From: Jan Engelhardt Subject: Re: [PATCH 02/18] xstat: Add a pair of system calls to make extended file stats available [ver #6] Date: Thu, 22 Jul 2010 20:05:00 +0200 (CEST) Message-ID: References: <20100715021709.5544.64506.stgit@warthog.procyon.org.uk> <20100715021712.5544.44845.stgit@warthog.procyon.org.uk> <30448.1279800887@redhat.com> <20100722162712.GB10352@jeremy-laptop> <1279817930.3621.14.camel@heimdal.trondhjem.org> <20100722180204.GA32008@samba1> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: Trond Myklebust , Linus Torvalds , Volker.Lendecke@sernet.de, David Howells , linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, samba-technical@lists.samba.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org To: Jeremy Allison Return-path: In-Reply-To: <20100722180204.GA32008@samba1> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Thursday 2010-07-22 20:02, Jeremy Allison wrote: >On Thu, Jul 22, 2010 at 12:58:50PM -0400, Trond Myklebust wrote: >> >> That would make it impossible to export the filesystem with NFSv2 and >> v3. They do rely on ctime checking for certain operations (e.g. deciding >> when to invalidate access and acl caches). NFSv4 needs this too if the >> filesystem has no dedicated change attribute. >> >> Still, I suppose the market for exporting the same filesystem with both >> NFS and Samba is limited... > >Ask NetApp about that :-). They have built a rather large >business on just that fact :-). What would ZFS do? :p