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@@ -156,7 +156,7 @@ string is equivalent to setting the `--tlsverify` flag. The following are equiva
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### Daemon storage-driver option
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The Docker daemon has support for three different image layer storage drivers: `aufs`,
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-`devicemapper`, and `btrfs`.
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+`devicemapper`, `btrfs` and `overlayfs`.
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The `aufs` driver is the oldest, but is based on a Linux kernel patch-set that
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is unlikely to be merged into the main kernel. These are also known to cause some
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@@ -175,6 +175,9 @@ To tell the Docker daemon to use `devicemapper`, use
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The `btrfs` driver is very fast for `docker build` - but like `devicemapper` does not
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share executable memory between devices. Use `docker -d -s btrfs -g /mnt/btrfs_partition`.
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+The `overlayfs` is a very fast union filesystem. It is now merged in the main
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+Linux kernel as of [3.18.0](https://lkml.org/lkml/2014/10/26/137).
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+Call `docker -d -s overlayfs` to use it.
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### Docker exec-driver option
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Vincent Batts