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, 2013, 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
43 #include <obd_class.h>
44 #include <linux/string.h>
45 #include <lustre_disk.h>
47 #include <liblustre.h>
49 #include <obd_class.h>
52 #include <lustre_ioctl.h>
53 #include <lustre_log.h>
54 #include <lprocfs_status.h>
55 #include <lustre_param.h>
57 #include "llog_internal.h"
59 static cfs_hash_ops_t uuid_hash_ops;
60 static cfs_hash_ops_t nid_hash_ops;
61 static cfs_hash_ops_t nid_stat_hash_ops;
63 /*********** string parsing utils *********/
65 /* returns 0 if we find this key in the buffer, else 1 */
66 int class_find_param(char *buf, char *key, char **valp)
73 if ((ptr = strstr(buf, key)) == NULL)
77 *valp = ptr + strlen(key);
81 EXPORT_SYMBOL(class_find_param);
84 * Check whether the proc parameter \a param is an old parameter or not from
85 * the array \a ptr which contains the mapping from old parameters to new ones.
86 * If it's an old one, then return the pointer to the cfg_interop_param struc-
87 * ture which contains both the old and new parameters.
89 * \param param proc parameter
90 * \param ptr an array which contains the mapping from
91 * old parameters to new ones
93 * \retval valid-pointer pointer to the cfg_interop_param structure
94 * which contains the old and new parameters
95 * \retval NULL \a param or \a ptr is NULL,
96 * or \a param is not an old parameter
98 struct cfg_interop_param *class_find_old_param(const char *param,
99 struct cfg_interop_param *ptr)
104 if (param == NULL || ptr == NULL)
107 value = strchr(param, '=');
109 name_len = strlen(param);
111 name_len = value - param;
113 while (ptr->old_param != NULL) {
114 if (strncmp(param, ptr->old_param, name_len) == 0 &&
115 name_len == strlen(ptr->old_param))
122 EXPORT_SYMBOL(class_find_old_param);
125 * Finds a parameter in \a params and copies it to \a copy.
127 * Leading spaces are skipped. Next space or end of string is the
128 * parameter terminator with the exception that spaces inside single or double
129 * quotes get included into a parameter. The parameter is copied into \a copy
130 * which has to be allocated big enough by a caller, quotes are stripped in
131 * the copy and the copy is terminated by 0.
133 * On return \a params is set to next parameter or to NULL if last
134 * parameter is returned.
136 * \retval 0 if parameter is returned in \a copy
137 * \retval 1 otherwise
138 * \retval -EINVAL if unbalanced quota is found
140 int class_get_next_param(char **params, char *copy)
155 q1 = strpbrk(str, " '\"");
158 memcpy(copy, str, len);
165 memcpy(copy, str, len);
171 memcpy(copy, str, len);
174 /* search for the matching closing quote */
176 q2 = strchr(str, *q1);
178 CERROR("Unbalanced quota in parameters: \"%s\"\n",
183 memcpy(copy, str, len);
189 EXPORT_SYMBOL(class_get_next_param);
191 /* returns 0 if this is the first key in the buffer, else 1.
192 valp points to first char after key. */
193 int class_match_param(char *buf, char *key, char **valp)
198 if (memcmp(buf, key, strlen(key)) != 0)
202 *valp = buf + strlen(key);
206 EXPORT_SYMBOL(class_match_param);
208 static int parse_nid(char *buf, void *value, int quiet)
210 lnet_nid_t *nid = (lnet_nid_t *)value;
212 *nid = libcfs_str2nid(buf);
213 if (*nid != LNET_NID_ANY)
217 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
221 static int parse_net(char *buf, void *value)
223 __u32 *net = (__u32 *)value;
225 *net = libcfs_str2net(buf);
226 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
238 endh is set to next separator */
239 static int class_parse_value(char *buf, int opc, void *value, char **endh,
248 while (*buf == ',' || *buf == ':')
250 if (*buf == ' ' || *buf == '/' || *buf == '\0')
253 /* nid separators or end of nids */
254 endp = strpbrk(buf, ",: /");
256 endp = buf + strlen(buf);
263 case CLASS_PARSE_NID:
264 rc = parse_nid(buf, value, quiet);
266 case CLASS_PARSE_NET:
267 rc = parse_net(buf, value);
278 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
280 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
282 EXPORT_SYMBOL(class_parse_nid);
284 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
286 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
288 EXPORT_SYMBOL(class_parse_nid_quiet);
290 int class_parse_net(char *buf, __u32 *net, char **endh)
292 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
294 EXPORT_SYMBOL(class_parse_net);
296 /* 1 param contains key and match
297 * 0 param contains key and not match
298 * -1 param does not contain key
300 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
305 while (class_find_param(buf, key, &buf) == 0) {
306 /* please restrict to the nids pertaining to
307 * the specified nids */
308 while (class_parse_nid(buf, &tmp, &buf) == 0) {
316 EXPORT_SYMBOL(class_match_nid);
318 int class_match_net(char *buf, char *key, __u32 net)
323 while (class_find_param(buf, key, &buf) == 0) {
324 /* please restrict to the nids pertaining to
325 * the specified networks */
326 while (class_parse_net(buf, &tmp, &buf) == 0) {
334 EXPORT_SYMBOL(class_match_net);
336 /********************** class fns **********************/
339 * Create a new obd device and set the type, name and uuid. If successful,
340 * the new device can be accessed by either name or uuid.
