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IT18678: MICROSOFT HYPER-V BACKUP FAILS WITH ANS4169E AND ANS1228E

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The backup of a Microsoft Hyper-V guest might fail with
    following error:
    
    ANS0361I DIAG: vmHypervBackup::ProcessExtent(): Read failed
    with rc=1117
    ANS0361I DIAG: vmHypervBackup::ProcessExtent(): Read failed
    with rc=122
    ANS4169E A write failure occurred on the local disk proxy used
    to temporarily store the virtual machine virtual disk
    information. The write failure can be caused by the lack of
    available disk space on the drive used to store this
    information. The VMBACKDIR option can be used to assign a
    different disk location for this purpose.  Check the drive
    being used and ensure that there is enough space available for
    this operation.
    [...]
    ANS1228E Sending of object 'VMguest' failed.
    
    The failure is caused by the VHDX size of the Hyper-V guest not
    being a multiple of 16 KB (16384 bytes).
    
    IBM Spectrum Protect Versions Affected:
    IBM spectrum Protect for Virtual Environments - Data Protection
    for Microsoft Hyper-V 7.1.6
    IBM spectrum Protect for Virtual Environments - Data Protection
    for Microsoft Hyper-V 8.1
    
    | MDVPARTL 7.1.6.0-TIV_5698ISMCL | IT11599
    
    Customer/L2 Diagnostics:
    Verify the VHDX size using PowerShell Cmdlet:
     Get-VHD 'diskname'
    Where diskname is the fully qualified path to the .vhdx
    Look for the 'Size' field. If this value is not a multiple of
    16384 bytes, this APAR applies.
    
    Initial Impact: Medium
    
    Additional Keywords: TSM, Tivoli, Storage, Manager, Hyperv, MS,
    VM, IT11599
    

Local fix

  • Resize the VHDX file to a multiple of 16384 bytes using
    Microsoft PowerShell Cmdlet:
     Resize-VHD -path 'diskname.vhdx' -SizeBytes <Size in bytes>
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Data Protection for Microsoft Hyper-V versions 7.1.3, 7.1.4, *
    * 7.1.6 and 8.1.0 running on all Microsoft Windows x64         *
    * platforms                                                    *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See ERROR DESCRIPTION                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * This issue is projected to be fixed in the Backup-Archive    *
    * Client version 7.1.6.5, 7.1.8, 8.1.0.2, 8.1.2 on all         *
    * Microsoft Windows x64 platforms                              *
    *                                                              *
    * Note 1: The Backup-Archive Client is a part of the Data      *
    * Protection for Microsoft Hyper-V. In Data Protection for     *
    * Microsoft Hyper-V environments, the Backup-Archive Client is *
    * also known as the data mover.                                *
    * Note 2: This is subject to change at the discretion of IBM.  *
    ****************************************************************
    

Problem conclusion

  • Algorithm that calculates amount of data to sent during backup
    was updated to correctly handle cases when VHDX size is not
    multiply of 16834 bytes.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT18678

  • Reported component name

    TSM VE DP MS HY

  • Reported component ID

    5725TVEHV

  • Reported release

    71W

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-01-06

  • Closed date

    2017-03-30

  • Last modified date

    2017-03-30

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Modules/Macros

  • DSMC
    

Fix information

  • Fixed component name

    TSM CLIENT

  • Fixed component ID

    5698ISMCL

Applicable component levels

  • R71W PSY

       UP

  • R81W PSY

       UP



Document information

More support for: Tivoli Storage Manager

Software version: 71W

Reference #: IT18678

Modified date: 30 March 2017