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#define DEBUG_SUBSYSTEM S_CLASS
42#include "../include/obd_class.h"
43#include <linux/string.h>
44#include "../include/lustre_log.h"
45#include "../include/lprocfs_status.h"
46#include "../include/lustre_param.h"
47
48#include "llog_internal.h"
49
50static struct cfs_hash_ops uuid_hash_ops;
51
52
53
54
55int class_find_param(char *buf, char *key, char **valp)
56{
57 char *ptr;
58
59 if (!buf)
60 return 1;
61
62 ptr = strstr(buf, key);
63 if (!ptr)
64 return 1;
65
66 if (valp)
67 *valp = ptr + strlen(key);
68
69 return 0;
70}
71EXPORT_SYMBOL(class_find_param);
72
73
74
75
76static int class_match_param(char *buf, const char *key, char **valp)
77{
78 if (!buf)
79 return 1;
80
81 if (memcmp(buf, key, strlen(key)) != 0)
82 return 1;
83
84 if (valp)
85 *valp = buf + strlen(key);
86
87 return 0;
88}
89
90static int parse_nid(char *buf, void *value, int quiet)
91{
92 lnet_nid_t *nid = value;
93
94 *nid = libcfs_str2nid(buf);
95 if (*nid != LNET_NID_ANY)
96 return 0;
97
98 if (!quiet)
99 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
100 return -EINVAL;
101}
102
103static int parse_net(char *buf, void *value)
104{
105 __u32 *net = value;
106
107 *net = libcfs_str2net(buf);
108 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
109 return 0;
110}
111
112enum {
113 CLASS_PARSE_NID = 1,
114 CLASS_PARSE_NET,
115};
116
117
118
119
120
121
122static int class_parse_value(char *buf, int opc, void *value, char **endh,
123 int quiet)
124{
125 char *endp;
126 char tmp;
127 int rc = 0;
128
129 if (!buf)
130 return 1;
131 while (*buf == ',' || *buf == ':')
132 buf++;
133 if (*buf == ' ' || *buf == '/' || *buf == '\0')
134 return 1;
135
136
137 endp = strpbrk(buf, ",: /");
138 if (!endp)
139 endp = buf + strlen(buf);
140
141 tmp = *endp;
142 *endp = '\0';
143 switch (opc) {
144 default:
145 LBUG();
146 case CLASS_PARSE_NID:
147 rc = parse_nid(buf, value, quiet);
148 break;
149 case CLASS_PARSE_NET:
150 rc = parse_net(buf, value);
151 break;
152 }
153 *endp = tmp;
154 if (rc != 0)
155 return rc;
156 if (endh)
157 *endh = endp;
158 return 0;
159}
160
161int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
162{
163 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
164}
165EXPORT_SYMBOL(class_parse_nid);
166
167int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
168{
169 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
170}
171EXPORT_SYMBOL(class_parse_nid_quiet);
172
173
174
175
176
177
178
179static int class_attach(struct lustre_cfg *lcfg)
180{
181 struct obd_device *obd = NULL;
182 char *typename, *name, *uuid;
183 int rc, len;
184
185 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
186 CERROR("No type passed!\n");
187 return -EINVAL;
188 }
189 typename = lustre_cfg_string(lcfg, 1);
190
191 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
192 CERROR("No name passed!\n");
193 return -EINVAL;
194 }
195 name = lustre_cfg_string(lcfg, 0);
196
197 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
198 CERROR("No UUID passed!\n");
199 return -EINVAL;
200 }
201 uuid = lustre_cfg_string(lcfg, 2);
202
203 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
204 MKSTR(typename), MKSTR(name), MKSTR(uuid));
205
206 obd = class_newdev(typename, name);
207 if (IS_ERR(obd)) {
208
209 rc = PTR_ERR(obd);
210 obd = NULL;
211 CERROR("Cannot create device %s of type %s : %d\n",
212 name, typename, rc);
213 goto out;
214 }
215 LASSERTF(obd, "Cannot get obd device %s of type %s\n",
216 name, typename);
217 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
218 "obd %p obd_magic %08X != %08X\n",
219 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
220 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
221 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
222
223 rwlock_init(&obd->obd_pool_lock);
224 obd->obd_pool_limit = 0;
225 obd->obd_pool_slv = 0;
226
227 INIT_LIST_HEAD(&obd->obd_exports);
228 INIT_LIST_HEAD(&obd->obd_unlinked_exports);
229 INIT_LIST_HEAD(&obd->obd_delayed_exports);
230 spin_lock_init(&obd->obd_nid_lock);
231 spin_lock_init(&obd->obd_dev_lock);
232 mutex_init(&obd->obd_dev_mutex);
233 spin_lock_init(&obd->obd_osfs_lock);
234
235
236
237 obd->obd_osfs_age = cfs_time_shift_64(-1000);
238
239
240 init_rwsem(&obd->obd_observer_link_sem);
241
242 init_waitqueue_head(&obd->obd_evict_inprogress_waitq);
