linux-kernel - Re: Ubuntu Jaunty ext3 --> ext4 upgrade issue

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Message-Id: <200902191043.02880.marvin24@gmx.de>
Date:	Thu, 19 Feb 2009 10:43:02 +0100
From:	Marvin <marvin24@....de>
To:	tim.gardner@...onical.com
Cc:	tytso@....edu,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Ubuntu Jaunty ext3 --> ext4 upgrade issue


Hi Tim,

Am Mittwoch 18 Februar 2009 19:10:38 schrieb Tim Gardner:
> Ted,
>
> I've encountered a situation where the patches that you've proposed for
> stable updates might be causing some issues. This user ivoks appears to
> have an upgrade issue. I assume he's enabled ext4 on an existing ext3
> file system. Hopefully I can get more details. Have you seen anything
> like this?

I had a similar issue with intrepid. To be able to boot from the ext4 fs, I 
installed grub2 from jaunty. The error went away after compiling grub2 from 
source and coping only the ext2.mod to the grub dir. So there must be some 
later updates missing. I guess this is some fallout from 2.6.27/TESTFS or 
similar.

Marvin

> After looking at your for-stable branch, I think I'm missing a couple of
> jbd2 patches. Could they be significant?
>
> rtg
>
> <ivoks> i'm getting 'Invalid or unsupported executable format' from grub
> on all jaunty's generic kernels since (including) 2.6.28-7
> <rtg> ivoks: you must have HW issues. Surely lots of folks would have
> been howling by now.
> <ivoks> could be... but -6 works :/
> <ivoks> even after reinstall of all kernels
> <rtg> have you fsck'd ?
> <ivoks> could try that...
>  it's ext4
> <rtg> ivoks: is it an ext4 upgrade, or was it install time formatted ?
> <ivoks> upgrade
> <rtg> hmm, there were a bunch of ext4 changes that went into -7.18
> <ivoks> right, i've noticed that
> <rtg> ivoks: any change you could build a kernel with all of those
> patches reverted? I expected them via stable updates by now, but perhaps
> Ted has been finding issues with them.
> <ivoks> i could try...
> <rtg> ivoks: they are all labeled 'SAUCE: (revert before 2.6.28.y
> update) ext4:'
> <ivoks> thanks
> <ivoks> only 21 commits :)
> <ivoks> is it possible to build i386 kernel on amd64?
> <rtg> ivoks: you have to chroot the build.
> <ivoks> oh, right!
> <ivoks> rtg: so, reverting all ext4 commits since -6 did the trick
> <rtg> ivoks: can you file a bug with the specifics, and your results
> that I can pass on to Ted ?
> <ivoks> yes, but later... i have to rush now :/
>  take care

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