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, Whamcloud, Inc.
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>
48 #include <obd_class.h>
51 #include <lustre_param.h>
53 #include "llog_internal.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);
77 EXPORT_SYMBOL(class_find_param);
80 * Check whether the proc parameter \a param is an old parameter or not from
81 * the array \a ptr which contains the mapping from old parameters to new ones.
82 * If it's an old one, then return the pointer to the cfg_interop_param struc-
83 * ture which contains both the old and new parameters.
85 * \param param proc parameter
86 * \param ptr an array which contains the mapping from
87 * old parameters to new ones
89 * \retval valid-pointer pointer to the cfg_interop_param structure
90 * which contains the old and new parameters
91 * \retval NULL \a param or \a ptr is NULL,
92 * or \a param is not an old parameter
94 struct cfg_interop_param *class_find_old_param(const char *param,
95 struct cfg_interop_param *ptr)
100 if (param == NULL || ptr == NULL)
103 value = strchr(param, '=');
105 name_len = strlen(param);
107 name_len = value - param;
109 while (ptr->old_param != NULL) {
110 if (strncmp(param, ptr->old_param, name_len) == 0 &&
111 name_len == strlen(ptr->old_param))
118 EXPORT_SYMBOL(class_find_old_param);
121 * Finds a parameter in \a params and copies it to \a copy.
123 * Leading spaces are skipped. Next space or end of string is the
124 * parameter terminator with the exception that spaces inside single or double
125 * quotes get included into a parameter. The parameter is copied into \a copy
126 * which has to be allocated big enough by a caller, quotes are stripped in
127 * the copy and the copy is terminated by 0.
129 * On return \a params is set to next parameter or to NULL if last
130 * parameter is returned.
132 * \retval 0 if parameter is returned in \a copy
133 * \retval 1 otherwise
134 * \retval -EINVAL if unbalanced quota is found
136 int class_get_next_param(char **params, char *copy)
151 q1 = strpbrk(str, " '\"");
154 memcpy(copy, str, len);
161 memcpy(copy, str, len);
167 memcpy(copy, str, len);
170 /* search for the matching closing quote */
172 q2 = strchr(str, *q1);
174 CERROR("Unbalanced quota in parameters: \"%s\"\n",
179 memcpy(copy, str, len);
185 EXPORT_SYMBOL(class_get_next_param);
187 /* returns 0 if this is the first key in the buffer, else 1.
188 valp points to first char after key. */
189 int class_match_param(char *buf, char *key, char **valp)
194 if (memcmp(buf, key, strlen(key)) != 0)
198 *valp = buf + strlen(key);
202 EXPORT_SYMBOL(class_match_param);
204 static int parse_nid(char *buf, void *value)
206 lnet_nid_t *nid = (lnet_nid_t *)value;
208 *nid = libcfs_str2nid(buf);
209 if (*nid != LNET_NID_ANY)
212 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
216 static int parse_net(char *buf, void *value)
218 __u32 *net = (__u32 *)value;
220 *net = libcfs_str2net(buf);
221 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
233 endh is set to next separator */
234 static int class_parse_value(char *buf, int opc, void *value, char **endh)
242 while (*buf == ',' || *buf == ':')
244 if (*buf == ' ' || *buf == '/' || *buf == '\0')
247 /* nid separators or end of nids */
248 endp = strpbrk(buf, ",: /");
250 endp = buf + strlen(buf);
257 case CLASS_PARSE_NID:
258 rc = parse_nid(buf, value);
260 case CLASS_PARSE_NET:
261 rc = parse_net(buf, value);
272 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
274 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh);
276 EXPORT_SYMBOL(class_parse_nid);
278 int class_parse_net(char *buf, __u32 *net, char **endh)
280 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh);
282 EXPORT_SYMBOL(class_parse_net);
284 /* 1 param contains key and match
285 * 0 param contains key and not match
286 * -1 param does not contain key
288 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
293 while (class_find_param(buf, key, &buf) == 0) {
294 /* please restrict to the nids pertaining to
295 * the specified nids */
296 while (class_parse_nid(buf, &tmp, &buf) == 0) {
304 EXPORT_SYMBOL(class_match_nid);
306 int class_match_net(char *buf, char *key, __u32 net)
311 while (class_find_param(buf, key, &buf) == 0) {
312 /* please restrict to the nids pertaining to
313 * the specified networks */
314 while (class_parse_net(buf, &tmp, &buf) == 0) {
322 EXPORT_SYMBOL(class_match_net);
324 /********************** class fns **********************/
327 * Create a new obd device and set the type, name and uuid. If successful,
328 * the new device can be accessed by either name or uuid.
