[Xen-users] reboot hangs

[Miles Fidelman <mfidelman@xxxxxxxxxxxxxxxx>]

Hi Folks,

I originally started thinking this was a kernal issue, but now I'm 
wondering if it's a hypervisor issue, so...
 I have an old tower machine - a homebrew that I use as a sandbox.


Just loaded it up with a copy of Debian squeeze (amd_64), and the latest 
xen package  - works fine, but...
- shutdown -h works just fine
- reboot goes down, gives the console message "restarting system", then 
hangs
On an earlier installation (Lenny, x86 install) adding "reboot=bios", to 
the Linux Command Line options, solved the problem (suggestive of a 
kernal/acpi issue).
This time around - 64bit image (amd64), squeeze, none of the 
reboot=[....] parameters seem to make a difference.  (I note that the 
Debian installer documentation indicates that reboot=bios only works 
with x86 images).
I also note that the system will SOMETIMES reboot properly, particularly 
if its been running for a while - suggesting that perhaps it only looks 
like the problem is in the kernel boot process, but rather in something 
else that's running at a very low level.... like the Xen hypervisor.
So.... Any suggestions?  Any diagnostic suggestions to help narrow down 
where the hang is occurring?  Other thoughts?
Thanks!

Miles Fidelman

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