243
244 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
245
246 obd->obd_conn_inprogress = 0;
247
248 len = strlen(uuid);
249 if (len >= sizeof(obd->obd_uuid)) {
250 CERROR("uuid must be < %d bytes long\n",
251 (int)sizeof(obd->obd_uuid));
252 rc = -EINVAL;
253 goto out;
254 }
255 memcpy(obd->obd_uuid.uuid, uuid, len);
256
257
258 if (OBP(obd, attach)) {
259 rc = OBP(obd, attach)(obd, sizeof(*lcfg), lcfg);
260 if (rc) {
261 rc = -EINVAL;
262 goto out;
263 }
264 }
265
266
267 spin_lock(&obd->obd_dev_lock);
268 atomic_set(&obd->obd_refcount, 1);
269 spin_unlock(&obd->obd_dev_lock);
270 lu_ref_init(&obd->obd_reference);
271 lu_ref_add(&obd->obd_reference, "attach", obd);
272
273 obd->obd_attached = 1;
274 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
275 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
276 return 0;
277 out:
278 if (obd)
279 class_release_dev(obd);
280
281 return rc;
282}
283
284
285
286
287static int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
288{
289 int err = 0;
290 struct obd_export *exp;
291
292 LASSERT(obd);
293 LASSERTF(obd == class_num2obd(obd->obd_minor),
294 "obd %p != obd_devs[%d] %p\n",
295 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
296 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
297 "obd %p obd_magic %08x != %08x\n",
298 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
299
300
301 if (!obd->obd_attached) {
302 CERROR("Device %d not attached\n", obd->obd_minor);
303 return -ENODEV;
304 }
305
306 if (obd->obd_set_up) {
307 CERROR("Device %d already setup (type %s)\n",
308 obd->obd_minor, obd->obd_type->typ_name);
309 return -EEXIST;
310 }
311
312
313 spin_lock(&obd->obd_dev_lock);
314 if (obd->obd_starting) {
315 spin_unlock(&obd->obd_dev_lock);
316 CERROR("Device %d setup in progress (type %s)\n",
317 obd->obd_minor, obd->obd_type->typ_name);
318 return -EEXIST;
319 }
320
321
322
323 obd->obd_starting = 1;
324 obd->obd_uuid_hash = NULL;
325 spin_unlock(&obd->obd_dev_lock);
326
327
328 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
329 HASH_UUID_CUR_BITS,
330 HASH_UUID_MAX_BITS,
331 HASH_UUID_BKT_BITS, 0,
332 CFS_HASH_MIN_THETA,
333 CFS_HASH_MAX_THETA,
334 &uuid_hash_ops, CFS_HASH_DEFAULT);
335 if (!obd->obd_uuid_hash) {
336 err = -ENOMEM;
337 goto err_hash;
338 }
339
340 exp = class_new_export(obd, &obd->obd_uuid);
341 if (IS_ERR(exp)) {
342 err = PTR_ERR(exp);
343 goto err_hash;
344 }
345
346 obd->obd_self_export = exp;
347 class_export_put(exp);
348
349 err = obd_setup(obd, lcfg);
350 if (err)
351 goto err_exp;
352
353 obd->obd_set_up = 1;
354
355 spin_lock(&obd->obd_dev_lock);
356
357 class_incref(obd, "setup", obd);
358 spin_unlock(&obd->obd_dev_lock);
359
360 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
361 obd->obd_name, obd->obd_uuid.uuid);
362
363 return 0;
364err_exp:
365 if (obd->obd_self_export) {
366 class_unlink_export(obd->obd_self_export);
367 obd->obd_self_export = NULL;
368 }
369err_hash:
370 if (obd->obd_uuid_hash) {
371 cfs_hash_putref(obd->obd_uuid_hash);
372 obd->obd_uuid_hash = NULL;
373 }
374 obd->obd_starting = 0;
375 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
376 return err;
377}
378
379
380
381
382static int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
383{
384 if (obd->obd_set_up) {
385 CERROR("OBD device %d still set up\n", obd->obd_minor);
386 return -EBUSY;
387 }
388
389 spin_lock(&obd->obd_dev_lock);
390 if (!obd->obd_attached) {
391 spin_unlock(&obd->obd_dev_lock);
392 CERROR("OBD device %d not attached\n", obd->obd_minor);
393 return -ENODEV;
394 }
395 obd->obd_attached = 0;
396 spin_unlock(&obd->obd_dev_lock);
397
398 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
399 obd->obd_name, obd->obd_uuid.uuid);
400
401 class_decref(obd, "attach", obd);
402 return 0;
403}
404
405
406
407
408
409static int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
410{
411 int err = 0;
412 char *flag;
413
414 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
415
416 if (!obd->obd_set_up) {
417 CERROR("Device %d not setup\n", obd->obd_minor);
418 return -ENODEV;
419 }
420
421 spin_lock(&obd->obd_dev_lock);
422 if (obd->obd_stopping) {
423 spin_unlock(&obd->obd_dev_lock);
424 CERROR("OBD %d already stopping\n", obd->obd_minor);
425 return -ENODEV;
426 }
427
428 obd->obd_stopping = 1;
429
430
431 while (obd->obd_conn_inprogress > 0) {
