Dear Alex,
Thanks for your response. Somehow we are expecting interrupts as a cause,
but we've also tried pci=nomsi kernel setting, also without any success. I
still dont understand why the driver stucks on resetting the hardware.
I've also tried removing the igb driver and loading it again, without
success. Should such an operation reset the interface and bring it back
alive?
Thanks,
Kojedzinszky Richárd
Euronet Magyarorszag Informatika Zrt.
On Mon, 28 May 2018, Alexander Duyck wrote:
Date: Mon, 28 May 2018 10:39:40 -0700
From: Alexander Duyck <alexander.du...@gmail.com>
To: Kojedzinszky Richárd <kojedzinszky.rich...@euronetrt.hu>
Cc: e1000-devel@lists.sourceforge.net
Subject: Re: [E1000-devel] random igb timeouts
On Mon, May 28, 2018 at 12:09 AM, Kojedzinszky Richárd
<kojedzinszky.rich...@euronetrt.hu> wrote:
Dear developers,
We have a X8DTU Supermicro system with onboard lan gigabit interfaces, we
run debian stretch on it, we use it for virtualisation with xen.
Unfortunately, we periodically end up with igb tx timeouts on the host, the
driver starts resetting the interface without success, the only solution is
to reset the host.
When you say you are seeing timeouts I assume you mean dev_watchdog
messages, and not the driver Tx hang messages.
I have seen similar issues in the past and it is due to MSI-X
interrupts being handled correctly by either Dom0 or Xen. You might
try monitoring /proc/interrupts for the interface in question and see
if interrupts are being delivered or not. You should see at least 1
interrupt every 2 seconds on the interface if it is up. If the
interrupts are the issue then you might check with the Xen community
to see if they are aware of any interrupt issues. The other option is
to look at disabling MSI-X interrupts in the system to force the
device to use either MSI or legacy IRQ.
Thanks.
- Alex
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