ctdb/config/events.d/01.reclock

   1 #!/bin/sh
   2 # script to check accessibility to the reclock file on a node
   3
   4 [ -n "$CTDB_BASE" ] || \
   5     export CTDB_BASE=$(cd -P $(dirname "$0") ; dirname "$PWD")
   6
   7 . $CTDB_BASE/functions
   8 loadconfig
   9
  10 case "$1" in
  11     init)
  12         ctdb_counter_init
  13
  14         if [ -n "$CTDB_RECOVERY_LOCK" ] ; then
  15             d=$(dirname "$CTDB_RECOVERY_LOCK")
  16             mkdir -vp "$d"
  17         fi
  18         ;;
  19
  20     monitor)
  21         # Early exit if not using a reclock file
  22         [ -n "$CTDB_RECOVERY_LOCK" ] || exit 0
  23
  24         # Try to stat the reclock file as a background process so that
  25         # we don't block in case the cluster filesystem is unavailable
  26         (
  27             if stat $CTDB_RECOVERY_LOCK ; then
  28                 # We could stat the file, reset the counter
  29                 ctdb_counter_init
  30             fi
  31         ) >/dev/null 2>&1 &
  32
  33         ctdb_counter_incr
  34         if ! ctdb_check_counter "quiet" -ge 200 ; then
  35             echo "Reclock file \"$CTDB_RECOVERY_LOCK\" can not be accessed. Shutting down."
  36             df
  37             sleep 1
  38             ctdb shutdown
  39         fi
  40
  41         ctdb_check_counter "error" -gt 3
  42         ;;
  43
  44     *)
  45         ctdb_standard_event_handler "$@"
  46         ;;
  47 esac
  48
  49 exit 0