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IV55386: SYSTEM MAY HANG WITH THREADS IN SECOW FUNCTION APPLIES TO AIX 6100-09

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

  • System may hang with at least one thread having
    the stacktrace ending with:
    [000E47F8]e_block_thread+000298 ()
    [000E5368]e_sleep_thread+0000E8 (??, ??, ??)
    [002B3070]seCOW+000690 (??, ??)
    
    The waited for nssd structure should have the
    flag word with valus 1 ( = SSD_FREE):
    (0)> j2ssd @r17 | grep flag
    flag........0x00000001
    
    There may be other threads also in seCOW, but they
    should all be waiting earlier in code:
    [000E47F8]e_block_thread+000298 ()
    [002B2F14]seCOW+000534 (??, ??)
    

Local fix

  • N/A
    

Problem summary

  • System slowly comes to a hang when using external snapshots.
    

Problem conclusion

  • change locking serialization.
    

Temporary fix

Comments

  • 6100-07 - use AIX APAR IV56161
    6100-08 - use AIX APAR IV54634
    6100-09 - use AIX APAR IV55386
    6100-09 - use AIX APAR IV55386
    6100-09 - use AIX APAR IV55386
    7100-01 - use AIX APAR IV57487
    7100-02 - use AIX APAR IV56226
    7100-03 - use AIX APAR IV55382
    7100-04 - use AIX APAR IV55457
    

APAR Information

  • APAR number

    IV55386

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-02-12

  • Closed date

    2014-02-12

  • Last modified date

    2016-05-10

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

    IV54634

  • 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 U859304

       UP14/05/21 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Standard Edition

Software version: 610

Operating system(s): AIX

Reference #: IV55386

Modified date: 10 May 2016