X-Git-Url: https://code.grnet.gr/git/ganeti-local/blobdiff_plain/75191077b11ab24e31e4b8e8d4504e0c6c12b8a4..784b6603e36bc7cd86c2712623cea2359f0ace91:/lib/constants.py

diff --git a/lib/constants.py b/lib/constants.py
index 47d2a0d..8092837 100644
--- a/lib/constants.py
+++ b/lib/constants.py
@@ -1,7 +1,7 @@
 #
 #
 
-# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Google Inc.
+# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Google Inc.
 #
 # 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
@@ -430,18 +430,20 @@ DT_DRBD8 = "drbd"
 DT_FILE = "file"
 DT_SHARED_FILE = "sharedfile"
 DT_BLOCK = "blockdev"
+DT_RBD = "rbd"
 
 # the set of network-mirrored disk templates
 DTS_INT_MIRROR = frozenset([DT_DRBD8])
 
 # the set of externally-mirrored disk templates (e.g. SAN, NAS)
-DTS_EXT_MIRROR = frozenset([DT_SHARED_FILE, DT_BLOCK])
+DTS_EXT_MIRROR = frozenset([DT_SHARED_FILE, DT_BLOCK, DT_RBD])
 
 # the set of non-lvm-based disk templates
-DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE, DT_SHARED_FILE, DT_BLOCK])
+DTS_NOT_LVM = frozenset([DT_DISKLESS, DT_FILE, DT_SHARED_FILE,
+                         DT_BLOCK, DT_RBD])
 
 # the set of disk templates which can be grown
-DTS_GROWABLE = frozenset([DT_PLAIN, DT_DRBD8, DT_FILE, DT_SHARED_FILE])
+DTS_GROWABLE = frozenset([DT_PLAIN, DT_DRBD8, DT_FILE, DT_SHARED_FILE, DT_RBD])
 
 # the set of disk templates that allow adoption
 DTS_MAY_ADOPT = frozenset([DT_PLAIN, DT_BLOCK])
@@ -460,12 +462,42 @@ LD_LV = "lvm"
 LD_DRBD8 = "drbd8"
 LD_FILE = "file"
 LD_BLOCKDEV = "blockdev"
-LDS_BLOCK = frozenset([LD_LV, LD_DRBD8, LD_BLOCKDEV])
+LD_RBD = "rbd"
+LOGICAL_DISK_TYPES = frozenset([
+  LD_LV,
+  LD_DRBD8,
+  LD_FILE,
+  LD_BLOCKDEV,
+  LD_RBD,
+  ])
+
+LDS_BLOCK = frozenset([LD_LV, LD_DRBD8, LD_BLOCKDEV, LD_RBD])
 
 # drbd constants
 DRBD_HMAC_ALG = "md5"
 DRBD_NET_PROTOCOL = "C"
-DRBD_BARRIERS = _autoconf.DRBD_BARRIERS
+
+# 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]),
+  ])
+
+# rbd tool command
+RBD_CMD = "rbd"
 
 # file backend driver
 FD_LOOP = "loop"
@@ -546,7 +578,8 @@ DISK_TEMPLATES = frozenset([
   DT_DRBD8,
   DT_FILE,
   DT_SHARED_FILE,
-  DT_BLOCK
+  DT_BLOCK,
+  DT_RBD
   ])
 
 FILE_DRIVER = frozenset([FD_LOOP, FD_BLKTAP])
@@ -590,7 +623,7 @@ MAX_TAGS_PER_OBJ = 4096
 
 # others
 DEFAULT_BRIDGE = "xen-br0"
-SYNC_SPEED = 60 * 1024
+CLASSIC_DRBD_SYNC_SPEED = 60 * 1024  # 60 MiB, expressed in KiB
 IP4_ADDRESS_LOCALHOST = "127.0.0.1"
 IP4_ADDRESS_ANY = "0.0.0.0"
 IP6_ADDRESS_LOCALHOST = "::1"
@@ -604,7 +637,6 @@ DEFAULT_VG = "xenvg"
 DEFAULT_DRBD_HELPER = "/bin/true"
 MIN_VG_SIZE = 20480
 DEFAULT_MAC_PREFIX = "aa:00:00"
-LVM_STRIPECOUNT = _autoconf.LVM_STRIPECOUNT
 # default maximum instance wait time, in seconds.
 DEFAULT_SHUTDOWN_TIMEOUT = 120
 NODE_MAX_CLOCK_SKEW = 150
@@ -836,6 +868,14 @@ HVST_MEMORY_HV = "mem_hv"
 HVST_CPU_TOTAL = "cpu_total"
 HVST_CPU_NODE = "cpu_node"
 
