Source Code for Module ganeti.constants

  1  # 
  2  # 
  3   
  4  # Copyright (C) 2006, 2007 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  """Module holding different constants.""" 
 23   
 24  import re 
 25   
 26  from ganeti import _autoconf 
 27   
 28  # various versions 
 29  PROTOCOL_VERSION = 20 
 30  RELEASE_VERSION = _autoconf.PACKAGE_VERSION 
 31  OS_API_VERSION = 10 
 32  EXPORT_VERSION = 0 
 33  RAPI_VERSION = 2 
 34   
 35   
 36  # Format for CONFIG_VERSION: 
 37  #   01 03 0123 = 01030123 
 38  #   ^^ ^^ ^^^^ 
 39  #   |  |  + Configuration version/revision 
 40  #   |  + Minor version 
 41  #   + Major version 
 42  # 
 43  # It stored as an integer. Make sure not to write an octal number. 
 44   
 45  # BuildVersion and SplitVersion must be in here because we can't import other 
 46  # modules. The cfgupgrade tool must be able to read and write version numbers 
 47  # and thus requires these functions. To avoid code duplication, they're kept in 
 48  # here. 
 49   
 50 -def BuildVersion(major, minor, revision): 
 51    """Calculates int version number from major, minor and revision numbers. 
 52   
 53    Returns: int representing version number 
 54   
 55    """ 
 56    assert isinstance(major, int) 
 57    assert isinstance(minor, int) 
 58    assert isinstance(revision, int) 
 59    return (1000000 * major + 
 60              10000 * minor + 
 61                  1 * revision) 
 62   
 63   
 64 -def SplitVersion(version): 
 65    """Splits version number stored in an int. 
 66   
 67    Returns: tuple; (major, minor, revision) 
 68   
 69    """ 
 70    assert isinstance(version, int) 
 71   
 72    (major, remainder) = divmod(version, 1000000) 
 73    (minor, revision) = divmod(remainder, 10000) 
 74   
 75    return (major, minor, revision) 
 76   
 77   
 78  CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR) 
 79  CONFIG_MINOR = int(_autoconf.VERSION_MINOR) 
 80  CONFIG_REVISION = 0 
 81  CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION) 
 82   
 83  # file paths 
 84  DATA_DIR = _autoconf.LOCALSTATEDIR + "/lib/ganeti" 
 85  RUN_DIR = _autoconf.LOCALSTATEDIR + "/run" 
 86  RUN_GANETI_DIR = RUN_DIR + "/ganeti" 
 87  BDEV_CACHE_DIR = RUN_GANETI_DIR + "/bdev-cache" 
 88  DISK_LINKS_DIR = RUN_GANETI_DIR + "/instance-disks" 
 89  RUN_DIRS_MODE = 0755 
 90  SOCKET_DIR = RUN_GANETI_DIR + "/socket" 
 91  SOCKET_DIR_MODE = 0700 
 92  # keep RUN_GANETI_DIR first here, to make sure all get created when the node 
 93  # daemon is started (this takes care of RUN_DIR being tmpfs) 
 94  SUB_RUN_DIRS = [ RUN_GANETI_DIR, BDEV_CACHE_DIR, DISK_LINKS_DIR ] 
 95  LOCK_DIR = _autoconf.LOCALSTATEDIR + "/lock" 
 96  SSCONF_LOCK_FILE = LOCK_DIR + "/ganeti-ssconf.lock" 
 97  CLUSTER_CONF_FILE = DATA_DIR + "/config.data" 
 98  SSL_CERT_FILE = DATA_DIR + "/server.pem" 
 99  RAPI_CERT_FILE = DATA_DIR + "/rapi.pem" 
