IBM Support

IV56402: FASTLO RETAINS STALE CONNECTIONS AFTER RG MIGRATION IN POWERHA APPLIES TO AIX 7100-03

A fix is available

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • In a PowerHA cluster after RG migration which includes
    NFS
    cross mount directory, several nodes of cluster can't
    access NFS directory.
    The mount point isn't reflected in ls command output.
    It gives the error,
    
    # ls -la /
    /nfsmnt not found
    
    This happens when tcp_fastlo network option is enabled
    

Local fix

  • Disable tcp_fastlo network option
    

Problem summary

  • Start tcp communication between two IP's in a machine with
    enabling tcp_fastlo. Now the communication will still happen
    even after removing the IP or routes to the destination.
    

Problem conclusion

  • Send data to destination IP only when the route & the interface
    status of the destination is UP. If no route found, then fastlo
    will check for alternate route to send the data otherwise
    fastlo will log an error trace message.
    

Temporary fix

Comments

  • 6100-09 - use AIX APAR IV56311
    6100-09 - use AIX APAR IV56311
    6100-09 - use AIX APAR IV56311
    7100-03 - use AIX APAR IV56402
    7100-04 - use AIX APAR IV56337
    

APAR Information

  • APAR number

    IV56402

  • Reported component name

    AIX V7.1

  • Reported component ID

    5765H4000

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-03-07

  • Closed date

    2014-03-07

  • Last modified date

    2016-05-10

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

    IV50504

  • 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 U866446

       UP14/05/22 I 1000



Document information

More support for: AIX Enterprise Edition

Software version: 710

Operating system(s): AIX

Reference #: IV56402

Modified date: 10 May 2016