1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (c) 2001-2006 Cluster File Systems, Inc.
6 * This file is part of the Lustre file system, http://www.lustre.org
7 * Lustre is a trademark of Cluster File Systems, Inc.
9 * You may have signed or agreed to another license before downloading
10 * this software. If so, you are bound by the terms and conditions
11 * of that agreement, and the following does not apply to you. See the
12 * LICENSE file included with this distribution for more information.
14 * If you did not agree to a different license, then this copy of Lustre
15 * is open source software; you can redistribute it and/or modify it
16 * under the terms of version 2 of the GNU General Public License as
17 * published by the Free Software Foundation.
19 * In either case, Lustre is distributed in the hope that it will be
20 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
21 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * license text for more details.
28 #define DEBUG_SUBSYSTEM S_CLASS
30 #include <obd_class.h>
31 #include <linux/string.h>
33 #include <liblustre.h>
34 #include <obd_class.h>
37 #include <lustre_log.h>
38 #include <lprocfs_status.h>
39 #include <libcfs/list.h>
40 #include <lustre_param.h>
41 #include <class_hash.h>
43 extern struct lustre_hash_operations uuid_hash_operations;
44 extern struct lustre_hash_operations nid_hash_operations;
46 /*********** string parsing utils *********/
48 /* returns 0 if we find this key in the buffer, else 1 */
49 int class_find_param(char *buf, char *key, char **valp)
56 if ((ptr = strstr(buf, key)) == NULL)
60 *valp = ptr + strlen(key);
65 /* returns 0 if this is the first key in the buffer, else 1.
66 valp points to first char after key. */
67 int class_match_param(char *buf, char *key, char **valp)
72 if (memcmp(buf, key, strlen(key)) != 0)
76 *valp = buf + strlen(key);
84 endh is set to next separator */
85 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
91 while (*buf == ',' || *buf == ':')
93 if (*buf == ' ' || *buf == '/' || *buf == '\0')
96 /* nid separators or end of nids */
97 endp = strpbrk(buf, ",: /");
99 endp = buf + strlen(buf);
103 *nid = libcfs_str2nid(buf);
104 if (*nid == LNET_NID_ANY) {
105 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
113 CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
117 EXPORT_SYMBOL(class_find_param);
118 EXPORT_SYMBOL(class_match_param);
119 EXPORT_SYMBOL(class_parse_nid);
121 /********************** class fns **********************/
123 /* Create a new device and set the type, name and uuid. If
124 * successful, the new device can be accessed by either name or uuid.
126 int class_attach(struct lustre_cfg *lcfg)
128 struct obd_device *obd = NULL;
129 char *typename, *name, *uuid;
133 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
134 CERROR("No type passed!\n");
137 typename = lustre_cfg_string(lcfg, 1);
139 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
140 CERROR("No name passed!\n");
143 name = lustre_cfg_string(lcfg, 0);
145 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
146 CERROR("No UUID passed!\n");
149 uuid = lustre_cfg_string(lcfg, 2);
151 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
152 MKSTR(typename), MKSTR(name), MKSTR(uuid));
154 obd = class_newdev(typename, name);
156 /* Already exists or out of obds */
159 CERROR("Cannot create device %s of type %s : %d\n",
163 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
165 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
166 "obd %p obd_magic %08X != %08X\n",
167 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
168 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
169 obd, obd->obd_name, name);
171 CFS_INIT_LIST_HEAD(&obd->obd_exports);
172 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
173 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
174 spin_lock_init(&obd->obd_nid_lock);
175 spin_lock_init(&obd->obd_dev_lock);
176 sema_init(&obd->obd_dev_sem, 1);
177 spin_lock_init(&obd->obd_osfs_lock);
178 /* obd->obd_osfs_age must be set to a value in the distant
179 * past to guarantee a fresh statfs is fetched on mount. */
180 obd->obd_osfs_age = cfs_time_shift_64(-1000);
182 /* XXX belongs in setup not attach */
184 cfs_init_timer(&obd->obd_recovery_timer);
185 spin_lock_init(&obd->obd_processing_task_lock);
186 cfs_waitq_init(&obd->obd_next_transno_waitq);
187 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
188 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
189 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
190 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
