[Xen-users] DomU not seeing the LVMs I'm passing in the config

[George Lenzer <George.Lenzer@xxxxxxx>]

I'm using Xen 3.0.3 as packaged within CentOS 5 as my Dom0 system.  I 
was able to easily get the system to talk to our SAN and then use RAID 
level "multipath" to group the multiple paths to the SAN into one 
/dev/md0 which I then sliced up with LVM into: /dev/xenstore/Zimbra-root 
and /dev/xenstore/Zimbra-swap.  Zimbra-root is 500 gigs (which I 
recently found out won't work because of the Bochs BIOS in Xen's HVM 
version of QEMU) and Zimbra-swap is 16 gigs.  When I boot up off of my 
RHEL 4.5 iso, the installer boots, but then says that no hard drives 
were found.  Now I'm aware that there are massive changes being made to 
the config files, but since this is 3.0 I suspect the old Python style 
configs are still valid.  Here's what I have to present my Dom0 logical 
volumes to the DomU:
disk = [ 'phy:xenstore/Zimbra-root,hda1,w', 
'phy:xenstore/Zimbra-swap,hda2,w' ]
I've tried different iterations of that as well with Zimbra-root as hda 
and Zimbra-swap as hdb, as well as trying to present them as sda or sda1 
and sdb or sda2.  Nothing seems to work.
Here's my full config:

----------
import os, re
arch = os.uname()[4]
if re.search('64', arch):
   arch_libdir = 'lib64'
else:
   arch_libdir = 'lib'
kernel = "/usr/lib/xen/boot/hvmloader"
builder='hvm'
memory = 4096
shadow_memory = 8
name = "Zimbra"
vcpus=2
pae=1
vif = [ 'type=ioemu, mac=00:16:3e:03:00:00, bridge=xenbr0, model=ne2k_pci' ]
disk = [ 'phy:xenstore/Zimbra-root,hda1,w', 
'phy:xenstore/Zimbra-swap,hda2,w' ]
disk = [ 'file:/usr/src/RHEL4-U5-x86_64-AS-disc1.iso,hdc:cdrom,r' ]
root = "/dev/hda1 ro"
extra = "selinux=0 3"
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
boot="dca"
sdl=0
vnc=1
stdvga=0
serial='pty'
usb=1
usbdevice='tablet'
----------

The hardware it's running on  is an HP DL380 G5 with dual 64-bit Intel 
Xeons with multiple cores and 8 gigs of RAM.  The eventual goal is to 
run RHEL with Zimbra on it and a few other DomUs as well.  I'm pretty 
sure my problem here is simply one of not quite having the right syntax 
for the disk config.
Thanks,

George


--
George Lenzer
Computer and Networking Specialist
Cleveland Public Library
Automation Department
Office: (216)623-2981


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