** Changed in: ndctl
       Status: Unknown => New

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https://bugs.launchpad.net/bugs/1811785

Title:
  NVDIMM-N doesn't work properly on Dell EMC PowerEdge R840

Status in ndctl:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in ndctl package in Ubuntu:
  New

Bug description:
  On ubuntu 18.04.1 :

  1°) With 4.15.0-43 two default namespaces in raw mode are visible
  while there shouldn't be any but no settings change could be applied.

  root@server:~# ndctl list -R
  [
    {
      "dev":"region1",
      "size":103079215104,
      "available_size":0,
      "type":"pmem",
      "numa_node":1,
      "persistence_domain":"unknown"
    },
    {
      "dev":"region0",
      "size":103079215104,
      "available_size":0,
      "type":"pmem",
      "numa_node":0,
      "persistence_domain":"unknown"
    }
  ]

  root@server:~# ndctl list
  [
    {
      "dev":"namespace1.0",
      "mode":"raw",
      "size":103079215104,
      "sector_size":512,
      "blockdev":"pmem1",
      "numa_node":1
    },
    {
      "dev":"namespace0.0",
      "mode":"raw",
      "size":103079215104,
      "sector_size":512,
      "blockdev":"pmem0",
      "numa_node":0
    }
  ]

  root@server:~# ndctl create-namespace --reconfig=namespace1.0 --type=pmem 
--mode=sector -f
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem10: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem7: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem9: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem6: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem11: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  libndctl: sizeof_namespace_index: nmem8: label area (1024) too small to host 
(256 byte) labels
  failed to reconfigure namespace: No such device

  2°) With 4.18.0-13 no active namespaces are seen which seems more
  coherent for non initialized NVDIMM-N with labels but no namespace can
  be created.

  Both patches (kernel & ndctl) listed in the github issue below needs
  to be applied in order to get them working properly. Tested against
  the current hwe 4.18 kernel.

  https://github.com/pmem/ndctl/issues/78
  --- 
  ProblemType: Bug
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Jan 15 10:55 seq
   crw-rw---- 1 root audio 116, 33 Jan 15 10:55 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 
'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 18.04
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  MachineType: Dell Inc. PowerEdge R840
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  Package: ndctl 61.2-0ubuntu1~18.04.1
  PackageArchitecture: amd64
  PciMultimedia:
   
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 mgadrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/ROOT/ubuntu@/boot/vmlinuz-4.15.0-43-generic 
root=ZFS=rpool/ROOT/ubuntu ro
  ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-43-generic N/A
   linux-backports-modules-4.15.0-43-generic  N/A
   linux-firmware                             1.173.2
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  Tags:  bionic
  Uname: Linux 4.15.0-43-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 11/21/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.3.9
  dmi.board.name: 08XR9M
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 23
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.3.9:bd11/21/2018:svnDellInc.:pnPowerEdgeR840:pvr:rvnDellInc.:rn08XR9M:rvrA01:cvnDellInc.:ct23:cvr:
  dmi.product.family: PowerEdge
  dmi.product.name: PowerEdge R840
  dmi.sys.vendor: Dell Inc.

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