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 cfs_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 cfs_spin_lock_init(&obd->obd_nid_lock);
395 cfs_spin_lock_init(&obd->obd_dev_lock);
396 cfs_mutex_init(&obd->obd_dev_mutex);
397 cfs_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 cfs_init_rwsem(&obd->obd_observer_link_sem);
405 cfs_init_timer(&obd->obd_recovery_timer);
406 cfs_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 cfs_spin_lock(&obd->obd_dev_lock);
435 cfs_atomic_set(&obd->obd_refcount, 1);
436 cfs_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 cfs_spin_lock(&obd->obd_dev_lock);
483 if (obd->obd_starting) {
484 cfs_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 cfs_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 cfs_spin_lock(&obd->obd_dev_lock);
545 /* cleanup drops this */
546 class_incref(obd, "setup", obd);
547 cfs_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 cfs_spin_lock(&obd->obd_dev_lock);
590 if (!obd->obd_attached) {
591 cfs_spin_unlock(&obd->obd_dev_lock);
592 CERROR("OBD device %d not attached\n", obd->obd_minor);
595 obd->obd_attached = 0;
596 cfs_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 cfs_spin_lock(&obd->obd_dev_lock);
624 if (obd->obd_stopping) {
625 cfs_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 cfs_spin_unlock(&obd->obd_dev_lock);
638 cfs_spin_lock(&obd->obd_dev_lock);
640 cfs_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 cfs_spin_lock(&obd->obd_dev_lock);
728 cfs_atomic_dec(&obd->obd_refcount);
729 refs = cfs_atomic_read(&obd->obd_refcount);
730 cfs_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 cfs_spin_lock(&obd->obd_self_export->exp_lock);
740 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
741 cfs_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);
804 /** Remove a failover nid location.
806 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
808 struct obd_import *imp;
809 struct obd_uuid uuid;
813 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
814 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
815 CERROR("invalid conn_uuid\n");
818 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
819 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
820 CERROR("can't del connection on non-client dev\n");
824 imp = obd->u.cli.cl_import;
826 CERROR("try to del conn on immature client dev\n");
830 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
831 rc = obd_del_conn(imp, &uuid);
836 CFS_LIST_HEAD(lustre_profile_list);
838 struct lustre_profile *class_get_profile(const char * prof)
840 struct lustre_profile *lprof;
843 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
844 if (!strcmp(lprof->lp_profile, prof)) {
850 EXPORT_SYMBOL(class_get_profile);
852 /** Create a named "profile".
853 * This defines the mdc and osc names to use for a client.
854 * This also is used to define the lov to be used by a mdt.
856 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
857 int mdclen, char *mdc)
859 struct lustre_profile *lprof;
863 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
865 OBD_ALLOC(lprof, sizeof(*lprof));
868 CFS_INIT_LIST_HEAD(&lprof->lp_list);
870 LASSERT(proflen == (strlen(prof) + 1));
871 OBD_ALLOC(lprof->lp_profile, proflen);
872 if (lprof->lp_profile == NULL)
873 GOTO(out, err = -ENOMEM);
874 memcpy(lprof->lp_profile, prof, proflen);
876 LASSERT(osclen == (strlen(osc) + 1));
877 OBD_ALLOC(lprof->lp_dt, osclen);
878 if (lprof->lp_dt == NULL)
879 GOTO(out, err = -ENOMEM);
880 memcpy(lprof->lp_dt, osc, osclen);
883 LASSERT(mdclen == (strlen(mdc) + 1));
884 OBD_ALLOC(lprof->lp_md, mdclen);
885 if (lprof->lp_md == NULL)
886 GOTO(out, err = -ENOMEM);
887 memcpy(lprof->lp_md, mdc, mdclen);
890 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
895 OBD_FREE(lprof->lp_md, mdclen);
897 OBD_FREE(lprof->lp_dt, osclen);
898 if (lprof->lp_profile)
899 OBD_FREE(lprof->lp_profile, proflen);
900 OBD_FREE(lprof, sizeof(*lprof));
904 void class_del_profile(const char *prof)
906 struct lustre_profile *lprof;
909 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
911 lprof = class_get_profile(prof);
913 cfs_list_del(&lprof->lp_list);
914 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
915 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
917 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
918 OBD_FREE(lprof, sizeof *lprof);
922 EXPORT_SYMBOL(class_del_profile);
925 void class_del_profiles(void)
927 struct lustre_profile *lprof, *n;
930 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
931 cfs_list_del(&lprof->lp_list);
932 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
933 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
935 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
936 OBD_FREE(lprof, sizeof *lprof);
940 EXPORT_SYMBOL(class_del_profiles);
942 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
945 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
947 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
949 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
951 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
952 at_early_margin = val;
953 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
955 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
956 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
957 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
961 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
966 /* We can't call ll_process_config or lquota_process_config directly because
967 * it lives in a module that must be loaded after this one. */
968 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
969 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
971 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
973 client_process_config = cpc;
975 EXPORT_SYMBOL(lustre_register_client_process_config);
978 * Rename the proc parameter in \a cfg with a new name \a new_name.
