I faced multiple times the issue that the progress bar of the upgrade page of an VDP appliance does not show any status. Therefore I started search for an log file where it is possible to get at least basic upgrade status messages.
During my search I found the VMware KB: 2062947. This KB shows a log file which contains some status messages of the upgrade process.
Log file name: vdr-configure.log
The log messages are shown mainly in the following format:[pool-5-thread-5]-scheduler.AviStateMachine: Switching state from INSTALLATION_IN_PROGRESS to INSTALLATION_COMPLETE
I have seen a couple of these messages from failure to sucess.
|PACKAGES_AVAILABLE||Upgrade ISO found|
|INSTALLATION_IN_PROGRESS||Upgrade in Progress|
|INSTALLATION_STALLED||Upgrade failed see KB 2062947|
|INSTALLATION_COMPLETE||Upgrade successful installed|
So you can simple grep for these messages to get at least basic status messages.
tail -200lf /usr/local/avamar/var/vdr/server_logs/vdr-configure.log | egrep -wi --color 'PACKAGES_AVAILABLE|DEPLOYING_PACKAGE|INSTALLATION_IN_PROGRESS|INSTALLATION_STALLED|INSTALLATION_COMPLETE'
I will extend the list if I find more status messages.