192 llog_group_init(&obd->obd_olg, OBD_LLOG_GROUP);
194 spin_lock_init(&obd->obd_uncommitted_replies_lock);
195 CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
198 if (len >= sizeof(obd->obd_uuid)) {
199 CERROR("uuid must be < "LPSZ" bytes long\n",
200 sizeof(obd->obd_uuid));
201 GOTO(out, rc = -EINVAL);
203 memcpy(obd->obd_uuid.uuid, uuid, len);
206 if (OBP(obd, attach)) {
207 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
209 GOTO(out, rc = -EINVAL);
212 /* Detach drops this */
213 spin_lock(&obd->obd_dev_lock);
214 atomic_set(&obd->obd_refcount, 1);
215 spin_unlock(&obd->obd_dev_lock);
217 obd->obd_attached = 1;
218 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
219 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
223 class_release_dev(obd);
228 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
231 struct obd_export *exp;
234 LASSERT(obd != NULL);
235 LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n",
236 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
237 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n",
238 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
240 /* have we attached a type to this device? */
241 if (!obd->obd_attached) {
242 CERROR("Device %d not attached\n", obd->obd_minor);
246 if (obd->obd_set_up) {
247 CERROR("Device %d already setup (type %s)\n",
248 obd->obd_minor, obd->obd_type->typ_name);
252 /* is someone else setting us up right now? (attach inits spinlock) */
253 spin_lock(&obd->obd_dev_lock);
254 if (obd->obd_starting) {
255 spin_unlock(&obd->obd_dev_lock);
256 CERROR("Device %d setup in progress (type %s)\n",
257 obd->obd_minor, obd->obd_type->typ_name);
260 /* just leave this on forever. I can't use obd_set_up here because
261 other fns check that status, and we're not actually set up yet. */
262 obd->obd_starting = 1;
263 spin_unlock(&obd->obd_dev_lock);
265 /* create an uuid-export hash body */
266 err = lustre_hash_init(&obd->obd_uuid_hash_body, "UUID_HASH",
267 128, &uuid_hash_operations);
271 /* create a nid-export hash body */
272 err = lustre_hash_init(&obd->obd_nid_hash_body, "NID_HASH",
273 128, &nid_hash_operations);
277 /* create a nid-stats hash body */
278 err = lustre_hash_init(&obd->obd_nid_stats_hash_body, "NID_STATS",
279 128, &nid_stat_hash_operations);
283 exp = class_new_export(obd, &obd->obd_uuid);
285 RETURN(PTR_ERR(exp));
287 obd->obd_self_export = exp;
288 list_del_init(&exp->exp_obd_chain_timed);
289 class_export_put(exp);
291 err = obd_setup(obd, lcfg);
297 spin_lock(&obd->obd_dev_lock);
298 /* cleanup drops this */
300 spin_unlock(&obd->obd_dev_lock);
302 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
303 obd->obd_name, obd->obd_uuid.uuid);
308 class_unlink_export(obd->obd_self_export);
309 obd->obd_self_export = NULL;
311 lustre_hash_exit(&obd->obd_uuid_hash_body);
312 lustre_hash_exit(&obd->obd_nid_hash_body);
313 lustre_hash_exit(&obd->obd_nid_stats_hash_body);
314 obd->obd_starting = 0;
315 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
319 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
323 if (obd->obd_set_up) {
324 CERROR("OBD device %d still set up\n", obd->obd_minor);
328 spin_lock(&obd->obd_dev_lock);
329 if (!obd->obd_attached) {
330 spin_unlock(&obd->obd_dev_lock);
331 CERROR("OBD device %d not attached\n", obd->obd_minor);
334 obd->obd_attached = 0;
335 spin_unlock(&obd->obd_dev_lock);
337 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
338 obd->obd_name, obd->obd_uuid.uuid);
342 /* not strictly necessary, but cleans up eagerly */
343 obd_zombie_impexp_cull();
348 static void dump_exports(struct obd_device *obd)
350 struct obd_export *exp, *n;
352 list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
353 struct ptlrpc_reply_state *rs;
354 struct ptlrpc_reply_state *first_reply = NULL;
357 list_for_each_entry (rs, &exp->exp_outstanding_replies,
364 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
365 obd->obd_name, exp, exp->exp_client_uuid.uuid,
366 obd_export_nid2str(exp),
367 atomic_read(&exp->exp_refcount),
368 exp->exp_failed, nreplies, first_reply,
369 nreplies > 3 ? "..." : "");
373 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
379 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
381 if (!obd->obd_set_up) {
382 CERROR("Device %d not setup\n", obd->obd_minor);
386 spin_lock(&obd->obd_dev_lock);
387 if (obd->obd_stopping) {
388 spin_unlock(&obd->obd_dev_lock);
389 CERROR("OBD %d already stopping\n", obd->obd_minor);
392 /* Leave this on forever */
393 obd->obd_stopping = 1;
394 spin_unlock(&obd->obd_dev_lock);
396 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
397 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
