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Re: [Xen-devel] Invalid or unsupported executable format, or is it a reiserfs problem?

> Our newly build xen kernel does not boot. The error message is : Invalid
> or unsupported executable format. 
> I have build xen from the xen-2.0.4 source (make world, make install) on
> a debian sarge system. 
> I have not changed any of the kernel configurations, I did make an
> initrd image. 
> The entry in my menu.lst is : 
> title           Debian GNU/Linux, kernel 2.6.10-xen0 
> root            (hd0,0) # I also tried without this line. 
> kernel          /boot/xen.gz dom0_mem=64000 
> module          /boot/vmlinuz-2.6.10-xen0 root=/dev/hda1 ro 
> module          /boot/initrd.img-2.6.10-xen0 # Also tried without this
> line 
> The server's / (/boot) partition is reiserfs. I wonder if this is the
> problem? I found messages saying that it doesn't work with reiserfs and
> others that say it should work. What is the final answer? 
> Looking in the kernel config file: reiserfs is build into the kernel,
> not as a module. 

What does `file /boot/xen.gz' say? 
What does `cat /boot/xen.gz | gunzip -c | file -` say? 

> As a side note: the standard debian 2.6.8-2 kernel works perfectly. 
> == from the grub manual == 
> Invalid or unsupported executable format: 
> This error is returned if the kernel image being loaded is not
> recognized as 
> Multiboot or one of the supported native formats (Linux zImage or
> bzImage, 
> FreeBSD, or NetBSD). 
> == end == 
> since xen is multiboot and I would be surprised that the xen.gz kernel
> image file is not in native format; I have a strong feeling that this
> error message is not giving the root cause. 

You may well be right; we've not used reiserfs extensively and so 
it is possible some weird condition is being triggered. That said 
I believe some people have reported happiness with reiserfs. 

Can you reproduce the error with just xen (i.e. no xenlinux and
no initrd and hence no "module" lines at all)? 



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