4168 ztest assertion failure in dbuf_undirty
4169 verbatim import causes zdb to segfault
4170 zhack leaves pool in ACTIVE state
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Eric Schrock <eric.schrock@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>

@@ -3840,12 +3840,10 @@
                         spa_configfile_set(spa, props, B_FALSE);
 
                 spa_config_sync(spa, B_FALSE, B_TRUE);
 
                 mutex_exit(&spa_namespace_lock);
-                spa_history_log_version(spa, "import");
-
                 return (0);
         }
 
         spa_activate(spa, mode);