constants.py 52.4 KB
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#
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#

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# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Google Inc.
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#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


"""Module holding different constants."""

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import re
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import socket
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from ganeti import _autoconf
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from ganeti import _vcsversion
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from ganeti import pathutils
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# various versions
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RELEASE_VERSION = _autoconf.PACKAGE_VERSION
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OS_API_V10 = 10
OS_API_V15 = 15
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OS_API_V20 = 20
OS_API_VERSIONS = frozenset([OS_API_V10, OS_API_V15, OS_API_V20])
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VCS_VERSION = _vcsversion.VCS_VERSION
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EXPORT_VERSION = 0
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RAPI_VERSION = 2
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# Format for CONFIG_VERSION:
#   01 03 0123 = 01030123
#   ^^ ^^ ^^^^
#   |  |  + Configuration version/revision
#   |  + Minor version
#   + Major version
#
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# It is stored as an integer. Make sure not to write an octal number.
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# BuildVersion and SplitVersion must be in here because we can't import other
# modules. The cfgupgrade tool must be able to read and write version numbers
# and thus requires these functions. To avoid code duplication, they're kept in
# here.

def BuildVersion(major, minor, revision):
  """Calculates int version number from major, minor and revision numbers.

  Returns: int representing version number

  """
  assert isinstance(major, int)
  assert isinstance(minor, int)
  assert isinstance(revision, int)
  return (1000000 * major +
            10000 * minor +
                1 * revision)


def SplitVersion(version):
  """Splits version number stored in an int.

  Returns: tuple; (major, minor, revision)

  """
  assert isinstance(version, int)

  (major, remainder) = divmod(version, 1000000)
  (minor, revision) = divmod(remainder, 10000)

  return (major, minor, revision)


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CONFIG_MAJOR = int(_autoconf.VERSION_MAJOR)
CONFIG_MINOR = int(_autoconf.VERSION_MINOR)
CONFIG_REVISION = 0
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CONFIG_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, CONFIG_REVISION)
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#: RPC protocol version
PROTOCOL_VERSION = BuildVersion(CONFIG_MAJOR, CONFIG_MINOR, 0)

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# user separation
DAEMONS_GROUP = _autoconf.DAEMONS_GROUP
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ADMIN_GROUP = _autoconf.ADMIN_GROUP
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MASTERD_USER = _autoconf.MASTERD_USER
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MASTERD_GROUP = _autoconf.MASTERD_GROUP
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RAPI_USER = _autoconf.RAPI_USER
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RAPI_GROUP = _autoconf.RAPI_GROUP
CONFD_USER = _autoconf.CONFD_USER
CONFD_GROUP = _autoconf.CONFD_GROUP
NODED_USER = _autoconf.NODED_USER
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NODED_GROUP = _autoconf.NODED_GROUP
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# cpu pinning separators and constants
CPU_PINNING_SEP = ":"
CPU_PINNING_ALL = "all"
# internal representation of "all"
CPU_PINNING_ALL_VAL = -1
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# one "all" entry in a CPU list means CPU pinning is off
CPU_PINNING_OFF = [CPU_PINNING_ALL_VAL]
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# A Xen-specific implementation detail - there is no way to actually say
# "use any cpu for pinning" in a Xen configuration file, as opposed to the
# command line, where you can say "xm vcpu-pin <domain> <vcpu> all".
# The workaround used in Xen is "0-63" (see source code function
# xm_vcpu_pin in <xen-source>/tools/python/xen/xm/main.py).
# To support future changes, the following constant is treated as a
# blackbox string that simply means use-any-cpu-for-pinning-under-xen.
CPU_PINNING_ALL_XEN = "0-63"
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# A KVM-specific implementation detail - the following value is used
# to set CPU affinity to all processors (#0 through #31), per taskset
# man page.
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# FIXME: This only works for machines with up to 32 CPU cores
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CPU_PINNING_ALL_KVM = 0xFFFFFFFF

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# Wipe
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DD_CMD = "dd"
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WIPE_BLOCK_SIZE = 1024 ** 2
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MAX_WIPE_CHUNK = 1024 # 1GB
MIN_WIPE_CHUNK_PERCENT = 10

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RUN_DIRS_MODE = 0775
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SECURE_DIR_MODE = 0700
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SECURE_FILE_MODE = 0600
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ADOPTABLE_BLOCKDEV_ROOT = "/dev/disk/"
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ETC_HOSTS = "/etc/hosts"
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ENABLE_FILE_STORAGE = _autoconf.ENABLE_FILE_STORAGE
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ENABLE_SHARED_FILE_STORAGE = _autoconf.ENABLE_SHARED_FILE_STORAGE
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ENABLE_CONFD = _autoconf.ENABLE_CONFD
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HS_CONFD = _autoconf.HS_CONFD
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ENABLE_SPLIT_QUERY = _autoconf.ENABLE_SPLIT_QUERY
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NODED = "ganeti-noded"
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CONFD = "ganeti-confd"
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RAPI = "ganeti-rapi"
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MASTERD = "ganeti-masterd"
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# used in the ganeti-nbma project
NLD = "ganeti-nld"
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DAEMONS_PORTS = {
  # daemon-name: ("proto", "default-port")
  NODED: ("tcp", 1811),
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  CONFD: ("udp", 1814),
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  RAPI: ("tcp", 5080),
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  "ssh": ("tcp", 22),
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  # used in the ganeti-nbma project
  NLD: ("udp", 1816),
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}
DEFAULT_NODED_PORT = DAEMONS_PORTS[NODED][1]
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DEFAULT_CONFD_PORT = DAEMONS_PORTS[CONFD][1]
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DEFAULT_RAPI_PORT = DAEMONS_PORTS[RAPI][1]
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# used in the ganeti-nbma project
DEFAULT_NLD_PORT = DAEMONS_PORTS[NLD][1]
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FIRST_DRBD_PORT = 11000
LAST_DRBD_PORT = 14999

