IC85800: ADDITIONAL DESCRIPTION REQUIRE FOR 'USED SPACE' AND 'SPACE USED BY DATABASE' PARAMETERS

APAR status

• Closed as documentation error.

Error description

• 'Used Space' parameter of command query dbspace requires
  additional description as follow for Linux platform.
  
  'Used Space' parameter shows greater value then used space shows
  in Linux 'df -m' command since on Linux platform 5% of total
  file system size is reserved for root (overhead) but not shown
  as used in command output.
  Note: Same is applicable for 'Space Used by Database' parameter
  of command query db f=d
  
  Example:
  
  #df -m
  Filesystem  1M-blocks   Used  Available Use%  Mounted on
  /dev/xyz     100790     67835   27835    71%  /abc/db1
  
  .
  #query dbspace
  Location    Total Space(MB)  Used Space(MB)  Free Space(MB)
  /abc/db1      100789          72,954         27,834
  .
  So, here we have 72954 ? 67835=5119MB (~5GB) difference in DB
  used space.
  Note: In above example /abc/db1 is a dedicated volume for
  TSM database
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Tivoli Storage Manager server users.     *
  ****************************************************************
  * PROBLEM DESCRIPTION: See error description.                  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  *
  

Problem conclusion

• In the Tivoli Storage Manager Administrator's Reference, the
  "QUERY DBSPACE (Display database storage space)" section will
  be updated to change the description of the "Space Used on
  Filesystem (MB)" field.
  
  For the AIX, HP-UX, Linux, and Solaris platforms, the
  following note will be added: "When you run the QUERY DBSPACE
  command, the value in the output might be greater than the
  value that is obtained by running the df system command. The
  output from the df system command does not include the amount
  of space that is reserved for the root user."
  
  For the Linux platform only, this note will be added: "If you
  run the df system command, the default percentage of space
  that is reserved for the root user is 5%. You can change this
  default value."
  
  
  Affected platforms:  AIX, HP-UX, Solaris, and Linux.
  

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

Applicable component levels