[Xen-users] CDROM access under GPLPV

[Matthias Reif <mattreif@xxxxxxxxxxxxx>]

Hi All,

Has anyone worked out a way of accessing
a CDROM from a Windows guest while using the GPLPV drivers?

I don't really mind whether access is
mapped to the physical device or an ISO image, as long as I can change
the media without having to reboot the domU.

My configuration:

dom0 = CentOS 5.3, Xen 3.3.1
domU = Windows Server 2008 64-bit, GPLPV
version 0.10.0.69

Tried the following disk specs in the
domU config - with the same result:

disk = [ 'phy:/dev/cciss/c0d0p3,xvda,w',
'phy:/dev/hda,hdc:cdrom,r' ]
disk = [ 'phy:/dev/cciss/c0d0p3,xvda,w',
'file:/iso/cdrom.iso,hdc:cdrom,r' ]

What I can see under Windows is

* a yellow exclamation mark in Device
Manager on device "Intel 82371SB PCI Bus Master IDE Controller"

* two devices "Xen Block Device
Driver" under Storage Controllers

* no sign of a CDROM drive in either
Explorer or Disk Management


# xenstore-ls /local/domain/19/device
...
vbd = ""
 51712 = ""
  backend-id = "0"
  virtual-device = "51712"
  device-type = "disk"
  state = "4"
  backend = "/local/domain/0/backend/vbd/19/51712"
  ring-ref = "16383"
  event-channel = "8"
 5632 = ""
  backend-id = "0"
  virtual-device = "5632"
  device-type = "cdrom"
  state = "1"
  backend = "/local/domain/0/backend/vbd/19/5632"
...

# xenstore-ls /local/domain/0/backend/vbd/19/5632
domain = "basil"
frontend = "/local/domain/19/device/vbd/5632"
uuid = "a59853e4-57ec-9d02-bd84-f468d41856ca"
dev = "hdc"
state = "2"
params = "/dev/hda"
mode = "r"

>
frontend-id = "19"
type = "phy"
physical-device = "3:0"
hotplug-status = "connected"


Thank you.
Matthias



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