+HVST_DEFAULTS = {
+  HVST_MEMORY_TOTAL: 0,
+  HVST_MEMORY_NODE: 0,
+  HVST_MEMORY_HV: 0,
+  HVST_CPU_TOTAL: 1,
+  HVST_CPU_NODE: 1,
+  }
+
 HVSTS_PARAMETER_TYPES = {
   HVST_MEMORY_TOTAL: VTYPE_INT,
   HVST_MEMORY_NODE: VTYPE_INT,
@@ -851,6 +891,12 @@ DS_DISK_TOTAL = "disk_total"
 DS_DISK_RESERVED = "disk_reserved"
 DS_DISK_OVERHEAD = "disk_overhead"
 
+DS_DEFAULTS = {
+  DS_DISK_TOTAL: 0,
+  DS_DISK_RESERVED: 0,
+  DS_DISK_OVERHEAD: 0,
+  }
+
 DSS_PARAMETER_TYPES = {
   DS_DISK_TOTAL: VTYPE_INT,
   DS_DISK_RESERVED: VTYPE_INT,
@@ -858,6 +904,7 @@ DSS_PARAMETER_TYPES = {
   }
 
 DSS_PARAMETERS = frozenset(DSS_PARAMETER_TYPES.keys())
+DS_VALID_TYPES = frozenset([LD_LV])
 
 # Backend parameter names
 BE_MEMORY = "memory" # deprecated and replaced by max and min mem
@@ -865,12 +912,14 @@ BE_MAXMEM = "maxmem"
 BE_MINMEM = "minmem"
 BE_VCPUS = "vcpus"
 BE_AUTO_BALANCE = "auto_balance"
+BE_ALWAYS_FAILOVER = "always_failover"
 
 BES_PARAMETER_TYPES = {
   BE_MAXMEM: VTYPE_SIZE,
   BE_MINMEM: VTYPE_SIZE,
   BE_VCPUS: VTYPE_INT,
   BE_AUTO_BALANCE: VTYPE_BOOL,
+  BE_ALWAYS_FAILOVER: VTYPE_BOOL,
   }
 
 BES_PARAMETER_COMPAT = {
@@ -880,6 +929,43 @@ BES_PARAMETER_COMPAT.update(BES_PARAMETER_TYPES)
 
 BES_PARAMETERS = frozenset(BES_PARAMETER_TYPES.keys())
 
+# instance specs
+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"
+
+ISPECS_PARAMETER_TYPES = {
+  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,
+  }
+
+ISPECS_PARAMETERS = frozenset(ISPECS_PARAMETER_TYPES.keys())
+
+ISPECS_MIN = "min"
+ISPECS_MAX = "max"
+ISPECS_STD = "std"
+IPOLICY_DTS = "disk-templates"
+IPOLICY_VCPU_RATIO = "vcpu-ratio"
+
+IPOLICY_ISPECS = frozenset([
+  ISPECS_MIN,
+  ISPECS_MAX,
+  ISPECS_STD,
+  ])
+
+IPOLICY_PARAMETERS = frozenset([
+  IPOLICY_VCPU_RATIO,
+  ])
+
+IPOLICY_ALL_KEYS = (IPOLICY_ISPECS |
+                    IPOLICY_PARAMETERS |
+                    frozenset([IPOLICY_DTS]))
+
 # Node parameter names
 ND_OOB_PROGRAM = "oob_program"
 
@@ -889,6 +975,78 @@ NDS_PARAMETER_TYPES = {
 
 NDS_PARAMETERS = frozenset(NDS_PARAMETER_TYPES.keys())
 
