linux-2.6-xen kernels and initrds

["David F. Barrera" <dfbp@us.ibm.com>]

I have a question regarding the building of the unified xen kernel 
(linux-2.6-xen) and the use of initrd.  In the past I built both xen0 
and xenU kernels; the xen0 default configurations had SCSI and Fusion 
MPT support compiled into the kernel.  Now, they are built as modules. 
The problem is that I am unable to boot the xen kernel built that way, 
even though I am building an initrd. I have machines running both SLES 
and FC that are exhibiting this problem. The question is, do I need to 
do something special to build the initrds?  In SuSE, I typically just 
used the 'mkinitrd' command; in FC4, I do it like this: "mkinitrd -v -f 
--with=aacraid --with=sd_mod --with=scsi_mod initrd-2.6.16-xen 
2.6.16-xen". At any rate, nothing has worked to this point.

The SCSI device support help page in 'make menuconfig' states 'do not 
compile this as a module if your root file system (the one containing 
the directory /) is located on a SCSI device.', which is the case in my 
setup. But I have seen it where the distros compile it as module, and 
the initrd takes care of it.

Any help would be appreciated.

-- 
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                       Euripides