Dmitry Bogatov:
After some investigation I found code, that caused issue, but it seems that it was written with some purpose, yet I fail to understand that purpose.
What you need are manuals that tell you about this mechanism. (-: * http://jdebp.eu./Softwares/nosh/guide/cyclog.html#COMPATIBILITY * http://skarnet.org./software/s6/s6-log.html#Logdirs * http://jdebp.eu./Softwares/djbwares/guide/multilog.html#ROTATION * http://smarden.org/runit/svlogd.8.html#sect4