4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2014, Intel Corporation.
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
42 #include <obd_class.h>
43 #include <linux/string.h>
44 #include <lustre_disk.h>
45 #include <lustre_ioctl.h>
46 #include <lustre_log.h>
47 #include <lprocfs_status.h>
48 #include <lustre_param.h>
50 #include "llog_internal.h"
52 static struct cfs_hash_ops uuid_hash_ops;
53 static struct cfs_hash_ops nid_hash_ops;
54 static struct cfs_hash_ops nid_stat_hash_ops;
56 /*********** string parsing utils *********/
58 /* returns 0 if we find this key in the buffer, else 1 */
59 int class_find_param(char *buf, char *key, char **valp)
66 if ((ptr = strstr(buf, key)) == NULL)
70 *valp = ptr + strlen(key);
74 EXPORT_SYMBOL(class_find_param);
77 * Check whether the proc parameter \a param is an old parameter or not from
78 * the array \a ptr which contains the mapping from old parameters to new ones.
79 * If it's an old one, then return the pointer to the cfg_interop_param struc-
80 * ture which contains both the old and new parameters.
82 * \param param proc parameter
83 * \param ptr an array which contains the mapping from
84 * old parameters to new ones
86 * \retval valid-pointer pointer to the cfg_interop_param structure
87 * which contains the old and new parameters
88 * \retval NULL \a param or \a ptr is NULL,
89 * or \a param is not an old parameter
91 struct cfg_interop_param *class_find_old_param(const char *param,
92 struct cfg_interop_param *ptr)
97 if (param == NULL || ptr == NULL)
100 value = strchr(param, '=');
102 name_len = strlen(param);
104 name_len = value - param;
106 while (ptr->old_param != NULL) {
107 if (strncmp(param, ptr->old_param, name_len) == 0 &&
108 name_len == strlen(ptr->old_param))
115 EXPORT_SYMBOL(class_find_old_param);
118 * Finds a parameter in \a params and copies it to \a copy.
120 * Leading spaces are skipped. Next space or end of string is the
121 * parameter terminator with the exception that spaces inside single or double
122 * quotes get included into a parameter. The parameter is copied into \a copy
123 * which has to be allocated big enough by a caller, quotes are stripped in
124 * the copy and the copy is terminated by 0.
126 * On return \a params is set to next parameter or to NULL if last
127 * parameter is returned.
129 * \retval 0 if parameter is returned in \a copy
130 * \retval 1 otherwise
131 * \retval -EINVAL if unbalanced quota is found
133 int class_get_next_param(char **params, char *copy)
148 q1 = strpbrk(str, " '\"");
151 memcpy(copy, str, len);
158 memcpy(copy, str, len);
164 memcpy(copy, str, len);
167 /* search for the matching closing quote */
169 q2 = strchr(str, *q1);
171 CERROR("Unbalanced quota in parameters: \"%s\"\n",
176 memcpy(copy, str, len);
182 EXPORT_SYMBOL(class_get_next_param);
184 /* returns 0 if this is the first key in the buffer, else 1.
185 valp points to first char after key. */
186 int class_match_param(char *buf, const char *key, char **valp)
191 if (memcmp(buf, key, strlen(key)) != 0)
195 *valp = buf + strlen(key);
199 EXPORT_SYMBOL(class_match_param);
201 static int parse_nid(char *buf, void *value, int quiet)
203 lnet_nid_t *nid = (lnet_nid_t *)value;
205 *nid = libcfs_str2nid(buf);
206 if (*nid != LNET_NID_ANY)
210 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
214 static int parse_net(char *buf, void *value)
216 __u32 *net = (__u32 *)value;
218 *net = libcfs_str2net(buf);
219 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
231 endh is set to next separator */
232 static int class_parse_value(char *buf, int opc, void *value, char **endh,
241 while (*buf == ',' || *buf == ':')
243 if (*buf == ' ' || *buf == '/' || *buf == '\0')
246 /* nid separators or end of nids */
247 endp = strpbrk(buf, ",: /");
249 endp = buf + strlen(buf);
256 case CLASS_PARSE_NID:
257 rc = parse_nid(buf, value, quiet);
259 case CLASS_PARSE_NET:
260 rc = parse_net(buf, value);
271 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
273 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
275 EXPORT_SYMBOL(class_parse_nid);
277 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
279 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
281 EXPORT_SYMBOL(class_parse_nid_quiet);
283 int class_parse_net(char *buf, __u32 *net, char **endh)
285 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
288 /* 1 param contains key and match
289 * 0 param contains key and not match
290 * -1 param does not contain key
292 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
297 while (class_find_param(buf, key, &buf) == 0) {
298 /* please restrict to the nids pertaining to
299 * the specified nids */
300 while (class_parse_nid(buf, &tmp, &buf) == 0) {
309 int class_match_net(char *buf, char *key, __u32 net)
314 while (class_find_param(buf, key, &buf) == 0) {
315 /* please restrict to the nids pertaining to
316 * the specified networks */
317 while (class_parse_net(buf, &tmp, &buf) == 0) {
326 /********************** class fns **********************/
329 * Create a new obd device and set the type, name and uuid. If successful,
330 * the new device can be accessed by either name or uuid.
