diff --git a/utils/src/format.h b/utils/src/format.h
index 6c37816d..909c9894 100644
--- a/utils/src/format.h
+++ b/utils/src/format.h
@@ -243,14 +243,12 @@ struct scoutfs_segment_block {
 #define SCOUTFS_FS_ZONE				3
 
 /* inode index zone */
-#define SCOUTFS_INODE_INDEX_CTIME_TYPE		1
-#define SCOUTFS_INODE_INDEX_MTIME_TYPE		2
 #define SCOUTFS_INODE_INDEX_SIZE_TYPE		3
 #define SCOUTFS_INODE_INDEX_META_SEQ_TYPE	4
 #define SCOUTFS_INODE_INDEX_DATA_SEQ_TYPE	5
 
 #define SCOUTFS_INODE_INDEX_NR \
-	(SCOUTFS_INODE_INDEX_DATA_SEQ_TYPE - SCOUTFS_INODE_INDEX_CTIME_TYPE + 1)
+	(SCOUTFS_INODE_INDEX_DATA_SEQ_TYPE - SCOUTFS_INODE_INDEX_SIZE_TYPE + 1)
 
 /* node zone */
 #define SCOUTFS_FREE_EXTENT_BLKNO_TYPE	11
diff --git a/utils/src/ioctl.h b/utils/src/ioctl.h
index c1e7f6f9..e9a78db0 100644
--- a/utils/src/ioctl.h
+++ b/utils/src/ioctl.h
@@ -51,9 +51,7 @@ struct scoutfs_ioctl_walk_inodes {
 } __packed;
 
 enum {
-	SCOUTFS_IOC_WALK_INODES_CTIME = 0,
-	SCOUTFS_IOC_WALK_INODES_MTIME,
-	SCOUTFS_IOC_WALK_INODES_SIZE,
+	SCOUTFS_IOC_WALK_INODES_SIZE = 0,
 	SCOUTFS_IOC_WALK_INODES_META_SEQ,
 	SCOUTFS_IOC_WALK_INODES_DATA_SEQ,
 	SCOUTFS_IOC_WALK_INODES_UNKNOWN,
diff --git a/utils/src/key.c b/utils/src/key.c
index 46bc1420..99730c75 100644
--- a/utils/src/key.c
+++ b/utils/src/key.c
@@ -34,8 +34,6 @@ int print_key(void *key_data, unsigned key_len)
 	case SCOUTFS_INODE_INDEX_ZONE: {
 		struct scoutfs_inode_index_key *ikey = key_data;
 		static char *type_strings[] = {
-			[SCOUTFS_INODE_INDEX_CTIME_TYPE]	= "ctm",
-			[SCOUTFS_INODE_INDEX_MTIME_TYPE]	= "mtm",
 			[SCOUTFS_INODE_INDEX_SIZE_TYPE]		= "siz",
 			[SCOUTFS_INODE_INDEX_META_SEQ_TYPE]	= "msq",
 			[SCOUTFS_INODE_INDEX_DATA_SEQ_TYPE]	= "dsq",
diff --git a/utils/src/mkfs.c b/utils/src/mkfs.c
index 6182d199..943ffd8d 100644
--- a/utils/src/mkfs.c
+++ b/utils/src/mkfs.c
@@ -258,9 +258,9 @@ static int write_new_fs(char *path, int fd)
 
 	mkey->level = 1;
 	idx_key->zone = SCOUTFS_INODE_INDEX_ZONE;
-	idx_key->type = SCOUTFS_INODE_INDEX_CTIME_TYPE;
-	idx_key->major = cpu_to_be64(tv.tv_sec);
-	idx_key->minor = cpu_to_be32(tv.tv_usec * 1000);
+	idx_key->type = SCOUTFS_INODE_INDEX_SIZE_TYPE;
+	idx_key->major = 0;
+	idx_key->minor = 0;
 	idx_key->ino = cpu_to_be64(SCOUTFS_ROOT_INO);
 
 	mval->segno = cpu_to_le64(first_segno);
@@ -285,7 +285,6 @@ static int write_new_fs(char *path, int fd)
 	/* write seg with root inode */
 	sblk->segno = cpu_to_le64(first_segno);
 	sblk->seq = cpu_to_le64(1);
-	sblk->nr_items = cpu_to_le32(5);
 	prev_link = &sblk->skip_links[0];
 
 	item = (void *)(sblk + 1);
@@ -293,30 +292,20 @@ static int write_new_fs(char *path, int fd)
 	prev_link = &item->skip_links[0];
 
