I didn't try, but try to write rotation script with moving steps like:
- 004 -> /dev/nul or whatever
- 003 -> 004
- 002 -> 003
- 001 -> 002
- log -> 001
- touch log
- kill -HUP $SYSLOG_PID

As I said, this is top of my head so you will just need to test it...

hi,

it depends actually on the os you are using. for solaris, or other *nix/*nux variants, you may use the logadm utility or the rotatelog utility to do an online rotation of your logs

thanks