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How to create a new pool with EC4+2 on hdd
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ceph osd pool create <poolname> 32 32 erasure profile-4-2-hdd
ceph osd pool set <poolname> crush_rule ecrule-4-2-hdd
ceph osd pool set <poolname> allow_ec_overwrites true |
Create the metadata pool in replica3:
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ceph osd pool create metadata-<poolname> 32 32
ceph osd pool set metadata-<poolname> crush_rule replicated_hdd |
How to create a pool in replica 3 which uses a specific device class
[root@ceph-mon-01 ~]# ceph osd pool get testfs crush_rule
crush_rule: replicated_hdd-cephfs
Assumo che ci siano gia' degli OSD che sono stati messi nella device class hdd-cephfs (v.
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Creo la crush rule:
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[root@ceph-mon-01 ~]# ceph osd crush rule create-replicated replicated_hdd-cephfs default host hdd-cephfs |
Creo poi un pool che usi questa crush rule:
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[root@ceph-mon-01 ~]# ceph osd pool create testfs 32 32 replicated replicated_hdd-cephfs |
Verifico:
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[root@ceph-mon-01 ~]# ceph osd pool get testfs crush_rule crush_rule: replicated_hdd-cephfs |