Xen devel - May 2009 - WinXP hard disk duplicated with Novell drivers

I searched Google and both the user and devel mailing lists, but didn''t
see any reference to this.

I have a WinXP SP3 DomU that mostly works.  However I installed the SLES 
10 Virtual Machine Drivers for Windows on Xen.  Now I have both a C: and 
a D: drive - but they''re the same underlying filesystem.  I hope it 
doesn''t corrupt my filesystem!

If I do a Properties on either drive icon, then click the Hardware tab, 
I see two drives listed:

   QEMU HARDDISK
   Novell Xen Block SCSI Disk Device

So Windows is getting at the underlying VBD through both QEMU and the 
Novell driver.

I am using the 3.4.0 Xen kernel with the xen-tip/next Linux kernel 
source as of last night.

I am unclear on how to properly use the Xen blkdev - it doesn''t seem to
be documented anywhere.  It''s apparently meant to be used as a SCSI 
device, but when I use "sda" instead of "hda" in my DomU
config, the
Bochs BIOS can''t find the boot device.  That is, this works with the 
doubled drive:

    disk = [ ''phy:/dev/sda10,hda,w'' ]

This won''t boot:

    disk = [ ''phy:/dev/sda10,sda,w'' ]

Here is my 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 = 1024

name = "WinXP"

pae=0
acpi=1
apic=1

vif = [ ''type=ioemu, bridge=xenbr0, mac=00:16:3e:0A:00:11'' ]

# disk = [ ''file:/home/DomU/winxp.img,sda,w'' ]
# disk = [ ''phy:/dev/sda10,hda,w'', 
''file:/home/mike/Archives/Windows/GRTMPOEM_EN.iso,sdb:cdrom,r''
]
disk = [ ''phy:/dev/sda10,hda,w'' ]

device_model = ''/usr/'' + arch_libdir +
''/xen/bin/qemu-dm''

boot="dc"
sdl=1
vnc=0
vncunused=1
vncpasswd=''..luis''

stdvga=0
serial=''pty''
monitor=1

-- 
Michael David Crawford
mdc@prgmr.com

    prgmr.com - We Don''t Assume You Are Stupid.

       Xen-Powered Virtual Private Servers: http://prgmr.com/xen

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On 25/05/2009 03:35, "Michael David Crawford" <mdc@prgmr.com>
wrote:
> If I do a Properties on either drive icon, then click the Hardware tab,
> I see two drives listed:
> 
>    QEMU HARDDISK
>    Novell Xen Block SCSI Disk Device
> 
> So Windows is getting at the underlying VBD through both QEMU and the
> Novell driver.
Newer drivers, like the GPLPV drivers, should disable the qemu path when
they are installed. I would recommend trying the GPLPV drivers.

 -- Keir



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