source: gpfs_3.1_ker2.6.20/lpp/mmfs/samples/nfscluster/start.nfs @ 32

#!/bin/ksh

# @(#)67  1.13.1.10  src/avs/fs/mmfs/samples/nfscluster/start.nfs, mmfs, avs_rgpfs24, rgpfs24s010a 2/16/07 02:32:51

#

# start.nfs <GPFS_IP_ADDRESS>

#



if [ ! -f /var/mmfs/etc/nfsfuncs ]; then

    echo "$0: Can't find NFS functions in /var/mmfs/etc"

    exit 0

fi

. /var/mmfs/etc/nfsfuncs



myip=$1

[ "$myip" == "" ] && myip=$(myGPFSIP)

[ "$myip" != "" ] || die "Usage: start.nfs <GPFS IP address>"



debugmsg "start.nfs called with ip=$myip"



# Setup

rotatelog

_unlink /tmp/ha-nfs-reboot



configHA $myip

[ $? -ne 0 ] && die "start.nfs: configHA failed"



# did we mount any of the exported fs

isAnyExported

[ $? -ne 0 ] && die "start.nfs: mount failed"



# Clear any old locks in Linux.

resetLockd



# Set nfsd proc fs, used for grace control

debuglog mount -t nfsd nfsd /proc/fs/nfsd



# Stop NFSD before doing failback

debuglog rpc.nfsd 0



# Is this a failback?

[ $iptakeover -eq 1 ] && IPfailback $myip



# Bring up all nfs ip address

nfsips=$(getNfsIPs $myip)

msg "Enabling interface(s) for IP address(es) $nfsips"



typeset -i connections=0

while true; do

    for ip in $nfsips; do

  ifUp $ip

  iface=$(getifname $ip)

  checkLinkStatus $iface

  if [ $? -ne 1 ]; then

      gwIP=$(route -n |awk '/UG/ {print $2}')

      if [ -n "$gwIP" ]; then

    ping -c 1 -w 5 $gwIP > /dev/null

    if [ $? -ne 0 ]; then

        debugmsg "Failed to ping the gateway at $gwIP"

    else

        connections=1

    fi

      else

    connections=1

      fi

  fi

    done

    if [ $connections -eq 0 ]; then

  sleep 10

    else

  break

    fi

done



# Start nfs server.

debuglog umount /proc/fs/nfsd

nfsService start



_mkdir $SHARED_RECOVERY/$myip



# takeover nodes that were recovered by this node before failing

for failed_node in $(ls -A $SHARED_RECOVERY/$myip 2> /dev/null); do

    debugmsg "Do recovery for node $failed_node at $myip start up"

    IPtakeover $myip $failed_node

done



# takeover nodes that are not up

next=$(getNextNode $myip $myip)

debugmsg check other nodes starting with $next

while [ -n "$next" ]; do

    isNodeUp $next

    if [ $? -ne 0 ]; then

  # was already on my list and was handled above

  if [ ! -f $SHARED_RECOVERY/$myip/$next ]; then

     isNodeUp $next

     if [ $? -ne 0 ]; then

        touch $SHARED_RECOVERY/$myip/$next

        sleep 10

        if [ -f $SHARED_RECOVERY/$myip/$next ]; then

           isNodeUp $next

           if [ $? -ne 0 ]; then

        debugmsg "Do start recovery for node $next"

        IPtakeover $myip $next

                    next=$(getNextNode $next $myip)

                    continue

           fi

        fi

     fi

  fi

    fi

    break

done





# reclaim locks

startReclaim $myip

backupSmDir /tmp/statd



if [ $monitor -eq 1 ]; then

    nfsmonitor -s

fi

exit 0