432 spin_unlock(&obd->obd_dev_lock);
433
434 cond_resched();
435
436 spin_lock(&obd->obd_dev_lock);
437 }
438 spin_unlock(&obd->obd_dev_lock);
439
440 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
441 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
442 switch (*flag) {
443 case 'F':
444 obd->obd_force = 1;
445 break;
446 case 'A':
447 LCONSOLE_WARN("Failing over %s\n",
448 obd->obd_name);
449 obd->obd_fail = 1;
450 obd->obd_no_transno = 1;
451 obd->obd_no_recov = 1;
452 if (OBP(obd, iocontrol)) {
453 obd_iocontrol(OBD_IOC_SYNC,
454 obd->obd_self_export,
455 0, NULL, NULL);
456 }
457 break;
458 default:
459 CERROR("Unrecognised flag '%c'\n", *flag);
460 }
461 }
462
463 LASSERT(obd->obd_self_export);
464
465
466 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
467 if (err)
468 CERROR("Precleanup %s returned %d\n",
469 obd->obd_name, err);
470
471
472 if (obd->obd_uuid_hash) {
473 cfs_hash_putref(obd->obd_uuid_hash);
474 obd->obd_uuid_hash = NULL;
475 }
476
477 class_decref(obd, "setup", obd);
478 obd->obd_set_up = 0;
479
480 return 0;
481}
482
483struct obd_device *class_incref(struct obd_device *obd,
484 const char *scope, const void *source)
485{
486 lu_ref_add_atomic(&obd->obd_reference, scope, source);
487 atomic_inc(&obd->obd_refcount);
488 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
489 atomic_read(&obd->obd_refcount));
490
491 return obd;
492}
493EXPORT_SYMBOL(class_incref);
494
495void class_decref(struct obd_device *obd, const char *scope, const void *source)
496{
497 int err;
498 int refs;
499
500 spin_lock(&obd->obd_dev_lock);
501 atomic_dec(&obd->obd_refcount);
502 refs = atomic_read(&obd->obd_refcount);
503 spin_unlock(&obd->obd_dev_lock);
504 lu_ref_del(&obd->obd_reference, scope, source);
505
506 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
507
508 if ((refs == 1) && obd->obd_stopping) {
509
510
511
512
513 spin_lock(&obd->obd_self_export->exp_lock);
514 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
515 spin_unlock(&obd->obd_self_export->exp_lock);
516
517
518 class_unlink_export(obd->obd_self_export);
519 return;
520 }
521
522 if (refs == 0) {
523 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
524 obd->obd_name, obd->obd_uuid.uuid);
525 LASSERT(!obd->obd_attached);
526 if (obd->obd_stopping) {
527
528 err = obd_cleanup(obd);
529 if (err)
530 CERROR("Cleanup %s returned %d\n",
531 obd->obd_name, err);
532 }
533 if (OBP(obd, detach)) {
534 err = OBP(obd, detach)(obd);
535 if (err)
536 CERROR("Detach returned %d\n", err);
537 }
538 class_release_dev(obd);
539 }
540}
541EXPORT_SYMBOL(class_decref);
542
543
544
545
546static int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
547{
548 struct obd_import *imp;
549 struct obd_uuid uuid;
550 int rc;
551
552 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
553 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
554 CERROR("invalid conn_uuid\n");
555 return -EINVAL;
556 }
557 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
558 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
559 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
560 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
561 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
562 CERROR("can't add connection on non-client dev\n");
563 return -EINVAL;
564 }
565
566 imp = obd->u.cli.cl_import;
567 if (!imp) {
568 CERROR("try to add conn on immature client dev\n");
569 return -EINVAL;
570 }
571
572 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
573 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
574
575 return rc;
576}
577
578
579
580static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
581{
582 struct obd_import *imp;
583 struct obd_uuid uuid;
584 int rc;
585
586 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
587 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
588 CERROR("invalid conn_uuid\n");
589 return -EINVAL;
590 }
591 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
592 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
593 CERROR("can't del connection on non-client dev\n");
594 return -EINVAL;
595 }
596
597 imp = obd->u.cli.cl_import;
598 if (!imp) {
599 CERROR("try to del conn on immature client dev\n");
600 return -EINVAL;
601 }
602
603 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
604 rc = obd_del_conn(imp, &uuid);
