set size of named.run log file

Hello,

after enabling query logging using rndc I have noticed that the resulting
named.run log file seems to be limit to approx. 20000000 bytes and rolls
over one time. Because of the amount of queries this file size does not
provide enough history in our case.

Can I set the size limit of the named.run file or the number of files to
keep?

Thanks in advance
Frank