---------- Forwarded message ----------
From:
Gizmo Chicken <gizmochicken@xxxxxxxxx>
Date: Fri, Dec 7, 2012 at 10:00 AM
Subject: Re: [Xen-API] Attach CD or Removable Devices
To: Paul Pridt <
p.pridt@xxxxxxxxx>
Cc:
xen-api@xxxxxxxxxxxxx
Paul,
I suspect that what you want to do could be accomplished via PCI
passthrough to an HVM guest, which is the subject of a thread
having the subject "[Xen-API] XCP PCI Passthrough on HVM how
to?" that was started a few weeks ago. So you might want to
follow (and perhaps join in) that thread.
Without repeating the entirety of the above mentioned thread,
I'll note that the original poster referenced a tutorial found
at
http://wiki.xen.org/wiki/XCP_Ubuntu_PCIPassthrough
addressing PCI passthrough to a PV guest in XCP. However, the
original poster wasn't able to adapt that tutorial to his goal
of configuring PCI passthrough to an HVM guest in XCP, and so
sought help from the group.
Unlike the situation with the XAPI toolstack, the procedure for
configuring PCI passthrough to an HVM guest is relatively
straightforward with Xen when using the default toolstack. For
a discussion of both VGA and PCI passthrough in Xen when using
the default toolstack, see
http://forums.linuxmint.com/viewtopic.php?f=42&t=112013.
So if you don't mind leaving behind the comforts of XenCenter
for something like Virtual Machine Manager (virt-manager), maybe
Xen and its default toolstack is a better option for you.
I wish that I could be of more help.
Best regards,
GizmoChicken
P.S. I'm currently using Xen (and Virtual Machine Manager), but
I would switch to XCP (and XenCenter) if I could get PCI
passthough working in XCP. In such a case, I would passthrough
nearly all of my USB controllers, along with a second PCI video
card, to an HVM guest running Ubuntu desktop. That way I could
have, on a single machine, both a stable XCP server (which I
could leave up 24/7 to host my virtual servers) and also local
access to virtual machine having fully functional desktop (which
I could shut down when not in use). I imagine that many would
apprciate such functionality in XCP, so let's hope that the
developers consider adding such a feature to future releases of
XCP if not already possible via xe command line.
On Fri, Dec 7, 2012 at 3:18 AM, Paul Pridt
<p.pridt@xxxxxxxxx>
wrote:
Hi,
I am looking for a way to attach a physical CD
drive or a USB-attached hard drive to a VM.
I know that Citrix Xenserver does that through
special udev-SRs. There you even can attach an
internal hard drive with the help of an udev rule
that creates the vdi.
Has anybody a running solution?
My system is Ubuntu 12.04 with xcp-xapi.
--
Regards,
Paul
What is it exactly you're trying to accomplish?
I'd start by checking
/etc/udev/rules.d/58-xapi.rules for events and check
the scripts that it runs.
58-xapi.rules
# Skip devices which fail the local sharing
check (to filter out root/mounted devices)
ACTION=""
PROGRAM!="/opt/xensource/libexec/check-device-sharing
%k", GOTO="end_xapi"
ACTION="" SYMLINK+="xapi/block/%k"
ACTION="" RUN+="/bin/sh -c
'/opt/xensource/libexec/local-device-change %k
2>&1 >/dev/null&'"
ACTION="" RUN+="/bin/sh -c
'/opt/xensource/libexec/local-device-change %k
2>&1 >/dev/null&'"
Part of
/opt/xensource/libexec/local-device-change
for SR in `xe sr-list type=udev
sm-config:type=block uuid=${LOCAL_SR} params=uuid
--minimal`
do
xe vdi-introduce uuid=`uuidgen`
sr-uuid=${SR} type=user
location=/dev/xapi/block/${DEVICE}
done
Read the whole scripts of course but this might
get you started.
