Index: sys/dev/nvd/nvd.c
===================================================================
--- sys/dev/nvd/nvd.c
+++ sys/dev/nvd/nvd.c
@@ -65,6 +65,9 @@
 static void *nvd_new_disk(struct nvme_namespace *ns, void *ctrlr);
 
 static void *nvd_new_controller(struct nvme_controller *ctrlr);
+static void nvd_controller_async(void *ctrlr_arg,
+	const struct nvme_completion *async_cpl,
+	uint32_t log_page_id, void *log_page_buffer, uint32_t log_page_size);
 static void nvd_controller_fail(void *ctrlr);
 
 static int nvd_load(void);
@@ -157,7 +160,7 @@
 	TAILQ_INIT(&disk_head);
 
 	consumer_handle = nvme_register_consumer(nvd_new_disk,
-	    nvd_new_controller, NULL, nvd_controller_fail);
+	    nvd_new_controller, nvd_controller_async, nvd_controller_fail);
 
 	return (consumer_handle != NULL ? 0 : -1);
 }
@@ -264,6 +267,28 @@
 	mtx_unlock(&ndisk->bioqlock);
 }
 
+static void
+nvd_resize(struct nvd_disk *ndisk)
+{
+	struct disk		*disk = ndisk->disk;
+	struct nvme_namespace	*ns = ndisk->ns;
+
+	disk->d_sectorsize = nvme_ns_get_sector_size(ns);
+	disk->d_mediasize = (off_t)nvme_ns_get_size(ns);
+	disk->d_maxsize = nvme_ns_get_max_io_xfer_size(ns);
+	disk->d_delmaxsize = (off_t)nvme_ns_get_size(ns);
+	if (disk->d_delmaxsize > nvd_delete_max)
+		disk->d_delmaxsize = nvd_delete_max;
+
+	disk_resize(disk, M_NOWAIT);
+
+	printf(NVD_STR"%u: NVMe namespace resized\n", ndisk->unit);
+	printf(NVD_STR"%u: %juMB (%ju %u byte sectors)\n", disk->d_unit,
+		(uintmax_t)disk->d_mediasize / (1024*1024),
+		(uintmax_t)disk->d_mediasize / disk->d_sectorsize,
+		disk->d_sectorsize);
+}
+
 static void
 nvd_gonecb(struct disk *dp)
 {
@@ -502,6 +527,24 @@
 
 	return (ndisk);
 }
+static void
+nvd_controller_async(void *ctrlr_arg, const struct nvme_completion *async_cpl,
+	uint32_t log_page_id, void *log_page_buffer, uint32_t log_page_size)
+{
+	struct nvd_controller	*ctrlr = ctrlr_arg;
+	struct nvd_disk		*ndisk;
+
+	switch (log_page_id) {
+	case NVME_LOG_CHANGED_NAMESPACE:
+		mtx_lock(&nvd_lock);
+		TAILQ_FOREACH(ndisk, &ctrlr->disk_head, ctrlr_tailq)
+			nvd_resize(ndisk);
+		mtx_unlock(&nvd_lock);
+		break;
+	default:
+		break;
+	}
+}
 
 static void
 nvd_controller_fail(void *ctrlr_arg)