linux-ext4 - Re: grub / ext4 compatibility problem?

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Message-Id: <200906171740.02101.bzolnier@gmail.com>
Date:	Wed, 17 Jun 2009 17:40:01 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	"Theodore Ts'o" <tytso@....edu>, linux-ext4@...r.kernel.org
Subject: Re: grub / ext4 compatibility problem?

On Wednesday 17 June 2009 17:20:26 Eric Sandeen wrote:
> Bartlomiej Zolnierkiewicz wrote:
> > On Wednesday 17 June 2009 16:46:57 Eric Sandeen wrote:
> >> Bartlomiej Zolnierkiewicz wrote:
> >>> Hi,
> >>>
> >>> I've run into a really peculiar problem today..
> >> ...
> >>
> >>> This is on Fedora 11 system (I upgraded from Fedora 10 few days ago) with
> >>> all updates and ext3 migrated (per HOWTO on ext4 wiki) to ext4 yesterday.
> >>>
> >>> Is this something worth people's attention or should I just try to run fsck
> >>> manually?
> >>
> >> is /boot ext4?  F11's grub doesn't yet understand ext4, as mentioned in
> >> the releasenotes.  I hope to remedy that soon but in the F11 devel
> >> cycle, other bugs of the oopsing & corrupting kind were more pressing...
> > 
> > I see it now, in my case there is no separate /boot partition.. :)
> > 
> > Thanks Eric & sorry for the noise.
> 
> No problem, sorry I didn't get grub going before F11 released :)

Hm, upon looking at the ext4 patch for the grub I think that including it
can't make the situation worse.  It is quite compact/clean patch and grub
cannot ever access such fs in write mode (AFAICS from the quick look)?

Though I can imagine that comments like this one:

+      /* map extents enabled logical block number to physical fs on-dick block number */

may significantly decrease confidence in the changes. :)

Thanks.
Bart
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