Hi all, I'm deploying Squid. I configure a first cephfs setup using k=6 and m=8 but this was a bad idea for my 5 nodes cluster. So I try to roll back and build a k=5 and m=3. But it remains some occurrences of my old setup when allowing cephfs clients and I do not understand how to remove them. My previous status was: # ceph osd pool ls .mgr ec-62-pool cephfs.data-ec62-vol.meta cephfs.data-ec62-vol.data to remove it I ran: # ceph fs fail data-ec62-vol # ceph fs rm data-ec62-vol --yes-i-really-mean-it # ceph config set mon mon_allow_pool_delete true # ceph osd pool delete ec-62-pool ec-62-pool --yes-i-really-really-mean-it # ceph osd pool delete cephfs.data-ec62-vol.data cephfs.data-ec62-vol.data --yes-i-really-really-mean-it # ceph osd pool delete cephfs.data-ec62-vol.meta cephfs.data-ec62-vol.meta --yes-i-really-really-mean-it # ceph config set mon mon_allow_pool_delete false # ceph osd pool ls .mgr I then remove my erasure code profile: # ceph osd erasure-code-profile ls default ec-62-profile-isa # ceph osd erasure-code-profile rm ec-62-profile-isa # ceph osd erasure-code-profile ls default And the corresponding crush rule: # ceph osd crush rule ls replicated_rule ec-62-pool # ceph osd crush rule rm ec-62-pool Then I create my new config: # ceph osd erasure-code-profile set ec-53-profile-isa k=5 m=3 crush-failure-domain=host plugin=isa # ceph osd erasure-code-profile ls default ec-53-profile-isa # ceph osd pool create ec-53-pool erasure ec-53-profile-isa pool 'ec-53-pool' created # ceph osd pool set ec-53-pool allow_ec_overwrites true set pool 5 allow_ec_overwrites to true # ceph fs volume create data # ceph fs add_data_pool data ec-53-pool Last I create a folder in this fs and set it to the erasure coding pool: # ceph-fuse /mnt # cd /mnt # mkdir data # setfattr -n ceph.dir.layout.pool -v ec-53-pool /mnt/data But when I want to create the new Key for the clients with: # ceph fs authorize data client.whitaker / r root_squash /data rw This still rely on the old data-ec62-vol setup: [client.whitaker] key = XXXXXXXXXXXXXXXXXXXXXXXXXXXXX== caps mds = "allow r fsname=data-ec62-vol, allow rw fsname=data-ec62-vol path=data, allow r fsname=data root_squash, allow rw fsname=data path=data" caps mon = "allow r fsname=data-ec62-vol, allow r fsname=data" caps osd = "allow rw tag cephfs data=data-ec62-vol, allow rw tag cephfs data=data" And "ceph auth ls" show several remaining occurrences for the old data-ec62-vol setup: mds.data-ec62-vol.whitaker02-ceph.jbqyuh key: XXXXXXXXXXXXXXXXXXXXXXXXXXXXX== caps: [mds] allow caps: [mon] profile mds caps: [osd] allow rw tag cephfs *=* mds.data-ec62-vol.whitaker03-ceph.qtaqtn key: XXXXXXXXXXXXXXXXXXXXXXXXXXXXX== caps: [mds] allow caps: [mon] profile mds caps: [osd] allow rw tag cephfs *=* client.whitaker key: XXXXXXXXXXXXXXXXXXXXXXXXXXXXX== caps: [mds] allow r fsname=data-ec62-vol, allow rw fsname=data-ec62-vol path=data, allow r fsname=data root_squash, allow rw fsname=data path=data caps: [mon] allow r fsname=data-ec62-vol, allow r fsname=data caps: [osd] allow rw tag cephfs data=data-ec62-vol, allow rw tag cephfs data=data How can I build a correct setup for these keys ? Thank Patrick