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Old 08-15-2005, 04:55 PM   #1
AZDAVE
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mandrake 10.2 system crashing @4:10 am on Sundays.


My Linux 10.2 Mandrake system is crashing every Sunday around 4:05-4:10 am. Not sure why as the logs are not complaining about any issues that I can see. Here is my syslog where it dies. Not sure what the ^@ symbols are but...


Aug 14 04:08:10 www kernel: DROPPED IN=eth0 OUT= MAC=00:c0:9f:3f:10:7c:00:06:52:99:24:06:08:00 SRC=10.1.68.31 DST=xx.xx.xx.xx1 LEN=84 TOS=0x00 PREC=0x00 TTL=30 ID=39192 PROTO=ICMP TYPE=8 CODE=0 ID=512 SEQ=44042
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@
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^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@
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^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ ^@^@^@^@^@^@^@^@^@^@Aug 1
4 06:48:38 www syslogd 1.4.1: restart.
Aug 14 06:48:38 www kernel: klogd 1.4.1, log source = /proc/kmsg started.
Aug 14 06:48:38 www kernel: Inspecting /boot/System.map-2.6.11-6mdksmp
Aug 14 06:48:38 www kernel: Loaded 20402 symbols from /boot/System.map-2.6.11-6mdksmp.
Aug 14 06:48:38 www kernel: Symbols match kernel version 2.6.11.
Aug 14 06:48:38 www kernel: No module symbols loaded - kernel modules not enabled.
Aug 14 06:48:38 www kernel: Linux version 2.6.11-6mdksmp (gb@n2.mandrakesoft.com) (gcc version 3.4.3 (Mandrakelinux 10.2 3.4.
syslog lines 69-81/72236 0%

This is all, I got. There are some scripts that run about the time it seems to crash. Here are the scripts that run around the time of the crash.

makewhatis.cron*
makewhatis-en.cron*
slocate.cron
I am running a full tape system backup as well at 03:00 am. System doesnt seem bogged down nor do I get any fatal errors. Note that I have to restart the server as nothing is responding. ANybody know of any issues with tar and these weekly cron jobs? I am getting a bit worried that my linux box may have picked up a worm or something? ANy ideas?

Thanks !
 
Old 08-15-2005, 06:38 PM   #2
tkedwards
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So you're running a tape backup at 3am? How long does that take? would it still be running at 4:10am?

Try commenting out the weekly stuff in /etc/crontab, ie:
Code:
#22 4 * * 0 root nice -n 19 run-parts /etc/cron.weekly
Does that stop the problem?
 
Old 08-16-2005, 09:03 AM   #3
AZDAVE
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Thanks.. The backup is still running when the scheduled cron jobs are running. I don't know why all of a sudden the Tar
backup would cause this..Other then the possibility that the slocate.sh job is running. I think this deletes the entire LOCATE database and
recreates it. The tar backup job might not like the fact that other processes are running?
I did stop the tar backup to run so it will be a good test to see what happens. I also had a corrupted
filesystem. I fixed the errors so that may have had something to do with it. Its just that nothing is getting logged in the kernel logs or syslog that
would tell me whats going on? is there any utility I can run to trace the I/O and see what is going on during the 04:00 am timeframe this happens?
I shall wait and see..
 
Old 08-16-2005, 06:10 PM   #4
tkedwards
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Quote:
The tar backup job might not like the fact that other processes are running?
Possibly - especially if its the slocate update process since that involves a lot of disk I/O at the same time your tar backup wants to pull through a lot of disk I/O. Still the system shouldn't crash - maybe just get really slow.

Quote:
I fixed the errors so that may have had something to do with it
This might have been the reason for the crashing.
 
  


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