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Difference between revisions of "Cinder"

(Configuring devstack to use your driver and backend)
(PTG and Summit Meeting Summaries)
 
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'''Note:''' The wiki.openstack.org pages are for development team collaboration and documentation. If you are looking for official project documentation, please go to https://docs.openstack.org/cinder/latest/.
  
= OpenStack Block Storage ("Cinder") =
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'''Official Title:''' OpenStack Block Storage Cinder<br />
  
{| border="1" cellpadding="2" cellspacing="0"
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'''PTL:''' Brian Rosmaita <rosmaita daht fossdev at gmail d0t com><br />
|  [[https://launchpad.net/cinder/ Cinder on launchpad (including bug tracker and blueprints)]]
 
|-
 
|  [[https://github.com/openstack/cinder Source code]]
 
|-
 
|  [[http://docs.openstack.org/developer/cinder/ Developer docs]]
 
|-
 
|  [[http://docs.openstack.org/grizzly/openstack-block-storage/admin/content/ OpenStack Block Storage Service Administration Guide]]
 
|}
 
  
== Related projects ==
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'''Mission Statement:''' <blockquote>To implement services and libraries to provide on demand, self-service access to Block Storage resources.  Provide Software Defined Block Storage via abstraction and automation on top of various traditional backend block storage devices.</blockquote>
* Python Cinder client
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* Block Storage API documentation
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== Description ==
 +
Cinder is a Block Storage service for OpenStack.  It's designed to present storage resources to end users that can be consumed by the OpenStack Compute Project (Nova).  This is done through the use of either a reference implementation (LVM) or plugin drivers for other storage. The short description of Cinder is that it virtualizes the management of block storage devices and provides end users with a self service API to request and consume those resources without requiring any knowledge of where their storage is actually deployed or on what type of device.
 +
 
 +
== Documentation ==
 +
See https://docs.openstack.org/cinder
 +
 
 +
== Core Team ==
 +
See [https://review.openstack.org/#/admin/groups/83,members current members].
 +
 
 +
== Project Meetings ==
 +
See [[CinderMeetings|Meetings/Cinder]].
 +
 
 +
== Getting in Touch ==
 +
We use the [http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-discuss openstack-discuss@lists.openstack.org] mailing list for discussions using subjects with the prefix "[cinder]".
 +
* Mailing list archive: http://lists.openstack.org/pipermail/openstack-discuss/
 +
* For discussions prior to Mon Nov 19 00:04:26 UTC 2018, see the old "dev list" archive: http://lists.openstack.org/pipermail/openstack-dev/
  
== What is Cinder ? ==
 
  
Cinder provides an infrastructure for managing volumes in OpenStack. It was originally a Nova component called nova-volume, but has become an independent project since the Folsom release.
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We also hang out on IRC in #openstack-cinder on freenode.
 +
* IRC logs are available in: [http://eavesdrop.openstack.org/irclogs/%23openstack-cinder/ http://eavesdrop.openstack.org/irclogs/#openstack-cinder/]
  
== Reasoning: ==
+
== Related projects ==
# Nova is currently a very large project; managing all of the dependencies in linkages of services within Nova can make the  ability to advance new features and functionality very difficult.
+
* [https://github.com/openstack/python-cinderclient Python Cinder client]
# As a result of the many components and dependencies in Nova, it's difficult for anybody to really have a complete view of Nova and to be a true expert. This makes the job of core team member on Nova very difficult, and inhibits good thorough reviews of bug and blueprint submissions.
+
* [https://wiki.openstack.org/wiki/CinderBrick Brick]
# Block storage is a critical component of [[OpenStack]], as such it warrants focused and dedicated attention.
 