342 int class_attach(struct lustre_cfg *lcfg)
344 struct obd_device *obd = NULL;
345 char *typename, *name, *uuid;
349 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
350 CERROR("No type passed!\n");
353 typename = lustre_cfg_string(lcfg, 1);
355 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
356 CERROR("No name passed!\n");
359 name = lustre_cfg_string(lcfg, 0);
361 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
362 CERROR("No UUID passed!\n");
365 uuid = lustre_cfg_string(lcfg, 2);
367 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
368 MKSTR(typename), MKSTR(name), MKSTR(uuid));
370 obd = class_newdev(typename, name);
372 /* Already exists or out of obds */
375 CERROR("Cannot create device %s of type %s : %d\n",
379 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
381 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
382 "obd %p obd_magic %08X != %08X\n",
383 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
384 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
385 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
387 rwlock_init(&obd->obd_pool_lock);
388 obd->obd_pool_limit = 0;
389 obd->obd_pool_slv = 0;
391 INIT_LIST_HEAD(&obd->obd_exports);
392 INIT_LIST_HEAD(&obd->obd_unlinked_exports);
393 INIT_LIST_HEAD(&obd->obd_delayed_exports);
394 INIT_LIST_HEAD(&obd->obd_exports_timed);
395 INIT_LIST_HEAD(&obd->obd_nid_stats);
396 spin_lock_init(&obd->obd_nid_lock);
397 spin_lock_init(&obd->obd_dev_lock);
398 mutex_init(&obd->obd_dev_mutex);
399 spin_lock_init(&obd->obd_osfs_lock);
400 /* obd->obd_osfs_age must be set to a value in the distant
401 * past to guarantee a fresh statfs is fetched on mount. */
402 obd->obd_osfs_age = cfs_time_shift_64(-1000);
404 /* XXX belongs in setup not attach */
405 init_rwsem(&obd->obd_observer_link_sem);
407 cfs_init_timer(&obd->obd_recovery_timer);
408 spin_lock_init(&obd->obd_recovery_task_lock);
409 init_waitqueue_head(&obd->obd_next_transno_waitq);
410 init_waitqueue_head(&obd->obd_evict_inprogress_waitq);
411 INIT_LIST_HEAD(&obd->obd_req_replay_queue);
412 INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
413 INIT_LIST_HEAD(&obd->obd_final_req_queue);
414 INIT_LIST_HEAD(&obd->obd_evict_list);
415 INIT_LIST_HEAD(&obd->obd_lwp_list);
417 llog_group_init(&obd->obd_olg);
419 obd->obd_conn_inprogress = 0;
422 if (len >= sizeof(obd->obd_uuid)) {
423 CERROR("uuid must be < %d bytes long\n",
424 (int)sizeof(obd->obd_uuid));
425 GOTO(out, rc = -EINVAL);
427 memcpy(obd->obd_uuid.uuid, uuid, len);
429 /* Detach drops this */
430 spin_lock(&obd->obd_dev_lock);
431 atomic_set(&obd->obd_refcount, 1);
432 spin_unlock(&obd->obd_dev_lock);
433 lu_ref_init(&obd->obd_reference);
434 lu_ref_add(&obd->obd_reference, "attach", obd);
436 obd->obd_attached = 1;
437 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
438 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
442 class_release_dev(obd);
446 EXPORT_SYMBOL(class_attach);
448 /** Create hashes, self-export, and call type-specific setup.
