Alternative Classes -filter, host manager, etc.- for OpenStack's Cinder
Alternative Classes such as filters, host managers, etc. for Cinder, the OpenStack Block Storage service.
The main purpose of this library is to illustrate the broad range of possibilities of the Cinder Scheduler provided by its flexible mechanisms.
Currently there’s only 2 interesting features, which are the possibility of
changing the default provisioning type on volume creation for volumes that
don’t specify the type using the
provisioning:type extra spec and an
alternative calculation of the free space consumption.
Scheduler’s original approach to space consumption by new volumes is conservative to prevent backends from filling up due to a sudden burst of volume creations.
The alternative approach is more aggressive and is adequate for deployments where the workload is well know and a lot of thin volumes could be requested at the same time.
It’s important to notice that even though the Schedulers will be able to
provisioining:type extra spec it will depend on the backend if
this parameter is actually used or not.
- Free software: Apache Software License 2.0
- Documentation: https://alt-cinder-sch.readthedocs.io.
- Can default capacity calculations to thin or thick.
- Less conservative approach to free space consumption calculations.
First we’ll need to have the package installed:
# pip install alt_cinder-sch
Then we’ll have to configure Cinder’s schedulers to use the package:
scheduler_host_manager = alt_cinder_sch.host_managers.HostManagerThin scheduler_default_filters = AvailabilityZoneFilter,AltCapacityFilter,CapabilitiesFilter scheduler_driver = alt_cinder_sch.scheduler_drivers.FilterScheduler
And finally restart scheduler services.
- Fix compatibility with older versions
- Fix thick over subscription value
- Improve logging
- First release on PyPI.
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|Filename, size & hash SHA256 hash help||File type||Python version||Upload date|
|alt_cinder_sch-0.1.1-py2.py3-none-any.whl (12.0 kB) Copy SHA256 hash SHA256||Wheel||2.7||Jul 3, 2017|
|alt_cinder_sch-0.1.1.tar.gz (17.0 kB) Copy SHA256 hash SHA256||Source||None||Jul 3, 2017|