/usr/sbin/lustre_start is in lustre-utils 1.8.5+dfsg-3ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 | #!/bin/bash
# vim:expandtab:shiftwidth=4:softtabstop=4:tabstop=4:
#
# lustre_start - start or stop multiple Lustre servers from a CSV file
#
# This script is used to parse each line of a CSV (Comma-Separated Value) file
# and execute remote command to start/stop the service on every Lustre server
# target that will be part of the Lustre cluster.
#
################################################################################
# Usage
usage() {
cat <<EOF
Usage: $(basename $0) [options] <-a|-w|-x> <CSV file>
This script is used to start or stop multiple Lustre servers from a
CSV file.
Options:
-a select all the nodes from the CSV file to operate on
-w hostname,hostname,...
select the specified list of nodes (separated by commas) to
operate on rather than all the nodes in the CSV file
-x hostname,hostname,...
exclude the specified list of nodes (separated by commas)
-n no net - don't verify network connectivity and hostnames
in the cluster
-m pass "mount options" item in the CSV file to mount command line
-k stop the services on Lustre server targets
-v verbose mode
-h help
CSV file a comma-separated value file that contains configuration
parameters for each target in a Lustre cluster
Please refer to "lustre_config -h" for the description of CSV file formats.
EOF
}
# Get the library of functions
. /usr/libexec/lustre/lc_common
SPECIFY_MNTOPTS=false
STOP_SERVICE=false
# Get and check the positional parameters
while getopts "aw:x:nmkhv" OPTION; do
case $OPTION in
a)
[ -z "$SPECIFIED_NODELIST" ] && [ -z "$EXCLUDED_NODELIST" ] \
&& USE_ALLNODES=true
NODELIST_OPT="$NODELIST_OPT -a"
;;
w)
USE_ALLNODES=false
SPECIFIED_NODELIST=$OPTARG
NODELIST_OPT="$NODELIST_OPT -w $SPECIFIED_NODELIST"
;;
x)
USE_ALLNODES=false
EXCLUDED_NODELIST=$OPTARG
NODELIST_OPT="$NODELIST_OPT -x $EXCLUDED_NODELIST"
;;
n)
VERIFY_CONNECT=false
;;
m)
SPECIFY_MNTOPTS=true
;;
k)
STOP_SERVICE=true
;;
h)
usage
exit 0
;;
v)
VERBOSE_OPT="-v"
VERBOSE_OUTPUT=true
;;
?)
usage 1>&2
exit 1
;;
esac
done
# Toss out the parameters we've already processed
shift $((OPTIND - 1))
# Here we expect the CSV file
if [ $# -eq 0 ]; then
error_output "Missing CSV file!"
usage 1>&2
exit 1
fi
CSV_FILE=$1
# get_fstab_mntopts host_name device_name mount_point
# Get the mount options from the /etc/fstab file
get_fstab_mntopts() {
local host_name=$1
local dev_name=$2
local mnt_pnt=$3
local mnt_opts=""
if [ -z "$host_name" -o -z "$dev_name" -o -z "$mnt_pnt" ]; then
echo "get_fstab_mntopts(): Missing argument!"
return 1
fi
# Execute remote command to get the mount options from /etc/fstab file
mnt_opts=$($REMOTE $host_name "grep -w ^$dev_name /etc/fstab | \
grep -w $mnt_pnt | awk '{print \$4}'" 2>/dev/null)
mnt_opts=${mnt_opts//$host_name: /}
echo $mnt_opts
return 0
}
# Start the service on one Lustre server target
start_service() {
declare -i i=$1
shift
local extra_mntopts="$*"
local mntopts=""
# Get mount options
if $SPECIFY_MNTOPTS; then
# Use the "mount options" item from the CSV file
[ -n "${MOUNT_OPTIONS[i]}" ] && mntopts=${MOUNT_OPTIONS[i]}
else
# Do not use the "mount options" item from the CSV file
mntopts=$(get_fstab_mntopts ${HOST_NAME[i]} ${DEVICE_NAME[i]} \
${MOUNT_POINT[i]})
[ ${PIPESTATUS[0]} -ne 0 ] && error_output "$mntopts" && return 1
fi
[ -n "$mntopts" ] && mntopts="-o $mntopts"
[ -n "$extra_mntopts" ] && mntopts="$mntopts $extra_mntopts"
# Strip of any leading space
mntopts=${mntopts# }
# Execute remote command to start the service
verbose_output "Mounting Lustre ${DEVICE_TYPE[i]} target"\
"${DEVICE_NAME[i]} (opts: $mntopts) on ${HOST_NAME[i]}:${MOUNT_POINT[i]}..."