449 * Setup is effectively the "start this obd" call.
451 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
454 struct obd_export *exp;
457 LASSERT(obd != NULL);
458 LASSERTF(obd == class_num2obd(obd->obd_minor),
459 "obd %p != obd_devs[%d] %p\n",
460 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
461 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
462 "obd %p obd_magic %08x != %08x\n",
463 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
465 /* have we attached a type to this device? */
466 if (!obd->obd_attached) {
467 CERROR("Device %d not attached\n", obd->obd_minor);
471 if (obd->obd_set_up) {
472 CERROR("Device %d already setup (type %s)\n",
473 obd->obd_minor, obd->obd_type->typ_name);
477 /* is someone else setting us up right now? (attach inits spinlock) */
478 spin_lock(&obd->obd_dev_lock);
479 if (obd->obd_starting) {
480 spin_unlock(&obd->obd_dev_lock);
481 CERROR("Device %d setup in progress (type %s)\n",
482 obd->obd_minor, obd->obd_type->typ_name);
485 /* just leave this on forever. I can't use obd_set_up here because
486 other fns check that status, and we're not actually set up yet. */
487 obd->obd_starting = 1;
488 obd->obd_uuid_hash = NULL;
489 obd->obd_nid_hash = NULL;
490 obd->obd_nid_stats_hash = NULL;
491 spin_unlock(&obd->obd_dev_lock);
493 /* create an uuid-export lustre hash */
494 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
497 HASH_UUID_BKT_BITS, 0,
500 &uuid_hash_ops, CFS_HASH_DEFAULT);
501 if (!obd->obd_uuid_hash)
502 GOTO(err_hash, err = -ENOMEM);
504 /* create a nid-export lustre hash */
505 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
508 HASH_NID_BKT_BITS, 0,
511 &nid_hash_ops, CFS_HASH_DEFAULT);
512 if (!obd->obd_nid_hash)
513 GOTO(err_hash, err = -ENOMEM);
515 /* create a nid-stats lustre hash */
516 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
517 HASH_NID_STATS_CUR_BITS,
518 HASH_NID_STATS_MAX_BITS,
519 HASH_NID_STATS_BKT_BITS, 0,
522 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
523 if (!obd->obd_nid_stats_hash)
524 GOTO(err_hash, err = -ENOMEM);
526 exp = class_new_export(obd, &obd->obd_uuid);
528 GOTO(err_hash, err = PTR_ERR(exp));
530 obd->obd_self_export = exp;
531 list_del_init(&exp->exp_obd_chain_timed);
532 class_export_put(exp);
534 err = obd_setup(obd, lcfg);
540 spin_lock(&obd->obd_dev_lock);
541 /* cleanup drops this */
542 class_incref(obd, "setup", obd);
543 spin_unlock(&obd->obd_dev_lock);
545 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
546 obd->obd_name, obd->obd_uuid.uuid);
550 if (obd->obd_self_export) {
551 class_unlink_export(obd->obd_self_export);
552 obd->obd_self_export = NULL;
555 if (obd->obd_uuid_hash) {
556 cfs_hash_putref(obd->obd_uuid_hash);
557 obd->obd_uuid_hash = NULL;
559 if (obd->obd_nid_hash) {
560 cfs_hash_putref(obd->obd_nid_hash);
561 obd->obd_nid_hash = NULL;
563 if (obd->obd_nid_stats_hash) {
564 cfs_hash_putref(obd->obd_nid_stats_hash);
565 obd->obd_nid_stats_hash = NULL;
567 obd->obd_starting = 0;
568 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
571 EXPORT_SYMBOL(class_setup);
573 /** We have finished using this obd and are ready to destroy it.
574 * There can be no more references to this obd.
576 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
580 if (obd->obd_set_up) {
581 CERROR("OBD device %d still set up\n", obd->obd_minor);
585 spin_lock(&obd->obd_dev_lock);
586 if (!obd->obd_attached) {
587 spin_unlock(&obd->obd_dev_lock);
588 CERROR("OBD device %d not attached\n", obd->obd_minor);
591 obd->obd_attached = 0;
592 spin_unlock(&obd->obd_dev_lock);
594 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
595 obd->obd_name, obd->obd_uuid.uuid);
597 class_decref(obd, "attach", obd);
600 EXPORT_SYMBOL(class_detach);
602 /** Start shutting down the obd. There may be in-progess ops when
603 * this is called. We tell them to start shutting down with a call
604 * to class_disconnect_exports().
