Multiple Applications down after TAS upgraded to 10.2.x

Products

• VMware Tanzu Platform - Cloud Foundry

Issue/Introduction

After TAS was upgraded to 10.2.x (from 6.0.x), multiple applications went down and were failing to start up.

Restaging an app failed with an error:

2026-05-08T20:01:58.433+05:30 [API/5] [ERR] Failed to stage build: found no compatible cell for required rootfs

 

In this case, the app is using the 'cflinuxfs3' stack as shown in the output of 'cf app $appname':

$ cf app test
Showing health and status for app test in org test / space test as admin...

name:              test
requested state:   started
routes:            test.example.com
last uploaded:     Fri 08 May 18:21:47 UTC 2026
stack:             cflinuxfs3

 

The foundation doesn't have 'cflinuxfs3' stack anymore as shown in the output of 'cf stacks'.  Only 'cflinuxfs4' is available.

$ cf stacks
Getting stacks as admin...

name         description
cflinuxfs4   Cloud Foundry Linux-based filesystem - Ubuntu Jammy 22.04 LTS

Environment

VMware Tanzu Elastic Application Runtime

Cause

The failures were due to the fact that the apps are still using the 'cflinuxfs3' stack, which is no longer available in v10.2.x and above. 

Note that as part of TAS upgrade preparations from v6.0.x to v10.x.x, operators must migrate any cflinuxfs3-based apps to use 'cflinuxfs4'.  

Resolution

If the apps should continue to use 'cflinuxfs3' in the interim, install and configure the Extended App Support Tile to install the 'cflinuxfs3' stack.  Apply Changes on this tile and the TAS tile.

Once installed and all diego cells have been updated, the impacted apps (using cflinuxfs3) should recover successfully.