1 /*-
2 * Copyright (c) 2004-2009 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/module.h>
34 #include <sys/limits.h>
35 #include <sys/lock.h>
36 #include <sys/mutex.h>
37 #include <sys/bio.h>
38 #include <sys/sysctl.h>
39 #include <sys/malloc.h>
40 #include <sys/bitstring.h>
41 #include <vm/uma.h>
42 #include <machine/atomic.h>
43 #include <geom/geom.h>
44 #include <geom/geom_int.h>
45 #include <sys/proc.h>
46 #include <sys/kthread.h>
47 #include <geom/mirror/g_mirror.h>
48
49
50 static struct g_mirror_softc *
g_mirror_find_device(struct g_class * mp,const char * name)51 g_mirror_find_device(struct g_class *mp, const char *name)
52 {
53 struct g_mirror_softc *sc;
54 struct g_geom *gp;
55
56 g_topology_lock();
57 LIST_FOREACH(gp, &mp->geom, geom) {
58 sc = gp->softc;
59 if (sc == NULL)
60 continue;
61 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_DESTROY) != 0)
62 continue;
63 if (strcmp(gp->name, name) == 0 ||
64 strcmp(sc->sc_name, name) == 0) {
65 g_topology_unlock();
66 sx_xlock(&sc->sc_lock);
67 return (sc);
68 }
69 }
70 g_topology_unlock();
71 return (NULL);
72 }
73
74 static struct g_mirror_disk *
g_mirror_find_disk(struct g_mirror_softc * sc,const char * name)75 g_mirror_find_disk(struct g_mirror_softc *sc, const char *name)
76 {
77 struct g_mirror_disk *disk;
78
79 sx_assert(&sc->sc_lock, SX_XLOCKED);
80 if (strncmp(name, "/dev/", 5) == 0)
81 name += 5;
82 LIST_FOREACH(disk, &sc->sc_disks, d_next) {
83 if (disk->d_consumer == NULL)
84 continue;
85 if (disk->d_consumer->provider == NULL)
86 continue;
87 if (strcmp(disk->d_consumer->provider->name, name) == 0)
88 return (disk);
89 }
90 return (NULL);
91 }
92
93 static void
g_mirror_ctl_configure(struct gctl_req * req,struct g_class * mp)94 g_mirror_ctl_configure(struct gctl_req *req, struct g_class *mp)
95 {
96 struct g_mirror_softc *sc;
97 struct g_mirror_disk *disk;
98 const char *name, *balancep, *prov;
99 intmax_t *slicep, *priority;
100 uint32_t slice;
101 uint8_t balance;
102 int *autosync, *noautosync, *failsync, *nofailsync, *hardcode, *dynamic;
103 int *nargs, do_sync = 0, dirty = 1, do_priority = 0;
104
105 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
106 if (nargs == NULL) {
107 gctl_error(req, "No '%s' argument.", "nargs");
108 return;
109 }
110 if (*nargs != 1 && *nargs != 2) {
111 gctl_error(req, "Invalid number of arguments.");
112 return;
113 }
114 name = gctl_get_asciiparam(req, "arg0");
115 if (name == NULL) {
116 gctl_error(req, "No 'arg%u' argument.", 0);
117 return;
118 }
119 balancep = gctl_get_asciiparam(req, "balance");
120 if (balancep == NULL) {
121 gctl_error(req, "No '%s' argument.", "balance");
122 return;
123 }
124 autosync = gctl_get_paraml(req, "autosync", sizeof(*autosync));
125 if (autosync == NULL) {
126 gctl_error(req, "No '%s' argument.", "autosync");
127 return;
128 }
129 noautosync = gctl_get_paraml(req, "noautosync", sizeof(*noautosync));
130 if (noautosync == NULL) {
131 gctl_error(req, "No '%s' argument.", "noautosync");
132 return;
133 }
134 failsync = gctl_get_paraml(req, "failsync", sizeof(*failsync));
135 if (failsync == NULL) {
136 gctl_error(req, "No '%s' argument.", "failsync");
137 return;
138 }
139 nofailsync = gctl_get_paraml(req, "nofailsync", sizeof(*nofailsync));
140 if (nofailsync == NULL) {
141 gctl_error(req, "No '%s' argument.", "nofailsync");
142 return;
143 }
144 hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode));
145 if (hardcode == NULL) {
146 gctl_error(req, "No '%s' argument.", "hardcode");
147 return;
148 }
149 dynamic = gctl_get_paraml(req, "dynamic", sizeof(*dynamic));
150 if (dynamic == NULL) {
151 gctl_error(req, "No '%s' argument.", "dynamic");
152 return;
153 }
154 priority = gctl_get_paraml(req, "priority", sizeof(*priority));
155 if (priority == NULL) {
156 gctl_error(req, "No '%s' argument.", "priority");
157 return;
158 }
159 if (*priority < -1 || *priority > 255) {
160 gctl_error(req, "Priority range is 0 to 255, %jd given",
161 *priority);
162 return;
163 }
164 /*
165 * Since we have a priority, we also need a provider now.
