root / lib / hypervisor / hv_kvm.py @ 7be85163
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1 | eb58f9b1 | Guido Trotter | #
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2 | eb58f9b1 | Guido Trotter | #
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3 | eb58f9b1 | Guido Trotter | |
4 | 783a6c0b | Iustin Pop | # Copyright (C) 2008, 2009, 2010 Google Inc.
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5 | eb58f9b1 | Guido Trotter | #
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6 | eb58f9b1 | Guido Trotter | # This program is free software; you can redistribute it and/or modify
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7 | eb58f9b1 | Guido Trotter | # it under the terms of the GNU General Public License as published by
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8 | eb58f9b1 | Guido Trotter | # the Free Software Foundation; either version 2 of the License, or
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9 | eb58f9b1 | Guido Trotter | # (at your option) any later version.
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10 | eb58f9b1 | Guido Trotter | #
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11 | eb58f9b1 | Guido Trotter | # This program is distributed in the hope that it will be useful, but
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12 | eb58f9b1 | Guido Trotter | # WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | eb58f9b1 | Guido Trotter | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | eb58f9b1 | Guido Trotter | # General Public License for more details.
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15 | eb58f9b1 | Guido Trotter | #
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16 | eb58f9b1 | Guido Trotter | # You should have received a copy of the GNU General Public License
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17 | eb58f9b1 | Guido Trotter | # along with this program; if not, write to the Free Software
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18 | eb58f9b1 | Guido Trotter | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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19 | eb58f9b1 | Guido Trotter | # 02110-1301, USA.
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20 | eb58f9b1 | Guido Trotter | |
21 | eb58f9b1 | Guido Trotter | |
22 | eb58f9b1 | Guido Trotter | """KVM hypervisor
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23 | eb58f9b1 | Guido Trotter |
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24 | eb58f9b1 | Guido Trotter | """
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25 | eb58f9b1 | Guido Trotter | |
26 | 547a63b7 | Balazs Lecz | import errno |
27 | eb58f9b1 | Guido Trotter | import os |
28 | eb58f9b1 | Guido Trotter | import os.path |
29 | eb58f9b1 | Guido Trotter | import re |
30 | eb58f9b1 | Guido Trotter | import tempfile |
31 | 6567aff3 | Guido Trotter | import time |
32 | 30e42c4e | Guido Trotter | import logging |
33 | d19d94db | Guido Trotter | import pwd |
34 | 199b2053 | Apollon Oikonomopoulos | import struct |
35 | 199b2053 | Apollon Oikonomopoulos | import fcntl |
36 | 5d9bfd87 | Apollon Oikonomopoulos | import shutil |
37 | eb58f9b1 | Guido Trotter | |
38 | eb58f9b1 | Guido Trotter | from ganeti import utils |
39 | eb58f9b1 | Guido Trotter | from ganeti import constants |
40 | eb58f9b1 | Guido Trotter | from ganeti import errors |
41 | 38e250ba | Guido Trotter | from ganeti import serializer |
42 | 38e250ba | Guido Trotter | from ganeti import objects |
43 | 76431533 | Guido Trotter | from ganeti import uidpool |
44 | 76431533 | Guido Trotter | from ganeti import ssconf |
45 | eb58f9b1 | Guido Trotter | from ganeti.hypervisor import hv_base |
46 | a744b676 | Manuel Franceschini | from ganeti import netutils |
47 | 5d9bfd87 | Apollon Oikonomopoulos | from ganeti.utils import wrapper as utils_wrapper |
48 | eb58f9b1 | Guido Trotter | |
49 | eb58f9b1 | Guido Trotter | |
50 | 748e4b5a | Michael Hanselmann | _KVM_NETWORK_SCRIPT = constants.SYSCONFDIR + "/ganeti/kvm-vif-bridge"
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51 | 748e4b5a | Michael Hanselmann | |
52 | 199b2053 | Apollon Oikonomopoulos | # TUN/TAP driver constants, taken from <linux/if_tun.h>
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53 | 199b2053 | Apollon Oikonomopoulos | # They are architecture-independent and already hardcoded in qemu-kvm source,
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54 | 199b2053 | Apollon Oikonomopoulos | # so we can safely include them here.
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55 | 199b2053 | Apollon Oikonomopoulos | TUNSETIFF = 0x400454ca
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56 | 199b2053 | Apollon Oikonomopoulos | TUNGETIFF = 0x800454d2
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57 | 199b2053 | Apollon Oikonomopoulos | TUNGETFEATURES = 0x800454cf
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58 | 199b2053 | Apollon Oikonomopoulos | IFF_TAP = 0x0002
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59 | 199b2053 | Apollon Oikonomopoulos | IFF_NO_PI = 0x1000
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60 | 199b2053 | Apollon Oikonomopoulos | IFF_VNET_HDR = 0x4000
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61 | 199b2053 | Apollon Oikonomopoulos | |
62 | 199b2053 | Apollon Oikonomopoulos | |
63 | 199b2053 | Apollon Oikonomopoulos | def _ProbeTapVnetHdr(fd): |
64 | 199b2053 | Apollon Oikonomopoulos | """Check whether to enable the IFF_VNET_HDR flag.
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65 | 199b2053 | Apollon Oikonomopoulos |
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66 | 199b2053 | Apollon Oikonomopoulos | To do this, _all_ of the following conditions must be met:
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67 | 199b2053 | Apollon Oikonomopoulos | 1. TUNGETFEATURES ioctl() *must* be implemented
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68 | 199b2053 | Apollon Oikonomopoulos | 2. TUNGETFEATURES ioctl() result *must* contain the IFF_VNET_HDR flag
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69 | 199b2053 | Apollon Oikonomopoulos | 3. TUNGETIFF ioctl() *must* be implemented; reading the kernel code in
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70 | 199b2053 | Apollon Oikonomopoulos | drivers/net/tun.c there is no way to test this until after the tap device
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71 | 199b2053 | Apollon Oikonomopoulos | has been created using TUNSETIFF, and there is no way to change the
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72 | 199b2053 | Apollon Oikonomopoulos | IFF_VNET_HDR flag after creating the interface, catch-22! However both
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73 | 199b2053 | Apollon Oikonomopoulos | TUNGETIFF and TUNGETFEATURES were introduced in kernel version 2.6.27,
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74 | 199b2053 | Apollon Oikonomopoulos | thus we can expect TUNGETIFF to be present if TUNGETFEATURES is.
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75 | 199b2053 | Apollon Oikonomopoulos |
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76 | 199b2053 | Apollon Oikonomopoulos | @type fd: int
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77 | 199b2053 | Apollon Oikonomopoulos | @param fd: the file descriptor of /dev/net/tun
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78 | 199b2053 | Apollon Oikonomopoulos |
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79 | 199b2053 | Apollon Oikonomopoulos | """
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80 | 199b2053 | Apollon Oikonomopoulos | req = struct.pack("I", 0) |
81 | 199b2053 | Apollon Oikonomopoulos | try:
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82 | 199b2053 | Apollon Oikonomopoulos | res = fcntl.ioctl(fd, TUNGETFEATURES, req) |
83 | 199b2053 | Apollon Oikonomopoulos | except EnvironmentError: |
84 | 199b2053 | Apollon Oikonomopoulos | logging.warning("TUNGETFEATURES ioctl() not implemented")
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85 | 199b2053 | Apollon Oikonomopoulos | return False |
86 | 199b2053 | Apollon Oikonomopoulos | |
87 | 199b2053 | Apollon Oikonomopoulos | tunflags = struct.unpack("I", res)[0] |
88 | 199b2053 | Apollon Oikonomopoulos | if tunflags & IFF_VNET_HDR:
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89 | 199b2053 | Apollon Oikonomopoulos | return True |
90 | 199b2053 | Apollon Oikonomopoulos | else:
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91 | 199b2053 | Apollon Oikonomopoulos | logging.warning("Host does not support IFF_VNET_HDR, not enabling")
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92 | 199b2053 | Apollon Oikonomopoulos | return False |
93 | 199b2053 | Apollon Oikonomopoulos | |
94 | 199b2053 | Apollon Oikonomopoulos | |
95 | 199b2053 | Apollon Oikonomopoulos | def _OpenTap(vnet_hdr=True): |
96 | 199b2053 | Apollon Oikonomopoulos | """Open a new tap device and return its file descriptor.
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97 | 199b2053 | Apollon Oikonomopoulos |
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98 | 199b2053 | Apollon Oikonomopoulos | This is intended to be used by a qemu-type hypervisor together with the -net
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99 | 199b2053 | Apollon Oikonomopoulos | tap,fd=<fd> command line parameter.
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100 | 199b2053 | Apollon Oikonomopoulos |
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101 | 199b2053 | Apollon Oikonomopoulos | @type vnet_hdr: boolean
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102 | 199b2053 | Apollon Oikonomopoulos | @param vnet_hdr: Enable the VNET Header
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103 | 199b2053 | Apollon Oikonomopoulos | @return: (ifname, tapfd)
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104 | 199b2053 | Apollon Oikonomopoulos | @rtype: tuple
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105 | 199b2053 | Apollon Oikonomopoulos |
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106 | 199b2053 | Apollon Oikonomopoulos | """
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107 | 199b2053 | Apollon Oikonomopoulos | try:
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108 | 199b2053 | Apollon Oikonomopoulos | tapfd = os.open("/dev/net/tun", os.O_RDWR)
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109 | 199b2053 | Apollon Oikonomopoulos | except EnvironmentError: |
110 | 199b2053 | Apollon Oikonomopoulos | raise errors.HypervisorError("Failed to open /dev/net/tun") |
111 | 199b2053 | Apollon Oikonomopoulos | |
112 | 199b2053 | Apollon Oikonomopoulos | flags = IFF_TAP | IFF_NO_PI |
113 | 199b2053 | Apollon Oikonomopoulos | |
114 | 199b2053 | Apollon Oikonomopoulos | if vnet_hdr and _ProbeTapVnetHdr(tapfd): |
115 | 199b2053 | Apollon Oikonomopoulos | flags |= IFF_VNET_HDR |
116 | 199b2053 | Apollon Oikonomopoulos | |
117 | 199b2053 | Apollon Oikonomopoulos | # The struct ifreq ioctl request (see netdevice(7))
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118 | 199b2053 | Apollon Oikonomopoulos | ifr = struct.pack("16sh", "", flags) |
119 | 199b2053 | Apollon Oikonomopoulos | |
120 | 199b2053 | Apollon Oikonomopoulos | try:
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121 | 199b2053 | Apollon Oikonomopoulos | res = fcntl.ioctl(tapfd, TUNSETIFF, ifr) |
122 | 199b2053 | Apollon Oikonomopoulos | except EnvironmentError: |
123 | 199b2053 | Apollon Oikonomopoulos | raise errors.HypervisorError("Failed to allocate a new TAP device") |
124 | 199b2053 | Apollon Oikonomopoulos | |
125 | 199b2053 | Apollon Oikonomopoulos | # Get the interface name from the ioctl
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126 | 199b2053 | Apollon Oikonomopoulos | ifname = struct.unpack("16sh", res)[0].strip("\x00") |
127 | 199b2053 | Apollon Oikonomopoulos | return (ifname, tapfd)
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128 | 199b2053 | Apollon Oikonomopoulos | |
129 | 748e4b5a | Michael Hanselmann | |
130 | eb58f9b1 | Guido Trotter | class KVMHypervisor(hv_base.BaseHypervisor): |
131 | c4469f75 | Guido Trotter | """KVM hypervisor interface"""
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132 | d271c6fd | Iustin Pop | CAN_MIGRATE = True
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133 | eb58f9b1 | Guido Trotter | |
134 | eb58f9b1 | Guido Trotter | _ROOT_DIR = constants.RUN_GANETI_DIR + "/kvm-hypervisor"
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135 | a1d79fc6 | Guido Trotter | _PIDS_DIR = _ROOT_DIR + "/pid" # contains live instances pids |
136 | 7548396c | Guido Trotter | _UIDS_DIR = _ROOT_DIR + "/uid" # contains instances reserved uids |
137 | a1d79fc6 | Guido Trotter | _CTRL_DIR = _ROOT_DIR + "/ctrl" # contains instances control sockets |
138 | a1d79fc6 | Guido Trotter | _CONF_DIR = _ROOT_DIR + "/conf" # contains instances startup data |
139 | 5d9bfd87 | Apollon Oikonomopoulos | _NICS_DIR = _ROOT_DIR + "/nic" # contains instances nic <-> tap associations |
140 | 547a63b7 | Balazs Lecz | # KVM instances with chroot enabled are started in empty chroot directories.
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141 | 547a63b7 | Balazs Lecz | _CHROOT_DIR = _ROOT_DIR + "/chroot" # for empty chroot directories |
142 | 547a63b7 | Balazs Lecz | # After an instance is stopped, its chroot directory is removed.
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143 | 547a63b7 | Balazs Lecz | # If the chroot directory is not empty, it can't be removed.
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144 | 547a63b7 | Balazs Lecz | # A non-empty chroot directory indicates a possible security incident.
