remove ceph code

[stor4nfv.git] / src / ceph / doc / rados / operations / pg-states.rst

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-========================
- Placement Group States
-========================
-
-When checking a cluster's status (e.g., running ``ceph -w`` or ``ceph -s``), 
-Ceph will report on the status of the placement groups. A placement group has 
-one or more states. The optimum state for placement groups in the placement group
-map is ``active + clean``. 
-
-*Creating*
-  Ceph is still creating the placement group.
-
-*Active*
-  Ceph will process requests to the placement group.
-
-*Clean*
-  Ceph replicated all objects in the placement group the correct number of times.
-
-*Down*
-  A replica with necessary data is down, so the placement group is offline.
-
-*Scrubbing*
-  Ceph is checking the placement group for inconsistencies.
-
-*Degraded*
-  Ceph has not replicated some objects in the placement group the correct number of times yet.
-
-*Inconsistent*
-  Ceph detects inconsistencies in the one or more replicas of an object in the placement group
-  (e.g. objects are the wrong size, objects are missing from one replica *after* recovery finished, etc.).
-
-*Peering*
-  The placement group is undergoing the peering process
-
-*Repair*
-  Ceph is checking the placement group and repairing any inconsistencies it finds (if possible).
-
-*Recovering*
-  Ceph is migrating/synchronizing objects and their replicas.
-
-*Forced-Recovery*
-  High recovery priority of that PG is enforced by user.
-
-*Backfill*
-  Ceph is scanning and synchronizing the entire contents of a placement group
-  instead of inferring what contents need to be synchronized from the logs of
-  recent operations. *Backfill* is a special case of recovery.
-
-*Forced-Backfill*
-  High backfill priority of that PG is enforced by user.
-
-*Wait-backfill*
-  The placement group is waiting in line to start backfill.
-
-*Backfill-toofull*
-  A backfill operation is waiting because the destination OSD is over its
-  full ratio.
-
-*Incomplete*
-  Ceph detects that a placement group is missing information about
-  writes that may have occurred, or does not have any healthy
-  copies. If you see this state, try to start any failed OSDs that may
-  contain the needed information. In the case of an erasure coded pool
-  temporarily reducing min_size may allow recovery.
-
-*Stale*
-  The placement group is in an unknown state - the monitors have not received
-  an update for it since the placement group mapping changed.
-
-*Remapped*
-  The placement group is temporarily mapped to a different set of OSDs from what
-  CRUSH specified.
-
-*Undersized*
-  The placement group fewer copies than the configured pool replication level.
-
-*Peered*
-  The placement group has peered, but cannot serve client IO due to not having
-  enough copies to reach the pool's configured min_size parameter.  Recovery
-  may occur in this state, so the pg may heal up to min_size eventually.