From: Andrew Morton Subject: Re: Updated ext4/jbd2 patches based on 2.6.19-rc1 Date: Thu, 5 Oct 2006 21:31:33 -0700 Message-ID: <20061005213133.2c4cd82d.akpm@osdl.org> References: <1160072610.8508.12.camel@kleikamp.austin.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: ext4 development Return-path: Received: from smtp.osdl.org ([65.172.181.4]:47004 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1750751AbWJFEbg (ORCPT ); Fri, 6 Oct 2006 00:31:36 -0400 To: Dave Kleikamp In-Reply-To: <1160072610.8508.12.camel@kleikamp.austin.ibm.com> Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org If you mount the filesystem with `-t ext4dev -o extents' then create some extenty files, then unount it and then mount it without `-o extents', the driver will then refuse to create extenty files. IOW: you need to give it `-o extents' each time. That seems fairly pointless. In fact, if I'd created the fs with `mke2fs -O extents' (which doesn't work at present) then I'd expect it to use extents from thereon after, without requiring `mount -o extents'.