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1 | # -*- sh -*- | |
2 | # vi:syntax=sh | |
3 | # This is a shell function library sourced by some Open vSwitch scripts. | |
4 | # It is not intended to be invoked on its own. | |
5 | ||
6 | # Copyright (C) 2009, 2010, 2011, 2012 Nicira, Inc. | |
7 | # | |
8 | # Licensed under the Apache License, Version 2.0 (the "License"); | |
9 | # you may not use this file except in compliance with the License. | |
10 | # You may obtain a copy of the License at: | |
11 | # | |
12 | # http://www.apache.org/licenses/LICENSE-2.0 | |
13 | # | |
14 | # Unless required by applicable law or agreed to in writing, software | |
15 | # distributed under the License is distributed on an "AS IS" BASIS, | |
16 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
17 | # See the License for the specific language governing permissions and | |
18 | # limitations under the License. | |
19 | ||
20 | ## ----------------- ## | |
21 | ## configure options ## | |
22 | ## ----------------- ## | |
23 | ||
24 | # All of these should be substituted by the Makefile at build time. | |
25 | logdir=${OVS_LOGDIR-'@LOGDIR@'} # /var/log/openvswitch | |
26 | rundir=${OVS_RUNDIR-'@RUNDIR@'} # /var/run/openvswitch | |
27 | sysconfdir=${OVS_SYSCONFDIR-'@sysconfdir@'} # /etc | |
28 | etcdir=$sysconfdir/openvswitch # /etc/openvswitch | |
29 | datadir=${OVS_PKGDATADIR-'@pkgdatadir@'} # /usr/share/openvswitch | |
30 | bindir=${OVS_BINDIR-'@bindir@'} # /usr/bin | |
31 | sbindir=${OVS_SBINDIR-'@sbindir@'} # /usr/sbin | |
32 | ||
33 | # /etc/openvswitch or /var/lib/openvswitch | |
34 | if test X"$OVS_DBDIR" != X; then | |
35 | dbdir=$OVS_DBDIR | |
36 | elif test X"$OVS_SYSCONFDIR" != X; then | |
37 | dbdir=$OVS_SYSCONFDIR/openvswitch | |
38 | else | |
39 | dbdir='@DBDIR@' | |
40 | fi | |
41 | ||
42 | ovs_ctl_log () { | |
43 | echo "$@" >> "${logdir}/ovs-ctl.log" | |
44 | } | |
45 | ||
46 | ovs_ctl () { | |
47 | case "$@" in | |
48 | *"=strace"*) | |
49 | # In case of running the daemon with strace, piping the o/p causes | |
50 | # the script to block (strace probably does not close the inherited | |
51 | # pipe). So, do not log the o/p to ovs-ctl.log. | |
52 | "${datadir}/scripts/ovs-ctl" "$@" | |
53 | ;; | |
54 | "status") | |
55 | # In case of the command 'status', we should return the exit status | |
56 | # of ovs-ctl. It is also useful to document the o/p in ovs-ctl.log. | |
57 | display=`"${datadir}/scripts/ovs-ctl" "$@" 2>&1` | |
58 | rc=$? | |
59 | if test -w "${logdir}/ovs-ctl.log"; then | |
60 | echo "${display}" | tee -a "${logdir}/ovs-ctl.log" | |
61 | else | |
62 | echo "${display}" | |
63 | fi | |
64 | return ${rc} | |
65 | ;; | |
66 | *) | |
67 | echo "`date -u`:$@" >> "${logdir}/ovs-ctl.log" | |
68 | "${datadir}/scripts/ovs-ctl" "$@" 2>&1 | tee -a "${logdir}/ovs-ctl.log" | |
69 | ;; | |
70 | esac | |
71 | } | |
72 | ||
73 | VERSION='@VERSION@' | |
74 | ||
75 | DAEMON_CWD=/ | |
76 | ||
77 | LC_ALL=C; export LC_ALL | |
78 | ||
79 | ## ------------- ## | |
80 | ## LSB functions ## | |
