root / lib / objects.py @ 8ee9a4f0
History | View | Annotate | Download (65.3 kB)
1 |
#
|
---|---|
2 |
#
|
3 |
|
4 |
# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Google Inc.
|
5 |
#
|
6 |
# This program is free software; you can redistribute it and/or modify
|
7 |
# it under the terms of the GNU General Public License as published by
|
8 |
# the Free Software Foundation; either version 2 of the License, or
|
9 |
# (at your option) any later version.
|
10 |
#
|
11 |
# This program is distributed in the hope that it will be useful, but
|
12 |
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 |
# General Public License for more details.
|
15 |
#
|
16 |
# You should have received a copy of the GNU General Public License
|
17 |
# along with this program; if not, write to the Free Software
|
18 |
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 |
# 02110-1301, USA.
|
20 |
|
21 |
|
22 |
"""Transportable objects for Ganeti.
|
23 |
|
24 |
This module provides small, mostly data-only objects which are safe to
|
25 |
pass to and from external parties.
|
26 |
|
27 |
"""
|
28 |
|
29 |
# pylint: disable=E0203,W0201,R0902
|
30 |
|
31 |
# E0203: Access to member %r before its definition, since we use
|
32 |
# objects.py which doesn't explicitly initialise its members
|
33 |
|
34 |
# W0201: Attribute '%s' defined outside __init__
|
35 |
|
36 |
# R0902: Allow instances of these objects to have more than 20 attributes
|
37 |
|
38 |
import ConfigParser |
39 |
import re |
40 |
import copy |
41 |
import logging |
42 |
import time |
43 |
from cStringIO import StringIO |
44 |
|
45 |
from ganeti import errors |
46 |
from ganeti import constants |
47 |
from ganeti import netutils |
48 |
from ganeti import outils |
49 |
from ganeti import utils |
50 |
|
51 |
from socket import AF_INET |
52 |
|
53 |
|
54 |
__all__ = ["ConfigObject", "ConfigData", "NIC", "Disk", "Instance", |
55 |
"OS", "Node", "NodeGroup", "Cluster", "FillDict", "Network"] |
56 |
|
57 |
_TIMESTAMPS = ["ctime", "mtime"] |
58 |
_UUID = ["uuid"]
|
59 |
|
60 |
|
61 |
def FillDict(defaults_dict, custom_dict, skip_keys=None): |
62 |
"""Basic function to apply settings on top a default dict.
|
63 |
|
64 |
@type defaults_dict: dict
|
65 |
@param defaults_dict: dictionary holding the default values
|
66 |
@type custom_dict: dict
|
67 |
@param custom_dict: dictionary holding customized value
|
68 |
@type skip_keys: list
|
69 |
@param skip_keys: which keys not to fill
|
70 |
@rtype: dict
|
71 |
@return: dict with the 'full' values
|
72 |
|
73 |
"""
|
74 |
ret_dict = copy.deepcopy(defaults_dict) |
75 |
ret_dict.update(custom_dict) |
76 |
if skip_keys:
|
77 |
for k in skip_keys: |
78 |
try:
|
79 |
del ret_dict[k]
|
80 |
except KeyError: |
81 |
pass
|
82 |
return ret_dict
|
83 |
|
84 |
|
85 |
def FillIPolicy(default_ipolicy, custom_ipolicy): |
86 |
"""Fills an instance policy with defaults.
|
87 |
|
88 |
"""
|
89 |
assert frozenset(default_ipolicy.keys()) == constants.IPOLICY_ALL_KEYS |
90 |
ret_dict = copy.deepcopy(custom_ipolicy) |
91 |
for key in default_ipolicy: |
92 |
if key not in ret_dict: |
93 |
ret_dict[key] = copy.deepcopy(default_ipolicy[key]) |
94 |
elif key == constants.ISPECS_STD:
|
95 |
ret_dict[key] = FillDict(default_ipolicy[key], ret_dict[key]) |
96 |
return ret_dict
|
97 |
|
98 |
|
99 |
def FillDiskParams(default_dparams, custom_dparams, skip_keys=None): |
100 |
"""Fills the disk parameter defaults.
|
101 |
|
102 |
@see: L{FillDict} for parameters and return value
|
103 |
|
104 |
"""
|
105 |
assert frozenset(default_dparams.keys()) == constants.DISK_TEMPLATES |
106 |
|
107 |
return dict((dt, FillDict(default_dparams[dt], custom_dparams.get(dt, {}), |
108 |
skip_keys=skip_keys)) |
109 |
for dt in constants.DISK_TEMPLATES) |
110 |
|
111 |
|
112 |
def UpgradeGroupedParams(target, defaults): |
113 |
"""Update all groups for the target parameter.
|
114 |
|
115 |
@type target: dict of dicts
|
116 |
@param target: {group: {parameter: value}}
|
117 |
@type defaults: dict
|
118 |
@param defaults: default parameter values
|
119 |
|
120 |
"""
|
121 |
if target is None: |
122 |
target = {constants.PP_DEFAULT: defaults} |
123 |
else:
|
124 |
for group in target: |
125 |
target[group] = FillDict(defaults, target[group]) |
126 |
return target
|
127 |
|
128 |
|
129 |
def UpgradeBeParams(target): |
130 |
"""Update the be parameters dict to the new format.
|
131 |
|
132 |
@type target: dict
|
133 |
@param target: "be" parameters dict
|
134 |
|
135 |
"""
|
136 |
if constants.BE_MEMORY in target: |
137 |
memory = target[constants.BE_MEMORY] |
138 |
target[constants.BE_MAXMEM] = memory |
139 |
target[constants.BE_MINMEM] = memory |
140 |
del target[constants.BE_MEMORY]
|
141 |
|
142 |
|
143 |
def UpgradeDiskParams(diskparams): |
144 |
"""Upgrade the disk parameters.
|
145 |
|
146 |
@type diskparams: dict
|
147 |
@param diskparams: disk parameters to upgrade
|
148 |
@rtype: dict
|
149 |
@return: the upgraded disk parameters dict
|
150 |
|
151 |
"""
|
152 |
if not diskparams: |
153 |
result = {} |
154 |
else:
|
155 |
result = FillDiskParams(constants.DISK_DT_DEFAULTS, diskparams) |
156 |
|
157 |
return result
|
158 |
|
159 |
|
160 |
def UpgradeNDParams(ndparams): |
161 |
"""Upgrade ndparams structure.
|
162 |
|
163 |
@type ndparams: dict
|
164 |
@param ndparams: disk parameters to upgrade
|
165 |
@rtype: dict
|
166 |
@return: the upgraded node parameters dict
|
167 |
|
168 |
"""
|
169 |
if ndparams is None: |
170 |
ndparams = {} |
171 |
|
172 |
if (constants.ND_OOB_PROGRAM in ndparams and |
173 |
ndparams[constants.ND_OOB_PROGRAM] is None): |
174 |
# will be reset by the line below
|
175 |
del ndparams[constants.ND_OOB_PROGRAM]
|
176 |
return FillDict(constants.NDC_DEFAULTS, ndparams)
|
177 |
|
178 |
|
179 |
def MakeEmptyIPolicy(): |
180 |
"""Create empty IPolicy dictionary.
|
181 |
|
182 |
"""
|
183 |
return {}
|
184 |
|
185 |
|
186 |
class ConfigObject(outils.ValidatedSlots): |
187 |
"""A generic config object.
|
188 |
|
189 |
It has the following properties:
|
190 |
|
191 |
- provides somewhat safe recursive unpickling and pickling for its classes
|
192 |
- unset attributes which are defined in slots are always returned
|
193 |
as None instead of raising an error
|
194 |
|
195 |
Classes derived from this must always declare __slots__ (we use many
|
196 |
config objects and the memory reduction is useful)
|
197 |
|
198 |
"""
|
199 |
__slots__ = [] |
200 |
|
201 |
def __getattr__(self, name): |
202 |
if name not in self.GetAllSlots(): |
203 |
raise AttributeError("Invalid object attribute %s.%s" % |
204 |
(type(self).__name__, name)) |
205 |
return None |
206 |
|
207 |
def __setstate__(self, state): |
208 |
slots = self.GetAllSlots()
|
209 |
for name in state: |
210 |
if name in slots: |
211 |
setattr(self, name, state[name]) |
212 |
|
213 |
def Validate(self): |
214 |
"""Validates the slots.
|
215 |
|
216 |
"""
|
217 |
|
218 |
def ToDict(self): |
219 |
"""Convert to a dict holding only standard python types.
|
220 |
|
221 |
The generic routine just dumps all of this object's attributes in
|
222 |
a dict. It does not work if the class has children who are
|
223 |
ConfigObjects themselves (e.g. the nics list in an Instance), in
|
224 |
which case the object should subclass the function in order to
|
225 |
make sure all objects returned are only standard python types.
|
226 |
|
227 |
"""
|
228 |
result = {} |
229 |
for name in self.GetAllSlots(): |
230 |
value = getattr(self, name, None) |
231 |
if value is not None: |
232 |
result[name] = value |
233 |
return result
|
234 |
|
235 |
__getstate__ = ToDict |
236 |
|
237 |
@classmethod
|
238 |
def FromDict(cls, val): |
239 |
"""Create an object from a dictionary.
|
240 |
|
241 |
This generic routine takes a dict, instantiates a new instance of
|
242 |
the given class, and sets attributes based on the dict content.
|
243 |
|
244 |
As for `ToDict`, this does not work if the class has children
|
245 |
who are ConfigObjects themselves (e.g. the nics list in an
|
246 |
Instance), in which case the object should subclass the function
|
247 |
and alter the objects.
|
248 |
|
249 |
"""
|
250 |
if not isinstance(val, dict): |
251 |
raise errors.ConfigurationError("Invalid object passed to FromDict:" |
252 |
" expected dict, got %s" % type(val)) |
253 |
val_str = dict([(str(k), v) for k, v in val.iteritems()]) |
254 |
obj = cls(**val_str) # pylint: disable=W0142
|
255 |
return obj
|
256 |
|
257 |
def Copy(self): |
258 |
"""Makes a deep copy of the current object and its children.
|
259 |
|
260 |
"""
|
261 |
dict_form = self.ToDict()
|
262 |
clone_obj = self.__class__.FromDict(dict_form)
|
263 |
return clone_obj
|
264 |
|
265 |
def __repr__(self): |
266 |
"""Implement __repr__ for ConfigObjects."""
|
267 |
return repr(self.ToDict()) |
268 |
|
269 |
def __eq__(self, other): |
270 |
"""Implement __eq__ for ConfigObjects."""
|
271 |
return isinstance(other, self.__class__) and self.ToDict() == other.ToDict() |
272 |
|
273 |
def UpgradeConfig(self): |
274 |
"""Fill defaults for missing configuration values.
|
275 |
|
276 |
This method will be called at configuration load time, and its
|
277 |
implementation will be object dependent.
|
278 |
|
279 |
"""
|
280 |
pass
|
281 |
|
282 |
|
283 |
class TaggableObject(ConfigObject): |
284 |
"""An generic class supporting tags.
|
285 |
|
286 |
"""
|
287 |
__slots__ = ["tags"]
|
288 |
VALID_TAG_RE = re.compile(r"^[\w.+*/:@-]+$")
|
289 |
|
290 |
@classmethod
|
291 |
def ValidateTag(cls, tag): |
292 |
"""Check if a tag is valid.
|
293 |
|
294 |
If the tag is invalid, an errors.TagError will be raised. The
|
295 |
function has no return value.
|
296 |
|
297 |
"""
|
298 |
if not isinstance(tag, basestring): |
299 |
raise errors.TagError("Invalid tag type (not a string)") |
300 |
if len(tag) > constants.MAX_TAG_LEN: |
301 |
raise errors.TagError("Tag too long (>%d characters)" % |
302 |
constants.MAX_TAG_LEN) |
303 |
if not tag: |
304 |
raise errors.TagError("Tags cannot be empty") |
305 |
if not cls.VALID_TAG_RE.match(tag): |
306 |
raise errors.TagError("Tag contains invalid characters") |
307 |
|
308 |
def GetTags(self): |
309 |
"""Return the tags list.
