Hi Eugen Thanks for the reply. Ceph Version:# ceph versionceph version 14.2.11 (f7fdb2f52131f54b891a2ec99d8205561242cdaf) nautilus (stable) > Can you share > > rados list-inconsistent-obj 2.44 ># rados list-inconsistent-obj 2.44 {"epoch":6996,"inconsistents":[]} > ceph tell mds.<MDS> damage ls > # ceph tell mds.a damage ls 2021-05-22 13:23:34.135 80bf25c00 0 client.4344312 ms_handle_reset on v2:192.168.1.130:6810/3532878906 2021-05-22 13:23:34.146 80dcc2500 0 client.4344318 ms_handle_reset on v2:192.168.1.130:6810/3532878906 Error EINVAL: MDS not active > The pool size is 3, right? > Yes, pool size is 3. Above Ceph error messages shows "fs cephfs mds.0 is damaged". My MDS are named a,b and c. Does mds.0 means mds.a? Since I have 2 MDS not damaged, how do I recover and mount the CephFS? Btw, our home directories are on CephFS, at the moment, no one can log in. Sagara _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx