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Merge pull request #18684 from cdauth/volume-docs

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Add note to volume docs that data is not copied to mounted volumes
Upstream-commit: 69fbdf4294b9c062bc711b978efcde82e40a293f
Component: engine
This commit is contained in:
Sebastiaan van Stijn
2015-12-19 15:29:44 +01:00
parent 3c6477529c 0515ab43ec
commit 8acdb0b4d5
1 changed files with 2 additions and 1 deletions
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components/engine/docs/userguide/dockervolumes.md
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@@ -29,7 +29,8 @@ containers that bypasses the [*Union File System*](../reference/glossary.md#unio
- Volumes are initialized when a container is created. If the container's
base image contains data at the specified mount point, that existing data is
copied into the new volume upon volume initialization.
copied into the new volume upon volume initialization. (Note that this does
not apply when [mounting a host directory](#mount-a-host-directory-as-a-data-volume).)
- Data volumes can be shared and reused among containers.
- Changes to a data volume are made directly.
- Changes to a data volume will not be included when you update an image.