|
310 |
|
311 |
"""
|
312 |
tags = getattr(self, "tags", None) |
313 |
if tags is None: |
314 |
tags = self.tags = set() |
315 |
return tags
|
316 |
|
317 |
def AddTag(self, tag): |
318 |
"""Add a new tag.
|
319 |
|
320 |
"""
|
321 |
self.ValidateTag(tag)
|
322 |
tags = self.GetTags()
|
323 |
if len(tags) >= constants.MAX_TAGS_PER_OBJ: |
324 |
raise errors.TagError("Too many tags") |
325 |
self.GetTags().add(tag)
|
326 |
|
327 |
def RemoveTag(self, tag): |
328 |
"""Remove a tag.
|
329 |
|
330 |
"""
|
331 |
self.ValidateTag(tag)
|
332 |
tags = self.GetTags()
|
333 |
try:
|
334 |
tags.remove(tag) |
335 |
except KeyError: |
336 |
raise errors.TagError("Tag not found") |
337 |
|
338 |
def ToDict(self): |
339 |
"""Taggable-object-specific conversion to standard python types.
|
340 |
|
341 |
This replaces the tags set with a list.
|
342 |
|
343 |
"""
|
344 |
bo = super(TaggableObject, self).ToDict() |
345 |
|
346 |
tags = bo.get("tags", None) |
347 |
if isinstance(tags, set): |
348 |
bo["tags"] = list(tags) |
349 |
return bo
|
350 |
|
351 |
@classmethod
|
352 |
def FromDict(cls, val): |
353 |
"""Custom function for instances.
|
354 |
|
355 |
"""
|
356 |
obj = super(TaggableObject, cls).FromDict(val)
|
357 |
if hasattr(obj, "tags") and isinstance(obj.tags, list): |
358 |
obj.tags = set(obj.tags)
|
359 |
return obj
|
360 |
|
361 |
|
362 |
class MasterNetworkParameters(ConfigObject): |
363 |
"""Network configuration parameters for the master
|
364 |
|
365 |
@ivar uuid: master nodes UUID
|
366 |
@ivar ip: master IP
|
367 |
@ivar netmask: master netmask
|
368 |
@ivar netdev: master network device
|
369 |
@ivar ip_family: master IP family
|
370 |
|
371 |
"""
|
372 |
__slots__ = [ |
373 |
"uuid",
|
374 |
"ip",
|
375 |
"netmask",
|
376 |
"netdev",
|
377 |
"ip_family",
|
378 |
] |
379 |
|
380 |
|
381 |
class ConfigData(ConfigObject): |
382 |
"""Top-level config object."""
|
383 |
__slots__ = [ |
384 |
"version",
|
385 |
"cluster",
|
386 |
"nodes",
|
387 |
"nodegroups",
|
388 |
"instances",
|
389 |
"networks",
|
390 |
"serial_no",
|
391 |
] + _TIMESTAMPS |
392 |
|
393 |
def ToDict(self): |
394 |
"""Custom function for top-level config data.
|
395 |
|
396 |
This just replaces the list of instances, nodes and the cluster
|
397 |
with standard python types.
|
398 |
|
399 |
"""
|
400 |
mydict = super(ConfigData, self).ToDict() |
401 |
mydict["cluster"] = mydict["cluster"].ToDict() |
402 |
for key in "nodes", "instances", "nodegroups", "networks": |
403 |
mydict[key] = outils.ContainerToDicts(mydict[key]) |
404 |
|
405 |
return mydict
|
406 |
|
407 |
@classmethod
|
408 |
def FromDict(cls, val): |
409 |
"""Custom function for top-level config data
|
410 |
|
411 |
"""
|
412 |
obj = super(ConfigData, cls).FromDict(val)
|
413 |
obj.cluster = Cluster.FromDict(obj.cluster) |
414 |
obj.nodes = outils.ContainerFromDicts(obj.nodes, dict, Node)
|
415 |
obj.instances = \ |
416 |
outils.ContainerFromDicts(obj.instances, dict, Instance)
|
417 |
obj.nodegroups = \ |
418 |
outils.ContainerFromDicts(obj.nodegroups, dict, NodeGroup)
|
419 |
obj.networks = outils.ContainerFromDicts(obj.networks, dict, Network)
|
420 |
return obj
|
421 |
|
422 |
def HasAnyDiskOfType(self, dev_type): |
423 |
"""Check if in there is at disk of the given type in the configuration.
|
424 |
|
425 |
@type dev_type: L{constants.DTS_BLOCK}
|
426 |
@param dev_type: the type to look for
|
427 |
@rtype: boolean
|
428 |
@return: boolean indicating if a disk of the given type was found or not
|
429 |
|
430 |
"""
|
431 |
for instance in self.instances.values(): |
432 |
for disk in instance.disks: |
433 |
if disk.IsBasedOnDiskType(dev_type):
|
434 |
return True |
435 |
return False |
436 |
|
437 |
def UpgradeConfig(self): |
438 |
"""Fill defaults for missing configuration values.
|
439 |
|
440 |
"""
|
441 |
self.cluster.UpgradeConfig()
|
442 |
for node in self.nodes.values(): |
443 |
node.UpgradeConfig() |
444 |
for instance in self.instances.values(): |
445 |
instance.UpgradeConfig() |
446 |
self._UpgradeEnabledDiskTemplates()
|
447 |
if self.nodegroups is None: |
448 |
self.nodegroups = {}
|
449 |
for nodegroup in self.nodegroups.values(): |
450 |
nodegroup.UpgradeConfig() |
451 |
InstancePolicy.UpgradeDiskTemplates( |
452 |
nodegroup.ipolicy, self.cluster.enabled_disk_templates)
|
453 |
if self.cluster.drbd_usermode_helper is None: |
454 |
if self.cluster.IsDiskTemplateEnabled(constants.DT_DRBD8): |
455 |
self.cluster.drbd_usermode_helper = constants.DEFAULT_DRBD_HELPER
|
456 |
if self.networks is None: |
457 |
self.networks = {}
|
458 |
for network in self.networks.values(): |
459 |
network.UpgradeConfig() |
460 |
|
461 |
def _UpgradeEnabledDiskTemplates(self): |
462 |
"""Upgrade the cluster's enabled disk templates by inspecting the currently
|
463 |
enabled and/or used disk templates.
|
464 |
|
465 |
"""
|
466 |
if not self.cluster.enabled_disk_templates: |
467 |
template_set = \ |
468 |
set([inst.disk_template for inst in self.instances.values()]) |
469 |
# Add drbd and plain, if lvm is enabled (by specifying a volume group)
|
470 |
if self.cluster.volume_group_name: |
471 |
template_set.add(constants.DT_DRBD8) |
472 |
template_set.add(constants.DT_PLAIN) |
473 |
# Set enabled_disk_templates to the inferred disk templates. Order them
|
474 |
# according to a preference list that is based on Ganeti's history of
|
475 |
# supported disk templates.
|
476 |
self.cluster.enabled_disk_templates = []
|
477 |
for preferred_template in constants.DISK_TEMPLATE_PREFERENCE: |
478 |
if preferred_template in template_set: |
479 |
self.cluster.enabled_disk_templates.append(preferred_template)
|
480 |
template_set.remove(preferred_template) |
481 |
self.cluster.enabled_disk_templates.extend(list(template_set)) |
482 |
InstancePolicy.UpgradeDiskTemplates( |
483 |
self.cluster.ipolicy, self.cluster.enabled_disk_templates) |
484 |
|
485 |
|
486 |
class NIC(ConfigObject): |
487 |
"""Config object representing a network card."""
|
488 |
__slots__ = ["name", "mac", "ip", "network", |
489 |
"nicparams", "netinfo", "pci"] + _UUID |
490 |
|
491 |
@classmethod
|
492 |
def CheckParameterSyntax(cls, nicparams): |
493 |
"""Check the given parameters for validity.
|
494 |
|
495 |
@type nicparams: dict
|
496 |
@param nicparams: dictionary with parameter names/value
|
497 |
@raise errors.ConfigurationError: when a parameter is not valid
|
498 |
|
499 |
"""
|
500 |
mode = nicparams[constants.NIC_MODE] |
501 |
if (mode not in constants.NIC_VALID_MODES and |
502 |
mode != constants.VALUE_AUTO): |
503 |
raise errors.ConfigurationError("Invalid NIC mode '%s'" % mode) |
504 |
|
505 |
if (mode == constants.NIC_MODE_BRIDGED and |
506 |
not nicparams[constants.NIC_LINK]):
|
507 |
raise errors.ConfigurationError("Missing bridged NIC link") |
508 |
|
509 |
|
510 |
class Disk(ConfigObject): |
511 |
"""Config object representing a block device."""
|
512 |
__slots__ = (["name", "dev_type", "logical_id", "children", "iv_name", |
513 |
"size", "mode", "params", "spindles", "pci"] + _UUID + |
514 |
# dynamic_params is special. It depends on the node this instance
|
515 |
# is sent to, and should not be persisted.
|
516 |
["dynamic_params"])
|
517 |
|
518 |
def CreateOnSecondary(self): |
519 |
"""Test if this device needs to be created on a secondary node."""
|
520 |
return self.dev_type in (constants.DT_DRBD8, constants.DT_PLAIN) |
521 |
|
522 |
def AssembleOnSecondary(self): |
523 |
"""Test if this device needs to be assembled on a secondary node."""
|
524 |
return self.dev_type in (constants.DT_DRBD8, constants.DT_PLAIN) |
525 |
|
526 |
def OpenOnSecondary(self): |
527 |
"""Test if this device needs to be opened on a secondary node."""
|
528 |
return self.dev_type in (constants.DT_PLAIN,) |
529 |
|
530 |
def StaticDevPath(self): |
531 |
"""Return the device path if this device type has a static one.
|
532 |
|
533 |
Some devices (LVM for example) live always at the same /dev/ path,
|
534 |
irrespective of their status. For such devices, we return this
|
535 |
path, for others we return None.
|
536 |
|
537 |
@warning: The path returned is not a normalized pathname; callers
|
538 |
should check that it is a valid path.
|
539 |
|
540 |
"""
|
541 |
if self.dev_type == constants.DT_PLAIN: |
542 |
return "/dev/%s/%s" % (self.logical_id[0], self.logical_id[1]) |
543 |
elif self.dev_type == constants.DT_BLOCK: |
544 |
return self.logical_id[1] |
545 |
elif self.dev_type == constants.DT_RBD: |
546 |
return "/dev/%s/%s" % (self.logical_id[0], self.logical_id[1]) |
547 |
return None |
548 |
|
549 |
def ChildrenNeeded(self): |
550 |
"""Compute the needed number of children for activation.
|
551 |
|
552 |
This method will return either -1 (all children) or a positive
|
553 |
number denoting the minimum number of children needed for
|
554 |
activation (only mirrored devices will usually return >=0).
|
555 |
|
556 |
Currently, only DRBD8 supports diskless activation (therefore we
|
557 |
return 0), for all other we keep the previous semantics and return
|
558 |
-1.
|
559 |
|
560 |
"""
|
561 |
if self.dev_type == constants.DT_DRBD8: |
562 |
return 0 |
563 |
return -1 |
564 |
|
565 |
def IsBasedOnDiskType(self, dev_type): |
566 |
"""Check if the disk or its children are based on the given type.
|
567 |
|
568 |
@type dev_type: L{constants.DTS_BLOCK}
|
569 |
@param dev_type: the type to look for
|
570 |
@rtype: boolean
|
571 |
@return: boolean indicating if a device of the given type was found or not
|
572 |
|
573 |
"""
|
574 |
if self.children: |
575 |
for child in self.children: |
576 |
if child.IsBasedOnDiskType(dev_type):
|
577 |
return True |
578 |
return self.dev_type == dev_type |
579 |
|
580 |
def GetNodes(self, node_uuid): |
581 |
"""This function returns the nodes this device lives on.
|
582 |
|
583 |
Given the node on which the parent of the device lives on (or, in
|
584 |
case of a top-level device, the primary node of the devices'
|
585 |
instance), this function will return a list of nodes on which this
|
586 |
devices needs to (or can) be assembled.
