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_log.h>
52 #include <lprocfs_status.h>
53 #include <lustre_param.h>
55 #include "llog_internal.h"
57 static cfs_hash_ops_t uuid_hash_ops;
58 static cfs_hash_ops_t nid_hash_ops;
59 static cfs_hash_ops_t nid_stat_hash_ops;
61 /*********** string parsing utils *********/
63 /* returns 0 if we find this key in the buffer, else 1 */
64 int class_find_param(char *buf, char *key, char **valp)
71 if ((ptr = strstr(buf, key)) == NULL)
75 *valp = ptr + strlen(key);
79 EXPORT_SYMBOL(class_find_param);
82 * Check whether the proc parameter \a param is an old parameter or not from
83 * the array \a ptr which contains the mapping from old parameters to new ones.
84 * If it's an old one, then return the pointer to the cfg_interop_param struc-
85 * ture which contains both the old and new parameters.
87 * \param param proc parameter
88 * \param ptr an array which contains the mapping from
89 * old parameters to new ones
91 * \retval valid-pointer pointer to the cfg_interop_param structure
92 * which contains the old and new parameters
93 * \retval NULL \a param or \a ptr is NULL,
94 * or \a param is not an old parameter
96 struct cfg_interop_param *class_find_old_param(const char *param,
97 struct cfg_interop_param *ptr)
102 if (param == NULL || ptr == NULL)
105 value = strchr(param, '=');
107 name_len = strlen(param);
109 name_len = value - param;
111 while (ptr->old_param != NULL) {
112 if (strncmp(param, ptr->old_param, name_len) == 0 &&
113 name_len == strlen(ptr->old_param))
120 EXPORT_SYMBOL(class_find_old_param);
123 * Finds a parameter in \a params and copies it to \a copy.
125 * Leading spaces are skipped. Next space or end of string is the
126 * parameter terminator with the exception that spaces inside single or double
127 * quotes get included into a parameter. The parameter is copied into \a copy
128 * which has to be allocated big enough by a caller, quotes are stripped in
129 * the copy and the copy is terminated by 0.
131 * On return \a params is set to next parameter or to NULL if last
132 * parameter is returned.
134 * \retval 0 if parameter is returned in \a copy
135 * \retval 1 otherwise
136 * \retval -EINVAL if unbalanced quota is found
138 int class_get_next_param(char **params, char *copy)
153 q1 = strpbrk(str, " '\"");
156 memcpy(copy, str, len);
163 memcpy(copy, str, len);
169 memcpy(copy, str, len);
172 /* search for the matching closing quote */
174 q2 = strchr(str, *q1);
176 CERROR("Unbalanced quota in parameters: \"%s\"\n",
181 memcpy(copy, str, len);
187 EXPORT_SYMBOL(class_get_next_param);
189 /* returns 0 if this is the first key in the buffer, else 1.
190 valp points to first char after key. */
191 int class_match_param(char *buf, char *key, char **valp)
196 if (memcmp(buf, key, strlen(key)) != 0)
200 *valp = buf + strlen(key);
204 EXPORT_SYMBOL(class_match_param);
206 static int parse_nid(char *buf, void *value, int quiet)
208 lnet_nid_t *nid = (lnet_nid_t *)value;
210 *nid = libcfs_str2nid(buf);
211 if (*nid != LNET_NID_ANY)
215 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
219 static int parse_net(char *buf, void *value)
221 __u32 *net = (__u32 *)value;
223 *net = libcfs_str2net(buf);
224 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
236 endh is set to next separator */
237 static int class_parse_value(char *buf, int opc, void *value, char **endh,
246 while (*buf == ',' || *buf == ':')
248 if (*buf == ' ' || *buf == '/' || *buf == '\0')
251 /* nid separators or end of nids */
252 endp = strpbrk(buf, ",: /");
254 endp = buf + strlen(buf);
261 case CLASS_PARSE_NID:
262 rc = parse_nid(buf, value, quiet);
264 case CLASS_PARSE_NET:
265 rc = parse_net(buf, value);
276 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
278 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
280 EXPORT_SYMBOL(class_parse_nid);
282 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
284 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
286 EXPORT_SYMBOL(class_parse_nid_quiet);
288 int class_parse_net(char *buf, __u32 *net, char **endh)
290 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
292 EXPORT_SYMBOL(class_parse_net);
294 /* 1 param contains key and match
295 * 0 param contains key and not match
296 * -1 param does not contain key
298 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
303 while (class_find_param(buf, key, &buf) == 0) {
304 /* please restrict to the nids pertaining to
305 * the specified nids */
306 while (class_parse_nid(buf, &tmp, &buf) == 0) {
314 EXPORT_SYMBOL(class_match_nid);
316 int class_match_net(char *buf, char *key, __u32 net)
321 while (class_find_param(buf, key, &buf) == 0) {
322 /* please restrict to the nids pertaining to
323 * the specified networks */
324 while (class_parse_net(buf, &tmp, &buf) == 0) {
332 EXPORT_SYMBOL(class_match_net);
334 /********************** class fns **********************/
337 * Create a new obd device and set the type, name and uuid. If successful,
338 * the new device can be accessed by either name or uuid.