81 | ## ------------- ## | |
82 | ||
83 | # Use the system's own implementations if it has any. | |
84 | if test -e /etc/init.d/functions; then | |
85 | . /etc/init.d/functions | |
86 | elif test -e /etc/rc.d/init.d/functions; then | |
87 | . /etc/rc.d/init.d/functions | |
88 | elif test -e /lib/lsb/init-functions; then | |
89 | . /lib/lsb/init-functions | |
90 | fi | |
91 | ||
92 | # Implement missing functions (e.g. OpenSUSE lacks 'action'). | |
93 | if type log_success_msg >/dev/null 2>&1; then :; else | |
94 | log_success_msg () { | |
95 | printf '%s.\n' "$*" | |
96 | } | |
97 | fi | |
98 | if type log_failure_msg >/dev/null 2>&1; then :; else | |
99 | log_failure_msg () { | |
100 | printf '%s ... failed!\n' "$*" | |
101 | } | |
102 | fi | |
103 | if type log_warning_msg >/dev/null 2>&1; then :; else | |
104 | log_warning_msg () { | |
105 | printf '%s ... (warning).\n' "$*" | |
106 | } | |
107 | fi | |
108 | if type action >/dev/null 2>&1; then :; else | |
109 | action () { | |
110 | STRING=$1 | |
111 | shift | |
112 | "$@" | |
113 | rc=$? | |
114 | if test $rc = 0; then | |
115 | log_success_msg "$STRING" | |
116 | else | |
117 | log_failure_msg "$STRING" | |
118 | fi | |
119 | return $rc | |
120 | } | |
121 | fi | |
122 | ||
123 | ## ------- ## | |
124 | ## Daemons ## | |
125 | ## ------- ## | |
126 | ||
127 | pid_exists () { | |
128 | # This is better than "kill -0" because it doesn't require permission to | |
129 | # send a signal (so daemon_status in particular works as non-root). | |
130 | test -n "$1" && test -d /proc/"$1" | |
131 | } | |
132 | ||
133 | pid_comm_check () { | |
134 | [ "$1" = "`cat /proc/$2/comm`" ] | |
135 | } | |
136 | ||
137 | # version_geq version_a version_b | |
138 | # | |
139 | # Compare (dot separated) version numbers. Returns true (exit code 0) if | |
140 | # version_a is greater or equal than version_b, otherwise false (exit code 1). | |
141 | version_geq() { | |
142 | echo $1 $2 | awk '{ | |
143 | n1 = split($1, a, "."); | |
144 | n2 = split($2, b, "."); | |
145 | n = (n1 > n2) ? n1 : n2; | |
146 | for (i = 1; i <= n; i++) { | |
147 | if (a[i]+0 < b[i]+0) exit 1 | |
148 | if (a[i]+0 > b[i]+0) exit 0 | |
149 | } | |
150 | }' | |
151 | } | |
152 | ||
153 | install_dir () { | |
154 | DIR="$1" | |
155 | INSTALL_MODE="${2:-755}" | |
156 | INSTALL_USER="root" | |
157 | INSTALL_GROUP="root" | |
158 | [ "$OVS_USER" != "" ] && INSTALL_USER="${OVS_USER%:*}" | |
159 | [ "${OVS_USER##*:}" != "" ] && INSTALL_GROUP="${OVS_USER##*:}" | |
160 | ||
161 | if test ! -d "$DIR"; then | |
162 | install -d -m "$INSTALL_MODE" -o "$INSTALL_USER" -g "$INSTALL_GROUP" "$DIR" | |
163 | restorecon "$DIR" >/dev/null 2>&1 | |
164 | fi | |
165 | } | |
166 | ||
167 | start_daemon () { | |
168 | priority=$1 | |
169 | wrapper=$2 | |
170 | shift; shift | |
171 | daemon=$1 | |
172 | strace="" | |
173 | ||
174 | # drop core files in a sensible place | |
175 | install_dir "$DAEMON_CWD" | |
176 | set "$@" --no-chdir | |
177 | cd "$DAEMON_CWD" | |
178 | ||
179 | # log file | |
