def _delete_image(self,
target_pool,
image_name,
snapshot_name=None,
context=None):
"""
Delete RBD image and snapshot.
:param image_name: Image's name
:param snapshot_name: Image snapshot's name
:raises: NotFound if image does not exist;
InUseByStore if image is in use or snapshot unprotect failed
"""
with self.get_connection(conffile=self.conf_file,
rados_id=self.user) as conn:
with conn.open_ioctx(target_pool) as ioctx:
try:
# First remove snapshot.
if snapshot_name is not None:
with rbd.Image(ioctx, image_name) as image:
try:
self._unprotect_snapshot(image, snapshot_name)
image.remove_snap(snapshot_name)
except rbd.ImageNotFound as exc:
msg = (_("Snap Operating Exception "
"%(snap_exc)s "
"Snapshot does not exist.") % {
'snap_exc': exc
})
LOG.debug(msg)
except rbd.ImageBusy as exc:
log_msg = (_LE("Snap Operating Exception "
"%(snap_exc)s "
"Snapshot is in use.") % {
'snap_exc': exc
})
LOG.error(log_msg)
raise exceptions.InUseByStore()
# Then delete image.
rbd.RBD().remove(ioctx, image_name)
except rbd.ImageHasSnapshots:
log_msg = (_LE("Remove image %(img_name)s failed. "
"It has snapshot(s) left.") % {
'img_name': image_name
})
LOG.error(log_msg)
raise exceptions.HasSnapshot()
except rbd.ImageBusy:
log_msg = (_LE("Remove image %(img_name)s failed. "
"It is in use.") % {
'img_name': image_name
})
LOG.error(log_msg)
raise exceptions.InUseByStore()
except rbd.ImageNotFound:
msg = _("RBD image %s does not exist") % image_name
raise exceptions.NotFound(message=msg)
def _delete_image(self,
target_pool,
image_name,
snapshot_name=None,
context=None):
"""
Delete RBD image and snapshot.
:param image_name Image's name
:param snapshot_name Image snapshot's name
:raises NotFound if image does not exist;
InUseByStore if image is in use or snapshot unprotect failed
"""
with self.get_connection(conffile=self.conf_file,
rados_id=self.user) as conn:
with conn.open_ioctx(target_pool) as ioctx:
try:
# First remove snapshot.
if snapshot_name is not None:
with rbd.Image(ioctx, image_name) as image:
try:
image.unprotect_snap(snapshot_name)
except rbd.ImageBusy:
log_msg = _("snapshot %(image)s@%(snap)s "
"could not be unprotected because "
"it is in use")
LOG.debug(log_msg % {
'image': image_name,
'snap': snapshot_name
})
raise exceptions.InUseByStore()
image.remove_snap(snapshot_name)
# Then delete image.
rbd.RBD().remove(ioctx, image_name)
except rbd.ImageNotFound:
msg = _("RBD image %s does not exist") % image_name
raise exceptions.NotFound(message=msg)
except rbd.ImageBusy:
log_msg = _("image %s could not be removed "
"because it is in use")
LOG.debug(log_msg % image_name)
raise exceptions.InUseByStore()
def _del_rbd_image(dest_url, image_id):
"""Delete image from RBD"""
rbd_loc = _parse_rbd_location(dest_url)
if not rbd_loc:
reason = "Not a Ceph RBD image"
raise exception.InvalidRbdUrl(image_id=image_id, url=dest_url)
else:
_prefix, pool, image_name, snapshot = (str(x) for x in rbd_loc)
ceph_cfg_file = CONF.glance_store.rbd_store_ceph_conf
LOG.info(
_LI("Deleting %(dest_url)s of %(image_id)s from RBD") % {
'dest_url': dest_url,
'image_id': image_id
})
with rados.Rados(conffile=ceph_cfg_file) as cluster:
with cluster.open_ioctx(str(pool)) as ioctx:
try:
# First remove snapshot.
if snapshot is not None:
with rbd.Image(ioctx, image_name) as image:
try:
if image.is_protected_snap(snapshot):
image.unprotect_snap(snapshot)
# image.unlock('glance')
image.remove_snap(snapshot)
except rbd.ImageBusy:
reason = _("snapshot %(image)s@%(snap)s could "
"not be unprotected because it is "
"in use") % {
'image': image_name,
'snap': snapshot
}
LOG.debug(reason)
raise store_exceptions.InUseByStore()
except rbd.ImageNotFound:
# Not an issue if it does not have snapshots
pass
# Then delete image.
# Note: A caching may be in progress on other controller
# when glance-api is started because sometimes glance-api
# process is not cleanly stopped and a 'rbd import' process
# keeps our image in use for some time - we just have to
# patiently wait here
retry_cnt = _WAIT_FOR_IMAGE_RELEASE
while True:
try:
rbd.RBD().remove(ioctx, image_name)
break
except rbd.ImageBusy:
if retry_cnt <= 0:
raise
else:
retry_cnt -= 5
reason = _("image %(image)s could not be "
"removed because it is in use, "
"waiting %(time)s seconds for its "
"release") % {
'image': image_name,
'time': retry_cnt
}
LOG.debug(reason)
time.sleep(5)
except rbd.ImageNotFound:
# If it does not exist then that's good!
pass
except rbd.ImageBusy:
reason = _("image %s could not be removed "
"because it is in use")
LOG.debug(reason % image_name)
raise store_exceptions.InUseByStore()
