PVFS2

#!/bin/sh
#
#	High-Availability PVFS2 control script
#
# Based on Apache OCF script included in heartbeat package, authored by Alan
# Robertson and Sun Jiang Dong.
#
# License:      GNU General Public License (GPL)
#
# PVFS2
#
# Description:	starts/stops PVFS2 servers.
#
# OCF parameters (required in cib):
#  OCF_RESKEY_fsconfig
#  OCF_RESKEY_port
#  OCF_RESKEY_pidfile
#  OCF_RESKEY_ip
#  OCF_RESKEY_alias

# example values:
#OCF_RESKEY_fsconfig=/root/simple.conf
#OCF_RESKEY_port=3334
#OCF_RESKEY_pidfile=/tmp/pvfs2-server.pid
#OCF_RESKEY_ip=virtual1
#OCF_RESKEY_alias=virtual1

VARRUN=/var/run

# newer versions of heartbeat have moved the ocf-shellfuncs  file
if [ -f /usr/lib/ocf/resource.d/heartbeat/.ocf-shellfuncs ] ; then
. /usr/lib/ocf/resource.d/heartbeat/.ocf-shellfuncs
else
. /usr/lib/heartbeat/ocf-shellfuncs
fi

#######################################################################
#
#	Configuration options - usually you don't need to change these
#
#######################################################################
#
PVFS2D=/usr/local/sbin/pvfs2-server
PVFS2CHECK=/usr/local/bin/pvfs2-check-server


#	End of Configuration options
#######################################################################

CMD=`basename $0`

#	The config-file-pathname is the pathname to the configuration
#	file for this web server.  Various appropriate defaults are
#	assumed if no config file is specified.  If this command is
#	invoked as *IBM*, then the default config file name is
#	$DEFAULT_IBMCONFIG, otherwise the default config file
#	will be $DEFAULT_NORMCONFIG.
usage() {
  cat <<-!
usage: $0 action

action:
	start	start the PVFS2 server

	stop	stop the PVFS2 server

	status	return the status of PVFS2 server, run or down

	monitor  return TRUE if the server appears to be working.

	meta-data	show meta data message

	validate-all	validate the instance parameters
	!
  exit $OCF_ERR_ARGS
}

#
#	Check if the port is valid
#
CheckPort() {
  ocf_is_decimal "$1" && [ $1 -gt 0 ]
}

#
# return TRUE if a process with given PID is running
#
ProcessRunning() {
    PVFS2PID=$1
    # Use /proc if it looks like it's here...
    if
      [ -d /proc -a -d /proc/1 ]
    then
       [ -d /proc/$PVFS2PID ]
    else
      #  This assumes we're running as root...
      kill -0 "$PVFS2PID" >/dev/null 2>&1
    fi
}


silent_status() {
  if
    [ -f $OCF_RESKEY_pidfile  ] 
  then
    ProcessRunning `cat $OCF_RESKEY_pidfile`
  else
    : No pid file
    false
  fi
}

start_pvfs2() {
   if validate_all_pvfs2; then
      : OK
   else
      ocf_log err "Error parsing PVFS2 resource parameters"
      exit $OCF_ERR_ARGS
   fi

  if
    silent_status
  then
    ocf_log info "$CMD already running (pid $PVFS2PID)"
    return $OCF_SUCCESS
  fi

  # set ulimit values
  ulimit -n 100000 && ulimit -c unlimited

  # try to create storage space (ok if it fails)
  $PVFS2D $OCF_RESKEY_fsconfig -a $OCF_RESKEY_alias -f

  # launch daemon
  ocf_run $PVFS2D -p $OCF_RESKEY_pidfile -a $OCF_RESKEY_alias $OCF_RESKEY_fsconfig 
  if
    [ $? -ne 0 ]
  then
    ocf_log warn "pvfs2-server failed to start."
    return $?
  fi

