Knowledge Base

The VMware Knowledge Base provides support solutions, error messages and troubleshooting guides
 
Search the VMware Knowledge Base (KB)   View by Article ID
 

Turning on or enabling Fault Tolerance for a powered-on virtual machine with lazyzeroed virtual disks fails

Symptoms

  • Turning on or enabling Fault Tolerance for a powered-on virtual machine with lazyzeroed virtual disks fails
  • The virtual machine fails
  • You receive this error:

    Jul 02 17:57:48.800: vmx| Msg_Post: Error
    Jul 02 17:57:48.800: vmx| [msg.disk.invalidClusterDisk] VMware ESX cannot open the virtual disk, "/vmfs/volumes/483df5c2-c1afaa7a-e5e2-001d0967f2a4/thickFTVM4/thickFTVM4.vmdk" for clustering. Please verify that the virtual disk was created using the 'thick' option.
    Jul 02 17:57:48.800: vmx| [msg.disk.noBackEnd] Cannot open the disk '/vmfs/volumes/483df5c2-c1afaa7a-e5e2-001d0967f2a4/thickFTVM4/thickFTVM4.vmdk' or one of the snapshot disks it depends on.
    Jul 02 17:57:48.801: vmx| [msg.disk.configureDiskError] Reason: @&!*@*@(msg.disklib.INVALIDMULTIWRITER)Thin/TBZ disks cannot be opened in multiwriter mode..----------------------------------------
    Jul 02 17:57:48.807: vmx| Checkpoint error 0, couldn't continue after checkpoint
    Jul 02 17:57:52.414: vmx| Backtrace:
    Jul 02 17:57:52.414: vmx| Backtrace[0] 0xffeeaec8 eip 0xc1abca0

Resolution

If you try to turn on Fault Tolerance (FT) for a powered-on virtual machine with lazyzeroed virtual disks, the operation fails and the secondary virtual machine is not created.
 
To workaround the issue:
  1. Power off the virtual machine.
  2. Turn on (or enable) FT.
  3. Power the virtual machine back on. The virtual disks are correctly converted to eagerzeroed disks and the operation continues.

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.

Feedback

Did this article help you?
This article resolved my issue.
This article did not resolve my issue.
This article helped but additional information was required to resolve my issue.
What can we do to improve this information? (4000 or fewer characters)
Actions
  • Bookmark Document
  • Email Document
  • Print Document
  • Subscribe to Document
  • Bookmark and Share