180 | install_dir "$logdir" "750" | |
181 | set "$@" --log-file="$logdir/$daemon.log" | |
182 | ||
183 | # pidfile and monitoring | |
184 | install_dir "$rundir" | |
185 | set "$@" --pidfile="$rundir/$daemon.pid" | |
186 | set "$@" --detach | |
187 | test X"$MONITOR" = Xno || set "$@" --monitor | |
188 | ||
189 | # wrapper | |
190 | case $wrapper in | |
191 | valgrind) | |
192 | if (valgrind --version) > /dev/null 2>&1; then | |
193 | set valgrind -q --leak-check=full --time-stamp=yes \ | |
194 | --log-file="$logdir/$daemon.valgrind.log.%p" "$@" | |
195 | else | |
196 | log_failure_msg "valgrind not installed, running $daemon without it" | |
197 | fi | |
198 | ;; | |
199 | strace) | |
200 | if (strace -V) > /dev/null 2>&1; then | |
201 | strace="strace -tt -T -s 256 -ff" | |
202 | if (strace -DV) > /dev/null 2>&1; then | |
203 | # Has the -D option. | |
204 | set $strace -D -o "$logdir/$daemon.strace.log" "$@" | |
205 | strace="" | |
206 | fi | |
207 | else | |
208 | log_failure_msg "strace not installed, running $daemon without it" | |
209 | fi | |
210 | ;; | |
211 | glibc) | |
212 | set env MALLOC_CHECK_=2 MALLOC_PERTURB_=165 "$@" | |
213 | ;; | |
214 | '') | |
215 | ;; | |
216 | *) | |
217 | log_failure_msg "unknown wrapper $wrapper, running $daemon without it" | |
218 | ;; | |
219 | esac | |
220 | ||
221 | # priority | |
222 | if test X"$priority" != X; then | |
223 | set nice -n "$priority" "$@" | |
224 | fi | |
225 | ||
226 | action "Starting $daemon" "$@" || return 1 | |
227 | ||
228 | if test X"$strace" != X; then | |
229 | # Strace doesn't have the -D option so we attach after the fact. | |
230 | setsid $strace -o "$logdir/$daemon.strace.log" \ | |
231 | -p `cat $rundir/$daemon.pid` > /dev/null 2>&1 & | |
232 | fi | |
233 | } | |
234 | ||
235 | stop_daemon () { | |
236 | if test -e "$rundir/$1.pid"; then | |
237 | if pid=`cat "$rundir/$1.pid"`; then | |
238 | if pid_exists "$pid" >/dev/null 2>&1; then :; else | |
239 | rm -f $rundir/$1.$pid.ctl $rundir/$1.$pid | |
240 | return 0 | |
241 | fi | |
242 | ||
243 | graceful="EXIT .1 .25 .65 1" | |
244 | actions="TERM .1 .25 .65 1 1 1 1 \ | |
245 | KILL 1 1 1 2 10 15 30 \ | |
246 | FAIL" | |
247 | version=`ovs-appctl -T 1 -t $rundir/$1.$pid.ctl version \ | |
248 | | awk 'NR==1{print $NF}'` | |
249 | ||
250 | # Use `ovs-appctl exit` only if the running daemon version | |
251 | # is >= 2.5.90. This script might be used during upgrade to | |
252 | # stop older versions of daemons which do not behave correctly | |
253 | # with `ovs-appctl exit` (e.g. ovs-vswitchd <= 2.5.0 deletes | |
254 | # internal ports). | |
255 | if version_geq "$version" "2.5.90"; then | |
256 | actions="$graceful $actions" | |
257 | fi | |
258 | actiontype="" | |
259 | for action in $actions; do | |
260 | if pid_exists "$pid" >/dev/null 2>&1; then :; else | |
261 | # pid does not exist. | |
262 | if [ -n "$actiontype" ]; then | |
263 | return 0 | |
264 | fi | |
265 | # But, does the file exist? We may have had a daemon | |
