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+#!/bin/sh
+#
+#
+# ServeRAID
+#
+# Description: Enables/Disables shared ServeRAID merge groups
+#
+# Author: Alan Robertson, Renzo Alejandro Granados
+#
+# Support: users@clusterlabs.org
+#
+# License: GNU General Public License (GPL)
+#
+# Copyright: (C) 2002-2005 International Business Machines
+# (C) 2002 Renzo Alejandro Granados
+#
+# usage: ./ServeRAID (start|stop|status|monitor|validate-all|meta-data)
+#
+# OCF parameters are as below:
+# OCF_RESKEY_serveraid
+# (Adapter number of the ServeRAID adapter)
+# OCF_RESKEY_mergegroup
+# (MergeGroup # of the logical drive under consideration)
+#
+# The ServeRAID clustering model is a bit odd, and its terminology needs
+# a little explanation
+#
+# Logical Volume - a particular SCSI id {target id and LUN} on
+# a particular controller.
+#
+# Merge Group - when active on one side or the other of the ServeRAID
+# configuration it corresponds with a logical drive.
+# Merge group numbers are permanently assigned to a particular
+# chunk of storage. Shared merge groups are in the
+# range of 1 to 8, and are largely arbitrary.
+# Unshared merge groups start at 200.
+# We can only deal with shared merge groups. When a merge
+# group is activated on one of the controllers, it becomes
+# a logical volume on that system. NOTE: The order in
+# which the Merge Groups are activated determines which
+# SCSI Ids they become. This makes for extra headaches
+# for this script to deal with. It also means that if
+# you have more than one shared ServeRAID merge group on
+# a particular controller, that the SCSI IDs will not
+# be constant. This requires mounting by uuid or label.
+#
+# One of the ServerRAID controllers has to be configured with
+# SCSI initiator ID 6, and the other with SCSI id 7.
+#
+# At this time, the ServeRAID clustering solution only works with
+# RAID 1 setups. It does NOT support RAID 5. This is a firmware
+# bug in the ServeRAID where it doesn't fail over correctly
+# if the RAID5 array is in a critical state...
+#
+# Note that this script requires ServeRAID software version 6.10 or
+# later. This software is now available from IBM.
+#
+# An example usage in /etc/ha.d/haresources:
+# node1 10.0.0.170 ServeRAID::1::1
+#
+
+# Older ServeRAID utility returns 1 when it succeeds (weird)
+# BUT - the newly released version is more normal...
+
+#######################################################################
+# Initialization:
+
+: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
+. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
+
+# Parameter defaults
+
+OCF_RESKEY_serveraid_default=""
+OCF_RESKEY_mergegroup_default=""
+
+: ${OCF_RESKEY_serveraid=${OCF_RESKEY_serveraid_default}}
+: ${OCF_RESKEY_mergegroup=${OCF_RESKEY_mergegroup_default}}
+
+#######################################################################
+
+srsuccess=0
+SCSI="scsi "
+
+usage() {
+ cat <<-EOF
+ usage: $0 (start|stop|status|monitor|validate-all|meta-data)
+
+ You have to set the following environment virables before running $0 :
+ OCF_RESKEY_serveraid
+ (Adapter number of the ServeRAID adapter)
+ OCF_RESKEY_mergegroup
+ (MergeGroup # of the logical drive under consideration)
+
+ ServeRAID adapters are numbered starting from 1.
+
+ The shared merge group number is a number between 1 and 8 inclusive.
+ It indicates to the controller which logical disk to fail over.
+
+ node1 10.0.0.170 ServeRAID::1::1
+
+ PREREQUISITES:
+ You must configure your ServeRAID adapters for clustering for this
+ to work.
+
+ To do this, you must use the bootable "ServeRAID Support CD" and right
+ click your controller and pick "configure for clustering". The Linux
+ version of the ServeRAID manager does not have the "configure for
+ clustering" option.
+
+ You will need at least version 6.10 (~July 2003 release) of the ipssend
+ command for this script to work.
+
+ EOF
+}
+
+meta_data() {
+ cat <<END
+<?xml version="1.0"?>
+<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
+<resource-agent name="ServeRAID" version="1.0">
+<version>1.0</version>
+
+<longdesc lang="en">
+Resource script for ServeRAID. It enables/disables shared ServeRAID merge groups.
+</longdesc>
+<shortdesc lang="en">Enables and disables shared ServeRAID merge groups</shortdesc>
+
+<parameters>
+<parameter name="serveraid" unique="0" required="1">
+<longdesc lang="en">
+The adapter number of the ServeRAID adapter.
