[Bug 993761] Re: Precise Server Installer does not allow to complete the encrypt partitions procedure

[ietc]

Sorry I'm late.

Alternate Installer (debian-install) for Ubuntu 12.04 only supports, I
think, three different ciphers: aes-cbc-plain, aes-cbc-essiv, and
something else.  Afraid it is not very fresh in my mind.  Certainly not
anyting involving aes-xts-*.

This contrasts sharply with the standard desktop installer/LiveCD, which
does support modern ciphers; it even comes with cryptsetup installed.
However, I think it lacks support for properly creating filesystems in
LUKS and LVM partitions.  In my case, what I had to do was set up all
the encryption, LVM, and filesystem stuff before starting the installer,
including luksOpen and vgchange so that the filesystems would be fully
visible to the installer.   (In order to access the LVM stuff, I had to
"apt-get install lvm2".) Afterward, before I rebooted out of the LiveCD
environment, I mounted the partitions for the new install, chroot into
it, then "apt-get install cryptsetup" (and "apt-get install lvm2") and
manually set up "(/target)/etc/crypttab".

(Dealing with a grub-efi was a different frustrating issue.)

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https://bugs.launchpad.net/bugs/993761

Title:
  Precise Server Installer does not allow to complete the encrypt
  partitions procedure

Status in “debian-installer” package in Ubuntu:
  New

Bug description:
  I have tried 3 times to isntall Ubuntu Precise using the Server
  Installer amd64 and it proved to be impossible to complete the task
  about encrypted partitions.

  First i need to clarify that i have the dstro Mageia 2 Beta 3
  installed in the disk with /home encrypted.

  I burn the iso ubuntu-12.04-alternate-amd64.iso and then start the installer, all goes fine untill i reach the part about partitioning, which i choose manual and select one partition as /boot, and then select 2 partitions (swap and /) to be encrypted, i enter the passphrase for both and all goes well.
  Now i select to activate the partitions and the problem starts here because it always first asks to enter the passphrase for the partitions /dev/sda8 that is isntalled in the disk as the Mageia /home encrypted partition and important to refer that Mageia uses cyper aes-xts-benbi which is NOT RECOGNIZED by ubuntu text installer and apepars to be the problem.
  But also why is the installer asking the passphrase about an encrypted partition thats not part of the created encrypted partitions in the isntaller?

  Anyway when it asks the passphrase for the Mageia /home encryted
  partiton (/dev/sda8) i enter the passphrase but continues asking the
  passphrase as it was an invalid one, but the issue is that isnt able
  to recognize a partition created with the cypher  aes-xts-benbi, and
  then stucks there and it never passes to the encrypted partitions that
  were created in the installer.

  Thus making impossible to continue the instalation with encrypted
  partitions.

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