root / lib / hypervisor / hv_xen.py @ 0625d08f
History | View | Annotate | Download (28.5 kB)
1 | 65a6f9b7 | Michael Hanselmann | #
|
---|---|---|---|
2 | 65a6f9b7 | Michael Hanselmann | #
|
3 | 65a6f9b7 | Michael Hanselmann | |
4 | 1a63f285 | Iustin Pop | # Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Google Inc.
|
5 | 65a6f9b7 | Michael Hanselmann | #
|
6 | 65a6f9b7 | Michael Hanselmann | # This program is free software; you can redistribute it and/or modify
|
7 | 65a6f9b7 | Michael Hanselmann | # it under the terms of the GNU General Public License as published by
|
8 | 65a6f9b7 | Michael Hanselmann | # the Free Software Foundation; either version 2 of the License, or
|
9 | 65a6f9b7 | Michael Hanselmann | # (at your option) any later version.
|
10 | 65a6f9b7 | Michael Hanselmann | #
|
11 | 65a6f9b7 | Michael Hanselmann | # This program is distributed in the hope that it will be useful, but
|
12 | 65a6f9b7 | Michael Hanselmann | # WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | 65a6f9b7 | Michael Hanselmann | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | 65a6f9b7 | Michael Hanselmann | # General Public License for more details.
|
15 | 65a6f9b7 | Michael Hanselmann | #
|
16 | 65a6f9b7 | Michael Hanselmann | # You should have received a copy of the GNU General Public License
|
17 | 65a6f9b7 | Michael Hanselmann | # along with this program; if not, write to the Free Software
|
18 | 65a6f9b7 | Michael Hanselmann | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 | 65a6f9b7 | Michael Hanselmann | # 02110-1301, USA.
|
20 | 65a6f9b7 | Michael Hanselmann | |
21 | 65a6f9b7 | Michael Hanselmann | |
22 | 65a6f9b7 | Michael Hanselmann | """Xen hypervisors
|
23 | 65a6f9b7 | Michael Hanselmann |
|
24 | 65a6f9b7 | Michael Hanselmann | """
|
25 | 65a6f9b7 | Michael Hanselmann | |
26 | b48909c8 | Iustin Pop | import logging |
27 | 65a6f9b7 | Michael Hanselmann | from cStringIO import StringIO |
28 | 65a6f9b7 | Michael Hanselmann | |
29 | 65a6f9b7 | Michael Hanselmann | from ganeti import constants |
30 | 65a6f9b7 | Michael Hanselmann | from ganeti import errors |
31 | 65a6f9b7 | Michael Hanselmann | from ganeti import utils |
32 | a2d32034 | Michael Hanselmann | from ganeti.hypervisor import hv_base |
33 | a744b676 | Manuel Franceschini | from ganeti import netutils |
34 | 55cc0a44 | Michael Hanselmann | from ganeti import objects |
35 | 65a6f9b7 | Michael Hanselmann | |
36 | 65a6f9b7 | Michael Hanselmann | |
37 | 22d568c2 | Guido Trotter | XEND_CONFIG_FILE = "/etc/xen/xend-config.sxp"
|
38 | 22d568c2 | Guido Trotter | XL_CONFIG_FILE = "/etc/xen/xl.conf"
|
39 | 22d568c2 | Guido Trotter | VIF_BRIDGE_SCRIPT = "/etc/xen/scripts/vif-bridge"
|
40 | 18bf85b1 | Michael Hanselmann | _DOM0_NAME = "Domain-0"
|
41 | 22d568c2 | Guido Trotter | |
42 | 22d568c2 | Guido Trotter | |
43 | a2d32034 | Michael Hanselmann | class XenHypervisor(hv_base.BaseHypervisor): |
44 | 65a6f9b7 | Michael Hanselmann | """Xen generic hypervisor interface
|
45 | 65a6f9b7 | Michael Hanselmann |
|
46 | 65a6f9b7 | Michael Hanselmann | This is the Xen base class used for both Xen PVM and HVM. It contains
|
47 | 65a6f9b7 | Michael Hanselmann | all the functionality that is identical for both.
|
48 | 65a6f9b7 | Michael Hanselmann |
|
49 | 65a6f9b7 | Michael Hanselmann | """
|
50 | d271c6fd | Iustin Pop | CAN_MIGRATE = True
|
51 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_COUNT = 60
|
52 | 7dd106d3 | Iustin Pop | REBOOT_RETRY_INTERVAL = 10
|
53 | 65a6f9b7 | Michael Hanselmann | |
54 | 3680f662 | Guido Trotter | ANCILLARY_FILES = [ |
55 | 22d568c2 | Guido Trotter | XEND_CONFIG_FILE, |
56 | 22d568c2 | Guido Trotter | XL_CONFIG_FILE, |
57 | 22d568c2 | Guido Trotter | VIF_BRIDGE_SCRIPT, |
58 | 3680f662 | Guido Trotter | ] |
59 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = [ |
60 | 69ab2e12 | Guido Trotter | XL_CONFIG_FILE, |
61 | 3680f662 | Guido Trotter | ] |
62 | 3680f662 | Guido Trotter | |
63 | c2be2532 | Guido Trotter | @staticmethod
|
64 | c2be2532 | Guido Trotter | def _ConfigFileName(instance_name): |
65 | c2be2532 | Guido Trotter | """Get the config file name for an instance.
|
66 | c2be2532 | Guido Trotter |
|
67 | c2be2532 | Guido Trotter | @param instance_name: instance name
|
68 | c2be2532 | Guido Trotter | @type instance_name: str
|
69 | c2be2532 | Guido Trotter | @return: fully qualified path to instance config file
|
70 | c2be2532 | Guido Trotter | @rtype: str
|
71 | c2be2532 | Guido Trotter |
|
72 | c2be2532 | Guido Trotter | """
|
73 | c2be2532 | Guido Trotter | return "/etc/xen/%s" % instance_name |
74 | c2be2532 | Guido Trotter | |
75 | 5661b908 | Iustin Pop | @classmethod
|
76 | 61eb1a46 | Guido Trotter | def _WriteConfigFile(cls, instance, startup_memory, block_devices): |
77 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
|
78 | 65a6f9b7 | Michael Hanselmann |
|
79 | 65a6f9b7 | Michael Hanselmann | """
|
80 | 65a6f9b7 | Michael Hanselmann | raise NotImplementedError |
81 | 65a6f9b7 | Michael Hanselmann | |
82 | 65a6f9b7 | Michael Hanselmann | @staticmethod
|
83 | 4390ccff | Guido Trotter | def _WriteConfigFileStatic(instance_name, data): |
84 | 4390ccff | Guido Trotter | """Write the Xen config file for the instance.
|
85 | 4390ccff | Guido Trotter |
|
86 | 4390ccff | Guido Trotter | This version of the function just writes the config file from static data.
|
87 | 4390ccff | Guido Trotter |
|
88 | 4390ccff | Guido Trotter | """
|
89 | 1a63f285 | Iustin Pop | # just in case it exists
|
90 | 1a63f285 | Iustin Pop | utils.RemoveFile("/etc/xen/auto/%s" % instance_name)
|
91 | 1a63f285 | Iustin Pop | cfg_file = XenHypervisor._ConfigFileName(instance_name) |
92 | 1a63f285 | Iustin Pop | try:
|
93 | 1a63f285 | Iustin Pop | utils.WriteFile(cfg_file, data=data) |
94 | 1a63f285 | Iustin Pop | except EnvironmentError, err: |
95 | 1a63f285 | Iustin Pop | raise errors.HypervisorError("Cannot write Xen instance configuration" |
96 | 1a63f285 | Iustin Pop | " file %s: %s" % (cfg_file, err))
|
97 | 4390ccff | Guido Trotter | |
98 | 4390ccff | Guido Trotter | @staticmethod
|
99 | 4390ccff | Guido Trotter | def _ReadConfigFile(instance_name): |
100 | 4390ccff | Guido Trotter | """Returns the contents of the instance config file.
|
101 | 4390ccff | Guido Trotter |
|
102 | 4390ccff | Guido Trotter | """
|
103 | 4390ccff | Guido Trotter | try:
|
104 | c2be2532 | Guido Trotter | file_content = utils.ReadFile( |
105 | c2be2532 | Guido Trotter | XenHypervisor._ConfigFileName(instance_name)) |
106 | 4390ccff | Guido Trotter | except EnvironmentError, err: |
107 | 4390ccff | Guido Trotter | raise errors.HypervisorError("Failed to load Xen config file: %s" % err) |
108 | 4390ccff | Guido Trotter | return file_content
|
109 | 4390ccff | Guido Trotter | |
110 | 4390ccff | Guido Trotter | @staticmethod
|
111 | 53c776b5 | Iustin Pop | def _RemoveConfigFile(instance_name): |
112 | 65a6f9b7 | Michael Hanselmann | """Remove the xen configuration file.
