Re: [Xen-users] Me vs. RHEL 2.6.18-53.1.4.el5xen

[Sadique Puthen <sputhenp@xxxxxxxxxx>]

Can you please show your guest configuration file?  Are you using a  
kernel and ramdisk from the dom0 to boot the guest or are they put 
inside guest filesystem and using pygrub to load them from guest?
--Sadique

Steven Timm wrote:
> I am trying to migrate an existing working xen setup
> which was based on xen 3.1.0 tarballs as they were available
> at xen.org.  Underlying distro is RHEL5.
> I am now trying to use the not-really-xen3.1.0-but-almost
> xen that comes with RHEL5 update 1.
>
> Host was 64-bit dom0.  first domU was PAE 32-bit, both from xen 3.1.0 
> tarballs.
> Now I have installed kernel-2.6.18-53.1.4.el5xen on the dom0.
> That boots up fine.  I tried to start up the domU first with
> the old 2.6.18-xen kernel (32-bit PAE) that was working before.  That
> also started up OK, although it did crash once.
>
> The question is--how to get the 32-bit PAE kernel from
> RedHAt installed and booting in the domU.  I tried both
> 2.6.18-53.1.4.el5xen (32bit) and 2.6.18-53.1.4.el5PAE (32bit)
>
> the former cannot find the root system file system of the domU. I get 
> the following error:
> mount: could not find filesystem '/dev/root'
> Setting up other filesystems.
> Setting up new root fs
> setuproot: moving /dev failed: No such file or directory
> no fstab.sys, mounting internal defaults
> setuproot: error mounting /proc: No such file or directory
> setuproot: error mounting /sys: No such file or directory
> Switching to new root and running init.
> unmounting old /dev
> unmounting old /proc
> unmounting old /sys
> switchroot: mount failed: No such file or directory
> Kernel panic - not syncing: Attempted to kill init
> -----------------
>
> If I compare between the 2.6.18-xen kernel from xensource which
> works, and this one that doesn't, I see that I am missing
> the modules ide-disk.ko, libusual.ko, usbcore.ko, usb-storage.ko
> The usb modules should be irrelevant since there is no usb on this 
> machine.
> alas, the ide-disk.ko module which seems to be the key one isn't even
> there at all in the redhat ersion of the kernel.
>
> ----------------------
>
> If I try to load the PAE version of the kernel instead, I get the 
> following error message:
> VmError: (2, 'Invalid kernel', 'xc_dom_parse_elf_kernel: ELF image has 
> no shstrtab\n')
>
> Any clue what may be going on?
> Does anyone else have a RHEL 5 update 1 system working with 64-bit host,
> 32 bit PAE guests?
>
> Thanks
>
> Steve Timm

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