From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Torokhov Subject: Re: GFS, what's remainingh Date: Tue, 6 Sep 2005 09:31:34 -0500 Message-ID: References: <20050901104620.GA22482@redhat.com> <200509060248.47433.phillips@istop.com> <200509060155.04685.dtor_core@ameritech.net> <200509060318.25260.phillips@istop.com> Reply-To: dtor_core@ameritech.net Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Cc: linux-kernel@vger.kernel.org, Lars Marowsky-Bree , Andi Kleen , linux clustering , akpm@osdl.org, linux-fsdevel@vger.kernel.org Return-path: Received: from rproxy.gmail.com ([64.233.170.203]:48094 "EHLO rproxy.gmail.com") by vger.kernel.org with ESMTP id S964874AbVIFObh convert rfc822-to-8bit (ORCPT ); Tue, 6 Sep 2005 10:31:37 -0400 Received: by rproxy.gmail.com with SMTP id r35so986393rna for ; Tue, 06 Sep 2005 07:31:34 -0700 (PDT) To: Daniel Phillips In-Reply-To: <200509060318.25260.phillips@istop.com> Content-Disposition: inline Sender: linux-fsdevel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On 9/6/05, Daniel Phillips wrote: > On Tuesday 06 September 2005 02:55, Dmitry Torokhov wrote: > > On Tuesday 06 September 2005 01:48, Daniel Phillips wrote: > > > On Tuesday 06 September 2005 01:05, Dmitry Torokhov wrote: > > > > do you think it is a bit premature to dismiss something even without > > > > ever seeing the code? > > > > > > You told me you are using a dlm for a single-node application, is there > > > anything more I need to know? > > > > I would still like to know why you consider it a "sin". On OpenVMS it is > > fast, provides a way of cleaning up... > > There is something hard about handling EPIPE? > Just the fact that you want me to handle it ;) > > and does not introduce single point > > of failure as it is the case with a daemon. And if we ever want to spread > > the load between 2 boxes we easily can do it. > > But you said it runs on an aging Alpha, surely you do not intend to expand it > to two aging Alphas? You would be right if I was designing this right now. Now roll 10 - 12 years back and now I have a shiny new alpha. Would you criticize me then for using a mechanism that allowed easily spread application across several nodes with minimal changes if needed? What you fail to realize that there applications that run and will continue to run for a long time. > And what makes you think that socket-based > synchronization keeps you from spreading out the load over multiple boxes? > > > Why would I not want to use it? > > It is not the right tool for the job from what you have told me. You want to > get a few bytes of information from one task to another? Use a socket, as > God intended. > Again, when TCPIP is not a native network stack, when libc socket routines are not readily available - DLM starts looking much more viable. -- Dmitry