IBM Support

IT29996: SHOW THREADS CRASHES AIX SERVER RUNNING SPECTRUM PROTECT 8.1.8.0 OR NEWER.

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APAR status

  • Closed as program error.

Error description

  • AIX server running IBM Spectrum Protect 8.1.8.0 or newer can
    crash when the command SHOW THREADS is issued.
    This problem is especially noticeable when gathering data with
    servermon, either through the script servermon.pl or the always
    on servermon.
    A server crash can happen if the SHOW THREADS command is issued
    while the server is performing tasks such as writing to a cloud
    container pool, OC operations, client deployment, etc.
    
    Spectrum Protect Versions Affected:
    8.1.8.0 or newer on AIX servers.
    
    Customer/Support Diagnostics (If Applicable):
    Call stack from dbx will look similar to the following:
    
    (dbx) where
    pthread_kill(??, ??) at 0x900000000583f94
    _p_raise(??) at 0x9000000005837e4
    raise.raise(??) at 0x900000000039b68
    abort() at 0x900000000056564
    masterSynchSignalHandler() at 0x9000000096885c4
    pkShowCallChain(??, ??, ??, ??) at 0x1005ec340
    PsShowThreads(??, ??, ??) at 0x100018e74
    IPRA.$DumpInfo(??, ??, ??, ??) at 0x100015af8
    IPRA.$DumpInfo(??, ??, ??, ??) at 0x10001582c
    IPRA.$DumpInfo(??, ??, ??, ??) at 0x10001582c
    PkShowThreads(??) at 0x100014ebc
    ShowCommand@AF10_8(??, ??, ??) at 0x100fdeb78
    psCommand(??, ??, ??) at 0x100fde50c
    AdmShow(??) at 0x10132c454
    AdmCommandLocal(??, ??, ??, ??, ??) at 0x1008da688
    admCommand(??, ??, ??, ??, ??) at 0x1008d7aec
    RunCommand(??, ??) at 0x1013fbe64
    ServerMonTenMinThread(??) at 0x1013f6f74
    StartThread(0x0) at 0x100010644
    
    Also, reviewing the actlog will show that SHOW THREADS is the
    last command or message being issued before the crash happens.
    
    
    Initial Impact:: High
    
    Additional Keywords:
    Tivoli Storage Manager TSM IBM SP abend core coredump dump
    

Local fix

  • Do not run SHOW THREADS command anywhere, including:
    1. Manually running the command.
    2. In the servermon.pl script. Disable SHOW THREADS before
    running this script. If SHOW THREADS is needed to diagnose
    another server problem, discuss with the support engineer on the
    best action plan.
    3. Always-on servermon function. Disable the always-on servermon
    by running this command:
    setopt alwaysonservermon no
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All IBM Spectrum Protect server users.                       *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See error description.                                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply fixing level when available. This problem is currently *
    * projected to be fixed in levels 8.1.8.100 and 8.1.9. Note    *
    * that this is subject to change at the discretion of IBM.     *
    ****************************************************************
    

Problem conclusion

  • This problem was fixed.
    Affected platforms for reported release:  AIX.
    Platforms fixed:  AIX.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT29996

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    81A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-08-22

  • Closed date

    2019-09-10

  • Last modified date

    2019-09-10

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    TSM SERVER

  • Fixed component ID

    5698ISMSV

Applicable component levels

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSGSG7","label":"Tivoli Storage Manager"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"81A","Edition":"","Line of Business":{"code":"LOB26","label":"Storage"}}]

Document Information

Modified date:
10 September 2019