# Having Block Storage as a dedicated core project in [[OpenStack]] enables the ability to greatly improve functionality and reliability of the block storage component of [[OpenStack]]
 
  
== Documents: ==
+
== Core Volume Drivers ==
* Cinder deep dive (updated for Grizzly): [[File:cinder-grizzly-deep-dive-pub.pdf]]
+
For a list of the core drivers in each OpenStack release and the volume operations they support, see https://docs.openstack.org/cinder/latest/reference/support-matrix.html
  
== Minimum Driver Features ==
+
== Contributing Code ==
See [https://github.com/openstack/cinder/blob/master/doc/source/devref/drivers.rst driver dev docs]
+
For any new features, significant code changes, new drivers, or major bug fixes, please add a release note along with your patch. See the [http://docs.openstack.org/developer/reno/usage.html#creating-new-release-notes Reno Documentation] for details on how to generate new release notes.
  
=== Keeping consistant with multi backend ===
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=== How To Contribute A Driver ===
In order to maintain consistency with multi backend, do not directly use FLAGS.my_flag, instead use the self.configuration that is provided to the volume drivers. If this does not exist, look @ lvm.py and add it to your driver. using FLAGS.my_flag instead of self.configuration.my_flag will cause multi backend to not work properly. Multi backend relies on the configurations to be within a specific config group in the config file, and the self.configuration abstracts that away from the drivers.
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See [https://wiki.openstack.org/wiki/Cinder/how-to-contribute-a-driver How to contribute a driver]
  
== Keeping informed and providing '''CONSTRUCTIVE INPUT''' ==
+
NOTE: For people working on getting their CI to handle Python 3, see [https://wiki.openstack.org/wiki/Cinder/3rdParty-drivers-py3-update Cinder Third Party CI update to Python 3.7]
The Cinder team currently meets on a weekly basis in #openstack-meeting at 16:00 UTC on Wednesdays.  I try to keep the meetings wiki agenda page http://wiki.openstack.org/CinderMeetings up to date and follow it.  Also keep in mind that '''anybody''' is able to add/suggest agenda items via the meeting wiki page.
 
  
Of course, there's also IRC... a number of us monitor #openstack-cinder or you can always send a PM to jgriffith (that's me)
+
=== How To Contribute A New Feature ===
 +
See [https://wiki.openstack.org/wiki/Cinder/how-to-contribute-new-feature How to contribute a new feature]
  
== Concerns from the community: ==
+
== Sample cinder.conf ==
=== Compatibility and Migration: ===
+
The cinder.conf.sample is no longer maintained and tested in the source treeCurrently you can obtain a copy by running the command 'tox -e genconfig' in a cloned version of the Cinder project and then look in etc/cinder/ for the cinder.conf.sample file.
There has been a significant amount of concern raised regarding "compatibility"; unfortunately this seems to mean different things to different peopleFor those that haven't looked at the Cinder code or tried a demo in devstack, here are some question/answers:
 
  
* Do the same nova client commands I use for volumes today still work the same? '''YES'''
+
The newly generated file will have all options in the Cinder project, driver options included.
* Do the same euca2ools that I use for volumes today still work the same? '''YES'''
 
* Does block storage still work the same as it does today in terms of LVM, iSCSI and the drivers that are curently in place? '''YES'''
 
* Are the associated database tables the same as they are in the current nova volume code?  '''For the most part YES, all volume related tables and columns are migrated, non-volume related tables however are not present'''
 
* Does it use the same nova database as we use today? '''No, it does require a new independent database'''
 
* Are you going to implement cinder with complete disregard for my current install and completely change everything out from under me?  '''ABSOLUTELY NOT'''
 
* Are you going to test migrating from nova-vol to Cinder? '''YES'''
 
* Are those migration tests going to be done just using fakes/unit tests?  '''NO, we would require running setups, most likely devstack'''
 
* Are you planning to provide migration scripts/tools to move from nova to cinder?  '''YES'''
 
  
=== Additional thoughts to keep in mind: ===
+
Additionally, the generated file is available in the Cinder documentation:
* The Cinder core team is fortunate enough to have a number of members who currently work for companies that are using [[OpenStack]] in production environments. There is a strong representation and the concerns of Providers is in fact a major consideration
+
https://docs.openstack.org/cinder/latest/configuration/block-storage/samples/cinder.conf.html
* The goal is '''NOT''' to throw away nova-volume as it is today, but to separate it, focus on it and improve it.
 
