Thanks for the reply. This is not happening on two servers in the cluster. On one of the servers I did go through the process you mentioned, and this is the end result. It CentOS does not boot properly and as you can see the lsblk result shows missing mountpoints.
http://www.redcloudtech.ca/images/EndResult.jpg
The 3 filesystems that are referenced by uuid were missing from the server because those are hot swapable drives that I pulled them out temporarily in an attempt to remove them from the equation. I just put them back in and the reboot did get a little further, but seems to have stopped (hangs) at the CentOS splash screen.
Looks to me like that server node has had the main drive fail???
Again, all suggestions appreciated.
Ed