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, 2012, 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_log.h>
45 #include <lprocfs_status.h>
46 #include <lustre_param.h>
48 #include "llog_internal.h"
50 static cfs_hash_ops_t uuid_hash_ops;
51 static cfs_hash_ops_t nid_hash_ops;
52 static cfs_hash_ops_t nid_stat_hash_ops;
54 /*********** string parsing utils *********/
56 /* returns 0 if we find this key in the buffer, else 1 */
57 int class_find_param(char *buf, char *key, char **valp)
64 if ((ptr = strstr(buf, key)) == NULL)
68 *valp = ptr + strlen(key);
72 EXPORT_SYMBOL(class_find_param);
75 * Check whether the proc parameter \a param is an old parameter or not from
76 * the array \a ptr which contains the mapping from old parameters to new ones.
77 * If it's an old one, then return the pointer to the cfg_interop_param struc-
78 * ture which contains both the old and new parameters.
80 * \param param proc parameter
81 * \param ptr an array which contains the mapping from
82 * old parameters to new ones
84 * \retval valid-pointer pointer to the cfg_interop_param structure
85 * which contains the old and new parameters
86 * \retval NULL \a param or \a ptr is NULL,
87 * or \a param is not an old parameter
89 struct cfg_interop_param *class_find_old_param(const char *param,
90 struct cfg_interop_param *ptr)
95 if (param == NULL || ptr == NULL)
98 value = strchr(param, '=');
100 name_len = strlen(param);
102 name_len = value - param;
104 while (ptr->old_param != NULL) {
105 if (strncmp(param, ptr->old_param, name_len) == 0 &&
106 name_len == strlen(ptr->old_param))
113 EXPORT_SYMBOL(class_find_old_param);
116 * Finds a parameter in \a params and copies it to \a copy.
118 * Leading spaces are skipped. Next space or end of string is the
119 * parameter terminator with the exception that spaces inside single or double
120 * quotes get included into a parameter. The parameter is copied into \a copy
121 * which has to be allocated big enough by a caller, quotes are stripped in
122 * the copy and the copy is terminated by 0.
124 * On return \a params is set to next parameter or to NULL if last
125 * parameter is returned.
127 * \retval 0 if parameter is returned in \a copy
128 * \retval 1 otherwise
129 * \retval -EINVAL if unbalanced quota is found
131 int class_get_next_param(char **params, char *copy)
146 q1 = strpbrk(str, " '\"");
149 memcpy(copy, str, len);
156 memcpy(copy, str, len);
162 memcpy(copy, str, len);
165 /* search for the matching closing quote */
167 q2 = strchr(str, *q1);
169 CERROR("Unbalanced quota in parameters: \"%s\"\n",
174 memcpy(copy, str, len);
180 EXPORT_SYMBOL(class_get_next_param);
182 /* returns 0 if this is the first key in the buffer, else 1.
183 valp points to first char after key. */
184 int class_match_param(char *buf, char *key, char **valp)
189 if (memcmp(buf, key, strlen(key)) != 0)
193 *valp = buf + strlen(key);
197 EXPORT_SYMBOL(class_match_param);
199 static int parse_nid(char *buf, void *value, int quiet)
201 lnet_nid_t *nid = (lnet_nid_t *)value;
203 *nid = libcfs_str2nid(buf);
204 if (*nid != LNET_NID_ANY)
208 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
212 static int parse_net(char *buf, void *value)
214 __u32 *net = (__u32 *)value;
216 *net = libcfs_str2net(buf);
217 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
229 endh is set to next separator */
230 static int class_parse_value(char *buf, int opc, void *value, char **endh,
239 while (*buf == ',' || *buf == ':')
241 if (*buf == ' ' || *buf == '/' || *buf == '\0')
244 /* nid separators or end of nids */
245 endp = strpbrk(buf, ",: /");
247 endp = buf + strlen(buf);
254 case CLASS_PARSE_NID:
255 rc = parse_nid(buf, value, quiet);
257 case CLASS_PARSE_NET:
258 rc = parse_net(buf, value);
269 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
271 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
273 EXPORT_SYMBOL(class_parse_nid);
275 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
277 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
279 EXPORT_SYMBOL(class_parse_nid_quiet);
281 int class_parse_net(char *buf, __u32 *net, char **endh)
283 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
285 EXPORT_SYMBOL(class_parse_net);
287 /* 1 param contains key and match
288 * 0 param contains key and not match
289 * -1 param does not contain key
291 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
296 while (class_find_param(buf, key, &buf) == 0) {
297 /* please restrict to the nids pertaining to
298 * the specified nids */
299 while (class_parse_nid(buf, &tmp, &buf) == 0) {
307 EXPORT_SYMBOL(class_match_nid);
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) {
325 EXPORT_SYMBOL(class_match_net);
327 /********************** class fns **********************/
330 * Create a new obd device and set the type, name and uuid. If successful,
331 * the new device can be accessed by either name or uuid.
