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Add note about overlay not being production ready 

Add a paragraph in cli.md mentioning that overlay is not a production
ready graphdriver.

Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
master
Arnaud Porterie 2015-05-28 13:24:28 -07:00 committed by Tibor Vass
parent ba522b3391
commit c23cfcf30d
1 changed files with 6 additions and 0 deletions
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6
docs/sources/reference/commandline/cli.md
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@ -293,6 +293,12 @@ The `overlay` is a very fast union filesystem. It is now merged in the main
Linux kernel as of [3.18.0](https://lkml.org/lkml/2014/10/26/137). Call
`docker -d -s overlay` to use it.
> **Note:**
> As promising as `overlay` is, the feature is still quite young and should not
> be used in production. Most notably, using `overlay` can cause excessive
> inode consumption (especially as the number of images grows), as well as
> being incompatible with the use of RPMs.
> **Note:**
> It is currently unsupported on `btrfs` or any Copy on Write filesystem
> and should only be used over `ext4` partitions.