From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx01.extmail.prod.ext.phx2.redhat.com [10.5.110.5]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id oB2EHpmH001628 for ; Thu, 2 Dec 2010 09:17:51 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [18.85.46.34]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id oB2EHdbh028484 for ; Thu, 2 Dec 2010 09:17:39 -0500 Date: Thu, 2 Dec 2010 09:17:37 -0500 From: Christoph Hellwig Message-ID: <20101202141737.GA29799@infradead.org> References: <4CF7A539.1050206@shiftmail.org> <20101202141134.GA22012@infradead.org> <4CF7A9C4.2040607@shiftmail.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <4CF7A9C4.2040607@shiftmail.org> Subject: Re: [linux-lvm] Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Spelic Cc: Christoph Hellwig , linux-lvm@redhat.com, "linux-kernel@vger.kernel.org" , xfs@oss.sgi.com On Thu, Dec 02, 2010 at 03:14:28PM +0100, Spelic wrote: > On 12/02/2010 03:11 PM, Christoph Hellwig wrote: > >I'm pretty sure you have CONFIG_DEBUG_BLOCK_EXT_DEVT enabled. This > >option must never be enabled, as it causes block devices to be > >randomly renumered. Together with the ramdisk driver overloading > >the BLKFLSBUF ioctl to discard all data it guarantees you to get > >data loss like yours. > > Nope... > > # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set Hmm, I suspect dm-linear's dumb forwarding of ioctls has the same effect. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id oB2EFsZ9022289 for ; Thu, 2 Dec 2010 08:15:55 -0600 Received: from bombadil.infradead.org (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id DA7AD1E94327 for ; Thu, 2 Dec 2010 06:17:38 -0800 (PST) Received: from bombadil.infradead.org (bombadil.infradead.org [18.85.46.34]) by cuda.sgi.com with ESMTP id OjZJoT8GMQJtNhkQ for ; Thu, 02 Dec 2010 06:17:38 -0800 (PST) Date: Thu, 2 Dec 2010 09:17:37 -0500 From: Christoph Hellwig Subject: Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram Message-ID: <20101202141737.GA29799@infradead.org> References: <4CF7A539.1050206@shiftmail.org> <20101202141134.GA22012@infradead.org> <4CF7A9C4.2040607@shiftmail.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <4CF7A9C4.2040607@shiftmail.org> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Spelic Cc: Christoph Hellwig , linux-lvm@redhat.com, "linux-kernel@vger.kernel.org" , xfs@oss.sgi.com On Thu, Dec 02, 2010 at 03:14:28PM +0100, Spelic wrote: > On 12/02/2010 03:11 PM, Christoph Hellwig wrote: > >I'm pretty sure you have CONFIG_DEBUG_BLOCK_EXT_DEVT enabled. This > >option must never be enabled, as it causes block devices to be > >randomly renumered. Together with the ramdisk driver overloading > >the BLKFLSBUF ioctl to discard all data it guarantees you to get > >data loss like yours. > > Nope... > > # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set Hmm, I suspect dm-linear's dumb forwarding of ioctls has the same effect. _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757768Ab0LBORj (ORCPT ); Thu, 2 Dec 2010 09:17:39 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:50523 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757716Ab0LBORi (ORCPT ); Thu, 2 Dec 2010 09:17:38 -0500 Date: Thu, 2 Dec 2010 09:17:37 -0500 From: Christoph Hellwig To: Spelic Cc: Christoph Hellwig , "linux-kernel@vger.kernel.org" , xfs@oss.sgi.com, linux-lvm@redhat.com Subject: Re: Bugs in mkfs.xfs, device mapper, xfs, and /dev/ram Message-ID: <20101202141737.GA29799@infradead.org> References: <4CF7A539.1050206@shiftmail.org> <20101202141134.GA22012@infradead.org> <4CF7A9C4.2040607@shiftmail.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4CF7A9C4.2040607@shiftmail.org> User-Agent: Mutt/1.5.21 (2010-09-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 02, 2010 at 03:14:28PM +0100, Spelic wrote: > On 12/02/2010 03:11 PM, Christoph Hellwig wrote: > >I'm pretty sure you have CONFIG_DEBUG_BLOCK_EXT_DEVT enabled. This > >option must never be enabled, as it causes block devices to be > >randomly renumered. Together with the ramdisk driver overloading > >the BLKFLSBUF ioctl to discard all data it guarantees you to get > >data loss like yours. > > Nope... > > # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set Hmm, I suspect dm-linear's dumb forwarding of ioctls has the same effect.