100  WATCHER_STATEFILE = DATA_DIR + "/watcher.data" 
101  INSTANCE_UPFILE = RUN_GANETI_DIR + "/instance-status" 
102  SSH_KNOWN_HOSTS_FILE = DATA_DIR + "/known_hosts" 
103  RAPI_USERS_FILE = DATA_DIR + "/rapi_users" 
104  QUEUE_DIR = DATA_DIR + "/queue" 
105  ETC_HOSTS = "/etc/hosts" 
106  DEFAULT_FILE_STORAGE_DIR = _autoconf.FILE_STORAGE_DIR 
107   
108  MASTER_SOCKET = SOCKET_DIR + "/ganeti-master" 
109   
110  # PID files 
111  MASTERD_PID = "ganeti-masterd" 
112  NODED_PID = "ganeti-noded" 
113  RAPI_PID = "ganeti-rapi" 
114   
115  NODE_INITD_SCRIPT = _autoconf.SYSCONFDIR + "/init.d/ganeti" 
116  DEFAULT_NODED_PORT = 1811 
117  FIRST_DRBD_PORT = 11000 
118  LAST_DRBD_PORT = 14999 
119  MASTER_SCRIPT = "ganeti-master" 
120   
121  LOG_DIR = _autoconf.LOCALSTATEDIR + "/log/ganeti/" 
122  LOG_OS_DIR = LOG_DIR + "os" 
123  LOG_NODESERVER = LOG_DIR + "node-daemon.log" 
124  LOG_WATCHER = LOG_DIR + "watcher.log" 
125  LOG_MASTERDAEMON = LOG_DIR + "master-daemon.log" 
126  LOG_RAPISERVER = LOG_DIR + "rapi-daemon.log" 
127  LOG_COMMANDS = LOG_DIR + "commands.log" 
128  LOG_BURNIN = LOG_DIR + "burnin.log" 
129   
130  OS_SEARCH_PATH = _autoconf.OS_SEARCH_PATH 
131  EXPORT_DIR = _autoconf.EXPORT_DIR 
132   
133  EXPORT_CONF_FILE = "config.ini" 
134   
135  XEN_KERNEL = _autoconf.XEN_KERNEL 
136  XEN_INITRD = _autoconf.XEN_INITRD 
137   
138  KVM_PATH = _autoconf.KVM_PATH 
139  SOCAT_PATH = _autoconf.SOCAT_PATH 
140  KVM_MIGRATION_PORT = _autoconf.KVM_MIGRATION_PORT 
141   
142  VALUE_DEFAULT = "default" 
143  VALUE_AUTO = "auto" 
144  VALUE_GENERATE = "generate" 
145  VALUE_NONE = "none" 
146  VALUE_TRUE = "true" 
147  VALUE_FALSE = "false" 
148   
149  # External script validation mask 
150  EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$") 
151   
152  # hooks-related constants 
153  HOOKS_BASE_DIR = _autoconf.SYSCONFDIR + "/ganeti/hooks" 
154  HOOKS_PHASE_PRE = "pre" 
155  HOOKS_PHASE_POST = "post" 
156  HOOKS_NAME_CFGUPDATE = "config-update" 
157  HOOKS_VERSION = 2 
158   
159  # hooks subject type (what object type does the LU deal with) 
160  HTYPE_CLUSTER = "CLUSTER" 
161  HTYPE_NODE = "NODE" 
162  HTYPE_INSTANCE = "INSTANCE" 
163   
164  HKR_SKIP = 0 
165  HKR_FAIL = 1 
166  HKR_SUCCESS = 2 
167   
168  # disk template types 
169  DT_DISKLESS = "diskless" 
170  DT_PLAIN = "plain" 
171  DT_DRBD8 = "drbd" 
172  DT_FILE = "file" 
173   
174  # the set of network-mirrored disk templates 
175  DTS_NET_MIRROR = frozenset([DT_DRBD8]) 
176   
177  # the set of non-lvm-based disk templates 
178  DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE]) 
179   
180  # logical disk types 
181  LD_LV = "lvm" 
182  LD_DRBD8 = "drbd8" 
183  LD_FILE = "file" 
184  LDS_BLOCK = frozenset([LD_LV, LD_DRBD8]) 
185   
186  # drbd constants 
187  DRBD_HMAC_ALG = "md5" 
188  DRBD_NET_PROTOCOL = "C" 
189   
190  # file backend driver 
191  FD_LOOP = "loop" 
192  FD_BLKTAP = "blktap" 
