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IV53377: PROBLEMS SVC LUN LEADS TO LONG FAIL TIMES, POSSIBLE SSP 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

  • If an SVC LUN that is in use is unmapped, the AIX SCSI disk
    driver may take a long time (several minutes) for I/O to fail.
    This could lead to issues with applications or with shared
    storage pools, if they are expecting failures to happen more
    quickly.
    

Local fix

Problem summary

  • If an SVC LUN that is in use is unmapped, the AIX SCSI disk
    driver may take a long time (several minutes) for I/O to fail.
    This could lead to issues with applications or with shared
    storage pools, if they are expecting failures to happen more
    quickly.
    

Problem conclusion

  • Modified the PCM and SCSI disk driver to change the way that
    they handle the particular SCSI status that the SVC device
    returns when a LUN is unmapped on the SVC.
    

Temporary fix

Comments

  • 6100-07 - use AIX APAR IV58331
    6100-08 - use AIX APAR IV57950
    6100-09 - use AIX APAR IV53376
    6100-09 - use AIX APAR IV53376
    6100-09 - use AIX APAR IV53376
    7100-01 - use AIX APAR IV57667
    7100-02 - use AIX APAR IV56730
    7100-03 - use AIX APAR IV53377
    

APAR Information

  • APAR number

    IV53377

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2013-12-16

  • Closed date

    2013-12-16

  • Last modified date

    2014-08-14

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

    IV53376

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

    IV56730 U866395

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U866395

       UP14/05/22 I 1000



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV53377

Modified date: 14 August 2014