332 int class_attach(struct lustre_cfg *lcfg)
334 struct obd_device *obd = NULL;
335 char *typename, *name, *uuid;
339 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
340 CERROR("No type passed!\n");
343 typename = lustre_cfg_string(lcfg, 1);
345 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
346 CERROR("No name passed!\n");
349 name = lustre_cfg_string(lcfg, 0);
351 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
352 CERROR("No UUID passed!\n");
355 uuid = lustre_cfg_string(lcfg, 2);
357 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
358 MKSTR(typename), MKSTR(name), MKSTR(uuid));
360 obd = class_newdev(typename, name);
362 /* Already exists or out of obds */
365 CERROR("Cannot create device %s of type %s : %d\n",
369 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
371 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
372 "obd %p obd_magic %08X != %08X\n",
373 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
374 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
375 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
377 rwlock_init(&obd->obd_pool_lock);
378 obd->obd_pool_limit = 0;
379 obd->obd_pool_slv = 0;
381 INIT_LIST_HEAD(&obd->obd_exports);
382 INIT_LIST_HEAD(&obd->obd_unlinked_exports);
383 INIT_LIST_HEAD(&obd->obd_delayed_exports);
384 INIT_LIST_HEAD(&obd->obd_exports_timed);
385 INIT_LIST_HEAD(&obd->obd_nid_stats);
386 spin_lock_init(&obd->obd_nid_lock);
387 spin_lock_init(&obd->obd_dev_lock);
388 mutex_init(&obd->obd_dev_mutex);
389 spin_lock_init(&obd->obd_osfs_lock);
390 /* obd->obd_osfs_age must be set to a value in the distant
391 * past to guarantee a fresh statfs is fetched on mount. */
392 obd->obd_osfs_age = cfs_time_shift_64(-1000);
394 /* XXX belongs in setup not attach */
395 init_rwsem(&obd->obd_observer_link_sem);
397 cfs_init_timer(&obd->obd_recovery_timer);
398 spin_lock_init(&obd->obd_recovery_task_lock);
399 init_waitqueue_head(&obd->obd_next_transno_waitq);
400 init_waitqueue_head(&obd->obd_evict_inprogress_waitq);
401 INIT_LIST_HEAD(&obd->obd_req_replay_queue);
402 INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
403 INIT_LIST_HEAD(&obd->obd_final_req_queue);
404 INIT_LIST_HEAD(&obd->obd_evict_list);
405 INIT_LIST_HEAD(&obd->obd_lwp_list);
407 llog_group_init(&obd->obd_olg);
409 obd->obd_conn_inprogress = 0;
412 if (len >= sizeof(obd->obd_uuid)) {
413 CERROR("uuid must be < %d bytes long\n",
414 (int)sizeof(obd->obd_uuid));
415 GOTO(out, rc = -EINVAL);
417 memcpy(obd->obd_uuid.uuid, uuid, len);
419 /* Detach drops this */
420 spin_lock(&obd->obd_dev_lock);
421 atomic_set(&obd->obd_refcount, 1);
422 spin_unlock(&obd->obd_dev_lock);
423 lu_ref_init(&obd->obd_reference);
424 lu_ref_add(&obd->obd_reference, "attach", obd);
426 obd->obd_attached = 1;
427 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
428 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
432 class_release_dev(obd);
436 EXPORT_SYMBOL(class_attach);
438 /** Create hashes, self-export, and call type-specific setup.
439 * Setup is effectively the "start this obd" call.
441 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
444 struct obd_export *exp;
447 LASSERT(obd != NULL);
448 LASSERTF(obd == class_num2obd(obd->obd_minor),
449 "obd %p != obd_devs[%d] %p\n",
450 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
451 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
452 "obd %p obd_magic %08x != %08x\n",
453 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
455 /* have we attached a type to this device? */
456 if (!obd->obd_attached) {
457 CERROR("Device %d not attached\n", obd->obd_minor);
461 if (obd->obd_set_up) {
462 CERROR("Device %d already setup (type %s)\n",
463 obd->obd_minor, obd->obd_type->typ_name);
467 /* is someone else setting us up right now? (attach inits spinlock) */
468 spin_lock(&obd->obd_dev_lock);
469 if (obd->obd_starting) {
470 spin_unlock(&obd->obd_dev_lock);
471 CERROR("Device %d setup in progress (type %s)\n",
472 obd->obd_minor, obd->obd_type->typ_name);
475 /* just leave this on forever. I can't use obd_set_up here because
476 other fns check that status, and we're not actually set up yet. */
477 obd->obd_starting = 1;
478 obd->obd_uuid_hash = NULL;
479 obd->obd_nid_hash = NULL;
480 obd->obd_nid_stats_hash = NULL;
481 spin_unlock(&obd->obd_dev_lock);
483 /* create an uuid-export lustre hash */
484 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
487 HASH_UUID_BKT_BITS, 0,
490 &uuid_hash_ops, CFS_HASH_DEFAULT);
491 if (!obd->obd_uuid_hash)
492 GOTO(err_hash, err = -ENOMEM);
494 /* create a nid-export lustre hash */
495 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
498 HASH_NID_BKT_BITS, 0,
501 &nid_hash_ops, CFS_HASH_DEFAULT);
502 if (!obd->obd_nid_hash)
503 GOTO(err_hash, err = -ENOMEM);
505 /* create a nid-stats lustre hash */
506 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
507 HASH_NID_STATS_CUR_BITS,
508 HASH_NID_STATS_MAX_BITS,
509 HASH_NID_STATS_BKT_BITS, 0,
512 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
513 if (!obd->obd_nid_stats_hash)
514 GOTO(err_hash, err = -ENOMEM);
516 exp = class_new_export(obd, &obd->obd_uuid);
518 GOTO(err_hash, err = PTR_ERR(exp));
520 obd->obd_self_export = exp;
521 list_del_init(&exp->exp_obd_chain_timed);
522 class_export_put(exp);
524 err = obd_setup(obd, lcfg);
530 spin_lock(&obd->obd_dev_lock);
531 /* cleanup drops this */
532 class_incref(obd, "setup", obd);
533 spin_unlock(&obd->obd_dev_lock);
535 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
536 obd->obd_name, obd->obd_uuid.uuid);
540 if (obd->obd_self_export) {
541 class_unlink_export(obd->obd_self_export);
542 obd->obd_self_export = NULL;
545 if (obd->obd_uuid_hash) {
546 cfs_hash_putref(obd->obd_uuid_hash);
547 obd->obd_uuid_hash = NULL;
549 if (obd->obd_nid_hash) {
550 cfs_hash_putref(obd->obd_nid_hash);
551 obd->obd_nid_hash = NULL;
553 if (obd->obd_nid_stats_hash) {
554 cfs_hash_putref(obd->obd_nid_stats_hash);
555 obd->obd_nid_stats_hash = NULL;
557 obd->obd_starting = 0;
558 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
561 EXPORT_SYMBOL(class_setup);
563 /** We have finished using this obd and are ready to destroy it.