+</longdesc>
+<shortdesc lang="en">serveraid</shortdesc>
+<content type="integer" default="${OCF_RESKEY_serveraid_default}" />
+</parameter>
+
+<parameter name="mergegroup" unique="0" required="1">
+<longdesc lang="en">
+The logical drive under consideration.
+</longdesc>
+<shortdesc lang="en">mergegroup</shortdesc>
+<content type="integer" default="${OCF_RESKEY_mergegroup_default}" />
+</parameter>
+</parameters>
+
+<actions>
+<action name="start" timeout="40s" />
+<action name="stop" timeout="40s" />
+<action name="status" depth="0" timeout="20s" interval="10s" />
+<action name="monitor" depth="0" timeout="20s" interval="10s" />
+<action name="validate-all" timeout="5s" />
+<action name="meta-data" timeout="5s" />
+<action name="methods" timeout="5s" />
+</actions>
+</resource-agent>
+END
+}
+
+ServeRAID_methods() {
+ cat <<-!
+ start
+ stop
+ status
+ validate-all
+ methods
+ usage
+ meta-data
+ !
+}
+
+ServeRAIDSCSI="/proc/scsi/ips"
+
+
+IPS=ipssend
+proc_scsi=/proc/scsi/scsi
+
+
+parseinst() {
+ sr_adapter=error
+ sr_mergegroup=error
+ hostid=error
+ sr_logicaldrivenumber=error
+ if
+ [ $# -ne 2 ]
+ then
+ ocf_log err "Invalid ServeRAID instance: $*"
+ exit $OCF_ERR_ARGS
+ fi
+ PerlScript='next unless /^Host/; $_ .= <>.<>; print "$1 " if /SERVERAID/ and /Proces/ and /scsi(\d+)/'
+ # Get the list of host ids of the ServeRAID host adapters
+ hostlist=`$PERL -ne "${PerlScript}" <$proc_scsi`
+ # Figure the host id of the desired ServeRAID adapter
+ hostid=`echo $hostlist | cut -d' ' -f$1`
+ if
+ [ ! -f "$ServeRAIDSCSI/$hostid" ]
+ then
+ ocf_log err "No such ServeRAID adapter: $1"
+ exit $OCF_ERR_ARGS
+ fi
+
+ case $2 in
+ [1-8]);;
+ *) ocf_log err "Invalid Shared Merge Group Number: $2"
+ exit $OCF_ERR_ARGS;;
+ esac
+ sr_adapter=$1
+ sr_mergegroup=$2
+ CheckRaidLevel
+ return $?
+}
+
+SRLogicalDriveConfig() {
+ $IPS getconfig $sr_adapter ld
+}
+
+MergeGroupToSCSI_ID() {
+
+ PerlScript="while (<>) {
+ /logical drive number *([0-9]+)/i && (\$ld=\$1);
+ /part of merge group *: *$sr_mergegroup *\$/i && print \$ld - 1, \"\n\";
+ }"
+
+ ID=`SRLogicalDriveConfig | $PERL -e "$PerlScript"`
+ case $ID in
+ [0-9]*) echo "$ID"; return 0;;
+ *) return 1;;
+ esac
+}
+
+MergeGroupRaidLevel() {
+
+ PerlScript="while (<>) {
+ /RAID level *: *([0-9]+[A-Za-z]*)/i && (\$ld=\$1);
+ /part of merge group *: *$sr_mergegroup *\$/i && print \$ld, \"\n\";
+ }"
+
+ Level=`SRLogicalDriveConfig | $PERL -e "$PerlScript"`
+ case $Level in
+ ?*) echo "$Level"; return 0;;
+ *) return 1;;
+ esac
+}
+
+CheckRaidLevel() {
+ RAIDlevel=`MergeGroupRaidLevel`
+ case $RAIDlevel in
+ *5*)
+ ocf_log err "ServeRAID device $sr_adapter $sr_mergegroup is RAID level $RAIDlevel"
+ ocf_log err "This level of ServeRAID RAID is not supported for failover by the firmware."
+ exit $OCF_ERR_GENERIC;;
+ esac
+ return $OCF_SUCCESS
+}
+
+
+
+
+ReleaseSCSI() {
+ targetid=`MergeGroupToSCSI_ID`
+ echo "${SCSI}remove-single-device $hostid 0 $targetid 0" > $proc_scsi
+}
+
+AddSCSI() {
+ targetid=`MergeGroupToSCSI_ID`
+ echo "${SCSI}add-single-device $hostid 0 $targetid 0" > $proc_scsi
+}
+
+#
+# start: Enable the given ServeRAID device
+#
+ServeRAID_start() {
+ if
+ ServeRAID_status $serveraid $mergegroup
+ then
+ ocf_log debug "ServeRAID merge group $serveraid $mergegroup is running."
