ctdb/config/events.d/60.nfs

   1 #!/bin/sh
   2 # script to manage nfs in a clustered environment
   3
   4 [ -n "$CTDB_BASE" ] || \
   5     export CTDB_BASE=$(cd -P $(dirname "$0") ; dirname "$PWD")
   6
   7 . $CTDB_BASE/functions
   8
   9 service_name="nfs"
  10 service_start ()
  11 {
  12     startstop_nfs stop
  13     startstop_nfs start
  14     set_proc "sys/net/ipv4/tcp_tw_recycle" 1
  15 }
  16 service_stop ()
  17 {
  18     startstop_nfs stop
  19 }
  20 service_reconfigure ()
  21 {
  22     # if the ips have been reallocated, we must restart the lockmanager
  23     # across all nodes and ping all statd listeners
  24     [ -x $CTDB_BASE/statd-callout ] && {
  25         $CTDB_BASE/statd-callout notify &
  26     } >/dev/null 2>&1
  27 }
  28
  29 nfs_check_thread_count ()
  30 {
  31     [ "$CTDB_MONITOR_NFS_THREAD_COUNT" = "yes" ] || return 0
  32
  33     # If $RPCNFSDCOUNT/$USE_KERNEL_NFSD_NUMBER isn't set then we could
  34     # guess the default from the initscript.  However, let's just
  35     # assume that those using the default don't care about the number
  36     # of threads and that they have switched on this feature in error.
  37     _configured_threads="${RPCNFSDCOUNT:-${USE_KERNEL_NFSD_NUMBER}}"
  38     [ -n "$_configured_threads" ] || return 0
  39
  40     # nfsd should be running the configured number of threads.  If
  41     # there are a different number of threads then tell nfsd the
  42     # correct number.
  43     _running_threads=$(get_proc "fs/nfsd/threads")
  44     # Intentionally not arithmetic comparison - avoids extra errors
  45     # when get_proc() fails...
  46     if [ "$_running_threads" != "$_configured_threads" ] ; then
  47         echo "Attempting to correct number of nfsd threads from ${_running_threads} to ${_configured_threads}"
  48         set_proc "fs/nfsd/threads" "$_configured_threads"
  49     fi
  50 }
  51
  52 loadconfig
  53
  54 [ "${CTDB_NFS_SERVER_MODE:-${NFS_SERVER_MODE}}" != "ganesha" ] || exit 0
  55
  56 ctdb_setup_service_state_dir
  57
  58 ctdb_start_stop_service
  59
  60 is_ctdb_managed_service || exit 0
  61
  62 ctdb_service_check_reconfigure
  63
  64 case "$1" in
  65      init)
  66         # read statd from persistent database
  67         ;;
  68      startup)
  69         ctdb_service_start
  70         ;;
  71
  72      shutdown)
  73         ctdb_service_stop
  74         ;;
  75
  76      takeip)
  77         ctdb_service_set_reconfigure
  78         ;;
  79
  80      releaseip)
  81         ctdb_service_set_reconfigure
  82         ;;
  83
  84       monitor)
  85         # Check that directories for shares actually exist.
  86         [ "$CTDB_NFS_SKIP_SHARE_CHECK" = "yes" ] || {
  87             exportfs -v | grep '^/' |
  88             sed -r -e 's@[[:space:]]+[^[:space:]()]+\([^[:space:]()]+\)$@@' |
  89             sort -u |
  90             ctdb_check_directories
  91         } || exit $?
  92
  93         update_tickles 2049
  94
  95         nfs_check_rpc_services
  96
  97         nfs_check_thread_count
  98         ;;
  99
 100     *)
 101         ctdb_standard_event_handler "$@"
 102         ;;
 103 esac
 104
 105 exit 0