VCS : Configure GAB manually
VCS uses the Group Membership Services/Atomic Broadcast (GAB) protocol for cluster membership and reliable cluster communications. GAB has two major functions.
It handles the following tasks:
- Set up an /etc/gabtab configuration file on each node in the cluster using vi or another editor. The following example shows an /etc/gabtab file:
/sbin/gabconfig -c -nNWhere the -c option configures the driver for use. The -nN option specifies that the cluster is not formed until at least N systems are ready to form the cluster. Symantec recommends that you set N to be the total number of systems in the cluster.
Warning: Symantec does not recommend the use of the -c -x option for /sbin/gabconfig. Using -c -x can lead to a split-brain condition.
- Edit the following file on each node in the cluster to change the values of the GAB_START and the GAB_STOP environment variables to 1:/etc/default/gab
Hi.This is krishna..I read somewhere that we can give the command gabconfig -c -x to solve if there is GAB problem or HAD problem in the output of gabconfig -a. But here Symantec does not recommend the use of the -c -x option for /sbin/gabconfig. Using -c -x can lead to a split-brain condition. Finally my question is whether we can use this command or not if we have a problem with gabconfig output..ill wait for your reply..
hi Krishna, the warning is only meant to not to use the manual seeding when the llt status is not good. otherwise it will force the cluster for split brain because of failure in heartbeats.
Thanks lot Ramdev..Could you pls help me to recover the private region in vxvm if it was corrupted..
Hi Krishna, if you are looking for diskgroup level recovery, the below post might help you.
http://mentorsup.com/blog/2012/03/recovery-of-diskgroup-in-vxvm-veritas-volume-manager/