Open Stack

Hi,

I am writing to see if someone can give me a light on this. I am trying to
make the glance cache prefetcher work on Openstack Kilo but I am getting
below exception.

Context: I use Swift (v2.0.3) as storage backend for images, they are added
correctly to Swift and I can launch instances, but when trying to prefetch
them to the cache, it fails. The value under the image_locations table in
glance DB looks something like this
"swift+http://swift%3Aswift:[PASSWORD]@[HOST]:5000/v2/[GLANCE_ID]"
which seems to be good.

Debuging the prefetcher in another Openstack version (icehouse) I realized
that in Kilo, looks like the swift scheme is not beeing imported nor
registered. I´ve been playing with the "stores" and "default_store"
parameters in the glance-api.conf as well as with the glance-cache.conf
with no luck.

Any comments, suggestions or help will be really appreciated.

Thanks in advance.-


2016-05-20 10:57:04.438 31225 DEBUG glance_store.backend [-] Attempting to
import store glance.store.sheepdog.Store _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.438 31225 DEBUG glance_store.backend [-] Attempting to
import store rbd _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.439 31225 DEBUG glance_store.backend [-] Attempting to
import store http _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.439 31225 DEBUG glance_store.backend [-] Attempting to
import store sheepdog _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.439 31225 DEBUG glance_store.backend [-] Attempting to
import store glance.store.http.Store _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.440 31225 DEBUG glance_store.backend [-] Attempting to
import store s3 _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.440 31225 DEBUG glance_store.backend [-] Attempting to
import store glance.store.gridfs.Store _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.440 31225 DEBUG glance_store.backend [-] Attempting to
import store glance.store.rbd.Store _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.441 31225 DEBUG glance_store.backend [-] Attempting to
import store no_conf _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.441 31225 DEBUG glance_store.backend [-] Attempting to
import store glance.store.cinder.Store _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.442 31225 DEBUG glance_store.backend [-] Attempting to
import store file _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.442 31225 DEBUG glance_store.backend [-] Attempting to
import store gridfs _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.442 31225 DEBUG glance_store.backend [-] Attempting to
import store glance.store.filesystem.Store _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.443 31225 DEBUG glance_store.backend [-] Attempting to
import store cinder _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.443 31225 DEBUG glance_store.backend [-] Attempting to
import store glance.store.swift.Store _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.444 31225 DEBUG glance_store.backend [-] Attempting to
import store swift _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.444 31225 DEBUG glance_store.backend [-] Attempting to
import store glance.store.vmware_datastore.Store _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.444 31225 DEBUG glance_store.backend [-] Attempting to
import store vmware _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.445 31225 DEBUG glance_store.backend [-] Attempting to
import store glance.store.s3.Store _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.445 31225 DEBUG glance_store.backend [-] Registering
options for group glance_store register_opts
/usr/lib/python2.7/dist-packages/glance_store/backend.py:77
2016-05-20 10:57:04.445 31225 DEBUG glance_store.backend [-] Registering
options for group glance_store register_opts
/usr/lib/python2.7/dist-packages/glance_store/backend.py:77
2016-05-20 10:57:04.446 31225 DEBUG glance_store.backend [-] Attempting to
import store http _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.446 31225 DEBUG glance_store.capabilities [-] Store
glance_store._drivers.http.Store doesn't support updating dynamic storage
capabilities. Please overwrite 'update_capabilities' method of the store to
implement updating logics if needed. update_capabilities
/usr/lib/python2.7/dist-packages/glance_store/capabilities.py:98
2016-05-20 10:57:04.447 31225 DEBUG glance_store.backend [-] Registering
store http with schemes ('http', 'https') create_stores
/usr/lib/python2.7/dist-packages/glance_store/backend.py:195
2016-05-20 10:57:04.447 31225 DEBUG glance_store.driver [-] Late loading
location class glance_store._drivers.http.StoreLocation
get_store_location_class
/usr/lib/python2.7/dist-packages/glance_store/driver.py:93
2016-05-20 10:57:04.447 31225 DEBUG glance_store.location [-] Registering
scheme http with {'location_class': <class
'glance_store._drivers.http.StoreLocation'>, 'store':
<glance_store._drivers.http.Store object at 0x7fca125f96d0>, 'store_entry':
'http'} register_scheme_map
/usr/lib/python2.7/dist-packages/glance_store/location.py:90
2016-05-20 10:57:04.448 31225 DEBUG glance_store.location [-] Registering
scheme https with {'location_class': <class
'glance_store._drivers.http.StoreLocation'>, 'store':
<glance_store._drivers.http.Store object at 0x7fca125f96d0>, 'store_entry':
'http'} register_scheme_map
/usr/lib/python2.7/dist-packages/glance_store/location.py:90
2016-05-20 10:57:04.448 31225 DEBUG glance_store.backend [-] Attempting to
import store file _load_store
/usr/lib/python2.7/dist-packages/glance_store/backend.py:148
2016-05-20 10:57:04.448 31225 WARNING oslo_config.cfg [-] Option
