From 71f9d9555e0909cbc878d8852cd2c2243abd0b1c Mon Sep 17 00:00:00 2001
From: Elena Taivan <elena.taivan@windriver.com>
Date: Wed, 6 Jun 2018 09:41:42 +0000
Subject: [PATCH 1/1] Add glance schedule greenthreads

---
 glance_store/_drivers/filesystem.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/glance_store/_drivers/filesystem.py b/glance_store/_drivers/filesystem.py
index 5de011d..4a26d10 100644
--- a/glance_store/_drivers/filesystem.py
+++ b/glance_store/_drivers/filesystem.py
@@ -23,6 +23,7 @@ import hashlib
 import logging
 import os
 import stat
+import time
 
 import jsonschema
 from oslo_config import cfg
@@ -685,6 +686,8 @@ class Store(glance_store.driver.Store):
                     if verifier:
                         verifier.update(buf)
                     f.write(buf)
+            # Give other greenthreads a chance to schedule.
+            time.sleep(0)
         except IOError as e:
             if e.errno != errno.EACCES:
                 self._delete_partial(filepath, image_id)
-- 
1.8.3.1