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IZ63939: MULTIBOS LOOSES FS/LV FROM VARIED OFF VGS APPLIES TO AIX 5300-09

A fix is available

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APAR status

  • Closed as program error.

Error description

  • multibos -V varies on volume groups so it can verify they
    are valid. The volume groups are varied back off and the
    filesystems remain in /etc/filesystems.
    
    If the varyonvg fails the logical volumes with that
    volume group are removed.
    A standby volume group on a standby HACMP client will
    fall into this category.
    
    In an HACMP Cluster on a Volume Group that is varied on
    as concurrent Active/Passive, the Passive node will show
    the volume group as not varied on, multibos will do a
    varyonvg on the volume group, knocking out the
    Active node.
    This can show up as Reservation Conflicts.
    
    In a non-HACMP environment with concurrent volume groups
    when multibos does the varyonvg it will block out all the
    other nodes placing locks on the volume group.
    

Local fix

Problem summary

  • The mbverify function of multibos -V option during boot clears
    out defunct stanzas in /etc/filesystems. For filesystems on
    varied off volume groups the volume groups are varied on and
    their filesystems checked against /etc/filesystems. If a system
    is part of High Availability setup and contains concurrent
    volume groups the act of varying on and off may affect the
    HA UP status.
    

Problem conclusion

  • This change checks for concurrent volume groups on a system and
    if found will not setup the mbverify multibos -V call in
    /etc/inittab.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IZ63939

  • Reported component name

    AIX 5.3

  • Reported component ID

    5765G0300

  • Reported release

    530

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2009-10-27

  • Closed date

    2010-03-30

  • Last modified date

    2013-03-28

Fix information

  • Fixed component name

    AIX 5.3

  • Fixed component ID

    5765G0300

Applicable component levels

  • R530 PSY U837756

       UP10/09/21 I 1000

PTF to Fileset Mapping

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Document Information

Modified date:
28 March 2013