564 * There can be no more references to this obd.
566 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
570 if (obd->obd_set_up) {
571 CERROR("OBD device %d still set up\n", obd->obd_minor);
575 spin_lock(&obd->obd_dev_lock);
576 if (!obd->obd_attached) {
577 spin_unlock(&obd->obd_dev_lock);
578 CERROR("OBD device %d not attached\n", obd->obd_minor);
581 obd->obd_attached = 0;
582 spin_unlock(&obd->obd_dev_lock);
584 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
585 obd->obd_name, obd->obd_uuid.uuid);
587 class_decref(obd, "attach", obd);
590 EXPORT_SYMBOL(class_detach);
592 /** Start shutting down the obd. There may be in-progess ops when
593 * this is called. We tell them to start shutting down with a call
594 * to class_disconnect_exports().
596 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
602 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
604 if (!obd->obd_set_up) {
605 CERROR("Device %d not setup\n", obd->obd_minor);
609 spin_lock(&obd->obd_dev_lock);
610 if (obd->obd_stopping) {
611 spin_unlock(&obd->obd_dev_lock);
612 CERROR("OBD %d already stopping\n", obd->obd_minor);
615 /* Leave this on forever */
616 obd->obd_stopping = 1;
617 spin_unlock(&obd->obd_dev_lock);
619 /* wait for already-arrived-connections to finish. */
620 while (obd->obd_conn_inprogress > 0)
624 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
625 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
631 LCONSOLE_WARN("Failing over %s\n",
634 obd->obd_no_transno = 1;
635 obd->obd_no_recov = 1;
636 if (OBP(obd, iocontrol)) {
637 obd_iocontrol(OBD_IOC_SYNC,
638 obd->obd_self_export,
643 CERROR("Unrecognised flag '%c'\n", *flag);
647 LASSERT(obd->obd_self_export);
649 /* The three references that should be remaining are the
650 * obd_self_export and the attach and setup references. */
651 if (atomic_read(&obd->obd_refcount) > 3) {
652 /* refcounf - 3 might be the number of real exports
653 (excluding self export). But class_incref is called
654 by other things as well, so don't count on it. */
655 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
656 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
657 dump_exports(obd, 0);
658 class_disconnect_exports(obd);
661 /* Precleanup, we must make sure all exports get destroyed. */
662 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
664 CERROR("Precleanup %s returned %d\n",
667 /* destroy an uuid-export hash body */
668 if (obd->obd_uuid_hash) {
669 cfs_hash_putref(obd->obd_uuid_hash);
670 obd->obd_uuid_hash = NULL;
673 /* destroy a nid-export hash body */
674 if (obd->obd_nid_hash) {
675 cfs_hash_putref(obd->obd_nid_hash);
676 obd->obd_nid_hash = NULL;
679 /* destroy a nid-stats hash body */
680 if (obd->obd_nid_stats_hash) {
681 cfs_hash_putref(obd->obd_nid_stats_hash);
682 obd->obd_nid_stats_hash = NULL;
685 class_decref(obd, "setup", obd);
691 struct obd_device *class_incref(struct obd_device *obd,
692 const char *scope, const void *source)
694 lu_ref_add_atomic(&obd->obd_reference, scope, source);
695 atomic_inc(&obd->obd_refcount);
696 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
697 atomic_read(&obd->obd_refcount));
701 EXPORT_SYMBOL(class_incref);
703 void class_decref(struct obd_device *obd, const char *scope, const void *source)
708 spin_lock(&obd->obd_dev_lock);
709 atomic_dec(&obd->obd_refcount);
710 refs = atomic_read(&obd->obd_refcount);
711 spin_unlock(&obd->obd_dev_lock);
712 lu_ref_del(&obd->obd_reference, scope, source);
714 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
716 if ((refs == 1) && obd->obd_stopping) {
717 /* All exports have been destroyed; there should
718 be no more in-progress ops by this point.*/
720 spin_lock(&obd->obd_self_export->exp_lock);
721 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
722 spin_unlock(&obd->obd_self_export->exp_lock);
724 /* note that we'll recurse into class_decref again */
725 class_unlink_export(obd->obd_self_export);
730 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
731 obd->obd_name, obd->obd_uuid.uuid);
732 LASSERT(!obd->obd_attached);
733 if (obd->obd_stopping) {
734 /* If we're not stopping, we were never set up */
735 err = obd_cleanup(obd);
737 CERROR("Cleanup %s returned %d\n",
741 class_release_dev(obd);
744 EXPORT_SYMBOL(class_decref);
746 /** Add a failover nid location.
747 * Client obd types contact server obd types using this nid list.
749 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
751 struct obd_import *imp;
752 struct obd_uuid uuid;
756 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
757 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
758 CERROR("invalid conn_uuid\n");
761 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
762 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
763 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
764 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
765 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
766 CERROR("can't add connection on non-client dev\n");
770 imp = obd->u.cli.cl_import;
772 CERROR("try to add conn on immature client dev\n");
776 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
777 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
782 /** Remove a failover nid location.
784 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
786 struct obd_import *imp;
787 struct obd_uuid uuid;
791 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
792 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
793 CERROR("invalid conn_uuid\n");
796 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
797 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
798 CERROR("can't del connection on non-client dev\n");
802 imp = obd->u.cli.cl_import;
804 CERROR("try to del conn on immature client dev\n");
808 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
809 rc = obd_del_conn(imp, &uuid);
814 static struct list_head lustre_profile_list =
815 LIST_HEAD_INIT(lustre_profile_list);
817 struct lustre_profile *class_get_profile(const char * prof)
819 struct lustre_profile *lprof;
822 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
823 if (!strcmp(lprof->lp_profile, prof)) {
829 EXPORT_SYMBOL(class_get_profile);
831 /** Create a named "profile".
832 * This defines the mdc and osc names to use for a client.
833 * This also is used to define the lov to be used by a mdt.
