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IV64421: INCORRECT MOUNT GUARD ERROR ON REMOUNT OF CORRUPT JFS2 FS APPLIES TO AIX 6100-08

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

  • If we have the following conditions:
    1) JFS2 filesystem has mount guard turned on
    2) JFS2 filesystem has been corrupted in some way
    3) JFS2 filesystem has been cleanly unmounted
    
    On a remount attempt you will get the following error
    message indication
    filesystem may still be mounted:
    
    Cannot mount guarded filesystem.
    The filesystem is potentially mounted on another node.
    
    This should not be outputted since the filesystem has
    been cleanly  unmounted
    and is not mounted on another node.
    
    Instead an error message concerning the fact there is FS
    corruption
    and fsck needs to be run should be outputted.
    
    This has been confusing analysis of root cause in HACMP
    problems
    and flash copy problems.
    

Local fix

  • Only workaround is to turn mount guard off which is not
    recommended.
    

Problem summary

  • On attempting to remount a corrupted filesystem after a clean
    unmount, an incorrect error message implying that the
    filesystem is still mounted is displayed if the filesystem has
    "mount guard" turned on.
    

Problem conclusion

  • After successful unmount, complete cleanup operations in all
    cases.
    

Temporary fix

Comments

  • 6100-08 - use AIX APAR IV64421
    6100-09 - use AIX APAR IV59662
    6100-09 - use AIX APAR IV59662
    7100-02 - use AIX APAR IV64240
    7100-03 - use AIX APAR IV59194
    7100-03 - use AIX APAR IV59194
    7100-04 - use AIX APAR IV59822
    

APAR Information

  • APAR number

    IV64421

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-09-02

  • Closed date

    2014-09-02

  • Last modified date

    2016-05-10

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

    IV59194

  • 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 U867355

       UP15/01/18 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Standard Edition

Software version: 610

Operating system(s): AIX

Reference #: IV64421

Modified date: 10 May 2016