IJ29002: MMVDISK EXCEPTION WHEN ADDING VIDISK SETS TO A FILE SYSTEM

APAR status

• Closed as program error.

Error description

• If the default replication (-m or -r) setting for a
  filesystem is set to 1, and mmvdisk is used to add an
  additional vdisk set to the file system, an exception
  will
  be hit if the --failure-groups option is not used.
  

Local fix

• In some cases, using the --failure-groups
  option avoids this issue.
  

Problem summary

• If the default replication (-m or -r)
  setting for a filesystem is set to 1,
  and mmvdisk is used to add an
  additional vdisk set to the file system,
  an exception will be hit if the
  --failure-groups option is not used.
  

Problem conclusion

• Benefits of the solution:
  Allows adding additional vdisk sets to
  the filesystem with no replication.
  Work Around:
  In some cases, using the --failure-groups
  option avoids this issue.
  Problem trigger:
  File systems using vdisk based
  NSDs which have either data
  or metadtaa replication set to 1.
  Symptom: Error output/message
  Platforms affected: All Linux OS environments
  Functional Area affected: ESS/GNR
  Customer Impact: Critical
  Changed Externals: None
  Related defects: None
  

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:

  IJ29191

Fix information

• Fixed component name

  SPEC SCALE STD

• Fixed component ID

  5737F33AP

Applicable component levels