From: =?iso-8859-1?Q?J=F6rg?= Sommer Subject: Re: ext4 fails on ext2 filesystems Date: Tue, 20 Jan 2009 14:56:12 +0100 Message-ID: <20090120135612.GB2287@alea.gnuu.de> References: <20090118013516.GA4876@alea.gnuu.de> <20090119233059.GH3286@webber.adilger.int> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ADZbWkCsHQ7r3kzd" Cc: linux-ext4@vger.kernel.org To: Andreas Dilger Return-path: Received: from uucp.gnuu.de ([83.246.114.63]:2084 "EHLO uucp.gnuu.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756304AbZATOTK (ORCPT ); Tue, 20 Jan 2009 09:19:10 -0500 Content-Disposition: inline In-Reply-To: <20090119233059.GH3286@webber.adilger.int> Sender: linux-ext4-owner@vger.kernel.org List-ID: --ADZbWkCsHQ7r3kzd Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hello Andreas, Andreas Dilger schrieb am Tue 20. Jan, 07:30 (+0800): > On Jan 18, 2009 02:35 +0100, J=EF=BF=BDrg Sommer wrote: > > I've an ext2 filesystem as root filesystem, because it's mounted readon= ly > > for the most part. I've built in the support for ext[234] in the kernel. > > Ext4 takes precedence over ext2 and it mounts the root filesystem: >=20 > Hmm, probably an unintended consequence of the newly-added patch to > allow ext4 to mount ext2 filesystems. >=20 > > But when remounting the filesystem read/write and changing a file, the > > changes are written to the filesystem, but it's remounted readonly > > immediatly. I've set the mount option remount-ro. > >=20 > > [ 203.082300] EXT4 FS on hda3, no journal > > [ 205.746713] EXT4-fs error (device hda3): ext4_free_data: circular in= direct block detected, inode=3D165056, block=3D184476 >=20 > > motherboard : PowerBook6,3 MacRISC3 Power Macintosh >=20 > Hmm, looks like it might be a bug in the endian conversion? Or an unsigned vs. signed char bug? Can I somehow help you hunting the bug? How can I mount my rootfs with ext4 on 2.6.28. Maybe this bug isn't in this version. Bye, J=C3=B6rg. --=20 $ cat /dev/random #!/usr/bin/perl -WT print "hello world\n"; --ADZbWkCsHQ7r3kzd Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature http://en.wikipedia.org/wiki/OpenPGP Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkl11/wACgkQwe0mZwH1VIC7AQCfRRnTRg+QE8DF06vQDq8sE/E7 XdgAn0KUe/4lro0affzI5PtyJDx0/eHw =GLyQ -----END PGP SIGNATURE----- --ADZbWkCsHQ7r3kzd--