What do the port letters mean when running gabconfig -a in Veritas InfoScale and Storage Foundation?

Article: 100034056
Last Published: 2023-08-23
Ratings: 1 1
Product(s): InfoScale & Storage Foundation

Problem

The gabconfig -a command returns a list of "ports," as well as the node on which they are running. This article contains a brief description of these ports.
 
Note: For an overview of starting and stopping VCS, SFCFS and SFRAC (Cluster Server, Storage Foundation Cluster File System and Storage Foundation for Oracle RAC) for UNIX & Linux, see https://www.veritas.com/docs/000021819.

Solution

Here is an example of the output of gabconfig -a. The specific ports listed will depend on the configuration and specific version of the product.
 
# gabconfig -a GAB Port Memberships
===============================================================
Port a gen 967901 membership 01
Port b gen 967902 membership 01
Port d gen 967905 membership 01
Port f gen 967910 membership 01
Port h gen 967904 membership 01
Port m gen 967907 membership 01
Port u gen 96790e membership 01
Port v gen 967909 membership 01
Port w gen 96790b membership 01
Port y gen 967908 membership 01

 

Port Descriptions

Port Function
a GAB heartbeat membership
b I/O fencing (designed to guarantee data integrity)
d ODM (Oracle Disk Manager)
f CFS (Cluster File System)
h Veritas Cluster Server communication between GAB and High Availability Daemon (HAD)
Group Lock Manager (GLM) communication for SmartIO VxVM cache coherency.
o VCSMM driver (kernel module needed for Oracle and VCS interface)
q QuickLog daemon
u Cluster Volume Manager (CVM) port for redirecting commands from CVM slaves to CVM master
y Cluster Volume Manager (CVM) port for I/O shipping
v CVM (Cluster Volume Manager)
w Cluster Volume Manager daemons on different nodes communicate with one another using this port, but receive cluster membership information through GAB (port v)

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