606 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
612 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
614 if (!obd->obd_set_up) {
615 CERROR("Device %d not setup\n", obd->obd_minor);
619 spin_lock(&obd->obd_dev_lock);
620 if (obd->obd_stopping) {
621 spin_unlock(&obd->obd_dev_lock);
622 CERROR("OBD %d already stopping\n", obd->obd_minor);
625 /* Leave this on forever */
626 obd->obd_stopping = 1;
627 spin_unlock(&obd->obd_dev_lock);
629 /* wait for already-arrived-connections to finish. */
630 while (obd->obd_conn_inprogress > 0)
634 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
635 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
641 LCONSOLE_WARN("Failing over %s\n",
644 obd->obd_no_transno = 1;
645 obd->obd_no_recov = 1;
646 if (OBP(obd, iocontrol)) {
647 obd_iocontrol(OBD_IOC_SYNC,
648 obd->obd_self_export,
653 CERROR("Unrecognised flag '%c'\n", *flag);
657 LASSERT(obd->obd_self_export);
659 /* The three references that should be remaining are the
660 * obd_self_export and the attach and setup references. */
661 if (atomic_read(&obd->obd_refcount) > 3) {
662 /* refcounf - 3 might be the number of real exports
663 (excluding self export). But class_incref is called
664 by other things as well, so don't count on it. */
665 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
666 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
667 dump_exports(obd, 0);
668 class_disconnect_exports(obd);
671 /* Precleanup, we must make sure all exports get destroyed. */
672 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
674 CERROR("Precleanup %s returned %d\n",
677 /* destroy an uuid-export hash body */
678 if (obd->obd_uuid_hash) {
679 cfs_hash_putref(obd->obd_uuid_hash);
680 obd->obd_uuid_hash = NULL;
683 /* destroy a nid-export hash body */
684 if (obd->obd_nid_hash) {
685 cfs_hash_putref(obd->obd_nid_hash);
686 obd->obd_nid_hash = NULL;
689 /* destroy a nid-stats hash body */
690 if (obd->obd_nid_stats_hash) {
691 cfs_hash_putref(obd->obd_nid_stats_hash);
692 obd->obd_nid_stats_hash = NULL;
695 class_decref(obd, "setup", obd);
700 EXPORT_SYMBOL(class_cleanup);
702 struct obd_device *class_incref(struct obd_device *obd,
703 const char *scope, const void *source)
705 lu_ref_add_atomic(&obd->obd_reference, scope, source);
706 atomic_inc(&obd->obd_refcount);
707 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
708 atomic_read(&obd->obd_refcount));
712 EXPORT_SYMBOL(class_incref);
714 void class_decref(struct obd_device *obd, const char *scope, const void *source)
719 spin_lock(&obd->obd_dev_lock);
720 atomic_dec(&obd->obd_refcount);
721 refs = atomic_read(&obd->obd_refcount);
722 spin_unlock(&obd->obd_dev_lock);
723 lu_ref_del(&obd->obd_reference, scope, source);
725 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
727 if ((refs == 1) && obd->obd_stopping) {
728 /* All exports have been destroyed; there should
729 be no more in-progress ops by this point.*/
731 spin_lock(&obd->obd_self_export->exp_lock);
732 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
733 spin_unlock(&obd->obd_self_export->exp_lock);
735 /* note that we'll recurse into class_decref again */
736 class_unlink_export(obd->obd_self_export);
741 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
742 obd->obd_name, obd->obd_uuid.uuid);
743 LASSERT(!obd->obd_attached);
744 if (obd->obd_stopping) {
745 /* If we're not stopping, we were never set up */
746 err = obd_cleanup(obd);
748 CERROR("Cleanup %s returned %d\n",
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;
767 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
768 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
769 CERROR("invalid conn_uuid\n");
772 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
773 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
774 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
775 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
776 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
777 CERROR("can't add connection on non-client dev\n");
781 imp = obd->u.cli.cl_import;
783 CERROR("try to add conn on immature client dev\n");
787 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
788 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
792 EXPORT_SYMBOL(class_add_conn);
794 /** Remove a failover nid location.