266 | # segfault with `ovs-appctl exit`. Check one more time | |
267 | # before deciding that the daemon is dead. | |
268 | [ -e "$rundir/$1.pid" ] && sleep 2 && pid=`cat "$rundir/$1.pid"` 2>/dev/null | |
269 | if pid_exists "$pid" >/dev/null 2>&1; then :; else | |
270 | return 0 | |
271 | fi | |
272 | fi | |
273 | case $action in | |
274 | EXIT) | |
275 | action "Exiting $1 ($pid)" \ | |
276 | ${bindir}/ovs-appctl -T 1 -t $rundir/$1.$pid.ctl exit | |
277 | # The above command could have resulted in delayed | |
278 | # daemon segfault. And if a monitor is running, it | |
279 | # would restart the daemon giving it a new pid. | |
280 | ;; | |
281 | TERM) | |
282 | action "Killing $1 ($pid)" kill $pid | |
283 | actiontype="force" | |
284 | ;; | |
285 | KILL) | |
286 | action "Killing $1 ($pid) with SIGKILL" kill -9 $pid | |
287 | actiontype="force" | |
288 | ;; | |
289 | FAIL) | |
290 | log_failure_msg "Killing $1 ($pid) failed" | |
291 | return 1 | |
292 | ;; | |
293 | *) | |
294 | sleep $action | |
295 | ;; | |
296 | esac | |
297 | done | |
298 | fi | |
299 | fi | |
300 | log_success_msg "$1 is not running" | |
301 | } | |
302 | ||
303 | daemon_status () { | |
304 | pidfile=$rundir/$1.pid | |
305 | if test -e "$pidfile"; then | |
306 | if pid=`cat "$pidfile"`; then | |
307 | if pid_exists "$pid"; then | |
308 | echo "$1 is running with pid $pid" | |
309 | return 0 | |
310 | else | |
311 | echo "Pidfile for $1 ($pidfile) is stale" | |
312 | fi | |
313 | else | |
314 | echo "Pidfile for $1 ($pidfile) exists but cannot be read" | |
315 | fi | |
316 | else | |
317 | echo "$1 is not running" | |
318 | fi | |
319 | return 1 | |
320 | } | |
321 | ||
322 | daemon_is_running () { | |
323 | pidfile=$rundir/$1.pid | |
324 | test -e "$pidfile" && pid=`cat "$pidfile"` && pid_exists "$pid" && pid_comm_check $1 $pid | |
325 | } >/dev/null 2>&1 | |
326 | ||
327 | # Prints commands needed to move the ip address from interface $1 to interface | |
328 | # $2 | |
329 | move_ip_address () { | |
330 | if [ -z "$1" ] || [ -z "$2" ]; then | |
331 | return | |
332 | fi | |
333 | dev="$1" | |
334 | dst="$2" | |
335 | ||
336 | # IP addresses (including IPv6). | |
337 | echo "ip addr flush dev $dev 2>/dev/null" # Suppresses "Nothing to flush". | |
338 | ip addr show dev $dev | while read addr; do | |
339 | set -- $addr | |
340 | ||
341 | # Check and trim family. | |
342 | family=$1 | |
343 | shift | |
344 | case $family in | |
345 | inet | inet6) ;; | |
346 | *) continue ;; | |
347 | esac | |
348 | ||
349 | # Trim device off the end--"ip" insists on having "dev" precede it. | |
350 | addrcmd= | |
351 | while test $# != 0; do | |
352 | case $1 in | |
353 | dynamic) | |
354 | # XXX: According to 'man ip-address', "dynamic" is only | |
355 | # used for ipv6 addresses. But, atleast on RHEL 7.4 | |
356 | # (iproute-3.10.0-87), it is being used for ipv4 | |
357 | # addresses assigned with dhcp. | |
358 | if [ "$family" = "inet" ]; then | |
359 | shift | |
360 | continue | |
361 | fi | |
362 | # Omit kernel-maintained route. | |
363 | continue 2 | |
