Add the disk-barriers and meta-barriers parameters described in the
design doc.

constants.py:
* add the needed LD and DT-level parameters, use the defaults provided
  at ./configure time;
* add constants representing which barriers should be disabled and the
  set of valid options.

lib/bdev.py:
* factor the barriers handling code to a class method, for testing
  purposes;
* implement the more granular version checking logic;
* use the LD level parameters;
* add stricter check on DRBD version (8.0, 8.2 or 8.3), as we do not
  support 8.4 yet.

lib/cmdlib.py:
* translate DT level parameters to LD level ones.

configure.ac, Makefile.am:
* set both disk and meta barriers parameters depending on the value of
  --enable-drbd-barriers.

test/ganeti.bdev_unittest.py:
* unit tests for the code that sets DRBD barrier parameters depending on
  the version.

doc/design-resource-model.rst:
* reword the description of meta-barriers;
* change all disk parameters names to use dashes instead of underscores.

Signed-off-by: Andrea Spadaccini <spadaccio@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

While the 2.1 design is old and should be “immutable”, I can't find
documentation about the confd protocol anywhere else, so let's correct
the design doc.

The patch is mostly style changes, plus a clarification on the ‘query’
field of the request, which varies *a lot* per request type.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

configure.ac:
* change the documentation of --with-lvm-stripecount parameter to
  reflect the change

doc/design-resource-model.rst:
* change drbd/stripes to drbd/data-stripes and drbd/metastripes to
  drbd/meta-stripes

rest of files:
* add the plain/stripes, drbd/data-stripes and drbd/meta-stripes disk
  parameters

Signed-off-by: Andrea Spadaccini <spadaccio@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Simplify design by moving all the parameters to disk template level,
explaining why this is sub-optimal. Add notes about DRBD versions,
corner cases and parameters application time.

Signed-off-by: Andrea Spadaccini <spadaccio@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: Agata Murawska <agatamurawska@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Signed-off-by: Agata Murawska <agatamurawska@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

- Commit b7a1c816 changed the LU to generate jobs
- Mention documented results in NEWS

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

This just makes sure that the paragraph doesn't contains lines that
start with :, which make Sphinx (1.0.7) complain.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Andrea Spadaccini <spadaccio@google.com>

Add the master netmask and master IP version parameters to the hooks and
document them. In this way, the hook environment building function can
be reused for the planned master IP turnup changes.

Signed-off-by: Andrea Spadaccini <spadaccio@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Move the contents of the PATH environment variable for hooks to
constants, and use its value in the code and in the hooks documentation.

Signed-off-by: Andrea Spadaccini <spadaccio@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

Reviewed-by: Michael Hanselmann <hansmi@google.com>
Signed-off-by: Andrea Spadaccini <spadaccio@google.com>

Signed-off-by: Andrea Spadaccini <spadaccio@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Starting with Ganeti 2.5 the console uses a query and no longer acquires
locks. See commit d6f46b6a.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Commit d1c172de inadvertently changes the
“/2/instances/[instance_name]/replace-disks” resource to use body
parameters. There were no QA tests and the issue wasn't noticed.

This patch re-introduces support for query parameters and adds a QA
test.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Andrea Spadaccini <spadaccio@google.com>

I am currently able to run a 2-node virtual cluster on my machine,
with a very ad-hoc setup. But the results show clearly that this is
doable, and that given the right tools, setting up such a cluster will
be quite easy.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This improves devnotes.rst with some tricks for Haskell development,
and additionally it does two Makefile improvements:

- properly document lib/_vcsversion.py as a requirement for
  Constants.hs (but do not require rebuild when updated)
- move HEXTRA at the end of the GHC invocation, so any command line
  options will indeed override the built-in ones (especially -osuf)

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

*mumble*

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

A separate patch will add “auto-promote” through
“/2/nodes/[node_name]/role”.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

This is not complete, but is as close as I can get it for now. I
expect people actually implementing the various changes to extend the
design doc.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Signed-off-by: Agata Murawska <agatamurawska@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: Agata Murawska <agatamurawska@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

I wanted to just enable another extension (the graphviz one), but then
I went and did a lot of changes:

- replaced ' with " for consistency with our style guide
- imported new settings (commented out) that current python-sphinx
  (1.0.7) generates when starting a new project; for the keys that are
  different in 0.6 and 1.0+, I left the 0.6 version until we bump our
  documented version
- enabled graphviz; needed for a design doc I'm currently working on
- updated copyright years
- changed list style from single-line to multi-line
- added coverage/ dir to exclude_trees

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

I started with just adding some :term:`SoW` and similar to design-oob,
but then I realised this was 80-chars wrapped, not 72-chars. So I went
and re-wrapped most of it, plus adding the glossary references.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

These will be used to remove some inline definitions and replace them
with :term:`foo`.

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: Agata Murawska <agatamurawska@google.com>
Signed-off-by: René Nussbaumer <rn@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

This was still missing from RAPI.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Signed-off-by: René Nussbaumer <rn@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Fix a failing pyassert in the RAPI docs and update it to reflect the
addition of SPICE to gnt-instance console.

Signed-off-by: Andrea Spadaccini <spadaccio@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Like “/”, it'll just return a JSON null.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

These were never really useful. Neither gave a complete list of
available resources—the documentation in doc/rapi.rst is much better at
that.

Since some monitoring code might use the “/” resource it's kept around
but will only return a JSON “null”.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

Signed-off-by: Agata Murawska <agatamurawska@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

Signed-off-by: Tsachy Shacham <tsachy@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

This utility checks whether the code conforms to PEP8. Some checks had
to be disabled for Ganeti.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Some opcodes aren't documented yet.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

- In README, refer to “install.rst”, not “install.html”
- In rapi.rst, wrap line longer than 72 characters
- In rlib2.py, update and clarify description of POST vs. PUT

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Also replace console types with constants.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

This was requested in issue 181.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>