$REMOTE ${HOST_NAME[i]} "PATH=\$PATH:/sbin:/usr/sbin
error() { set +x; echo \"ERROR: \$2: \$1\"; echo \"XXRETCODE:\$1\"; exit \$1; }
mkdir -p ${MOUNT_POINT[i]} || \\
error \${PIPESTATUS[0]} \"failed to mkdir ${MOUNT_POINT[i]}\"
mount -t $FS_TYPE $mntopts ${DEVICE_NAME[i]} ${MOUNT_POINT[i]} || \\
error \${PIPESTATUS[0]} \\
\"failed to mount ${DEVICE_NAME[i]} on host ${HOST_NAME[i]}\""
return ${PIPESTATUS[0]}
}
# Stop the service on one Lustre server target
stop_service() {
declare -i i=$1
# Execute remote command to stop the service
verbose_output "Unmounting Lustre ${DEVICE_TYPE[i]} target"\
"${DEVICE_NAME[i]} on ${HOST_NAME[i]}:${MOUNT_POINT[i]}..."
$REMOTE ${HOST_NAME[i]} "PATH=\$PATH:/sbin:/usr/sbin
error() { set +x; echo \"ERROR: \$2: \$1\"; echo \"XXRETCODE:\$1\"; exit \$1; }
if grep -q \" ${MOUNT_POINT[i]} \" /proc/mounts; then
umount -d -f ${MOUNT_POINT[i]} || \\
error \${PIPESTATUS[0]} \\
\"failed to unmount ${DEVICE_NAME[i]} on host ${HOST_NAME[i]}\"
else
echo \"${DEVICE_NAME[i]} was not mounted on\"\\
\"${HOST_NAME[i]}:${MOUNT_POINT[i]}\"
fi"
return ${PIPESTATUS[0]}
}
# mass_op op_type target_type
# Start/stop the services on Lustre server targets in parallel
mass_op() {
local op_type=$1
local target_type=$2
local op_func
declare -i i
declare -i pid_num=0
declare -a REMOTE_PID
local RC=0
if [ -z "$op_type" -o -z "$target_type" ]; then
error_output "mass_op(): Missing argument!"
return 1
fi
case "$op_type" in
"start") op_func=start_service;;
"stop") op_func=stop_service;;
*) error_output "mass_op(): Invalid op type \"$op_type\"!" && return 1;;
esac
for ((i = 0; i < ${#HOST_NAME[@]}; i++)); do
if [ "${DEVICE_TYPE[i]}" = "$target_type" ] \
&& [[ "${FORMAT_OPTIONS[i]}" != *noformat* ]]; then
eval "$op_func $i &"
REMOTE_PID[$pid_num]=$!
let pid_num=$pid_num+1
fi
done
for ((pid_num = 0; pid_num < ${#REMOTE_PID[@]}; pid_num++)); do
wait ${REMOTE_PID[${pid_num}]}
local RC1=${PIPESTATUS[0]}
[ $RC1 -ne 0 ] && RC=$RC1
done
[ $RC -ne 0 ] && return $RC
return 0
}
# Unload the modules to make cleanup
unload_modules() {
local command
local host
local host_list
host_list=$(comma_list "${HOST_NAME[@]}")
[ -z "$host_list" ] && return 0
command="PATH=\$PATH:/sbin:/usr/sbin
if grep -q libcfs /proc/modules; then
lctl net down 1>/dev/null 2>&1
lustre_rmmod
fi"
if is_pdsh; then
$REMOTE $host_list "$command"
else
for host in ${host_list//,/ }; do
$REMOTE $host "$command"
done
fi
}
# Start the services on Lustre server targets
mass_start() {
declare -i i
local combo_mgs_mdt=false
if [ ${#HOST_NAME[@]} -eq 0 ]; then
verbose_output "There are no Lustre targets specified."
