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IV54476: J2 FILESYSTEM GETS CORRUPTED AFTER ROLLBACK OF EXTERNAL SNAPSHOT APPLIES TO AIX 6100-09

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Rollback of external snapshot on large J2
    filesystem(larger than 8TB or 8192GB)
    results in corrupted filesystem
    
    After the Rollback attempting to mount the filesystem
    gives error:
    
    test:/# mount /my_large_fs
    Replaying log for /dev/test_vmax_lv.
    mount: 0506-324 Cannot mount /dev/test_vmax_lv on
    /my_large_fs.
    The media is not formatted or the format is not correct.
    
    fsck on the filesystem will give the following error:
    
    test:/# fsck /dev/test_vmax_lv
    
    The current volume is: /dev/test_vmax_lv
    fsck: 0507-020 Invalid magic number in the primary
    superblock.
    fsck: 0507-013 Invalid magic number in the secondary
    superblock.
    Primary superblock is corrupt.
    Secondary superblock is corrupt.
    fsck: 0507-018 Superblock is corrupt and cannot be
    repaired.
          Both primary and secondary copies are corrupt.
    Cannot continue
    

Local fix

Problem summary

  • Rollback of external snapshot on large J2 filesystem(larger
    than 8TB or 8192GB) results in corrupted filesystem.
    

Problem conclusion

  • corrected the code to aviod filesystem corruption.
    

Temporary fix

Comments

  • 6100-07 - use AIX APAR IV58377
    6100-08 - use AIX APAR IV58041
    6100-09 - use AIX APAR IV54476
    6100-09 - use AIX APAR IV54476
    6100-09 - use AIX APAR IV54476
    7100-01 - use AIX APAR IV53482
    7100-02 - use AIX APAR IV57152
    7100-03 - use AIX APAR IV54561
    7100-04 - use AIX APAR IV54541
    

APAR Information

  • APAR number

    IV54476

  • Reported component name

    AIX 610 STD EDI

  • Reported component ID

    5765G6200

  • Reported release

    610

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Submitted date

    2014-01-23

  • Closed date

    2014-01-23

  • Last modified date

    2016-05-10

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

    IV53482

  • 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 U861301

       UP14/10/28 I 1000

PTF to Fileset Mapping



Document information

More support for: AIX Standard Edition

Software version: 610

Operating system(s): AIX

Reference #: IV54476

Modified date: 10 May 2016