From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-vk0-f69.google.com (mail-vk0-f69.google.com [209.85.213.69]) by kanga.kvack.org (Postfix) with ESMTP id 696E46B0717 for ; Fri, 4 Aug 2017 03:25:51 -0400 (EDT) Received: by mail-vk0-f69.google.com with SMTP id g189so3506338vke.9 for ; Fri, 04 Aug 2017 00:25:51 -0700 (PDT) Received: from SMTP-EMEA01A.ASG.COM (smtp-emea01a.asg.com. [193.240.199.23]) by mx.google.com with ESMTPS id i135si491990vkd.19.2017.08.04.00.25.50 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 04 Aug 2017 00:25:50 -0700 (PDT) Received: from SMTP-EMEA01A.ASG.COM (localhost.localdomain [127.0.0.1]) by localhost (Email Security Appliance) with SMTP id 943F237812D_9842274B for ; Fri, 4 Aug 2017 07:29:56 +0000 (GMT) Received: from smtp-emea01.asg.com (unknown [10.33.0.47]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by SMTP-EMEA01A.ASG.COM (Sophos Email Appliance) with ESMTPS id 583753754A8_9842273F for ; Fri, 4 Aug 2017 07:29:55 +0000 (GMT) From: Herve Kergourlay Subject: Network issue Date: Fri, 4 Aug 2017 07:25:44 +0000 Message-ID: <3ad9dda84c2a4f859c602e437a36421f@asg.com> Content-Language: fr-FR Content-Type: multipart/alternative; boundary="_000_3ad9dda84c2a4f859c602e437a36421fasgcom_" MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: "linux-mm@kvack.org" --_000_3ad9dda84c2a4f859c602e437a36421fasgcom_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi We have a customer suffering from network issues on a server in a context o= f RAC cluster / https://en.wikipedia.org/wiki/Oracle_RAC The symptom is the following ; A call to getaddrinfo on a server name fails after some times in production= , with errno=3D11 "Resource temporarily unavailable" The customer have a second cluster node in the same conditions without the = issue. When the issue occurs we can see in system logs the following sequence Jan 24 14:22:06 raca-srv2 kernel: device eth0 entered promiscuous mode Jan 24 14:22:06 raca-srv2 kernel: device eth2 entered promiscuous mode Jan 24 14:22:06 raca-srv2 kernel: device eth9 entered promiscuous mode Jan 24 14:22:06 raca-srv2 kernel: device eth8 entered promiscuous mode Jan 24 14:22:06 raca-srv2 kernel: device eth1 entered promiscuous mode Jan 24 14:22:06 raca-srv2 kernel: device eth1 left promiscuous mode Jan 24 14:22:08 raca-srv2 kernel: device eth2 left promiscuous mode Jan 24 14:22:29 raca-srv2 kernel: device eth8 left promiscuous mode Jan 24 14:22:35 raca-srv2 kernel: device eth9 left promiscuous mode Jan 24 14:22:39 raca-srv2 kernel: nr_pdflush_threads exported in /proc is s= cheduled for removal Jan 24 14:22:39 raca-srv2 kernel: sysctl: The scan_unevictable_pages sysctl= /node-interface has been disabled for lack of a legitimate use case. If you= have one, please send an email to linux-mm@kvack.org. Jan 24 14:22:45 raca-srv2 kernel: device eth0 left promiscuous mode Jan 24 14:26:46 raca-srv2 kernel: bnx2x 0000:88:00.0 eth8: NIC Link is Down Jan 24 14:26:46 raca-srv2 kernel: bonding: bond0: link status definitely do= wn for interface eth8, disabling it Jan 24 14:26:46 raca-srv2 kernel: bonding: bond0: making interface eth0 the= new active one. As your email address is explicitly notified, I send you this email. I hope= you will be able to us to understand what is happening If you have questions on the context, I will be pleased to give you any use= full answers needed. Regards Herv=E9 --_000_3ad9dda84c2a4f859c602e437a36421fasgcom_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi

We have a customer suffering from network issues on a server in a contex= t of RAC cluster / https://en.wikipedia.org/wiki/Oracle_RAC

The symptom is the following ;

A call to getaddrinfo on a server name fails after some times in product= ion, with errno=3D11 "Resource temporarily unavailable"

The customer have a second cluster node in the same conditions without t= he issue.

When the issue occurs we can see in system logs the following sequence

Jan 24 14:22:06 raca-srv2 kernel: device eth0 entered promiscuous mode
Jan 24 14:22:06 raca-srv2 kernel: device = eth2 entered promiscuous mode
Jan 24 14:22:06 raca-srv2 kernel: device = eth9 entered promiscuous mode
Jan 24 14:22:06 raca-srv2 kernel: device = eth8 entered promiscuous mode
Jan 24 14:22:06 raca-srv2 kernel: device = eth1 entered promiscuous mode
Jan 24 14:22:06 raca-srv2 kernel: device = eth1 left promiscuous mode
Jan 24 14:22:08 raca-srv2 kernel: device = eth2 left promiscuous mode
Jan 24 14:22:29 raca-srv2 kernel: device = eth8 left promiscuous mode
Jan 24 14:22:35 raca-srv2 kernel: device = eth9 left promiscuous mode
Jan 24 14:22:39 raca-srv2 kernel: nr_pdfl= ush_threads exported in /proc is scheduled for removal
Jan 24 14:22:39 raca-srv2 kernel: sysc= tl: The scan_unevictable_pages sysctl/node-interface has been disabled for = lack of a legitimate use case. If you have one, please send an email to lin= ux-mm@kvack.org.
Jan 24 14:22:45 raca-srv2 kernel: dev= ice eth0 left promiscuous mode
Jan 24 14:26:46 raca-srv2 kernel: bnx2x 0= 000:88:00.0 eth8: NIC Link is Down
Jan 24 14:26:46 raca-srv2 kernel: bonding= : bond0: link status definitely down for interface eth8, disabling it
Jan 24 14:26:46 raca-srv2 kernel: bonding= : bond0: making interface eth0 the new active one.=

As your email address is explicitly notified, I send you this email. I h= ope you will be able to us to understand what is happening

If you have questions on the context, I will be pleased to give you any = usefull answers needed.

Regards

Herv=E9

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