Importing shared storage in non-exclusive mode to nodes.

[Ra Jose]

Does anybody know if I can import shared storage (volumes) in non-exclusive mode for all nodes in cluster. For e.g. I have 2 nodes that share SAN storage. As per SG manuals, the storage belonging to a pkg has to be imported in exclusive mode. I need to know whether I can do in non-exclusive mode so that both nodes can read/write to the storage. Any thought? Thank you all
Rajos

[Duncan Edmonstone]

Rajos,

From your previous posts I see you have already considered doing this through NFS mounts, so I assume you don't want to know about that method.

The only other way to achieve this is with a clustered volume manager (CVM) and clustered filesystem (CFS). HP do provide this in the form of the Serviceguard Storage Management Suite:

http://h71028.www7.hp.com/enterprise/cache/262609-0-0-0-121.html

This is an additional cost on top of normal Serviceguard.

What exactly are you trying to achieve, there may be another way of doing this.

HTH

Duncan

[Ra Jose]

Thank you Duncan. Yes, I will be implementing nfs pkg using nfs toolkit. I was curious to know about this shared read/write option.

[Geoff Wild]

With standard SG and LVM you can NOT have read/write to the same disks at the same time.

As far as importing - yes, it can be activated on 1 node while you import on another - you just can vgactivate it on th esecond node.

You have to use Cluster File System to have both nodes access the data at the same time.


Rgds...Geoff