all the functionality that is identical for both.
"""
+ REBOOT_RETRY_COUNT = 60
+ REBOOT_RETRY_INTERVAL = 10
+
+ ANCILLARY_FILES = [
+ '/etc/xen/xend-config.sxp',
+ '/etc/xen/scripts/vif-bridge',
+ ]
@classmethod
- def _WriteConfigFile(cls, instance, block_devices, extra_args):
+ def _WriteConfigFile(cls, instance, block_devices):
"""Write the Xen config file for the instance.
"""
if result.failed:
raise errors.HypervisorError("xm list failed, retries"
" exceeded (%s): %s" %
- (result.fail_reason, result.stderr))
+ (result.fail_reason, result.output))
# skip over the heading
lines = result.stdout.splitlines()[1:]
xm_list = self._GetXMList(False)
return xm_list
- def StartInstance(self, instance, block_devices, extra_args):
+ def StartInstance(self, instance, block_devices):
"""Start an instance.
"""
- self._WriteConfigFile(instance, block_devices, extra_args)
+ self._WriteConfigFile(instance, block_devices)
result = utils.RunCmd(["xm", "create", instance.name])
if result.failed:
result = utils.RunCmd(command)
if result.failed:
- raise errors.HypervisorError("Failed to stop instance %s: %s" %
- (instance.name, result.fail_reason))
+ raise errors.HypervisorError("Failed to stop instance %s: %s, %s" %
+ (instance.name, result.fail_reason,
+ result.output))
def RebootInstance(self, instance):
"""Reboot an instance.
"""
+ ini_info = self.GetInstanceInfo(instance.name)
result = utils.RunCmd(["xm", "reboot", instance.name])
if result.failed:
- raise errors.HypervisorError("Failed to reboot instance %s: %s" %
- (instance.name, result.fail_reason))
+ raise errors.HypervisorError("Failed to reboot instance %s: %s, %s" %
+ (instance.name, result.fail_reason,
+ result.output))
+ done = False
+ retries = self.REBOOT_RETRY_COUNT
+ while retries > 0:
+ new_info = self.GetInstanceInfo(instance.name)
+ # check if the domain ID has changed or the run time has
+ # decreased
+ if new_info[1] != ini_info[1] or new_info[5] < ini_info[5]:
+ done = True
+ break
+ time.sleep(self.REBOOT_RETRY_INTERVAL)
+ retries -= 1
+
+ if not done:
+ raise errors.HypervisorError("Failed to reboot instance %s: instance"
+ " did not reboot in the expected interval" %
+ (instance.name, ))
def GetNodeInfo(self):
"""Return information about the node.
- @return: a dict with the following keys (values in MiB):
+ @return: a dict with the following keys (memory values in MiB):
- memory_total: the total memory size on the node
- memory_free: the available memory on the node for instances
- memory_dom0: the memory used by the node itself, if available
+ - nr_cpus: total number of CPUs
+ - nr_nodes: in a NUMA system, the number of domains
+ - nr_sockets: the number of physical CPU sockets in the node
"""
# note: in xen 3, memory has changed to total_memory
xmoutput = result.stdout.splitlines()
result = {}
+ cores_per_socket = threads_per_core = nr_cpus = None
for line in xmoutput:
splitfields = line.split(":", 1)
elif key == 'free_memory':
result['memory_free'] = int(val)
elif key == 'nr_cpus':
- result['cpu_total'] = int(val)
+ nr_cpus = result['cpu_total'] = int(val)
+ elif key == 'nr_nodes':
+ result['cpu_nodes'] = int(val)
+ elif key == 'cores_per_socket':
+ cores_per_socket = int(val)
+ elif key == 'threads_per_core':
+ threads_per_core = int(val)
+
+ if (cores_per_socket is not None and
+ threads_per_core is not None and nr_cpus is not None):
+ result['cpu_sockets'] = nr_cpus / (cores_per_socket * threads_per_core)
+
dom0_info = self.GetInstanceInfo("Domain-0")
if dom0_info is not None:
result['memory_dom0'] = dom0_info[2]
return result
@classmethod
- def GetShellCommandForConsole(cls, instance):
+ def GetShellCommandForConsole(cls, instance, hvparams, beparams):
"""Return a command for connecting to the console of an instance.
