[ovirt-users] PCI Passthrough problem

[Martin Polednik]

On 07/06/16 19:04 +0200, Lionel Caignec wrote:
>Hi i'm coworker of Mr Chapelle,
>
>Thank you for your reply.
>
>so if i understand we need to "downgrade" our ovirt engine which is in version 3.6.6.x to version 3.6.5?
>But how can we do that?

You would only need to downgrade the 2 hosts to 3.6.5 VDSM. But
thinking of it, you could instead upgrade to 3.6.7 (rc2) - the bug is
fixed there.

>Lionel Caignec.
>
>
>
>----- Mail original -----
>De: "Martin Polednik" <mpolednik at redhat.com>
>À: "chapelle" <chapelle at cines.fr>
>Cc: "users" <users at ovirt.org>, "honvault" <honvault at cines.fr>
>Envoyé: Mardi 7 Juin 2016 17:11:10
>Objet: Re: [ovirt-users] PCI Passthrough problem
>
>On 07/06/16 16:50 +0200, Jérôme Chapelle wrote:
>>We are no more able to give a pci device to one VM.
>>Here is the process we used to assign one device to one VM:
>>- Click on the VM, and then on the tab "Host devices"
>>- In the tab, click on "pin to host" and select the host that will give the pci device
>>- Click on "add device", in the window appear all the pci devices: choose the pci card you wish (ex. pci_0000_83_00_0 pci_0000_83_00_1) and then click on the gray arrow to assign this device to the VM
>>- Click on ok
>>- boot the VM.
>>The problem is that in the window that appears, there is not a single pci device listed (there should be many listed).
>>I checked first: the IOMMU setting is set in the kernel.
>>
>>Our environment:
>>We have two HV running CentOs7.
>>Each of them have three fiber channel cards. First card is connected to a disk array, second one to the first tape library and third one to another tape library.
>>We used to give the second card to a VM1, and the third card to another VM2. Both VMs ran on one HV or on the other in the past: everything was fine.
>>What happened:
>>Today we add to upgrade one of the HV (HV1). Both VMs ran on this HV1. We upgraded then restarted the HV1.
>>Then I edited the second VM2 in order to remove card from HV1. Then I tried to add the card from HV2 to this VM2: the list of "host devices" is empty.
>>I started the VM1: it works fine (I didn't change anything on it).
>
>Hello!
>
>I'm afraid you have hit the bug [1]. For hosts where you need host
>devices, the best solution is most likely not upgrading them to 3.6.6
>for now.
>
>[1] https://bugzilla.redhat.com/show_bug.cgi?id=1341299
>
>>
>>--
>>
>>
>>	
>>	
>>	
>>		Jérôme Chapelle
>>		C entre I nformatique N ational de l' E nseignement S upérieur
>>950 rue de Saint Priest
>>34 097 M ONTPELLIER Cedex 5
>>
>>		Tél. 	04 67 14 14 14
>>		eMail 	chapelle at cines.fr
>>
>
>>_______________________________________________
>>Users mailing list
>>Users at ovirt.org
>>http://lists.ovirt.org/mailman/listinfo/users
>
>_______________________________________________
>Users mailing list
>Users at ovirt.org
>http://lists.ovirt.org/mailman/listinfo/users