Increase VM disk

Solution In Progress - Updated -

Issue

After increasing the block device on the KVM hypervisor, the new size id not reflected on the
Virtual Machine Red Hat Enterprise Linux 6.5.

The hypervisor is running Red Hat Enterprise Linux 6.5.

These are the steps performed:

pvscan
pvresize /dev/vdb 
hdparm -z /dev/vdb

Is it possible to resize the Virtual Machine disk online?

Environment

Red Hat Enterprise Linux (RHEL) 6.5

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