Tag Archives: DPM

DPM 2010 Tape Belongs to a DPM server sharing this library

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Recently, I ran into an issue with our DPM 2010 shared tape library installation where several tapes added back to the library where reporting that they belonged to another DPM server sharing the library. I did not care about the data on these tapes, rather, they just needed to be marked as Free in order to be re-used. I logged into each of our DPM servers trying to find the server that owned the tape, but all of them reported the same error.

I tried performing erase operations, re-cataloging the tapes, identifying the unknown tapes, using the ForceTapeFree script , and external erase operations but DPM did not want to free it’s grip. Finally, I surmised that it must be something in the DPMDB rather than actual data on the tape.

It turns out that the media had been assoicated with an orphaned Media Pool. To correct this, I used the following DB queries.

First, I needed to locate the proper information about the tape. This query will give you the slot and barcode number which should allow you to find the piece of media you need to correct. You’ll want the GlobalMediaId field from this query:

select media.BarcodeValue, media.SlotNum, media.MediaId, gmedia.MediaPoolId
from tbl_MM_Global_ArchiveMedia gmedia
innerjoin tbl_MM_Media media
 on gmedia.MediaId = media.GlobalMediaId

Next, you’ll want to find the appropriate “Free Media Pool” for your library. You can do this with the following query:

select library.ProductId, library.SerialNo, library.LibraryId, mpool.Name, mpool.MediaPoolId, mpool.GlobalMediaPoolId
from tbl_MM_MediaPool mpool
innerjoin tbl_MM_Library library
on mpool.LibraryId = library.LibraryId
where mpool.Name =‘Free Media Pool’

You’ll want the GlobalMediaPoolId GUID from that query. We then need to update the media with the proper MediaPoolId:

declare @GlobalMediaId asvarchar
declare @GlobalMediaPoolId asvarchar

set @GlobalMediaId =‘<GUID from query 1>’
set @GlobalMediaPoolId =‘<GUID from query 2>’

update tbl_MM_Global_ArchiveMedia
set MediaPoolId = @GlobalMediaPoolId
where MediaId = @GlobalMediaId

Lastly, perform a refresh in the DPM Console. Your tapes should now be marked as Free.

Error 0x800423f3 backing up Hyper-V VM with DPM 2007

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One error you may receive while backing up a Hyper-V VM with DPM 2007 is the generic “DPM encountered a retryable VSS error. (ID 30112 Details: Unknown error (0x800423f3) (0x800423F3)).” There are a couple of different things that could cause this error. The two most common are:

1. You are running a Windows Server 2008 SP1 Hyper-V host and do not have the appropriate pre-requisites installed. Specifically, the hotfix described in KB959962.

http://technet.microsoft.com/en-us/library/dd347840.aspx

2. There is a VSS error of some kind inside the VM causing the Hyper-V VSS writer to fail.

One of the most common VSS errors inside a Server 2008 VM I have seen, is event id 8193:

Log Name: Application
Source: VSS
Date: <DateTime>
Event ID: 8193
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
Volume Shadow Copy Service error: Unexpected error calling routine ConvertStringSidToSid.? hr = 0x80070539.

Operation:
OnIdentify event
Gathering Writer Data
Context:
Execution Context: Shadow Copy Optimization Writer
Writer Class Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
Writer Name: Shadow Copy Optimization Writer
Writer Instance ID: {3586f039-f2f9-4dcb-a46e-3aaa20f1a2fa}
This error can be solved by following the instructions in this blog post. Specifically, perform these steps outline in KB947242:
  • Delete unresolvable SIDs in the ‘Administrators’ group on the VM.
  • Open regedit and locate ‘HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList’
  • Under the ProfileList subkey, delete any subkey that is named SID.bak

This has resolved the issue in most cases where I have seen that DPM error occur. Some other suggested troubleshooting tips that have solved this problem for me in the past:

  • Re-install the Integration Components and reboot the VM
  • Resolve issues for any VSS writers not listed as stable from the “vssadmin list writers” command on the host or inside the VM. You can restart the following services to resolve some problems
    • System Writer – Cryptographic Services service?(doesn’t affect the system)
    • IIS Metabse Writer – IIS Administrative service (will reset all of IIS)
    • SqlServerWriter – SQL VSS service (doesn’t affect SQL)
    • WMI Writer – Windows Management Instrumentation service (WMI will be unavailable during the
      service restart)
    • BITS Writer – BITS service (BITS will be unavailable during the service restart)
  • Re-register VSS components as described in KB940032
  • Ensure there is sufficient space inside the VM for shadow copies