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IT23058: FILE DEVCLASS DEFINE VOLUME LINUX PERFORMANCE ON NFS STORAGE

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APAR status

  • Closed as program error.

Error description

  • During the Define Volume process, the creation of a File volume
    on a Linux system, using NFS storage, can take longer then
    expected.  In the reported case, volume creation took over 8
    hours to define.
    
    IBM Spectrum Protect Versions Affected: 7.1, 8.1 on Linux
    
    Customer/L2 Diagnostics
    Servermon data will show long running Define Volume threads.
    
    Example:
    Thread x, Parent y: psFormatVolumeThread, Storage 1048576,
    AllocCnt 1 HighWaterAmt 1048576
     tid=140731545540352, ptid=140731550811904, det=1, zomb=0,
    join=0, result=0, sess=0, procToken=11, sessToken=519
     lwp=26424
     Thread context:
       COMMMETHOD: Tcp/Ip
       COMMAND: DEFINE VOLUME
       THREAD_TYPE: PROCESS
       PROCESS_DESC: DEFINE VOLUME
       PROCESS_NUMBER: 11
       SESSION_TYPE: ADMIN
       ADMIN_NAME: z
    
    pstack:
    Thread x (Thread 0x7f51d9162700 (LWP 26424)):
    #0  0x000000360b2da1c3 in pwrite64 () from /lib64/libc.so.6
    #1  0x000000360b2df756 in internal_fallocate () from
    /lib64/libc.so.6
    #2  0x000000000168d280 in formatExtent ()
    #3  0x000000000168cfde in linuxDoFormatFile ()
    #4  0x000000000168c715 in psFormatVolumeThread ()
    #5  0x000000000165700d in StartThread ()
    #6  0x000000360b607aa1 in start_thread () from
    /lib64/libpthread.so.0
    #7  0x000000360b2e8bcd in clone () from /lib64/libc.so.6
    
    Initial Impact: Low
    Additional Keywords:  DIRECTIO posix_fallocate
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All IBM Tivoli Storage Manager and 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 7.1.9 and 8.1.5. Note that   *
    * this is subject to change at the discretion of IBM.          *
    ****************************************************************
    

Problem conclusion

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

Temporary fix

Comments

APAR Information

  • APAR number

    IT23058

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    81L

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-11-06

  • Closed date

    2017-11-10

  • Last modified date

    2017-11-10

  • 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

  • R71A PSY

       UP

  • R71H PSY

       UP

  • R71L PSY

       UP

  • R71S PSY

       UP

  • R71W PSY

       UP

  • R81A PSY

       UP

  • R81L PSY

       UP

  • R81W PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 81L

Reference #: IT23058

Modified date: 10 November 2017