1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/obd_config.c
41 #define DEBUG_SUBSYSTEM S_CLASS
43 #include <obd_class.h>
44 #include <linux/string.h>
46 #include <liblustre.h>
47 #include <obd_class.h>
50 #include <lustre_log.h>
51 #include <lprocfs_status.h>
52 #include <libcfs/list.h>
53 #include <lustre_param.h>
55 static cfs_hash_ops_t uuid_hash_ops;
56 static cfs_hash_ops_t nid_hash_ops;
57 static cfs_hash_ops_t nid_stat_hash_ops;
59 /*********** string parsing utils *********/
61 /* returns 0 if we find this key in the buffer, else 1 */
62 int class_find_param(char *buf, char *key, char **valp)
69 if ((ptr = strstr(buf, key)) == NULL)
73 *valp = ptr + strlen(key);
79 * Finds a parameter in \a params and copies it to \a copy.
81 * Leading spaces are skipped. Next space or end of string is the
82 * parameter terminator with the exception that spaces inside single or double
83 * quotes get included into a parameter. The parameter is copied into \a copy
84 * which has to be allocated big enough by a caller, quotes are stripped in
85 * the copy and the copy is terminated by 0.
87 * On return \a params is set to next parameter or to NULL if last
88 * parameter is returned.
90 * \retval 0 if parameter is returned in \a copy
92 * \retval -EINVAL if unbalanced quota is found
94 int class_get_next_param(char **params, char *copy)
109 q1 = strpbrk(str, " '\"");
112 memcpy(copy, str, len);
119 memcpy(copy, str, len);
125 memcpy(copy, str, len);
128 /* search for the matching closing quote */
130 q2 = strchr(str, *q1);
132 CERROR("Unbalanced quota in parameters: \"%s\"\n",
137 memcpy(copy, str, len);
144 /* returns 0 if this is the first key in the buffer, else 1.
145 valp points to first char after key. */
146 int class_match_param(char *buf, char *key, char **valp)
151 if (memcmp(buf, key, strlen(key)) != 0)
155 *valp = buf + strlen(key);
163 endh is set to next separator */
164 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
170 while (*buf == ',' || *buf == ':')
172 if (*buf == ' ' || *buf == '/' || *buf == '\0')
175 /* nid separators or end of nids */
176 endp = strpbrk(buf, ",: /");
178 endp = buf + strlen(buf);
182 *nid = libcfs_str2nid(buf);
183 if (*nid == LNET_NID_ANY) {
184 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
192 CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
196 EXPORT_SYMBOL(class_find_param);
197 EXPORT_SYMBOL(class_get_next_param);
198 EXPORT_SYMBOL(class_match_param);
199 EXPORT_SYMBOL(class_parse_nid);
201 /********************** class fns **********************/
204 * Create a new device and set the type, name and uuid. If successful, the new
205 * device can be accessed by either name or uuid.
207 int class_attach(struct lustre_cfg *lcfg)
209 struct obd_device *obd = NULL;
210 char *typename, *name, *uuid;
214 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
215 CERROR("No type passed!\n");
218 typename = lustre_cfg_string(lcfg, 1);
220 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
221 CERROR("No name passed!\n");
224 name = lustre_cfg_string(lcfg, 0);
226 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
227 CERROR("No UUID passed!\n");
230 uuid = lustre_cfg_string(lcfg, 2);
232 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
233 MKSTR(typename), MKSTR(name), MKSTR(uuid));
235 obd = class_newdev(typename, name);
237 /* Already exists or out of obds */
240 CERROR("Cannot create device %s of type %s : %d\n",
244 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
246 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
247 "obd %p obd_magic %08X != %08X\n",
248 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
249 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
250 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
252 cfs_rwlock_init(&obd->obd_pool_lock);
253 obd->obd_pool_limit = 0;
254 obd->obd_pool_slv = 0;
256 CFS_INIT_LIST_HEAD(&obd->obd_exports);
257 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
258 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
259 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
260 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
261 cfs_spin_lock_init(&obd->obd_nid_lock);
262 cfs_spin_lock_init(&obd->obd_dev_lock);
263 cfs_sema_init(&obd->obd_dev_sem, 1);
264 cfs_spin_lock_init(&obd->obd_osfs_lock);
265 /* obd->obd_osfs_age must be set to a value in the distant
