Re: Why are bad disk sectors numbered strangely, and what happensto them?

[Hans Reiser]

Rogier Wolff wrote:

> On Tue, Oct 14, 2003 at 01:57:42PM +0400, Hans Reiser wrote:
>  
>
> > Rogier Wolff wrote:
> >    
> >
> > > Of course, I left my drive that indicated it had problems (i.e. it
> > > didn't spot the sector going bad before it became unreadable), in the
> > > machine for another two days. It's getting replaced ASAP (i.e. the
> > > next hour or so).
> > >      
>
>  
>
> > replacing the drive is reasonable caution.  I think though that the 
> > other poster is right that IFF you want to remap bad blocks, the drive 
> > should do it not reiserfs.
> >    
>
> It is a "pretty much for free" feature. In your in-kernel
> implementation you hopefully already have the ability to skip blocks
> in use by other files. So allocating it to a special file will take
> care of the kernel part. Next you need one line in your fsck to
> prevent that "dangling inode" getting linked into lost+found. Then you
> do need a utility to actually be able to mark blocks as bad. 
>
> 			Roger. 
>
>  
We DO have it.  It is present in Reiser4, and there is a patch around 
somewhere for V3 that I would be happy to have someone merge into the 
latest V3 code and test (we are too focused on shipping V4 to do it 
ourselves right now).

I agree that the FS should be able to do it, but I also think that the 
drive doing it is best.

--
Hans


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