[Bug 980676] Re: during installation a not involved partition was mounted and could not be unmounted. Installation was cut down.

[Brian Murray]

It looks like it is migration-assistant mounting /dev/sda9:

Apr 13 10:13:44 ubuntu migration-assistant: info: setting ostype from: '/dev/sda9:Ubuntu 11.10 (11.10):Ubuntu1:linux'
Apr 13 10:13:44 ubuntu migration-assistant: info: got ostype of: 'linux', mountpoint is: '/ target'
Apr 13 10:13:45 ubuntu kernel: [  812.201775] EXT4-fs (sda9): mounted filesystem with       ordered data mode. Opts: (null)

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Title:
  during installation a not involved partition was mounted and could not
  be unmounted. Installation was cut down.

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  From another bug report it appears that you must have multiple users
  on the system the data is being migrated from:

  Steps to reproduce:
  1. Install some Ubuntu (ex. 10.04) on partition and add several users on them. Each of them should have own firefox configuration.
  2. Run Ubuntu 12.04 Precise installation and run installation on new partition. It will hangs, because it was unable to unmount the partition with two users

  Acer Aspire 5750g

  ProblemType: BugDistroRelease: Ubuntu 12.04
  Package: ubiquity 2.10.4
  ProcVersionSignature: Ubuntu 3.2.0-20.33-generic-pae 3.2.12
  Uname: Linux 3.2.0-20-generic-pae i686
  NonfreeKernelModules: wl
  ApportVersion: 1.95-0ubuntu1
  Architecture: i386
  CasperVersion: 1.312
  Date: Fri Apr 13 12:18:35 2012
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120328)
  ProcEnviron:
   TERM=unknown
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bashSourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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