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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1483325

Title:
  mount -t overlayfs misinforms when nonexisting directories are
  provided

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Consider the directory structure like this:

  root@MIKE /tmp/ofs> ls -al
  total 20
  drwxr-xr-x 5 root root 4096 Aug 10 18:09 .
  drwxrwxrwt 9 root root 4096 Aug 10 18:09 ..
  drwxr-xr-x 2 root root 4096 Aug 10 18:09 lower
  drwxr-xr-x 2 root root 4096 Aug 10 18:09 mounting
  drwxr-xr-x 2 root root 4096 Aug 10 18:09 upper

  Mounting upper over lower on mounting mount point works just fine:

  root@MIKE /tmp/ofs> mount -t overlayfs myoverlay -o lowerdir=lower,upperdir=upper mounting/
  root@MIKE /tmp/ofs> df -Th mounting/
  Filesystem     Type       Size  Used Avail Use% Mounted on
  myoverlay      overlayfs  219G   94G  114G  46% /tmp/ofs/mounting
  root@MIKE /tmp/ofs> 

  However if the directory name is misspelled (that is, we're providing
  wrong directory), the error message is misleading:

  32 root@MIKE /tmp/ofs> mount -t overlayfs myoverlay -o lowerdir=IAMWRONG,upperdir=upper mounting/
  mount: special device myoverlay does not exist

  
  I'm running this on Ubuntu 14.04.3 LTS, using 3.13.0-61-generic kernel.

  I'm not sure if this fits under 'linux' package, but I can't seem to be able to find 'mount' package in Launchpad.
  --- 
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  mario      2458 F.... pulseaudio
   /dev/snd/controlC0:  mario      2458 F.... pulseaudio
  CurrentDesktop: MATE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=fa8de8e9-450d-4a2e-8ca6-fa542a0352e3
  InstallationDate: Installed on 2014-12-16 (236 days ago)
  InstallationMedia: Ubuntu MATE 14.04.1 "Trusty Tahr" - final amd64 (20141111)
  MachineType: LENOVO 42405XG
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-61-generic root=UUID=a3231802-c7ff-406a-9aca-83a4bb0c7d70 ro quiet splash
  ProcVersionSignature: Ubuntu 3.13.0-61.100-generic 3.13.11-ckt22
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-61-generic N/A
   linux-backports-modules-3.13.0-61-generic  N/A
   linux-firmware                             1.127.14
  Tags:  trusty
  Uname: Linux 3.13.0-61-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip disk fuse libvirtd lpadmin plugdev sambashare sbuild sudo
  _MarkForUpload: True
  dmi.bios.date: 12/06/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8AET56WW (1.36 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 42405XG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr8AET56WW(1.36):bd12/06/2011:svnLENOVO:pn42405XG:pvrThinkPadT520:rvnLENOVO:rn42405XG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 42405XG
  dmi.product.version: ThinkPad T520
  dmi.sys.vendor: LENOVO

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