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Re: Python errors when starting machines.

On Thu, 8 May 2008 12:56:59 am Anders Magnusson wrote:
> Environment:
> - NetBSD 4.0 release, kernels XEN3_DOM0 and XEN3_DOMU
> - Xen 3.1.3, from pkgsrc 2008Q1.
> When I try to start a domU, something pukes at me:
> root@snoopy /usr/pkg/etc/xen 59# xm create -c tor
> Using config file "./tor".
> Started domain tor
> Unexpected error: exceptions.OSError
> Please report to xen-devel%lists.xensource.com@localhost
> Traceback (most recent call last):
>   File "/usr/pkg/sbin/xm", line 10, in ?
>     main.main(sys.argv)
>   File "/usr/pkg/lib/python2.4/site-packages/xen/xm/main.py", line 2500, 
> in main
>     _, rc = _run_cmd(cmd, cmd_name, args)
>   File "/usr/pkg/lib/python2.4/site-packages/xen/xm/main.py", line 2524, 
> in _run_cmd
>     return True, cmd(args)
>   File "<string>", line 1, in <lambda>
>   File "/usr/pkg/lib/python2.4/site-packages/xen/xm/main.py", line 1302, 
> in xm_importcommand
>     cmd.main([command] + args)
>   File "/usr/pkg/lib/python2.4/site-packages/xen/xm/create.py", line 
> 1298, in main
>     do_console(sxp.child_value(config, 'name', -1))
>   File "/usr/pkg/lib/python2.4/site-packages/xen/xm/create.py", line 
> 1323, in do_console
>     (p, rv) = os.waitpid(cpid, os.WNOHANG)
> OSError: [Errno 10] No child processes

Looking on the net I found an exact duplicate of the python 'traceback'.


But the poster seemed to think it was distro specific.

Other semi-related posts involve the attempt at using hvm when none exists.

For anyone to replicate your environment, they're going to need a few more 
details like:

grub boot params
domu config
kernel versions
xm info

But mainly the kernel versions and domu config. We can only assume you used 
the release versions.

Seeing as this problem has never been posted before (to my knowledge) and it's 
highly unlikely 4.0 release hasn't been tested ... maybe it's to do with the 
pkgsrc and the version of xentools.

Manuel, do you know of any incompatibilities with the latest 
xentools/xen-kernel and the 4.0 release kernels?


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