266 * past to guarantee a fresh statfs is fetched on mount. */
267 obd->obd_osfs_age = cfs_time_shift_64(-1000);
269 /* XXX belongs in setup not attach */
270 cfs_init_rwsem(&obd->obd_observer_link_sem);
272 cfs_init_timer(&obd->obd_recovery_timer);
273 cfs_spin_lock_init(&obd->obd_processing_task_lock);
274 cfs_waitq_init(&obd->obd_next_transno_waitq);
275 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
276 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
277 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
278 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
279 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
281 llog_group_init(&obd->obd_olg, FILTER_GROUP_LLOG);
284 if (len >= sizeof(obd->obd_uuid)) {
285 CERROR("uuid must be < %d bytes long\n",
286 (int)sizeof(obd->obd_uuid));
287 GOTO(out, rc = -EINVAL);
289 memcpy(obd->obd_uuid.uuid, uuid, len);
292 if (OBP(obd, attach)) {
293 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
295 GOTO(out, rc = -EINVAL);
298 /* Detach drops this */
299 cfs_spin_lock(&obd->obd_dev_lock);
300 cfs_atomic_set(&obd->obd_refcount, 1);
301 cfs_spin_unlock(&obd->obd_dev_lock);
302 lu_ref_init(&obd->obd_reference);
303 lu_ref_add(&obd->obd_reference, "attach", obd);
305 obd->obd_attached = 1;
306 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
307 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
311 class_release_dev(obd);
316 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
319 struct obd_export *exp;
322 LASSERT(obd != NULL);
323 LASSERTF(obd == class_num2obd(obd->obd_minor),
324 "obd %p != obd_devs[%d] %p\n",
325 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
326 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
327 "obd %p obd_magic %08x != %08x\n",
328 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
330 /* have we attached a type to this device? */
331 if (!obd->obd_attached) {
332 CERROR("Device %d not attached\n", obd->obd_minor);
336 if (obd->obd_set_up) {
337 CERROR("Device %d already setup (type %s)\n",
338 obd->obd_minor, obd->obd_type->typ_name);
342 /* is someone else setting us up right now? (attach inits spinlock) */
343 cfs_spin_lock(&obd->obd_dev_lock);
344 if (obd->obd_starting) {
345 cfs_spin_unlock(&obd->obd_dev_lock);
346 CERROR("Device %d setup in progress (type %s)\n",
347 obd->obd_minor, obd->obd_type->typ_name);
350 /* just leave this on forever. I can't use obd_set_up here because
351 other fns check that status, and we're not actually set up yet. */
352 obd->obd_starting = 1;
353 obd->obd_uuid_hash = NULL;
354 obd->obd_nid_hash = NULL;
355 obd->obd_nid_stats_hash = NULL;
356 cfs_spin_unlock(&obd->obd_dev_lock);
358 /* create an uuid-export lustre hash */
359 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
363 if (!obd->obd_uuid_hash)
364 GOTO(err_hash, err = -ENOMEM);
366 /* create a nid-export lustre hash */
367 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
371 if (!obd->obd_nid_hash)
372 GOTO(err_hash, err = -ENOMEM);
374 /* create a nid-stats lustre hash */
375 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
376 HASH_NID_STATS_CUR_BITS,
377 HASH_NID_STATS_CUR_BITS,
378 &nid_stat_hash_ops, 0);
379 if (!obd->obd_nid_stats_hash)
380 GOTO(err_hash, err = -ENOMEM);
382 exp = class_new_export(obd, &obd->obd_uuid);
384 GOTO(err_hash, err = PTR_ERR(exp));
386 obd->obd_self_export = exp;
387 cfs_list_del_init(&exp->exp_obd_chain_timed);
388 class_export_put(exp);
390 err = obd_setup(obd, lcfg);
396 cfs_spin_lock(&obd->obd_dev_lock);
397 /* cleanup drops this */
398 class_incref(obd, "setup", obd);
399 cfs_spin_unlock(&obd->obd_dev_lock);
401 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
402 obd->obd_name, obd->obd_uuid.uuid);
406 if (obd->obd_self_export) {
407 class_unlink_export(obd->obd_self_export);
408 obd->obd_self_export = NULL;
411 if (obd->obd_uuid_hash) {
412 cfs_hash_destroy(obd->obd_uuid_hash);
413 obd->obd_uuid_hash = NULL;
415 if (obd->obd_nid_hash) {
416 cfs_hash_destroy(obd->obd_nid_hash);
417 obd->obd_nid_hash = NULL;
419 if (obd->obd_nid_stats_hash) {
420 cfs_hash_destroy(obd->obd_nid_stats_hash);
421 obd->obd_nid_stats_hash = NULL;
423 obd->obd_starting = 0;
424 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
428 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
432 if (obd->obd_set_up) {
433 CERROR("OBD device %d still set up\n", obd->obd_minor);
437 cfs_spin_lock(&obd->obd_dev_lock);
