[715524263] Upstream Reporter: Daniel J Walsh
Upstream issue status: Closed
Upstream description:

Currently conmon just truncates the log file when max is reached, this means we loose all of the data.

I think we should allow for a backup file. So when log-size-max is reached we rename the existing file to a .1 version. Now when the user reads the full log file they would read the .1 file first and then the main log file. This would mean we would always have log-size-max data available, after we fill it up. If .1 already existed, we would loose that data.

Since user asked for log-size-max, we should probably do the rename at log-size-max/2 to grant their wishes.

@haircommander @giuseppe @vrothberg @mheon WDYT?