8ca13afc49
This will now require a separate section "Use Cases". This was originally within "Problem description", but use cases seems to be missed when it was filled out. This will hopefully improve spec submission. Change-Id: I3615ca5ff5c46851e682739a8343242e2f1b0a8d
154 lines
3.6 KiB
ReStructuredText
154 lines
3.6 KiB
ReStructuredText
..
|
|
This work is licensed under a Creative Commons Attribution 3.0 Unported
|
|
License.
|
|
|
|
http://creativecommons.org/licenses/by/3.0/legalcode
|
|
|
|
==========================================
|
|
Extending IBMNAS driver to support NAS based GPFS storage deployments
|
|
==========================================
|
|
|
|
https://blueprints.launchpad.net/cinder/+spec/add-gpfs-nas-to-ibmnas
|
|
|
|
Currently, the ibmnas driver works for an nfs export from Storwize V7000
|
|
Unified and SONAS products. It does not have the capability to work with
|
|
nfs exports provided from a gpfs server.
|
|
|
|
|
|
Problem description
|
|
===================
|
|
|
|
Currently, the ibmnas driver does not have the capability to work with nfs
|
|
exports provided from a gpfs server.
|
|
|
|
* Lacking this capability will limit the end users from using remote gpfs
|
|
NAS servers as a backend in OpenStack environment.
|
|
|
|
Use Cases
|
|
=========
|
|
|
|
Proposed change
|
|
===============
|
|
|
|
* Add/Reuse functions in ibmnas.py to support all minimum features listed
|
|
(github.com/openstack/cinder/blob/master/doc/source/devref/drivers.rst)
|
|
for NAS based GPFS server backends.
|
|
|
|
|
|
Alternatives
|
|
------------
|
|
|
|
The existing gpfs driver can be extended to support NAS based gpfs storage
|
|
deployments. But this implementation requires many other new funtions to be
|
|
introduced, which are already existing and can be reused in ibmnas driver.
|
|
Apart from this in future, we have planned to support all NFS/GPFS related
|
|
IBM products via ibmnas driver. Hence extending ibmnas driver is more
|
|
advantageous than extending gpfs driver.
|
|
|
|
Data model impact
|
|
-----------------
|
|
|
|
None
|
|
|
|
REST API impact
|
|
---------------
|
|
|
|
None
|
|
|
|
Security impact
|
|
---------------
|
|
|
|
No specific security issues needs to be considered. Insecure file permissions
|
|
(OSSN-0014) is fixed in the driver and is addressed by
|
|
https://review.openstack.org/#/c/101919/
|
|
|
|
Notifications impact
|
|
--------------------
|
|
|
|
None
|
|
|
|
Other end user impact
|
|
---------------------
|
|
|
|
None
|
|
|
|
Performance Impact
|
|
------------------
|
|
|
|
None
|
|
|
|
Other deployer impact
|
|
---------------------
|
|
|
|
This requires an additional option to be configured while deploying
|
|
OpenStack with IBMNAS products (sonas, v7ku, gpfs-nas).
|
|
|
|
* New configuration option needs to be filled in cinder.conf
|
|
ibmnas_platform_type = <sonas> | <v7ku> | <gpfs-nas>
|
|
|
|
* This change needs to be explicitly enabled on IBMNAS driver CI certification
|
|
|
|
Developer impact
|
|
----------------
|
|
|
|
None
|
|
|
|
|
|
Implementation
|
|
==============
|
|
|
|
Assignee(s)
|
|
-----------
|
|
|
|
Primary assignee:
|
|
sasikanth <sasikanth.eda@in.ibm.com>
|
|
|
|
Other contributors:
|
|
nilesh-bhosale <nilesh.bhosale@in.ibm.com>
|
|
|
|
Work Items
|
|
----------
|
|
|
|
* Add/Reuse functions in ibmnas.py to support NAS based GPFS storage
|
|
deployments.
|
|
|
|
|
|
Dependencies
|
|
============
|
|
|
|
None
|
|
|
|
|
|
Testing
|
|
=======
|
|
|
|
* Unit tests - Existing test_ibmnas.py will be improved to handle the new
|
|
code changes/functions.
|
|
* Tempest tests - No additional testcases needs to be written, this feature
|
|
can be tested with the existing tempest.
|
|
* Cinder driver certification tests - Driver certification tests will be
|
|
executed and results will be submitted to the community (as the changes will
|
|
altogether enable a new storage platform).
|
|
* CI tests - We are working towards 3rd party CI environment and will
|
|
continuously run tests across the respective hardware platform.
|
|
|
|
|
|
Documentation Impact
|
|
====================
|
|
|
|
ibmnas driver documentation needs to updated with this new configuration
|
|
option.
|
|
|
|
ibmnas_platform_type = <sonas> | <v7ku> | <gpfs-nas>
|
|
|
|
This option is used for selecting the appropriate backend storage.
|
|
Valid values are v7ku for using IBM Storwize V7000 Unified
|
|
sonas for using IBM Scale Out NAS and
|
|
gpfs-nas for using NAS based GPFS server deployment
|
|
|
|
|
|
References
|
|
==========
|
|
|
|
None
|