Upon more testing with the Ubuntu Desktop i386 [20101007] iso I see
there is an actual bug in the ointment.

I chose to auto-resize drive sdb which I'd been using for iso-testing
and it had two Ubuntu's on it, each with a new swap, well actually the
second would have been using both swap partitions. You know how "auto"
installs work, you'll end up with a new swap for each new install, etc.

The graphic that consists of a "slider" to change the partition size
showed sdb1 on the left and sdb2 on the right so I thought, "hmmm it's
going to create a primary partition for the new install"? That would be
odd, but it didn't, it did what I'm used to seeing:

la...@lance-desktop:~$ sudo parted /dev/sdb print
[sudo] password for lance: 
Model: ATA WDC WD800JB-00JJ (scsi)
Disk /dev/sdb: 80.0GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      1049kB  19.3GB  19.3GB  primary   ext4
 2      19.3GB  80.0GB  60.7GB  extended
 8      19.3GB  37.8GB  18.5GB  logical   ext4
 9      37.8GB  38.7GB  849MB   logical   linux-swap(v1)
 6      38.7GB  75.1GB  36.4GB  logical   ext4
 7      75.1GB  76.7GB  1604MB  logical   linux-swap(v1)
 5      76.7GB  80.0GB  3305MB  logical   linux-swap(v1)

That is it created sda8 as "/" and sda9 as swap, both as logical
partitions, so it's simply displaying bogus info.  How confusing that
might be to a total noob I'm unsure.

Just to see how reproducible this was I selected my drive sda which I'd
never use auto-resize on anyway:

la...@lance-desktop:~$ sudo parted /dev/sda print
Model: ATA WDC WD5000AAKS-0 (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type      File system     Flags
 1      32.3kB  21.5GB  21.5GB  primary   ext3            boot
 2      21.5GB  42.9GB  21.5GB  primary   ext3
 3      42.9GB  151GB   108GB   primary   ext3
 4      151GB   500GB   349GB   extended
14      151GB   172GB   21.1GB  logical   ext4
15      172GB   193GB   21.1GB  logical   ext4
16      193GB   215GB   21.4GB  logical   ext4
17      215GB   236GB   21.4GB  logical   ext4
13      236GB   258GB   22.0GB  logical   ext4
12      258GB   280GB   21.6GB  logical   ext3
11      280GB   301GB   21.7GB  logical   ext3
10      301GB   323GB   21.8GB  logical   ext3
 5      323GB   378GB   55.1GB  logical   ext3
 6      378GB   432GB   53.6GB  logical   ext3
 7      432GB   487GB   54.9GB  logical   ext3
 8      487GB   498GB   10.7GB  logical   ext3
 9      498GB   500GB   2517MB  logical   linux-swap(v1)

Ridiculous I know but I do a lot of testing and VM's do a poor job of
testing actual hardware. Anyway, since sda3 is the largest partition,
the screen after selecting "auto-resize" showed it was splitting sda3
into sda3 and sda4. Of course that's not possible since sda4 is an
extended partition and since I have 3 primaries and an extended already
there would be no way to split sda3 and simply "renumber" drives.

Of course I quit the install because I don't really want to start over
with that drive even though my data is backed up, so I have no idea what
would have really happened.

Next I'm going to try just creating 3, and then 4, empty NTFS partitions
on that 80 GB drive to see what "auto-resize" tries to do. I really wish
I could get some other folks to try and reproduce this.

I'm kind of thinking that the auto-resize option should just be
unavailable if a certain number and/or layout of partitions exist on the
selected drive.

I also realize that it's probably not possible to fix this with only a
few days until release but I'll try to reproduce this in some more sane
"mock-up-scenarios" and maybe someone can come up with something
coherent for the release notes.

I would have been testing this earlier but due to bug 640807 I'd only
been able to test ubiquity in a VM since about September 16th.

-- 
Maverick ubiquity confusion w/ auto-resize option
https://bugs.launchpad.net/bugs/655950
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