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[Felix Oxley <1509858@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Hi,

I have a working installation of Ubuntu Gnome 15.10 x64.

I have an external USB drive (MyBook) that is connected all the time.
The system has been working correctly for a week, and *probably* booting correctly even when the external drive was turned off. (I can't say 100% whether I have booted it with the drive off before today).


In order to allow this drive to be accessed and mounted/unmounted by all users of the system I have added it to /etc/fstab.

/dev/sdc1       /media/MyBook   ext4
rw,user,nosuid,nodev,relatime,data=ordered,uhelper=udisks2

molly@molly:~$ ls -l /media
total 12
drwxr-x---+ 2 root  root  4096 Oct 18 11:30 charlotte
drwxr-x---+ 2 root  root  4096 Oct 25 18:26 molly
drwx------  8 molly molly 4096 Oct 25 18:44 MyBook

However, now if I turn the drive off and reboot the system Ubuntu doesn't start correctly.
I get the Ubuntu logo with the 'spinner' and then after a couple of minutes the emergency mode screen.

It is very hard to get any useful information about the cause of the boot failure once you reach this point.
The journalctl -xb command gives a vast amount of information without making it clear what the problem is.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: mount 2.26.2-6ubuntu3
ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
Uname: Linux 4.2.0-16-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.19.1-0ubuntu3
Architecture: amd64
CurrentDesktop: GNOME
Date: Sun Oct 25 19:24:14 2015
InstallationDate: Installed on 2015-10-16 (8 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20151016)
SourcePackage: util-linux
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: util-linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug wily

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https://bugs.launchpad.net/bugs/1509858

Title:
  Ubuntu 15.10 won't boot unless external USB drive is connected

Status in util-linux package in Ubuntu:
  New

Bug description:
  Hi,

  I have a working installation of Ubuntu Gnome 15.10 x64.

  I have an external USB drive (MyBook) that is connected all the time.
  The system has been working correctly for a week, and *probably* booting correctly even when the external drive was turned off. (I can't say 100% whether I have booted it with the drive off before today).

  
  In order to allow this drive to be accessed and mounted/unmounted by all users of the system I have added it to /etc/fstab.

  /dev/sdc1       /media/MyBook   ext4
  rw,user,nosuid,nodev,relatime,data=ordered,uhelper=udisks2

  molly@molly:~$ ls -l /media
  total 12
  drwxr-x---+ 2 root  root  4096 Oct 18 11:30 charlotte
  drwxr-x---+ 2 root  root  4096 Oct 25 18:26 molly
  drwx------  8 molly molly 4096 Oct 25 18:44 MyBook

  However, now if I turn the drive off and reboot the system Ubuntu doesn't start correctly.
  I get the Ubuntu logo with the 'spinner' and then after a couple of minutes the emergency mode screen.

  It is very hard to get any useful information about the cause of the boot failure once you reach this point.
  The journalctl -xb command gives a vast amount of information without making it clear what the problem is.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: mount 2.26.2-6ubuntu3
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.19.1-0ubuntu3
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sun Oct 25 19:24:14 2015
  InstallationDate: Installed on 2015-10-16 (8 days ago)
  InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Alpha amd64 (20151016)
  SourcePackage: util-linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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