333 int class_attach(struct lustre_cfg *lcfg)
335 struct obd_device *obd = NULL;
336 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);
406 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
408 obd->obd_conn_inprogress = 0;
411 if (len >= sizeof(obd->obd_uuid)) {
412 CERROR("uuid must be < %d bytes long\n",
413 (int)sizeof(obd->obd_uuid));
414 GOTO(out, rc = -EINVAL);
416 memcpy(obd->obd_uuid.uuid, uuid, len);
419 if (OBP(obd, attach)) {
420 rc = OBP(obd, attach)(obd, sizeof(*lcfg), lcfg);
422 GOTO(out, rc = -EINVAL);
425 /* Detach drops this */
426 spin_lock(&obd->obd_dev_lock);
427 atomic_set(&obd->obd_refcount, 1);
428 spin_unlock(&obd->obd_dev_lock);
429 lu_ref_init(&obd->obd_reference);
430 lu_ref_add(&obd->obd_reference, "attach", obd);
432 obd->obd_attached = 1;
433 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
434 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
438 class_release_dev(obd);
442 EXPORT_SYMBOL(class_attach);
444 /** Create hashes, self-export, and call type-specific setup.
445 * Setup is effectively the "start this obd" call.
447 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
450 struct obd_export *exp;
452 LASSERT(obd != NULL);
453 LASSERTF(obd == class_num2obd(obd->obd_minor),
454 "obd %p != obd_devs[%d] %p\n",
455 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
456 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
457 "obd %p obd_magic %08x != %08x\n",
458 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
460 /* have we attached a type to this device? */
461 if (!obd->obd_attached) {
462 CERROR("Device %d not attached\n", obd->obd_minor);
466 if (obd->obd_set_up) {
467 CERROR("Device %d already setup (type %s)\n",
468 obd->obd_minor, obd->obd_type->typ_name);
472 /* is someone else setting us up right now? (attach inits spinlock) */
473 spin_lock(&obd->obd_dev_lock);
474 if (obd->obd_starting) {
475 spin_unlock(&obd->obd_dev_lock);
476 CERROR("Device %d setup in progress (type %s)\n",
477 obd->obd_minor, obd->obd_type->typ_name);
480 /* just leave this on forever. I can't use obd_set_up here because
481 other fns check that status, and we're not actually set up yet. */
482 obd->obd_starting = 1;
483 obd->obd_uuid_hash = NULL;
484 obd->obd_nid_hash = NULL;
485 obd->obd_nid_stats_hash = NULL;
486 spin_unlock(&obd->obd_dev_lock);
488 /* create an uuid-export lustre hash */
489 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
492 HASH_UUID_BKT_BITS, 0,
495 &uuid_hash_ops, CFS_HASH_DEFAULT);
496 if (!obd->obd_uuid_hash)
497 GOTO(err_hash, err = -ENOMEM);
499 /* create a nid-export lustre hash */
500 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
503 HASH_NID_BKT_BITS, 0,
506 &nid_hash_ops, CFS_HASH_DEFAULT);
507 if (!obd->obd_nid_hash)
508 GOTO(err_hash, err = -ENOMEM);
510 /* create a nid-stats lustre hash */
511 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
512 HASH_NID_STATS_CUR_BITS,
513 HASH_NID_STATS_MAX_BITS,
514 HASH_NID_STATS_BKT_BITS, 0,
517 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
518 if (!obd->obd_nid_stats_hash)
519 GOTO(err_hash, err = -ENOMEM);
521 exp = class_new_export(obd, &obd->obd_uuid);
523 GOTO(err_hash, err = PTR_ERR(exp));
525 obd->obd_self_export = exp;
526 list_del_init(&exp->exp_obd_chain_timed);
527 class_export_put(exp);
529 err = obd_setup(obd, lcfg);
535 spin_lock(&obd->obd_dev_lock);
536 /* cleanup drops this */
537 class_incref(obd, "setup", obd);
538 spin_unlock(&obd->obd_dev_lock);
540 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
541 obd->obd_name, obd->obd_uuid.uuid);
545 if (obd->obd_self_export) {
546 class_unlink_export(obd->obd_self_export);
547 obd->obd_self_export = NULL;
550 if (obd->obd_uuid_hash) {
551 cfs_hash_putref(obd->obd_uuid_hash);
552 obd->obd_uuid_hash = NULL;
554 if (obd->obd_nid_hash) {
555 cfs_hash_putref(obd->obd_nid_hash);
556 obd->obd_nid_hash = NULL;
558 if (obd->obd_nid_stats_hash) {
559 cfs_hash_putref(obd->obd_nid_stats_hash);
560 obd->obd_nid_stats_hash = NULL;
562 obd->obd_starting = 0;
563 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
566 EXPORT_SYMBOL(class_setup);
568 /** We have finished using this obd and are ready to destroy it.
