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MustGather: AIX system crash problems

MustGather: AIX system crash problems

Collecting data for problems with system crash on AIX

The following procedures are for data collection, not for problem diagnosis. Gathering this information before calling IBM support can aid in problem determination and save time resolving Problem Management Records (PMRs).

Using zsnap for AIX system crash

Run # zsnap --DUMP

This zsnap command gathers data for a system hang or system crash, and then creates the testcase file in one step. If you already have a PMR number, see the example below.

  • -Data

    In addition to the information gathered by the snap command, the zsnap command gathers system crash data that include:

  • -Example

    See zsnap usage for all available options.

    # zsnap --DUMP --pmr 12345,123,123

    The example gathers the appropriate data and creates a testcase file with the IBM standard naming convention for quicker processing. You will be prompted to send the file to IBM using the FTP protocol. If you don't have a PMR number, omit the --pmr flag to build the testcase file.

    You can also run the zsnap command from the AIX SMIT menus.

    For information on sending testcase information, read Sending Testcases Electronically.

Using snap for AIX system crash

The snap command is the standard AIX tool that gathers data and stores that information in /tmp/ibmsupt/. The snap command does not gather the following additional information related to a system hang or system crash.

  • -Data

    To reduce the possibility of needing to request additional information later, the following information needs to be gathered manually and included in the snap testcase file.

    See zsnap Data section above for the information you need to collect.

  • - Sample snap procedure for system crash

    See snap usage for all available options

    Follow these steps to gather the DUMP data.

    1. Run the snap -r command to remove all previously gathered data.
    2. Gather the additional information and put it in /tmp/ibmsupt/testcase. You may need to recreate the testcase directory.
    3. Run # 3. snap -gfkDGLNc
    4. Rename the testcase file to adhere to IBM testcase file naming conventions, and then send the file to IBM.
    5. For information on sending testcase information, read Sending Testcases Electronically.

Document information

More support for: AIX family

Operating system(s): AIX

Reference #: ools281dbb32

Modified date: 22 June 2018

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