Another issue pops-up, looks like there are a few nvdimm patches that require backporting: # ndctl create-namespace -e "namespace0.0" -m fsdax -f -vvv libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (256 byte) labels libndctl: ndctl_dimm_enable: nmem0: failed to enable libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: sizeof_namespace_index: nmem0: label area (1024) too small to host (128 byte) labels libndctl: ndctl_dimm_enable: nmem0: failed to enable enable_labels:945: region0: failed to initialize labels namespace_reconfig:977: region0: no idle namespace seed failed to reconfigure namespace: No such device root@ubuntu:~# ndctl -v 61.2+