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IV17924: JFS2 FILESYSTEM HANG IN BMASSIGN APPLIES TO AIX 7100-00

A fix is available

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • On AIX 6.1 TL5 and later TLs a JFS2 filesystem may hang,
    causing all commands accessing that filesystem to hang
    and to be unkillable.  The only way to recover is to
    reboot the system.
    
    The dump will show a thread waiting in bmAssign:
    [000D50D0]e_block_thread+000290 ()
    [000D5D28]e_sleep_thread+0000E8 (??, ??, ??)
    [00260B38]bmAssign+000778 (??, ??, ??, ??, ??, ??)
    [0025FDFC]bmRead+00009C (??, ??, ??, ??, ??, ??)
    [002B363C]xtTruncate+0009DC (??, ??, ??, ??, ??)
    [00299FDC]txLog+00029C (??, ??, ??)
    [0029C3D4]txCommit+000654 (??, ??, ??, ??)
    [002D3C58]j2_remove+000438 (??, ??, ??, ??)
    [005838A4]vnop_remove+0003E4 (??, ??, ??, ??)
    [0067B9C0]kunlink+000300 (??, ??)
    and other threads waiting for locks held by that thread
    or waiting in bmFlushRead for the same pager buffer.
    

Local fix

  • Reboot the system.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:
    * Systems running the 7100-00 Technology Level with
    * bos.mp64 below the 7.1.0.20 level.
    ****************************************************************
    * PROBLEM DESCRIPTION:
    * A JFS2 filesystem may hang, causing all commands accessing
    * that filesystem to hang and to be unkillable.  The only way
    * to recover is to reboot the system.
    * The dump will show a thread waiting in bmAssign:
    *
    * pvthread+0B6E00 STACK:
    *  000D3870 e_block_thread+000290 ()
    *  000D44C8 e_sleep_thread+0000E8 (??, ??, ??)
    *  0023D258 bmAssign+000778 (??, ??, ??, ??, ??, ??)
    *  0023C51C bmRead+00009C (??, ??, ??, ??, ??, ??)
    *  00289F8C xtFreeMap+00018C (??, ??, ??)
    *  00275094 txUpdateMap+000254 (??, ??)
    *  00278258 txCommit+0006D8 (??, ??, ??, ??)
    *  002AF178 j2_remove+000438 (??, ??, ??, ??)
    *  0057C0A4 vnop_remove+0003E4 (??, ??, ??, ??)
    *  00672580 kunlink+000300 (??, ??)
    *  00003850 ovlya_addr_sc_flih_main+000130 ()
    *  kdb_get_virtual_memory  no real storage @ 700000000596440
    *  1000624B4 00000001000624B4 ()
    ****************************************************************
    * RECOMMENDATION:
    * Install APAR IV17924.
    ****************************************************************
    

Problem conclusion

  • Track buffer RDONLY users via separate data field and manage
    accordingly
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

  • 6100-06 - use AIX APAR IV17291
    7100-00 - use AIX APAR IV17924
    

APAR Information

  • APAR number

    IV17924

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Submitted date

    2012-03-20

  • Closed date

    2012-04-17

  • Last modified date

    2013-03-27

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

    IV16158

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

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U851685

       UP12/08/09 I 1000

PTF to Fileset Mapping

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSMV87","label":"AIX 6.1 Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSMVAX","label":"AIX Express Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11R","label":"AIX 7.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
27 March 2013