Glance api server cannot start if default_store is set to 'file'

[Mike Fedosin]

While we were testing new features in Horizon on MOS 6.1 we had to change default_store from 'swift' to 'file' by commenting the last line in glance-api.conf
When we tried to restart the server, it went to endless restart and cannot run. No exceptions were written in glance log, only repeated starting messages.
When we changed 'file' to 'swift' again everything started to work fine. Changing other parameters in the config didn't lead to this behaviour.
Folder /var/lib/glance/images exists and is open for writing.

[Dmitry Mescheryakov (dmitrymex)]

File store is not used in MOS Reference Architecture, hence the bug is invalid.

[Adam Heczko (aheczko-mirantis)]

With MOS 7.0 the following settings works as supposed and allows uploading Glane images directly to controller's filesystem:

stores = glance.store.filesystem.Store
# stores = glance.store.swift.Store,glance.store.http.Store

default_store = file
# default_store = swift

filesystem_store_datadir = /var/lib/glance/images