Hello, all I hava a Ceph cluster of Hammer 0.94.5, 3 Hosts and the cluster is 3 MONs and 8 OSDs for each host. When test the date recover and backfill of EC pool (K=2, M=1), each chunk for one host, I have an issue of the PG state. When the Ceph cluster state change activate+clean by “ceph -s”, I reboot one host of the cluster, some PGs will go down and find some data’s chunk is missing. From the PG map, I find the 3 PGs(1 pg_temp and 2 pgs) only map to two hosts. Does anyone know the pg_temp is still exist when the cluster state changes to activate+clean? And explain when and how does the pg_temp disappear?
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