Mercurial > hgrepos > FreeBSD > ports > sysutils > local-bsdtools

annotate files/fbhyve.in @ 476:c3ad1105c746

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Implement a "kill" extra-commant for fbhyve to do an immediate poweroff of a VM
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 27 Aug 2024 22:33:57 +0200
parents 827371176fec
children 3f187ec5c4d9
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1 #!/bin/sh
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2 # -*- indent-tabs-mode: nil -*-
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3
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4 # PROVIDE: fbhyve
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5 # REQUIRE: LOGIN FILESYSTEMS
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6 # KEYWORD: shutdown nojail
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7 #
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8
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9 # @(#)%%SIMPLEVERSIONTAG%%
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10
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11 #
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12 # Add the following lines to /etc/rc.conf to enable bhyve:
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13 #
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14 # fbhyve_enable (bool): Set to "NO" by default.
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15 # Acts as default for all listed VMs.
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16 # Set it to "YES" to enable bhyve.
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17 # fbhyve_list (str): Set to "" by default.
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18 # Define the names of your VMs here.
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19 # fbhyve_tmux_session_prefix (str): All tmux session names will have this
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20 # prefix string.
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21 # fbhyve_configdir (str): Where by default config files for all VMs live.
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22 # Default: $PREFIX/etc/fbhyve
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23 #
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24 #
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25 # fbhyve_<vm>_enable (bool): Allow to enable or disable a specific VM.
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26 # Set to $fbhyve_enable by default.
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27 # fbhyve_<vm>_config (str): The bhyve configuration file to use to.
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28 # The default is $fbhyve_configdir/<vm>.conf
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29 #
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31 . /etc/rc.subr
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32
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33 name="fbhyve"
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34 desc="Manage system bhyve virtual machines"
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35 rcvar="fbhyve_enable"
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36
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37 extra_commands="kill"
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38 start_precmd="fbhyve_pre_start"
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39 stop_postcmd="fbhyve_post_stop"
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40 status_cmd="fbhyve_status"
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41 kill_cmd="fbhyve_kill"
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44 load_rc_config $name
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45
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46 : ${fbhyve_enable:="NO"}
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47 : ${fbhyve_list=}
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48 : ${fbhyve_tmux_session_prefix:="${name}_"}
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49 : ${fbhyve_configdir:="%%FBHYVE_ETCDIR%%"}
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50
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51
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52 _fbhyve_vm_exists()
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53 {
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54 local _p
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55 for _p in ${fbhyve_list}; do
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56 [ "${_p}" = "$1" ] && return 0;
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57 done
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58 return 1
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59 }
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61
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62 if [ $# -eq 2 ]; then
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63 _vm="$2"
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64 if ! _fbhyve_vm_exists "${_vm}"; then
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65 echo "ERROR: no VM named \`${_vm}' in \`fbhyve_list'" 1>&2
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66 exit 1
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67 fi
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68 echo "-- VM: ${_vm} --"
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69 _session="${fbhyve_tmux_session_prefix}${_vm}"
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70 _window="${_session}_console"
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71 eval fbhyve_enable="\${fbhyve_${_vm}_enable:-${fbhyve_enable}}"
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72 eval fbhyve_config="\${fbhyve_${_vm}_config:-\"${fbhyve_configdir}/${_vm}.conf\"}"
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73 else
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74 _ec=0
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75 _swap=$*; shift; _vmarglist=$*
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76 _vmlist=${_vmarglist:-${fbhyve_list}}
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77 set -- ${_swap}
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78 for _vm in ${_vmlist}; do
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79 "$0" "$1" "${_vm}"
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80 _vmec=$?
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81 if [ ${_vmec} -gt ${_ec} ]; then
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82 _ec=${_vmec}
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83 fi
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84 done
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85 exit ${_ec}
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86 fi
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87
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88 _rundir="%%FBHYVE_RUNDIR%%"
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89 pidfile="${_rundir}/${_vm}.pid"
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90 procname="bhyve:" # something like bhyve: <vmname> (bhyve)
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91
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92 required_dirs="${_rundir}"
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93 required_files="${fbhyve_config}"
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94
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95 command="%%LOCALBASE%%/bin/tmux"
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96
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97 command_args="new-session -ds ${_session} -n ${_window} \"sh -c 'echo \\\$\\\$ >\\\"${pidfile}\\\"; /usr/sbin/bhyve -k \\\"${fbhyve_config}\\\" \\\"${_vm}\\\"'\""
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98
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99
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100 fbhyve_status()
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101 {
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102 local _pid _rc
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103
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104 _rc=0
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105 _pid=$(check_pidfile "$pidfile" "$procname")
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106 if [ -n "${_pid}" ]; then
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107 echo "VM ${_vm} is running as pid $_pid."
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108 else
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109 echo "VM ${_vm} is not running."
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110 _rc=1
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111 fi
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112
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113 if ${command} has-session -t ${_session} 2>/dev/null; then
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114 echo "tmux session ${_session} exists."
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115 if [ ${_rc} -gt 0 ]; then
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116 _rc=2
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117 fi
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118 else
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119 echo "tmux session ${_session} does not exist."
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120 if [ ${_rc} -gt 0 ]; then
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121 _rc=2
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122 fi
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123 fi
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124 return ${_rc}
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125 }
464
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126
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127
475
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128 fbhyve_pre_start()
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129 {
474
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130 if ! load_kld -m vmm vmm.ko; then
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131 echo "ERROR: Cannot load kernel module \`vmm'" 1>&2
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132 return 1
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133 fi
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134 if [ -e "/dev/vmm/${_vm}" ]; then
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135 echo "ERROR: VM \`${_vm}' already created in the VM monitor" 1>&2
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136 return 1
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137 fi
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138 if ${command} has-session -t "${_session}" 2>/dev/null; then
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139 echo "ERROR: tmux session \`${_session}' already exists" 1>&2
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140 return 1
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141 fi
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142 return 0
464
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143 }
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144
474
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145
475
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146 fbhyve_post_stop()
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147 {
474
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148 if [ -e "/dev/vmm/${_vm}" ]; then
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149 /usr/sbin/bhyvectl --vm="${_vm}" --destroy
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150 fi
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151 if ${command} has-session -t "${_session}" 2>/dev/null; then
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152 ${command} kill-session -t "${_session}"
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153 fi
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154 rm -f "${pidfile}"
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155 return 0
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156 }
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157
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158
476
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159 fbhyve_kill()
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160 {
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161 # Just kill without terminating
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162 if [ -e "/dev/vmm/${_vm}" ]; then
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163 /usr/sbin/bhyvectl --vm="${_vm}" --force-poweroff 2>/dev/null 1>/dev/null
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164 fi
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165 # and do the normal cleanup
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166 fbhyve_post_stop
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167 }
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168
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169
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170 run_rc_command "$1"