If stopping an instance failed, the configuration would already be gone
and other operations depending on it (e.g. migration) would no longer
work. With this patch the configuration file is only removed once the
instance was succesfully stopped or destroyed.

Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Michele Tartara <mtartara@google.com>

Instead of calling _WriteConfigFileStatic from both derived classes,
those now only return the content (minus the “do not edit” header). The
configuration is then written by the base class, XenHypervisor.

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

Unit tests will have to specify a custom Xen configuration directory (a
temporary directory). To this end “hv_xen.XenHypervisor” and its two
derived classes are modified to have fewer static and class methods. A
new private attribute for the configuration directory is also added (to
be used in test code).

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

The “_GetConfigFileDiskData” function is moved to module level and
cleaned up (module-level constants for letters and file I/O drivers).

Until now only 24 disks would be supported (e.g. “sda” to “sdx”), when
the Latin alphabet actually has 26 characters. Now all 26 letters would
be available for use (“constants.MAX_DISKS” is still 16).

Newly added unit tests provide complete coverage for
“_GetConfigFileDiskData”.

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

Refactor and add tests for getting node (Domain-0) information.

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

This patch refactors “_RunXmList” and adds some tests.

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

Change all “Verify” methods in hypervisor abstractions to explicitely
return None if no problem was detected. Remove punctuation from error
messages. Update docstrings with “@return” and some small mistakes.

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

In _ReadConfigFile, the filename should be prepared outside the
try/except block. Fixes bad code formatting, too.

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

Add a unittest for a function formatting CPU pinning information for
Xen's configuration.

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

Stop hardcoding the path in “hv_xen.py”.

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

...and use it for a few parameters for which it makes sense.

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

This was fixed in stable-2.6, commit 053c356a

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

This was fixed in stable-2.6, commit 053c356a

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

Signed-off-by: Dimitris Aragiorgis <dimara@grnet.gr>
Reviewed-by: Iustin Pop <iustin@google.com>

- Rename xm-console-wrapper to xen-console-wrapper
- Pass the xen command to use as a parameter

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

Until now the only way to make live migration work in conjunction with
"xl" was to add ssh known_hosts keys for every node's secondary ip on
every other node.

With this command we remove the target key verification: this is not
worse than what we were doing before with "xm", and allows the migration
to happen under either toolstack, without extra manual work. Of course
the full security of ssh is not used by live migration, then.

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

If the toolstack is set to "xl" we shouldn't ping xend for liveness
before attempting a live migration.

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

This patch adds support for Xen's CPU scheduler 'cpu_cap' and
'cpu_weight' parameters.

Ganeti default values (cap: 0=unlimited, weight: 256) are Xen defaults.

cpu_cap is not validated correctly because of actual Ganeti limitation
on checks. I'd need check methods to get beparams or vcpus to get moved
to hvparams.

Signed-off-by: Sébastien Bocahu <sebastien.bocahu@nuxit.com>
Reviewed-by: Guido Trotter <ultrotter@google.com>

Some parts of the code still use a hardcoded user name: root. This patch
replaces all with a constant specified at build time. The end goal is to
make it possible to run a Ganeti cluster without any special privileges
(of course this will prevent some functionality from working).

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

- pathutils: Prepend node-specific prefix path
- RPC: Use virtual paths (see vcluster.py)
- SSH: Pass environment variables, use destination's node directory when
  copying files using scp, use GANETI_HOSTNAME to determine hostname

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

File system paths moved from constants to pathutils.

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

Problem introduced by commit 87f0aa48.

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

Remove a useless space at the end of the line in a config file.

Signed-off-by: Jack Sitnikov <sitnikove@gmail.com>
Signed-off-by: Bernardo Dal Seno <bdalseno@google.com>
Reviewed-by: Bernardo Dal Seno <bdalseno@google.com>

This hv parameter allows passing PCI devices to virtual machines.

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

xm and xl are mostly compatible, there is just a change in migrate,
which for now we simple bridge by comparing the command string.

Also XEN_CMD is now set during configure time. This will then be fixed
in Ganeti 2.7 when we make it an hvparams.

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

Should be straightforward; the only difference from before is that we
will remove the 'auto' file even during migration finalise.

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

If we have available more than MINMEM but less than MAXMEM, start a new
instance with that value, rather than MAXMEM.

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

This is set to the same amount as the memory for now, but will allow
starting instances with less memory than their maximum.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: René Nussbaumer <rn@google.com>

- Report memory used by hypervisor (“mem_hv” as per resource model
  design document, “xmem” in htools)
- Also report number of CPUs available to Dom0
- Some other, small changes

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

This will be stored in the node object and used for calculations.

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

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

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

These lists will be used to declare some of the files not necessarily
needed on all nodes. The files selected are files without which the
various hypervisors can still work, but that when they are present
should be synchronized across the cluster (or node group).

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

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

- Copy the xl config file, in case there's any
- Start instances by config file, not name (also xm compatible)
- Start paused domains with -p and not --paused (also xm compatible)
- Add a fixme for migration (changes are not xm compatible)

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

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

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

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

* hv_kvm.py, hv_xen.py
  - return the hypervisor version (if available) from GetNodeInfo

* cmdlib.py
  - if hypervisor version is available during the migration, and the
    versions differ, warn the user

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