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IT21650: LOCAL PROTECT STGPOOL CAN CAUSE DB TO INCREASE DURING RECLAIM PHASE WHICH MAY CRASH THE SERVER INSTANCE

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APAR status

  • Closed as program error.

Error description

  • Running local protect stgpool to protect the container storage
    pool to a local copy storage.  The db size start to increase
    after the protect stgpool process start to reclaim local tapes.
    .
    L2/customer diagnostics:
    .
    1:  use monitor script to monitor the db container size , the db
    size start to increase after the protect stgpool process
    triggers the reclaim:
    
    
    DB size  before reclaim starts:
    
    /dev/mapper/tsmvg_db001-tsmlv_db001
                           131976676  103599580    28377096  79%
    /tsmdata/db001
    /dev/mapper/tsmvg_db002-tsmlv_db002
                           131976676  103599628    28377048  79%
    /tsmdata/db002
    /dev/mapper/tsmvg_db003-tsmlv_db003
                           131976676  103600448    28376228  79%
    /tsmdata/db003
    /dev/mapper/tsmvg_db004-tsmlv_db004
                           131976676  103598264    28378412  79%
    /tsmdata/db004
    /dev/mapper/tsmvg_db005-tsmlv_db005
                           131976676  103598936    28377740  79%
    /tsmdata/db005
    /dev/mapper/tsmvg_db006-tsmlv_db006
                           131976676  103600360    28376316  79%
    /tsmdata/db006
    /dev/mapper/tsmvg_db007-tsmlv_db007
                           131976676  103600396    28376280  79%
    /tsmdata/db007
    /dev/mapper/tsmvg_db008-tsmlv_db008
                           131976676  103599404    28377272  79%
    /tsmdata/db008
    /dev/mapper/tsmvg_db009-tsmlv_db009
                           131976676  103599244    28377432  79%
    /tsmdata/db009
    /dev/mapper/tsmvg_db010-tsmlv_db010
    
    
    ...
    
    2: start reclaim:
    
    07/20/2017 15:01:18      ANR4031I PROTECT STGPOOL: Reclamation
    processing started f
                              or container-copy storage pool
    copypool. (SESSION:
                              254643, PROCESS: 153)
    07/20/2017 15:01:18      ANR1040I Space reclamation started for
    volume 002274L4, st
                              orage pool copypool (process number
    149). (SESSION:
                               254643, PROCESS: 153)
    07/20/2017 15:01:18      ANR1040I Space reclamation started for
    volume 009957L4, st
                              orage pool copypool (process number
    149). (SESSION:
                               254643, PROCESS: 153)
    07/20/2017 15:01:18      ANR1040I Space reclamation started for
    volume 002182L4, st
                              orage pool copypool (process number
    149). (SESSION:
                               254643, PROCESS: 153)
    07/20/2017 15:01:18      ANR1040I Space reclamation started for
    volume 002355L4, st
                              orage pool copypool (process number
    149). (SESSION:
                               254643, PROCESS: 153)
    
    3: the db size after the reclaim starts:
    
    
                           131976676  119677800    12298876  91%
    /tsmdata/db001
    /dev/mapper/tsmvg_db002-tsmlv_db002
                           131976676  119677964    12298712  91%
    /tsmdata/db002
    /dev/mapper/tsmvg_db003-tsmlv_db003
                           131976676  119678240    12298436  91%
    /tsmdata/db003
    /dev/mapper/tsmvg_db004-tsmlv_db004
                           131976676  119676700    12299976  91%
    /tsmdata/db004
    /dev/mapper/tsmvg_db005-tsmlv_db005
                           131976676  119677744    12298932  91%
    /tsmdata/db005
    /dev/mapper/tsmvg_db006-tsmlv_db006
                           131976676  119678448    12298228  91%
    /tsmdata/db006
    /dev/mapper/tsmvg_db007-tsmlv_db007
                           131976676  119677736    12298940  91%
    /tsmdata/db007
    /dev/mapper/tsmvg_db008-tsmlv_db008
                           131976676  119676788    12299888  91%
    /tsmdata/db008
    /dev/mapper/tsmvg_db009-tsmlv_db009
                           131976676  119676640    12300036  91%
    /tsmdata/db009
    /dev/mapper/tsmvg_db010-tsmlv_db010
    
    
    
    4: After the process finishes, the increased space will be
    released
    
    
    /dev/mapper/tsmvg_db001-tsmlv_db001
                           131976676  103599580    28377096  79%
    /tsmdata/db001
    /dev/mapper/tsmvg_db002-tsmlv_db002
                           131976676  103599628    28377048  79%
    /tsmdata/db002
    /dev/mapper/tsmvg_db003-tsmlv_db003
                           131976676  103600448    28376228  79%
    /tsmdata/db003
    /dev/mapper/tsmvg_db004-tsmlv_db004
                           131976676  103598264    28378412  79%
    /tsmdata/db004
    /dev/mapper/tsmvg_db005-tsmlv_db005
                           131976676  103598936    28377740  79%
    /tsmdata/db005
    /dev/mapper/tsmvg_db006-tsmlv_db006
                           131976676  103600360    28376316  79%
    /tsmdata/db006
    /dev/mapper/tsmvg_db007-tsmlv_db007
                           131976676  103600396    28376280  79%
    /tsmdata/db007
    /dev/mapper/tsmvg_db008-tsmlv_db008
                           131976676  103599404    28377272  79%
    /tsmdata/db008
    /dev/mapper/tsmvg_db009-tsmlv_db009
                           131976676  103599244    28377432  79%
    /tsmdata/db009
    /dev/mapper/tsmvg_db010-tsmlv_db010
    
    
    Note:
    -The increased space usage is specific to the temp DB
    tablespace.  The allocated temp space will be released after the
     transaction finishes or terminates.
    - If the temp tablespace increase results in the container
    filesystem to filling, the Spectrum Protect server instance will
    crash due to the out of space condition.
    
    Platform Version affected:
    IBM spectrum protect Server v71 , V81 on all supported platforms
    .
    

Local fix

  • Local Fix:
    -Use reclaim=No option with "protect stgpool type=local " to
    prevent the issue
    or
    Monitor the db container usage during protect to ensure it has
    sufficient free space to allow the local protect and reclaim to
    finish.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All Tivoli Storage Manager server users.                     *
    * All IBM Spectrum Protect server users.                       *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * All Tivoli Storage Manager server users.                     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply fixing level when available. This problem is currently *
    * projected to be fixed in levels 7.1.9 and 8.1.3. 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.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT21650

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    81A

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-07-31

  • Closed date

    2017-08-04

  • Last modified date

    2017-09-19

  • 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

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGSG7","label":"Tivoli Storage Manager"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"81A","Edition":"","Line of Business":{"code":"LOB26","label":"Storage"}}]

Document Information

Modified date:
19 September 2017