Linux mount挂载磁盘报错 mount: wrong fs type, bad option, bad superblock on /dev/vdb

mount: wrong fs type, bad option, bad superblock on 192.168.0.68:/mnt,
       missing codepage or helper program, or other error
       (for several filesystems (e.g. nfs, cifs) you might
       need a /sbin/mount.<type> helper program)
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

yum install nfs-utils

[root@localhost ~]# fdisk -l

Disk /dev/vda: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00020f78

   Device Boot      Start         End      Blocks   Id  System
/dev/vda1   *           1        5222    41940992   83  Linux

Disk /dev/vdb: 64.4 GB, 64424509440 bytes
16 heads, 63 sectors/track, 124830 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x41398dd0

[root@localhost ~]# mkfs -t ext4 /dev/vdb1

[root@localhost ~]# mount /dev/vdb1 /mnt

[root@localhost ~]# df -Th
Filesystem     Type   Size  Used Avail Use% Mounted on
/dev/vda1      ext4    40G   35G  2.8G  93% /
tmpfs          tmpfs  3.9G     0  3.9G   0% /dev/shm
/dev/vdb1      ext4    59G   1G   58G  99% /mnt

[root@localhost ~]# lsblk -f
NAME   FSTYPE LABEL UUID                                 MOUNTPOINT
vda                                                      
└─vda1 ext4         1ae5f12f-79c1-47d4-************* /
vdb                                                      
└─vdb1 ext4         1e3cb065-e1ad-4ee1-************* /mnt

vi /etc/fstab

UUID=1e3cb065-e1ad-4ee1-******* /mnt ext4 defaults 0 0