438 if (!obd->obd_attached) {
439 cfs_spin_unlock(&obd->obd_dev_lock);
440 CERROR("OBD device %d not attached\n", obd->obd_minor);
443 obd->obd_attached = 0;
444 cfs_spin_unlock(&obd->obd_dev_lock);
446 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
447 obd->obd_name, obd->obd_uuid.uuid);
449 class_decref(obd, "attach", obd);
451 /* not strictly necessary, but cleans up eagerly */
452 obd_zombie_impexp_cull();
457 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
463 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
465 if (!obd->obd_set_up) {
466 CERROR("Device %d not setup\n", obd->obd_minor);
470 cfs_spin_lock(&obd->obd_dev_lock);
471 if (obd->obd_stopping) {
472 cfs_spin_unlock(&obd->obd_dev_lock);
473 CERROR("OBD %d already stopping\n", obd->obd_minor);
476 /* Leave this on forever */
477 obd->obd_stopping = 1;
478 cfs_spin_unlock(&obd->obd_dev_lock);
480 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
481 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
487 LCONSOLE_WARN("Failing over %s\n",
490 obd->obd_no_transno = 1;
491 obd->obd_no_recov = 1;
492 if (OBP(obd, iocontrol)) {
493 obd_iocontrol(OBD_IOC_SYNC,
494 obd->obd_self_export,
496 /* Set the obd readonly if we can */
497 obd_iocontrol(OBD_IOC_SET_READONLY,
498 obd->obd_self_export,
503 CERROR("Unrecognised flag '%c'\n", *flag);
507 LASSERT(obd->obd_self_export);
509 /* The three references that should be remaining are the
510 * obd_self_export and the attach and setup references. */
511 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
512 /* refcounf - 3 might be the number of real exports
513 (excluding self export). But class_incref is called
514 by other things as well, so don't count on it. */
515 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
516 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
517 dump_exports(obd, 0);
518 class_disconnect_exports(obd);
521 /* destroy an uuid-export hash body */
522 if (obd->obd_uuid_hash) {
523 cfs_hash_destroy(obd->obd_uuid_hash);
524 obd->obd_uuid_hash = NULL;
527 /* destroy a nid-export hash body */
528 if (obd->obd_nid_hash) {
529 cfs_hash_destroy(obd->obd_nid_hash);
530 obd->obd_nid_hash = NULL;
533 /* destroy a nid-stats hash body */
534 if (obd->obd_nid_stats_hash) {
535 cfs_hash_destroy(obd->obd_nid_stats_hash);
536 obd->obd_nid_stats_hash = NULL;
539 /* Precleanup, we must make sure all exports get destroyed. */
540 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
542 CERROR("Precleanup %s returned %d\n",
544 class_decref(obd, "setup", obd);
549 struct obd_device *class_incref(struct obd_device *obd,
550 const char *scope, const void *source)
552 lu_ref_add_atomic(&obd->obd_reference, scope, source);
553 cfs_atomic_inc(&obd->obd_refcount);
554 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
555 cfs_atomic_read(&obd->obd_refcount));
560 void class_decref(struct obd_device *obd, const char *scope, const void *source)
565 cfs_spin_lock(&obd->obd_dev_lock);
566 cfs_atomic_dec(&obd->obd_refcount);
567 refs = cfs_atomic_read(&obd->obd_refcount);
568 cfs_spin_unlock(&obd->obd_dev_lock);
569 lu_ref_del(&obd->obd_reference, scope, source);
571 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
573 if ((refs == 1) && obd->obd_stopping) {
574 /* All exports have been destroyed; there should
575 be no more in-progress ops by this point.*/
577 cfs_spin_lock(&obd->obd_self_export->exp_lock);
578 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
579 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
581 /* note that we'll recurse into class_decref again */
582 class_unlink_export(obd->obd_self_export);
587 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
588 obd->obd_name, obd->obd_uuid.uuid);
589 LASSERT(!obd->obd_attached);
590 if (obd->obd_stopping) {
591 /* If we're not stopping, we were never set up */
592 err = obd_cleanup(obd);
594 CERROR("Cleanup %s returned %d\n",
597 if (OBP(obd, detach)) {
598 err = OBP(obd, detach)(obd);
600 CERROR("Detach returned %d\n", err);
602 class_release_dev(obd);
606 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
608 struct obd_import *imp;
609 struct obd_uuid uuid;
613 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
614 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
615 CERROR("invalid conn_uuid\n");
618 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
619 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