|
113 | 65a6f9b7 | Michael Hanselmann |
|
114 | 65a6f9b7 | Michael Hanselmann | """
|
115 | c2be2532 | Guido Trotter | utils.RemoveFile(XenHypervisor._ConfigFileName(instance_name)) |
116 | 65a6f9b7 | Michael Hanselmann | |
117 | c4708267 | Tsachy Shacham | @classmethod
|
118 | c4708267 | Tsachy Shacham | def _CreateConfigCpus(cls, cpu_mask): |
119 | c4708267 | Tsachy Shacham | """Create a CPU config string that's compatible with Xen's
|
120 | c4708267 | Tsachy Shacham | configuration file.
|
121 | c4708267 | Tsachy Shacham |
|
122 | c4708267 | Tsachy Shacham | """
|
123 | c4708267 | Tsachy Shacham | # Convert the string CPU mask to a list of list of int's
|
124 | c4708267 | Tsachy Shacham | cpu_list = utils.ParseMultiCpuMask(cpu_mask) |
125 | c4708267 | Tsachy Shacham | |
126 | c4708267 | Tsachy Shacham | if len(cpu_list) == 1: |
127 | c4708267 | Tsachy Shacham | all_cpu_mapping = cpu_list[0]
|
128 | 5b43cc23 | Tsachy Shacham | if all_cpu_mapping == constants.CPU_PINNING_OFF:
|
129 | c4708267 | Tsachy Shacham | # If CPU pinning has 1 entry that's "all", then remove the
|
130 | c4708267 | Tsachy Shacham | # parameter from the config file
|
131 | c4708267 | Tsachy Shacham | return None |
132 | c4708267 | Tsachy Shacham | else:
|
133 | c4708267 | Tsachy Shacham | # If CPU pinning has one non-all entry, mapping all vCPUS (the entire
|
134 | c4708267 | Tsachy Shacham | # VM) to one physical CPU, using format 'cpu = "C"'
|
135 | c4708267 | Tsachy Shacham | return "cpu = \"%s\"" % ",".join(map(str, all_cpu_mapping)) |
136 | c4708267 | Tsachy Shacham | else:
|
137 | c4708267 | Tsachy Shacham | def _GetCPUMap(vcpu): |
138 | c4708267 | Tsachy Shacham | if vcpu[0] == constants.CPU_PINNING_ALL_VAL: |
139 | c4708267 | Tsachy Shacham | cpu_map = constants.CPU_PINNING_ALL_XEN |
140 | c4708267 | Tsachy Shacham | else:
|
141 | c4708267 | Tsachy Shacham | cpu_map = ",".join(map(str, vcpu)) |
142 | c4708267 | Tsachy Shacham | return "\"%s\"" % cpu_map |
143 | c4708267 | Tsachy Shacham | |
144 | c4708267 | Tsachy Shacham | # build the result string in format 'cpus = [ "c", "c", "c" ]',
|
145 | c4708267 | Tsachy Shacham | # where each c is a physical CPU number, a range, a list, or any
|
146 | c4708267 | Tsachy Shacham | # combination
|
147 | c4708267 | Tsachy Shacham | return "cpus = [ %s ]" % ", ".join(map(_GetCPUMap, cpu_list)) |
148 | c4708267 | Tsachy Shacham | |
149 | 65a6f9b7 | Michael Hanselmann | @staticmethod
|
150 | 06b78e8b | Michael Hanselmann | def _RunXmList(xmlist_errors): |
151 | 06b78e8b | Michael Hanselmann | """Helper function for L{_GetXMList} to run "xm list".
|
152 | 06b78e8b | Michael Hanselmann |
|
153 | 06b78e8b | Michael Hanselmann | """
|
154 | 2876c2d6 | Guido Trotter | result = utils.RunCmd([constants.XEN_CMD, "list"])
|
155 | 06b78e8b | Michael Hanselmann | if result.failed:
|
156 | 06b78e8b | Michael Hanselmann | logging.error("xm list failed (%s): %s", result.fail_reason,
|
157 | 06b78e8b | Michael Hanselmann | result.output) |
158 | 06b78e8b | Michael Hanselmann | xmlist_errors.append(result) |
159 | 06b78e8b | Michael Hanselmann | raise utils.RetryAgain()
|
160 | 06b78e8b | Michael Hanselmann | |
161 | 06b78e8b | Michael Hanselmann | # skip over the heading
|
162 | 06b78e8b | Michael Hanselmann | return result.stdout.splitlines()[1:] |
163 | 06b78e8b | Michael Hanselmann | |
164 | 06b78e8b | Michael Hanselmann | @classmethod
|
165 | 06b78e8b | Michael Hanselmann | def _GetXMList(cls, include_node): |
166 | 65a6f9b7 | Michael Hanselmann | """Return the list of running instances.
|
167 | 65a6f9b7 | Michael Hanselmann |
|
168 | c41eea6e | Iustin Pop | If the include_node argument is True, then we return information
|
169 | 65a6f9b7 | Michael Hanselmann | for dom0 also, otherwise we filter that from the return value.
|
170 | 65a6f9b7 | Michael Hanselmann |
|
171 | c41eea6e | Iustin Pop | @return: list of (name, id, memory, vcpus, state, time spent)
|
172 | 65a6f9b7 | Michael Hanselmann |
|
173 | 65a6f9b7 | Michael Hanselmann | """
|
174 | 06b78e8b | Michael Hanselmann | xmlist_errors = [] |
175 | 06b78e8b | Michael Hanselmann | try:
|
176 | 06b78e8b | Michael Hanselmann | lines = utils.Retry(cls._RunXmList, 1, 5, args=(xmlist_errors, )) |
177 | 06b78e8b | Michael Hanselmann | except utils.RetryTimeout:
|
178 | 06b78e8b | Michael Hanselmann | if xmlist_errors:
|
179 | 06b78e8b | Michael Hanselmann | xmlist_result = xmlist_errors.pop() |
180 | 65a6f9b7 | Michael Hanselmann | |
181 | 06b78e8b | Michael Hanselmann | errmsg = ("xm list failed, timeout exceeded (%s): %s" %
|
182 | 06b78e8b | Michael Hanselmann | (xmlist_result.fail_reason, xmlist_result.output)) |
183 | 06b78e8b | Michael Hanselmann | else:
|
184 | 06b78e8b | Michael Hanselmann | errmsg = "xm list failed"
|
185 | 06b78e8b | Michael Hanselmann | |
186 | 06b78e8b | Michael Hanselmann | raise errors.HypervisorError(errmsg)
|
187 | 65a6f9b7 | Michael Hanselmann | |
188 | 65a6f9b7 | Michael Hanselmann | result = [] |
189 | 65a6f9b7 | Michael Hanselmann | for line in lines: |
190 | 65a6f9b7 | Michael Hanselmann | # The format of lines is:
|
191 | 65a6f9b7 | Michael Hanselmann | # Name ID Mem(MiB) VCPUs State Time(s)
|
192 | 65a6f9b7 | Michael Hanselmann | # Domain-0 0 3418 4 r----- 266.2
|
193 | 65a6f9b7 | Michael Hanselmann | data = line.split() |
194 | 65a6f9b7 | Michael Hanselmann | if len(data) != 6: |
195 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
196 | 65a6f9b7 | Michael Hanselmann | " line: %s" % line)
|
197 | 65a6f9b7 | Michael Hanselmann | try:
|
198 | 65a6f9b7 | Michael Hanselmann | data[1] = int(data[1]) |
199 | 65a6f9b7 | Michael Hanselmann | data[2] = int(data[2]) |
200 | 65a6f9b7 | Michael Hanselmann | data[3] = int(data[3]) |
201 | 65a6f9b7 | Michael Hanselmann | data[5] = float(data[5]) |
202 | 691744c4 | Iustin Pop | except (TypeError, ValueError), err: |
203 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Can't parse output of xm list," |
204 | 65a6f9b7 | Michael Hanselmann | " line: %s, error: %s" % (line, err))
|
205 | 65a6f9b7 | Michael Hanselmann | |
206 | 65a6f9b7 | Michael Hanselmann | # skip the Domain-0 (optional)
|
207 | 18bf85b1 | Michael Hanselmann | if include_node or data[0] != _DOM0_NAME: |
208 | 65a6f9b7 | Michael Hanselmann | result.append(data) |
209 | 65a6f9b7 | Michael Hanselmann | |
210 | 65a6f9b7 | Michael Hanselmann | return result
|
211 | 65a6f9b7 | Michael Hanselmann | |
212 | 65a6f9b7 | Michael Hanselmann | def ListInstances(self): |
213 | 65a6f9b7 | Michael Hanselmann | """Get the list of running instances.
