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2 Intern
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172 Posts
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53154
April 17th, 2015 10:00
VSS Control volume error with HIT/ME
I finally got around to setting up MPIO for an NTFS data volume on a Windows 2008 R2 vm to my EQ group, but I'm getting an error "VSS control volume is not accessible from this host". On the EQ, I have VSS access policy set for IP to accept the whole subnet. The error notifications from the EQ includes "CHAP user grpadmin authentication failed", but I'm only using the IP access, not chap. CHAP is optional, right? It's a private subnet on internal switches. Also, in the PS Group Access, "Use Chap credentials for iscsi discovery" is unchecked.
In the MPIO host view, the iscsi connections shows "2 ok, 2 bad." I only have 2 nics on this vm.
Edit: Also, in the group access window, the VDS/VSS access has a green check mark.
trnc
2 Intern
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172 Posts
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April 17th, 2015 11:00
Aha, so even though the "Use chap credentials" is unchecked, it still tries to use it. Gnarly. I checked the box, removed the credentials, unchecked it again and saved. No more errors.
As always, thanks. Whatever Dell is paying you, it's not enough.
trnc
2 Intern
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172 Posts
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April 17th, 2015 12:00
The change that fixed the error wasn't on the EQ, it was in the MPIO settings in the HIT on the VM. The VDS/VSS access was green, which I guess just means "configured" rather than "success". When it is highlighted, the Group VDS/VSS Access Settings window is displayed. Knowing what I know now, I realize that the CHAP checkbox is unrelated to the VDS settings.