Veritas Storage Foundation 5.1 SP1 Cluster File System Installation Guide (5900-1510, April 2011)

Note: Whenever coordinator disks are used as coordination points in your I/O
fencing configuration, you must create a disk group (vxfendg). You must specify
this disk group in the /etc/vxfenmode file.
See “Setting up coordinator disk groups” on page 156.
The customized fencing framework also generates the /etc/vxfentab file which
has security setting and the coordination points (all the CP servers and disks from
disk group specified in /etc/vxfenmode file).
To configure server-based fencing on the SFCFS cluster manually
1
Use a text editor to edit the following file on each node in the cluster:
/etc/rc.config.d/vxfenconf
You must change the values of the VXFEN_START and the VXFEN_STOP
environment variables to 1.
2
Use a text editor to edit the /etc/vxfenmode file values to meet your
configuration specifications.
If your server-based fencing configuration uses a single highly available CP
server as its only coordination point, make sure to add the single_cp=1 entry
in the /etc/vxfenmode file.
The following sample file output displays what the /etc/vxfenmode file
contains:
See “Sample vxfenmode file output” on page 174.
3
After editing the /etc/vxfenmode file, run the vxfen init script to start fencing.
For example:
# /sbin/init.d/vxfen start
Sample vxfenmode file output
The following sample file output displays
#
# vxfen_mode determines in what mode VCS I/O Fencing should work.
#
# available options:
# scsi3 - use scsi3 persistent reservation disks
# customized - use script based customized fencing
# disabled - run the driver but don't do any actual fencing
#
Configuring SFCFS for data integrity
Setting up server-based I/O fencing manually
174