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DEV_CONSOLE = "/dev/console"

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PROC_MOUNTS = "/proc/mounts"

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# Local UniX Interface related constants
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LUXI_EOM = "\3"
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LUXI_VERSION = CONFIG_VERSION
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# one of "no", "yes", "only"
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SYSLOG_USAGE = _autoconf.SYSLOG_USAGE
SYSLOG_NO = "no"
SYSLOG_YES = "yes"
SYSLOG_ONLY = "only"
SYSLOG_SOCKET = "/dev/log"

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EXPORT_CONF_FILE = "config.ini"

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XEN_BOOTLOADER = _autoconf.XEN_BOOTLOADER
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XEN_KERNEL = _autoconf.XEN_KERNEL
XEN_INITRD = _autoconf.XEN_INITRD
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XEN_CMD_XM = "xm"
XEN_CMD_XL = "xl"
# FIXME: This will be made configurable using hvparams in Ganeti 2.7
XEN_CMD = _autoconf.XEN_CMD
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KVM_PATH = _autoconf.KVM_PATH
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KVM_KERNEL = _autoconf.KVM_KERNEL
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SOCAT_PATH = _autoconf.SOCAT_PATH
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SOCAT_USE_ESCAPE = _autoconf.SOCAT_USE_ESCAPE
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SOCAT_USE_COMPRESS = _autoconf.SOCAT_USE_COMPRESS
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SOCAT_ESCAPE_CODE = "0x1d"
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#: Console as SSH command
CONS_SSH = "ssh"

#: Console as VNC server
CONS_VNC = "vnc"

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#: Console as SPICE server
CONS_SPICE = "spice"

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#: Display a message for console access
CONS_MESSAGE = "msg"

#: All console types
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CONS_ALL = frozenset([CONS_SSH, CONS_VNC, CONS_SPICE, CONS_MESSAGE])
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# For RSA keys more bits are better, but they also make operations more
# expensive. NIST SP 800-131 recommends a minimum of 2048 bits from the year
# 2010 on.
RSA_KEY_BITS = 2048

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# Ciphers allowed for SSL connections. For the format, see ciphers(1). A better
# way to disable ciphers would be to use the exclamation mark (!), but socat
# versions below 1.5 can't parse exclamation marks in options properly. When
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# modifying the ciphers, ensure not to accidentially add something after it's
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# been removed. Use the "openssl" utility to check the allowed ciphers, e.g.
# "openssl ciphers -v HIGH:-DES".
OPENSSL_CIPHERS = "HIGH:-DES:-3DES:-EXPORT:-ADH"

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# Digest used to sign certificates ("openssl x509" uses SHA1 by default)
X509_CERT_SIGN_DIGEST = "SHA1"

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# Default validity of certificates in days
X509_CERT_DEFAULT_VALIDITY = 365 * 5

# commonName (CN) used in certificates
X509_CERT_CN = "ganeti.example.com"

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X509_CERT_SIGNATURE_HEADER = "X-Ganeti-Signature"

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# Import/export daemon mode
IEM_IMPORT = "import"
IEM_EXPORT = "export"

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# Import/export transport compression
IEC_NONE = "none"
IEC_GZIP = "gzip"
IEC_ALL = frozenset([
  IEC_NONE,
  IEC_GZIP,
  ])

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IE_CUSTOM_SIZE = "fd"

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IE_MAGIC_RE = re.compile(r"^[-_.a-zA-Z0-9]{5,100}$")

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# Import/export I/O
# Direct file I/O, equivalent to a shell's I/O redirection using '<' or '>'
IEIO_FILE = "file"
# Raw block device I/O using "dd"
IEIO_RAW_DISK = "raw"
# OS definition import/export script
IEIO_SCRIPT = "script"

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VALUE_DEFAULT = "default"
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VALUE_AUTO = "auto"
VALUE_GENERATE = "generate"
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VALUE_NONE = "none"
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VALUE_TRUE = "true"
VALUE_FALSE = "false"
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# External script validation mask
EXT_PLUGIN_MASK = re.compile("^[a-zA-Z0-9_-]+$")

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# hooks-related constants
HOOKS_PHASE_PRE = "pre"
HOOKS_PHASE_POST = "post"
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HOOKS_NAME_CFGUPDATE = "config-update"
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HOOKS_NAME_WATCHER = "watcher"
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HOOKS_VERSION = 2
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HOOKS_PATH = "/sbin:/bin:/usr/sbin:/usr/bin"
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# hooks subject type (what object type does the LU deal with)
HTYPE_CLUSTER = "CLUSTER"
HTYPE_NODE = "NODE"
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HTYPE_GROUP = "GROUP"
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HTYPE_INSTANCE = "INSTANCE"

