Public bug reported:
While testing Ubuntu 18.10 daily from cloud-images repo, on Azure, we
discovered that accelerated networking wasn’t working inside the VM.
No VF shows up inside the VM and lspci didn’t show any Mellanox drivers in use.
We tested the daily build on Hyper-V also, but there the Mellanox VF is
functional, with the same mlx4 drivers.
To give more details about this:
• No mellanox logs are showing up in dmesg or syslog.
• Modinfo mlx4_core/mlx4_en finds the module, but lsmod doesn’t show it
as loaded, although Accelerated Networking is enabled for the Azure VM, so this
should happen transparently.
• Modprobe -r mlx4_core && modprobe mlx4_core is giving 0 exit code, but
nothing really happens. And no Mellanox messages are logged in dmesg/syslog.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: azure
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https://bugs.launchpad.net/bugs/1794477
Title:
[Azure] Accelerated networking broken in 18.10 daily
Status in linux package in Ubuntu:
New
Bug description:
While testing Ubuntu 18.10 daily from cloud-images repo, on Azure, we
discovered that accelerated networking wasn’t working inside the VM.
No VF shows up inside the VM and lspci didn’t show any Mellanox drivers in
use.
We tested the daily build on Hyper-V also, but there the Mellanox VF is
functional, with the same mlx4 drivers.
To give more details about this:
• No mellanox logs are showing up in dmesg or syslog.
• Modinfo mlx4_core/mlx4_en finds the module, but lsmod doesn’t show it
as loaded, although Accelerated Networking is enabled for the Azure VM, so this
should happen transparently.
• Modprobe -r mlx4_core && modprobe mlx4_core is giving 0 exit code, but
nothing really happens. And no Mellanox messages are logged in dmesg/syslog.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1794477/+subscriptions
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