Among all users, turns out just one *may* need the output to be sorted.
All the others can cope without.

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

Somewhere we do try/del/except and somewhere just pop. Using pop
everywhere saves lines of code.

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

Signed-off-by: Manuel Franceschini <livewire@google.com>
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>

Since OS objects are not stored in the configuration, we cannot put
os_hvp there, therefore the TODO is obsolete…

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

Currently, this function does three things:
- special handling of constants.VALUE_DEFAULT
- type enforcing of the resulting dict
- filling the dictionary with defaults

However, except for the first one, the second two do not belong in this
function:
- in the future, not all parameter dictionaries will be able to be
  enforced
- filling the dictionary with defaults cannot be done via a defaults
  dict in all cases, and should be done by the specialized functions
  (ideally we'd pass a partial function instance here, but we don't have
  that yet…)

As such, we remove the last items, and move them to the callers; this is
overall the same complexity, as we were calling this function in just
three places and constructing the many arguments was also complicated.

Furthermore, we move the function out of LUSetInstanceParams, as in the
future it will be used by LUSetClusterParams too.

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

Since we'll need to be able to generate the OS-specific environment
separately from the instance one, we move it to a separate function. We
also add a new OS_NAME env. var which is identical to the INSTANCE_OS
one (which won't exist for OS-only environments).

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

Currently, the existing cluster.Fill* functions take as argument an
instance. This means that in any case where we don't have an actual
instance object, we have to resort to calling the low-level
objects.FillDict function.

This is bad for two reasons:
- we have to know of, and we hardcode, the cluster object internals
  (e.g. that the nicparams are stored in a dict indexed by group)
- which can result in subtle bugs, if the underlying storage mechanisms
  change

This patch adds a lower-level implementation SimpleFillHV for FillHV and
SimpleFillBE for FillBE, and adds a completely new SimpleFillNIC (all
use cases until now hardcoded cluster.nicparams[constant.PP_DEFAULT]
directly); it then uses these new functions in cmdlib.py.

A side effect is that _CheckNicsBridgesExist loses the 'profile'
parameter, which was unused. If it's needed, we should add it later via
a proper profile parameter to SimpleFillNIC.

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

Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Balazs Lecz <leczb@google.com>

Since the introduction of OS-specific hvparams, we shouldn't ever use
objects.FillDict directly for instances, but instead go via the cluster
object. Otherwise the os_hvp will be ignored.

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

In case an OS has inconsistent declarations, we might get into a case
where one node reports a valid variants list (with OS API >=15), and
another node has OS API < 15, in which case its supported_variants gets
the default value of None. This leads to the same variable having
inconsistent data types, which leads to subtle bugs later: instead of
reporting something like "Inconsistent OS API versions", the LU exits
with a run-time exception. Furthermore, in another datapath, variants is
initialized to '[]' in case of OS diagnose failures.

The patch changes _TryOSFromDisk to initialize variants to '[]' for
OS api level below 15, and changes the variants calculation in
DiagnoseOS to be more readable.

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

It's easy to forget to add a new directory to DIRS. This check should
report such inconsistencies.

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

Older OpenSSL versions include DES-CBC3-* ciphers when specifying the
HIGH group of ciphers. Removing potentially weak ciphers from the list
of allowed ciphers ensures only strong ciphers are considered for SSL
connections.

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

This restores functionality lost in commit 387794f8. Found during
tests using QA scripts. An instance should be started after it
has been temporarily shutdown for an export.

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

This should prevent bugs in our code from accidentally overwriting
disks.

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

Tests have shown that usually we're CPU-bound for intra-cluster
imports/exports. Disabling compression will help with this.

Some versions of OpenSSL, depending on the build options, also
compress transparently. This will need further work in Ganeti.

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

This test moves an instance on the same cluster and, if successful,
moves it back. While not testing a real move between two clusters,
this is certainly better than nothing.

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

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

This “magic” value will be used to ensure that we don't accidentially
connect to the wrong daemon (e.g. due to a bug), comparable to DRBD's
per-disk secret. Just depending on the SSL certificate isn't enough
as it's always per instance and not per disk.

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

Instead of appending strings, stage parts in a list. Building the "dd"
command is moved to a separate function.

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

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

The hostname and port received from the remote cluster should
be validated, just in case.

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

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

Upon sending signals, ESRCH can be reported when the target no
longer exists.

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

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

These files are being used to test the job queue performance with
various changes and conditions. Adding them here for posterity.

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

A typo in the Raise() method of rpc.RpcResult means that any remote
errors will lack an appropriate error code; this will confuse e.g. RAPI
users.

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

Currently each time we submit a job we check the job queue size, and the
drained file. With this change we keep these pieces of information in
memory and don't read them from the filesystem each time.

Significant changes include:
  - The drained value can only be properly set by calling the
    appropriate cluster command "gnt-cluster queue drain/undrain" and
    not by removing/creating the file in the job queue directory. Not
    that anybody would have done it in this undocumented way before.
  - We get rid of the soft limit for the job queue, which we haven't
    ever used anyway.

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

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

The name clarifies the difference between this and the internal lock.
Also explain a bit better what it is.

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

Currently we sort the list of job queue files twice (once in
utils.ListVisibleFiles with sort and then later with NiceSort). We apply
the _RE_JOB_FILE regular expression twice (once in _ListJobFiles and
once in _ExtractJobID). This simplifies the code a little, and a couple
of functions performing basically the same job are collapsed.

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

This also removes the relevant pylint disable.
No point in keeping unused parameters around: if/when we need them it's
easy to add it back.

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

Rather than raising Exception use GenericError and explain a bit better
what happened.

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

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

- Increase timeouts from 10 to 30 seconds (this still breaks when the
  machine is busy, e.g. using bonnie++)
- Depend on only one timeout per test instead of three
- Reset variables before each test

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: Iustin Pop <iustin@google.com>

Generating certificates can be slow.

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

With this change unknown disk and nic parameters will be refused, rather
than silently ignored, so that one can't pass them in by mistake and not
realize what went wrong.

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

The various _Check* helper functions expect an lu to be passed in, but
the TL is passed instead. This works... sometimes! :)

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

This class is unused and untested. We must have forgot it around.

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

This call was introduced but never used. In two years.
Since it's just creating/removing a file it can also be in simpler ways,
without a special rpc call, if/when we need it again. In the meantime,
let's give it to history.

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