none
DPM2012SP1 - VSS Error 8194 - Backing up WS 2012 VMs using child partion snapshot RRS feed

  • Question

  • Hello,

    I have got a strange issue with 3 VMs.

    • The VMs are running Windows Server 2012 as a guest OS
    • The VMs where created on Windows 2008R2 Hyper-V (1 VM on a cluster and 2 VMs on a stand alone host)
    • The VMs where migrated to a Windows Server 2012 Hyper-V cluster (using cluster migration wizard / import-export)

    When I try to backup the VMs with DPM 2012SP1, DPM gives me VSS error 30112

    On the host, I  got VSS error 8194.

    Protokollname: Application
    Quelle:        VSS
    Datum:         16.05.2013 11:38:47
    Ereignis-ID:   8194
    Aufgabenkategorie:Keine
    Ebene:         Fehler
    Schlüsselwörter:Klassisch
    Benutzer:      Nicht zutreffend
    Computer:      LAB-HYC02N01.it-cloud.test
    Beschreibung:
    Volumeschattenkopie-Dienstfehler: Beim Abfragen nach der Schnittstelle "IVssWriterCallback" ist ein unerwarteter Fehler aufgetreten. hr = 0x80070005, Zugriff verweigert
    . Die Ursache hierfür ist oft eine falsche Sicherheitseinstellung im Schreib- oder Anfrageprozess. 
    
    Vorgang:
       Generatordaten werden gesammelt
    
    Kontext:
       Generatorklassen-ID: {e8132975-6f93-4464-a53e-1050253ae220}
       Generatorname: System Writer
       Generatorinstanz-ID: {311713bc-21e3-46f5-874b-ee8886eeeb22}
    Ereignis-XML:
    <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
      <System>
        <Provider Name="VSS" />
        <EventID Qualifiers="0">8194</EventID>
        <Level>2</Level>
        <Task>0</Task>
        <Keywords>0x80000000000000</Keywords>
        <TimeCreated SystemTime="2013-05-16T09:38:47.000000000Z" />
        <EventRecordID>26998</EventRecordID>
        <Channel>Application</Channel>
        <Computer>LAB-HYC02N01.it-cloud.test</Computer>
        <Security />
      </System>
      <EventData>
        <Data>0x80070005, Zugriff verweigert
    </Data>
        <Data>
    
    Vorgang:
       Generatordaten werden gesammelt
    
    Kontext:
       Generatorklassen-ID: {e8132975-6f93-4464-a53e-1050253ae220}
       Generatorname: System Writer
       Generatorinstanz-ID: {311713bc-21e3-46f5-874b-ee8886eeeb22}</Data>
        <Binary>2D20436F64653A20575254575254494330303030313330302D2043616C6C3A20575254575254494330303030313235342D205049443A202030303030313339362D205449443A202030303030393136342D20434D443A2020433A5C57696E646F77735C73797374656D33325C737663686F73742E657865202D6B204E6574776F726B53657276696365202020202020202D20557365723A204E616D653A204E542D4155544F524954C4545C4E65747A7765726B6469656E73742C205349443A532D312D352D323020</Binary>
      </EventData>
    </Event>

    ---

    The issue only affects the three migrated 2012 VMs. All migrated 2008(R2) VMs and new created 2012 VMs are backing up fine.



    This posting is provided "AS IS" with no warranties.

    Thursday, May 16, 2013 10:33 AM

Answers

  • After some further testing, I was able to track the issues myself.

    There where two different problems causing the backups to fail. 

    ---

    I disabled the hardware vss provider (DELL Equallogic). This results in Hyper-V VSS error 8229 wich indicates a VSS problem inside the guest.

    1. One VM didn't have enough free space on the systen-reserved partition to perform a backup.
      I found some "leftovers" from the MDT deployment. After cleaning up the partion and rebooting the server the backup job completed successfully.
    2. The remaining two VMs are setup as a file and iscsi-target cluster for testing purposes.
      After setting up the VDS/VSS provider for the iSCSI target, configuring DCOM security and rebooting the servers, the backup completed.
      http://blogs.technet.com/b/filecab/archive/2012/10/08/iscsi-target-storage-vds-vss-provider.aspx

    ---Since the backup on the old 2008R2 hosts was done using "saved state" the problems only became visible after the migration and where not related to it.


    This posting is provided "AS IS" with no warranties.

    • Marked as answer by Dark Grant Thursday, May 16, 2013 3:59 PM
    Thursday, May 16, 2013 3:58 PM