How to destroy a zpool that can no longer be imported?

[Jonathan Chen]

Hi,

While experimenting ZFS, I've ended up with a zpool that can't be imported:

8:41pm# zpool import
   pool: lake
     id: 10528535549827216272
  state: UNAVAIL
 status: One or more devices are missing from the system.
 action: The pool cannot be imported. Attach the missing
        devices and try again.
   see: http://illumos.org/msg/ZFS-8000-3C
 config:

        lake                    UNAVAIL  insufficient replicas
          12490607842175990247  UNAVAIL  cannot open

I don't care about the (non-existent) data, but I would like to remove
the pool entry. The standard way is to import the pool and then
destory it. However, this pool cannot be import (even with -f) and so
there doesn't seem to be a way to destroy it.

How do I get rid of this bogus faulted pool?
-- 
Jonathan Chen <jonc at chen.org.nz>