Date: Tue, 13 Jul 1999 13:20:55 -0700 (PDT) From: Doug <Doug@gorean.org> To: freebsd-hackers@freebsd.org Cc: peter@netplex.com.au Subject: Re: more amd hangs: problem really in syslog? Message-ID: <Pine.BSF.4.05.9907131231470.16527-100000@dt054n86.san.rr.com> In-Reply-To: <Pine.BSF.4.05.9907121510290.7793-100000@dt054n86.san.rr.com>
next in thread | previous in thread | raw e-mail | index | archive | help
After pounding on this some more with today's -current (prior to
the MNT_ASYNC flag change) I got a lot more lockups that looked like
this:
On Mon, 12 Jul 1999, Doug wrote:
> Ok, got another hang in "siobi" state (this time after it
> successfully completed the script). Here is the trace:
>
> (gdb) file /usr/sbin/amd
> Reading symbols from /usr/sbin/amd...done.
> (gdb) attach 155
> Attaching to program: /usr/sbin/amd, process 155
> 0x8063dc4 in open ()
> (gdb) where
> #0 0x8063dc4 in open ()
> #1 0x806b5c3 in vsyslog (pri=6, fmt=0x809279a "%s", ap=0xbfbfb240 "X")
> at /usr/src/lib/libc/../libc/gen/syslog.c:262
> #2 0x806b2c2 in syslog (pri=6, fmt=0x809279a "%s")
> at /usr/src/lib/libc/../libc/gen/syslog.c:130
> #3 0x805a3d8 in real_plog (lvl=6,
> fmt=0x8091ea0 "recompute_portmap: NFS version %d", vargs=0xbfbfba7c
> "\002")
> at
> /usr/src/usr.sbin/amd/libamu/../../../contrib/amd/libamu/xutil.c:443
> #4 0x805a2be in plog (lvl=16,
> fmt=0x8091ea0 "recompute_portmap: NFS version %d")
> at
> /usr/src/usr.sbin/amd/libamu/../../../contrib/amd/libamu/xutil.c:383
So I started thinking that maybe the problem was actually in
syslog (or amd's interface to it). So I disabled the following two options
in my amd.conf file:
log_file = syslog:local7
log_options = all
And lo and behold, it worked like a charm. I was able to run my
conf-building script for my web server 20 times in a row with no ill
effects. Previously the best I could do was 3 times before it hung.
After confirming that it worked with no logging, I tried enabling
logging to a regular file, and that also worked like a charm. After
turning syslog style logging back on, it locked up cold, with a very
similar traceback.
If anyone wants to work on this, let me know.
Doug
--
On account of being a democracy and run by the people, we are the only
nation in the world that has to keep a government four years, no matter
what it does.
-- Will Rogers
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.05.9907131231470.16527-100000>