980 * \param cfg config structure which contains the proc parameter
981 * \param new_name new name of the proc parameter
983 * \retval valid-pointer pointer to the newly-allocated config structure
984 * which contains the renamed proc parameter
985 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
986 * not contain a proc parameter
987 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
989 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
990 const char *new_name)
992 struct lustre_cfg_bufs *bufs = NULL;
993 struct lustre_cfg *new_cfg = NULL;
995 char *new_param = NULL;
1001 if (cfg == NULL || new_name == NULL)
1002 RETURN(ERR_PTR(-EINVAL));
1004 param = lustre_cfg_string(cfg, 1);
1006 RETURN(ERR_PTR(-EINVAL));
1008 value = strchr(param, '=');
1010 name_len = strlen(param);
1012 name_len = value - param;
1014 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1016 OBD_ALLOC(new_param, new_len);
1017 if (new_param == NULL)
1018 RETURN(ERR_PTR(-ENOMEM));
1020 strcpy(new_param, new_name);
1022 strcat(new_param, value);
1024 OBD_ALLOC_PTR(bufs);
1026 OBD_FREE(new_param, new_len);
1027 RETURN(ERR_PTR(-ENOMEM));
1030 lustre_cfg_bufs_reset(bufs, NULL);
1031 lustre_cfg_bufs_init(bufs, cfg);
1032 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1034 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
1036 OBD_FREE(new_param, new_len);
1038 if (new_cfg == NULL)
1039 RETURN(ERR_PTR(-ENOMEM));
1041 new_cfg->lcfg_num = cfg->lcfg_num;
1042 new_cfg->lcfg_flags = cfg->lcfg_flags;
1043 new_cfg->lcfg_nid = cfg->lcfg_nid;
1044 new_cfg->lcfg_nal = cfg->lcfg_nal;
1048 EXPORT_SYMBOL(lustre_cfg_rename);
1050 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1052 quota_process_config = qpc;
1054 EXPORT_SYMBOL(lustre_register_quota_process_config);
1056 /** Process configuration commands given in lustre_cfg form.
1057 * These may come from direct calls (e.g. class_manual_cleanup)
1058 * or processing the config llog, or ioctl from lctl.