+# Logical Disks parameters
+LDP_RESYNC_RATE = "resync-rate"
+LDP_STRIPES = "stripes"
+LDP_BARRIERS = "disabled-barriers"
+LDP_NO_META_FLUSH = "disable-meta-flush"
+LDP_DEFAULT_METAVG = "default-metavg"
+LDP_DISK_CUSTOM = "disk-custom"
+LDP_NET_CUSTOM = "net-custom"
+LDP_DYNAMIC_RESYNC = "dynamic-resync"
+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"
+LDP_POOL = "pool"
+DISK_LD_TYPES = {
+  LDP_RESYNC_RATE: VTYPE_INT,
+  LDP_STRIPES: VTYPE_INT,
+  LDP_BARRIERS: VTYPE_STRING,
+  LDP_NO_META_FLUSH: VTYPE_BOOL,
+  LDP_DEFAULT_METAVG: VTYPE_STRING,
+  LDP_DISK_CUSTOM: VTYPE_STRING,
+  LDP_NET_CUSTOM: VTYPE_STRING,
+  LDP_DYNAMIC_RESYNC: VTYPE_BOOL,
+  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,
+  LDP_POOL: VTYPE_STRING,
+  }
+DISK_LD_PARAMETERS = frozenset(DISK_LD_TYPES.keys())
+
+# Disk template parameters (can be set/changed by the user via gnt-cluster and
+# gnt-group)
+DRBD_RESYNC_RATE = "resync-rate"
+DRBD_DATA_STRIPES = "data-stripes"
+DRBD_META_STRIPES = "meta-stripes"
+DRBD_DISK_BARRIERS = "disk-barriers"
+DRBD_META_BARRIERS = "meta-barriers"
+DRBD_DEFAULT_METAVG = "metavg"
+DRBD_DISK_CUSTOM = "disk-custom"
+DRBD_NET_CUSTOM = "net-custom"
+DRBD_DYNAMIC_RESYNC = "dynamic-resync"
+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"
+LV_STRIPES = "stripes"
+RBD_POOL = "pool"
+DISK_DT_TYPES = {
+  DRBD_RESYNC_RATE: VTYPE_INT,
+  DRBD_DATA_STRIPES: VTYPE_INT,
+  DRBD_META_STRIPES: VTYPE_INT,
+  DRBD_DISK_BARRIERS: VTYPE_STRING,
+  DRBD_META_BARRIERS: VTYPE_BOOL,
+  DRBD_DEFAULT_METAVG: VTYPE_STRING,
+  DRBD_DISK_CUSTOM: VTYPE_STRING,
+  DRBD_NET_CUSTOM: VTYPE_STRING,
+  DRBD_DYNAMIC_RESYNC: VTYPE_BOOL,
+  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,
+  LV_STRIPES: VTYPE_INT,
+  RBD_POOL: VTYPE_STRING,
+  }
+
+DISK_DT_PARAMETERS = frozenset(DISK_DT_TYPES.keys())
+
 # OOB supported commands
 OOB_POWER_ON = "power-on"
 OOB_POWER_OFF = "power-off"
@@ -1165,6 +1323,9 @@ CV_EINSTANCEWRONGNODE = \
 CV_EINSTANCESPLITGROUPS = \
   (CV_TINSTANCE, "EINSTANCESPLITGROUPS",
    "Instance with primary and secondary nodes in different groups")
+CV_EINSTANCEPOLICY = \
+  (CV_TINSTANCE, "EINSTANCEPOLICY",
+   "Instance does not meet policy")
 CV_ENODEDRBD = \
   (CV_TNODE, "ENODEDRBD", "Error parsing the DRBD status file")
 CV_ENODEDRBDHELPER = \
@@ -1218,6 +1379,7 @@ CV_ALL_ECODES = frozenset([
   CV_EINSTANCEFAULTYDISK,
   CV_EINSTANCEWRONGNODE,
   CV_EINSTANCESPLITGROUPS,
+  CV_EINSTANCEPOLICY,
   CV_ENODEDRBD,
   CV_ENODEDRBDHELPER,
   CV_ENODEFILECHECK,
@@ -1645,17 +1807,117 @@ BEC_DEFAULTS = {
   BE_MAXMEM: 128,
   BE_VCPUS: 1,
   BE_AUTO_BALANCE: True,
+  BE_ALWAYS_FAILOVER: False,
   }
 