330 int class_attach(struct lustre_cfg *lcfg)
332 struct obd_device *obd = NULL;
333 char *typename, *name, *uuid;
337 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
338 CERROR("No type passed!\n");
341 typename = lustre_cfg_string(lcfg, 1);
343 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
344 CERROR("No name passed!\n");
347 name = lustre_cfg_string(lcfg, 0);
349 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
350 CERROR("No UUID passed!\n");
353 uuid = lustre_cfg_string(lcfg, 2);
355 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
356 MKSTR(typename), MKSTR(name), MKSTR(uuid));
358 obd = class_newdev(typename, name);
360 /* Already exists or out of obds */
363 CERROR("Cannot create device %s of type %s : %d\n",
367 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
369 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
370 "obd %p obd_magic %08X != %08X\n",
371 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
372 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
373 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
375 cfs_rwlock_init(&obd->obd_pool_lock);
376 obd->obd_pool_limit = 0;
377 obd->obd_pool_slv = 0;
379 CFS_INIT_LIST_HEAD(&obd->obd_exports);
380 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
381 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
382 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
383 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
384 cfs_spin_lock_init(&obd->obd_nid_lock);
385 cfs_spin_lock_init(&obd->obd_dev_lock);
386 cfs_mutex_init(&obd->obd_dev_mutex);
387 cfs_spin_lock_init(&obd->obd_osfs_lock);
388 /* obd->obd_osfs_age must be set to a value in the distant
389 * past to guarantee a fresh statfs is fetched on mount. */
390 obd->obd_osfs_age = cfs_time_shift_64(-1000);
392 /* XXX belongs in setup not attach */
393 cfs_init_rwsem(&obd->obd_observer_link_sem);
395 cfs_init_timer(&obd->obd_recovery_timer);
396 cfs_spin_lock_init(&obd->obd_recovery_task_lock);
397 cfs_waitq_init(&obd->obd_next_transno_waitq);
398 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
399 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
400 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
401 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
402 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
404 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
406 obd->obd_conn_inprogress = 0;
409 if (len >= sizeof(obd->obd_uuid)) {
410 CERROR("uuid must be < %d bytes long\n",
411 (int)sizeof(obd->obd_uuid));
412 GOTO(out, rc = -EINVAL);
414 memcpy(obd->obd_uuid.uuid, uuid, len);
417 if (OBP(obd, attach)) {
418 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
420 GOTO(out, rc = -EINVAL);
423 /* Detach drops this */
424 cfs_spin_lock(&obd->obd_dev_lock);
425 cfs_atomic_set(&obd->obd_refcount, 1);
426 cfs_spin_unlock(&obd->obd_dev_lock);
427 lu_ref_init(&obd->obd_reference);
428 lu_ref_add(&obd->obd_reference, "attach", obd);
430 obd->obd_attached = 1;
431 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
432 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
436 class_release_dev(obd);
440 EXPORT_SYMBOL(class_attach);
442 /** Create hashes, self-export, and call type-specific setup.
443 * Setup is effectively the "start this obd" call.
445 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
448 struct obd_export *exp;
451 LASSERT(obd != NULL);
452 LASSERTF(obd == class_num2obd(obd->obd_minor),
453 "obd %p != obd_devs[%d] %p\n",
454 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
455 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
456 "obd %p obd_magic %08x != %08x\n",
457 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
459 /* have we attached a type to this device? */
460 if (!obd->obd_attached) {
461 CERROR("Device %d not attached\n", obd->obd_minor);
465 if (obd->obd_set_up) {
466 CERROR("Device %d already setup (type %s)\n",
467 obd->obd_minor, obd->obd_type->typ_name);
471 /* is someone else setting us up right now? (attach inits spinlock) */
472 cfs_spin_lock(&obd->obd_dev_lock);
473 if (obd->obd_starting) {
474 cfs_spin_unlock(&obd->obd_dev_lock);
475 CERROR("Device %d setup in progress (type %s)\n",
476 obd->obd_minor, obd->obd_type->typ_name);
479 /* just leave this on forever. I can't use obd_set_up here because
480 other fns check that status, and we're not actually set up yet. */
481 obd->obd_starting = 1;
482 obd->obd_uuid_hash = NULL;
483 obd->obd_nid_hash = NULL;
484 obd->obd_nid_stats_hash = NULL;
485 cfs_spin_unlock(&obd->obd_dev_lock);
487 /* create an uuid-export lustre hash */
488 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
491 HASH_UUID_BKT_BITS, 0,
494 &uuid_hash_ops, CFS_HASH_DEFAULT);
495 if (!obd->obd_uuid_hash)
496 GOTO(err_hash, err = -ENOMEM);
498 /* create a nid-export lustre hash */
499 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
502 HASH_NID_BKT_BITS, 0,
505 &nid_hash_ops, CFS_HASH_DEFAULT);
506 if (!obd->obd_nid_hash)
507 GOTO(err_hash, err = -ENOMEM);
509 /* create a nid-stats lustre hash */
510 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
511 HASH_NID_STATS_CUR_BITS,
512 HASH_NID_STATS_MAX_BITS,
513 HASH_NID_STATS_BKT_BITS, 0,
516 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
517 if (!obd->obd_nid_stats_hash)
518 GOTO(err_hash, err = -ENOMEM);
520 exp = class_new_export(obd, &obd->obd_uuid);
522 GOTO(err_hash, err = PTR_ERR(exp));
524 obd->obd_self_export = exp;
525 cfs_list_del_init(&exp->exp_obd_chain_timed);
526 class_export_put(exp);
528 err = obd_setup(obd, lcfg);
534 cfs_spin_lock(&obd->obd_dev_lock);
535 /* cleanup drops this */
536 class_incref(obd, "setup", obd);
537 cfs_spin_unlock(&obd->obd_dev_lock);
539 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
540 obd->obd_name, obd->obd_uuid.uuid);
544 if (obd->obd_self_export) {
545 class_unlink_export(obd->obd_self_export);
546 obd->obd_self_export = NULL;
549 if (obd->obd_uuid_hash) {
550 cfs_hash_putref(obd->obd_uuid_hash);
551 obd->obd_uuid_hash = NULL;
553 if (obd->obd_nid_hash) {
554 cfs_hash_putref(obd->obd_nid_hash);
555 obd->obd_nid_hash = NULL;
557 if (obd->obd_nid_stats_hash) {
558 cfs_hash_putref(obd->obd_nid_stats_hash);
559 obd->obd_nid_stats_hash = NULL;
561 obd->obd_starting = 0;
562 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
565 EXPORT_SYMBOL(class_setup);
567 /** We have finished using this obd and are ready to destroy it.
