incomplete state
The Ceph cluster has recognized that a placement group (PG) is missing important information. This may be missing information on any write operations that have occurred or that there are no error-free copies.
The recommendation is to bring all OSDs that are in the down or out state back into the Ceph cluster, as these could contain the required information. In the case of an Ereasure Coding (EC) pool, the temporary reduction of the min_size can enable recovery. However, the min_size cannot be smaller than the number of defined data shunks for this pool.
Sources
https://docs.ceph.com/docs/master/rados/operations/pg-states/ https://docs.ceph.com/docs/master/rados/operations/erasure-code/