835 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
836 int mdclen, char *mdc)
838 struct lustre_profile *lprof;
842 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
844 OBD_ALLOC(lprof, sizeof(*lprof));
847 INIT_LIST_HEAD(&lprof->lp_list);
849 LASSERT(proflen == (strlen(prof) + 1));
850 OBD_ALLOC(lprof->lp_profile, proflen);
851 if (lprof->lp_profile == NULL)
852 GOTO(out, err = -ENOMEM);
853 memcpy(lprof->lp_profile, prof, proflen);
855 LASSERT(osclen == (strlen(osc) + 1));
856 OBD_ALLOC(lprof->lp_dt, osclen);
857 if (lprof->lp_dt == NULL)
858 GOTO(out, err = -ENOMEM);
859 memcpy(lprof->lp_dt, osc, osclen);
862 LASSERT(mdclen == (strlen(mdc) + 1));
863 OBD_ALLOC(lprof->lp_md, mdclen);
864 if (lprof->lp_md == NULL)
865 GOTO(out, err = -ENOMEM);
866 memcpy(lprof->lp_md, mdc, mdclen);
869 list_add(&lprof->lp_list, &lustre_profile_list);
874 OBD_FREE(lprof->lp_md, mdclen);
876 OBD_FREE(lprof->lp_dt, osclen);
877 if (lprof->lp_profile)
878 OBD_FREE(lprof->lp_profile, proflen);
879 OBD_FREE(lprof, sizeof(*lprof));
883 void class_del_profile(const char *prof)
885 struct lustre_profile *lprof;
888 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
890 lprof = class_get_profile(prof);
892 list_del(&lprof->lp_list);
893 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
894 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
896 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
897 OBD_FREE(lprof, sizeof *lprof);
901 EXPORT_SYMBOL(class_del_profile);
904 void class_del_profiles(void)
906 struct lustre_profile *lprof, *n;
909 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
910 list_del(&lprof->lp_list);
911 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
912 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
914 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
915 OBD_FREE(lprof, sizeof *lprof);
919 EXPORT_SYMBOL(class_del_profiles);
921 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
924 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
926 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
928 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
930 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
931 at_early_margin = val;
932 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
934 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
935 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
936 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
940 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
945 /* We can't call ll_process_config or lquota_process_config directly because
946 * it lives in a module that must be loaded after this one. */
947 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
948 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
950 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
952 client_process_config = cpc;
954 EXPORT_SYMBOL(lustre_register_client_process_config);
957 * Rename the proc parameter in \a cfg with a new name \a new_name.
959 * \param cfg config structure which contains the proc parameter
960 * \param new_name new name of the proc parameter
962 * \retval valid-pointer pointer to the newly-allocated config structure
963 * which contains the renamed proc parameter
964 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
965 * not contain a proc parameter
966 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
968 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
969 const char *new_name)
971 struct lustre_cfg_bufs *bufs = NULL;
972 struct lustre_cfg *new_cfg = NULL;
974 char *new_param = NULL;
980 if (cfg == NULL || new_name == NULL)
981 RETURN(ERR_PTR(-EINVAL));
983 param = lustre_cfg_string(cfg, 1);
985 RETURN(ERR_PTR(-EINVAL));
987 value = strchr(param, '=');
989 name_len = strlen(param);
991 name_len = value - param;
993 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
995 OBD_ALLOC(new_param, new_len);
996 if (new_param == NULL)
997 RETURN(ERR_PTR(-ENOMEM));
999 strcpy(new_param, new_name);
1001 strcat(new_param, value);
1003 OBD_ALLOC_PTR(bufs);
1005 OBD_FREE(new_param, new_len);
1006 RETURN(ERR_PTR(-ENOMEM));
1009 lustre_cfg_bufs_reset(bufs, NULL);
1010 lustre_cfg_bufs_init(bufs, cfg);
1011 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1013 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
1014 OBD_FREE(new_param, new_len);
1016 if (new_cfg == NULL)
1017 RETURN(ERR_PTR(-ENOMEM));
1019 new_cfg->lcfg_num = cfg->lcfg_num;
1020 new_cfg->lcfg_flags = cfg->lcfg_flags;
1021 new_cfg->lcfg_nid = cfg->lcfg_nid;
1022 new_cfg->lcfg_nal = cfg->lcfg_nal;
1026 EXPORT_SYMBOL(lustre_cfg_rename);
1028 static int process_param2_config(struct lustre_cfg *lcfg)
1030 char *param = lustre_cfg_string(lcfg, 1);
1031 char *upcall = lustre_cfg_string(lcfg, 2);
1033 [0] = "/usr/sbin/lctl",
1038 struct timeval start;
1043 /* Add upcall processing here. Now only lctl is supported */
1044 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1045 CERROR("Unsupported upcall %s\n", upcall);
1049 do_gettimeofday(&start);
1050 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1051 do_gettimeofday(&end);
1054 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1055 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1056 cfs_timeval_sub(&end, &start, NULL));
1058 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1059 argv[0], argv[1], argv[2],
1060 cfs_timeval_sub(&end, &start, NULL));
1067 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1069 quota_process_config = qpc;
1071 EXPORT_SYMBOL(lustre_register_quota_process_config);
1073 /** Process configuration commands given in lustre_cfg form.
1074 * These may come from direct calls (e.g. class_manual_cleanup)
1075 * or processing the config llog, or ioctl from lctl.
