Hi Gizmo,
thank you for your efforts in helping me.
I've been trying various combinations, one of them was your last
suggestion - with no success.
Since that costs me too much time I think I will give up and wait until
xcp-xapi in debian will be mature.
In the meantime Citrix Xenserver is the system of choice for my customers.
Best regards,
Paul
Am 10.12.2012 00:11, schrieb Gizmo Chicken:
Paul,
I'm not sure about the PCI passthrough tutorial, but I hope that what
I provide below will be of some help.
First, if I recall correctly, you'll need to add "iommu=1" into the
Xen commandline. If using grub, you can edit your /etc/default/grub
file as root and to include at least the following or similar:
GRUB_CMDLINE_XEN="iommu=1"
As for xe commands, the PCI passthrough command in xe takes the
following form:
xe vm-param-set other-config:pci=0/<pci-id#> uuid=<uuid>
Or if you want to passthrough multiple PCI devices (or a multifunction
device), the PCI passthrough command in xe takes the following form:
xe vm-param-set
other-config:pci=0/<pci-id#>,1/<pci-id#>,2/<pci-id#>,3/<pci-id#>,4/<pci-id#>
uuid=<uuid>
You'll need to replace <pci-id#> and <uuid> with appropriate values.
Here's an example showing the xe command for the passthrough of 2 PCI
devices:
xe vm-param-set other-config:pci=0/0000:00:1d.0,1/0000:00:1d.1
uuid=d6eb559e-af70-6f8e-d10f-62fc9f73db89
Of course, the your values for <pci-id#> and <uuid> will differ from
the above example.
DISCLAIMER: Although I hope to set up PCI passthrough on an XCP
system in the near future, as of now, I have only configured PCI
passthrough on a system that runs vanilla Xen. So the above is based
mostly on what I have gleaned from forum posts and replies, not on my
own personal experience.
I invite others who know more about PCI passthrough to correct/clarify
any of the above.
Best regards,
GizmoChicken
On Sat, Dec 8, 2012 at 9:20 AM, Paul Pridt <p.pr...@chello.at
<mailto:p.pr...@chello.at>> wrote:
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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