<div dir="ltr"><br><div>Thank you Moshe for your explanation. </div><div> </div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jun 8, 2016 at 11:30 AM, Moshe Levi <span dir="ltr"><<a href="mailto:moshele@mellanox.com" target="_blank">moshele@mellanox.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Chinmaya Dwibedy [mailto:<a href="mailto:ckdwibedy@gmail.com" target="_blank">ckdwibedy@gmail.com</a>]
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<b>Sent:</b> Wednesday, June 08, 2016 8:39 AM<br>
<b>To:</b> Moshe Levi <<a href="mailto:moshele@mellanox.com" target="_blank">moshele@mellanox.com</a>><br>
<b>Cc:</b> <a href="mailto:openstack@lists.openstack.org" target="_blank">openstack@lists.openstack.org</a><br>
<b>Subject:</b> Re: [Openstack] Issue with dev_type: type-PCI using openstack-mitaka release on host (Cent OS 7.2)<u></u><u></u></span></p>
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Hi Moshe,<u></u><u></u></p>
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<u></u> <u></u></p>
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Thank you for the clarification. I want to passthrough PCI device . Thus I have configured the “device_type”: “type-PCI” in nova.conf. But it shows “dev_type: type-PF” in MariaDB and nova.compute log. I think it should show “dev_type: type-PCI”. Am I missing
anything ?<u></u><u></u></p>
</span><p class="MsoNormal">This will do what you called passthrough you PCI device is just indicated that your PCI has is actually Physical Function (you are passing (Ethernet controller) )<u></u><u></u></p>
<p class="MsoNormal">So Libvirt will do this:<u></u><u></u></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""><hostdev mode='subsystem' type='pci' managed='yes'><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""> <source><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New""></hostdev><u></u><u></u></span></p>
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Regards,<u></u><u></u></p>
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Chinmaya<u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:.5in">On Wed, Jun 8, 2016 at 10:58 AM, Moshe Levi <<a href="mailto:moshele@mellanox.com" target="_blank">moshele@mellanox.com</a>> wrote:<u></u><u></u></p>
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<span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span><u></u><u></u></p>
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<b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Chinmaya Dwibedy [mailto:<a href="mailto:ckdwibedy@gmail.com" target="_blank">ckdwibedy@gmail.com</a>]
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<b>Sent:</b> Wednesday, June 08, 2016 7:43 AM<br>
<b>To:</b> <a href="mailto:openstack@lists.openstack.org" target="_blank">openstack@lists.openstack.org</a><br>
<b>Subject:</b> [Openstack] Issue with dev_type: type-PCI using openstack-mitaka release on host (Cent OS 7.2)</span><u></u><u></u></p>
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Hi All,<u></u><u></u></p>
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<u></u><u></u></p>
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I want the Ethernet Card to be used for PCI Passthrough device. Note that, I have installed openstack-mitaka release on host (Cent OS 7.2). <u></u><u></u></p>
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<u></u><u></u></p>
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[root@localhost ~(keystone_admin)]# lspci -nn | grep 154d<u></u><u></u></p>
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07:00.0 Ethernet controller [0200]: Intel Corporation Ethernet 10G 2P X520 Adapter [8086:154d] (rev 01)<u></u><u></u></p>
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07:00.1 Ethernet controller [0200]: Intel Corporation Ethernet 10G 2P X520 Adapter [8086:154d] (rev 01)<u></u><u></u></p>
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[root@localhost ~(keystone_admin)]#<u></u><u></u></p>
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<u></u><u></u></p>
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Here goes the configurations done in nova.conf <u></u><u></u></p>
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<u></u><u></u></p>
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pci_alias={"vendor_id":"8086", "product_id":"154d", "device_type":"type-PCI", "name":"a1"}<u></u><u></u></p>
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pci_passthrough_whitelist = [{"vendor_id":"8086","product_id":"154d"}]<u></u><u></u></p>
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scheduler_default_filters=RetryFilter,AvailabilityZoneFilter,RamFilter,ComputeFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,CoreFilter,PciPassthroughFilter<u></u><u></u></p>
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<u></u><u></u></p>
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<u></u><u></u></p>
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<u></u><u></u></p>
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MariaDB [nova]> select pci_stats from compute_nodes;<u></u><u></u></p>
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+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+<u></u><u></u></p>
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| pci_stats |<u></u><u></u></p>
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+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+<u></u><u></u></p>
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| {"nova_object.version": "1.1", "nova_object.changes": ["objects"], "<a href="http://nova_object.name" target="_blank">nova_object.name</a>": "PciDevicePoolList", "nova_object.data": {"objects": [{"nova_object.version": "1.1", "nova_object.changes": ["count",
