Cluster problems after installing SP1

This is a bit old – but I am still getting questions from people about it so I wanted to get a blog post down.  If you have a cluster with three or more nodes – you may encounter problems with CSV after installing SP1.  If you are seeing any of the following problems:

 

• The Validate SCSI Device Vital Product Data (VPD) test fails. Additionally, you receive an error message that resembles the following:

  Failed to get SCSI page 83h VPD descriptors for cluster disk <number> from <node name> status 2

• The List Potential Cluster Disks storage validation test may display a warning message that resembles the following:
   
  Disk with identifier <value> has a Persistent Reservation on it. The disk might be part of some other cluster. Removing the disk from validation set.

Then you need to download this hotfix: https://support.microsoft.com/kb/2531907

Cheers,
Ben