"""
"""
result = utils.RunCmd(["xm", "info"])
if result.failed:
- return "'xm info' failed: %s" % result.fail_reason
+ return "'xm info' failed: %s, %s" % (result.fail_reason, result.output)
@staticmethod
def _GetConfigFileDiskData(disk_template, block_devices):
# directly export their info (currently HVM will just sed this info)
namespace = ["sd" + chr(i + ord('a')) for i in range(24)]
for sd_name, (cfdev, dev_path) in zip(namespace, block_devices):
+ if cfdev.mode == constants.DISK_RDWR:
+ mode = "w"
+ else:
+ mode = "r"
if cfdev.dev_type == constants.LD_FILE:
- line = "'%s:%s,%s,w'" % (FILE_DRIVER_MAP[cfdev.physical_id[0]],
- dev_path, sd_name)
+ line = "'%s:%s,%s,%s'" % (FILE_DRIVER_MAP[cfdev.physical_id[0]],
+ dev_path, sd_name, mode)
else:
- line = "'phy:%s,%s,w'" % (dev_path, sd_name)
+ line = "'phy:%s,%s,%s'" % (dev_path, sd_name, mode)
disk_data.append(line)
return disk_data
except EnvironmentError:
logging.exception("Failure while removing instance config file")
-
-class XenPvmHypervisor(XenHypervisor):
- """Xen PVM hypervisor interface"""
-
- PARAMETERS = [
- constants.HV_KERNEL_PATH,
- constants.HV_INITRD_PATH,
- constants.HV_ROOT_PATH,
- ]
-
@classmethod
- def CheckParameterSyntax(cls, hvparams):
- """Check the given parameters for validity.
-
- For the PVM hypervisor, this only check the existence of the
- kernel.
+ def PowercycleNode(cls):
+ """Xen-specific powercycle.
- @type hvparams: dict
- @param hvparams: dictionary with parameter names/value
- @raise errors.HypervisorError: when a parameter is not valid
+ This first does a Linux reboot (which triggers automatically a Xen
+ reboot), and if that fails it tries to do a Xen reboot. The reason
+ we don't try a Xen reboot first is that the xen reboot launches an
+ external command which connects to the Xen hypervisor, and that
+ won't work in case the root filesystem is broken and/or the xend
+ daemon is not working.
"""
- super(XenPvmHypervisor, cls).CheckParameterSyntax(hvparams)
-
- if not hvparams[constants.HV_KERNEL_PATH]:
- raise errors.HypervisorError("Need a kernel for the instance")
-
- if not os.path.isabs(hvparams[constants.HV_KERNEL_PATH]):
- raise errors.HypervisorError("The kernel path must be an absolute path")
-
- if not hvparams[constants.HV_ROOT_PATH]:
- raise errors.HypervisorError("Need a root partition for the instance")
-
- if hvparams[constants.HV_INITRD_PATH]:
- if not os.path.isabs(hvparams[constants.HV_INITRD_PATH]):
- raise errors.HypervisorError("The initrd path must be an absolute path"
- ", if defined")
-
- def ValidateParameters(self, hvparams):
- """Check the given parameters for validity.
+ try:
+ cls.LinuxPowercycle()
+ finally:
+ utils.RunCmd(["xm", "debug", "R"])
- For the PVM hypervisor, this only check the existence of the
- kernel.
- """
- super(XenPvmHypervisor, self).ValidateParameters(hvparams)
+class XenPvmHypervisor(XenHypervisor):
+ """Xen PVM hypervisor interface"""
- kernel_path = hvparams[constants.HV_KERNEL_PATH]
- if not os.path.isfile(kernel_path):
- raise errors.HypervisorError("Instance kernel '%s' not found or"
- " not a file" % kernel_path)
- initrd_path = hvparams[constants.HV_INITRD_PATH]
- if initrd_path and not os.path.isfile(initrd_path):
- raise errors.HypervisorError("Instance initrd '%s' not found or"
- " not a file" % initrd_path)
+ PARAMETERS = {
+ constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK,
+ constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK,
+ constants.HV_ROOT_PATH: hv_base.REQUIRED_CHECK,
+ constants.HV_KERNEL_ARGS: hv_base.NO_CHECK,
+ }
@classmethod
- def _WriteConfigFile(cls, instance, block_devices, extra_args):
+ def _WriteConfigFile(cls, instance, block_devices):
"""Write the Xen config file for the instance.