193   
194  # the set of drbd-like disk types 
195  LDS_DRBD = frozenset([LD_DRBD8]) 
196   
197  # disk access mode 
198  DISK_RDONLY = "ro" 
199  DISK_RDWR = "rw" 
200  DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR]) 
201   
202  # disk replacement mode 
203  REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary 
204  REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary 
205  REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node 
206   
207  # lock recalculate mode 
208  LOCKS_REPLACE = 'replace' 
209  LOCKS_APPEND = 'append' 
210   
211  # instance creation modes 
212  INSTANCE_CREATE = "create" 
213  INSTANCE_IMPORT = "import" 
214   
215  DISK_TEMPLATES = frozenset([DT_DISKLESS, DT_PLAIN, 
216                              DT_DRBD8, DT_FILE]) 
217   
218  FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP]) 
219   
220  # import/export config options 
221  INISECT_EXP = "export" 
222  INISECT_INS = "instance" 
223   
224  # dynamic device modification 
225   
226  DDM_ADD = 'add' 
227  DDM_REMOVE = 'remove' 
228   
229  # common exit codes 
230  EXIT_SUCCESS = 0 
231  EXIT_FAILURE = 1 
232  EXIT_NOTCLUSTER = 5 
233  EXIT_NOTMASTER = 11 
234  EXIT_NODESETUP_ERROR = 12 
235  EXIT_CONFIRMATION = 13 # need user confirmation 
236   
237  # tags 
238  TAG_CLUSTER = "cluster" 
239  TAG_NODE = "node" 
240  TAG_INSTANCE = "instance" 
241  MAX_TAG_LEN = 128 
242  MAX_TAGS_PER_OBJ = 4096 
243   
244  # others 
245  DEFAULT_BRIDGE = "xen-br0" 
246  SYNC_SPEED = 60 * 1024 
247  LOCALHOST_IP_ADDRESS = "127.0.0.1" 
248  TCP_PING_TIMEOUT = 10 
249  GANETI_RUNAS = "root" 
250  DEFAULT_VG = "xenvg" 
251  BIND_ADDRESS_GLOBAL = "0.0.0.0" 
252  MIN_VG_SIZE = 20480 
253  DEFAULT_MAC_PREFIX = "aa:00:00" 
254  LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT 
255   
256  # RPC constants 
257  (RPC_ENCODING_NONE, 
258   RPC_ENCODING_ZLIB_BASE64) = range(2) 
259   
260  # os related constants 
261  OS_VALID_STATUS = "VALID" 
262  OS_SCRIPT_CREATE = 'create' 
263  OS_SCRIPT_IMPORT = 'import' 
264  OS_SCRIPT_EXPORT = 'export' 
265  OS_SCRIPT_RENAME = 'rename' 
266  OS_SCRIPTS = frozenset([OS_SCRIPT_CREATE, OS_SCRIPT_IMPORT, 
267                          OS_SCRIPT_EXPORT, OS_SCRIPT_RENAME]) 
268   
269  # ssh constants 
270  SSH_INITD_SCRIPT = _autoconf.SSH_INITD_SCRIPT 
271  SSH_CONFIG_DIR = "/etc/ssh/" 
272  SSH_HOST_DSA_PRIV = SSH_CONFIG_DIR + "ssh_host_dsa_key" 
273  SSH_HOST_DSA_PUB = SSH_HOST_DSA_PRIV + ".pub" 
274  SSH_HOST_RSA_PRIV = SSH_CONFIG_DIR + "ssh_host_rsa_key" 
275  SSH_HOST_RSA_PUB = SSH_HOST_RSA_PRIV + ".pub" 
276  SSH = "ssh" 
277  SCP = "scp" 
278   
279  # reboot types 
280  INSTANCE_REBOOT_SOFT = "soft" 
281  INSTANCE_REBOOT_HARD = "hard" 
282  INSTANCE_REBOOT_FULL = "full" 
283   
284  REBOOT_TYPES = frozenset([INSTANCE_REBOOT_SOFT, 
285                            INSTANCE_REBOOT_HARD, 
