IT27907: MEMORY LEAK ON LIBRARY CLIENT SERVER AND STORAGE AGENTS IN SMQUERYSHAREDLIBRARY

8.1.8.000-IBM-SPOC-Linuxs390x
8.1.8.000-IBM-SPSRV-Linuxppc64le
8.1.8.000-IBM-SPCMS-WindowsX64
8.1.8.000-IBM-SPCMS-WindowsI32
8.1.8.000-IBM-SPCMS-Linuxx86_64
8.1.8.000-IBM-SPOC-WindowsX64
8.1.8.000-IBM-SPOC-Linuxx86_64
8.1.8.000-IBM-SPOC-LinuxPPC64le
8.1.8.000-IBM-SPOC-AIX
8.1.8.000-IBM-SPSRV-WindowsX64
8.1.8.000-IBM-SPSRV-Linuxx86_64
8.1.8.000-IBM-SPSRV-Linuxs390x
8.1.8.000-IBM-SPSRV-AIX

APAR status

• Closed as program error.

Error description

• A memory leak can be seen on server instances acting as
  library clients, and also seen on storage agents.
  
  The memory leak occurs when the library client or storage agent
  polls the library manager for information about shared libraries
  and drives.  The amount of memory allocated by the library
  client or storage agent during polling will vary depending on
  the number of
  shared libraries/drives returned by the library manager server.
  
  The output from the "SHOW ALLOC" command will
  show a gradual increase in the number of memory allocation
  requests and the count of allocated bytes associated with the
  smQuerySharedLibrary() routine, as seen in the following
  example:
  
  smlshare.c line   702:    22470 entries for       1617840 bytes
  (smQuerySharedLibrary) thread 1(main parent=0)
  smlshare.c line   736:  2157120 entries for     655764480 bytes
  (smQuerySharedLibrary) thread 1(main parent=0)
  
  
  Over a period of time, this memory leak will cause server memory
  usage to slowly grow indefinitely.
  
  
  
  Note: This is a different memory leak condition than described
  in APARs IT24208 and IT21624.
  
  Initial Impact: Low
  
  IBM Spectrum Protect versions affected:
  Library client servers and storage agents 7.1.x and 8.1.x  on
  all supported platforms
  
  
  Keywords:
  TSM TS001809561 memory leak memleak
  

Local fix

• Restart library client server or storage agent as and when
  needed.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All IBM Spectrum Protect server users of library sharing.    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See error description.                                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply fixing level when available. This problem is currently *
  * projected to be fixed                                        *
  * in level 8.1.8.  Note that this is subject to change at the  *
  * discretion of IBM.                                           *
  ****************************************************************
  

Problem conclusion

• This problem was fixed.
  Affected platforms for reported release:  AIX, HP-UX, Linux,
  Solaris, and Windows.
  Platforms fixed:  AIX, Linux, 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