1077 int class_process_config(struct lustre_cfg *lcfg)
1079 struct obd_device *obd;
1082 LASSERT(lcfg && !IS_ERR(lcfg));
1083 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1085 /* Commands that don't need a device */
1086 switch(lcfg->lcfg_command) {
1088 err = class_attach(lcfg);
1091 case LCFG_ADD_UUID: {
1092 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1093 " (%s)\n", lustre_cfg_string(lcfg, 1),
1094 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1096 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1099 case LCFG_DEL_UUID: {
1100 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1101 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1102 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1104 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1107 case LCFG_MOUNTOPT: {
1108 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1109 lustre_cfg_string(lcfg, 1),
1110 lustre_cfg_string(lcfg, 2),
1111 lustre_cfg_string(lcfg, 3));
1112 /* set these mount options somewhere, so ll_fill_super
1114 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1115 lustre_cfg_string(lcfg, 1),
1116 LUSTRE_CFG_BUFLEN(lcfg, 2),
1117 lustre_cfg_string(lcfg, 2),
1118 LUSTRE_CFG_BUFLEN(lcfg, 3),
1119 lustre_cfg_string(lcfg, 3));
1122 case LCFG_DEL_MOUNTOPT: {
1123 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1124 lustre_cfg_string(lcfg, 1));
1125 class_del_profile(lustre_cfg_string(lcfg, 1));
1128 case LCFG_SET_TIMEOUT: {
1129 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1130 obd_timeout, lcfg->lcfg_num);
1131 obd_timeout = max(lcfg->lcfg_num, 1U);
1132 obd_timeout_set = 1;
1135 case LCFG_SET_LDLM_TIMEOUT: {
1136 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1137 ldlm_timeout, lcfg->lcfg_num);
1138 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1139 if (ldlm_timeout >= obd_timeout)
1140 ldlm_timeout = max(obd_timeout / 3, 1U);
1141 ldlm_timeout_set = 1;
1144 case LCFG_SET_UPCALL: {
1145 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1146 /* COMPAT_146 Don't fail on old configs */
1150 struct cfg_marker *marker;
1151 marker = lustre_cfg_buf(lcfg, 1);
1152 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1153 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1158 /* llite has no obd */
1159 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1160 PARAM_LLITE, NULL) == 0) &&
1161 client_process_config) {
1162 err = (*client_process_config)(lcfg);
1164 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1165 PARAM_SYS, &tmp) == 0)) {
1166 /* Global param settings */
1167 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
1169 * Client or server should not fail to mount if
1170 * it hits an unknown configuration parameter.
1173 CWARN("Ignoring unknown param %s\n", tmp);
1176 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1177 PARAM_QUOTA, &tmp) == 0) &&
1178 quota_process_config) {
1179 err = (*quota_process_config)(lcfg);
1185 case LCFG_SET_PARAM: {
1186 err = process_param2_config(lcfg);
1190 /* Commands that require a device */
1191 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1193 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1194 CERROR("this lcfg command requires a device name\n");
1196 CERROR("no device for: %s\n",
1197 lustre_cfg_string(lcfg, 0));
1199 GOTO(out, err = -EINVAL);
1202 switch(lcfg->lcfg_command) {
1204 err = class_setup(obd, lcfg);
1208 err = class_detach(obd, lcfg);
1211 case LCFG_CLEANUP: {
1212 err = class_cleanup(obd, lcfg);
1215 case LCFG_ADD_CONN: {
1216 err = class_add_conn(obd, lcfg);
1219 case LCFG_DEL_CONN: {
1220 err = class_del_conn(obd, lcfg);
1223 case LCFG_POOL_NEW: {
1224 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1227 case LCFG_POOL_ADD: {
1228 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1229 lustre_cfg_string(lcfg, 3));
1232 case LCFG_POOL_REM: {
1233 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1234 lustre_cfg_string(lcfg, 3));
1237 case LCFG_POOL_DEL: {
1238 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1242 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1248 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1249 CWARN("Ignoring error %d on optional command %#x\n", err,
1250 lcfg->lcfg_command);
1255 EXPORT_SYMBOL(class_process_config);
1257 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1258 struct lustre_cfg *lcfg, void *data)
1260 struct lprocfs_vars *var;
1261 struct file fakefile;
1262 struct seq_file fake_seqfile;
1264 int i, keylen, vallen;
1265 int matched = 0, j = 0;
1270 if (lcfg->lcfg_command != LCFG_PARAM) {
1271 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1275 /* fake a seq file so that var->fops->write can work... */
1276 fakefile.private_data = &fake_seqfile;
1277 fake_seqfile.private = data;
1278 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1279 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1280 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1281 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1282 key = lustre_cfg_buf(lcfg, i);
1283 /* Strip off prefix */
1284 if (class_match_param(key, prefix, &key))
1285 /* If the prefix doesn't match, return error so we
1286 * can pass it down the stack */
1288 sval = strchr(key, '=');
1289 if (!sval || (*(sval + 1) == 0)) {
1290 CERROR("Can't parse param %s (missing '=')\n", key);
1291 /* rc = -EINVAL; continue parsing other params */
1294 keylen = sval - key;
1296 vallen = strlen(sval);
1299 /* Search proc entries */
1300 while (lvars[j].name) {
1302 if (class_match_param(key, var->name, NULL) == 0 &&
1303 keylen == strlen(var->name)) {
1307 if (var->fops && var->fops->write) {
1311 rc = (var->fops->write)(&fakefile, sval,
1320 CERROR("%.*s: %s unknown param %s\n",
1321 (int)strlen(prefix) - 1, prefix,
1322 (char *)lustre_cfg_string(lcfg, 0), key);
1323 /* rc = -EINVAL; continue parsing other params */
1325 } else if (rc < 0) {
1326 CERROR("%s: error writing proc entry '%s': rc = %d\n",
1327 prefix, var->name, rc);
1330 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1331 lustre_cfg_string(lcfg, 0),
1332 (int)strlen(prefix) - 1, prefix,
1333 (int)(sval - key - 1), key, sval);
1343 EXPORT_SYMBOL(class_process_proc_param);
1346 * Supplemental functions for config logs, it allocates lustre_cfg
1347 * buffers plus initialized llog record header at the beginning.
