+dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
+{
+ char blkbuf[BP_SPRINTF_LEN];
+
+ if (bp->blk_birth != 0) {
+ sprintf_blkptr(blkbuf, bp);
+ (void) printf("\t%s\n", blkbuf);
+ }
+ return (0);
+}
+
+static void
+dump_bptree(objset_t *os, uint64_t obj, char *name)
+{
+ char bytes[32];
+ bptree_phys_t *bt;
+ dmu_buf_t *db;
+
+ if (dump_opt['d'] < 3)
+ return;
+
+ VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
+ bt = db->db_data;
+ zdb_nicenum(bt->bt_bytes, bytes);
+ (void) printf("\n %s: %llu datasets, %s\n",
+ name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
+ dmu_buf_rele(db, FTAG);
+
+ if (dump_opt['d'] < 5)
+ return;
+
+ (void) printf("\n");
+
+ (void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
+}
+
+/* ARGSUSED */
+static int