I'm standing up a Windows 2012 R2 cluster in a VMWare environment. The 3 cluster members are all on the same subnet, built from the same image, and basic setup through failover cluster manager went fine.
I have two iscsi luns, call them B and T. They are both presented to all 3 VM's, I verified that all 3 VM's can see both luns in disk management. The intention was to present them both as cluster shared volumes so all cluster members can use them.
Basically I can never get all 3 nodes to mount both luns at the same time. The closest I've gotten was all 3 seeing B and 2 seeing T. When the lun doesn't mount, it still creates an entry under c:\clusterstorage, but the icon is a folder instead of a mount or link. Doing a dir command verifies that they are folders, but get-clustersharedvolume on the non-mounting node shows both as online.
I enabled the MPIO feature and installed KB3172614 (roll-up update for clustering). Multiple reboots, no change.
Several technet articles said to check the networks and make sure client for MS networks and file/print sharing is enabled. It was. They said to make sure SMB was allowed; I checked the firewall and manually checked port 445 with telnet between the 3 cluster members for good measure.
Other technet articles said that if one of the networks presented to the cluster is a storage network, set that network so that no cluster traffic goes over it. Did that, no change.
Failover cluster manager isn't reporting any errors. Nothing obvious in the event log. What am I missing??