|
587 |
|
588 |
"""
|
589 |
if self.dev_type in [constants.DT_PLAIN, constants.DT_FILE, |
590 |
constants.DT_BLOCK, constants.DT_RBD, |
591 |
constants.DT_EXT, constants.DT_SHARED_FILE]: |
592 |
result = [node_uuid] |
593 |
elif self.dev_type in constants.DTS_DRBD: |
594 |
result = [self.logical_id[0], self.logical_id[1]] |
595 |
if node_uuid not in result: |
596 |
raise errors.ConfigurationError("DRBD device passed unknown node") |
597 |
else:
|
598 |
raise errors.ProgrammerError("Unhandled device type %s" % self.dev_type) |
599 |
return result
|
600 |
|
601 |
def ComputeNodeTree(self, parent_node_uuid): |
602 |
"""Compute the node/disk tree for this disk and its children.
|
603 |
|
604 |
This method, given the node on which the parent disk lives, will
|
605 |
return the list of all (node UUID, disk) pairs which describe the disk
|
606 |
tree in the most compact way. For example, a drbd/lvm stack
|
607 |
will be returned as (primary_node, drbd) and (secondary_node, drbd)
|
608 |
which represents all the top-level devices on the nodes.
|
609 |
|
610 |
"""
|
611 |
my_nodes = self.GetNodes(parent_node_uuid)
|
612 |
result = [(node, self) for node in my_nodes] |
613 |
if not self.children: |
614 |
# leaf device
|
615 |
return result
|
616 |
for node in my_nodes: |
617 |
for child in self.children: |
618 |
child_result = child.ComputeNodeTree(node) |
619 |
if len(child_result) == 1: |
620 |
# child (and all its descendants) is simple, doesn't split
|
621 |
# over multiple hosts, so we don't need to describe it, our
|
622 |
# own entry for this node describes it completely
|
623 |
continue
|
624 |
else:
|
625 |
# check if child nodes differ from my nodes; note that
|
626 |
# subdisk can differ from the child itself, and be instead
|
627 |
# one of its descendants
|
628 |
for subnode, subdisk in child_result: |
629 |
if subnode not in my_nodes: |
630 |
result.append((subnode, subdisk)) |
631 |
# otherwise child is under our own node, so we ignore this
|
632 |
# entry (but probably the other results in the list will
|
633 |
# be different)
|
634 |
return result
|
635 |
|
636 |
def ComputeGrowth(self, amount): |
637 |
"""Compute the per-VG growth requirements.
|
638 |
|
639 |
This only works for VG-based disks.
|
640 |
|
641 |
@type amount: integer
|
642 |
@param amount: the desired increase in (user-visible) disk space
|
643 |
@rtype: dict
|
644 |
@return: a dictionary of volume-groups and the required size
|
645 |
|
646 |
"""
|
647 |
if self.dev_type == constants.DT_PLAIN: |
648 |
return {self.logical_id[0]: amount} |
649 |
elif self.dev_type == constants.DT_DRBD8: |
650 |
if self.children: |
651 |
return self.children[0].ComputeGrowth(amount) |
652 |
else:
|
653 |
return {}
|
654 |
else:
|
655 |
# Other disk types do not require VG space
|
656 |
return {}
|
657 |
|
658 |
def RecordGrow(self, amount): |
659 |
"""Update the size of this disk after growth.
|
660 |
|
661 |
This method recurses over the disks's children and updates their
|
662 |
size correspondigly. The method needs to be kept in sync with the
|
663 |
actual algorithms from bdev.
|
664 |
|
665 |
"""
|
666 |
if self.dev_type in (constants.DT_PLAIN, constants.DT_FILE, |
667 |
constants.DT_RBD, constants.DT_EXT, |
668 |
constants.DT_SHARED_FILE): |
669 |
self.size += amount
|
670 |
elif self.dev_type == constants.DT_DRBD8: |
671 |
if self.children: |
672 |
self.children[0].RecordGrow(amount) |
673 |
self.size += amount
|
674 |
else:
|
675 |
raise errors.ProgrammerError("Disk.RecordGrow called for unsupported" |
676 |
" disk type %s" % self.dev_type) |
677 |
|
678 |
def Update(self, size=None, mode=None, spindles=None): |
679 |
"""Apply changes to size, spindles and mode.
|
680 |
|
681 |
"""
|
682 |
if self.dev_type == constants.DT_DRBD8: |
683 |
if self.children: |
684 |
self.children[0].Update(size=size, mode=mode) |
685 |
else:
|
686 |
assert not self.children |
687 |
|
688 |
if size is not None: |
689 |
self.size = size
|
690 |
if mode is not None: |
691 |
self.mode = mode
|
692 |
if spindles is not None: |
693 |
self.spindles = spindles
|
694 |
|
695 |
def UnsetSize(self): |
696 |
"""Sets recursively the size to zero for the disk and its children.
|
697 |
|
698 |
"""
|
699 |
if self.children: |
700 |
for child in self.children: |
701 |
child.UnsetSize() |
702 |
self.size = 0 |
703 |
|
704 |
def UpdateDynamicDiskParams(self, target_node_uuid, nodes_ip): |
705 |
"""Updates the dynamic disk params for the given node.
|
706 |
|
707 |
This is mainly used for drbd, which needs ip/port configuration.
|
708 |
|
709 |
Arguments:
|
710 |
- target_node_uuid: the node UUID we wish to configure for
|
711 |
- nodes_ip: a mapping of node name to ip
|
712 |
|
713 |
The target_node must exist in nodes_ip, and should be one of the
|
714 |
nodes in the logical ID if this device is a DRBD device.
|
715 |
|
716 |
"""
|
717 |
if self.children: |
718 |
for child in self.children: |
719 |
child.UpdateDynamicDiskParams(target_node_uuid, nodes_ip) |
720 |
|
721 |
dyn_disk_params = {} |
722 |
if self.logical_id is not None and self.dev_type in constants.DTS_DRBD: |
723 |
pnode_uuid, snode_uuid, _, pminor, sminor, _ = self.logical_id
|
724 |
if target_node_uuid not in (pnode_uuid, snode_uuid): |
725 |
# disk object is being sent to neither the primary nor the secondary
|
726 |
# node. reset the dynamic parameters, the target node is not
|
727 |
# supposed to use them.
|
728 |
self.dynamic_params = dyn_disk_params
|
729 |
return
|
730 |
|
731 |
pnode_ip = nodes_ip.get(pnode_uuid, None)
|
732 |
snode_ip = nodes_ip.get(snode_uuid, None)
|
733 |
if pnode_ip is None or snode_ip is None: |
734 |
raise errors.ConfigurationError("Can't find primary or secondary node" |
735 |
" for %s" % str(self)) |
736 |
if pnode_uuid == target_node_uuid:
|
737 |
dyn_disk_params[constants.DDP_LOCAL_IP] = pnode_ip |
738 |
dyn_disk_params[constants.DDP_REMOTE_IP] = snode_ip |
739 |
dyn_disk_params[constants.DDP_LOCAL_MINOR] = pminor |
740 |
dyn_disk_params[constants.DDP_REMOTE_MINOR] = sminor |
741 |
else: # it must be secondary, we tested above |
742 |
dyn_disk_params[constants.DDP_LOCAL_IP] = snode_ip |
743 |
dyn_disk_params[constants.DDP_REMOTE_IP] = pnode_ip |
744 |
dyn_disk_params[constants.DDP_LOCAL_MINOR] = sminor |
745 |
dyn_disk_params[constants.DDP_REMOTE_MINOR] = pminor |
746 |
|
747 |
self.dynamic_params = dyn_disk_params
|
748 |
|
749 |
# pylint: disable=W0221
|
750 |
def ToDict(self, include_dynamic_params=False): |
751 |
"""Disk-specific conversion to standard python types.
|
752 |
|
753 |
This replaces the children lists of objects with lists of
|
754 |
standard python types.
|
755 |
|
756 |
"""
|
757 |
bo = super(Disk, self).ToDict() |
758 |
if not include_dynamic_params and "dynamic_params" in bo: |
759 |
del bo["dynamic_params"] |
760 |
|
761 |
for attr in ("children",): |
762 |
alist = bo.get(attr, None)
|
763 |
if alist:
|
764 |
bo[attr] = outils.ContainerToDicts(alist) |
765 |
return bo
|
766 |
|
767 |
@classmethod
|
768 |
def FromDict(cls, val): |
769 |
"""Custom function for Disks
|
770 |
|
771 |
"""
|
772 |
obj = super(Disk, cls).FromDict(val)
|
773 |
if obj.children:
|
774 |
obj.children = outils.ContainerFromDicts(obj.children, list, Disk)
|
775 |
if obj.logical_id and isinstance(obj.logical_id, list): |
776 |
obj.logical_id = tuple(obj.logical_id)
|
777 |
if obj.dev_type in constants.DTS_DRBD: |
778 |
# we need a tuple of length six here
|
779 |
if len(obj.logical_id) < 6: |
780 |
obj.logical_id += (None,) * (6 - len(obj.logical_id)) |
781 |
return obj
|
782 |
|
783 |
def __str__(self): |
784 |
"""Custom str() formatter for disks.
|
785 |
|
786 |
"""
|
787 |
if self.dev_type == constants.DT_PLAIN: |
788 |
val = "<LogicalVolume(/dev/%s/%s" % self.logical_id |
789 |
elif self.dev_type in constants.DTS_DRBD: |
790 |
node_a, node_b, port, minor_a, minor_b = self.logical_id[:5] |
791 |
val = "<DRBD8("
|
792 |
|
793 |
val += ("hosts=%s/%d-%s/%d, port=%s, " %
|
794 |
(node_a, minor_a, node_b, minor_b, port)) |
795 |
if self.children and self.children.count(None) == 0: |
796 |
val += "backend=%s, metadev=%s" % (self.children[0], self.children[1]) |
797 |
else:
|
798 |
val += "no local storage"
|
799 |
else:
|
800 |
val = ("<Disk(type=%s, logical_id=%s, children=%s" %
|
801 |
(self.dev_type, self.logical_id, self.children)) |
802 |
if self.iv_name is None: |
803 |
val += ", not visible"
|
804 |
else:
|
805 |
val += ", visible as /dev/%s" % self.iv_name |
806 |
if self.spindles is not None: |
807 |
val += ", spindles=%s" % self.spindles |
808 |
if isinstance(self.size, int): |
809 |
val += ", size=%dm)>" % self.size |
810 |
else:
|
811 |
val += ", size='%s')>" % (self.size,) |
812 |
return val
|
813 |
|
814 |
def Verify(self): |
815 |
"""Checks that this disk is correctly configured.
|
816 |
|
817 |
"""
|
818 |
all_errors = [] |
819 |
if self.mode not in constants.DISK_ACCESS_SET: |
820 |
all_errors.append("Disk access mode '%s' is invalid" % (self.mode, )) |
821 |
return all_errors
|
822 |
|
823 |
def UpgradeConfig(self): |
824 |
"""Fill defaults for missing configuration values.
|
825 |
|
826 |
"""
|
827 |
if self.children: |
828 |
for child in self.children: |
829 |
child.UpgradeConfig() |
830 |
|
831 |
# FIXME: Make this configurable in Ganeti 2.7
|
832 |
self.params = {}
|
833 |
# add here config upgrade for this disk
|
834 |
|
835 |
# map of legacy device types (mapping differing LD constants to new
|
836 |
# DT constants)
|
837 |
LEG_DEV_TYPE_MAP = {"lvm": constants.DT_PLAIN, "drbd8": constants.DT_DRBD8} |
838 |
if self.dev_type in LEG_DEV_TYPE_MAP: |
839 |
self.dev_type = LEG_DEV_TYPE_MAP[self.dev_type] |
840 |
|
841 |
@staticmethod
|
842 |
def ComputeLDParams(disk_template, disk_params): |
843 |
"""Computes Logical Disk parameters from Disk Template parameters.
|
844 |
|
845 |
@type disk_template: string
|
846 |
@param disk_template: disk template, one of L{constants.DISK_TEMPLATES}
|
847 |
@type disk_params: dict
|
848 |
@param disk_params: disk template parameters;
|
849 |
dict(template_name -> parameters
|
850 |
@rtype: list(dict)
|
851 |
@return: a list of dicts, one for each node of the disk hierarchy. Each dict
|
852 |
contains the LD parameters of the node. The tree is flattened in-order.
