[Fedora-xen] using the xenguest-install.py

[Matt Herzog]

Hello All.

I have been attempting to get a Xen guest to boot on a Dell 2650 running FC5.
The machine has a 205GB hardware RAID disk controlled by a Dell PERC 3/Di rev 1. The machine is fully updated via yum to all the stock repos. It's running the Xen package from Fedora.org

Here is the fstab file for the host domain (Domain-0):
------------------------------------------------------------------------
/dev/sda2               /                       ext3    defaults        1 1
/dev/sda1               /boot                   ext3    defaults        1 2
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
sysfs                   /sys                    sysfs   defaults        0 0
/dev/sda3               swap                    swap    defaults        0 0
------------------------------------------------------------------------

Here is the output of fdisk -l 
------------------------------------------------------------------------
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   83  Linux
/dev/sda2              14        1033     8193150   83  Linux
/dev/sda3            1034        1294     2096482+  82  Linux swap / Solaris
/dev/sda4            1295       26770   204635970    5  Extended
/dev/sda5            1295       26770   204635938+  83  Linux
------------------------------------------------------------------------

I have attempted to use LVM-backed VBDs as instructed here:
http://tx.downloads.xensource.com/downloads/docs/user/#SECTION03330000000000000000

Here is my config file for the LVM-backed VBD named, psdev0
------------------------------------------------------------------------
def vmid_check(var, val):
    val = int(val)
    if val <= 0:
        raise ValueError
    return val

xm_vars.var('vmid',
            use="Virtual machine id. Integer greater than 0.",
            check=vmid_check)

xm_vars.check()
kernel = "/boot/vmlinuz-2.6.17-1.2187_FC5xen0"
ramdisk = "/boot/initrd-2.6.17-1.2187_FC5xen0.img"
memory = 256
name = "VM%d" % vmid
vcpus = 2
vif = [ '' ]
disk = [ 'phy:vg/psdev0,sda1,w' ]
dhcp="dhcp"
root = "/dev/sda1"
------------------------------------------------------------------------

"xm info" has this to say about the running Domain-0:

------------------------------------------------------------------------
[root at xiamen xen]# xm info
host                   : xiamen.cinteractive.com
release                : 2.6.17-1.2187_FC5xen0
version                : #1 SMP Mon Sep 11 02:05:21 EDT 2006
machine                : i686
nr_cpus                : 4
nr_nodes               : 1
sockets_per_node       : 2
cores_per_socket       : 1
threads_per_core       : 2
cpu_mhz                : 2790
hw_caps                : 00000000:00000000:bfebfbff:00000000:00000000:00000080:00004400
total_memory           : 3840
free_memory            : 3674
xen_major              : 3
xen_minor              : 0
xen_extra              : -unstable
xen_caps               : xen-3.0-x86_32
platform_params        : virt_start=0xfc000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)
cc_compile_by          : brewbuilder
cc_compile_domain      : build.redhat.com
cc_compile_date        : Mon Sep 11 01:13:36 EDT 2006


Here's what I see when I run, "xm create -c psdev0 vmid=1"

----------------------------------------------------------------------------
i8042.c: No controller found.
mice: PS/2 mouse device common for all mice
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
Using IPI No-Shortcut mode
XENBUS: Device with no driver: device/vbd/2049
XENBUS: Device with no driver: device/vif/0
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
VFS: Cannot open root device "sda1" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

No matter what I set the root= option to be, the result is the same.

Oh, one last config file: my grub.conf from Domain-0

----------------------------------------------------------------------------
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title XenCore (2.6.17-1.2187_FC5xen0)
        root (hd0,0)
        kernel /xen.gz-2.6.17-1.2187_FC5
        module /vmlinuz-2.6.17-1.2187_FC5xen0 ro root=/dev/sda2 ro console=tty0
        module /initrd-2.6.17-1.2187_FC5xen0.img
title Fedora Core (2.6.17-1.2187_FC5smp)
        root (hd0,0)
        kernel /vmlinuz-2.6.17-1.2187_FC5smp ro root=LABEL=/
        initrd /initrd-2.6.17-1.2187_FC5smp.img
title Fedora Core (2.6.15-1.2054_FC5smp)
        root (hd0,0)
        kernel /vmlinuz-2.6.15-1.2054_FC5smp ro root=LABEL=/
        initrd /initrd-2.6.15-1.2054_FC5smp.img

Any advice would be welcome.