364 | ;; | |
365 | scope) | |
366 | if test "$2" = link -a "$family" != inet6; then | |
367 | # Omit route derived from IP address, e.g. | |
368 | # 172.16.0.0/16 derived from 172.16.12.34, | |
369 | # but preserve IPv6 link-local address. | |
370 | continue 2 | |
371 | fi | |
372 | ;; | |
373 | "$dev"|"$dev:"*) | |
374 | # Address label string | |
375 | label=`echo $1 | sed "s/$dev/$dst/"` | |
376 | addrcmd="$addrcmd label $label" | |
377 | shift | |
378 | continue | |
379 | ;; | |
380 | esac | |
381 | addrcmd="$addrcmd $1" | |
382 | shift | |
383 | done | |
384 | if test "$1" != "$dev"; then | |
385 | addrcmd="$addrcmd $1" | |
386 | fi | |
387 | ||
388 | echo ip -f $family addr add $addrcmd dev $dst | |
389 | done | |
390 | } | |
391 | ||
392 | # Prints commands needed to move the ip route of interface $1 to interface $2 | |
393 | move_ip_routes () { | |
394 | if [ -z "$1" ] || [ -z "$2" ]; then | |
395 | return | |
396 | fi | |
397 | dev="$1" | |
398 | dst="$2" | |
399 | echo "ip route flush dev $dev proto boot 2>/dev/null" # Suppresses "Nothing to flush". | |
400 | ip route show dev $dev | while read route; do | |
401 | # "proto kernel" routes are installed by the kernel automatically. | |
402 | case $route in | |
403 | *" proto kernel "*) continue ;; | |
404 | esac | |
405 | ||
406 | echo "ip route add $route dev $dst" | |
407 | done | |
408 | } | |
409 | ||
410 | run_as_ovsuser() { | |
411 | if [ "$OVS_USER" != "" ]; then | |
412 | local uid=$(id -u "${OVS_USER%:*}") | |
413 | local gid=$(id -g "${OVS_USER%:*}") | |
414 | local groups=$(id -G "${OVS_USER%:*}" | tr ' ' ',') | |
415 | setpriv --reuid "$uid" --regid "$gid" --groups "$groups" "$@" | |
416 | else | |
417 | "$@" | |
418 | fi | |
419 | } | |
420 | ||
421 | ovsdb_tool () { | |
422 | run_as_ovsuser ovsdb-tool -vconsole:off "$@" | |
423 | } | |
424 | ||
425 | create_db () { | |
426 | DB_FILE="$1" | |
427 | DB_SCHEMA="$2" | |
428 | action "Creating empty database $DB_FILE" ovsdb_tool create "$DB_FILE" "$DB_SCHEMA" | |
429 | } | |
430 | ||
431 | backup_db () { | |
432 | # Back up the old version. | |
433 | version=`ovsdb_tool db-version "$DB_FILE"` | |
434 | cksum=`ovsdb_tool db-cksum "$DB_FILE" | awk '{print $1}'` | |
435 | backup=$DB_FILE.backup$version-$cksum | |
436 | action "Backing up database to $backup" cp "$DB_FILE" "$backup" || return 1 | |
437 | } | |
438 | ||
439 | upgrade_db () { | |
440 | DB_FILE="$1" | |
441 | DB_SCHEMA="$2" | |
442 | ||
443 | schemaver=`ovsdb_tool schema-version "$DB_SCHEMA"` | |
444 | if test ! -e "$DB_FILE"; then | |
445 | log_warning_msg "$DB_FILE does not exist" | |
446 | install_dir `dirname $DB_FILE` | |
447 | create_db "$DB_FILE" "$DB_SCHEMA" | |
448 | elif test X"`ovsdb_tool needs-conversion "$DB_FILE" "$DB_SCHEMA"`" = Xyes; then | |
449 | backup_db || return 1 | |
450 | ||
451 | # Compact database. This is important if the old schema did not enable | |
452 | # garbage collection (i.e. if it did not have any tables with "isRoot": | |
