Fedora: FC2 <- FC3 fs incompatibilities

[Net Llama!]

On Mon, 15 Nov 2004, Klaus-Peter Schrage wrote:
> Recently I did a fresh FC3 install - not an upgrade of FC2, as, since
> RedHat.wayback.when, I always keep two subsequent OS versions on my box
> to boot into them through Grub. And I always have the old '/'-partition
> in my new /etc/fstab (and vice versa) to compare how things are done in
> the old/new configurations.
>
> After the FC3 install had finished and after some post-install fiddling,
> I tried to boot into FC2, but during the fsck part of the boot process,
> I got a message like:
> 	fsck.ext3: Filesystem has unsupported feature(s) (/)
> 	e2fsk: Get a newer version of e2fsk!
> and I ended up in a maintenance console. From there, I followed the
> advice,  installed the e2fsprogs-1.35-11.2 RPM from the FC3 DVD and
> rebooted into FC2, where the debacle began:
>
> To make it short, it ended up in a completely hosed FC2 '/'-partition
> with bunches of file fragments in lost+found!
>
> I'm sure I did something extremely stupid, but even with extensive
> googling I didn't get many clues:
> http://bugs.gentoo.org/show_bug.cgi?id=71159
> http://www.redhat.com/archives/fedora-list/2004-November/msg02853.html
>
> What is clear now: There has been added the feature of online growing of
>   existing ext3 file systems to e2fsprogs. It is faintly described in
> the FC3 release notes, but even if I had read them before ;-), I
> wouldn't have read a warning out of it. This new feature may be or may
> be not the cause of the loss.
>
> Thanks god, I didn't loose important data ...

Eeeek, that's a nightmarae.  Makes me happy that I only use XFS.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lonni J Friedman                                netllama at linux-sxs.org
Linux Step-by-step & TyGeMo                  http://netllama.ipfox.com