* Migration is one of the top priorities for introduction of Cinder into Folsom (regardless of whether nova-volume is still in place or not). This is something that is just considered a part of the requirements for the project.
 
  
== Cinder Core Drivers ==
+
== Resources ==
For a list of the core drivers in each OpenStack release and the volume operations they support, see https://wiki.openstack.org/wiki/CinderSupportMatrix
+
===Etherpads===
 +
====Active====
 +
*[https://etherpad.openstack.org/p/cinder-spec-review-tracking Spec Review Tracking]
 +
*[https://etherpad.openstack.org/p/cinder-outreachy-project-ideas Outreachy Project Ideas]
 +
*[https://etherpad.openstack.org/p/cinder-default-iscsihelper-lio Default iscsihelper LIO]
  
== Notes About Submitting Patches ==
 
Everyone is welcome to sign the CLA and submit code.  Please be sure you familiarize yourself with the "how to contribute guide" (https://wiki.openstack.org/wiki/How_To_Contribute#If_you.27re_a_developer).
 
  
Keep in mind, there is a disproportionate number of submitters to reviewers. YOU can help with this!!  Anybody is welcome to review patches, jump in, give a review. It's a great way to learn more about the code and to help you make better submissions in the future. It also helps your karma, when you submit a patch if you're an active reviewer core team members are more likely to notice your patch and give it some attention before some others.
+
====Historic====
 +
*[https://etherpad.openstack.org/p/cinder-nova-api-changes Cinder/Nova API Changes]
 +
*[https://etherpad.openstack.org/p/newton-cinder-midcycle Newton Midcycle]
 +
*[https://etherpad.openstack.org/p/newton-cinder-summit-ideas Newton Summit Ideas]
 +
*[https://etherpad.openstack.org/p/cinder-mataka-release-final-push Mitaka Final Push]
 +
*[https://etherpad.openstack.org/p/mitaka-cinder-spec-review-tracking Mitaka Spec Review Tracking]
 +
*[https://etherpad.openstack.org/p/mitaka-cinder-midcycle Mitaka Midcycle Meetup- Planning]
 +
*[https://etherpad.openstack.org/p/cinder-mitaka-summit-topics Mitaka Summit- Planning]
 +
*[https://etherpad.openstack.org/p/cinder-meetup-summer-2015 Liberty Midcycle Meetup- Notes]
 +
*[https://etherpad.openstack.org/p/cinder-liberty-midcycle-meetup Liberty Midcycle Meetup- Planning]
  
