Re: [Xen-devel] Reboot failure in Xen 4.2.0

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2012-11-12 at 16:44 +0000, Rob Lampe wrote:
> Hi,
> 
> I am having an issue where a small percentage of the time, rebooting a
> VM from the VM does not actually work.
> 
> Xen Version: 4.2.0
> OS: Debian 6.0
> Kernel: 3.2.30
> 
> Note, we are still using xend instead of xl. Could that be the problem?

>From the trace this certainly appears to be a xend problem. I'm afraid
that rather limits the time people here are going to be able to spend
investigating.

> [2012-11-12 14:47:20 2381] DEBUG (XendDomainInfo:2499) 
> XendDomainInfo.constructDomain
> [2012-11-12 14:47:20 2381] ERROR (XendDomainInfo:488) VM start failed 
> Traceback (most recent call last):
>   File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 
> 473, in start
>     XendTask.log_progress(0, 30, self._constructDomain)
>   File "/usr/lib/python2.6/dist-packages/xen/xend/XendTask.py", line 209, in 
> log_progress
>     retval = func(*args, **kwds)
>   File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 
> 2576, in _constructDomain
>     self._recreateDom()
>   File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 
> 1730, in _recreateDom
>     complete(self.dompath, lambda t: self._recreateDomFunc(t))
>   File "/usr/lib/python2.6/dist-packages/xen/xend/xenstore/xstransact.py", 
> line 364, in complete
>     if t.commit():
>   File "/usr/lib/python2.6/dist-packages/xen/xend/xenstore/xstransact.py", 
> line 41, in commit
>     rc = xshandle().transaction_end(self.transaction, False)
> Error: (2, 'No such file or directory')

I guess this is the issue. If you want to try and track it down I'd
suggest adding additional logging at the various locations pointed to by
this callchain to try and identify what it is doing and what is not
present ("No such file or directory").

Ian.


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