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IV17375: JFS2 FILESYSTEM HANG IN BMASSIGN APPLIES TO AIX 6100-07

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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 6100-07 Technology Level with
* bos.mp64 below the 6.1.7.16 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 IV17375.
****************************************************************

Problem conclusion

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

Temporary fix

  • *********
* HIPER *
*********

Comments

  • ž**** PE13/03/28 PTF IN ERROR. SEE APAR IV30905  FOR DESCRIPTION

APAR Information

  • APAR number

    IV17375

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Submitted date

    2012-03-15

  • Closed date

    2012-04-17

  • Last modified date

    2013-03-28

  • 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 610 STD EDI

  • Fixed component ID

    5765G6200

Applicable component levels

  • R610 PSY U850425

       UP12/07/16 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":"610","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":"610","Edition":"","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSAUMY","label":"IBM AIX Enterprise Edition"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"","label":""}},{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG11Q","label":"AIX 6.1 HIPERS, APARs and Fixes"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
28 March 2013

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