1060 int class_process_config(struct lustre_cfg *lcfg)
1062 struct obd_device *obd;
1065 LASSERT(lcfg && !IS_ERR(lcfg));
1066 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1068 /* Commands that don't need a device */
1069 switch(lcfg->lcfg_command) {
1071 err = class_attach(lcfg);
1074 case LCFG_ADD_UUID: {
1075 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1076 " (%s)\n", lustre_cfg_string(lcfg, 1),
1077 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1079 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1082 case LCFG_DEL_UUID: {
1083 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1084 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1085 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1087 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1090 case LCFG_MOUNTOPT: {
1091 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1092 lustre_cfg_string(lcfg, 1),
1093 lustre_cfg_string(lcfg, 2),
1094 lustre_cfg_string(lcfg, 3));
1095 /* set these mount options somewhere, so ll_fill_super
1097 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1098 lustre_cfg_string(lcfg, 1),
1099 LUSTRE_CFG_BUFLEN(lcfg, 2),
1100 lustre_cfg_string(lcfg, 2),
1101 LUSTRE_CFG_BUFLEN(lcfg, 3),
1102 lustre_cfg_string(lcfg, 3));
1105 case LCFG_DEL_MOUNTOPT: {
1106 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1107 lustre_cfg_string(lcfg, 1));
1108 class_del_profile(lustre_cfg_string(lcfg, 1));
1111 case LCFG_SET_TIMEOUT: {
1112 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1113 obd_timeout, lcfg->lcfg_num);
1114 obd_timeout = max(lcfg->lcfg_num, 1U);
1115 obd_timeout_set = 1;
1118 case LCFG_SET_LDLM_TIMEOUT: {
1119 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1120 ldlm_timeout, lcfg->lcfg_num);
1121 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1122 if (ldlm_timeout >= obd_timeout)
1123 ldlm_timeout = max(obd_timeout / 3, 1U);
1124 ldlm_timeout_set = 1;
1127 case LCFG_SET_UPCALL: {
1128 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1129 /* COMPAT_146 Don't fail on old configs */
1133 struct cfg_marker *marker;
1134 marker = lustre_cfg_buf(lcfg, 1);
1135 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1136 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1141 /* llite has no obd */
1142 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1143 PARAM_LLITE, 0) == 0) &&
1144 client_process_config) {
1145 err = (*client_process_config)(lcfg);
1147 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1148 PARAM_SYS, &tmp) == 0)) {
1149 /* Global param settings */
1150 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
1151 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
1152 unknown globals would cause config to fail */
1154 CWARN("Ignoring unknown param %s\n", tmp);
1156 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1157 PARAM_QUOTA, &tmp) == 0) &&
1158 quota_process_config) {
1159 err = (*quota_process_config)(lcfg);
1167 /* Commands that require a device */
1168 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1170 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1171 CERROR("this lcfg command requires a device name\n");
1173 CERROR("no device for: %s\n",
1174 lustre_cfg_string(lcfg, 0));
1176 GOTO(out, err = -EINVAL);
1179 switch(lcfg->lcfg_command) {
1181 err = class_setup(obd, lcfg);
1185 err = class_detach(obd, lcfg);
1188 case LCFG_CLEANUP: {
1189 err = class_cleanup(obd, lcfg);
1192 case LCFG_ADD_CONN: {
1193 err = class_add_conn(obd, lcfg);
1196 case LCFG_DEL_CONN: {
1197 err = class_del_conn(obd, lcfg);
1200 case LCFG_POOL_NEW: {
1201 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1205 case LCFG_POOL_ADD: {
1206 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1207 lustre_cfg_string(lcfg, 3));
1211 case LCFG_POOL_REM: {
1212 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1213 lustre_cfg_string(lcfg, 3));
1217 case LCFG_POOL_DEL: {
1218 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1223 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1229 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1230 CWARN("Ignoring error %d on optional command %#x\n", err,
1231 lcfg->lcfg_command);
1236 EXPORT_SYMBOL(class_process_config);
1238 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1239 struct lustre_cfg *lcfg, void *data)
1242 struct lprocfs_vars *var;
1244 int i, keylen, vallen;
1245 int matched = 0, j = 0;
1250 if (lcfg->lcfg_command != LCFG_PARAM) {
1251 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1255 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1256 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1257 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1258 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1259 key = lustre_cfg_buf(lcfg, i);
1260 /* Strip off prefix */
1261 class_match_param(key, prefix, &key);
1262 sval = strchr(key, '=');
1263 if (!sval || (*(sval + 1) == 0)) {
1264 CERROR("Can't parse param %s (missing '=')\n", key);
1265 /* rc = -EINVAL; continue parsing other params */
1268 keylen = sval - key;
1270 vallen = strlen(sval);
1273 /* Search proc entries */
1274 while (lvars[j].name) {
1276 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1277 keylen == strlen(var->name)) {
1280 if (var->write_fptr) {
1284 rc = (var->write_fptr)(NULL, sval,
1293 /* If the prefix doesn't match, return error so we
1294 can pass it down the stack */
1295 if (strnchr(key, keylen, '.'))
