Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261760AbVEBVAm (ORCPT ); Mon, 2 May 2005 17:00:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261745AbVEBVAl (ORCPT ); Mon, 2 May 2005 17:00:41 -0400 Received: from gate.in-addr.de ([212.8.193.158]:18123 "EHLO mx.in-addr.de") by vger.kernel.org with ESMTP id S261771AbVEBVAa (ORCPT ); Mon, 2 May 2005 17:00:30 -0400 Date: Mon, 2 May 2005 22:45:14 +0200 From: Lars Marowsky-Bree To: Daniel Phillips Cc: Daniel McNeil , David Teigland , Steven Dake , Linux Kernel Mailing List , Andrew Morton Subject: Re: [PATCH 1b/7] dlm: core locking Message-ID: <20050502204514.GB4722@marowsky-bree.de> References: <20050425165826.GB11938@redhat.com> <1114706362.18352.85.camel@ibm-c.pdx.osdl.net> <20050428164529.GF21645@marowsky-bree.de> <200504290425.24485.phillips@istop.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <200504290425.24485.phillips@istop.com> X-Ctuhulu: HASTUR User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1330 Lines: 32 On 2005-04-29T04:25:24, Daniel Phillips wrote: > > It makes a whole lot of sense to combine a DLM with (appropriate) > > fencing so that the shared resources are protected. I understood David's > > comment to rather imply that fencing is assumed to happen outside the > > DLM's world in a different component; ie more of a comment on sane > > modularization instead of sane real-world configuration. > > But just because fencing is supposed to happen in an external component, > we can't wave our hands at it and skip the analysis. We _must_ identify the > fencing assumptions and trace the fencing paths with respect to every > recovery algorithm in every cluster component, including the dlm. "A fenced node no longer has access to any shared resource". Is there any other assumption you have in mind? Sincerely, Lars Marowsky-Br?e -- High Availability & Clustering SUSE Labs, Research and Development SUSE LINUX Products GmbH - A Novell Business -- Charles Darwin "Ignorance more frequently begets confidence than does knowledge" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/