796 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
798 struct obd_import *imp;
799 struct obd_uuid uuid;
803 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
804 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
805 CERROR("invalid conn_uuid\n");
808 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
809 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
810 CERROR("can't del connection on non-client dev\n");
814 imp = obd->u.cli.cl_import;
816 CERROR("try to del conn on immature client dev\n");
820 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
821 rc = obd_del_conn(imp, &uuid);
826 struct list_head lustre_profile_list =
827 LIST_HEAD_INIT(lustre_profile_list);
829 struct lustre_profile *class_get_profile(const char * prof)
831 struct lustre_profile *lprof;
834 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
835 if (!strcmp(lprof->lp_profile, prof)) {
841 EXPORT_SYMBOL(class_get_profile);
843 /** Create a named "profile".
844 * This defines the mdc and osc names to use for a client.
845 * This also is used to define the lov to be used by a mdt.
847 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
848 int mdclen, char *mdc)
850 struct lustre_profile *lprof;
854 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
856 OBD_ALLOC(lprof, sizeof(*lprof));
859 INIT_LIST_HEAD(&lprof->lp_list);
861 LASSERT(proflen == (strlen(prof) + 1));
862 OBD_ALLOC(lprof->lp_profile, proflen);
863 if (lprof->lp_profile == NULL)
864 GOTO(out, err = -ENOMEM);
865 memcpy(lprof->lp_profile, prof, proflen);
867 LASSERT(osclen == (strlen(osc) + 1));
868 OBD_ALLOC(lprof->lp_dt, osclen);
869 if (lprof->lp_dt == NULL)
870 GOTO(out, err = -ENOMEM);
871 memcpy(lprof->lp_dt, osc, osclen);
874 LASSERT(mdclen == (strlen(mdc) + 1));
875 OBD_ALLOC(lprof->lp_md, mdclen);
876 if (lprof->lp_md == NULL)
877 GOTO(out, err = -ENOMEM);
878 memcpy(lprof->lp_md, mdc, mdclen);
881 list_add(&lprof->lp_list, &lustre_profile_list);
886 OBD_FREE(lprof->lp_md, mdclen);
888 OBD_FREE(lprof->lp_dt, osclen);
889 if (lprof->lp_profile)
890 OBD_FREE(lprof->lp_profile, proflen);
891 OBD_FREE(lprof, sizeof(*lprof));
895 void class_del_profile(const char *prof)
897 struct lustre_profile *lprof;
900 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
902 lprof = class_get_profile(prof);
904 list_del(&lprof->lp_list);
905 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
906 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
908 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
909 OBD_FREE(lprof, sizeof *lprof);
913 EXPORT_SYMBOL(class_del_profile);
916 void class_del_profiles(void)
918 struct lustre_profile *lprof, *n;
921 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
922 list_del(&lprof->lp_list);
923 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
924 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
926 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
927 OBD_FREE(lprof, sizeof *lprof);
931 EXPORT_SYMBOL(class_del_profiles);
933 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
936 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
938 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
940 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
942 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
943 at_early_margin = val;
944 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
946 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
947 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
948 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
952 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
957 /* We can't call ll_process_config or lquota_process_config directly because
958 * it lives in a module that must be loaded after this one. */
959 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
960 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
962 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
964 client_process_config = cpc;
966 EXPORT_SYMBOL(lustre_register_client_process_config);
969 * Rename the proc parameter in \a cfg with a new name \a new_name.
