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IV51478: FILESYSTEM HANG WHILE RECOVERING FROM DEGRADED MODE APPLIES TO AIX 7100-03

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

  • This is a rare situation and does not happen during a
    regular Filesystem operation. The Filesystem was put into
    degraded mode. Next time when sync runs it will try to
    recover the Filesystem
    
    This thread is the owner of the lock and waiting for same
    lock while holding it.
    
    (0)> f 74
    pvthread+004A00 STACK:
    [00572DD4]complex_lock_sleep_ppc+0001D4
    (00000000000E46B8, 8000000000001032,
       0000000082004224, F000000030080340 [??])
    [00574D40]lock_write_ppc+0001A0 (??)
    [002D7AF8]recoverFS+0004D8 (??) <== Here we are waiting
    for i_rdwrlock
    [002D7E60]iRecoverAll+0000E0 () <=== has the J2_LOCK
    which all other threads are waiting for
    [002D94D0]j2_syncvfs@AF50_13+0001B0 (??, ??, ??, ??, ??)
    [005CD8E4]vfs_syncvfs+000044 (??, ??, ??, ??)
    [0069CD24]syncvfs+000244 (??, ??)
    [00003888]mfspurr_sc_flih01+0000E4 ()
    [kdb_get_virtual_memory] no real storage @ 20081AC8
    [100006D0]100006D0 ()
    [kdb_read_mem] no real storage @ FFFFFFFFFFF9090
    

Local fix

Problem summary

  • This is a rare situation and does not happen during a
    regular Filesystem operation. The Filesystem was put into
    degraded mode. Next time when sync runs it will try to
    recover the Filesystem. This thread is the owner of the lock
    and waiting for same lock while holding it.
    

Problem conclusion

  • Ensure proper handling of ipmnt->i_iplog lock/unlock
    sequence.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV50714
    6100-09 - use AIX APAR IV51903
    6100-09 - use AIX APAR IV51903
    6100-09 - use AIX APAR IV51903
    7100-02 - use AIX APAR IV56927
    7100-03 - use AIX APAR IV51478
    

APAR Information

  • APAR number

    IV51478

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2013-10-30

  • Closed date

    2013-10-30

  • Last modified date

    2014-08-14

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

    IV50714

  • 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 U858978

       UP14/05/22 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV51478

Modified date: 14 August 2014