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