Cannot use manual partitioner if an LVM partition already exists

[Jean-Baptiste Lallement]

Quantal 20120904.1

The manual partitioner cannot be used if an LVM partition already exists. Any action - access to the partitioner, create new partition table, delete partition - failed with the message:

"""
No modification can be made to the partition #5 of device SCSI1 (0,0,0) (sda) for the following reasons:

In use by LVM volume group ubuntu
"""

Screenshot attached

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubiquity 2.11.29
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
ApportVersion: 2.5.1-0ubuntu4
Architecture: amd64
CasperVersion: 1.321
Date: Wed Sep 5 06:36:30 2012
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120904.1)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1046167

[Dimitri John Ledkov (xnox)]

Yes, manual partitioning doesn't know how to manipulate LVM volumes, but it sees them ever since parman-lvm inclusion (early alphas).