340 int class_attach(struct lustre_cfg *lcfg)
342 struct obd_device *obd = NULL;
343 char *typename, *name, *uuid;
347 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
348 CERROR("No type passed!\n");
351 typename = lustre_cfg_string(lcfg, 1);
353 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
354 CERROR("No name passed!\n");
357 name = lustre_cfg_string(lcfg, 0);
359 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
360 CERROR("No UUID passed!\n");
363 uuid = lustre_cfg_string(lcfg, 2);
365 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
366 MKSTR(typename), MKSTR(name), MKSTR(uuid));
368 obd = class_newdev(typename, name);
370 /* Already exists or out of obds */
373 CERROR("Cannot create device %s of type %s : %d\n",
377 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
379 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
380 "obd %p obd_magic %08X != %08X\n",
381 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
382 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
383 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
385 rwlock_init(&obd->obd_pool_lock);
386 obd->obd_pool_limit = 0;
387 obd->obd_pool_slv = 0;
389 CFS_INIT_LIST_HEAD(&obd->obd_exports);
390 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
391 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
392 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
393 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
394 spin_lock_init(&obd->obd_nid_lock);
395 spin_lock_init(&obd->obd_dev_lock);
396 mutex_init(&obd->obd_dev_mutex);
397 spin_lock_init(&obd->obd_osfs_lock);
398 /* obd->obd_osfs_age must be set to a value in the distant
399 * past to guarantee a fresh statfs is fetched on mount. */
400 obd->obd_osfs_age = cfs_time_shift_64(-1000);
402 /* XXX belongs in setup not attach */
403 init_rwsem(&obd->obd_observer_link_sem);
405 cfs_init_timer(&obd->obd_recovery_timer);
406 spin_lock_init(&obd->obd_recovery_task_lock);
407 cfs_waitq_init(&obd->obd_next_transno_waitq);
408 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
409 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
410 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
411 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
412 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
414 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
416 obd->obd_conn_inprogress = 0;
419 if (len >= sizeof(obd->obd_uuid)) {
420 CERROR("uuid must be < %d bytes long\n",
421 (int)sizeof(obd->obd_uuid));
422 GOTO(out, rc = -EINVAL);
424 memcpy(obd->obd_uuid.uuid, uuid, len);
427 if (OBP(obd, attach)) {
428 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
430 GOTO(out, rc = -EINVAL);
433 /* Detach drops this */
434 spin_lock(&obd->obd_dev_lock);
435 cfs_atomic_set(&obd->obd_refcount, 1);
436 spin_unlock(&obd->obd_dev_lock);
437 lu_ref_init(&obd->obd_reference);
438 lu_ref_add(&obd->obd_reference, "attach", obd);
440 obd->obd_attached = 1;
441 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
442 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
446 class_release_dev(obd);
450 EXPORT_SYMBOL(class_attach);
452 /** Create hashes, self-export, and call type-specific setup.
453 * Setup is effectively the "start this obd" call.
455 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
458 struct obd_export *exp;
461 LASSERT(obd != NULL);
462 LASSERTF(obd == class_num2obd(obd->obd_minor),
463 "obd %p != obd_devs[%d] %p\n",
464 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
465 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
466 "obd %p obd_magic %08x != %08x\n",
467 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
469 /* have we attached a type to this device? */
470 if (!obd->obd_attached) {
471 CERROR("Device %d not attached\n", obd->obd_minor);
475 if (obd->obd_set_up) {
476 CERROR("Device %d already setup (type %s)\n",
477 obd->obd_minor, obd->obd_type->typ_name);
481 /* is someone else setting us up right now? (attach inits spinlock) */
482 spin_lock(&obd->obd_dev_lock);
483 if (obd->obd_starting) {
484 spin_unlock(&obd->obd_dev_lock);
485 CERROR("Device %d setup in progress (type %s)\n",
486 obd->obd_minor, obd->obd_type->typ_name);
489 /* just leave this on forever. I can't use obd_set_up here because
490 other fns check that status, and we're not actually set up yet. */
491 obd->obd_starting = 1;
492 obd->obd_uuid_hash = NULL;
493 obd->obd_nid_hash = NULL;
494 obd->obd_nid_stats_hash = NULL;
495 spin_unlock(&obd->obd_dev_lock);
497 /* create an uuid-export lustre hash */
498 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
501 HASH_UUID_BKT_BITS, 0,
504 &uuid_hash_ops, CFS_HASH_DEFAULT);
505 if (!obd->obd_uuid_hash)
506 GOTO(err_hash, err = -ENOMEM);
508 /* create a nid-export lustre hash */
509 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
512 HASH_NID_BKT_BITS, 0,
515 &nid_hash_ops, CFS_HASH_DEFAULT);
516 if (!obd->obd_nid_hash)
517 GOTO(err_hash, err = -ENOMEM);
519 /* create a nid-stats lustre hash */
520 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
521 HASH_NID_STATS_CUR_BITS,
522 HASH_NID_STATS_MAX_BITS,
523 HASH_NID_STATS_BKT_BITS, 0,
526 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
527 if (!obd->obd_nid_stats_hash)
528 GOTO(err_hash, err = -ENOMEM);
530 exp = class_new_export(obd, &obd->obd_uuid);
532 GOTO(err_hash, err = PTR_ERR(exp));
534 obd->obd_self_export = exp;
535 cfs_list_del_init(&exp->exp_obd_chain_timed);
536 class_export_put(exp);
538 err = obd_setup(obd, lcfg);
544 spin_lock(&obd->obd_dev_lock);
545 /* cleanup drops this */
546 class_incref(obd, "setup", obd);
547 spin_unlock(&obd->obd_dev_lock);
549 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
550 obd->obd_name, obd->obd_uuid.uuid);
554 if (obd->obd_self_export) {
555 class_unlink_export(obd->obd_self_export);
556 obd->obd_self_export = NULL;
559 if (obd->obd_uuid_hash) {
560 cfs_hash_putref(obd->obd_uuid_hash);
561 obd->obd_uuid_hash = NULL;
563 if (obd->obd_nid_hash) {
564 cfs_hash_putref(obd->obd_nid_hash);
565 obd->obd_nid_hash = NULL;
567 if (obd->obd_nid_stats_hash) {
568 cfs_hash_putref(obd->obd_nid_stats_hash);
569 obd->obd_nid_stats_hash = NULL;
571 obd->obd_starting = 0;
572 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
575 EXPORT_SYMBOL(class_setup);
577 /** We have finished using this obd and are ready to destroy it.