|
853 |
|
854 |
"""
|
855 |
if disk_template not in constants.DISK_TEMPLATES: |
856 |
raise errors.ProgrammerError("Unknown disk template %s" % disk_template) |
857 |
|
858 |
assert disk_template in disk_params |
859 |
|
860 |
result = list()
|
861 |
dt_params = disk_params[disk_template] |
862 |
if disk_template == constants.DT_DRBD8:
|
863 |
result.append(FillDict(constants.DISK_LD_DEFAULTS[constants.DT_DRBD8], { |
864 |
constants.LDP_RESYNC_RATE: dt_params[constants.DRBD_RESYNC_RATE], |
865 |
constants.LDP_BARRIERS: dt_params[constants.DRBD_DISK_BARRIERS], |
866 |
constants.LDP_NO_META_FLUSH: dt_params[constants.DRBD_META_BARRIERS], |
867 |
constants.LDP_DEFAULT_METAVG: dt_params[constants.DRBD_DEFAULT_METAVG], |
868 |
constants.LDP_DISK_CUSTOM: dt_params[constants.DRBD_DISK_CUSTOM], |
869 |
constants.LDP_NET_CUSTOM: dt_params[constants.DRBD_NET_CUSTOM], |
870 |
constants.LDP_PROTOCOL: dt_params[constants.DRBD_PROTOCOL], |
871 |
constants.LDP_DYNAMIC_RESYNC: dt_params[constants.DRBD_DYNAMIC_RESYNC], |
872 |
constants.LDP_PLAN_AHEAD: dt_params[constants.DRBD_PLAN_AHEAD], |
873 |
constants.LDP_FILL_TARGET: dt_params[constants.DRBD_FILL_TARGET], |
874 |
constants.LDP_DELAY_TARGET: dt_params[constants.DRBD_DELAY_TARGET], |
875 |
constants.LDP_MAX_RATE: dt_params[constants.DRBD_MAX_RATE], |
876 |
constants.LDP_MIN_RATE: dt_params[constants.DRBD_MIN_RATE], |
877 |
})) |
878 |
|
879 |
# data LV
|
880 |
result.append(FillDict(constants.DISK_LD_DEFAULTS[constants.DT_PLAIN], { |
881 |
constants.LDP_STRIPES: dt_params[constants.DRBD_DATA_STRIPES], |
882 |
})) |
883 |
|
884 |
# metadata LV
|
885 |
result.append(FillDict(constants.DISK_LD_DEFAULTS[constants.DT_PLAIN], { |
886 |
constants.LDP_STRIPES: dt_params[constants.DRBD_META_STRIPES], |
887 |
})) |
888 |
|
889 |
elif disk_template in (constants.DT_FILE, constants.DT_SHARED_FILE): |
890 |
result.append(constants.DISK_LD_DEFAULTS[disk_template]) |
891 |
|
892 |
elif disk_template == constants.DT_PLAIN:
|
893 |
result.append(FillDict(constants.DISK_LD_DEFAULTS[constants.DT_PLAIN], { |
894 |
constants.LDP_STRIPES: dt_params[constants.LV_STRIPES], |
895 |
})) |
896 |
|
897 |
elif disk_template == constants.DT_BLOCK:
|
898 |
result.append(constants.DISK_LD_DEFAULTS[constants.DT_BLOCK]) |
899 |
|
900 |
elif disk_template == constants.DT_RBD:
|
901 |
result.append(FillDict(constants.DISK_LD_DEFAULTS[constants.DT_RBD], { |
902 |
constants.LDP_POOL: dt_params[constants.RBD_POOL], |
903 |
constants.LDP_ACCESS: dt_params[constants.RBD_ACCESS], |
904 |
})) |
905 |
|
906 |
elif disk_template == constants.DT_EXT:
|
907 |
result.append(constants.DISK_LD_DEFAULTS[constants.DT_EXT]) |
908 |
|
909 |
return result
|
910 |
|
911 |
|
912 |
class InstancePolicy(ConfigObject): |
913 |
"""Config object representing instance policy limits dictionary.
|
914 |
|
915 |
Note that this object is not actually used in the config, it's just
|
916 |
used as a placeholder for a few functions.
|
917 |
|
918 |
"""
|
919 |
@classmethod
|
920 |
def UpgradeDiskTemplates(cls, ipolicy, enabled_disk_templates): |
921 |
"""Upgrades the ipolicy configuration."""
|
922 |
if constants.IPOLICY_DTS in ipolicy: |
923 |
if not set(ipolicy[constants.IPOLICY_DTS]).issubset( |
924 |
set(enabled_disk_templates)):
|
925 |
ipolicy[constants.IPOLICY_DTS] = list(
|
926 |
set(ipolicy[constants.IPOLICY_DTS]) & set(enabled_disk_templates)) |
927 |
|
928 |
@classmethod
|
929 |
def CheckParameterSyntax(cls, ipolicy, check_std): |
930 |
""" Check the instance policy for validity.
|
931 |
|
932 |
@type ipolicy: dict
|
933 |
@param ipolicy: dictionary with min/max/std specs and policies
|
934 |
@type check_std: bool
|
935 |
@param check_std: Whether to check std value or just assume compliance
|
936 |
@raise errors.ConfigurationError: when the policy is not legal
|
937 |
|
938 |
"""
|
939 |
InstancePolicy.CheckISpecSyntax(ipolicy, check_std) |
940 |
if constants.IPOLICY_DTS in ipolicy: |
941 |
InstancePolicy.CheckDiskTemplates(ipolicy[constants.IPOLICY_DTS]) |
942 |
for key in constants.IPOLICY_PARAMETERS: |
943 |
if key in ipolicy: |
944 |
InstancePolicy.CheckParameter(key, ipolicy[key]) |
945 |
wrong_keys = frozenset(ipolicy.keys()) - constants.IPOLICY_ALL_KEYS
|
946 |
if wrong_keys:
|
947 |
raise errors.ConfigurationError("Invalid keys in ipolicy: %s" % |
948 |
utils.CommaJoin(wrong_keys)) |
949 |
|
950 |
@classmethod
|
951 |
def _CheckIncompleteSpec(cls, spec, keyname): |
952 |
missing_params = constants.ISPECS_PARAMETERS - frozenset(spec.keys())
|
953 |
if missing_params:
|
954 |
msg = ("Missing instance specs parameters for %s: %s" %
|
955 |
(keyname, utils.CommaJoin(missing_params))) |
956 |
raise errors.ConfigurationError(msg)
|
957 |
|
958 |
@classmethod
|
959 |
def CheckISpecSyntax(cls, ipolicy, check_std): |
960 |
"""Check the instance policy specs for validity.
|
961 |
|
962 |
@type ipolicy: dict
|
963 |
@param ipolicy: dictionary with min/max/std specs
|
964 |
@type check_std: bool
|
965 |
@param check_std: Whether to check std value or just assume compliance
|
966 |
@raise errors.ConfigurationError: when specs are not valid
|
967 |
|
968 |
"""
|
969 |
if constants.ISPECS_MINMAX not in ipolicy: |
970 |
# Nothing to check
|
971 |
return
|
972 |
|
973 |
if check_std and constants.ISPECS_STD not in ipolicy: |
974 |
msg = "Missing key in ipolicy: %s" % constants.ISPECS_STD
|
975 |
raise errors.ConfigurationError(msg)
|
976 |
stdspec = ipolicy.get(constants.ISPECS_STD) |
977 |
if check_std:
|
978 |
InstancePolicy._CheckIncompleteSpec(stdspec, constants.ISPECS_STD) |
979 |
|
980 |
if not ipolicy[constants.ISPECS_MINMAX]: |
981 |
raise errors.ConfigurationError("Empty minmax specifications") |
982 |
std_is_good = False
|
983 |
for minmaxspecs in ipolicy[constants.ISPECS_MINMAX]: |
984 |
missing = constants.ISPECS_MINMAX_KEYS - frozenset(minmaxspecs.keys())
|
985 |
if missing:
|
986 |
msg = "Missing instance specification: %s" % utils.CommaJoin(missing)
|
987 |
raise errors.ConfigurationError(msg)
|
988 |
for (key, spec) in minmaxspecs.items(): |
989 |
InstancePolicy._CheckIncompleteSpec(spec, key) |
990 |
|
991 |
spec_std_ok = True
|
992 |
for param in constants.ISPECS_PARAMETERS: |
993 |
par_std_ok = InstancePolicy._CheckISpecParamSyntax(minmaxspecs, stdspec, |
994 |
param, check_std) |
995 |
spec_std_ok = spec_std_ok and par_std_ok
|
996 |
std_is_good = std_is_good or spec_std_ok
|
997 |
if not std_is_good: |
998 |
raise errors.ConfigurationError("Invalid std specifications") |
999 |
|
1000 |
@classmethod
|
1001 |
def _CheckISpecParamSyntax(cls, minmaxspecs, stdspec, name, check_std): |
1002 |
"""Check the instance policy specs for validity on a given key.
|
1003 |
|
1004 |
We check if the instance specs makes sense for a given key, that is
|
1005 |
if minmaxspecs[min][name] <= stdspec[name] <= minmaxspec[max][name].
|
1006 |
|
1007 |
@type minmaxspecs: dict
|
1008 |
@param minmaxspecs: dictionary with min and max instance spec
|
1009 |
@type stdspec: dict
|
1010 |
@param stdspec: dictionary with standard instance spec
|
1011 |
@type name: string
|
1012 |
@param name: what are the limits for
|
1013 |
@type check_std: bool
|
1014 |
@param check_std: Whether to check std value or just assume compliance
|
1015 |
@rtype: bool
|
1016 |
@return: C{True} when specs are valid, C{False} when standard spec for the
|
1017 |
given name is not valid
|
1018 |
@raise errors.ConfigurationError: when min/max specs for the given name
|
1019 |
are not valid
|
1020 |
|
1021 |
"""
|
1022 |
minspec = minmaxspecs[constants.ISPECS_MIN] |
1023 |
maxspec = minmaxspecs[constants.ISPECS_MAX] |
1024 |
min_v = minspec[name] |
1025 |
max_v = maxspec[name] |
1026 |
|
1027 |
if min_v > max_v:
|
1028 |
err = ("Invalid specification of min/max values for %s: %s/%s" %
|
1029 |
(name, min_v, max_v)) |
1030 |
raise errors.ConfigurationError(err)
|
1031 |
elif check_std:
|
1032 |
std_v = stdspec.get(name, min_v) |
1033 |
return std_v >= min_v and std_v <= max_v |
1034 |
else:
|
1035 |
return True |
1036 |
|
1037 |
@classmethod
|
1038 |
def CheckDiskTemplates(cls, disk_templates): |
1039 |
"""Checks the disk templates for validity.
|
1040 |
|
1041 |
"""
|
1042 |
if not disk_templates: |
1043 |
raise errors.ConfigurationError("Instance policy must contain" + |
1044 |
" at least one disk template")
|
1045 |
wrong = frozenset(disk_templates).difference(constants.DISK_TEMPLATES)
|
1046 |
if wrong:
|
1047 |
raise errors.ConfigurationError("Invalid disk template(s) %s" % |
1048 |
utils.CommaJoin(wrong)) |
1049 |
|
1050 |
@classmethod
|
1051 |
def CheckParameter(cls, key, value): |
1052 |
"""Checks a parameter.
|
1053 |
|
1054 |
Currently we expect all parameters to be float values.
|
1055 |
|
1056 |
"""
|
1057 |
try:
|
1058 |
float(value)
|
1059 |
except (TypeError, ValueError), err: |
1060 |
raise errors.ConfigurationError("Invalid value for key" " '%s':" |
1061 |
" '%s', error: %s" % (key, value, err))
|
1062 |
|
1063 |
|
1064 |
class Instance(TaggableObject): |
1065 |
"""Config object representing an instance."""
|
1066 |
__slots__ = [ |
1067 |
"name",
|
1068 |
"primary_node",
|
1069 |
"os",
|
1070 |
"hypervisor",
|
1071 |
"hvparams",
|
1072 |
"beparams",
|
1073 |
"osparams",
|
1074 |
"admin_state",
|
1075 |
"nics",
|
1076 |
"disks",
|
1077 |
"disk_template",
|
1078 |
"disks_active",
|
1079 |
"network_port",
|
1080 |
"serial_no",
|
1081 |
] + _TIMESTAMPS + _UUID |
1082 |
|
1083 |
def _ComputeSecondaryNodes(self): |
1084 |
"""Compute the list of secondary nodes.
