I've got 5 VM with thick provisioned disks of various sizes on a datastore.
I'd like to reclaim some of the wasted space I provisioned on this host. Is there a way I can tell ESXi to reclaim unused space once I boot off a G-parted disc and reduce the partition size of the VM's? Is there any other way to do it? I only have a couple GB's left on the datastore.
I am not sure if you can do that with GParted on ESXi ... you could try using VMware Converter to move a VM to a Windows PC and then convert it back to ESXi using thin provisioning. I'm assuming that you have plenty of free space in your thick provisioned VMs right?
With a partition program you will not change the vmdk size, but only the partition size inside the VM.
As written use the Converter.