Backup Rook on PVCs (Block VolumeMode)

[MarkusNowotny]

Hi,

I've setup up Rook on PVC in Block VolumeMode and Stash Community Edition.
I'd like to backup the PVCs that are used by Rook osd.
Is it even possible to backup and restore PVCs in Block VolumeMode?

This is my working configuration to backup an osd PVC from Rook.

apiVersion: stash.appscode.com/v1beta1
kind: BackupConfiguration
metadata:
  name: rook-ceph-osd-0-backup
  namespace: rook-ceph
spec:
  driver: Restic
  paused: true
  repository:
    name: s3-repo
  retentionPolicy:
    keepLast: 5
    name: keep-last-5-3
    prune: true
  runtimeSettings:
    container:
      securityContext:
        runAsUser: 0
  schedule: '*/5 * * * *'
  target:
    paths:
    - /source/data
    ref:
      apiVersion: apps/v1
      kind: Deployment
      name: rook-ceph-osd-0
    volumeMounts:
    - mountPath: /source/data
      name: set1-data-1bzgdq-bridge
      subPath: ceph-0

This is my restore session which is not working

apiVersion: stash.appscode.com/v1beta1
kind: RestoreSession
metadata:
  name: deployment-restore
  namespace: rook-ceph
spec:
  driver: Restic
  repository:
    name: s3-repo
  runtimeSettings: {}
  target:
    ref:
      apiVersion: apps/v1
      kind: Deployment
      name: rook-ceph-osd-0
    rules:
    - paths:
      - /source/data/
    volumeMounts:
    - mountPath: /source/data
      name: set1-data-1bzgdq-bridge
      subPath: ceph-0
  task: {}
  tempDir: {}

The stash-init container shows an error. See the attached log file for the error
rook-ceph-osd-0-557656658b-rfqt2_stash-init.log

I'm confused by the error. Is the pod not starting because the /source/data/block file exists or because of the thrown error.

Maybe one of you can help me to solve this problem.

Thanks

[hossainemruz]

Since, you are running the backup as root user, you have to run RestoreSession as root user too. Use the same runtimeSettings as the BackupConfiguration in the RestoreSession.

[MarkusNowotny]

I've changed the securityContext in the RestoreSession but it is not working
rook-ceph-osd-0-744fb7486b-rrh6z_stash-init.log