1349 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1351 struct llog_cfg_rec *lcr;
1356 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1357 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1358 sizeof(struct llog_rec_tail);
1360 OBD_ALLOC(lcr, reclen);
1364 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1366 lcr->lcr_hdr.lrh_len = reclen;
1367 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1371 EXPORT_SYMBOL(lustre_cfg_rec_new);
1373 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1376 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1379 EXPORT_SYMBOL(lustre_cfg_rec_free);
1381 /** Parse a configuration llog, doing various manipulations on them
1382 * for various reasons, (modifications for compatibility, skip obsolete
1383 * records, change uuids, etc), then class_process_config() resulting
1386 int class_config_llog_handler(const struct lu_env *env,
1387 struct llog_handle *handle,
1388 struct llog_rec_hdr *rec, void *data)
1390 struct config_llog_instance *clli = data;
1391 int cfg_len = rec->lrh_len;
1392 char *cfg_buf = (char*) (rec + 1);
1396 //class_config_dump_handler(handle, rec, data);
1398 switch (rec->lrh_type) {
1400 struct lustre_cfg *lcfg, *lcfg_new;
1401 struct lustre_cfg_bufs bufs;
1402 char *inst_name = NULL;
1404 int inst = 0, swab = 0;
1406 lcfg = (struct lustre_cfg *)cfg_buf;
1407 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1408 lustre_swab_lustre_cfg(lcfg);
1412 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1416 /* Figure out config state info */
1417 if (lcfg->lcfg_command == LCFG_MARKER) {
1418 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1419 lustre_swab_cfg_marker(marker, swab,
1420 LUSTRE_CFG_BUFLEN(lcfg, 1));
1421 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1422 clli->cfg_flags, marker->cm_flags);
1423 if (marker->cm_flags & CM_START) {
1424 /* all previous flags off */
1425 clli->cfg_flags = CFG_F_MARKER;
1426 server_name2index(marker->cm_tgtname,
1427 &clli->cfg_lwp_idx, NULL);
1428 if (marker->cm_flags & CM_SKIP) {
1429 clli->cfg_flags |= CFG_F_SKIP;
1430 CDEBUG(D_CONFIG, "SKIP #%d\n",
1432 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1434 lustre_check_exclusion(clli->cfg_sb,
1435 marker->cm_tgtname))) {
1436 clli->cfg_flags |= CFG_F_EXCLUDE;
1437 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1440 } else if (marker->cm_flags & CM_END) {
1441 clli->cfg_flags = 0;
1444 /* A config command without a start marker before it is
1445 illegal (post 146) */
1446 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1447 !(clli->cfg_flags & CFG_F_MARKER) &&
1448 (lcfg->lcfg_command != LCFG_MARKER)) {
1449 CWARN("Config not inside markers, ignoring! "
1450 "(inst: %p, uuid: %s, flags: %#x)\n",
1452 clli->cfg_uuid.uuid, clli->cfg_flags);
1453 clli->cfg_flags |= CFG_F_SKIP;
1455 if (clli->cfg_flags & CFG_F_SKIP) {
1456 CDEBUG(D_CONFIG, "skipping %#x\n",
1459 /* No processing! */
1464 * For interoperability between 1.8 and 2.0,
1465 * rename "mds" obd device type to "mdt".
1468 char *typename = lustre_cfg_string(lcfg, 1);
1469 char *index = lustre_cfg_string(lcfg, 2);
1471 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1472 strcmp(typename, "mds") == 0)) {
1473 CWARN("For 1.8 interoperability, rename obd "
1474 "type from mds to mdt\n");
1477 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1478 strcmp(index, "type") == 0)) {
1479 CDEBUG(D_INFO, "For 1.8 interoperability, "
1480 "set this index to '0'\n");
1486 #ifdef HAVE_SERVER_SUPPORT
1487 /* newer MDS replaces LOV/OSC with LOD/OSP */
1489 char *typename = lustre_cfg_string(lcfg, 1);
1491 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1492 strcmp(typename, LUSTRE_LOV_NAME) == 0) &&
1493 IS_MDT(s2lsi(clli->cfg_sb))) {
1495 "For 2.x interoperability, rename obd "
1496 "type from lov to lod (%s)\n",
1497 s2lsi(clli->cfg_sb)->lsi_svname);
1498 strcpy(typename, LUSTRE_LOD_NAME);
1500 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1501 strcmp(typename, LUSTRE_OSC_NAME) == 0) &&
1502 IS_MDT(s2lsi(clli->cfg_sb))) {
1504 "For 2.x interoperability, rename obd "
1505 "type from osc to osp (%s)\n",
1506 s2lsi(clli->cfg_sb)->lsi_svname);
1507 strcpy(typename, LUSTRE_OSP_NAME);
1510 #endif /* HAVE_SERVER_SUPPORT */
1512 if (clli->cfg_flags & CFG_F_EXCLUDE) {
1513 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1514 lcfg->lcfg_command);
1515 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1516 /* Add inactive instead */
1517 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1520 lustre_cfg_bufs_init(&bufs, lcfg);
1522 if (clli && clli->cfg_instance &&
1523 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1525 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1526 sizeof(clli->cfg_instance) * 2 + 4;
1527 OBD_ALLOC(inst_name, inst_len);
1528 if (inst_name == NULL)
1529 GOTO(out, rc = -ENOMEM);
1530 sprintf(inst_name, "%s-%p",
1531 lustre_cfg_string(lcfg, 0),
1532 clli->cfg_instance);
1533 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1534 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1535 lcfg->lcfg_command, inst_name);
1538 /* we override the llog's uuid for clients, to insure they
1540 if (clli && clli->cfg_instance != NULL &&
1541 lcfg->lcfg_command == LCFG_ATTACH) {
1542 lustre_cfg_bufs_set_string(&bufs, 2,
1543 clli->cfg_uuid.uuid);
1546 * sptlrpc config record, we expect 2 data segments:
1547 * [0]: fs_name/target_name,
1549 * moving them to index [1] and [2], and insert MGC's
1550 * obdname at index [0].