569 * There can be no more references to this obd.
571 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
573 if (obd->obd_set_up) {
574 CERROR("OBD device %d still set up\n", obd->obd_minor);
578 spin_lock(&obd->obd_dev_lock);
579 if (!obd->obd_attached) {
580 spin_unlock(&obd->obd_dev_lock);
581 CERROR("OBD device %d not attached\n", obd->obd_minor);
584 obd->obd_attached = 0;
585 spin_unlock(&obd->obd_dev_lock);
587 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
588 obd->obd_name, obd->obd_uuid.uuid);
590 class_decref(obd, "attach", obd);
593 EXPORT_SYMBOL(class_detach);
595 /** Start shutting down the obd. There may be in-progess ops when
596 * this is called. We tell them to start shutting down with a call
597 * to class_disconnect_exports().
599 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
604 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
606 if (!obd->obd_set_up) {
607 CERROR("Device %d not setup\n", obd->obd_minor);
611 spin_lock(&obd->obd_dev_lock);
612 if (obd->obd_stopping) {
613 spin_unlock(&obd->obd_dev_lock);
614 CERROR("OBD %d already stopping\n", obd->obd_minor);
617 /* Leave this on forever */
618 obd->obd_stopping = 1;
620 /* wait for already-arrived-connections to finish. */
621 while (obd->obd_conn_inprogress > 0) {
622 spin_unlock(&obd->obd_dev_lock);
626 spin_lock(&obd->obd_dev_lock);
628 spin_unlock(&obd->obd_dev_lock);
630 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
631 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
637 LCONSOLE_WARN("Failing over %s\n",
640 obd->obd_no_transno = 1;
641 obd->obd_no_recov = 1;
642 if (OBP(obd, iocontrol)) {
643 obd_iocontrol(OBD_IOC_SYNC,
644 obd->obd_self_export,
649 CERROR("Unrecognised flag '%c'\n", *flag);
653 LASSERT(obd->obd_self_export);
655 /* The three references that should be remaining are the
656 * obd_self_export and the attach and setup references. */
657 if (atomic_read(&obd->obd_refcount) > 3) {
658 /* refcounf - 3 might be the number of real exports
659 (excluding self export). But class_incref is called
660 by other things as well, so don't count on it. */
661 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
662 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
663 dump_exports(obd, 0);
664 class_disconnect_exports(obd);
667 /* Precleanup, we must make sure all exports get destroyed. */
668 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
670 CERROR("Precleanup %s returned %d\n",
673 /* destroy an uuid-export hash body */
674 if (obd->obd_uuid_hash) {
675 cfs_hash_putref(obd->obd_uuid_hash);
676 obd->obd_uuid_hash = NULL;
679 /* destroy a nid-export hash body */
680 if (obd->obd_nid_hash) {
681 cfs_hash_putref(obd->obd_nid_hash);
682 obd->obd_nid_hash = NULL;
685 /* destroy a nid-stats hash body */
686 if (obd->obd_nid_stats_hash) {
687 cfs_hash_putref(obd->obd_nid_stats_hash);
688 obd->obd_nid_stats_hash = NULL;
691 class_decref(obd, "setup", obd);
696 EXPORT_SYMBOL(class_cleanup);
698 struct obd_device *class_incref(struct obd_device *obd,
699 const char *scope, const void *source)
701 lu_ref_add_atomic(&obd->obd_reference, scope, source);
702 atomic_inc(&obd->obd_refcount);
703 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
704 atomic_read(&obd->obd_refcount));
708 EXPORT_SYMBOL(class_incref);
710 void class_decref(struct obd_device *obd, const char *scope, const void *source)
715 spin_lock(&obd->obd_dev_lock);
716 atomic_dec(&obd->obd_refcount);
717 refs = atomic_read(&obd->obd_refcount);
718 spin_unlock(&obd->obd_dev_lock);
719 lu_ref_del(&obd->obd_reference, scope, source);
721 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
723 if ((refs == 1) && obd->obd_stopping) {
724 /* All exports have been destroyed; there should
725 be no more in-progress ops by this point.*/
727 spin_lock(&obd->obd_self_export->exp_lock);
728 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
729 spin_unlock(&obd->obd_self_export->exp_lock);
731 /* note that we'll recurse into class_decref again */
732 class_unlink_export(obd->obd_self_export);
737 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
738 obd->obd_name, obd->obd_uuid.uuid);
739 LASSERT(!obd->obd_attached);
740 if (obd->obd_stopping) {
741 /* If we're not stopping, we were never set up */
742 err = obd_cleanup(obd);
744 CERROR("Cleanup %s returned %d\n",
747 if (OBP(obd, detach)) {
748 err = OBP(obd, detach)(obd);
750 CERROR("Detach returned %d\n", err);
752 class_release_dev(obd);
755 EXPORT_SYMBOL(class_decref);
757 /** Add a failover nid location.
