The environment variable to change for filename is EPICS_IOC_LOG_FILE_NAME
and must be changed as Brian and Andrew described, not on the IOC, but on
the machine hosting the logserver process and log file (SUN, HP, etc.) We
have a startup script that is executed when the host is booted so that the
iocLogServer is automatically restarted, and the environment variables are
setup in the script. (On our SUN, the script is in rc3.d) I'm puzzled that
"mv"ing the file results in having the logServer continue to write to the file
in the new location, though. Maybe there's some system magic that keeps track
of the file as long as it remains open for writing??
deb
>
> Robert Willson wrote:
> >
> > I have a rather odd problem with the logfile. It seems that I cannot
> > change where the logfile goes, even if I change the name in resource.def.
>
> >Stranger still, if I move (mv) the file to a different directory, EPICS
> >continues to write to that file, instead of creating a new one in the old
> >directory. I do not understand this behavior.
>
> The location is not under the control of the IOC - any resource.def
> setting for the log filename will be ignored. You have to change that
> setting for the log server (using environment variables before you start
> it) if you want to move the file, and if you want multiple files I think
> you have to run multiple servers on different port numbers.
>
> - Andrew
> --
>
> The limit is in iocLogServer, and is controlled by the environment variable
> EPICS_IOC_LOG_FILE_LIMIT, which normally defaults to 1MB. You can either
> change the default (CONFIG_SITE_ENV in $EPICS_BASE/config is the right
> place for that) or you can set it in the environment before you start the
> logServer.
>
> ----
> Brian McAllister Controls Programmer/Beam Physicist
> [email protected] MIT-Bates Linear Accelerator
>
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