568 * There can be no more references to this obd.
570 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
574 if (obd->obd_set_up) {
575 CERROR("OBD device %d still set up\n", obd->obd_minor);
579 cfs_spin_lock(&obd->obd_dev_lock);
580 if (!obd->obd_attached) {
581 cfs_spin_unlock(&obd->obd_dev_lock);
582 CERROR("OBD device %d not attached\n", obd->obd_minor);
585 obd->obd_attached = 0;
586 cfs_spin_unlock(&obd->obd_dev_lock);
588 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
589 obd->obd_name, obd->obd_uuid.uuid);
591 class_decref(obd, "attach", obd);
594 EXPORT_SYMBOL(class_detach);
596 /** Start shutting down the obd. There may be in-progess ops when
597 * this is called. We tell them to start shutting down with a call
598 * to class_disconnect_exports().
600 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
606 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
608 if (!obd->obd_set_up) {
609 CERROR("Device %d not setup\n", obd->obd_minor);
613 cfs_spin_lock(&obd->obd_dev_lock);
614 if (obd->obd_stopping) {
615 cfs_spin_unlock(&obd->obd_dev_lock);
616 CERROR("OBD %d already stopping\n", obd->obd_minor);
619 /* Leave this on forever */
620 obd->obd_stopping = 1;
622 /* wait for already-arrived-connections to finish. */
623 while (obd->obd_conn_inprogress > 0) {
624 cfs_spin_unlock(&obd->obd_dev_lock);
628 cfs_spin_lock(&obd->obd_dev_lock);
630 cfs_spin_unlock(&obd->obd_dev_lock);
632 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
633 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
639 LCONSOLE_WARN("Failing over %s\n",
642 obd->obd_no_transno = 1;
643 obd->obd_no_recov = 1;
644 if (OBP(obd, iocontrol)) {
645 obd_iocontrol(OBD_IOC_SYNC,
646 obd->obd_self_export,
651 CERROR("Unrecognised flag '%c'\n", *flag);
655 LASSERT(obd->obd_self_export);
657 /* The three references that should be remaining are the
658 * obd_self_export and the attach and setup references. */
659 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
660 /* refcounf - 3 might be the number of real exports
661 (excluding self export). But class_incref is called
662 by other things as well, so don't count on it. */
663 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
664 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
665 dump_exports(obd, 0);
666 class_disconnect_exports(obd);
669 /* Precleanup, we must make sure all exports get destroyed. */
670 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
672 CERROR("Precleanup %s returned %d\n",
675 /* destroy an uuid-export hash body */
676 if (obd->obd_uuid_hash) {
677 cfs_hash_putref(obd->obd_uuid_hash);
678 obd->obd_uuid_hash = NULL;
681 /* destroy a nid-export hash body */
682 if (obd->obd_nid_hash) {
683 cfs_hash_putref(obd->obd_nid_hash);
684 obd->obd_nid_hash = NULL;
687 /* destroy a nid-stats hash body */
688 if (obd->obd_nid_stats_hash) {
689 cfs_hash_putref(obd->obd_nid_stats_hash);
690 obd->obd_nid_stats_hash = NULL;
693 class_decref(obd, "setup", obd);
698 EXPORT_SYMBOL(class_cleanup);
700 struct obd_device *class_incref(struct obd_device *obd,
701 const char *scope, const void *source)
703 lu_ref_add_atomic(&obd->obd_reference, scope, source);
704 cfs_atomic_inc(&obd->obd_refcount);
705 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
706 cfs_atomic_read(&obd->obd_refcount));
710 EXPORT_SYMBOL(class_incref);
712 void class_decref(struct obd_device *obd, const char *scope, const void *source)
717 cfs_spin_lock(&obd->obd_dev_lock);
718 cfs_atomic_dec(&obd->obd_refcount);
719 refs = cfs_atomic_read(&obd->obd_refcount);
720 cfs_spin_unlock(&obd->obd_dev_lock);
721 lu_ref_del(&obd->obd_reference, scope, source);
723 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
725 if ((refs == 1) && obd->obd_stopping) {
726 /* All exports have been destroyed; there should
727 be no more in-progress ops by this point.*/
729 cfs_spin_lock(&obd->obd_self_export->exp_lock);
730 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
731 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
733 /* note that we'll recurse into class_decref again */
734 class_unlink_export(obd->obd_self_export);
739 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
740 obd->obd_name, obd->obd_uuid.uuid);
741 LASSERT(!obd->obd_attached);
742 if (obd->obd_stopping) {
743 /* If we're not stopping, we were never set up */
744 err = obd_cleanup(obd);
746 CERROR("Cleanup %s returned %d\n",
749 if (OBP(obd, detach)) {
750 err = OBP(obd, detach)(obd);
752 CERROR("Detach returned %d\n", err);
754 class_release_dev(obd);
757 EXPORT_SYMBOL(class_decref);
759 /** Add a failover nid location.
