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Resolution: Done
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Undefined
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4
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False
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Description of problem:
Using OADP 1.1 on OCP 4.11, I created a PVC that was provisioned using the ODF LVM CSI driver:
$ oc get pvc toolbox-container-home -o yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
annotations:
pv.kubernetes.io/bind-completed: "yes"
pv.kubernetes.io/bound-by-controller: "yes"
volume.beta.kubernetes.io/storage-provisioner: topolvm.cybozu.com
volume.kubernetes.io/selected-node: master1
volume.kubernetes.io/storage-provisioner: topolvm.cybozu.com
creationTimestamp: "2022-09-15T15:36:24Z"
finalizers:
- kubernetes.io/pvc-protection
name: toolbox-container-home
namespace: test-volume
resourceVersion: "10658302"
uid: ac618f12-b6a5-46ad-ba96-cb5613b9dd7e
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1G
storageClassName: odf-lvm-loop1-vg
volumeMode: Filesystem
volumeName: pvc-ac618f12-b6a5-46ad-ba96-cb5613b9dd7e
status:
accessModes:
- ReadWriteOnce
capacity:
storage: 1Gi
phase: Bound
I used OADP to back up the PVC and restore it:
$ velero backup create --from-schedule test-volume --wait $ velero create restore --from-backup test-volume-20220914003129 --wait
After the restore operation completes, the PVC object looks like this:
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
annotations:
pv.kubernetes.io/bind-completed: "yes"
pv.kubernetes.io/bound-by-controller: "yes"
velero.io/backup-name: test-volume-20220914003129
velero.io/volume-snapshot-name: velero-toolbox-container-home-vf52g
volume.kubernetes.io/selected-node: master1
volume.kubernetes.io/storage-provisioner: topolvm.cybozu.com
creationTimestamp: "2022-09-15T01:43:47Z"
finalizers:
- kubernetes.io/pvc-protection
labels:
velero.io/backup-name: test-volume-20220914003129
velero.io/restore-name: test-volume-20220914003129-20220914184324
velero.io/volume-snapshot-name: velero-toolbox-container-home-vf52g
name: toolbox-container-home
namespace: test-volume
resourceVersion: "10590150"
uid: d29cdc38-5c09-4243-b10c-eed0083332d4
spec:
accessModes:
- ReadWriteOnce
dataSource:
apiGroup: snapshot.storage.k8s.io
kind: VolumeSnapshot
name: velero-toolbox-container-home-vf52g
dataSourceRef:
apiGroup: snapshot.storage.k8s.io
kind: VolumeSnapshot
name: velero-toolbox-container-home-vf52g
resources:
requests:
storage: 1G
storageClassName: odf-lvm-loop1-vg
volumeMode: Filesystem
volumeName: pvc-d29cdc38-5c09-4243-b10c-eed0083332d4
status:
accessModes:
- ReadWriteOnce
capacity:
storage: 1Gi
phase: Bound
Note that the dataSource and dataSourceRef fields in the above object both point to the VolumeSnapshot velero-toolbox-container-home-vf52g.
Next, I create another backup of this PVC and try to restore it:
$ velero backup create --from-schedule test-volume --wait $ velero create restore --from-backup test-volume-20220914004727 --wait
This time the restore operation fails.
$ velero restore describe test-volume-20220914004727-20220914151512
...
Errors:
Velero: <none>
Cluster: <none>
Namespaces:
test-volume: error restoring persistentvolumeclaims/test-volume/toolbox-container-home: PersistentVolumeClaim "toolbox-container-home" is invalid: spec: Invalid value: field.Path{name:"dataSource", index:"", parent:(*field.Path)(0xc07cac41e0)}: must match dataSourceRef
...
