I’ve just been informed of an issue that occurs when running ESX in a VM on ESX. The team at PHD Virtual stumbled across this gem while trying to do CBT backups of their “ESX on ESX” sandbox environment.
It turns out that if you enable Changed-Block-Tracking (CBT) on the ESX virtul machine (VM) it changes how the VMDKs are presented to the ESX virual machine, causing it to be unable to mount!
So now your ESX VM has no storage!
As soon as you disable Changed-Block-Tracking on the VM the disks reappear when you rescan the scsi adapter or reboot the ESX virtual machine!
I’d be interested to see who else can replicate this?
More info on this issue as I get it!
