Revision 2e6f0cdf lib/hypervisor/hv_xen.py
| b/lib/hypervisor/hv_xen.py | ||
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""" |
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|
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import logging |
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import errno |
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import string # pylint: disable=W0402 |
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import shutil |
|
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from cStringIO import StringIO |
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|
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from ganeti import constants |
| ... | ... | |
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CAN_MIGRATE = True |
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REBOOT_RETRY_COUNT = 60 |
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REBOOT_RETRY_INTERVAL = 10 |
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_ROOT_DIR = pathutils.RUN_DIR + "/xen-hypervisor" |
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_NICS_DIR = _ROOT_DIR + "/nic" # contains NICs' info |
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_DIRS = [_ROOT_DIR, _NICS_DIR] |
|
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|
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ANCILLARY_FILES = [ |
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XEND_CONFIG_FILE, |
| ... | ... | |
| 373 | 378 |
return utils.PathJoin(self._cfgdir, instance_name) |
| 374 | 379 |
|
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@classmethod |
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def _WriteNICInfoFile(cls, instance_name, idx, nic): |
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"""Write the Xen config file for the instance. |
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|
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This version of the function just writes the config file from static data. |
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""" |
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dirs = [(dname, constants.RUN_DIRS_MODE) |
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for dname in cls._DIRS + [cls._InstanceNICDir(instance_name)]] |
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utils.EnsureDirs(dirs) |
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|
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cfg_file = cls._InstanceNICFile(instance_name, idx) |
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data = StringIO() |
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|
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if nic.netinfo: |
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netinfo = objects.Network.FromDict(nic.netinfo) |
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data.write("NETWORK_NAME=%s\n" % netinfo.name)
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if netinfo.network: |
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data.write("NETWORK_SUBNET=%s\n" % netinfo.network)
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if netinfo.gateway: |
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data.write("NETWORK_GATEWAY=%s\n" % netinfo.gateway)
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if netinfo.network6: |
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data.write("NETWORK_SUBNET6=%s\n" % netinfo.network6)
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if netinfo.gateway6: |
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data.write("NETWORK_GATEWAY6=%s\n" % netinfo.gateway6)
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if netinfo.mac_prefix: |
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data.write("NETWORK_MAC_PREFIX=%s\n" % netinfo.mac_prefix)
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if netinfo.tags: |
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data.write("NETWORK_TAGS=%s\n" % "\ ".join(netinfo.tags))
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data.write("MAC=%s\n" % nic.mac)
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data.write("IP=%s\n" % nic.ip)
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data.write("MODE=%s\n" % nic.nicparams[constants.NIC_MODE])
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data.write("LINK=%s\n" % nic.nicparams[constants.NIC_LINK])
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try: |
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utils.WriteFile(cfg_file, data=data.getvalue()) |
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except EnvironmentError, err: |
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raise errors.HypervisorError("Cannot write Xen instance configuration"
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" file %s: %s" % (cfg_file, err)) |
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|
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@classmethod |
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def _InstanceNICDir(cls, instance_name): |
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"""Returns the directory holding the tap device files for a given instance. |
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|
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""" |
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return utils.PathJoin(cls._NICS_DIR, instance_name) |
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@classmethod |
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def _InstanceNICFile(cls, instance_name, seq): |
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"""Returns the name of the file containing the tap device for a given NIC |
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""" |
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return utils.PathJoin(cls._InstanceNICDir(instance_name), str(seq)) |
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|
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@classmethod |
|
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def _GetConfig(cls, instance, startup_memory, block_devices): |
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"""Build Xen configuration for an instance. |
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|
| ... | ... | |
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|
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""" |
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utils.RemoveFile(self._ConfigFileName(instance_name)) |
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try: |
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shutil.rmtree(self._InstanceNICDir(instance_name)) |
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except OSError, err: |
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if err.errno != errno.ENOENT: |
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raise |
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|
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def _StashConfigFile(self, instance_name): |
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"""Move the Xen config file to the log directory and return its new path. |
| ... | ... | |
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constants.HV_CPU_CAP: hv_base.OPT_NONNEGATIVE_INT_CHECK, |
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constants.HV_CPU_WEIGHT: |
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(False, lambda x: 0 < x < 65536, "invalid weight", None, None), |
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constants.HV_VIF_SCRIPT: hv_base.OPT_FILE_CHECK, |
|
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} |
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|
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def _GetConfig(self, instance, startup_memory, block_devices): |
| ... | ... | |
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config.write("name = '%s'\n" % instance.name)
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vif_data = [] |
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for nic in instance.nics:
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for idx, nic in enumerate(instance.nics):
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nic_str = "mac=%s" % (nic.mac) |
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ip = getattr(nic, "ip", None) |
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if ip is not None: |
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nic_str += ", ip=%s" % ip |
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if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED: |
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nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK] |
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if hvp[constants.HV_VIF_SCRIPT]: |
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nic_str += ", script=%s" % hvp[constants.HV_VIF_SCRIPT] |
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vif_data.append("'%s'" % nic_str)
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self._WriteNICInfoFile(instance.name, idx, nic) |
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disk_data = \ |
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_GetConfigFileDiskData(block_devices, hvp[constants.HV_BLOCKDEV_PREFIX]) |
| ... | ... | |
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constants.HV_VIF_TYPE: |
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hv_base.ParamInSet(False, constants.HT_HVM_VALID_VIF_TYPES), |
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constants.HV_VIRIDIAN: hv_base.NO_CHECK, |
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constants.HV_VIF_SCRIPT: hv_base.OPT_FILE_CHECK, |
|
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} |
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|
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def _GetConfig(self, instance, startup_memory, block_devices): |
| ... | ... | |
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# parameter 'model' is only valid with type 'ioemu' |
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nic_type_str = ", model=%s, type=%s" % \ |
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(nic_type, constants.HT_HVM_VIF_IOEMU) |
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for nic in instance.nics:
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for idx, nic in enumerate(instance.nics):
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nic_str = "mac=%s%s" % (nic.mac, nic_type_str) |
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ip = getattr(nic, "ip", None) |
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if ip is not None: |
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nic_str += ", ip=%s" % ip |
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if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED: |
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nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK] |
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if hvp[constants.HV_VIF_SCRIPT]: |
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nic_str += ", script=%s" % hvp[constants.HV_VIF_SCRIPT] |
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vif_data.append("'%s'" % nic_str)
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self._WriteNICInfoFile(instance.name, idx, nic) |
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|
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config.write("vif = [%s]\n" % ",".join(vif_data))
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