166 * Note: be WARNS safe, by always assigning prov and only throw an
167 * error if *priority != -1.
168 */
169 prov = gctl_get_asciiparam(req, "arg1");
170 if (*priority > -1) {
171 if (prov == NULL) {
172 gctl_error(req, "Priority needs a disk name");
173 return;
174 }
175 do_priority = 1;
176 }
177 if (*autosync && *noautosync) {
178 gctl_error(req, "'%s' and '%s' specified.", "autosync",
179 "noautosync");
180 return;
181 }
182 if (*failsync && *nofailsync) {
183 gctl_error(req, "'%s' and '%s' specified.", "failsync",
184 "nofailsync");
185 return;
186 }
187 if (*hardcode && *dynamic) {
188 gctl_error(req, "'%s' and '%s' specified.", "hardcode",
189 "dynamic");
190 return;
191 }
192 sc = g_mirror_find_device(mp, name);
193 if (sc == NULL) {
194 gctl_error(req, "No such device: %s.", name);
195 return;
196 }
197 if (*balancep == '\0')
198 balance = sc->sc_balance;
199 else {
200 if (balance_id(balancep) == -1) {
201 gctl_error(req, "Invalid balance algorithm.");
202 sx_xunlock(&sc->sc_lock);
203 return;
204 }
205 balance = balance_id(balancep);
206 }
207 slicep = gctl_get_paraml(req, "slice", sizeof(*slicep));
208 if (slicep == NULL) {
209 gctl_error(req, "No '%s' argument.", "slice");
210 sx_xunlock(&sc->sc_lock);
211 return;
212 }
213 if (*slicep == -1)
214 slice = sc->sc_slice;
215 else
216 slice = *slicep;
217 /* Enforce usage() of -p not allowing any other options. */
218 if (do_priority && (*autosync || *noautosync || *failsync ||
219 *nofailsync || *hardcode || *dynamic || *slicep != -1 ||
220 *balancep != '\0')) {
221 sx_xunlock(&sc->sc_lock);
222 gctl_error(req, "only -p accepted when setting priority");
223 return;
224 }
225 if (sc->sc_balance == balance && sc->sc_slice == slice && !*autosync &&
226 !*noautosync && !*failsync && !*nofailsync && !*hardcode &&
227 !*dynamic && !do_priority) {
228 sx_xunlock(&sc->sc_lock);
229 gctl_error(req, "Nothing has changed.");
230 return;
231 }
232 if ((!do_priority && *nargs != 1) || (do_priority && *nargs != 2)) {
233 sx_xunlock(&sc->sc_lock);
234 gctl_error(req, "Invalid number of arguments.");
235 return;
236 }
237 if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) {
238 sx_xunlock(&sc->sc_lock);
239 gctl_error(req, "Not all disks connected. Try 'forget' command "
240 "first.");
241 return;
242 }
243 sc->sc_balance = balance;
244 sc->sc_slice = slice;
245 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0) {
246 if (*autosync) {
247 sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
248 do_sync = 1;
249 }
250 } else {
251 if (*noautosync)
252 sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOAUTOSYNC;
253 }
254 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOFAILSYNC) != 0) {
255 if (*failsync)
256 sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
257 } else {
258 if (*nofailsync) {
259 sc->sc_flags |= G_MIRROR_DEVICE_FLAG_NOFAILSYNC;
260 dirty = 0;
261 }
262 }
263 LIST_FOREACH(disk, &sc->sc_disks, d_next) {
264 /*
265 * Handle priority first, since we only need one disk, do one
266 * operation on it and then we're done. No need to check other
267 * flags, as usage doesn't allow it.
