Bug 1168371 – [RFE][glance]: Glance Swift Store to use Multiple Containers for Storing Images

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Bug 1168371 - [RFE][glance]: Glance Swift Store to use Multiple Containers for Storing Images

Summary:	[RFE][glance]: Glance Swift Store to use Multiple Containers for Storing Images

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat OpenStack
Classification:	Red Hat
Component:	openstack-glance (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	Unspecified Unspecified

Priority	high Severity high
Target Milestone:	Upstream M1
Target Release:	7.0 (Kilo)
Assigned To:	Flavio Percoco
QA Contact:	Prasanth Anbalagan
Docs Contact:

URL:	https://blueprints.launchpad.net/glan...
Whiteboard:	upstream_milestone_kilo-1 upstream_de...
Keywords:	FutureFeature, Triaged

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2014-11-26 12:51 EST by RHOS Integration
Modified:	2016-04-26 19:44 EDT (History)
CC List:	7 users (show)

See Also:
Fixed In Version:
Doc Type:	Enhancement
Doc Text:	Previously, Image service's 'swift' store implementation stored all images on a single container. While this worked well, it created a performance bottleneck in large scale deployments. With this update, it is now possible to use several Object Storage containers as storage for the 'glance' images. In order to use this feature, you need to set 'swift_store_multiple_containers_seed' to a value bigger than '0'. You can disable using multiple containers by enabling the 'swift_uer_multi_tenant' parameter, as these containers are split on a per-tenant basis.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2015-08-05 09:19:09 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHEA-2015:1548	normal	SHIPPED_LIVE	Red Hat Enterprise Linux OpenStack Platform Enhancement Advisory	2015-08-05 13:07:06 EDT

Groups: None (edit)

Description RHOS Integration 2014-11-26 12:51:33 EST

Cloned from launchpad blueprint https://blueprints.launchpad.net/glance/+spec/swift-store-multiple-containers.

Description:

Glance, when configured to use Swift store in Single Tenant Mode, stores images in one container as indicated by the configuration option, swift_store_container. This approach of storing images in ONE container
is subject to performance bottleneck.

Storing images in one container is prone to Swift rate-limiting on containers. Swift is equipped with container rate-limiting that can throttle concurrent POST, PUT and DELETE operations in a single container.
This becomes a serious issue in a large scale deployments especially when coupled with smaller segment sizes.

To reduce/overcome the performance bottleneck, we propose the use of multiple containers for storing images in Single Tenant Mode (this change will not affect Multi Tenant Mode because that setup stores each image in its own container). This leads to increased concurrency of image creation and deletion operations.

Specification URL (additional information):

None

Comment 5 errata-xmlrpc 2015-08-05 09:19:09 EDT

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2015:1548

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