diff --git a/utils/src/format.h b/utils/src/format.h
index 5a01f57b..95f732c9 100644
--- a/utils/src/format.h
+++ b/utils/src/format.h
@@ -368,6 +368,7 @@ struct scoutfs_super_block {
 	__le64 alloc_cursor;
 	struct scoutfs_btree_ring bring;
 	__le64 next_seg_seq;
+	__le64 next_node_id;
 	struct scoutfs_btree_root alloc_root;
 	struct scoutfs_manifest manifest;
 	struct scoutfs_inet_addr server_addr;
@@ -514,6 +515,7 @@ struct scoutfs_lock_name {
 struct scoutfs_net_greeting {
 	__le64 fsid;
 	__le64 format_hash;
+	__le64 node_id;
 } __packed;
 
 /*
diff --git a/utils/src/mkfs.c b/utils/src/mkfs.c
index 678114ef..275a0347 100644
--- a/utils/src/mkfs.c
+++ b/utils/src/mkfs.c
@@ -226,6 +226,7 @@ static int write_new_fs(char *path, int fd)
 	super->next_seq = cpu_to_le64(1);
 	super->total_blocks = cpu_to_le64(total_blocks);
 	super->next_seg_seq = cpu_to_le64(2);
+	super->next_node_id = cpu_to_le64(1);
 
 	/* align the btree ring to the segment after the super */
 	blkno = round_up(SCOUTFS_SUPER_BLKNO + 1, SCOUTFS_SEGMENT_BLOCKS);
diff --git a/utils/src/print.c b/utils/src/print.c
index 5b67f564..95b7ff45 100644
--- a/utils/src/print.c
+++ b/utils/src/print.c
@@ -457,6 +457,7 @@ static void print_super_block(struct scoutfs_super_block *super, u64 blkno)
 
 	/* XXX these are all in a crazy order */
 	printf("  next_ino %llu next_seq %llu next_seg_seq %llu\n"
+	       " next_node_id %llu\n"
 	       "  total_blocks %llu free_blocks %llu alloc_cursor %llu\n"
 	       "  btree ring: first_blkno %llu nr_blocks %llu next_block %llu "
 	       "next_seq %llu\n"
@@ -465,6 +466,7 @@ static void print_super_block(struct scoutfs_super_block *super, u64 blkno)
 		le64_to_cpu(super->next_ino),
 		le64_to_cpu(super->next_seq),
 		le64_to_cpu(super->next_seg_seq),
+		le64_to_cpu(super->next_node_id),
 		le64_to_cpu(super->total_blocks),
 		le64_to_cpu(super->free_blocks),
 		le64_to_cpu(super->alloc_cursor),