持久卷不是快照支持的卷类型（Velero、MinIO、FSB）

问：

我们需要在本地 Kubernetes 集群上备份 PV，因此我们安装了链接到 MinIO 的 Velero，以及 Velero 的文件系统备份。未备份任何 PV，也不会显示任何错误，只有此提及出现在日志中“持久卷不是快照支持的卷类型，正在跳过”。是否有人能够在不使用外部云提供商的情况下在本地集群上备份 PV？

详

Velero 是使用以下命令安装的（credentials-minio 包含 MinIO 的存储桶访问密钥）：

velero install \
    --provider aws \
    --plugins velero/velero-plugin-for-aws:v1.2.1 \
    --bucket ka-backup \
    --secret-file ./credentials-minio \
    --use-node-agent \
    --backup-location-config region=minio,s3ForcePathStyle="true",s3Url=http://minio-1679064025.minio.svc:9000 \
    --snapshot-location-config region=minio

命名空间备份的结果未显示错误，也未显示如下所示的警告，并且阶段的状态已完成。

velero backup describe acme -n velero --kubeconfig ../VKATEST.config
Name:         acme
Namespace:    velero
Labels:       velero.io/storage-location=default
Annotations:  velero.io/source-cluster-k8s-gitversion=v1.25.6
              velero.io/source-cluster-k8s-major-version=1
              velero.io/source-cluster-k8s-minor-version=25

Phase:  Completed

Errors:    0
Warnings:  0

Namespaces:
  Included:  acme
  Excluded:  <none>

Resources:
  Included:        *
  Excluded:        <none>
  Cluster-scoped:  auto

Label selector:  <none>

Storage Location:  default

Velero-Native Snapshot PVs:  auto

TTL:  720h0m0s

CSISnapshotTimeout:  10m0s

Hooks:  <none>

Backup Format Version:  1.1.0

Started:    2023-03-20 14:40:18 +0100 CET
Completed:  2023-03-20 14:40:29 +0100 CET

Expiration:  2023-04-19 15:40:18 +0200 CEST

Total items to be backed up:  437
Items backed up:              437

Velero-Native Snapshots: <none included>

在日志中，我们可以在以下摘录的末尾读取：“持久卷不是快照支持的卷类型，跳过”。

level=info msg="Backing up item" backup=velero/acme logSource="pkg/backup/item_backupper.go:132" name=cassandra-logs-local-storage-fra-vkatest-ml5 namespace= resource=persistentvolumes
level=info msg="Executing takePVSnapshot" backup=velero/acme logSource="pkg/backup/item_backupper.go:412" name=cassandra-logs-local-storage-fra-vkatest-ml5 namespace= resource=persistentvolumes
level=info msg="label \"topology.kubernetes.io/zone\" is not present on PersistentVolume, checking deprecated label..." backup=velero/acme logSource="pkg/backup/item_backupper.go:445" name=cassandra-logs-local-storage-fra-vkatest-ml5 namespace= persistentVolume=cassandra-logs-local-storage-fra-vkatest-ml5 resource=persistentvolumes
level=info msg="label \"failure-domain.beta.kubernetes.io/zone\" is not present on PersistentVolume" backup=velero/acme logSource="pkg/backup/item_backupper.go:449" name=cassandra-logs-local-storage-fra-vkatest-ml5 namespace= persistentVolume=cassandra-logs-local-storage-fra-vkatest-ml5 resource=persistentvolumes
level=info msg="zone info not available in nodeAffinity requirements" backup=velero/acme logSource="pkg/backup/item_backupper.go:454" name=cassandra-logs-local-storage-fra-vkatest-ml5 namespace= persistentVolume=cassandra-logs-local-storage-fra-vkatest-ml5 resource=persistentvolumes
level=info msg="No volume ID returned by volume snapshotter for persistent volume" backup=velero/acme logSource="pkg/backup/item_backupper.go:478" name=cassandra-logs-local-storage-fra-vkatest-ml5 namespace= persistentVolume=cassandra-logs-local-storage-fra-vkatest-ml5 resource=persistentvolumes volumeSnapshotLocation=default
level=info msg="Persistent volume is not a supported volume type for snapshots, skipping." backup=velero/acme logSource="pkg/backup/item_backupper.go:489" name=cassandra-logs-local-storage-fra-vkatest-ml5 namespace= persistentVolume=cassandra-logs-local-storage-fra-vkatest-ml5 resource=persistentvolumes

如果您有线索能够在本地集群上备份 PV，而无需使用外部云提供商，请告诉我们。