453 | # true) but the new schema does. In that situation the old database | |
454 | # may contain a transaction that creates a record followed by a | |
455 | # transaction that creates the first use of the record. Replaying that | |
456 | # series of transactions against the new database schema (as "convert" | |
457 | # does) would cause the record to be dropped by the first transaction, | |
458 | # then the second transaction would cause a referential integrity | |
459 | # failure (for a strong reference). | |
460 | # | |
461 | # Errors might occur on an Open vSwitch downgrade if ovsdb-tool doesn't | |
462 | # understand some feature of the schema used in the OVSDB version that | |
463 | # we're downgrading from, so we don't give up on error. | |
464 | action "Compacting database" ovsdb_tool compact "$DB_FILE" | |
465 | ||
466 | # Upgrade or downgrade schema. | |
467 | if action "Converting database schema" ovsdb_tool convert "$DB_FILE" "$DB_SCHEMA"; then | |
468 | : | |
469 | else | |
470 | log_warning_msg "Schema conversion failed, using empty database instead" | |
471 | rm -f "$DB_FILE" | |
472 | create_db "$DB_FILE" "$DB_SCHEMA" | |
473 | fi | |
474 | fi | |
475 | } | |
476 | ||
477 | upgrade_cluster () { | |
478 | local DB_SCHEMA=$1 DB_SERVER=$2 | |
479 | local schema_name=$(ovsdb-tool schema-name $1) || return 1 | |
480 | ||
481 | action "Waiting for $schema_name to come up" ovsdb-client -t 30 wait "$DB_SERVER" "$schema_name" connected || return $? | |
482 | local db_version=$(ovsdb-client -t 10 get-schema-version "$DB_SERVER" "$schema_name") || return $? | |
483 | local target_version=$(ovsdb-tool schema-version "$DB_SCHEMA") || return $? | |
484 | ||
485 | if ovsdb-tool compare-versions "$db_version" == "$target_version"; then | |
486 | : | |
487 | elif ovsdb-tool compare-versions "$db_version" ">" "$target_version"; then | |
488 | log_warning_msg "Database $schema_name has newer schema version ($db_version) than our local schema ($target_version), possibly an upgrade is partially complete?" | |
489 | else | |
490 | action "Upgrading database $schema_name from schema version $db_version to $target_version" ovsdb-client -t 30 convert "$DB_SERVER" "$DB_SCHEMA" | |
491 | fi | |
492 | } | |
493 | ||
494 | create_cluster () { | |
495 | DB_FILE="$1" | |
496 | DB_SCHEMA="$2" | |
497 | LOCAL_ADDR="$3" | |
498 | ||
499 | if test ! -e "$DB_FILE"; then | |
500 | action "Creating cluster database $DB_FILE" ovsdb_tool create-cluster "$DB_FILE" "$DB_SCHEMA" "$LOCAL_ADDR" | |
501 | elif ovsdb_tool db-is-standalone "$DB_FILE"; then | |
502 | # Convert standalone database to clustered. | |
503 | backup_db || return 1 | |
504 | rm -f "$DB_FILE" | |
505 | action "Creating cluster database $DB_FILE from existing one" \ | |
506 | ovsdb_tool create-cluster "$DB_FILE" "$backup" "$LOCAL_ADDR" | |
507 | fi | |
508 | } | |
509 | ||
510 | join_cluster() { | |
511 | DB_FILE="$1" | |
512 | SCHEMA_NAME="$2" | |
513 | LOCAL_ADDR="$3" | |
514 | REMOTE_ADDR="$4" | |
515 | ||
516 | if test ! -e "$DB_FILE"; then | |
