Dear Ceph folks,

I am testing the use of EC pool as data pool together with 3 way replicated SSD 
pool as CephFS metadata pool, on Nautilus 14.2.22. And the got the following 
messages:

[root@horeb34 ceph-bin]# ceph fs new cephfs  cephfs-meta ceph-data
Error EINVAL: pool 'ceph-data' (id '24') is an erasure-coded pool. Use of an EC 
pool for the default data pool is discouraged; see the online CephFS 
documentation for more information. Use --force to override.
[root@horeb34 ceph-bin]# ceph fs new cephfs  cephfs-meta ceph-data --force

"Use of an EC pool for the default data pool is discouraged" makes me 
worrysome. what could be wrong with the use of  EC pool for the default data 
pool of CephFS? any best practice related to EC pool ?

best regards,


Samuel





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