From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx09.extmail.prod.ext.phx2.redhat.com [10.5.110.13]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id oB2EF5nY032443 for ; Thu, 2 Dec 2010 09:15:05 -0500 Received: from BLADE4.ISTI.CNR.IT (blade4.isti.cnr.it [194.119.192.20]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id oB2EErKN014641 for ; Thu, 2 Dec 2010 09:14:54 -0500 Received: from SCRIPT-SPFWL-DAEMON.mx.isti.cnr.it by mx.isti.cnr.it (PMDF V6.5 #31825) id <01NUY70AZZGGLS7BA7@mx.isti.cnr.it> for linux-lvm@redhat.com; Thu, 02 Dec 2010 15:14:35 +0100 (MET) Received: from conversionlocal.isti.cnr.it by mx.isti.cnr.it (PMDF V6.5 #31825) id <01NUY706M72OLS71Q6@mx.isti.cnr.it> for linux-lvm@redhat.com; Thu, 02 Dec 2010 15:14:33 +0100 (MET) Date: Thu, 02 Dec 2010 15:14:28 +0100 From: Spelic In-reply-to: <20101202141134.GA22012@infradead.org> Message-id: <4CF7A9C4.2040607@shiftmail.org> MIME-version: 1.0 Content-transfer-encoding: 7bit References: <4CF7A539.1050206@shiftmail.org> <20101202141134.GA22012@infradead.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; format="flowed"; charset="us-ascii" To: Christoph Hellwig Cc: linux-lvm@redhat.com, "linux-kernel@vger.kernel.org" , xfs@oss.sgi.com 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