[ts-7000] Intermittent hang on reboot for TS-5500

[Mike Magee <>]

We have a product in several areas that we are finding crash only once 
in a great while during a reboot.  In certain instances a reboot is 
requested every 27 minutes, and in this example that was the case for 
the entire run of 13 days.  About 1% of the time the reboot will not 
finish and none of our software runs for days at a time:

Here are some entries from /var/log/wtmp using last:

reboot  system boot  2.4.23-2.5-ts  Mon Oct  6 17:50   (00:27)
reboot  system boot  2.4.23-2.5-ts  Mon Oct  6 17:20   (00:27)
reboot  system boot  2.4.23-2.5-ts  Mon Oct  6 16:50   (00:27)
reboot  system boot  2.4.23-2.5-ts  Fri Oct  3 12:31  (3+04:46)
reboot  system boot  2.4.23-2.5-ts  Fri Oct  3 12:01   (00:27)
reboot  system boot  2.4.23-2.5-ts  Fri Oct  3 11:31   (00:27)
reboot  system boot  2.4.23-2.5-ts  Fri Oct  3 11:01   (00:27)

and further up...

reboot  system boot  2.4.23-2.5-ts  Thu Oct 16 02:40   (00:27)
reboot  system boot  2.4.23-2.5-ts  Thu Oct 16 02:10   (00:27)
reboot  system boot  2.4.23-2.5-ts  Thu Oct 16 01:40   (00:27)
reboot  system boot  2.4.23-2.5-ts  Fri Oct 10 07:12  (5+18:54)
reboot  system boot  2.4.23-2.5-ts  Fri Oct 10 06:42   (00:27)
reboot  system boot  2.4.23-2.5-ts  Fri Oct 10 06:12   (00:27)
reboot  system boot  2.4.23-2.5-ts  Fri Oct 10 05:42   (00:27)

We have no idea what is causing the hang, all we know is that our 
processes (located at the end /etc/init.tab) are never being executed. 
We also have no idea what is causing the unit to recover from the hang 
several days after it starts.

Has anyone ever experienced this problem, or can suggest ways of 
figuring out a way to diagnose an intermittent problem such as this?

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