Troubleshooting em Erros no Serviços Volume Shadow Copy (VSS)

Identificando e resolvendo erros com serviços do Volume de Copia de Sombra (VOLUME SHADOW COPY).

Para identificarmos o problema, podemos usar o comando vssadmin.

Sintaxe do vssadmin:

vssadmin list {shadows [/set= [shadow copy set GUID]] | writers | providers}
vssadmin delete shadows /for=<ForVolumeSpec> [/oldest | /all | /shadow=<ShadowID>] [/quiet]

Visualizando o problema:

Para listar os serviços, podemos utilizar o comando vssadmin list writers.

C:Windowssystem32>vssadmin list writers
vssadmin 1.1 – Volume Shadow Copy Service administrative command-line
(C) Copyright 2001-2005 Microsoft Corp.

Writer name: ‘Task Scheduler Writer’
   Writer Id: {d61d61c8-d73a-4eee-8cdd-f6f9786b7124}
   Writer Instance Id: {1bddd48e-5052-49db-9b07-b96f96727e6b}
   State: [1] Stable
   Last error: No error

Writer name: ‘VSS Metadata Store Writer’
   Writer Id: {75dfb225-e2e4-4d39-9ac9-ffaff65ddf06}
   Writer Instance Id: {088e7a7d-09a8-4cc6-a609-ad90e75ddc93}
   State: [1] Stable
   Last error: No error

Writer name: ‘Performance Counters Writer’
   Writer Id: {0bada1de-01a9-4625-8278-69e735f39dd2}
   Writer Instance Id: {f0086dda-9efc-47c5-8eb6-a944c3d09381}
   State: [1] Stable
   Last error: No error

Writer name: ‘System Writer’
   Writer Id: {e8132975-6f93-4464-a53e-1050253ae220}
   Writer Instance Id: {86ed6b7e-4533-4b61-ad77-8908ae546093}
   State: [7] Failed
   Last error: Timed out

Writer name: ‘IIS Config Writer’
   Writer Id: {2a40fd15-dfca-4aa8-a654-1f8c654603f6}
   Writer Instance Id: {b3b29c93-c7e5-4128-94ea-42884d22b802}
   State: [7] Failed
   Last error: Timed out

Writer name: ‘ASR Writer’
   Writer Id: {be000cbe-11fe-4426-9c58-531aa6355fc4}
   Writer Instance Id: {60ea7ad7-3a15-4457-be25-2f01c0fae980}
   State: [7] Failed
   Last error: Timed out

Writer name: ‘WMI Writer’
   Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0}
   Writer Instance Id: {7f853611-7476-4a79-9e7a-42999c869034}
   State: [7] Failed
   Last error: Timed out

Writer name: ‘Registry Writer’
   Writer Id: {afbab4a2-367d-4d15-a586-71dbb18f8485}
   Writer Instance Id: {fa8a22fc-3fc6-4ec2-bed5-a17434d58979}
   State: [7] Failed
   Last error: Timed out

Writer name: ‘BITS Writer’
   Writer Id: {4969d978-be47-48b0-b100-f328f07ac1e0}
   Writer Instance Id: {c188c55e-929c-4110-9edb-919ea5a0e708}
   State: [1] Stable
   Last error: No error

Writer name: ‘COM+ REGDB Writer’
   Writer Id: {542da469-d3e1-473c-9f4f-7847f01fc64f}
   Writer Instance Id: {d3342d08-8020-4c65-8b96-bbcfaad86a39}
   State: [7] Failed
   Last error: Timed out

Writer name: ‘Shadow Copy Optimization Writer’
   Writer Id: {4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f}
   Writer Instance Id: {13af788a-d807-4e48-958c-8a2cae38add4}
   State: [7] Failed
   Last error: Timed out

Writer name: ‘Microsoft Exchange Writer’
   Writer Id: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}
   Writer Instance Id: {f3583bf7-0517-411c-adb5-a460c81928a1}
   State: [7] Failed
   Last error: Retryable error

Writer name: ‘IIS Metabase Writer’
   Writer Id: {59b1f0cf-90ef-465f-9609-6ca8b2938366}
   Writer Instance Id: {77d700ec-b9f0-4e4d-9bae-b97c60e4552f}
   State: [7] Failed
   Last error: Timed out

Resolvendo o problema:

Podemos notar que o State de alguns serviços se encontra Failed.

Utilizando a tabela abaixo, podemos identificar o serviço responsável pelo Writer Name. Com base nos dados, basta acessar o MMC Serviços (services.msc) e reiniciar os serviços.

VSS Writer Service Name Service Display Name
ASR Writer VSS Volume Shadow Copy
BITS Writer BITS Background Intelligent Transfer Service
COM+ REGDB Writer VSS Volume Shadow Copy
DFS Replication service writer DFSR DFS Replication
IIS Config Writer AppHostSvc Application Host Helper Service
IIS Metabase Writer IISADMIN IIS Admin Service
Microsoft Exchange Writer MSExchangeIS Microsoft Exchange Information Store
Microsoft Hyper-V VSS Writer vmms Hyper-V Virtual Machine Management
Registry Writer VSS Volume Shadow Copy
Shadow Copy Optimization Writer VSS Volume Shadow Copy
System Writer CryptSvc Cryptographic Services
WMI Writer Winmgmt Windows Management Instrumentation
 
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Com mais de 15 anos de experiência em tecnologias Microsoft Flavio Ferreira é Cloud Solutions Architect na empresa SYN IT e instrutor Microsoft Certificado (MCT). Nomeado pela Microsoft como MCT Regional Lead no Brasil. Formado em Redes de Computadores e pos-graduando em Gerenciamento de Projetos. Grande experiência em planejamento, execução e acompanhamento de projetos em pequenas, medias e grandes empresas. Realização de suporte elevado, administração e resolução de chamados de incidentes de servidores Microsoft.  Mantém um blog técnico (www.TiComUai.com.br) além de ministrar palestras, treinamentos e criar conteúdo técnico de capacitação na plataforma Microsoft. Tem como foco as tecnologias: Windows Server, Virtualization e Cloud Computing. Especializações em Windows Server System; Hyper-V, Azure e Office 365. Mantem as certificações MCTS, MCSA, MCITP, MS, MCPS e MCT.

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