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Brian Goff 20bcf49fb6 Add option to auto-configure blkdev for devmapper
Instead of forcing users to manually configure a block device to use
with devmapper, this gives the user the option to let the devmapper
driver configure a device for them.

Adds several new options to the devmapper storage-opts:

- dm.directlvm_device="" - path to the block device to configure for
  direct-lvm
- dm.thinp_percent=95 - sets the percentage of space to use for
  storage from the passed in block device
- dm.thinp_metapercent=1 - sets the percentage of space to for metadata
  storage from the passed in block device
- dm.thinp_autoextend_threshold=80 - sets the threshold for when `lvm`
  should automatically extend the thin pool as a percentage of the total
  storage space
- dm.thinp_autoextend_percent=20 - sets the percentage to increase the
  thin pool by when an autoextend is triggered.

Defaults are taken from
[here](https://docs.docker.com/engine/userguide/storagedriver/device-mapper-driver/#/configure-direct-lvm-mode-for-production)

The only option that is required is `dm.directlvm_device` for docker to
set everything up.

Changes to these settings are not currently supported and will error
out.
Future work could support allowing changes to these values.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2017-06-02 00:11:04 +00:00
contrib/completion Add bash completion for `stack ls --format` 2017-06-02 00:11:04 +00:00
docs Add option to auto-configure blkdev for devmapper 2017-06-02 00:11:04 +00:00
experimental Fix list of experimental features 2017-06-02 00:11:04 +00:00
man Add option to auto-configure blkdev for devmapper 2017-06-02 00:11:04 +00:00

docs/README.md

The non-reference docs have been moved!

The documentation for Docker Engine has been merged into the general documentation repo.

See the README for instructions on contributing to and building the documentation.

If you'd like to edit the current published version of the Engine docs, do it in the master branch here: https://github.com/docker/docker.github.io/tree/master/engine

If you need to document the functionality of an upcoming Engine release, use the vnext-engine branch: https://github.com/docker/docker.github.io/tree/vnext-engine/engine

The reference docs have been left in docker/docker (this repo), which remains the place to edit them.

The docs in the general repo are open-source and we appreciate your feedback and pull requests!