620 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
621 CERROR("can't add connection on non-client dev\n");
625 imp = obd->u.cli.cl_import;
627 CERROR("try to add conn on immature client dev\n");
631 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
632 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
637 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
639 struct obd_import *imp;
640 struct obd_uuid uuid;
644 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
645 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
646 CERROR("invalid conn_uuid\n");
649 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
650 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
651 CERROR("can't del connection on non-client dev\n");
655 imp = obd->u.cli.cl_import;
657 CERROR("try to del conn on immature client dev\n");
661 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
662 rc = obd_del_conn(imp, &uuid);
667 CFS_LIST_HEAD(lustre_profile_list);
669 struct lustre_profile *class_get_profile(const char * prof)
671 struct lustre_profile *lprof;
674 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
675 if (!strcmp(lprof->lp_profile, prof)) {
682 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
683 int mdclen, char *mdc)
685 struct lustre_profile *lprof;
689 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
691 OBD_ALLOC(lprof, sizeof(*lprof));
694 CFS_INIT_LIST_HEAD(&lprof->lp_list);
696 LASSERT(proflen == (strlen(prof) + 1));
697 OBD_ALLOC(lprof->lp_profile, proflen);
698 if (lprof->lp_profile == NULL)
699 GOTO(out, err = -ENOMEM);
700 memcpy(lprof->lp_profile, prof, proflen);
702 LASSERT(osclen == (strlen(osc) + 1));
703 OBD_ALLOC(lprof->lp_dt, osclen);
704 if (lprof->lp_dt == NULL)
705 GOTO(out, err = -ENOMEM);
706 memcpy(lprof->lp_dt, osc, osclen);
709 LASSERT(mdclen == (strlen(mdc) + 1));
710 OBD_ALLOC(lprof->lp_md, mdclen);
711 if (lprof->lp_md == NULL)
712 GOTO(out, err = -ENOMEM);
713 memcpy(lprof->lp_md, mdc, mdclen);
716 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
721 OBD_FREE(lprof->lp_md, mdclen);
723 OBD_FREE(lprof->lp_dt, osclen);
724 if (lprof->lp_profile)
725 OBD_FREE(lprof->lp_profile, proflen);
726 OBD_FREE(lprof, sizeof(*lprof));
730 void class_del_profile(const char *prof)
732 struct lustre_profile *lprof;
735 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
737 lprof = class_get_profile(prof);
739 cfs_list_del(&lprof->lp_list);
740 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
741 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
743 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
744 OBD_FREE(lprof, sizeof *lprof);
750 void class_del_profiles(void)
752 struct lustre_profile *lprof, *n;
755 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
756 cfs_list_del(&lprof->lp_list);
757 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
758 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
760 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
761 OBD_FREE(lprof, sizeof *lprof);
766 static int class_set_global(char *ptr, int val) {
769 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
771 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
773 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
775 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
776 at_early_margin = val;
777 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
782 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
788 /* We can't call ll_process_config directly because it lives in a module that
789 must be loaded after this one. */
790 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
792 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
794 client_process_config = cpc;
796 EXPORT_SYMBOL(lustre_register_client_process_config);
798 int class_process_config(struct lustre_cfg *lcfg)
800 struct obd_device *obd;
803 LASSERT(lcfg && !IS_ERR(lcfg));
804 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
806 /* Commands that don't need a device */
807 switch(lcfg->lcfg_command) {
809 err = class_attach(lcfg);
812 case LCFG_ADD_UUID: {
813 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
814 " (%s)\n", lustre_cfg_string(lcfg, 1),
815 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
817 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
820 case LCFG_DEL_UUID: {
821 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