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145 | 547a63b7 | Balazs Lecz | # To support forensics, the non-empty chroot directory is quarantined in
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146 | 547a63b7 | Balazs Lecz | # a separate directory, called 'chroot-quarantine'.
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147 | 547a63b7 | Balazs Lecz | _CHROOT_QUARANTINE_DIR = _ROOT_DIR + "/chroot-quarantine"
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148 | 5d9bfd87 | Apollon Oikonomopoulos | _DIRS = [_ROOT_DIR, _PIDS_DIR, _UIDS_DIR, _CTRL_DIR, _CONF_DIR, _NICS_DIR, |
149 | 547a63b7 | Balazs Lecz | _CHROOT_DIR, _CHROOT_QUARANTINE_DIR] |
150 | eb58f9b1 | Guido Trotter | |
151 | 205ab586 | Iustin Pop | PARAMETERS = { |
152 | 205ab586 | Iustin Pop | constants.HV_KERNEL_PATH: hv_base.OPT_FILE_CHECK, |
153 | 205ab586 | Iustin Pop | constants.HV_INITRD_PATH: hv_base.OPT_FILE_CHECK, |
154 | 205ab586 | Iustin Pop | constants.HV_ROOT_PATH: hv_base.NO_CHECK, |
155 | 205ab586 | Iustin Pop | constants.HV_KERNEL_ARGS: hv_base.NO_CHECK, |
156 | 205ab586 | Iustin Pop | constants.HV_ACPI: hv_base.NO_CHECK, |
157 | 205ab586 | Iustin Pop | constants.HV_SERIAL_CONSOLE: hv_base.NO_CHECK, |
158 | d73ef63f | Michael Hanselmann | constants.HV_VNC_BIND_ADDRESS: |
159 | 8b312c1d | Manuel Franceschini | (False, lambda x: (netutils.IP4Address.IsValid(x) or |
160 | 8b312c1d | Manuel Franceschini | utils.IsNormAbsPath(x)), |
161 | d73ef63f | Michael Hanselmann | "the VNC bind address must be either a valid IP address or an absolute"
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162 | d73ef63f | Michael Hanselmann | " pathname", None, None), |
163 | 205ab586 | Iustin Pop | constants.HV_VNC_TLS: hv_base.NO_CHECK, |
164 | 205ab586 | Iustin Pop | constants.HV_VNC_X509: hv_base.OPT_DIR_CHECK, |
165 | 205ab586 | Iustin Pop | constants.HV_VNC_X509_VERIFY: hv_base.NO_CHECK, |
166 | 6e6bb8d5 | Guido Trotter | constants.HV_VNC_PASSWORD_FILE: hv_base.OPT_FILE_CHECK, |
167 | 205ab586 | Iustin Pop | constants.HV_CDROM_IMAGE_PATH: hv_base.OPT_FILE_CHECK, |
168 | d73ef63f | Michael Hanselmann | constants.HV_BOOT_ORDER: |
169 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_BO_TYPES),
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170 | d73ef63f | Michael Hanselmann | constants.HV_NIC_TYPE: |
171 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_NIC_TYPES),
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172 | d73ef63f | Michael Hanselmann | constants.HV_DISK_TYPE: |
173 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(True, constants.HT_KVM_VALID_DISK_TYPES),
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174 | d73ef63f | Michael Hanselmann | constants.HV_USB_MOUSE: |
175 | d73ef63f | Michael Hanselmann | hv_base.ParamInSet(False, constants.HT_KVM_VALID_MOUSE_TYPES),
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176 | 78411c60 | Iustin Pop | constants.HV_MIGRATION_PORT: hv_base.NET_PORT_CHECK, |
177 | e43d4f9f | Apollon Oikonomopoulos | constants.HV_MIGRATION_BANDWIDTH: hv_base.NO_CHECK, |
178 | e43d4f9f | Apollon Oikonomopoulos | constants.HV_MIGRATION_DOWNTIME: hv_base.NO_CHECK, |
179 | 783a6c0b | Iustin Pop | constants.HV_MIGRATION_MODE: hv_base.MIGRATION_MODE_CHECK, |
180 | 6b970cef | Jun Futagawa | constants.HV_USE_LOCALTIME: hv_base.NO_CHECK, |
181 | 19572932 | Iustin Pop | constants.HV_DISK_CACHE: |
182 | 19572932 | Iustin Pop | hv_base.ParamInSet(True, constants.HT_VALID_CACHE_TYPES),
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183 | d19d94db | Guido Trotter | constants.HV_SECURITY_MODEL: |
184 | d19d94db | Guido Trotter | hv_base.ParamInSet(True, constants.HT_KVM_VALID_SM_TYPES),
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185 | d19d94db | Guido Trotter | constants.HV_SECURITY_DOMAIN: hv_base.NO_CHECK, |
186 | 7ba594c0 | Guido Trotter | constants.HV_KVM_FLAG: |
187 | 7ba594c0 | Guido Trotter | hv_base.ParamInSet(False, constants.HT_KVM_FLAG_VALUES),
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188 | fbe27e2b | Guido Trotter | constants.HV_VHOST_NET: hv_base.NO_CHECK, |
189 | 547a63b7 | Balazs Lecz | constants.HV_KVM_USE_CHROOT: hv_base.NO_CHECK, |
190 | 4f958b0b | Miguel Di Ciurcio Filho | constants.HV_MEM_PATH: hv_base.OPT_DIR_CHECK, |
191 | 205ab586 | Iustin Pop | } |
192 | 6b5605e8 | Iustin Pop | |
193 | 30e42c4e | Guido Trotter | _MIGRATION_STATUS_RE = re.compile('Migration\s+status:\s+(\w+)',
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194 | 30e42c4e | Guido Trotter | re.M | re.I) |
195 | c4e388a5 | Guido Trotter | _MIGRATION_INFO_MAX_BAD_ANSWERS = 5
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196 | c4e388a5 | Guido Trotter | _MIGRATION_INFO_RETRY_DELAY = 2
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197 | 30e42c4e | Guido Trotter | |
198 | b52d85c1 | Guido Trotter | _VERSION_RE = re.compile(r"\b(\d+)\.(\d+)\.(\d+)\b")
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199 | b52d85c1 | Guido Trotter | |
200 | 64bfbc08 | Guido Trotter | ANCILLARY_FILES = [ |
201 | 64bfbc08 | Guido Trotter | _KVM_NETWORK_SCRIPT, |
202 | 64bfbc08 | Guido Trotter | ] |
203 | 64bfbc08 | Guido Trotter | |
204 | eb58f9b1 | Guido Trotter | def __init__(self): |
205 | eb58f9b1 | Guido Trotter | hv_base.BaseHypervisor.__init__(self)
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206 | eb58f9b1 | Guido Trotter | # Let's make sure the directories we need exist, even if the RUN_DIR lives
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207 | eb58f9b1 | Guido Trotter | # in a tmpfs filesystem or has been otherwise wiped out.
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208 | 29921401 | Iustin Pop | dirs = [(dname, constants.RUN_DIRS_MODE) for dname in self._DIRS] |
209 | 9afb67fe | Guido Trotter | utils.EnsureDirs(dirs) |
210 | eb58f9b1 | Guido Trotter | |
211 | 30786fc9 | Iustin Pop | @classmethod
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212 | 30786fc9 | Iustin Pop | def _InstancePidFile(cls, instance_name): |
213 | 98ec75d6 | Iustin Pop | """Returns the instance pidfile.
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214 | 98ec75d6 | Iustin Pop |
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215 | 98ec75d6 | Iustin Pop | """
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216 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._PIDS_DIR, instance_name)
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217 | 98ec75d6 | Iustin Pop | |
218 | 263b8de6 | Guido Trotter | @classmethod
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219 | 7548396c | Guido Trotter | def _InstanceUidFile(cls, instance_name): |
220 | 7548396c | Guido Trotter | """Returns the instance uidfile.
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221 | 7548396c | Guido Trotter |
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222 | 7548396c | Guido Trotter | """
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223 | 7548396c | Guido Trotter | return utils.PathJoin(cls._UIDS_DIR, instance_name)
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224 | 7548396c | Guido Trotter | |
225 | 7548396c | Guido Trotter | @classmethod
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226 | 263b8de6 | Guido Trotter | def _InstancePidInfo(cls, pid): |
227 | 263b8de6 | Guido Trotter | """Check pid file for instance information.
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228 | 263b8de6 | Guido Trotter |
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229 | 263b8de6 | Guido Trotter | Check that a pid file is associated with an instance, and retrieve
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230 | 263b8de6 | Guido Trotter | information from its command line.
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231 | 263b8de6 | Guido Trotter |
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232 | 263b8de6 | Guido Trotter | @type pid: string or int
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233 | 263b8de6 | Guido Trotter | @param pid: process id of the instance to check
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234 | 263b8de6 | Guido Trotter | @rtype: tuple
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235 | 263b8de6 | Guido Trotter | @return: (instance_name, memory, vcpus)
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236 | 263b8de6 | Guido Trotter | @raise errors.HypervisorError: when an instance cannot be found
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237 | 263b8de6 | Guido Trotter |
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238 | 263b8de6 | Guido Trotter | """
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239 | 263b8de6 | Guido Trotter | alive = utils.IsProcessAlive(pid) |
240 | 263b8de6 | Guido Trotter | if not alive: |
241 | 263b8de6 | Guido Trotter | raise errors.HypervisorError("Cannot get info for pid %s" % pid) |
242 | 263b8de6 | Guido Trotter | |
243 | 263b8de6 | Guido Trotter | cmdline_file = utils.PathJoin("/proc", str(pid), "cmdline") |
244 | 263b8de6 | Guido Trotter | try:
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245 | 263b8de6 | Guido Trotter | cmdline = utils.ReadFile(cmdline_file) |
246 | 263b8de6 | Guido Trotter | except EnvironmentError, err: |
247 | 263b8de6 | Guido Trotter | raise errors.HypervisorError("Can't open cmdline file for pid %s: %s" % |
248 | 263b8de6 | Guido Trotter | (pid, err)) |
249 | 263b8de6 | Guido Trotter | |
250 | 263b8de6 | Guido Trotter | instance = None
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251 | 263b8de6 | Guido Trotter | memory = 0
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252 | 263b8de6 | Guido Trotter | vcpus = 0
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253 | 263b8de6 | Guido Trotter | |
254 | 263b8de6 | Guido Trotter | arg_list = cmdline.split('\x00')
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255 | 263b8de6 | Guido Trotter | while arg_list:
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256 | 263b8de6 | Guido Trotter | arg = arg_list.pop(0)
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257 | 263b8de6 | Guido Trotter | if arg == "-name": |
258 | 263b8de6 | Guido Trotter | instance = arg_list.pop(0)
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259 | 263b8de6 | Guido Trotter | elif arg == "-m": |
260 | 263b8de6 | Guido Trotter | memory = int(arg_list.pop(0)) |
261 | 263b8de6 | Guido Trotter | elif arg == "-smp": |
262 | 263b8de6 | Guido Trotter | vcpus = int(arg_list.pop(0)) |
263 | 263b8de6 | Guido Trotter | |
264 | 263b8de6 | Guido Trotter | if instance is None: |
265 | 263b8de6 | Guido Trotter | raise errors.HypervisorError("Pid %s doesn't contain a ganeti kvm" |
266 | 263b8de6 | Guido Trotter | " instance" % pid)
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267 | 263b8de6 | Guido Trotter | |
268 | 263b8de6 | Guido Trotter | return (instance, memory, vcpus)
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269 | 263b8de6 | Guido Trotter | |
270 | 1f8b3a27 | Guido Trotter | def _InstancePidAlive(self, instance_name): |
271 | 263b8de6 | Guido Trotter | """Returns the instance pidfile, pid, and liveness.
