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IV50830: SVGS USE ONLY 254 MWC RECORDS INSTEAD OF 510 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

  • Scalable Volume Groups use 254 MWC records instead of 510
    during writes.
    

Local fix

Problem summary

  • SVGs are only using 254 mwc rec entries instead of the
    potential 510 that we allocate space for.  The affect of this
    is that for active MWC LVs, you can essentially only be writing
    to 254 LTGs at once instead of 510.  This could be limiting
    performance capabilities with some workloads.
    

Problem conclusion

  • Correct mwc rec size definitions to properly use all 510
    slots.
    

Temporary fix

Comments

  • 5300-12 - use AIX APAR IV53135
    6100-07 - use AIX APAR IV58301
    6100-08 - use AIX APAR IV57885
    6100-09 - use AIX APAR IV50542
    6100-09 - use AIX APAR IV50542
    6100-09 - use AIX APAR IV50542
    7100-01 - use AIX APAR IV57583
    7100-02 - use AIX APAR IV49870
    7100-03 - use AIX APAR IV50830
    

APAR Information

  • APAR number

    IV50830

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2013-10-15

  • Closed date

    2013-10-15

  • Last modified date

    2014-08-14

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

    IV49870

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

    U866400

Fix information

  • Fixed component name

    AIX V7.1

  • Fixed component ID

    5765H4000

Applicable component levels

  • R710 PSY U866400

       UP14/05/22 I 1000



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV50830

Modified date: 14 August 2014