We've been using Microsoft clustering under 3.5 Update 1 with no issues. We recently upgraded to 3.5 Update 2, and now it no longer works. The release notes mention that you need to make a VI client change, as well as edit a file on each ESX server as well. Unfortunately, the instructions they give you for editing the file are incorrect, which is what I suspect is the problem.
The release notes are here: http://www.vmware.com/support/vi3/doc/vi3_esx3i_i_35u2_vc25u2_rel_notes.html
Look at the section called: " Virtual Machines Cannot Share a Raw LUN By Using Two Different RDM Files Unless RDM Filters Are Turned Off"
The instructions for editing config.xml are wrong. If I place that section as it is shown in the config.xml and restart mgmt-vmware, then VirtualCenter loses connectivity to the host. I suspect that is because the <plugins> section is defined twice. so then I tried just adding the <solo> sections, and also just the <rdmfilter> sections. Neither of those work as well.
Has anyone here made this work correctly?
Did you also make the change in the VI client? This instructions say to make a change in the VI Client advanced settings.
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Yes, I made the change in VI client. The change appears to just allow you to see the previously mounted RDMs when you try to add them to a second VM. Clustering in VMWare has always been a cluster$%&^, but this new issue takes the cake. Why they would break clustering by default, and then include the wrong instructions for fixing it, is beyond me.