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272 | 263b8de6 | Guido Trotter |
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273 | 263b8de6 | Guido Trotter | @type instance_name: string
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274 | 263b8de6 | Guido Trotter | @param instance_name: instance name
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275 | 263b8de6 | Guido Trotter | @rtype: tuple
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276 | 263b8de6 | Guido Trotter | @return: (pid file name, pid, liveness)
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277 | 1f8b3a27 | Guido Trotter |
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278 | 1f8b3a27 | Guido Trotter | """
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279 | 98ec75d6 | Iustin Pop | pidfile = self._InstancePidFile(instance_name)
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280 | 1f8b3a27 | Guido Trotter | pid = utils.ReadPidFile(pidfile) |
281 | 263b8de6 | Guido Trotter | |
282 | 263b8de6 | Guido Trotter | alive = False
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283 | 263b8de6 | Guido Trotter | try:
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284 | 263b8de6 | Guido Trotter | cmd_instance = self._InstancePidInfo(pid)[0] |
285 | 263b8de6 | Guido Trotter | alive = (cmd_instance == instance_name) |
286 | 263b8de6 | Guido Trotter | except errors.HypervisorError:
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287 | 263b8de6 | Guido Trotter | pass
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288 | 1f8b3a27 | Guido Trotter | |
289 | 1f8b3a27 | Guido Trotter | return (pidfile, pid, alive)
|
290 | 1f8b3a27 | Guido Trotter | |
291 | 5905901c | Iustin Pop | def _CheckDown(self, instance_name): |
292 | 5905901c | Iustin Pop | """Raises an error unless the given instance is down.
|
293 | 5905901c | Iustin Pop |
|
294 | 5905901c | Iustin Pop | """
|
295 | 5905901c | Iustin Pop | alive = self._InstancePidAlive(instance_name)[2] |
296 | 5905901c | Iustin Pop | if alive:
|
297 | 5905901c | Iustin Pop | raise errors.HypervisorError("Failed to start instance %s: %s" % |
298 | 5905901c | Iustin Pop | (instance_name, "already running"))
|
299 | 5905901c | Iustin Pop | |
300 | 0df4d98a | Guido Trotter | @classmethod
|
301 | 0df4d98a | Guido Trotter | def _InstanceMonitor(cls, instance_name): |
302 | c4fbefc8 | Guido Trotter | """Returns the instance monitor socket name
|
303 | c4fbefc8 | Guido Trotter |
|
304 | c4fbefc8 | Guido Trotter | """
|
305 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._CTRL_DIR, "%s.monitor" % instance_name) |
306 | c4fbefc8 | Guido Trotter | |
307 | 0df4d98a | Guido Trotter | @classmethod
|
308 | 0df4d98a | Guido Trotter | def _InstanceSerial(cls, instance_name): |
309 | c4fbefc8 | Guido Trotter | """Returns the instance serial socket name
|
310 | c4fbefc8 | Guido Trotter |
|
311 | c4fbefc8 | Guido Trotter | """
|
312 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._CTRL_DIR, "%s.serial" % instance_name) |
313 | c4fbefc8 | Guido Trotter | |
314 | 86d6bc2a | Guido Trotter | @staticmethod
|
315 | 86d6bc2a | Guido Trotter | def _SocatUnixConsoleParams(): |
316 | 86d6bc2a | Guido Trotter | """Returns the correct parameters for socat
|
317 | 86d6bc2a | Guido Trotter |
|
318 | 86d6bc2a | Guido Trotter | If we have a new-enough socat we can use raw mode with an escape character.
|
319 | 86d6bc2a | Guido Trotter |
|
320 | 86d6bc2a | Guido Trotter | """
|
321 | fe5b0c42 | Michael Hanselmann | if constants.SOCAT_USE_ESCAPE:
|
322 | 86d6bc2a | Guido Trotter | return "raw,echo=0,escape=%s" % constants.SOCAT_ESCAPE_CODE |
323 | 86d6bc2a | Guido Trotter | else:
|
324 | 86d6bc2a | Guido Trotter | return "echo=0,icanon=0" |
325 | 86d6bc2a | Guido Trotter | |
326 | 0df4d98a | Guido Trotter | @classmethod
|
327 | 0df4d98a | Guido Trotter | def _InstanceKVMRuntime(cls, instance_name): |
328 | 38e250ba | Guido Trotter | """Returns the instance KVM runtime filename
|
329 | 38e250ba | Guido Trotter |
|
330 | 38e250ba | Guido Trotter | """
|
331 | 30786fc9 | Iustin Pop | return utils.PathJoin(cls._CONF_DIR, "%s.runtime" % instance_name) |
332 | 38e250ba | Guido Trotter | |
333 | 7e66c35b | Guido Trotter | @classmethod
|
334 | 547a63b7 | Balazs Lecz | def _InstanceChrootDir(cls, instance_name): |
335 | 547a63b7 | Balazs Lecz | """Returns the name of the KVM chroot dir of the instance
|
336 | 547a63b7 | Balazs Lecz |
|
337 | 547a63b7 | Balazs Lecz | """
|
338 | 547a63b7 | Balazs Lecz | return utils.PathJoin(cls._CHROOT_DIR, instance_name)
|
339 | 547a63b7 | Balazs Lecz | |
340 | 547a63b7 | Balazs Lecz | @classmethod
|
341 | 5d9bfd87 | Apollon Oikonomopoulos | def _InstanceNICDir(cls, instance_name): |
342 | 5d9bfd87 | Apollon Oikonomopoulos | """Returns the name of the directory holding the tap device files for a
|
343 | 5d9bfd87 | Apollon Oikonomopoulos | given instance.
|
344 | 5d9bfd87 | Apollon Oikonomopoulos |
|
345 | 5d9bfd87 | Apollon Oikonomopoulos | """
|
346 | 5d9bfd87 | Apollon Oikonomopoulos | return utils.PathJoin(cls._NICS_DIR, instance_name)
|
347 | 5d9bfd87 | Apollon Oikonomopoulos | |
348 | 5d9bfd87 | Apollon Oikonomopoulos | @classmethod
|
349 | 5d9bfd87 | Apollon Oikonomopoulos | def _InstanceNICFile(cls, instance_name, seq): |
350 | 5d9bfd87 | Apollon Oikonomopoulos | """Returns the name of the file containing the tap device for a given NIC
|
351 | 5d9bfd87 | Apollon Oikonomopoulos |
|
352 | 5d9bfd87 | Apollon Oikonomopoulos | """
|
353 | 5d9bfd87 | Apollon Oikonomopoulos | return utils.PathJoin(cls._InstanceNICDir(instance_name), str(seq)) |
354 | 5d9bfd87 | Apollon Oikonomopoulos | |
355 | 5d9bfd87 | Apollon Oikonomopoulos | @classmethod
|
356 | 7548396c | Guido Trotter | def _TryReadUidFile(cls, uid_file): |
357 | 7548396c | Guido Trotter | """Try to read a uid file
|
358 | 7548396c | Guido Trotter |
|
359 | 7548396c | Guido Trotter | """
|
360 | 7548396c | Guido Trotter | if os.path.exists(uid_file):
|
361 | 7548396c | Guido Trotter | try:
|
362 | 682f7601 | Guido Trotter | uid = int(utils.ReadOneLineFile(uid_file))
|
363 | aa0b600b | Guido Trotter | return uid
|
364 | 7548396c | Guido Trotter | except EnvironmentError: |
365 | 7548396c | Guido Trotter | logging.warning("Can't read uid file", exc_info=True) |
366 | 7548396c | Guido Trotter | except (TypeError, ValueError): |
367 | 7548396c | Guido Trotter | logging.warning("Can't parse uid file contents", exc_info=True) |
368 | aa0b600b | Guido Trotter | return None |
369 | 7548396c | Guido Trotter | |
370 | 7548396c | Guido Trotter | @classmethod
|
371 | 7e66c35b | Guido Trotter | def _RemoveInstanceRuntimeFiles(cls, pidfile, instance_name): |
372 | 547a63b7 | Balazs Lecz | """Removes an instance's rutime sockets/files/dirs.
|
373 | 7e66c35b | Guido Trotter |
|
374 | 7e66c35b | Guido Trotter | """
|
375 | 7e66c35b | Guido Trotter | utils.RemoveFile(pidfile) |
376 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceMonitor(instance_name)) |
377 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceSerial(instance_name)) |
378 | 7e66c35b | Guido Trotter | utils.RemoveFile(cls._InstanceKVMRuntime(instance_name)) |
379 | 7548396c | Guido Trotter | uid_file = cls._InstanceUidFile(instance_name) |
380 | 7548396c | Guido Trotter | uid = cls._TryReadUidFile(uid_file) |
381 | 7548396c | Guido Trotter | utils.RemoveFile(uid_file) |
382 | 7548396c | Guido Trotter | if uid is not None: |
383 | 7548396c | Guido Trotter | uidpool.ReleaseUid(uid) |
384 | 7be85163 | Guido Trotter | try:
|
385 | 7be85163 | Guido Trotter | shutil.rmtree(cls._InstanceNICDir(instance_name)) |
386 | 7be85163 | Guido Trotter | except OSError, err: |
387 | 7be85163 | Guido Trotter | if err.errno != errno.ENOENT:
|
388 | 7be85163 | Guido Trotter | raise
|
389 | 547a63b7 | Balazs Lecz | try:
|
390 | 547a63b7 | Balazs Lecz | chroot_dir = cls._InstanceChrootDir(instance_name) |
391 | 547a63b7 | Balazs Lecz | utils.RemoveDir(chroot_dir) |
392 | 547a63b7 | Balazs Lecz | except OSError, err: |
393 | 547a63b7 | Balazs Lecz | if err.errno == errno.ENOTEMPTY:
|
394 | 547a63b7 | Balazs Lecz | # The chroot directory is expected to be empty, but it isn't.
|
395 | 547a63b7 | Balazs Lecz | new_chroot_dir = tempfile.mkdtemp(dir=cls._CHROOT_QUARANTINE_DIR, |
396 | 547a63b7 | Balazs Lecz | prefix="%s-%s-" %
|
397 | 547a63b7 | Balazs Lecz | (instance_name, |
398 | 547a63b7 | Balazs Lecz | utils.TimestampForFilename())) |
399 | 547a63b7 | Balazs Lecz | logging.warning("The chroot directory of instance %s can not be"
|
400 | 547a63b7 | Balazs Lecz | " removed as it is not empty. Moving it to the"
|
401 | 547a63b7 | Balazs Lecz | " quarantine instead. Please investigate the"
|
402 | 547a63b7 | Balazs Lecz | " contents (%s) and clean up manually",
|
403 | 547a63b7 | Balazs Lecz | instance_name, new_chroot_dir) |
404 | 547a63b7 | Balazs Lecz | utils.RenameFile(chroot_dir, new_chroot_dir) |
405 | 547a63b7 | Balazs Lecz | else:
|
406 | 547a63b7 | Balazs Lecz | raise
|
407 | 7e66c35b | Guido Trotter | |
408 | 748e4b5a | Michael Hanselmann | @staticmethod
|
409 | 5d9bfd87 | Apollon Oikonomopoulos | def _ConfigureNIC(instance, seq, nic, tap): |
410 | 5d9bfd87 | Apollon Oikonomopoulos | """Run the network configuration script for a specified NIC
|
411 | eb58f9b1 | Guido Trotter |
|
412 | eb58f9b1 | Guido Trotter | @param instance: instance we're acting on
|
413 | eb58f9b1 | Guido Trotter | @type instance: instance object
|
414 | eb58f9b1 | Guido Trotter | @param seq: nic sequence number
|
415 | eb58f9b1 | Guido Trotter | @type seq: int
|
416 | eb58f9b1 | Guido Trotter | @param nic: nic we're acting on
|
417 | eb58f9b1 | Guido Trotter | @type nic: nic object
|
418 | 5d9bfd87 | Apollon Oikonomopoulos | @param tap: the host's tap interface this NIC corresponds to
|
419 | 5d9bfd87 | Apollon Oikonomopoulos | @type tap: str
|
420 | eb58f9b1 | Guido Trotter |
|
421 | eb58f9b1 | Guido Trotter | """
|
422 | 748e4b5a | Michael Hanselmann | |
423 | 5d9bfd87 | Apollon Oikonomopoulos | if instance.tags:
|
424 | 5d9bfd87 | Apollon Oikonomopoulos | tags = " ".join(instance.tags)
|
425 | 5d9bfd87 | Apollon Oikonomopoulos | else:
|
426 | 5d9bfd87 | Apollon Oikonomopoulos | tags = ""
|
427 | 5d9bfd87 | Apollon Oikonomopoulos | |
428 | 5d9bfd87 | Apollon Oikonomopoulos | env = { |
429 | 5d9bfd87 | Apollon Oikonomopoulos | "PATH": "%s:/sbin:/usr/sbin" % os.environ["PATH"], |
430 | 5d9bfd87 | Apollon Oikonomopoulos | "INSTANCE": instance.name,
|
431 | 5d9bfd87 | Apollon Oikonomopoulos | "MAC": nic.mac,
|
432 | 5d9bfd87 | Apollon Oikonomopoulos | "MODE": nic.nicparams[constants.NIC_MODE],
|
433 | 5d9bfd87 | Apollon Oikonomopoulos | "INTERFACE": tap,
|
434 | 5d9bfd87 | Apollon Oikonomopoulos | "INTERFACE_INDEX": str(seq), |
435 | 5d9bfd87 | Apollon Oikonomopoulos | "TAGS": tags,
|
436 | 5d9bfd87 | Apollon Oikonomopoulos | } |
437 | 5d9bfd87 | Apollon Oikonomopoulos | |
438 | 5d9bfd87 | Apollon Oikonomopoulos | if nic.ip:
|
439 | 5d9bfd87 | Apollon Oikonomopoulos | env["IP"] = nic.ip
|
440 | 5d9bfd87 | Apollon Oikonomopoulos | |
441 | 5d9bfd87 | Apollon Oikonomopoulos | if nic.nicparams[constants.NIC_LINK]:
|
442 | 5d9bfd87 | Apollon Oikonomopoulos | env["LINK"] = nic.nicparams[constants.NIC_LINK]
|
443 | 5d9bfd87 | Apollon Oikonomopoulos | |
444 | 5d9bfd87 | Apollon Oikonomopoulos | if nic.nicparams[constants.NIC_MODE] == constants.NIC_MODE_BRIDGED:
|
445 | 5d9bfd87 | Apollon Oikonomopoulos | env["BRIDGE"] = nic.nicparams[constants.NIC_LINK]
|
446 | 5d9bfd87 | Apollon Oikonomopoulos | |
447 | 5d9bfd87 | Apollon Oikonomopoulos | result = utils.RunCmd([constants.KVM_IFUP, tap], env=env) |
448 | 5d9bfd87 | Apollon Oikonomopoulos | if result.failed:
|
449 | 5d9bfd87 | Apollon Oikonomopoulos | raise errors.HypervisorError("Failed to configure interface %s: %s." |
450 | 5d9bfd87 | Apollon Oikonomopoulos | " Network configuration script output: %s" %
|
451 | 5d9bfd87 | Apollon Oikonomopoulos | (tap, result.fail_reason, result.output)) |
452 | eb58f9b1 | Guido Trotter | |
453 | eb58f9b1 | Guido Trotter | def ListInstances(self): |
454 | eb58f9b1 | Guido Trotter | """Get the list of running instances.
