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IZ80404: CHANGING THE MAX_XFER_SIZE MAY FAIL ON AN ACTIVE HDISK APPLIES TO AIX 6100-02

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

  • when an MPIO device has 2 paths and each is using a
    different adapter and the disk is currently part of
    A VG that is varied on, if one adapter is placed in a
    defined state and the max_xfer_sized increased, and
    cfgmgr run to bring the adapter and path back online,
    cfgmgr may failed to add the path back into the
    MPIO device.
    
    The error may look similar to this one:
    
    [root@lpa-testdhts05:/] # cfgmgr
    Method error (/etc/methods/cfgscsidisk -l hdisk4 ):
            0514-040 Error initializing a device into the
    kernel.
    

Local fix

  • change the max_xfer using the -P flag and reboot
    

Problem summary

  • The disk max_tranfer size is increased above the size mentioned
    in the ODM, when the disk is open. Adding path would fail.
    

Problem conclusion

  • The disk max_transfer size is not allowed to increase more
    than ODM's value, when the disk is open.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IZ80404

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2010-07-16

  • Closed date

    2010-07-16

  • Last modified date

    2013-03-28

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

    IZ77535

  • 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 U835872

       UP10/08/24 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
28 March 2013