286                            INSTANCE_REBOOT_FULL]) 
287   
288  VTYPE_STRING = 'string' 
289  VTYPE_BOOL = 'bool' 
290  VTYPE_SIZE = 'size' # size, in MiBs 
291  VTYPE_INT = 'int' 
292  ENFORCEABLE_TYPES = frozenset([ 
293                        VTYPE_STRING, 
294                        VTYPE_BOOL, 
295                        VTYPE_SIZE, 
296                        VTYPE_INT, 
297                        ]) 
298   
299  # HV parameter names (global namespace) 
300  HV_BOOT_ORDER = "boot_order" 
301  HV_CDROM_IMAGE_PATH = "cdrom_image_path" 
302  HV_NIC_TYPE = "nic_type" 
303  HV_DISK_TYPE = "disk_type" 
304  HV_VNC_BIND_ADDRESS = "vnc_bind_address" 
305  HV_VNC_TLS = "vnc_tls" 
306  HV_VNC_X509 = "vnc_x509_path" 
307  HV_VNC_X509_VERIFY = "vnc_x509_verify" 
308  HV_ACPI = "acpi" 
309  HV_PAE = "pae" 
310  HV_KERNEL_ARGS = "kernel_args" 
311  HV_KERNEL_PATH = "kernel_path" 
312  HV_INITRD_PATH = "initrd_path" 
313  HV_ROOT_PATH = "root_path" 
314  HV_SERIAL_CONSOLE = "serial_console" 
315  HV_USB_MOUSE = "usb_mouse" 
316  HV_DEVICE_MODEL = "device_model" 
317   
318  HVS_PARAMETER_TYPES = { 
319    HV_BOOT_ORDER: VTYPE_STRING, 
320    HV_CDROM_IMAGE_PATH: VTYPE_STRING, 
321    HV_NIC_TYPE: VTYPE_STRING, 
322    HV_DISK_TYPE: VTYPE_STRING, 
323    HV_VNC_BIND_ADDRESS: VTYPE_STRING, 
324    HV_VNC_TLS: VTYPE_BOOL, 
325    HV_VNC_X509: VTYPE_STRING, 
326    HV_VNC_X509_VERIFY: VTYPE_BOOL, 
327    HV_ACPI: VTYPE_BOOL, 
328    HV_PAE: VTYPE_BOOL, 
329    HV_KERNEL_PATH: VTYPE_STRING, 
330    HV_KERNEL_ARGS: VTYPE_STRING, 
331    HV_INITRD_PATH: VTYPE_STRING, 
332    HV_ROOT_PATH: VTYPE_STRING, 
333    HV_SERIAL_CONSOLE: VTYPE_BOOL, 
334    HV_USB_MOUSE: VTYPE_STRING, 
335    HV_DEVICE_MODEL: VTYPE_STRING, 
336    } 
337   
338  HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys()) 
339   
340  # BE parameter names 
341  BE_MEMORY = "memory" 
342  BE_VCPUS = "vcpus" 
343  BE_AUTO_BALANCE = "auto_balance" 
344   
345  BES_PARAMETER_TYPES = { 
346      BE_MEMORY: VTYPE_SIZE, 
347      BE_VCPUS: VTYPE_INT, 
348      BE_AUTO_BALANCE: VTYPE_BOOL, 
349      } 
350   
351  BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys()) 
352   
353  # BE GROUP 
354  BEGR_DEFAULT = "default" 
355   
356  # Hypervisor constants 
357  HT_XEN_PVM = "xen-pvm" 
358  HT_FAKE = "fake" 
359  HT_XEN_HVM = "xen-hvm" 
360  HT_KVM = "kvm" 
361  HYPER_TYPES = frozenset([HT_XEN_PVM, HT_FAKE, HT_XEN_HVM, HT_KVM]) 
362  HTS_REQ_PORT = frozenset([HT_XEN_HVM, HT_KVM]) 
363  HTS_COPY_VNC_PASSWORD = frozenset([HT_XEN_HVM]) 
364   
365  VNC_BASE_PORT = 5900 
366  VNC_PASSWORD_FILE = _autoconf.SYSCONFDIR + "/ganeti/vnc-cluster-password" 
367  VNC_DEFAULT_BIND_ADDRESS = '0.0.0.0' 
368   
369  # NIC types 
370  HT_NIC_RTL8139 = "rtl8139" 
371  HT_NIC_NE2K_PCI = "ne2k_pci" 
372  HT_NIC_NE2K_ISA = "ne2k_isa" 
373  HT_NIC_I82551 = "i82551" 
374  HT_NIC_I85557B = "i82557b" 
375  HT_NIC_I8259ER = "i82559er" 
