failover.sh

#!/bin/sh

log_name="filer"
log_prio="user.notice"

flog () {
  logger -p "$log_prio" -t "$log_name" "$1"
}

boottime=$(sysctl -n kern.boottime | awk '{print $4}' | tr -dc 0-9)
now=$(date +%s)
delta=$(($now-$boottime))

if [ $delta -lt 180 -o -f /root/scripts/NO_FAILOVER ] ; then
  flog "Failover script skipped (delta: $delta)"
  exit
else
  flog "Running failover script (delta: $delta)"
fi

case "$1" in
  MASTER)
    flog "Shutting down the replication interface"
    ifconfig bge1 down
    sysrc ifconfig_bge1="down"

    # Backup is the new master
    flog "Adapting advskew on the main interface"
    sysrc ifconfig_bge0_alias0="inet vhid 54 advskew 10 pass xxx alias 192.168.10.15/32" 
    ifconfig bge0 vhid 54 advskew 10

    flog "Shutting down the CTLD daemon"
    sysrc ctld_enable="NO"
    service ctld stop
    while pgrep -u root ctld > /dev/null ; do
      sleep 0.01
    done

    flog "Import data zpool"
    zpool import -f -o cachefile=none data
  ;;

  BACKUP)
    flog "MASTER -> BACKUP"
  ;;
esac