268 */
269 if (do_priority) {
270 if (strcmp(disk->d_name, prov) == 0) {
271 if (disk->d_priority == *priority)
272 gctl_error(req, "Nothing has changed.");
273 else {
274 disk->d_priority = *priority;
275 g_mirror_update_metadata(disk);
276 }
277 break;
278 }
279 continue;
280 }
281 if (do_sync) {
282 if (disk->d_state == G_MIRROR_DISK_STATE_SYNCHRONIZING)
283 disk->d_flags &= ~G_MIRROR_DISK_FLAG_FORCE_SYNC;
284 }
285 if (*hardcode)
286 disk->d_flags |= G_MIRROR_DISK_FLAG_HARDCODED;
287 else if (*dynamic)
288 disk->d_flags &= ~G_MIRROR_DISK_FLAG_HARDCODED;
289 if (!dirty)
290 disk->d_flags &= ~G_MIRROR_DISK_FLAG_DIRTY;
291 g_mirror_update_metadata(disk);
292 if (do_sync) {
293 if (disk->d_state == G_MIRROR_DISK_STATE_STALE) {
294 g_mirror_event_send(disk,
295 G_MIRROR_DISK_STATE_DISCONNECTED,
296 G_MIRROR_EVENT_DONTWAIT);
297 }
298 }
299 }
300 sx_xunlock(&sc->sc_lock);
301 }
302
303 static void
g_mirror_ctl_rebuild(struct gctl_req * req,struct g_class * mp)304 g_mirror_ctl_rebuild(struct gctl_req *req, struct g_class *mp)
305 {
306 struct g_mirror_metadata md;
307 struct g_mirror_softc *sc;
308 struct g_mirror_disk *disk;
309 struct g_provider *pp;
310 const char *name;
311 char param[16];
312 int error, *nargs;
313 u_int i;
314
315 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
316 if (nargs == NULL) {
317 gctl_error(req, "No '%s' argument.", "nargs");
318 return;
319 }
320 if (*nargs < 2) {
321 gctl_error(req, "Too few arguments.");
322 return;
323 }
324 name = gctl_get_asciiparam(req, "arg0");
325 if (name == NULL) {
326 gctl_error(req, "No 'arg%u' argument.", 0);
327 return;
328 }
329 sc = g_mirror_find_device(mp, name);
330 if (sc == NULL) {
331 gctl_error(req, "No such device: %s.", name);
332 return;
333 }
334 for (i = 1; i < (u_int)*nargs; i++) {
335 snprintf(param, sizeof(param), "arg%u", i);
336 name = gctl_get_asciiparam(req, param);
337 if (name == NULL) {
338 gctl_error(req, "No 'arg%u' argument.", i);
339 continue;
340 }
341 disk = g_mirror_find_disk(sc, name);
342 if (disk == NULL) {
343 gctl_error(req, "No such provider: %s.", name);
344 continue;
345 }
346 if (g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE) == 1 &&
347 disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) {
348 /*
349 * This is the last active disk. There will be nothing
350 * to rebuild it from, so deny this request.
351 */
352 gctl_error(req,
353 "Provider %s is the last active provider in %s.",
354 name, sc->sc_geom->name);
355 break;
356 }
357 /*
358 * Do rebuild by resetting syncid, disconnecting the disk and
359 * connecting it again.