605
606 return rc;
607}
608
609LIST_HEAD(lustre_profile_list);
610
611struct lustre_profile *class_get_profile(const char *prof)
612{
613 struct lustre_profile *lprof;
614
615 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
616 if (!strcmp(lprof->lp_profile, prof)) {
617 return lprof;
618 }
619 }
620 return NULL;
621}
622EXPORT_SYMBOL(class_get_profile);
623
624
625
626
627
628static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
629 int mdclen, char *mdc)
630{
631 struct lustre_profile *lprof;
632 int err = 0;
633
634 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
635
636 lprof = kzalloc(sizeof(*lprof), GFP_NOFS);
637 if (!lprof)
638 return -ENOMEM;
639 INIT_LIST_HEAD(&lprof->lp_list);
640
641 LASSERT(proflen == (strlen(prof) + 1));
642 lprof->lp_profile = kmemdup(prof, proflen, GFP_NOFS);
643 if (!lprof->lp_profile) {
644 err = -ENOMEM;
645 goto free_lprof;
646 }
647
648 LASSERT(osclen == (strlen(osc) + 1));
649 lprof->lp_dt = kmemdup(osc, osclen, GFP_NOFS);
650 if (!lprof->lp_dt) {
651 err = -ENOMEM;
652 goto free_lp_profile;
653 }
654
655 if (mdclen > 0) {
656 LASSERT(mdclen == (strlen(mdc) + 1));
657 lprof->lp_md = kmemdup(mdc, mdclen, GFP_NOFS);
658 if (!lprof->lp_md) {
659 err = -ENOMEM;
660 goto free_lp_dt;
661 }
662 }
663
664 list_add(&lprof->lp_list, &lustre_profile_list);
665 return err;
666
667free_lp_dt:
668 kfree(lprof->lp_dt);
669free_lp_profile:
670 kfree(lprof->lp_profile);
671free_lprof:
672 kfree(lprof);
673 return err;
674}
675
676void class_del_profile(const char *prof)
677{
678 struct lustre_profile *lprof;
679
680 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
681
682 lprof = class_get_profile(prof);
683 if (lprof) {
684 list_del(&lprof->lp_list);
685 kfree(lprof->lp_profile);
686 kfree(lprof->lp_dt);
687 kfree(lprof->lp_md);
688 kfree(lprof);
689 }
690}
691EXPORT_SYMBOL(class_del_profile);
692
693
694void class_del_profiles(void)
695{
696 struct lustre_profile *lprof, *n;
697
698 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
699 list_del(&lprof->lp_list);
700 kfree(lprof->lp_profile);
701 kfree(lprof->lp_dt);
702 kfree(lprof->lp_md);
703 kfree(lprof);
704 }
705}
706EXPORT_SYMBOL(class_del_profiles);
707
708static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
709{
710 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
711 at_min = val;
712 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
713 at_max = val;
714 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
715 at_extra = val;
716 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
717 at_early_margin = val;
718 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
719 at_history = val;
720 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
721 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
722 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
723 else
724 return -EINVAL;
725
726 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
727 return 0;
728}
729
730
731
732
733static int (*client_process_config)(struct lustre_cfg *lcfg);
734static int (*quota_process_config)(struct lustre_cfg *lcfg);
735
736void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
737{
738 client_process_config = cpc;
739}
740EXPORT_SYMBOL(lustre_register_client_process_config);
741
742static int process_param2_config(struct lustre_cfg *lcfg)
743{
744 char *param = lustre_cfg_string(lcfg, 1);
745 char *upcall = lustre_cfg_string(lcfg, 2);
746 char *argv[] = {
747 [0] = "/usr/sbin/lctl",
748 [1] = "set_param",
749 [2] = param,
750 [3] = NULL
751 };
752 ktime_t start;
753 ktime_t end;
754 int rc;
755
756
757 if (strcmp(upcall, LCTL_UPCALL) != 0) {
758 CERROR("Unsupported upcall %s\n", upcall);
759 return -EINVAL;
760 }
761
762 start = ktime_get();
763 rc = call_usermodehelper(argv[0], argv, NULL, 1);
764 end = ktime_get();
765
766 if (rc < 0) {
767 CERROR(
768 "lctl: error invoking upcall %s %s %s: rc = %d; time %ldus\n",
769 argv[0], argv[1], argv[2], rc,
770 (long)ktime_us_delta(end, start));
771 } else {
772 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
773 argv[0], argv[1], argv[2],
774 (long)ktime_us_delta(end, start));
775 rc = 0;
776 }
777
778 return rc;
779}
780
781
782
783
784
785int class_process_config(struct lustre_cfg *lcfg)
786{
787 struct obd_device *obd;
788 int err;
789
790 LASSERT(lcfg && !IS_ERR(lcfg));