758 * Client obd types contact server obd types using this nid list.
760 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
762 struct obd_import *imp;
763 struct obd_uuid uuid;
766 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
767 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
768 CERROR("invalid conn_uuid\n");
771 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
772 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
773 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
774 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
775 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
776 CERROR("can't add connection on non-client dev\n");
780 imp = obd->u.cli.cl_import;
782 CERROR("try to add conn on immature client dev\n");
786 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
787 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
791 EXPORT_SYMBOL(class_add_conn);
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;
801 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
802 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
803 CERROR("invalid conn_uuid\n");
806 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
807 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
808 CERROR("can't del connection on non-client dev\n");
812 imp = obd->u.cli.cl_import;
814 CERROR("try to del conn on immature client dev\n");
818 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
819 rc = obd_del_conn(imp, &uuid);
824 LIST_HEAD(lustre_profile_list);
826 struct lustre_profile *class_get_profile(const char * prof)
828 struct lustre_profile *lprof;
830 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
831 if (!strcmp(lprof->lp_profile, prof)) {
837 EXPORT_SYMBOL(class_get_profile);
839 /** Create a named "profile".
840 * This defines the mdc and osc names to use for a client.
841 * This also is used to define the lov to be used by a mdt.
843 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
844 int mdclen, char *mdc)
846 struct lustre_profile *lprof;
849 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
851 OBD_ALLOC(lprof, sizeof(*lprof));
854 INIT_LIST_HEAD(&lprof->lp_list);
856 LASSERT(proflen == (strlen(prof) + 1));
857 OBD_ALLOC(lprof->lp_profile, proflen);
858 if (lprof->lp_profile == NULL)
859 GOTO(out, err = -ENOMEM);
860 memcpy(lprof->lp_profile, prof, proflen);
862 LASSERT(osclen == (strlen(osc) + 1));
863 OBD_ALLOC(lprof->lp_dt, osclen);
864 if (lprof->lp_dt == NULL)
865 GOTO(out, err = -ENOMEM);
866 memcpy(lprof->lp_dt, osc, osclen);
869 LASSERT(mdclen == (strlen(mdc) + 1));
870 OBD_ALLOC(lprof->lp_md, mdclen);
871 if (lprof->lp_md == NULL)
872 GOTO(out, err = -ENOMEM);
873 memcpy(lprof->lp_md, mdc, mdclen);
876 list_add(&lprof->lp_list, &lustre_profile_list);
881 OBD_FREE(lprof->lp_md, mdclen);
883 OBD_FREE(lprof->lp_dt, osclen);
884 if (lprof->lp_profile)
885 OBD_FREE(lprof->lp_profile, proflen);
886 OBD_FREE(lprof, sizeof(*lprof));
890 void class_del_profile(const char *prof)
892 struct lustre_profile *lprof;
894 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
896 lprof = class_get_profile(prof);
898 list_del(&lprof->lp_list);
899 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
900 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
902 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
903 OBD_FREE(lprof, sizeof(*lprof));
906 EXPORT_SYMBOL(class_del_profile);
909 void class_del_profiles(void)
911 struct lustre_profile *lprof, *n;
913 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
914 list_del(&lprof->lp_list);
915 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
916 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
918 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
919 OBD_FREE(lprof, sizeof(*lprof));
922 EXPORT_SYMBOL(class_del_profiles);
924 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
926 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
928 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
930 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
932 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
933 at_early_margin = val;
934 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
936 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
937 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
938 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
942 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
947 /* We can't call ll_process_config or lquota_process_config directly because
948 * it lives in a module that must be loaded after this one. */
949 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
950 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
952 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
954 client_process_config = cpc;
956 EXPORT_SYMBOL(lustre_register_client_process_config);
959 * Rename the proc parameter in \a cfg with a new name \a new_name.
961 * \param cfg config structure which contains the proc parameter
962 * \param new_name new name of the proc parameter
964 * \retval valid-pointer pointer to the newly-allocated config structure
965 * which contains the renamed proc parameter
966 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
967 * not contain a proc parameter
968 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
970 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
971 const char *new_name)
973 struct lustre_cfg_bufs *bufs = NULL;
974 struct lustre_cfg *new_cfg = NULL;
976 char *new_param = NULL;
981 if (cfg == NULL || new_name == NULL)
982 return ERR_PTR(-EINVAL);
984 param = lustre_cfg_string(cfg, 1);
986 return ERR_PTR(-EINVAL);
988 value = strchr(param, '=');
990 name_len = strlen(param);
992 name_len = value - param;
994 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
996 OBD_ALLOC(new_param, new_len);
997 if (new_param == NULL)
998 return ERR_PTR(-ENOMEM);
1000 strcpy(new_param, new_name);
1002 strcat(new_param, value);
1004 OBD_ALLOC_PTR(bufs);
1006 OBD_FREE(new_param, new_len);
1007 return ERR_PTR(-ENOMEM);
1010 lustre_cfg_bufs_reset(bufs, NULL);
1011 lustre_cfg_bufs_init(bufs, cfg);
1012 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1014 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
1016 OBD_FREE(new_param, new_len);
1018 if (new_cfg == NULL)
1019 return ERR_PTR(-ENOMEM);
1021 new_cfg->lcfg_num = cfg->lcfg_num;
1022 new_cfg->lcfg_flags = cfg->lcfg_flags;
1023 new_cfg->lcfg_nid = cfg->lcfg_nid;
1024 new_cfg->lcfg_nal = cfg->lcfg_nal;
1028 EXPORT_SYMBOL(lustre_cfg_rename);
1030 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1032 quota_process_config = qpc;
1034 EXPORT_SYMBOL(lustre_register_quota_process_config);
1036 /** Process configuration commands given in lustre_cfg form.
