Date: Sun, 19 May 2019 01:58:44 +0000 From: Rick Macklem <rmacklem@uoguelph.ca> To: "freebsd-current@FreeBSD.org" <freebsd-current@FreeBSD.org> Subject: RFC w.r.t. toggling debugging on/off for mountd via a signal Message-ID: <YQXPR0101MB2055B12D1AB31D4F70AF2480DD050@YQXPR0101MB2055.CANPRD01.PROD.OUTLOOK.COM>
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Hi, I've been working with Peter Errikson on a patch for mountd that adds a new option for incremental updating of exports. This seems to be helping a lot w.r.t. performance on an NFS server with lots (10000+) of exported file systems. I have debug syslog() calls in the code, which I/Peter think would be worth keeping in the production code in case someone runs into problems with this new option. As such, I'd like to have the code compiled in by default (not only if DEBUG is defined, as mountd.c has now). I also was thinking it would be nice if the daemon didn't need to be restarted to enable/disable the debugging output, since that breaks NFS mounting during the restart. So, I was thinking of having the debugging output toggled on/off via SIGUSR1. What do you think of this idea? Any other/better ways to do this? Also, would LOG_DAEMON and LOG_DEBUG sound like the correct facility and priority for theses syslog() calls? Thanks in advance for any comments, rick
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