== Cinder Plugins ==
+
=== Review Links ===
How to submit a plugin/driver: https://wiki.openstack.org/wiki/Cinder/how-to-contribute-a-driver
+
* [https://review.openstack.org/#/dashboard/?foreach=%28project%3Aopenstack%2Fcinder+OR%0Aproject%3Aopenstack%2Fpython%2Dcinderclient+OR%0Aproject%3Aopenstack%2Fpython%2Dbrick%2Dcinderclient%2Dext+OR%0Aproject%3Aopenstack%2Fos%2Dbrick+OR%0Aproject%3Aopenstack%2Fcinderlib%29+status%3Aopen&title=Cinder+Priorities+Dashboard&High+Priority+Changes=label%3AReview%2DPriority%3D2&Priority+Changes=label%3AReview%2DPriority%3D1&Blocked+Reviews=label%3AReview%2DPriority%3D%2D1 Cinder Priority Reviews Dashboard]
 +
* [https://review.openstack.org/#/dashboard/?foreach=%28project%3Aopenstack%2Fcinder+OR%0Aproject%3Aopenstack%2Fpython%2Dcinderclient+OR%0Aproject%3Aopenstack%2Fos%2Dbrick+OR%0Aproject%3Aopenstack%2Fcinderlib+OR%0Aproject%3Aopenstack%2Fpython%2Dbrick%2Dcinderclient%2Dext+OR%0Aproject%3Aopenstack%2Fcinder%2Dspecs%29+status%3Aopen&title=Cinder+Review+Dashboard&Cinder+Specs=project%3Aopenstack%2Fcinder%2Dspecs&Needs+Final+%2B2=label%3ACode%2DReview%3E%3D2+NOT+label%3ACode%2DReview%3C%3D%2D2+NOT+reviewedby%3Aself&Small+Patches=NOT+label%3ACode%2DReview%3C%3D%2D1%2Ccinder%2Dcore+delta%3A%3C%3D10&Bug+Fixes+without+Negative+Feedback=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+NOT+owner%3Aself+limit%3A50+branch%3Amaster+topic%3A%5Ebug.%2A+NOT+reviewedby%3Aself&Blueprints+without+Negative+Feedback=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3AVerified%3E%3D1+NOT+owner%3Aself+NOT+label%3ACode%2DReview%3C%3D%2D1+NOT+label%3ACode%2DReview%3E%3D2+limit%3A50+branch%3Amaster+topic%3A%5Ebp.%2A+NOT+reviewedby%3Aself&Without+Negative+Feedback=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3AVerified%3E%3D1+NOT+owner%3Aself+NOT+label%3ACode%2DReview%3C%3D%2D1+NOT+label%3ACode%2DReview%3E%3D2+limit%3A50+branch%3Amaster+NOT+topic%3A%5Ebug.%2A+NOT+topic%3A%5Ebp.%2A+NOT+reviewedby%3Aself&5+Days+Without+Feedback=NOT+label%3ACode%2DReview%3C%3D%2D1+NOT+label%3ACode%2DReview%3E%3D1+NOT+is%3Areviewed+age%3A5d&Own+Patches=owner%3Aself&Patches+I+%2D2%27d=label%3ACode%2DReview%3C%3D%2D2%2Cself&Stable+Branches=branch%3A%5Estable%2F.%2A+NOT+reviewedby%3Aself Cinder Projects Review Inbox]
 +
* [https://bugs.launchpad.net/cinder/+bugs?field.searchtext=&orderby=-importance&search=Search&field.status%3Alist=INPROGRESS&assignee_option=any&field.assignee=&field.bug_reporter=&field.bug_commenter=&field.subscriber=&field.structural_subscriber=&field.tag=-drivers&field.tags_combinator=ANY&field.has_cve.used=&field.omit_dupes.used=&field.omit_dupes=on&field.affects_me.used=&field.has_patch.used=&field.has_branches.used=&field.has_no_branches.used=&field.has_blueprints.used=&field.has_no_blueprints.used= In progress bugs]
 +
* [https://bugs.launchpad.net/cinder/+bugs?field.searchtext=&orderby=-importance&search=Search&field.status%3Alist=NEW&assignee_option=any&field.assignee=&field.bug_reporter=&field.bug_commenter=&field.subscriber=&field.structural_subscriber=&field.tag=-drivers&field.tags_combinator=ANY&field.has_cve.used=&field.omit_dupes.used=&field.omit_dupes=on&field.affects_me.used=&field.has_patch.used=&field.has_branches.used=&field.has_no_branches.used=&field.has_blueprints.used=&field.has_no_blueprints.used= New bugs]
 +
* Stable Branches Reviews
 +
** [https://review.openstack.org/#/dashboard/?foreach=%28project%3Aopenstack%2Fcinder+OR%0Aproject%3Aopenstack%2Fpython%2Dcinderclient+OR%0Aproject%3Aopenstack%2Fos%2Dbrick+OR%0Aproject%3Aopenstack%2Fcinderlib+OR%0Aproject%3Aopenstack%2Fpython%2Dbrick%2Dcinderclient%2Dext%29+status%3Aopen%0A%28branch%3A%5Edriverfixes%2F.%2A+OR%0Abranch%3A%5Estable%2F.%2A%29&title=Cinder+Project%3A+All+Stable+and+Driverfix+Branches&Needs+Final+%2B2=label%3ACode%2DReview%3E%3D2+NOT+label%3ACode%2DReview%3C%3D%2D2&Without+Negative+Feedback=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3AVerified%3E%3D1+NOT+owner%3Aself+NOT+label%3ACode%2DReview%3C%3D%2D1+NOT+label%3ACode%2DReview%3E%3D2+limit%3A50&Probably+Not=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3ACode%2Dreview%3C%3D%2D1+NOT+owner%3Aself+limit%3A50&Own+Patches=owner%3Aself&Patches+I+%2D2%27d=label%3ACode%2DReview%3C%3D%2D2%2Cself all stable and driverfix branches]
 +