1037 * These may come from direct calls (e.g. class_manual_cleanup)
1038 * or processing the config llog, or ioctl from lctl.
1040 int class_process_config(struct lustre_cfg *lcfg)
1042 struct obd_device *obd;
1045 LASSERT(lcfg && !IS_ERR(lcfg));
1046 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1048 /* Commands that don't need a device */
1049 switch(lcfg->lcfg_command) {
1051 err = class_attach(lcfg);
1054 case LCFG_ADD_UUID: {
1055 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1056 " (%s)\n", lustre_cfg_string(lcfg, 1),
1057 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1059 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1062 case LCFG_DEL_UUID: {
1063 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1064 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1065 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1067 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1070 case LCFG_MOUNTOPT: {
1071 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1072 lustre_cfg_string(lcfg, 1),
1073 lustre_cfg_string(lcfg, 2),
1074 lustre_cfg_string(lcfg, 3));
1075 /* set these mount options somewhere, so ll_fill_super
1077 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1078 lustre_cfg_string(lcfg, 1),
1079 LUSTRE_CFG_BUFLEN(lcfg, 2),
1080 lustre_cfg_string(lcfg, 2),
1081 LUSTRE_CFG_BUFLEN(lcfg, 3),
1082 lustre_cfg_string(lcfg, 3));
1085 case LCFG_DEL_MOUNTOPT: {
1086 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1087 lustre_cfg_string(lcfg, 1));
1088 class_del_profile(lustre_cfg_string(lcfg, 1));
1091 case LCFG_SET_TIMEOUT: {
1092 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1093 obd_timeout, lcfg->lcfg_num);
1094 obd_timeout = max(lcfg->lcfg_num, 1U);
1095 obd_timeout_set = 1;
1098 case LCFG_SET_LDLM_TIMEOUT: {
1099 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1100 ldlm_timeout, lcfg->lcfg_num);
1101 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1102 if (ldlm_timeout >= obd_timeout)
1103 ldlm_timeout = max(obd_timeout / 3, 1U);
1104 ldlm_timeout_set = 1;
1107 case LCFG_SET_UPCALL: {
1108 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1109 /* COMPAT_146 Don't fail on old configs */
1113 struct cfg_marker *marker;
1114 marker = lustre_cfg_buf(lcfg, 1);
1115 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1116 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1121 /* llite has no obd */
1122 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1123 PARAM_LLITE, 0) == 0) &&
1124 client_process_config) {
1125 err = (*client_process_config)(lcfg);
1127 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1128 PARAM_SYS, &tmp) == 0)) {
1129 /* Global param settings */
1130 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
1132 * Client or server should not fail to mount if
1133 * it hits an unknown configuration parameter.
