RCT-back-ups van een Hyper-VM met door de gebruiker gemaakt checkpoint mislukken met "Changeblocks are not properly aligned"

Summary: KB-artikel over RCT-back-ups die mislukken op VM's met op maat gemaakte checkpoints (niet-Avamar).

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.

Symptoms

Back-ups van Hyper-VM's met door de gebruiker gemaakt checkpoint (niet Avamar-created/recovery) mislukken met fouten die vergelijkbaar zijn met het volgende:
 

avhypervvss Error : The plugin on remote client DELL1 (192.168.1.3) terminated with code 10020: completed with errors, client log should be examined
avhypervvss Error : 1 remote client(s) failed to complete operation on the remote file targets
avhypervvss Error : Failed to backup Virtual Machine 'EMCPC' 


 

Vanaf het DELL1 knooppunt:

avhypervvss Error : Changeblocks are not properly aligned to parent disk(\\?\C:\ClusterStorage\Volume6\EMCPC\EMCPC-C.VHDX). Full backup is recommended as Incremental cannot be promoted to Full at this stage of program.
avhypervvss Error : Changeblocks are not properly aligned to parent disk(\\?\C:\ClusterStorage\Volume6\EMCPC\EMCPC-E.VHDX). Full backup is recommended as Incremental cannot be promoted to Full at this stage of program.
avhypervvss Error : Backup extent creation failed for chain \\?\C:\ClusterStorage\Volume6\EMCPC\EMCPC-C.VHDX
avhypervvss Error : Backup extent creation failed for chain \\?\C:\ClusterStorage\Volume6\EMCPC\EMCPC-E.VHDX
...
avhypervvss Error : Failed to parse disk chain C:\ClusterStorage\Volume6\EMCPC\EMCPC-C.VHDX
avhypervvss Error : Backup stream generator encountered an internal error. Failed to stream file '00000226\C:\ClusterStorage\Volume6\EMCPC\EMCPC-C.VHDXguid'.
avhypervvss Error : Processing workorder Daily - 8_00pm to 05_59am-DR VM Group 01-1662598800011#301 (pid:3032-Hyper-V VSS) in stream mode failed.



Vanuit het bestand winclustersvc.log (bevindt zich in de map C:\Program Files\avs\var die de actieve eigenaar is van de EMC Backup Agent-service):

 

winclustersvc WARN: WMI API returned error: 'Failed to get the disk information.

The Hyper-V Virtual Machine Management service encountered an unexpected error: There is no change tracking data available associated with the specified change tracking identifier. (0xC03A0030).'
winclustersvc INFO: System.Management.ManagementException: Failed to get the disk information.

The Hyper-V Virtual Machine Management service encountered an unexpected error: There is no change tracking data available associated with the specified change tracking identifier. (0xC03A0030).
at EMC.BRS.HypervProxy.Common.WmiUtilities.ValidateOutput(ManagementScope scope, ManagementBaseObject outputParameters, Boolean throwIfFailed, Boolean printErrors)
at EMC.BRS.WMI.Virtualization.HypervDataProvider.GetRCTExtentsforVm(String vhdPath, String RCTId, UInt64 vhdSize, HypervVm& vm, Boolean bPromoteToFullOnExtentsError)

 

Cause

Mogelijke codebug in oudere hotfixes zoals #335554 voor v19.4.

Resolution

Upgrade naar de nieuwste hotfixes voor de volgende Avamar plug-in versies:

Hotfix #337285 voor versie 19.4.100-124 van de Avamar Hyper-V VSS plug-in
hotfix #337450 voor versie 19.1 7.100-82 van de Avamar Hyper-V VSS plug-in
hotfix #337654 voor versie 19.8.100-83 van de Avamar Hyper-V VSS plug-in

Volg Dell Knowledge Base-artikel 211510, Avamar: Hyper-V VSS plug-in - Configuratie en installatie van de nieuwste cumulatieve hotfixes voor versie 19.4 en hoger, voor gedetailleerde procedures voor het installeren of upgraden van de nieuwste Hyper-V plug-in cumulatieve hotfixes

Tijdelijke oplossing omvat het samenvoegen of verwijderen van het checkpoint terug in de VM door Hyper-V Manager of PowerShell:

https://learn.microsoft.com/en-us/virtualization/hyper-v-on-windows/user-guide/checkpoints

Affected Products

Avamar Plug-in for Hyper-V VSS, Avamar Server
Article Properties
Article Number: 000206345
Article Type: Solution
Last Modified: 30 May 2023
Version:  2
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