578 * There can be no more references to this obd.
580 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
584 if (obd->obd_set_up) {
585 CERROR("OBD device %d still set up\n", obd->obd_minor);
589 spin_lock(&obd->obd_dev_lock);
590 if (!obd->obd_attached) {
591 spin_unlock(&obd->obd_dev_lock);
592 CERROR("OBD device %d not attached\n", obd->obd_minor);
595 obd->obd_attached = 0;
596 spin_unlock(&obd->obd_dev_lock);
598 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
599 obd->obd_name, obd->obd_uuid.uuid);
601 class_decref(obd, "attach", obd);
604 EXPORT_SYMBOL(class_detach);
606 /** Start shutting down the obd. There may be in-progess ops when
607 * this is called. We tell them to start shutting down with a call
608 * to class_disconnect_exports().
610 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
616 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
618 if (!obd->obd_set_up) {
619 CERROR("Device %d not setup\n", obd->obd_minor);
623 spin_lock(&obd->obd_dev_lock);
624 if (obd->obd_stopping) {
625 spin_unlock(&obd->obd_dev_lock);
626 CERROR("OBD %d already stopping\n", obd->obd_minor);
629 /* Leave this on forever */
630 obd->obd_stopping = 1;
632 /* wait for already-arrived-connections to finish. */
633 while (obd->obd_conn_inprogress > 0) {
634 spin_unlock(&obd->obd_dev_lock);
638 spin_lock(&obd->obd_dev_lock);
640 spin_unlock(&obd->obd_dev_lock);
642 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
643 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
649 LCONSOLE_WARN("Failing over %s\n",
652 obd->obd_no_transno = 1;
653 obd->obd_no_recov = 1;
654 if (OBP(obd, iocontrol)) {
655 obd_iocontrol(OBD_IOC_SYNC,
656 obd->obd_self_export,
661 CERROR("Unrecognised flag '%c'\n", *flag);
665 LASSERT(obd->obd_self_export);
667 /* The three references that should be remaining are the
668 * obd_self_export and the attach and setup references. */
669 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
670 /* refcounf - 3 might be the number of real exports
671 (excluding self export). But class_incref is called
672 by other things as well, so don't count on it. */
673 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
674 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
675 dump_exports(obd, 0);
676 class_disconnect_exports(obd);
679 /* Precleanup, we must make sure all exports get destroyed. */
680 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
682 CERROR("Precleanup %s returned %d\n",
685 /* destroy an uuid-export hash body */
686 if (obd->obd_uuid_hash) {
687 cfs_hash_putref(obd->obd_uuid_hash);
688 obd->obd_uuid_hash = NULL;
691 /* destroy a nid-export hash body */
692 if (obd->obd_nid_hash) {
693 cfs_hash_putref(obd->obd_nid_hash);
694 obd->obd_nid_hash = NULL;
697 /* destroy a nid-stats hash body */
698 if (obd->obd_nid_stats_hash) {
699 cfs_hash_putref(obd->obd_nid_stats_hash);
700 obd->obd_nid_stats_hash = NULL;
703 class_decref(obd, "setup", obd);
708 EXPORT_SYMBOL(class_cleanup);
710 struct obd_device *class_incref(struct obd_device *obd,
711 const char *scope, const void *source)
713 lu_ref_add_atomic(&obd->obd_reference, scope, source);
714 cfs_atomic_inc(&obd->obd_refcount);
715 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
716 cfs_atomic_read(&obd->obd_refcount));
720 EXPORT_SYMBOL(class_incref);
722 void class_decref(struct obd_device *obd, const char *scope, const void *source)
727 spin_lock(&obd->obd_dev_lock);
728 cfs_atomic_dec(&obd->obd_refcount);
729 refs = cfs_atomic_read(&obd->obd_refcount);
730 spin_unlock(&obd->obd_dev_lock);
731 lu_ref_del(&obd->obd_reference, scope, source);
733 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
735 if ((refs == 1) && obd->obd_stopping) {
736 /* All exports have been destroyed; there should
737 be no more in-progress ops by this point.*/
739 spin_lock(&obd->obd_self_export->exp_lock);
740 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
741 spin_unlock(&obd->obd_self_export->exp_lock);
743 /* note that we'll recurse into class_decref again */
744 class_unlink_export(obd->obd_self_export);
749 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
750 obd->obd_name, obd->obd_uuid.uuid);
751 LASSERT(!obd->obd_attached);
752 if (obd->obd_stopping) {
753 /* If we're not stopping, we were never set up */
754 err = obd_cleanup(obd);
756 CERROR("Cleanup %s returned %d\n",
759 if (OBP(obd, detach)) {
760 err = OBP(obd, detach)(obd);
762 CERROR("Detach returned %d\n", err);
764 class_release_dev(obd);
767 EXPORT_SYMBOL(class_decref);
769 /** Add a failover nid location.