|
214 | 65a6f9b7 | Michael Hanselmann |
|
215 | 65a6f9b7 | Michael Hanselmann | """
|
216 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
217 | 65a6f9b7 | Michael Hanselmann | names = [info[0] for info in xm_list] |
218 | 65a6f9b7 | Michael Hanselmann | return names
|
219 | 65a6f9b7 | Michael Hanselmann | |
220 | 65a6f9b7 | Michael Hanselmann | def GetInstanceInfo(self, instance_name): |
221 | 65a6f9b7 | Michael Hanselmann | """Get instance properties.
|
222 | 65a6f9b7 | Michael Hanselmann |
|
223 | c41eea6e | Iustin Pop | @param instance_name: the instance name
|
224 | c41eea6e | Iustin Pop |
|
225 | c41eea6e | Iustin Pop | @return: tuple (name, id, memory, vcpus, stat, times)
|
226 | 65a6f9b7 | Michael Hanselmann |
|
227 | 65a6f9b7 | Michael Hanselmann | """
|
228 | 18bf85b1 | Michael Hanselmann | xm_list = self._GetXMList(instance_name == _DOM0_NAME)
|
229 | 65a6f9b7 | Michael Hanselmann | result = None
|
230 | 65a6f9b7 | Michael Hanselmann | for data in xm_list: |
231 | 65a6f9b7 | Michael Hanselmann | if data[0] == instance_name: |
232 | 65a6f9b7 | Michael Hanselmann | result = data |
233 | 65a6f9b7 | Michael Hanselmann | break
|
234 | 65a6f9b7 | Michael Hanselmann | return result
|
235 | 65a6f9b7 | Michael Hanselmann | |
236 | 65a6f9b7 | Michael Hanselmann | def GetAllInstancesInfo(self): |
237 | 65a6f9b7 | Michael Hanselmann | """Get properties of all instances.
|
238 | 65a6f9b7 | Michael Hanselmann |
|
239 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
|
240 | c41eea6e | Iustin Pop |
|
241 | 65a6f9b7 | Michael Hanselmann | """
|
242 | 65a6f9b7 | Michael Hanselmann | xm_list = self._GetXMList(False) |
243 | 65a6f9b7 | Michael Hanselmann | return xm_list
|
244 | 65a6f9b7 | Michael Hanselmann | |
245 | 323f9095 | Stephen Shirley | def StartInstance(self, instance, block_devices, startup_paused): |
246 | c41eea6e | Iustin Pop | """Start an instance.
|
247 | c41eea6e | Iustin Pop |
|
248 | c41eea6e | Iustin Pop | """
|
249 | 61eb1a46 | Guido Trotter | startup_memory = self._InstanceStartupMemory(instance)
|
250 | 61eb1a46 | Guido Trotter | self._WriteConfigFile(instance, startup_memory, block_devices)
|
251 | 2876c2d6 | Guido Trotter | cmd = [constants.XEN_CMD, "create"]
|
252 | 323f9095 | Stephen Shirley | if startup_paused:
|
253 | 6555373d | Guido Trotter | cmd.extend(["-p"])
|
254 | 6555373d | Guido Trotter | cmd.extend([self._ConfigFileName(instance.name)])
|
255 | 323f9095 | Stephen Shirley | result = utils.RunCmd(cmd) |
256 | 65a6f9b7 | Michael Hanselmann | |
257 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
258 | 65a6f9b7 | Michael Hanselmann | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
259 | 65a6f9b7 | Michael Hanselmann | (instance.name, result.fail_reason, |
260 | 65a6f9b7 | Michael Hanselmann | result.output)) |
261 | 65a6f9b7 | Michael Hanselmann | |
262 | bbcf7ad0 | Iustin Pop | def StopInstance(self, instance, force=False, retry=False, name=None): |
263 | c41eea6e | Iustin Pop | """Stop an instance.
|
264 | c41eea6e | Iustin Pop |
|
265 | c41eea6e | Iustin Pop | """
|
266 | bbcf7ad0 | Iustin Pop | if name is None: |
267 | bbcf7ad0 | Iustin Pop | name = instance.name |
268 | bbcf7ad0 | Iustin Pop | self._RemoveConfigFile(name)
|
269 | 65a6f9b7 | Michael Hanselmann | if force:
|
270 | 2876c2d6 | Guido Trotter | command = [constants.XEN_CMD, "destroy", name]
|
271 | 65a6f9b7 | Michael Hanselmann | else:
|
272 | 2876c2d6 | Guido Trotter | command = [constants.XEN_CMD, "shutdown", name]
|
273 | 65a6f9b7 | Michael Hanselmann | result = utils.RunCmd(command) |
274 | 65a6f9b7 | Michael Hanselmann | |
275 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
276 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to stop instance %s: %s, %s" % |
277 | bbcf7ad0 | Iustin Pop | (name, result.fail_reason, result.output)) |
278 | 65a6f9b7 | Michael Hanselmann | |
279 | 65a6f9b7 | Michael Hanselmann | def RebootInstance(self, instance): |
280 | c41eea6e | Iustin Pop | """Reboot an instance.
|
281 | c41eea6e | Iustin Pop |
|
282 | c41eea6e | Iustin Pop | """
|
283 | 7dd106d3 | Iustin Pop | ini_info = self.GetInstanceInfo(instance.name)
|
284 | 65a6f9b7 | Michael Hanselmann | |
285 | e0561198 | Iustin Pop | if ini_info is None: |
286 | e0561198 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s," |
287 | e0561198 | Iustin Pop | " not running" % instance.name)
|
288 | e0561198 | Iustin Pop | |
289 | 2876c2d6 | Guido Trotter | result = utils.RunCmd([constants.XEN_CMD, "reboot", instance.name])
|
290 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
291 | 3213d3c8 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: %s, %s" % |
292 | 3213d3c8 | Iustin Pop | (instance.name, result.fail_reason, |
293 | 3213d3c8 | Iustin Pop | result.output)) |
294 | 06b78e8b | Michael Hanselmann | |
295 | 06b78e8b | Michael Hanselmann | def _CheckInstance(): |
296 | 7dd106d3 | Iustin Pop | new_info = self.GetInstanceInfo(instance.name)
|
297 | 06b78e8b | Michael Hanselmann | |
298 | 06b78e8b | Michael Hanselmann | # check if the domain ID has changed or the run time has decreased
|
299 | e0561198 | Iustin Pop | if (new_info is not None and |
300 | e0561198 | Iustin Pop | (new_info[1] != ini_info[1] or new_info[5] < ini_info[5])): |
301 | 06b78e8b | Michael Hanselmann | return
|
302 | 7dd106d3 | Iustin Pop | |
303 | 06b78e8b | Michael Hanselmann | raise utils.RetryAgain()
|
304 | 06b78e8b | Michael Hanselmann | |
305 | 06b78e8b | Michael Hanselmann | try:
|
306 | 06b78e8b | Michael Hanselmann | utils.Retry(_CheckInstance, self.REBOOT_RETRY_INTERVAL,
|
307 | 06b78e8b | Michael Hanselmann | self.REBOOT_RETRY_INTERVAL * self.REBOOT_RETRY_COUNT) |
308 | 06b78e8b | Michael Hanselmann | except utils.RetryTimeout:
|
309 | 7dd106d3 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s: instance" |
310 | 7dd106d3 | Iustin Pop | " did not reboot in the expected interval" %
|
311 | 7dd106d3 | Iustin Pop | (instance.name, )) |
312 | 65a6f9b7 | Michael Hanselmann | |
313 | 2c7a0373 | Guido Trotter | def BalloonInstanceMemory(self, instance, mem): |
314 | 2c7a0373 | Guido Trotter | """Balloon an instance memory to a certain value.
