43 lines
1.9 KiB
Markdown
43 lines
1.9 KiB
Markdown
# Experimental: Docker volume plugins
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Docker volume plugins enable Docker deployments to be integrated with external
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storage systems, such as Amazon EBS, and enable data volumes to persist beyond
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the lifetime of a single Docker host. See the [plugin documentation](/experimental/plugins)
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for more information.
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This is an experimental feature. For information on installing and using experimental features, see [the experimental feature overview](experimental.md).
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# Command-line changes
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This experimental features introduces two changes to the `docker run` command:
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- The `--volume-driver` flag is introduced.
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- The `-v` syntax is changed to accept a volume name a first component.
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Example:
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$ docker run -ti -v volumename:/data --volume-driver=flocker busybox sh
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By specifying a volume name in conjunction with a volume driver, volume plugins
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such as [Flocker](https://clusterhq.com/docker-plugin/), once installed, can be
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used to manage volumes external to a single host, such as those on EBS. In this
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example, "volumename" is passed through to the volume plugin as a user-given
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name for the volume which allows the plugin to associate it with an external
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volume beyond the lifetime of a single container or container host. This can be
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used, for example, to move a stateful container from one server to another.
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The `volumename` must not begin with a `/`.
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# API changes
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The container creation endpoint (`/containers/create`) accepts a `VolumeDriver`
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field of type `string` allowing to specify the name of the driver. It's default
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value of `"local"` (the default driver for local volumes).
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# Related GitHub PRs and issues
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- [#13161](https://github.com/docker/docker/pull/13161) Volume refactor and external volume plugins
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Send us feedback and comments on [#13420](https://github.com/docker/docker/issues/13420),
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or on the usual Google Groups (docker-user, docker-dev) and IRC channels.
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