Symantec 5 manual Galaxy Nebula

106Verifying the VCS installation

About the LLT and GAB configuration files

The file llthosts is a database that contains one entry per system. This file links the LLT system ID (in the first column) with the LLT host name. This file is identical on each node in the cluster.

For example, the file /etc/llthosts contains the entries that resemble:

0galaxy

1nebula

■The /etc/llttab file

The file llttab contains the information that is derived during installation and used by the utility lltconfig(1M). After installation, this file lists the private network links that correspond to the specific system.

For example, the file /etc/llttab contains the entries that resemble:

set-node galaxy set-cluster 2

link eth1 eth1 - ether - - link eth2 eth2 - ether - -

If you use MAC address for the network interface, the file /etc/llttab contains the entries that resemble:

set-node galaxy

set-cluster 2

link eth1 eth-00:04:23:AC:12:C4 - ether - -

link eth2 eth-00:04:23:AC:12:C5 - ether - -

The first line identifies the system. The second line identifies the cluster (that is, the cluster ID you entered during installation). The next two lines begin with the link command. These lines identify the two network cards that the LLT protocol uses.

Refer to the llttab(4) manual page for details about how the LLT configuration may be modified. The manual page describes the ordering of the directives in the llttab file.

■The /etc/gabtab file

After you install VCS, the file /etc/gabtab contains a gabconfig(1) command that configures the GAB driver for use.

The file /etc/gabtab contains a line that resembles:

/sbin/gabconfig -c -nN

The -coption configures the driver for use. The -nNspecifies that the cluster is not formed until at least N nodes are ready to form the cluster. By default, N is the number of nodes in the cluster.