Reiser4-ReiserFS recovery story

Reiser4-ReiserFS recovery story

[Marcel Hilzinger]

Did you know, that you can recover a ReiserFS partition, which you formatted 
with reiser4?

Yesterday I formatted a ReiserFS partition with Reiser4. It was by mistake, as 
I did not modify the partition in my slow.c bash-script. Nevertheless I 
learned from what I knew about Reiser4:

"If Reiser4 writes during formatting only the really needed informations" I 
thought, "then data must still be there..."

So I run reiserfsck --rebuild-sb on the partition. I told the program, that 
the partition is Reiser V 3.6 and it worked. Now I tried reiserfsck --check. 
As this one failed I had to run reiserfsck --rebuild-tree to be able to mount 
the partition. Now I can mount the partition and all the data is still there.

Nice feature :-) perhaps it can help someody else, too.

Marcel
-- 
Üdvözlettel -- Mit freundlichen Grüssen,
Marcel Hilzinger

Re: Reiser4-ReiserFS recovery story

[Tierra]

Awesome tip, thanks a ton for posting it, I'm sure it'll come in handy later.

Bryan

On Wed, 28 Jul 2004 16:33:06 +0200, Marcel Hilzinger
<marcel@hilzinger.hu> wrote:
> Did you know, that you can recover a ReiserFS partition, which you formatted
> with reiser4?
> 
> Yesterday I formatted a ReiserFS partition with Reiser4. It was by mistake, as
> I did not modify the partition in my slow.c bash-script. Nevertheless I
> learned from what I knew about Reiser4:
> 
> "If Reiser4 writes during formatting only the really needed informations" I
> thought, "then data must still be there..."
> 
> So I run reiserfsck --rebuild-sb on the partition. I told the program, that
> the partition is Reiser V 3.6 and it worked. Now I tried reiserfsck --check.
> As this one failed I had to run reiserfsck --rebuild-tree to be able to mount
> the partition. Now I can mount the partition and all the data is still there.
> 
> Nice feature :-) perhaps it can help someody else, too.
> 
> Marcel
> --
> Üdvözlettel -- Mit freundlichen Grüssen,
> Marcel Hilzinger
>