Greetings;
This sort of begs the question, why does blogd need to be killed off?
As regards "consistently prevented," I predict, based upon my (mumble)
years of experience, that it will work "consistently" until sometime that
one or more of the following conditions are met:
- It is 2:00 AM Sunday morning
- You are on vacation
- You are on the other side of the country/continent/world
- You are completely unreachable
If blogd really *needs* to be killed off then it would be much better to
figure out a method of monitoring the process of the startup dynamically
and killing blogd when it is really not needed any more. Otherwise just
letting it run is probably the safest course.
Good Luck!
Dennis
"Hall, Ken (IDS
ECCS)" To: [EMAIL PROTECTED]
<[EMAIL PROTECTED] cc:
e.ml.com> Subject: Problem with SYSVINIT on SuSE
SLES7
Sent by: Linux
on 390 Port
<[EMAIL PROTECTED]
ARIST.EDU>
03/20/2003
08:23 AM
Please respond
to Linux on 390
Port
For a while we've been bothered by a problem on our SLES7 systems where
daemons don't start at boot time. We thought it was related to the
products themselves, but recently I noticed that it almost
always seemed to be the LAST daemon in the list that didn't start. I've
looked into it, and I think I've identified a race condition in
/etc/init.d/rc that accounts for this.
When the script runs, it logs it's messages to /var/log/boot.log via a
daemon called blogd. After the last script runs, rc sends QUIT to blogd to
shut it down. On a very fast machine (such as a
z900), it's possible that the last daemon hasn't completed logging messages
when this happens. The QUIT signal seems to propagate back to the starting
daemon as a SIGHUP, causing it to fail.
We had noticed that the problem seemed to occur most frequently on our
production systems, and not often on test. This is consistent since our
test system is somewhat slower, so would be less likely
to experience the problem.
The attached patch inserts a 2 second sleep before sending the kill signal.
I've tested it multiple times, and it has consistently prevented the last
daemon from failing.
-- rc~ Thu Mar 20 09:04:24 2003
+++ rc Thu Mar 20 09:04:00 2003
@@ -187,8 +187,9 @@
fi
#
-# Stop blogd if running
+# Stop blogd if running (wait 3 seconds for last guy to finish logging)
#
+sleep 2
killproc -QUIT /sbin/blogd
#
