owner ; then
>						ocf_log err "$owner owns $lv_path unable to $1"
>						return $OCF_ERR_GENERIC
>					fi
>					ocf_log notice "Owner of $lv_path is not in the cluster"
>					ocf_log notice "Stealing $lv_path"
>
>					lvchange --deltag $owner $lv_path
>					if [ $? -ne 0 ]; then
>						ocf_log err "Failed to steal $lv_path from $owner"
>						return $OCF_ERR_GENERIC
>					fi
>
>					# Warning --deltag doesn't always result in failure
>					if [ ! -z `lvs -o tags --noheadings $lv_path` ]; then
>						ocf_log err "Failed to steal $lv_path from $owner."
>						return $OCF_ERR_GENERIC
>					fi
>				fi
>
>				if ! lv_activate_and_tag $1 $my_name $lv_path; then
>					ocf_log err "Failed second attempt to $1 $lv_path"
>					return $OCF_ERR_GENERIC
>				else
>					ocf_log notice "Second attempt to $1 $lv_path successful"
>					return $OCF_SUCCESS
>				fi
>			else
>				ocf_log err "Failed to make $OCF_RESKEY_vg_name consistent"
>				return $OCF_ERR_GENERIC
>			fi
>		else
>			ocf_log err "Failed to $1 $lv_path"
>			return $OCF_ERR_GENERIC
>		fi
>	fi
>	return $OCF_SUCCESS
>}
>
>case $1 in
>start)
>	if [ -z $OCF_RESKEY_lv_name ]; then
>		vg_activate start || exit 1
>	else
>		lv_activate start || exit 1
>	fi
>	rv=0
>	;;
>
>status|monitor)
>	if [ -z $OCF_RESKEY_lv_name ]; then
>		vg_status || exit 1
>	else
>		lv_status || exit 1
>	fi
>	rv=0
>	;;
>		    
>stop)
>	if [ -z $OCF_RESKEY_lv_name ]; then
>		vg_activate stop || exit 1
>	else
>		lv_activate stop || exit 1
>	fi
>	rv=0
>	;;
>
>recover|restart)
>	$0 stop || exit $OCF_ERR_GENERIC
>	$0 start || exit $OCF_ERR_GENERIC
>	rv=0
>	;;
>
>meta-data)
>	meta_data
>	rv=0
>	;;
>
>verify-all)
>	verify_all
>	rv=$?
>	;;
>*)
>	echo "usage: $0 {start|status|monitor|stop|restart|meta-data|verify-all}"
>	exit $OCF_ERR_GENERIC
>	;;
>esac
>
>exit $rv

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Attachments on bug 236580: 152701