Re: reiser4 disk formats (was http://www.namesys.com/snapshots/2004.08.09-internal.testing/)

[Francesco Biscani <frbiscani@jumpy.it>]

Hi,

On Monday 16 August 2004 00:55, Domenico Andreoli wrote:
> so the most safe catch-all command sequence should be simply
>
>   1. fsck.reiser4 device
>      - do also whatever fsck says is required to bring the fs
>        consistent. most probably it will say to use --build-sb and
>        then --fix.
>   2. debugfs.reiser4 -C device
>   3. fsck.reiser4 device
>      - do again whatever fsck says, most probably --fix is required.
>
> this should bring the fs from whatever disk format it is in to the
> latest one and this *should* happen without data loss. am i right?

I may be wrong here, but as far as I remember reiser4progs 1.x give errors if 
used on old disk formats. If you try to --fix these errors _before_ changing 
format you may lose data. So the best sequence would be:

1. fsck.reiser4 --fix device 
     (with reiser4progs < 1.x)
2. upgrade to reiser4progs 1.x
3. debugfs.reiser4 -C device
4. fsck.reiser4 --fix device

This way you fix all real errors (possibly) present _before_ converting the 
layout, and you avoid the (false) errors reported by reiser4progs 1.x on old 
disk layouts. Can someone confirm?

Regards,

  Francesco