Virtual TapeServer 6.03.41 Installation Guide

92 | Configuring and Maintaining GFS for Virtual TapeServer
Configuring GFS
To configure GFS, contact your authorized service and support representative to request
assistance.
No configuration is required on the VTS servers other than configuring the
ems_InterSystemCommunication_hosts parameter in the VTS configuration file. See
page 66 for a description of this parameter. An Ethernet connection is required between each
Linux server (VTS servers and external disk resources). All servers must be connected by
Fibre Channel to a disk array. An additional ProLiant server is required to act as a “tie-
breaker” when the systems compare the accuracy of their file-system data. The switch and
network cables do not need to be Gigabit Ethernet. Refer to the Linux server documentation
for more information about configuring GFS.
Starting GFS
If GFS is properly installed and configured, the VTS startup process automatically starts
GFS. If GFS partitions are not visible as vaults in the VTS interface, you may need to execute
a start command from a console or Telnet prompt. Complete the following steps to start GFS:
1. Log in to the VTS operating system as root.
2. Assemble all GFS pools on the VTS system. This command sets configuration parameters
to allow the file system to be mounted:
pool_assemble -a
3. Start the cluster configuration daemon. (ccsd is part of the Cluster Configuration System,
CCS.) The daemon imports cluster configuration files for other cluster systems. Run this
command on each VTS system that is part of the cluster. This ensures that the GFS
services are running before attempting to mount the file system.
service ccsd start
4. Start the Grand Unified Lock Manager. lock_gulmd is the lock manager for GFS that
ensures that the file system is not in use before mounting.
lock_gulmd
5. Mount all partitions in the /etc/fstab/. The fstab file must have been previously
configured for GFS.
mount -a
The following example of the /etc/fstab file shows Vault10 configured as a GFS partition:
LABEL=/VAULT00 /VAULT00 ext3 defaults 1 3
/dev/pool/pool_gfs /VAULT10 gfs defaults 1 2
Ensure the mount points to an existing pool in /dev/pool, which is where the GFS pool is
defined when configured. GFS mount points start at Vault10.