|
1085 |
|
1086 |
This is a simple wrapper over _ComputeAllNodes.
|
1087 |
|
1088 |
"""
|
1089 |
all_nodes = set(self._ComputeAllNodes()) |
1090 |
all_nodes.discard(self.primary_node)
|
1091 |
return tuple(all_nodes) |
1092 |
|
1093 |
secondary_nodes = property(_ComputeSecondaryNodes, None, None, |
1094 |
"List of names of secondary nodes")
|
1095 |
|
1096 |
def _ComputeAllNodes(self): |
1097 |
"""Compute the list of all nodes.
|
1098 |
|
1099 |
Since the data is already there (in the drbd disks), keeping it as
|
1100 |
a separate normal attribute is redundant and if not properly
|
1101 |
synchronised can cause problems. Thus it's better to compute it
|
1102 |
dynamically.
|
1103 |
|
1104 |
"""
|
1105 |
def _Helper(nodes, device): |
1106 |
"""Recursively computes nodes given a top device."""
|
1107 |
if device.dev_type in constants.DTS_DRBD: |
1108 |
nodea, nodeb = device.logical_id[:2]
|
1109 |
nodes.add(nodea) |
1110 |
nodes.add(nodeb) |
1111 |
if device.children:
|
1112 |
for child in device.children: |
1113 |
_Helper(nodes, child) |
1114 |
|
1115 |
all_nodes = set()
|
1116 |
all_nodes.add(self.primary_node)
|
1117 |
for device in self.disks: |
1118 |
_Helper(all_nodes, device) |
1119 |
return tuple(all_nodes) |
1120 |
|
1121 |
all_nodes = property(_ComputeAllNodes, None, None, |
1122 |
"List of names of all the nodes of the instance")
|
1123 |
|
1124 |
def MapLVsByNode(self, lvmap=None, devs=None, node_uuid=None): |
1125 |
"""Provide a mapping of nodes to LVs this instance owns.
|
1126 |
|
1127 |
This function figures out what logical volumes should belong on
|
1128 |
which nodes, recursing through a device tree.
|
1129 |
|
1130 |
@type lvmap: dict
|
1131 |
@param lvmap: optional dictionary to receive the
|
1132 |
'node' : ['lv', ...] data.
|
1133 |
@type devs: list of L{Disk}
|
1134 |
@param devs: disks to get the LV name for. If None, all disk of this
|
1135 |
instance are used.
|
1136 |
@type node_uuid: string
|
1137 |
@param node_uuid: UUID of the node to get the LV names for. If None, the
|
1138 |
primary node of this instance is used.
|
1139 |
@return: None if lvmap arg is given, otherwise, a dictionary of
|
1140 |
the form { 'node_uuid' : ['volume1', 'volume2', ...], ... };
|
1141 |
volumeN is of the form "vg_name/lv_name", compatible with
|
1142 |
GetVolumeList()
|
1143 |
|
1144 |
"""
|
1145 |
if node_uuid is None: |
1146 |
node_uuid = self.primary_node
|
1147 |
|
1148 |
if lvmap is None: |
1149 |
lvmap = { |
1150 |
node_uuid: [], |
1151 |
} |
1152 |
ret = lvmap |
1153 |
else:
|
1154 |
if not node_uuid in lvmap: |
1155 |
lvmap[node_uuid] = [] |
1156 |
ret = None
|
1157 |
|
1158 |
if not devs: |
1159 |
devs = self.disks
|
1160 |
|
1161 |
for dev in devs: |
1162 |
if dev.dev_type == constants.DT_PLAIN:
|
1163 |
lvmap[node_uuid].append(dev.logical_id[0] + "/" + dev.logical_id[1]) |
1164 |
|
1165 |
elif dev.dev_type in constants.DTS_DRBD: |
1166 |
if dev.children:
|
1167 |
self.MapLVsByNode(lvmap, dev.children, dev.logical_id[0]) |
1168 |
self.MapLVsByNode(lvmap, dev.children, dev.logical_id[1]) |
1169 |
|
1170 |
elif dev.children:
|
1171 |
self.MapLVsByNode(lvmap, dev.children, node_uuid)
|
1172 |
|
1173 |
return ret
|
1174 |
|
1175 |
def FindDisk(self, idx): |
1176 |
"""Find a disk given having a specified index.
|
1177 |
|
1178 |
This is just a wrapper that does validation of the index.
|
1179 |
|
1180 |
@type idx: int
|
1181 |
@param idx: the disk index
|
1182 |
@rtype: L{Disk}
|
1183 |
@return: the corresponding disk
|
1184 |
@raise errors.OpPrereqError: when the given index is not valid
|
1185 |
|
1186 |
"""
|
1187 |
try:
|
1188 |
idx = int(idx)
|
1189 |
return self.disks[idx] |
1190 |
except (TypeError, ValueError), err: |
1191 |
raise errors.OpPrereqError("Invalid disk index: '%s'" % str(err), |
1192 |
errors.ECODE_INVAL) |
1193 |
except IndexError: |
1194 |
raise errors.OpPrereqError("Invalid disk index: %d (instace has disks" |
1195 |
" 0 to %d" % (idx, len(self.disks) - 1), |
1196 |
errors.ECODE_INVAL) |
1197 |
|
1198 |
def ToDict(self): |
1199 |
"""Instance-specific conversion to standard python types.
|
1200 |
|
1201 |
This replaces the children lists of objects with lists of standard
|
1202 |
python types.
|
1203 |
|
1204 |
"""
|
1205 |
bo = super(Instance, self).ToDict() |
1206 |
|
1207 |
for attr in "nics", "disks": |
1208 |
alist = bo.get(attr, None)
|
1209 |
if alist:
|
1210 |
nlist = outils.ContainerToDicts(alist) |
1211 |
else:
|
1212 |
nlist = [] |
1213 |
bo[attr] = nlist |
1214 |
return bo
|
1215 |
|
1216 |
@classmethod
|
1217 |
def FromDict(cls, val): |
1218 |
"""Custom function for instances.
|
1219 |
|
1220 |
"""
|
1221 |
if "admin_state" not in val: |
1222 |
if val.get("admin_up", False): |
1223 |
val["admin_state"] = constants.ADMINST_UP
|
1224 |
else:
|
1225 |
val["admin_state"] = constants.ADMINST_DOWN
|
1226 |
if "admin_up" in val: |
1227 |
del val["admin_up"] |
1228 |
obj = super(Instance, cls).FromDict(val)
|
1229 |
obj.nics = outils.ContainerFromDicts(obj.nics, list, NIC)
|
1230 |
obj.disks = outils.ContainerFromDicts(obj.disks, list, Disk)
|
1231 |
return obj
|
1232 |
|
1233 |
def UpgradeConfig(self): |
1234 |
"""Fill defaults for missing configuration values.
|
1235 |
|
1236 |
"""
|
1237 |
for nic in self.nics: |
1238 |
nic.UpgradeConfig() |
1239 |
for disk in self.disks: |
1240 |
disk.UpgradeConfig() |
1241 |
if self.hvparams: |
1242 |
for key in constants.HVC_GLOBALS: |
1243 |
try:
|
1244 |
del self.hvparams[key] |
1245 |
except KeyError: |
1246 |
pass
|
1247 |
if self.osparams is None: |
1248 |
self.osparams = {}
|
1249 |
UpgradeBeParams(self.beparams)
|
1250 |
if self.disks_active is None: |
1251 |
self.disks_active = self.admin_state == constants.ADMINST_UP |
1252 |
|
1253 |
|
1254 |
class OS(ConfigObject): |
1255 |
"""Config object representing an operating system.
|
1256 |
|
1257 |
@type supported_parameters: list
|
1258 |
@ivar supported_parameters: a list of tuples, name and description,
|
1259 |
containing the supported parameters by this OS
|
1260 |
|
1261 |
@type VARIANT_DELIM: string
|
1262 |
@cvar VARIANT_DELIM: the variant delimiter
|
1263 |
|
1264 |
"""
|
1265 |
__slots__ = [ |
1266 |
"name",
|
1267 |
"path",
|
1268 |
"api_versions",
|
1269 |
"create_script",
|
1270 |
"export_script",
|
1271 |
"import_script",
|
1272 |
"rename_script",
|
1273 |
"verify_script",
|
1274 |
"supported_variants",
|
1275 |
"supported_parameters",
|
1276 |
] |
1277 |
|
1278 |
VARIANT_DELIM = "+"
|
1279 |
|
1280 |
@classmethod
|
1281 |
def SplitNameVariant(cls, name): |
1282 |
"""Splits the name into the proper name and variant.
|
1283 |
|
1284 |
@param name: the OS (unprocessed) name
|
1285 |
@rtype: list
|
1286 |
@return: a list of two elements; if the original name didn't
|
1287 |
contain a variant, it's returned as an empty string
|
1288 |
|
1289 |
"""
|
1290 |
nv = name.split(cls.VARIANT_DELIM, 1)
|
1291 |
if len(nv) == 1: |
1292 |
nv.append("")
|
1293 |
return nv
|
1294 |
|
1295 |
@classmethod
|
1296 |
def GetName(cls, name): |
1297 |
"""Returns the proper name of the os (without the variant).
|
1298 |
|
1299 |
@param name: the OS (unprocessed) name
|
1300 |
|
1301 |
"""
|
1302 |
return cls.SplitNameVariant(name)[0] |
1303 |
|
1304 |
@classmethod
|
1305 |
def GetVariant(cls, name): |
1306 |
"""Returns the variant the os (without the base name).
|
1307 |
|
1308 |
@param name: the OS (unprocessed) name
|
1309 |
|
1310 |
"""
|
1311 |
return cls.SplitNameVariant(name)[1] |
1312 |
|
1313 |
|
1314 |
class ExtStorage(ConfigObject): |
1315 |
"""Config object representing an External Storage Provider.
|
1316 |
|
1317 |
"""
|
1318 |
__slots__ = [ |
1319 |
"name",
|
1320 |
"path",
|
1321 |
"create_script",
|
1322 |
"remove_script",
|
1323 |
"grow_script",
|
1324 |
"attach_script",
|
1325 |
"detach_script",
|
1326 |
"setinfo_script",
|
1327 |
"verify_script",
|
1328 |
"supported_parameters",
|
1329 |
] |
1330 |
|
1331 |
|
1332 |
class NodeHvState(ConfigObject): |
1333 |
"""Hypvervisor state on a node.
|
1334 |
|
1335 |
@ivar mem_total: Total amount of memory
|
1336 |
@ivar mem_node: Memory used by, or reserved for, the node itself (not always
|
1337 |
available)
|
1338 |
@ivar mem_hv: Memory used by hypervisor or lost due to instance allocation
|
1339 |
rounding
|
1340 |
@ivar mem_inst: Memory used by instances living on node
|
1341 |
@ivar cpu_total: Total node CPU core count
|
1342 |
@ivar cpu_node: Number of CPU cores reserved for the node itself
|
1343 |
|
1344 |
"""
|
1345 |
__slots__ = [ |
1346 |
"mem_total",
|
1347 |
"mem_node",
|
1348 |
"mem_hv",
|
1349 |
"mem_inst",
|
1350 |
"cpu_total",
|
1351 |
"cpu_node",
|
1352 |
] + _TIMESTAMPS |
1353 |
|
1354 |
|
1355 |
class NodeDiskState(ConfigObject): |
1356 |
"""Disk state on a node.
|
1357 |
|
1358 |
"""
|
1359 |
__slots__ = [ |
1360 |
"total",
|
1361 |
"reserved",
|
1362 |
"overhead",
|
1363 |
] + _TIMESTAMPS |
1364 |
|
1365 |
|
1366 |
class Node(TaggableObject): |
1367 |
"""Config object representing a node.
