Answering my own question (getting help from Pavan), I see that all the details are in this PR: https://github.com/ceph/ceph/pull/11051 So, the zone was updated to set metadata_heap: "" with $ radosgw-admin zone get --rgw-zone=default > zone.json [edit zone.json] $ radosgw-admin zone set --rgw-zone=default --infile=zone.json and now I can safely remove the default.rgw.meta pool. -- Dan On Tue, Mar 12, 2019 at 3:17 PM Dan van der Ster <dan@xxxxxxxxxxxxxx> wrote: > > Hi all, > > We have an S3 cluster with >10 million objects in default.rgw.meta. > > # radosgw-admin zone get | jq .metadata_heap > "default.rgw.meta" > > In these old tickets I realized that this setting is obsolete, and > those objects are probably useless: > http://tracker.ceph.com/issues/17256 > http://tracker.ceph.com/issues/18174 > > We will clear the metadata_heap setting in the zone json, but then can > we simply `rados rm` all the objects in the default.rgw.meta pool? > > The objects seem to come in three flavours: > > .meta:user:dvanders:_KpWMw94jrX75PgAfhDymKTo:2 > .meta:bucket:atlas-eventservice:_byPmpJS9V9l7DULEVxlDC2A:1 > .meta:bucket.instance:atlas-eventservice:61c59385-085d-4caa-9070-63a3868dccb6.3191998.599860:_PQCKPJVTzvtwgU41Dw0Cdx6:1 > > Cheers, Dan _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com