Hi, what is the proper method to not only setup but also successfully use CephFS on erasure coded data pool? The docs[1] very vaguely state that erasure coded pools do not support omap operations hence, "For Cephfs, using an erasure coded pool means setting that pool in a file layout.". The file layout docs says nothing further about this [2]. (I filed a bug[3].) I'm guessing this translates to something along the lines of: ceph fs new cephfs cephfs_metadata cephfs_replicated_data ceph fs add_data_pool cephfs cephfs_ec_data And then, setfattr -n ceph.dir.layout.SOMETHING -v cephfs_ec_data $cephfs_dir To achieve the inheritance of all files under $cephfs_dir to use the erasure coded pool afterwards. Am I on the right track here? /M 1. http://docs.ceph.com/docs/master/rados/operations/erasure-code/ 2. http://docs.ceph.com/docs/master/cephfs/file-layouts/ 3. http://tracker.ceph.com/issues/21174
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