822 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
823 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
825 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
828 case LCFG_MOUNTOPT: {
829 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
830 lustre_cfg_string(lcfg, 1),
831 lustre_cfg_string(lcfg, 2),
832 lustre_cfg_string(lcfg, 3));
833 /* set these mount options somewhere, so ll_fill_super
835 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
836 lustre_cfg_string(lcfg, 1),
837 LUSTRE_CFG_BUFLEN(lcfg, 2),
838 lustre_cfg_string(lcfg, 2),
839 LUSTRE_CFG_BUFLEN(lcfg, 3),
840 lustre_cfg_string(lcfg, 3));
843 case LCFG_DEL_MOUNTOPT: {
844 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
845 lustre_cfg_string(lcfg, 1));
846 class_del_profile(lustre_cfg_string(lcfg, 1));
849 case LCFG_SET_TIMEOUT: {
850 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
851 obd_timeout, lcfg->lcfg_num);
852 obd_timeout = max(lcfg->lcfg_num, 1U);
855 case LCFG_SET_LDLM_TIMEOUT: {
856 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
857 ldlm_timeout, lcfg->lcfg_num);
858 ldlm_timeout = max(lcfg->lcfg_num, 1U);
859 if (ldlm_timeout >= obd_timeout)
860 ldlm_timeout = max(obd_timeout / 3, 1U);
864 case LCFG_SET_UPCALL: {
865 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
866 /* COMPAT_146 Don't fail on old configs */
870 struct cfg_marker *marker;
871 marker = lustre_cfg_buf(lcfg, 1);
872 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
873 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
878 /* llite has no obd */
879 if ((class_match_param(lustre_cfg_string(lcfg, 1),
880 PARAM_LLITE, 0) == 0) &&
881 client_process_config) {
882 err = (*client_process_config)(lcfg);
884 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
885 PARAM_SYS, &tmp) == 0)) {
886 /* Global param settings */
887 err = class_set_global(tmp, lcfg->lcfg_num);
888 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
889 unknown globals would cause config to fail */
891 CWARN("Ignoring unknown param %s\n", tmp);
900 /* Commands that require a device */
901 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
903 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
904 CERROR("this lcfg command requires a device name\n");
906 CERROR("no device for: %s\n",
907 lustre_cfg_string(lcfg, 0));
909 GOTO(out, err = -EINVAL);
912 switch(lcfg->lcfg_command) {
914 err = class_setup(obd, lcfg);
918 err = class_detach(obd, lcfg);
922 err = class_cleanup(obd, lcfg);
925 case LCFG_ADD_CONN: {
926 err = class_add_conn(obd, lcfg);
929 case LCFG_DEL_CONN: {
930 err = class_del_conn(obd, lcfg);
933 case LCFG_POOL_NEW: {
934 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
938 case LCFG_POOL_ADD: {
939 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
940 lustre_cfg_string(lcfg, 3));
944 case LCFG_POOL_REM: {
945 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
946 lustre_cfg_string(lcfg, 3));
950 case LCFG_POOL_DEL: {
951 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
956 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
962 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
963 CWARN("Ignoring error %d on optional command %#x\n", err,
970 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
971 struct lustre_cfg *lcfg, void *data)
974 struct lprocfs_vars *var;
976 int i, keylen, vallen;
977 int matched = 0, j = 0;
982 if (lcfg->lcfg_command != LCFG_PARAM) {
983 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
987 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
988 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
989 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
990 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
991 key = lustre_cfg_buf(lcfg, i);
992 /* Strip off prefix */
993 class_match_param(key, prefix, &key);
994 sval = strchr(key, '=');
995 if (!sval || (*(sval + 1) == 0)) {
996 CERROR("Can't parse param %s (missing '=')\n", key);
997 /* rc = -EINVAL; continue parsing other params */
1000 keylen = sval - key;
1002 vallen = strlen(sval);
1005 /* Search proc entries */
1006 while (lvars[j].name) {
1008 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1009 keylen == strlen(var->name)) {
1012 if (var->write_fptr) {
1016 rc = (var->write_fptr)(NULL, sval,
1025 /* If the prefix doesn't match, return error so we
1026 can pass it down the stack */
1027 if (strnchr(key, keylen, '.'))