1136 CWARN("Ignoring unknown param %s\n", tmp);
1139 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1140 PARAM_QUOTA, &tmp) == 0) &&
1141 quota_process_config) {
1142 err = (*quota_process_config)(lcfg);
1150 /* Commands that require a device */
1151 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1153 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1154 CERROR("this lcfg command requires a device name\n");
1156 CERROR("no device for: %s\n",
1157 lustre_cfg_string(lcfg, 0));
1159 GOTO(out, err = -EINVAL);
1162 switch(lcfg->lcfg_command) {
1164 err = class_setup(obd, lcfg);
1168 err = class_detach(obd, lcfg);
1171 case LCFG_CLEANUP: {
1172 err = class_cleanup(obd, lcfg);
1175 case LCFG_ADD_CONN: {
1176 err = class_add_conn(obd, lcfg);
1179 case LCFG_DEL_CONN: {
1180 err = class_del_conn(obd, lcfg);
1183 case LCFG_POOL_NEW: {
1184 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1188 case LCFG_POOL_ADD: {
1189 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1190 lustre_cfg_string(lcfg, 3));
1194 case LCFG_POOL_REM: {
1195 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1196 lustre_cfg_string(lcfg, 3));
1200 case LCFG_POOL_DEL: {
1201 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1206 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1212 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1213 CWARN("Ignoring error %d on optional command %#x\n", err,
1214 lcfg->lcfg_command);
1219 EXPORT_SYMBOL(class_process_config);
1221 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1222 struct lustre_cfg *lcfg, void *data)
1224 struct lprocfs_vars *var;
1225 struct file fakefile;
1226 struct seq_file fake_seqfile;
1228 int i, keylen, vallen;
1229 int matched = 0, j = 0;
1233 if (lcfg->lcfg_command != LCFG_PARAM) {
1234 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1238 /* fake a seq file so that var->fops->write can work... */
1239 fakefile.private_data = &fake_seqfile;
1240 fake_seqfile.private = data;
1241 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1242 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1243 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1244 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1245 key = lustre_cfg_buf(lcfg, i);
1246 /* Strip off prefix */
1247 class_match_param(key, prefix, &key);
1248 sval = strchr(key, '=');
1249 if (!sval || (*(sval + 1) == 0)) {
1250 CERROR("Can't parse param %s (missing '=')\n", key);
1251 /* rc = -EINVAL; continue parsing other params */
1254 keylen = sval - key;
1256 vallen = strlen(sval);
1259 /* Search proc entries */
1260 while (lvars[j].name) {
1262 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1263 keylen == strlen(var->name)) {
1266 if (var->fops && var->fops->write) {
1270 rc = (var->fops->write)(&fakefile, sval,
1279 /* If the prefix doesn't match, return error so we
1280 can pass it down the stack */
1281 if (strnchr(key, keylen, '.'))
1283 CERROR("%s: unknown param %s\n",
1284 (char *)lustre_cfg_string(lcfg, 0), key);
1285 /* rc = -EINVAL; continue parsing other params */
1287 } else if (rc < 0) {
1288 CERROR("writing proc entry %s err %d\n",
1292 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1293 lustre_cfg_string(lcfg, 0),
1294 (int)strlen(prefix) - 1, prefix,
1295 (int)(sval - key - 1), key, sval);
1305 EXPORT_SYMBOL(class_process_proc_param);
1307 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1309 /** Parse a configuration llog, doing various manipulations on them
1310 * for various reasons, (modifications for compatibility, skip obsolete
1311 * records, change uuids, etc), then class_process_config() resulting
1314 int class_config_llog_handler(const struct lu_env *env,
1315 struct llog_handle *handle,
1316 struct llog_rec_hdr *rec, void *data)
1318 struct config_llog_instance *clli = data;
1319 int cfg_len = rec->lrh_len;
1320 char *cfg_buf = (char*) (rec + 1);
1323 //class_config_dump_handler(handle, rec, data);
1325 switch (rec->lrh_type) {
1327 struct lustre_cfg *lcfg, *lcfg_new;
1328 struct lustre_cfg_bufs bufs;
1329 char *inst_name = NULL;
1331 int inst = 0, swab = 0;
1333 lcfg = (struct lustre_cfg *)cfg_buf;
1334 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1335 lustre_swab_lustre_cfg(lcfg);
1339 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1343 /* Figure out config state info */
1344 if (lcfg->lcfg_command == LCFG_MARKER) {
1345 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1346 lustre_swab_cfg_marker(marker, swab,
1347 LUSTRE_CFG_BUFLEN(lcfg, 1));
1348 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1349 clli->cfg_flags, marker->cm_flags);
1350 if (marker->cm_flags & CM_START) {
1351 /* all previous flags off */
1352 clli->cfg_flags = CFG_F_MARKER;
1353 if (marker->cm_flags & CM_SKIP) {
1354 clli->cfg_flags |= CFG_F_SKIP;
1355 CDEBUG(D_CONFIG, "SKIP #%d\n",
1357 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1359 lustre_check_exclusion(clli->cfg_sb,
1360 marker->cm_tgtname))) {
1361 clli->cfg_flags |= CFG_F_EXCLUDE;
1362 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1365 } else if (marker->cm_flags & CM_END) {
1366 clli->cfg_flags = 0;
1369 /* A config command without a start marker before it is
1370 illegal (post 146) */
1371 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1372 !(clli->cfg_flags & CFG_F_MARKER) &&
1373 (lcfg->lcfg_command != LCFG_MARKER)) {
1374 CWARN("Config not inside markers, ignoring! "
1375 "(inst: %p, uuid: %s, flags: %#x)\n",
1377 clli->cfg_uuid.uuid, clli->cfg_flags);
1378 clli->cfg_flags |= CFG_F_SKIP;
1380 if (clli->cfg_flags & CFG_F_SKIP) {
1381 CDEBUG(D_CONFIG, "skipping %#x\n",
1384 /* No processing! */
1389 * For interoperability between 1.8 and 2.0,
1390 * rename "mds" obd device type to "mdt".