1552 if (clli && clli->cfg_instance == NULL &&
1553 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1554 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1555 bufs.lcfg_buflen[1]);
1556 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1557 bufs.lcfg_buflen[0]);
1558 lustre_cfg_bufs_set_string(&bufs, 0,
1562 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1563 if (lcfg_new == NULL)
1564 GOTO(out, rc = -ENOMEM);
1566 lcfg_new->lcfg_num = lcfg->lcfg_num;
1567 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1569 /* XXX Hack to try to remain binary compatible with
1570 * pre-newconfig logs */
1571 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1572 (lcfg->lcfg_nid >> 32) == 0) {
1573 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1575 lcfg_new->lcfg_nid =
1576 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1577 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1578 lcfg->lcfg_nal, addr,
1579 libcfs_nid2str(lcfg_new->lcfg_nid));
1581 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1584 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1586 rc = class_process_config(lcfg_new);
1587 lustre_cfg_free(lcfg_new);
1590 OBD_FREE(inst_name, inst_len);
1594 CERROR("Unknown llog record type %#x encountered\n",
1600 CERROR("%s: cfg command failed: rc = %d\n",
1601 handle->lgh_ctxt->loc_obd->obd_name, rc);
1602 class_config_dump_handler(NULL, handle, rec, data);
1606 EXPORT_SYMBOL(class_config_llog_handler);
1608 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1609 char *name, struct config_llog_instance *cfg)
1611 struct llog_process_cat_data cd = {0, 0};
1612 struct llog_handle *llh;
1617 CDEBUG(D_INFO, "looking up llog %s\n", name);
1618 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1622 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1624 GOTO(parse_out, rc);
1626 /* continue processing from where we last stopped to end-of-log */
1628 cd.lpcd_first_idx = cfg->cfg_last_idx;
1629 callback = cfg->cfg_callback;
1630 LASSERT(callback != NULL);
1632 callback = class_config_llog_handler;
1635 cd.lpcd_last_idx = 0;
1637 rc = llog_process(env, llh, callback, cfg, &cd);
1639 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1640 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1642 cfg->cfg_last_idx = cd.lpcd_last_idx;
1645 llog_close(env, llh);
1648 EXPORT_SYMBOL(class_config_parse_llog);
1650 static struct lcfg_type_data {
1654 } lcfg_data_table[] = {
1655 { LCFG_ATTACH, "attach", { "type", "UUID", "3", "4" } },
1656 { LCFG_DETACH, "detach", { "1", "2", "3", "4" } },
1657 { LCFG_SETUP, "setup", { "UUID", "node", "options", "failout" } },
1658 { LCFG_CLEANUP, "cleanup", { "1", "2", "3", "4" } },
1659 { LCFG_ADD_UUID, "add_uuid", { "node", "2", "3", "4" } },
1660 { LCFG_DEL_UUID, "del_uuid", { "1", "2", "3", "4" } },
1661 { LCFG_MOUNTOPT, "new_profile", { "name", "lov", "lmv", "4" } },
1662 { LCFG_DEL_MOUNTOPT, "del_mountopt", { "1", "2", "3", "4" } , },
1663 { LCFG_SET_TIMEOUT, "set_timeout", { "parameter", "2", "3", "4" } },
1664 { LCFG_SET_UPCALL, "set_upcall", { "1", "2", "3", "4" } },
1665 { LCFG_ADD_CONN, "add_conn", { "node", "2", "3", "4" } },
1666 { LCFG_DEL_CONN, "del_conn", { "1", "2", "3", "4" } },
1667 { LCFG_LOV_ADD_OBD, "add_osc", { "ost", "index", "gen", "UUID" } },
1668 { LCFG_LOV_DEL_OBD, "del_osc", { "1", "2", "3", "4" } },
1669 { LCFG_PARAM, "set_param", { "parameter", "value", "3", "4" } },
1670 { LCFG_MARKER, "marker", { "1", "2", "3", "4" } },
1671 { LCFG_LOG_START, "log_start", { "1", "2", "3", "4" } },
1672 { LCFG_LOG_END, "log_end", { "1", "2", "3", "4" } },
1673 { LCFG_LOV_ADD_INA, "add_osc_inactive", { "1", "2", "3", "4" } },
1674 { LCFG_ADD_MDC, "add_mdc", { "mdt", "index", "gen", "UUID" } },
1675 { LCFG_DEL_MDC, "del_mdc", { "1", "2", "3", "4" } },
1676 { LCFG_SPTLRPC_CONF, "security", { "parameter", "2", "3", "4" } },
1677 { LCFG_POOL_NEW, "new_pool", { "fsname", "pool", "3", "4" } },
1678 { LCFG_POOL_ADD, "add_pool", { "fsname", "pool", "ost", "4" } },
1679 { LCFG_POOL_REM, "remove_pool", { "fsname", "pool", "ost", "4" } },
1680 { LCFG_POOL_DEL, "del_pool", { "fsname", "pool", "3", "4" } },
1681 { LCFG_SET_LDLM_TIMEOUT, "set_ldlm_timeout",
1682 { "parameter", "2", "3", "4" } },
1683 { 0, NULL, { NULL, NULL, NULL, NULL } }
1686 static struct lcfg_type_data *lcfg_cmd2data(__u32 cmd)
1690 while (lcfg_data_table[i].ltd_type != 0) {
1691 if (lcfg_data_table[i].ltd_type == cmd)
1692 return &lcfg_data_table[i];
1699 * parse config record and output dump in supplied buffer.
1700 * This is separated from class_config_dump_handler() to use
1701 * for ioctl needs as well
1704 * - { event: attach, device: lustrewt-clilov, type: lov, UUID:
1705 * lustrewt-clilov_UUID }
1707 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size)
1709 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1711 char *end = buf + size;
1713 struct lcfg_type_data *ldata;
1715 LASSERT(rec->lrh_type == OBD_CFG_REC);
1716 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1720 ldata = lcfg_cmd2data(lcfg->lcfg_command);
1724 if (lcfg->lcfg_command == LCFG_MARKER)
1727 /* form YAML entity */
1728 ptr += snprintf(ptr, end - ptr, "- { event: %s", ldata->ltd_name);
1730 if (lcfg->lcfg_flags)
1731 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
1734 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
1736 if (lcfg->lcfg_nid) {
1737 char nidstr[LNET_NIDSTR_SIZE];
1739 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1740 ptr += snprintf(ptr, end - ptr, ", nid: %s("LPX64")",
1741 nidstr, lcfg->lcfg_nid);
1744 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0)
1745 ptr += snprintf(ptr, end - ptr, ", device: %s",
1746 lustre_cfg_string(lcfg, 0));
1748 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1749 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0)
1750 ptr += snprintf(ptr, end - ptr, ", %s: %s",
1751 ldata->ltd_bufs[i - 1],
1752 lustre_cfg_string(lcfg, i));
1755 ptr += snprintf(ptr, end - ptr, " }\n");
1756 /* return consumed bytes */
1762 * parse config record and output dump in supplied buffer.
