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Diffstat (limited to 'glance_store/_drivers/rbd.py')
| -rw-r--r-- | glance_store/_drivers/rbd.py | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/glance_store/_drivers/rbd.py b/glance_store/_drivers/rbd.py index b5431fc..9c1d45b 100644 --- a/glance_store/_drivers/rbd.py +++ b/glance_store/_drivers/rbd.py @@ -434,6 +434,14 @@ class Store(driver.Store): 'snapshot': DEFAULT_SNAPNAME, }, self.conf) + def _snapshot_has_external_reference(self, image, snapshot_name): + """Returns True if snapshot has external reference else False. + """ + image.set_snap(snapshot_name) + has_references = bool(image.list_children()) + image.set_snap(None) + return has_references + def _delete_image(self, target_pool, image_name, snapshot_name=None, context=None): """ @@ -453,6 +461,14 @@ class Store(driver.Store): if snapshot_name is not None: with rbd.Image(ioctx, image_name) as image: try: + # NOTE(abhishekk): Check whether snapshot + # has any external references + if self._snapshot_has_external_reference( + image, snapshot_name): + raise rbd.ImageBusy( + "Image snapshot has external " + "references.") + self._unprotect_snapshot(image, snapshot_name) image.remove_snap(snapshot_name) except rbd.ImageNotFound as exc: |