|
1368 |
|
1369 |
@ivar hv_state: Hypervisor state (e.g. number of CPUs)
|
1370 |
@ivar hv_state_static: Hypervisor state overriden by user
|
1371 |
@ivar disk_state: Disk state (e.g. free space)
|
1372 |
@ivar disk_state_static: Disk state overriden by user
|
1373 |
|
1374 |
"""
|
1375 |
__slots__ = [ |
1376 |
"name",
|
1377 |
"primary_ip",
|
1378 |
"secondary_ip",
|
1379 |
"serial_no",
|
1380 |
"master_candidate",
|
1381 |
"offline",
|
1382 |
"drained",
|
1383 |
"group",
|
1384 |
"master_capable",
|
1385 |
"vm_capable",
|
1386 |
"ndparams",
|
1387 |
"powered",
|
1388 |
"hv_state",
|
1389 |
"hv_state_static",
|
1390 |
"disk_state",
|
1391 |
"disk_state_static",
|
1392 |
] + _TIMESTAMPS + _UUID |
1393 |
|
1394 |
def UpgradeConfig(self): |
1395 |
"""Fill defaults for missing configuration values.
|
1396 |
|
1397 |
"""
|
1398 |
# pylint: disable=E0203
|
1399 |
# because these are "defined" via slots, not manually
|
1400 |
if self.master_capable is None: |
1401 |
self.master_capable = True |
1402 |
|
1403 |
if self.vm_capable is None: |
1404 |
self.vm_capable = True |
1405 |
|
1406 |
if self.ndparams is None: |
1407 |
self.ndparams = {}
|
1408 |
# And remove any global parameter
|
1409 |
for key in constants.NDC_GLOBALS: |
1410 |
if key in self.ndparams: |
1411 |
logging.warning("Ignoring %s node parameter for node %s",
|
1412 |
key, self.name)
|
1413 |
del self.ndparams[key] |
1414 |
|
1415 |
if self.powered is None: |
1416 |
self.powered = True |
1417 |
|
1418 |
def ToDict(self): |
1419 |
"""Custom function for serializing.
|
1420 |
|
1421 |
"""
|
1422 |
data = super(Node, self).ToDict() |
1423 |
|
1424 |
hv_state = data.get("hv_state", None) |
1425 |
if hv_state is not None: |
1426 |
data["hv_state"] = outils.ContainerToDicts(hv_state)
|
1427 |
|
1428 |
disk_state = data.get("disk_state", None) |
1429 |
if disk_state is not None: |
1430 |
data["disk_state"] = \
|
1431 |
dict((key, outils.ContainerToDicts(value))
|
1432 |
for (key, value) in disk_state.items()) |
1433 |
|
1434 |
return data
|
1435 |
|
1436 |
@classmethod
|
1437 |
def FromDict(cls, val): |
1438 |
"""Custom function for deserializing.
|
1439 |
|
1440 |
"""
|
1441 |
obj = super(Node, cls).FromDict(val)
|
1442 |
|
1443 |
if obj.hv_state is not None: |
1444 |
obj.hv_state = \ |
1445 |
outils.ContainerFromDicts(obj.hv_state, dict, NodeHvState)
|
1446 |
|
1447 |
if obj.disk_state is not None: |
1448 |
obj.disk_state = \ |
1449 |
dict((key, outils.ContainerFromDicts(value, dict, NodeDiskState)) |
1450 |
for (key, value) in obj.disk_state.items()) |
1451 |
|
1452 |
return obj
|
1453 |
|
1454 |
|
1455 |
class NodeGroup(TaggableObject): |
1456 |
"""Config object representing a node group."""
|
1457 |
__slots__ = [ |
1458 |
"name",
|
1459 |
"members",
|
1460 |
"ndparams",
|
1461 |
"diskparams",
|
1462 |
"ipolicy",
|
1463 |
"serial_no",
|
1464 |
"hv_state_static",
|
1465 |
"disk_state_static",
|
1466 |
"alloc_policy",
|
1467 |
"networks",
|
1468 |
] + _TIMESTAMPS + _UUID |
1469 |
|
1470 |
def ToDict(self): |
1471 |
"""Custom function for nodegroup.
|
1472 |
|
1473 |
This discards the members object, which gets recalculated and is only kept
|
1474 |
in memory.
|
1475 |
|
1476 |
"""
|
1477 |
mydict = super(NodeGroup, self).ToDict() |
1478 |
del mydict["members"] |
1479 |
return mydict
|
1480 |
|
1481 |
@classmethod
|
1482 |
def FromDict(cls, val): |
1483 |
"""Custom function for nodegroup.
|
1484 |
|
1485 |
The members slot is initialized to an empty list, upon deserialization.
|
1486 |
|
1487 |
"""
|
1488 |
obj = super(NodeGroup, cls).FromDict(val)
|
1489 |
obj.members = [] |
1490 |
return obj
|
1491 |
|
1492 |
def UpgradeConfig(self): |
1493 |
"""Fill defaults for missing configuration values.
|
1494 |
|
1495 |
"""
|
1496 |
if self.ndparams is None: |
1497 |
self.ndparams = {}
|
1498 |
|
1499 |
if self.serial_no is None: |
1500 |
self.serial_no = 1 |
1501 |
|
1502 |
if self.alloc_policy is None: |
1503 |
self.alloc_policy = constants.ALLOC_POLICY_PREFERRED
|
1504 |
|
1505 |
# We only update mtime, and not ctime, since we would not be able
|
1506 |
# to provide a correct value for creation time.
|
1507 |
if self.mtime is None: |
1508 |
self.mtime = time.time()
|
1509 |
|
1510 |
if self.diskparams is None: |
1511 |
self.diskparams = {}
|
1512 |
if self.ipolicy is None: |
1513 |
self.ipolicy = MakeEmptyIPolicy()
|
1514 |
|
1515 |
if self.networks is None: |
1516 |
self.networks = {}
|
1517 |
|
1518 |
def FillND(self, node): |
1519 |
"""Return filled out ndparams for L{objects.Node}
|
1520 |
|
1521 |
@type node: L{objects.Node}
|
1522 |
@param node: A Node object to fill
|
1523 |
@return a copy of the node's ndparams with defaults filled
|
1524 |
|
1525 |
"""
|
1526 |
return self.SimpleFillND(node.ndparams) |
1527 |
|
1528 |
def SimpleFillND(self, ndparams): |
1529 |
"""Fill a given ndparams dict with defaults.
|
1530 |
|
1531 |
@type ndparams: dict
|
1532 |
@param ndparams: the dict to fill
|
1533 |
@rtype: dict
|
1534 |
@return: a copy of the passed in ndparams with missing keys filled
|
1535 |
from the node group defaults
|
1536 |
|
1537 |
"""
|
1538 |
return FillDict(self.ndparams, ndparams) |
1539 |
|
1540 |
|
1541 |
class Cluster(TaggableObject): |
1542 |
"""Config object representing the cluster."""
|
1543 |
__slots__ = [ |
1544 |
"serial_no",
|
1545 |
"rsahostkeypub",
|
1546 |
"dsahostkeypub",
|
1547 |
"highest_used_port",
|
1548 |
"tcpudp_port_pool",
|
1549 |
"mac_prefix",
|
1550 |
"volume_group_name",
|
1551 |
"reserved_lvs",
|
1552 |
"drbd_usermode_helper",
|
1553 |
"default_bridge",
|
1554 |
"default_hypervisor",
|
1555 |
"master_node",
|
1556 |
"master_ip",
|
1557 |
"master_netdev",
|
1558 |
"master_netmask",
|
1559 |
"use_external_mip_script",
|
1560 |
"cluster_name",
|
1561 |
"file_storage_dir",
|
1562 |
"shared_file_storage_dir",
|
1563 |
"enabled_hypervisors",
|
1564 |
"hvparams",
|
1565 |
"ipolicy",
|
1566 |
"os_hvp",
|
1567 |
"beparams",
|
1568 |
"osparams",
|
1569 |
"nicparams",
|
1570 |
"ndparams",
|
1571 |
"diskparams",
|
1572 |
"candidate_pool_size",
|
1573 |
"modify_etc_hosts",
|
1574 |
"modify_ssh_setup",
|
1575 |
"maintain_node_health",
|
1576 |
"uid_pool",
|
1577 |
"default_iallocator",
|
1578 |
"hidden_os",
|
1579 |
"blacklisted_os",
|
1580 |
"primary_ip_family",
|
1581 |
"prealloc_wipe_disks",
|
1582 |
"hv_state_static",
|
1583 |
"disk_state_static",
|
1584 |
"enabled_disk_templates",
|
1585 |
] + _TIMESTAMPS + _UUID |
1586 |
|
1587 |
def UpgradeConfig(self): |
1588 |
"""Fill defaults for missing configuration values.
|
1589 |
|
1590 |
"""
|
1591 |
# pylint: disable=E0203
|
1592 |
# because these are "defined" via slots, not manually
|
1593 |
if self.hvparams is None: |
1594 |
self.hvparams = constants.HVC_DEFAULTS
|
1595 |
else:
|
1596 |
for hypervisor in self.hvparams: |
1597 |
self.hvparams[hypervisor] = FillDict(
|
1598 |
constants.HVC_DEFAULTS[hypervisor], self.hvparams[hypervisor])
|
1599 |
|
1600 |
if self.os_hvp is None: |
1601 |
self.os_hvp = {}
|
1602 |
|
1603 |
# osparams added before 2.2
|
1604 |
if self.osparams is None: |
1605 |
self.osparams = {}
|
1606 |
|
1607 |
self.ndparams = UpgradeNDParams(self.ndparams) |
1608 |
|
1609 |
self.beparams = UpgradeGroupedParams(self.beparams, |
1610 |
constants.BEC_DEFAULTS) |
1611 |
for beparams_group in self.beparams: |
1612 |
UpgradeBeParams(self.beparams[beparams_group])
|
1613 |
|
1614 |
migrate_default_bridge = not self.nicparams |
1615 |
self.nicparams = UpgradeGroupedParams(self.nicparams, |
1616 |
constants.NICC_DEFAULTS) |
1617 |
if migrate_default_bridge:
|
1618 |
self.nicparams[constants.PP_DEFAULT][constants.NIC_LINK] = \
|
1619 |
self.default_bridge
|
1620 |
|
1621 |
if self.modify_etc_hosts is None: |
1622 |
self.modify_etc_hosts = True |
1623 |
|
1624 |
if self.modify_ssh_setup is None: |
1625 |
self.modify_ssh_setup = True |
1626 |
|
1627 |
# default_bridge is no longer used in 2.1. The slot is left there to
|
1628 |
# support auto-upgrading. It can be removed once we decide to deprecate
|
1629 |
# upgrading straight from 2.0.
|
1630 |
if self.default_bridge is not None: |
1631 |
self.default_bridge = None |
1632 |
|
1633 |
# default_hypervisor is just the first enabled one in 2.1. This slot and
|
1634 |
# code can be removed once upgrading straight from 2.0 is deprecated.
|
1635 |
if self.default_hypervisor is not None: |
1636 |
self.enabled_hypervisors = ([self.default_hypervisor] + |
1637 |
[hvname for hvname in self.enabled_hypervisors |
1638 |
if hvname != self.default_hypervisor]) |
1639 |
self.default_hypervisor = None |
1640 |
|
1641 |
# maintain_node_health added after 2.1.1
|
1642 |
if self.maintain_node_health is None: |
1643 |
self.maintain_node_health = False |
1644 |
|
1645 |
if self.uid_pool is None: |
1646 |
self.uid_pool = []
|
1647 |
|
1648 |
if self.default_iallocator is None: |
1649 |
self.default_iallocator = "" |
1650 |
|
1651 |
# reserved_lvs added before 2.2
|
1652 |
if self.reserved_lvs is None: |
1653 |
self.reserved_lvs = []
|
1654 |
|
1655 |
# hidden and blacklisted operating systems added before 2.2.1
|
1656 |
if self.hidden_os is None: |
1657 |
self.hidden_os = []
|
1658 |
|
1659 |
if self.blacklisted_os is None: |
1660 |
self.blacklisted_os = []
|
1661 |
|
1662 |
# primary_ip_family added before 2.3
|
1663 |
if self.primary_ip_family is None: |
1664 |
self.primary_ip_family = AF_INET
|
1665 |
|
1666 |
if self.master_netmask is None: |
1667 |
ipcls = netutils.IPAddress.GetClassFromIpFamily(self.primary_ip_family)
|
1668 |
self.master_netmask = ipcls.iplen
|
1669 |
|
1670 |
if self.prealloc_wipe_disks is None: |
1671 |
self.prealloc_wipe_disks = False |
1672 |
|
1673 |
# shared_file_storage_dir added before 2.5
|
1674 |
if self.shared_file_storage_dir is None: |
1675 |
self.shared_file_storage_dir = "" |
1676 |
|
1677 |
if self.use_external_mip_script is None: |
1678 |
self.use_external_mip_script = False |
1679 |
|
1680 |
if self.diskparams: |
1681 |
self.diskparams = UpgradeDiskParams(self.diskparams) |
1682 |
else:
|
1683 |
self.diskparams = constants.DISK_DT_DEFAULTS.copy()
|
1684 |
|
1685 |
# instance policy added before 2.6
|
1686 |
if self.ipolicy is None: |
1687 |
self.ipolicy = FillIPolicy(constants.IPOLICY_DEFAULTS, {})
|
1688 |
else:
|
1689 |
# we can either make sure to upgrade the ipolicy always, or only
|
1690 |
# do it in some corner cases (e.g. missing keys); note that this
|
1691 |
# will break any removal of keys from the ipolicy dict
|
1692 |
wrongkeys = frozenset(self.ipolicy.keys()) - constants.IPOLICY_ALL_KEYS |
1693 |
if wrongkeys:
|
1694 |
# These keys would be silently removed by FillIPolicy()
|
1695 |
msg = ("Cluster instance policy contains spurious keys: %s" %
|
1696 |
utils.CommaJoin(wrongkeys)) |
1697 |
raise errors.ConfigurationError(msg)
|
1698 |
self.ipolicy = FillIPolicy(constants.IPOLICY_DEFAULTS, self.ipolicy) |
1699 |
|
1700 |
@property
|
1701 |
def primary_hypervisor(self): |
1702 |
"""The first hypervisor is the primary.
