from ganeti import utils
from ganeti import constants
from ganeti import errors
+from ganeti import objects
+from ganeti import pathutils
from ganeti.hypervisor import hv_base
a real virtualisation software installed.
"""
- _ROOT_DIR = constants.RUN_DIR + "/ganeti-fake-hypervisor"
+ CAN_MIGRATE = True
+
+ _ROOT_DIR = pathutils.RUN_DIR + "/fake-hypervisor"
def __init__(self):
hv_base.BaseHypervisor.__init__(self)
- if not os.path.exists(self._ROOT_DIR):
- os.mkdir(self._ROOT_DIR)
+ utils.EnsureDirs([(self._ROOT_DIR, constants.RUN_DIRS_MODE)])
def ListInstances(self):
"""Get the list of running instances.
file_name = self._InstanceFile(instance_name)
return os.path.exists(file_name)
- def _MarkUp(self, instance):
+ def _MarkUp(self, instance, memory):
"""Mark the instance as running.
This does no checks, which should be done by its callers.
fh = file(file_name, "w")
try:
fh.write("0\n%d\n%d\n" %
- (instance.beparams[constants.BE_MEMORY],
+ (memory,
instance.beparams[constants.BE_VCPUS]))
finally:
fh.close()
- def _MarkDown(self, instance):
+ def _MarkDown(self, instance_name):
"""Mark the instance as running.
This does no checks, which should be done by its callers.
"""
- file_name = self._InstanceFile(instance.name)
+ file_name = self._InstanceFile(instance_name)
utils.RemoveFile(file_name)
- def StartInstance(self, instance, block_devices):
+ def StartInstance(self, instance, block_devices, startup_paused):
"""Start an instance.
For the fake hypervisor, it just creates a file in the base dir,
raise errors.HypervisorError("Failed to start instance %s: %s" %
(instance.name, "already running"))
try:
- self._MarkUp(instance)
+ self._MarkUp(instance, self._InstanceStartupMemory(instance))
except IOError, err:
raise errors.HypervisorError("Failed to start instance %s: %s" %
(instance.name, err))
- def StopInstance(self, instance, force=False, retry=False):
+ def StopInstance(self, instance, force=False, retry=False, name=None):
"""Stop an instance.
For the fake hypervisor, this just removes the file in the base
dir, if it exist, otherwise we raise an exception.
"""
- if not self._IsAlive(instance.name):
+ if name is None:
+ name = instance.name
+ if not self._IsAlive(name):
raise errors.HypervisorError("Failed to stop instance %s: %s" %
- (instance.name, "not running"))
- self._MarkDown(instance)
+ (name, "not running"))
+ self._MarkDown(name)
def RebootInstance(self, instance):
"""Reboot an instance.
"""
return
+ def BalloonInstanceMemory(self, instance, mem):
+ """Balloon an instance memory to a certain value.
+
+ @type instance: L{objects.Instance}
+ @param instance: instance to be accepted
+ @type mem: int
+ @param mem: actual memory size to use for instance runtime
+
+ """
+ if not self._IsAlive(instance.name):
+ raise errors.HypervisorError("Failed to balloon memory for %s: %s" %
+ (instance.name, "not running"))
+ try:
+ self._MarkUp(instance, mem)
+ except EnvironmentError, err:
+ raise errors.HypervisorError("Failed to balloon memory for %s: %s" %
+ (instance.name, utils.ErrnoOrStr(err)))
+
def GetNodeInfo(self):
"""Return information about the node.
result = self.GetLinuxNodeInfo()
# substract running instances
all_instances = self.GetAllInstancesInfo()
- result['memory_free'] -= min(result['memory_free'],
+ result["memory_free"] -= min(result["memory_free"],
sum([row[2] for row in all_instances]))
return result
@classmethod
- def GetShellCommandForConsole(cls, instance, hvparams, beparams):
- """Return a command for connecting to the console of an instance.
+ def GetInstanceConsole(cls, instance, hvparams, beparams):
+ """Return information for connecting to the console of an instance.
"""
- return "echo Console not available for fake hypervisor"
+ return objects.InstanceConsole(instance=instance.name,
+ kind=constants.CONS_MESSAGE,
+ message=("Console not available for fake"
+ " hypervisor"))
def Verify(self):
"""Verify the hypervisor.
def MigrateInstance(self, instance, target, live):
"""Migrate an instance.
- @type instance: L{object.Instance}
+ @type instance: L{objects.Instance}
@param instance: the instance to be migrated
@type target: string
@param target: hostname (usually ip) of the target node
logging.debug("Fake hypervisor migrating %s to %s (live=%s)",
instance, target, live)
- self._MarkDown(instance)
-
- def FinalizeMigration(self, instance, info, success):
- """Finalize an instance migration.
+ def FinalizeMigrationDst(self, instance, info, success):
+ """Finalize the instance migration on the target node.
For the fake hv, this just marks the instance up.
@type instance: L{objects.Instance}
@param instance: instance whose migration is being finalized
+ @type info: string/data (opaque)
+ @param info: migration information, from the source node
+ @type success: boolean
+ @param success: whether the migration was a success or a failure
"""
if success:
- self._MarkUp(instance)
+ self._MarkUp(instance, self._InstanceStartupMemory(instance))
else:
# ensure it's down
- self._MarkDown(instance)
+ self._MarkDown(instance.name)
+
+ def PostMigrationCleanup(self, instance):
+ """Clean-up after a migration.
+
+ To be executed on the source node.
+
+ @type instance: L{objects.Instance}
+ @param instance: the instance that was migrated
+
+ """
+ pass
+
+ def FinalizeMigrationSource(self, instance, success, live):
+ """Finalize the instance migration on the source node.
+
+ @type instance: L{objects.Instance}
+ @param instance: the instance that was migrated
+ @type success: bool
+ @param success: whether the migration succeeded or not
+ @type live: bool
+ @param live: whether the user requested a live migration or not
+
+ """
+ # pylint: disable=W0613
+ if success:
+ self._MarkDown(instance.name)
+
+ def GetMigrationStatus(self, instance):
+ """Get the migration status
+
+ The fake hypervisor migration always succeeds.
+
+ @type instance: L{objects.Instance}
+ @param instance: the instance that is being migrated
+ @rtype: L{objects.MigrationStatus}
+ @return: the status of the current migration (one of
+ L{constants.HV_MIGRATION_VALID_STATUSES}), plus any additional
+ progress info that can be retrieved from the hypervisor
+
+ """
+ return objects.MigrationStatus(status=constants.HV_MIGRATION_COMPLETED)
projects / ganeti-local / blobdiff