ADVERTISE HERE

Changed-Block-Tracking on an ESX VM in ESX causes VMDK Mount Issue!

Title: Changed-Block-Tracking on an ESX VM in ESX causes VMDK Mount Issue!
Author(s): (PHD Virtual) Patrick Redknap
Target Audience: Technical - Intermediate
Current Revision:
First Published: 9 April 2010
Products: VMware ESX
UID: XD10252
Posted Fri, 09/04/2010 - 12:11 by xtravirt

Missing ESX VM Storage? See if this simple change could be the cause

Punchy Text: 

Missing ESX VM Storage? See if this simple change could be the cause

By Patrick Redknap - Virtualization-Spotlight: News in the Virtualization World sponsored by PHD Virtual

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?

Spotlight:

Posted Fri, 11/09/2009 - 16:40 by xtravirt

VMware Documentation Downloader v11.08.30

Updated for vSphere 5 - A free tool for those on the move who need information FAST

vSphere 5 License Entitlement Changes

See what has changed in the license entitlement in vSphere 5?

Thin Client vs Zero Client

The differences between Thin and Zero desktop clients for VDI

Technology Exchange:

Posted Fri, 11/09/2009 - 16:42 by xtravirt