770 * Client obd types contact server obd types using this nid list.
772 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
774 struct obd_import *imp;
775 struct obd_uuid uuid;
779 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
780 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
781 CERROR("invalid conn_uuid\n");
784 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
785 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
786 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
787 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
788 CERROR("can't add connection on non-client dev\n");
792 imp = obd->u.cli.cl_import;
794 CERROR("try to add conn on immature client dev\n");
798 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
799 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
803 EXPORT_SYMBOL(class_add_conn);
805 /** Remove a failover nid location.
807 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
809 struct obd_import *imp;
810 struct obd_uuid uuid;
814 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
815 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
816 CERROR("invalid conn_uuid\n");
819 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
820 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
821 CERROR("can't del connection on non-client dev\n");
825 imp = obd->u.cli.cl_import;
827 CERROR("try to del conn on immature client dev\n");
831 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
832 rc = obd_del_conn(imp, &uuid);
837 CFS_LIST_HEAD(lustre_profile_list);
839 struct lustre_profile *class_get_profile(const char * prof)
841 struct lustre_profile *lprof;
844 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
845 if (!strcmp(lprof->lp_profile, prof)) {
851 EXPORT_SYMBOL(class_get_profile);
853 /** Create a named "profile".
854 * This defines the mdc and osc names to use for a client.
855 * This also is used to define the lov to be used by a mdt.
857 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
858 int mdclen, char *mdc)
860 struct lustre_profile *lprof;
864 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
866 OBD_ALLOC(lprof, sizeof(*lprof));
869 CFS_INIT_LIST_HEAD(&lprof->lp_list);
871 LASSERT(proflen == (strlen(prof) + 1));
872 OBD_ALLOC(lprof->lp_profile, proflen);
873 if (lprof->lp_profile == NULL)
874 GOTO(out, err = -ENOMEM);
875 memcpy(lprof->lp_profile, prof, proflen);
877 LASSERT(osclen == (strlen(osc) + 1));
878 OBD_ALLOC(lprof->lp_dt, osclen);
879 if (lprof->lp_dt == NULL)
880 GOTO(out, err = -ENOMEM);
881 memcpy(lprof->lp_dt, osc, osclen);
884 LASSERT(mdclen == (strlen(mdc) + 1));
885 OBD_ALLOC(lprof->lp_md, mdclen);
886 if (lprof->lp_md == NULL)
887 GOTO(out, err = -ENOMEM);
888 memcpy(lprof->lp_md, mdc, mdclen);
891 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
896 OBD_FREE(lprof->lp_md, mdclen);
898 OBD_FREE(lprof->lp_dt, osclen);
899 if (lprof->lp_profile)
900 OBD_FREE(lprof->lp_profile, proflen);
901 OBD_FREE(lprof, sizeof(*lprof));
905 void class_del_profile(const char *prof)
907 struct lustre_profile *lprof;
910 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
912 lprof = class_get_profile(prof);
914 cfs_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);
923 EXPORT_SYMBOL(class_del_profile);
926 void class_del_profiles(void)
928 struct lustre_profile *lprof, *n;
931 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
932 cfs_list_del(&lprof->lp_list);
933 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
934 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
936 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
937 OBD_FREE(lprof, sizeof *lprof);
941 EXPORT_SYMBOL(class_del_profiles);
943 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
946 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
948 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
950 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
952 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
953 at_early_margin = val;
954 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
956 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
957 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
958 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
962 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
967 /* We can't call ll_process_config or lquota_process_config directly because
968 * it lives in a module that must be loaded after this one. */
969 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
970 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
972 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
974 client_process_config = cpc;
976 EXPORT_SYMBOL(lustre_register_client_process_config);
979 * Rename the proc parameter in \a cfg with a new name \a new_name.
