[gentoo-user] Thrashing a drive to flush out problems..

[Jon Hardcastle]

Hi guys can anyone recommend a tool
for thrashing the b*ll*cks of a drive in  way that
isn't destructive to the data?

I was thinking badblocks with -w but it is destructive and
i dont want to do anything that will potentially lower the
integrity of my array? (Even tho it is raid6 :) )

There must be some bonnie esk tool that will read/write
every combination to every block but keep the data safe
after to flush out any sector issues etc.

Cheers.