Xen users - Mar 2009 - Lenny 2.26.1 xenu vmlinuz-2.6.28.7 Hangs Waiting for root file system

Hi,

i got problems with compiling an domu kernel.
I tried to compile SATA as nonmodule but i got the same Probleme


Begin: Waiting for root file system ... done.
Gave up waiting for root device.  Common problems:
 - Boot args (cat /proc/cmdline)
   - Check rootdelay= (did the system wait long enough?)
   - Check root= (did the system wait for the right device?)
 - Missing modules (cat /proc/modules; ls /dev)
ALERT! /dev/sda2 does not exist. Dropping to a shell!


BusyBox v1.10.2 (Debian 1:1.10.2-2) built-in shell (ash)
Enter ''help'' for a list of built-in commands.

/bin/sh: can''t access tty; job control turned off

heres my xenu.cfg

#
#  Kernel + memory size
#
kernel      = ''/boot/vmlinuz-2.6.28.7''
ramdisk     = ''/boot/initrd.img-2.6.28.7''
memory      = ''256''

#
#  Disk device(s).
#
root        = ''/dev/sda2 ro''
disk        = [
                  ''file:/xen/domains/rcm/swap.img,sda1,w'',
                  ''file:/xen/domains/rcm/disk.img,sda2,w'',
              ]

extra       = ''xencons=tty''

tried sda and hda both faild. I am sure initramfs is the problem but i cant
solve thx :-)


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On Mon, Mar 2, 2009 at 8:02 PM, Thorsten Reiser <shelltunes2k@gmail.com>
wrote:
> root        = ''/dev/sda2 ro''
> disk        = [
>                  
''file:/xen/domains/rcm/swap.img,sda1,w'',
>                  
''file:/xen/domains/rcm/disk.img,sda2,w'',
>               ]
>
>From the list archive
http://lists.xensource.com/archives/html/xen-users/2009-02/msg00516.html

"When using a vanilla kernel all XenVirtualBlock devices will be named
  xvd<letter>
so the declaration of ''sda1'' and ''sda2'' will
be silently ignored."

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Cc-ing the list, as I think that''s what your intention was when you
wrote "All," :)


On Tue, Mar 3, 2009 at 9:29 PM, Barry van Someren
<barry@coffeesprout.com> wrote:
> All,
>
> Does anybody have any success installing Lenny as a DomU in a CentOS Dom0?
> I''ve been chipping away at this for a while, but unfortunately
I''m not
> very familiar with Debian.
> So far I''ve tried doing this as a PV install using Xen-tools and
debootstrap.
Try this, should also work for Debian by changing the debootstrap parameter
http://bderzhavets.wordpress.com/2009/01/07/debootstrap-intrepid-server-pv-domu-at-xen-331-centos-52-dom0-all-64-bit/

I tested it some time ago with debootstrap from EPEL
(http://fedoraproject.org/wiki/EPEL)
If I remembered correctly I only had to make minor changes (like
setting up static IP instead of DHCP).
>
> The kernels I''ve tried are the default Dom0 kernel that came with
> CentOS (Hangs after mounting ext3 and sits there consuming cpu)
> My second try I did another debootstrap run and used the kernel that
> came with Lenny (vmlinuz-2.6.26-1-xen-amd64)
> The second try boots (slowly) and seems to come up with some
> networking issues that may or may not be caused by my inability to
> properly setup Debian in a dual network environment :-)
>
Are you using PV or HVM domU? The instructions above create a PV domU,
with Ubuntu''s 2.6.27-7-server kernel contained in domU, booted with
pygrub. As far as I can tell it''s as fast as my Centos PV domU.

Regards,

Fajar

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Fajar A. Nugraha wrote:
> Cc-ing the list, as I think that''s what your intention was when
you
> wrote "All," :)
> 
> 
> On Tue, Mar 3, 2009 at 9:29 PM, Barry van Someren
> <barry@coffeesprout.com> wrote:
>> All,
>>
>> Does anybody have any success installing Lenny as a DomU in a CentOS
Dom0?
>> I''ve been chipping away at this for a while, but unfortunately
I''m not
>> very familiar with Debian.
>> So far I''ve tried doing this as a PV install using Xen-tools
and debootstrap.
> 
> Try this, should also work for Debian by changing the debootstrap parameter
>
http://bderzhavets.wordpress.com/2009/01/07/debootstrap-intrepid-server-pv-domu-at-xen-331-centos-52-dom0-all-64-bit/
> 
> I tested it some time ago with debootstrap from EPEL
> (http://fedoraproject.org/wiki/EPEL)
> If I remembered correctly I only had to make minor changes (like
> setting up static IP instead of DHCP).
Hi,

Our dtc-xen software has a fully automated way to get CentOS installed
in a PV Xen domU.
>From our man page:
dtc_reinstall_os [ -v ] VPS_NUMBER HDD_SIZE MEMORY_SIZE IP_ADDRESS [
DISTRO ] [ lvm|loopback ]

Example:

dtc_reinstall_os 16 15360 256 ''66.2.45.2 66.2.45.3'' centos lvm

This  will setup the VM called xen16, build it’s startup file in
/etc/xen/xen16 with a vif containing ip=66.2.45.2 66.2.45.3 and 256 MB
of RAM, setting-up a centos stable  operating  system with  66.2.45.2
setup  as  eth0  IP  address  (66.2.45.3  is  to be added later on
manually in /etc/sysconfig later).

It uses Yum, so it takes the latest packages of base from network, which
is by far superior than using an image. But yum unfortunately is broken
in Lenny. See my bug report in the Debian BTS:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=496137

So you shall use the patched version we have from our repository. In the
source repository, there is an up-to-date (I mean, same as upstream of
yum) version, but it''s not released yet. We wish to have this uploaded
to lenny proposed updates, we are currently working on this.

Thomas

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On Wed, Mar 4, 2009 at 3:36 PM, Thomas Goirand <thomas@goirand.fr>
wrote:
>>> Does anybody have any success installing Lenny as a DomU in a
CentOS Dom0?
> Our dtc-xen software has a fully automated way to get CentOS installed
> in a PV Xen domU.
> We wish to have this uploaded
> to lenny proposed updates, we are currently working on this.
I think Barry is asking for the other way around : Lenny domU on CentOS dom 0 :)

Thanks for the info though.

Regards,

Fajar

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