From: Eric Paris Subject: Re: [PATCH 0/6][v4][RFC] NFSv3: implement extended attribute protocol (XATTR) Date: Wed, 17 Mar 2010 16:13:06 -0400 Message-ID: <7e0fb38c1003171313i3bb81da3xda3a1d28f822d019@mail.gmail.com> References: <20100309035932.GA14237@cynthia.pants.nu> <4B95E167.40306@schaufler-ca.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: Brad Boyer , James Morris , linux-nfs@vger.kernel.org, linux-security-module@vger.kernel.org, Trond Myklebust , "J. Bruce Fields" , Neil Brown , linux-fsdevel@vger.kernel.org To: Casey Schaufler Return-path: Received: from mail-pw0-f46.google.com ([209.85.160.46]:60803 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754937Ab0CQUNR (ORCPT ); Wed, 17 Mar 2010 16:13:17 -0400 In-Reply-To: <4B95E167.40306@schaufler-ca.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Tue, Mar 9, 2010 at 1:49 AM, Casey Schaufler wrote: > Another is to NFS mount the filesystem back on to the server, > in which case James' scheme works just dandy. It's a trick that > I've used more than once in the Unix world for this exact purpose. > Of course you have to arrange your mount points in advance with > malice aforethought, but that's likely something you're used to > by now. Is this safe with NFS on Linux? I know in the past (RHEL5) mounting NFS over loopback can cause deadlocks under even slight memory pressure. I complained about it and was told 'don't do that, just bind mount.' -Eric