I have created pv on /dev/sda5
But now if I do 'pvs'
Then it shows
Two pv with same name as following
/dev/sda5 . . .
/dev/sda5. . .
And if I do pvdisplay
Then it show to pv with same uuid
What would be the reason of it

Can you post the output of the following commands:You might want to have a look at these links:
- Logical Volume Manager (Linux)
- Logical volume management
- Logical volume manager

[root@sud ~]# fdisk -l |grep sda5
Disk /dev/md127 doesn't contain a valid partition table
Disk /dev/dm-0 doesn't contain a valid partition table
Disk /dev/dm-1 doesn't contain a valid partition table
/dev/sda5 64 128 512000 83 Linux
[root@sud ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/md127 wgroup lvm2 a- 1.95g 396.00m
/dev/sda5 wgroup lvm2 a- 496.00m 496.00m
/dev/sda5 wgroup lvm2 a- 496.00m 496.00m
[root@sud ~]# pvdisplay
--- Physical volume ---
PV Name /dev/md127
VG Name wgroup
PV Size 1.95 GiB / not usable 2.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 499
Free PE 99
Allocated PE 400
PV UUID CTSnMh-Aee6-om1S-1iFp-WKKT-pxqZ-9YhVhb

--- Physical volume ---
PV Name /dev/sda5
VG Name wgroup
PV Size 500.00 MiB / not usable 4.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 124
Free PE 124
Allocated PE 0
PV UUID 3w1oZt-b2u1-ZVPm-I0V3-dfPn-mfOl-yDTL5B

--- Physical volume ---
PV Name /dev/sda5
VG Name wgroup
PV Size 500.00 MiB / not usable 4.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 124
Free PE 124
Allocated PE 0
PV UUID 3w1oZt-b2u1-ZVPm-I0V3-dfPn-mfOl-yDTL5B

Except for the double entries for /dev/sda5 I can only see one thing that isn't correct:It seems that sda5 has a Linux label, this should be a LVM label (8e Linux LVM).

I'm not 100% sure if this is the cause of your issue, but it is a place to start.