|
315 | 2c7a0373 | Guido Trotter |
|
316 | 2c7a0373 | Guido Trotter | @type instance: L{objects.Instance}
|
317 | 2c7a0373 | Guido Trotter | @param instance: instance to be accepted
|
318 | 2c7a0373 | Guido Trotter | @type mem: int
|
319 | 2c7a0373 | Guido Trotter | @param mem: actual memory size to use for instance runtime
|
320 | 2c7a0373 | Guido Trotter |
|
321 | 2c7a0373 | Guido Trotter | """
|
322 | 2c7a0373 | Guido Trotter | cmd = [constants.XEN_CMD, "mem-set", instance.name, mem]
|
323 | 2c7a0373 | Guido Trotter | result = utils.RunCmd(cmd) |
324 | 2c7a0373 | Guido Trotter | if result.failed:
|
325 | 2c7a0373 | Guido Trotter | raise errors.HypervisorError("Failed to balloon instance %s: %s (%s)" % |
326 | 2c7a0373 | Guido Trotter | (instance.name, result.fail_reason, |
327 | 2c7a0373 | Guido Trotter | result.output)) |
328 | 2c7a0373 | Guido Trotter | cmd = ["sed", "-ie", "s/^memory.*$/memory = %s/" % mem] |
329 | 2c7a0373 | Guido Trotter | cmd.append(XenHypervisor._ConfigFileName(instance.name)) |
330 | 2c7a0373 | Guido Trotter | result = utils.RunCmd(cmd) |
331 | 2c7a0373 | Guido Trotter | if result.failed:
|
332 | 2c7a0373 | Guido Trotter | raise errors.HypervisorError("Failed to update memory for %s: %s (%s)" % |
333 | 2c7a0373 | Guido Trotter | (instance.name, result.fail_reason, |
334 | 2c7a0373 | Guido Trotter | result.output)) |
335 | 2c7a0373 | Guido Trotter | |
336 | 65a6f9b7 | Michael Hanselmann | def GetNodeInfo(self): |
337 | 65a6f9b7 | Michael Hanselmann | """Return information about the node.
|
338 | 65a6f9b7 | Michael Hanselmann |
|
339 | 0105bad3 | Iustin Pop | @return: a dict with the following keys (memory values in MiB):
|
340 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
|
341 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
|
342 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
|
343 | 0105bad3 | Iustin Pop | - nr_cpus: total number of CPUs
|
344 | 0105bad3 | Iustin Pop | - nr_nodes: in a NUMA system, the number of domains
|
345 | 0105bad3 | Iustin Pop | - nr_sockets: the number of physical CPU sockets in the node
|
346 | 34fbc862 | Andrea Spadaccini | - hv_version: the hypervisor version in the form (major, minor)
|
347 | 65a6f9b7 | Michael Hanselmann |
|
348 | 65a6f9b7 | Michael Hanselmann | """
|
349 | 2876c2d6 | Guido Trotter | result = utils.RunCmd([constants.XEN_CMD, "info"])
|
350 | 65a6f9b7 | Michael Hanselmann | if result.failed:
|
351 | b48909c8 | Iustin Pop | logging.error("Can't run 'xm info' (%s): %s", result.fail_reason,
|
352 | b48909c8 | Iustin Pop | result.output) |
353 | 65a6f9b7 | Michael Hanselmann | return None |
354 | 65a6f9b7 | Michael Hanselmann | |
355 | 65a6f9b7 | Michael Hanselmann | xmoutput = result.stdout.splitlines() |
356 | 65a6f9b7 | Michael Hanselmann | result = {} |
357 | 0105bad3 | Iustin Pop | cores_per_socket = threads_per_core = nr_cpus = None
|
358 | 34fbc862 | Andrea Spadaccini | xen_major, xen_minor = None, None |
359 | 16ca6243 | Michael Hanselmann | memory_total = None
|
360 | 16ca6243 | Michael Hanselmann | memory_free = None
|
361 | 16ca6243 | Michael Hanselmann | |
362 | 65a6f9b7 | Michael Hanselmann | for line in xmoutput: |
363 | 65a6f9b7 | Michael Hanselmann | splitfields = line.split(":", 1) |
364 | 65a6f9b7 | Michael Hanselmann | |
365 | 65a6f9b7 | Michael Hanselmann | if len(splitfields) > 1: |
366 | 65a6f9b7 | Michael Hanselmann | key = splitfields[0].strip()
|
367 | 65a6f9b7 | Michael Hanselmann | val = splitfields[1].strip()
|
368 | 16ca6243 | Michael Hanselmann | |
369 | 16ca6243 | Michael Hanselmann | # note: in xen 3, memory has changed to total_memory
|
370 | d0c8c01d | Iustin Pop | if key == "memory" or key == "total_memory": |
371 | 16ca6243 | Michael Hanselmann | memory_total = int(val)
|
372 | d0c8c01d | Iustin Pop | elif key == "free_memory": |
373 | 16ca6243 | Michael Hanselmann | memory_free = int(val)
|
374 | d0c8c01d | Iustin Pop | elif key == "nr_cpus": |
375 | d0c8c01d | Iustin Pop | nr_cpus = result["cpu_total"] = int(val) |
376 | d0c8c01d | Iustin Pop | elif key == "nr_nodes": |
377 | d0c8c01d | Iustin Pop | result["cpu_nodes"] = int(val) |
378 | d0c8c01d | Iustin Pop | elif key == "cores_per_socket": |
379 | 0105bad3 | Iustin Pop | cores_per_socket = int(val)
|
380 | d0c8c01d | Iustin Pop | elif key == "threads_per_core": |
381 | 0105bad3 | Iustin Pop | threads_per_core = int(val)
|
382 | 34fbc862 | Andrea Spadaccini | elif key == "xen_major": |
383 | 34fbc862 | Andrea Spadaccini | xen_major = int(val)
|
384 | 34fbc862 | Andrea Spadaccini | elif key == "xen_minor": |
385 | 34fbc862 | Andrea Spadaccini | xen_minor = int(val)
|
386 | 0105bad3 | Iustin Pop | |
387 | 16ca6243 | Michael Hanselmann | if None not in [cores_per_socket, threads_per_core, nr_cpus]: |
388 | d0c8c01d | Iustin Pop | result["cpu_sockets"] = nr_cpus / (cores_per_socket * threads_per_core)
|
389 | 0105bad3 | Iustin Pop | |
390 | 16ca6243 | Michael Hanselmann | total_instmem = 0
|
391 | 16ca6243 | Michael Hanselmann | for (name, _, mem, vcpus, _, _) in self._GetXMList(True): |
392 | 16ca6243 | Michael Hanselmann | if name == _DOM0_NAME:
|
393 | 16ca6243 | Michael Hanselmann | result["memory_dom0"] = mem
|
394 | 16ca6243 | Michael Hanselmann | result["dom0_cpus"] = vcpus
|
395 | 16ca6243 | Michael Hanselmann | |
396 | 16ca6243 | Michael Hanselmann | # Include Dom0 in total memory usage
|
397 | 16ca6243 | Michael Hanselmann | total_instmem += mem |
398 | 16ca6243 | Michael Hanselmann | |
399 | 16ca6243 | Michael Hanselmann | if memory_free is not None: |
400 | 16ca6243 | Michael Hanselmann | result["memory_free"] = memory_free
|
401 | 16ca6243 | Michael Hanselmann | |
402 | 16ca6243 | Michael Hanselmann | if memory_total is not None: |
403 | 16ca6243 | Michael Hanselmann | result["memory_total"] = memory_total
|
404 | 16ca6243 | Michael Hanselmann | |
405 | 16ca6243 | Michael Hanselmann | # Calculate memory used by hypervisor
|
406 | 16ca6243 | Michael Hanselmann | if None not in [memory_total, memory_free, total_instmem]: |
407 | 16ca6243 | Michael Hanselmann | result["memory_hv"] = memory_total - memory_free - total_instmem
|
408 | 65a6f9b7 | Michael Hanselmann | |
409 | 34fbc862 | Andrea Spadaccini | if not (xen_major is None or xen_minor is None): |
410 | 34fbc862 | Andrea Spadaccini | result[constants.HV_NODEINFO_KEY_VERSION] = (xen_major, xen_minor) |
411 | 34fbc862 | Andrea Spadaccini | |
412 | 65a6f9b7 | Michael Hanselmann | return result
|
413 | 65a6f9b7 | Michael Hanselmann | |
414 | 637ce7f9 | Guido Trotter | @classmethod
|
415 | 55cc0a44 | Michael Hanselmann | def GetInstanceConsole(cls, instance, hvparams, beparams): |
416 | 65a6f9b7 | Michael Hanselmann | """Return a command for connecting to the console of an instance.
|
417 | 65a6f9b7 | Michael Hanselmann |
|
418 | 65a6f9b7 | Michael Hanselmann | """
|
419 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
420 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_SSH, |
421 | 55cc0a44 | Michael Hanselmann | host=instance.primary_node, |
422 | 55cc0a44 | Michael Hanselmann | user=constants.GANETI_RUNAS, |
423 | 61631293 | Stephen Shirley | command=[constants.XM_CONSOLE_WRAPPER, |
424 | 61631293 | Stephen Shirley | instance.name]) |
425 | 65a6f9b7 | Michael Hanselmann | |
426 | 65a6f9b7 | Michael Hanselmann | def Verify(self): |
427 | 65a6f9b7 | Michael Hanselmann | """Verify the hypervisor.