981 * \param cfg config structure which contains the proc parameter
982 * \param new_name new name of the proc parameter
984 * \retval valid-pointer pointer to the newly-allocated config structure
985 * which contains the renamed proc parameter
986 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
987 * not contain a proc parameter
988 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
990 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
991 const char *new_name)
993 struct lustre_cfg_bufs *bufs = NULL;
994 struct lustre_cfg *new_cfg = NULL;
996 char *new_param = NULL;
1002 if (cfg == NULL || new_name == NULL)
1003 RETURN(ERR_PTR(-EINVAL));
1005 param = lustre_cfg_string(cfg, 1);
1007 RETURN(ERR_PTR(-EINVAL));
1009 value = strchr(param, '=');
1011 name_len = strlen(param);
1013 name_len = value - param;
1015 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1017 OBD_ALLOC(new_param, new_len);
1018 if (new_param == NULL)
1019 RETURN(ERR_PTR(-ENOMEM));
1021 strcpy(new_param, new_name);
1023 strcat(new_param, value);
1025 OBD_ALLOC_PTR(bufs);
1027 OBD_FREE(new_param, new_len);
1028 RETURN(ERR_PTR(-ENOMEM));
1031 lustre_cfg_bufs_reset(bufs, NULL);
1032 lustre_cfg_bufs_init(bufs, cfg);
1033 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1035 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
1037 OBD_FREE(new_param, new_len);
1039 if (new_cfg == NULL)
1040 RETURN(ERR_PTR(-ENOMEM));
1042 new_cfg->lcfg_num = cfg->lcfg_num;
1043 new_cfg->lcfg_flags = cfg->lcfg_flags;
1044 new_cfg->lcfg_nid = cfg->lcfg_nid;
1045 new_cfg->lcfg_nal = cfg->lcfg_nal;
1049 EXPORT_SYMBOL(lustre_cfg_rename);
1051 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1053 quota_process_config = qpc;
1055 EXPORT_SYMBOL(lustre_register_quota_process_config);
1057 /** Process configuration commands given in lustre_cfg form.
1058 * These may come from direct calls (e.g. class_manual_cleanup)
1059 * or processing the config llog, or ioctl from lctl.
1061 int class_process_config(struct lustre_cfg *lcfg)
1063 struct obd_device *obd;
1066 LASSERT(lcfg && !IS_ERR(lcfg));
1067 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1069 /* Commands that don't need a device */
1070 switch(lcfg->lcfg_command) {
1072 err = class_attach(lcfg);
1075 case LCFG_ADD_UUID: {
1076 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1077 " (%s)\n", lustre_cfg_string(lcfg, 1),
1078 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1080 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1083 case LCFG_DEL_UUID: {
1084 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1085 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1086 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1088 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1091 case LCFG_MOUNTOPT: {
1092 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1093 lustre_cfg_string(lcfg, 1),
1094 lustre_cfg_string(lcfg, 2),
1095 lustre_cfg_string(lcfg, 3));
1096 /* set these mount options somewhere, so ll_fill_super
1098 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1099 lustre_cfg_string(lcfg, 1),
1100 LUSTRE_CFG_BUFLEN(lcfg, 2),
1101 lustre_cfg_string(lcfg, 2),
1102 LUSTRE_CFG_BUFLEN(lcfg, 3),
1103 lustre_cfg_string(lcfg, 3));
1106 case LCFG_DEL_MOUNTOPT: {
1107 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1108 lustre_cfg_string(lcfg, 1));
1109 class_del_profile(lustre_cfg_string(lcfg, 1));
1112 case LCFG_SET_TIMEOUT: {
1113 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1114 obd_timeout, lcfg->lcfg_num);
1115 obd_timeout = max(lcfg->lcfg_num, 1U);
1116 obd_timeout_set = 1;
1119 case LCFG_SET_LDLM_TIMEOUT: {
1120 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1121 ldlm_timeout, lcfg->lcfg_num);
1122 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1123 if (ldlm_timeout >= obd_timeout)
1124 ldlm_timeout = max(obd_timeout / 3, 1U);
1125 ldlm_timeout_set = 1;
1128 case LCFG_SET_UPCALL: {
1129 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1130 /* COMPAT_146 Don't fail on old configs */
1134 struct cfg_marker *marker;
1135 marker = lustre_cfg_buf(lcfg, 1);
1136 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1137 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1142 /* llite has no obd */
1143 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1144 PARAM_LLITE, 0) == 0) &&
1145 client_process_config) {
1146 err = (*client_process_config)(lcfg);
1148 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1149 PARAM_SYS, &tmp) == 0)) {
1150 /* Global param settings */
1151 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
1152 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
1153 unknown globals would cause config to fail */
1155 CWARN("Ignoring unknown param %s\n", tmp);
1157 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1158 PARAM_QUOTA, &tmp) == 0) &&
1159 quota_process_config) {
1160 err = (*quota_process_config)(lcfg);
1168 /* Commands that require a device */
1169 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1171 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1172 CERROR("this lcfg command requires a device name\n");
1174 CERROR("no device for: %s\n",