376  HT_NIC_PCNET = "pcnet" 
377  HT_NIC_E1000 = "e1000" 
378  HT_NIC_PARAVIRTUAL = HT_DISK_PARAVIRTUAL = "paravirtual" 
379   
380  HT_HVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI, 
381                                      HT_NIC_NE2K_ISA, HT_NIC_PARAVIRTUAL]) 
382  HT_KVM_VALID_NIC_TYPES = frozenset([HT_NIC_RTL8139, HT_NIC_NE2K_PCI, 
383                                      HT_NIC_NE2K_ISA, HT_NIC_I82551, 
384                                      HT_NIC_I85557B, HT_NIC_I8259ER, 
385                                      HT_NIC_PCNET, HT_NIC_E1000, 
386                                      HT_NIC_PARAVIRTUAL]) 
387  # Disk types 
388  HT_DISK_IOEMU = "ioemu" 
389  HT_DISK_IDE = "ide" 
390  HT_DISK_SCSI = "scsi" 
391  HT_DISK_SD = "sd" 
392  HT_DISK_MTD = "mtd" 
393  HT_DISK_PFLASH = "pflash" 
394   
395  HT_HVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IOEMU]) 
396  HT_KVM_VALID_DISK_TYPES = frozenset([HT_DISK_PARAVIRTUAL, HT_DISK_IDE, 
397                                       HT_DISK_SCSI, HT_DISK_SD, HT_DISK_MTD, 
398                                       HT_DISK_PFLASH]) 
399   
400  # Mouse types: 
401  HT_MOUSE_MOUSE = "mouse" 
402  HT_MOUSE_TABLET = "tablet" 
403   
404  HT_KVM_VALID_MOUSE_TYPES = frozenset([HT_MOUSE_MOUSE, HT_MOUSE_TABLET]) 
405   
406  # Boot order 
407  HT_BO_CDROM = "cdrom" 
408  HT_BO_DISK = "disk" 
409  HT_BO_NETWORK = "network" 
410   
411  HT_KVM_VALID_BO_TYPES = frozenset([HT_BO_CDROM, HT_BO_DISK, HT_BO_NETWORK]) 
412   
413  # Cluster Verify steps 
414  VERIFY_NPLUSONE_MEM = 'nplusone_mem' 
415  VERIFY_OPTIONAL_CHECKS = frozenset([VERIFY_NPLUSONE_MEM]) 
416   
417  # Node verify constants 
418  NV_FILELIST = "filelist" 
419  NV_HVINFO = "hvinfo" 
420  NV_HYPERVISOR = "hypervisor" 
421  NV_INSTANCELIST = "instancelist" 
422  NV_LVLIST = "lvlist" 
423  NV_NODELIST = "nodelist" 
424  NV_NODENETTEST = "node-net-test" 
425  NV_VERSION = "version" 
426  NV_VGLIST = "vglist" 
427  NV_DRBDLIST = "drbd-list" 
428   
429  # Allocator framework constants 
430  IALLOCATOR_VERSION = 2 
431  IALLOCATOR_DIR_IN = "in" 
432  IALLOCATOR_DIR_OUT = "out" 
433  IALLOCATOR_MODE_ALLOC = "allocate" 
434  IALLOCATOR_MODE_RELOC = "relocate" 
435  IALLOCATOR_SEARCH_PATH = _autoconf.IALLOCATOR_SEARCH_PATH 
436  IARUN_NOTFOUND = 1 
437  IARUN_FAILURE = 2 
438  IARUN_SUCCESS = 3 
439   
440  # Job queue 
441  JOB_QUEUE_VERSION = 1 
442  JOB_QUEUE_LOCK_FILE = QUEUE_DIR + "/lock" 
443  JOB_QUEUE_VERSION_FILE = QUEUE_DIR + "/version" 
444  JOB_QUEUE_SERIAL_FILE = QUEUE_DIR + "/serial" 
445  JOB_QUEUE_ARCHIVE_DIR = QUEUE_DIR + "/archive" 
446  JOB_QUEUE_DRAIN_FILE = QUEUE_DIR + "/drain" 
447  JOB_QUEUE_SIZE_HARD_LIMIT = 5000 
448  JOB_QUEUE_SIZE_SOFT_LIMIT = JOB_QUEUE_SIZE_HARD_LIMIT * 0.8 
449   
450  JOB_ID_TEMPLATE = r"\d+" 
451   
452  # unchanged job return 
453  JOB_NOTCHANGED = "nochange" 
454   
455  # Job status 