HKR_SKIP = 0
HKR_FAIL = 1
HKR_SUCCESS = 2

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# Storage types
ST_FILE = "file"
ST_LVM_PV = "lvm-pv"
ST_LVM_VG = "lvm-vg"
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# Storage fields
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# first two are valid in LU context only, not passed to backend
SF_NODE = "node"
SF_TYPE = "type"
# and the rest are valid in backend
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SF_NAME = "name"
SF_SIZE = "size"
SF_FREE = "free"
SF_USED = "used"
SF_ALLOCATABLE = "allocatable"

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# Storage operations
SO_FIX_CONSISTENCY = "fix-consistency"

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# Available fields per storage type
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VALID_STORAGE_FIELDS = frozenset([
  SF_NAME,
  SF_TYPE,
  SF_SIZE,
  SF_USED,
  SF_FREE,
  SF_ALLOCATABLE
  ])
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VALID_STORAGE_TYPES = frozenset([ST_FILE, ST_LVM_PV, ST_LVM_VG])
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MODIFIABLE_STORAGE_FIELDS = {
  ST_LVM_PV: frozenset([SF_ALLOCATABLE]),
  }

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VALID_STORAGE_OPERATIONS = {
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  ST_LVM_VG: frozenset([SO_FIX_CONSISTENCY]),
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  }

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# Local disk status
# Note: Code depends on LDS_OKAY < LDS_UNKNOWN < LDS_FAULTY
(LDS_OKAY,
 LDS_UNKNOWN,
 LDS_FAULTY) = range(1, 4)

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# disk template types
DT_DISKLESS = "diskless"
DT_PLAIN = "plain"
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DT_DRBD8 = "drbd"
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DT_FILE = "file"
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DT_SHARED_FILE = "sharedfile"
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DT_BLOCK = "blockdev"
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DT_RBD = "rbd"
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# the set of network-mirrored disk templates
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DTS_INT_MIRROR = frozenset([DT_DRBD8])
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# the set of externally-mirrored disk templates (e.g. SAN, NAS)
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DTS_EXT_MIRROR = frozenset([DT_SHARED_FILE, DT_BLOCK, DT_RBD])
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# the set of non-lvm-based disk templates
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DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE, DT_SHARED_FILE,
                         DT_BLOCK, DT_RBD])
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# the set of disk templates which can be grown
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DTS_GROWABLE = frozenset([DT_PLAIN, DT_DRBD8, DT_FILE, DT_SHARED_FILE, DT_RBD])
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# the set of disk templates that allow adoption
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DTS_MAY_ADOPT = frozenset([DT_PLAIN, DT_BLOCK])

# the set of disk templates that *must* use adoption
DTS_MUST_ADOPT = frozenset([DT_BLOCK])
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# the set of disk templates that allow migrations
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DTS_MIRRORED = frozenset.union(DTS_INT_MIRROR, DTS_EXT_MIRROR)
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# the set of file based disk templates
DTS_FILEBASED = frozenset([DT_FILE, DT_SHARED_FILE])
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# logical disk types
LD_LV = "lvm"
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LD_DRBD8 = "drbd8"
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LD_FILE = "file"
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LD_BLOCKDEV = "blockdev"
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LD_RBD = "rbd"
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LOGICAL_DISK_TYPES = frozenset([
  LD_LV,
  LD_DRBD8,
  LD_FILE,
  LD_BLOCKDEV,
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  LD_RBD,
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  ])

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LDS_BLOCK = frozenset([LD_LV, LD_DRBD8, LD_BLOCKDEV, LD_RBD])
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# drbd constants
DRBD_HMAC_ALG = "md5"
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DRBD_NET_PROTOCOL = "C"
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#: Size of DRBD meta block device
DRBD_META_SIZE = 128

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# drbd barrier types
DRBD_B_NONE = "n"
DRBD_B_DISK_BARRIERS = "b"
DRBD_B_DISK_DRAIN = "d"
DRBD_B_DISK_FLUSH = "f"

# Valid barrier combinations: "n" or any non-null subset of "bfd"
DRBD_VALID_BARRIER_OPT = frozenset([
  frozenset([DRBD_B_NONE]),
  frozenset([DRBD_B_DISK_BARRIERS]),
  frozenset([DRBD_B_DISK_DRAIN]),
  frozenset([DRBD_B_DISK_FLUSH]),
  frozenset([DRBD_B_DISK_DRAIN, DRBD_B_DISK_FLUSH]),
  frozenset([DRBD_B_DISK_DRAIN, DRBD_B_DISK_FLUSH]),
  frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_DRAIN]),
  frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_FLUSH]),
  frozenset([DRBD_B_DISK_BARRIERS, DRBD_B_DISK_FLUSH, DRBD_B_DISK_DRAIN]),
  ])
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# rbd tool command
RBD_CMD = "rbd"

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# file backend driver
FD_LOOP = "loop"
FD_BLKTAP = "blktap"
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# the set of drbd-like disk types
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LDS_DRBD = frozenset([LD_DRBD8])
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# disk access mode
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DISK_RDONLY = "ro"
DISK_RDWR = "rw"
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DISK_ACCESS_SET = frozenset([DISK_RDONLY, DISK_RDWR])

