Use ! for clarity when commands are supposed to fail.
Check a few other cases that should fail, and correct deleting
non-existent pools.
Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
Require that the pool name be passed twice along with an force option
before we irreversibly delete an entire pool of objects.
Signed-off-by: Sage Weil <sage@inktank.com>
The default of 8 is virtually never the right answer. Require the initial
pg count to be explicitly provided.
Signed-off-by: Sage Weil <sage@inktank.com>