360 */
361 disk->d_sync.ds_syncid = 0;
362 if ((sc->sc_flags & G_MIRROR_DEVICE_FLAG_NOAUTOSYNC) != 0)
363 disk->d_flags |= G_MIRROR_DISK_FLAG_FORCE_SYNC;
364 g_mirror_update_metadata(disk);
365 pp = disk->d_consumer->provider;
366 g_topology_lock();
367 error = g_mirror_read_metadata(disk->d_consumer, &md);
368 g_topology_unlock();
369 g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DISCONNECTED,
370 G_MIRROR_EVENT_WAIT);
371 if (error != 0) {
372 gctl_error(req, "Cannot read metadata from %s.",
373 pp->name);
374 continue;
375 }
376 error = g_mirror_add_disk(sc, pp, &md);
377 if (error != 0) {
378 gctl_error(req, "Cannot reconnect component %s.",
379 pp->name);
380 continue;
381 }
382 }
383 sx_xunlock(&sc->sc_lock);
384 }
385
386 static void
g_mirror_ctl_insert(struct gctl_req * req,struct g_class * mp)387 g_mirror_ctl_insert(struct gctl_req *req, struct g_class *mp)
388 {
389 struct g_mirror_softc *sc;
390 struct g_mirror_disk *disk;
391 struct g_mirror_metadata md;
392 struct g_provider *pp;
393 struct g_consumer *cp;
394 intmax_t *priority;
395 const char *name;
396 char param[16];
397 u_char *sector;
398 u_int i, n;
399 int error, *nargs, *hardcode, *inactive;
400 struct {
401 struct g_provider *provider;
402 struct g_consumer *consumer;
403 } *disks;
404
405 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
406 if (nargs == NULL) {
407 gctl_error(req, "No '%s' argument.", "nargs");
408 return;
409 }
410 if (*nargs < 2) {
411 gctl_error(req, "Too few arguments.");
412 return;
413 }
414 priority = gctl_get_paraml(req, "priority", sizeof(*priority));
415 if (priority == NULL) {
416 gctl_error(req, "No '%s' argument.", "priority");
417 return;
418 }
419 inactive = gctl_get_paraml(req, "inactive", sizeof(*inactive));
420 if (inactive == NULL) {
421 gctl_error(req, "No '%s' argument.", "inactive");
422 return;
423 }
424 hardcode = gctl_get_paraml(req, "hardcode", sizeof(*hardcode));
425 if (hardcode == NULL) {
426 gctl_error(req, "No '%s' argument.", "hardcode");
427 return;
428 }
429 name = gctl_get_asciiparam(req, "arg0");
430 if (name == NULL) {
431 gctl_error(req, "No 'arg%u' argument.", 0);
432 return;
433 }
434 sc = g_mirror_find_device(mp, name);
435 if (sc == NULL) {
436 gctl_error(req, "No such device: %s.", name);
437 return;
438 }
439 if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) {
440 gctl_error(req, "Not all disks connected.");
441 sx_xunlock(&sc->sc_lock);
442 return;
443 }
444
445 disks = g_malloc(sizeof(*disks) * (*nargs), M_WAITOK | M_ZERO);
446 g_topology_lock();
447 for (i = 1, n = 0; i < (u_int)*nargs; i++) {