517 | ovsdb_tool join-cluster "$DB_FILE" "$SCHEMA_NAME" "$LOCAL_ADDR" "$REMOTE_ADDR" | |
518 | elif ovsdb_tool db-is-standalone "$DB_FILE"; then | |
519 | # Backup standalone database and join cluster. | |
520 | backup_db || return 1 | |
521 | action "Joining $DB_FILE to cluster" \ | |
522 | ovsdb_tool join-cluster "$DB_FILE" "$SCHEMA_NAME" "$LOCAL_ADDR" | |
523 | fi | |
524 | } | |
525 | ||
526 | ovs_vsctl () { | |
527 | ovs-vsctl --no-wait "$@" | |
528 | } | |
529 | ||
530 | ## ----------------- ## | |
531 | ## force-reload-kmod ## | |
532 | ## ----------------- ## | |
533 | ||
534 | ovs_kmod_ctl () { | |
535 | "$dir0/ovs-kmod-ctl" "$@" | |
536 | } | |
537 | ||
538 | internal_interfaces () { | |
539 | # Outputs a list of internal interfaces: | |
540 | # | |
541 | # - There is an internal interface for every bridge, whether it | |
542 | # has an Interface record or not and whether the Interface | |
543 | # record's 'type' is properly set or not. | |
544 | # | |
545 | # - There is an internal interface for each Interface record whose | |
546 | # 'type' is 'internal'. | |
547 | # | |
548 | # But ignore interfaces that don't really exist. | |
549 | for d in `(ovs_vsctl --bare \ | |
550 | -- --columns=name find Interface type=internal \ | |
551 | -- list-br) | sort -u` | |
552 | do | |
553 | if test -e "/sys/class/net/$d"; then | |
554 | printf "%s " "$d" | |
555 | fi | |
556 | done | |
557 | } | |
558 | ||
559 | ovs_save () { | |
560 | bridges=`ovs_vsctl -- --real list-br` | |
561 | if [ -n "${bridges}" ] && \ | |
562 | "$datadir/scripts/ovs-save" "$1" ${bridges} > "$2"; then | |
563 | chmod +x "$2" | |
564 | return 0 | |
565 | fi | |
566 | [ -z "${bridges}" ] && return 0 | |
567 | } | |
568 | ||
569 | save_flows_if_required () { | |
570 | if test X"$DELETE_BRIDGES" != Xyes; then | |
571 | action "Saving flows" ovs_save save-flows "${script_flows}" | |
572 | fi | |
573 | } | |
574 | ||
575 | save_interfaces () { | |
576 | "$datadir/scripts/ovs-save" save-interfaces ${ifaces} \ | |
577 | > "${script_interfaces}" | |
578 | } | |
579 | ||
580 | flow_restore_wait () { | |
581 | if test X"${OVS_VSWITCHD:-yes}" = Xyes; then | |
582 | ovs_vsctl set open_vswitch . other_config:flow-restore-wait="true" | |
583 | fi | |
584 | } | |
585 | ||
586 | flow_restore_complete () { | |
587 | if test X"${OVS_VSWITCHD:-yes}" = Xyes; then | |
588 | ovs_vsctl --if-exists remove open_vswitch . other_config \ | |
589 | flow-restore-wait="true" | |
590 | fi | |
591 | } | |
592 | ||
593 | restore_flows () { | |
594 | [ -x "${script_flows}" ] && \ | |
595 | action "Restoring saved flows" "${script_flows}" | |
596 | } | |
597 | ||
598 | restore_interfaces () { | |
599 | [ ! -x "${script_interfaces}" ] && return 0 | |
600 | action "Restoring interface configuration" "${script_interfaces}" | |
601 | rc=$? | |
602 | if test $rc = 0; then | |
603 | level=debug | |
604 | else | |
605 | level=err | |
606 | fi | |
607 | log="logger -p daemon.$level -t ovs-save" | |
608 | $log "interface restore script exited with status $rc:" | |