1393 char *typename = lustre_cfg_string(lcfg, 1);
1394 char *index = lustre_cfg_string(lcfg, 2);
1396 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1397 strcmp(typename, "mds") == 0)) {
1398 CWARN("For 1.8 interoperability, rename obd "
1399 "type from mds to mdt\n");
1402 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1403 strcmp(index, "type") == 0)) {
1404 CDEBUG(D_INFO, "For 1.8 interoperability, "
1405 "set this index to '0'\n");
1412 if (clli->cfg_flags & CFG_F_EXCLUDE) {
1413 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1414 lcfg->lcfg_command);
1415 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1416 /* Add inactive instead */
1417 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1420 lustre_cfg_bufs_init(&bufs, lcfg);
1422 if (clli && clli->cfg_instance &&
1423 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1425 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1426 sizeof(clli->cfg_instance) * 2 + 4;
1427 OBD_ALLOC(inst_name, inst_len);
1428 if (inst_name == NULL)
1429 GOTO(out, rc = -ENOMEM);
1430 sprintf(inst_name, "%s-%p",
1431 lustre_cfg_string(lcfg, 0),
1432 clli->cfg_instance);
1433 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1434 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1435 lcfg->lcfg_command, inst_name);
1438 /* we override the llog's uuid for clients, to insure they
1440 if (clli && clli->cfg_instance != NULL &&
1441 lcfg->lcfg_command == LCFG_ATTACH) {
1442 lustre_cfg_bufs_set_string(&bufs, 2,
1443 clli->cfg_uuid.uuid);
1446 * sptlrpc config record, we expect 2 data segments:
1447 * [0]: fs_name/target_name,
1449 * moving them to index [1] and [2], and insert MGC's
1450 * obdname at index [0].
1452 if (clli && clli->cfg_instance == NULL &&
1453 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1454 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1455 bufs.lcfg_buflen[1]);
1456 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1457 bufs.lcfg_buflen[0]);
1458 lustre_cfg_bufs_set_string(&bufs, 0,
1462 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1464 lcfg_new->lcfg_num = lcfg->lcfg_num;
1465 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1467 /* XXX Hack to try to remain binary compatible with
1468 * pre-newconfig logs */
1469 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1470 (lcfg->lcfg_nid >> 32) == 0) {
1471 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1473 lcfg_new->lcfg_nid =
1474 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1475 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1476 lcfg->lcfg_nal, addr,
1477 libcfs_nid2str(lcfg_new->lcfg_nid));
1479 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1482 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1484 rc = class_process_config(lcfg_new);
1485 lustre_cfg_free(lcfg_new);
1488 OBD_FREE(inst_name, inst_len);
1492 CERROR("Unknown llog record type %#x encountered\n",
1498 CERROR("%s: cfg command failed: rc = %d\n",
1499 handle->lgh_ctxt->loc_obd->obd_name, rc);
1500 class_config_dump_handler(NULL, handle, rec, data);
1504 EXPORT_SYMBOL(class_config_llog_handler);
1506 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1507 char *name, struct config_llog_instance *cfg)
1509 struct llog_process_cat_data cd = {0, 0};
1510 struct llog_handle *llh;
1514 CDEBUG(D_INFO, "looking up llog %s\n", name);
1515 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1519 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1521 GOTO(parse_out, rc);
1523 /* continue processing from where we last stopped to end-of-log */
1525 cd.lpcd_first_idx = cfg->cfg_last_idx;
1526 callback = cfg->cfg_callback;
1527 LASSERT(callback != NULL);
1529 callback = class_config_llog_handler;
1532 cd.lpcd_last_idx = 0;
1534 rc = llog_process(env, llh, callback, cfg, &cd);
1536 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1537 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1539 cfg->cfg_last_idx = cd.lpcd_last_idx;
1542 llog_close(env, llh);
1545 EXPORT_SYMBOL(class_config_parse_llog);
1548 * parse config record and output dump in supplied buffer.
1549 * This is separated from class_config_dump_handler() to use
1550 * for ioctl needs as well
1552 int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
1554 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1556 char *end = buf + size;
1559 LASSERT(rec->lrh_type == OBD_CFG_REC);
1560 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1564 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
1565 if (lcfg->lcfg_flags)
1566 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1570 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
1573 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1574 libcfs_nid2str(lcfg->lcfg_nid),
1577 if (lcfg->lcfg_command == LCFG_MARKER) {
1578 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1580 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1581 marker->cm_step, marker->cm_flags,
1582 marker->cm_tgtname, marker->cm_comment);
1586 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1587 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1588 lustre_cfg_string(lcfg, i));
1591 /* return consumed bytes */
1596 int class_config_dump_handler(const struct lu_env *env,
1597 struct llog_handle *handle,
1598 struct llog_rec_hdr *rec, void *data)
1603 OBD_ALLOC(outstr, 256);
1607 if (rec->lrh_type == OBD_CFG_REC) {
1608 class_config_parse_rec(rec, outstr, 256);
1609 LCONSOLE(D_WARNING, " %s\n", outstr);
1611 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1615 OBD_FREE(outstr, 256);
1619 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1620 char *name, struct config_llog_instance *cfg)
1622 struct llog_handle *llh;
1625 LCONSOLE_INFO("Dumping config log %s\n", name);
1627 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1631 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1633 GOTO(parse_out, rc);
1635 rc = llog_process(env, llh, class_config_dump_handler, cfg, NULL);
1637 llog_close(env, llh);
1639 LCONSOLE_INFO("End config log %s\n", name);
1642 EXPORT_SYMBOL(class_config_dump_llog);
1644 /** Call class_cleanup and class_detach.
