MAAS

Detect and identify NIC SR-IOV capability

Bug #1572740 reported by Christian Reis
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
MAAS
Fix Released
Wishlist
Andres Rodriguez
MAAS 2.0.0

Bug Description

NICs that present SR-IOV functionality have sysfs nodes that look like this:

   /sys/bus/pci/devices/0000\:07\:00.0/sriov_numvfs

That entry allows one to specify the number of virtual functions the device exposes.

More detail on this is at https://www.kernel.org/doc/Documentation/PCI/pci-iov-howto.txt

Upon commissioning MAAS should check whether each NIC has the sysfs sriov_numvfs entry and mark the NIC as SR-IOV capable.

A question is how to "mark the NIC" with this ability. Do we have extensible NIC metadata? Or is this just worth adding to the DB schema?

Related branches

lp:~andreserl/maas/lp1572740
Andres Rodriguez (community): Approve
Blake Rouse (community): Approve
Diff: 129 lines (+78/-0)
3 files modified
src/metadataserver/models/commissioningscript.py (+24/-0)
src/metadataserver/models/tests/test_commissioningscript.py (+38/-0)
src/provisioningserver/refresh/node_info_scripts.py (+16/-0)
Andres Rodriguez (andreserl)
Changed in maas:
milestone: none → next
status: New → Triaged
importance: Undecided → Wishlist
milestone: next → 2.1.0
Revision history for this message
Andres Rodriguez (andreserl) wrote :

Hi Kiko,

Do you have a system that reflects this? I was looking at a system with SR-IOV and couldnt; fine any references to sriov_numvfs

Revision history for this message
Andres Rodriguez (andreserl) wrote :

actually, nevermind, found them in:

/sys/devices/pci0000:00/0000:00:03.0/0000:08:00.0/sriov_numvfs

Revision history for this message
Andres Rodriguez (andreserl) wrote :

also:

net/eth5/phys_port_id:7cfe900300b725a1
net/eth5/address:7c:fe:90:b7:25:a1
net/eth4/phys_port_id:7cfe900300b725a0
net/eth4/address:7c:fe:90:b7:25:a0

Revision history for this message
Andres Rodriguez (andreserl) wrote :

root@velie:/sys/devices/pci0000:00/0000:00:03.0/0000:08:00.0# grep -sr 7c *
net/eth5/phys_port_id:7cfe900300b725a1
net/eth5/address:7c:fe:90:b7:25:a1
net/eth4/phys_port_id:7cfe900300b725a0
net/eth4/address:7c:fe:90:b7:25:a0

Newell Jensen (newell-jensen)
Changed in maas:
assignee: nobody → Newell Jensen (newell-jensen)
Andres Rodriguez (andreserl)
Changed in maas:
milestone: 2.1.0 → 2.0.0
assignee: Newell Jensen (newell-jensen) → Andres Rodriguez (andreserl)
MAAS Lander (maas-lander)
Changed in maas:
status: Triaged → Fix Committed
Andres Rodriguez (andreserl)
Changed in maas:
status: Fix Committed → Fix Released
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