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Merge pull request #10104 from thaJeztah/docs-add-note-to-cli-export

Docs: Add note that export doesn't include volume data.

Sven Dowideit authored on 2015/01/16 08:15:46
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@@ -999,6 +999,15 @@ For example:
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     $ sudo docker export red_panda > latest.tar
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+> **Note:**
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+> `docker export` does not export the contents of volumes associated with the
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+> container. If a volume is mounted on top of an existing directory in the 
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+> container, `docker export` will export the contents of the *underlying* 
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+> directory, not the contents of the volume.
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+>
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+> Refer to [Backup, restore, or migrate data volumes](/userguide/dockervolumes/#backup-restore-or-migrate-data-volumes)
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+> in the user guide for examples on exporting data in a volume.
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+
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 ## history
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     Usage: docker history [OPTIONS] IMAGE