760 * Client obd types contact server obd types using this nid list.
762 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
764 struct obd_import *imp;
765 struct obd_uuid uuid;
769 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
770 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
771 CERROR("invalid conn_uuid\n");
774 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
775 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
776 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
777 CERROR("can't add connection on non-client dev\n");
781 imp = obd->u.cli.cl_import;
783 CERROR("try to add conn on immature client dev\n");
787 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
788 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
793 /** Remove a failover nid location.
795 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
797 struct obd_import *imp;
798 struct obd_uuid uuid;
802 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
803 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
804 CERROR("invalid conn_uuid\n");
807 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
808 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
809 CERROR("can't del connection on non-client dev\n");
813 imp = obd->u.cli.cl_import;
815 CERROR("try to del conn on immature client dev\n");
819 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
820 rc = obd_del_conn(imp, &uuid);
825 CFS_LIST_HEAD(lustre_profile_list);
827 struct lustre_profile *class_get_profile(const char * prof)
829 struct lustre_profile *lprof;
832 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
833 if (!strcmp(lprof->lp_profile, prof)) {
839 EXPORT_SYMBOL(class_get_profile);
841 /** Create a named "profile".
842 * This defines the mdc and osc names to use for a client.
843 * This also is used to define the lov to be used by a mdt.
845 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
846 int mdclen, char *mdc)
848 struct lustre_profile *lprof;
852 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
854 OBD_ALLOC(lprof, sizeof(*lprof));
857 CFS_INIT_LIST_HEAD(&lprof->lp_list);
859 LASSERT(proflen == (strlen(prof) + 1));
860 OBD_ALLOC(lprof->lp_profile, proflen);
861 if (lprof->lp_profile == NULL)
862 GOTO(out, err = -ENOMEM);
863 memcpy(lprof->lp_profile, prof, proflen);
865 LASSERT(osclen == (strlen(osc) + 1));
866 OBD_ALLOC(lprof->lp_dt, osclen);
867 if (lprof->lp_dt == NULL)
868 GOTO(out, err = -ENOMEM);
869 memcpy(lprof->lp_dt, osc, osclen);
872 LASSERT(mdclen == (strlen(mdc) + 1));
873 OBD_ALLOC(lprof->lp_md, mdclen);
874 if (lprof->lp_md == NULL)
875 GOTO(out, err = -ENOMEM);
876 memcpy(lprof->lp_md, mdc, mdclen);
879 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
884 OBD_FREE(lprof->lp_md, mdclen);
886 OBD_FREE(lprof->lp_dt, osclen);
887 if (lprof->lp_profile)
888 OBD_FREE(lprof->lp_profile, proflen);
889 OBD_FREE(lprof, sizeof(*lprof));
893 void class_del_profile(const char *prof)
895 struct lustre_profile *lprof;
898 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
900 lprof = class_get_profile(prof);
902 cfs_list_del(&lprof->lp_list);
903 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
904 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
906 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
907 OBD_FREE(lprof, sizeof *lprof);
911 EXPORT_SYMBOL(class_del_profile);
914 void class_del_profiles(void)
916 struct lustre_profile *lprof, *n;
919 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
920 cfs_list_del(&lprof->lp_list);
921 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
922 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
924 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
925 OBD_FREE(lprof, sizeof *lprof);
929 EXPORT_SYMBOL(class_del_profiles);
931 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
934 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
936 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
938 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
940 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
941 at_early_margin = val;
942 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
944 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
945 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
946 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
950 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
955 /* We can't call ll_process_config or lquota_process_config directly because
956 * it lives in a module that must be loaded after this one. */
957 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
958 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
960 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
962 client_process_config = cpc;
964 EXPORT_SYMBOL(lustre_register_client_process_config);
967 * Rename the proc parameter in \a cfg with a new name \a new_name.
