Resizing root virtual disk on the CentOS

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http://www.unix.com – Hello, Can someone suggest me what I missing, I re-sized a root virtual disk to 30GB on the CentOS VM. After re-sizing the disk, I booted the OS and ran fdisk -list command I was able view the size of the disk as 30GB. Paritions in the vm before I resize are: /boot - Primary parition / and swap are logical volumes filesystem. but when I ran pvdisplay command I see the same output, but not sure how to scan the additional size that I added to virtual disk and bring it under lvm. Thanks, (HowTos)