0x80041002 Error while adding host to NLB Cluster

We were getting error 0x80041002 while adding host to a NLB cluster. After making some research I recognised that apart from being a NLB specific error this was related with WMI repositories.

As we started to have this error after a power failure, recreating WMI repositories made sense. In order to fix this error :

- Stop WMI service.
- Move contents of %windir%\system32\wbem\repository to a temp folder (if Windows doesnt allow do this in safe mode)
- Go to command prompt. Under %windir%\system32\webm execute :

mofcomp cimwin32.mof
mofcomp wlbsprov.mof
mofcomp nlbmprov.mof

 - Start the WMI service and try the NLB operation again.

Windows 2008 Failover Clustering and HP EVA Storage

If you are using HP EVA and getting the below error during the WCS validation phase in Windows 2008 :


Failed to read drive layout of Cluster disk 0 from node ****, status 21
Cluster Disk 0 does not support Persistent Reservation
Test failed. Please look at the test log for more information

Make sure Windows LH Host Mode is configured for your LUN. Below article is a guidance for Win2k8 and HP EVA config :

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01764063/c01764063.pdf

Page 17 :

Configuring EVA host connections

Make sure the Windows LH Host mode is enabled for each node on the Enterprise Virtual Array
(EVA) through command view. Depending on what command view you have installed, if in the drop-
down there is no "Microsoft Windows LH" then choose custom and type in the custom type field the
following HEX number 00000004198009A8 (Figure 1). If the wrong connection type is configured,
you cannot share the disks between the cluster nodes and the cluster check will fail with a non-SCSI-3
compliant message.