"""
+ hvp = instance.hvparams
config = StringIO()
config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
# kernel handling
- kpath = instance.hvparams[constants.HV_KERNEL_PATH]
+ kpath = hvp[constants.HV_KERNEL_PATH]
config.write("kernel = '%s'\n" % kpath)
# initrd handling
- initrd_path = instance.hvparams[constants.HV_INITRD_PATH]
+ initrd_path = hvp[constants.HV_INITRD_PATH]
if initrd_path:
config.write("ramdisk = '%s'\n" % initrd_path)
cls._GetConfigFileDiskData(instance.disk_template,
block_devices)))
- rpath = instance.hvparams[constants.HV_ROOT_PATH]
- config.write("root = '%s ro'\n" % rpath)
+ config.write("root = '%s'\n" % hvp[constants.HV_ROOT_PATH])
config.write("on_poweroff = 'destroy'\n")
config.write("on_reboot = 'restart'\n")
config.write("on_crash = 'restart'\n")
- if extra_args:
- config.write("extra = '%s'\n" % extra_args)
+ config.write("extra = '%s'\n" % hvp[constants.HV_KERNEL_ARGS])
# just in case it exists
utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
try:
- utils.WriteFile("/etc/xen/%s" % instance.name,
- data=config.getvalue())
+ utils.WriteFile("/etc/xen/%s" % instance.name, data=config.getvalue())
except EnvironmentError, err:
raise errors.HypervisorError("Cannot write Xen instance confile"
" file /etc/xen/%s: %s" %
class XenHvmHypervisor(XenHypervisor):
"""Xen HVM hypervisor interface"""
- PARAMETERS = [
- constants.HV_ACPI,
- constants.HV_BOOT_ORDER,
- constants.HV_CDROM_IMAGE_PATH,
- constants.HV_DISK_TYPE,
- constants.HV_NIC_TYPE,
- constants.HV_PAE,
- constants.HV_VNC_BIND_ADDRESS,
- ]
+ ANCILLARY_FILES = XenHypervisor.ANCILLARY_FILES + \
+ [constants.VNC_PASSWORD_FILE]
+
+ PARAMETERS = {
+ constants.HV_ACPI: hv_base.NO_CHECK,
+ constants.HV_BOOT_ORDER: (True, ) + \
+ (lambda x: x and len(x.strip("acdn")) == 0,
+ "Invalid boot order specified, must be one or more of [acdn]",
+ None, None),
+ constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK,
+ constants.HV_DISK_TYPE: \
+ hv_base.ParamInSet(True, constants.HT_HVM_VALID_DISK_TYPES),
+ constants.HV_NIC_TYPE: \
+ hv_base.ParamInSet(True, constants.HT_HVM_VALID_NIC_TYPES),
+ constants.HV_PAE: hv_base.NO_CHECK,
+ constants.HV_VNC_BIND_ADDRESS: \
+ (False, utils.IsValidIP,
+ "VNC bind address is not a valid IP address", None, None),
+ constants.HV_KERNEL_PATH: hv_base.REQ_FILE_CHECK,
+ constants.HV_DEVICE_MODEL: hv_base.REQ_FILE_CHECK,
+ }
@classmethod
- def CheckParameterSyntax(cls, hvparams):
- """Check the given parameter syntax.
-
- """
- super(XenHvmHypervisor, cls).CheckParameterSyntax(hvparams)
- # boot order verification
- boot_order = hvparams[constants.HV_BOOT_ORDER]
- if len(boot_order.strip("acdn")) != 0:
- raise errors.HypervisorError("Invalid boot order '%s' specified,"
- " must be one or more of [acdn]" %
- boot_order)
- # device type checks
- nic_type = hvparams[constants.HV_NIC_TYPE]
- if nic_type not in constants.HT_HVM_VALID_NIC_TYPES:
- raise errors.HypervisorError("Invalid NIC type %s specified for Xen HVM"
- " hypervisor" % nic_type)
- disk_type = hvparams[constants.HV_DISK_TYPE]
- if disk_type not in constants.HT_HVM_VALID_DISK_TYPES:
- raise errors.HypervisorError("Invalid disk type %s specified for Xen HVM"
- " hypervisor" % disk_type)
- # vnc_bind_address verification
- vnc_bind_address = hvparams[constants.HV_VNC_BIND_ADDRESS]
- if vnc_bind_address is not None:
- if not utils.IsValidIP(vnc_bind_address):
- raise errors.OpPrereqError("given VNC bind address '%s' doesn't look"
- " like a valid IP address" %
- vnc_bind_address)
-
- iso_path = hvparams[constants.HV_CDROM_IMAGE_PATH]
- if iso_path and not os.path.isabs(iso_path):
- raise errors.HypervisorError("The path to the HVM CDROM image must"
- " be an absolute path or None, not %s" %
- iso_path)
-
- def ValidateParameters(self, hvparams):
- """Check the given parameters for validity.
-
- For the PVM hypervisor, this only check the existence of the
- kernel.
-
- @type hvparams: dict
- @param hvparams: dictionary with parameter names/value
- @raise errors.HypervisorError: when a parameter is not valid
-
- """
- super(XenHvmHypervisor, self).ValidateParameters(hvparams)
-
- # hvm_cdrom_image_path verification
- iso_path = hvparams[constants.HV_CDROM_IMAGE_PATH]
- if iso_path and not os.path.isfile(iso_path):
- raise errors.HypervisorError("The HVM CDROM image must either be a"
- " regular file or a symlink pointing to"
- " an existing regular file, not %s" %
- iso_path)
-
- @classmethod
- def _WriteConfigFile(cls, instance, block_devices, extra_args):
+ def _WriteConfigFile(cls, instance, block_devices):
"""Create a Xen 3.1 HVM config file.
