Virtual TapeServer 8.0 Supplemental Installation Guide

10 | Installing GFS
d. From the command line, enter the following:
tail -f /var/log/messages
Here is an example of the output:
May 15 19:06:19 VTS_svr fence_node[28881]: Fence of "VTS_svr2" was
successful
18. Test fencing. In a separate window, enter the following command to view for fencing
messages in the system log file:
tail -f /var/log/messages
Here is an example of the messages:
May 15 19:10:25 VTS_svr fenced[10804]: VTS_svr2 not a cluster member
after 0 sec post_fail_delay
May 15 19:10:25 VTS_svr fenced[10804]: fencing node "VTS_svr2"
May 15 19:10:26 VTS_svr fenced[10804]: fence "VTS_svr2" success
19. If EMS will be used, configure EMS as described in the EMS chapter of the Configuration
Guide.
To power up a GFS cluster after installation, refer to the GFS appendix in the Configuration
Guide.
Troubleshooting
This section describes how to verify the installation and troubleshoot any issues.
1. Verify that the appropriate services are enabled and started by entering the following
commands:
chkconfig cman on && service cman restart
chkconfig clvmd on && service clvmd restart
chkconfig ricci on && service ricci restart
Note that these commands also restart fencing and deactivate the pool.
2. Verify that logical volumes cannot be seen by attempting to mount a logical volume
(/dev/gfsvg1/gfslv1 and VAULT10 are example values):
mount /dev/gfsvg1/gfslv1 /VAULT10
Here is an example of the output if the logical volume is not visible:
mount: special device /dev/gfsvg1/gfslv1 does not exist
3. Using the luci web interface, ensure that nodes are not fenced.
4. Enter the following command to activate all known volume groups in the system:
vgchange -ay
Here is an example of the output:
1 logical volume(s) in volume group "gfsvg1" now active