You don't mention which is the virtualization environment.
I just tested in vCenter 6 and I was able to increase the disk size with 1MB.
Could you tell us the guest OS involved as well as the VMware Product. In short it is possible, but it is not as simple as just expanding the disk.
Edward L. Haletky
VMware vExpert 2009-2017, VMTN Community Moderator
The OS is Centos5/Centos6. One of the partition inside is EFS and only this partition needs to be resized after Virtual Disk is expanded. We have scripts which take care of the EFS partition resizing and all works fine if I expand the Virtual disk with ,let's say, 1G. Our Linux VM machines are deployed in variety of platforms : VMware workstation 12, ESXi5.5 , ESXi 6 , vCenter 5, vCenter6.