"""
+ hvp = instance.hvparams
+
config = StringIO()
config.write("# this is autogenerated by Ganeti, please do not edit\n#\n")
- config.write("kernel = '/usr/lib/xen/boot/hvmloader'\n")
+
+ # kernel handling
+ kpath = hvp[constants.HV_KERNEL_PATH]
+ config.write("kernel = '%s'\n" % kpath)
+
config.write("builder = 'hvm'\n")
config.write("memory = %d\n" % instance.beparams[constants.BE_MEMORY])
config.write("vcpus = %d\n" % instance.beparams[constants.BE_VCPUS])
config.write("name = '%s'\n" % instance.name)
- if instance.hvparams[constants.HV_PAE]:
+ if hvp[constants.HV_PAE]:
config.write("pae = 1\n")
else:
config.write("pae = 0\n")
- if instance.hvparams[constants.HV_ACPI]:
+ if hvp[constants.HV_ACPI]:
config.write("acpi = 1\n")
else:
config.write("acpi = 0\n")
config.write("apic = 1\n")
- arch = os.uname()[4]
- if '64' in arch:
- config.write("device_model = '/usr/lib64/xen/bin/qemu-dm'\n")
- else:
- config.write("device_model = '/usr/lib/xen/bin/qemu-dm'\n")
- if instance.hvparams[constants.HV_BOOT_ORDER] is None:
- config.write("boot = '%s'\n" % constants.HT_HVM_DEFAULT_BOOT_ORDER)
- else:
- config.write("boot = '%s'\n" % instance.hvparams["boot_order"])
+ config.write("device_model = '%s'\n" % hvp[constants.HV_DEVICE_MODEL])
+ config.write("boot = '%s'\n" % hvp[constants.HV_BOOT_ORDER])
config.write("sdl = 0\n")
config.write("usb = 1\n")
config.write("usbdevice = 'tablet'\n")
config.write("vnc = 1\n")
- if instance.hvparams[constants.HV_VNC_BIND_ADDRESS] is None:
+ if hvp[constants.HV_VNC_BIND_ADDRESS] is None:
config.write("vnclisten = '%s'\n" % constants.VNC_DEFAULT_BIND_ADDRESS)
else:
- config.write("vnclisten = '%s'\n" %
- instance.hvparams["vnc_bind_address"])
+ config.write("vnclisten = '%s'\n" % hvp[constants.HV_VNC_BIND_ADDRESS])
- if instance.network_port > constants.HT_HVM_VNC_BASE_PORT:
- display = instance.network_port - constants.HT_HVM_VNC_BASE_PORT
+ if instance.network_port > constants.VNC_BASE_PORT:
+ display = instance.network_port - constants.VNC_BASE_PORT
config.write("vncdisplay = %s\n" % display)
config.write("vncunused = 0\n")
else:
config.write("localtime = 1\n")
vif_data = []
- nic_type = instance.hvparams[constants.HV_NIC_TYPE]
+ nic_type = hvp[constants.HV_NIC_TYPE]
if nic_type is None:
# ensure old instances don't change
nic_type_str = ", type=ioemu"
- elif nic_type == constants.HT_HVM_DEV_PARAVIRTUAL:
+ elif nic_type == constants.HT_NIC_PARAVIRTUAL:
nic_type_str = ", type=paravirtualized"
else:
nic_type_str = ", model=%s, type=ioemu" % nic_type
config.write("vif = [%s]\n" % ",".join(vif_data))
disk_data = cls._GetConfigFileDiskData(instance.disk_template,
block_devices)
- disk_type = instance.hvparams[constants.HV_DISK_TYPE]
- if disk_type in (None, constants.HT_HVM_DEV_IOEMU):
+ disk_type = hvp[constants.HV_DISK_TYPE]
+ if disk_type in (None, constants.HT_DISK_IOEMU):
replacement = ",ioemu:hd"
else:
replacement = ",hd"
disk_data = [line.replace(",sd", replacement) for line in disk_data]
- iso_path = instance.hvparams[constants.HV_CDROM_IMAGE_PATH]
+ iso_path = hvp[constants.HV_CDROM_IMAGE_PATH]
if iso_path:
iso = "'file:%s,hdc:cdrom,r'" % iso_path
disk_data.append(iso)
config.write("on_poweroff = 'destroy'\n")
config.write("on_reboot = 'restart'\n")
config.write("on_crash = 'restart'\n")
- if extra_args:
- config.write("extra = '%s'\n" % extra_args)
# just in case it exists
utils.RemoveFile("/etc/xen/auto/%s" % instance.name)
try:
projects / ganeti-local / blobdiff