Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760211AbXFSXf6 (ORCPT ); Tue, 19 Jun 2007 19:35:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756587AbXFSXft (ORCPT ); Tue, 19 Jun 2007 19:35:49 -0400 Received: from e3.ny.us.ibm.com ([32.97.182.143]:52576 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755682AbXFSXfs (ORCPT ); Tue, 19 Jun 2007 19:35:48 -0400 In-Reply-To: <20070619204317.GR10008@csclub.uwaterloo.ca> To: lsorense@csclub.uwaterloo.ca (Lennart Sorensen) Cc: akpm@linux-foundation.org, alan , Chris Snook , hpa@zytor.com, Jack Stone , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk MIME-Version: 1.0 Subject: Re: Versioning file system X-Mailer: Lotus Notes Release 7.0 HF277 June 21, 2006 Message-ID: From: Bryan Henderson Date: Tue, 19 Jun 2007 16:35:50 -0700 X-MIMETrack: Serialize by Router on D01ML604/01/M/IBM(Build V80_M5_05202007|May 20, 2007) at 06/19/2007 19:35:48, Serialize complete at 06/19/2007 19:35:48 Content-Type: text/plain; charset="US-ASCII" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1249 Lines: 27 >We don't need a new special character for every >> new feature. We've got one, and it's flexible enough to do what you want, >> as proven by NetApp's extremely successful implementation. I don't know NetApp's implementation, but I assume it is more than just a choice of special character. If you merely start the directory name with a dot, you don't fool anyone but 'ls' and shell wildcard expansion. (And for some enlightened people like me, you don't even fool ls, because we use the --almost-all option to show the dot files by default, having been burned too many times by invisible files). I assume NetApp flags the directory specially so that a POSIX directory read doesn't get it. I've seen that done elsewhere. The same thing, by the way, is possible with Jack's filename:version idea, and I assumed that's what he had in mind. Not that that makes it all OK. -- Bryan Henderson IBM Almaden Research Center San Jose CA Filesystems - 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/