source: gpfs_3.1_ker2.6.20/lpp/mmfs/samples/nfscluster/takeover @ 250

Last change on this file since 250 was 16, checked in by rock, 17 years ago
  • Property svn:executable set to *
File size: 1.9 KB
Line 
1#!/bin/ksh
2# @(#)11  1.1  src/avs/fs/mmfs/samples/nfscluster/takeover, mmfs, avs_rgpfs24, rgpfs24s011a 3/7/07 20:57:09
3#
4
5if [ ! -f /var/mmfs/etc/nfsfuncs ]; then
6    echo "$0: Can't find NFS functions in /var/mmfs/etc"
7    exit 0
8fi
9. /var/mmfs/etc/nfsfuncs
10
11forcedTakeover() {
12    me=$1
13    failed=$2
14    typeset -i do_reclaim=0
15
16    [ "$me" == "$failed" ] && return
17
18    msg "Initiating forced IP takeover of $failed due to node failure"
19
20    _mkdir ${SHARED_RECOVERY}/$me
21
22    stopNode $failed
23    nfsIPs=$(getNfsIPs $failed)
24    debugmsg "forcedTakeover ips: $nfsIPs"
25    for ip in $nfsIPs; do
26        # Takeover IP and issue gratuitous ARP to the clients for the node
27        # that failed so that clients can reconnect to the new address
28  recoverNode $ip $failed
29        [ $? -eq 0 ] && do_reclaim=1
30    done
31
32    if [ $do_reclaim -ne 0 ]; then
33  # got the IP
34        debuglog touch ${SHARED_RECOVERY}/$me/$failed
35    else
36        # did not get IP, takeover failed, remove the entry
37  _unlink ${SHARED_RECOVERY}/$me/$failed
38  return
39    fi
40    debugmsg "forcedTakeover: File contents:"
41    debugmsg $(ls -R ${SHARED_RECOVERY}/$me)
42    _cp ${SHARED_NFS}/$failed/statd/sm/* ${SHARED_NFS}/$me/statd/sm
43    checkDynamicGrace
44    [ $? -eq 1 ] && startReclaim $failed
45}
46# Main
47
48[ $# -eq 1 ] || die "Usage: $0 GPFS-IP"
49
50node=$1
51me=$(myGPFSIP)
52
53# Check if failed node is a valid GPFS IP address
54let valid=0
55gpfsIPs=$(getAllGPFSIPs)
56for ip in $gpfsIPs; do
57    if [ "$ip" == "$node" ]; then
58        valid=1
59        break
60    fi
61done
62[ $valid -eq 1 ] || die "$node is not a valid GPFS IP address"
63
64debugmsg "Start forced node recovery for $node"
65forcedTakeover $me $node
66debuglog ls -A $SHARED_RECOVERY/$node
67# recover other IPs that are serviced by the failed node
68for ip in $(getFailedNodes $node); do
69   debugmsg "Do 2nd recovery for node $ip"
70   forcedTakeover $me $ip
71   _unlink ${SHARED_RECOVERY}/$node/$ip
72done
Note: See TracBrowser for help on using the repository browser.