IDE layer adoptations that *fake* a failing drive?

[Leon Woestenberg <leonw@mailcan.com>]

Hello,

I wondered if anyone here is aware of code that sits between the IDE
software layer and the storage device, that emulates a failing disk in 
one way or another.

I.e. for example, write multiple re-tries with time-outs, checksum
errors, failing to complete read/writes to medium etc.

 From my networking stuff, I know there are network simulators that you
can provoke to simulate all kind of network traffic abnormalities, such
as congestion, dupes, lost packets, bursting.

I have access to only a limited number of really bad disks, and want to
do stress tests against fully automatically managed software RAID arrays
under Linux (except for the part where you have to physically swap 
defect disks :-)

Ciao,

Leon.