Hi, It looks like Igor is right, it does appear to be a corruption. ls /var/lib/ceph/252fcf9a-b169-11ed-87be-3cecef623f33/osd.665/ ceph_fsid config fsid keyring ready require_osd_release type unit.configured unit.created unit.image unit.meta unit.poststop unit.run unit.stop whoami head -c 4096 /dev/ceph-febad5a5-ba44-41aa-a39e-b9897f757752/osd-block-87e548f4-b9b5-4ed8-aca8-de703a341a50 | hexdump -C 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00001000 What could have caused this to happen? The ceph-bluestore-tool isn’t able to repair it. Do I need to remove the OSD and create a new one? Thanks, Alison _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx