Bad Secondary can lock up a box ?

[Shawn Haggett]

Daryl Tester wrote:
> Andrew Mason wrote:
> 
>> I've never really had a stable Linux box lock up before. I know this is 
>> hardware related but i was still somwhat surprised it didn't just ignore the 
>> defective disk. 
> 
> If the faulty secondary "puts crap" (technical term) across the shared cable
> then yes it will affect the primary.  I came across this recently on a server;
> the secondary died, then the primary went shortly after it.  Pulling the
> secondary revived the primary, which appeared to be good all along.

Combine this with a controller and/or drivers that get confused when
this happens, and it could == lockup.

Can you move the disk onto another cable temporarily, or otherwise
shuffle disks around to try getting to the data?