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# disk replacement mode
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REPLACE_DISK_PRI = "replace_on_primary"    # replace disks on primary
REPLACE_DISK_SEC = "replace_on_secondary"  # replace disks on secondary
REPLACE_DISK_CHG = "replace_new_secondary" # change secondary node
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REPLACE_DISK_AUTO = "replace_auto"
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REPLACE_MODES = frozenset([
  REPLACE_DISK_PRI,
  REPLACE_DISK_SEC,
  REPLACE_DISK_CHG,
  REPLACE_DISK_AUTO,
  ])
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# Instance export mode
EXPORT_MODE_LOCAL = "local"
EXPORT_MODE_REMOTE = "remote"
EXPORT_MODES = frozenset([
  EXPORT_MODE_LOCAL,
  EXPORT_MODE_REMOTE,
  ])

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# instance creation modes
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INSTANCE_CREATE = "create"
INSTANCE_IMPORT = "import"
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INSTANCE_REMOTE_IMPORT = "remote-import"
INSTANCE_CREATE_MODES = frozenset([
  INSTANCE_CREATE,
  INSTANCE_IMPORT,
  INSTANCE_REMOTE_IMPORT,
  ])
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# Remote import/export handshake message and version
RIE_VERSION = 0
RIE_HANDSHAKE = "Hi, I'm Ganeti"

# Remote import/export certificate validity in seconds
RIE_CERT_VALIDITY = 24 * 60 * 60

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# Overall timeout for establishing connection
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RIE_CONNECT_TIMEOUT = 180
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# Export only: how long to wait per connection attempt (seconds)
RIE_CONNECT_ATTEMPT_TIMEOUT = 20

# Export only: number of attempts to connect
RIE_CONNECT_RETRIES = 10

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#: Give child process up to 5 seconds to exit after sending a signal
CHILD_LINGER_TIMEOUT = 5.0
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DISK_TEMPLATES = frozenset([
  DT_DISKLESS,
  DT_PLAIN,
  DT_DRBD8,
  DT_FILE,
  DT_SHARED_FILE,
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  DT_BLOCK,
  DT_RBD
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  ])
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FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
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# import/export config options
INISECT_EXP = "export"
INISECT_INS = "instance"
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INISECT_HYP = "hypervisor"
INISECT_BEP = "backend"
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INISECT_OSP = "os"
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# dynamic device modification
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DDM_ADD = "add"
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DDM_MODIFY = "modify"
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DDM_REMOVE = "remove"
DDMS_VALUES = frozenset([DDM_ADD, DDM_REMOVE])
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DDMS_VALUES_WITH_MODIFY = (DDMS_VALUES | frozenset([
  DDM_MODIFY,
  ]))
# TODO: DDM_SWAP, DDM_MOVE?
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# common exit codes
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EXIT_SUCCESS = 0
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EXIT_FAILURE = 1
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EXIT_NOTCLUSTER = 5
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EXIT_NOTMASTER = 11
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EXIT_NODESETUP_ERROR = 12
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EXIT_CONFIRMATION = 13 # need user confirmation
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#: Exit code for query operations with unknown fields
EXIT_UNKNOWN_FIELD = 14

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# tags
TAG_CLUSTER = "cluster"
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TAG_NODEGROUP = "nodegroup"
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TAG_NODE = "node"
TAG_INSTANCE = "instance"
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VALID_TAG_TYPES = frozenset([
  TAG_CLUSTER,
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  TAG_NODEGROUP,
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  TAG_NODE,
  TAG_INSTANCE,
  ])
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MAX_TAG_LEN = 128
MAX_TAGS_PER_OBJ = 4096

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# others
DEFAULT_BRIDGE = "xen-br0"
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CLASSIC_DRBD_SYNC_SPEED = 60 * 1024  # 60 MiB, expressed in KiB
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IP4_ADDRESS_LOCALHOST = "127.0.0.1"
IP4_ADDRESS_ANY = "0.0.0.0"
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IP6_ADDRESS_LOCALHOST = "::1"
IP6_ADDRESS_ANY = "::"
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IP4_VERSION = 4
IP6_VERSION = 6
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VALID_IP_VERSIONS = frozenset([IP4_VERSION, IP6_VERSION])
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# for export to htools
IP4_FAMILY = socket.AF_INET
IP6_FAMILY = socket.AF_INET6

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TCP_PING_TIMEOUT = 10
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GANETI_RUNAS = "root"
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DEFAULT_VG = "xenvg"
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DEFAULT_DRBD_HELPER = "/bin/true"
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MIN_VG_SIZE = 20480
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DEFAULT_MAC_PREFIX = "aa:00:00"
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# default maximum instance wait time, in seconds.
DEFAULT_SHUTDOWN_TIMEOUT = 120
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NODE_MAX_CLOCK_SKEW = 150
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# Time for an intra-cluster disk transfer to wait for a connection
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DISK_TRANSFER_CONNECT_TIMEOUT = 60
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# Disk index separator
DISK_SEPARATOR = _autoconf.DISK_SEPARATOR
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IP_COMMAND_PATH = _autoconf.IP_PATH
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#: Key for job IDs in opcode result
JOB_IDS_KEY = "jobs"

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# runparts results
(RUNPARTS_SKIP,
 RUNPARTS_RUN,
 RUNPARTS_ERR) = range(3)

RUNPARTS_STATUS = frozenset([RUNPARTS_SKIP, RUNPARTS_RUN, RUNPARTS_ERR])

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# RPC constants
(RPC_ENCODING_NONE,
 RPC_ENCODING_ZLIB_BASE64) = range(2)

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# Various time constants for the timeout table
RPC_TMO_URGENT = 60 # one minute
RPC_TMO_FAST = 5 * 60 # five minutes
RPC_TMO_NORMAL = 15 * 60 # 15 minutes
RPC_TMO_SLOW = 3600 # one hour
RPC_TMO_4HRS = 4 * 3600
RPC_TMO_1DAY = 86400