791 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
792
793
794 switch (lcfg->lcfg_command) {
795 case LCFG_ATTACH: {
796 err = class_attach(lcfg);
797 goto out;
798 }
799 case LCFG_ADD_UUID: {
800 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid %#llx (%s)\n",
801 lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid,
802 libcfs_nid2str(lcfg->lcfg_nid));
803
804 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
805 goto out;
806 }
807 case LCFG_DEL_UUID: {
808 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
809 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
810 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
811
812 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
813 goto out;
814 }
815 case LCFG_MOUNTOPT: {
816 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
817 lustre_cfg_string(lcfg, 1),
818 lustre_cfg_string(lcfg, 2),
819 lustre_cfg_string(lcfg, 3));
820
821
822
823 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
824 lustre_cfg_string(lcfg, 1),
825 LUSTRE_CFG_BUFLEN(lcfg, 2),
826 lustre_cfg_string(lcfg, 2),
827 LUSTRE_CFG_BUFLEN(lcfg, 3),
828 lustre_cfg_string(lcfg, 3));
829 goto out;
830 }
831 case LCFG_DEL_MOUNTOPT: {
832 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
833 lustre_cfg_string(lcfg, 1));
834 class_del_profile(lustre_cfg_string(lcfg, 1));
835 err = 0;
836 goto out;
837 }
838 case LCFG_SET_TIMEOUT: {
839 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
840 obd_timeout, lcfg->lcfg_num);
841 obd_timeout = max(lcfg->lcfg_num, 1U);
842 obd_timeout_set = 1;
843 err = 0;
844 goto out;
845 }
846 case LCFG_SET_LDLM_TIMEOUT: {
847
848 err = 0;
849 goto out;
850 }
851 case LCFG_SET_UPCALL: {
852 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
853
854 err = 0;
855 goto out;
856 }
857 case LCFG_MARKER: {
858 struct cfg_marker *marker;
859
860 marker = lustre_cfg_buf(lcfg, 1);
861 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
862 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
863 err = 0;
864 goto out;
865 }
866 case LCFG_PARAM: {
867 char *tmp;
868
869 if ((class_match_param(lustre_cfg_string(lcfg, 1),
870 PARAM_LLITE, NULL) == 0) &&
871 client_process_config) {
872 err = (*client_process_config)(lcfg);
873 goto out;
874 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
875 PARAM_SYS, &tmp) == 0)) {
876
877 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
878
879
880
881
882 if (err != 0)
883 CWARN("Ignoring unknown param %s\n", tmp);
884
885 err = 0;
886 goto out;
887 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
888 PARAM_QUOTA, &tmp) == 0) &&
889 quota_process_config) {
890 err = (*quota_process_config)(lcfg);
891 goto out;
892 }
893
894 break;
895 }
896 case LCFG_SET_PARAM: {
897 err = process_param2_config(lcfg);
898 goto out;
899 }
900 }
901
902 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
903 if (!obd) {
904 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
905 CERROR("this lcfg command requires a device name\n");
906 else
907 CERROR("no device for: %s\n",
908 lustre_cfg_string(lcfg, 0));
909
910 err = -EINVAL;
911 goto out;
912 }
913
914 switch (lcfg->lcfg_command) {
915 case LCFG_SETUP: {
916 err = class_setup(obd, lcfg);
917 goto out;
918 }
919 case LCFG_DETACH: {
920 err = class_detach(obd, lcfg);
921 err = 0;
922 goto out;
923 }
924 case LCFG_CLEANUP: {
925 err = class_cleanup(obd, lcfg);
926 err = 0;
927 goto out;
928 }
929 case LCFG_ADD_CONN: {
930 err = class_add_conn(obd, lcfg);
931 err = 0;
932 goto out;
933 }
934 case LCFG_DEL_CONN: {
935 err = class_del_conn(obd, lcfg);
936 err = 0;
937 goto out;
938 }
939 case LCFG_POOL_NEW: {
940 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
941 err = 0;
942 goto out;
943 }
944 case LCFG_POOL_ADD: {
945 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
946 lustre_cfg_string(lcfg, 3));
947 err = 0;
948 goto out;
949 }
950 case LCFG_POOL_REM: {
951 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
952 lustre_cfg_string(lcfg, 3));
953 err = 0;
954 goto out;
955 }
956 case LCFG_POOL_DEL: {
957 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
958 err = 0;
959 goto out;
960 }
961 default: {
962 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
963 goto out;
964
965 }
966 }
967out:
968 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
969 CWARN("Ignoring error %d on optional command %#x\n", err,
