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IV64209: SCIOLSTART FAILS WITH EIO VS ESTALE IF DUP TARGET_INFO FOUND APPLIES TO AIX 7100-02

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

  • An SCIOLSTART of a target port may fail with EIO error if
    there is already an existing target_info for that target.
    This can happen if an SCIOLSTART is issued from an NPIV
    client, after the target port has been moved to another
    physical SAN switch port.
    
    When the request to log in to the target port is received
    on the VIOS, only the scsi_id value is provided.  This
    scsi_id is the new location of the storage, versus the
    old, and gets treated as a new device.  During device
    initialization, the protocol driver discovers the storage
    WWPN, and now finds an existing entry in its device
    tables.
    
    This causes a duplicate target_info structure, so the
    SCIOLSTART is failed back to the vfchost adapter.
    However, the error returned is an EIO versus an ESTALE,
    so the EIO error is passed back up to the client,
    instead of the vfchost adapter initiating recovery.
    

Local fix

Problem summary

  • IOs from the VIO client fails with EIO after changing the
    storage port with no LUNs started from the port.
    

Problem conclusion

  • Code changed to avoid the issue.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV55341
    6100-09 - use AIX APAR IV59967
    6100-09 - use AIX APAR IV59967
    7100-02 - use AIX APAR IV64209
    7100-03 - use AIX APAR IV59963
    7100-04 - use AIX APAR IV60214
    

APAR Information

  • APAR number

    IV64209

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-08-29

  • Closed date

    2014-08-29

  • Last modified date

    2016-05-10

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

    IV55341

  • 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 U867211

       UP15/01/19 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV64209

Modified date: 10 May 2016