From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753281AbXCRTSA (ORCPT ); Sun, 18 Mar 2007 15:18:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753278AbXCRTSA (ORCPT ); Sun, 18 Mar 2007 15:18:00 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:38770 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753276AbXCRTR7 (ORCPT ); Sun, 18 Mar 2007 15:17:59 -0400 Subject: Re: forced umount? From: Arjan van de Ven To: Mike Snitzer Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <170fa0d20703162106v47dc13e1u1ae5381576f372ed@mail.gmail.com> References: <170fa0d20703162106v47dc13e1u1ae5381576f372ed@mail.gmail.com> Content-Type: text/plain Organization: Intel International BV Date: Sun, 18 Mar 2007 20:16:19 +0100 Message-Id: <1174245379.3538.252.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.8.3 (2.8.3-1.fc6) Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2007-03-16 at 23:06 -0500, Mike Snitzer wrote: > I'm interested in understanding the state of Linux with regard to > _really_ forcing a filesystem to unmount. > > There is a (stale) project at OSDL that has various implementations: > http://developer.osdl.org/dev/fumount/ the problem with the people who say they want forced umount is.. that most of the time they either want 1) get rid of the namespace entry or 2) want to stop any and all IO to a certain device/partition 1) is already supported with lazy umount (umount -l) for 2), it's not forced umount that they want, it's really an IO disconnect (which scsi supports btw in 2.6 kernels). So.. depending on which of the 2 you are, it's there. Just it's not called "forced umount".....