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The purpose of this spec is to add support for volumes, hosted by Virtuozzo storage. Virtuozzo Storage is a fault-tolerant distributed storage system, optimized for virtualization workloads. From client's point of view it looks like network attached storage (NFS or GlusterFS). The CI system will be running on Nova tree and checking each Nova patch with Virtozzo Storage. The CI aims to eventually vote on every relevant Nova patchset. blueprint libvirt-vzstorage-volume-support Change-Id: I97f68a2d8e261d2c7db98e6916bc52a8068fe5fe
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134 lines
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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 similiar 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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