 NDC_DEFAULTS = {
   ND_OOB_PROGRAM: None,
   }
 
+DISK_LD_DEFAULTS = {
+  LD_DRBD8: {
+    LDP_RESYNC_RATE: CLASSIC_DRBD_SYNC_SPEED,
+    LDP_BARRIERS: _autoconf.DRBD_BARRIERS,
+    LDP_NO_META_FLUSH: _autoconf.DRBD_NO_META_FLUSH,
+    LDP_DEFAULT_METAVG: DEFAULT_VG,
+    LDP_DISK_CUSTOM: "",
+    LDP_NET_CUSTOM: "",
+    LDP_DYNAMIC_RESYNC: False,
+
+    # The default values for the DRBD dynamic resync speed algorithm are taken
+    # from the drbsetup 8.3.11 man page, except for c-plan-ahead (that we
+    # don't need to set to 0, because we have a separate option to enable it)
+    # and for c-max-rate, that we cap to the default value for the static resync
+    # rate.
+    LDP_PLAN_AHEAD: 20, # ds
+    LDP_FILL_TARGET: 0, # sectors
+    LDP_DELAY_TARGET: 1, # ds
+    LDP_MAX_RATE: CLASSIC_DRBD_SYNC_SPEED, # KiB/s
+    LDP_MIN_RATE: 4 * 1024, # KiB/s
+    },
+  LD_LV: {
+    LDP_STRIPES: _autoconf.LVM_STRIPECOUNT
+    },
+  LD_FILE: {
+    },
+  LD_BLOCKDEV: {
+    },
+  LD_RBD: {
+    LDP_POOL: "rbd"
+    },
+  }
+
+# readability shortcuts
+_LV_DEFAULTS = DISK_LD_DEFAULTS[LD_LV]
+_DRBD_DEFAULTS = DISK_LD_DEFAULTS[LD_DRBD8]
+
+DISK_DT_DEFAULTS = {
+  DT_PLAIN: {
+    LV_STRIPES: DISK_LD_DEFAULTS[LD_LV][LDP_STRIPES],
+    },
+  DT_DRBD8: {
+    DRBD_RESYNC_RATE: _DRBD_DEFAULTS[LDP_RESYNC_RATE],
+    DRBD_DATA_STRIPES: _LV_DEFAULTS[LDP_STRIPES],
+    DRBD_META_STRIPES: _LV_DEFAULTS[LDP_STRIPES],
+    DRBD_DISK_BARRIERS: _DRBD_DEFAULTS[LDP_BARRIERS],
+    DRBD_META_BARRIERS: _DRBD_DEFAULTS[LDP_NO_META_FLUSH],
+    DRBD_DEFAULT_METAVG: _DRBD_DEFAULTS[LDP_DEFAULT_METAVG],
+    DRBD_DISK_CUSTOM: _DRBD_DEFAULTS[LDP_DISK_CUSTOM],
+    DRBD_NET_CUSTOM: _DRBD_DEFAULTS[LDP_NET_CUSTOM],
+    DRBD_DYNAMIC_RESYNC: _DRBD_DEFAULTS[LDP_DYNAMIC_RESYNC],
+    DRBD_PLAN_AHEAD: _DRBD_DEFAULTS[LDP_PLAN_AHEAD],
+    DRBD_FILL_TARGET: _DRBD_DEFAULTS[LDP_FILL_TARGET],
+    DRBD_DELAY_TARGET: _DRBD_DEFAULTS[LDP_DELAY_TARGET],
+    DRBD_MAX_RATE: _DRBD_DEFAULTS[LDP_MAX_RATE],
+    DRBD_MIN_RATE: _DRBD_DEFAULTS[LDP_MIN_RATE],
+    },
+  DT_DISKLESS: {
+    },
+  DT_FILE: {
+    },
+  DT_SHARED_FILE: {
+    },
+  DT_BLOCK: {
+    },
+  DT_RBD: {
+    RBD_POOL: DISK_LD_DEFAULTS[LD_RBD][LDP_POOL]
+    },
+  }
+
+# we don't want to export the shortcuts
+del _LV_DEFAULTS, _DRBD_DEFAULTS
+
 NICC_DEFAULTS = {
   NIC_MODE: NIC_MODE_BRIDGED,
   NIC_LINK: DEFAULT_BRIDGE,
   }
 
+IPOLICY_DEFAULTS = {
+  ISPECS_MIN: {
+    ISPEC_MEM_SIZE: 128,
+    ISPEC_CPU_COUNT: 1,
+    ISPEC_DISK_COUNT: 1,
+    ISPEC_DISK_SIZE: 1024,
+    ISPEC_NIC_COUNT: 1,
+    },
+  ISPECS_MAX: {
+    ISPEC_MEM_SIZE: 32768,
+    ISPEC_CPU_COUNT: 8,
+    ISPEC_DISK_COUNT: MAX_DISKS,
+    ISPEC_DISK_SIZE: 1024 * 1024,
+    ISPEC_NIC_COUNT: MAX_NICS,
+    },
+  ISPECS_STD: {
+    ISPEC_MEM_SIZE: 128,
+    ISPEC_CPU_COUNT: 1,
+    ISPEC_DISK_COUNT: 1,
+    ISPEC_DISK_SIZE: 1024,
+    ISPEC_NIC_COUNT: 1,
+    },
+  IPOLICY_DTS: DISK_TEMPLATES,
+  IPOLICY_VCPU_RATIO: 4.0,
+  }
+
 MASTER_POOL_SIZE_DEFAULT = 10
 
 CONFD_PROTOCOL_VERSION = 1