1175 lustre_cfg_string(lcfg, 0));
1177 GOTO(out, err = -EINVAL);
1180 switch(lcfg->lcfg_command) {
1182 err = class_setup(obd, lcfg);
1186 err = class_detach(obd, lcfg);
1189 case LCFG_CLEANUP: {
1190 err = class_cleanup(obd, lcfg);
1193 case LCFG_ADD_CONN: {
1194 err = class_add_conn(obd, lcfg);
1197 case LCFG_DEL_CONN: {
1198 err = class_del_conn(obd, lcfg);
1201 case LCFG_POOL_NEW: {
1202 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1206 case LCFG_POOL_ADD: {
1207 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1208 lustre_cfg_string(lcfg, 3));
1212 case LCFG_POOL_REM: {
1213 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1214 lustre_cfg_string(lcfg, 3));
1218 case LCFG_POOL_DEL: {
1219 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1224 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1230 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1231 CWARN("Ignoring error %d on optional command %#x\n", err,
1232 lcfg->lcfg_command);
1237 EXPORT_SYMBOL(class_process_config);
1239 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1240 struct lustre_cfg *lcfg, void *data)
1243 struct lprocfs_vars *var;
1245 int i, keylen, vallen;
1246 int matched = 0, j = 0;
1251 if (lcfg->lcfg_command != LCFG_PARAM) {
1252 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1256 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1257 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1258 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1259 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1260 key = lustre_cfg_buf(lcfg, i);
1261 /* Strip off prefix */
1262 class_match_param(key, prefix, &key);
1263 sval = strchr(key, '=');
1264 if (!sval || (*(sval + 1) == 0)) {
1265 CERROR("Can't parse param %s (missing '=')\n", key);
1266 /* rc = -EINVAL; continue parsing other params */
1269 keylen = sval - key;
1271 vallen = strlen(sval);
1274 /* Search proc entries */
1275 while (lvars[j].name) {
1277 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1278 keylen == strlen(var->name)) {
1281 if (var->write_fptr) {
1285 rc = (var->write_fptr)(NULL, sval,
1294 /* If the prefix doesn't match, return error so we
1295 can pass it down the stack */
1296 if (strnchr(key, keylen, '.'))
1298 CERROR("%s: unknown param %s\n",
1299 (char *)lustre_cfg_string(lcfg, 0), key);
1300 /* rc = -EINVAL; continue parsing other params */
1302 } else if (rc < 0) {
1303 CERROR("writing proc entry %s err %d\n",
1307 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1308 lustre_cfg_string(lcfg, 0),
1309 (int)strlen(prefix) - 1, prefix,
1310 (int)(sval - key - 1), key, sval);
1320 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1321 /* Don't throw config error */
1325 EXPORT_SYMBOL(class_process_proc_param);
1328 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1330 #define lustre_check_exclusion(a,b) 0
1333 /** Parse a configuration llog, doing various manipulations on them
1334 * for various reasons, (modifications for compatibility, skip obsolete
1335 * records, change uuids, etc), then class_process_config() resulting
1338 int class_config_llog_handler(const struct lu_env *env,
1339 struct llog_handle *handle,
1340 struct llog_rec_hdr *rec, void *data)
1342 struct config_llog_instance *clli = data;
1343 int cfg_len = rec->lrh_len;
1344 char *cfg_buf = (char*) (rec + 1);
1348 //class_config_dump_handler(handle, rec, data);
1350 switch (rec->lrh_type) {
1352 struct lustre_cfg *lcfg, *lcfg_new;
1353 struct lustre_cfg_bufs bufs;
1354 char *inst_name = NULL;
1356 int inst = 0, swab = 0;
1358 lcfg = (struct lustre_cfg *)cfg_buf;
1359 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1360 lustre_swab_lustre_cfg(lcfg);
1364 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1368 /* Figure out config state info */
1369 if (lcfg->lcfg_command == LCFG_MARKER) {
1370 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1371 lustre_swab_cfg_marker(marker, swab,
1372 LUSTRE_CFG_BUFLEN(lcfg, 1));
1373 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1374 clli->cfg_flags, marker->cm_flags);
1375 if (marker->cm_flags & CM_START) {
1376 /* all previous flags off */
1377 clli->cfg_flags = CFG_F_MARKER;
1378 if (marker->cm_flags & CM_SKIP) {
1379 clli->cfg_flags |= CFG_F_SKIP;
1380 CDEBUG(D_CONFIG, "SKIP #%d\n",
1382 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1384 lustre_check_exclusion(clli->cfg_sb,
1385 marker->cm_tgtname))) {
1386 clli->cfg_flags |= CFG_F_EXCLUDE;
1387 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1390 } else if (marker->cm_flags & CM_END) {
1391 clli->cfg_flags = 0;
1394 /* A config command without a start marker before it is
1395 illegal (post 146) */
1396 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1397 !(clli->cfg_flags & CFG_F_MARKER) &&
1398 (lcfg->lcfg_command != LCFG_MARKER)) {
1399 CWARN("Config not inside markers, ignoring! "
1400 "(inst: %p, uuid: %s, flags: %#x)\n",
1402 clli->cfg_uuid.uuid, clli->cfg_flags);
1403 clli->cfg_flags |= CFG_F_SKIP;
1405 if (clli->cfg_flags & CFG_F_SKIP) {
1406 CDEBUG(D_CONFIG, "skipping %#x\n",
1409 /* No processing! */
1414 * For interoperability between 1.8 and 2.0,
1415 * rename "mds" obd device type to "mdt".