403 LCONSOLE_WARN("Failing over %s\n",
406 obd->obd_no_transno = 1;
407 obd->obd_no_recov = 1;
408 /* Set the obd readonly if we can */
409 if (OBP(obd, iocontrol))
410 obd_iocontrol(OBD_IOC_SET_READONLY,
411 obd->obd_self_export,
415 CERROR("unrecognised flag '%c'\n",
420 /* The three references that should be remaining are the
421 * obd_self_export and the attach and setup references. */
422 if (atomic_read(&obd->obd_refcount) > 3) {
423 #if 0 /* We should never fail to cleanup with mountconf */
424 if (!(obd->obd_fail || obd->obd_force)) {
425 CERROR("OBD %s is still busy with %d references\n"
426 "You should stop active file system users,"
427 " or use the --force option to cleanup.\n",
428 obd->obd_name, atomic_read(&obd->obd_refcount));
430 /* Allow a failed cleanup to try again. */
431 obd->obd_stopping = 0;
434 /* refcounf - 3 might be the number of real exports
435 (excluding self export). But class_incref is called
436 by other things as well, so don't count on it. */
437 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
438 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
440 class_disconnect_exports(obd);
442 LASSERT(obd->obd_self_export);
444 /* destroy an uuid-export hash body */
445 lustre_hash_exit(&obd->obd_uuid_hash_body);
447 /* destroy a nid-export hash body */
448 lustre_hash_exit(&obd->obd_nid_hash_body);
450 /* destroy a nid-stats hash body */
451 lustre_hash_exit(&obd->obd_nid_stats_hash_body);
453 /* Precleanup stage 1, we must make sure all exports (other than the
454 self-export) get destroyed. */
455 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
457 CERROR("Precleanup %s returned %d\n",
465 struct obd_device *class_incref(struct obd_device *obd)
467 atomic_inc(&obd->obd_refcount);
468 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
469 atomic_read(&obd->obd_refcount));
474 void class_decref(struct obd_device *obd)
479 spin_lock(&obd->obd_dev_lock);
480 atomic_dec(&obd->obd_refcount);
481 refs = atomic_read(&obd->obd_refcount);
482 spin_unlock(&obd->obd_dev_lock);
484 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
486 if ((refs == 1) && obd->obd_stopping) {
487 /* All exports (other than the self-export) have been
488 destroyed; there should be no more in-progress ops
490 /* if we're not stopping, we didn't finish setup */
491 /* Precleanup stage 2, do other type-specific
492 cleanup requiring the self-export. */
493 err = obd_precleanup(obd, OBD_CLEANUP_SELF_EXP);
495 CERROR("Precleanup %s returned %d\n",
498 spin_lock(&obd->obd_self_export->exp_lock);
499 obd->obd_self_export->exp_flags |=
500 (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
501 (obd->obd_force ? OBD_OPT_FORCE : 0);
502 spin_unlock(&obd->obd_self_export->exp_lock);
504 /* note that we'll recurse into class_decref again */
505 class_unlink_export(obd->obd_self_export);
510 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
511 obd->obd_name, obd->obd_uuid.uuid);
512 LASSERT(!obd->obd_attached);
513 if (obd->obd_stopping) {
514 /* If we're not stopping, we were never set up */
515 err = obd_cleanup(obd);
517 CERROR("Cleanup %s returned %d\n",
520 if (OBP(obd, detach)) {
521 err = OBP(obd,detach)(obd);
523 CERROR("Detach returned %d\n", err);
525 class_release_dev(obd);
529 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
531 struct obd_import *imp;
532 struct obd_uuid uuid;
536 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
537 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
538 CERROR("invalid conn_uuid\n");
541 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
542 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
543 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
544 CERROR("can't add connection on non-client dev\n");
548 imp = obd->u.cli.cl_import;
550 CERROR("try to add conn on immature client dev\n");
554 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
555 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
560 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
562 struct obd_import *imp;
563 struct obd_uuid uuid;
567 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
568 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
569 CERROR("invalid conn_uuid\n");
572 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
573 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
574 CERROR("can't del connection on non-client dev\n");
578 imp = obd->u.cli.cl_import;
580 CERROR("try to del conn on immature client dev\n");
584 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
585 rc = obd_del_conn(imp, &uuid);
590 CFS_LIST_HEAD(lustre_profile_list);
