Merge pull request #1424 from thaJeztah/deprecate_devicemapper

Deprecate "devicemapper" storage driver.
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Sebastiaan van Stijn 2018-10-17 18:15:15 +02:00 committed by GitHub
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@ -34,6 +34,21 @@ on pre 4.x kernels. Now that all supported distributions are able to run `overla
(as they are either on kernel 4.x, or have support for multiple lowerdirs (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. backported), there is no reason to keep maintaining the `overlay` storage driver.
### 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 ### Reserved namespaces in engine labels