From: Andreas Dilger <adilger@sun.com>
To: Matt LaPlante <cybrmatt@gmail.com>
Cc: Eric Sandeen <sandeen@redhat.com>, linux-ext4@vger.kernel.org
Subject: Re: Mounting Ext3 with Ext4
Date: Thu, 21 May 2009 01:01:46 -0400 [thread overview]
Message-ID: <20090521050146.GC8744@webber.adilger.int> (raw)
In-Reply-To: <baab8ccb0905202137v426c8568k8fc6f53fc095c351@mail.gmail.com>
On May 21, 2009 00:37 -0400, Matt LaPlante wrote:
> It looks likes the magic touch was to add rootfstype=ext4 to the
> kernel command line. Prior to this the ext4 only kernel wasn't
> finding the disk, but with it attached it now appears to boot
> successfully. Maybe worth adding a note to the wiki?
This means that your initrd has "ext3" as the root filesystem type
in /etc/fstab or similar. If the filesystem type is explicitly
given as "ext3" then the ext4 driver will not try to mount it.
I suppose it might be reasonable to have a config option that adds
the "ext3" and "ext2" filesystem types to the ext4 driver for cases
like this where CONFIG_EXT2 and CONFIG_EXT3 (and module equivalents)
are disabled.
Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.
prev parent reply other threads:[~2009-05-21 5:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-20 23:24 Mounting Ext3 with Ext4 Matt LaPlante
2009-05-21 1:17 ` Eric Sandeen
2009-05-21 1:28 ` Matt LaPlante
2009-05-21 4:37 ` Matt LaPlante
2009-05-21 4:53 ` Eric Sandeen
2009-05-21 5:01 ` Andreas Dilger [this message]
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