[Bug 1780226] Re: Unable to umount partition mounted in chroot mode

[Simon Quigley]

** Changed in: ubiquity (Ubuntu)
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/1780226

Title:
  Unable to umount partition mounted in chroot mode

Status in ubiquity package in Ubuntu:
  Won't Fix

Bug description:
  Some system file system (proc and sys) mounted with 'mount --bind' on
  an host system could not be unmounted by the installer. Trying to go
  back as proposed by the installer causes the installation failure.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CasperVersion: 1.394
  Date: Thu Jul  5 18:06:38 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/xubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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