|
428 | 65a6f9b7 | Michael Hanselmann |
|
429 | 65a6f9b7 | Michael Hanselmann | For Xen, this verifies that the xend process is running.
|
430 | 65a6f9b7 | Michael Hanselmann |
|
431 | 65a6f9b7 | Michael Hanselmann | """
|
432 | 2876c2d6 | Guido Trotter | result = utils.RunCmd([constants.XEN_CMD, "info"])
|
433 | e3e66f02 | Michael Hanselmann | if result.failed:
|
434 | 3213d3c8 | Iustin Pop | return "'xm info' failed: %s, %s" % (result.fail_reason, result.output) |
435 | 65a6f9b7 | Michael Hanselmann | |
436 | 65a6f9b7 | Michael Hanselmann | @staticmethod
|
437 | 525011bc | Maciej Bliziński | def _GetConfigFileDiskData(block_devices, blockdev_prefix): |
438 | 65a6f9b7 | Michael Hanselmann | """Get disk directive for xen config file.
|
439 | 65a6f9b7 | Michael Hanselmann |
|
440 | 65a6f9b7 | Michael Hanselmann | This method builds the xen config disk directive according to the
|
441 | 65a6f9b7 | Michael Hanselmann | given disk_template and block_devices.
|
442 | 65a6f9b7 | Michael Hanselmann |
|
443 | c41eea6e | Iustin Pop | @param block_devices: list of tuples (cfdev, rldev):
|
444 | c41eea6e | Iustin Pop | - cfdev: dict containing ganeti config disk part
|
445 | c41eea6e | Iustin Pop | - rldev: ganeti.bdev.BlockDev object
|
446 | 525011bc | Maciej Bliziński | @param blockdev_prefix: a string containing blockdevice prefix,
|
447 | 525011bc | Maciej Bliziński | e.g. "sd" for /dev/sda
|
448 | 65a6f9b7 | Michael Hanselmann |
|
449 | c41eea6e | Iustin Pop | @return: string containing disk directive for xen instance config file
|
450 | 65a6f9b7 | Michael Hanselmann |
|
451 | 65a6f9b7 | Michael Hanselmann | """
|
452 | 65a6f9b7 | Michael Hanselmann | FILE_DRIVER_MAP = { |
453 | 65a6f9b7 | Michael Hanselmann | constants.FD_LOOP: "file",
|
454 | 65a6f9b7 | Michael Hanselmann | constants.FD_BLKTAP: "tap:aio",
|
455 | 65a6f9b7 | Michael Hanselmann | } |
456 | 65a6f9b7 | Michael Hanselmann | disk_data = [] |
457 | 2864f2d9 | Iustin Pop | if len(block_devices) > 24: |
458 | 2864f2d9 | Iustin Pop | # 'z' - 'a' = 24
|
459 | 2864f2d9 | Iustin Pop | raise errors.HypervisorError("Too many disks") |
460 | d0c8c01d | Iustin Pop | namespace = [blockdev_prefix + chr(i + ord("a")) for i in range(24)] |
461 | 069cfbf1 | Iustin Pop | for sd_name, (cfdev, dev_path) in zip(namespace, block_devices): |
462 | d34b16d7 | Iustin Pop | if cfdev.mode == constants.DISK_RDWR:
|
463 | d34b16d7 | Iustin Pop | mode = "w"
|
464 | d34b16d7 | Iustin Pop | else:
|
465 | d34b16d7 | Iustin Pop | mode = "r"
|
466 | 65a6f9b7 | Michael Hanselmann | if cfdev.dev_type == constants.LD_FILE:
|
467 | d34b16d7 | Iustin Pop | line = "'%s:%s,%s,%s'" % (FILE_DRIVER_MAP[cfdev.physical_id[0]], |
468 | d34b16d7 | Iustin Pop | dev_path, sd_name, mode) |
469 | 65a6f9b7 | Michael Hanselmann | else:
|
470 | d34b16d7 | Iustin Pop | line = "'phy:%s,%s,%s'" % (dev_path, sd_name, mode)
|
471 | 65a6f9b7 | Michael Hanselmann | disk_data.append(line) |
472 | 65a6f9b7 | Michael Hanselmann | |
473 | 65a6f9b7 | Michael Hanselmann | return disk_data
|
474 | 65a6f9b7 | Michael Hanselmann | |
475 | 4390ccff | Guido Trotter | def MigrationInfo(self, instance): |
476 | 4390ccff | Guido Trotter | """Get instance information to perform a migration.
|
477 | 4390ccff | Guido Trotter |
|
478 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
479 | 4390ccff | Guido Trotter | @param instance: instance to be migrated
|
480 | 4390ccff | Guido Trotter | @rtype: string
|
481 | 4390ccff | Guido Trotter | @return: content of the xen config file
|
482 | 4390ccff | Guido Trotter |
|
483 | 4390ccff | Guido Trotter | """
|
484 | 4390ccff | Guido Trotter | return self._ReadConfigFile(instance.name) |
485 | 4390ccff | Guido Trotter | |
486 | 4390ccff | Guido Trotter | def AcceptInstance(self, instance, info, target): |
487 | 4390ccff | Guido Trotter | """Prepare to accept an instance.
|
488 | 4390ccff | Guido Trotter |
|
489 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
490 | 4390ccff | Guido Trotter | @param instance: instance to be accepted
|
491 | 4390ccff | Guido Trotter | @type info: string
|
492 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
493 | 4390ccff | Guido Trotter | @type target: string
|
494 | 4390ccff | Guido Trotter | @param target: target host (usually ip), on this node
|
495 | 4390ccff | Guido Trotter |
|
496 | 4390ccff | Guido Trotter | """
|
497 | 4390ccff | Guido Trotter | pass
|
498 | 4390ccff | Guido Trotter | |
499 | 60af751d | Andrea Spadaccini | def FinalizeMigrationDst(self, instance, info, success): |
500 | 4390ccff | Guido Trotter | """Finalize an instance migration.
|
501 | 4390ccff | Guido Trotter |
|
502 | 4390ccff | Guido Trotter | After a successful migration we write the xen config file.
|
503 | 4390ccff | Guido Trotter | We do nothing on a failure, as we did not change anything at accept time.
|
504 | 4390ccff | Guido Trotter |
|
505 | 4390ccff | Guido Trotter | @type instance: L{objects.Instance}
|
506 | fea922fa | Guido Trotter | @param instance: instance whose migration is being finalized
|
507 | 4390ccff | Guido Trotter | @type info: string
|
508 | 4390ccff | Guido Trotter | @param info: content of the xen config file on the source node
|
509 | 4390ccff | Guido Trotter | @type success: boolean
|
510 | 4390ccff | Guido Trotter | @param success: whether the migration was a success or a failure
|
511 | 4390ccff | Guido Trotter |
|
512 | 4390ccff | Guido Trotter | """
|
513 | 4390ccff | Guido Trotter | if success:
|
514 | 4390ccff | Guido Trotter | self._WriteConfigFileStatic(instance.name, info)
|
515 | 4390ccff | Guido Trotter | |
516 | 6e7275c0 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
517 | 6e7275c0 | Iustin Pop | """Migrate an instance to a target node.
|
518 | 6e7275c0 | Iustin Pop |
|
519 | 6e7275c0 | Iustin Pop | The migration will not be attempted if the instance is not
|
520 | 6e7275c0 | Iustin Pop | currently running.
|
521 | 6e7275c0 | Iustin Pop |
|
522 | 58d38b02 | Iustin Pop | @type instance: L{objects.Instance}
|
523 | 58d38b02 | Iustin Pop | @param instance: the instance to be migrated
|
524 | fdf7f055 | Guido Trotter | @type target: string
|
525 | fdf7f055 | Guido Trotter | @param target: ip address of the target node
|
526 | fdf7f055 | Guido Trotter | @type live: boolean
|
527 | fdf7f055 | Guido Trotter | @param live: perform a live migration
|
528 | fdf7f055 | Guido Trotter |
|
529 | 6e7275c0 | Iustin Pop | """
|
530 | 58d38b02 | Iustin Pop | if self.GetInstanceInfo(instance.name) is None: |
531 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Instance not running, cannot migrate") |
532 | 50716be0 | Iustin Pop | |
533 | 641ae041 | Iustin Pop | port = instance.hvparams[constants.HV_MIGRATION_PORT] |
534 | 50716be0 | Iustin Pop | |
535 | a744b676 | Manuel Franceschini | if not netutils.TcpPing(target, port, live_port_needed=True): |
536 | 50716be0 | Iustin Pop | raise errors.HypervisorError("Remote host %s not listening on port" |
537 | 50716be0 | Iustin Pop | " %s, cannot migrate" % (target, port))
|
538 | 50716be0 | Iustin Pop | |
539 | 6555373d | Guido Trotter | # FIXME: migrate must be upgraded for transitioning to "xl" (xen 4.1).
