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3.0 KiB
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134 lines
3.0 KiB
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..
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This work is licensed under a Creative Commons Attribution 3.0 Unported
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License.
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http://creativecommons.org/licenses/by/3.0/legalcode
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===================================================================
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Libvirt: Support for attaching volumes located on Virtuozzo Storage
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===================================================================
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https://blueprints.launchpad.net/nova/+spec/libvirt-vzstorage-volume-support
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Currently, there are Libvirt volume drivers that support network-attached
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file systems such as Gluster, NFS or SMB. The purpose of this blueprint is
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to add ability to attach volumes hosted by Virtuozzo Storage.
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Problem description
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===================
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Virtuozzo Storage is a fault-tolerant distributed storage system, optimized
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for virtualization workloads. From client's point of view it looks like network
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attached storage (NFS or GlusterFS).
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Virtuozzo Storage allows to use disk space of conventional linux systems to
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provide fault-tolerant storage with automatic recovery. It's optimized for
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performance of virtualization workloads and has strong data consistency.
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Use Cases
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----------
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Deployer will be able to attach block storage exported in the form of virtual
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disks on Virtuozzo Storage to instances.
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Proposed change
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===============
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A new volume driver will be added in order to support attaching volumes
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located on Virtuozzo Storage. The volume driver will have a similar workflow
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as NFS and SMBFS volume drivers have.
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The CI system will be running on Nova tree and checking each Nova patch with
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Virtozzo Storage. The CI aims to eventually vote on every relevant Nova
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patchset
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Alternatives
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------------
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None
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Data model impact
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-----------------
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None
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REST API impact
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---------------
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None
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Security impact
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---------------
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The share credentials will be parsed in the volume connection info and used
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when mounting a Virtuozzo Storage cluster.
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Notifications impact
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--------------------
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None
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Other end user impact
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---------------------
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None
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Performance Impact
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------------------
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None
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Other deployer impact
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---------------------
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The deployer will be able to configure the path where the Virtuoozo Storage
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clusters will be mounted, as well as setting mount flags.
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Developer impact
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----------------
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None
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Implementation
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==============
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Assignee(s)
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-----------
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Primary assignee:
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<dguryanov@virtuozzo.com>
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Work Items
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----------
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Add support for mounting Virtuozzo Storage clusters.
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Dependencies
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============
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None
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Testing
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=======
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This feature should be tested using the Virtuozzo Storage Cinder Volume
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driver. The existing Tempest tests along with the according unit tests
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should be enough for the moment in order to test this.
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While a CI is being considered, for the moment Tempest tests will be run
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periodically for this scenario.
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Documentation Impact
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====================
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Using the Virtuozzo Storage backend will be documented.
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References
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==========
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Cinder Virtuozzo Storage Driver blueprint:
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https://blueprints.launchpad.net/cinder/+spec/virtuozzo-cloud-storage-support
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