Description of problem:

During the storage configuration of a new VM installation process, virt-manager allow us to select an existing volume, but when you try to create a new volume using the wizard, virt-manager seems to hang and you need to close the entire application. This issue doesn't happen in upstream version.

Version-Release number of selected component (if applicable):
virt-manager-0.9.0-7.fc16.noarch

How reproducible:
Always.

Steps to Reproduce:

1. Open new VM creation process
2. In the storage configuration dialog, check "Select managed or other existing storage"
3. Select on pool and click at "New volume"
4. Dialog hangs and nothing is logged  

Actual results:
virt-manager seems to hang.

Expected results:
"New volume wizard" opens.

Current workaround:

Creating new volumes through: 

Edit > Connection Details > Storage > New volume

Additional info:

Nothing in log file.

Using debug entries in "src/virtManager/createvol.py", is possible to see that the method "show" is executed.

    def show(self, parent):
        logging.debug("Showing new volume wizard")
        self.reset_state()
        self.topwin.set_transient_for(parent)
        self.topwin.present()

Sorry but I couldn't figure out what commit in upstream version fix this issue.