1763 * This is separated from class_config_dump_handler() to use
1764 * for ioctl needs as well
1766 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
1768 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1770 char *end = buf + size;
1775 LASSERT(rec->lrh_type == OBD_CFG_REC);
1776 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1780 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
1781 if (lcfg->lcfg_flags)
1782 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1786 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
1788 if (lcfg->lcfg_nid) {
1789 char nidstr[LNET_NIDSTR_SIZE];
1791 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1792 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1793 nidstr, lcfg->lcfg_nid);
1796 if (lcfg->lcfg_command == LCFG_MARKER) {
1797 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1799 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1800 marker->cm_step, marker->cm_flags,
1801 marker->cm_tgtname, marker->cm_comment);
1805 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1806 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1807 lustre_cfg_string(lcfg, i));
1810 ptr += snprintf(ptr, end - ptr, "\n");
1811 /* return consumed bytes */
1816 int class_config_dump_handler(const struct lu_env *env,
1817 struct llog_handle *handle,
1818 struct llog_rec_hdr *rec, void *data)
1825 OBD_ALLOC(outstr, 256);
1829 if (rec->lrh_type == OBD_CFG_REC) {
1830 class_config_parse_rec(rec, outstr, 256);
1831 LCONSOLE(D_WARNING, " %s\n", outstr);
1833 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1837 OBD_FREE(outstr, 256);
1841 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1842 char *name, struct config_llog_instance *cfg)
1844 struct llog_handle *llh;
1849 LCONSOLE_INFO("Dumping config log %s\n", name);
1851 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1855 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1857 GOTO(parse_out, rc);
1859 rc = llog_process(env, llh, class_config_dump_handler, cfg, NULL);
1861 llog_close(env, llh);
1863 LCONSOLE_INFO("End config log %s\n", name);
1866 EXPORT_SYMBOL(class_config_dump_llog);
1868 /** Call class_cleanup and class_detach.
1869 * "Manual" only in the sense that we're faking lcfg commands.
1871 int class_manual_cleanup(struct obd_device *obd)
1874 struct lustre_cfg *lcfg;
1875 struct lustre_cfg_bufs bufs;
1880 CERROR("empty cleanup\n");
1889 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1890 obd->obd_name, flags);
1892 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1893 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1894 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1898 rc = class_process_config(lcfg);
1900 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1904 /* the lcfg is almost the same for both ops */
1905 lcfg->lcfg_command = LCFG_DETACH;
1906 rc = class_process_config(lcfg);
1908 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1910 lustre_cfg_free(lcfg);
1913 EXPORT_SYMBOL(class_manual_cleanup);
1916 * uuid<->export lustre hash operations
1920 uuid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
1922 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1923 sizeof(((struct obd_uuid *)key)->uuid), mask);
1927 uuid_key(struct hlist_node *hnode)
1929 struct obd_export *exp;
1931 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1933 return &exp->exp_client_uuid;
1937 * NOTE: It is impossible to find an export that is in failed
1938 * state with this function
1941 uuid_keycmp(const void *key, struct hlist_node *hnode)
1943 struct obd_export *exp;
1946 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1948 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1953 uuid_export_object(struct hlist_node *hnode)
1955 return hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1959 uuid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
1961 struct obd_export *exp;
1963 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1964 class_export_get(exp);
1968 uuid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
1970 struct obd_export *exp;
1972 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1973 class_export_put(exp);
1976 static struct cfs_hash_ops uuid_hash_ops = {
1977 .hs_hash = uuid_hash,
1979 .hs_keycmp = uuid_keycmp,
1980 .hs_object = uuid_export_object,
1981 .hs_get = uuid_export_get,
1982 .hs_put_locked = uuid_export_put_locked,
1987 * nid<->export hash operations
1991 nid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
1993 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1997 nid_key(struct hlist_node *hnode)
1999 struct obd_export *exp;
2001 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2003 RETURN(&exp->exp_connection->c_peer.nid);
2007 * NOTE: It is impossible to find an export that is in failed
2008 * state with this function
2011 nid_kepcmp(const void *key, struct hlist_node *hnode)
2013 struct obd_export *exp;
2016 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2018 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
2023 nid_export_object(struct hlist_node *hnode)
2025 return hlist_entry(hnode, struct obd_export, exp_nid_hash);
2029 nid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2031 struct obd_export *exp;
2033 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2034 class_export_get(exp);
2038 nid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2040 struct obd_export *exp;
2042 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2043 class_export_put(exp);
2046 static struct cfs_hash_ops nid_hash_ops = {
2047 .hs_hash = nid_hash,
2049 .hs_keycmp = nid_kepcmp,
2050 .hs_object = nid_export_object,
2051 .hs_get = nid_export_get,
2052 .hs_put_locked = nid_export_put_locked,
2057 * nid<->nidstats hash operations
2061 nidstats_key(struct hlist_node *hnode)
2063 struct nid_stat *ns;
2065 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2071 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2073 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
2077 nidstats_object(struct hlist_node *hnode)
2079 return hlist_entry(hnode, struct nid_stat, nid_hash);
2083 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2085 struct nid_stat *ns;
2087 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2092 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2094 struct nid_stat *ns;
2096 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2100 static struct cfs_hash_ops nid_stat_hash_ops = {
2101 .hs_hash = nid_hash,
2102 .hs_key = nidstats_key,
2103 .hs_keycmp = nidstats_keycmp,
2104 .hs_object = nidstats_object,
2105 .hs_get = nidstats_get,
2106 .hs_put_locked = nidstats_put_locked,