448 snprintf(param, sizeof(param), "arg%u", i);
449 name = gctl_get_asciiparam(req, param);
450 if (name == NULL) {
451 gctl_error(req, "No 'arg%u' argument.", i);
452 continue;
453 }
454 if (g_mirror_find_disk(sc, name) != NULL) {
455 gctl_error(req, "Provider %s already inserted.", name);
456 continue;
457 }
458 if (strncmp(name, "/dev/", 5) == 0)
459 name += 5;
460 pp = g_provider_by_name(name);
461 if (pp == NULL) {
462 gctl_error(req, "Unknown provider %s.", name);
463 continue;
464 }
465 if (sc->sc_provider->mediasize >
466 pp->mediasize - pp->sectorsize) {
467 gctl_error(req, "Provider %s too small.", name);
468 continue;
469 }
470 if ((sc->sc_provider->sectorsize % pp->sectorsize) != 0) {
471 gctl_error(req, "Invalid sectorsize of provider %s.",
472 name);
473 continue;
474 }
475 cp = g_new_consumer(sc->sc_geom);
476 if (g_attach(cp, pp) != 0) {
477 g_destroy_consumer(cp);
478 gctl_error(req, "Cannot attach to provider %s.", name);
479 continue;
480 }
481 if (g_access(cp, 0, 1, 1) != 0) {
482 g_detach(cp);
483 g_destroy_consumer(cp);
484 gctl_error(req, "Cannot access provider %s.", name);
485 continue;
486 }
487 disks[n].provider = pp;
488 disks[n].consumer = cp;
489 n++;
490 }
491 if (n == 0) {
492 g_topology_unlock();
493 sx_xunlock(&sc->sc_lock);
494 g_free(disks);
495 return;
496 }
497 sc->sc_ndisks += n;
498 again:
499 for (i = 0; i < n; i++) {
500 if (disks[i].consumer == NULL)
501 continue;
502 g_mirror_fill_metadata(sc, NULL, &md);
503 md.md_priority = *priority;
504 if (*inactive)
505 md.md_dflags |= G_MIRROR_DISK_FLAG_INACTIVE;
506 pp = disks[i].provider;
507 if (*hardcode) {
508 strlcpy(md.md_provider, pp->name,
509 sizeof(md.md_provider));
510 } else {
511 bzero(md.md_provider, sizeof(md.md_provider));
512 }
513 md.md_provsize = pp->mediasize;
514 sector = g_malloc(pp->sectorsize, M_WAITOK);
515 mirror_metadata_encode(&md, sector);
516 error = g_write_data(disks[i].consumer,
517 pp->mediasize - pp->sectorsize, sector, pp->sectorsize);
518 g_free(sector);
519 if (error != 0) {
520 gctl_error(req, "Cannot store metadata on %s.",
521 pp->name);
522 g_access(disks[i].consumer, 0, -1, -1);
523 g_detach(disks[i].consumer);
524 g_destroy_consumer(disks[i].consumer);
525 disks[i].consumer = NULL;
526 disks[i].provider = NULL;
527 sc->sc_ndisks--;
528 goto again;
529 }
530 }
531 g_topology_unlock();
532 if (i == 0) {
533 /* All writes failed. */
534 sx_xunlock(&sc->sc_lock);
535 g_free(disks);
536 return;
537 }
538 LIST_FOREACH(disk, &sc->sc_disks, d_next) {
539 g_mirror_update_metadata(disk);
540 }
541 /*
542 * Release provider and wait for retaste.
