Xen devel - Dec 2013 - Crashing with Xen (Debian Wheezy) 4.1 (deb) and 4.4 (source)

Hi,

	I have a system (AMD FX 8320 w/8GB RAM) that I am trying to get working 
with Xen. The system is installed with Debian Wheezy (7.2). I have used the 
pre-built xen packages and followed the instructions in the Debian Xen wiki:

https://wiki.debian.org/Xen

	I get a crash (relevant kernel panic attached) very soon after boot on 
the Debian Xen 4.1 version using the stock kernel (3.2.0-4-amd64).
	I decided to remove the xen debian packages, make my own kernel (3.2.52) 
with the Xen virtualization enabled and try that one. Normally the machine 
runs fine with it (i.e. as a regular machine). I compiled the Xen 4.4 from 
source and it compiled and installed without problems. When enabling the Xen 
kernel (via the same method as Debian - I kept the grub script 
/etc/grub.d/08_linux_xen ) I can boot Xen 4.4.

	I get a crash AGAIN (and unfortunately I can find no log of it, but the 
oops on the screen talked about kernel paging request again).

	Any hints on what I should look at? This is just without any VMs 
configured at all, just trying to get a stable Dom0 so I can even consider 
using Xen.

	Thanks in advance,

	Derek



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On 12/03/2013 09:50 AM, Derek Piper wrote:
> 	Hi,
>
> 	I have a system (AMD FX 8320 w/8GB RAM) that I am trying to get working
> with Xen. The system is installed with Debian Wheezy (7.2). I have used the
> pre-built xen packages and followed the instructions in the Debian Xen
wiki:
>
> https://wiki.debian.org/Xen
>
> 	I get a crash (relevant kernel panic attached) very soon after boot on
> the Debian Xen 4.1 version using the stock kernel (3.2.0-4-amd64).
> 	I decided to remove the xen debian packages, make my own kernel (3.2.52)
> with the Xen virtualization enabled and try that one. Normally the machine
> runs fine with it (i.e. as a regular machine). I compiled the Xen 4.4 from
> source and it compiled and installed without problems. When enabling the
Xen
> kernel (via the same method as Debian - I kept the grub script
> /etc/grub.d/08_linux_xen ) I can boot Xen 4.4.
>
> 	I get a crash AGAIN (and unfortunately I can find no log of it, but the
> oops on the screen talked about kernel paging request again).
>
> 	Any hints on what I should look at? This is just without any VMs
> configured at all, just trying to get a stable Dom0 so I can even consider
> using Xen.
Have you tried running with a newer kernel?

There is a fair number of errors prior to the crash and it may also help
booting more verbosely (e.g. add ''debug loglevel=8'' to your
vmlinuz boot
like) to better understand where they are coming from.

-boris

What version of kernel is recommended? I went for the latest in the 3.2 
line (3.2.52 at the time) since I didn''t want to worry about other
system
dependencies messing anything up. I could probably go to the 3.4 line if 
that''s a good thing?

	I will certainly try the debug line and report back after it dies again.


On Tuesday, December 03, 2013 11:36:17 AM Boris Ostrovsky
wrote:
> On 12/03/2013 09:50 AM, Derek Piper wrote:
> > 	Hi,
> > 	
> > 	I have a system (AMD FX 8320 w/8GB RAM) that I am trying to get
working
> > 
> > with Xen. The system is installed with Debian Wheezy (7.2). I have
used
> > the pre-built xen packages and followed the instructions in the Debian
> > Xen wiki:
> > 
> > https://wiki.debian.org/Xen
> > 
> > 	I get a crash (relevant kernel panic attached) very soon after boot
on
> > 
> > the Debian Xen 4.1 version using the stock kernel (3.2.0-4-amd64).
> > 
> > 	I decided to remove the xen debian packages, make my own kernel
(3.2.52)
> > 
> > with the Xen virtualization enabled and try that one. Normally the
> > machine runs fine with it (i.e. as a regular machine). I compiled the
> > Xen 4.4 from source and it compiled and installed without problems.
When
> > enabling the Xen kernel (via the same method as Debian - I kept the
grub
> > script
> > /etc/grub.d/08_linux_xen ) I can boot Xen 4.4.
> > 
> > 	I get a crash AGAIN (and unfortunately I can find no log of it, but
the
> > 
> > oops on the screen talked about kernel paging request again).
> > 
> > 	Any hints on what I should look at? This is just without any VMs
> > 
> > configured at all, just trying to get a stable Dom0 so I can even
> > consider using Xen.
> 
> Have you tried running with a newer kernel?
> 
> There is a fair number of errors prior to the crash and it may also help
> booting more verbosely (e.g. add ''debug loglevel=8'' to
your vmlinuz boot
> like) to better understand where they are coming from.
> 
> -boris
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
-- 
Derek Piper - dcpiper@indiana.edu - (812) 855 5560
System Administrator / Informatics Specialist
Molecular Structure Center (IUMSC), Chemistry
Indiana University, Bloomington, Indiana
http://www.iumsc.indiana.edu/

On 12/03/2013 11:55 AM, Derek Piper wrote:
> 	What version of kernel is recommended? I went for the latest in the 3.2
> line (3.2.52 at the time) since I didn''t want to worry about other
system
> dependencies messing anything up. I could probably go to the 3.4 line if
> that''s a good thing?
I was thinking of something like 3.12 (from kernel.org). Unless you have
some out-of-tree drivers I don''t see how you can mess up your system.

But if you can''t, then adding those two parameters to your existing
boot
would still be useful. And output of ''xl dmesg'' is also good
to have.

-boris
>
> 	I will certainly try the debug line and report back after it dies again.
>
>
> On Tuesday, December 03, 2013 11:36:17 AM Boris Ostrovsky wrote:
>> On 12/03/2013 09:50 AM, Derek Piper wrote:
>>> 	Hi,
>>> 	
>>> 	I have a system (AMD FX 8320 w/8GB RAM) that I am trying to get
working
>>>
>>> with Xen. The system is installed with Debian Wheezy (7.2). I have
used
>>> the pre-built xen packages and followed the instructions in the
Debian
>>> Xen wiki:
>>>
>>> https://wiki.debian.org/Xen
>>>
>>> 	I get a crash (relevant kernel panic attached) very soon after
boot on
>>>
>>> the Debian Xen 4.1 version using the stock kernel (3.2.0-4-amd64).
>>>
>>> 	I decided to remove the xen debian packages, make my own kernel
(3.2.52)
>>>
>>> with the Xen virtualization enabled and try that one. Normally the
>>> machine runs fine with it (i.e. as a regular machine). I compiled
the
>>> Xen 4.4 from source and it compiled and installed without problems.
When
>>> enabling the Xen kernel (via the same method as Debian - I kept the
grub
>>> script
>>> /etc/grub.d/08_linux_xen ) I can boot Xen 4.4.
>>>
>>> 	I get a crash AGAIN (and unfortunately I can find no log of it,
but the
>>>
>>> oops on the screen talked about kernel paging request again).
>>>
>>> 	Any hints on what I should look at? This is just without any VMs
>>>
>>> configured at all, just trying to get a stable Dom0 so I can even
>>> consider using Xen.
>> Have you tried running with a newer kernel?
>>
>> There is a fair number of errors prior to the crash and it may also
help
>> booting more verbosely (e.g. add ''debug loglevel=8''
to your vmlinuz boot
>> like) to better understand where they are coming from.
>>
>> -boris
>>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xen.org
>> http://lists.xen.org/xen-devel