592 struct lustre_profile *class_get_profile(const char * prof)
594 struct lustre_profile *lprof;
597 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
598 if (!strcmp(lprof->lp_profile, prof)) {
605 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
606 int mdclen, char *mdc)
608 struct lustre_profile *lprof;
612 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
614 OBD_ALLOC(lprof, sizeof(*lprof));
617 CFS_INIT_LIST_HEAD(&lprof->lp_list);
619 LASSERT(proflen == (strlen(prof) + 1));
620 OBD_ALLOC(lprof->lp_profile, proflen);
621 if (lprof->lp_profile == NULL)
622 GOTO(out, err = -ENOMEM);
623 memcpy(lprof->lp_profile, prof, proflen);
625 LASSERT(osclen == (strlen(osc) + 1));
626 OBD_ALLOC(lprof->lp_dt, osclen);
627 if (lprof->lp_dt == NULL)
628 GOTO(out, err = -ENOMEM);
629 memcpy(lprof->lp_dt, osc, osclen);
632 LASSERT(mdclen == (strlen(mdc) + 1));
633 OBD_ALLOC(lprof->lp_md, mdclen);
634 if (lprof->lp_md == NULL)
635 GOTO(out, err = -ENOMEM);
636 memcpy(lprof->lp_md, mdc, mdclen);
639 list_add(&lprof->lp_list, &lustre_profile_list);
644 OBD_FREE(lprof->lp_md, mdclen);
646 OBD_FREE(lprof->lp_dt, osclen);
647 if (lprof->lp_profile)
648 OBD_FREE(lprof->lp_profile, proflen);
649 OBD_FREE(lprof, sizeof(*lprof));
653 void class_del_profile(const char *prof)
655 struct lustre_profile *lprof;
658 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
660 lprof = class_get_profile(prof);
662 list_del(&lprof->lp_list);
663 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
664 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
666 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
667 OBD_FREE(lprof, sizeof *lprof);
673 void class_del_profiles(void)
675 struct lustre_profile *lprof, *n;
678 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
679 list_del(&lprof->lp_list);
680 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
681 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
683 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
684 OBD_FREE(lprof, sizeof *lprof);
689 /* We can't call ll_process_config directly because it lives in a module that
690 must be loaded after this one. */
691 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
693 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
695 client_process_config = cpc;
697 EXPORT_SYMBOL(lustre_register_client_process_config);
699 int class_process_config(struct lustre_cfg *lcfg)
701 struct obd_device *obd;
704 LASSERT(lcfg && !IS_ERR(lcfg));
705 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
707 /* Commands that don't need a device */
708 switch(lcfg->lcfg_command) {
710 err = class_attach(lcfg);
713 case LCFG_ADD_UUID: {
714 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
715 " (%s)\n", lustre_cfg_string(lcfg, 1),
716 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
718 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
721 case LCFG_DEL_UUID: {
722 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
723 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
724 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
726 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
729 case LCFG_MOUNTOPT: {
730 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
731 lustre_cfg_string(lcfg, 1),
732 lustre_cfg_string(lcfg, 2),
733 lustre_cfg_string(lcfg, 3));
734 /* set these mount options somewhere, so ll_fill_super
736 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
737 lustre_cfg_string(lcfg, 1),
738 LUSTRE_CFG_BUFLEN(lcfg, 2),
739 lustre_cfg_string(lcfg, 2),
740 LUSTRE_CFG_BUFLEN(lcfg, 3),
741 lustre_cfg_string(lcfg, 3));
744 case LCFG_DEL_MOUNTOPT: {
745 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
746 lustre_cfg_string(lcfg, 1));
747 class_del_profile(lustre_cfg_string(lcfg, 1));
750 case LCFG_SET_TIMEOUT: {
751 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
752 obd_timeout, lcfg->lcfg_num);
753 obd_timeout = max(lcfg->lcfg_num, 1U);
754 obd_health_check_timeout = HEALTH_CHECK_TIMEOUT;
757 case LCFG_SET_UPCALL: {
758 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
759 /* COMPAT_146 Don't fail on old configs */
763 struct cfg_marker *marker;
764 marker = lustre_cfg_buf(lcfg, 1);
765 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
766 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
770 /* llite has no obd */
771 if ((class_match_param(lustre_cfg_string(lcfg, 1),
772 PARAM_LLITE, 0) == 0) &&
773 client_process_config) {
774 err = (*client_process_config)(lcfg);
782 /* Commands that require a device */
783 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
785 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
