Ubiquity tight loop "No root file System" on Natty Alpha2 Wubi install

[bcbc]

Binary package hint: ubiquity

Fresh wubi install of Wubi Natty Alpha 2.
Apply workaround to kickoff install by replacing wubildr file (see bug 693671).

The install dialog box starts: "Install" and the text "Verifying the installation"

Then an error box pops up entitled: "No root file system"
The error text is:
  No root file system is defined
  Please correct this from the partitioning menu
                                                           OK

Clicking OK repeats the process (loops back to the same error)

By clicking on the down arrow in the Install dialog, the text flashes by very fast: METAGET partman/text...
and ends with "error widget found for partman-target/no_root"
After waiting a while it changed later to:
859.076209] VFS: file-max limit 49 426 reached

Clicking on Shutdown icon on top right didn't work. Clicking CTRL-ALT-DLT pops up an message box with empty title, a red No Entry sign, lots of square boxes for each character in the message!?, and a button with two square boxes (font issue?).

CTRL+ALT+F1 gets a terminal
Any command entered gives the same response:
-bash: start_pipeline: pgrp pipe: too many open files in system
-bash: /bin/ls: Too many open files in system

CTRL+ALT+DEL from the terminal restarts the computer.

[bcbc (bcbc)]

It doesn't go into a tight loop right away. I restarted the install in Verbose mode and dropped to a terminal CTRL-ALT-F2 when I got the first "No root file system is denied". I captured the logs and then hit CTRL-ALT-F7 back to GUI and hit OK to continue. Took logs again. Did that 4 times.

The last set of logs is attached. The repeating part that I was seeing was in /var/log/installer/debug: (just pasting the end bit here)
debconf (developer): --> 0
Feb 4 15:45:37 debconf (filter): <-- INPUT critical partman/choose_partition
debconf (developer): <-- FGET partman/choose_partition seen
debconf (developer): --> 0 true
Feb 4 15:45:37 debconf (filter): --> 30 question skipped
Feb 4 15:45:37 debconf (filter): <-- GO
debconf (developer): <-- GO
debconf (developer): --> 0 ok
Feb 4 15:45:37 debconf (filter): <-- GET partman/choose_partition
debconf (developer): <-- GET partman/choose_partition
debconf (developer): --> 1 90finish__________finish
Feb 4 15:45:37 debconf (filter): <-- GET partman-auto/method
debconf (developer): <-- GET partman-auto/method
debconf (developer): --> 1 loop
Feb 4 15:45:37 debconf (filter): <-- GET debian-installer/locale
debconf (developer): <-- GET debian-installer/locale
debconf (developer): --> 1 en_US.UTF-8
Feb 4 15:45:38 debconf (filter): <-- CAPB align
debconf (developer): <-- CAPB align escape
debconf (developer): --> 0 multiselect escape
Feb 4 15:45:38 debconf (filter): <-- INPUT critical partman-target/no_root
Feb 4 15:45:38 debconf (filter): error widget found for partman-target/no_root
debconf (developer): <-- METAGET partman-target/no_root extended_description
debconf (developer): --> 1 No root file system is defined.\n\nPlease correct this from the partitioning menu.

[bcbc (bcbc)]

Just reran a Wubi install with the version available in bug 693671. The ubiquity installer problem is no longer happening - it ran without any exceptions. So this bug is no longer relevant.