[Xen-users] dom0 unable to launch domU

[Grahame Kelly <grahame@xxxxxxxxxxxxxx>]

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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