|
455 | eb58f9b1 | Guido Trotter |
|
456 | c41eea6e | Iustin Pop | We can do this by listing our live instances directory and
|
457 | c41eea6e | Iustin Pop | checking whether the associated kvm process is still alive.
|
458 | eb58f9b1 | Guido Trotter |
|
459 | eb58f9b1 | Guido Trotter | """
|
460 | eb58f9b1 | Guido Trotter | result = [] |
461 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
462 | 263b8de6 | Guido Trotter | if self._InstancePidAlive(name)[2]: |
463 | eb58f9b1 | Guido Trotter | result.append(name) |
464 | eb58f9b1 | Guido Trotter | return result
|
465 | eb58f9b1 | Guido Trotter | |
466 | eb58f9b1 | Guido Trotter | def GetInstanceInfo(self, instance_name): |
467 | eb58f9b1 | Guido Trotter | """Get instance properties.
|
468 | eb58f9b1 | Guido Trotter |
|
469 | 4fbb3c60 | Guido Trotter | @type instance_name: string
|
470 | c41eea6e | Iustin Pop | @param instance_name: the instance name
|
471 | 4fbb3c60 | Guido Trotter | @rtype: tuple of strings
|
472 | 4fbb3c60 | Guido Trotter | @return: (name, id, memory, vcpus, stat, times)
|
473 | eb58f9b1 | Guido Trotter |
|
474 | eb58f9b1 | Guido Trotter | """
|
475 | 1122eb25 | Iustin Pop | _, pid, alive = self._InstancePidAlive(instance_name)
|
476 | 1f8b3a27 | Guido Trotter | if not alive: |
477 | eb58f9b1 | Guido Trotter | return None |
478 | eb58f9b1 | Guido Trotter | |
479 | 263b8de6 | Guido Trotter | _, memory, vcpus = self._InstancePidInfo(pid)
|
480 | eb58f9b1 | Guido Trotter | stat = "---b-"
|
481 | eb58f9b1 | Guido Trotter | times = "0"
|
482 | eb58f9b1 | Guido Trotter | |
483 | eb58f9b1 | Guido Trotter | return (instance_name, pid, memory, vcpus, stat, times)
|
484 | eb58f9b1 | Guido Trotter | |
485 | eb58f9b1 | Guido Trotter | def GetAllInstancesInfo(self): |
486 | eb58f9b1 | Guido Trotter | """Get properties of all instances.
|
487 | eb58f9b1 | Guido Trotter |
|
488 | c41eea6e | Iustin Pop | @return: list of tuples (name, id, memory, vcpus, stat, times)
|
489 | c41eea6e | Iustin Pop |
|
490 | eb58f9b1 | Guido Trotter | """
|
491 | eb58f9b1 | Guido Trotter | data = [] |
492 | eb58f9b1 | Guido Trotter | for name in os.listdir(self._PIDS_DIR): |
493 | 263b8de6 | Guido Trotter | try:
|
494 | 263b8de6 | Guido Trotter | info = self.GetInstanceInfo(name)
|
495 | 263b8de6 | Guido Trotter | except errors.HypervisorError:
|
496 | 263b8de6 | Guido Trotter | continue
|
497 | 263b8de6 | Guido Trotter | if info:
|
498 | 263b8de6 | Guido Trotter | data.append(info) |
499 | eb58f9b1 | Guido Trotter | return data
|
500 | eb58f9b1 | Guido Trotter | |
501 | 07813a9e | Iustin Pop | def _GenerateKVMRuntime(self, instance, block_devices): |
502 | ee5f20b0 | Guido Trotter | """Generate KVM information to start an instance.
|
503 | eb58f9b1 | Guido Trotter |
|
504 | eb58f9b1 | Guido Trotter | """
|
505 | 98ec75d6 | Iustin Pop | pidfile = self._InstancePidFile(instance.name)
|
506 | eb58f9b1 | Guido Trotter | kvm = constants.KVM_PATH |
507 | eb58f9b1 | Guido Trotter | kvm_cmd = [kvm] |
508 | c6a39fc2 | Guido Trotter | # used just by the vnc server, if enabled
|
509 | c6a39fc2 | Guido Trotter | kvm_cmd.extend(['-name', instance.name])
|
510 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-m', instance.beparams[constants.BE_MEMORY]])
|
511 | 8b3fd458 | Iustin Pop | kvm_cmd.extend(['-smp', instance.beparams[constants.BE_VCPUS]])
|
512 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-pidfile', pidfile])
|
513 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-daemonize'])
|
514 | 6b5605e8 | Iustin Pop | if not instance.hvparams[constants.HV_ACPI]: |
515 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-no-acpi'])
|
516 | eb58f9b1 | Guido Trotter | |
517 | a985b417 | Iustin Pop | hvp = instance.hvparams |
518 | 835528af | Iustin Pop | boot_disk = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_DISK |
519 | 835528af | Iustin Pop | boot_cdrom = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_CDROM |
520 | 835528af | Iustin Pop | boot_network = hvp[constants.HV_BOOT_ORDER] == constants.HT_BO_NETWORK |
521 | 8745c3d7 | Guido Trotter | |
522 | 7ba594c0 | Guido Trotter | if hvp[constants.HV_KVM_FLAG] == constants.HT_KVM_ENABLED:
|
523 | 7ba594c0 | Guido Trotter | kvm_cmd.extend(["-enable-kvm"])
|
524 | 7ba594c0 | Guido Trotter | elif hvp[constants.HV_KVM_FLAG] == constants.HT_KVM_DISABLED:
|
525 | 7ba594c0 | Guido Trotter | kvm_cmd.extend(["-disable-kvm"])
|
526 | 7ba594c0 | Guido Trotter | |
527 | 8745c3d7 | Guido Trotter | if boot_network:
|
528 | 8745c3d7 | Guido Trotter | kvm_cmd.extend(['-boot', 'n']) |
529 | 1213604d | Guido Trotter | |
530 | a985b417 | Iustin Pop | disk_type = hvp[constants.HV_DISK_TYPE] |
531 | 1213604d | Guido Trotter | if disk_type == constants.HT_DISK_PARAVIRTUAL:
|
532 | 1213604d | Guido Trotter | if_val = ',if=virtio'
|
533 | 1213604d | Guido Trotter | else:
|
534 | 1213604d | Guido Trotter | if_val = ',if=%s' % disk_type
|
535 | 19572932 | Iustin Pop | # Cache mode
|
536 | 19572932 | Iustin Pop | disk_cache = hvp[constants.HV_DISK_CACHE] |
537 | 19572932 | Iustin Pop | if disk_cache != constants.HT_CACHE_DEFAULT:
|
538 | 19572932 | Iustin Pop | cache_val = ",cache=%s" % disk_cache
|
539 | 19572932 | Iustin Pop | else:
|
540 | 19572932 | Iustin Pop | cache_val = ""
|
541 | 069cfbf1 | Iustin Pop | for cfdev, dev_path in block_devices: |
542 | d34b16d7 | Iustin Pop | if cfdev.mode != constants.DISK_RDWR:
|
543 | d34b16d7 | Iustin Pop | raise errors.HypervisorError("Instance has read-only disks which" |
544 | d34b16d7 | Iustin Pop | " are not supported by KVM")
|
545 | eb58f9b1 | Guido Trotter | # TODO: handle FD_LOOP and FD_BLKTAP (?)
|
546 | 66d5dbef | Guido Trotter | if boot_disk:
|
547 | 9dd363eb | Guido Trotter | kvm_cmd.extend(['-boot', 'c']) |
548 | 9cf4321f | Apollon Oikonomopoulos | if disk_type != constants.HT_DISK_IDE:
|
549 | 74a4c11b | Guido Trotter | boot_val = ',boot=on'
|
550 | 9cf4321f | Apollon Oikonomopoulos | else:
|
551 | 74a4c11b | Guido Trotter | boot_val = ''
|
552 | 8745c3d7 | Guido Trotter | # We only boot from the first disk
|
553 | 66d5dbef | Guido Trotter | boot_disk = False
|
554 | eb58f9b1 | Guido Trotter | else:
|
555 | eb58f9b1 | Guido Trotter | boot_val = ''
|
556 | eb58f9b1 | Guido Trotter | |
557 | 19572932 | Iustin Pop | drive_val = 'file=%s,format=raw%s%s%s' % (dev_path, if_val, boot_val,
|
558 | 19572932 | Iustin Pop | cache_val) |
559 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-drive', drive_val])
|
560 | eb58f9b1 | Guido Trotter | |
561 | a985b417 | Iustin Pop | iso_image = hvp[constants.HV_CDROM_IMAGE_PATH] |
562 | 66d5dbef | Guido Trotter | if iso_image:
|
563 | 9dd363eb | Guido Trotter | options = ',format=raw,media=cdrom'
|
564 | 66d5dbef | Guido Trotter | if boot_cdrom:
|
565 | 9dd363eb | Guido Trotter | kvm_cmd.extend(['-boot', 'd']) |
566 | 9cf4321f | Apollon Oikonomopoulos | if disk_type != constants.HT_DISK_IDE:
|
567 | 74a4c11b | Guido Trotter | options = '%s,boot=on' % options
|
568 | 9dd363eb | Guido Trotter | else:
|
569 | 9cf4321f | Apollon Oikonomopoulos | if disk_type == constants.HT_DISK_PARAVIRTUAL:
|
570 | 9cf4321f | Apollon Oikonomopoulos | if_val = ',if=virtio'
|
571 | 9cf4321f | Apollon Oikonomopoulos | else:
|
572 | 9cf4321f | Apollon Oikonomopoulos | if_val = ',if=%s' % disk_type
|
573 | 9cf4321f | Apollon Oikonomopoulos | options = '%s%s' % (options, if_val)
|
574 | 66d5dbef | Guido Trotter | drive_val = 'file=%s%s' % (iso_image, options)
|
575 | 66d5dbef | Guido Trotter | kvm_cmd.extend(['-drive', drive_val])
|
576 | 66d5dbef | Guido Trotter | |
577 | a985b417 | Iustin Pop | kernel_path = hvp[constants.HV_KERNEL_PATH] |
578 | df5ab9f0 | Guido Trotter | if kernel_path:
|
579 | df5ab9f0 | Guido Trotter | kvm_cmd.extend(['-kernel', kernel_path])
|
580 | a985b417 | Iustin Pop | initrd_path = hvp[constants.HV_INITRD_PATH] |
581 | df5ab9f0 | Guido Trotter | if initrd_path:
|
582 | df5ab9f0 | Guido Trotter | kvm_cmd.extend(['-initrd', initrd_path])
|
583 | 07813a9e | Iustin Pop | root_append = ['root=%s' % hvp[constants.HV_ROOT_PATH],
|
584 | 07813a9e | Iustin Pop | hvp[constants.HV_KERNEL_ARGS]] |
585 | 07813a9e | Iustin Pop | if hvp[constants.HV_SERIAL_CONSOLE]:
|
586 | 07813a9e | Iustin Pop | root_append.append('console=ttyS0,38400')
|
587 | 07813a9e | Iustin Pop | kvm_cmd.extend(['-append', ' '.join(root_append)]) |
588 | eb58f9b1 | Guido Trotter | |
589 | 4f958b0b | Miguel Di Ciurcio Filho | mem_path = hvp[constants.HV_MEM_PATH] |
590 | 4f958b0b | Miguel Di Ciurcio Filho | if mem_path:
|
591 | 9d3015f9 | Guido Trotter | kvm_cmd.extend(["-mem-path", mem_path, "-mem-prealloc"]) |
592 | 4f958b0b | Miguel Di Ciurcio Filho | |
593 | a985b417 | Iustin Pop | mouse_type = hvp[constants.HV_USB_MOUSE] |
594 | 31f6f67a | Guido Trotter | vnc_bind_address = hvp[constants.HV_VNC_BIND_ADDRESS] |
595 | 31f6f67a | Guido Trotter | |
596 | 11344a50 | Guido Trotter | if mouse_type:
|
597 | 11344a50 | Guido Trotter | kvm_cmd.extend(['-usb'])
|
598 | 11344a50 | Guido Trotter | kvm_cmd.extend(['-usbdevice', mouse_type])
|
599 | 31f6f67a | Guido Trotter | elif vnc_bind_address:
|
600 | 31f6f67a | Guido Trotter | kvm_cmd.extend(['-usbdevice', constants.HT_MOUSE_TABLET])
|
601 | 11344a50 | Guido Trotter | |
602 | 8470c8db | Guido Trotter | if vnc_bind_address:
|
603 | 8b312c1d | Manuel Franceschini | if netutils.IP4Address.IsValid(vnc_bind_address):
|
604 | 377d74c9 | Guido Trotter | if instance.network_port > constants.VNC_BASE_PORT:
|
605 | 377d74c9 | Guido Trotter | display = instance.network_port - constants.VNC_BASE_PORT |
606 | 14f5f1b6 | Manuel Franceschini | if vnc_bind_address == constants.IP4_ADDRESS_ANY:
|
607 | 8447f52b | Guido Trotter | vnc_arg = ':%d' % (display)
|
608 | 8447f52b | Guido Trotter | else:
|
609 | 19498d6c | Guido Trotter | vnc_arg = '%s:%d' % (vnc_bind_address, display)
|
610 | 8470c8db | Guido Trotter | else:
|
611 | 8447f52b | Guido Trotter | logging.error("Network port is not a valid VNC display (%d < %d)."
