Merge pull request #4304 from thaJeztah/daemon_remove_deprecated_drivers

docs: remove uses of deprecated AuFS, legacy overlay  storage drivers

Author: thaJeztah

docs/deprecated.md

@@ -525,12 +525,12 @@ option was no longer used.
 **Deprecated in Release: v19.03**
 **Removed in Release: v24.0**
 
-The `aufs` storage driver is deprecated in favor of `overlay2`, and will
-be removed in a future release. Users of the `aufs` storage driver are
-recommended to migrate to a different storage driver, such as `overlay2`, which
-is now the default storage driver.
+The `aufs` storage driver is deprecated in favor of `overlay2`, and has been
+removed in a Docker Engine v24.0. Users of the `aufs` storage driver must
+migrate to a different storage driver, such as `overlay2`, before upgrading
+to Docker Engine v24.0.
 
-The `aufs` storage driver facilitates running Docker on distros that have no
+The `aufs` storage driver facilitated running Docker on distros that have no
 support for OverlayFS, such as Ubuntu 14.04 LTS, which originally shipped with
 a 3.14 kernel.
 
@@ -539,58 +539,22 @@ is available 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 `aufs` storage driver.
 
-#### Disabled by default in v23.0
-
-Docker already prevented deprecated storage drivers from being automatically
-selected on new installations, but continued to use these drivers when upgrading
-existing installations. Starting with the v23.0 release, the Docker Engine will
-fail to start if a deprecated storage driver is used (see [moby#43378](https://github.com/moby/moby/pull/43378):
-
-```console
-failed to start daemon: error initializing graphdriver: prior storage driver
-aufs is deprecated and will be removed in a future release; update the the daemon
-configuration and explicitly choose this storage driver to continue using it;
-visit https://docs.docker.com/go/storage-driver/ for more information.
-```
-
-To continue using the storage driver, update the daemon configuration to use
-explicitly use the given storage driver. Users are encouraged to migrate to 
-different storage driver.
-
 ### Legacy overlay storage driver
 
 **Deprecated in Release: v18.09**
 **Removed in Release: v24.0**
 
 The `overlay` storage driver is deprecated in favor of the `overlay2` storage
 driver, which has all the benefits of `overlay`, without its limitations (excessive
-inode consumption). The legacy `overlay` storage driver will be removed in a future
-release. Users of the `overlay` storage driver should migrate to the `overlay2`
-storage driver.
+inode consumption). The legacy `overlay` storage driver has been removed in 
+Docker Engine v24.0. Users of the `overlay` storage driver should migrate to the
+`overlay2` storage driver before upgrading to Docker Engine v24.0.
 
 The legacy `overlay` storage driver allowed using overlayFS-backed filesystems
 on pre 4.x kernels. Now that all supported distributions are able to run `overlay2`
 (as they are either on kernel 4.x, or have support for multiple lowerdirs
 backported), there is no reason to keep maintaining the `overlay` storage driver.
 
-#### Disabled by default in v23.0
-
-Docker already prevented deprecated storage drivers from being automatically
-selected on new installations, but continued to use these drivers when upgrading
-existing installations. Starting with the v23.0 release, the Docker Engine will
-fail to start if a deprecated storage driver is used (see [moby#43378](https://github.com/moby/moby/pull/43378):
-
-```console
-failed to start daemon: error initializing graphdriver: prior storage driver
-overlay is deprecated and will be removed in a future release; update the the daemon
-configuration and explicitly choose this storage driver to continue using it;
-visit https://docs.docker.com/go/storage-driver/ for more information.
-```
-
-To continue using the storage driver, update the daemon configuration to use
-explicitly use the given storage driver. Users are encouraged to migrate to
-different storage driver.
-
 ### Device mapper storage driver
 
 **Deprecated in Release: v18.09**
@@ -602,7 +566,7 @@ 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).
+that have no support for other storage drivers (such as overlay2, or btrfs).
 
 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

docs/extend/plugins_graphdriver.md

@@ -25,7 +25,7 @@ advisory: experimental
 
 Docker graph driver plugins enable admins to use an external/out-of-process
 graph driver for use with Docker engine. This is an alternative to using the
-built-in storage drivers, such as aufs/overlay/devicemapper/btrfs.
+built-in storage drivers, such as overlay2.
 
 You need to install and enable the plugin and then restart the Docker daemon
 before using the plugin. See the following example for the correct ordering

docs/reference/commandline/dockerd.md

@@ -323,7 +323,7 @@ $ docker -H tcp://127.0.0.1:2375 pull ubuntu
 ### Daemon storage-driver
 
 On Linux, the Docker daemon has support for several different image layer storage
-drivers: `aufs`, `devicemapper`, `btrfs`, `zfs`, `overlay`, `overlay2`, and `fuse-overlayfs`.
+drivers: `overlay2`, `fuse-overlayfs`, `btrfs`, `zfs`, and `devicemapper`.
 
 `overlay2` is the preferred storage driver for all currently supported Linux distributions,
 and is selected by default. Unless users have a strong reason to prefer another storage driver,