# Timeout for connecting to nodes (seconds)
RPC_CONNECT_TIMEOUT = 5

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# os related constants
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OS_SCRIPT_CREATE = "create"
OS_SCRIPT_IMPORT = "import"
OS_SCRIPT_EXPORT = "export"
OS_SCRIPT_RENAME = "rename"
OS_SCRIPT_VERIFY = "verify"
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OS_SCRIPTS = frozenset([
  OS_SCRIPT_CREATE,
  OS_SCRIPT_IMPORT,
  OS_SCRIPT_EXPORT,
  OS_SCRIPT_RENAME,
  OS_SCRIPT_VERIFY
  ])
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OS_API_FILE = "ganeti_api_version"
OS_VARIANTS_FILE = "variants.list"
OS_PARAMETERS_FILE = "parameters.list"
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OS_VALIDATE_PARAMETERS = "parameters"
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OS_VALIDATE_CALLS = frozenset([OS_VALIDATE_PARAMETERS])
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# ssh constants
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SSH = "ssh"
SCP = "scp"
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# reboot types
INSTANCE_REBOOT_SOFT = "soft"
INSTANCE_REBOOT_HARD = "hard"
INSTANCE_REBOOT_FULL = "full"
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REBOOT_TYPES = frozenset([
  INSTANCE_REBOOT_SOFT,
  INSTANCE_REBOOT_HARD,
  INSTANCE_REBOOT_FULL
  ])

# instance reboot behaviors
INSTANCE_REBOOT_ALLOWED = "reboot"
INSTANCE_REBOOT_EXIT = "exit"

REBOOT_BEHAVIORS = frozenset([
  INSTANCE_REBOOT_ALLOWED,
  INSTANCE_REBOOT_EXIT
  ])
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VTYPE_STRING = "string"
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VTYPE_MAYBE_STRING = "maybe-string"
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VTYPE_BOOL = "bool"
VTYPE_SIZE = "size" # size, in MiBs
VTYPE_INT = "int"
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ENFORCEABLE_TYPES = frozenset([
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  VTYPE_STRING,
  VTYPE_MAYBE_STRING,
  VTYPE_BOOL,
  VTYPE_SIZE,
  VTYPE_INT,
  ])
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# Constant representing that the user does not specify any IP version
IFACE_NO_IP_VERSION_SPECIFIED = 0