return 0
fi
# Start lnet network on the MGS node
start_mgs_lnet || return ${PIPESTATUS[0]}
local checked_hosts=""
for ((i = 0; i < ${#HOST_NAME[@]}; i++)); do
host_in_hostlist ${HOST_NAME[i]} $checked_hosts && continue
if ! is_mgs_node ${HOST_NAME[i]}; then
# Add module options to the module configuration file
add_module_options $i ${HOST_NAME[i]} || return ${PIPESTATUS[0]}
# Check lnet networks
check_lnet $i || return ${PIPESTATUS[0]}
checked_hosts="$checked_hosts,${HOST_NAME[i]}"
fi
done
# Start MGS or the MGS service on combo MGS/MDT (with "-o nosvc -n" options)
if [ -n "${MGS_NODENAME[0]}" ]; then
local idx=${MGS_IDX[0]}
if [ "${DEVICE_TYPE[idx]#*mdt*}" != "${DEVICE_TYPE[idx]}" ]; then
# Combo MGS/MDT
combo_mgs_mdt=true
start_service ${MGS_IDX[0]} "-o nosvc -n" || return ${PIPESTATUS[0]}
else
start_service ${MGS_IDX[0]} || return ${PIPESTATUS[0]}
fi
fi
# Start OST(s)
mass_op "start" "ost" || return ${PIPESTATUS[0]}
# Start the MDT service on combo MGS/MDT (with "-o nomgs" option)
if $combo_mgs_mdt; then
start_service ${MGS_IDX[0]} "-o nomgs" || return ${PIPESTATUS[0]}
fi
# Start MDT(s)
mass_op "start" "mdt" || return ${PIPESTATUS[0]}
verbose_output "Success on all Lustre targets!"
return 0
}
# Stop the services on Lustre server targets
mass_stop() {
declare -i i
if [ ${#HOST_NAME[@]} -eq 0 ]; then
verbose_output "There are no Lustre targets specified."
return 0
fi
# Stop MDT(s)
mass_op "stop" "mdt" || return ${PIPESTATUS[0]}
# Stop the MDT service on combo MGS/MDT
if [ -n "${MGS_NODENAME[0]}" ]; then
local idx=${MGS_IDX[0]}
if [ "${DEVICE_TYPE[idx]#*mdt*}" != "${DEVICE_TYPE[idx]}" ]; then
# Combo MGS/MDT
stop_service ${MGS_IDX[0]} || return ${PIPESTATUS[0]}
fi
fi
# Stop OST(s)
mass_op "stop" "ost" || return ${PIPESTATUS[0]}
# Stop MGS or the MGS service on combo MGS/MDT
if [ -n "${MGS_NODENAME[0]}" ]; then
stop_service ${MGS_IDX[0]} || return ${PIPESTATUS[0]}
fi
unload_modules
return 0
}
#********************************* Main Flow **********************************#
# Check the CSV file
check_file $CSV_FILE || exit ${PIPESTATUS[0]}
# Get the list of nodes to be operated on
NODES_TO_USE=$(get_nodelist) || error_exit ${PIPESTATUS[0]} "$NODES_TO_USE"
# Check the node list
check_nodelist $NODES_TO_USE || exit ${PIPESTATUS[0]}
# Check the network connectivity and hostnames
if $VERIFY_CONNECT; then
verbose_output "Checking the cluster network connectivity and hostnames..."
$VERIFY_CLUSTER_NET $NODELIST_OPT $VERBOSE_OPT $CSV_FILE || \
exit ${PIPESTATUS[0]}
verbose_output "Check the cluster network connectivity and hostnames OK!"
fi
# Configure the Lustre cluster
echo "$(basename $0): ******** Lustre cluster configuration BEGIN ********"
get_lustre_items $CSV_FILE || exit ${PIPESTATUS[0]}
check_mgs || exit ${PIPESTATUS[0]}
if ! $STOP_SERVICE; then
mass_start || exit ${PIPESTATUS[0]}
else
mass_stop || exit ${PIPESTATUS[0]}
fi
echo "$(basename $0): ******** Lustre cluster configuration END **********"
exit 0
|