IC64494: SERVER DEADLOCKS WHEN GENERATING BACKUPSETS IN PARALLEL

IBM Tivoli Storage Manager V6.1 Fix Pack 3 (6.1.3) Server Downloads

APAR status

• Closed as program error.

Error description

• Running multiple GENERATE BACKUPSET commands might result in a
  deadlock if the number of generate processes exceed the number
  of available mountpoints.
  If you face this symptom, the GENERATE BACKUPSET processes are
  not cancellable.  When evaluating the available number of mount
  points please consider that already one process might require
  two mount points, one for read and one for write.
  
  Tivoli Storage Manager Versions Affected: all supported
  
  Level 2 diagnostics:
  A PVR trace will show mount points not granted for the processes
  involved:
  18:30:40.104 [666][pvrmp.c][4648][PvrStealIdleMp]:Total MPs in
  library 3584JAG3 are:
  18:30:40.104 [666][pvrmp.c][4651][PvrStealIdleMp]:  reserved =
  0, open = 0, opening = 0, idle = 2
  18:30:40.104 [666][pvrmp.c][4654][PvrStealIdleMp]:  idle with
  dismount failures = 0, dismounting = 0, dismounted = 0
  18:30:40.105 [666][pvrmp.c][4656][PvrStealIdleMp]:  waiting for
  idle dismount = 1, sync dismounts = 0.
  18:30:40.105 [666][pvrmp.c][4677][PvrStealIdleMp]:Count for all
  device classes is 2.
  
  Input mountpoint
  18:31:22.624 [666][pvrmp.c][884][pvrAcquireMountPoint]:Total MPs
  in library 3584JAG3 are:
  18:31:22.624 [666][pvrmp.c][887][pvrAcquireMountPoint]:
  reserved = 0, open = 2, opening = 2, idle = 0
  18:31:22.625 [666][pvrmp.c][890][pvrAcquireMountPoint]:  idle
  with dismount failures = 0, dismounting = 0, dismounted = 0
  18:31:22.625 [666][pvrmp.c][892][pvrAcquireMountPoint]:  waiting
  for idle dismount = 0, sync dismounts = 0.
  18:31:22.629
  [666][pvrmp.c][942][pvrAcquireMountPoint]:Mountlimit is exceeded
  - Mountpoint not granted.
  
    Initial Impact: Medium
  
    Additional Keywords: TSM
  

Local fix

• do not run more GENERATE BACKUPSET commands than mount points
  are available.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Tivoli Storage Manager server users      *
  *                 who are issuing GENERATE BACKUPSET           *
  *                 commands in parallel.                        *
  ****************************************************************
  * PROBLEM DESCRIPTION: See ERROR DESCRIPTION.                  *
  ****************************************************************
  * RECOMMENDATION: Apply fixing level when available. This      *
  *                 problem is currently fixed in levels         *
  *                 5.4.5, 5.5.3 and  projected to be fixed in   *
  *                 level 6.1.3. Note that this issubject to     *
  *                 change at the discretion of IBM.             *
  ****************************************************************
  *
  

Problem conclusion

• This problem was fixed.
  Affected platforms:  AIX, HP-UX, Sun Solaris, Linux, z/OS, 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:

  PM01690 PM01692

Fix information

• Fixed component name

  TSM SERVER

• Fixed component ID

  5698ISMSV

Applicable component levels

• R54A PSY

     UP

• R54H PSY

     UP

• R54L PSY

     UP

• R54S PSY

     UP

• R54W PSY

     UP

• R55A PSY

     UP

• R55H PSY

     UP

• R55L PSY

     UP

• R55S PSY

     UP

• R55W PSY

     UP

• R61A PSY

     UP

• R61H PSY

     UP

• R61L PSY

     UP

• R61S PSY

     UP

• R61W PSY

     UP