Unable to umount partition mounted in chroot mode

Bug #1780226 reported by Serge Kiki
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
ubiquity (Ubuntu)
New
Undecided
Unassigned

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)

Revision history for this message
Serge Kiki (serge-kiki) wrote :
Revision history for this message
rootchord (joe-eldredge) wrote :

I believe i'm having the same issue. Trying to get a preseed to work and it hangs trying to umount on shutdown. the install still works if you force shutdown afterwards...but the point of a preseed is to be unattended, and users having to force a shutdown make my team, and ubuntu, look bad.

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