971 * \param cfg config structure which contains the proc parameter
972 * \param new_name new name of the proc parameter
974 * \retval valid-pointer pointer to the newly-allocated config structure
975 * which contains the renamed proc parameter
976 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
977 * not contain a proc parameter
978 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
980 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
981 const char *new_name)
983 struct lustre_cfg_bufs *bufs = NULL;
984 struct lustre_cfg *new_cfg = NULL;
986 char *new_param = NULL;
992 if (cfg == NULL || new_name == NULL)
993 RETURN(ERR_PTR(-EINVAL));
995 param = lustre_cfg_string(cfg, 1);
997 RETURN(ERR_PTR(-EINVAL));
999 value = strchr(param, '=');
1001 name_len = strlen(param);
1003 name_len = value - param;
1005 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1007 OBD_ALLOC(new_param, new_len);
1008 if (new_param == NULL)
1009 RETURN(ERR_PTR(-ENOMEM));
1011 strcpy(new_param, new_name);
1013 strcat(new_param, value);
1015 OBD_ALLOC_PTR(bufs);
1017 OBD_FREE(new_param, new_len);
1018 RETURN(ERR_PTR(-ENOMEM));
1021 lustre_cfg_bufs_reset(bufs, NULL);
1022 lustre_cfg_bufs_init(bufs, cfg);
1023 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1025 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
1027 OBD_FREE(new_param, new_len);
1029 if (new_cfg == NULL)
1030 RETURN(ERR_PTR(-ENOMEM));
1032 new_cfg->lcfg_num = cfg->lcfg_num;
1033 new_cfg->lcfg_flags = cfg->lcfg_flags;
1034 new_cfg->lcfg_nid = cfg->lcfg_nid;
1035 new_cfg->lcfg_nal = cfg->lcfg_nal;
1039 EXPORT_SYMBOL(lustre_cfg_rename);
1041 static int process_param2_config(struct lustre_cfg *lcfg)
1043 char *param = lustre_cfg_string(lcfg, 1);
1044 char *upcall = lustre_cfg_string(lcfg, 2);
1046 [0] = "/usr/sbin/lctl",
1051 struct timeval start;
1056 /* Add upcall processing here. Now only lctl is supported */
1057 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1058 CERROR("Unsupported upcall %s\n", upcall);
1062 do_gettimeofday(&start);
1063 rc = call_usermodehelper(argv[0], argv, NULL, 0);
1064 do_gettimeofday(&end);
1067 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1068 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1069 cfs_timeval_sub(&end, &start, NULL));
1071 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1072 argv[0], argv[1], argv[2],
1073 cfs_timeval_sub(&end, &start, NULL));
1080 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1082 quota_process_config = qpc;
1084 EXPORT_SYMBOL(lustre_register_quota_process_config);
1086 /** Process configuration commands given in lustre_cfg form.
1087 * These may come from direct calls (e.g. class_manual_cleanup)
1088 * or processing the config llog, or ioctl from lctl.
1090 int class_process_config(struct lustre_cfg *lcfg)
1092 struct obd_device *obd;
1095 LASSERT(lcfg && !IS_ERR(lcfg));
1096 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1098 /* Commands that don't need a device */
1099 switch(lcfg->lcfg_command) {
1101 err = class_attach(lcfg);
1104 case LCFG_ADD_UUID: {
1105 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1106 " (%s)\n", lustre_cfg_string(lcfg, 1),
1107 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1109 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1112 case LCFG_DEL_UUID: {
1113 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1114 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1115 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1117 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1120 case LCFG_MOUNTOPT: {
1121 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1122 lustre_cfg_string(lcfg, 1),
1123 lustre_cfg_string(lcfg, 2),
1124 lustre_cfg_string(lcfg, 3));
1125 /* set these mount options somewhere, so ll_fill_super
1127 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1128 lustre_cfg_string(lcfg, 1),
1129 LUSTRE_CFG_BUFLEN(lcfg, 2),
1130 lustre_cfg_string(lcfg, 2),
1131 LUSTRE_CFG_BUFLEN(lcfg, 3),
1132 lustre_cfg_string(lcfg, 3));
1135 case LCFG_DEL_MOUNTOPT: {
1136 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1137 lustre_cfg_string(lcfg, 1));
1138 class_del_profile(lustre_cfg_string(lcfg, 1));
1141 case LCFG_SET_TIMEOUT: {
1142 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1143 obd_timeout, lcfg->lcfg_num);
1144 obd_timeout = max(lcfg->lcfg_num, 1U);
1145 obd_timeout_set = 1;
1148 case LCFG_SET_LDLM_TIMEOUT: {
1149 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1150 ldlm_timeout, lcfg->lcfg_num);
1151 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1152 if (ldlm_timeout >= obd_timeout)
1153 ldlm_timeout = max(obd_timeout / 3, 1U);
1154 ldlm_timeout_set = 1;
1157 case LCFG_SET_UPCALL: {
1158 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1159 /* COMPAT_146 Don't fail on old configs */
1163 struct cfg_marker *marker;
1164 marker = lustre_cfg_buf(lcfg, 1);
1165 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1166 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1171 /* llite has no obd */
1172 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1173 PARAM_LLITE, 0) == 0) &&
1174 client_process_config) {
1175 err = (*client_process_config)(lcfg);
1177 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1178 PARAM_SYS, &tmp) == 0)) {
1179 /* Global param settings */
1180 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
1182 * Client or server should not fail to mount if
1183 * it hits an unknown configuration parameter.