|
612 | 07b8a2b5 | Iustin Pop | " Not starting VNC", instance.network_port,
|
613 | 07b8a2b5 | Iustin Pop | constants.VNC_BASE_PORT) |
614 | 8447f52b | Guido Trotter | vnc_arg = 'none'
|
615 | 8b2d1013 | Guido Trotter | |
616 | 8b2d1013 | Guido Trotter | # Only allow tls and other option when not binding to a file, for now.
|
617 | 8b2d1013 | Guido Trotter | # kvm/qemu gets confused otherwise about the filename to use.
|
618 | 8b2d1013 | Guido Trotter | vnc_append = ''
|
619 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_TLS]:
|
620 | 8b2d1013 | Guido Trotter | vnc_append = '%s,tls' % vnc_append
|
621 | a985b417 | Iustin Pop | if hvp[constants.HV_VNC_X509_VERIFY]:
|
622 | 8b2d1013 | Guido Trotter | vnc_append = '%s,x509verify=%s' % (vnc_append,
|
623 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
624 | a985b417 | Iustin Pop | elif hvp[constants.HV_VNC_X509]:
|
625 | 8b2d1013 | Guido Trotter | vnc_append = '%s,x509=%s' % (vnc_append,
|
626 | a985b417 | Iustin Pop | hvp[constants.HV_VNC_X509]) |
627 | 6e6bb8d5 | Guido Trotter | if hvp[constants.HV_VNC_PASSWORD_FILE]:
|
628 | 6e6bb8d5 | Guido Trotter | vnc_append = '%s,password' % vnc_append
|
629 | 6e6bb8d5 | Guido Trotter | |
630 | 8b2d1013 | Guido Trotter | vnc_arg = '%s%s' % (vnc_arg, vnc_append)
|
631 | 8b2d1013 | Guido Trotter | |
632 | 8470c8db | Guido Trotter | else:
|
633 | 8b2d1013 | Guido Trotter | vnc_arg = 'unix:%s/%s.vnc' % (vnc_bind_address, instance.name)
|
634 | 8b2d1013 | Guido Trotter | |
635 | 8447f52b | Guido Trotter | kvm_cmd.extend(['-vnc', vnc_arg])
|
636 | 8470c8db | Guido Trotter | else:
|
637 | 8470c8db | Guido Trotter | kvm_cmd.extend(['-nographic'])
|
638 | 8470c8db | Guido Trotter | |
639 | 69b99987 | Michael Hanselmann | monitor_dev = ("unix:%s,server,nowait" %
|
640 | 69b99987 | Michael Hanselmann | self._InstanceMonitor(instance.name))
|
641 | eb58f9b1 | Guido Trotter | kvm_cmd.extend(['-monitor', monitor_dev])
|
642 | a985b417 | Iustin Pop | if hvp[constants.HV_SERIAL_CONSOLE]:
|
643 | a985b417 | Iustin Pop | serial_dev = ('unix:%s,server,nowait' %
|
644 | a985b417 | Iustin Pop | self._InstanceSerial(instance.name))
|
645 | a2faf9ee | Guido Trotter | kvm_cmd.extend(['-serial', serial_dev])
|
646 | a2faf9ee | Guido Trotter | else:
|
647 | a2faf9ee | Guido Trotter | kvm_cmd.extend(['-serial', 'none']) |
648 | eb58f9b1 | Guido Trotter | |
649 | 6b970cef | Jun Futagawa | if hvp[constants.HV_USE_LOCALTIME]:
|
650 | 6b970cef | Jun Futagawa | kvm_cmd.extend(['-localtime'])
|
651 | 6b970cef | Jun Futagawa | |
652 | 547a63b7 | Balazs Lecz | if hvp[constants.HV_KVM_USE_CHROOT]:
|
653 | 547a63b7 | Balazs Lecz | kvm_cmd.extend(['-chroot', self._InstanceChrootDir(instance.name)]) |
654 | 547a63b7 | Balazs Lecz | |
655 | ee5f20b0 | Guido Trotter | # Save the current instance nics, but defer their expansion as parameters,
|
656 | ee5f20b0 | Guido Trotter | # as we'll need to generate executable temp files for them.
|
657 | ee5f20b0 | Guido Trotter | kvm_nics = instance.nics |
658 | a985b417 | Iustin Pop | hvparams = hvp |
659 | ee5f20b0 | Guido Trotter | |
660 | c2672466 | Guido Trotter | return (kvm_cmd, kvm_nics, hvparams)
|
661 | ee5f20b0 | Guido Trotter | |
662 | 38e250ba | Guido Trotter | def _WriteKVMRuntime(self, instance_name, data): |
663 | 38e250ba | Guido Trotter | """Write an instance's KVM runtime
|
664 | 38e250ba | Guido Trotter |
|
665 | 38e250ba | Guido Trotter | """
|
666 | 38e250ba | Guido Trotter | try:
|
667 | 38e250ba | Guido Trotter | utils.WriteFile(self._InstanceKVMRuntime(instance_name),
|
668 | 38e250ba | Guido Trotter | data=data) |
669 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
670 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to save KVM runtime file: %s" % err) |
671 | 38e250ba | Guido Trotter | |
672 | 38e250ba | Guido Trotter | def _ReadKVMRuntime(self, instance_name): |
673 | 38e250ba | Guido Trotter | """Read an instance's KVM runtime
|
674 | 38e250ba | Guido Trotter |
|
675 | 38e250ba | Guido Trotter | """
|
676 | 38e250ba | Guido Trotter | try:
|
677 | 38e250ba | Guido Trotter | file_content = utils.ReadFile(self._InstanceKVMRuntime(instance_name))
|
678 | 90c024f6 | Guido Trotter | except EnvironmentError, err: |
679 | 38e250ba | Guido Trotter | raise errors.HypervisorError("Failed to load KVM runtime file: %s" % err) |
680 | 38e250ba | Guido Trotter | return file_content
|
681 | 38e250ba | Guido Trotter | |
682 | 38e250ba | Guido Trotter | def _SaveKVMRuntime(self, instance, kvm_runtime): |
683 | 38e250ba | Guido Trotter | """Save an instance's KVM runtime
|
684 | 38e250ba | Guido Trotter |
|
685 | 38e250ba | Guido Trotter | """
|
686 | c2672466 | Guido Trotter | kvm_cmd, kvm_nics, hvparams = kvm_runtime |
687 | 38e250ba | Guido Trotter | serialized_nics = [nic.ToDict() for nic in kvm_nics] |
688 | c2672466 | Guido Trotter | serialized_form = serializer.Dump((kvm_cmd, serialized_nics, hvparams)) |
689 | 38e250ba | Guido Trotter | self._WriteKVMRuntime(instance.name, serialized_form)
|
690 | 38e250ba | Guido Trotter | |
691 | 30e42c4e | Guido Trotter | def _LoadKVMRuntime(self, instance, serialized_runtime=None): |
692 | 38e250ba | Guido Trotter | """Load an instance's KVM runtime
|
693 | 38e250ba | Guido Trotter |
|
694 | 38e250ba | Guido Trotter | """
|
695 | 30e42c4e | Guido Trotter | if not serialized_runtime: |
696 | 30e42c4e | Guido Trotter | serialized_runtime = self._ReadKVMRuntime(instance.name)
|
697 | 30e42c4e | Guido Trotter | loaded_runtime = serializer.Load(serialized_runtime) |
698 | c2672466 | Guido Trotter | kvm_cmd, serialized_nics, hvparams = loaded_runtime |
699 | 38e250ba | Guido Trotter | kvm_nics = [objects.NIC.FromDict(snic) for snic in serialized_nics] |
700 | c2672466 | Guido Trotter | return (kvm_cmd, kvm_nics, hvparams)
|
701 | 38e250ba | Guido Trotter | |
702 | 5d9bfd87 | Apollon Oikonomopoulos | def _RunKVMCmd(self, name, kvm_cmd, tap_fds=None): |
703 | 76431533 | Guido Trotter | """Run the KVM cmd and check for errors
|
704 | 76431533 | Guido Trotter |
|
705 | 76431533 | Guido Trotter | @type name: string
|
706 | 76431533 | Guido Trotter | @param name: instance name
|
707 | 76431533 | Guido Trotter | @type kvm_cmd: list of strings
|
708 | 76431533 | Guido Trotter | @param kvm_cmd: runcmd input for kvm
|
709 | 5d9bfd87 | Apollon Oikonomopoulos | @type tap_fds: list of int
|
710 | 5d9bfd87 | Apollon Oikonomopoulos | @param tap_fds: fds of tap devices opened by Ganeti
|
711 | 76431533 | Guido Trotter |
|
712 | 76431533 | Guido Trotter | """
|
713 | 5d9bfd87 | Apollon Oikonomopoulos | try:
|
714 | 5d9bfd87 | Apollon Oikonomopoulos | result = utils.RunCmd(kvm_cmd, noclose_fds=tap_fds) |
715 | 5d9bfd87 | Apollon Oikonomopoulos | finally:
|
716 | 5d9bfd87 | Apollon Oikonomopoulos | for fd in tap_fds: |
717 | 5d9bfd87 | Apollon Oikonomopoulos | utils_wrapper.CloseFdNoError(fd) |
718 | 5d9bfd87 | Apollon Oikonomopoulos | |
719 | 76431533 | Guido Trotter | if result.failed:
|
720 | 76431533 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s: %s (%s)" % |
721 | 76431533 | Guido Trotter | (name, result.fail_reason, result.output)) |
722 | 76431533 | Guido Trotter | if not self._InstancePidAlive(name)[2]: |
723 | 76431533 | Guido Trotter | raise errors.HypervisorError("Failed to start instance %s" % name) |
724 | 76431533 | Guido Trotter | |
725 | 30e42c4e | Guido Trotter | def _ExecuteKVMRuntime(self, instance, kvm_runtime, incoming=None): |
726 | ee5f20b0 | Guido Trotter | """Execute a KVM cmd, after completing it with some last minute data
|
727 | ee5f20b0 | Guido Trotter |
|
728 | 30e42c4e | Guido Trotter | @type incoming: tuple of strings
|
729 | 30e42c4e | Guido Trotter | @param incoming: (target_host_ip, port)
|
730 | 30e42c4e | Guido Trotter |
|
731 | ee5f20b0 | Guido Trotter | """
|
732 | 297e6e53 | Guido Trotter | # Small _ExecuteKVMRuntime hv parameters programming howto:
|
733 | 297e6e53 | Guido Trotter | # - conf_hvp contains the parameters as configured on ganeti. they might
|
734 | 297e6e53 | Guido Trotter | # have changed since the instance started; only use them if the change
|
735 | 297e6e53 | Guido Trotter | # won't affect the inside of the instance (which hasn't been rebooted).
|
736 | 297e6e53 | Guido Trotter | # - up_hvp contains the parameters as they were when the instance was
|
737 | 297e6e53 | Guido Trotter | # started, plus any new parameter which has been added between ganeti
|
738 | 297e6e53 | Guido Trotter | # versions: it is paramount that those default to a value which won't
|
739 | 297e6e53 | Guido Trotter | # affect the inside of the instance as well.
|
740 | 297e6e53 | Guido Trotter | conf_hvp = instance.hvparams |
741 | 5905901c | Iustin Pop | name = instance.name |
742 | 5905901c | Iustin Pop | self._CheckDown(name)
|
743 | ee5f20b0 | Guido Trotter | |
744 | ee5f20b0 | Guido Trotter | temp_files = [] |
745 | ee5f20b0 | Guido Trotter | |
746 | 297e6e53 | Guido Trotter | kvm_cmd, kvm_nics, up_hvp = kvm_runtime |
747 | 297e6e53 | Guido Trotter | up_hvp = objects.FillDict(conf_hvp, up_hvp) |
748 | ee5f20b0 | Guido Trotter | |
749 | 4b784cf8 | Miguel Di Ciurcio Filho | kvm_version = self._GetKVMVersion()
|
750 | 4b784cf8 | Miguel Di Ciurcio Filho | if kvm_version:
|
751 | 049383d9 | Adeodato Simo | _, v_major, v_min, _ = kvm_version |
752 | 4b784cf8 | Miguel Di Ciurcio Filho | else:
|
753 | 4b784cf8 | Miguel Di Ciurcio Filho | raise errors.HypervisorError("Unable to get KVM version") |
754 | 4b784cf8 | Miguel Di Ciurcio Filho | |
755 | 297e6e53 | Guido Trotter | # We know it's safe to run as a different user upon migration, so we'll use
|
756 | 297e6e53 | Guido Trotter | # the latest conf, from conf_hvp.
