import logging
from ganeti import constants
-from ganeti import errors # pylint: disable-msg=W0611
+from ganeti import errors # pylint: disable=W0611
from ganeti import utils
+from ganeti import objects
+from ganeti import pathutils
from ganeti.hypervisor import hv_base
from ganeti.errors import HypervisorError
- instance alive check is based on whether any process is using the chroot
"""
- _ROOT_DIR = constants.RUN_GANETI_DIR + "/chroot-hypervisor"
+ _ROOT_DIR = pathutils.RUN_DIR + "/chroot-hypervisor"
PARAMETERS = {
constants.HV_INIT_SCRIPT: (True, utils.IsNormAbsPath,
def __init__(self):
hv_base.BaseHypervisor.__init__(self)
- if not os.path.exists(self._ROOT_DIR):
- os.mkdir(self._ROOT_DIR)
- if not os.path.isdir(self._ROOT_DIR):
- raise HypervisorError("Needed path %s is not a directory" %
- self._ROOT_DIR)
+ utils.EnsureDirs([(self._ROOT_DIR, constants.RUN_DIRS_MODE)])
@staticmethod
def _IsDirLive(path):
def _GetMountSubdirs(path):
"""Return the list of mountpoints under a given path.
- This function is Linux-specific.
-
"""
- #TODO(iustin): investigate and document non-linux options
- #(e.g. via mount output)
- data = []
- fh = open("/proc/mounts", "r")
- try:
- for line in fh:
- _, mountpoint, _ = line.split(" ", 2)
- if (mountpoint.startswith(path) and
- mountpoint != path):
- data.append(mountpoint)
- finally:
- fh.close()
- data.sort(key=lambda x: x.count("/"), reverse=True)
- return data
+ result = []
+ for _, mountpoint, _, _ in utils.GetMounts():
+ if (mountpoint.startswith(path) and
+ mountpoint != path):
+ result.append(mountpoint)
+
+ result.sort(key=lambda x: x.count("/"), reverse=True)
+ return result
@classmethod
def _InstanceDir(cls, instance_name):
data.append((file_name, 0, 0, 0, 0, 0))
return data
- def StartInstance(self, instance, block_devices):
+ def StartInstance(self, instance, block_devices, startup_paused):
"""Start an instance.
For the chroot manager, we try to mount the block device and
raise HypervisorError("Can't stop the processes using the chroot")
return
+ def CleanupInstance(self, instance_name):
+ """Cleanup after a stopped instance
+
+ """
+ root_dir = self._InstanceDir(instance_name)
+
+ if not os.path.exists(root_dir):
+ return
+
+ if self._IsDirLive(root_dir):
+ raise HypervisorError("Processes are still using the chroot")
+
for mpath in self._GetMountSubdirs(root_dir):
utils.RunCmd(["umount", mpath])
result = utils.RunCmd(["umount", root_dir])
- if result.failed and force:
+ if result.failed:
msg = ("Processes still alive in the chroot: %s" %
utils.RunCmd("fuser -vm %s" % root_dir).output)
logging.error(msg)
raise HypervisorError("The chroot manager doesn't implement the"
" reboot functionality")
+ 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
+
+ """
+ # Currently chroots don't have memory limits
+ pass
+
def GetNodeInfo(self):
"""Return information about the node.
return self.GetLinuxNodeInfo()
@classmethod
- def GetShellCommandForConsole(cls, instance, hvparams, beparams):
- """Return a command for connecting to the console of an instance.
+ def GetInstanceConsole(cls, instance, # pylint: disable=W0221
+ hvparams, beparams, root_dir=None):
+ """Return information for connecting to the console of an instance.
"""
- root_dir = cls._InstanceDir(instance.name)
- if not os.path.ismount(root_dir):
- raise HypervisorError("Instance %s is not running" % instance.name)
+ if root_dir is None:
+ root_dir = cls._InstanceDir(instance.name)
+ if not os.path.ismount(root_dir):
+ raise HypervisorError("Instance %s is not running" % instance.name)
- return "chroot %s" % root_dir
+ return objects.InstanceConsole(instance=instance.name,
+ kind=constants.CONS_SSH,
+ host=instance.primary_node,
+ user=constants.SSH_CONSOLE_USER,
+ command=["chroot", root_dir])
def Verify(self):
"""Verify the hypervisor.
For the chroot manager, it just checks the existence of the base dir.
+ @return: Problem description if something is wrong, C{None} otherwise
+
"""
- if not os.path.exists(self._ROOT_DIR):
- return "The required directory '%s' does not exist." % self._ROOT_DIR
+ if os.path.exists(self._ROOT_DIR):
+ return None
+ else:
+ return "The required directory '%s' does not exist" % self._ROOT_DIR
@classmethod
def PowercycleNode(cls):
"""
raise HypervisorError("Migration not supported by the chroot hypervisor")
+
+ def GetMigrationStatus(self, instance):
+ """Get the migration status
+
+ @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
+
+ """
+ raise HypervisorError("Migration not supported by the chroot hypervisor")
projects / ganeti-local / blobdiff