Fix poor volume creation performance from glance images
Fixed glance uploads on poor write performing systems: give other greenthreads a chance to schedule. Story: 2002893 Task: 22856 Change-Id: I70c192f1c72d8bb1a9f9b7a0fd2545c49c3acb46 Signed-off-by: Jack Ding <jack.ding@windriver.com>
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@ -0,0 +1,32 @@
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From fc9b9d397b503eeff6585310d8de177b051a11e9 Mon Sep 17 00:00:00 2001
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From: Elena Taivan <elena.taivan@windriver.com>
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Date: Wed, 6 Jun 2018 10:02:56 +0000
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Subject: [PATCH 1/1] meta Add glance schedulre greenthreads
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---
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SPECS/python-glance-store.spec | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/SPECS/python-glance-store.spec b/SPECS/python-glance-store.spec
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index 0c0d728..977b2bc 100644
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--- a/SPECS/python-glance-store.spec
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+++ b/SPECS/python-glance-store.spec
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@@ -16,6 +16,7 @@ Source0: https://tarballs.openstack.org/%{upstream_name}/%{upstream_name}
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# WRS
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Patch0001: 0001-Check-ceph-cluster-free-space-before-creating-image.patch
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Patch0002: 0002-Add-glance-driver.patch
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+Patch0003: 0003-Add-glance-schedule-greenthreads.patch
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BuildArch: noarch
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@@ -90,6 +91,7 @@ Requires: python3-oslo-privsep >= 1.9.0
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# Apply WRS patches
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%patch0001 -p1
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%patch0002 -p1
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+%patch0003 -p1
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%build
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%py2_build
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--
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1.8.3.1
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@ -1,3 +1,4 @@
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0001-Update-package-versioning-for-TIS-format.patch
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0002-meta-patch-Check-ceph-cluster-free-space.patch
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0003-meta-patch-Glance-Driver.patch
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0004-meta-Add-glance-schedulre-greenthreads.patch
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@ -0,0 +1,33 @@
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From 71f9d9555e0909cbc878d8852cd2c2243abd0b1c Mon Sep 17 00:00:00 2001
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From: Elena Taivan <elena.taivan@windriver.com>
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Date: Wed, 6 Jun 2018 09:41:42 +0000
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Subject: [PATCH 1/1] Add glance schedule greenthreads
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---
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glance_store/_drivers/filesystem.py | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/glance_store/_drivers/filesystem.py b/glance_store/_drivers/filesystem.py
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index 5de011d..4a26d10 100644
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--- a/glance_store/_drivers/filesystem.py
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+++ b/glance_store/_drivers/filesystem.py
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@@ -23,6 +23,7 @@ import hashlib
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import logging
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import os
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import stat
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+import time
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import jsonschema
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from oslo_config import cfg
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@@ -685,6 +686,8 @@ class Store(glance_store.driver.Store):
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if verifier:
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verifier.update(buf)
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f.write(buf)
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+ # Give other greenthreads a chance to schedule.
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+ time.sleep(0)
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except IOError as e:
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if e.errno != errno.EACCES:
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self._delete_partial(filepath, image_id)
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--
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1.8.3.1
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