Wednesday, January 3, 2018

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:







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