Revision 398fd4f6 lib/hypervisor/hv_xen.py
| b/lib/hypervisor/hv_xen.py | ||
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| 339 | 339 |
|
| 340 | 340 |
self._cmd = _cmd |
| 341 | 341 |
|
| 342 |
def _GetCommand(self, hvparams=None):
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|
| 342 |
def _GetCommand(self, hvparams): |
|
| 343 | 343 |
"""Returns Xen command to use. |
| 344 | 344 |
|
| 345 | 345 |
@type hvparams: dict of strings |
| ... | ... | |
| 347 | 347 |
|
| 348 | 348 |
""" |
| 349 | 349 |
if self._cmd is None: |
| 350 |
if hvparams is not None:
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|
| 351 |
cmd = hvparams[constants.HV_XEN_CMD]
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|
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if hvparams is None or constants.HV_XEN_CMD not in hvparams:
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raise errors.HypervisorError("Cannot determine xen command.")
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| 352 | 352 |
else: |
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# TODO: Remove autoconf option once retrieving the command from |
|
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# the hvparams is fully implemented. |
|
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cmd = constants.XEN_CMD |
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cmd = hvparams[constants.HV_XEN_CMD] |
|
| 356 | 354 |
else: |
| 357 | 355 |
cmd = self._cmd |
| 358 | 356 |
|
| ... | ... | |
| 361 | 359 |
|
| 362 | 360 |
return cmd |
| 363 | 361 |
|
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def _RunXen(self, args, hvparams=None):
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def _RunXen(self, args, hvparams): |
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| 365 | 363 |
"""Wrapper around L{utils.process.RunCmd} to run Xen command.
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| 366 | 364 |
|
| 367 | 365 |
@type hvparams: dict of strings |
| ... | ... | |
| 369 | 367 |
@see: L{utils.process.RunCmd}
|
| 370 | 368 |
|
| 371 | 369 |
""" |
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cmd = [self._GetCommand(hvparams=hvparams)]
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cmd = [self._GetCommand(hvparams)] |
|
| 373 | 371 |
cmd.extend(args) |
| 374 | 372 |
|
| 375 | 373 |
return self._run_cmd_fn(cmd) |
| ... | ... | |
| 438 | 436 |
utils.RenameFile(old_filename, new_filename) |
| 439 | 437 |
return new_filename |
| 440 | 438 |
|
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def _GetInstanceList(self, include_node, hvparams=None):
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|
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def _GetInstanceList(self, include_node, hvparams): |
|
| 442 | 440 |
"""Wrapper around module level L{_GetInstanceList}.
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| 443 | 441 |
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@type hvparams: dict of strings |
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@param hvparams: hypervisor parameters to be used on this node |
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| 444 | 445 |
""" |
| 445 |
return _GetInstanceList(lambda: self._RunXen(["list"], hvparams=hvparams),
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|
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return _GetInstanceList(lambda: self._RunXen(["list"], hvparams), |
|
| 446 | 447 |
include_node) |
| 447 | 448 |
|
| 448 | 449 |
def ListInstances(self, hvparams=None): |
| 449 | 450 |
"""Get the list of running instances. |
| 450 | 451 |
|
| 451 | 452 |
""" |
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instance_list = self._GetInstanceList(False, hvparams=hvparams)
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instance_list = self._GetInstanceList(False, hvparams) |
|
| 453 | 454 |
names = [info[0] for info in instance_list] |
| 454 | 455 |
return names |
| 455 | 456 |
|
| ... | ... | |
| 464 | 465 |
@return: tuple (name, id, memory, vcpus, stat, times) |
| 465 | 466 |
|
| 466 | 467 |
""" |
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instance_list = self._GetInstanceList(instance_name == _DOM0_NAME, |
|
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hvparams=hvparams) |
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instance_list = self._GetInstanceList(instance_name == _DOM0_NAME, hvparams) |
|
| 469 | 469 |
result = None |
| 470 | 470 |
for data in instance_list: |
| 471 | 471 |
if data[0] == instance_name: |
| ... | ... | |
| 481 | 481 |
@return: list of tuples (name, id, memory, vcpus, stat, times) |
| 482 | 482 |
|
| 483 | 483 |
""" |
| 484 |
return self._GetInstanceList(False, hvparams=hvparams)
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return self._GetInstanceList(False, hvparams) |
|
| 485 | 485 |
|
| 486 | 486 |
def _MakeConfigFile(self, instance, startup_memory, block_devices): |
| 487 | 487 |