During the PVC restore operation, Velero made the following API call that failed:
{
"kind": "Event",
"apiVersion": "audit.k8s.io/v1",
"level": "RequestResponse",
"auditID": "037e9c67-7bf7-4169-8689-109124eda44c",
"stage": "ResponseComplete",
"requestURI": "/api/v1/namespaces/test-volume/persistentvolumeclaims",
"verb": "create",
"user": {
"username": "system:serviceaccount:openshift-adp:velero",
"uid": "1fd41968-4739-4e85-9b55-896272960be7",
"groups": [
"system:serviceaccounts",
"system:serviceaccounts:openshift-adp",
"system:authenticated"
],
"extra": {
"authentication.kubernetes.io/pod-name": [
"velero-6898bff594-gjlrm"
],
"authentication.kubernetes.io/pod-uid": [
"4cd639aa-4b96-4992-b8f3-c8ff0f16ffbb"
]
}
},
"sourceIPs": [
"10.128.1.11"
],
"userAgent": "velero-server/v1.9.0-OADP (linux/amd64) -",
"objectRef": {
"resource": "persistentvolumeclaims",
"namespace": "test-volume",
"name": "toolbox-container-home",
"apiVersion": "v1"
},
"responseStatus": {
"metadata": {},
"status": "Failure",
"message": "PersistentVolumeClaim \"toolbox-container-home\" is invalid: spec: Invalid value: field.Path{name:\"dataSource\", index:\"\", parent:(*field.Path)(0xc037964390)}: must match dataSourceRef",
"reason": "Invalid",
"details": {
"name": "toolbox-container-home",
"kind": "PersistentVolumeClaim",
"causes": [
{
"reason": "FieldValueInvalid",
"message": "Invalid value: field.Path{name:\"dataSource\", index:\"\", parent:(*field.Path)(0xc037964390)}: must match dataSourceRef",
"field": "spec"
}
]
},
"code": 422
},
"requestObject": {
"kind": "PersistentVolumeClaim",
"apiVersion": "v1",
"metadata": {
"name": "toolbox-container-home",
"namespace": "test-volume",
"creationTimestamp": null,
"labels": {
"velero.io/backup-name": "test-volume-20220914004727",
"velero.io/restore-name": "test-volume-20220914004727-20220914174140",
"velero.io/volume-snapshot-name": "velero-toolbox-container-home-42d9p"
},
"annotations": {
"kubectl.kubernetes.io/last-applied-configuration": "{\"apiVersion\":\"v1\",\"kind\":\"PersistentVolumeClaim\",\"metadata\":{\"annotations\":{},\"name\":\"toolbox-container-home\",\"namespace\":\"test-volume\"},\"spec\":{\"accessModes\":[\"ReadWriteOnce\"],\"resources\":{\"requests\":{\"storage\":\"1G\"}}}}\n",
"velero.io/backup-name": "test-volume-20220914004727",
"velero.io/volume-snapshot-name": "velero-toolbox-container-home-42d9p",
"volume.kubernetes.io/storage-provisioner": "topolvm.cybozu.com"
}
},
"spec": {
"accessModes": [
"ReadWriteOnce"
],
"resources": {
"requests": {
"storage": "1Gi"
}
},
"storageClassName": "odf-lvm-loop1-vg",
"volumeMode": "Filesystem",
"dataSource": {
"apiGroup": "snapshot.storage.k8s.io",
"kind": "VolumeSnapshot",
"name": "velero-toolbox-container-home-42d9p"
},
"dataSourceRef": {
"apiGroup": "snapshot.storage.k8s.io",
"kind": "VolumeSnapshot",
"name": "velero-toolbox-container-home-vf52g"
}
},
"status": {
"phase": "Pending"
}
},
"responseObject": {
"kind": "Status",
"apiVersion": "v1",
"metadata": {},
"status": "Failure",
"message": "PersistentVolumeClaim \"toolbox-container-home\" is invalid: spec: Invalid value: field.Path{name:\"dataSource\", index:\"\", parent:(*field.Path)(0xc037964390)}: must match dataSourceRef",
"reason": "Invalid",
"details": {
"name": "toolbox-container-home",
"kind": "PersistentVolumeClaim",
"causes": [
{
"reason": "FieldValueInvalid",
"message": "Invalid value: field.Path{name:\"dataSource\", index:\"\", parent:(*field.Path)(0xc037964390)}: must match dataSourceRef",
"field": "spec"
}
]
},
"code": 422
},
"requestReceivedTimestamp": "2022-09-15T00:42:03.895874Z",
"stageTimestamp": "2022-09-15T00:42:03.918537Z",
"annotations": {
"authorization.k8s.io/decision": "allow",
"authorization.k8s.io/reason": "RBAC: allowed by ClusterRoleBinding \"oadp-operator.v1.1.0-7668f46dbc\" of ClusterRole \"oadp-operator.v1.1.0-7668f46dbc\" to ServiceAccount \"velero/openshift-adp\""
}
}
The problem is probably in the Velero CSI plugin, in the resetPVCSpec method here
This method resets only the dataSource field but leaves the dataSourceRef unchanged. The method should probably reset both the dataSource and dataSourceRef fields.
