Xen 2.0 deployment recommendation

Xen 2.0 deployment recommendation

[Ed Espino]

Xen-devel,

Could someone please recommend a starting Linux distribution of least
resistance for deploying Xen 2.0.  I am not limited to any one
distribution.  I have encountered various issues (recorded below) with
Red Hat Enterprise Linux 3 and Fedora Core 2 distributions that are
impeding me from performing a comparison of Xen 2.0 to VMWare GSX
Server.

Regards, 
-=e

Issues encountered:
----------------------------------------------------------------------

  Linux Distro: Red Hat Enterprise Linux 3
  Kernel: 2.4.21-15.EL
  
  Symptom: When booting Xen 2.0 binary distribution the following
  error message is received "Kernel panic : No init = found.  Try
  passing init=3D option to kernel". 

----------------------------------------------------------------------

  Linux Distro: Fedora Core 2 (2.6.5-1.358smp)
  Built Xen 2.0 kernel: 2.6.9-xen0

  Symptom: When booting 2.6.9 based kernel built with the Xen 2.0
  source distribution the following error messages are repeatedly
  received.  The system boots but no modules are loaded (lsmod):

    Nov  9 14:38:28 sacramento modprobe: FATAL: Could not load
/lib/modules/2.6.9-xen0/modules.dep: No such file or directory 

----------------------------------------------------------------------




Ed Espino
SpikeSource,Inc.
email: eespino@spikesource.com
cell: 925.437.3734
home: 925.831.9820 
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Re: Xen 2.0 deployment recommendation

[Robert Edmonds]

Ed Espino wrote:
> Could someone please recommend a starting Linux distribution of least
> resistance for deploying Xen 2.0.  I am not limited to any one
> distribution.  I have encountered various issues (recorded below) with
> Red Hat Enterprise Linux 3 and Fedora Core 2 distributions that are
> impeding me from performing a comparison of Xen 2.0 to VMWare GSX
> Server.

Debian? There are instructions near the end of the Xen user manual on
using the debootstrap utility to create a Debian base system.

-- 
Robert Edmonds


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Re: Xen 2.0 deployment recommendation

[Manoj Punamia]

Robert Edmonds <edmonds42 <at> bellsouth.net> writes:

> 
> Ed Espino wrote:
> > Could someone please recommend a starting Linux distribution of least
> > resistance for deploying Xen 2.0.  I am not limited to any one
> > distribution.  I have encountered various issues (recorded below) with
> > Red Hat Enterprise Linux 3 and Fedora Core 2 distributions that are
> > impeding me from performing a comparison of Xen 2.0 to VMWare GSX
> > Server.
> 
> Debian? There are instructions near the end of the Xen user manual on
> using the debootstrap utility to create a Debian base system.
> 

I am also interested in the comparision of the two and have similar issues. 
Keep getting Kernel Panic when using with RedHat 9.0.





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RE: Xen 2.0 deployment recommendation

[Ian Pratt]

> Linux Distro: Red Hat Enterprise Linux 3
>   Kernel: 2.4.21-15.EL
>   
>   Symptom: When booting Xen 2.0 binary distribution the following
>   error message is received "Kernel panic : No init = found.  Try
>   passing init=3D option to kernel". 

Are you sure the file system image is populated correctly? I presume the
file system is ext3 rather than something fancy? What happens if you
mount it from dom0 and look at sbin/init?
 
> ----------------------------------------------------------------------
> 
>   Linux Distro: Fedora Core 2 (2.6.5-1.358smp)
>   Built Xen 2.0 kernel: 2.6.9-xen0
> 
>   Symptom: When booting 2.6.9 based kernel built with the Xen 2.0
>   source distribution the following error messages are repeatedly
>   received.  The system boots but no modules are loaded (lsmod):
> 
>     Nov  9 14:38:28 sacramento modprobe: FATAL: Could not load
> /lib/modules/2.6.9-xen0/modules.dep: No such file or directory 

This error is usually harmless, and just indiciates that you haven't
installed modules for your xen kernel on the new partition. Once you've
got the system booted you should be able to log in and install the
modules.

Alternatively, if you want to install before rebooting use: 
 make INSTALL_DIR=/temporary_mnt_point_of_new_file_system install

Ian


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