Modify existing tests to use the name option for instance disks. The
configuration options 'disk' and 'disk-growth' are merged into a single
'disks' option, which is a list of dictionaries with 'size', 'growth' and
'name' items.

Also, add 'instance-device-names' QA test, which tests addition, renaming
and removal of named devices.

Signed-off-by: Christos Stavrakakis <cstavr@grnet.gr>
Reviewed-by: Helga Velroyen <helgav@google.com>

qa_config.IsTemplateSupported() is already used to decide which disk
templates are supported by QA. Enabled templates now are part of that
decision.

Unit tests are updated.

Signed-off-by: Bernardo Dal Seno <bdalseno@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

Fixes the QA of 'gnt-cluster init' and 'gnt-cluster modify' with respect
to enabling disk templates.

Signed-off-by: Helga Velroyen <helgav@google.com>
Reviewed-by: Michele Tartara <mtarara@google.com>

This extends the QA scripts to test the changes in 'gnt-cluster init',
'gnt-cluster info', and 'gnt-cluster modify' with respect to enabled
storage types.

Signed-off-by: Helga Velroyen <helgav@google.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

Until now all tests depended on simple AND/OR conditions. With the
introduction of virtual cluster support, some tests can only run if
virtual clusters are not in use (e.g. not yet supported or not
possible). Instead of introducing more logic for enabling/disabling
tests, callable values are supported instead. “ht.WithDesc” should be
used on them to continue to provide a readable description.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

If these new options are set, a virtual cluster is created and used.
Virtual clusters consist of 1..N virtual nodes on a single physical (or
virtual) node. The design of virtual clusters is described in
“doc/design-virtual-clusters.rst”.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Use a sort key function instead of using a comparing function (“cmp=…”).
The latter is not supported in Python 3 and using a sort key function is
easier.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Having a readable representation makes debugging easier.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Also make “used” a property.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Use a method on the instance object instead of going through
“qa_config.GetInstanceTemplate”. This provides for better encapsulation.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Call the wrapped instance method directly.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

These are no longer used.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Instead of having a module-level function in “qa_config” to release a
node, a new method on node objects is used.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Up until now nodes were stored as a dictionary. The keys were hardcoded
in a lot of places and entries modified directly.

This patch introduces a new class for nodes in QA named “_QaNode”. It
still supports accessing details via dictionary syntax, but that will be
removed after a couple of patches changing all users. Unit tests for
“qa_config.AcquireNode” are also included.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Instead of having a module-level function in “qa_config” to release an
instance, a new method on instance objects is used.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

Up until now instances were stored as a dictionary. The keys were
hardcoded in a lot of places and entries modified directly.

This patch introduces a new class for instances in QA named
“_QaInstance”. It still supports accessing details via dictionary
syntax, but that will be removed after a couple of patches changing all
users. Unit tests for “qa_config.AcquireInstance” are also included.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

The same code can be written in a single expression. The earlier patch
named “Refactor storage of runtime exclusive storage flag in QA”
provided the unit test.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Helga Velroyen <helgav@google.com>

This is a follow-up for “qa_config: Remove exclusive storage flag from
config”. Instead of storing the flag in a module-level variable it is
now stored within the new QA configuration class and unit tests are
provided. Wrappers in “qa_config” maintain the existing interface.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Helga Velroyen <helgav@google.com>

Ever since its introduction (sometime before commit cec9845c in September
2007), the QA configuration was stored in a dictionary at module-level
in “qa/qa_config.py”. The configuration was loaded, verified and
evaluated using module-level functions. Since then the configuration has
become more complicated and more functionality has been added. This
patch refactors handling the configuration to use a class and provides
unittests.

- The configuration is loaded through a class method which also verifies
  it for consistency
- Wrapper methods are provided in “qa_config” to not change the
  interface
- Unit tests are provided for the new configuration class
- The configuration object is still stored in a module-level variable
  and can be retrieved using “GetConfig” (direct access should be
  avoided so an uninitialized configuration can be detected)

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Helga Velroyen <helgav@google.com>

Commit 6a0f22e1 added the ability to track the status of the cluster-wide
flag for exclusive storage. It did so in a way which modifies the
in-memory configuration dictionary. This patch changes the code to use a
plain global variable as a temporary solution until a configuration
object is added.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Helga Velroyen <helgav@google.com>

It is only used in one place and not necessary.