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# HV parameter names (global namespace)
HV_BOOT_ORDER = "boot_order"
HV_CDROM_IMAGE_PATH = "cdrom_image_path"
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HV_KVM_CDROM2_IMAGE_PATH = "cdrom2_image_path"
HV_KVM_FLOPPY_IMAGE_PATH = "floppy_image_path"
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HV_NIC_TYPE = "nic_type"
HV_DISK_TYPE = "disk_type"
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HV_KVM_CDROM_DISK_TYPE = "cdrom_disk_type"
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HV_VNC_BIND_ADDRESS = "vnc_bind_address"
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HV_VNC_PASSWORD_FILE = "vnc_password_file"
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HV_VNC_TLS = "vnc_tls"
HV_VNC_X509 = "vnc_x509_path"
HV_VNC_X509_VERIFY = "vnc_x509_verify"
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HV_KVM_SPICE_BIND = "spice_bind"
HV_KVM_SPICE_IP_VERSION = "spice_ip_version"
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HV_KVM_SPICE_PASSWORD_FILE = "spice_password_file"
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HV_KVM_SPICE_LOSSLESS_IMG_COMPR = "spice_image_compression"
HV_KVM_SPICE_JPEG_IMG_COMPR = "spice_jpeg_wan_compression"
HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR = "spice_zlib_glz_wan_compression"
HV_KVM_SPICE_STREAMING_VIDEO_DETECTION = "spice_streaming_video"
HV_KVM_SPICE_AUDIO_COMPR = "spice_playback_compression"
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HV_KVM_SPICE_USE_TLS = "spice_use_tls"
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HV_KVM_SPICE_TLS_CIPHERS = "spice_tls_ciphers"
HV_KVM_SPICE_USE_VDAGENT = "spice_use_vdagent"
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HV_ACPI = "acpi"
HV_PAE = "pae"
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HV_USE_BOOTLOADER = "use_bootloader"
HV_BOOTLOADER_ARGS = "bootloader_args"
HV_BOOTLOADER_PATH = "bootloader_path"
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HV_KERNEL_ARGS = "kernel_args"
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HV_KERNEL_PATH = "kernel_path"
HV_INITRD_PATH = "initrd_path"
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HV_ROOT_PATH = "root_path"
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HV_SERIAL_CONSOLE = "serial_console"
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HV_USB_MOUSE = "usb_mouse"
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HV_KEYMAP = "keymap"
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HV_DEVICE_MODEL = "device_model"
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HV_INIT_SCRIPT = "init_script"
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HV_MIGRATION_PORT = "migration_port"
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HV_MIGRATION_BANDWIDTH = "migration_bandwidth"
HV_MIGRATION_DOWNTIME = "migration_downtime"
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HV_MIGRATION_MODE = "migration_mode"
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HV_USE_LOCALTIME = "use_localtime"
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HV_DISK_CACHE = "disk_cache"
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HV_SECURITY_MODEL = "security_model"
HV_SECURITY_DOMAIN = "security_domain"
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HV_KVM_FLAG = "kvm_flag"
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HV_VHOST_NET = "vhost_net"
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HV_KVM_USE_CHROOT = "use_chroot"
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HV_CPU_MASK = "cpu_mask"
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HV_MEM_PATH = "mem_path"
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HV_PASSTHROUGH = "pci_pass"
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HV_BLOCKDEV_PREFIX = "blockdev_prefix"
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HV_REBOOT_BEHAVIOR = "reboot_behavior"
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HV_CPU_TYPE = "cpu_type"
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HVS_PARAMETER_TYPES = {
  HV_BOOT_ORDER: VTYPE_STRING,
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  HV_KVM_FLOPPY_IMAGE_PATH: VTYPE_STRING,
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  HV_CDROM_IMAGE_PATH: VTYPE_STRING,
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  HV_KVM_CDROM2_IMAGE_PATH: VTYPE_STRING,
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  HV_NIC_TYPE: VTYPE_STRING,
  HV_DISK_TYPE: VTYPE_STRING,
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  HV_KVM_CDROM_DISK_TYPE: VTYPE_STRING,
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  HV_VNC_PASSWORD_FILE: VTYPE_STRING,
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  HV_VNC_BIND_ADDRESS: VTYPE_STRING,
  HV_VNC_TLS: VTYPE_BOOL,
  HV_VNC_X509: VTYPE_STRING,
  HV_VNC_X509_VERIFY: VTYPE_BOOL,
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  HV_KVM_SPICE_BIND: VTYPE_STRING,
  HV_KVM_SPICE_IP_VERSION: VTYPE_INT,
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  HV_KVM_SPICE_PASSWORD_FILE: VTYPE_STRING,
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  HV_KVM_SPICE_LOSSLESS_IMG_COMPR: VTYPE_STRING,
  HV_KVM_SPICE_JPEG_IMG_COMPR: VTYPE_STRING,
  HV_KVM_SPICE_ZLIB_GLZ_IMG_COMPR: VTYPE_STRING,
  HV_KVM_SPICE_STREAMING_VIDEO_DETECTION: VTYPE_STRING,
  HV_KVM_SPICE_AUDIO_COMPR: VTYPE_BOOL,
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  HV_KVM_SPICE_USE_TLS: VTYPE_BOOL,
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  HV_KVM_SPICE_TLS_CIPHERS: VTYPE_STRING,
  HV_KVM_SPICE_USE_VDAGENT: VTYPE_BOOL,
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  HV_ACPI: VTYPE_BOOL,
  HV_PAE: VTYPE_BOOL,
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  HV_USE_BOOTLOADER: VTYPE_BOOL,
  HV_BOOTLOADER_PATH: VTYPE_STRING,
  HV_BOOTLOADER_ARGS: VTYPE_STRING,
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  HV_KERNEL_PATH: VTYPE_STRING,
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  HV_KERNEL_ARGS: VTYPE_STRING,
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  HV_INITRD_PATH: VTYPE_STRING,
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  HV_ROOT_PATH: VTYPE_MAYBE_STRING,
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  HV_SERIAL_CONSOLE: VTYPE_BOOL,
  HV_USB_MOUSE: VTYPE_STRING,
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  HV_KEYMAP: VTYPE_STRING,
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  HV_DEVICE_MODEL: VTYPE_STRING,
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  HV_INIT_SCRIPT: VTYPE_STRING,
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  HV_MIGRATION_PORT: VTYPE_INT,
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  HV_MIGRATION_BANDWIDTH: VTYPE_INT,
  HV_MIGRATION_DOWNTIME: VTYPE_INT,
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  HV_MIGRATION_MODE: VTYPE_STRING,
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  HV_USE_LOCALTIME: VTYPE_BOOL,
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  HV_DISK_CACHE: VTYPE_STRING,
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  HV_SECURITY_MODEL: VTYPE_STRING,
  HV_SECURITY_DOMAIN: VTYPE_STRING,
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  HV_KVM_FLAG: VTYPE_STRING,
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  HV_VHOST_NET: VTYPE_BOOL,
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  HV_KVM_USE_CHROOT: VTYPE_BOOL,
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  HV_CPU_MASK: VTYPE_STRING,
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  HV_MEM_PATH: VTYPE_STRING,
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  HV_PASSTHROUGH: VTYPE_STRING,
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  HV_BLOCKDEV_PREFIX: VTYPE_STRING,
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  HV_REBOOT_BEHAVIOR: VTYPE_STRING,
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  HV_CPU_TYPE: VTYPE_STRING,
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  }

HVS_PARAMETERS = frozenset(HVS_PARAMETER_TYPES.keys())
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HVS_PARAMETER_TITLES = {
  HV_ACPI: "ACPI",
  HV_BOOT_ORDER: "Boot_order",
  HV_CDROM_IMAGE_PATH: "CDROM_image_path",
  HV_DISK_TYPE: "Disk_type",
  HV_INITRD_PATH: "Initrd_path",
  HV_KERNEL_PATH: "Kernel_path",
  HV_NIC_TYPE: "NIC_type",
  HV_PAE: "PAE",
  HV_VNC_BIND_ADDRESS: "VNC_bind_address",
  HV_PASSTHROUGH: "pci_pass",
  HV_CPU_TYPE: "cpu_type",
  }