456  JOB_STATUS_QUEUED = "queued" 
457  JOB_STATUS_WAITLOCK = "waiting" 
458  JOB_STATUS_CANCELING = "canceling" 
459  JOB_STATUS_RUNNING = "running" 
460  JOB_STATUS_CANCELED = "canceled" 
461  JOB_STATUS_SUCCESS = "success" 
462  JOB_STATUS_ERROR = "error" 
463   
464  # OpCode status 
465  # not yet finalized 
466  OP_STATUS_QUEUED = "queued" 
467  OP_STATUS_WAITLOCK = "waiting" 
468  OP_STATUS_CANCELING = "canceling" 
469  OP_STATUS_RUNNING = "running" 
470  # finalized 
471  OP_STATUS_CANCELED = "canceled" 
472  OP_STATUS_SUCCESS = "success" 
473  OP_STATUS_ERROR = "error" 
474  OPS_FINALIZED = frozenset([OP_STATUS_CANCELED, 
475                             OP_STATUS_SUCCESS, 
476                             OP_STATUS_ERROR]) 
477   
478  # Execution log types 
479  ELOG_MESSAGE = "message" 
480  ELOG_PROGRESS = "progress" 
481   
482  RAPI_PORT = 5080 
483   
484  # max dynamic devices 
485  MAX_NICS = 8 
486  MAX_DISKS = 16 
487   
488  # SSCONF keys 
489  SS_CLUSTER_NAME = "cluster_name" 
490  SS_CLUSTER_TAGS = "cluster_tags" 
491  SS_FILE_STORAGE_DIR = "file_storage_dir" 
492  SS_MASTER_CANDIDATES = "master_candidates" 
493  SS_MASTER_IP = "master_ip" 
494  SS_MASTER_NETDEV = "master_netdev" 
495  SS_MASTER_NODE = "master_node" 
496  SS_NODE_LIST = "node_list" 
497  SS_OFFLINE_NODES = "offline_nodes" 
498  SS_ONLINE_NODES = "online_nodes" 
499  SS_INSTANCE_LIST = "instance_list" 
500  SS_RELEASE_VERSION = "release_version" 
501   
502  # cluster wide default parameters 
503  DEFAULT_ENABLED_HYPERVISOR = HT_XEN_PVM 
504   
505  HVC_DEFAULTS = { 
506    HT_XEN_PVM: { 
507      HV_KERNEL_PATH: "/boot/vmlinuz-2.6-xenU", 
508      HV_INITRD_PATH: '', 
509      HV_ROOT_PATH: '/dev/sda1', 
510      HV_KERNEL_ARGS: 'ro', 
511      }, 
512    HT_XEN_HVM: { 
513      HV_BOOT_ORDER: "cd", 
514      HV_CDROM_IMAGE_PATH: '', 
515      HV_NIC_TYPE: HT_NIC_RTL8139, 
516      HV_DISK_TYPE: HT_DISK_PARAVIRTUAL, 
517      HV_VNC_BIND_ADDRESS: '0.0.0.0', 
518      HV_ACPI: True, 
519      HV_PAE: True, 
520      HV_KERNEL_PATH: "/usr/lib/xen/boot/hvmloader", 
521      HV_DEVICE_MODEL: "/usr/lib/xen/bin/qemu-dm", 
522      }, 
523    HT_KVM: { 
524      HV_KERNEL_PATH: "/boot/vmlinuz-2.6-kvmU", 
525      HV_INITRD_PATH: '', 
526      HV_KERNEL_ARGS: 'ro', 
527      HV_ROOT_PATH: '/dev/vda1', 
528      HV_ACPI: True, 
529      HV_SERIAL_CONSOLE: True, 
530      HV_VNC_BIND_ADDRESS: '', 
531      HV_VNC_TLS: False, 
532      HV_VNC_X509: '', 
533      HV_VNC_X509_VERIFY: False, 
534      HV_CDROM_IMAGE_PATH: '', 
535      HV_BOOT_ORDER: HT_BO_DISK, 
536      HV_NIC_TYPE: HT_NIC_PARAVIRTUAL, 
537      HV_DISK_TYPE: HT_DISK_PARAVIRTUAL, 
538      HV_USB_MOUSE: '', 
539      }, 
540    HT_FAKE: { 
541      }, 
542    } 
543   
544  BEC_DEFAULTS = { 
545    BE_MEMORY: 128, 
546    BE_VCPUS: 1, 
547    BE_AUTO_BALANCE: True, 
548    } 
549   
550  MASTER_POOL_SIZE_DEFAULT = 10 
551