Created attachment 981417 [details]
virt-manager-gui.debug

Description of problem:
Failed to clone guest with custom path via virt-manager

Version-Release number of selected component (if applicable):
virt-manager-1.1.0-12.el7.noarch
libvirt-1.2.8-13.el7.x86_64
qemu-kvm-1.5.3-85.el7.x86_64
kernel-3.10.0-223.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Launch virt-manager,prepare a guest with shutdown status.
   Guest called: rhel6.6-test
2. Right click the guest,click "clone","Clone virtual machine" dialog pop out.
3. On the dialog,from "Storage", choose "Details", a new dialog "Change storage path" pop out.
4. Input a New Path: "/opt/kvm-rhel6.6-i386-qcow2-clone.img", then click "OK".
5. Click "clone".


Actual results:
1. After step4, error showing:
Error changing storage path: Could not use path '/opt/kvm-6.6-i386-qcow2-clone.img' for cloning: Could not define storage pool: operation failed: Storage source conflict with pool: 'opt'
Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/clone.py", line 713, in change_storage_finish
    self.clone_design.clone_paths = new_path
  File "/usr/share/virt-manager/virtinst/cloner.py", line 150, in set_clone_paths
    (path, str(e)))
ValueError: Could not use path '/opt/kvm-6.6-i386-qcow2-clone.img' for cloning: Could not define storage pool: operation failed: Storage source conflict with pool: 'opt'

1.2 In virt-manager detail debug information, showing two pools creating:
Mon, 19 Jan 2015 15:34:03 virt-manager 22229] DEBUG (diskbackend:144) Attempting to build pool=opt target=/opt
[Mon, 19 Jan 2015 15:34:03 virt-manager 22229] DEBUG (storage:464) Creating storage pool 'opt' with xml:
<pool type="dir">
  <name>opt</name>
  <uuid>ed131ba7-2708-4f2d-9618-6ac4f314eb7d</uuid>
  <target>
    <path>/opt</path>
  </target>
</pool>

[Mon, 19 Jan 2015 15:34:03 virt-manager 22229] DEBUG (diskbackend:144) Attempting to build pool=opt-1 target=/opt
[Mon, 19 Jan 2015 15:34:03 virt-manager 22229] DEBUG (storage:464) Creating storage pool 'opt-1' with xml:
<pool type="dir">
  <name>opt-1</name>
  <uuid>c637b481-cfae-4938-86eb-88f6e025cc84</uuid>
  <target>
    <path>/opt</path>
  </target>
</pool>

1.3 A new pool "opt" added.

# virsh pool-list --all
 Name                 State      Autostart
-------------------------------------------
 default              active     yes      
 libvirt              active     yes      
 opt                  active     yes    


2. Close Error box and click "OK" again, there is no error pop up and after click "Clone", guest can be cloned with no error.

I will attach virt-manager debug info: virt-manager-gui.debug

Expected results:
Guest can be cloned successfully with custom path first time.

Additional info:
via virt-clone command can clone guest with custom path successfully:

1. Check existing pools:
# virsh pool-list --all
 Name                 State      Autostart
-------------------------------------------
 default              active     yes      
 libvirt              active     yes  
  
2.
# virt-clone  -o rhel6.6-test -n rhel6.6-test-clone -f /opt/kvm-6.6-i386-qcow2-clone.img
Allocating 'kvm-6.6-i386-qcow2-clone.img'                                                                            | 1.0 kB  00:00:10    

Clone 'rhel6.6-test-clone' created successfully.
3.
# virsh pool-list --all
 Name                 State      Autostart
-------------------------------------------
 default              active     yes      
 libvirt              active     yes      
 opt                  active     yes  

I will attach virt-clone command debug info: virt-clone-cmd-debug