I can reproduce the issue in Azure with Ubuntu 18.04 and the kernel
linux-azure-edge 4.18.0.1004.5 from bionic-proposed.
I use an instance of type "Standard F4s_v2 (4 vcpus, 8 GB memory)"
I launch the instance and get the 4.15.0-1030-azure kernel:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic
$ uname -a
Linux davecore-an 4.15.0-1030-azure #31-Ubuntu SMP Tue Oct 30 18:35:53 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
$ dmesg | grep -i mella
[ 27.398120] mlx4_core: Mellanox ConnectX core driver v4.0-0
[ 27.425228] <mlx4_ib> mlx4_ib_add: mlx4_ib: Mellanox ConnectX InfiniBand
driver v4.0-0
[ 27.658916] mlx4_en: Mellanox ConnectX HCA Ethernet driver v4.0-0
$ dpkg -l | grep linux-azure
ii linux-azure 4.15.0.1030.30
amd64 Complete Linux kernel for Azure systems.
ii linux-azure-cloud-tools-4.15.0-1030 4.15.0-1030.31
amd64 Linux kernel version specific cloud tools for version
4.15.0-1030
ii linux-azure-headers-4.15.0-1030 4.15.0-1030.31
all Header files related to Linux kernel version 4.15.0
ii linux-azure-tools-4.15.0-1030 4.15.0-1030.31
amd64 Linux kernel version specific tools for version 4.15.0-1030
$ lsmod | grep -i mlx
mlx4_en 114688 0
$ lspci
0000:00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host
bridge (AGP disabled) (rev 03)
0000:00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 01)
0000:00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
0000:00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02)
0000:00:08.0 VGA compatible controller: Microsoft Corporation Hyper-V virtual
VGA
0001:00:02.0 Ethernet controller: Mellanox Technologies MT27500/MT27520 Family
[ConnectX-3/ConnectX-3 Pro Virtual Function]
I then enable bionic-proposed and install the linux-azure-edge kernel
and reboot. I can't see the Mellanox device anymore:
$ dmesg | grep -i mella
$ uname -a
Linux davecore-an 4.18.0-1004-azure #4~18.04.1-Ubuntu SMP Thu Oct 25 14:25:41
UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
$ dpkg -l | grep linux-azure
ii linux-azure 4.15.0.1030.30
amd64 Complete Linux kernel for Azure systems.
ii linux-azure-cloud-tools-4.15.0-1030 4.15.0-1030.31
amd64 Linux kernel version specific cloud tools for version
4.15.0-1030
ii linux-azure-edge 4.18.0.1004.5
amd64 Complete Linux kernel for Azure systems.
ii linux-azure-edge-cloud-tools-4.18.0-1004 4.18.0-1004.4~18.04.1
amd64 Linux kernel version specific cloud tools for version
4.18.0-1004
ii linux-azure-edge-tools-4.18.0-1004 4.18.0-1004.4~18.04.1
amd64 Linux kernel version specific tools for version
4.18.0-1004
ii linux-azure-headers-4.15.0-1030 4.15.0-1030.31
all Header files related to Linux kernel version 4.15.0
ii linux-azure-headers-4.18.0-1004 4.18.0-1004.4~18.04.1
all Header files related to Linux kernel version 4.18.0
ii linux-azure-tools-4.15.0-1030 4.15.0-1030.31
amd64 Linux kernel version specific tools for version
4.15.0-1030
$ lspci
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge
(AGP disabled) (rev 03)
00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 01)
00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02)
00:08.0 VGA compatible controller: Microsoft Corporation Hyper-V virtual VGA
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-azure in Ubuntu.
https://bugs.launchpad.net/bugs/1794477
Title:
Accelerated networking (SR-IOV VF) broken in 18.10 daily
Status in linux package in Ubuntu:
In Progress
Status in linux-azure package in Ubuntu:
Confirmed
Status in linux source package in Cosmic:
In Progress
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.
- There are no entries in the logs to show anything about the drivers or
netvsc/pci-hyperv that might relate to this issue.
Kernel: 4.18.0-7-generic
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1794477/+subscriptions
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