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

The code launching instance tests for "plain" and "drbd" templates has been
unified. In this way it's easier to add more templates, and to re-use the same
tests with different configurations.

Signed-off-by: Bernardo Dal Seno <bdalseno@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

These make possible to simplify the logic of tests requiring more
nodes. Used in the following patches.

Signed-off-by: Bernardo Dal Seno <bdalseno@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

QA configuration now tracks the state of the exclusive_storage flag at
cluster level. This will be used to selectively enable tests according to
the configuration.

Also, it's now possible to specify the initial value of the
exclusive_storage flag in the configuration file.

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

The global 'cfg' variable is initialized to an empty dictionary, so there
is no more need to disable some pylint checks.

Signed-off-by: Bernardo Dal Seno <bdalseno@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

The disk templates used by the instances are tracked in the QA
configuration.  This will be used to selectively enable tests according to
the configuration.

Signed-off-by: Bernardo Dal Seno <bdalseno@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

To help developing Ganeti on newer distributions, let's try to fix
pylint warnings/errors. I'm using pylint from current Debian wheezy:
pylint 0.25.1, astng 0.23.1, common 0.58.0, and we have 3 things that
needs fixing.

First, a really wide "except", with the silencing in the wrong
place. I'm not sure why this doesn't have "except Exception", so let's
add it. However, pylint still complains about "Catching too general
exception", even though we do want to catch both system and our
exception, so let's add a silence for W0703. It's true that we
shouldn't catch KeyboardInterrupt and friends, but that should be
cleaned up on the master branch.

Second, pylint complains about "redefining name builtin tuple",
because we do some pattern matching in the except blocks in
netutils. This seems to be a false positive, but let's clean the code
around this.

And finally, type inference again goes bad, so let's silence E1103
with its "boolean doesn't have 'get' method".

After this, I can run "make lint", and by extension "make
commit-check" on Debian Wheezy, yay! We might be able to bump our
required pylint versions to something not ancient…

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

Some parts of QA should only be run with certain hypervisors (e.g.
testing instance HV parameters). To make that happen we always define
the cluster's hypervisors and provide a function to get the default
hypervisor.

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

In some QA environments static MAC addresses must be used.

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

Commit 1010ec70 enabled all tests by default. In some scenarios where
the configuration is static one may not want newly added tests to be
run.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>
(cherry picked from commit 59a8fe48)

This script can be used to check if an instance is running or stopped at
various points during a QA run. Environment variables are used to pass
the most essential information.

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

Until now “TestRunIf” and “TestEnabled” could only handle AND. With this
patch a new class named “Either” is added to “qa_config” and allows OR.
The name “Either” was chosen instead of “Or” as the latter is very close
to the reserved keyword “or”.

Examples:
  ["rapi", Either(["instance-rename", "instance-reboot"])]

  Either(["node-list", "instance-list", "job-list"])

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

Commit 1010ec70 enabled all tests by default. In some scenarios where
the configuration is static one may not want newly added tests to be
run.

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

In version 0.21, pylint unified all the disable-* (and enable-*)
directives to disable (resp. enable). This leads to a lot of
DeprecationWarning being emitted even if one uses the recommended
version of pylint (0.21.1, as stated in devnotes.rst).

This commit changes all the disable-msg directives to disable.

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

s/'/"/ in (hopefully) the right places.

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

Right now, the QA code is not covered by pylint, and this shows at
least one low-impact bug.

This patch does the necessary changes to make QA pylint-clean, and the
changes the makefile to run pylint for it.

Notable changes:

- qa_utils.GenericQueryTest: randfields was not used at all, and my
  belief is that it was indented to be used in order not to modify the
  input list; so I replaced randfields with fields, so we only shuffle
  the our local copy
- qa_node.TestOutOfBand was using it's own copy of AcquireNode(), so I
  replaced it with the existing version
- qa_os: was using 'dir' in a couple of places, replaced with dirname

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

This is more of an RFC. The patch attempts to address two issues:

- running conditional tests is ugly right now
- we don't know what tests we skipped

By using the new RunTestIf, we solve both. But a significant number of
test decisions are more complex than just “is test enabled”, so those
remain to be run via RunTest, which means we don't get logging of when
they're not run. Hence the logging is not complete… Sugesstions on how
to solve it are welcome.

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

This patch enables all tests by default, unless when they're
explicitely disabled in the config file. This will make sure
newly added tests are run even when an old configuration file
is used.

A comment is also added qa-sample.json.

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

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