|
540 | 0625d08f | René Nussbaumer | # This should be reworked in Ganeti 2.7
|
541 | 6555373d | Guido Trotter | # ssh must recognize the key of the target host for the migration
|
542 | 0625d08f | René Nussbaumer | args = [constants.XEN_CMD, "migrate"]
|
543 | 0625d08f | René Nussbaumer | if constants.XEN_CMD == constants.XEN_CMD_XM:
|
544 | 0625d08f | René Nussbaumer | args.extend(["-p", "%d" % port]) |
545 | 0625d08f | René Nussbaumer | if live:
|
546 | 0625d08f | René Nussbaumer | args.append("-l")
|
547 | 0625d08f | René Nussbaumer | elif constants.XEN_CMD == constants.XEN_CMD_XL:
|
548 | 0625d08f | René Nussbaumer | args.extend(["-C", self._ConfigFileName(instance.name)]) |
549 | 0625d08f | René Nussbaumer | else:
|
550 | 0625d08f | René Nussbaumer | raise errors.HypervisorError("Unsupported xen command: %s" % |
551 | 0625d08f | René Nussbaumer | constants.XEN_CMD) |
552 | 0625d08f | René Nussbaumer | |
553 | 58d38b02 | Iustin Pop | args.extend([instance.name, target]) |
554 | 6e7275c0 | Iustin Pop | result = utils.RunCmd(args) |
555 | 6e7275c0 | Iustin Pop | if result.failed:
|
556 | 6e7275c0 | Iustin Pop | raise errors.HypervisorError("Failed to migrate instance %s: %s" % |
557 | 58d38b02 | Iustin Pop | (instance.name, result.output)) |
558 | 60af751d | Andrea Spadaccini | |
559 | 60af751d | Andrea Spadaccini | def FinalizeMigrationSource(self, instance, success, live): |
560 | 60af751d | Andrea Spadaccini | """Finalize the instance migration on the source node.
|
561 | 60af751d | Andrea Spadaccini |
|
562 | 60af751d | Andrea Spadaccini | @type instance: L{objects.Instance}
|
563 | 60af751d | Andrea Spadaccini | @param instance: the instance that was migrated
|
564 | 60af751d | Andrea Spadaccini | @type success: bool
|
565 | 60af751d | Andrea Spadaccini | @param success: whether the migration succeeded or not
|
566 | 60af751d | Andrea Spadaccini | @type live: bool
|
567 | 60af751d | Andrea Spadaccini | @param live: whether the user requested a live migration or not
|
568 | 60af751d | Andrea Spadaccini |
|
569 | 60af751d | Andrea Spadaccini | """
|
570 | 60af751d | Andrea Spadaccini | # pylint: disable=W0613
|
571 | 60af751d | Andrea Spadaccini | if success:
|
572 | 60af751d | Andrea Spadaccini | # remove old xen file after migration succeeded
|
573 | 60af751d | Andrea Spadaccini | try:
|
574 | 60af751d | Andrea Spadaccini | self._RemoveConfigFile(instance.name)
|
575 | 60af751d | Andrea Spadaccini | except EnvironmentError: |
576 | 60af751d | Andrea Spadaccini | logging.exception("Failure while removing instance config file")
|
577 | 60af751d | Andrea Spadaccini | |
578 | 60af751d | Andrea Spadaccini | def GetMigrationStatus(self, instance): |
579 | 60af751d | Andrea Spadaccini | """Get the migration status
|
580 | 60af751d | Andrea Spadaccini |
|
581 | 60af751d | Andrea Spadaccini | As MigrateInstance for Xen is still blocking, if this method is called it
|
582 | 60af751d | Andrea Spadaccini | means that MigrateInstance has completed successfully. So we can safely
|
583 | 60af751d | Andrea Spadaccini | assume that the migration was successful and notify this fact to the client.
|
584 | 60af751d | Andrea Spadaccini |
|
585 | 60af751d | Andrea Spadaccini | @type instance: L{objects.Instance}
|
586 | 60af751d | Andrea Spadaccini | @param instance: the instance that is being migrated
|
587 | 60af751d | Andrea Spadaccini | @rtype: L{objects.MigrationStatus}
|
588 | 60af751d | Andrea Spadaccini | @return: the status of the current migration (one of
|
589 | 60af751d | Andrea Spadaccini | L{constants.HV_MIGRATION_VALID_STATUSES}), plus any additional
|
590 | 60af751d | Andrea Spadaccini | progress info that can be retrieved from the hypervisor
|
591 | 60af751d | Andrea Spadaccini |
|
592 | 60af751d | Andrea Spadaccini | """
|
593 | 60af751d | Andrea Spadaccini | return objects.MigrationStatus(status=constants.HV_MIGRATION_COMPLETED)
|
594 | 6e7275c0 | Iustin Pop | |
595 | f5118ade | Iustin Pop | @classmethod
|
596 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
597 | f5118ade | Iustin Pop | """Xen-specific powercycle.
|
598 | f5118ade | Iustin Pop |
|
599 | f5118ade | Iustin Pop | This first does a Linux reboot (which triggers automatically a Xen
|
600 | f5118ade | Iustin Pop | reboot), and if that fails it tries to do a Xen reboot. The reason
|
601 | f5118ade | Iustin Pop | we don't try a Xen reboot first is that the xen reboot launches an
|
602 | f5118ade | Iustin Pop | external command which connects to the Xen hypervisor, and that
|
603 | f5118ade | Iustin Pop | won't work in case the root filesystem is broken and/or the xend
|
604 | f5118ade | Iustin Pop | daemon is not working.
|
605 | f5118ade | Iustin Pop |
|
606 | f5118ade | Iustin Pop | """
|
607 | f5118ade | Iustin Pop | try:
|
608 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |
609 | f5118ade | Iustin Pop | finally:
|
610 | 2876c2d6 | Guido Trotter | utils.RunCmd([constants.XEN_CMD, "debug", "R"]) |
611 | f5118ade | Iustin Pop | |
612 | 65a6f9b7 | Michael Hanselmann | |
613 | 65a6f9b7 | Michael Hanselmann | class XenPvmHypervisor(XenHypervisor): |
614 | 65a6f9b7 | Michael Hanselmann | """Xen PVM hypervisor interface"""
|
615 | 65a6f9b7 | Michael Hanselmann | |
616 | 205ab586 | Iustin Pop | PARAMETERS = { |
617 | 2f2dbb4b | Jun Futagawa | constants.HV_USE_BOOTLOADER: hv_base.NO_CHECK, |
618 | 2f2dbb4b | Jun Futagawa | constants.HV_BOOTLOADER_PATH: hv_base.OPT_FILE_CHECK, |
619 | 2f2dbb4b | Jun Futagawa | constants.HV_BOOTLOADER_ARGS: hv_base.NO_CHECK, |
620 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
621 | 205ab586 | Iustin Pop | constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
622 | 7adf7814 | René Nussbaumer | constants.HV_ROOT_PATH: hv_base.NO_CHECK, |
623 | 205ab586 | Iustin Pop | constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
624 | e2d14329 | Andrea Spadaccini | constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
625 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
626 | 525011bc | Maciej Bliziński | # TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
627 | 525011bc | Maciej Bliziński | constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
628 | 990ade2d | Stephen Shirley | constants.HV_REBOOT_BEHAVIOR: |
629 | c4708267 | Tsachy Shacham | hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
630 | c4708267 | Tsachy Shacham | constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
631 | 205ab586 | Iustin Pop | } |
632 | f48148c3 | Iustin Pop | |
633 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
634 | 61eb1a46 | Guido Trotter | def _WriteConfigFile(cls, instance, startup_memory, block_devices): |
635 | 65a6f9b7 | Michael Hanselmann | """Write the Xen config file for the instance.
|
636 | 65a6f9b7 | Michael Hanselmann |
|
637 | 65a6f9b7 | Michael Hanselmann | """
|
638 | a985b417 | Iustin Pop | hvp = instance.hvparams |
639 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
640 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
641 | 65a6f9b7 | Michael Hanselmann | |
642 | 2f2dbb4b | Jun Futagawa | # if bootloader is True, use bootloader instead of kernel and ramdisk
|
643 | 2f2dbb4b | Jun Futagawa | # parameters.
