VMWare plugin large disk restores failing

[Leon Bartle]

Hi there!

I have had multiple regular VMWare backup->restore go successfully. Four virtual machines have failed to restore properly after I backed them up. 

All these VMs have in common, that they are the only VMs with really large disks. 3TB raw, 1,5Tb compressed. The backup and restore both take about 2:30h - 3:30h. The Machines OS is Redhat. 

On a regular restore, the filesystem fails to mount some paritions on boot and boots into rescue mode. This is only fixed by running a filesystem check, which finds and fixes multiple issues. 

When the source VM is deleted, and a restore is attempted, the VM fails to boot after Grub and the error message reads "Warning. Boot has failed. To debug this issue add "rd.shell rd.debug" to the kernel command line. (Which I currently cannot do because of missing permissions)

The only "error message" that appears in both the backup and restore log is:

python3-fd-mod: keepalive failed with The session is not authenticated., last keepalive was 12303.316767454147 s ago, trying to reconnect.

I have retried after adding a 60 sec heartbeat interval, but I suspect, that this value does not apply to the VMWare plugin.

Do you all have an idea on how to fix/debug this?

Kind Regards,

Leon