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Add note about overlay not being production ready

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

Signed-off-by: Arnaud Porterie <arnaud.porterie@docker.com>
(cherry picked from commit 67cb748e26)
This commit is contained in:
Arnaud Porterie
2015-06-01 12:26:57 -07:00
committed by Jessica Frazelle
parent 6ca78fff63
commit 4872f86d00
1 changed files with 6 additions and 0 deletions
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docs/sources/reference/commandline/cli.md
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@@ -289,6 +289,12 @@ Call `docker -d -s overlay` to use it.
> inode consumption (especially as the number of images grows), as well as
> being incompatible with the use of RPMs.
> **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.