ADSM-L

Question about Veritas Cluster and filespace name

2002-12-11 07:08:59
Subject: Question about Veritas Cluster and filespace name
From: Peter Bjoern <pebjn AT WMDATASDC DOT DK>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 11 Dec 2002 12:45:24 +0100
Hi

We have a situation with a Veritas cluster installed on two Win2000
servers.
The physical servers are called J2P-CLUSTER101 and J2P-CLUSTER102.
There is a virtual server defined with the name WEB1.

Each physical server has it's own C: drive which is backed up via a
schedule
that specifies 'C:' and 'systemobject' on the domain statement in the
option file.
The C: filespaces are given the names \\J2P-CLUSTER101\C$ and
\\J2P-CLUSTER102\C$ respectively.  This is all OK.

There is a shared drive X: which is associated with the WEB1 resource and
moves with WEB1 between the two physical servers so that it is available
either on J2P-CLUSTER101 or J2P-CLUSTER102.

X: is backed up from a virtual node defined in TSM called WEB1 and via a
separate TSM scheduler
service with an option file that  specifies X: on the domain statement.

If this had been a Microsoft Cluster installation, we would have specified
'CLUSTERNODE YES' in the optionfiles to make TSM name the X: filespace
with the virtual clustername (WEB1) so that it would have been named
\\WEB1\X$ regardless of which physical server it was backed up from.

However, CLUSTERNODE does not work with a Veritas cluster, so the result is
that we get two parallel filespaces named  \\J2P-CLUSTER101\X$ and
\\J2P-CLUSTER101\X$ because X: sometimes resides on J2P-CLUSTER101
and some times on J2P-CLUSTER102.

>From previous postings on this list I get the impression that there is
nothing
we can do to solve this, but I just want to be sure if this is true....

How are other people who are running Veritas clusters and TSM solving this
?

This is a bad situation and one could fear (from a TSM person point of
view) that
it could pave the way for the introduction of Veritas backup software at
the site.

If CLUSTERNODE cannot easily be enhanced to support Veritas clusters as
well, all we would need would be a new statement in the option file,
perhaps called
MACHINENAME or so, where we could specify 'MACHINENAME WEB1' in the
optionfile and then have TSM use this name is the filespacing naming
process.

Regards

Peter