|
757 | 297e6e53 | Guido Trotter | security_model = conf_hvp[constants.HV_SECURITY_MODEL] |
758 | cef34868 | Guido Trotter | if security_model == constants.HT_SM_USER:
|
759 | 297e6e53 | Guido Trotter | kvm_cmd.extend(["-runas", conf_hvp[constants.HV_SECURITY_DOMAIN]])
|
760 | cef34868 | Guido Trotter | |
761 | 297e6e53 | Guido Trotter | # We have reasons to believe changing something like the nic driver/type
|
762 | 297e6e53 | Guido Trotter | # upon migration won't exactly fly with the instance kernel, so for nic
|
763 | 297e6e53 | Guido Trotter | # related parameters we'll use up_hvp
|
764 | 5d9bfd87 | Apollon Oikonomopoulos | tapfds = [] |
765 | 5d9bfd87 | Apollon Oikonomopoulos | taps = [] |
766 | ee5f20b0 | Guido Trotter | if not kvm_nics: |
767 | fbe27e2b | Guido Trotter | kvm_cmd.extend(["-net", "none"]) |
768 | ee5f20b0 | Guido Trotter | else:
|
769 | 5d9bfd87 | Apollon Oikonomopoulos | vnet_hdr = False
|
770 | fbe27e2b | Guido Trotter | tap_extra = ""
|
771 | 297e6e53 | Guido Trotter | nic_type = up_hvp[constants.HV_NIC_TYPE] |
772 | 37f88dc6 | Guido Trotter | if nic_type == constants.HT_NIC_PARAVIRTUAL:
|
773 | 4b784cf8 | Miguel Di Ciurcio Filho | # From version 0.12.0, kvm uses a new sintax for network configuration.
|
774 | 049383d9 | Adeodato Simo | if (v_major, v_min) >= (0, 12): |
775 | 4b784cf8 | Miguel Di Ciurcio Filho | nic_model = "virtio-net-pci"
|
776 | 5d9bfd87 | Apollon Oikonomopoulos | vnet_hdr = True
|
777 | 4b784cf8 | Miguel Di Ciurcio Filho | else:
|
778 | 4b784cf8 | Miguel Di Ciurcio Filho | nic_model = "virtio"
|
779 | 4b784cf8 | Miguel Di Ciurcio Filho | |
780 | 297e6e53 | Guido Trotter | if up_hvp[constants.HV_VHOST_NET]:
|
781 | 4b784cf8 | Miguel Di Ciurcio Filho | # vhost_net is only available from version 0.13.0 or newer
|
782 | 049383d9 | Adeodato Simo | if (v_major, v_min) >= (0, 13): |
783 | 4b784cf8 | Miguel Di Ciurcio Filho | tap_extra = ",vhost=on"
|
784 | 4b784cf8 | Miguel Di Ciurcio Filho | else:
|
785 | 4b784cf8 | Miguel Di Ciurcio Filho | raise errors.HypervisorError("vhost_net is configured" |
786 | 4b784cf8 | Miguel Di Ciurcio Filho | " but it is not available")
|
787 | 37f88dc6 | Guido Trotter | else:
|
788 | 4b784cf8 | Miguel Di Ciurcio Filho | nic_model = nic_type |
789 | 37f88dc6 | Guido Trotter | |
790 | ee5f20b0 | Guido Trotter | for nic_seq, nic in enumerate(kvm_nics): |
791 | 5d9bfd87 | Apollon Oikonomopoulos | tapname, tapfd = _OpenTap(vnet_hdr) |
792 | 5d9bfd87 | Apollon Oikonomopoulos | tapfds.append(tapfd) |
793 | 5d9bfd87 | Apollon Oikonomopoulos | taps.append(tapname) |
794 | 049383d9 | Adeodato Simo | if (v_major, v_min) >= (0, 12): |
795 | 4b784cf8 | Miguel Di Ciurcio Filho | nic_val = "%s,mac=%s,netdev=netdev%s" % (nic_model, nic.mac, nic_seq)
|
796 | 5d9bfd87 | Apollon Oikonomopoulos | tap_val = "type=tap,id=netdev%s,fd=%d%s" % (nic_seq, tapfd, tap_extra)
|
797 | 4b784cf8 | Miguel Di Ciurcio Filho | kvm_cmd.extend(["-netdev", tap_val, "-device", nic_val]) |
798 | 4b784cf8 | Miguel Di Ciurcio Filho | else:
|
799 | 049383d9 | Adeodato Simo | nic_val = "nic,vlan=%s,macaddr=%s,model=%s" % (nic_seq,
|
800 | 049383d9 | Adeodato Simo | nic.mac, nic_model) |
801 | 5d9bfd87 | Apollon Oikonomopoulos | tap_val = "tap,vlan=%s,fd=%d" % (nic_seq, tapfd)
|
802 | 4b784cf8 | Miguel Di Ciurcio Filho | kvm_cmd.extend(["-net", tap_val, "-net", nic_val]) |
803 | ee5f20b0 | Guido Trotter | |
804 | 30e42c4e | Guido Trotter | if incoming:
|
805 | 30e42c4e | Guido Trotter | target, port = incoming |
806 | 30e42c4e | Guido Trotter | kvm_cmd.extend(['-incoming', 'tcp:%s:%s' % (target, port)]) |
807 | 30e42c4e | Guido Trotter | |
808 | 297e6e53 | Guido Trotter | # Changing the vnc password doesn't bother the guest that much. At most it
|
809 | 297e6e53 | Guido Trotter | # will surprise people who connect to it. Whether positively or negatively
|
810 | 297e6e53 | Guido Trotter | # it's debatable.
|
811 | 297e6e53 | Guido Trotter | vnc_pwd_file = conf_hvp[constants.HV_VNC_PASSWORD_FILE] |
812 | 6e6bb8d5 | Guido Trotter | vnc_pwd = None
|
813 | 6e6bb8d5 | Guido Trotter | if vnc_pwd_file:
|
814 | 6e6bb8d5 | Guido Trotter | try:
|
815 | 682f7601 | Guido Trotter | vnc_pwd = utils.ReadOneLineFile(vnc_pwd_file, strict=True)
|
816 | 6e6bb8d5 | Guido Trotter | except EnvironmentError, err: |
817 | 6e6bb8d5 | Guido Trotter | raise errors.HypervisorError("Failed to open VNC password file %s: %s" |
818 | 6e6bb8d5 | Guido Trotter | % (vnc_pwd_file, err)) |
819 | 6e6bb8d5 | Guido Trotter | |
820 | 297e6e53 | Guido Trotter | if conf_hvp[constants.HV_KVM_USE_CHROOT]:
|
821 | 547a63b7 | Balazs Lecz | utils.EnsureDirs([(self._InstanceChrootDir(name),
|
822 | 547a63b7 | Balazs Lecz | constants.SECURE_DIR_MODE)]) |
823 | 547a63b7 | Balazs Lecz | |
824 | 5d9bfd87 | Apollon Oikonomopoulos | if not incoming: |
825 | 5d9bfd87 | Apollon Oikonomopoulos | # Configure the network now for starting instances, during
|
826 | 5d9bfd87 | Apollon Oikonomopoulos | # FinalizeMigration for incoming instances
|
827 | 5d9bfd87 | Apollon Oikonomopoulos | for nic_seq, nic in enumerate(kvm_nics): |
828 | 5d9bfd87 | Apollon Oikonomopoulos | self._ConfigureNIC(instance, nic_seq, nic, taps[nic_seq])
|
829 | 5d9bfd87 | Apollon Oikonomopoulos | |
830 | 76431533 | Guido Trotter | if security_model == constants.HT_SM_POOL:
|
831 | 76431533 | Guido Trotter | ss = ssconf.SimpleStore() |
832 | 76431533 | Guido Trotter | uid_pool = uidpool.ParseUidPool(ss.GetUidPool(), separator="\n")
|
833 | 76431533 | Guido Trotter | all_uids = set(uidpool.ExpandUidPool(uid_pool))
|
834 | 76431533 | Guido Trotter | uid = uidpool.RequestUnusedUid(all_uids) |
835 | 76431533 | Guido Trotter | try:
|
836 | 76431533 | Guido Trotter | username = pwd.getpwuid(uid.GetUid()).pw_name |
837 | 76431533 | Guido Trotter | kvm_cmd.extend(["-runas", username])
|
838 | 5d9bfd87 | Apollon Oikonomopoulos | self._RunKVMCmd(name, kvm_cmd, tapfds)
|
839 | 76431533 | Guido Trotter | except:
|
840 | 76431533 | Guido Trotter | uidpool.ReleaseUid(uid) |
841 | 76431533 | Guido Trotter | raise
|
842 | 76431533 | Guido Trotter | else:
|
843 | 76431533 | Guido Trotter | uid.Unlock() |
844 | 76431533 | Guido Trotter | utils.WriteFile(self._InstanceUidFile(name), data=str(uid)) |
845 | 76431533 | Guido Trotter | else:
|
846 | 5d9bfd87 | Apollon Oikonomopoulos | self._RunKVMCmd(name, kvm_cmd, tapfds)
|
847 | 5d9bfd87 | Apollon Oikonomopoulos | |
848 | 5d9bfd87 | Apollon Oikonomopoulos | utils.EnsureDirs([(self._InstanceNICDir(instance.name),
|
849 | 5d9bfd87 | Apollon Oikonomopoulos | constants.RUN_DIRS_MODE)]) |
850 | 5d9bfd87 | Apollon Oikonomopoulos | for nic_seq, tap in enumerate(taps): |
851 | 5d9bfd87 | Apollon Oikonomopoulos | utils.WriteFile(self._InstanceNICFile(instance.name, nic_seq),
|
852 | 5d9bfd87 | Apollon Oikonomopoulos | data=tap) |
853 | eb58f9b1 | Guido Trotter | |
854 | 6e6bb8d5 | Guido Trotter | if vnc_pwd:
|
855 | 6e6bb8d5 | Guido Trotter | change_cmd = 'change vnc password %s' % vnc_pwd
|
856 | 6e6bb8d5 | Guido Trotter | self._CallMonitorCommand(instance.name, change_cmd)
|
857 | 6e6bb8d5 | Guido Trotter | |
858 | 08137f9e | Iustin Pop | for filename in temp_files: |
859 | 08137f9e | Iustin Pop | utils.RemoveFile(filename) |
860 | eb58f9b1 | Guido Trotter | |
861 | 07813a9e | Iustin Pop | def StartInstance(self, instance, block_devices): |
862 | ee5f20b0 | Guido Trotter | """Start an instance.
|
863 | ee5f20b0 | Guido Trotter |
|
864 | ee5f20b0 | Guido Trotter | """
|
865 | 5905901c | Iustin Pop | self._CheckDown(instance.name)
|
866 | 07813a9e | Iustin Pop | kvm_runtime = self._GenerateKVMRuntime(instance, block_devices)
|
867 | 38e250ba | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
868 | ee5f20b0 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime)
|
869 | ee5f20b0 | Guido Trotter | |
870 | 6567aff3 | Guido Trotter | def _CallMonitorCommand(self, instance_name, command): |
871 | 6567aff3 | Guido Trotter | """Invoke a command on the instance monitor.
|
872 | 6567aff3 | Guido Trotter |
|
873 | 6567aff3 | Guido Trotter | """
|
874 | 6567aff3 | Guido Trotter | socat = ("echo %s | %s STDIO UNIX-CONNECT:%s" %
|
875 | 6567aff3 | Guido Trotter | (utils.ShellQuote(command), |
876 | 6567aff3 | Guido Trotter | constants.SOCAT_PATH, |
877 | 6567aff3 | Guido Trotter | utils.ShellQuote(self._InstanceMonitor(instance_name))))
|
878 | 6567aff3 | Guido Trotter | result = utils.RunCmd(socat) |
879 | 6567aff3 | Guido Trotter | if result.failed:
|
880 | 6567aff3 | Guido Trotter | msg = ("Failed to send command '%s' to instance %s."
