It sounds like you are missing and argument. To test a destroy on a pool with name test
you would type
zpool destroy test
or with the force switch (try to limit this use to only when necessary)
zpool destroy -f test
as a safe measure you should always try to unmount the pool to stop any possible I/O operations
zfs unmount -a
then zpool destroy test
Well I meant to say that I have been using the zpool destory command on a certain pool. For example zpool destory thing and I get the error with the argument list. Same goes when I use zpool destory -f thing. Thing still shows up when I do zpool list.
00Roush