Installer crash when manually partioning the disc

[Gerald Arnould]

Relevant hardware configuration :
1 internal ide hard drive (hda)
1 external usb hard drive (sda) which is plugged in.
Daily live i386 2006-05-21

Using Ubiquity, I proceed through the installation steps. When I reach step 5, I do the appropriate changes on hda, then I apply this changes.
While the changes are being applied, I right-click on the external usb hard drive icon and select "umount". Then I plug out the usb hard drive. Note that the changes on hda are still being applied at that moment.

When the changes on hda are applied, ubiquity seems to re-read the partition table of both drives, including sda even though sda does not exist anymore and crash.

Here is the traceback of the crash :
Traceback (most recent call last):
  File "/usr/bin/ubiquity", line 120, in ?
    install(sys.argv[1])
  File "/usr/bin/ubiquity", line 54, in install
    ret = wizard.run()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 266, in run
    self.process_step()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 734, in process_step
    self.gparted_to_mountpoints()
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 867, in gparted_to_mountpoints
    self.size_widgets[-1].set_text(
  File "/usr/lib/python2.4/site-packages/ubiquity/frontend/gtkui.py", line 471, in set_size_msg
    size = float(self.size[widget.split('/')[2]])
KeyError: 'sda1'

[Colin Watson (cjwatson)]

Hmm. I think this is a bit complicated to try to fix for Dapper, especially as it has an easy workaround ("don't do that, then"). I'll revisit it for Edgy.

[Colin Watson (cjwatson)]

This turned out (a) to be more straightforward than I thought and (b) to have some more serious consequences if left unfixed, so I fixed it. Bug 46395 has the details.