Syslinux - Jan 2007 - network booting initrd -mount: error 6 mounting ext3

Hi all,

Im network booting initrd-2.6.9-22.EL.img from
pxelinux.
<snip from init script>

echo Creating root device
mkrootdev /dev/root
umount /sys
echo Mounting root filesystem 
mount -o defaults --ro -t ext3 /dev/root /sysroot
mount -t tmpfs --bind /dev /sysroot/dev
echo Switching to new root
switchroot /sysroot
echo UMOUNTING initrd-dev
umount /initrd/dev

</snip>

I receive error while mounting :
mount -o defaults --ro -t ext3 /dev/root /sysroot

mount: error 6 mounting ext3
mount: error 2 mounting none
Switching to new root
switchroot: mount failed: 22
UNMOUNTING initrd-dev
umount /initrd/dev failed: 2
Kernel panic - not syncing: Attempted to kill init!

My pxelinux configuration looks like
kernel vmlinuz-2.6.9-22.EL
append initrd=initrd-2.6.9-22.EL.img root=/dev/ram
keeppxe

I can see that ext3 modul was successfully loaded
using insmod utility.

Please advice how to make initrd n/w booting.


pankaj





 
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On Mon, Jan 15, 2007 at 07:07:12AM -0800, pankaj takawale
wrote:
> Hi all,
> 
> Im network booting initrd-2.6.9-22.EL.img from
> pxelinux.
> <snip from init script>
> 
> echo Creating root device
> mkrootdev /dev/root
> umount /sys
> echo Mounting root filesystem 
> mount -o defaults --ro -t ext3 /dev/root /sysroot
> mount -t tmpfs --bind /dev /sysroot/dev
> echo Switching to new root
> switchroot /sysroot
> echo UMOUNTING initrd-dev
> umount /initrd/dev
> 
> </snip>
> 
> I receive error while mounting :
> mount -o defaults --ro -t ext3 /dev/root /sysroot
> 
> mount: error 6 mounting ext3
> mount: error 2 mounting none
> Switching to new root
> switchroot: mount failed: 22
> UNMOUNTING initrd-dev
> umount /initrd/dev failed: 2
> Kernel panic - not syncing: Attempted to kill init!
> 
> My pxelinux configuration looks like
> kernel vmlinuz-2.6.9-22.EL
> append initrd=initrd-2.6.9-22.EL.img root=/dev/ram
> keeppxe
Well, you're trying to boot /dev/ram, what did you expect?

root=/dev/ram represents initrd, but you're not using initrd, but the
new initramfs format.

-- 
lfr
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Just an update:
I built initrd by compilining linux 2.4 kernel and
added debug messages in kernel code.

With this initrd & vmlinuz - I receive error like
"Kernel panic: init not found"

I found that execve is returning error EIO - I/O error
while executing /bin/sh.
I have injected sh into bin folder of initrd. 
I can see that root filesystem is mounted
successfully. 

Please advice.



 
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