If you are using the OpenFiler software as a iSCSI Server for Citrix XenServer, you will run into an issue.
XenServer is not able to reconnect to the LUN after you reboot the OpenFiler Server.

There is a problem of activation Xen VG’s within the Openfiler LV.
To resolve the issue you have to change the configuration on your openfiler server:

So, to fix the issue in OpenFiler 2.3 and stop VG activation on the system startup comment the following lines (333-337) in /etc/rc.sysinit

#       if [ -x /sbin/lvm.static ]; then
#               if /sbin/lvm.static vgscan --mknodes --ignorelockingfailure > /dev/null 2>&1 ; then
#                    action $”Setting up Logical Volume Management:” /sbin/lvm.static vgchange -a y -ignorelockingfailure
#               fi
#       fi

 You can find more details in the OpenFiler Forum at: