Question

backup with pv and pvc

4 months ago
21 December 2023
5 comments
192 views

Userlevel 1

andryikoo
New Here
2 comments

when creating a backup with pv and pvc I get this error:

 cause:
    cause:
      fields:
        - name: pvcName
          value: example-pvc-2
        - name: pvName
          value: example-pv
        - name: storageClassName
          value: local-path-kasten
        - name: namespace
          value: default
      file: kasten.io/k10/kio/exec/phases/phase/snapshot.go:243
      function: kasten.io/k10/kio/exec/phases/phase.FetchSnapshotSession
      linenumber: 243
      message: Volume Snapshots are not supported for this storage provider.Try K10's
        Generic Storage Backup
        method(https://docs.kasten.io/latest/install/generic.html?#generic-storage-backup-and-restore)
        or contact contact@kasten.io
    file: kasten.io/k10/kio/exec/phases/backup/snapshot_data_phase.go:148
    function: kasten.io/k10/kio/exec/phases/backup.(*SnapshotDataPhase).Run
    linenumber: 148
    message: Failed to fetch the snapshot session
  message: Job failed to be executed
- cause:
    cause:
      fields:
        - name: pvcName
          value: example-pvc-2
        - name: pvName
          value: example-pv
        - name: storageClassName
          value: local-path-kasten
        - name: namespace
          value: default
      file: kasten.io/k10/kio/exec/phases/phase/snapshot.go:243
      function: kasten.io/k10/kio/exec/phases/phase.FetchSnapshotSession
      linenumber: 243
      message: Volume Snapshots are not supported for this storage provider.Try K10's
        Generic Storage Backup
        method(https://docs.kasten.io/latest/install/generic.html?#generic-storage-backup-and-restore)
        or contact contact@kasten.io
    file: kasten.io/k10/kio/exec/phases/backup/snapshot_data_phase.go:148
    function: kasten.io/k10/kio/exec/phases/backup.(*SnapshotDataPhase).Run
    linenumber: 148
    message: Failed to fetch the snapshot session
  message: Job failed to be executed
- cause:
    cause:
      fields:
        - name: pvcName
          value: example-pvc-2
        - name: pvName
          value: example-pv
        - name: storageClassName
          value: local-path-kasten
        - name: namespace
          value: default
      file: kasten.io/k10/kio/exec/phases/phase/snapshot.go:243
      function: kasten.io/k10/kio/exec/phases/phase.FetchSnapshotSession
      linenumber: 243
      message: Volume Snapshots are not supported for this storage provider.Try K10's
        Generic Storage Backup
        method(https://docs.kasten.io/latest/install/generic.html?#generic-storage-backup-and-restore)
        or contact contact@kasten.io
    file: kasten.io/k10/kio/exec/phases/backup/snapshot_data_phase.go:148
    function: kasten.io/k10/kio/exec/phases/backup.(*SnapshotDataPhase).Run
    linenumber: 148
    message: Failed to fetch the snapshot session
  message: Job failed to be executed

/etc/configmaps$ curl https://docs.kasten.io/tools/k10_primer.sh | bash


Namespace option not provided, using default namespace
Checking for tools
 --> Found kubectl
 --> Found helm
 --> Found jq
 --> Found cat
 --> Found base64
 --> Found tr
Checking if the Kasten Helm repo is present
 --> The Kasten Helm repo was found
Checking for required Helm version (>= v3.9.0)
 --> No Tiller needed with Helm v3.13.1
K10Primer image
 --> Using Image (gcr.io/kasten-images/k10tools:6.5.0) to run test
Checking access to the Kubernetes context kubernetes-admin@kubernetes
 --> Able to access the default Kubernetes namespace
K10 Kanister tools image
 --> Using Kanister tools image (gcr.io/kasten-images/k10tools:6.5.0) to run test

Running K10Primer Job in cluster with command
     ./k10tools primer 
serviceaccount/k10-primer created
clusterrolebinding.rbac.authorization.k8s.io/k10-primer created
job.batch/k10primer created
Pod k10primer-dng8x is in Pending phase
Pod k10primer-dng8x is in Pending phase
Pod Ready!
================================================================
Kubernetes Version Check:
  Valid kubernetes version (v1.27.3)  -  OK

RBAC Check:
  Kubernetes RBAC is enabled  -  OK

Aggregated Layer Check:
  The Kubernetes Aggregated Layer is enabled  -  OK

CSI Capabilities Check:
  Using CSI GroupVersion snapshot.storage.k8s.io/v1  -  OK

Validating Provisioners: 
hostpath.csi.k8s.io:
  Is a CSI Provisioner  -  OK
  Storage Classes:
    csi-hostpath-sc
      Valid Storage Class  -  OK
  Volume Snapshot Classes:
    csi-hostpath-snapclass
      Has k10.kasten.io/is-snapshot-class annotation set to true  -  OK
      Has deletionPolicy 'Delete'  -  OK

kubernetes.io/no-provisioner:
  Storage Classes:
    default
      Supported via K10 Generic Volume Backup. See https://docs.kasten.io/latest/install/generic.html.
    local-path-kasten
      Supported via K10 Generic Volume Backup. See https://docs.kasten.io/latest/install/generic.html.

Validate Generic Volume Snapshot:
  Pod created successfully  -  OK
  GVS Backup command executed successfully  -  OK
  Pod deleted successfully  -  OK
================================================================
serviceaccount "k10-primer" deleted
clusterrolebinding.rbac.authorization.k8s.io "k10-primer" deleted
job.batch "k10primer" deleted

5 comments

Userlevel 7

+22

Geoff Burke
Veeam Legend, Veeam Vanguard
1227 comments
4 months ago
21 December 2023

I think the issue is that your csi storageclass that supports snapshots is Storage Classes: csi-hostpath-sc but the workload that you are trying to snapshot is using “- name: storageClassName value: local-path-kasten”

If this is k3s then the local-path sc does not support snapshotting. So your application should be using the csi-hostpath-sc and then you should be able to snapshot without issues.

Userlevel 1

andryikoo
Author
New Here
2 comments
4 months ago
21 December 2023

If this is k3s then the local-path sc does not support snapshotting. So your application should be using the csi-hostpath-sc and then you should be able to snapshot without issues.

when i use pod with volume class csi-hostpath-sc i get this error

- cause:
    cause:
      fields:
        - name: pvcName
          value: example-pvc-4
        - name: pvName
          value: example-pv-3
        - name: storageClassName
          value: csi-hostpath-sc
        - name: namespace
          value: it
      file: kasten.io/k10/kio/exec/phases/phase/snapshot.go:243
      function: kasten.io/k10/kio/exec/phases/phase.FetchSnapshotSession
      linenumber: 243
      message: Volume Snapshots are not supported for this storage provider.Try K10's
        Generic Storage Backup
        method(https://docs.kasten.io/latest/install/generic.html?#generic-storage-backup-and-restore)
        or contact contact@kasten.io
    file: kasten.io/k10/kio/exec/phases/backup/snapshot_data_phase.go:148
    function: kasten.io/k10/kio/exec/phases/backup.(*SnapshotDataPhase).Run
    linenumber: 148
    message: Failed to fetch the snapshot session
  message: Job failed to be executed
- cause:
    cause:
      fields:
        - name: pvcName
          value: example-pvc-4
        - name: pvName
          value: example-pv-3
        - name: storageClassName
          value: csi-hostpath-sc
        - name: namespace
          value: it
      file: kasten.io/k10/kio/exec/phases/phase/snapshot.go:243
      function: kasten.io/k10/kio/exec/phases/phase.FetchSnapshotSession
      linenumber: 243
      message: Volume Snapshots are not supported for this storage provider.Try K10's
        Generic Storage Backup
        method(https://docs.kasten.io/latest/install/generic.html?#generic-storage-backup-and-restore)
        or contact contact@kasten.io
    file: kasten.io/k10/kio/exec/phases/backup/snapshot_data_phase.go:148
    function: kasten.io/k10/kio/exec/phases/backup.(*SnapshotDataPhase).Run
    linenumber: 148
    message: Failed to fetch the snapshot session
  message: Job failed to be executed

kubectl get storageclasses csi-hostpath-sc -o json


{
    "allowVolumeExpansion": true,
    "apiVersion": "storage.k8s.io/v1",
    "kind": "StorageClass",
    "metadata": {
        "annotations": {
            "kubectl.kubernetes.io/last-applied-configuration": "{\"allowVolumeExpansion\":true,\"apiVersion\":\"storage.k8s.io/v1\",\"kind\":\"StorageClass\",\"metadata\":{\"annotations\":{},\"name\":\"csi-hostpath-sc\"},\"provisioner\":\"hostpath.csi.k8s.io\",\"reclaimPolicy\":\"Delete\",\"volumeBindingMode\":\"Immediate\"}\n",
            "storageclass.kubernetes.io/is-default-class": "true"
        },
        "creationTimestamp": "2023-11-29T09:29:44Z",
        "name": "csi-hostpath-sc",
        "resourceVersion": "4616421",
        "uid": "d56ed44f-4058-46ee-bf6f-4eada73ad184"
    },
    "provisioner": "hostpath.csi.k8s.io",
    "reclaimPolicy": "Delete",
    "volumeBindingMode": "Immediate"
}

kubectl version:
GitVersion:"v1.27.3"

kubectl get volumesnapshotclass -o json

{
    "apiVersion": "v1",
    "items": [
        {
            "apiVersion": "snapshot.storage.k8s.io/v1",
            "deletionPolicy": "Delete",
            "driver": "hostpath.csi.k8s.io",
            "kind": "VolumeSnapshotClass",
            "metadata": {
                "annotations": {
                    "k10.kasten.io/is-snapshot-class": "true",
                    "kubectl.kubernetes.io/last-applied-configuration": "{\"apiVersion\":\"snapshot.storage.k8s.io/v1\",\"deletionPolicy\":\"Delete\",\"driver\":\"hostpath.csi.k8s.io\",\"kind\":\"VolumeSnapshotClass\",\"metadata\":{\"annotations\":{\"snapshot.storage.kubernetes.io/is-default-class\":\"true\"},\"name\":\"csi-hostpath-snapclass\"},\"parameters\":null}\n",
                    "snapshot.storage.kubernetes.io/is-default-class": "true"
                },
                "creationTimestamp": "2023-11-29T11:11:35Z",
                "generation": 1,
                "name": "csi-hostpath-snapclass",
                "resourceVersion": "9434560",
                "uid": "86bf9b21-2167-4275-9cb7-9d5284f5c57e"
            }
        }
    ],
    "kind": "List",
    "metadata": {
        "resourceVersion": ""
    }
}

Userlevel 7

+22

Geoff Burke
Veeam Legend, Veeam Vanguard
1227 comments
4 months ago
21 December 2023

Can you try creating a snapshot outside of Kasten. https://kubernetes.io/docs/concepts/storage/volume-snapshots/

Userlevel 1

andryikoo
Author
New Here
2 comments
4 months ago
22 December 2023

Can you try creating a snapshot outside of Kasten. https://kubernetes.io/docs/concepts/storage/volume-snapshots/

created without errors

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: csi-pvc
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  storageClassName: csi-hostpath-sc
---- 
apiVersion: snapshot.storage.k8s.io/v1
kind: VolumeSnapshot
metadata:
  name: new-snapshot-demo
spec:
  volumeSnapshotClassName: csi-hostpath-snapclass
  source:
    persistentVolumeClaimName: csi-pvc

kubectl get volumesnapshot

NAME                READYTOUSE   SOURCEPVC   SOURCESNAPSHOTCONTENT   RESTORESIZE   SNAPSHOTCLASS            SNAPSHOTCONTENT                                    CREATIONTIME   AGE
new-snapshot-demo   true         csi-pvc                             1Gi           csi-hostpath-snapclass   snapcontent-3525a074-fad5-4ef8-bef3-1504cc65604e   2m15s          4m16s

Hello,

A CSI driver that has Volume Snapshot support. Please look at the list of CSI drivers to confirm snapshot support.

Thank you,

Haythem

Comment

Sign up

Login to the community

Scanning file for viruses.

This file cannot be downloaded