(dbx) next
t@1 (l@1) stopped in main (optimized) at line 3116 in file "zdb.c"
 3116           nvlist_free(policy);
(dbx) next
t@1 (l@1) stopped in main (optimized) at line 3121 in file "zdb.c"
 3121           argv++;
(dbx) next
t@1 (l@1) stopped in main (optimized) at line 3122 in file "zdb.c"
 3122           argc--;
(dbx) next
t@1 (l@1) stopped in main (optimized) at line 3123 in file "zdb.c"
 3123           if (!dump_opt['R']) {
(dbx) next
t@1 (l@1) stopped in main (optimized) at line 3124 in file "zdb.c"
 3124                   if (argc > 0) {
(dbx) next
t@1 (l@1) stopped in main (optimized) at line 3135 in file "zdb.c"
 3135                   (os != NULL) ? dump_dir(os) : dump_zpool(spa);
(dbx) next

MOS Configuration:
        version: 22
        name: 'test_pool'
        state: 0
        txg: 5
        pool_guid: 5103194920190347983
        hostid: 9381812
        hostname: 'openindiana'
        vdev_children: 1
        vdev_tree:
            type: 'root'
            id: 0
            guid: 5103194920190347983
            create_txg: 4
            children[0]:
                type: 'disk'
                id: 0
                guid: 9358302462041951045
                path: '/dev/dsk/c2t0d0p0'
                devid: 'id1,sd@n6000c29b3b550053668d4b365c2441f6/q'
                phys_path: '/pci@0,0/pci15ad,1976@10/sd@0,0:q'
                whole_disk: 0
                metaslab_array: 23
                metaslab_shift: 28
                ashift: 9
                asize: 32207536128
                is_log: 0
                create_txg: 4
t@1 (l@1) stopped in main (optimized) at line 3150 in file "zdb.c"
 3150           (os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);