969 * \param cfg config structure which contains the proc parameter
970 * \param new_name new name of the proc parameter
972 * \retval valid-pointer pointer to the newly-allocated config structure
973 * which contains the renamed proc parameter
974 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
975 * not contain a proc parameter
976 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
978 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
979 const char *new_name)
981 struct lustre_cfg_bufs *bufs = NULL;
982 struct lustre_cfg *new_cfg = NULL;
984 char *new_param = NULL;
990 if (cfg == NULL || new_name == NULL)
991 RETURN(ERR_PTR(-EINVAL));
993 param = lustre_cfg_string(cfg, 1);
995 RETURN(ERR_PTR(-EINVAL));
997 value = strchr(param, '=');
999 name_len = strlen(param);
1001 name_len = value - param;
1003 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1005 OBD_ALLOC(new_param, new_len);
1006 if (new_param == NULL)
1007 RETURN(ERR_PTR(-ENOMEM));
1009 strcpy(new_param, new_name);
1011 strcat(new_param, value);
1013 OBD_ALLOC_PTR(bufs);
1015 OBD_FREE(new_param, new_len);
1016 RETURN(ERR_PTR(-ENOMEM));
1019 lustre_cfg_bufs_reset(bufs, NULL);
1020 lustre_cfg_bufs_init(bufs, cfg);
1021 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1023 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
1025 OBD_FREE(new_param, new_len);
1027 if (new_cfg == NULL)
1028 RETURN(ERR_PTR(-ENOMEM));
1030 new_cfg->lcfg_num = cfg->lcfg_num;
1031 new_cfg->lcfg_flags = cfg->lcfg_flags;
1032 new_cfg->lcfg_nid = cfg->lcfg_nid;
1033 new_cfg->lcfg_nal = cfg->lcfg_nal;
1037 EXPORT_SYMBOL(lustre_cfg_rename);
1039 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1041 quota_process_config = qpc;
1043 EXPORT_SYMBOL(lustre_register_quota_process_config);
1045 /** Process configuration commands given in lustre_cfg form.
1046 * These may come from direct calls (e.g. class_manual_cleanup)
1047 * or processing the config llog, or ioctl from lctl.
1049 int class_process_config(struct lustre_cfg *lcfg)
1051 struct obd_device *obd;
1054 LASSERT(lcfg && !IS_ERR(lcfg));
1055 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1057 /* Commands that don't need a device */
1058 switch(lcfg->lcfg_command) {
1060 err = class_attach(lcfg);
1063 case LCFG_ADD_UUID: {
1064 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1065 " (%s)\n", lustre_cfg_string(lcfg, 1),
1066 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1068 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1071 case LCFG_DEL_UUID: {
1072 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1073 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1074 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1076 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1079 case LCFG_MOUNTOPT: {
1080 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1081 lustre_cfg_string(lcfg, 1),
1082 lustre_cfg_string(lcfg, 2),
1083 lustre_cfg_string(lcfg, 3));
1084 /* set these mount options somewhere, so ll_fill_super
1086 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1087 lustre_cfg_string(lcfg, 1),
1088 LUSTRE_CFG_BUFLEN(lcfg, 2),
1089 lustre_cfg_string(lcfg, 2),
1090 LUSTRE_CFG_BUFLEN(lcfg, 3),
1091 lustre_cfg_string(lcfg, 3));
1094 case LCFG_DEL_MOUNTOPT: {
1095 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1096 lustre_cfg_string(lcfg, 1));
1097 class_del_profile(lustre_cfg_string(lcfg, 1));
1100 case LCFG_SET_TIMEOUT: {
1101 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1102 obd_timeout, lcfg->lcfg_num);
1103 obd_timeout = max(lcfg->lcfg_num, 1U);
1104 obd_timeout_set = 1;
1107 case LCFG_SET_LDLM_TIMEOUT: {
1108 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1109 ldlm_timeout, lcfg->lcfg_num);
1110 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1111 if (ldlm_timeout >= obd_timeout)
1112 ldlm_timeout = max(obd_timeout / 3, 1U);
1113 ldlm_timeout_set = 1;
1116 case LCFG_SET_UPCALL: {
1117 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1118 /* COMPAT_146 Don't fail on old configs */
1122 struct cfg_marker *marker;
1123 marker = lustre_cfg_buf(lcfg, 1);
1124 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1125 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1130 /* llite has no obd */
1131 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1132 PARAM_LLITE, 0) == 0) &&
1133 client_process_config) {
1134 err = (*client_process_config)(lcfg);
1136 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1137 PARAM_SYS, &tmp) == 0)) {
1138 /* Global param settings */
1139 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
1140 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
1141 unknown globals would cause config to fail */
1143 CWARN("Ignoring unknown param %s\n", tmp);
1145 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1146 PARAM_QUOTA, &tmp) == 0) &&
1147 quota_process_config) {
1148 err = (*quota_process_config)(lcfg);
1156 /* Commands that require a device */
1157 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1159 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1160 CERROR("this lcfg command requires a device name\n");
1162 CERROR("no device for: %s\n",
1163 lustre_cfg_string(lcfg, 0));