543 */
544 g_topology_lock();
545 for (i = 0; i < n; i++) {
546 if (disks[i].consumer == NULL)
547 continue;
548 g_access(disks[i].consumer, 0, -1, -1);
549 g_detach(disks[i].consumer);
550 g_destroy_consumer(disks[i].consumer);
551 }
552 g_topology_unlock();
553 sx_xunlock(&sc->sc_lock);
554 g_free(disks);
555 }
556
557 static void
g_mirror_ctl_remove(struct gctl_req * req,struct g_class * mp)558 g_mirror_ctl_remove(struct gctl_req *req, struct g_class *mp)
559 {
560 struct g_mirror_softc *sc;
561 struct g_mirror_disk *disk;
562 const char *name;
563 char param[16];
564 int *nargs;
565 u_int i, active;
566
567 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
568 if (nargs == NULL) {
569 gctl_error(req, "No '%s' argument.", "nargs");
570 return;
571 }
572 if (*nargs < 2) {
573 gctl_error(req, "Too few arguments.");
574 return;
575 }
576 name = gctl_get_asciiparam(req, "arg0");
577 if (name == NULL) {
578 gctl_error(req, "No 'arg%u' argument.", 0);
579 return;
580 }
581 sc = g_mirror_find_device(mp, name);
582 if (sc == NULL) {
583 gctl_error(req, "No such device: %s.", name);
584 return;
585 }
586 if (g_mirror_ndisks(sc, -1) < sc->sc_ndisks) {
587 sx_xunlock(&sc->sc_lock);
588 gctl_error(req, "Not all disks connected. Try 'forget' command "
589 "first.");
590 return;
591 }
592 active = g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE);
593 for (i = 1; i < (u_int)*nargs; i++) {
594 snprintf(param, sizeof(param), "arg%u", i);
595 name = gctl_get_asciiparam(req, param);
596 if (name == NULL) {
597 gctl_error(req, "No 'arg%u' argument.", i);
598 continue;
599 }
600 disk = g_mirror_find_disk(sc, name);
601 if (disk == NULL) {
602 gctl_error(req, "No such provider: %s.", name);
603 continue;
604 }
605 if (disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) {
606 if (active > 1)
607 active--;
608 else {
609 gctl_error(req, "%s: Can't remove the last "
610 "ACTIVE component %s.", sc->sc_geom->name,
611 name);
612 continue;
613 }
614 }
615 g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DESTROY,
616 G_MIRROR_EVENT_DONTWAIT);
617 }
618 sx_xunlock(&sc->sc_lock);
619 }
620
621 static void
g_mirror_ctl_resize(struct gctl_req * req,struct g_class * mp)622 g_mirror_ctl_resize(struct gctl_req *req, struct g_class *mp)
623 {
624 struct g_mirror_softc *sc;
625 struct g_mirror_disk *disk;
626 uint64_t mediasize;
627 const char *name, *s;
628 char *x;
629 int *nargs;
630
631 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
632 if (nargs == NULL) {
633 gctl_error(req, "No '%s' argument.", "nargs");
634 return;
635 }
636 if (*nargs != 1) {
637 gctl_error(req, "Missing device.");
638 return;
639 }
640 name = gctl_get_asciiparam(req, "arg0");
641 if (name == NULL) {
642 gctl_error(req, "No 'arg%u' argument.", 0);
643 return;
644 }
645 s = gctl_get_asciiparam(req, "size");
646 if (s == NULL) {
647 gctl_error(req, "No '%s' argument.", "size");
648 return;
649 }
650 mediasize = strtouq(s, &x, 0);
651 if (*x != '\0' || mediasize == 0) {
652 gctl_error(req, "Invalid '%s' argument.", "size");
653 return;
654 }
655 sc = g_mirror_find_device(mp, name);
656 if (sc == NULL) {
657 gctl_error(req, "No such device: %s.", name);
658 return;
659 }
660 /* Deny shrinking of an opened provider */
661 if ((g_debugflags & 16) == 0 && (sc->sc_provider->acr > 0 ||
662 sc->sc_provider->acw > 0 || sc->sc_provider->ace > 0)) {