1029 CERROR("%s: unknown param %s\n",
1030 (char *)lustre_cfg_string(lcfg, 0), key);
1031 /* rc = -EINVAL; continue parsing other params */
1033 } else if (rc < 0) {
1034 CERROR("writing proc entry %s err %d\n",
1038 LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
1039 lustre_cfg_string(lcfg, 0),
1040 (int)strlen(prefix) - 1, prefix,
1041 (int)(sval - key - 1), key, sval);
1051 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1052 /* Don't throw config error */
1057 int class_config_dump_handler(struct llog_handle * handle,
1058 struct llog_rec_hdr *rec, void *data);
1061 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1063 #define lustre_check_exclusion(a,b) 0
1066 static int class_config_llog_handler(struct llog_handle * handle,
1067 struct llog_rec_hdr *rec, void *data)
1069 struct config_llog_instance *clli = data;
1070 int cfg_len = rec->lrh_len;
1071 char *cfg_buf = (char*) (rec + 1);
1075 //class_config_dump_handler(handle, rec, data);
1077 switch (rec->lrh_type) {
1079 struct lustre_cfg *lcfg, *lcfg_new;
1080 struct lustre_cfg_bufs bufs;
1081 char *inst_name = NULL;
1083 int inst = 0, swab = 0;
1085 lcfg = (struct lustre_cfg *)cfg_buf;
1086 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1087 lustre_swab_lustre_cfg(lcfg);
1091 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1095 /* Figure out config state info */
1096 if (lcfg->lcfg_command == LCFG_MARKER) {
1097 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1098 lustre_swab_cfg_marker(marker, swab,
1099 LUSTRE_CFG_BUFLEN(lcfg, 1));
1100 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1101 clli->cfg_flags, marker->cm_flags);
1102 if (marker->cm_flags & CM_START) {
1103 /* all previous flags off */
1104 clli->cfg_flags = CFG_F_MARKER;
1105 if (marker->cm_flags & CM_SKIP) {
1106 clli->cfg_flags |= CFG_F_SKIP;
1107 CDEBUG(D_CONFIG, "SKIP #%d\n",
1109 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1111 lustre_check_exclusion(clli->cfg_sb,
1112 marker->cm_tgtname))) {
1113 clli->cfg_flags |= CFG_F_EXCLUDE;
1114 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1117 } else if (marker->cm_flags & CM_END) {
1118 clli->cfg_flags = 0;
1121 /* A config command without a start marker before it is
1122 illegal (post 146) */
1123 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1124 !(clli->cfg_flags & CFG_F_MARKER) &&
1125 (lcfg->lcfg_command != LCFG_MARKER)) {
1126 CWARN("Config not inside markers, ignoring! "
1127 "(inst: %s, uuid: %s, flags: %#x)\n",
1128 clli->cfg_instance ? clli->cfg_instance : "<null>",
1129 clli->cfg_uuid.uuid, clli->cfg_flags);
1130 clli->cfg_flags |= CFG_F_SKIP;
1132 if (clli->cfg_flags & CFG_F_SKIP) {
1133 CDEBUG(D_CONFIG, "skipping %#x\n",
1136 /* No processing! */
1141 * For interoperability between 1.8 and 2.0,
1142 * rename "mds" obd device type to "mdt".