1165 GOTO(out, err = -EINVAL);
1168 switch(lcfg->lcfg_command) {
1170 err = class_setup(obd, lcfg);
1174 err = class_detach(obd, lcfg);
1177 case LCFG_CLEANUP: {
1178 err = class_cleanup(obd, lcfg);
1181 case LCFG_ADD_CONN: {
1182 err = class_add_conn(obd, lcfg);
1185 case LCFG_DEL_CONN: {
1186 err = class_del_conn(obd, lcfg);
1189 case LCFG_POOL_NEW: {
1190 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1194 case LCFG_POOL_ADD: {
1195 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1196 lustre_cfg_string(lcfg, 3));
1200 case LCFG_POOL_REM: {
1201 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1202 lustre_cfg_string(lcfg, 3));
1206 case LCFG_POOL_DEL: {
1207 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1212 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1218 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1219 CWARN("Ignoring error %d on optional command %#x\n", err,
1220 lcfg->lcfg_command);
1225 EXPORT_SYMBOL(class_process_config);
1227 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1228 struct lustre_cfg *lcfg, void *data)
1231 struct lprocfs_vars *var;
1233 int i, keylen, vallen;
1234 int matched = 0, j = 0;
1239 if (lcfg->lcfg_command != LCFG_PARAM) {
1240 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1244 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1245 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1246 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1247 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1248 key = lustre_cfg_buf(lcfg, i);
1249 /* Strip off prefix */
1250 class_match_param(key, prefix, &key);
1251 sval = strchr(key, '=');
1252 if (!sval || (*(sval + 1) == 0)) {
1253 CERROR("Can't parse param %s (missing '=')\n", key);
1254 /* rc = -EINVAL; continue parsing other params */
1257 keylen = sval - key;
1259 vallen = strlen(sval);
1262 /* Search proc entries */
1263 while (lvars[j].name) {
1265 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1266 keylen == strlen(var->name)) {
1269 if (var->write_fptr) {
1273 rc = (var->write_fptr)(NULL, sval,
1282 /* If the prefix doesn't match, return error so we
1283 can pass it down the stack */
1284 if (strnchr(key, keylen, '.'))
1286 CERROR("%s: unknown param %s\n",
1287 (char *)lustre_cfg_string(lcfg, 0), key);
1288 /* rc = -EINVAL; continue parsing other params */
1290 } else if (rc < 0) {
1291 CERROR("writing proc entry %s err %d\n",
1295 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1296 lustre_cfg_string(lcfg, 0),
1297 (int)strlen(prefix) - 1, prefix,
1298 (int)(sval - key - 1), key, sval);
1308 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1309 /* Don't throw config error */
1313 EXPORT_SYMBOL(class_process_proc_param);
1316 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1318 #define lustre_check_exclusion(a,b) 0
1321 /** Parse a configuration llog, doing various manipulations on them
1322 * for various reasons, (modifications for compatibility, skip obsolete
1323 * records, change uuids, etc), then class_process_config() resulting
1326 static int class_config_llog_handler(const struct lu_env *env,
1327 struct llog_handle *handle,
1328 struct llog_rec_hdr *rec, void *data)
1330 struct config_llog_instance *clli = data;
1331 int cfg_len = rec->lrh_len;
1332 char *cfg_buf = (char*) (rec + 1);
1336 //class_config_dump_handler(handle, rec, data);
1338 switch (rec->lrh_type) {
1340 struct lustre_cfg *lcfg, *lcfg_new;
1341 struct lustre_cfg_bufs bufs;
1342 char *inst_name = NULL;
1344 int inst = 0, swab = 0;
1346 lcfg = (struct lustre_cfg *)cfg_buf;
1347 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1348 lustre_swab_lustre_cfg(lcfg);
1352 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1356 /* Figure out config state info */
1357 if (lcfg->lcfg_command == LCFG_MARKER) {
1358 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1359 lustre_swab_cfg_marker(marker, swab,
1360 LUSTRE_CFG_BUFLEN(lcfg, 1));
1361 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1362 clli->cfg_flags, marker->cm_flags);
1363 if (marker->cm_flags & CM_START) {
1364 /* all previous flags off */
1365 clli->cfg_flags = CFG_F_MARKER;
1366 if (marker->cm_flags & CM_SKIP) {
1367 clli->cfg_flags |= CFG_F_SKIP;
1368 CDEBUG(D_CONFIG, "SKIP #%d\n",
1370 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1372 lustre_check_exclusion(clli->cfg_sb,
1373 marker->cm_tgtname))) {
1374 clli->cfg_flags |= CFG_F_EXCLUDE;
1375 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1378 } else if (marker->cm_flags & CM_END) {
1379 clli->cfg_flags = 0;
1382 /* A config command without a start marker before it is
1383 illegal (post 146) */
1384 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1385 !(clli->cfg_flags & CFG_F_MARKER) &&
1386 (lcfg->lcfg_command != LCFG_MARKER)) {
1387 CWARN("Config not inside markers, ignoring! "
1388 "(inst: %p, uuid: %s, flags: %#x)\n",
1390 clli->cfg_uuid.uuid, clli->cfg_flags);
1391 clli->cfg_flags |= CFG_F_SKIP;
1393 if (clli->cfg_flags & CFG_F_SKIP) {
1394 CDEBUG(D_CONFIG, "skipping %#x\n",
1397 /* No processing! */
1402 * For interoperability between 1.8 and 2.0,
1403 * rename "mds" obd device type to "mdt".