663 if (sc->sc_mediasize > mediasize) {
664 gctl_error(req, "Device %s is busy.",
665 sc->sc_provider->name);
666 sx_xunlock(&sc->sc_lock);
667 return;
668 }
669 }
670 LIST_FOREACH(disk, &sc->sc_disks, d_next) {
671 if (mediasize > disk->d_consumer->provider->mediasize -
672 disk->d_consumer->provider->sectorsize) {
673 gctl_error(req, "Provider %s is too small.",
674 disk->d_name);
675 sx_xunlock(&sc->sc_lock);
676 return;
677 }
678 }
679 /* Update the size. */
680 sc->sc_mediasize = mediasize;
681 LIST_FOREACH(disk, &sc->sc_disks, d_next) {
682 g_mirror_update_metadata(disk);
683 }
684 g_topology_lock();
685 g_resize_provider(sc->sc_provider, mediasize);
686 g_topology_unlock();
687 sx_xunlock(&sc->sc_lock);
688 }
689
690 static void
g_mirror_ctl_deactivate(struct gctl_req * req,struct g_class * mp)691 g_mirror_ctl_deactivate(struct gctl_req *req, struct g_class *mp)
692 {
693 struct g_mirror_softc *sc;
694 struct g_mirror_disk *disk;
695 const char *name;
696 char param[16];
697 int *nargs;
698 u_int i, active;
699
700 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
701 if (nargs == NULL) {
702 gctl_error(req, "No '%s' argument.", "nargs");
703 return;
704 }
705 if (*nargs < 2) {
706 gctl_error(req, "Too few arguments.");
707 return;
708 }
709 name = gctl_get_asciiparam(req, "arg0");
710 if (name == NULL) {
711 gctl_error(req, "No 'arg%u' argument.", 0);
712 return;
713 }
714 sc = g_mirror_find_device(mp, name);
715 if (sc == NULL) {
716 gctl_error(req, "No such device: %s.", name);
717 return;
718 }
719 active = g_mirror_ndisks(sc, G_MIRROR_DISK_STATE_ACTIVE);
720 for (i = 1; i < (u_int)*nargs; i++) {
721 snprintf(param, sizeof(param), "arg%u", i);
722 name = gctl_get_asciiparam(req, param);
723 if (name == NULL) {
724 gctl_error(req, "No 'arg%u' argument.", i);
725 continue;
726 }
727 disk = g_mirror_find_disk(sc, name);
728 if (disk == NULL) {
729 gctl_error(req, "No such provider: %s.", name);
730 continue;
731 }
732 if (disk->d_state == G_MIRROR_DISK_STATE_ACTIVE) {
733 if (active > 1)
734 active--;
735 else {
736 gctl_error(req, "%s: Can't deactivate the "
737 "last ACTIVE component %s.",
738 sc->sc_geom->name, name);
739 continue;
740 }
741 }
742 disk->d_flags |= G_MIRROR_DISK_FLAG_INACTIVE;
743 disk->d_flags &= ~G_MIRROR_DISK_FLAG_FORCE_SYNC;
744 g_mirror_update_metadata(disk);
745 sc->sc_bump_id |= G_MIRROR_BUMP_SYNCID;
746 g_mirror_event_send(disk, G_MIRROR_DISK_STATE_DISCONNECTED,
747 G_MIRROR_EVENT_DONTWAIT);
748 }
749 sx_xunlock(&sc->sc_lock);
750 }
751
752 static void
g_mirror_ctl_forget(struct gctl_req * req,struct g_class * mp)753 g_mirror_ctl_forget(struct gctl_req *req, struct g_class *mp)
754 {
755 struct g_mirror_softc *sc;
756 struct g_mirror_disk *disk;
757 const char *name;
758 char param[16];
759 int *nargs;
760 u_int i;
761
762 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
763 if (nargs == NULL) {
764 gctl_error(req, "No '%s' argument.", "nargs");
765 return;
766 }
767 if (*nargs < 1) {
768 gctl_error(req, "Missing device(s).");
769 return;
770 }
771
772 for (i = 0; i < (u_int)*nargs; i++) {
773 snprintf(param, sizeof(param), "arg%u", i);
774 name = gctl_get_asciiparam(req, param);
775 if (name == NULL) {
776 gctl_error(req, "No 'arg%u' argument.", i);
777 return;
778 }
779 sc = g_mirror_find_device(mp, name);
