ovs setup failed for formatting error

ovs_setup_format_error

[root@openvstorage]# ovs setup
+++++++++++++++++++++++++++++
+++  Open vStorage Setup  +++
+++++++++++++++++++++++++++++

+++ Setting up connections +++

Enter the root password for this node
Password: 

+++ Collecting cluster information +++

  [127.0.0.1] dbus already running

  [127.0.0.1] avahi-daemon already running
No existing Open vStorage clusters are found.
Please enter the cluster name: testcluster
Found exactly one choice: 10.23.73.152
Analyzing cluster layout

+++ Peparing node +++

Exchanging SSH keys
Updating hosts files
Creating filesystems
0 ssd devices: []
13 sata drives: ['/dev/sde', '/dev/sdg', '/dev/sda', '/dev/sdb', '/dev/sdc', '/dev/sdl', '/dev/sdm', '/dev/sdn', '/dev/sdo', '/dev/sdh', '/dev/sdi', '/dev/sdj', '/dev/sdk']

Excluded: set([])
-> bootdisk or part of software RAID configuration

Proposed partition layout:
/mnt/bfs             :  device : /dev/sdg (4000 GB)   label : backendfs  percentage : 100  
/mnt/cache1          :  device : DIR_ONLY            
/mnt/db              :  device : DIR_ONLY            
/mnt/md              :  device : DIR_ONLY            
/var/tmp             :  device : /dev/sde (4000 GB)   label : tempfs     percentage : 100  

Make a choice:
 0: Add
 1: Remove
 2: Update
 3: Print
 4: Apply
 5: Quit

Enter number or name; return for next page
? 4

{'/dev/sdg': 100, '/dev/sde': 100}
Proposed partition layout:
/mnt/bfs             :  device : /dev/sdg (4000 GB)   label : backendfs  percentage : 100  
/mnt/cache1          :  device : DIR_ONLY            
/mnt/db              :  device : DIR_ONLY            
/mnt/md              :  device : DIR_ONLY            
/var/tmp             :  device : /dev/sde (4000 GB)   label : tempfs     percentage : 100  

Please confirm partition layout (yes/no), ALL DATA WILL BE ERASED ON THE DISKS ABOVE!:
? yes
Applying partition layout ...

Fatal error: run() received nonzero return code 1 while executing!

Requested: mkfs.ext4 -q /dev/sdg1 -L backendfs
Executed: /bin/bash -l -c "mkfs.ext4 -q /dev/sdg1 -L backendfs"

======================================================================= Standard output =======================================================================

/dev/sdg1 is apparently in use by the system; will not make a filesystem here!

===============================================================================================================================================================

Aborting.
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