From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 15 May 2002 18:42:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 15 May 2002 18:42:53 -0400 Received: from gate.in-addr.de ([212.8.193.158]:12293 "HELO mx.in-addr.de") by vger.kernel.org with SMTP id ; Wed, 15 May 2002 18:42:49 -0400 Date: Thu, 16 May 2002 00:41:38 +0200 From: Lars Marowsky-Bree To: Russell Leighton , Tony.P.Lee@nokia.com Cc: wookie@osdl.org, alan@lxorguk.ukuu.org.uk, woody@co.intel.com, linux-kernel@vger.kernel.org, zaitcev@redhat.com Subject: Re: InfiniBand BOF @ LSM - topics of interest Message-ID: <20020515224138.GJ27307@marowsky-bree.de> In-Reply-To: <4D7B558499107545BB45044C63822DDE3A2071@mvebe001.NOE.Nokia.com> <3CE2D4DB.3020702@elegant-software.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.3.99i X-Ctuhulu: HASTUR Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On 2002-05-15T17:36:27, Russell Leighton said: > Lot's of very cool ideas for IB ...not knowing much about IB, but > being curious and interested, I have a question which may be stupid > so I apoligize in advance if it is... > > Can we really have these sort of low level IB interactions and have : > - security issues addressed, mostly an issue if the devices are over > a network w/other devices The idea is that the IB interconnect is "trusted". Doing very low level kernel operations cluster-style over a non-trusted link is asking for it; either you lose security-wise or performance for authentication / encryption _will_ kill you. The real interesting question from my side is "availability"; how does the kernel deal with crashed nodes, loss of link etc? If you already had agreed or semi-standard interfaces here, we would gladly pick them up. These generic cluster interfaces are being discussed as part of the Open Clustering Framework now, and it would be good if a kernel developer reviewed the discussions regarding the generic event mechanism proposed from a kernel perspective. Sincerely, Lars Marowsky-Brée -- Immortality is an adequate definition of high availability for me. --- Gregory F. Pfister