manta-mako

This repository is part of the Triton Data Center Manta project. For contribution guidelines, issues, and general documentation, visit the main Manta project page.

Mako can refer to this repository or the zone in Manta that stores Manta objects. The zone that stores objects is also known as a "storage" zone. Nginx is the server that actually puts and gets the objects to/from disk.

Active Branches

There are currently two active branches of this repository, for the two active major versions of Manta. See the mantav2 overview document for details on major Manta versions.

• master - For development of mantav2, the latest version of Manta. This is the version used by Triton.
• mantav1 - For development of mantav1, the long term support maintenance version of Manta.

Working with the nginx git submodule

mako uses Triton Data Center's fork of nginx which has been modified to support some additional features:

• Calculates the md5 checksum of the streamed body and reports it.
• Ensures that all renames are atomic in the filesystem (proper use of fsync(2)).
• Adds support for the multipart upload commit operation.

To understand how the nginx repository is managed and how we cut releases for use in mako, please read the README. When updating the nginx submodule in mako, the first step is to identify the release tag that you should use. Once that's been identified, you can update the submodule using something like the following flow:

$ git clone git@github.com:TritonDataCenter/manta-mako.git
$ cd mako/
$ git submodule init
$ git submodule update
$ cd deps/nginx/
$ git checkout <tag>
$ cd ../..
$ git add deps/nginx
$ git diff --cached #to check the submodule git SHA

Then you can commit, test, and push like any other change.

Testing

Mako tests use node-tap. Test files are all named "test/**.test.js". In general all the tests are integration tests, i.e. they require a running mako (aka "storage") instance against which to run. To run all tests on a mako instance:

ssh DC-HEADNODE-GZ      # login to the headnode
manta-login storage     # login to a storage instance
/opt/smartdc/mako/test/runtests

See the comment in runtests for various use cases for running the tests.

SAPI Tunables

MAKO_WORKER_PROCESSES      Number of nginx worker processes

MAKO_WORKER_CONNECTIONS    Maximum number of connections per nginx worker
                           process

MAKO_THREAD_POOL_SIZE      Number of threads to use for multi-part upload
                           thread pool

MAKO_PROCESS_MANIFEST      Boolean value which when set, enables the post
                           processing of a mako manifest to produce a
                           summary as well.  The summary provides
                           storage consumption details on a per-account
                           basis along with a global total.  Both the full
                           manifest and the summary are uploaded to
                           /poseidon/stor/mako and
                           /poseidon/stor/mako/summary respectively.