IT22478: DIRECTORY CONTAINER STORAGE POOL FREE SPACE MAY BE MISLEADING

APAR status

• Closed as suggestion for future release.

Error description

• Directory container storage pools can have both "Dedup" and
  "Non Dedup" containers.
  -
  Dedup containers contain deduplicated data.
  -
  Non dedup containers contain data that is not deduplicated.
  This type of data includes metadata, encrypted data, and data
  that is too small for data deduplication.
  -
  When data is sent to a server directory container storage pool
  it is either written to a container with free space or a new
  container is allocated.  When filesystem has no available free
  space, and one container type (Dedup or Non Dedup) has no
  writable space, the following message will be issued:
  ANR0522W Transaction failed for session ### for node NODE_NAME
  - no space available in storage pool
  DIRECTORY_CONTAINER_POOL_NAME and all successor pools.
  Since one container type may still have writable space, it may
  not be obvious what type of space is not currently available.
  The server should be updated to more clearly display
  information about available space in directory container storage
  pools.
  Versions Affected:
  Tivoli Storage Manager server versions 7.1.3 and higher
  All IBM Spectrum Protect server versions
  Initial Impact: Medium
  Additional Keywords:
  TSM full chunks ANR0522W Pool out of space
  

Local fix

• Review SHOW SDP for more detailed information about the
  directory container pool.
  Example SHOW SDP output:
  SD Pool DIRECTORY_CONTAINER_POOL_NAME (4):
     Needs Refresh:                        False
     Maximum Size:                         0
     FsCapacity:                    79644708 MB
     FsFreeSpace:                          0 MB
     DedupCntrAllocSpace:           79588330 MB
     DedupCntrUsedSpace:            71878408 MB
     DedupCntrFreeSpace:             7709922 MB
     NonDedupCntrAllocSpace:           49549 MB
     NonDedupCntrUsedSpace:            49549 MB
     NonDedupCntrFreeSpace:                0 MB
     PoolCapacity:                  79637879 MB
     PoolFree:                       7709922 MB
     Dedup Reserved Space:             17434 MB
     Non Dedup Reserved Space:             0 MB
     Compression Enabled:                  No
     Last Space Check: 2017-09-20 10:13:55
  Notice in above output that both NonDedupCntrFreeSpace and
  FsFreeSpace are 0.
  FsFreeSpace - Displays available filesystem space to allocate
                more containers.
  DedupCntrFreeSpace - Displays available space in allocated
                       containers to create new dedup extents.
  NonDedupCntrFreeSpace - Displays available space in allocated
                          containers to create new non-dedup
                          extents.
  

Problem summary

Problem conclusion

Temporary fix

Comments

• This issue is being considered as a suggestion for possible
  implementation in the future.  There is no commitment at this
  time to make the suggested change.  APAR IT22214 made some
  allocation changes to help prevent getting into this situation
  and additional reporting will be added in a future level.
  Affected platforms:  AIX, Linux, and Windows.
  

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