IJ22788: LOG RECOVERY FAILURE PREVENTS FS MOUNT OR MMFSCK

APAR status

• Closed as program error.

Error description

• The file system fails to mount, and the mmfs.log.latest
  on the file system manager node has an error related to
  "Log recovery failed".
  
  Often this kind of error results from one or more NSDs
  being offline, and the solution is to restart those
  disks.
  
  Failing that, this kind of error can still usually be
  worked around with a mmfsck command, but due to an error
  in the way this bad log is handled, the mmfsck cannot
  continue either. The mmfsck command also complains of
  the log recovery failure.
  
  In this state, the file system cannot be mounted, even
  in read-only mode. Neither can the log be repaired in
  order for recovery to continue.
  

Local fix

Problem summary

• Disk problem could cause newly created log files
  to become inconsistent and this in turn could
  cause file system panic during log recovery. All
  attempt to mount the file system will fail when
  this occurs.
  

Problem conclusion

• Better handle inconsistent log file that contain
  no valid log data and prevent file system will
  fail when this occurs.
  

Temporary fix

Comments

APAR Information

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

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

  IJ24115

Fix information

• Fixed component name

  SPEC SCALE DME

• Fixed component ID

  5737F34AP

Applicable component levels