Re: [Xen-users] WinXP CD-ROM problems

[Jason Solan <jsolan@xxxxxxxxxxxxxxxxxxxx>]

In order to change cd-roms, you need to detach/re-attach the device for
WinXP to re-read the drive.  However I've noticed (at least in xen 3.1)
that you have attach a "dummy" drive before re-attaching the real drive.

Here's what i use from dom0:
/usr/sbin/xm block-configure <domU> file:/xen/foo.iso hdc:cdrom r
/usr/sbin/xm block-configure <domU> phy:/dev/cdrom hdc:cdrom r

where hdc:cdrom is the drive in the hvm config.


On Wed, 2008-04-23 at 11:52 -0400, Just Anidiot wrote:
> On Wed, Apr 23, 2008 at 11:37 AM, Tait Clarridge
> <Tait.Clarridge@xxxxxxxxxxxx> wrote:
> > Ok, Have you tried shutting down the VM completely (not just a reboot)
> >  and bringing it back up again?
> 
> Rebooting does cause WinXP to see the new disk in the drive.  However
> that doesn't really work since rebooting in the middle of the software
> install means I have to start over with disk 1.
> 
> >  Have you upgraded any part of your host recently? Or of your Xen
> >  installation?
> 
> Updates are done whenever RH makes them available.
> 
> Currently installed packages are:
> xen-devel-3.0.3-41.el5
> kernel-xen-2.6.18-53.1.14.el5
> kernel-xen-devel-2.6.18-53.1.13.el5
> xen-3.0.3-41.el5
> kernel-xen-devel-2.6.18-53.1.14.el5
> xen-libs-3.0.3-41.el5
> kernel-xen-2.6.18-53.1.13.el5
> 
> 
> 
> >
> >  Best,
> >
> > Tait
> >
> >  -----Original Message-----
> >  From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> >  [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Just Anidiot
> >
> >
> > Sent: Wednesday, April 23, 2008 11:35 AM
> >  To: xen-users@xxxxxxxxxxxxxxxxxxx
> >  Subject: Re: [Xen-users] WinXP CD-ROM problems
> >
> >  On Wed, Apr 23, 2008 at 11:23 AM, Tait Clarridge
> >  <Tait.Clarridge@xxxxxxxxxxxx> wrote:
> >  > If the phy:\ is removed it won't see it. That is a given, I haven't
> >  had
> >  >  much luck with hooking xen to a physical cdrom device.
> >  >
> >
> >  This use to work about 3-5 months ago.  I haven't needed it recently
> >  until today.
> >
> >  >  How did you copy the WinXP install disk? What messages are you
> >  getting,
> >  >  is it from the Xen BIOS or something else...
> >  >
> >
> >  Just with dd if=/dev/cdrom of=image.iso  Its been about a year since I
> >  did it and that's how I installed Windows.  Of course today also WinXP
> >  thinks it needs the disk for something stupid.
> >
> >  >  I have had no issues installing Windows XP in Xen before... do you
> >  mind
> >  >  posting your entire .hvm file and maybe the specs of your rig?
> >  >
> >
> >  Here's my hvm file  (with the old disk line)
> >  -------------------------------
> >  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=512
> >
> >  shadow_memory = 8
> >
> >  name = "WinXP-001"
> >
> >  vif = [ 'type=ioemu, bridge=xenbr0' ]
> >
> >  disk = [ 'phy:/dev/VG_Guests/WinXP-001,ioemu:hda,w',
> >  'file:/opt/xen_stuff/winxp.iso,hdc:cdrom,w',
> >  'phy:/dev/scd0,hdd:cdrom,r' ]
> >
> >  device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
> >
> >  boot="cd"
> >
> >  sdl=0
> >
> >  vnc=1
> >
> >  vnclisten="127.0.0.1"
> >
> >  vncdisplay=21
> >
> >  vncpasswd=''
> >
> >  stdvga=0
> >
> >  serial='pty'
> >
> >  usb=1
> >  usbdevice='tablet'
> >  -------------------------
> >
> >  Thanks for trying to help me.
> >
> >
> >  >  Thanks,
> >  >  Tait
> >  >
> >  >
> >  >  -----Original Message-----
> >  >  From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> >  >  [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Just
> >  Anidiot
> >  >  Sent: Wednesday, April 23, 2008 11:07 AM
> >  >  To: xen-users@xxxxxxxxxxxxxxxxxxx
> >  >
> >  >
> >  > Subject: Re: [Xen-users] WinXP CD-ROM problems
> >  >
> >  >  On Wed, Apr 23, 2008 at 10:58 AM, Tait Clarridge
> >  >  <Tait.Clarridge@xxxxxxxxxxxx> wrote:
> >  >  > Hi Just,
> >  >  >
> >  >  >  You need to change the CDROM part of the disk = to look like
> >  >  >
> >  >  >  'file:/opt/xen_stuff/winxp.iso,ioemu:hdc:cdrom,r'
> >  >  >
> >  >  >  That should solve your problem, but make sure you remove the
> >  >  >  'phy:/dev.....' line as well as it will conflict.
> >  >  >
> >  >
> >  >  This didn't solve the problem with WinXP thinking the disk is
> >  corrupted.
> >  >
> >  >  Also I want WinXP to be able to access both the iso and the real
> >  >  physical CDROM on the box.  If I take out the 2nd CDROM (the one with
> >  >  phy:/dev...) WinXP doesn't seem to know anything about the physical
> >  >  one.
> >  >
> >  >  What can I do?
> >  >
> >  >  Thanks.
> >  >
> >  >
> >  >  >
> >  >  >
> >  >  >  -----Original Message-----
> >  >  >  From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> >  >  >  [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Just
> >  >  Anidiot
> >  >  >  Sent: Wednesday, April 23, 2008 10:26 AM
> >  >  >  To: xen-users@xxxxxxxxxxxxxxxxxxx
> >  >  >  Subject: [Xen-users] WinXP CD-ROM problems
> >  >  >
> >  >  >  I'm running Xen on RHEL5.
> >  >  >
> >  >  >  I've got two problems with CD-ROMs.
> >  >  >
> >  >  >  In my .hvm file, I've got the following line:
> >  >  >
> >  >  >  disk = [ 'phy:/dev/VG_Guests/WinXP-001,ioemu:hda,w',
> >  >  >  'file:/opt/xen_stuff/winxp.iso,hdc:cdrom,w',
> >  >  >  'phy:/dev/scd0,hdd:cdrom,r' ]
> >  >  >
> >  >  >  The first CD-ROM,  (the one linking to the file winxp.iso),
> >  appears
> >  >  to
> >  >  >  WinXP to be corrupted.  I'm able to mount that iso in the main OS
> >  so
> >  >  >  I'm thinking this is just some weird Xen/WinXP problem.  I'm not
> >  sure
> >  >  >  when this started as it is the WinXP Install disk and I don't
> >  >  normally
> >  >  >  need it.  It worked originally when I set this up.
> >  >  >
> >  >  >  The next and more pressing problem is that when I pop a CD into
> >  the
> >  >  >  CD-ROM drive, WinXP 99 times out of 100 doesn't realize a new disk
> >  >  has
> >  >  >  been inserted and doesn't update the listing.  This has made
> >  >  >  installing new software impossible.
> >  >  >
> >  >  >  Can someone please help?
> >  >  >
> >  >  >  Thanks in advance.
> >  >  >
> >  >  >  -J
> >  >  >
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> >  >  >
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