1406 char *typename = lustre_cfg_string(lcfg, 1);
1407 char *index = lustre_cfg_string(lcfg, 2);
1409 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1410 strcmp(typename, "mds") == 0)) {
1411 CWARN("For 1.8 interoperability, rename obd "
1412 "type from mds to mdt\n");
1415 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1416 strcmp(index, "type") == 0)) {
1417 CDEBUG(D_INFO, "For 1.8 interoperability, "
1418 "set this index to '0'\n");
1424 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1425 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1426 /* Add inactive instead */
1427 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1429 lustre_cfg_bufs_init(&bufs, lcfg);
1431 if (clli && clli->cfg_instance &&
1432 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1434 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1435 sizeof(clli->cfg_instance) * 2 + 4;
1436 OBD_ALLOC(inst_name, inst_len);
1437 if (inst_name == NULL)
1438 GOTO(out, rc = -ENOMEM);
1439 sprintf(inst_name, "%s-%p",
1440 lustre_cfg_string(lcfg, 0),
1441 clli->cfg_instance);
1442 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1443 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1444 lcfg->lcfg_command, inst_name);
1447 /* we override the llog's uuid for clients, to insure they
1449 if (clli && clli->cfg_instance != NULL &&
1450 lcfg->lcfg_command == LCFG_ATTACH) {
1451 lustre_cfg_bufs_set_string(&bufs, 2,
1452 clli->cfg_uuid.uuid);
1455 * sptlrpc config record, we expect 2 data segments:
1456 * [0]: fs_name/target_name,
1458 * moving them to index [1] and [2], and insert MGC's
1459 * obdname at index [0].
1461 if (clli && clli->cfg_instance == NULL &&
1462 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1463 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1464 bufs.lcfg_buflen[1]);
1465 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1466 bufs.lcfg_buflen[0]);
1467 lustre_cfg_bufs_set_string(&bufs, 0,
1471 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1473 lcfg_new->lcfg_num = lcfg->lcfg_num;
1474 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1476 /* XXX Hack to try to remain binary compatible with
1477 * pre-newconfig logs */
1478 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1479 (lcfg->lcfg_nid >> 32) == 0) {
1480 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1482 lcfg_new->lcfg_nid =
1483 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1484 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1485 lcfg->lcfg_nal, addr,
1486 libcfs_nid2str(lcfg_new->lcfg_nid));
1488 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1491 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1493 rc = class_process_config(lcfg_new);
1494 lustre_cfg_free(lcfg_new);
1497 OBD_FREE(inst_name, inst_len);
1501 CERROR("Unknown llog record type %#x encountered\n",
1507 CERROR("Err %d on cfg command:\n", rc);
1508 class_config_dump_handler(NULL, handle, rec, data);
1513 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1514 struct config_llog_instance *cfg)
1516 struct llog_process_cat_data cd = {0, 0};
1517 struct llog_handle *llh;
1521 CDEBUG(D_INFO, "looking up llog %s\n", name);
1522 rc = llog_open(NULL, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1526 rc = llog_init_handle(NULL, llh, LLOG_F_IS_PLAIN, NULL);
1528 GOTO(parse_out, rc);
1530 /* continue processing from where we last stopped to end-of-log */
1532 cd.lpcd_first_idx = cfg->cfg_last_idx;
1533 cd.lpcd_last_idx = 0;
1535 rc = llog_process(NULL, llh, class_config_llog_handler, cfg, &cd);
1537 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1538 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1541 cfg->cfg_last_idx = cd.lpcd_last_idx;
1544 rc2 = llog_close(NULL, llh);
1550 EXPORT_SYMBOL(class_config_parse_llog);
1552 int class_config_dump_handler(const struct lu_env *env,
1553 struct llog_handle *handle,
1554 struct llog_rec_hdr *rec, void *data)
1556 int cfg_len = rec->lrh_len;
1557 char *cfg_buf = (char*) (rec + 1);
1558 char *outstr, *ptr, *end;
1562 OBD_ALLOC(outstr, 256);
1568 if (rec->lrh_type == OBD_CFG_REC) {
1569 struct lustre_cfg *lcfg;
1572 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1575 lcfg = (struct lustre_cfg *)cfg_buf;
1577 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1578 lcfg->lcfg_command);
1579 if (lcfg->lcfg_flags) {
1580 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1583 if (lcfg->lcfg_num) {
1584 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1587 if (lcfg->lcfg_nid) {
1588 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1589 libcfs_nid2str(lcfg->lcfg_nid),
1592 if (lcfg->lcfg_command == LCFG_MARKER) {
1593 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1594 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1595 marker->cm_step, marker->cm_flags,
1596 marker->cm_tgtname, marker->cm_comment);
1598 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1599 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1600 lustre_cfg_string(lcfg, i));
1603 LCONSOLE(D_WARNING, " %s\n", outstr);
