Re: document ext3 requirements

[Rob Landley <rob@landley.net>]

On Tuesday 06 January 2009 09:57:29 Theodore Tso wrote:
> On Tue, Jan 06, 2009 at 04:40:33PM +0100, Andi Kleen wrote:
> > > Well, Kurt Garloff wrote that program years and years ago.  I'm sure
> > > if someone created patches he'd probably accept them, though.  It's
> > > still the best program I've found for doing image backups in
> > > catastrophic situations.
> >
> > Better would be just to incorporate the functionality as an option
> > into standard GNU dd. Then everyone would easily have access to it.
>
> I'm not sure whether the GNU coreutils maintainer would be willing to
> accept a series of Linux-specific interfaces, but dd_rescue also has
> the advantage that it uses a large blocksize for speed, but when an
> error is returned, it backs off to a small block size to recovery the
> maximum amount of data, and then later returns to the large block
> size.  (Ideally, it should be able to query the disk drive to
> determine its internal block size, and use that for the smaller block
> size, but I'm not sure if there's a standardized way that value is
> exposed by HDD's or SDD's.)

I don't suppose there a Documentation file to put data recovery information 
in?

(Maybe the new filesystems expectations file, which doesn't seem the best name 
for it...?)

Rob