Re: when read error ,where do we rewrite?

[dong wu <dongwucs@gmail.com>]

If it is written to the same block,will it read error again?
when read error,the low-level attempts a write and remap the block if
the write fails.
where does it remap?
Is there any spare block in the disk for remap when read or write error occurs?

2010/1/7, Robin Hill <robin@robinhill.me.uk>:
> On Thu Jan 07, 2010 at 08:41:20PM +0800, dong wu wrote:
>
> > when read error and can rewrite,where do we rewrite?
> > It can't be rewrited to the old block.
> > It should be rewrite to other place,where can we find the 'other place'?
> > In the source code,I don't find the place that should be rewrited to.
> >
> It's rewritten to the same block - it's up to the low-level device (the
> disk) to attempt a write and transparently remap the block if the write
> fails.
>
> Cheers,
>    Robin
> --
>     ___
>    ( ' }     |       Robin Hill        <robin@robinhill.me.uk> |
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>
>