Comment 9 for bug 1262313

Can't be fixed at the moment.

Nova image cache still uses /var/lib/nova/instances/_base/ dir for converting and uploading images to ceph.

root@node-2:~# nova-compute --version
13.0.0

During instance boot process:

1. downloading qcow2 image from glance to /var/lib/nova/instances/_base/
2. converting qcow2 image to raw
3. uploading raw image to ceph
4. image resizing in ceph according to instance's flavor.

There is a bug also related to this issue:
https://bugs.launchpad.net/nova/+bug/1420274