1145 char *typename = lustre_cfg_string(lcfg, 1);
1146 char *index = lustre_cfg_string(lcfg, 2);
1148 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1149 strcmp(typename, "mds") == 0)) {
1150 CWARN("For 1.8 interoperability, rename obd "
1151 "type from mds to mdt\n");
1154 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1155 strcmp(index, "type") == 0)) {
1156 CDEBUG(D_INFO, "For 1.8 interoperability, "
1157 "set this index to '0'\n");
1163 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1164 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1165 /* Add inactive instead */
1166 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1168 lustre_cfg_bufs_init(&bufs, lcfg);
1170 if (clli && clli->cfg_instance &&
1171 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1173 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1174 strlen(clli->cfg_instance) + 1;
1175 OBD_ALLOC(inst_name, inst_len);
1176 if (inst_name == NULL)
1177 GOTO(out, rc = -ENOMEM);
1178 sprintf(inst_name, "%s-%s",
1179 lustre_cfg_string(lcfg, 0),
1180 clli->cfg_instance);
1181 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1182 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1183 lcfg->lcfg_command, inst_name);
1186 /* we override the llog's uuid for clients, to insure they
1188 if (clli && clli->cfg_instance &&
1189 lcfg->lcfg_command == LCFG_ATTACH) {
1190 lustre_cfg_bufs_set_string(&bufs, 2,
1191 clli->cfg_uuid.uuid);
1194 * sptlrpc config record, we expect 2 data segments:
1195 * [0]: fs_name/target_name,
1197 * moving them to index [1] and [2], and insert MGC's
1198 * obdname at index [0].
1200 if (clli && clli->cfg_instance == NULL &&
1201 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1202 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1203 bufs.lcfg_buflen[1]);
1204 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1205 bufs.lcfg_buflen[0]);
1206 lustre_cfg_bufs_set_string(&bufs, 0,
1210 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1212 lcfg_new->lcfg_num = lcfg->lcfg_num;
1213 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1215 /* XXX Hack to try to remain binary compatible with
1216 * pre-newconfig logs */
1217 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1218 (lcfg->lcfg_nid >> 32) == 0) {
1219 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1221 lcfg_new->lcfg_nid =
1222 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1223 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1224 lcfg->lcfg_nal, addr,
1225 libcfs_nid2str(lcfg_new->lcfg_nid));
1227 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1230 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1232 rc = class_process_config(lcfg_new);
1233 lustre_cfg_free(lcfg_new);
1236 OBD_FREE(inst_name, inst_len);
1240 CERROR("Unknown llog record type %#x encountered\n",
1246 CERROR("Err %d on cfg command:\n", rc);
1247 class_config_dump_handler(handle, rec, data);
1252 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1253 struct config_llog_instance *cfg)
1255 struct llog_process_cat_data cd = {0, 0};
1256 struct llog_handle *llh;
1260 CDEBUG(D_INFO, "looking up llog %s\n", name);
1261 rc = llog_create(ctxt, &llh, NULL, name);
1265 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1267 GOTO(parse_out, rc);
1269 /* continue processing from where we last stopped to end-of-log */
1271 cd.lpcd_first_idx = cfg->cfg_last_idx;
1272 cd.lpcd_last_idx = 0;
1274 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1276 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1277 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1280 cfg->cfg_last_idx = cd.lpcd_last_idx;
1283 rc2 = llog_close(llh);
1290 int class_config_dump_handler(struct llog_handle * handle,
1291 struct llog_rec_hdr *rec, void *data)
1293 int cfg_len = rec->lrh_len;
1294 char *cfg_buf = (char*) (rec + 1);
1295 char *outstr, *ptr, *end;
1299 OBD_ALLOC(outstr, 256);
1305 if (rec->lrh_type == OBD_CFG_REC) {
1306 struct lustre_cfg *lcfg;
1309 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1312 lcfg = (struct lustre_cfg *)cfg_buf;
1314 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1315 lcfg->lcfg_command);
1316 if (lcfg->lcfg_flags) {
1317 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1320 if (lcfg->lcfg_num) {
1321 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1324 if (lcfg->lcfg_nid) {
1325 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1326 libcfs_nid2str(lcfg->lcfg_nid),
1329 if (lcfg->lcfg_command == LCFG_MARKER) {
1330 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1331 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1332 marker->cm_step, marker->cm_flags,
