Re: Rebooting Xen0

Re: Rebooting Xen0

[Charles Coffing]

Thomas,

Are you building with either "debugger=y" or "debug=y" ?

Currently, if I build with---
cd xen
export debug=y
export debugger=y
make
---then it crashes as you describe.

An ASSERT is failing in spin_lock_irqsave() in printf() when Xen tries
to print the Xen banner.

I just started looking at it, but I suspect it may be related to Keir's
1.1278.1.1 changset.



>>> "Thomas E. Conway-Poulsen" <xen@conwayit.dk> 08/28/04 4:25 AM >>>
Hi Christian,
 
 Sorry for the confusion, I mean that the machine reboots directly after
starting either:
 
 title Xen 1.3(2-0-unstable) / XenoLinux 2.6.8.1
         kernel /boot/xen.gz dom0_mem=131072 com=115200,8n1
         module /boot/vmlinuz-2.6.8.1-xen0 root=/dev/hda2 ro
console=tty0 console=ttyS0
 
 title Xen 1.3(2.0-unstable) / XenoLinux 2.4.27
         kernel /boot/xen.gz dom0_mem=131072 com1=115200,8n1
         module /boot/vmlinuz-2.4.27-xen0 root=/dev/hda2 ro console=tty0
console=ttyS0
 
 It really doesnt make any sense to me, as it worked fine before.
 
 Thomas Conway
 



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Rebooting Xen0

[Thomas E. Conway-Poulsen]

Hej guys,

I had to use my old vmlinux-working kernel since my bk pull yesterday. 
It starts up using the xen.gz file, and doesnt even(cant tell) start 
loading the xen0 module. And changes there that are corrupting the xen 
kernel?

When grub tries to boot, it reboots.

My last update was 27-08-04 at GMT+1 22.

Thomas Conway.


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Re: Rebooting Xen0

[Christian Limpach]

On Sat, Aug 28, 2004 at 10:39:51AM +0200, Thomas E. Conway-Poulsen wrote:
> I had to use my old vmlinux-working kernel since my bk pull yesterday. 
> It starts up using the xen.gz file, and doesnt even(cant tell) start 
> loading the xen0 module. And changes there that are corrupting the xen 
> kernel?
> 
> When grub tries to boot, it reboots.

When you say "It starts up using the xen.gz file", does that mean
you see the output from Xen and then it apparently just sits there,
after Xen tells you that it switched the serial input to DOM0?

Or do you mean that Xen doesn't even start up and the machine
immerdiately reboots, as your last statement would indicate?

> My last update was 27-08-04 at GMT+1 22.

What version did you update from?  Are you using console on the serial
line?  If you updated from a version which had 2.4 as default and you
are using console on the serial line, then you will have to add a
``console=ttyS0'' option to your linux kernel module line in the grub
config file, since 2.6 doesn't output the console messages to all
devices which claim to be consoles, but only to the first one or to
all selected on the kernel command line.

    christian



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Re: Rebooting Xen0

[Thomas E. Conway-Poulsen]

[-- Attachment #1: Type: text/html, Size: 3510 bytes --]

Re: Rebooting Xen0

[Christian Limpach]

> Sorry for the confusion, I mean that the machine reboots directly after
starting either:
> It really doesnt make any sense to me, as it worked fine before.

Which version were you using before (updated when?  2.4/2.6?)  Can you
connect a serial line and check if there's any output?

> title Xen 1.3(2-0-unstable) / XenoLinux 2.6.8.1
>         kernel /boot/xen.gz dom0_mem=131072 com=115200,8n1
>         module /boot/vmlinuz-2.6.8.1-xen0 root=/dev/hda2 ro console=tty0
console=ttyS0

That should be ``com1=115200,8n1'' on the xen kernel line and you also have
to add ``console=com1'' to get the output on the serial line.

     christian



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Re: Rebooting Xen0

[ron minnich]

really trivial question, sorry, ...

how do you folks set up vmware with serial emulation to a unix socket and
have it work? I can't seem to get this to go ... anybody want to explain
this new trick to this old dog? Use short words with not too many 
syllables :-)


thanks

ron



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Re: Rebooting Xen0

[Christian Limpach]

On Sat, Aug 28, 2004 at 12:28:34PM -0600, ron minnich wrote:
> really trivial question, sorry, ...
> 
> how do you folks set up vmware with serial emulation to a unix socket and
> have it work? I can't seem to get this to go ... anybody want to explain
> this new trick to this old dog? Use short words with not too many 
> syllables :-)

I use the program and instructions from
http://l4ka.org/tools/vmwaregateway.php
(found feeling lucky on google with ``vmware serial'')

    christian



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Re: Rebooting Xen0

[ron minnich]

On Sat, 28 Aug 2004, Christian Limpach wrote:

> I use the program and instructions from
> http://l4ka.org/tools/vmwaregateway.php
> (found feeling lucky on google with ``vmware serial'')
> 

thanks, got it. I'll quick either port it to linux or write an equivalent, 
if anyone else wants to know how it goes let me know. 

Sigh, why didn't I just do that. Oh wait, I did, but was not feeling lucky 
:-)

thanks!

ron



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