|
881 | 6567aff3 | Guido Trotter | " output: %s, error: %s, fail_reason: %s" %
|
882 | 9798fcae | Guido Trotter | (command, instance_name, |
883 | 9798fcae | Guido Trotter | result.stdout, result.stderr, result.fail_reason)) |
884 | 6567aff3 | Guido Trotter | raise errors.HypervisorError(msg)
|
885 | 6567aff3 | Guido Trotter | |
886 | 6567aff3 | Guido Trotter | return result
|
887 | 6567aff3 | Guido Trotter | |
888 | b52d85c1 | Guido Trotter | @classmethod
|
889 | b52d85c1 | Guido Trotter | def _GetKVMVersion(cls): |
890 | b52d85c1 | Guido Trotter | """Return the installed KVM version
|
891 | b52d85c1 | Guido Trotter |
|
892 | b52d85c1 | Guido Trotter | @return: (version, v_maj, v_min, v_rev), or None
|
893 | b52d85c1 | Guido Trotter |
|
894 | b52d85c1 | Guido Trotter | """
|
895 | b52d85c1 | Guido Trotter | result = utils.RunCmd([constants.KVM_PATH, "--help"])
|
896 | b52d85c1 | Guido Trotter | if result.failed:
|
897 | b52d85c1 | Guido Trotter | return None |
898 | b52d85c1 | Guido Trotter | match = cls._VERSION_RE.search(result.output.splitlines()[0])
|
899 | b52d85c1 | Guido Trotter | if not match: |
900 | b52d85c1 | Guido Trotter | return None |
901 | 3f2eba25 | Miguel Di Ciurcio Filho | |
902 | 3f2eba25 | Miguel Di Ciurcio Filho | return (match.group(0), int(match.group(1)), int(match.group(2)), |
903 | 3f2eba25 | Miguel Di Ciurcio Filho | int(match.group(3))) |
904 | b52d85c1 | Guido Trotter | |
905 | bbcf7ad0 | Iustin Pop | def StopInstance(self, instance, force=False, retry=False, name=None): |
906 | eb58f9b1 | Guido Trotter | """Stop an instance.
|
907 | eb58f9b1 | Guido Trotter |
|
908 | eb58f9b1 | Guido Trotter | """
|
909 | bbcf7ad0 | Iustin Pop | if name is not None and not force: |
910 | bbcf7ad0 | Iustin Pop | raise errors.HypervisorError("Cannot shutdown cleanly by name only") |
911 | bbcf7ad0 | Iustin Pop | if name is None: |
912 | bbcf7ad0 | Iustin Pop | name = instance.name |
913 | bbcf7ad0 | Iustin Pop | acpi = instance.hvparams[constants.HV_ACPI] |
914 | bbcf7ad0 | Iustin Pop | else:
|
915 | bbcf7ad0 | Iustin Pop | acpi = False
|
916 | 8904b35c | Guido Trotter | _, pid, alive = self._InstancePidAlive(name)
|
917 | 1f8b3a27 | Guido Trotter | if pid > 0 and alive: |
918 | bbcf7ad0 | Iustin Pop | if force or not acpi: |
919 | eb58f9b1 | Guido Trotter | utils.KillProcess(pid) |
920 | eb58f9b1 | Guido Trotter | else:
|
921 | bbcf7ad0 | Iustin Pop | self._CallMonitorCommand(name, 'system_powerdown') |
922 | eb58f9b1 | Guido Trotter | |
923 | 8904b35c | Guido Trotter | def CleanupInstance(self, instance_name): |
924 | 8904b35c | Guido Trotter | """Cleanup after a stopped instance
|
925 | 8904b35c | Guido Trotter |
|
926 | 8904b35c | Guido Trotter | """
|
927 | 8904b35c | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance_name)
|
928 | 8904b35c | Guido Trotter | if pid > 0 and alive: |
929 | 8904b35c | Guido Trotter | raise errors.HypervisorError("Cannot cleanup a live instance") |
930 | 8904b35c | Guido Trotter | self._RemoveInstanceRuntimeFiles(pidfile, instance_name)
|
931 | eb58f9b1 | Guido Trotter | |
932 | eb58f9b1 | Guido Trotter | def RebootInstance(self, instance): |
933 | eb58f9b1 | Guido Trotter | """Reboot an instance.
|
934 | eb58f9b1 | Guido Trotter |
|
935 | eb58f9b1 | Guido Trotter | """
|
936 | eb58f9b1 | Guido Trotter | # For some reason if we do a 'send-key ctrl-alt-delete' to the control
|
937 | eb58f9b1 | Guido Trotter | # socket the instance will stop, but now power up again. So we'll resort
|
938 | eb58f9b1 | Guido Trotter | # to shutdown and restart.
|
939 | 1122eb25 | Iustin Pop | _, _, alive = self._InstancePidAlive(instance.name)
|
940 | 1f8b3a27 | Guido Trotter | if not alive: |
941 | 78411c60 | Iustin Pop | raise errors.HypervisorError("Failed to reboot instance %s:" |
942 | 78411c60 | Iustin Pop | " not running" % instance.name)
|
943 | f02881e0 | Guido Trotter | # StopInstance will delete the saved KVM runtime so:
|
944 | f02881e0 | Guido Trotter | # ...first load it...
|
945 | f02881e0 | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance)
|
946 | f02881e0 | Guido Trotter | # ...now we can safely call StopInstance...
|
947 | f02881e0 | Guido Trotter | if not self.StopInstance(instance): |
948 | f02881e0 | Guido Trotter | self.StopInstance(instance, force=True) |
949 | f02881e0 | Guido Trotter | # ...and finally we can save it again, and execute it...
|
950 | f02881e0 | Guido Trotter | self._SaveKVMRuntime(instance, kvm_runtime)
|
951 | f02881e0 | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime)
|
952 | eb58f9b1 | Guido Trotter | |
953 | 30e42c4e | Guido Trotter | def MigrationInfo(self, instance): |
954 | 30e42c4e | Guido Trotter | """Get instance information to perform a migration.
|
955 | 30e42c4e | Guido Trotter |
|
956 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
957 | 30e42c4e | Guido Trotter | @param instance: instance to be migrated
|
958 | 30e42c4e | Guido Trotter | @rtype: string
|
959 | 30e42c4e | Guido Trotter | @return: content of the KVM runtime file
|
960 | 30e42c4e | Guido Trotter |
|
961 | 30e42c4e | Guido Trotter | """
|
962 | 30e42c4e | Guido Trotter | return self._ReadKVMRuntime(instance.name) |
963 | 30e42c4e | Guido Trotter | |
964 | 30e42c4e | Guido Trotter | def AcceptInstance(self, instance, info, target): |
965 | 30e42c4e | Guido Trotter | """Prepare to accept an instance.
|
966 | 30e42c4e | Guido Trotter |
|
967 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
968 | 30e42c4e | Guido Trotter | @param instance: instance to be accepted
|
969 | 30e42c4e | Guido Trotter | @type info: string
|
970 | 30e42c4e | Guido Trotter | @param info: content of the KVM runtime file on the source node
|
971 | 30e42c4e | Guido Trotter | @type target: string
|
972 | 30e42c4e | Guido Trotter | @param target: target host (usually ip), on this node
|
973 | 30e42c4e | Guido Trotter |
|
974 | 30e42c4e | Guido Trotter | """
|
975 | 30e42c4e | Guido Trotter | kvm_runtime = self._LoadKVMRuntime(instance, serialized_runtime=info)
|
976 | 641ae041 | Iustin Pop | incoming_address = (target, instance.hvparams[constants.HV_MIGRATION_PORT]) |
977 | 30e42c4e | Guido Trotter | self._ExecuteKVMRuntime(instance, kvm_runtime, incoming=incoming_address)
|
978 | 30e42c4e | Guido Trotter | |
979 | 30e42c4e | Guido Trotter | def FinalizeMigration(self, instance, info, success): |
980 | 30e42c4e | Guido Trotter | """Finalize an instance migration.
|
981 | 30e42c4e | Guido Trotter |
|
982 | 30e42c4e | Guido Trotter | Stop the incoming mode KVM.
|
983 | 30e42c4e | Guido Trotter |
|
984 | 30e42c4e | Guido Trotter | @type instance: L{objects.Instance}
|
985 | fea922fa | Guido Trotter | @param instance: instance whose migration is being finalized
|
986 | 30e42c4e | Guido Trotter |
|
987 | 30e42c4e | Guido Trotter | """
|
988 | 30e42c4e | Guido Trotter | if success:
|
989 | 5d9bfd87 | Apollon Oikonomopoulos | kvm_runtime = self._LoadKVMRuntime(instance, serialized_runtime=info)
|
990 | 5d9bfd87 | Apollon Oikonomopoulos | kvm_nics = kvm_runtime[1]
|
991 | 5d9bfd87 | Apollon Oikonomopoulos | |
992 | 5d9bfd87 | Apollon Oikonomopoulos | for nic_seq, nic in enumerate(kvm_nics): |
993 | 5d9bfd87 | Apollon Oikonomopoulos | try:
|
994 | 5d9bfd87 | Apollon Oikonomopoulos | tap = utils.ReadFile(self._InstanceNICFile(instance.name, nic_seq))
|
995 | 5d9bfd87 | Apollon Oikonomopoulos | except EnvironmentError, err: |
996 | 5d9bfd87 | Apollon Oikonomopoulos | logging.warning("Failed to find host interface for %s NIC #%d: %s",
|
997 | 5d9bfd87 | Apollon Oikonomopoulos | instance.name, nic_seq, str(err))
|
998 | 5d9bfd87 | Apollon Oikonomopoulos | continue
|
999 | 5d9bfd87 | Apollon Oikonomopoulos | try:
|
1000 | 5d9bfd87 | Apollon Oikonomopoulos | self._ConfigureNIC(instance, nic_seq, nic, tap)
|
1001 | 5d9bfd87 | Apollon Oikonomopoulos | except errors.HypervisorError, err:
|
1002 | 5d9bfd87 | Apollon Oikonomopoulos | logging.warning(str(err))
|
1003 | 5d9bfd87 | Apollon Oikonomopoulos | |
1004 | 30e42c4e | Guido Trotter | self._WriteKVMRuntime(instance.name, info)
|
1005 | 30e42c4e | Guido Trotter | else:
|
1006 | 30e42c4e | Guido Trotter | self.StopInstance(instance, force=True) |
1007 | 30e42c4e | Guido Trotter | |
1008 | 58d38b02 | Iustin Pop | def MigrateInstance(self, instance, target, live): |
1009 | 30e42c4e | Guido Trotter | """Migrate an instance to a target node.
|
1010 | 30e42c4e | Guido Trotter |
|
1011 | 30e42c4e | Guido Trotter | The migration will not be attempted if the instance is not
|
1012 | 30e42c4e | Guido Trotter | currently running.
