the specified delta disk format 'redoLogFormat' is not supported.

[billdossett]

Vsphere 6.7 - I have created 4 templates this morning, 2 x centos and 2 x ubuntu.

Centos provisions fine

ubuntu i get the mentioned error.

found this

VMware Knowledge Base

however it seems to pertain to provisioning vdi's on horizon view.  Thats not what I am doing.

It has a clue regarding vmfs5, so I tried to provision specifically to vmfs6 and boom it works.

Problem is I need to distribute these templates to our global data centers and there's a lot of vmfs5 out there yet.

Any suggestions other than upgrading to vmfs6 would be appreciated.

Regards

Bill

[sjesse]

Is the template on a vmfs6 datastores, if so can you move it to a vmfs5 datstore and see if that fixes it. I'm not filesystem expert but I thought 6 addeded a new snapshot format, and provisioning from the vmfs6 to the vmfs5 might copy that format over.

[billdossett]

I already checked that, it was created on vmsf5...  it is hw version 11 which is 6.0 compatible, but I'm going to try to dial it back to earlier.

[billdossett]

hmm... it appears its because the vm that I converted to a template had a snapshot.  Cloned to a new VM and converted to template and it deploys fine.   I was under the impression that deploying would flatten the image as does cloning. 

[sjesse]

Good catch, I think it just changes the vmx to vmtx extension, and leaves the snapshots incase you convert it back.

Virtual Machine Files

[billdossett]

thanks...  but I was provisioning from the template, not converting it.  When I clone it, it flattens it, interesting to know that provisioning and cloning differ in that way.  But yeah, if you convert it it just flips the extension and i think there might be a flag in the vmx IIRC.