ceph-acting-set · shipping · also Ceph acting set

Acting set (Ceph)

In Ceph, the acting set is the ordered OSD list responsible for a placement group at a particular map epoch.

Related Observatory article: Acting set (Ceph) on hesela.com

It normally matches the up set but can be overridden through PG temp. Membership is not proof that every member has the latest contents. [1]

Relations

related

placement-group, ceph-up-set, ceph-peering

Citations

1. Ceph Squid developer documentation: Peering, concepts (accessed 2026-10-13)
2. Storage availability and correlated failures: placement boundaries (accessed 2026-10-13)

JSON: /data/terms/ceph-acting-set.json