1605 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1609 OBD_FREE(outstr, 256);
1613 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1614 struct config_llog_instance *cfg)
1616 struct llog_handle *llh;
1620 LCONSOLE_INFO("Dumping config log %s\n", name);
1622 rc = llog_open(NULL, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1626 rc = llog_init_handle(NULL, llh, LLOG_F_IS_PLAIN, NULL);
1628 GOTO(parse_out, rc);
1630 rc = llog_process(NULL, llh, class_config_dump_handler, cfg, NULL);
1632 rc2 = llog_close(NULL, llh);
1636 LCONSOLE_INFO("End config log %s\n", name);
1640 EXPORT_SYMBOL(class_config_dump_llog);
1642 /** Call class_cleanup and class_detach.
1643 * "Manual" only in the sense that we're faking lcfg commands.
1645 int class_manual_cleanup(struct obd_device *obd)
1648 struct lustre_cfg *lcfg;
1649 struct lustre_cfg_bufs bufs;
1654 CERROR("empty cleanup\n");
1663 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1664 obd->obd_name, flags);
1666 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1667 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1668 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1672 rc = class_process_config(lcfg);
1674 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1678 /* the lcfg is almost the same for both ops */
1679 lcfg->lcfg_command = LCFG_DETACH;
1680 rc = class_process_config(lcfg);
1682 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1684 lustre_cfg_free(lcfg);
1687 EXPORT_SYMBOL(class_manual_cleanup);
1690 * uuid<->export lustre hash operations
1694 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1696 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1697 sizeof(((struct obd_uuid *)key)->uuid), mask);
1701 uuid_key(cfs_hlist_node_t *hnode)
1703 struct obd_export *exp;
1705 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1707 return &exp->exp_client_uuid;
1711 * NOTE: It is impossible to find an export that is in failed
1712 * state with this function
1715 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1717 struct obd_export *exp;
1720 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1722 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1727 uuid_export_object(cfs_hlist_node_t *hnode)
1729 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1733 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1735 struct obd_export *exp;
1737 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1738 class_export_get(exp);
1742 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1744 struct obd_export *exp;
1746 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1747 class_export_put(exp);
1750 static cfs_hash_ops_t uuid_hash_ops = {
1751 .hs_hash = uuid_hash,
1753 .hs_keycmp = uuid_keycmp,
1754 .hs_object = uuid_export_object,
1755 .hs_get = uuid_export_get,
1756 .hs_put_locked = uuid_export_put_locked,
1761 * nid<->export hash operations
1765 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1767 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1771 nid_key(cfs_hlist_node_t *hnode)
1773 struct obd_export *exp;
1775 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1777 RETURN(&exp->exp_connection->c_peer.nid);
1781 * NOTE: It is impossible to find an export that is in failed
1782 * state with this function
1785 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1787 struct obd_export *exp;
1790 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1792 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1797 nid_export_object(cfs_hlist_node_t *hnode)
1799 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1803 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1805 struct obd_export *exp;
1807 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1808 class_export_get(exp);
1812 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1814 struct obd_export *exp;
1816 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1817 class_export_put(exp);
1820 static cfs_hash_ops_t nid_hash_ops = {
1821 .hs_hash = nid_hash,
1823 .hs_keycmp = nid_kepcmp,
1824 .hs_object = nid_export_object,
1825 .hs_get = nid_export_get,
1826 .hs_put_locked = nid_export_put_locked,
1831 * nid<->nidstats hash operations
1835 nidstats_key(cfs_hlist_node_t *hnode)
1837 struct nid_stat *ns;
1839 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1845 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1847 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1851 nidstats_object(cfs_hlist_node_t *hnode)
1853 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1857 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1859 struct nid_stat *ns;
1861 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1866 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1868 struct nid_stat *ns;
1870 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1874 static cfs_hash_ops_t nid_stat_hash_ops = {
1875 .hs_hash = nid_hash,
1876 .hs_key = nidstats_key,
1877 .hs_keycmp = nidstats_keycmp,
1878 .hs_object = nidstats_object,
1879 .hs_get = nidstats_get,
1880 .hs_put_locked = nidstats_put_locked,