5.3.5. Making a File System and Mounting the New Logical Volume

You can make a file system on the new logical volume and mount it. 
[root@tng3-1 ~]#  gfs_mkfs -plock_nolock -j 1 /dev/yourvg/yourlv
This will destroy any data on /dev/yourvg/yourlv.

Are you sure you want to proceed? [y/n] y

Device:                    /dev/yourvg/yourlv
Blocksize:                 4096
Filesystem Size:           1277816
Journals:                  1
Resource Groups:           20
Locking Protocol:          lock_nolock
Lock Table:

Syncing...
All Done

[root@tng3-1 ~]# mount /dev/yourvg/yourlv /mnt