Issue #2169 has been reported by wyvern.

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Bug #2169: xen domu/dom0 fact broken on new xen kernels
http://projects.reductivelabs.com/issues/2169

Author: wyvern
Status: Unreviewed
Priority: Normal
Assigned to: 
Category: 
Target version: 
Complexity: Unknown
Keywords: 


(see #1558 too)

I'm running 2.6.26 dom0 and domU under Xen.

On the host _both_ /proc/sys/xen/independent_wallclock and 
/proc/xen/capabilities exist, on the guest, neither exist.

I can't see anything else under /proc/ on DomU, however /sys/bus/xen exists on 
both (/sys/bus/xen-backend exists on the dom0 but I believe this could also 
exist in DomUs providing devices to other domUs).

I now use this snippet of code:
<pre>
    # new Xen domains have this in dom0 not domu :(
    if FileTest.exists?("/proc/sys/xen/independent_wallclock")
      result = "xenu"
    end
    if FileTest.exists?("/sys/bus/xen")
      result = "xenu"
    end
    if FileTest.exists?("/proc/xen/capabilities")
      txt = File.read("/proc/xen/capabilities")
      if txt =~ /control_d/i
        result = "xen0"
      end
    end
</pre>

without this, the dom0 was reported as xenu and the domUs were not reported as 
being under xen at all


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