Re: [Xen-API] Fwd: Attach CD or Removable Devices

[Ricardo <web@xxxxxxxxxxxxx>]

2012/12/9 Gizmo Chicken <gizmochicken@xxxxxxxxx>:
> 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.pridt@xxxxxxxxx> 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 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 <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 9:50 AM, Grant McWilliams
>> <grantmasterflash@xxxxxxxxx> wrote:
>>>
>>>
>>> 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=="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.
>>>


Hello everyone

I eh followed this tutorial

http://www.leandrocaetano.info/site/making-a-tape-drive-available-to-a-guest-via-scsi-on-xen/

http://support.citrix.com/article/CTX128426

When restarting the computer nothing happens

Best regards

Ricardo

_______________________________________________
Xen-api mailing list
Xen-api@xxxxxxxxxxxxx
http://lists.xen.org/cgi-bin/mailman/listinfo/xen-api