/dev/mapper contains device nodes, e.g.: brw-rw---- 1 root disk 254, 73 Apr 11 23:15 vg_phoesrv2b-lvsnap those should be symlinks ( except for/dev/mapper/control ): vg_phoesrv2b-lvsnap -> ../dm-31 solution: rm /dev/mapper/vg_phoesrv2b-lvsnap udevadm trigger