From 7eaf1c39ac31698bb2622a3740374aff7b37d9fa Mon Sep 17 00:00:00 2001 From: Sebastiaan van Stijn Date: Tue, 9 Oct 2018 18:51:13 +0200 Subject: [PATCH] Deprecate "devicemapper" storage driver. The `devicemapper` storage driver is deprecated in favor of `overlay2`, and will be removed in a future release. Users of the `devicemapper` storage driver are recommended to migrate to a different storage driver, such as `overlay2`, which is now the default storage driver. The `devicemapper` storage driver facilitates running Docker on older (3.x) kernels that have no support for other storage drivers (such as overlay2, or AUFS). Now that support for `overlay2` is added to all supported distros (as they are either on kernel 4.x, or have support for multiple lowerdirs backported), there is no reason to continue maintenance of the `devicemapper` storage driver. Signed-off-by: Sebastiaan van Stijn --- docs/deprecated.md | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/docs/deprecated.md b/docs/deprecated.md index 200669391d14..63b5bfcef43e 100644 --- a/docs/deprecated.md +++ b/docs/deprecated.md @@ -19,6 +19,22 @@ The following list of features are deprecated in Engine. To learn more about Docker Engine's deprecation policy, see [Feature Deprecation Policy](https://docs.docker.com/engine/#feature-deprecation-policy). +### device mapper storage driver + +**Deprecated in Release: v18.09.0** + +The `devicemapper` storage driver is deprecated in favor of `overlay2`, and will +be removed in a future release. Users of the `devicemapper` storage driver are +recommended to migrate to a different storage driver, such as `overlay2`, which +is now the default storage driver. + +The `devicemapper` storage driver facilitates running Docker on older (3.x) kernels +that have no support for other storage drivers (such as overlay2, or AUFS). + +Now that support for `overlay2` is added to all supported distros (as they are +either on kernel 4.x, or have support for multiple lowerdirs backported), there +is no reason to continue maintenance of the `devicemapper` storage driver. + ### Reserved namespaces in engine labels **Deprecated in Release: v18.06.0**