Xen users - Jul 2005 - Root-NFS: No NFS server available, giving up.

I have successfully installed the Xen0 domain on a variety of X86
platforms, however, I am experiencing difficulty with -stable,
-testing and -unstable when installing on a Compaq DL360.  I was able
to get a build working with this configuration once, but after
subsequent tries, I am still having problems.   I have built the
cpqarray and SCSI driver statically.   When I try to boot the domain,
it is unable to mount the root fs.

I do not know why it is trying to use Root-NFS to boot?  Any suggestions?

---start snippet--
Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Insert root floppy and press ENTER
---end snippet-

--grub snippet--
title           Debian XenLinux
root            (hd0,0)
kernel          /xen-3.gz dom0_mem=512000
module          /vmlinuz-2.6.12.3-xen0 root=/dev/ida/c0d0p2 ro console=tty0
savedefault
boot
--end grub snippet--

Best regards,

Wylie

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> I do not know why it is trying to use Root-NFS to boot?  Any
> suggestions?
It tries that in desperation when the proper root fs fails.
> module          /vmlinuz-2.6.12.3-xen0 root=/dev/ida/c0d0p2 ro
> 	console=tty0 savedefault
Is this root entry correct? It looks quite unlike others I have seen. If
this is a device from devfs, or if you need to use kernel modules to
mount this fs, you probably need to create an initrd image. You do this
in the same way you would for a normal kernel, with mkinitrd
vmlinuz-2.6.12.3-xen0 (or whatever version), and you specify it as a
second module in your grub config. Question 4.7 of
http://wiki.xensource.com/xenwiki/XenFaq
deals with setting up an initrd, and question 4.8 deals with modifying
your distro''s initrd if you don''t want to or can''t
create one from
scratch.

HTH,
Daniel H

-- 
There may come a time                           The open palm of desire,
When I will lose you,  ]http://surreal.istic.org/[  The rose of Jericho,
Lose you as I lose my sight,                     Soil as soft as Summer,
Days falling backward into velvet night;     The strength to let you go.


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All of the necessary modules (I believe) have been compiled statically
into the kernel.  This is the same root entry that I have used in the
past (and was able to make work successfully once).  However, I have
also used the initrd just to be sure.  When doing so, this is the
message I get:

RAMDISK: cramfs filesystem found at block 0
RAMDISK: Loading 1012KiB [1 disk] into ram disk... done.
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[system reboots if noreboot not set]

W


On 7/28/05, Daniel Hulme <dh286@cam.ac.uk> wrote:
> > I do not know why it is trying to use Root-NFS to boot?  Any
> > suggestions?
> It tries that in desperation when the proper root fs fails.
> 
> > module          /vmlinuz-2.6.12.3-xen0 root=/dev/ida/c0d0p2 ro
> >       console=tty0 savedefault
> Is this root entry correct? It looks quite unlike others I have seen. If
> this is a device from devfs, or if you need to use kernel modules to
> mount this fs, you probably need to create an initrd image. You do this
> in the same way you would for a normal kernel, with mkinitrd
> vmlinuz-2.6.12.3-xen0 (or whatever version), and you specify it as a
> second module in your grub config. Question 4.7 of
> http://wiki.xensource.com/xenwiki/XenFaq
> deals with setting up an initrd, and question 4.8 deals with modifying
> your distro''s initrd if you don''t want to or
can''t create one from
> scratch.
> 
> HTH,
> Daniel H
> 
> --
> There may come a time                           The open palm of desire,
> When I will lose you,  ]http://surreal.istic.org/[  The rose of Jericho,
> Lose you as I lose my sight,                     Soil as soft as Summer,
> Days falling backward into velvet night;     The strength to let you go.
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
> 
> 
>
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