Messages in this thread | | | Subject | 2.4.31 hangs, no information on console or serial port | From | David Golombek <> | Date | 21 Feb 2006 10:23:56 -0500 |
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I have a box running a modified Debian/woody system and 2.4.31. It is intermittently hanging such that:
* All logging to /var/log ceases. * Machine is still pingable. * Machine can be telneted to on time port, but no time is echoed. * After attaching a console+keyboard, console would not unblank. * Nothing responded when attaching a serial console. * Machine does not respond to Ctrl-Alt-Del * No DMI messages are logged. * Hang is persistent until physical reboot.
This has happened 4 times, on 2 separate machines (under roughly similar conditions). Machines are up variable amounts of time before crashing, between many weeks and less than 1 day. Nothing unusual is logged in /var/log/{deamon.log,kern.log,messages,syslog} prior the hang, except that /var/log/messages includes the "TCP: Treason uncloaked!" warnings that are fixed in 2.4.32. No users were logged on at the time of 3 of the 4 crashes, and no local user activity was present at the time of the 4th.
The machines are Intel P4's with 2GB of memory
The machine is under relatively high load and has a custom userspace nfs server running on it (which is potentially to blame, but we've been unable to determine how). The custom userspace nfs server and tomcat4 are the primary applications running.
Any suggestions as to how we might debug this or possible causes would be greatly appreciated.
Thanks, Dave
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