Hi,
first let me thank for your replies.
Further to your notes I did some investigation and tests, but was not
successful.
I am fairly familiar on pci-passthrough in xm or xl toolstack.
I assigned the adapter in question to pciback, entered the other-config
parameters and started the vm, but the vm did not see the drive.
Looking at the tutorial on XCP_Ubuntu_PCIPassthrough
<http://wiki.xen.org/wiki/XCP_Ubuntu_PCIPassthrough> I found that the
author references the xl command which is not available when you install
the cp-xapi in Ubuntu and set the toolstack to xapi. Both xe and xl
commands are available in XCP-Server, but there the udev SRs work anyway.
I also tried to create the udev SR:
xe sr-create content-type=disk name-label="Removable storage" type=udev
device-config:location=/dev/xapi/block
The answer was:
The SR could not be connected because the driver was not recognised.
driver: udev
It seems that there is some task needed that creates /dev/xapi/block ..
I think if I were successful on the latter task I could create the vdi
manually and attach it to the vm.
I will furter investigate ...
Regards
Paul
Am 07.12.2012 16:45, schrieb Gizmo Chicken:
Grant,
I had nearly finished drafting my reply to Paul when I noticed your reply.
As mentioned in my reply to Paul, I suspect that what Paul wants to do
(passthrough a USB device) could be accomplished via PCI passthrough
(of an entire USB controller) to an HVM guest. Does that sound right?
As I also mentioned in my reply to Paul, another poster (Donald van
der Wurf) attempted to adapt a tutorial found at
http://wiki.xen.org/wiki/XCP_Ubuntu_PCIPassthrough to his goal of
configuring PCI passthrough to an HVM guest in XCP. However, the
original poster wasn't successful, and so sought help from the group.
Your technical knowledge is clearly way beyond mine. If you feel that
it would be possible to configure PCI passthrough to an HVM guest in
XCP, would you consider creating a brief tutorial, or possibly
extending the above mentioned tutorial, to describe the procedure?
Any help from you (or others) would be /greatly/ appreciated.
Best regards,
GizmoChicken
---------- Forwarded message ----------
From: *Gizmo Chicken* <gizmochic...@gmail.com
<mailto:gizmochic...@gmail.com>>
Date: Fri, Dec 7, 2012 at 10:00 AM
Subject: Re: [Xen-API] Attach CD or Removable Devices
To: Paul Pridt <p.pr...@chello.at <mailto:p.pr...@chello.at>>
Cc: xen-api@lists.xen.org <mailto:xen-api@lists.xen.org>
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 9:50 AM, Grant McWilliams
<grantmasterfl...@gmail.com <mailto:grantmasterfl...@gmail.com>> wrote:
On Fri, Dec 7, 2012 at 3:18 AM, Paul Pridt <p.pr...@chello.at
<mailto:p.pr...@chello.at>> 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=="add",
PROGRAM!="/opt/xensource/libexec/check-device-sharing %k",
GOTO="end_xapi"
ACTION=="add", SYMLINK+="xapi/block/%k"
ACTION=="add", RUN+="/bin/sh -c
'/opt/xensource/libexec/local-device-change %k 2>&1 >/dev/null&'"
ACTION=="remove", 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.
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