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[Xen-API] XCP 1.1 xs-tools Version Override Problem

  • To: xen-api@xxxxxxxxxxxxxxxxxxx
  • From: brooks@xxxxxxxxxxx
  • Date: Sat, 22 Oct 2011 08:42:41 -0700 (PDT)
  • Cc:
  • Delivery-date: Sat, 22 Oct 2011 08:43:10 -0700
  • List-id: Discussion of API issues surrounding Xen <xen-api.lists.xensource.com>

The version override feature allows XenCenter to function nicely with XCP.1.x. Unfortunately xs-tools doesn't share the love. XCP 1.1 includes xs-tools-1.1 but thats not the version XCP expects when masquerading as XenServer 5.6 fp1/sp2. It expects xs-tools-5.x and it's unhappy about the version mismatch. It's so unhappy that it's preventing live migrations:

VM = CentOS 6 x86_64 PV with:

     - xe-guest-utilities-1.1.0-651.x86_64.rpm
     - xe-guest-utilities-xenstore-1.1.0-651.x86_64.rpm

installed from xs-tools-1.1.0.iso

[root@xenc2n1 ~]# xe vm-migrate vm=2b038b1d-62bc-b4de-68c2-8ef1cfa8f9d3 live=true host-uuid=2394d5b3-5b47-4a9b-9493-678120d7a576 You attempted an operation on a VM which requires a more recent version of the PV drivers. Please upgrade your PV drivers.
vm: 2b038b1d-62bc-b4de-68c2-8ef1cfa8f9d3 (i-3-12-VM)

I don't suppose there's an xs-tools version override hack we can apply :-).

I found this work item under XCP 1.1 on the wiki XCP Roadmap page:

     23 Jun 11 | Mike McClurg | Remove PV-driver migration checks for PV
     domains; check for presence in HVM domains

I suspect that didn't get done, or isn't working. What functions do the xe-guest-utilities provide? Without them installed you don't see any memory statistics under the "Performance" tab, but are they really needed for PV based VMs?

What we need is XCP support in XenCenter instead of a patch to XCP to make it appear as something it's not. Even though XenCenter is a Windows application it's the best configuration, management, and monitoring application available for XenServer and XCP.

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