@dmaret I have done some more reading on topics that show the same error messages (1, 2) and the more I read the more I can imagine the messages from the Realtek driver not to be the cause of the problem but maybe just one of the symptoms of a kernel issue (even a soft crash) just before that.
Do you have more than one of these Lenovo ThinkCentre M70a? Have you tried deploying to different ones? Do all show the same issue? Just trying to rule out this is not a hardware issue on one of the machines.
I am not too sure how to take this further. We don’t see other error messages on screen. Does the partclone screen seem to freeze completely after the error messages come up?
Maybe you can schedule a debug deploy task, boot up the machine, set a root password (command passwd), check the IP address (ip a s) and connect to it via SSH. Now you have two command shells to go ahead. Start the deployment (command fog) on the machine directly and step through it. Meanwhile also issue a command on the SSH shell just to see it’s still up and running. Especially when the blue partclone screen starts you want to stick around in the SSH shell to see if that freezes at some point - e.g. just type random characters to see if they appear on screen or stop at some point.
If partclone stops but your SSH shell still works, then run dmesg | tail -20, take a picture and post that here.