IC89088: NO ERROR MESSAGE IS RECORDED IN ACTLOG EVEN WHEN BACKUP FAILED WITH ANS1312E.

APAR status

• Closed as program error.

Error description

• Given the following conditions when multiple backups are running
  at the same time,
  - PRIMARY and COPY STGPOOL are used with enabling simultaneous
  write operation.
  - PRIMARY and COPY STGPOOL are tape library device.
  - Number of writable private volumes is less than number of
  running backup processes.
  - No scratch volumes are available
  
  A backup session attempts to open two volumes in each PRIMARY
  and COPY asynchronously and if all volumes are in use by other
  backup sessions, a later backup session usually waits for a
  volume being available.  However, before waiting on the 2nd
  volume, it checks if there are any other backup sessions waiting
  on the 1st volume that is already opened.   If any waiters are
  on the 1st volume, the backup fails with the following error to
  avoid the potential deadlock.
  ---
  ANS1425E The image operation for volume filespace-name cannot be
  retried because of a severe error.
  ANS1228E Sending of object 'object-name' failed
  ANS1312E Server media mount not possible
  ANS1813E Image Backup processing of 'filespace-name' finished
  with failures.
  ---
  
  Even though the backup fails due to above reason, no error is
  recorded in ACTLOG except ANR1405W warning message, so it is
  difficult to determine the reason why a backup ended with
  failure.
  ---
  ANR1405W Scratch volume mount request denied - no scratch volume
  available.
  ---
  
  The goal of this APAR is to add new error in ACTLOG that
  describes the cause of the backup failure.
  
  Tivoli Storage Manager Versions Affected:
  5.5, 6.x
  
  Initial Impact:
  Medium
  
  Additional Keywords:
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Tivoli Storage Manager server users with *
  *                                                              *
  *                 limited or no scratch tapes available.       *
  ****************************************************************
  * PROBLEM DESCRIPTION: See ERROR DESCRIPTION.                  *
  ****************************************************************
  * RECOMMENDATION: Apply fixing level when available.           *
  *                 This problem is currently projected to be    *
  *                 fixed in level 6.3.4.  Note that this is     *
  *                 subject to change at the discretion of       *
  *                 IBM.                                         *
  ****************************************************************
  *
  

Problem conclusion

• This problem has be resolved.  The following new message was
  created for the described situation:
  
  ANR1948W
  Volume mount request for <volume name> denied - server
  operation cannot wait for the volume.
  
  Explanation:
  If an operation acquired a volume and a second operation waits
  for that same volume, the first operation does not wait to
  acquire any other volumes.  If the first operation was allowed
  to wait for another volume, a deadlock could occur.
  
  System action:
  Server operations continue, volume acquisition may be tried
  again, including attempts to mount scratch tapes, but the
  server operation does not wait to acquire the volume.
  
  User response:
  If the server operation succeeds, no action is required.
  However, if the operation fails, you need to supply more
  scratch tapes to the storage pool.
  
  Affected platforms:  AIX, HP-UX, Linux, Solaris, and Windows.
  

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:

Fix information

• Fixed component name

  TSM SERVER

• Fixed component ID

  5698ISMSV

Applicable component levels

• R63A PSY

     UP

• R63H PSY

     UP

• R63L PSY

     UP

• R63S PSY

     UP

• R63W PSY

     UP