Exclusively Mounted filesystem?

Hello all,

I am try to create lvm partitions in aws centos 6.5 the showing this error "pvcreate /dev/xvde1
Can’t open /dev/xvde1 exclusively. Mounted filesystem?
"
fdisk -l

Disk /dev/xvde: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 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: 0x51eb0d7a

Device Boot      Start         End      Blocks   Id  System

/dev/xvde1 1 947 7606746 8e Linux LVM
[root@ip-172-31-7-174 /]# pvcreate /dev/xvde1
Can’t open /dev/xvde1 exclusively. Mounted filesystem?

Kindly help me

Thanks

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