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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 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) |
m | 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) |