+ return $OCF_SUCCESS
+ else
+ if
+ #
+ # Normally we do a MERGE PARTNER, but if we still own the drive for
+ # some reason, then we'll need to do a MERGE OWN instead...
+ #
+ out=`$IPS MERGE $sr_adapter $sr_mergegroup PARTNER 2>&1`
+ if
+ [ $? -eq $srsuccess ]
+ then
+ ocf_log info "$out"
+ else
+ ocf_run $IPS MERGE $sr_adapter $sr_mergegroup OWN
+ fi
+ then
+ : OK All is well!
+ targetid=`MergeGroupToSCSI_ID`
+ sr_logicaldrivenumber=`expr $targetid + 1`
+ #run $IPS SYNCH $sr_adapter $sr_logicaldrivenumber &
+ # This version of the SYNCH command requires the 6.10 or later
+ # ServeRAID support CD.
+ # To avoid issues when called by lrmd, redirect stdout->stderr.
+ # Use () to create a subshell to make the redirection be synchronized.
+ ( ocf_run $IPS SYNCH $sr_adapter $sr_mergegroup & ) >&2
+ AddSCSI
+ else
+ return $OCF_ERR_GENERIC
+ fi
+ fi
+ if
+ ServeRAID_status "$@"
+ then
+ return $OCF_SUCCESS
+ else
+ ocf_log err "ServeRAID device $1 not active!"
+ exit $OCF_ERR_GENERIC
+ fi
+}
+
+
+#
+# stop: Disable the given ServeRAID device
+#
+ServeRAID_stop() {
+ parseinst "$@"
+ ReleaseSCSI
+ if
+ ocf_run $IPS UNMERGE $sr_adapter $sr_mergegroup
+ then
+ : UNMERGE $sr_adapter $sr_mergegroup worked
+ fi
+ if
+ ServeRAID_status "$@"
+ then
+ ocf_log err "ServeRAID device $* is still active!"
+ return $OCF_ERR_GENERIC
+ else
+ return $OCF_SUCCESS
+ fi
+}
+
+
+#
+# status: is the given device now available?
+#
+ServeRAID_status() {
+ parseinst "$@"
+ #
+ # The output we're looking for
+ # Part of merge group : 2
+ #
+ SRLogicalDriveConfig \
+ | grep -i "part of merge group[ ]*: *$sr_mergegroup *\$" >/dev/null
+}
+
+#
+# validate_all: are the OCF instance parameters valid?
+#
+ServeRAID_validate_all() {
+ check_binary $PERL
+
+# parseinst() will do all the work...
+ parseinst "$@"
+ return $?
+}
+
+if
+ ( [ $# -ne 1 ] )
+then
+ usage
+ exit $OCF_ERR_ARGS
+fi
+
+# These operations don't require OCF instance parameters to be set
+case "$1" in
+ meta-data)
+ meta_data
+ exit $OCF_SUCCESS;;
+#
+# methods: What methods do we support?
+#
+ methods)
+ ServeRAID_methods
+ exit $?;;
+ usage)
+ usage
+ exit $OCF_SUCCESS;;
+ *)
+ ;;
+esac
+
+if
+ ( [ -z "$OCF_RESKEY_serveraid" ] || [ -z "$OCF_RESKEY_mergegroup" ] )
+then
+ ocf_log err "You have to set the OCF_RESKEY_serveraid and OCF_RESKEY_mergegroup\n
+ enviroment virables before running $0 !"
+# usage
+ exit $OCF_ERR_GENERIC
+fi
+
+: Right Number of arguments..
+serveraid=$OCF_RESKEY_serveraid
+mergegroup=$OCF_RESKEY_mergegroup
+
+# Look for the start, stop, status, or methods calls...
+case "$1" in
+ stop)
+ ServeRAID_stop $serveraid $mergegroup
+ exit $?;;
+ start)
+ ServeRAID_start $serveraid $mergegroup
+ exit $?;;
+ status|monitor)
+ if
+ ServeRAID_status $serveraid $mergegroup
+ then
+ ocf_log debug "ServeRAID merge group $serveraid $mergegroup is running."
+ exit $OCF_SUCCESS
+ else
+ ocf_log debug "ServeRAID merge group $serveraid $mergegroup is stopped."
+ exit $OCF_NOT_RUNNING
+ fi
+ exit $?;;
+ validate-all)
+ ServeRAID_validate_all $serveraid $mergegroup
+ exit $?;;
+ *)
+ usage
+ exit $OCF_ERR_UNIMPLEMENTED;;
+
+esac