This topic describes how to create system dumps using the SAN File
System server that is running the Linux operating system.
You can use the Linux operating system process dump capabilities
to help with debugging and problem determination of the SAN File System.
In addition, you may need to force a core dump of the metadata server process
so that you can package the data and send it to IBM
® support personnel for review. Follow
these steps to force a core dump:
- Use the ulimit shell command to set the size of the
allowable core dump file size to be unlimited.
Note: You can use the ulimit shell
command with the –a parameter to verify the current allowable limit.
ulimit
–c unlimited
- Use the Linux kill command to terminate the metadata
server process:
kill –6 PID
where PID is the process
ID for the metadata server process.
Note: You will need to terminate all
SAN File System processes that are currently running. Typically, using the kill command
against the parent process will also terminate all child processes.
- The kill command produces a file called
core.PID in the directory where you started this process.
The metadata server runs in user space. Therefore, a problem
with the metadata server should not crash the Linux kernel. You should not
need to analyze kernel dumps on Linux for the metadata server.