ImportVol not working for additional backend in kubernetes

[virendra-sharma]

Unable to importVol from additional backend in kubernetes 1.13 setup. getting doryd error log as below.

Error log of doryd

7:19:04 provisioner.go:237: statusLogger: provision chains=0, delete chains=0, parked chains=0, ids tracked=0, connection=valid
07:19:05 class.go:75: unable to find a class named
07:19:05 claim.go:77: error getting class named  for pvc pvc-importvol. err=unable to find a class named

Steps performed

1. created volume (Test_vol) in 3PAR1 array.
2. Created pv, pvc with below yml files.
3. observed volume not imported.

container logs

container_logs.txt

YAML's

importvol_pv.yml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: pv-import-volume
spec:
    capacity:
      storage: 35Gi
    accessModes:
    - ReadWriteOnce
    flexVolume:
      driver: hpe.com/hpe
      options:
        name: "IMPORTED-VOLUME"
        importVol: "Test_vol"
        backend: "3PAR1"

importvol_pvc.yml

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: pvc-importvol
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 35Gi

Note:- Able to import same volume through docker command. (docker volume create -d hpe --name imported_vol -o importVol=Test_vol -o backend=3PAR1).

[nilangekarss]

Can you also put the container logs for the same?

[virendra-sharma]

container_logs.txt
Please find attached container_logs.

[wdurairaj]

@virendra-sharma , I did some experimentation on this one. Seems like in static provisioning only when you do a pod mount referencing a pvc claim, then the volume is created..

Can you try creating a pod like this

sudo kubectl create -f - << EOF
---
apiVersion: v1
kind: Pod
metadata:
  name: pod1
spec:
  containers:
  - name: nginx
    image: nginx
    volumeMounts:
    - name: export
      mountPath: /export
  restartPolicy: Always
  volumes:
  - name: export
    persistentVolumeClaim:
      claimName: pvc-importvol
EOF

[wdurairaj]

After the above pod creation, docker volume ls would list the volume IMPORTED-VOLUME

[virendra-sharma]

@wdurairaj I have followed steps given by you. pod came in running status and post that "docker volume ls" showed "IMPORTED-VOLUME" created.

[wdurairaj]

@virendra-sharma, as per your previous update, can i close this issue ?

[virendra-sharma]

@wdurairaj I have observed on some of setup static volume get created before pod, so it will be good if you suggest one specific condition for it.

[wdurairaj]

@virendra-sharma , until you confirm if this problem exists in some other environments as per your last comment, I have to downgrade the priority to "medium", since there is a solution to the issue and no more it can be a blocker.

[prablr79]

moved to 3.2 release

[prablr79]

moved to 3.2.1 Release., this need further investigation