 	/* write the root inode index keys */
-	for (i = SCOUTFS_INODE_INDEX_CTIME_TYPE;
+	for (i = SCOUTFS_INODE_INDEX_SIZE_TYPE;
 	     i <= SCOUTFS_INODE_INDEX_META_SEQ_TYPE; i++) {
 
 		item->key_len = cpu_to_le16(sizeof(*idx_key));
 		item->val_len = 0;
 		item->nr_links = 1;
+		le32_add_cpu(&sblk->nr_items, 1);
 
 		idx_key = (void *)&item->skip_links[1];
 		idx_key->zone = SCOUTFS_INODE_INDEX_ZONE;
 		idx_key->type = i;
 		idx_key->ino = cpu_to_be64(SCOUTFS_ROOT_INO);
-
-		switch(i) {
-		case SCOUTFS_INODE_INDEX_CTIME_TYPE:
-		case SCOUTFS_INODE_INDEX_MTIME_TYPE:
-			idx_key->major = cpu_to_be64(tv.tv_sec);
-			idx_key->minor = cpu_to_be32(tv.tv_usec * 1000);
-			break;
-		default:
-			idx_key->major = cpu_to_be64(0);
-			idx_key->minor = 0;
-			break;
-		}
-
+		idx_key->major = 0;
+		idx_key->minor = 0;
 
 		item = (void *)(idx_key + 1);
 		*prev_link = cpu_to_le32((long)item -(long)sblk);
@@ -331,6 +320,7 @@ static int write_new_fs(char *path, int fd)
 	item->key_len = cpu_to_le16(sizeof(struct scoutfs_inode_key));
 	item->val_len = cpu_to_le16(sizeof(struct scoutfs_inode));
 	item->nr_links = 1;
+	le32_add_cpu(&sblk->nr_items, 1);
 
 	ikey->zone = SCOUTFS_FS_ZONE;
 	ikey->ino = cpu_to_be64(SCOUTFS_ROOT_INO);
diff --git a/utils/src/print.c b/utils/src/print.c
index 3b3b4367..08be009b 100644
--- a/utils/src/print.c
+++ b/utils/src/print.c
@@ -248,7 +248,7 @@ typedef void (*print_func_t)(void *key, int key_len, void *val, int val_len);
 static print_func_t find_printer(u8 zone, u8 type)
 {
 	if (zone == SCOUTFS_INODE_INDEX_ZONE &&
-	    type >= SCOUTFS_INODE_INDEX_CTIME_TYPE  &&
+	    type >= SCOUTFS_INODE_INDEX_SIZE_TYPE  &&
 	    type <= SCOUTFS_INODE_INDEX_DATA_SEQ_TYPE)
 		return print_inode_index;
 
diff --git a/utils/src/walk_inodes.c b/utils/src/walk_inodes.c
index 5d06c4cd..045b6976 100644
--- a/utils/src/walk_inodes.c
+++ b/utils/src/walk_inodes.c
@@ -82,10 +82,6 @@ static int walk_inodes_cmd(int argc, char **argv)
 
 	if (!strcasecmp(argv[0], "size"))
 		walk.index = SCOUTFS_IOC_WALK_INODES_SIZE;
-	else if (!strcasecmp(argv[0], "ctime"))
-		walk.index = SCOUTFS_IOC_WALK_INODES_CTIME;
-	else if (!strcasecmp(argv[0], "mtime"))
-		walk.index = SCOUTFS_IOC_WALK_INODES_MTIME;
 	else if (!strcasecmp(argv[0], "meta_seq"))
 		walk.index = SCOUTFS_IOC_WALK_INODES_META_SEQ;
 	else if (!strcasecmp(argv[0], "data_seq"))