From: "J. Bruce Fields" Subject: Re: [NFS] -EXDEV between mounts that are same fs Date: Sun, 10 Feb 2008 13:10:53 -0500 Message-ID: <20080210181053.GD25571@fieldses.org> References: <20080209200503.6a11e88b@poseidon.drzeus.cx> <20080209191021.GE25533@fieldses.org> <20080209213511.59ff4e2c@poseidon.drzeus.cx> <20080209231435.GA20501@fieldses.org> <20080210131224.1d4ae39f@poseidon.drzeus.cx> <20080210152618.GB25571@fieldses.org> <20080210153340.GB14540@infradead.org> <20080210155733.GC25571@fieldses.org> <20080210155923.GA15345@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs@lists.sourceforge.net, Pierre Ossman To: Christoph Hellwig Return-path: Received: from neil.brown.name ([220.233.11.133]:57435 "EHLO neil.brown.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752004AbYBJSLQ (ORCPT ); Sun, 10 Feb 2008 13:11:16 -0500 Received: from brown by neil.brown.name with local (Exim 4.63) (envelope-from ) id 1JOGe1-0008MJ-3X for linux-nfs@vger.kernel.org; Mon, 11 Feb 2008 05:11:13 +1100 In-Reply-To: <20080210155923.GA15345@infradead.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Sun, Feb 10, 2008 at 10:59:23AM -0500, Christoph Hellwig wrote: > On Sun, Feb 10, 2008 at 10:57:33AM -0500, J. Bruce Fields wrote: > > To get the equivalent of subtree checking, we also need a reference from > > each inode back to the subvolume it belongs to, so we can determine the > > subvolume from a filehandle. I assume that's a more intrusive change. > > XFS actually has the infrastructure for that by having a project id > that's inheritable to child directories/files. But to actuall make > that useable we'd have to encode it in the fsid. I must admit > I haven't thought that far yet. It'd be useful for nfsd. So if you have any design notes or anything I'd be interested. --b. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs _______________________________________________ Please note that nfs@lists.sourceforge.net is being discontinued. Please subscribe to linux-nfs@vger.kernel.org instead. http://vger.kernel.org/vger-lists.html#linux-nfs