786 CERROR("this lcfg command requires a device name\n");
788 CERROR("no device for: %s\n",
789 lustre_cfg_string(lcfg, 0));
791 GOTO(out, err = -EINVAL);
794 switch(lcfg->lcfg_command) {
796 err = class_setup(obd, lcfg);
800 err = class_detach(obd, lcfg);
804 err = class_cleanup(obd, lcfg);
807 case LCFG_ADD_CONN: {
808 err = class_add_conn(obd, lcfg);
811 case LCFG_DEL_CONN: {
812 err = class_del_conn(obd, lcfg);
816 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
822 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
823 CWARN("Ignoring error %d on optional command %#x\n", err,
830 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
831 struct lustre_cfg *lcfg, void *data)
834 struct lprocfs_vars *var;
836 int i, keylen, vallen;
837 int matched = 0, j = 0;
841 if (lcfg->lcfg_command != LCFG_PARAM) {
842 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
846 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
847 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
848 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
849 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
850 key = lustre_cfg_buf(lcfg, i);
851 /* Strip off prefix */
852 class_match_param(key, prefix, &key);
853 sval = strchr(key, '=');
854 if (!sval || (*(sval + 1) == 0)) {
855 CERROR("Can't parse param %s\n", key);
857 /* continue parsing other params */
862 vallen = strlen(sval);
865 /* Search proc entries */
866 while (lvars[j].name) {
868 if (class_match_param(key, (char *)var->name, 0) == 0 &&
869 keylen == strlen(var->name)) {
872 if (var->write_fptr) {
876 rc = (var->write_fptr)(NULL, sval,
881 CERROR("writing proc entry %s err %d\n",
888 CERROR("%s: unknown param %s\n",
889 (char *)lustre_cfg_string(lcfg, 0), key);
891 /* continue parsing other params */
893 LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
894 (char *)lustre_cfg_string(lcfg, 0),
895 (int)strlen(prefix) - 1, prefix,
896 (int)(sval - key - 1), key, sval);
904 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
905 /* Don't throw config error */
910 int class_config_dump_handler(struct llog_handle * handle,
911 struct llog_rec_hdr *rec, void *data);
914 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
916 #define lustre_check_exclusion(a,b) 0
919 static int class_config_llog_handler(struct llog_handle * handle,
920 struct llog_rec_hdr *rec, void *data)
922 struct config_llog_instance *clli = data;
923 int cfg_len = rec->lrh_len;
924 char *cfg_buf = (char*) (rec + 1);
928 //class_config_dump_handler(handle, rec, data);
930 switch (rec->lrh_type) {
932 struct lustre_cfg *lcfg, *lcfg_new;
933 struct lustre_cfg_bufs bufs;
934 char *inst_name = NULL;
938 lcfg = (struct lustre_cfg *)cfg_buf;
939 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
940 lustre_swab_lustre_cfg(lcfg);
942 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
946 /* Figure out config state info */
947 if (lcfg->lcfg_command == LCFG_MARKER) {
948 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
949 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
950 clli->cfg_flags, marker->cm_flags);
951 if (marker->cm_flags & CM_START) {
952 /* all previous flags off */
953 clli->cfg_flags = CFG_F_MARKER;
954 if (marker->cm_flags & CM_SKIP) {
955 clli->cfg_flags |= CFG_F_SKIP;
956 CDEBUG(D_CONFIG, "SKIP #%d\n",
958 } else if ((marker->cm_flags & CM_EXCLUDE) ||
959 lustre_check_exclusion(clli->cfg_sb,
960 marker->cm_tgtname)) {
961 clli->cfg_flags |= CFG_F_EXCLUDE;
962 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
965 } else if (marker->cm_flags & CM_END) {
969 /* A config command without a start marker before it is
970 illegal (post 146) */
971 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
972 !(clli->cfg_flags & CFG_F_MARKER) &&
973 (lcfg->lcfg_command != LCFG_MARKER)) {
974 CWARN("Config not inside markers, ignoring! "
975 "(inst: %s, uuid: %s, flags: %#x)\n",
976 clli->cfg_instance ? clli->cfg_instance : "<null>",
977 clli->cfg_uuid.uuid, clli->cfg_flags);
978 clli->cfg_flags |= CFG_F_SKIP;
980 if (clli->cfg_flags & CFG_F_SKIP) {
981 CDEBUG(D_CONFIG, "skipping %#x\n",
988 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
989 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
990 /* Add inactive instead */
991 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
993 lustre_cfg_bufs_init(&bufs, lcfg);
995 if (clli && clli->cfg_instance &&
996 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
998 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
999 strlen(clli->cfg_instance) + 1;
1000 OBD_ALLOC(inst_name, inst_len);
1001 if (inst_name == NULL)
1002 GOTO(out, rc = -ENOMEM);
