There’s no good reason to have one single 20mb log file, unless your plan is to be able to wipe it easily with a script to cover your tracks.
A Cisco router default log:
“The typical default size of a router’s logging buffer is 4,096 bytes (although some high-end routers will default to a higher value). A buffer of this size can hold approximately 50 log messages before overwriting occurs. Fifty messages, although better than no logging, is relatively small, and most engineers will want increase their buffer size to store more messages”
Our elections are a wee bit more important than a router. AZ auditors don’t even have access to the routers yet so this log is inside a voting machine, scanner or tabulator. Like I said, storage is dirt cheap and tiny. Code to create multiple sequential files is easy. There’s no good reason to not store every bit of logs from start to finish in an election. I don’t think these logs were for troubleshooting but were for logging who accessed the system and when — activity log. Different situation.
Dominion was first designed to steal elections in Venezuela. Every design flaw is no flaw at all. They are by purposeful for cheating. Dominion employees were the only people who had admin access to be able to run a script and fill that log file with nothing useful.