It's not definitive but there is an open bug for roll on startup. http://jira.qos.ch/browse/LOGBACK-204

Only thing definitive is the source code. 

David

On 5 Jun 2013, at 19:26, Steve Cohen <scohen@javactivity.org> wrote:

Hmm, I have rolled my own roll-on-startup policy but that is not, as written compatible with a roll-by-day setup, as it uses different file naming conventions.  I use it for personal debugging but not in production.  I'm not sure it's possible to combine the two in a single policy, if in fact, the default time-based policy does NOT roll on startup the app wasn't running at the boundary crossing.

Can I get a definitive answer on whether the default time-based policy will roll on startup if the application wasn't running at the boundary crossing?

On 06/05/2013 12:59 PM, David Roussel wrote:
Have you looked at the changes since 1.0.7 to see if any apply?

Lack of rolling is curtly a difficult one to debug. Best way is to
configure one roll per minute or more often and do a soak test.

Roll at startup is discussed here.
http://stackoverflow.com/questions/2492022/how-to-roll-the-log-file-on-startup-in-logback

David

On 5 Jun 2013, at 18:46, Steve Cohen <scohen@javactivity.org
<mailto:scohen@javactivity.org>> wrote:

On 06/05/2013 12:35 PM, Robert Kuhar wrote:
Also, if your app isn't running when the trigger is me, it is my
understanding and observation that the logs won't roll.

"When the trigger is me"?  What does this mean?  I had thought that
the rollover would happen whenever the day (in my case) crossed the
boundary from the last entry.  But that could easily be wrong.

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