Gorka Eguileor 6f63347eef Fix MySQL DB error in Delete CG
When running a delete CG operation on a MySQL DB engine we'll get an
error from the DB: "You can't specify target table 'consistencygroups'
for update in FROM clause".

This is caused by a non standard behavior only in MySQL, as SQLite and
PostgreSQL work as expected, on filter `cg_creating_from_src` that
checks that we are not using the CG we are trying to delete to create
another CG at this very moment, CGs that were previously created from
this CG are not considered.

This patch changes the way we perform the filter using a select subquery
as a workaround for MySQL unexpected behavior and updates devref to warn
about this unexpected MySQL behavior.

Change-Id: Ic10de411ffeceb00f1e8525906995bd8b2f49777
Closes-Bug: #1588487
2016-06-06 14:27:37 +02:00
..
2016-06-06 14:27:37 +02:00
2012-05-03 10:48:26 -07:00
2012-05-03 10:48:26 -07:00

Building the docs

Dependencies

Sphinx

You'll need sphinx (the python one) and if you are using the virtualenv you'll need to install it in the virtualenv specifically so that it can load the cinder modules.

pip install Sphinx
Graphviz

Some of the diagrams are generated using the dot language from Graphviz.

sudo apt-get install graphviz

Use make

Just type make:

% make

Look in the Makefile for more targets.

Manually

  1. Generate the code.rst file so that Sphinx will pull in our docstrings:

    % ./generate_autodoc_index.sh > source/code.rst
  2. Run `sphinx_build`:

    % sphinx-build -b html source build/html

Use tox

The easiest way to build the docs and avoid dealing with all dependencies is to let tox prepare a virtualenv and run the build_sphinx target inside the virtualenv:

% cd ..
% tox -e docs

The docs have been built

Check out the build directory to find them. Yay!