From: Chinmaya Dwibedy [mailto:ckdwib...@gmail.com]
Sent: Wednesday, June 08, 2016 8:39 AM
To: Moshe Levi <mosh...@mellanox.com>
Cc: openstack@lists.openstack.org
Subject: Re: [Openstack] Issue with dev_type: type-PCI using openstack-mitaka
release on host (Cent OS 7.2)
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 ?
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) )
So Libvirt will do this:
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000'
bus='0x06'
slot='0x12'
function='0x5'/>
</source>
</hostdev>
Regards,
Chinmaya
On Wed, Jun 8, 2016 at 10:58 AM, Moshe Levi
<mosh...@mellanox.com<mailto:mosh...@mellanox.com>> wrote:
From: Chinmaya Dwibedy [mailto:ckdwib...@gmail.com<mailto:ckdwib...@gmail.com>]
Sent: Wednesday, June 08, 2016 7:43 AM
To: openstack@lists.openstack.org<mailto:openstack@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@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@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<http://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<http://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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