The Geek Stuff posted 4 methods to identify your file system type

Question: How do I identify my file system type? I like to upgrade my current file system to the latest ext4. Before that I would like to know what my current file system type is for various mount points I have on my UNIX system.

Answer: Use any one of the four methods mentioned below to identify your file system type.

First, do a df -h and identify the device name and the mount point where it is mounted on.

  4 Methods to Identify Your Linux File System Type (Ext2 or Ext3 or Ext4)