Re: [Xen-users] dom0 unable to launch domU

["Olivier B." <xen.list@xxxxxxxxx>]

Hi Grahame, thanks for your answer.

As I wrote in my last message, I found the cause of the problem : kernel 
2.6.28 & 2.6.29 in pv_ops don't work on Xeon E5405 stepping 10, but 
works on Xeon E5405 stepping 6 ; it is one of the two difference between 
my servers (the other is the RAID controller).
> http://lists.xensource.com/archives/html/xen-bugs/2009-04/msg00005.html

I can identify my problem by adding "earlyprintk=xen" on the kernel 
cmdline, and so have error messages.
So I have to upgrade to a 2.6.30 kernel or stay on the Debian 2.6.26 
(which works too).
Olivier

Grahame Kelly a écrit :
> Hi Olivier.
>
> Are you sating:
>
> That you are able to create and run DomU's on one machine (lets call 
> this machine 'A')
> but your unable to create any DomU's on the seemingly problematic 
> machine (let's call
> this machine 'B')?
>
> If so, then there either is something your missed in building the 
> B:Dom0, or it is as you
> say "Software is same on both dom0, and hardware is near the same" 
> that there must
> be some inhibiting issue with B:Dom0.
>
> Concentrating on Machine B:
>
> Have you run applications on Machine B without issues before-hand (by 
> that I mean
> Machine B works without any memory problems or hangs and passes 
> executables like
> the standard Linux install with > 48 hrs operation, X86 memory tests 
> at least >5 passed,
> and your confident there is no underlying h/w problem on machine B 
> motherboard or BIOS)?
> Have you done a comparison between the A:Dom0 (xm dmesg) and the 
> B:Dom0 (xm dmesg) output
> and see what you can gleam from that (other than the obvious hardware 
> differences)?
> I assume you using separate physical drives for the file systems on 
> each machine and that
> your NOT using some sort of NAS, NFS or similar to handle DomU's storage?
>
> Apart from the above:
>
> 1> Try reinstalling from starch Xen, but only selecting the most 
> minimal install, with only
> network administration added.
>
> 2> Maybe ensure that machine B, has a up to date BIOS, and that your 
> tested it in line
> with what I have suggested above.
>
> If your unsuccessful in getting a positive result send me a copy of 
> the "dmesg" outputs,
> a copy of "/proc/cpuinfo", "/proc/interrupts", "/proc/meminfo"
> from both machines, to my email address, and I'll see if I can find 
> anything unusual.
> Cheers.
> Grahame
>
>
>
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