Package: syslog-ng
Severity: important
If you set "options { sync(X) }" to a value of X > 0, syslog-ng will
effectively lose X lines of logging. For instance, setting this to
10 will cause syslog-ng to buffer 10 lines of log output. On
shutdown, I'd expect it to write to lines to the logs, which it
*does not*! Thus, these 10 lines are effectively lost!
Check this out:
wall:~# for i in 10 100 200 400 800; do
echo "*** sync($i) ***"
sed -i -e "s,sync(.*),sync($i)," /etc/syslog-ng/syslog-ng.conf
/etc/init.d/syslog-ng start &> /dev/null
for j in `seq 0 $i`; do
logger $i/$j
done
sleep 5
/etc/init.d/syslog-ng stop &>/dev/null
tail -3 /var/log/syslog
done
*** sync(10) ***
Mar 14 08:13:44 wall root: 10/5
Mar 14 08:13:44 wall root: 10/6
Mar 14 08:13:44 wall root: 10/7
*** sync(100) ***
Mar 14 08:13:50 wall root: 100/92
Mar 14 08:13:50 wall root: 100/93
Mar 14 08:13:50 wall root: 100/94
*** sync(200) ***
Mar 14 08:13:55 wall root: 200/192
Mar 14 08:13:55 wall root: 200/193
Mar 14 08:13:55 wall root: 200/194
*** sync(400) ***
Mar 14 08:14:01 wall root: 400/392
Mar 14 08:14:01 wall root: 400/393
Mar 14 08:14:01 wall root: 400/394
*** sync(800) ***
Mar 14 08:14:08 wall root: 800/792
Mar 14 08:14:08 wall root: 800/793
Mar 14 08:14:08 wall root: 800/794
I cannot really figure out an equation for the number of lines lost,
but you can see that the last few go to neverneverland.
-- System Information:
Debian Release: testing/unstable
APT prefers stable
APT policy: (700, 'stable'), (600, 'testing'), (98, 'unstable'), (1,
'experimental')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-1-686
Locale: LANG=en_GB, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
--
.''`. martin f. krafft <[EMAIL PROTECTED]>
: :' : proud Debian developer and author: http://debiansystem.info
`. `'`
`- Debian - when you have better things to do than fixing a system
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god is dead.
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nietzsche is dead.
-- god
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