Re: dean's linux raid wishlist

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On Sun, Oct 26, 2003 at 05:31:53PM -0800, dean gaudet wrote:
> logging raid
 
A while ago, Neil posted thoughts on a journal design that grew out
of discussion with Stephen Tweeedie:

http://lwn.net/2002/0523/a/jbd-md.php3

> partially failed disks
> 
>    a common failure mode for a disk is to develop a local read error, a
>    few sectors which are unreadable. presently any such error causes md
>    to mark the disk as faulty and remove it from the raid. there are two
>    unfortunate aspects of this approach:

EVMS offers a "badblock layer", though I agree it would be nice to have
this in the RAID code.  [Of course, the DM folks want to make MD go
away...]

Regards,

	Bill Rugolsky
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