1003 sprintf(inst_name, "%s-%s",
1004 lustre_cfg_string(lcfg, 0),
1005 clli->cfg_instance);
1006 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1007 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1008 lcfg->lcfg_command, inst_name);
1011 /* we override the llog's uuid for clients, to insure they
1013 if (clli && clli->cfg_instance &&
1014 lcfg->lcfg_command == LCFG_ATTACH) {
1015 lustre_cfg_bufs_set_string(&bufs, 2,
1016 clli->cfg_uuid.uuid);
1019 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1021 lcfg_new->lcfg_num = lcfg->lcfg_num;
1022 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1024 /* XXX Hack to try to remain binary compatible with
1025 * pre-newconfig logs */
1026 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1027 (lcfg->lcfg_nid >> 32) == 0) {
1028 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1030 lcfg_new->lcfg_nid =
1031 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1032 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1033 lcfg->lcfg_nal, addr,
1034 libcfs_nid2str(lcfg_new->lcfg_nid));
1036 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1039 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1041 rc = class_process_config(lcfg_new);
1042 lustre_cfg_free(lcfg_new);
1045 OBD_FREE(inst_name, inst_len);
1049 CERROR("Unknown llog record type %#x encountered\n",
1055 CERROR("Err %d on cfg command:\n", rc);
1056 class_config_dump_handler(handle, rec, data);
1061 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1062 struct config_llog_instance *cfg)
1064 struct llog_process_cat_data cd = {0, 0};
1065 struct llog_handle *llh;
1069 CDEBUG(D_INFO, "looking up llog %s\n", name);
1070 rc = llog_create(ctxt, &llh, NULL, name);
1074 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1076 GOTO(parse_out, rc);
1078 /* continue processing from where we last stopped to end-of-log */
1080 cd.first_idx = cfg->cfg_last_idx;
1083 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1085 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1086 cd.first_idx + 1, cd.last_idx, rc);
1089 cfg->cfg_last_idx = cd.last_idx;
1092 rc2 = llog_close(llh);
1099 int class_config_dump_handler(struct llog_handle * handle,
1100 struct llog_rec_hdr *rec, void *data)
1102 int cfg_len = rec->lrh_len;
1103 char *cfg_buf = (char*) (rec + 1);
1104 char *outstr, *ptr, *end;
1108 OBD_ALLOC(outstr, 256);
1114 if (rec->lrh_type == OBD_CFG_REC) {
1115 struct lustre_cfg *lcfg;
1118 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1121 lcfg = (struct lustre_cfg *)cfg_buf;
1123 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1124 lcfg->lcfg_command);
1125 if (lcfg->lcfg_flags) {
1126 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1129 if (lcfg->lcfg_num) {
1130 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1133 if (lcfg->lcfg_nid) {
1134 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1135 libcfs_nid2str(lcfg->lcfg_nid),
1138 if (lcfg->lcfg_command == LCFG_MARKER) {
1139 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1140 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1141 marker->cm_step, marker->cm_flags,
1142 marker->cm_tgtname, marker->cm_comment);
1144 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1145 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1146 lustre_cfg_string(lcfg, i));
1149 LCONSOLE(D_WARNING, " %s\n", outstr);
1151 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1155 OBD_FREE(outstr, 256);
1159 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1160 struct config_llog_instance *cfg)
1162 struct llog_handle *llh;
1166 LCONSOLE_INFO("Dumping config log %s\n", name);
1168 rc = llog_create(ctxt, &llh, NULL, name);
1172 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1174 GOTO(parse_out, rc);
1176 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1178 rc2 = llog_close(llh);
1182 LCONSOLE_INFO("End config log %s\n", name);
1187 /* Cleanup and detach */
1188 int class_manual_cleanup(struct obd_device *obd)
1190 struct lustre_cfg *lcfg;
1191 struct lustre_cfg_bufs bufs;
1197 CERROR("empty cleanup\n");
1206 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1207 obd->obd_name, flags);
1209 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1210 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1211 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1213 rc = class_process_config(lcfg);
1215 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1219 /* the lcfg is almost the same for both ops */
1220 lcfg->lcfg_command = LCFG_DETACH;
1221 rc = class_process_config(lcfg);
1223 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1225 lustre_cfg_free(lcfg);