Driver CSI para Unity: A solicitação de volume persistente (PVC) é exibida no estado Pendente ao criar um PVC menor que 1,5 GB no Unity com o protocolo NFS

Summary: A solicitação de volume persistente (PVC) é exibida no estado Pendente ao criar um PVC menor que 1,5 GB no Unity com o protocolo NFS (Network File System).

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Symptoms

O usuário não consegue criar um PVC menor que 1,5 GB no Unity com o protocolo NFS e exibe as seguintes mensagens:

O Describe no PVC mostra:
# kubectl describe pvc pvol0 -n test
...
Warning  ProvisioningFailed    35m                csi-unity.dellemc.com_unity-controller-66c9b748d7-8hxll_456d3759-46b6-42f5-88e0-75ff8036db4a  failed to provision volume with StorageClass "unity-nfs": rpc error: code = Unknown desc =  runid=170 Create Filesystem csi-b46e130f5f failed with error: [{The specified file system size is too small. (Error Code:0x6701401)}]

O PVC mostra Pendente:
# kubectl get pvc -n test
NAME    STATUS    VOLUME   CAPACITY   ACCESS MODES   STORAGECLASS   AGE
pvol0   Pending                                      unity-nfs      37m

Os registros do driver do controlador CSI mostram:
time="2021-05-04T18:05:04Z" level=debug arrayid=apm00180305385 runid=178 msg="Error in response. Method:POST URI:/api/types/storageResource/action/createFilesystem Error: [{The specified file system size is too small. (Error Code:0x6701401)}] JSON Error: [{The specified file system size is too small. (Error Code:0x6701401)}]" func="github.com/dell/gounity.(*Client).executeWithRetryAuthenticate()" file="dell/gounity/unityclient.go:113"
time="2021-05-04T18:05:04Z" level=error arrayid=apm00180305385 runid=178 msg="failed to invoke Unity REST API server" func="github.com/dell/gounity.(*Client).executeWithRetryAuthenticate()" file="dell/gounity/unityclient.go:127"
time="2021-05-04T18:05:04Z" level=debug arrayid=apm00180305385 runid=178 msg="Filesystem create response: Error:[{The specified file system size is too small. (Error Code:0x6701401)}]" func="github.com/dell/csi-unity/service.(*service).CreateVolume()" file="/go/src/csi-unity/service/controller.go:198"
time="2021-05-04T18:05:04Z" level=debug msg="/csi.v1.Controller/CreateVolume: REP 0178: rpc error: code = Unknown desc =  runid=178 Create Filesystem csi-b46e130f5f failed with error: [{The specified file system size is too small. (Error Code:0x6701401)}]"

Cause

Conforme mostrado na documentação, essa é uma limitação do array:
Nota: 1,5 GB é adicionado ao tamanho necessário de volume/PVC baseado em NFS. Isso se deve ao requisito de array do Unity, que consome 1,5 GB para o armazenamento de metadados. Isso muda o tamanho mínimo do PVC para o protocolo NFS via driver para 1,5 GB (ele é de 3 GB quando criado diretamente no array).

Resolution

O PVC deve ser criado com um tamanho mínimo de 1,5 GB.

Products

Dell EMC Unity
Article Properties
Article Number: 000186132
Article Type: Solution
Last Modified: 08 Apr 2022
Version:  3
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