Hi,

I am new to crash utility. I want to run crash ( crash 4.0-2.18.1) on dual-core AMD Opteron (x86_64) cluster. The cluster nodes are running xen 3.0 the proc/version gives the following output : 2.6.16.13-xen
i am running xen 3.0 which has been installed on fc5. 

I guess the kernel was not built with debugging info on

Running crash gives the following output:

crash 4.0-2.18.1
Copyright (C) 2002, 2003, 2004, 2005, 2006  Red Hat, Inc.
Copyright (C) 2004, 2005, 2006  IBM Corporation
Copyright (C) 1999-2006  Hewlett-Packard Co
Copyright (C) 2005  Fujitsu Limited
Copyright (C) 2005  NEC Corporation
Copyright (C) 1999, 2002  Silicon Graphics, Inc.
Copyright (C) 1999, 2000, 2001, 2002  Mission Critical Linux, Inc.
This program is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions.  Enter "help copying" to see the conditions.
This program has absolutely no warranty.  Enter "help warranty" for details.

WARNING: cannot read linux_banner string
crash: /boot/vmlinux-syms-2.6.16.13-xen and /dev/mem do not match!

I read up on the previous threads that this is because /dev/mem returns all zereos. 
 I think I need something like a patch for installing the /dev/crash module. I am new to this so can anyone help me out with a detailed procedure of what needs to be done.

Thank You.

Aditya Krishnan