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

[Sadique Puthen <sputhenp@xxxxxxxxxx>]

How did you create your initrd image?

Recreate it using  --preload=xenblk --with-xennet. Change the disk line 
as below.
disk = [ 'phy:LG0/LV1,xvda,w','phy:LG0/LV2,xvdb,w','phy:LG0/LV3,xvdc,w' ]

Then try to start the guest.

--Sadique

Steven Timm wrote:
> <flxi05> grep -v ^# xen1.cfg
>
> kernel = "/linux32/boot/vmlinuz-2.6.18-53.1.4.el5xen"
> ramdisk = "/linux32/boot/initrd-2.6.18-53.1.4.el5xen.img"
> memory = 4000
> name = "fcdfx41"
> vif = [ 'mac=00:16:3e:0C:04:01, bridge=xenbr0', 
> 'mac=00:16:3e:0C:04:09, bridge=xenbr1' ]
> disk = [ 'phy:LG0/LV1,sda1,w','phy:LG0/LV2,sda2,w','phy:LG0/LV3,sda3,w' ]
> netmask= "255.255.255.0"
> gateway= "131.225.240.200"
> hostname= "fcdfx41.fnal.gov"
> root = "/dev/sda1 ro"
> extra = "4"
>
> ----------------
> I am using the kernel inside dom0 to try to boot the domU.  That is
> what I have done on all my installations up until now.  But I am willing
> to change if someone finds a better way.
>
> I also tried to install a different Xen instance from scratch using
> virt-manager, but it did get up to installing about ten rpms before it
> quit, i.e. it got through the whole anaconda input phase of the install.
>
> Steve Timm
>
>
>
>
>
> ------------------------------------------------------------------
> Steven C. Timm, Ph.D  (630) 840-8525
> timm@xxxxxxxx  http://home.fnal.gov/~timm/
> Fermilab Computing Division, Scientific Computing Facilities,
> Grid Facilities Department, FermiGrid Services Group, Assistant Group 
> Leader.
> On Wed, 12 Dec 2007, Sadique Puthen wrote:
>
> > 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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