** [https://review.openstack.org/#/dashboard/?foreach=%28project%3Aopenstack%2Fcinder+OR%0Aproject%3Aopenstack%2Fpython%2Dcinderclient+OR%0Aproject%3Aopenstack%2Fos%2Dbrick+OR%0Aproject%3Aopenstack%2Fcinderlib+OR%0Aproject%3Aopenstack%2Fpython%2Dbrick%2Dcinderclient%2Dext%29%0Astatus%3Aopen%0Abranch%3Astable%2Fstein&title=Cinder+stable%2Fstein+Reviews&Needs+Final+%2B2=label%3ACode%2DReview%3E%3D2+NOT+label%3ACode%2DReview%3C%3D%2D2&Without+Negative+Feedback=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3AVerified%3E%3D1+NOT+owner%3Aself+NOT+label%3ACode%2DReview%3C%3D%2D1+NOT+label%3ACode%2DReview%3E%3D2+limit%3A50&Probably+Not=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3ACode%2Dreview%3C%3D%2D1+NOT+owner%3Aself+limit%3A50&Own+Patches=owner%3Aself&Patches+I+%2D2%27d=label%3ACode%2DReview%3C%3D%2D2%2Cself stable/stein only]
 +
** [https://review.openstack.org/#/dashboard/?foreach=%28project%3Aopenstack%2Fcinder+OR%0Aproject%3Aopenstack%2Fpython%2Dcinderclient+OR%0Aproject%3Aopenstack%2Fos%2Dbrick+OR%0Aproject%3Aopenstack%2Fcinderlib+OR%0Aproject%3Aopenstack%2Fpython%2Dbrick%2Dcinderclient%2Dext%29%0Astatus%3Aopen%0Abranch%3Astable%2Frocky&title=Cinder+stable%2Frocky+Reviews&Needs+Final+%2B2=label%3ACode%2DReview%3E%3D2+NOT+label%3ACode%2DReview%3C%3D%2D2&Without+Negative+Feedback=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3AVerified%3E%3D1+NOT+owner%3Aself+NOT+label%3ACode%2DReview%3C%3D%2D1+NOT+label%3ACode%2DReview%3E%3D2+limit%3A50&Probably+Not=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3ACode%2Dreview%3C%3D%2D1+NOT+owner%3Aself+limit%3A50&Own+Patches=owner%3Aself&Patches+I+%2D2%27d=label%3ACode%2DReview%3C%3D%2D2%2Cself stable/rocky only]
 +
** [https://review.openstack.org/#/dashboard/?foreach=%28project%3Aopenstack%2Fcinder+OR%0Aproject%3Aopenstack%2Fpython%2Dcinderclient+OR%0Aproject%3Aopenstack%2Fos%2Dbrick+OR%0Aproject%3Aopenstack%2Fcinderlib+OR%0Aproject%3Aopenstack%2Fpython%2Dbrick%2Dcinderclient%2Dext%29%0Astatus%3Aopen%0Abranch%3Astable%2Fqueens&title=Cinder+stable%2Fqueens+Reviews&Needs+Final+%2B2=label%3ACode%2DReview%3E%3D2+NOT+label%3ACode%2DReview%3C%3D%2D2&Without+Negative+Feedback=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3AVerified%3E%3D1+NOT+owner%3Aself+NOT+label%3ACode%2DReview%3C%3D%2D1+NOT+label%3ACode%2DReview%3E%3D2+limit%3A50&Probably+Not=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3ACode%2Dreview%3C%3D%2D1+NOT+owner%3Aself+limit%3A50&Own+Patches=owner%3Aself&Patches+I+%2D2%27d=label%3ACode%2DReview%3C%3D%2D2%2Cself stable/queens only]
 +
** [https://review.openstack.org/#/dashboard/?foreach=%28project%3Aopenstack%2Fcinder+OR%0Aproject%3Aopenstack%2Fpython%2Dcinderclient+OR%0Aproject%3Aopenstack%2Fos%2Dbrick+OR%0Aproject%3Aopenstack%2Fcinderlib+OR%0Aproject%3Aopenstack%2Fpython%2Dbrick%2Dcinderclient%2Dext%29+status%3Aopen%0A%28branch%3A%5Edriverfixes%2F.%2A+OR%0Abranch%3Astable%2Focata+OR%0Abranch%3Astable%2Fpike%29&title=Cinder+Extended+Maintenance+Branches+Reviews&Needs+Final+%2B2=label%3ACode%2DReview%3E%3D2+NOT+label%3ACode%2DReview%3C%3D%2D2&Without+Negative+Feedback=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3AVerified%3E%3D1+NOT+owner%3Aself+NOT+label%3ACode%2DReview%3C%3D%2D1+NOT+label%3ACode%2DReview%3E%3D2+limit%3A50&Probably+Not=NOT+label%3AWorkflow%3E%3D1+NOT+label%3AWorkflow%3C%3D%2D1+label%3ACode%2Dreview%3C%3D%2D1+NOT+owner%3Aself+limit%3A50&Own+Patches=owner%3Aself&Patches+I+%2D2%27d=label%3ACode%2DReview%3C%3D%2D2%2Cself extended maintenance (including driverfixes) only]
  
