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IT17123: TIVOLI STORAGE MANAGER CLIENT'S JOURNALING BACKUPS CAUSE FILESYSTEM LOCK CONDITION

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Journaling backup operation in Tivoli Storage Manager Client may
    lead to a filesystem lock condition on UNIX  systems. As result
     no read and write operations are possible on the filesystem.
    
    
    Customer/L2 Diagnostics: A reboot or a forced dismount of the
    filesystem generate a dump file. The stack in AIX looks like:
    
    pvthread+0AC000 STACK:
    [000F2298]e_block_thread+000298 ()
    [000F2D68]e_sleep_thread+000048 (??, ??, ??)
    [00014F50].kernel_add_gate_cstack+000030 ()
    [F1000000C0403AB4]filepath:PF_SemDown+000094 (F1000A01553EF018,
    ..
    [F1000000C0408D18]filepath:audit_add+0001DC (F1000A015585F070,
    ..
    [F1000000C040A75C]filepath:doLogAction+0001E8 (F1000A015585F008,
    ..
    [F1000000C0409FF8]filepath:doAction+00051C (0000000B0000000B, ..
    [F1000000C040BFA8]filepath:doDefferedActions+0001A8
    (F1000A01C1A33008, .
    [F1000000C04252F8]filepath:fpr_Cleanup+0000D0
    (F00000002FF46E68,..
    [F1000000C04255CC]filepath:fpr_ClosePost+000050
    (F00000002FF46E68, ..
    [F1000000C0427F2C]filepath:hook_close_prim+000278
    (F1000A08C377D020, ..
    [F1000000C042B878]filepath:hook_close+000030 (F1000A08C377D020,
    ..
    
    This issue is  caused by filepath's audit log buffer being full
    as consequence filepath suspends file system I/Os from
    completing. This can happen if the journaling daemon that
    periodically empties the buffer doesn't run fast enough for the
    amount of I/O the system is experiencing.
    
    Tivoli Storage Manager Versions Affected: All Tivoli Storage
    Manager Client v7.1 on UNIX platforms
    
    Initial Impact: Medium
    
    Additional Keywords: Filepath I/O core dump journal jbb
    

Local fix

  • Disable Journal backup operation on the filesystem.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All Tivoli Storage Manager clients 6.3.x, 6.4.x, 7.1.0,      *
    * 7.1.1, 7.1.2, 7.1.3, 7.1.4, 7.1.6  and 8.1.0 running on AIX  *
    * platform                                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See ERROR DESCRIPTION.                                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * This issue is projected to be fixed in the IBM Spectrum      *
    * Protect Client  versions 7.1.6.5, 8.1.0.2 and  8.1.2 on AIX  *
    * platform.                                                    *
    ****************************************************************
    

Problem conclusion

  • A new option FilepathBlockIO was added. This option can be used
    to block I/O (default behaviour) or not to block I/O and reset
    journal.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT17123

  • Reported component name

    TSM CLIENT

  • Reported component ID

    5698ISMCL

  • Reported release

    71A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-09-20

  • Closed date

    2017-02-13

  • Last modified date

    2017-02-13

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

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

Modules/Macros

  • tsmjbbd
    

Fix information

  • Fixed component name

    TSM CLIENT

  • Fixed component ID

    5698ISMCL

Applicable component levels

  • R71A PSY

       UP

  • R81A PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 71A

Reference #: IT17123

Modified date: 13 February 2017