flex-to-csi-migration.md

title	weight	indent
Migration	4100	true

Flex to CSI Migration

The tool persistent-volume-migrator aims to help migrate Flex rbd Volumes to Ceph-Csi.

Prerquisite

This guide assumes you have created a Rook cluster with Flex

1. Minimum ceph version should be Ceph-CSI supported.
2. Volume should be in BOUND state and should not be in use.

NOTE: The Migration procedure will come with a downtime; As we need to scale down the applications using the Volumes before migration.

Steps

1. Create rbac required to run migrator pod
   1. kubectl create -f cluster/examples/kubernetes/ceph/flex-migration/rbac.yaml
2. Create migrator pod
   1. kubectl create -f cluster/examples/kubernetes/ceph/flex-migration/migrator.yaml
3. Run command to start migration:
   1. To migrate single PVC:
      1. <binary_name> --pvc=rbd-pvc --pvc-namespace=default --destinationstorageclass=csi-rook-ceph-block
         1. --pvc reads name of the pvc to migrate
         2. --pvc-namespace reads the namespace of the PVC which is going to migrate
         3. --destinationstorageclass read the name of the storageclass in which you want mirgrate.
   2. To mirage all the pvc in storageclass:
      1. WIP