63 lines
1.8 KiB
Markdown
63 lines
1.8 KiB
Markdown
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% DOCKER(1) Docker User Manuals
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% Docker Community
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% Feb 2016
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# NAME
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docker-volume - Create a new volume
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# SYNOPSIS
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**docker volume** [OPTIONS] COMMAND
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[**--help**]
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# DESCRIPTION
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docker volume command manages content volumes for docker containers.
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## Data volumes
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A *data volume* is a specially-designated directory within one or more
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containers.
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Data volumes provide several useful features for persistent or shared data:
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Volumes are initialized when a container is created. If the container's
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base image contains data at the specified mount point, that existing data is
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copied into the new volume upon volume initialization. (Note that this does
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not apply when [mounting a host directory](#mount-a-host-directory-as-a-data-volume).)
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Data volumes can be shared and reused among containers.
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Changes to a data volume are made directly.
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Changes to a data volume will not be included when you update an image.
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Data volumes persist even if the container itself is deleted.
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Data volumes are designed to persist data, independent of the container's life
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cycle. Docker therefore *never* automatically deletes volumes when you remove
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a container, nor will it "garbage collect" volumes that are no longer
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referenced by a container.
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# OPTIONS
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**--help**
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Print usage statement
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# COMMANDS
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**create**
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Create a volume
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See **docker-volume-create(1)** for full documentation on the **create** command.
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**inspect**
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Return low-level information on a volume
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See **docker-volume-inspect(1)** for full documentation on the **inspect** command.
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**ls**
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List volumes
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See **docker-volume-ls(1)** for full documentation on the **ls** command.
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**rm**
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Remove a volume
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See **docker-volume-rm(1)** for full documentation on the **rm** command.
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# HISTORY
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Feb 2016, created by Dan Walsh <dwalsh@redhat.com>
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