Description of problem (please be detailed as possible and provide log
snippests):
Mirroring between clusters with MCG is not working.

Version of all relevant components (if applicable): odf-operator.v4.12.0

Does this issue impact your ability to continue to work with the product
(please explain in detail what is the user impact)?
Yes, the mirroring is needed for a partner use case.

Is there any workaround available to the best of your knowledge?
No

Rate from 1 - 5 the complexity of the scenario you performed that caused this
bug (1 - very simple, 5 - very complex)?
2

Can this issue reproducible?
Yes

Can this issue reproduce from the UI?
Yes

Steps to Reproduce:
1. Configure a BackingStore with an S3 storage endpoint from another cluster:
apiVersion: noobaa.io/v1alpha1
kind: BackingStore
metadata:
finalizers:

• noobaa.io/finalizer
  labels:
  app: noobaa
  name: bs-staging01
  namespace: openshift-storage
  spec:
  s3Compatible:
  endpoint: http://s3-openshift-storage.apps.staging01.esmb.bos2.lab
  secret:
  name: backingstore-staging-secret
  namespace: openshift-storage
  signatureVersion: v4
  targetBucket: oadp-bucket-1a0b629c-b9d4-451c-b073-012f6e701f5d
  type: s3-compatible

$ oc get backingstore -A
NAMESPACE NAME TYPE PHASE AGE
openshift-storage bs-staging s3-compatible Ready 3h26m
openshift-storage noobaa-default-backing-store s3-compatible Ready 3d17h

2. Configure a BucketClass with a mirroring policy:
apiVersion: noobaa.io/v1alpha1
kind: BucketClass
metadata:
labels:
app: noobaa
name: bucket-class-test
namespace: openshift-storage
spec:
placementPolicy:
tiers:

• backingStores:
• noobaa-default-backing-store
• bs-staging
  placement: Mirror

$ oc get bucketclass -A
NAMESPACE NAME PLACEMENT NAMESPACEPOLICY QUOTA PHASE AGE
openshift-storage bucket-class-test {"tiers":[

{"backingStores":["noobaa-default-backing-store","bs-staging"],"placement":"Mirror"}

]} Ready 169m
openshift-storage noobaa-default-bucket-class {"tiers":[

{"backingStores":["noobaa-default-backing-store"]}

]}

3. Add the following lines to the ObjectBucketClaim:
spec:
additionalConfig:
bucketclass: bucket-class-test

Actual results:
The mirroring is not done and Noobaa log showing:
Feb-27 11:22:08.536 [BGWorkers/37] [L0] core.server.bg_services.mirror_writer:: no buckets with mirror policy. nothing to do

Expected results:
The mirroring should be done.

Additional info:
Followed this doc to do the configuration: https://access.redhat.com/documentation/en-us/red_hat_openshift_data_foundation/4.12/html/managing_hybrid_and_multicloud_resources/mirroring-data-for-hybrid-and-multicloud-buckets