1418 char *typename = lustre_cfg_string(lcfg, 1);
1419 char *index = lustre_cfg_string(lcfg, 2);
1421 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1422 strcmp(typename, "mds") == 0)) {
1423 CWARN("For 1.8 interoperability, rename obd "
1424 "type from mds to mdt\n");
1427 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1428 strcmp(index, "type") == 0)) {
1429 CDEBUG(D_INFO, "For 1.8 interoperability, "
1430 "set this index to '0'\n");
1436 #if defined(HAVE_SERVER_SUPPORT) && defined(__KERNEL__)
1437 /* newer MDS replaces LOV/OSC with LOD/OSP */
1439 char *typename = lustre_cfg_string(lcfg, 1);
1441 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1442 strcmp(typename, LUSTRE_LOV_NAME) == 0) &&
1443 IS_MDT(s2lsi(clli->cfg_sb))) {
1445 "For 2.x interoperability, rename obd "
1446 "type from lov to lod (%s)\n",
1447 s2lsi(clli->cfg_sb)->lsi_svname);
1448 strcpy(typename, LUSTRE_LOD_NAME);
1450 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1451 strcmp(typename, LUSTRE_OSC_NAME) == 0) &&
1452 IS_MDT(s2lsi(clli->cfg_sb))) {
1454 "For 2.x interoperability, rename obd "
1455 "type from osc to osp (%s)\n",
1456 s2lsi(clli->cfg_sb)->lsi_svname);
1457 strcpy(typename, LUSTRE_OSP_NAME);
1462 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1463 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1464 /* Add inactive instead */
1465 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1467 lustre_cfg_bufs_init(&bufs, lcfg);
1469 if (clli && clli->cfg_instance &&
1470 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1472 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1473 sizeof(clli->cfg_instance) * 2 + 4;
1474 OBD_ALLOC(inst_name, inst_len);
1475 if (inst_name == NULL)
1476 GOTO(out, rc = -ENOMEM);
1477 sprintf(inst_name, "%s-%p",
1478 lustre_cfg_string(lcfg, 0),
1479 clli->cfg_instance);
1480 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1481 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1482 lcfg->lcfg_command, inst_name);
1485 /* we override the llog's uuid for clients, to insure they
1487 if (clli && clli->cfg_instance != NULL &&
1488 lcfg->lcfg_command == LCFG_ATTACH) {
1489 lustre_cfg_bufs_set_string(&bufs, 2,
1490 clli->cfg_uuid.uuid);
1493 * sptlrpc config record, we expect 2 data segments:
1494 * [0]: fs_name/target_name,
1496 * moving them to index [1] and [2], and insert MGC's
1497 * obdname at index [0].
1499 if (clli && clli->cfg_instance == NULL &&
1500 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1501 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1502 bufs.lcfg_buflen[1]);
1503 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1504 bufs.lcfg_buflen[0]);
1505 lustre_cfg_bufs_set_string(&bufs, 0,
1509 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1511 lcfg_new->lcfg_num = lcfg->lcfg_num;
1512 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1514 /* XXX Hack to try to remain binary compatible with
1515 * pre-newconfig logs */
1516 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1517 (lcfg->lcfg_nid >> 32) == 0) {
1518 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1520 lcfg_new->lcfg_nid =
1521 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1522 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1523 lcfg->lcfg_nal, addr,
1524 libcfs_nid2str(lcfg_new->lcfg_nid));
1526 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1529 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1531 rc = class_process_config(lcfg_new);
1532 lustre_cfg_free(lcfg_new);
1535 OBD_FREE(inst_name, inst_len);
1539 CERROR("Unknown llog record type %#x encountered\n",
1545 CERROR("%s: cfg command failed: rc = %d\n",
1546 handle->lgh_ctxt->loc_obd->obd_name, rc);
1547 class_config_dump_handler(NULL, handle, rec, data);
1551 EXPORT_SYMBOL(class_config_llog_handler);
1553 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1554 char *name, struct config_llog_instance *cfg)
1556 struct llog_process_cat_data cd = {0, 0};
1557 struct llog_handle *llh;
1562 CDEBUG(D_INFO, "looking up llog %s\n", name);
1563 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1567 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1569 GOTO(parse_out, rc);
1571 /* continue processing from where we last stopped to end-of-log */
1573 cd.lpcd_first_idx = cfg->cfg_last_idx;
1574 callback = cfg->cfg_callback;
1575 LASSERT(callback != NULL);
1577 callback = class_config_llog_handler;
1580 cd.lpcd_last_idx = 0;
1582 rc = llog_process(env, llh, callback, cfg, &cd);
1584 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1585 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1587 cfg->cfg_last_idx = cd.lpcd_last_idx;
1590 llog_close(env, llh);
1593 EXPORT_SYMBOL(class_config_parse_llog);
1596 * parse config record and output dump in supplied buffer.