  # wait a little bit
  sleep 8

  # does the pidfile still exist (indicating that the server is still running?)
  if
    [ -a $OCF_RESKEY_pidfile ]
  then
    return $OCF_SUCCESS
  else
    ocf_log warn "pvfs2-server died after starting."
    return $OCF_ERR_GENERIC
  fi
}

stop_pvfs2() {
  if
    silent_status
  then
    if
      kill $PVFS2PID
    then
      tries=0
      while
        ProcessRunning $PVFS2PID &&
        [ $tries -lt 10 ]
      do
        sleep 1
        kill $PVFS2PID >/dev/null 2>&1
        ocf_log info "Killing pvfs2-server PID $PVFS2PID"
        tries=`expr $tries + 1`
      done
    else
      ocf_log warn "Killing pvfs2-server PID $PVFS2PID FAILED."
    fi
    if
      ProcessRunning $PVFS2PID
    then
      sleep 1
      kill -9 $PVFS2PID >/dev/null 2>&1
      ocf_log warn "Killing (-9) pvfs2-server PID $PVFS2PID"
      sleep 5
      if
        ProcessRunning $PVFS2PID
      then
        ocf_log info "$CMD still running ($PVFS2PID)."
        false
      else
        ocf_log info "$CMD stopped."
      fi
    else
      ocf_log info "$CMD stopped."
    fi
  else
    ocf_log info "$CMD is not running."
  fi
}

status_pvfs2() {
  silent_status
  rc=$?
  if
    [ $rc -eq 0 ]
  then
    ocf_log info "$CMD is running (pid $PVFS2PID)."
    return $OCF_SUCCESS
  else
    ocf_log info "$CMD is stopped."
    return $OCF_NOT_RUNNING
  fi
}


monitor_pvfs2() {
  if
    silent_status
  then
    ocf_run $PVFS2CHECK -h $OCF_RESKEY_ip -f pvfs2-fs -n tcp -p $OCF_RESKEY_port
  else
    ocf_log info "$CMD not running"
    return $OCF_NOT_RUNNING
  fi
}

metadata_pvfs2(){
	cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="PVFS2">
<version>1.0</version>

<longdesc lang="en">
starts/stops PVFS2 servers.
</longdesc>
<shortdesc lang="en">starts/stops PVFS2 servers.</shortdesc>

<parameters>
<parameter name="fsconfig" required="1">
<longdesc lang="en">
The full path name of file system config file.
</longdesc>
<shortdesc lang="en">fs config file path</shortdesc>
</parameter>

<parameter name="port" required="1">
<longdesc lang="en">
Port number that server will listen on.
</longdesc>
<shortdesc lang="en">server port number</shortdesc>
</parameter>

<parameter name="pidfile" required="1">
<longdesc lang="en">
The full path name of the server pid file.
</longdesc>
<shortdesc lang="en">server pid file</shortdesc>
</parameter>

<parameter name="ip" required="1">
<longdesc lang="en">
Virtual ip address that the server will run on.
</longdesc>
<shortdesc lang="en">virtual IP address</shortdesc>
</parameter>

<parameter name="alias" required="1">
<longdesc lang="en">
PVFS server alias to be passed to -a argument.
</longdesc>
<shortdesc lang="en">PVFS server alias</shortdesc>
</parameter>

</parameters>

<actions>
<action name="start"   timeout="90" />
<action name="stop"    timeout="100" />
<action name="status"  timeout="30" />
<action name="monitor" depth="0"  timeout="20" interval="10" start-delay="1m" />
<action name="meta-data"  timeout="5" />
<action name="validate-all"  timeout="5" />
</actions>
</resource-agent>
END

	exit $OCF_SUCCESS
}

validate_all_pvfs2() {

# pidfile: make sure it is an absolute path
   case $OCF_RESKEY_pidfile in
      /*) ;;
      *) ocf_log err "pidfile [$OCF_RESKEY_pidfile] should be an absolute path!" 
         exit $OCF_ERR_ARGS
         ;;
   esac

# port: just make sure it is a decimal
  if CheckPort $OCF_RESKEY_port; then
	: OK
  else
	ocf_log err "Port number $OCF_RESKEY_port is invalid!"
	exit $OCF_ERR_ARGS
  fi

# fsconfig: make sure the file exists
if [ ! -f $OCF_RESKEY_fsconfig ]; then
   ocf_log err "Configuration file $OCF_RESKEY_fsconfig not found!"
   exit $OCF_ERR_CONFIGURED
fi

# make sure we can execute server daemon
if [ ! -x $PVFS2D ]; then
   ocf_log err "PVFS2 daemon $PVFS2D not found or is not an executable!"
   exit $OCF_ERR_ARGS
fi

  return $OCF_SUCCESS
}

if
  [ $# -eq 1 ]
then
  COMMAND=$1
else
  usage
fi

case $COMMAND in
  start)	start_pvfs2;;
  stop)		stop_pvfs2;;
  status)	status_pvfs2;;
  monitor)	monitor_pvfs2;;
  meta-data)	metadata_pvfs2;;
  validate-all)	validate_all_pvfs2;;
  *)		usage;;
esac