RDMs not showing up

[tpagolfnut]

Running VC 4.1.  I have a MSFT two node cluster sharing 4 RDMs. I am having to migrate the nodes to different storage so I am doing it one at a time.  I powered off the second node, removed the RDMs and then migrated the server to the new storage.  Now when I try to add the RDMs back into the guest they aren't showing up as available.  Is there a way to refresh the available LUNs list.  I have tried migrating the guest to a different host but that still isn't helping.  I have done this is the past and I thnk that after a certain amount of time the list finally refreshed but I would like to force it if possible.

Has anyone had this issue before?

[AndreTheGiant]

You can temporally disable RDM LUN filtering:

http://kb.vmware.com/kb/1010513

[a_p_]

You can add a LUN as an RDM only once. At the time it is attached to a VM as a RDM, an RDM mapping file (vmdk) is created. To attach the RDM to the second node, you would choose to add an existing virtual disk and point to this existing mapping file. To move/migrate the mapping file to the other storage, you may need to detach the RDM's from both cluster nodes and select "Delete from disk" when detaching it from the last node. This will only delete the mapping file. After this you should see the LUN in the list of available LUNs for RDMs.

André

PS: For the above procedure (Delete from disk) I assumed, you are using the RDMs in physical mode (no snapshots)!

[tpagolfnut]

Thanks.. I forgot about using the mapping file for the second node.  It shows up in the settings on the second as a "Mapped Raw LUN" so I thinking i pointed both nodes to it.

Thanks again.