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A questo punto devo creare le top level directory. Configuro una macchina di servizio come client (vedi How to mount a ceph file system) e li' monto l'intero filesystem usando il client allfs. Quindi il comando di mount sara' qualcosa tipo: 



Code Block
mkdir /cephfs

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mount -t ceph allfs@.cephfs=/ /cephfs -o mon_addr=10.70.42.10:6789/10.70.42.9:6789/10.70.42.8:6789,secretfile=/etc/ceph/cephfs.allfs.secret



A questi punto creo le top level directory e poi posso fare l'umount:

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Code Block
mkdir /cephfs/terabithome

mkdir /cephfs/slurmctrlslurmct




umount /cephfs



Il file /etc/ceph/ceph.client.xyz.keyring serviranno poi nei nodi dove si monta la top level directory xyz

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