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“cannot change the host configuration” August 14, 2009

Posted by jamesisaac in Uncategorized.
Tags: ,

Here’s a bizarre problem I encountered with vSphere and VMFS.

I have an iSCSI SAN presenting 5 LUNs to vSphere. I set up the first server, added the LUNs, formatted and named them, and all is well. I added the second server, and could only add two of the 5 LUNs. With the other three, I could see the LUN in the “add storage” configuration page, but after going through the wizard, vSphere errored out with “cannot change the host configuration”. There’s not a lot of documentation on this error, but I found the secret here – it’s a bug in Virtual Center. Or at least it appears to be.

The solution is to use the vSphere client to connect directly to the host, not Virtual Center, and add the LUNs there. Works perfectly and they show up in Virtual Center as you’re adding them.



1. patchezz - November 22, 2009

Great solution! Works fine for me. But what a weird problem…

2. James Gray - March 17, 2010

Thanks for this solution. Very helpful!

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