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Error 33620: Dpm encounterd error from VMware Disk Subsystem

Sébastien Lagueux 146 Reputation points
2022-12-03T01:01:34.703+00:00

Hi!
Since I think installing UR1 for DPM 2022, vm backups fail. I don't see anything else that has changed except the DPM update.
![266739-image.png][1]
In the DPMRACurr.errlog log file I see these errors, I don't know if it's related: 

WARNING Error in exclusion of disk with exception System.IO.FileNotFoundException: Could not find file 'C:\Program Files\Microsoft System Center 2022\DPM\DPM\bin\excludedisk.xml'.  
2EA4 2C1C 12/03 00:12:51.779 22 VMWareServer.cs(2175) WARNING File name: 'C:\Program Files\Microsoft System Center 2022\DPM\DPM\bin\excludedisk.xml'  
2EA4 2C1C 12/03 00:12:51.779 22 VMWareServer.cs(2175) WARNING    at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)  
2EA4 2C1C 12/03 00:12:51.779 22 VMWareServer.cs(2175) WARNING    at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)  
2EA4 2C1C 12/03 00:12:51.779 22 VMWareServer.cs(2175) WARNING    at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize)  
2EA4 2C1C 12/03 00:12:51.779 22 VMWareServer.cs(2175) WARNING    at System.Xml.XmlDownloadManager.GetStream(Uri uri, ICredentials credentials, IWebProxy proxy, RequestCachePolicy cachePolicy)  
2EA4 2C1C 12/03 00:12:51.779 22 VMWareServer.cs(2175) WARNING    at System.Xml.XmlUrlResolver.GetEntity(Uri absoluteUri, String role, Type ofObjectToReturn)  
2EA4 2C1C 12/03 00:12:51.779 22 VMWareServer.cs(2175) WARNING    at System.Xml.XmlTextReaderImpl.FinishInitUriString()  
2EA4 2C1C 12/03 00:12:51.779 22 VMWareServer.cs(2175) WARNING    at System.Xml.XmlReaderSettings.CreateReader(String inputUri, XmlParserContext inputContext)  
2EA4 2C1C 12/03 00:12:51.779 22 VMWareServer.cs(2175) WARNING    at Microsoft.Internal.EnterpriseStorage.Dls.VMWareSDK.VMWareServer.GetExcludedDiskFileNames(String uuid)

Do you have an idea?
[1]: /api/attachments/266739-image.png?platform=QnA

Microsoft System Center
Microsoft System Center
A suite of Microsoft systems management products that offer solutions for managing datacenter resources, private clouds, and client devices.
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  1. pissteufel 6 Reputation points
    2023-02-07T13:42:22.7866667+00:00

    We also have this issue with some VMware virtual machines which are backed up by SCDPM 2022 UR1.

    The issue seems to be related to application-consistent quiescing snapshots. As a workaround forcing a crash consistent snapshot helps to backup the affected VMware virtual machines by SCDPM 2022 UR1.

    Instead of uninstalling the complete VMware tools from virtual machine one of the following actions help:

    • Set VMware VM configuration parameter "disk.EnableUUID" to FALSE (requires downtime)
    • Uninstall only VSS component of VMware tools
    • Create/Modify "Tools.conf" file in path "C:\ProgramData\VMware\VMware Tools" and add these lines to file: [vmbackup]
      vss.disableAppQuiescing = true Save and close the Tools.conf file. Restart the VMware Tools Service for the changes to take effect.

    @XinGuo-MSFT : Hopefully Microsoft provides a fix for this issue soon.

    Regards

    1 person found this answer helpful.
  2. Matt-5778 21 Reputation points
    2022-12-06T16:03:06.627+00:00

    If you search your logs for "VMWareErrorCode = 1"' do you get any hits?

  3. Lost Cause 1 Reputation point
    2023-03-29T11:41:48.04+00:00

    I am having the same issue. After the DPM 2022 UR1 update I cannot backup newly added VMWare 7.3 VMs. I receive a disk subsystem error. I try the same VM on a DPM 2022 server without UR1 and it works fine. Any word on a hotfix?

  4. Michael Jacquet 0 Reputation points
    2024-05-08T21:54:27.5033333+00:00

    Data Protection Manager 2022 + UR2 and Microsoft Azure Backup Server MABS V4+UR1 both contain enhancements to fall back to VMware Crash consistent backup of an application consistent backup fails. Just need to add a registry entry.

    DPM2022 UR2 Documentation
    ===================

    Fallback to crash consistent backups for VMware VMs

    https://learn.microsoft.com/en-us/system-center/dpm/back-up-vmware?view=sc-dpm-2022&tabs=Add#fallback-to-crash-consistent-backups-for-vmware-vms

    MABS V4 UR1 Documentation:
    =====================

    Fallback to crash consistent backups for VMware VMs

    https://learn.microsoft.com/en-us/azure/backup/backup-azure-backup-server-vmware#applicationquiescefault

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