#!/bin/sh##	$Id: drbd.in,v 1.3 2004/09/06 10:33:02 lars Exp $##       OCF Resource Agent compliant drbd resource script.## WARNING: This is proof of concept code and likely doesn't work at all!## Copyright (c) 2004 SUSE LINUX AG, Lars Marowsky-Br閑#                    All Rights Reserved.## This program is free software; you can redistribute it and/or modify# it under the terms of version 2 of the GNU General Public License as# published by the Free Software Foundation.## This program is distributed in the hope that it would be useful, but# WITHOUT ANY WARRANTY; without even the implied warranty of# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.## Further, this software is distributed without any warranty that it is# free of the rightful claim of any third person regarding infringement# or the like.  Any license provided herein, whether implied or# otherwise, applies only to this software file.  Patent licenses, if# any, provided herein do not apply to combinations of this program with# other software, or any other product whatsoever.## You should have received a copy of the GNU General Public License# along with this program; if not, write the Free Software Foundation,# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.### TODO: # - All calls to external commands should use the ocf_exec function#   which should be implemented.######################################################################## Initialization:. @hb_libdir@/ocf-shellfuncsDRBDADM="@DRBDADM@"DRBDSETUP="@DRBDSETUP@"#######################################################################meta_data() {	cat <<END<?xml version="1.0"?><!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd"><resource-agent name="IPaddr2" version="0.9"><version>1.0</version><parameters><parameter name="drbd" unique="1"><longdesc lang="en">The name of the drbd resource from the drbd.conf file.</longdesc><shortdesc lang="en">drbd name</shortdesc><content type="string" default="drbd0" /></parameter><parameter name="drbdconf"><longdesc lang="en">Full path to the drbd.conf file.</longdesc><shortdesc lang="en">Path to drbd.conf</shortdesc><content type="string" default="/etc/drbd.conf"/></parameter><parameter name="incarnations_max_global"><longdesc lang="en">Number of total incarnations of this drbd.</longdesc><shortdesc lang="en">Number of nodes</shortdesc><content type="integer" default="2"/></parameter><parameter name="incarnations_max_node"><longdesc lang="en">How many incarnations on one node. Don't mess.</longdesc><shortdesc lang="en">Set to one</shortdesc><content type="integer" default="1"/></parameter><parameter name="incarnations_max_active_global"><longdesc lang="en">How many incarnations can be primary. Don't mess.</longdesc><shortdesc lang="en">Set to one</shortdesc><content type="integer" default="1"/></parameter></parameters><actions><action name="start"   timeout="90" /><action name="promote"   timeout="90" /><action name="demote"   timeout="90" /><action name="notify"   timeout="90" /><action name="stop"    timeout="100" /><action name="xstatus"    timeout="100" /><action name="monitor" depth="0"  timeout="20" interval="10" start-delay="1m" /><action name="meta-data"  timeout="5" /><action name="verify-all"  timeout="30" /></actions></resource-agent>END	exit $OCF_SUCCESS}drbd_init() {	if [ $UID -ne 0 ]; then		ha_log "ERROR: You must be root."		exit $OCF_ERR_PERM	fi		if [ ! -x "$DRBDADM" ]; then		ha_log "ERROR: drbdadm not installed."		exit $OCF_ERR_INSTALLED	fi		DRBD="$OCF_RESKEY_drbd"	INC_NO="$OCF_RESKEY_incarnation_no"	DRBDCONF="$OCF_RESKEY_drbdconf"		if [ ! -f "$DRBDCONF" ]; then		ha_log "ERROR: drbd.conf not installed."		exit $OCF_ERR_CONFIGURED	fi	DRBD_STATE=$($DRBDADM state $DRBD)	DRBD_STATE_LOCAL=$(echo $DRBD_STATE | sed -e 's#/.*##')	DRBD_STATE_REMOTE=$(echo $DRBD_STATE | sed -e 's#.*/##')	DRBD_CSTATE=$($DRBDADM state $DRBD)	# TODO: Inherit max primary etc from configuration and do	# something about them. Right now, we just assume 1/1.}#######################################################################drbd_usage() {	cat <<ENDusage: $0 {meta-data}Expects to have a fully populated OCF RA-compliant environment set.END}drbd_start() {	# TODO: Verify idempotency of drbdadm up	$DRBDADM -c $DRBDCONF up $DRBD	if [ $? -eq 0 ]; then		return $OCF_SUCCESS	else		return $OCF_ERR_GENERIC	fi}drbd_stop() {	# TODO: this is a _force_ operation. we may need to kill higher	# levels to be able to down drbd. figure out how...	$DRBDADM -c $DRBDCONF down $DRBD	if [ $? -eq 0 ]; then		return $OCF_SUCCESS	else		return $OCF_ERR_GENERIC	fi}drbd_monitor() {	# TODO: Think about how to monitor drbd and what constitutes	# failure cases...	# diskless etc?	# A secondary node which is supposed to be primary?	return $OCF_SUCCESS}drbd_promote() {	if [ "x$DRBD_STATE_LOCAL" = "xPrimary" ]; then		return $OCF_SUCCESS	fi	$DRBDADM -c $DRBDCONF primary $DRBD	if [ $? -eq 0 ]; then		return $OCF_SUCCESS	else		return $OCF_ERR_GENERIC	fi	return $OCF_SUCCESS}drbd_demote() {	# TODO: this is a _force_ operation. we may need to kill higher	# levels (or switch them to r/o) to be able to demote drbd.	# figure out how...		if [ "x$DRBD_STATE_LOCAL" = "xSecondary" ]; then		return $OCF_SUCCESS	fi	$DRBDADM -c $DRBDCONF secondary $DRBD	if [ $? -eq 0 ]; then		return $OCF_SUCCESS	else		return $OCF_ERR_GENERIC	fi}drbd_notify() {	local target_action="$OCF_RESKEY_target_action"	local notify_type="$OCF_RESKEY_notify_type"	local target_status="${OCF_RESKEY_target_status:-1}"	if [ "x$notify_type" = "xpost" ]; then		case $target_action in		stop|fence)			# On the primary, this would unblock waiting for			# ACKs from the secondary.			# On the secondary, this would un-taint the			# local data and allow the node to be promoted			# to primary.			#			if [ "$target_status" -eq 0 ]; then				# TODO: This comamnd is also not				# implemented in drbdadm yet ;-)				$DRBDADM mark_peer_down $DRBD			fi			;;		monitor)			if [ "$target_status" -ne 0 ]; then				# TODO: Anything we should do about this?			fi		esac	fi		return $OCF_SUCCESS}drbd_xstatus() {	# TODO: This extended status is PROOF OF CONCEPT CODE FOR	# DISCUSSION only.	local preference=0	local ability=1	case $DRBD_CSTATE in	SyncSource|PausedSyncS|WFBitMapS|SkippedSyncS)		preference=10		;;	Diskless|Inconsistent)		# TODO: drbd doesn't actually tell us about these two.		ability=0		;;	*)	preference=5		;;	esac		case $DRBD_STATE_LOCAL in	Primary)		preference=100		;;	esac	cat <<END<resource_status name="$OCF_INSTANCE" incarnation="$INC_NO"><promotion_data preference="$drbd_preference" ability="$ability" /></resource_status>END	return $OCF_SUCCESS}case $ACTION inmeta-data)	meta_data		;;start|stop|monitor|xstatus|validate-all|promote|demote|notify)		drbd_init		drbd_$ACTION		exit $?		;;usage|help)	drbd_usage		exit $OCF_SUCCESS		;;*)		drbd_usage		exit $OCF_ERR_UNIMPLEMENTED		;;esac