|
644 | 2f2dbb4b | Jun Futagawa | if hvp[constants.HV_USE_BOOTLOADER]:
|
645 | 2f2dbb4b | Jun Futagawa | # bootloader handling
|
646 | 2f2dbb4b | Jun Futagawa | bootloader_path = hvp[constants.HV_BOOTLOADER_PATH] |
647 | 2f2dbb4b | Jun Futagawa | if bootloader_path:
|
648 | 2f2dbb4b | Jun Futagawa | config.write("bootloader = '%s'\n" % bootloader_path)
|
649 | 2f2dbb4b | Jun Futagawa | else:
|
650 | 2f2dbb4b | Jun Futagawa | raise errors.HypervisorError("Bootloader enabled, but missing" |
651 | 2f2dbb4b | Jun Futagawa | " bootloader path")
|
652 | 65a6f9b7 | Michael Hanselmann | |
653 | 2f2dbb4b | Jun Futagawa | bootloader_args = hvp[constants.HV_BOOTLOADER_ARGS] |
654 | 2f2dbb4b | Jun Futagawa | if bootloader_args:
|
655 | 2f2dbb4b | Jun Futagawa | config.write("bootargs = '%s'\n" % bootloader_args)
|
656 | 2f2dbb4b | Jun Futagawa | else:
|
657 | 2f2dbb4b | Jun Futagawa | # kernel handling
|
658 | 2f2dbb4b | Jun Futagawa | kpath = hvp[constants.HV_KERNEL_PATH] |
659 | 2f2dbb4b | Jun Futagawa | config.write("kernel = '%s'\n" % kpath)
|
660 | 2f2dbb4b | Jun Futagawa | |
661 | 2f2dbb4b | Jun Futagawa | # initrd handling
|
662 | 2f2dbb4b | Jun Futagawa | initrd_path = hvp[constants.HV_INITRD_PATH] |
663 | 2f2dbb4b | Jun Futagawa | if initrd_path:
|
664 | 2f2dbb4b | Jun Futagawa | config.write("ramdisk = '%s'\n" % initrd_path)
|
665 | 65a6f9b7 | Michael Hanselmann | |
666 | 65a6f9b7 | Michael Hanselmann | # rest of the settings
|
667 | 61eb1a46 | Guido Trotter | config.write("memory = %d\n" % startup_memory)
|
668 | 80121c83 | Guido Trotter | config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
669 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
670 | c4708267 | Tsachy Shacham | cpu_pinning = cls._CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
671 | c4708267 | Tsachy Shacham | if cpu_pinning:
|
672 | c4708267 | Tsachy Shacham | config.write("%s\n" % cpu_pinning)
|
673 | c4708267 | Tsachy Shacham | |
674 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
675 | 65a6f9b7 | Michael Hanselmann | |
676 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
677 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
678 | 503b97a9 | Guido Trotter | nic_str = "mac=%s" % (nic.mac)
|
679 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
680 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
681 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
682 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
683 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
684 | 0183a697 | Alessandro Cincaglini | vif_data.append("'%s'" % nic_str)
|
685 | 65a6f9b7 | Michael Hanselmann | |
686 | 525011bc | Maciej Bliziński | disk_data = cls._GetConfigFileDiskData(block_devices, |
687 | 525011bc | Maciej Bliziński | hvp[constants.HV_BLOCKDEV_PREFIX]) |
688 | 7ed85ffe | Iustin Pop | |
689 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
690 | 7ed85ffe | Iustin Pop | config.write("disk = [%s]\n" % ",".join(disk_data)) |
691 | 074ca009 | Guido Trotter | |
692 | 7adf7814 | René Nussbaumer | if hvp[constants.HV_ROOT_PATH]:
|
693 | 7adf7814 | René Nussbaumer | config.write("root = '%s'\n" % hvp[constants.HV_ROOT_PATH])
|
694 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
695 | 990ade2d | Stephen Shirley | if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
696 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'restart'\n")
|
697 | 990ade2d | Stephen Shirley | else:
|
698 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'destroy'\n")
|
699 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
700 | 07813a9e | Iustin Pop | config.write("extra = '%s'\n" % hvp[constants.HV_KERNEL_ARGS])
|
701 | 1a63f285 | Iustin Pop | cls._WriteConfigFileStatic(instance.name, config.getvalue()) |
702 | 73cd67f4 | Guido Trotter | |
703 | 65a6f9b7 | Michael Hanselmann | return True |
704 | 65a6f9b7 | Michael Hanselmann | |
705 | 65a6f9b7 | Michael Hanselmann | |
706 | 65a6f9b7 | Michael Hanselmann | class XenHvmHypervisor(XenHypervisor): |
707 | 65a6f9b7 | Michael Hanselmann | """Xen HVM hypervisor interface"""
|
708 | 65a6f9b7 | Michael Hanselmann | |
709 | 69b99987 | Michael Hanselmann | ANCILLARY_FILES = XenHypervisor.ANCILLARY_FILES + [ |
710 | 69b99987 | Michael Hanselmann | constants.VNC_PASSWORD_FILE, |
711 | 69b99987 | Michael Hanselmann | ] |
712 | 69ab2e12 | Guido Trotter | ANCILLARY_FILES_OPT = XenHypervisor.ANCILLARY_FILES_OPT + [ |
713 | 69ab2e12 | Guido Trotter | constants.VNC_PASSWORD_FILE, |
714 | 69ab2e12 | Guido Trotter | ] |
715 | 3680f662 | Guido Trotter | |
716 | 205ab586 | Iustin Pop | PARAMETERS = { |
717 | 205ab586 | Iustin Pop | constants.HV_ACPI: hv_base.NO_CHECK, |
718 | 016d04b3 | Michael Hanselmann | constants.HV_BOOT_ORDER: (True, ) +
|
719 | 016d04b3 | Michael Hanselmann | (lambda x: x and len(x.strip("acdn")) == 0, |
720 | 016d04b3 | Michael Hanselmann | "Invalid boot order specified, must be one or more of [acdn]",
|
721 | 016d04b3 | Michael Hanselmann | None, None), |
722 | 205ab586 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
723 | 016d04b3 | Michael Hanselmann | constants.HV_DISK_TYPE: |
724 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_DISK_TYPES),
|
725 | 016d04b3 | Michael Hanselmann | constants.HV_NIC_TYPE: |
726 | 016d04b3 | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_HVM_VALID_NIC_TYPES),
|
727 | 205ab586 | Iustin Pop | constants.HV_PAE: hv_base.NO_CHECK, |
728 | 016d04b3 | Michael Hanselmann | constants.HV_VNC_BIND_ADDRESS: |
729 | 8b312c1d | Manuel Franceschini | (False, netutils.IP4Address.IsValid,
|
730 | 016d04b3 | Michael Hanselmann | "VNC bind address is not a valid IP address", None, None), |
731 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK, |
732 | 205ab586 | Iustin Pop | constants.HV_DEVICE_MODEL: hv_base.REQ_FILE_CHECK, |
733 | 6e6bb8d5 | Guido Trotter | constants.HV_VNC_PASSWORD_FILE: hv_base.REQ_FILE_CHECK, |
734 | e2d14329 | Andrea Spadaccini | constants.HV_MIGRATION_PORT: hv_base.REQ_NET_PORT_CHECK, |
735 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
736 | 6b970cef | Jun Futagawa | constants.HV_USE_LOCALTIME: hv_base.NO_CHECK, |
737 | e695efbf | Iustin Pop | # TODO: Add a check for the blockdev prefix (matching [a-z:] or similar).
|
738 | e695efbf | Iustin Pop | constants.HV_BLOCKDEV_PREFIX: hv_base.NO_CHECK, |
739 | 990ade2d | Stephen Shirley | constants.HV_REBOOT_BEHAVIOR: |
740 | c4708267 | Tsachy Shacham | hv_base.ParamInSet(True, constants.REBOOT_BEHAVIORS),
|
741 | c4708267 | Tsachy Shacham | constants.HV_CPU_MASK: hv_base.OPT_MULTI_CPU_MASK_CHECK, |
742 | 205ab586 | Iustin Pop | } |
743 | 09ea8710 | Iustin Pop | |
744 | 65a6f9b7 | Michael Hanselmann | @classmethod
|
745 | 61eb1a46 | Guido Trotter | def _WriteConfigFile(cls, instance, startup_memory, block_devices): |
746 | 65a6f9b7 | Michael Hanselmann | """Create a Xen 3.1 HVM config file.
