diff --git a/doc/jsonrpc.md b/doc/jsonrpc.md
index 8b5310432..e1668da4c 100644
--- a/doc/jsonrpc.md
+++ b/doc/jsonrpc.md
@@ -617,8 +617,11 @@ Example response:
       "num_read_ops": 2,
       "bytes_written": 0,
       "num_write_ops": 0,
+      "bytes_unmapped": 0,
+      "num_unmap_ops": 0,
       "read_latency_ticks": 178904,
       "write_latency_ticks": 0,
+      "unmap_latency_ticks": 0,
       "queue_depth_polling_period": 2,
       "queue_depth": 0,
       "io_time": 0,
diff --git a/include/spdk/bdev.h b/include/spdk/bdev.h
index 097cca18c..ec453147b 100644
--- a/include/spdk/bdev.h
+++ b/include/spdk/bdev.h
@@ -133,8 +133,11 @@ struct spdk_bdev_io_stat {
 	uint64_t num_read_ops;
 	uint64_t bytes_written;
 	uint64_t num_write_ops;
+	uint64_t bytes_unmapped;
+	uint64_t num_unmap_ops;
 	uint64_t read_latency_ticks;
 	uint64_t write_latency_ticks;
+	uint64_t unmap_latency_ticks;
 	uint64_t ticks_rate;
 };
 
diff --git a/lib/bdev/bdev.c b/lib/bdev/bdev.c
index f5a97e319..cc6af3429 100644
--- a/lib/bdev/bdev.c
+++ b/lib/bdev/bdev.c
@@ -2010,8 +2010,11 @@ _spdk_bdev_io_stat_add(struct spdk_bdev_io_stat *total, struct spdk_bdev_io_stat
 	total->num_read_ops += add->num_read_ops;
 	total->bytes_written += add->bytes_written;
 	total->num_write_ops += add->num_write_ops;
+	total->bytes_unmapped += add->bytes_unmapped;
+	total->num_unmap_ops += add->num_unmap_ops;
 	total->read_latency_ticks += add->read_latency_ticks;
 	total->write_latency_ticks += add->write_latency_ticks;
+	total->unmap_latency_ticks += add->unmap_latency_ticks;
 }
 
 static void
@@ -3067,6 +3070,10 @@ _spdk_bdev_io_complete(void *ctx)
 			bdev_io->internal.ch->stat.num_write_ops++;
 			bdev_io->internal.ch->stat.write_latency_ticks += tsc_diff;
 			break;
+		case SPDK_BDEV_IO_TYPE_UNMAP:
+			bdev_io->internal.ch->stat.bytes_unmapped += bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen;
+			bdev_io->internal.ch->stat.num_unmap_ops++;
+			bdev_io->internal.ch->stat.unmap_latency_ticks += tsc_diff;
 		default:
 			break;
 		}
diff --git a/lib/bdev/rpc/bdev_rpc.c b/lib/bdev/rpc/bdev_rpc.c
index 1989f6d27..83d183ff9 100644
--- a/lib/bdev/rpc/bdev_rpc.c
+++ b/lib/bdev/rpc/bdev_rpc.c
@@ -76,12 +76,21 @@ spdk_rpc_get_bdevs_iostat_cb(struct spdk_bdev *bdev,
 		spdk_json_write_name(w, "num_write_ops");
 		spdk_json_write_uint64(w, stat->num_write_ops);
 
+		spdk_json_write_name(w, "bytes_unmapped");
+		spdk_json_write_uint64(w, stat->bytes_unmapped);
+
+		spdk_json_write_name(w, "num_unmap_ops");
+		spdk_json_write_uint64(w, stat->num_unmap_ops);
+
 		spdk_json_write_name(w, "read_latency_ticks");
 		spdk_json_write_uint64(w, stat->read_latency_ticks);
 
 		spdk_json_write_name(w, "write_latency_ticks");
 		spdk_json_write_uint64(w, stat->write_latency_ticks);
 
+		spdk_json_write_name(w, "unmap_latency_ticks");
+		spdk_json_write_uint64(w, stat->unmap_latency_ticks);
+
 		if (spdk_bdev_get_qd_sampling_period(bdev)) {
 			spdk_json_write_name(w, "queue_depth_polling_period");
 			spdk_json_write_uint64(w, spdk_bdev_get_qd_sampling_period(bdev));