1333 marker->cm_tgtname, marker->cm_comment);
1335 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1336 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1337 lustre_cfg_string(lcfg, i));
1340 LCONSOLE(D_WARNING, " %s\n", outstr);
1342 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1346 OBD_FREE(outstr, 256);
1350 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1351 struct config_llog_instance *cfg)
1353 struct llog_handle *llh;
1357 LCONSOLE_INFO("Dumping config log %s\n", name);
1359 rc = llog_create(ctxt, &llh, NULL, name);
1363 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1365 GOTO(parse_out, rc);
1367 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1369 rc2 = llog_close(llh);
1373 LCONSOLE_INFO("End config log %s\n", name);
1378 /* Cleanup and detach */
1379 int class_manual_cleanup(struct obd_device *obd)
1382 struct lustre_cfg *lcfg;
1383 struct lustre_cfg_bufs bufs;
1388 CERROR("empty cleanup\n");
1397 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1398 obd->obd_name, flags);
1400 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1401 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1402 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1406 rc = class_process_config(lcfg);
1408 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1412 /* the lcfg is almost the same for both ops */
1413 lcfg->lcfg_command = LCFG_DETACH;
1414 rc = class_process_config(lcfg);
1416 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1418 lustre_cfg_free(lcfg);
1423 * uuid<->export lustre hash operations
1427 uuid_hash(cfs_hash_t *hs, void *key, unsigned mask)
1429 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1430 sizeof(((struct obd_uuid *)key)->uuid), mask);
1434 uuid_key(cfs_hlist_node_t *hnode)
1436 struct obd_export *exp;
1438 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1440 RETURN(&exp->exp_client_uuid);
1444 * NOTE: It is impossible to find an export that is in failed
1445 * state with this function
1448 uuid_compare(void *key, cfs_hlist_node_t *hnode)
1450 struct obd_export *exp;
1453 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1455 RETURN(obd_uuid_equals((struct obd_uuid *)key,&exp->exp_client_uuid) &&
1460 uuid_export_get(cfs_hlist_node_t *hnode)
1462 struct obd_export *exp;
1464 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1465 class_export_get(exp);
1471 uuid_export_put(cfs_hlist_node_t *hnode)
1473 struct obd_export *exp;
1475 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1476 class_export_put(exp);
1481 static cfs_hash_ops_t uuid_hash_ops = {
1482 .hs_hash = uuid_hash,
1484 .hs_compare = uuid_compare,
1485 .hs_get = uuid_export_get,
1486 .hs_put = uuid_export_put,
1491 * nid<->export hash operations
1495 nid_hash(cfs_hash_t *hs, void *key, unsigned mask)
1497 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1501 nid_key(cfs_hlist_node_t *hnode)
1503 struct obd_export *exp;
1505 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1507 RETURN(&exp->exp_connection->c_peer.nid);
1511 * NOTE: It is impossible to find an export that is in failed
1512 * state with this function
1515 nid_compare(void *key, cfs_hlist_node_t *hnode)
1517 struct obd_export *exp;
1520 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1522 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1527 nid_export_get(cfs_hlist_node_t *hnode)
1529 struct obd_export *exp;
1531 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1532 class_export_get(exp);
1538 nid_export_put(cfs_hlist_node_t *hnode)
1540 struct obd_export *exp;
1542 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1543 class_export_put(exp);
1548 static cfs_hash_ops_t nid_hash_ops = {
1549 .hs_hash = nid_hash,
1551 .hs_compare = nid_compare,
1552 .hs_get = nid_export_get,
1553 .hs_put = nid_export_put,
1558 * nid<->nidstats hash operations
1562 nidstats_key(cfs_hlist_node_t *hnode)
1564 struct nid_stat *ns;
1566 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1572 nidstats_compare(void *key, cfs_hlist_node_t *hnode)
1574 RETURN(*(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key);
1578 nidstats_get(cfs_hlist_node_t *hnode)
1580 struct nid_stat *ns;
1582 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1589 nidstats_put(cfs_hlist_node_t *hnode)
1591 struct nid_stat *ns;
1593 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1599 static cfs_hash_ops_t nid_stat_hash_ops = {
1600 .hs_hash = nid_hash,
1601 .hs_key = nidstats_key,
1602 .hs_compare = nidstats_compare,
1603 .hs_get = nidstats_get,
1604 .hs_put = nidstats_put,