_ImportToStore
import type task
read image properties
create image
/tmp/glance_config_tmp
api_image_import type task
image-create
image-stage
save image to db
image-createfile on horizon
node_staging_uri | [os_glance_staging_store] :/var/lib/glance/staging(filesystem local recommended)
work_dir: /tmp
[task]/work_dir | [os_glance_tasks_store] : /var/lib/glance/images (filesystem)
cache
glance_store
datastore
check properties
_ImportToFS
upload with nfc or sparse image
task_flow
client
write image properties
upload through chunk
glance server
upload to ds
worker_self_reference_url
introspect
Compare the properties
convert
get_vmdk_props