The following plugins (from other sources) are avaialble for this project
+
=== PTG and Summit Meeting Summaries ===
* [https://wiki.openstack.org/wiki/Mellanox-Cinder Mellanox Cinder Plugin] Mellanox Cinder Plugin
+
*[[CinderVictoriaPTGSummary|Victoria PTG Summary]]
 +
*[[CinderUssuriMidCycleSummary|Ussuri Mid-Cycle Summary]]
 +
*[[CinderUssuriPTGSummary|Ussuri PTG Summary]]
 +
*[[CinderTrainMidCycleSummary|Train Mid-Cycle Summary]]
 +
*[[CinderTrainSummitandPTGSummary|Train Summit and PTG Summary]]
 +
*[[CinderSteinMidCycleSummary|Stein Mid-Cycle Summary]]
 +
*[[CinderSteinPTGSummary|Stein PTG Summary]]
 +
*[[VancouverSummit2018Summary|Vancouver Summit 2018 Summary]]
 +
*[[CinderRockyPTGSummary|Rocky PTG Summary]]
 +
*[[CinderQueensPTGSummary|Queens PTG Summary]]
 +
*[[CinderPikePTGSummary|Pike PTG Summary]]
  
== Configuring devstack to use your driver and backend ==
+
=== Cinder YouTube Channel ===
One of the things you'll be required to do when submitting a new driver is running your backend and driver in a devstack environment and executing the tempest volume tests against it.  Currently we provide a driver_cert wrapper (mentioned in the how-to-contribute-a-driver section).  One thing that causes some confusion is how to I configure devstack to use my backend device.  It used to be that your driver info would have to be added to lib/cinder in devstack to set your options.  We then created a cinder/plugin module in devstack. Fortunately though it's MUCH easier than that. For *most* drivers, the only changes that are made consist of cinder.conf file changes.  That can easily be accomplished by using devstacks local.conf file (more info here: http://devstack.org/configuration.html).  For more complex actions (like the need to install packages etc, the plugin directory in devstack can be used).  An example of what this file would look like to add driver FOO is shown below, the default localrc section is included for completeness, but the section of interest is the post-config cinder.conf section:
+
* [https://www.youtube.com/channel/UCJ8Koy4gsISMy0qW3CWZmaQ/videos Midcycle/PTG Videos and Related Content]
  
