[Bug 1056744] Re: Ubiquity eventually crashes after reverting encrypted partitions in the manual installer

[Dmitrijs Ledkovs]

The Revert button (ubiquity UI) or "Undo changes" (debian-installer UI)
do not recursively remove create device mapper nodes created with
partman-crypto configure or activate menu items. LVM is not affected as
much, as one can manually remove volume groups using the lvm menu.
Further checking is needed what happens with partman-md during undo.

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Title:
  Ubiquity eventually crashes after reverting encrypted partitions in
  the manual installer

Status in “partman-crypto” package in Ubuntu:
  New
Status in “ubiquity” package in Ubuntu:
  Confirmed
Status in “partman-crypto” source package in Quantal:
  New
Status in “ubiquity” source package in Quantal:
  Confirmed
Status in “partman-crypto” package in Debian:
  Unknown

Bug description:
  Quantal Desktop 20120926

  TEST CASE:
  1. Start Ubiquity and go to the manual partitioner
  2. Create a new partition: 500MB /boot ext4
  3. Create a new partition: 16GB Physical volume for encryption
  4. Press 'Revert'
  5. Select the encrypted device and on this device
  5.1. Create a new partition: 2GB swap area
  5.2. Create a new partition: 14GB ext4 /
  6. Continue with installation

  ACTUAL RESULT:
  This crash
  Sep 26 09:52:56 ubuntu ubiquity[2830]: switched to page timezone
  Sep 26 09:52:57 ubuntu partman: mke2fs 1.42.5 (29-Jul-2012)
  Sep 26 09:52:59 ubuntu ubiquity: cat: 
  Sep 26 09:52:59 ubuntu ubiquity: 0-16675504127/mountpoint
  Sep 26 09:52:59 ubuntu ubiquity: : No such file or directory
  Sep 26 09:52:59 ubuntu ubiquity: 
  Sep 26 09:52:59 ubuntu kernel: [  408.634734] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
  Sep 26 09:52:59 ubuntu ubiquity: cat: 
  Sep 26 09:52:59 ubuntu ubiquity: 0-16675504127/mountpoint
  Sep 26 09:52:59 ubuntu ubiquity: : No such file or directory
  Sep 26 09:52:59 ubuntu ubiquity: 
  Sep 26 09:53:00 ubuntu ubiquity[2830]: debconffilter_done: ubiquity.components.partman_commit (current: ubi-timezone)
  Sep 26 09:53:00 ubuntu ubiquity: Traceback (most recent call last):
  Sep 26 09:53:00 ubuntu ubiquity:   File "/usr/share/ubiquity/install.py", line 693, in <module>
  Sep 26 09:53:00 ubuntu ubiquity:     install = Install()
  Sep 26 09:53:00 ubuntu ubiquity:   File "/usr/share/ubiquity/install.py", line 74, in __init__
  Sep 26 09:53:00 ubuntu ubiquity:     'Failed to mount the target: %s' % str(self.target)
  Sep 26 09:53:00 ubuntu ubiquity: AssertionError: Failed to mount the target: /target

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: ubiquity 2.12.5
  ProcVersionSignature: Ubuntu 3.5.0-15.23-generic 3.5.4
  Uname: Linux 3.5.0-15-generic x86_64
  ApportVersion: 2.5.2-0ubuntu4
  Architecture: amd64
  CasperVersion: 1.324
  Date: Wed Sep 26 11:53:03 2012
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20120926)
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   LANG=en_US.UTF-8
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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