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IT16987: PROCESS/SESSION IS HUNG WAITING FOR AN OUTPUT VOLUME THAT IS IN USE.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Under the following circumstances a hang condition can occur
    when a process or session require a volume that is in use:
    1. A process or session requires access to a volume in order to
    change the volume from the current state to a new state, such
    as scratch, empty, filling, or readonly.
    2. During the state change another process or session has the
    volume in use as an output volume, and will not allow other
    sessions or process to have access to the volume.
    3. After the session or process using the volume completes, the
    volume is no longer usable, because the volume is being returned
    to scratch, or changed to full, or set to readonly.
    4. The process or session is hung with in a deadlock trying to
    recover from the situation while holding internal locks that
    cause all subsequent volume allocation to hang.
    When diagnosing the problem look for the following similar out
    put from the SHOW LOCKS command:
    
     LockDesc: Type=36002(as volume id), NameSpace=15568,
       SummMode=sLock, Key=''
       Holder: (asvolacq.c:2788 Thread 826091) Tsn=0:16656970,
                Mode=sLock
        Waiter: (asvolacq.c:9808 Thread 826091) Tsn=0:16656978,
                Mode=xLock
    
    Use SHOW THREADS/gstack/pstack to find the function on the
    stack of the hung thread that look similar to the following:
      pkWaitConditionTracked ()
      WaitForLock ()
      tmLockTracked ()
      AsLockVolIdTracked ()
      CheckForDelete()
      AsReleaseVol ()
      AsAcquireOutputVol ()
    .
    Initial Impact:
    Medium
    .
    Tivoli Storage Manager Versions Affected:
    Applies to all current 6.3 and 7.1 server versions.
    .
    Additional Keywords:
    Hang hung wait session process lock STA TSM
    

Local fix

  • Halt and restart the Spectrum Protect server to clear the
    deadlock.
    

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 6.3.6.100, 7.1.7.100, 7.1.8, *
    * and 8.1.1. Note that this is subject to change at the        *
    * discretion of IBM.                                           *
    ****************************************************************
    

Problem conclusion

  • This problem was fixed.
    Affected platforms:  AIX, HP-UX, Solaris, Linux, and Windows.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT16987

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    71L

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-09-18

  • Closed date

    2016-10-31

  • Last modified date

    2016-12-13

  • 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

  • R63A PSY

       UP

  • R63H PSY

       UP

  • R63L PSY

       UP

  • R63S PSY

       UP

  • R63W PSY

       UP

  • R71A PSY

       UP

  • R71H PSY

       UP

  • R71L PSY

       UP

  • R71S PSY

       UP

  • R71W PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 7.1.3

Reference #: IT16987

Modified date: 13 December 2016