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IV63959: AIX NFS4CL CMD INCORRECTLY ALLOWS RPC TIMEOUT OF LESS THA 5 SEC 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

  • The lowest allowed RPC timeout on AIX NFS client (all NFS
    versions), is 5 seconds. This is a hardcoded lower limit.
    In the case of NFSv4, the nfs4cl command allows admins
    to incorrectly set values less than 5 seconds using the
    setfsoptions subcommand. A low value for timeouts, such
    as
    1 second, causes frequent RPC timeouts in cases where the
    NFS server is very busy and IO calls take longer than
    1 second.
    Problem does not happen when configuring the timeo option
    using mount command. This is an issue only when the
    "nfs4cl setfsoptions timeo=X" command is used.
    

Local fix

  • Do not set "timeo" option to less than 50 (5 seconds).
    

Problem summary

  • Frequent RPC Timeouts occur on the customr's system
    

Problem conclusion

  • In update_args(), add a check for upper and lower limit bounds
    for timeout values
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV70119
    6100-09 - use AIX APAR IV63920
    7100-02 - use AIX APAR IV60608
    7100-03 - use AIX APAR IV63959
    

APAR Information

  • APAR number

    IV63959

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-08-25

  • Closed date

    2014-08-25

  • Last modified date

    2015-09-30

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

    IV60608

  • 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 U865826

       UP15/05/19 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV63959

Modified date: 30 September 2015