970 lcfg->lcfg_command);
971 err = 0;
972 }
973 return err;
974}
975EXPORT_SYMBOL(class_process_config);
976
977int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
978 struct lustre_cfg *lcfg, void *data)
979{
980 struct lprocfs_vars *var;
981 struct file fakefile;
982 struct seq_file fake_seqfile;
983 char *key, *sval;
984 int i, keylen, vallen;
985 int matched = 0, j = 0;
986 int rc = 0;
987 int skip = 0;
988
989 if (lcfg->lcfg_command != LCFG_PARAM) {
990 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
991 return -EINVAL;
992 }
993
994
995 fakefile.private_data = &fake_seqfile;
996 fake_seqfile.private = data;
997
998
999
1000
1001 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1002 key = lustre_cfg_buf(lcfg, i);
1003
1004 class_match_param(key, prefix, &key);
1005 sval = strchr(key, '=');
1006 if (!sval || (*(sval + 1) == 0)) {
1007 CERROR("Can't parse param %s (missing '=')\n", key);
1008
1009 continue;
1010 }
1011 keylen = sval - key;
1012 sval++;
1013 vallen = strlen(sval);
1014 matched = 0;
1015 j = 0;
1016
1017 while (lvars[j].name) {
1018 var = &lvars[j];
1019 if (!class_match_param(key, var->name, NULL)
1020 && keylen == strlen(var->name)) {
1021 matched++;
1022 rc = -EROFS;
1023 if (var->fops && var->fops->write) {
1024 mm_segment_t oldfs;
1025
1026 oldfs = get_fs();
1027 set_fs(KERNEL_DS);
1028 rc = (var->fops->write)(&fakefile, sval,
1029 vallen, NULL);
1030 set_fs(oldfs);
1031 }
1032 break;
1033 }
1034 j++;
1035 }
1036 if (!matched) {
1037
1038
1039
1040 if (strnchr(key, keylen, '.'))
1041 return -ENOSYS;
1042 CERROR("%s: unknown param %s\n",
1043 (char *)lustre_cfg_string(lcfg, 0), key);
1044
1045 skip++;
1046 } else if (rc < 0) {
1047 CERROR("writing proc entry %s err %d\n",
1048 var->name, rc);
1049 rc = 0;
1050 } else {
1051 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1052 lustre_cfg_string(lcfg, 0),
1053 (int)strlen(prefix) - 1, prefix,
1054 (int)(sval - key - 1), key, sval);
1055 }
1056 }
1057
1058 if (rc > 0)
1059 rc = 0;
1060 if (!rc && skip)
1061 rc = skip;
1062 return rc;
1063}
1064EXPORT_SYMBOL(class_process_proc_param);
1065
1066extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1067
1068
1069
1070
1071
1072
1073int class_config_llog_handler(const struct lu_env *env,
1074 struct llog_handle *handle,
1075 struct llog_rec_hdr *rec, void *data)
1076{
1077 struct config_llog_instance *clli = data;
1078 int cfg_len = rec->lrh_len;
1079 char *cfg_buf = (char *) (rec + 1);
1080 int rc = 0;
1081
1082 switch (rec->lrh_type) {
1083 case OBD_CFG_REC: {
1084 struct lustre_cfg *lcfg, *lcfg_new;
1085 struct lustre_cfg_bufs bufs;
1086 char *inst_name = NULL;
1087 int inst_len = 0;
1088 int inst = 0, swab = 0;
1089
1090 lcfg = (struct lustre_cfg *)cfg_buf;
1091 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1092 lustre_swab_lustre_cfg(lcfg);
1093 swab = 1;
1094 }
1095
1096 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1097 if (rc)
1098 goto out;
1099
1100
1101 if (lcfg->lcfg_command == LCFG_MARKER) {
1102 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1103
1104 lustre_swab_cfg_marker(marker, swab,
1105 LUSTRE_CFG_BUFLEN(lcfg, 1));
1106 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1107 clli->cfg_flags, marker->cm_flags);
1108 if (marker->cm_flags & CM_START) {
1109
1110 clli->cfg_flags = CFG_F_MARKER;
1111 if (marker->cm_flags & CM_SKIP) {
1112 clli->cfg_flags |= CFG_F_SKIP;
1113 CDEBUG(D_CONFIG, "SKIP #%d\n",
1114 marker->cm_step);
1115 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1116 (clli->cfg_sb &&
1117 lustre_check_exclusion(clli->cfg_sb,
1118 marker->cm_tgtname))) {
1119 clli->cfg_flags |= CFG_F_EXCLUDE;
1120 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1121 marker->cm_step);
1122 }
1123 } else if (marker->cm_flags & CM_END) {
1124 clli->cfg_flags = 0;
1125 }
1126 }
1127
1128
1129
1130 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1131 !(clli->cfg_flags & CFG_F_MARKER) &&
1132 (lcfg->lcfg_command != LCFG_MARKER)) {
1133 CWARN("Config not inside markers, ignoring! (inst: %p, uuid: %s, flags: %#x)\n",
1134 clli->cfg_instance,
1135 clli->cfg_uuid.uuid, clli->cfg_flags);
1136 clli->cfg_flags |= CFG_F_SKIP;
1137 }
1138 if (clli->cfg_flags & CFG_F_SKIP) {
1139 CDEBUG(D_CONFIG, "skipping %#x\n",
1140 clli->cfg_flags);
1141 rc = 0;
1142
1143 break;
1144 }
1145
1146
1147
1148
1149
1150 {
