CentOS Mount USB Device and Extend Volume

To mount USB device edit /etc/fstab as root on CentOS

/dev/sdb1 /media/USBDEVICE2 ntfs-3g rw,umask=0000,defaults 0 0
/dev/sdb1 /media/USBDEVICE1 vfat rw,umask=0000,defaults 0 0 

To expand volume on CentOS after resizing in VirtualBox and GParted

[root@flo ~]# lvm vgdisplay

[root@flo ~]# lvextend -l +100%FREE /dev/mapper/vg_danube-lv_root

[root@florida ~]# df -T
Filesystem           Type  1K-blocks    Used Available Use% Mounted on
/dev/mapper/vg_danube-lv_root
                     ext4    8648080 7608976    949924  89% /
tmpfs                tmpfs    961132     152    960980   1% /dev/shm
/dev/sda1            ext4     487652   87980    374072  20% /boot

Volume still not resized.

[root@flo ~]# resize2fs  /dev/mapper/vg_danube-lv_root
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/mapper/vg_danube-lv_root is mounted on /; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 2
Performing an on-line resize of /dev/mapper/vg_danube-lv_root to 4728832 (4k) blocks.
The filesystem on /dev/mapper/vg_danube-lv_root is now 4728832 blocks long.

[root@flo ~]# df -T
Filesystem           Type  1K-blocks    Used Available Use% Mounted on
/dev/mapper/vg_danube-lv_root
                     ext4   18486004 7612456  10685860  42% /
tmpfs                tmpfs    961132     304    960828   1% /dev/shm
/dev/sda1            ext4     487652   87980    374072  20% /boot

Now volume has been resized.