"""
-import simplejson
import ConfigParser
import re
from cStringIO import StringIO
"OS", "Node", "Cluster"]
-# Check whether the simplejson module supports indentation
-_JSON_INDENT = 2
-try:
- simplejson.dumps(1, indent=_JSON_INDENT)
-except TypeError:
- _JSON_INDENT = None
-
-
class ConfigObject(object):
"""A generic config object.
if name in self.__slots__:
setattr(self, name, state[name])
- def Dump(self, fobj):
- """Dump to a file object.
-
- """
- data = self.ToDict()
- if _JSON_INDENT is None:
- simplejson.dump(data, fobj)
- else:
- simplejson.dump(data, fobj, indent=_JSON_INDENT)
-
- @classmethod
- def Load(cls, fobj):
- """Load data from the given stream.
-
- """
- return cls.FromDict(simplejson.load(fobj))
-
- def Dumps(self):
- """Dump and return the string representation."""
- buf = StringIO()
- self.Dump(buf)
- return buf.getvalue()
-
- @classmethod
- def Loads(cls, data):
- """Load data from a string."""
- return cls.Load(StringIO(data))
-
def ToDict(self):
"""Convert to a dict holding only standard python types.
def CreateOnSecondary(self):
"""Test if this device needs to be created on a secondary node."""
- return self.dev_type in (constants.LD_DRBD7, constants.LD_DRBD8,
- constants.LD_LV)
+ return self.dev_type in (constants.LD_DRBD8, constants.LD_LV)
def AssembleOnSecondary(self):
"""Test if this device needs to be assembled on a secondary node."""
- return self.dev_type in (constants.LD_DRBD7, constants.LD_DRBD8,
- constants.LD_LV)
+ return self.dev_type in (constants.LD_DRBD8, constants.LD_LV)
def OpenOnSecondary(self):
"""Test if this device needs to be opened on a secondary node."""
return self.dev_type in (constants.LD_LV,)
+ def StaticDevPath(self):
+ """Return the device path if this device type has a static one.
+
+ Some devices (LVM for example) live always at the same /dev/ path,
+ irrespective of their status. For such devices, we return this
+ path, for others we return None.
+
+ """
+ if self.dev_type == constants.LD_LV:
+ return "/dev/%s/%s" % (self.logical_id[0], self.logical_id[1])
+ return None
+
+ def ChildrenNeeded(self):
+ """Compute the needed number of children for activation.
+
+ This method will return either -1 (all children) or a positive
+ number denoting the minimum number of children needed for
+ activation (only mirrored devices will usually return >=0).
+
+ Currently, only DRBD8 supports diskless activation (therefore we
+ return 0), for all other we keep the previous semantics and return
+ -1.
+
+ """
+ if self.dev_type == constants.LD_DRBD8:
+ return 0
+ return -1
+
def GetNodes(self, node):
"""This function returns the nodes this device lives on.
devices needs to (or can) be assembled.
"""
- if self.dev_type == constants.LD_LV or self.dev_type == constants.LD_MD_R1:
+ if self.dev_type in [constants.LD_LV, constants.LD_FILE]:
result = [node]
elif self.dev_type in constants.LDS_DRBD:
result = [self.logical_id[0], self.logical_id[1]]
This method, given the node on which the parent disk lives, will
return the list of all (node, disk) pairs which describe the disk
- tree in the most compact way. For example, a md/drbd/lvm stack
- will be returned as (primary_node, md) and (secondary_node, drbd)
- which represents all the top-level devices on the nodes. This
- means that on the primary node we need to activate the the md (and
- recursively all its children) and on the secondary node we need to
- activate the drbd device (and its children, the two lvm volumes).
+ tree in the most compact way. For example, a drbd/lvm stack
+ will be returned as (primary_node, drbd) and (secondary_node, drbd)
+ which represents all the top-level devices on the nodes.
"""
my_nodes = self.GetNodes(parent_node)
# be different)
return result
+ def RecordGrow(self, amount):
+ """Update the size of this disk after growth.
+
+ This method recurses over the disks's children and updates their
+ size correspondigly. The method needs to be kept in sync with the
+ actual algorithms from bdev.
+
+ """
+ if self.dev_type == constants.LD_LV:
+ self.size += amount
+ elif self.dev_type == constants.LD_DRBD8:
+ if self.children:
+ self.children[0].RecordGrow(amount)
+ self.size += amount
+ else:
+ raise errors.ProgrammerError("Disk.RecordGrow called for unsupported"
+ " disk type %s" % self.dev_type)
+
+ def SetPhysicalID(self, target_node, nodes_ip):
+ """Convert the logical ID to the physical ID.
+
+ This is used only for drbd, which needs ip/port configuration.
+
+ The routine descends down and updates its children also, because
+ this helps when the only the top device is passed to the remote
+ node.
+
+ Arguments:
+ - target_node: the node we wish to configure for
+ - nodes_ip: a mapping of node name to ip
+
+ The target_node must exist in in nodes_ip, and must be one of the
+ nodes in the logical ID for each of the DRBD devices encountered
+ in the disk tree.
+
+ """
+ if self.children:
+ for child in self.children:
+ child.SetPhysicalID(target_node, nodes_ip)
+
+ if self.logical_id is None and self.physical_id is not None:
+ return
+ if self.dev_type in constants.LDS_DRBD:
+ pnode, snode, port = self.logical_id
+ if target_node not in (pnode, snode):
+ raise errors.ConfigurationError("DRBD device not knowing node %s" %
+ target_node)
+ pnode_ip = nodes_ip.get(pnode, None)
+ snode_ip = nodes_ip.get(snode, None)
+ if pnode_ip is None or snode_ip is None:
+ raise errors.ConfigurationError("Can't find primary or secondary node"
+ " for %s" % str(self))
+ if pnode == target_node:
+ self.physical_id = (pnode_ip, port,
+ snode_ip, port)
+ else: # it must be secondary, we tested above
+ self.physical_id = (snode_ip, port,
+ pnode_ip, port)
+ else:
+ self.physical_id = self.logical_id
+ return
+
def ToDict(self):
"""Disk-specific conversion to standard python types.
if self.dev_type == constants.LD_LV:
val = "<LogicalVolume(/dev/%s/%s" % self.logical_id
elif self.dev_type in constants.LDS_DRBD:
- if self.dev_type == constants.LD_DRBD7:
- val = "<DRBD7("
- else:
- val = "<DRBD8("
+ val = "<DRBD8("
if self.physical_id is None:
phy = "unconfigured"
else:
val += "backend=%s, metadev=%s" % (self.children[0], self.children[1])
else:
val += "no local storage"
- elif self.dev_type == constants.LD_MD_R1:
- val = "<MD_R1(uuid=%s, children=%s" % (self.physical_id, self.children)
else:
val = ("<Disk(type=%s, logical_id=%s, physical_id=%s, children=%s" %
(self.dev_type, self.logical_id, self.physical_id, self.children))
"nics",
"disks",
"disk_template",
+ "network_port",
+ "kernel_path",
+ "initrd_path",
+ "hvm_boot_order",
+ "hvm_acpi",
+ "hvm_pae",
+ "hvm_cdrom_image_path",
+ "vnc_bind_address",
]
def _ComputeSecondaryNodes(self):
__bool__ = __nonzero__
+
class Node(TaggableObject):
"""Config object representing a node."""
__slots__ = TaggableObject.__slots__ + [
class Cluster(TaggableObject):
"""Config object representing the cluster."""
__slots__ = TaggableObject.__slots__ + [
- "config_version",
"serial_no",
"rsahostkeypub",
"highest_used_port",
projects / ganeti-local / blobdiff