1597 * This is separated from class_config_dump_handler() to use
1598 * for ioctl needs as well
1600 int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
1602 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1604 char *end = buf + size;
1609 LASSERT(rec->lrh_type == OBD_CFG_REC);
1610 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1614 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
1615 if (lcfg->lcfg_flags)
1616 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1620 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
1623 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1624 libcfs_nid2str(lcfg->lcfg_nid),
1627 if (lcfg->lcfg_command == LCFG_MARKER) {
1628 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1630 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1631 marker->cm_step, marker->cm_flags,
1632 marker->cm_tgtname, marker->cm_comment);
1636 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1637 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1638 lustre_cfg_string(lcfg, i));
1641 /* return consumed bytes */
1646 int class_config_dump_handler(const struct lu_env *env,
1647 struct llog_handle *handle,
1648 struct llog_rec_hdr *rec, void *data)
1655 OBD_ALLOC(outstr, 256);
1659 if (rec->lrh_type == OBD_CFG_REC) {
1660 class_config_parse_rec(rec, outstr, 256);
1661 LCONSOLE(D_WARNING, " %s\n", outstr);
1663 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1667 OBD_FREE(outstr, 256);
1671 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1672 char *name, struct config_llog_instance *cfg)
1674 struct llog_handle *llh;
1679 LCONSOLE_INFO("Dumping config log %s\n", name);
1681 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1685 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1687 GOTO(parse_out, rc);
1689 rc = llog_process(env, llh, class_config_dump_handler, cfg, NULL);
1691 llog_close(env, llh);
1693 LCONSOLE_INFO("End config log %s\n", name);
1696 EXPORT_SYMBOL(class_config_dump_llog);
1698 /** Call class_cleanup and class_detach.
1699 * "Manual" only in the sense that we're faking lcfg commands.
1701 int class_manual_cleanup(struct obd_device *obd)
1704 struct lustre_cfg *lcfg;
1705 struct lustre_cfg_bufs bufs;
1710 CERROR("empty cleanup\n");
1719 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1720 obd->obd_name, flags);
1722 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1723 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1724 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1728 rc = class_process_config(lcfg);
1730 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1734 /* the lcfg is almost the same for both ops */
1735 lcfg->lcfg_command = LCFG_DETACH;
1736 rc = class_process_config(lcfg);
1738 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1740 lustre_cfg_free(lcfg);
1743 EXPORT_SYMBOL(class_manual_cleanup);
1746 * uuid<->export lustre hash operations
1750 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1752 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1753 sizeof(((struct obd_uuid *)key)->uuid), mask);
1757 uuid_key(cfs_hlist_node_t *hnode)
1759 struct obd_export *exp;
1761 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1763 return &exp->exp_client_uuid;
1767 * NOTE: It is impossible to find an export that is in failed
1768 * state with this function
1771 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1773 struct obd_export *exp;
1776 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1778 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1783 uuid_export_object(cfs_hlist_node_t *hnode)
1785 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1789 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1791 struct obd_export *exp;
1793 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1794 class_export_get(exp);
1798 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1800 struct obd_export *exp;
1802 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1803 class_export_put(exp);
1806 static cfs_hash_ops_t uuid_hash_ops = {
1807 .hs_hash = uuid_hash,
1809 .hs_keycmp = uuid_keycmp,
1810 .hs_object = uuid_export_object,
1811 .hs_get = uuid_export_get,
1812 .hs_put_locked = uuid_export_put_locked,
1817 * nid<->export hash operations
1821 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1823 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1827 nid_key(cfs_hlist_node_t *hnode)
1829 struct obd_export *exp;
1831 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1833 RETURN(&exp->exp_connection->c_peer.nid);
1837 * NOTE: It is impossible to find an export that is in failed
1838 * state with this function
1841 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1843 struct obd_export *exp;
1846 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1848 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1853 nid_export_object(cfs_hlist_node_t *hnode)
1855 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1859 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1861 struct obd_export *exp;
1863 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1864 class_export_get(exp);
1868 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1870 struct obd_export *exp;
1872 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1873 class_export_put(exp);
1876 static cfs_hash_ops_t nid_hash_ops = {
1877 .hs_hash = nid_hash,
1879 .hs_keycmp = nid_kepcmp,
1880 .hs_object = nid_export_object,
1881 .hs_get = nid_export_get,
1882 .hs_put_locked = nid_export_put_locked,
1887 * nid<->nidstats hash operations
1891 nidstats_key(cfs_hlist_node_t *hnode)
1893 struct nid_stat *ns;
1895 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1901 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1903 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1907 nidstats_object(cfs_hlist_node_t *hnode)
1909 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1913 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1915 struct nid_stat *ns;
1917 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1922 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1924 struct nid_stat *ns;
1926 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1930 static cfs_hash_ops_t nid_stat_hash_ops = {
1931 .hs_hash = nid_hash,
1932 .hs_key = nidstats_key,
1933 .hs_keycmp = nidstats_keycmp,
1934 .hs_object = nidstats_object,
1935 .hs_get = nidstats_get,
1936 .hs_put_locked = nidstats_put_locked,