[Bug 1019347] Re: A message: "mount: / is busy" appears every time shutting down or rebooting.

Steve Langasek steve.langasek at canonical.com
Sat Sep 29 20:08:56 UTC 2012


This problem is not universally reproducible.  I don't see any of these
problems in 12.10 - I certainly don't think this is a plymouth bug,
since plymouth runs on everyone's systems.  Someone who can reproduce
this will have to debug to find out what files are being held open and
why.

** Changed in: plymouth (Ubuntu)
       Status: Confirmed => Incomplete

** Changed in: upstart (Ubuntu)
       Status: Confirmed => Invalid

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Title:
  A message: "mount: / is busy" appears every time shutting down or
  rebooting.

Status in “plymouth” package in Ubuntu:
  Incomplete
Status in “upstart” package in Ubuntu:
  Invalid

Bug description:
  I arrived here from bug 963106
  [https://bugs.launchpad.net/bugs/963106]. I thought that it was a
  problem with network-manager, but it was not.

  I was suggested that it is probably a problem with upstart : "that
  modemmanager simply hasn't had time to complete the shutdown process
  before umountroot is run. Since modemmanager is an upstart job,
  sendsigs doesn't kill it."

  lsb_release -rd:
       Description:	Ubuntu 12.04 LTS
       Release:	        12.04

  apt-cache policy upstart:
     upstart:
    Installed: 1.5-0ubuntu7
    Candidate: 1.5-0ubuntu7
    Version table:
   *** 1.5-0ubuntu7 0
          500 http://kambing.ui.ac.id/ubuntu/ precise-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       1.5-0ubuntu5 0
          500 http://kambing.ui.ac.id/ubuntu/ precise/main amd64 Packages

  Hope this will be fixed. Thanks.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: upstart 1.5-0ubuntu7
  ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
  Uname: Linux 3.2.0-26-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: amd64
  Date: Sat Jun 30 00:08:18 2012
  InstallationMedia: Custom Live CD - Release amd64
  SourcePackage: upstart
  UpgradeStatus: No upgrade log present (probably fresh install)

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