nfd-worker errors reading speed parameter for paravirtualized devices

[mantramantra12]

What happened:
The nfd-worker pods on my cluster get this error every time they perform feature discovery:

"failed to read net iface attribute" err="read /host-sys/class/net/ifb0/speed: invalid argument" attributeName="speed"

I believe this is because the devices are paravirtual and so the speed parameter is nonsensical in this context. The file still exists however I think because the kernel puts it there.

What you expected to happen:
Feature discovery completes without error

How to reproduce it (as minimally and precisely as possible):
Run feature discovery on a node with paravirtual devices connected

Anything else we need to know?:
N/A

Environment:

• Kubernetes version (use kubectl version): 1.27.7
• Cloud provider or hardware configuration: Proxmox ubuntu VM
• OS (e.g: cat /etc/os-release): Ubuntu 22.04.3 LTS
• Kernel (e.g. uname -a): Linux 5.15.0-91-generic 101-Ubuntu SMP Tue Nov 14 13:30:08 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
• Install tools:
• Network plugin and version (if this is a network-related bug):
• Others:

[marquiz]

Fixed by #1557
/close

[k8s-ci-robot]

@marquiz: Closing this issue.

In response to this:

Fixed by #1557
/close

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[weikinhuang]

I'm still seeing this for the local interface

E0321 23:00:33.543500       1 network.go:152] "failed to read net iface attribute" err="read /host-sys/class/net/lo/speed: invalid argument" attributeName="speed"

[marquiz]

@weikinhuang which version of nfd are you running? The fix hasn't been released, yet. It'll be in the upcoming v0.16 release

[weikinhuang]

@marquiz oh, I thought the fix was in 0.15.2. I am on 0.15.3. If that's the case thanks for letting me know!