1297 CERROR("%s: unknown param %s\n",
1298 (char *)lustre_cfg_string(lcfg, 0), key);
1299 /* rc = -EINVAL; continue parsing other params */
1301 } else if (rc < 0) {
1302 CERROR("writing proc entry %s err %d\n",
1306 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1307 lustre_cfg_string(lcfg, 0),
1308 (int)strlen(prefix) - 1, prefix,
1309 (int)(sval - key - 1), key, sval);
1319 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1320 /* Don't throw config error */
1324 EXPORT_SYMBOL(class_process_proc_param);
1327 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1329 #define lustre_check_exclusion(a,b) 0
1332 /** Parse a configuration llog, doing various manipulations on them
1333 * for various reasons, (modifications for compatibility, skip obsolete
1334 * records, change uuids, etc), then class_process_config() resulting
1337 static int class_config_llog_handler(const struct lu_env *env,
1338 struct llog_handle *handle,
1339 struct llog_rec_hdr *rec, void *data)
1341 struct config_llog_instance *clli = data;
1342 int cfg_len = rec->lrh_len;
1343 char *cfg_buf = (char*) (rec + 1);
1347 //class_config_dump_handler(handle, rec, data);
1349 switch (rec->lrh_type) {
1351 struct lustre_cfg *lcfg, *lcfg_new;
1352 struct lustre_cfg_bufs bufs;
1353 char *inst_name = NULL;
1355 int inst = 0, swab = 0;
1357 lcfg = (struct lustre_cfg *)cfg_buf;
1358 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1359 lustre_swab_lustre_cfg(lcfg);
1363 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1367 /* Figure out config state info */
1368 if (lcfg->lcfg_command == LCFG_MARKER) {
1369 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1370 lustre_swab_cfg_marker(marker, swab,
1371 LUSTRE_CFG_BUFLEN(lcfg, 1));
1372 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1373 clli->cfg_flags, marker->cm_flags);
1374 if (marker->cm_flags & CM_START) {
1375 /* all previous flags off */
1376 clli->cfg_flags = CFG_F_MARKER;
1377 if (marker->cm_flags & CM_SKIP) {
1378 clli->cfg_flags |= CFG_F_SKIP;
1379 CDEBUG(D_CONFIG, "SKIP #%d\n",
1381 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1383 lustre_check_exclusion(clli->cfg_sb,
1384 marker->cm_tgtname))) {
1385 clli->cfg_flags |= CFG_F_EXCLUDE;
1386 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1389 } else if (marker->cm_flags & CM_END) {
1390 clli->cfg_flags = 0;
1393 /* A config command without a start marker before it is
1394 illegal (post 146) */
1395 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1396 !(clli->cfg_flags & CFG_F_MARKER) &&
1397 (lcfg->lcfg_command != LCFG_MARKER)) {
1398 CWARN("Config not inside markers, ignoring! "
1399 "(inst: %p, uuid: %s, flags: %#x)\n",
1401 clli->cfg_uuid.uuid, clli->cfg_flags);
1402 clli->cfg_flags |= CFG_F_SKIP;
1404 if (clli->cfg_flags & CFG_F_SKIP) {
1405 CDEBUG(D_CONFIG, "skipping %#x\n",
1408 /* No processing! */
1413 * For interoperability between 1.8 and 2.0,
1414 * rename "mds" obd device type to "mdt".
1417 char *typename = lustre_cfg_string(lcfg, 1);
1418 char *index = lustre_cfg_string(lcfg, 2);
1420 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1421 strcmp(typename, "mds") == 0)) {
1422 CWARN("For 1.8 interoperability, rename obd "
1423 "type from mds to mdt\n");
1426 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1427 strcmp(index, "type") == 0)) {
1428 CDEBUG(D_INFO, "For 1.8 interoperability, "
1429 "set this index to '0'\n");
1435 #if defined(HAVE_SERVER_SUPPORT) && defined(__KERNEL__)
1436 /* newer MDS replaces LOV/OSC with LOD/OSP */
1438 char *typename = lustre_cfg_string(lcfg, 1);
1440 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1441 strcmp(typename, LUSTRE_LOV_NAME) == 0) &&
1442 IS_MDT(s2lsi(clli->cfg_sb))) {
1444 "For 2.x interoperability, rename obd "
1445 "type from lov to lod (%s)\n",
