Thread (3 messages) 3 messages, 2 authors, 2019-06-06

RE: [PATCH] revert async probing of VMBus network devices.

From: Haiyang Zhang <haiyangz@microsoft.com>
Date: 2019-06-05 18:54:22
Also in: linux-hyperv

-----Original Message-----
From: linux-hyperv-owner@vger.kernel.org <linux-hyperv-
owner@vger.kernel.org> On Behalf Of Stephen Hemminger
Sent: Wednesday, June 5, 2019 2:51 PM
To: netdev@vger.kernel.org
Cc: linux-hyperv@vger.kernel.org; Stephen Hemminger
[off-list ref]
Subject: [PATCH] revert async probing of VMBus network devices.

Doing asynchronous probing can lead to reordered network device names.
And because udev doesn't have any useful information to construct a
persistent name, this causes VM's to sporadically boot with reordered device
names and no connectivity.

This shows up on the Ubuntu image on larger VM's where 30% of the time
eth0 and eth1 get swapped.

Note: udev MAC address policy is disabled on Azure images because the
netvsc and PCI VF will have the same mac address.

Fixes: af0a5646cb8d ("use the new async probing feature for the hyperv
drivers")
Signed-off-by: Stephen Hemminger <redacted>
---
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
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