Hi, following instructions work fine with 3.1.5-1 but with 3.1.6-1. 1. make a new file system without peers. [OK] foo-1-private# gluster volume create foo foo-1-private:/mnt/brick foo-1-private# gluster volume start foo foo-1-private# gluster peer status No peers present foo-1-private# 2. add a peer to the file system. [NG] foo-1-private# gluster peer probe foo-2-private Probe successful foo-1-private# gluster peer status Number of Peers: 1 Hostname: foo-2-private Uuid: c2b314ac-6ed1-455a-84d4-ec22041ee2b2 State: Peer Rejected (Connected) foo-1-private# gluster volume add-brick foo foo-2-private:/mnt/brick Host foo-2-private not connected foo-1-private# following instructions work fine even with 3.1.6-1. 1. make a new file system with single peer. [OK] foo-1-private# gluster peer status No peer presents foo-1-private# gluster peer probe foo-2-private Probe successful foo-1-private# gluster peer status Number of Peers: 1 Hostname: foo-2-private Uuid: c2b314ac-6ed1-455a-84d4-ec22041ee2b2 State: Peer in Cluster (Connected) foo-1-private# gluster volume create foo foo-1-private:/mnt/brick Creation of volume foo has been successful. Please start the volume to access data. foo-1-private# gluster volume start foo Starting volume foo has been successful foo-1-private# gluster volume add-brick foo foo-2-private:/mnt/brick Add Brick successful foo-1-private# But ... 2. add a peer to the file system. [NG] foo-1-private# gluster peer probe foo-3-private Probe successful foo-1-private# gluster peer status Number of Peers: 2 Hostname: foo-2-private Uuid: c2b314ac-6ed1-455a-84d4-ec22041ee2b2 State: Peer in Cluster (Connected) Hostname: foo-3-private Uuid: 7fb98dac-fef704b33-837c-6483a767ec3e State: Peer Rejected (Connected) foo-1-private# gluster volume add-brick foo foo-3-private:/mnt/brick Host foo-3-private not connected foo-1-private# How should I add extra peers to existing file systems ? Best,