Setting defragsvc Startup Type will not Persist

[Darryl Sakach]

FSLogix requires defragsvc (Optimize drives) be running in order for profile VHD compaction to function at user log off.

 

I have changed the defrag svc to Manual as recommended by MS. I have tried to do this in the FSLogix app layer, OS Layer and Platform Layer. In all cases after finalizing the layer the Startup Type reverts to disabled. This is the case in another layer version and a published image. Changes to other services startup type persist without issue.

 

How do I set the required startup type for defragsvc in an app layer?

 

What is changing the setting back to disabled? There is no entry in the Event Log showing this change.  

[Darryl Sakach]

We added a Layer Script to the FSLogix App Layer that sets the service to Manual on startup.

[Rob Zylowski]

When App layering is used the degrag service is always disabled because it would cause lots of issues.  So I dont think you are going to be able to use that feature.  I am making the engineering team aware of the issue.

[Darryl Sakach]

3 minutes ago, Rob Zylowski1709158051 said:

When App layering is used the degrag service is always disabled because it would cause lots of issues.  So I dont think you are going to be able to use that feature.  I am making the engineering team aware of the issue.

Thank you Rob.

 

Is it only an issue for packaging or publishing? Could it be set in the running vDisk (gpo, startup script)?

[Rob Zylowski]

Let me ask the enigineers

[Rob Zylowski]

They think it wont work but I don't think they have tested that in a long time.  I would say try it on a test cat/delivery group yourself and see what happens.  But it definitely might not work out.

[Darryl Sakach]

We do not use UPM, we use FSLogix, but I just noted that it recently rolled out for UPM as well.

 

Seems reasonable that it would then be supported on PVS. I cannot find any confirmation of that.

[Rob Zylowski]

UPM?

[Darryl Sakach]

Citrix Profile Management

 

https://docs.citrix.com/en-us/profile-management/current-release/configure/vhd-disk-compaction.html 

[Rob Zylowski]

Are you using elastic layering or just published images.  If just published images your right I dont think it would matter if you enable the service on boot.

[Darryl Sakach]

No elastic layers, just published images.

 

We will try it out.

[Jeff Riechers]

What I do is set it to manual, but not started via GPO.  That way Windows won't try and optimize the disks, and FSLogix can start it to get access to the trim function in the defrag service.

Edited May 22, 2023 by Jeff Riechers
Clarification