"numa_node", "vendor_id", "product_id", "tags"], "<a href="http://nova_object.name" target="_blank">nova_object.name</a>": "PciDevicePool", "nova_object.data": {"count": 2, "numa_node": 0, "vendor_id": "8086", "product_id": "154d", "tags": {"dev_type": "type-PF"}},
"nova_object.namespace": "nova"}]}, "nova_object.namespace": "nova"} |<u></u><u></u></p>
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+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+<u></u><u></u></p>
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1 row in set (0.00 sec)<u></u><u></u></p>
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<u></u><u></u></p>
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MariaDB [nova]> select count(*) from pci_devices where status="available" and deleted=0;<u></u><u></u></p>
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+----------+<u></u><u></u></p>
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| count(*) |<u></u><u></u></p>
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+----------+<u></u><u></u></p>
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| 2 |<u></u><u></u></p>
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+----------+<u></u><u></u></p>
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1 row in set (0.00 sec)<u></u><u></u></p>
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<u></u><u></u></p>
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MariaDB [nova]><u></u><u></u></p>
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<u></u><u></u></p>
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MariaDB [nova]> SELECT * FROM nova.pci_devices;<u></u><u></u></p>
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+---------------------+---------------------+---------------------+---------+----+-----------------+--------------+------------+-----------+----------+------------------+-----------------+-----------+------------+---------------+------------+-----------+-------------+<u></u><u></u></p>
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| created_at | updated_at | deleted_at | deleted | id | compute_node_id | address | product_id | vendor_id | dev_type | dev_id | label | status | extra_info | instance_uuid | request_id | numa_node | parent_addr
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+---------------------+---------------------+---------------------+---------+----+-----------------+--------------+------------+-----------+----------+------------------+-----------------+-----------+------------+---------------+------------+-----------+-------------+<u></u><u></u></p>
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| 2016-06-07 09:27:49 | 2016-06-08 04:24:46 | NULL | 0 | 3 | 1 | 0000:07:00.0 | 154d | 8086 | type-PF | pci_0000_07_00_0 | label_8086_154d | available | {} | NULL | NULL | 0 | NULL
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| 2016-06-07 09:27:49 | 2016-06-08 04:24:46 | NULL | 0 | 4 | 1 | 0000:07:00.1 | 154d | 8086 | type-PF | pci_0000_07_00_1 | label_8086_154d | available | {} | NULL | NULL | 0 | NULL
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+---------------------+---------------------+---------------------+---------+----+-----------------+--------------+------------+-----------+----------+------------------+-----------------+-----------+------------+---------------+------------+-----------+-------------+<u></u><u></u></p>
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4 rows in set (0.00 sec)<u></u><u></u></p>
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<u></u><u></u></p>
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MariaDB [nova]><u></u><u></u></p>
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<u></u><u></u></p>
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There is a check in Nova ( get_device_type in <a href="https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py" target="_blank">
https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py</a>) that determines if a given PCI device is:<u></u><u></u></p>
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1)<span style="font-size:7.0pt"> </span>A normal PCI device,<u></u><u></u></p>
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2)<span style="font-size:7.0pt"> </span>An SR-IOV physical function (PF); or<u></u><u></u></p>
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3)<span style="font-size:7.0pt"> </span>An SR-IOV virtual function (VF).<u></u><u></u></p>
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If it's a normal PCI device or a virtual function it's considered for passthrough, if it's a PF it's not (considered to be owned by the host/hypervisor).<u></u><u></u></p>
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No, you can passthrough PCI, PF and VF <u></u><u></u></p>
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<u></u><u></u></p>
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What I understand, currently it is not possible to pass through a physical function to an OpenStack instance. Furthermore I have configured the “device_type”: “type-PCI” as stated above in nova.conf. Then why it shows “dev_type: type-PF” in MariaDB?
<u></u><u></u></p>
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If you want to passthrough PF you should change the pci_alias to "device_type":"type-PF"<u></u><u></u></p>
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Can anyone please let me know is it a bug in openstack-mitaka release or I have missed anything ? Please feel free to let me know if additional information is needed.
<u></u><u></u></p>
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<u></u><u></u></p>
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Regards,<u></u><u></u></p>
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Chinmaya<u></u><u></u></p>
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