|
1703 |
|
1704 |
Useful, for example, for L{Node}'s hv/disk state.
|
1705 |
|
1706 |
"""
|
1707 |
return self.enabled_hypervisors[0] |
1708 |
|
1709 |
def ToDict(self): |
1710 |
"""Custom function for cluster.
|
1711 |
|
1712 |
"""
|
1713 |
mydict = super(Cluster, self).ToDict() |
1714 |
|
1715 |
if self.tcpudp_port_pool is None: |
1716 |
tcpudp_port_pool = [] |
1717 |
else:
|
1718 |
tcpudp_port_pool = list(self.tcpudp_port_pool) |
1719 |
|
1720 |
mydict["tcpudp_port_pool"] = tcpudp_port_pool
|
1721 |
|
1722 |
return mydict
|
1723 |
|
1724 |
@classmethod
|
1725 |
def FromDict(cls, val): |
1726 |
"""Custom function for cluster.
|
1727 |
|
1728 |
"""
|
1729 |
obj = super(Cluster, cls).FromDict(val)
|
1730 |
|
1731 |
if obj.tcpudp_port_pool is None: |
1732 |
obj.tcpudp_port_pool = set()
|
1733 |
elif not isinstance(obj.tcpudp_port_pool, set): |
1734 |
obj.tcpudp_port_pool = set(obj.tcpudp_port_pool)
|
1735 |
|
1736 |
return obj
|
1737 |
|
1738 |
def SimpleFillDP(self, diskparams): |
1739 |
"""Fill a given diskparams dict with cluster defaults.
|
1740 |
|
1741 |
@param diskparams: The diskparams
|
1742 |
@return: The defaults dict
|
1743 |
|
1744 |
"""
|
1745 |
return FillDiskParams(self.diskparams, diskparams) |
1746 |
|
1747 |
def GetHVDefaults(self, hypervisor, os_name=None, skip_keys=None): |
1748 |
"""Get the default hypervisor parameters for the cluster.
|
1749 |
|
1750 |
@param hypervisor: the hypervisor name
|
1751 |
@param os_name: if specified, we'll also update the defaults for this OS
|
1752 |
@param skip_keys: if passed, list of keys not to use
|
1753 |
@return: the defaults dict
|
1754 |
|
1755 |
"""
|
1756 |
if skip_keys is None: |
1757 |
skip_keys = [] |
1758 |
|
1759 |
fill_stack = [self.hvparams.get(hypervisor, {})]
|
1760 |
if os_name is not None: |
1761 |
os_hvp = self.os_hvp.get(os_name, {}).get(hypervisor, {})
|
1762 |
fill_stack.append(os_hvp) |
1763 |
|
1764 |
ret_dict = {} |
1765 |
for o_dict in fill_stack: |
1766 |
ret_dict = FillDict(ret_dict, o_dict, skip_keys=skip_keys) |
1767 |
|
1768 |
return ret_dict
|
1769 |
|
1770 |
def SimpleFillHV(self, hv_name, os_name, hvparams, skip_globals=False): |
1771 |
"""Fill a given hvparams dict with cluster defaults.
|
1772 |
|
1773 |
@type hv_name: string
|
1774 |
@param hv_name: the hypervisor to use
|
1775 |
@type os_name: string
|
1776 |
@param os_name: the OS to use for overriding the hypervisor defaults
|
1777 |
@type skip_globals: boolean
|
1778 |
@param skip_globals: if True, the global hypervisor parameters will
|
1779 |
not be filled
|
1780 |
@rtype: dict
|
1781 |
@return: a copy of the given hvparams with missing keys filled from
|
1782 |
the cluster defaults
|
1783 |
|
1784 |
"""
|
1785 |
if skip_globals:
|
1786 |
skip_keys = constants.HVC_GLOBALS |
1787 |
else:
|
1788 |
skip_keys = [] |
1789 |
|
1790 |
def_dict = self.GetHVDefaults(hv_name, os_name, skip_keys=skip_keys)
|
1791 |
return FillDict(def_dict, hvparams, skip_keys=skip_keys)
|
1792 |
|
1793 |
def FillHV(self, instance, skip_globals=False): |
1794 |
"""Fill an instance's hvparams dict with cluster defaults.
|
1795 |
|
1796 |
@type instance: L{objects.Instance}
|
1797 |
@param instance: the instance parameter to fill
|
1798 |
@type skip_globals: boolean
|
1799 |
@param skip_globals: if True, the global hypervisor parameters will
|
1800 |
not be filled
|
1801 |
@rtype: dict
|
1802 |
@return: a copy of the instance's hvparams with missing keys filled from
|
1803 |
the cluster defaults
|
1804 |
|
1805 |
"""
|
1806 |
return self.SimpleFillHV(instance.hypervisor, instance.os, |
1807 |
instance.hvparams, skip_globals) |
1808 |
|
1809 |
def SimpleFillBE(self, beparams): |
1810 |
"""Fill a given beparams dict with cluster defaults.
|
1811 |
|
1812 |
@type beparams: dict
|
1813 |
@param beparams: the dict to fill
|
1814 |
@rtype: dict
|
1815 |
@return: a copy of the passed in beparams with missing keys filled
|
1816 |
from the cluster defaults
|
1817 |
|
1818 |
"""
|
1819 |
return FillDict(self.beparams.get(constants.PP_DEFAULT, {}), beparams) |
1820 |
|
1821 |
def FillBE(self, instance): |
1822 |
"""Fill an instance's beparams dict with cluster defaults.
|
1823 |
|
1824 |
@type instance: L{objects.Instance}
|
1825 |
@param instance: the instance parameter to fill
|
1826 |
@rtype: dict
|
1827 |
@return: a copy of the instance's beparams with missing keys filled from
|
1828 |
the cluster defaults
|
1829 |
|
1830 |
"""
|
1831 |
return self.SimpleFillBE(instance.beparams) |
1832 |
|
1833 |
def SimpleFillNIC(self, nicparams): |
1834 |
"""Fill a given nicparams dict with cluster defaults.
|
1835 |
|
1836 |
@type nicparams: dict
|
1837 |
@param nicparams: the dict to fill
|
1838 |
@rtype: dict
|
1839 |
@return: a copy of the passed in nicparams with missing keys filled
|
1840 |
from the cluster defaults
|
1841 |
|
1842 |
"""
|
1843 |
return FillDict(self.nicparams.get(constants.PP_DEFAULT, {}), nicparams) |
1844 |
|
1845 |
def SimpleFillOS(self, os_name, os_params): |
1846 |
"""Fill an instance's osparams dict with cluster defaults.
|
1847 |
|
1848 |
@type os_name: string
|
1849 |
@param os_name: the OS name to use
|
1850 |
@type os_params: dict
|
1851 |
@param os_params: the dict to fill with default values
|
1852 |
@rtype: dict
|
1853 |
@return: a copy of the instance's osparams with missing keys filled from
|
1854 |
the cluster defaults
|
1855 |
|
1856 |
"""
|
1857 |
name_only = os_name.split("+", 1)[0] |
1858 |
# base OS
|
1859 |
result = self.osparams.get(name_only, {})
|
1860 |
# OS with variant
|
1861 |
result = FillDict(result, self.osparams.get(os_name, {}))
|
1862 |
# specified params
|
1863 |
return FillDict(result, os_params)
|
1864 |
|
1865 |
@staticmethod
|
1866 |
def SimpleFillHvState(hv_state): |
1867 |
"""Fill an hv_state sub dict with cluster defaults.
|
1868 |
|
1869 |
"""
|
1870 |
return FillDict(constants.HVST_DEFAULTS, hv_state)
|
1871 |
|
1872 |
@staticmethod
|
1873 |
def SimpleFillDiskState(disk_state): |
1874 |
"""Fill an disk_state sub dict with cluster defaults.
|
1875 |
|
1876 |
"""
|
1877 |
return FillDict(constants.DS_DEFAULTS, disk_state)
|
1878 |
|
1879 |
def FillND(self, node, nodegroup): |
1880 |
"""Return filled out ndparams for L{objects.NodeGroup} and L{objects.Node}
|
1881 |
|
1882 |
@type node: L{objects.Node}
|
1883 |
@param node: A Node object to fill
|
1884 |
@type nodegroup: L{objects.NodeGroup}
|
1885 |
@param nodegroup: A Node object to fill
|
1886 |
@return a copy of the node's ndparams with defaults filled
|
1887 |
|
1888 |
"""
|
1889 |
return self.SimpleFillND(nodegroup.FillND(node)) |
1890 |
|
1891 |
def SimpleFillND(self, ndparams): |
1892 |
"""Fill a given ndparams dict with defaults.
|
1893 |
|
1894 |
@type ndparams: dict
|
1895 |
@param ndparams: the dict to fill
|
1896 |
@rtype: dict
|
1897 |
@return: a copy of the passed in ndparams with missing keys filled
|
1898 |
from the cluster defaults
|
1899 |
|
1900 |
"""
|
1901 |
return FillDict(self.ndparams, ndparams) |
1902 |
|
1903 |
def SimpleFillIPolicy(self, ipolicy): |
1904 |
""" Fill instance policy dict with defaults.
|
1905 |
|
1906 |
@type ipolicy: dict
|
1907 |
@param ipolicy: the dict to fill
|
1908 |
@rtype: dict
|
1909 |
@return: a copy of passed ipolicy with missing keys filled from
|
1910 |
the cluster defaults
|
1911 |
|
1912 |
"""
|
1913 |
return FillIPolicy(self.ipolicy, ipolicy) |
1914 |
|
1915 |
def IsDiskTemplateEnabled(self, disk_template): |
1916 |
"""Checks if a particular disk template is enabled.
|
1917 |
|
1918 |
"""
|
1919 |
return utils.storage.IsDiskTemplateEnabled(
|
1920 |
disk_template, self.enabled_disk_templates)
|
1921 |
|
1922 |
def IsFileStorageEnabled(self): |
1923 |
"""Checks if file storage is enabled.
|
1924 |
|
1925 |
"""
|
1926 |
return utils.storage.IsFileStorageEnabled(self.enabled_disk_templates) |
1927 |
|
1928 |
def IsSharedFileStorageEnabled(self): |
1929 |
"""Checks if shared file storage is enabled.
|
1930 |
|
1931 |
"""
|
1932 |
return utils.storage.IsSharedFileStorageEnabled(
|
1933 |
self.enabled_disk_templates)
|
1934 |
|
1935 |
|
1936 |
class BlockDevStatus(ConfigObject): |
1937 |
"""Config object representing the status of a block device."""