1645 * "Manual" only in the sense that we're faking lcfg commands.
1647 int class_manual_cleanup(struct obd_device *obd)
1650 struct lustre_cfg *lcfg;
1651 struct lustre_cfg_bufs bufs;
1655 CERROR("empty cleanup\n");
1664 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1665 obd->obd_name, flags);
1667 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1668 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1669 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1673 rc = class_process_config(lcfg);
1675 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1679 /* the lcfg is almost the same for both ops */
1680 lcfg->lcfg_command = LCFG_DETACH;
1681 rc = class_process_config(lcfg);
1683 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1685 lustre_cfg_free(lcfg);
1688 EXPORT_SYMBOL(class_manual_cleanup);
1691 * uuid<->export lustre hash operations
1695 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1697 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1698 sizeof(((struct obd_uuid *)key)->uuid), mask);
1702 uuid_key(struct hlist_node *hnode)
1704 struct obd_export *exp;
1706 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1708 return &exp->exp_client_uuid;
1712 * NOTE: It is impossible to find an export that is in failed
1713 * state with this function
1716 uuid_keycmp(const void *key, struct hlist_node *hnode)
1718 struct obd_export *exp;
1721 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1723 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1728 uuid_export_object(struct hlist_node *hnode)
1730 return hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1734 uuid_export_get(cfs_hash_t *hs, struct hlist_node *hnode)
1736 struct obd_export *exp;
1738 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1739 class_export_get(exp);
1743 uuid_export_put_locked(cfs_hash_t *hs, struct hlist_node *hnode)
1745 struct obd_export *exp;
1747 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1748 class_export_put(exp);
1751 static cfs_hash_ops_t uuid_hash_ops = {
1752 .hs_hash = uuid_hash,
1754 .hs_keycmp = uuid_keycmp,
1755 .hs_object = uuid_export_object,
1756 .hs_get = uuid_export_get,
1757 .hs_put_locked = uuid_export_put_locked,
1762 * nid<->export hash operations
1766 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1768 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1772 nid_key(struct hlist_node *hnode)
1774 struct obd_export *exp;
1776 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1778 return &exp->exp_connection->c_peer.nid;
1782 * NOTE: It is impossible to find an export that is in failed
1783 * state with this function
1786 nid_kepcmp(const void *key, struct hlist_node *hnode)
1788 struct obd_export *exp;
1791 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1793 return exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1798 nid_export_object(struct hlist_node *hnode)
1800 return hlist_entry(hnode, struct obd_export, exp_nid_hash);
1804 nid_export_get(cfs_hash_t *hs, struct hlist_node *hnode)
1806 struct obd_export *exp;
1808 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1809 class_export_get(exp);
1813 nid_export_put_locked(cfs_hash_t *hs, struct hlist_node *hnode)
1815 struct obd_export *exp;
1817 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1818 class_export_put(exp);
1821 static cfs_hash_ops_t nid_hash_ops = {
1822 .hs_hash = nid_hash,
1824 .hs_keycmp = nid_kepcmp,
1825 .hs_object = nid_export_object,
1826 .hs_get = nid_export_get,
1827 .hs_put_locked = nid_export_put_locked,
1832 * nid<->nidstats hash operations
1836 nidstats_key(struct hlist_node *hnode)
1838 struct nid_stat *ns;
1840 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1846 nidstats_keycmp(const void *key, struct hlist_node *hnode)
1848 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1852 nidstats_object(struct hlist_node *hnode)
1854 return hlist_entry(hnode, struct nid_stat, nid_hash);
1858 nidstats_get(cfs_hash_t *hs, struct hlist_node *hnode)
1860 struct nid_stat *ns;
1862 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1867 nidstats_put_locked(cfs_hash_t *hs, struct hlist_node *hnode)
1869 struct nid_stat *ns;
1871 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1875 static cfs_hash_ops_t nid_stat_hash_ops = {
1876 .hs_hash = nid_hash,
1877 .hs_key = nidstats_key,
1878 .hs_keycmp = nidstats_keycmp,
1879 .hs_object = nidstats_object,
1880 .hs_get = nidstats_get,
1881 .hs_put_locked = nidstats_put_locked,