"""Gather configuration details and write to disk. |
| ... | ... | |
| 511 | 511 |
cmd.append("-p")
|
| 512 | 512 |
cmd.append(self._ConfigFileName(instance.name)) |
| 513 | 513 |
|
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result = self._RunXen(cmd, hvparams=instance.hvparams)
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result = self._RunXen(cmd, instance.hvparams) |
|
| 515 | 515 |
if result.failed: |
| 516 | 516 |
# Move the Xen configuration file to the log directory to avoid |
| 517 | 517 |
# leaving a stale config file behind. |
| ... | ... | |
| 546 | 546 |
else: |
| 547 | 547 |
action = "shutdown" |
| 548 | 548 |
|
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result = self._RunXen([action, name], hvparams=hvparams)
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result = self._RunXen([action, name], hvparams) |
|
| 550 | 550 |
if result.failed: |
| 551 | 551 |
raise errors.HypervisorError("Failed to stop instance %s: %s, %s" %
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| 552 | 552 |
(name, result.fail_reason, result.output)) |
| ... | ... | |
| 564 | 564 |
raise errors.HypervisorError("Failed to reboot instance %s,"
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| 565 | 565 |
" not running" % instance.name) |
| 566 | 566 |
|
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result = self._RunXen(["reboot", instance.name], hvparams=instance.hvparams)
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result = self._RunXen(["reboot", instance.name], instance.hvparams) |
|
| 568 | 568 |
if result.failed: |
| 569 | 569 |
raise errors.HypervisorError("Failed to reboot instance %s: %s, %s" %
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| 570 | 570 |
(instance.name, result.fail_reason, |
| ... | ... | |
| 597 | 597 |
@param mem: actual memory size to use for instance runtime |
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|
| 599 | 599 |
""" |
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result = self._RunXen(["mem-set", instance.name, mem], |
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hvparams=instance.hvparams) |
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result = self._RunXen(["mem-set", instance.name, mem], instance.hvparams) |
|
| 602 | 601 |
if result.failed: |
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raise errors.HypervisorError("Failed to balloon instance %s: %s (%s)" %
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(instance.name, result.fail_reason, |
| ... | ... | |
| 620 | 619 |
@see: L{_GetNodeInfo} and L{_ParseNodeInfo}
|
| 621 | 620 |
|
| 622 | 621 |
""" |
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result = self._RunXen(["info"], hvparams=hvparams)
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result = self._RunXen(["info"], hvparams) |
|
| 624 | 623 |
if result.failed: |
| 625 | 624 |
logging.error("Can't retrieve xen hypervisor information (%s): %s",
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| 626 | 625 |
result.fail_reason, result.output) |
| 627 | 626 |
return None |
| 628 | 627 |
|
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instance_list = self._GetInstanceList(True, hvparams=hvparams)
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instance_list = self._GetInstanceList(True, hvparams) |
|
| 630 | 629 |
return _GetNodeInfo(result.stdout, instance_list) |
| 631 | 630 |
|
| 632 | 631 |
@classmethod |
| ... | ... | |
| 664 | 663 |
return "The configured xen toolstack '%s' is not available on this" \ |
| 665 | 664 |
" node." % xen_cmd |
| 666 | 665 |
|
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result = self._RunXen(["info"], hvparams=hvparams)
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result = self._RunXen(["info"], hvparams) |
|
| 668 | 667 |
if result.failed: |
| 669 | 668 |
return "Retrieving information from xen failed: %s, %s" % \ |
| 670 | 669 |
(result.fail_reason, result.output) |
| ... | ... | |
| 747 | 746 |
if self.GetInstanceInfo(instance_name, hvparams=hvparams) is None: |
| 748 | 747 |
raise errors.HypervisorError("Instance not running, cannot migrate")
|
| 749 | 748 |
|
| 750 |
cmd = self._GetCommand(hvparams=hvparams)
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| 749 |
cmd = self._GetCommand(hvparams) |
|
| 751 | 750 |
|
| 752 | 751 |
if (cmd == constants.XEN_CMD_XM and |
| 753 | 752 |
not _ping_fn(target, port, live_port_needed=True)): |
| ... | ... | |
| 772 | 771 |
|
| 773 | 772 |
args.extend([instance_name, target]) |
| 774 | 773 |
|
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result = self._RunXen(args, hvparams=hvparams)
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result = self._RunXen(args, hvparams) |
|
| 776 | 775 |
if result.failed: |
| 777 | 776 |
raise errors.HypervisorError("Failed to migrate instance %s: %s" %
|
| 778 | 777 |
(instance_name, result.output)) |
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