There are clearly bugs in the pmap module. I'm also having a fun
   time with trying ccd mirroring, which results in pmap panics, when
   you try to mirror two drives on different controllers. I will
   shortly try testing two drives on the same controller and see if
   I can get that to die, too. This is on my test systems, however,
   not my production system. Yet.


hmm... i had thought jason ripped out the "mirroring" code from
the ccd ... it's Bad.  i don't suggest using it.


jason was working on a (separate) mirror driver, but, we know
how busy he is, and i'm sure he hasn't touched it for months...

perhaps you wanna finish it for him?  :-)