On 2020-09-08 19:30, norman kern wrote: > Hi, > > I have changed most of pools from 3-replica to ec 4+2 in my cluster, > when I use ceph df command to show > > the used capactiy of the cluster: > [...] > > The USED = 3 * STORED in 3-replica mode is completely right, but for EC > 4+2 pool (for default-fs-data0 ) > > the USED is not equal 1.5 * STORED, why...:( > > When I compare our two Nautilus clusters, one is reporting more or less what would one expect for triple replicated and EC4+2 pool numbers, while the other cluster reports this: POOL ID STORED OBJECTS USED %USED MAX AVAIL rbd-metadata 6 136 MiB 674 136 MiB 0 10 TiB rbd-data 7 1.2 PiB 324.83M 1.2 PiB 45.99 964 TiB rbd-data pool is EC4+2 rbd-metadata is triple replication. rbd du shows: NAME PROVISIONED USED [...] <TOTAL> 2.1 PiB 1.2 PiB It is hard to know what the cluster space usage is and how much free space is actually available. Milan -- Milan Kupcevic Senior Cyberinfrastructure Engineer at Project NESE Harvard University FAS Research Computing _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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