In this /etc/filesystems entry for a JFS file system created on an LVM logical volume, /mount_point2 is the mount point for the file system, /dev/LVMlogical_volume is the block device on which the file system is created, /dev/LVMlogical_volumelog is the log device for the file system automatically created by the crfs command, and jfs is the file system type.

/etc/filesystems:
/mount_point2:
           dev    = /dev/LVMlogical_volume
           vfs    = jfs
           log    = /dev/LVMlogical_volumelog
           mount  = false
           check  = false