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#!/bin/sh
# by hxinwei@gmail.com
# License: GNU General Public License 2 (GPL2)
if [ -n "$OCF_DEBUG_LIBRARY" ]; then
. $OCF_DEBUG_LIBRARY
else
: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat}
. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs
fi
# Parameter defaults
OCF_RESKEY_scsi_reserve_default="/usr/sbin/scsi_reserve"
OCF_RESKEY_sharedisk_default="/dev/sdb"
OCF_RESKEY_start_loop_default="10"
: ${OCF_RESKEY_scsi_reserve=${OCF_RESKEY_scsi_reserve_default}}
: ${OCF_RESKEY_sharedisk=${OCF_RESKEY_sharedisk_default}}
: ${OCF_RESKEY_start_loop=${OCF_RESKEY_start_loop_default}}
scsi2reserve_meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="scsi2reservation" version="1.0">
<version>1.0</version>
<longdesc lang="en">
The scsi-2-reserve resource agent is a place holder for SCSI-2 reservation.
A healthy instance of scsi-2-reserve resource, indicates the own of the specified SCSI device.
This resource agent depends on the scsi_reserve from scsires package, which is Linux specific.
</longdesc>
<shortdesc lang="en">
scsi-2 reservation
</shortdesc>
<parameters>
<parameter name="scsi_reserve" unique="0" required="0">
<longdesc lang="en">
The scsi_reserve is a command from scsires package.
It helps one to issue SCSI-2 reservation on SCSI devices.
</longdesc>
<shortdesc lang="en">Manages exclusive access to shared storage media thrugh SCSI-2 reservations</shortdesc>
<content type="string" default="${OCF_RESKEY_scsi_reserve_default}" />
</parameter>
<parameter name="sharedisk" unique="0" required="0">
<longdesc lang="en">
The shared disk that can be reserved.
</longdesc>
<shortdesc lang="en">
Shared disk.
</shortdesc>
<content type="string" default="${OCF_RESKEY_sharedisk_default}" />
</parameter>
<parameter name="start_loop" unique="0" required="0">
<longdesc lang="en">
We are going to try several times before giving up. Start_loop indicates how many times we are going to re-try.
</longdesc>
<shortdesc lang="en">
Times to re-try before giving up.
</shortdesc>
<content type="string" default="${OCF_RESKEY_start_loop_default}" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="300s" />
<action name="stop" timeout="100s" />
<action name="monitor" depth="0" timeout="20s" interval="20s" />
<action name="meta-data" timeout="5s" />
<action name="validate-all" timeout="30s" />
</actions>
</resource-agent>
END
return $OCF_SUCCESS
}
scsi2reserve_usage() {
cat <<END
usage: $0 {start|stop|monitor|validate-all|meta-data}
END
}
case $__OCF_ACTION in
meta-data) scsi2reserve_meta_data
exit $OCF_SUCCESS
;;
usage|help) scsi2reserve_usage
exit $OCF_SUCCESS
;;
*)
;;
esac
scsi2reserve_validate ()
{
if [ ! -x "${OCF_RESKEY_scsi_reserve}" ]; then
exit $OCF_ERR_INSTALLED
fi
if [ -z "${OCF_RESKEY_sharedisk}" ]; then
exit $OCF_ERR_GENERIC
fi
if [ ! -b "${OCF_RESKEY_sharedisk}" ]; then
exit $OCF_ERR_ARGS
fi
}
scsi2reserve_validate
scsi2reserve_start ()
{
ite=$OCF_RESKEY_start_loop
while [ $ite -ge 0 ]; do
/sbin/startproc ${OCF_RESKEY_scsi_reserve} -d ${OCF_RESKEY_sharedisk} --preempt --hold --stonith
sleep 15
/sbin/checkproc ${OCF_RESKEY_scsi_reserve}
rc=$?
if [ $rc -eq 0 ]; then
exit $OCF_SUCCESS
fi
ite=`expr $ite - 1`
done
exit $OCF_ERR_GENERIC
}
scsi2reserve_monitor ()
{
/sbin/checkproc ${OCF_RESKEY_scsi_reserve}
rc=$?
if [ $rc -eq 0 ]; then
exit $OCF_SUCCESS
else
exit $OCF_NOT_RUNNING
fi
}
scsi2reserve_stop ()
{
/sbin/killproc ${OCF_RESKEY_scsi_reserve}
${OCF_RESKEY_scsi_reserve} -d ${OCF_RESKEY_sharedisk} --release
exit $OCF_SUCCESS
}
if [ $# -ne 1 ]; then
scsi2reserve_usage
exit $OCF_ERR_ARGS
fi
case $__OCF_ACTION in
start) scsi2reserve_start
;;
stop) scsi2reserve_stop
;;
monitor) scsi2reserve_monitor
;;
validate-all) scsi2reserve_validate
exit $OCF_SUCCESS
;;
*) scsi2reserve_usage
exit $OCF_ERR_UNIMPLEMENTED
;;
esac
exit $?
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