Description of problem:

While running DataMover over CephFS with diff PV sizes & Usage

(NS1: 100 PVs 6G  size, usage 2G , NS2: 1 PV 1000G size , usage 500G). Backup completed OK. 
During restore, PVCs & PODs were in 'Pending' status.
NS1 - 100PVs, took 30-45min till all PVs were created and status changed to 'Bound' & 'Running'.
NS2 - 1 PV (1T), PVC & POD were in 'Pending' status and the PV was not created (even after 10hrs)

Version-Release number of selected component (if applicable):

OCP 4.12.9

ODF 4.12.3
OADP 1.2.0-78
Using CephFS

How reproducible:

Steps to Reproduce:
1. Create NS1 - 100pods , PV size 6G, 2G usage
2. Create NS2 - 1pod, PV size 1000G, 500G usage
3. Backup NS1 
4. Backup NS2 

(sequential backups)
5. Delete NS1 & NS2, run cleanup of: vs, vsc, vsb
6. Restore NS1

7. Monior restore NS1 ( Check pods, PVC, PVs, vs, vsc)
8. Restore NS2

9. Monior restore NS2 ( Check pods, PVC, PVs, vs, vsc)

(sequential restores)

Actual results:

NS1 - All PVs were created after 30-40min

NS2 - PV was not created (even after 10hrs)

Expected results:

All PVs should be created in a few minutes 

Same restore cases using cephRBD - PVs created within 2min

Additional info:

Pods status
[root@f01-h07-000-r640 20230525_143028]# grep 100pods-72 dm_restore-fs-100pods-status.txt
busy-data-fs-100pods-72-cc9b95d55-crvr2    1/1     Running   0          33m

PVC status

[root@f01-h07-000-r640 20230525_143028]# grep pvc-busy-data-fs-100pods-72 dm_restore-fs-100pods-pvc-time.txt
perf-busy-data-cephfs-100pods         pvc-busy-data-fs-100pods-72              Bound     pvc-85e96622-a4cf-4bea-8caf-a34fb00eed6c   6Gi        RWO            ocs-storagecluster-cephfs     32m

PVs status

[root@f01-h07-000-r640 20230525_143028]# grep pvc-busy-data-fs-100pods-72 dm_restore-fs-100pods-pv-time.txt
pvc-85e96622-a4cf-4bea-8caf-a34fb00eed6c   6Gi        RWO            Delete           Bound    perf-busy-data-cephfs-100pods/pvc-busy-data-fs-100pods-72           ocs-storagecluster-cephfs              2m18s