<nowiki>[[local|localrc]]</nowiki><br />
+
[[Category: Cinder]]
<sub>:# Passwords<br />
 
:ADMIN_PASSWORD=password<br />
 
:MYSQL_PASSWORD=password<br />
 
:RABBIT_PASSWORD=password<br />
 
:SERVICE_PASSWORD=password<br />
 
:SERVICE_TOKEN=password<br />
 
:SCREEN_LOGDIR=/opt/stack/logs<br />
 
:HOST_IP=172.16.140.246<br />
 
:disable_service n-net<br />
 
:enable_service q-svc<br />
 
:enable_service q-agt<br />
 
:enable_service q-dhcp<br />
 
:enable_service q-l3<br />
 
:enable_service q-meta<br />
 
:enable_service neutron<br />
 
:<br />
 
:<nowiki># Disable security groups entirely<br /></nowiki>
 
:Q_USE_SECGROUP=False<br />
 
:LIBVIRT_FIREWALL_DRIVER=nova.virt.firewall.NoopFirewallDriver<br />
 
:CINDER_SECURE_DELETE=False<br />
 
:<br />
 
:<nowiki>[[post-config|$CINDER_CONF]]</nowiki><br />
 
:volume_driver = cinder.volume.drivers.foo.FooDriver<br />
 
:foos_var = something<br />
 
:another_foo_var = something-else</sub><br />
 
<br />
 

Latest revision as of 15:48, 16 June 2020

Note: The wiki.openstack.org pages are for development team collaboration and documentation. If you are looking for official project documentation, please go to https://docs.openstack.org/cinder/latest/.

Official Title: OpenStack Block Storage Cinder

PTL: Brian Rosmaita <rosmaita daht fossdev at gmail d0t com>

Mission Statement:
To implement services and libraries to provide on demand, self-service access to Block Storage resources. Provide Software Defined Block Storage via abstraction and automation on top of various traditional backend block storage devices.

Description

Cinder is a Block Storage service for OpenStack. It's designed to present storage resources to end users that can be consumed by the OpenStack Compute Project (Nova). This is done through the use of either a reference implementation (LVM) or plugin drivers for other storage. The short description of Cinder is that it virtualizes the management of block storage devices and provides end users with a self service API to request and consume those resources without requiring any knowledge of where their storage is actually deployed or on what type of device.

Documentation

See https://docs.openstack.org/cinder

Core Team

See current members.

Project Meetings

See Meetings/Cinder.

Getting in Touch

We use the openstack-discuss@lists.openstack.org mailing list for discussions using subjects with the prefix "[cinder]".


We also hang out on IRC in #openstack-cinder on freenode.

Related projects

Core Volume Drivers

For a list of the core drivers in each OpenStack release and the volume operations they support, see https://docs.openstack.org/cinder/latest/reference/support-matrix.html

Contributing Code

For any new features, significant code changes, new drivers, or major bug fixes, please add a release note along with your patch. See the Reno Documentation for details on how to generate new release notes.

How To Contribute A Driver

See How to contribute a driver

NOTE: For people working on getting their CI to handle Python 3, see Cinder Third Party CI update to Python 3.7

How To Contribute A New Feature

See How to contribute a new feature

Sample cinder.conf

The cinder.conf.sample is no longer maintained and tested in the source tree. Currently you can obtain a copy by running the command 'tox -e genconfig' in a cloned version of the Cinder project and then look in etc/cinder/ for the cinder.conf.sample file.

The newly generated file will have all options in the Cinder project, driver options included.

Additionally, the generated file is available in the Cinder documentation: https://docs.openstack.org/cinder/latest/configuration/block-storage/samples/cinder.conf.html

Resources

Etherpads

Active


Historic

Review Links

PTG and Summit Meeting Summaries

Cinder YouTube Channel