[ceph-users] rbd-mirror ceph quincy Not able to find rbd_mirror_journal_max_fetch_bytes config in rbd mirror

Hello All, In the ceph quincy Not able to find rbd_mirror_journal_max_fetch_bytes config in rbd mirror i configured the ceph cluster almost 400 tb and enable the rbd-mirror in the starting stage i'm able to achive the almost 9 GB speed , but after the rebalane completed of the all the images . rbd-mirror speed got automaticily reduce to between 4 to 5 mbps. in my primary cluster we are continuelsy writing the 50 to 400 mbps data but replication speed only we get the 4 to 5 mbps. also we have the 10 Gbps replication network bandwidth. Note::- I also try to find the option rbd_mirror_journal_max_fetch_bytes but i'm not able to find the this option in the configuration. also when i try to set from the command line it's showing error like command: ceph config set client.rbd rbd_mirror_journal_max_fetch_bytes 33554432 error: Error EINVAL: unrecognized config option 'rbd_mirror_journal_max_fetch_bytes' cluster version ceph version 17.2.5 (98318ae89f1a893a6ded3a640405cdbb33e08757) quincy (stable) Please suggest any alternative way to configurre this option or how i can improve the replication n/w speed.