609 | $log -f "$script_interfaces" | |
610 | } | |
611 | ||
612 | init_restore_scripts () { | |
613 | script_interfaces=`mktemp` | |
614 | script_flows=`mktemp` | |
615 | trap 'rm -f "${script_interfaces}" "${script_flows}"' 0 | |
616 | } | |
617 | ||
618 | force_reload_kmod () { | |
619 | ||
620 | if test X"${OVS_VSWITCHD:-yes}" != Xyes; then | |
621 | log_failure_msg "Reloading of kmod without ovs-vswitchd is an error" | |
622 | exit 1 | |
623 | fi | |
624 | ||
625 | ifaces=`internal_interfaces` | |
626 | action "Detected internal interfaces: $ifaces" true | |
627 | ||
628 | init_restore_scripts | |
629 | save_flows_if_required | |
630 | ||
631 | # Restart the database first, since a large database may take a | |
632 | # while to load, and we want to minimize forwarding disruption. | |
633 | stop_ovsdb | |
634 | start_ovsdb || return 1 | |
635 | ||
636 | stop_forwarding | |
637 | ||
638 | if action "Saving interface configuration" save_interfaces; then | |
639 | : | |
640 | else | |
641 | log_warning_msg "Failed to save configuration, not replacing kernel module" | |
642 | start_forwarding | |
643 | add_managers | |
644 | exit 1 | |
645 | fi | |
646 | chmod +x "$script_interfaces" | |
647 | ||
648 | for dp in `ovs-dpctl dump-dps`; do | |
649 | action "Removing datapath: $dp" ovs-dpctl del-dp "$dp" | |
650 | done | |
651 | ||
652 | if test -e /sys/module/ip_gre; then | |
653 | action "Forcing removal of ip_gre module" rmmod ip_gre | |
654 | fi | |
655 | ||
656 | if test -e /sys/module/gre; then | |
657 | action "Forcing removal of gre module" rmmod gre | |
658 | fi | |
659 | ||
660 | ovs_kmod_ctl remove | |
661 | ||
662 | # Start vswitchd by asking it to wait till flow restore is finished. | |
663 | flow_restore_wait | |
664 | start_forwarding || return 1 | |
665 | ||
666 | # Restore saved flows and inform vswitchd that we are done. | |
667 | restore_flows | |
668 | flow_restore_complete | |
669 | add_managers | |
670 | ||
671 | restore_interfaces | |
672 | ||
673 | action "Finding processes on dead interfaces" timeout 5 \ | |
674 | "$datadir/scripts/ovs-check-dead-ifs" || true | |
675 | } | |
676 | ||
677 | ## ------- ## | |
678 | ## restart ## | |
679 | ## ------- ## | |
680 | ||
681 | restart () { | |
682 | if daemon_is_running ovsdb-server && daemon_is_running ovs-vswitchd; then | |
683 | init_restore_scripts | |
684 | if test X"${OVS_VSWITCHD:-yes}" = Xyes; then | |
685 | save_flows_if_required | |
686 | fi | |
687 | fi | |
688 | ||
689 | # Restart the database first, since a large database may take a | |
690 | # while to load, and we want to minimize forwarding disruption. | |
691 | stop_ovsdb | |
692 | start_ovsdb || return 1 | |
693 | ||
694 | stop_forwarding | |
695 | ||
696 | # Start vswitchd by asking it to wait till flow restore is finished. | |
697 | flow_restore_wait | |
698 | start_forwarding || return 1 | |
699 | ||
700 | # Restore saved flows and inform vswitchd that we are done. | |
701 | restore_flows | |
702 | flow_restore_complete | |
703 | add_managers | |
704 | } |