the dg with the fecing devices (by default 3 luns) should have dg auto-import flag turned off and the dg should never be imported.
Please follow VCS admin and installation guides to set up cluster fencing.
Sure you can import nyhe dg without rebooting node a.
Is the dg controlled by VCS? If it is, you do not need to manually import the dg on to node b as VCS should be able to bring up the dg on a node b, if VCS is configured properly.
Is the dg a CV...
After split brain i must leave only an node up and running and the other nodes shut down.
<<< Correct (this is the easiest way to prevent data corruption}
Then vxfenclearpre after i stop had and vcs.right?
<<< Correct. Run hastop -all on one node t...
you can find VCS installation and configuration info on https://sort.veritas.com/documents
.VCS I/O fencing is HIGHLY recommended.
you can find the cluster fencing relat5ed info in the user duides below
VCS installation guide
VCS admin gui...