Resizing partition in centos after vmware hardisk extension

This is usually done, when the hardisk space for the CentOS VM is running low.

Check your current disk size

# fdisk -lu /dev/sda

To increase the size of the hardisk image, shutdown the centos VM

# poweroff

Increase the hardisk image in VMware

Power on the centos VM

Once logged in, check back whether you have increased your disk size

# fdisk -lu /dev/sda

Create new partition on the new disk space

# fdisk /dev/sda

Press:

n   {new partition}

p   {primary partition}

3   {partition number}

t    {change partition id}

8e {Linux LVM partition}

w  {write partition change to disk}

Reboot the vm

# reboot

Check the new partition

# fdisk -lu /dev/sda

Create physical volume (PV) on the new partition

# pvcreate /dev/sda3

Check list of PV

# pvs

Extend the current Volume Group (VG) to include the new PV, and check the new VG size

# vgextend centos /dev/sda3

# vgs

Extend the current Logical Volume (LV), and check the new size of logical volume 

# lvextend /dev/mapper/centos-root /dev/sda3

# lvs

Resize / partition

# resize2fs /dev/mapper/centos-root

Check the new size

# df -h /

before resize:

after resize: