Re: Thoughts on large disk reliability and raid maintenance?

[David Maxwell <david%crlf.net@localhost>]

On Wed, Sep 10, 2008 at 12:42:47PM -0700, Brian Buhrow wrote:
>       Hello.  I've just been reading this blog on the reliability of larger
> and larger disks:
> 
> http://alumnit.ca/~apenwarr/log/?m=200809#08
> 
>       I wonder if it might be useful to add a thread which slowly and
> continuously reads the raid set over and over again, testing for bad
> sectors and, as he suggests, writing them back to the affected drives.
> I've certainly run into situations where a sector went bad on a raid set,
> then, when I went to rebuild the raid set, found that other sectors on
> other drives were bad.
> thoughts?

Please be sure to read the following paper before doing any work on
this. It can do more harm than good. See section 4.2

http://pages.cs.wisc.edu/~krioukov/Krioukov-ParityLost.pdf

-- 
David Maxwell, david%vex.net@localhost|david%maxwell.net@localhost --> Mastery 
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