From: Christoph Hellwig Subject: Re: [NFS] -EXDEV between mounts that are same fs Date: Sun, 10 Feb 2008 10:59:23 -0500 Message-ID: <20080210155923.GA15345@infradead.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> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: Christoph Hellwig , nfs@lists.sourceforge.net, Pierre Ossman To: "J. Bruce Fields" Return-path: Received: from neil.brown.name ([220.233.11.133]:43627 "EHLO neil.brown.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750823AbYBJP7r (ORCPT ); Sun, 10 Feb 2008 10:59:47 -0500 Received: from brown by neil.brown.name with local (Exim 4.63) (envelope-from ) id 1JOEan-0007w8-JS for linux-nfs@vger.kernel.org; Mon, 11 Feb 2008 02:59:45 +1100 In-Reply-To: <20080210155733.GC25571@fieldses.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: 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. ------------------------------------------------------------------------- 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