Open Stack

Hi Moshe,


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 ?


Regards,

Chinmaya

On Wed, Jun 8, 2016 at 10:58 AM, Moshe Levi <moshele at mellanox.com> wrote:

>
>
>
>
> *From:* Chinmaya Dwibedy [mailto:ckdwibedy at gmail.com]
> *Sent:* Wednesday, June 08, 2016 7:43 AM
> *To:* openstack at lists.openstack.org
> *Subject:* [Openstack] Issue with dev_type: type-PCI using
> openstack-mitaka release on host (Cent OS 7.2)
>
>
>
> Hi All,
>
>
>
> 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).
>
>
>
> [root at localhost ~(keystone_admin)]# lspci -nn | grep 154d
>
> 07:00.0 Ethernet controller [0200]: Intel Corporation Ethernet 10G 2P X520
> Adapter [8086:154d] (rev 01)
>
> 07:00.1 Ethernet controller [0200]: Intel Corporation Ethernet 10G 2P X520
> Adapter [8086:154d] (rev 01)
>
> [root at localhost ~(keystone_admin)]#
>
>
>
> Here goes the configurations done in nova.conf
>
>
>
> pci_alias={"vendor_id":"8086", "product_id":"154d",
> "device_type":"type-PCI", "name":"a1"}
>
> pci_passthrough_whitelist =  [{"vendor_id":"8086","product_id":"154d"}]
>
>
> scheduler_default_filters=RetryFilter,AvailabilityZoneFilter,RamFilter,ComputeFilter,ComputeCapabilitiesFilter,ImagePropertiesFilter,CoreFilter,PciPassthroughFilter
>
>
>
>
>
>
>
> MariaDB [nova]> select pci_stats from compute_nodes;
>
>
> +-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
>
> |
> pci_stats
>                                                                                                                                                                                                                                         |
>
>
> +-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
>
> | {"nova_object.version": "1.1", "nova_object.changes": ["objects"], "
> nova_object.name": "PciDevicePoolList", "nova_object.data": {"objects":
> [{"nova_object.version": "1.1", "nova_object.changes": ["count",
> "numa_node", "vendor_id", "product_id", "tags"], "nova_object.name":
> "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"} |
>
>
> +-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
>
> 1 row in set (0.00 sec)
>
>
>
> MariaDB [nova]> select count(*) from pci_devices where status="available"
> and deleted=0;
>
> +----------+
>
> | count(*) |
>
> +----------+
>
> |        2 |
>
> +----------+
>
> 1 row in set (0.00 sec)
>
>
>
> MariaDB [nova]>
>
>
>
> MariaDB [nova]> SELECT * FROM nova.pci_devices;
>
>
> +---------------------+---------------------+---------------------+---------+----+-----------------+--------------+------------+-----------+----------+------------------+-----------------+-----------+------------+---------------+------------+-----------+-------------+
>
> | 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 |
>
>
> +---------------------+---------------------+---------------------+---------+----+-----------------+--------------+------------+-----------+----------+------------------+-----------------+-----------+------------+---------------+------------+-----------+-------------+
>
> | 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        |
>
> | 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        |
>
>
> +---------------------+---------------------+---------------------+---------+----+-----------------+--------------+------------+-----------+----------+------------------+-----------------+-----------+------------+---------------+------------+-----------+-------------+
>
> 4 rows in set (0.00 sec)
>
>
>
> MariaDB [nova]>
>
>
>
> There is a check in Nova ( get_device_type in
> https://github.com/openstack/nova/blob/master/nova/virt/libvirt/driver.py)
> that determines if a given PCI device is:
>
> 1)      A normal PCI device,
>
> 2)      An SR-IOV physical function (PF); or
>
> 3)      An SR-IOV virtual function (VF).
>
> 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).
>
> No, you can passthrough PCI, PF and VF
>
>
>
> 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?
>
> If you want to passthrough PF  you should change the pci_alias to
> "device_type":"type-PF"
>
> 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.
>
>
>
> Regards,
>
> Chinmaya
>
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