1151 char *typename = lustre_cfg_string(lcfg, 1);
1152 char *index = lustre_cfg_string(lcfg, 2);
1153
1154 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1155 strcmp(typename, "mds") == 0)) {
1156 CWARN("For 1.8 interoperability, rename obd type from mds to mdt\n");
1157 typename[2] = 't';
1158 }
1159 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1160 strcmp(index, "type") == 0)) {
1161 CDEBUG(D_INFO, "For 1.8 interoperability, set this index to '0'\n");
1162 index[0] = '0';
1163 index[1] = 0;
1164 }
1165 }
1166
1167 if (clli->cfg_flags & CFG_F_EXCLUDE) {
1168 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1169 lcfg->lcfg_command);
1170 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1171
1172 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1173 }
1174
1175 lustre_cfg_bufs_init(&bufs, lcfg);
1176
1177 if (clli && clli->cfg_instance &&
1178 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1179 inst = 1;
1180 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1181 sizeof(clli->cfg_instance) * 2 + 4;
1182 inst_name = kasprintf(GFP_NOFS, "%s-%p",
1183 lustre_cfg_string(lcfg, 0),
1184 clli->cfg_instance);
1185 if (!inst_name) {
1186 rc = -ENOMEM;
1187 goto out;
1188 }
1189 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1190 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1191 lcfg->lcfg_command, inst_name);
1192 }
1193
1194
1195
1196
1197 if (clli && clli->cfg_instance &&
1198 lcfg->lcfg_command == LCFG_ATTACH) {
1199 lustre_cfg_bufs_set_string(&bufs, 2,
1200 clli->cfg_uuid.uuid);
1201 }
1202
1203
1204
1205
1206
1207
1208
1209 if (clli && !clli->cfg_instance &&
1210 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1211 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1212 bufs.lcfg_buflen[1]);
1213 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1214 bufs.lcfg_buflen[0]);
1215 lustre_cfg_bufs_set_string(&bufs, 0,
1216 clli->cfg_obdname);
1217 }
1218
1219 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1220
1221 lcfg_new->lcfg_num = lcfg->lcfg_num;
1222 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1223
1224
1225
1226
1227 if (lcfg->lcfg_nal != 0 &&
1228 (lcfg->lcfg_nid >> 32) == 0) {
1229 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1230
1231 lcfg_new->lcfg_nid =
1232 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1233 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1234 lcfg->lcfg_nal, addr,
1235 libcfs_nid2str(lcfg_new->lcfg_nid));
1236 } else {
1237 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1238 }
1239
1240 lcfg_new->lcfg_nal = 0;
1241
1242 rc = class_process_config(lcfg_new);
1243 lustre_cfg_free(lcfg_new);
1244
1245 if (inst)
1246 kfree(inst_name);
1247 break;
1248 }
1249 default:
1250 CERROR("Unknown llog record type %#x encountered\n",
1251 rec->lrh_type);
1252 break;
1253 }
1254out:
1255 if (rc) {
1256 CERROR("%s: cfg command failed: rc = %d\n",
1257 handle->lgh_ctxt->loc_obd->obd_name, rc);
1258 class_config_dump_handler(NULL, handle, rec, data);
1259 }
1260 return rc;
1261}
1262EXPORT_SYMBOL(class_config_llog_handler);
1263
1264int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1265 char *name, struct config_llog_instance *cfg)
1266{
1267 struct llog_process_cat_data cd = {0, 0};
1268 struct llog_handle *llh;
1269 llog_cb_t callback;
1270 int rc;
1271
1272 CDEBUG(D_INFO, "looking up llog %s\n", name);
1273 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1274 if (rc)
1275 return rc;
1276
1277 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1278 if (rc)
1279 goto parse_out;
1280
1281
1282 if (cfg) {
1283 cd.lpcd_first_idx = cfg->cfg_last_idx;
1284 callback = cfg->cfg_callback;
1285 LASSERT(callback);
1286 } else {
1287 callback = class_config_llog_handler;
1288 }
1289
1290 cd.lpcd_last_idx = 0;
1291
1292 rc = llog_process(env, llh, callback, cfg, &cd);
1293
1294 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1295 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1296 if (cfg)
1297 cfg->cfg_last_idx = cd.lpcd_last_idx;
1298
1299parse_out:
1300 llog_close(env, llh);
1301 return rc;
1302}
1303EXPORT_SYMBOL(class_config_parse_llog);
1304
1305
1306
1307
1308
1309
1310static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf,
1311 int size)
1312{
1313 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1314 char *ptr = buf;
1315 char *end = buf + size;
