适用于 Unity 的 CSI 驱动程序：如果使用 NFS 协议，在 Unity 上创建小于 1.5 GB 的持久卷声明 (PVC) 时，PVC 显示为挂起状态
Summary: 如果使用 NFS (Network File System)，在 Unity 上创建小于 1.5 GB 的持久卷声明 (PVC) 时，PVC 显示为挂起状态。
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Symptoms
如果使用 NFS 协议，用户无法在 Unity 上创建小于 1.5 GB 的 PVC，并显示以下消息：
PVC 上的 Describe 显示：
PVC 显示“Pending”：
CSI 控制器驱动程序日志显示：
PVC 上的 Describe 显示：
# 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)}]
...
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)}]
PVC 显示“Pending”：
# kubectl get pvc -n test
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
pvol0 Pending unity-nfs 37m
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
pvol0 Pending unity-nfs 37m
CSI 控制器驱动程序日志显示：
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)}]"
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
如文档中所述，这是阵列限制：
提醒：基于 NFS 的卷/pvc 的大小要求增加了额外的 1.5 GB。这是由于 Unity 阵列要求，它占用此 1.5 GB 用于存储元数据。这使得通过驱动程序的 NFS 协议的最小 PVC 大小为 1.5 GB，即直接在阵列上创建时为 3 GB。
Resolution
应创建最小大小为 1.5 GB 的 PVC。
Products
Dell EMC UnityArticle Properties
Article Number: 000186132
Article Type: Solution
Last Modified: 08 Apr 2022
Version: 3
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