failover.sh

~/ salt "filer2.prod.lan" cmd.run "cat /usr/local/etc/devd/filer_failover.conf"
filer2.prod.lan:
    notify 0 {
      match "system"    "CARP";
      match "subsystem" "54@bge0";
      match "type"      "(MASTER|BACKUP)";
      action "/root/scripts/filer_failover.sh $type";
    };

~/ salt "filer2.prod.lan" cmd.run "cat /root/scripts/filer_failover.sh"        
filer2.prod.lan:
    #!/bin/sh
    
    log_name="filer"
    log_prio="user.notice"
    
    flog () {
      logger -p "$log_prio" -t "$log_name" "$1"
    }
    
    case "$1" in
      MASTER)
        flog "Shutting down the replication interface"
        sysrc ifconfig_bge1="down"
        ifconfig bge1 down
    
        # Backup is the new master
        sysrc ifconfig_bge0_alias0="vhid 54 advskew 10 pass xxx alias 192.168.10.15/32" 
        flog "Adapting advskew on the main interface"
        ifconfig bge0 vhid 54 advskew 10
    
        flog "Shutting down the CTLD daemon"
        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