Merge pull request #13561 from icecrime/warn_overlay_docs

Add note about overlay not being production ready
This commit is contained in:
Sebastiaan van Stijn 2015-05-30 01:24:02 +02:00
commit 1613897d2d

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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.