Improve "Libvirt.create_snapshot_qemu" function

Improved "Libvirt.create_snapshot_qemu" function:
- Check if the base image is present in the remote host.
  If not, try to copy from the execution host.
- Check the execution status. In case the command fails, raise an
  exception.

JIRA: YARDSTICK-944

Change-Id: I78bd0d3ed6a1f35ed772c0d192bb240009a580ed
Signed-off-by: Rodolfo Alonso Hernandez <rodolfo.alonso.hernandez@intel.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/yardstick/common/exceptions.py b/yardstick/common/exceptions.py
index 65e444071..597eaf48b 100644
--- a/yardstick/common/exceptions.py
+++ b/yardstick/common/exceptions.py
@@ -117,6 +117,17 @@ class LibvirtCreateError(YardstickException):
     message = 'Error creating the virtual machine. Error: %(error)s.'
 
 
+class LibvirtQemuImageBaseImageNotPresent(YardstickException):
+    message = ('Error creating the qemu image for %(vm_image)s. Base image: '
+               '%(base_image)s. Base image not present in execution host or '
+               'remote host.')
+
+
+class LibvirtQemuImageCreateError(YardstickException):
+    message = ('Error creating the qemu image for %(vm_image)s. Base image: '
+               '%(base_image)s. Error: %(error)s.')
+
+
 class ScenarioConfigContextNameNotFound(YardstickException):
     message = 'Context name "%(context_name)s" not found'