[Bug 2002445] [NEW] udev NIC renaming race with mlx5_core driver

[Nick Rosbrook]

Public bug reported:

[Impact]
On systems with mellanox NICs, udev's NIC renaming races with the mlx5_core driver's own configuration of subordinate interfaces. When the kernel wins this race, the device cannot be renamed as udev has attempted, and this causes systemd-network-online.target to timeout waiting for links to be configured. This ultimately results in boot being delayed by about 2 minutes.

[Test Plan]
TODO

[Where problems could occur]
The patches effectively make it so that if a interface cannot be renamed from udev, then the new name is left as an alternative name as a fallback. If problems occur, it would be related to device renaming, and particularly related to the devices alternative names.

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  udev NIC renaming race with mlx5_core driver

Status in systemd package in Ubuntu:
  New

Bug description:
  [Impact]
  On systems with mellanox NICs, udev's NIC renaming races with the mlx5_core driver's own configuration of subordinate interfaces. When the kernel wins this race, the device cannot be renamed as udev has attempted, and this causes systemd-network-online.target to timeout waiting for links to be configured. This ultimately results in boot being delayed by about 2 minutes.

  [Test Plan]
  TODO

  [Where problems could occur]
  The patches effectively make it so that if a interface cannot be renamed from udev, then the new name is left as an alternative name as a fallback. If problems occur, it would be related to device renaming, and particularly related to the devices alternative names.

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