HI Strahil, I am also running into an issue trying to replace a brick. 1.-/dev/sdd failed which is our /gluster_bricks/data2/data2 brick, hat disk was taken out of the array controller and added a new one. 2.-there are quite a bit of entries related to /dev/sdd , i.e. [root@host1]# dmsetup info |grep sdd Name: gluster_vg_sdd-gluster_thinpool_gluster_vg_sdd-tpool Name: gluster_vg_sdd-gluster_thinpool_gluster_vg_sdd_tdata Name: gluster_vg_sdd-gluster_thinpool_gluster_vg_sdd_tmeta Name: gluster_vg_sdd-gluster_thinpool_gluster_vg_sdd Name: gluster_vg_sdd-gluster_lv_data2 this causes the OS to see the new disk as /dev/sde (the controller presents it as /dev/sde) array C Logical Drive: 3 Size: 2.7 TB ... Disk Name: /dev/sde Mount Points: None ..... Drive Type: Data LD Acceleration Method: Controller Cache If i just remove all the thinpool entries (if i find them) do you think that might do the trick? thanks, Adrian