User not created with encrypted home partition: user-setup exit code 32

[Charlie Kravetz]

RELEASE: Oneiric Ocelot Alpha3 candidate
CD/DVD VARIANT: Xubuntu Alternate i386 and amd64 images
ISO BUILD: 20110802.1

SYMPTOMS:
After installing using the instructions provided at http://testcases.qa.ubuntu.com/Install/AlternateEncryptedLvm , when restarting, I can enter the passphrase. When lightdm starts, entering the username and password results in "Incorrect password". Switching to a tty, entering the same information results in "login incorrect". Since this is an encrypted drive, I can not access any logs.

STEPS TO REPRODUCE:

    Step 1: install Xubuntu using the instructions for the encrypted LVM install:
                 http://testcases.qa.ubuntu.com/Install/AlternateEncryptedLvm
    Step 2: Attempt to login to lightdm

This has failed for me using two different hardware computers and VirtualBox.

[Charlie Kravetz (cjkgeek)]

Simply encrypting /home will also cause login to fail for bad password.

Since I can reproduce this on any of my hardware systems, if someone can tell me how to get the logs from the encrypted drive, I will attach them.

[madnick (dr-madnick)]

I have the same issue, the ISO I use is the 20110805 xubuntu alt-i386 image.

[Sebastien Bacher (seb128)]

why do you think it's a lightdm issue if the login doesn't work on a normal vt either?

[Jean-Baptiste Lallement (jibel)]

Brian, could you have a look at it, that looks more like a general authentication issue than lightdm specific.

[Sebastian Bengtsson (5ebastian)]

I have some results from actual usage more similar to
http://testcases.qa.ubuntu.com/Install/AlternateEncryptedHome

Ubuntu alternate i386 alpha3:
LVM install, no encrypted volumes. After I set up a default user, debinstall prompts if I want encrypted home dir, and I choose yes. Finnish install but don't reboot. Get shell and cat /target/etc/passwd. Default user (uid=1000) has NOT been added.

[Jean-Baptiste Lallement (jibel)]

Could you please attach the installer log from /var/log/installer ?
You can collect the installer logs by booting in rescue mode and mounting LVM root partition. Thanks in advance.

[Jean-Baptiste Lallement (jibel)]

I reproduced it with d-i and selecting 'Encrypted Home' (LVM or not doesn't matter)
syslog (attached) contains the following warning:
 finish-install: warning: /usr/lib/finish-install.d/06user-setup returned error code 32

the user is not created at all (no home directory, no password entry added)

[Sebastian Bengtsson (5ebastian)]

My installer syslog might be a bit messy as I did hands-on (chroot) to get the system up.
The line "finish-install: warning: /usr/lib/finish-install.d/06user-setup returned error code 32" is present.

[Brian Murray (brian-murray)]

A bit more context regarding the error follows:

Aug 11 08:21:41 finish-install: + log-output -t user-setup chroot /target mount -t sysfs sysfs /sys
Aug 11 08:21:41 finish-install: + umountsys=:
Aug 11 08:21:41 finish-install: + log-output -t user-setup chroot /target mount -t tmpfs tmpfs /dev/shm
Aug 11 08:21:41 user-setup: mount: mount point /dev/shm does not exist
Aug 11 08:21:41 user-setup:
Aug 11 08:21:41 finish-install: warning: /usr/lib/finish-install.d/06user-setup returned error code 32

[Launchpad Janitor (janitor)]

This bug was fixed in the package user-setup - 1.28ubuntu18

---------------
user-setup (1.28ubuntu18) oneiric; urgency=low

  * Make sure /dev/shm exists before mounting it for ecryptfs (LP: #820460).
 -- Colin Watson <email address hidden> Fri, 12 Aug 2011 15:45:53 +0100

[Daniel Swarbrick (pressureman)]

I still had problems with an amd64-alternate installer from 2011-08-15. I don't have the installer logs, but it appeared that the installer kernel did not support ecryptfs (not shown in /proc/filesystems) and there was no ecryptfs.ko to be found. When user-setup tried to create the ecryptfs home dir, it naturally failed.

I managed to work around this upon the second attempt by chdir'ing into the target install's /lib/modules directory, and manually insmod'ing the ecryptfs.ko before responding to the debconf question, whether I wanted to encrypt my home directory. That seemed to work ok.

However, after rebooting into the new install, lightdm fails to transition to the desktop after entering the password. If I switch to another text mode vty and log in, it mounts my ecryptfs home dir fine, and if I then switch back to lightdm and log in graphically, that also succeeds. So it would appear that lightdm has problems mounting the ecryptfs directory.

[Daniel Swarbrick (pressureman)]

This is probably unrelated to the original bug, but I found that installing gdm and setting it as the default login manager, I was then able to successfully log in (and the ecryptfs home dir was successfully mounted). Not too surprising, since lightdm is still under heavy development from what I've seen.

[Jean-Baptiste Lallement (jibel)]

Daniel, thanks for your comment. This is a different problem. I've been able to reproduce and filed report 827197. You may wish to subscribe to this report to track the status.