1316 int rc = 0;
1317
1318 LASSERT(rec->lrh_type == OBD_CFG_REC);
1319 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1320 if (rc < 0)
1321 return rc;
1322
1323 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
1324 if (lcfg->lcfg_flags)
1325 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1326 lcfg->lcfg_flags);
1327
1328 if (lcfg->lcfg_num)
1329 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
1330
1331 if (lcfg->lcfg_nid) {
1332 char nidstr[LNET_NIDSTR_SIZE];
1333
1334 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1335 ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx)\n ",
1336 nidstr, lcfg->lcfg_nid);
1337 }
1338
1339 if (lcfg->lcfg_command == LCFG_MARKER) {
1340 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1341
1342 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1343 marker->cm_step, marker->cm_flags,
1344 marker->cm_tgtname, marker->cm_comment);
1345 } else {
1346 int i;
1347
1348 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1349 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1350 lustre_cfg_string(lcfg, i));
1351 }
1352 }
1353
1354 rc = ptr - buf;
1355 return rc;
1356}
1357
1358int class_config_dump_handler(const struct lu_env *env,
1359 struct llog_handle *handle,
1360 struct llog_rec_hdr *rec, void *data)
1361{
1362 char *outstr;
1363 int rc = 0;
1364
1365 outstr = kzalloc(256, GFP_NOFS);
1366 if (!outstr)
1367 return -ENOMEM;
1368
1369 if (rec->lrh_type == OBD_CFG_REC) {
1370 class_config_parse_rec(rec, outstr, 256);
1371 LCONSOLE(D_WARNING, " %s\n", outstr);
1372 } else {
1373 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1374 rc = -EINVAL;
1375 }
1376
1377 kfree(outstr);
1378 return rc;
1379}
1380
1381
1382
1383
1384int class_manual_cleanup(struct obd_device *obd)
1385{
1386 char flags[3] = "";
1387 struct lustre_cfg *lcfg;
1388 struct lustre_cfg_bufs bufs;
1389 int rc;
1390
1391 if (!obd) {
1392 CERROR("empty cleanup\n");
1393 return -EALREADY;
1394 }
1395
1396 if (obd->obd_force)
1397 strcat(flags, "F");
1398 if (obd->obd_fail)
1399 strcat(flags, "A");
1400
1401 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1402 obd->obd_name, flags);
1403
1404 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1405 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1406 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1407 if (!lcfg)
1408 return -ENOMEM;
1409
1410 rc = class_process_config(lcfg);
1411 if (rc) {
1412 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1413 goto out;
1414 }
1415
1416
1417 lcfg->lcfg_command = LCFG_DETACH;
1418 rc = class_process_config(lcfg);
1419 if (rc)
1420 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1421out:
1422 lustre_cfg_free(lcfg);
1423 return rc;
1424}
1425EXPORT_SYMBOL(class_manual_cleanup);
1426
1427
1428
1429
1430
1431static unsigned
1432uuid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
1433{
1434 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1435 sizeof(((struct obd_uuid *)key)->uuid), mask);
1436}
1437
1438static void *
1439uuid_key(struct hlist_node *hnode)
1440{
1441 struct obd_export *exp;
1442
1443 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1444
1445 return &exp->exp_client_uuid;
1446}
1447
1448
1449
1450
1451
1452static int
1453uuid_keycmp(const void *key, struct hlist_node *hnode)
1454{
1455 struct obd_export *exp;
1456
1457 LASSERT(key);
1458 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1459
1460 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1461 !exp->exp_failed;
1462}
1463
1464static void *
1465uuid_export_object(struct hlist_node *hnode)
1466{
1467 return hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1468}
1469
1470static void
1471uuid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
1472{
1473 struct obd_export *exp;
1474
1475 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1476 class_export_get(exp);
1477}
1478
1479static void
1480uuid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
1481{
1482 struct obd_export *exp;
1483
1484 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1485 class_export_put(exp);
1486}
1487
1488static struct cfs_hash_ops uuid_hash_ops = {
1489 .hs_hash = uuid_hash,
1490 .hs_key = uuid_key,
1491 .hs_keycmp = uuid_keycmp,
1492 .hs_object = uuid_export_object,
1493 .hs_get = uuid_export_get,
1494 .hs_put_locked = uuid_export_put_locked,
1495};
1496