Ceph PG backfill full warning
Some Ceph placement groups are located on full Object Storage Daemon on cluster. Those PGs can be unavailable shortly. Please check OSDs, change weight or reconfigure CRUSH rules.
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> 0
The query checks the metric ceph_pg_backfill_toofull and fires when its value is greater than zero, meaning at least one placement group is trying to backfill to an OSD that has reached its full capacity. The alert triggers whenever any PG is blocked by a full OSD, indicating potential unavailability.
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