Service Manual

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Enabling Application Core Dumps
Application core dumps are disabled by default.
A core dump le can be very large. Due to memory requirements the le can only be sent directly to an FTP server; it is not stored on
the local ash.
To enable full application core dumps, use the following command.
• Enable RPM core dumps and specify the Shutdown mode.
CONFIGURATION mode
logging coredump server
To undo this command, use the no logging coredump server command.
Mini Core Dumps
Dell Networking OS supports mini core dumps on the application and kernel crashes. The mini core dump applies to Master, Standby,
and Member units.
Application and kernel mini core dumps are always enabled. The mini core dumps contain the stack space and some other minimal
information that you can use to debug a crash. These les are small les and are written into ash until space is exhausted. When the
ash is full, the write process is stopped.
A mini core dump contains critical information in the event of a crash. Mini core dump les are located in ash:/ (root dir). The
application mini core lename format is f10StkUnit<Stack_unit_no>.<Application name>.acore.mini.txt. The kernel mini core lename
format is f10StkUnit<Stack_unit_no>.kcore.mini.txt. The following are sample lenames.
When a member or standby unit crashes, the mini core le gets uploaded to master unit. When the master unit crashes, the mini
core le is uploaded to new master.
The panic string contains key information regarding the crash. Several panic string types exist, and they are displayed in regular
English text to enable easier understanding of the crash cause.
Example of Application Mini Core Dump Listings
Dell#dir
Directory of flash:
1 drw- 16384 Jan 01 1980 00:00:00 +00:00 .
2 drwx 1536 Sep 03 2009 16:51:02 +00:00 ..
3 drw- 512 Aug 07 2009 13:05:58 +00:00 TRACE_LOG_DIR
4 d--- 512 Aug 07 2009 13:06:00 +00:00 ADMIN_DIR
5 -rw- 8693 Sep 03 2009 16:50:56 +00:00 startup-config
6 -rw- 8693 Sep 03 2009 16:44:22 +00:00 startup-config.bak
7 -rw- 156 Aug 28 2009 16:16:10 +00:00 f10StkUnit0.mrtm.acore.mini.txt
8 -rw- 156 Aug 28 2009 17:17:24 +00:00 f10StkUnit0.vrrp.acore.mini.txt
9 -rw- 156 Aug 28 2009 18:25:18 +00:00 f10StkUnit0.sysd.acore.mini.txt
10 -rw- 156 Aug 28 2009 19:07:36 +00:00 f10StkUnit0.frrp.acore.mini.txt
11 -rw- 156 Aug 31 2009 16:18:50 +00:00 f10StkUnit2.sysd.acore.mini.txt
12 -rw- 156 Aug 29 2009 14:28:34 +00:00 f10StkUnit0.ipm1.acore.mini.txt
13 -rw- 156 Aug 31 2009 16:14:56 +00:00 f10StkUnit0.acl.acore.mini.txt
flash: 3104256 bytes total (2959872 bytes free)
Dell#
Example of a Mini Core Text File
VALID MAGIC
-----------------PANIC STRING -----------------
panic string is :<null>
904
S-Series Debugging and Diagnostics