[Bug 1450758] Re: mounting of device partition fails with error "wrong fs type, bad option, bad superblock on /dev/loop0"

[Karl-Philipp Richter]

The mount succeeds after repairing the hfs+ partition in a `qemu`
instance running Ubuntu 14.04.2 amd64 (failure of `fsck.hfsplus` on
15.04 amd64 reported as
https://bugs.launchpad.net/ubuntu/+source/hfsplus/+bug/1450760). The
feedback involving a loop device is very unhelpful, though and should be
improved.

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Title:
  mounting of device partition fails with error "wrong fs type, bad
  option, bad superblock on /dev/loop0"

Status in hfsplus package in Ubuntu:
  New

Bug description:
  There's a bug about a mount failure of a hfsplus partition on a `dd`
  image with the same error message
  (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/889928), but I
  experience the issue with a regular device partition of an USB 3.0
  connected HDD as well. `dmesg` shows

      hfsplus: invalid secondary volume header
      hfsplus: unable to find HFS+ superblock

  
  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: hfsplus 1.0.4-12.1ubuntu1
  Uname: Linux 4.0.1-040001-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Fri May  1 11:56:00 2015
  Dependencies:
   gcc-5-base 5.1~rc1-0ubuntu1
   libc6 2.21-0ubuntu4
   libgcc1 1:5.1~rc1-0ubuntu1
   libhfsp0 1.0.4-12.1ubuntu1
   multiarch-support 2.21-0ubuntu4
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-04-02 (28 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150326)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: hfsplus
  SystemImageInfo:
   current build number: 0
   device name:
   channel: daily
   last update: Unknown
  UpgradeStatus: No upgrade log present (probably fresh install)

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