1446 s2lsi(clli->cfg_sb)->lsi_svname);
1447 strcpy(typename, LUSTRE_LOD_NAME);
1449 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1450 strcmp(typename, LUSTRE_OSC_NAME) == 0) &&
1451 IS_MDT(s2lsi(clli->cfg_sb))) {
1453 "For 2.x interoperability, rename obd "
1454 "type from osc to osp (%s)\n",
1455 s2lsi(clli->cfg_sb)->lsi_svname);
1456 strcpy(typename, LUSTRE_OSP_NAME);
1461 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1462 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1463 /* Add inactive instead */
1464 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1466 lustre_cfg_bufs_init(&bufs, lcfg);
1468 if (clli && clli->cfg_instance &&
1469 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1471 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1472 sizeof(clli->cfg_instance) * 2 + 4;
1473 OBD_ALLOC(inst_name, inst_len);
1474 if (inst_name == NULL)
1475 GOTO(out, rc = -ENOMEM);
1476 sprintf(inst_name, "%s-%p",
1477 lustre_cfg_string(lcfg, 0),
1478 clli->cfg_instance);
1479 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1480 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1481 lcfg->lcfg_command, inst_name);
1484 /* we override the llog's uuid for clients, to insure they
1486 if (clli && clli->cfg_instance != NULL &&
1487 lcfg->lcfg_command == LCFG_ATTACH) {
1488 lustre_cfg_bufs_set_string(&bufs, 2,
1489 clli->cfg_uuid.uuid);
1492 * sptlrpc config record, we expect 2 data segments:
1493 * [0]: fs_name/target_name,
1495 * moving them to index [1] and [2], and insert MGC's
1496 * obdname at index [0].
1498 if (clli && clli->cfg_instance == NULL &&
1499 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1500 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1501 bufs.lcfg_buflen[1]);
1502 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1503 bufs.lcfg_buflen[0]);
1504 lustre_cfg_bufs_set_string(&bufs, 0,
1508 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1510 lcfg_new->lcfg_num = lcfg->lcfg_num;
1511 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1513 /* XXX Hack to try to remain binary compatible with
1514 * pre-newconfig logs */
1515 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1516 (lcfg->lcfg_nid >> 32) == 0) {
1517 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1519 lcfg_new->lcfg_nid =
1520 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1521 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1522 lcfg->lcfg_nal, addr,
1523 libcfs_nid2str(lcfg_new->lcfg_nid));
1525 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1528 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1530 rc = class_process_config(lcfg_new);
1531 lustre_cfg_free(lcfg_new);
1534 OBD_FREE(inst_name, inst_len);
1538 CERROR("Unknown llog record type %#x encountered\n",
1544 CERROR("%s: cfg command failed: rc = %d\n",
1545 handle->lgh_ctxt->loc_obd->obd_name, rc);
1546 class_config_dump_handler(NULL, handle, rec, data);
1551 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1552 char *name, struct config_llog_instance *cfg)
1554 struct llog_process_cat_data cd = {0, 0};
1555 struct llog_handle *llh;
1560 CDEBUG(D_INFO, "looking up llog %s\n", name);
1561 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1565 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1567 GOTO(parse_out, rc);
1569 /* continue processing from where we last stopped to end-of-log */
1571 cd.lpcd_first_idx = cfg->cfg_last_idx;
1572 cd.lpcd_last_idx = 0;
1574 rc = llog_process(env, llh, class_config_llog_handler, cfg, &cd);
1576 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1577 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1579 cfg->cfg_last_idx = cd.lpcd_last_idx;
1582 llog_close(env, llh);
1585 EXPORT_SYMBOL(class_config_parse_llog);
1588 * parse config record and output dump in supplied buffer.