780 if (sc == NULL) {
781 gctl_error(req, "No such device: %s.", name);
782 return;
783 }
784 if (g_mirror_ndisks(sc, -1) == sc->sc_ndisks) {
785 sx_xunlock(&sc->sc_lock);
786 G_MIRROR_DEBUG(1,
787 "All disks connected in %s, skipping.",
788 sc->sc_name);
789 continue;
790 }
791 sc->sc_ndisks = g_mirror_ndisks(sc, -1);
792 LIST_FOREACH(disk, &sc->sc_disks, d_next) {
793 g_mirror_update_metadata(disk);
794 }
795 sx_xunlock(&sc->sc_lock);
796 }
797 }
798
799 static void
g_mirror_ctl_stop(struct gctl_req * req,struct g_class * mp,int wipe)800 g_mirror_ctl_stop(struct gctl_req *req, struct g_class *mp, int wipe)
801 {
802 struct g_mirror_softc *sc;
803 int *force, *nargs, error;
804 const char *name;
805 char param[16];
806 u_int i;
807 int how;
808
809 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
810 if (nargs == NULL) {
811 gctl_error(req, "No '%s' argument.", "nargs");
812 return;
813 }
814 if (*nargs < 1) {
815 gctl_error(req, "Missing device(s).");
816 return;
817 }
818 force = gctl_get_paraml(req, "force", sizeof(*force));
819 if (force == NULL) {
820 gctl_error(req, "No '%s' argument.", "force");
821 return;
822 }
823 if (*force)
824 how = G_MIRROR_DESTROY_HARD;
825 else
826 how = G_MIRROR_DESTROY_SOFT;
827
828 for (i = 0; i < (u_int)*nargs; i++) {
829 snprintf(param, sizeof(param), "arg%u", i);
830 name = gctl_get_asciiparam(req, param);
831 if (name == NULL) {
832 gctl_error(req, "No 'arg%u' argument.", i);
833 return;
834 }
835 sc = g_mirror_find_device(mp, name);
836 if (sc == NULL) {
837 gctl_error(req, "No such device: %s.", name);
838 return;
839 }
840 g_cancel_event(sc);
841 if (wipe)
842 sc->sc_flags |= G_MIRROR_DEVICE_FLAG_WIPE;
843 error = g_mirror_destroy(sc, how);
844 if (error != 0) {
845 gctl_error(req, "Cannot destroy device %s (error=%d).",
846 sc->sc_geom->name, error);
847 if (wipe)
848 sc->sc_flags &= ~G_MIRROR_DEVICE_FLAG_WIPE;
849 sx_xunlock(&sc->sc_lock);
850 return;
851 }
852 /* No need to unlock, because lock is already dead. */
853 }
854 }
855
856 void
g_mirror_config(struct gctl_req * req,struct g_class * mp,const char * verb)857 g_mirror_config(struct gctl_req *req, struct g_class *mp, const char *verb)
858 {
859 uint32_t *version;
860
861 g_topology_assert();
862
863 version = gctl_get_paraml(req, "version", sizeof(*version));
864 if (version == NULL) {
865 gctl_error(req, "No '%s' argument.", "version");
866 return;
867 }
868 if (*version != G_MIRROR_VERSION) {
869 gctl_error(req, "Userland and kernel parts are out of sync.");
870 return;
871 }
872
873 g_topology_unlock();
874 if (strcmp(verb, "configure") == 0)
875 g_mirror_ctl_configure(req, mp);
876 else if (strcmp(verb, "rebuild") == 0)
877 g_mirror_ctl_rebuild(req, mp);
878 else if (strcmp(verb, "insert") == 0)
879 g_mirror_ctl_insert(req, mp);
880 else if (strcmp(verb, "remove") == 0)
881 g_mirror_ctl_remove(req, mp);
882 else if (strcmp(verb, "resize") == 0)
883 g_mirror_ctl_resize(req, mp);
884 else if (strcmp(verb, "deactivate") == 0)
885 g_mirror_ctl_deactivate(req, mp);
886 else if (strcmp(verb, "forget") == 0)
887 g_mirror_ctl_forget(req, mp);
888 else if (strcmp(verb, "stop") == 0)
889 g_mirror_ctl_stop(req, mp, 0);
890 else if (strcmp(verb, "destroy") == 0)
891 g_mirror_ctl_stop(req, mp, 1);
892 else
893 gctl_error(req, "Unknown verb.");
894 g_topology_lock();
895 }
896