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# Migration statuses
HV_MIGRATION_COMPLETED = "completed"
HV_MIGRATION_ACTIVE = "active"
HV_MIGRATION_FAILED = "failed"
HV_MIGRATION_CANCELLED = "cancelled"

HV_MIGRATION_VALID_STATUSES = frozenset([
  HV_MIGRATION_COMPLETED,
  HV_MIGRATION_ACTIVE,
  HV_MIGRATION_FAILED,
  HV_MIGRATION_CANCELLED,
  ])

HV_MIGRATION_FAILED_STATUSES = frozenset([
  HV_MIGRATION_FAILED,
  HV_MIGRATION_CANCELLED,
  ])

# KVM-specific statuses
HV_KVM_MIGRATION_VALID_STATUSES = HV_MIGRATION_VALID_STATUSES

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# Node info keys
HV_NODEINFO_KEY_VERSION = "hv_version"

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# Hypervisor state
HVST_MEMORY_TOTAL = "mem_total"
HVST_MEMORY_NODE = "mem_node"
HVST_MEMORY_HV = "mem_hv"
HVST_CPU_TOTAL = "cpu_total"
HVST_CPU_NODE = "cpu_node"

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HVST_DEFAULTS = {
  HVST_MEMORY_TOTAL: 0,
  HVST_MEMORY_NODE: 0,
  HVST_MEMORY_HV: 0,
  HVST_CPU_TOTAL: 1,
  HVST_CPU_NODE: 1,
  }

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HVSTS_PARAMETER_TYPES = {
  HVST_MEMORY_TOTAL: VTYPE_INT,
  HVST_MEMORY_NODE: VTYPE_INT,
  HVST_MEMORY_HV: VTYPE_INT,
  HVST_CPU_TOTAL: VTYPE_INT,
  HVST_CPU_NODE: VTYPE_INT,
  }

HVSTS_PARAMETERS = frozenset(HVSTS_PARAMETER_TYPES.keys())

# Disk state
DS_DISK_TOTAL = "disk_total"
DS_DISK_RESERVED = "disk_reserved"
DS_DISK_OVERHEAD = "disk_overhead"

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DS_DEFAULTS = {
  DS_DISK_TOTAL: 0,
  DS_DISK_RESERVED: 0,
  DS_DISK_OVERHEAD: 0,
  }

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DSS_PARAMETER_TYPES = {
  DS_DISK_TOTAL: VTYPE_INT,
  DS_DISK_RESERVED: VTYPE_INT,
  DS_DISK_OVERHEAD: VTYPE_INT,
  }

DSS_PARAMETERS = frozenset(DSS_PARAMETER_TYPES.keys())
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DS_VALID_TYPES = frozenset([LD_LV])
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# Backend parameter names
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BE_MEMORY = "memory" # deprecated and replaced by max and min mem
BE_MAXMEM = "maxmem"
BE_MINMEM = "minmem"
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BE_VCPUS = "vcpus"
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BE_AUTO_BALANCE = "auto_balance"
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BE_ALWAYS_FAILOVER = "always_failover"
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BE_SPINDLE_USE = "spindle_use"
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BES_PARAMETER_TYPES = {
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  BE_MAXMEM: VTYPE_SIZE,
  BE_MINMEM: VTYPE_SIZE,
  BE_VCPUS: VTYPE_INT,
  BE_AUTO_BALANCE: VTYPE_BOOL,
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  BE_ALWAYS_FAILOVER: VTYPE_BOOL,
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  BE_SPINDLE_USE: VTYPE_INT,
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  }
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BES_PARAMETER_TITLES = {
  BE_AUTO_BALANCE: "Auto_balance",
  BE_MAXMEM: "ConfigMaxMem",
  BE_MINMEM: "ConfigMinMem",
  BE_VCPUS: "ConfigVCPUs",
  }

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BES_PARAMETER_COMPAT = {
  BE_MEMORY: VTYPE_SIZE,
  }
BES_PARAMETER_COMPAT.update(BES_PARAMETER_TYPES)

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BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
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# instance specs
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ISPEC_MEM_SIZE = "memory-size"
ISPEC_CPU_COUNT = "cpu-count"
ISPEC_DISK_COUNT = "disk-count"
ISPEC_DISK_SIZE = "disk-size"
ISPEC_NIC_COUNT = "nic-count"
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ISPEC_SPINDLE_USE = "spindle-use"
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ISPECS_PARAMETER_TYPES = {
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  ISPEC_MEM_SIZE: VTYPE_INT,
  ISPEC_CPU_COUNT: VTYPE_INT,
  ISPEC_DISK_COUNT: VTYPE_INT,
  ISPEC_DISK_SIZE: VTYPE_INT,
  ISPEC_NIC_COUNT: VTYPE_INT,
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  ISPEC_SPINDLE_USE: VTYPE_INT,
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  }

ISPECS_PARAMETERS = frozenset(ISPECS_PARAMETER_TYPES.keys())

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ISPECS_MIN = "min"
ISPECS_MAX = "max"
ISPECS_STD = "std"
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IPOLICY_DTS = "disk-templates"
IPOLICY_VCPU_RATIO = "vcpu-ratio"
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IPOLICY_SPINDLE_RATIO = "spindle-ratio"
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IPOLICY_ISPECS = frozenset([
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  ISPECS_MIN,
  ISPECS_MAX,
  ISPECS_STD,
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  ])
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IPOLICY_PARAMETERS = frozenset([
  IPOLICY_VCPU_RATIO,
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  IPOLICY_SPINDLE_RATIO,
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  ])

