Comment 7 for bug 973377

Verified this bug exists in devstack as well:

2012-04-04 17:10:34 ERROR nova.manager [-] Error during ComputeManager._run_image_cache_manager_pass: [Errno 13] Permission denied: '/home/vagrant/_base/87ad83b59bbed6a3d3cea9afdf3e1fd36c694ac2'
2012-04-04 17:10:34 TRACE nova.manager Traceback (most recent call last):
2012-04-04 17:10:34 TRACE nova.manager File "/opt/stack/nova/nova/manager.py", line 155, in periodic_tasks
2012-04-04 17:10:34 TRACE nova.manager task(self, context)
2012-04-04 17:10:34 TRACE nova.manager File "/opt/stack/nova/nova/compute/manager.py", line 2554, in _run_image_cache_manager_pass
2012-04-04 17:10:34 TRACE nova.manager self.driver.manage_image_cache(context)
2012-04-04 17:10:34 TRACE nova.manager File "/opt/stack/nova/nova/virt/libvirt/connection.py", line 2435, in manage_image_cache
2012-04-04 17:10:34 TRACE nova.manager self.image_cache_manager.verify_base_images(context)
2012-04-04 17:10:34 TRACE nova.manager File "/opt/stack/nova/nova/virt/libvirt/imagecache.py", line 392, in verify_base_images
2012-04-04 17:10:34 TRACE nova.manager self._handle_base_image(img, base_file)
2012-04-04 17:10:34 TRACE nova.manager File "/opt/stack/nova/nova/virt/libvirt/imagecache.py", line 358, in _handle_base_image
2012-04-04 17:10:34 TRACE nova.manager os.utime(base_file, None)
2012-04-04 17:10:34 TRACE nova.manager OSError: [Errno 13] Permission denied: '/home/vagrant/_base/87ad83b59bbed6a3d3cea9afdf3e1fd36c694ac2'