"filesystem_store_datadir" from group "DEFAULT" is deprecated. Use option
"filesystem_store_datadir" from group "glance_store".
2016-05-20 10:57:04.449 31225 DEBUG glance_store.capabilities [-] Store
glance_store._drivers.filesystem.Store doesn't support updating dynamic
storage capabilities. Please overwrite 'update_capabilities' method of the
store to implement updating logics if needed. update_capabilities
/usr/lib/python2.7/dist-packages/glance_store/capabilities.py:98
2016-05-20 10:57:04.449 31225 DEBUG glance_store.backend [-] Registering
store file with schemes ('file', 'filesystem') create_stores
/usr/lib/python2.7/dist-packages/glance_store/backend.py:195
2016-05-20 10:57:04.450 31225 DEBUG glance_store.driver [-] Late loading
location class glance_store._drivers.filesystem.StoreLocation
get_store_location_class
/usr/lib/python2.7/dist-packages/glance_store/driver.py:93
2016-05-20 10:57:04.450 31225 DEBUG glance_store.location [-] Registering
scheme file with {'location_class': <class
'glance_store._drivers.filesystem.StoreLocation'>, 'store':
<glance_store._drivers.filesystem.Store object at 0x7fca125f9350>,
'store_entry': 'file'} register_scheme_map
/usr/lib/python2.7/dist-packages/glance_store/location.py:90
2016-05-20 10:57:04.450 31225 DEBUG glance_store.location [-] Registering
scheme filesystem with {'location_class': <class
'glance_store._drivers.filesystem.StoreLocation'>, 'store':
<glance_store._drivers.filesystem.Store object at 0x7fca125f9350>,
'store_entry': 'file'} register_scheme_map
/usr/lib/python2.7/dist-packages/glance_store/location.py:90
2016-05-20 10:57:04.453 31225 INFO glance.image_cache [-] Image cache
loaded driver 'sqlite'.
2016-05-20 10:57:04.455 31225 DEBUG glance.image_cache.prefetcher [-] Found
1 images to prefetch run
/usr/lib/python2.7/dist-packages/glance/image_cache/prefetcher.py:75
2016-05-20 10:57:04.548 31225 DEBUG glance.common.client
[req-be56fb22-9541-4dea-a608-80a07be76dd4 - - - - -] Constructed URL:
http://[HOST]:9191/images/4fa9bccf-a643-477b-8682-4bad469d4c1c
<http://10.181.0.1:9191/images/4fa9bccf-a643-477b-8682-4bad469d4c1c>
_construct_url
/usr/lib/python2.7/dist-packages/glance/common/client.py:401
2016-05-20 10:57:04.624 31225 DEBUG glance.registry.client.v1.client
[req-be56fb22-9541-4dea-a608-80a07be76dd4 - - - - -] Registry request GET
/images/4fa9bccf-a643-477b-8682-4bad469d4c1c HTTP 200 request id
req-6b129abb-948d-4d46-b7cb-98f41377b3e7 do_request
/usr/lib/python2.7/dist-packages/glance/registry/client/v1/client.py:124
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 457,
in fire_timers
    timer()
  File "/usr/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line 58,
in __call__
    cb(*args, **kw)
  File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line
214, in main
    result = function(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/glance/image_cache/prefetcher.py",
line 58, in fetch_image_into_cache
    context=ctx)
  File "/usr/lib/python2.7/dist-packages/glance_store/backend.py", line
269, in get_from_backend
    loc = location.get_location_from_uri(uri, conf=CONF)
  File "/usr/lib/python2.7/dist-packages/glance_store/location.py", line
75, in get_location_from_uri
    raise exceptions.UnknownScheme(scheme=pieces.scheme)
UnknownScheme: Unknown scheme 'swift+http' found in URI
2016-05-20 10:57:04.627 31225 CRITICAL glance
[req-be56fb22-9541-4dea-a608-80a07be76dd4 - - - - -] UnknownScheme: Unknown
scheme 'swift+http' found in URI
2016-05-20 10:57:04.627 31225 TRACE glance Traceback (most recent call
last):
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/bin/glance-cache-prefetcher", line 10, in <module>
2016-05-20 10:57:04.627 31225 TRACE glance     sys.exit(main())
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/lib/python2.7/dist-packages/glance/cmd/cache_prefetcher.py", line 56,
in main
2016-05-20 10:57:04.627 31225 TRACE glance     app.run()
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/lib/python2.7/dist-packages/glance/image_cache/prefetcher.py", line
79, in run
2016-05-20 10:57:04.627 31225 TRACE glance     successes = sum([1 for r in
results if r is True])
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/lib/python2.7/dist-packages/eventlet/greenpool.py", line 238, in next
2016-05-20 10:57:04.627 31225 TRACE glance     val =
self.waiters.get().wait()
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 175, in
wait
2016-05-20 10:57:04.627 31225 TRACE glance     return
self._exit_event.wait()
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/lib/python2.7/dist-packages/eventlet/event.py", line 125, in wait
2016-05-20 10:57:04.627 31225 TRACE glance     current.throw(*self._exc)
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 214, in
main
2016-05-20 10:57:04.627 31225 TRACE glance     result = function(*args,
**kwargs)
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/lib/python2.7/dist-packages/glance/image_cache/prefetcher.py", line
58, in fetch_image_into_cache
2016-05-20 10:57:04.627 31225 TRACE glance     context=ctx)
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/lib/python2.7/dist-packages/glance_store/backend.py", line 269, in
get_from_backend
2016-05-20 10:57:04.627 31225 TRACE glance     loc =
location.get_location_from_uri(uri, conf=CONF)
2016-05-20 10:57:04.627 31225 TRACE glance   File
"/usr/lib/python2.7/dist-packages/glance_store/location.py", line 75, in
get_location_from_uri
2016-05-20 10:57:04.627 31225 TRACE glance     raise
exceptions.UnknownScheme(scheme=pieces.scheme)
*2016-05-20 10:57:04.627 31225 TRACE glance UnknownScheme: Unknown scheme
'swift+http' found in URI*
2016-05-20 10:57:04.627 31225 TRACE glance
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