|
747 | 65a6f9b7 | Michael Hanselmann |
|
748 | 65a6f9b7 | Michael Hanselmann | """
|
749 | a985b417 | Iustin Pop | hvp = instance.hvparams |
750 | a985b417 | Iustin Pop | |
751 | 65a6f9b7 | Michael Hanselmann | config = StringIO() |
752 | 65a6f9b7 | Michael Hanselmann | config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
|
753 | e2ee1cea | Iustin Pop | |
754 | e2ee1cea | Iustin Pop | # kernel handling
|
755 | e2ee1cea | Iustin Pop | kpath = hvp[constants.HV_KERNEL_PATH] |
756 | e2ee1cea | Iustin Pop | config.write("kernel = '%s'\n" % kpath)
|
757 | e2ee1cea | Iustin Pop | |
758 | 65a6f9b7 | Michael Hanselmann | config.write("builder = 'hvm'\n")
|
759 | 61eb1a46 | Guido Trotter | config.write("memory = %d\n" % startup_memory)
|
760 | 80121c83 | Guido Trotter | config.write("maxmem = %d\n" % instance.beparams[constants.BE_MAXMEM])
|
761 | 8b3fd458 | Iustin Pop | config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
|
762 | c4708267 | Tsachy Shacham | cpu_pinning = cls._CreateConfigCpus(hvp[constants.HV_CPU_MASK]) |
763 | c4708267 | Tsachy Shacham | if cpu_pinning:
|
764 | c4708267 | Tsachy Shacham | config.write("%s\n" % cpu_pinning)
|
765 | c4708267 | Tsachy Shacham | |
766 | 65a6f9b7 | Michael Hanselmann | config.write("name = '%s'\n" % instance.name)
|
767 | 09ea8710 | Iustin Pop | if hvp[constants.HV_PAE]:
|
768 | a21dda8b | Iustin Pop | config.write("pae = 1\n")
|
769 | a21dda8b | Iustin Pop | else:
|
770 | a21dda8b | Iustin Pop | config.write("pae = 0\n")
|
771 | 09ea8710 | Iustin Pop | if hvp[constants.HV_ACPI]:
|
772 | a21dda8b | Iustin Pop | config.write("acpi = 1\n")
|
773 | a21dda8b | Iustin Pop | else:
|
774 | a21dda8b | Iustin Pop | config.write("acpi = 0\n")
|
775 | 65a6f9b7 | Michael Hanselmann | config.write("apic = 1\n")
|
776 | 09ea8710 | Iustin Pop | config.write("device_model = '%s'\n" % hvp[constants.HV_DEVICE_MODEL])
|
777 | a985b417 | Iustin Pop | config.write("boot = '%s'\n" % hvp[constants.HV_BOOT_ORDER])
|
778 | 65a6f9b7 | Michael Hanselmann | config.write("sdl = 0\n")
|
779 | 97efde45 | Guido Trotter | config.write("usb = 1\n")
|
780 | 97efde45 | Guido Trotter | config.write("usbdevice = 'tablet'\n")
|
781 | 65a6f9b7 | Michael Hanselmann | config.write("vnc = 1\n")
|
782 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_BIND_ADDRESS] is None: |
783 | d0c11cf7 | Alexander Schreiber | config.write("vnclisten = '%s'\n" % constants.VNC_DEFAULT_BIND_ADDRESS)
|
784 | d0c11cf7 | Alexander Schreiber | else:
|
785 | 6b405598 | Guido Trotter | config.write("vnclisten = '%s'\n" % hvp[constants.HV_VNC_BIND_ADDRESS])
|
786 | 65a6f9b7 | Michael Hanselmann | |
787 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
788 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
789 | 65a6f9b7 | Michael Hanselmann | config.write("vncdisplay = %s\n" % display)
|
790 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 0\n")
|
791 | 65a6f9b7 | Michael Hanselmann | else:
|
792 | 65a6f9b7 | Michael Hanselmann | config.write("# vncdisplay = 1\n")
|
793 | 65a6f9b7 | Michael Hanselmann | config.write("vncunused = 1\n")
|
794 | 65a6f9b7 | Michael Hanselmann | |
795 | 6e6bb8d5 | Guido Trotter | vnc_pwd_file = hvp[constants.HV_VNC_PASSWORD_FILE] |
796 | 65a6f9b7 | Michael Hanselmann | try:
|
797 | 6e6bb8d5 | Guido Trotter | password = utils.ReadFile(vnc_pwd_file) |
798 | 78f66a17 | Guido Trotter | except EnvironmentError, err: |
799 | 78f66a17 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" % |
800 | 6e6bb8d5 | Guido Trotter | (vnc_pwd_file, err)) |
801 | 65a6f9b7 | Michael Hanselmann | |
802 | 65a6f9b7 | Michael Hanselmann | config.write("vncpasswd = '%s'\n" % password.rstrip())
|
803 | 65a6f9b7 | Michael Hanselmann | |
804 | 65a6f9b7 | Michael Hanselmann | config.write("serial = 'pty'\n")
|
805 | 6b970cef | Jun Futagawa | if hvp[constants.HV_USE_LOCALTIME]:
|
806 | 6b970cef | Jun Futagawa | config.write("localtime = 1\n")
|
807 | 65a6f9b7 | Michael Hanselmann | |
808 | 65a6f9b7 | Michael Hanselmann | vif_data = [] |
809 | a985b417 | Iustin Pop | nic_type = hvp[constants.HV_NIC_TYPE] |
810 | f48148c3 | Iustin Pop | if nic_type is None: |
811 | f48148c3 | Iustin Pop | # ensure old instances don't change
|
812 | f48148c3 | Iustin Pop | nic_type_str = ", type=ioemu"
|
813 | d08f6067 | Guido Trotter | elif nic_type == constants.HT_NIC_PARAVIRTUAL:
|
814 | f48148c3 | Iustin Pop | nic_type_str = ", type=paravirtualized"
|
815 | f48148c3 | Iustin Pop | else:
|
816 | f48148c3 | Iustin Pop | nic_type_str = ", model=%s, type=ioemu" % nic_type
|
817 | 65a6f9b7 | Michael Hanselmann | for nic in instance.nics: |
818 | 503b97a9 | Guido Trotter | nic_str = "mac=%s%s" % (nic.mac, nic_type_str)
|
819 | 65a6f9b7 | Michael Hanselmann | ip = getattr(nic, "ip", None) |
820 | 65a6f9b7 | Michael Hanselmann | if ip is not None: |
821 | 65a6f9b7 | Michael Hanselmann | nic_str += ", ip=%s" % ip
|
822 | 503b97a9 | Guido Trotter | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
823 | 503b97a9 | Guido Trotter | nic_str += ", bridge=%s" % nic.nicparams[constants.NIC_LINK]
|
824 | 0183a697 | Alessandro Cincaglini | vif_data.append("'%s'" % nic_str)
|
825 | 65a6f9b7 | Michael Hanselmann | |
826 | 65a6f9b7 | Michael Hanselmann | config.write("vif = [%s]\n" % ",".join(vif_data)) |
827 | 525011bc | Maciej Bliziński | |
828 | 525011bc | Maciej Bliziński | disk_data = cls._GetConfigFileDiskData(block_devices, |
829 | 525011bc | Maciej Bliziński | hvp[constants.HV_BLOCKDEV_PREFIX]) |
830 | 525011bc | Maciej Bliziński | |
831 | a985b417 | Iustin Pop | iso_path = hvp[constants.HV_CDROM_IMAGE_PATH] |
832 | f48148c3 | Iustin Pop | if iso_path:
|
833 | f48148c3 | Iustin Pop | iso = "'file:%s,hdc:cdrom,r'" % iso_path
|
834 | a21dda8b | Iustin Pop | disk_data.append(iso) |
835 | a21dda8b | Iustin Pop | |
836 | a21dda8b | Iustin Pop | config.write("disk = [%s]\n" % (",".join(disk_data))) |
837 | a21dda8b | Iustin Pop | |
838 | 65a6f9b7 | Michael Hanselmann | config.write("on_poweroff = 'destroy'\n")
|
839 | 990ade2d | Stephen Shirley | if hvp[constants.HV_REBOOT_BEHAVIOR] == constants.INSTANCE_REBOOT_ALLOWED:
|
840 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'restart'\n")
|
841 | 990ade2d | Stephen Shirley | else:
|
842 | 990ade2d | Stephen Shirley | config.write("on_reboot = 'destroy'\n")
|
843 | 65a6f9b7 | Michael Hanselmann | config.write("on_crash = 'restart'\n")
|
844 | 1a63f285 | Iustin Pop | cls._WriteConfigFileStatic(instance.name, config.getvalue()) |
845 | 73cd67f4 | Guido Trotter | |
846 | 65a6f9b7 | Michael Hanselmann | return True |