[Bug 420080] Re: Configure encrypted volumes destroys existing data

[Colin Watson]

On Thu, Sep 15, 2011 at 02:03:27PM -0000, Jochen Gruse wrote:
> Tried Kubuntu Oneiric alternate amd64 daily, Timestamp "15-Sep-2011
> 05:23". Partitioner works great, Oneiric installs, reboots and runs,
> /etc/fstab and /etc/crypttab are correct.

Fantastic, thanks!

> Two points I'd like to address:
> * /etc/fstab uses "/dev/mapper/system-root2" instead of UUID=... This
> works OK, but is it what you expect it to be?

Yes, that's intentional.  That's a stable name, and we only use UUIDs
when we don't have stable names.

> * GRUB installs OK, but reports an error after update-grub run.
> Choosing "Continue without installing a bootloader" finishes the
> installation and Kubunto reboots successfully into Oneiric, i.e. GRUB
> works. It's really the new installation of grub as it shows the menu
> to choose between 11.04 and 11.10.

That indeed sounds like a bug.  Please file it separately, attaching
/var/log/installer/syslog and /var/log/installer/partman.

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https://bugs.launchpad.net/bugs/420080

Title:
  Configure encrypted volumes destroys existing data

Status in Release Notes for Ubuntu:
  Fix Released
Status in “partman-crypto” package in Ubuntu:
  Fix Released
Status in “partman-crypto” source package in Natty:
  Won't Fix
Status in “partman-crypto” source package in Oneiric:
  Fix Released
Status in “partman-crypto” package in Debian:
  New

Bug description:
  Binary package hint: debian-installer

  I was running Ubuntu 8.10 32-bit, with an encrypted partition and LVM.
  I went to install Ubuntu 9.04 64-bit, hoping to reuse the same LVM
  volumes, just replacing the volume for /, leaving /home and so on
  intact.

  I fired up the 9.04 installer, got to partitioning. I chose manual,
  saw my two partitions listed, both marked "do not use". I activated
  the second partition and chose "physical volume for encryption". Now
  to see the data, I selected "Configure encrypted volumes". At this
  point a message appears asking me if I'm happy with the partitions, I
  choose yes, I'm asked for an encryption passphrase, I enter it, twice.
  At this point, I'm suspicious, I reboot to my existing 8.04
  installation. My encrypted partition has been completely destroyed,
  there is no LVM available and no data.

  The text in the installer should make it absolutely clear that when
  you choose yes at the "Configure encrypted volumes" option, this will
  destroy any encrypted data on the partition.

  Thankfully I had sufficient backups. What seemed like a routine
  install actually destroyed all my data. :-(

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