[ops] Any experience with DELL M640 and BCM57840 network card ?

Mohammed Naser mnaser at vexxhost.com
Tue Mar 26 18:45:26 UTC 2019


I totally ran into this issue here.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1643558

It seems another contributor ran into this.  Are you deploying using Kolla?

On Tue, Mar 26, 2019 at 1:29 PM Massimo Sgaravatto
<massimo.sgaravatto at gmail.com> wrote:
>
> Hi
>
> Did someone try using DELL M640 with BCM57840 network card as compute nodes ?
>
> I am asking because we are adding a new compute node with such hw configuration to our OpenStack Ocata installation (with CentOS 7.6).
>
>
> Each tiime we create a VM on this compute node, the compute node crashes (bnx2x_panic_dump).
> Not clear which specific event triggers the problem.
>
> It doesn't seem a hw problem (e.g. iperf works without problems).
>
> We are using the same network card, but on different servers (e.g. on some M630 systems).
>
>
> If we disable the tx-checksum-ipv4 on the data network interface (i.e.  "ethtool -K em3 tx-checksum-ipv4 off") we don't see anymore the problem.
>
> Thanks, Massimo
>
>



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