From: Andreas Friedrich Berendsen Subject: Re: May I suggested an update for ext4.txt file? Date: Wed, 25 Feb 2009 06:14:21 +1300 Message-ID: <1235495661.11758.40.camel@localhost.localdomain> References: <1235494800.11758.28.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit To: linux-ext4@vger.kernel.org Return-path: Received: from yw-out-2324.google.com ([74.125.46.30]:29184 "EHLO yw-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752586AbZBXROb (ORCPT ); Tue, 24 Feb 2009 12:14:31 -0500 Received: by yw-out-2324.google.com with SMTP id 5so1096971ywh.1 for ; Tue, 24 Feb 2009 09:14:28 -0800 (PST) In-Reply-To: <1235494800.11758.28.camel@localhost.localdomain> Sender: linux-ext4-owner@vger.kernel.org List-ID: >From http://kernelnewbies.org/Ext4 "3.2. Migrate existing Ext3 filesystems to Ext4", instructions to migrate are different from the ext4.txt file: /* ----------------------- */ You need to use the tune2fs and fsck tools in the filesystem, and that filesystem needs to be unmounted. Run: * tune2fs -O extents,uninit_bg,dir_index /dev/yourfilesystem After running this command you MUST run fsck. If you don't do it, Ext4 WILL NOT MOUNT your filesystem. /* -------------------------- * -- Berendsen ----Original Message----- From: Andreas Friedrich Berendsen To: linux-ext4@vger.kernel.org Subject: May I suggested an update for ext4.txt file? Date: Wed, 25 Feb 2009 06:00:07 +1300 kernel 2.6.28.7 efs2prog: 1.41.4 File Documentation/filesystems/ext4.txt states: ... Or to configure an existing ext3 filesystem to support extents: # tune2fs -O extents /dev/hda1 .... To convert from ext2 (a very old filesystem :) ) to ext4, it's necessary to add more options. I'm not sure which one made the trick. tune2fs -O has_journal,dir_index,filetype,extent,flex_bg,sparse_super,large_file,huge_file,uninit_bg,dir_nlink,extra_isize Also, /etc/filesystems does not contain an entry for ext4. /etc/efs2prog.conf is ok. -- Berendsen -- __________________________________________ Andreas Friedrich Berendsen SCA OCP MSCA A+ Linux+ Network+ HpMASE