IPOLICY_ALL_KEYS = (IPOLICY_ISPECS |
                    IPOLICY_PARAMETERS |
                    frozenset([IPOLICY_DTS]))
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# Node parameter names
ND_OOB_PROGRAM = "oob_program"
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ND_SPINDLE_COUNT = "spindle_count"
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NDS_PARAMETER_TYPES = {
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  ND_SPINDLE_COUNT: VTYPE_INT,
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  }
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NDS_PARAMETERS = frozenset(NDS_PARAMETER_TYPES.keys())

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NDS_PARAMETER_TITLES = {
  ND_OOB_PROGRAM: "OutOfBandProgram",
  ND_SPINDLE_COUNT: "SpindleCount",
  }

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# Logical Disks parameters
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LDP_RESYNC_RATE = "resync-rate"
LDP_STRIPES = "stripes"
LDP_BARRIERS = "disabled-barriers"
LDP_NO_META_FLUSH = "disable-meta-flush"
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LDP_DEFAULT_METAVG = "default-metavg"
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LDP_DISK_CUSTOM = "disk-custom"
LDP_NET_CUSTOM = "net-custom"
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LDP_DYNAMIC_RESYNC = "dynamic-resync"
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LDP_PLAN_AHEAD = "c-plan-ahead"
LDP_FILL_TARGET = "c-fill-target"
LDP_DELAY_TARGET = "c-delay-target"
LDP_MAX_RATE = "c-max-rate"
LDP_MIN_RATE = "c-min-rate"
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DISK_LD_TYPES = {
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  LDP_RESYNC_RATE: VTYPE_INT,
  LDP_STRIPES: VTYPE_INT,
  LDP_BARRIERS: VTYPE_STRING,
  LDP_NO_META_FLUSH: VTYPE_BOOL,
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  LDP_DEFAULT_METAVG: VTYPE_STRING,
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  LDP_DISK_CUSTOM: VTYPE_STRING,
  LDP_NET_CUSTOM: VTYPE_STRING,
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  LDP_DYNAMIC_RESYNC: VTYPE_BOOL,
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  LDP_PLAN_AHEAD: VTYPE_INT,
  LDP_FILL_TARGET: VTYPE_INT,
  LDP_DELAY_TARGET: VTYPE_INT,
  LDP_MAX_RATE: VTYPE_INT,
  LDP_MIN_RATE: VTYPE_INT,
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  LDP_POOL: VTYPE_STRING,
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  }
DISK_LD_PARAMETERS = frozenset(DISK_LD_TYPES.keys())

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# Disk template parameters (can be set/changed by the user via gnt-cluster and
# gnt-group)
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DRBD_RESYNC_RATE = "resync-rate"
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DRBD_DATA_STRIPES = "data-stripes"
DRBD_META_STRIPES = "meta-stripes"
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DRBD_DISK_BARRIERS = "disk-barriers"
DRBD_META_BARRIERS = "meta-barriers"
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DRBD_DEFAULT_METAVG = "metavg"
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DRBD_DISK_CUSTOM = "disk-custom"
DRBD_NET_CUSTOM = "net-custom"
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DRBD_DYNAMIC_RESYNC = "dynamic-resync"
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DRBD_PLAN_AHEAD = "c-plan-ahead"
DRBD_FILL_TARGET = "c-fill-target"
DRBD_DELAY_TARGET = "c-delay-target"
DRBD_MAX_RATE = "c-max-rate"
DRBD_MIN_RATE = "c-min-rate"
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LV_STRIPES = "stripes"
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RBD_POOL = "pool"
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DISK_DT_TYPES = {
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  DRBD_RESYNC_RATE: VTYPE_INT,
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  DRBD_DATA_STRIPES: VTYPE_INT,
  DRBD_META_STRIPES: VTYPE_INT,
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  DRBD_DISK_BARRIERS: VTYPE_STRING,
  DRBD_META_BARRIERS: VTYPE_BOOL,
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  DRBD_DEFAULT_METAVG: VTYPE_STRING,
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  DRBD_DISK_CUSTOM: VTYPE_STRING,
  DRBD_NET_CUSTOM: VTYPE_STRING,
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  DRBD_DYNAMIC_RESYNC: VTYPE_BOOL,
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  DRBD_PLAN_AHEAD: VTYPE_INT,
  DRBD_FILL_TARGET: VTYPE_INT,
  DRBD_DELAY_TARGET: VTYPE_INT,
  DRBD_MAX_RATE: VTYPE_INT,
  DRBD_MIN_RATE: VTYPE_INT,
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  LV_STRIPES: VTYPE_INT,
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  RBD_POOL: VTYPE_STRING,
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  }

DISK_DT_PARAMETERS = frozenset(DISK_DT_TYPES.keys())

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# OOB supported commands
OOB_POWER_ON = "power-on"
OOB_POWER_OFF = "power-off"
OOB_POWER_CYCLE = "power-cycle"
OOB_POWER_STATUS = "power-status"
OOB_HEALTH = "health"

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OOB_COMMANDS = frozenset([
  OOB_POWER_ON,
  OOB_POWER_OFF,
  OOB_POWER_CYCLE,
  OOB_POWER_STATUS,
  OOB_HEALTH
  ])
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OOB_POWER_STATUS_POWERED = "powered"

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OOB_TIMEOUT</