Avamar: Os backups do Hyper-V falham com erros de acesso negado

Nesse cenário, temos falhas de backup do Hyper-V, e os logs de backup mostram as mensagens de erro "AccessDenied", de acordo com o exemplo abaixo:

From Hyper-V Plugin log:
================
avhypervvss Info <0000>: Error in connecting with the namespace: Exception 'GetWmiConnection : Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))'
avhypervvss Info <0000>: Failed to get the VM info: Excpetion 'GetWmiConnection : Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))'
avhypervvss Info <0000>: QueryVmsBasic : QueryVmsBasic : GetWmiConnection : Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
avhypervvss Info <0000>: QueryVmsFull : QueryVmsBasic : QueryVmsBasic : GetWmiConnection : Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
avhypervvss Info <0000>: GetClusterVMs : QueryVmsFull : QueryVmsBasic : QueryVmsBasic : GetWmiConnection : 
                         Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
avhypervvss Info <0000>: Exception in GetClusterVMs GetClusterVMs : QueryVmsFull : QueryVmsBasic : QueryVmsBasic : GetWmiConnection :
                         Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).

avhypervvss Error <41753>: Unable to get the clustered VMs for backup. 
avhypervvss Error <41731>: Failed to collect the list of local VMs on this host
avhypervvss Error <41581>: Failed to backup targets. Unable to expand targets.
avhypervvss Error <41662>: Failed to validate and expand the targets.
avhypervvss Error <41659>: Backup did not complete successfully


From cluster service log:
================
winclustersvc DEBUG<0000>: ===> QueryVmsFull 
winclustersvc INFO<0000>:  Get the basic info for the target VMs 
winclustersvc INFO<0000>:  Start getting the basic of the VMs 
winclustersvc DEBUG<0000>: Connect with namespace '\\xxxxxxxx\root\virtualization\v2' 
winclustersvc ERROR<0000>: Error in connecting with the namespace: Exception 'GetWmiConnection : Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))' 
winclustersvc ERROR<0000>: Failed to get the VM info: Excpetion 'GetWmiConnection : Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))' 
winclustersvc ERROR<0000>: QueryVmsBasic : QueryVmsBasic : GetWmiConnection : Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) 
winclustersvc ERROR<0000>: QueryVmsFull : QueryVmsBasic : QueryVmsBasic : GetWmiConnection : Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) 
winclustersvc ERROR<0000>: GetClusterVMs : QueryVmsFull : QueryVmsBasic : QueryVmsBasic : GetWmiConnection : 
                           Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) 
winclustersvc ERROR<0000>: Exception in GetClusterVMs GetClusterVMs : QueryVmsFull : QueryVmsBasic : QueryVmsBasic : GetWmiConnection : 
                           Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).

 

Esses tipos de erros são autoexplicativos. Esses erros significam que a conta de usuário dos serviços do Avamar (agente local e agente de cluster) não tem permissões suficientes para executar as consultas do Windows Management Instrumentation (WMI).

Para resolver esse problema, conceda as permissões corretas à conta de usuário que está sendo usada para executar os serviços do Avamar Client.

Para corrigir as permissões de usuário de backup, siga o artigo da base de conhecimento abaixo:
Avamar: Plug-in do Hyper V — como criar e configurar manualmente a conta de usuário com e sem usar privilégios de administrador de domínio.

Isso também é mencionado com mais detalhes no "Guia do usuário do Dell Avamar for Hyper-V". Consulte o link para o guia da versão 19.10 ou consulte a página de suporte do Avamar para qualquer outra versão.