IBM Support

IT24995: SERVER CAN CRASH WHEN RESTORING DATA FROM A CLOUD CONTAINER AND ENCRYPTION ENABLED

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APAR status

  • Closed as program error.

Error description

  • The IBM Spectrum Protect server can crash when trying to
    restore data from a cloud container with encryption enabled.
      This occurs due to client compression being enabled during
      the backup. The compression can cause the extent size to be
      larger than what was planned for at the time of the restore.
      During the restore, the I/O buffer is not large enough to
      accommodate the size of the extent and causes the server to
      crash.
    
    Spectrum Protect and Tivoli Storage Manager Versions Affected:
      Servers 7.1.7 and higher, 8.1.0 and higher
    Customer/L2 Diagnostics (If Applicable)
      The following call stack is seen in the core file:
    
        masterSynchSignalHandler ()
        _int_malloc () from /lib64/libc.so.6
        malloc () from /lib64/libc.so.6
        pkAllocTracked () at pkmemory.c:536
        SdAsyncReadChunk () at sdio.c:4334
        SdAsyncRead () at sdio.c:4097
        AsyncReadThread () at sdprodcon.c:2951
        PcConsumerThread () at prodcons.c:649
        StartThread () at pkthread.c:4016
      To determine the extents that are impacted during the restore
      the following SQL:
    
        db2 connect to tsmdb1
        db2 set schema tsmdb1
        db2 "select poolname, poolid from ss_pools"
        db2 "select count from sd_all_chunks where length>4096000
              and poolid=<cloud pool id> and bitand(flags, 8)=8"
    
        NOTE: Use the first select to get the <cloud pool id> for
        the second select.
    
    Initial Impact:
      Medium
    Additional Keywords:
      Crash TSM ENCRYPTION ENCRYPT COMPRESSION
    

Local fix

  •   N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All IBM Spectrum Protect server users.                       *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See error description.                                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply fixing level when available. This problem is currently *
    * projected to be fixed in levels 7.1.10 and 8.1.6. Note that  *
    * this is subject to change at the discretion of IBM.          *
    ****************************************************************
    

Problem conclusion

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

Temporary fix

Comments

APAR Information

  • APAR number

    IT24995

  • Reported component name

    TSM SERVER

  • Reported component ID

    5698ISMSV

  • Reported release

    81L

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-05-09

  • Closed date

    2018-05-17

  • Last modified date

    2018-05-17

  • 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



Document information

More support for: Tivoli Storage Manager

Software version: 81L

Reference #: IT24995

Modified date: 17 May 2018


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