Re: [Fedora-xen] Reminder: Fedora 17 virt test day going on right now!

2012-05-04 Thread Gordon McLellan
On Fri, May 4, 2012 at 4:23 AM, Dario Faggioli raist...@linux.it wrote:

 On Thu, 2012-05-03 at 11:04 -0400, Gordon McLellan wrote:
  Greetings,
 
 Hi,

  Is anyone running FC 17 beta as a Dom0 / DomU on Xen 4, on Sandy
  Bridge hardware?
 
 Not yet... I'm planning to do so ASAP.

  I've been trying and trying to get xen going on my new sandy-e system
  and have gotten the hypervisor to load but the dom0 kernel panics
  during boot.
 
 
  I dug up an old copy of FC 15, will try my luck there next.
 
 Never tried FC15 either, but just installing the xen packages in FC16
 brought up a working virtualization environment every time I tried. I'll
 give it a go again (no, I  don't have them installed right now) and let
 you know if that still works for me.

 Regards,
 Dario



Dario,

Yes, 16 is what I meant to type (oops).  I did a minimal install, and
without updating, did a yum install xen, tweaked around with grub.cfg and
the network-scripts a little and boom hypervisor and dom0 up and running,
with VT-d support.

Tried the same thing with 17 again and could not get the dom0 kernel to
boot successfully.

I'm going to buy a serial card for this machine so I can do the serial
console on Xen and get more information. But so far, so good!

Gordon
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Re: [Fedora-xen] Reminder: Fedora 17 virt test day going on right now!

2012-05-04 Thread M A Young

On Fri, 4 May 2012, Konrad Rzeszutek Wilk wrote:


On Fri, May 04, 2012 at 09:36:49AM -0400, Gordon McLellan wrote:


I'm going to buy a serial card for this machine so I can do the serial
console on Xen and get more information. But so far, so good!


You can try to do (on Xen) 'console=vga  vga=text-80x50 guest_loglvl=all loglvl=all 
noreboot
and on the Linux command line: console=hvc0 earlyprintk=xen loglevel=8 debug 
radeon.modeset=0 radeon.modeset=0

That should give you some idea where it is crashing and take a photo.


If you are capturing logging with a photo, it can be helpful to add a 
boot_delay parameter eg. boot_delay=100 to the kernel line, particularly 
if the interesting lines scroll off the top of the screen before you can 
capture them. It does slow the boot down considerably though so you may 
need to adjust the parameter to get the balance right between it being 
slow enough to capture without taking ages to get to the crash.


Michael Young
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Re: [Fedora-xen] Reminder: Fedora 17 virt test day going on right now!

2012-05-04 Thread Gordon McLellan
On Fri, May 4, 2012 at 10:05 AM, M A Young m.a.yo...@durham.ac.uk wrote:

 On Fri, 4 May 2012, Konrad Rzeszutek Wilk wrote:

  On Fri, May 04, 2012 at 09:36:49AM -0400, Gordon McLellan wrote:


 I'm going to buy a serial card for this machine so I can do the serial
 console on Xen and get more information. But so far, so good!


 You can try to do (on Xen) 'console=vga  vga=text-80x50 guest_loglvl=all
 loglvl=all noreboot
 and on the Linux command line: console=hvc0 earlyprintk=xen loglevel=8
 debug radeon.modeset=0 radeon.modeset=0

 That should give you some idea where it is crashing and take a photo.


 If you are capturing logging with a photo, it can be helpful to add a
 boot_delay parameter eg. boot_delay=100 to the kernel line, particularly if
 the interesting lines scroll off the top of the screen before you can
 capture them. It does slow the boot down considerably though so you may
 need to adjust the parameter to get the balance right between it being slow
 enough to capture without taking ages to get to the crash.

Michael Young


Thank you for the tips everyone!   I will retest the FC17 beta as soon as
find another hard drive... having some fun with VT-d right now.

I've been trying vt-d on every new machine I've built or come across at
work, and finally arrived on a home machine that does it, without having to
run a server grade mobo and cpu (pretty close though).

Specs:
Core i7-3820 Sandy Bridge-E cpu 4 core, 8 thread
Asus Sabertooth x79 main board
32gb ddr3-1600 ram
Radeon HD7970 graphics adapter

I'll post up my vt-d success story in a separate thread, but I was grinning
ear to ear when it first started working.

Gordon
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Re: [Fedora-xen] Reminder: Fedora 17 virt test day going on right now!

2012-05-04 Thread Dario Faggioli
On Fri, 2012-05-04 at 13:11 -0400, Gordon McLellan wrote: 
 Specs:
 Core i7-3820 Sandy Bridge-E cpu 4 core, 8 thread
 Asus Sabertooth x79 main board
 32gb ddr3-1600 ram
 Radeon HD7970 graphics adapter
 
 
 I'll post up my vt-d success story in a separate thread, but I was
 grinning ear to ear when it first started working.
 
That is very cool! If you want to put it on the Xen wiki as well
(http://wiki.xen.org/wiki/Main_Page), please feel free to go there and
post an article. Maybe here http://wiki.xen.org/wiki/Category:Tutorial,
or here http://wiki.xen.org/wiki/Category:HowTo, or as a followup of
this http://wiki.xen.org/wiki/Fedora_16_Dom0 ...or wherever you think it
fits. We're really striving for that kind of contribution! :-) 

Regards,
Dario 
-- 
This happens because I choose it to happen! (Raistlin Majere)
-
Dario Faggioli, Ph.D, http://retis.sssup.it/people/faggioli
Senior Software Engineer, Citrix Systems RD Ltd., Cambridge (UK)




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Re: [Fedora-xen] Reminder: Fedora 17 virt test day going on right now!

2012-05-03 Thread Gordon McLellan
Greetings,

Is anyone running FC 17 beta as a Dom0 / DomU on Xen 4, on Sandy Bridge
hardware?  I've been trying and trying to get xen going on my new sandy-e
system and have gotten the hypervisor to load but the dom0 kernel panics
during boot.

I dug up an old copy of FC 15, will try my luck there next.

Regards,
Gordon
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Re: [Fedora-xen] Reminder: Fedora 17 virt test day going on right now!

2012-05-03 Thread Pasi Kärkkäinen
On Thu, May 03, 2012 at 11:04:49AM -0400, Gordon McLellan wrote:
Greetings,
Is anyone running FC 17 beta as a Dom0 / DomU on Xen 4, on Sandy Bridge
hardware?  I've been trying and trying to get xen going on my new sandy-e
system and have gotten the hypervisor to load but the dom0 kernel panics
during boot.
I dug up an old copy of FC 15, will try my luck there next.

You probably should set up a serial console so you can actually capture the 
error/crash logs.

http://wiki.xen.org/wiki/Xen_Serial_Console

-- Pasi

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