|
1013 | 30e42c4e | Guido Trotter |
|
1014 | 58d38b02 | Iustin Pop | @type instance: L{objects.Instance}
|
1015 | 58d38b02 | Iustin Pop | @param instance: the instance to be migrated
|
1016 | 30e42c4e | Guido Trotter | @type target: string
|
1017 | 30e42c4e | Guido Trotter | @param target: ip address of the target node
|
1018 | 30e42c4e | Guido Trotter | @type live: boolean
|
1019 | 30e42c4e | Guido Trotter | @param live: perform a live migration
|
1020 | 30e42c4e | Guido Trotter |
|
1021 | 30e42c4e | Guido Trotter | """
|
1022 | 58d38b02 | Iustin Pop | instance_name = instance.name |
1023 | 50716be0 | Iustin Pop | port = instance.hvparams[constants.HV_MIGRATION_PORT] |
1024 | 30e42c4e | Guido Trotter | pidfile, pid, alive = self._InstancePidAlive(instance_name)
|
1025 | 30e42c4e | Guido Trotter | if not alive: |
1026 | 30e42c4e | Guido Trotter | raise errors.HypervisorError("Instance not running, cannot migrate") |
1027 | 30e42c4e | Guido Trotter | |
1028 | 30e42c4e | Guido Trotter | if not live: |
1029 | 30e42c4e | Guido Trotter | self._CallMonitorCommand(instance_name, 'stop') |
1030 | 30e42c4e | Guido Trotter | |
1031 | e43d4f9f | Apollon Oikonomopoulos | migrate_command = ('migrate_set_speed %dm' %
|
1032 | e43d4f9f | Apollon Oikonomopoulos | instance.hvparams[constants.HV_MIGRATION_BANDWIDTH]) |
1033 | e43d4f9f | Apollon Oikonomopoulos | self._CallMonitorCommand(instance_name, migrate_command)
|
1034 | e43d4f9f | Apollon Oikonomopoulos | |
1035 | e43d4f9f | Apollon Oikonomopoulos | migrate_command = ('migrate_set_downtime %dms' %
|
1036 | e43d4f9f | Apollon Oikonomopoulos | instance.hvparams[constants.HV_MIGRATION_DOWNTIME]) |
1037 | e43d4f9f | Apollon Oikonomopoulos | self._CallMonitorCommand(instance_name, migrate_command)
|
1038 | e43d4f9f | Apollon Oikonomopoulos | |
1039 | 641ae041 | Iustin Pop | migrate_command = 'migrate -d tcp:%s:%s' % (target, port)
|
1040 | 30e42c4e | Guido Trotter | self._CallMonitorCommand(instance_name, migrate_command)
|
1041 | 30e42c4e | Guido Trotter | |
1042 | 30e42c4e | Guido Trotter | info_command = 'info migrate'
|
1043 | 30e42c4e | Guido Trotter | done = False
|
1044 | c4e388a5 | Guido Trotter | broken_answers = 0
|
1045 | 30e42c4e | Guido Trotter | while not done: |
1046 | 30e42c4e | Guido Trotter | result = self._CallMonitorCommand(instance_name, info_command)
|
1047 | 30e42c4e | Guido Trotter | match = self._MIGRATION_STATUS_RE.search(result.stdout)
|
1048 | 30e42c4e | Guido Trotter | if not match: |
1049 | c4e388a5 | Guido Trotter | broken_answers += 1
|
1050 | c4e388a5 | Guido Trotter | if not result.stdout: |
1051 | c4e388a5 | Guido Trotter | logging.info("KVM: empty 'info migrate' result")
|
1052 | c4e388a5 | Guido Trotter | else:
|
1053 | e4dd2299 | Guido Trotter | logging.warning("KVM: unknown 'info migrate' result: %s",
|
1054 | c4e388a5 | Guido Trotter | result.stdout) |
1055 | c4e388a5 | Guido Trotter | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
1056 | 30e42c4e | Guido Trotter | else:
|
1057 | 30e42c4e | Guido Trotter | status = match.group(1)
|
1058 | 30e42c4e | Guido Trotter | if status == 'completed': |
1059 | 30e42c4e | Guido Trotter | done = True
|
1060 | 30e42c4e | Guido Trotter | elif status == 'active': |
1061 | c4e388a5 | Guido Trotter | # reset the broken answers count
|
1062 | c4e388a5 | Guido Trotter | broken_answers = 0
|
1063 | c4e388a5 | Guido Trotter | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
1064 | c087266c | Guido Trotter | elif status == 'failed' or status == 'cancelled': |
1065 | c087266c | Guido Trotter | if not live: |
1066 | c087266c | Guido Trotter | self._CallMonitorCommand(instance_name, 'cont') |
1067 | c087266c | Guido Trotter | raise errors.HypervisorError("Migration %s at the kvm level" % |
1068 | c087266c | Guido Trotter | status) |
1069 | 30e42c4e | Guido Trotter | else:
|
1070 | c4e388a5 | Guido Trotter | logging.warning("KVM: unknown migration status '%s'", status)
|
1071 | c4e388a5 | Guido Trotter | broken_answers += 1
|
1072 | c4e388a5 | Guido Trotter | time.sleep(self._MIGRATION_INFO_RETRY_DELAY)
|
1073 | c4e388a5 | Guido Trotter | if broken_answers >= self._MIGRATION_INFO_MAX_BAD_ANSWERS: |
1074 | c4e388a5 | Guido Trotter | raise errors.HypervisorError("Too many 'info migrate' broken answers") |
1075 | 30e42c4e | Guido Trotter | |
1076 | 30e42c4e | Guido Trotter | utils.KillProcess(pid) |
1077 | 7b381438 | Guido Trotter | self._RemoveInstanceRuntimeFiles(pidfile, instance_name)
|
1078 | 30e42c4e | Guido Trotter | |
1079 | eb58f9b1 | Guido Trotter | def GetNodeInfo(self): |
1080 | eb58f9b1 | Guido Trotter | """Return information about the node.
|
1081 | eb58f9b1 | Guido Trotter |
|
1082 | 572e52bf | Iustin Pop | This is just a wrapper over the base GetLinuxNodeInfo method.
|
1083 | 572e52bf | Iustin Pop |
|
1084 | c41eea6e | Iustin Pop | @return: a dict with the following keys (values in MiB):
|
1085 | c41eea6e | Iustin Pop | - memory_total: the total memory size on the node
|
1086 | c41eea6e | Iustin Pop | - memory_free: the available memory on the node for instances
|
1087 | c41eea6e | Iustin Pop | - memory_dom0: the memory used by the node itself, if available
|
1088 | eb58f9b1 | Guido Trotter |
|
1089 | eb58f9b1 | Guido Trotter | """
|
1090 | 572e52bf | Iustin Pop | return self.GetLinuxNodeInfo() |
1091 | eb58f9b1 | Guido Trotter | |
1092 | 637ce7f9 | Guido Trotter | @classmethod
|
1093 | 55cc0a44 | Michael Hanselmann | def GetInstanceConsole(cls, instance, hvparams, beparams): |
1094 | eb58f9b1 | Guido Trotter | """Return a command for connecting to the console of an instance.
|
1095 | eb58f9b1 | Guido Trotter |
|
1096 | eb58f9b1 | Guido Trotter | """
|
1097 | a2faf9ee | Guido Trotter | if hvparams[constants.HV_SERIAL_CONSOLE]:
|
1098 | 55cc0a44 | Michael Hanselmann | cmd = [constants.SOCAT_PATH, |
1099 | 55cc0a44 | Michael Hanselmann | "STDIO,%s" % cls._SocatUnixConsoleParams(),
|
1100 | 55cc0a44 | Michael Hanselmann | "UNIX-CONNECT:%s" % cls._InstanceSerial(instance.name)]
|
1101 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
1102 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_SSH, |
1103 | 55cc0a44 | Michael Hanselmann | host=instance.primary_node, |
1104 | 55cc0a44 | Michael Hanselmann | user=constants.GANETI_RUNAS, |
1105 | 55cc0a44 | Michael Hanselmann | command=cmd) |
1106 | 3be34f57 | Guido Trotter | |
1107 | 3be34f57 | Guido Trotter | vnc_bind_address = hvparams[constants.HV_VNC_BIND_ADDRESS] |
1108 | 55cc0a44 | Michael Hanselmann | if vnc_bind_address and instance.network_port > constants.VNC_BASE_PORT: |
1109 | 55cc0a44 | Michael Hanselmann | display = instance.network_port - constants.VNC_BASE_PORT |
1110 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
1111 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_VNC, |
1112 | 55cc0a44 | Michael Hanselmann | host=vnc_bind_address, |
1113 | 55cc0a44 | Michael Hanselmann | port=instance.network_port, |
1114 | 55cc0a44 | Michael Hanselmann | display=display) |
1115 | 55cc0a44 | Michael Hanselmann | |
1116 | 55cc0a44 | Michael Hanselmann | return objects.InstanceConsole(instance=instance.name,
|
1117 | 55cc0a44 | Michael Hanselmann | kind=constants.CONS_MESSAGE, |
1118 | 55cc0a44 | Michael Hanselmann | message=("No serial shell for instance %s" %
|
1119 | 55cc0a44 | Michael Hanselmann | instance.name)) |
1120 | eb58f9b1 | Guido Trotter | |
1121 | eb58f9b1 | Guido Trotter | def Verify(self): |
1122 | eb58f9b1 | Guido Trotter | """Verify the hypervisor.
|
1123 | eb58f9b1 | Guido Trotter |
|
1124 | eb58f9b1 | Guido Trotter | Check that the binary exists.
|
1125 | eb58f9b1 | Guido Trotter |
|
1126 | eb58f9b1 | Guido Trotter | """
|
1127 | eb58f9b1 | Guido Trotter | if not os.path.exists(constants.KVM_PATH): |
1128 | eb58f9b1 | Guido Trotter | return "The kvm binary ('%s') does not exist." % constants.KVM_PATH |
1129 | 14aa53cb | Guido Trotter | if not os.path.exists(constants.SOCAT_PATH): |
1130 | 14aa53cb | Guido Trotter | return "The socat binary ('%s') does not exist." % constants.SOCAT_PATH |
1131 | 14aa53cb | Guido Trotter | |
1132 | 6b5605e8 | Iustin Pop | @classmethod
|
1133 | 6b5605e8 | Iustin Pop | def CheckParameterSyntax(cls, hvparams): |
1134 | 6b5605e8 | Iustin Pop | """Check the given parameters for validity.
|
1135 | 6b5605e8 | Iustin Pop |
|
1136 | 6b5605e8 | Iustin Pop | @type hvparams: dict
|
1137 | 6b5605e8 | Iustin Pop | @param hvparams: dictionary with parameter names/value
|
1138 | 6b5605e8 | Iustin Pop | @raise errors.HypervisorError: when a parameter is not valid
|
1139 | 6b5605e8 | Iustin Pop |
|
1140 | 6b5605e8 | Iustin Pop | """
|
1141 | 47387b1e | Guido Trotter | super(KVMHypervisor, cls).CheckParameterSyntax(hvparams)
|
1142 | 6b5605e8 | Iustin Pop | |
1143 | df5ab9f0 | Guido Trotter | kernel_path = hvparams[constants.HV_KERNEL_PATH] |
1144 | df5ab9f0 | Guido Trotter | if kernel_path:
|
1145 | df5ab9f0 | Guido Trotter | if not hvparams[constants.HV_ROOT_PATH]: |
1146 | 205ab586 | Iustin Pop | raise errors.HypervisorError("Need a root partition for the instance," |
1147 | 205ab586 | Iustin Pop | " if a kernel is defined")
|
1148 | 6b5605e8 | Iustin Pop | |
1149 | 205ab586 | Iustin Pop | if (hvparams[constants.HV_VNC_X509_VERIFY] and |
1150 | 205ab586 | Iustin Pop | not hvparams[constants.HV_VNC_X509]):
|
1151 | 205ab586 | Iustin Pop | raise errors.HypervisorError("%s must be defined, if %s is" % |
1152 | 205ab586 | Iustin Pop | (constants.HV_VNC_X509, |
1153 | 205ab586 | Iustin Pop | constants.HV_VNC_X509_VERIFY)) |
1154 | 66d5dbef | Guido Trotter | |
1155 | 66d5dbef | Guido Trotter | boot_order = hvparams[constants.HV_BOOT_ORDER] |
1156 | 205ab586 | Iustin Pop | if (boot_order == constants.HT_BO_CDROM and |
1157 | 205ab586 | Iustin Pop | not hvparams[constants.HV_CDROM_IMAGE_PATH]):
|
1158 | 835528af | Iustin Pop | raise errors.HypervisorError("Cannot boot from cdrom without an" |
1159 | 835528af | Iustin Pop | " ISO path")
|
1160 | f5118ade | Iustin Pop | |
1161 | d19d94db | Guido Trotter | security_model = hvparams[constants.HV_SECURITY_MODEL] |
1162 | d19d94db | Guido Trotter | if security_model == constants.HT_SM_USER:
|
1163 | d19d94db | Guido Trotter | if not hvparams[constants.HV_SECURITY_DOMAIN]: |
1164 | d19d94db | Guido Trotter | raise errors.HypervisorError("A security domain (user to run kvm as)" |
1165 | d19d94db | Guido Trotter | " must be specified")
|
1166 | d19d94db | Guido Trotter | elif (security_model == constants.HT_SM_NONE or |
1167 | d19d94db | Guido Trotter | security_model == constants.HT_SM_POOL): |
1168 | d19d94db | Guido Trotter | if hvparams[constants.HV_SECURITY_DOMAIN]:
|
1169 | d19d94db | Guido Trotter | raise errors.HypervisorError("Cannot have a security domain when the" |
1170 | d19d94db | Guido Trotter | " security model is 'none' or 'pool'")
|
1171 | d19d94db | Guido Trotter | |
1172 | d19d94db | Guido Trotter | @classmethod
|
1173 | d19d94db | Guido Trotter | def ValidateParameters(cls, hvparams): |
1174 | d19d94db | Guido Trotter | """Check the given parameters for validity.
|
1175 | d19d94db | Guido Trotter |
|
1176 | d19d94db | Guido Trotter | @type hvparams: dict
|
1177 | d19d94db | Guido Trotter | @param hvparams: dictionary with parameter names/value
|
1178 | d19d94db | Guido Trotter | @raise errors.HypervisorError: when a parameter is not valid
|
1179 | d19d94db | Guido Trotter |
|
1180 | d19d94db | Guido Trotter | """
|
1181 | d19d94db | Guido Trotter | super(KVMHypervisor, cls).ValidateParameters(hvparams)
|
1182 | d19d94db | Guido Trotter | |
1183 | d19d94db | Guido Trotter | security_model = hvparams[constants.HV_SECURITY_MODEL] |
1184 | d19d94db | Guido Trotter | if security_model == constants.HT_SM_USER:
|
1185 | d19d94db | Guido Trotter | username = hvparams[constants.HV_SECURITY_DOMAIN] |
1186 | d19d94db | Guido Trotter | try:
|
1187 | 1feb39ec | Guido Trotter | pwd.getpwnam(username) |
1188 | d19d94db | Guido Trotter | except KeyError: |
1189 | d19d94db | Guido Trotter | raise errors.HypervisorError("Unknown security domain user %s" |
1190 | d19d94db | Guido Trotter | % username) |
1191 | d19d94db | Guido Trotter | |
1192 | f5118ade | Iustin Pop | @classmethod
|
1193 | f5118ade | Iustin Pop | def PowercycleNode(cls): |
1194 | f5118ade | Iustin Pop | """KVM powercycle, just a wrapper over Linux powercycle.
|
1195 | f5118ade | Iustin Pop |
|
1196 | f5118ade | Iustin Pop | """
|
1197 | f5118ade | Iustin Pop | cls.LinuxPowercycle() |