|
1938 |
__slots__ = [ |
1939 |
"dev_path",
|
1940 |
"major",
|
1941 |
"minor",
|
1942 |
"sync_percent",
|
1943 |
"estimated_time",
|
1944 |
"is_degraded",
|
1945 |
"ldisk_status",
|
1946 |
] |
1947 |
|
1948 |
|
1949 |
class ImportExportStatus(ConfigObject): |
1950 |
"""Config object representing the status of an import or export."""
|
1951 |
__slots__ = [ |
1952 |
"recent_output",
|
1953 |
"listen_port",
|
1954 |
"connected",
|
1955 |
"progress_mbytes",
|
1956 |
"progress_throughput",
|
1957 |
"progress_eta",
|
1958 |
"progress_percent",
|
1959 |
"exit_status",
|
1960 |
"error_message",
|
1961 |
] + _TIMESTAMPS |
1962 |
|
1963 |
|
1964 |
class ImportExportOptions(ConfigObject): |
1965 |
"""Options for import/export daemon
|
1966 |
|
1967 |
@ivar key_name: X509 key name (None for cluster certificate)
|
1968 |
@ivar ca_pem: Remote peer CA in PEM format (None for cluster certificate)
|
1969 |
@ivar compress: Compression method (one of L{constants.IEC_ALL})
|
1970 |
@ivar magic: Used to ensure the connection goes to the right disk
|
1971 |
@ivar ipv6: Whether to use IPv6
|
1972 |
@ivar connect_timeout: Number of seconds for establishing connection
|
1973 |
|
1974 |
"""
|
1975 |
__slots__ = [ |
1976 |
"key_name",
|
1977 |
"ca_pem",
|
1978 |
"compress",
|
1979 |
"magic",
|
1980 |
"ipv6",
|
1981 |
"connect_timeout",
|
1982 |
] |
1983 |
|
1984 |
|
1985 |
class ConfdRequest(ConfigObject): |
1986 |
"""Object holding a confd request.
|
1987 |
|
1988 |
@ivar protocol: confd protocol version
|
1989 |
@ivar type: confd query type
|
1990 |
@ivar query: query request
|
1991 |
@ivar rsalt: requested reply salt
|
1992 |
|
1993 |
"""
|
1994 |
__slots__ = [ |
1995 |
"protocol",
|
1996 |
"type",
|
1997 |
"query",
|
1998 |
"rsalt",
|
1999 |
] |
2000 |
|
2001 |
|
2002 |
class ConfdReply(ConfigObject): |
2003 |
"""Object holding a confd reply.
|
2004 |
|
2005 |
@ivar protocol: confd protocol version
|
2006 |
@ivar status: reply status code (ok, error)
|
2007 |
@ivar answer: confd query reply
|
2008 |
@ivar serial: configuration serial number
|
2009 |
|
2010 |
"""
|
2011 |
__slots__ = [ |
2012 |
"protocol",
|
2013 |
"status",
|
2014 |
"answer",
|
2015 |
"serial",
|
2016 |
] |
2017 |
|
2018 |
|
2019 |
class QueryFieldDefinition(ConfigObject): |
2020 |
"""Object holding a query field definition.
|
2021 |
|
2022 |
@ivar name: Field name
|
2023 |
@ivar title: Human-readable title
|
2024 |
@ivar kind: Field type
|
2025 |
@ivar doc: Human-readable description
|
2026 |
|
2027 |
"""
|
2028 |
__slots__ = [ |
2029 |
"name",
|
2030 |
"title",
|
2031 |
"kind",
|
2032 |
"doc",
|
2033 |
] |
2034 |
|
2035 |
|
2036 |
class _QueryResponseBase(ConfigObject): |
2037 |
__slots__ = [ |
2038 |
"fields",
|
2039 |
] |
2040 |
|
2041 |
def ToDict(self): |
2042 |
"""Custom function for serializing.
|
2043 |
|
2044 |
"""
|
2045 |
mydict = super(_QueryResponseBase, self).ToDict() |
2046 |
mydict["fields"] = outils.ContainerToDicts(mydict["fields"]) |
2047 |
return mydict
|
2048 |
|
2049 |
@classmethod
|
2050 |
def FromDict(cls, val): |
2051 |
"""Custom function for de-serializing.
|
2052 |
|
2053 |
"""
|
2054 |
obj = super(_QueryResponseBase, cls).FromDict(val)
|
2055 |
obj.fields = \ |
2056 |
outils.ContainerFromDicts(obj.fields, list, QueryFieldDefinition)
|
2057 |
return obj
|
2058 |
|
2059 |
|
2060 |
class QueryResponse(_QueryResponseBase): |
2061 |
"""Object holding the response to a query.
|
2062 |
|
2063 |
@ivar fields: List of L{QueryFieldDefinition} objects
|
2064 |
@ivar data: Requested data
|
2065 |
|
2066 |
"""
|
2067 |
__slots__ = [ |
2068 |
"data",
|
2069 |
] |
2070 |
|
2071 |
|
2072 |
class QueryFieldsRequest(ConfigObject): |
2073 |
"""Object holding a request for querying available fields.
|
2074 |
|
2075 |
"""
|
2076 |
__slots__ = [ |
2077 |
"what",
|
2078 |
"fields",
|
2079 |
] |
2080 |
|
2081 |
|
2082 |
class QueryFieldsResponse(_QueryResponseBase): |
2083 |
"""Object holding the response to a query for fields.
|
2084 |
|
2085 |
@ivar fields: List of L{QueryFieldDefinition} objects
|
2086 |
|
2087 |
"""
|
2088 |
__slots__ = [] |
2089 |
|
2090 |
|
2091 |
class MigrationStatus(ConfigObject): |
2092 |
"""Object holding the status of a migration.
|
2093 |
|
2094 |
"""
|
2095 |
__slots__ = [ |
2096 |
"status",
|
2097 |
"transferred_ram",
|
2098 |
"total_ram",
|
2099 |
] |
2100 |
|
2101 |
|
2102 |
class InstanceConsole(ConfigObject): |
2103 |
"""Object describing how to access the console of an instance.
|
2104 |
|
2105 |
"""
|
2106 |
__slots__ = [ |
2107 |
"instance",
|
2108 |
"kind",
|
2109 |
"message",
|
2110 |
"host",
|
2111 |
"port",
|
2112 |
"user",
|
2113 |
"command",
|
2114 |
"display",
|
2115 |
] |
2116 |
|
2117 |
def Validate(self): |
2118 |
"""Validates contents of this object.
|
2119 |
|
2120 |
"""
|
2121 |
assert self.kind in constants.CONS_ALL, "Unknown console type" |
2122 |
assert self.instance, "Missing instance name" |
2123 |
assert self.message or self.kind in [constants.CONS_SSH, |
2124 |
constants.CONS_SPICE, |
2125 |
constants.CONS_VNC] |
2126 |
assert self.host or self.kind == constants.CONS_MESSAGE |
2127 |
assert self.port or self.kind in [constants.CONS_MESSAGE, |
2128 |
constants.CONS_SSH] |
2129 |
assert self.user or self.kind in [constants.CONS_MESSAGE, |
2130 |
constants.CONS_SPICE, |
2131 |
constants.CONS_VNC] |
2132 |
assert self.command or self.kind in [constants.CONS_MESSAGE, |
2133 |
constants.CONS_SPICE, |
2134 |
constants.CONS_VNC] |
2135 |
assert self.display or self.kind in [constants.CONS_MESSAGE, |
2136 |
constants.CONS_SPICE, |
2137 |
constants.CONS_SSH] |
2138 |
return True |
2139 |
|
2140 |
|
2141 |
class Network(TaggableObject): |
2142 |
"""Object representing a network definition for ganeti.
|
2143 |
|
2144 |
"""
|
2145 |
__slots__ = [ |
2146 |
"name",
|
2147 |
"serial_no",
|
2148 |
"mac_prefix",
|
2149 |
"network",
|
2150 |
"network6",
|
2151 |
"gateway",
|
2152 |
"gateway6",
|
2153 |
"reservations",
|
2154 |
"ext_reservations",
|
2155 |
] + _TIMESTAMPS + _UUID |
2156 |
|
2157 |
def HooksDict(self, prefix=""): |
2158 |
"""Export a dictionary used by hooks with a network's information.
|
2159 |
|
2160 |
@type prefix: String
|
2161 |
@param prefix: Prefix to prepend to the dict entries
|
2162 |
|
2163 |
"""
|
2164 |
result = { |
2165 |
"%sNETWORK_NAME" % prefix: self.name, |
2166 |
"%sNETWORK_UUID" % prefix: self.uuid, |
2167 |
"%sNETWORK_TAGS" % prefix: " ".join(self.GetTags()), |
2168 |
} |
2169 |
if self.network: |
2170 |
result["%sNETWORK_SUBNET" % prefix] = self.network |
2171 |
if self.gateway: |
2172 |
result["%sNETWORK_GATEWAY" % prefix] = self.gateway |
2173 |
if self.network6: |
2174 |
result["%sNETWORK_SUBNET6" % prefix] = self.network6 |
2175 |
if self.gateway6: |
2176 |
result["%sNETWORK_GATEWAY6" % prefix] = self.gateway6 |
2177 |
if self.mac_prefix: |
2178 |
result["%sNETWORK_MAC_PREFIX" % prefix] = self.mac_prefix |
2179 |
|
2180 |
return result
|
2181 |
|
2182 |
@classmethod
|
2183 |
def FromDict(cls, val): |
2184 |
"""Custom function for networks.
|
2185 |
|
2186 |
Remove deprecated network_type and family.
|
2187 |
|
2188 |
"""
|
2189 |
if "network_type" in val: |
2190 |
del val["network_type"] |
2191 |
if "family" in val: |
2192 |
del val["family"] |
2193 |
obj = super(Network, cls).FromDict(val)
|
2194 |
return obj
|
2195 |
|
2196 |
|
2197 |
class SerializableConfigParser(ConfigParser.SafeConfigParser): |
2198 |
"""Simple wrapper over ConfigParse that allows serialization.
|
2199 |
|
2200 |
This class is basically ConfigParser.SafeConfigParser with two
|
2201 |
additional methods that allow it to serialize/unserialize to/from a
|
2202 |
buffer.
|
2203 |
|
2204 |
"""
|
2205 |
def Dumps(self): |
2206 |
"""Dump this instance and return the string representation."""
|
2207 |
buf = StringIO() |
2208 |
self.write(buf)
|
2209 |
return buf.getvalue()
|
2210 |
|
2211 |
@classmethod
|
2212 |
def Loads(cls, data): |
2213 |
"""Load data from a string."""
|
2214 |
buf = StringIO(data) |
2215 |
cfp = cls() |
2216 |
cfp.readfp(buf) |
2217 |
return cfp
|
2218 |
|
2219 |
|
2220 |
class LvmPvInfo(ConfigObject): |
2221 |
"""Information about an LVM physical volume (PV).
|
2222 |
|
2223 |
@type name: string
|
2224 |
@ivar name: name of the PV
|
2225 |
@type vg_name: string
|
2226 |
@ivar vg_name: name of the volume group containing the PV
|
2227 |
@type size: float
|
2228 |
@ivar size: size of the PV in MiB
|
2229 |
@type free: float
|
2230 |
@ivar free: free space in the PV, in MiB
|
2231 |
@type attributes: string
|
2232 |
@ivar attributes: PV attributes
|
2233 |
@type lv_list: list of strings
|
2234 |
@ivar lv_list: names of the LVs hosted on the PV
|
2235 |
"""
|
2236 |
__slots__ = [ |
2237 |
"name",
|
2238 |
"vg_name",
|
2239 |
"size",
|
2240 |
"free",
|
2241 |
"attributes",
|
2242 |
"lv_list"
|
2243 |
] |
2244 |
|
2245 |
def IsEmpty(self): |
2246 |
"""Is this PV empty?
|
2247 |
|
2248 |
"""
|
2249 |
return self.size <= (self.free + 1) |
2250 |
|
2251 |
def IsAllocatable(self): |
2252 |
"""Is this PV allocatable?
|
2253 |
|
2254 |
"""
|
2255 |
return ("a" in self.attributes) |