An update to this: I ran into something odd, I ran updates last Friday, on this Ubuntu box, and the backups haven't failed since. I have a week's worth of successful backups. On PTide's advice, I had created two additional backup jobs on this machine, another full and another volume backup, so we could see log information from new jobs on. After the updates, these jobs, and the ones that had been failing all started running successfully. Here are the logs, maybe someone curious will be able to find a solution in them. At this time, I assume the updates fixed something that was broken, but I am not sure what it was. I keep this box updated, as I have been doing with all of our Ubuntu boxes that I am testing.https://drive.google.com/folderview?id= ... sp=sharing
Thanks everyone, for your suggestions.