1589 * This is separated from class_config_dump_handler() to use
1590 * for ioctl needs as well
1592 int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
1594 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1596 char *end = buf + size;
1601 LASSERT(rec->lrh_type == OBD_CFG_REC);
1602 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1606 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
1607 if (lcfg->lcfg_flags)
1608 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1612 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
1615 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1616 libcfs_nid2str(lcfg->lcfg_nid),
1619 if (lcfg->lcfg_command == LCFG_MARKER) {
1620 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1622 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1623 marker->cm_step, marker->cm_flags,
1624 marker->cm_tgtname, marker->cm_comment);
1628 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1629 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1630 lustre_cfg_string(lcfg, i));
1633 /* return consumed bytes */
1638 int class_config_dump_handler(const struct lu_env *env,
1639 struct llog_handle *handle,
1640 struct llog_rec_hdr *rec, void *data)
1647 OBD_ALLOC(outstr, 256);
1651 if (rec->lrh_type == OBD_CFG_REC) {
1652 class_config_parse_rec(rec, outstr, 256);
1653 LCONSOLE(D_WARNING, " %s\n", outstr);
1655 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1659 OBD_FREE(outstr, 256);
1663 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1664 char *name, struct config_llog_instance *cfg)
1666 struct llog_handle *llh;
1671 LCONSOLE_INFO("Dumping config log %s\n", name);
1673 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1677 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1679 GOTO(parse_out, rc);
1681 rc = llog_process(env, llh, class_config_dump_handler, cfg, NULL);
1683 llog_close(env, llh);
1685 LCONSOLE_INFO("End config log %s\n", name);
1688 EXPORT_SYMBOL(class_config_dump_llog);
1690 /** Call class_cleanup and class_detach.
1691 * "Manual" only in the sense that we're faking lcfg commands.
1693 int class_manual_cleanup(struct obd_device *obd)
1696 struct lustre_cfg *lcfg;
1697 struct lustre_cfg_bufs bufs;
1702 CERROR("empty cleanup\n");
1711 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1712 obd->obd_name, flags);
1714 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1715 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1716 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1720 rc = class_process_config(lcfg);
1722 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1726 /* the lcfg is almost the same for both ops */
1727 lcfg->lcfg_command = LCFG_DETACH;
1728 rc = class_process_config(lcfg);
1730 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1732 lustre_cfg_free(lcfg);
1735 EXPORT_SYMBOL(class_manual_cleanup);
1738 * uuid<->export lustre hash operations
1742 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1744 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1745 sizeof(((struct obd_uuid *)key)->uuid), mask);
1749 uuid_key(cfs_hlist_node_t *hnode)
1751 struct obd_export *exp;
1753 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1755 return &exp->exp_client_uuid;
1759 * NOTE: It is impossible to find an export that is in failed
1760 * state with this function
1763 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1765 struct obd_export *exp;
1768 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1770 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1775 uuid_export_object(cfs_hlist_node_t *hnode)
1777 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1781 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1783 struct obd_export *exp;
1785 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1786 class_export_get(exp);
1790 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1792 struct obd_export *exp;
1794 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1795 class_export_put(exp);
1798 static cfs_hash_ops_t uuid_hash_ops = {
1799 .hs_hash = uuid_hash,
1801 .hs_keycmp = uuid_keycmp,
1802 .hs_object = uuid_export_object,
1803 .hs_get = uuid_export_get,
1804 .hs_put_locked = uuid_export_put_locked,
1809 * nid<->export hash operations
1813 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1815 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1819 nid_key(cfs_hlist_node_t *hnode)
1821 struct obd_export *exp;
1823 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1825 RETURN(&exp->exp_connection->c_peer.nid);
1829 * NOTE: It is impossible to find an export that is in failed
1830 * state with this function
1833 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1835 struct obd_export *exp;
1838 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1840 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1845 nid_export_object(cfs_hlist_node_t *hnode)
1847 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1851 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1853 struct obd_export *exp;
1855 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1856 class_export_get(exp);
1860 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1862 struct obd_export *exp;
1864 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1865 class_export_put(exp);
1868 static cfs_hash_ops_t nid_hash_ops = {
1869 .hs_hash = nid_hash,
1871 .hs_keycmp = nid_kepcmp,
1872 .hs_object = nid_export_object,
1873 .hs_get = nid_export_get,
1874 .hs_put_locked = nid_export_put_locked,
1879 * nid<->nidstats hash operations
1883 nidstats_key(cfs_hlist_node_t *hnode)
1885 struct nid_stat *ns;
1887 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1893 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1895 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1899 nidstats_object(cfs_hlist_node_t *hnode)
1901 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1905 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1907 struct nid_stat *ns;
1909 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1914 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1916 struct nid_stat *ns;
1918 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1922 static cfs_hash_ops_t nid_stat_hash_ops = {
1923 .hs_hash = nid_hash,
1924 .hs_key = nidstats_key,
1925 .hs_keycmp = nidstats_keycmp,
1926 .hs_object = nidstats_object,
1927 .hs_get = nidstats_get,
1928 .hs_put_locked = nidstats_put_locked,