1186 CWARN("Ignoring unknown param %s\n", tmp);
1189 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1190 PARAM_QUOTA, &tmp) == 0) &&
1191 quota_process_config) {
1192 err = (*quota_process_config)(lcfg);
1198 case LCFG_SET_PARAM: {
1199 err = process_param2_config(lcfg);
1203 /* Commands that require a device */
1204 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1206 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1207 CERROR("this lcfg command requires a device name\n");
1209 CERROR("no device for: %s\n",
1210 lustre_cfg_string(lcfg, 0));
1212 GOTO(out, err = -EINVAL);
1215 switch(lcfg->lcfg_command) {
1217 err = class_setup(obd, lcfg);
1221 err = class_detach(obd, lcfg);
1224 case LCFG_CLEANUP: {
1225 err = class_cleanup(obd, lcfg);
1228 case LCFG_ADD_CONN: {
1229 err = class_add_conn(obd, lcfg);
1232 case LCFG_DEL_CONN: {
1233 err = class_del_conn(obd, lcfg);
1236 case LCFG_POOL_NEW: {
1237 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1240 case LCFG_POOL_ADD: {
1241 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1242 lustre_cfg_string(lcfg, 3));
1245 case LCFG_POOL_REM: {
1246 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1247 lustre_cfg_string(lcfg, 3));
1250 case LCFG_POOL_DEL: {
1251 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1255 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1261 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1262 CWARN("Ignoring error %d on optional command %#x\n", err,
1263 lcfg->lcfg_command);
1268 EXPORT_SYMBOL(class_process_config);
1270 #ifndef HAVE_ONLY_PROCFS_SEQ
1271 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1272 struct lustre_cfg *lcfg, void *data)
1275 struct lprocfs_vars *var;
1277 int i, keylen, vallen;
1278 int matched = 0, j = 0;
1283 if (lcfg->lcfg_command != LCFG_PARAM) {
1284 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1288 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1289 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1290 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1291 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1292 key = lustre_cfg_buf(lcfg, i);
1293 /* Strip off prefix */
1294 if (class_match_param(key, prefix, &key))
1295 /* If the prefix doesn't match, return error so we
1296 * can pass it down the stack */
1298 sval = strchr(key, '=');
1299 if (!sval || (*(sval + 1) == 0)) {
1300 CERROR("Can't parse param %s (missing '=')\n", key);
1301 /* rc = -EINVAL; continue parsing other params */
1304 keylen = sval - key;
1306 vallen = strlen(sval);
1309 /* Search proc entries */
1310 while (lvars[j].name) {
1312 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1313 keylen == strlen(var->name)) {
1317 if (var->write_fptr) {
1321 rc = (var->write_fptr)(NULL, sval,
1330 CERROR("%.*s: %s unknown param %s\n",
1331 (int)strlen(prefix) - 1, prefix,
1332 (char *)lustre_cfg_string(lcfg, 0), key);
1333 /* rc = -EINVAL; continue parsing other params */
1335 } else if (rc < 0) {
1336 CERROR("%s: error writing proc entry '%s': rc = %d\n",
1337 prefix, var->name, rc);
1340 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1341 lustre_cfg_string(lcfg, 0),
1342 (int)strlen(prefix) - 1, prefix,
1343 (int)(sval - key - 1), key, sval);
1353 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1354 /* Don't throw config error */
1358 EXPORT_SYMBOL(class_process_proc_param);
1361 int class_process_proc_seq_param(char *prefix, struct lprocfs_seq_vars *lvars,
1362 struct lustre_cfg *lcfg, void *data)
1365 struct lprocfs_seq_vars *var;
1366 struct file fakefile;
1367 struct seq_file fake_seqfile;
1369 int i, keylen, vallen;
1370 int matched = 0, j = 0;
1375 if (lcfg->lcfg_command != LCFG_PARAM) {
1376 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1380 /* fake a seq file so that var->fops->write can work... */
1381 fakefile.private_data = &fake_seqfile;
1382 fake_seqfile.private = data;
1383 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1384 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1385 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1386 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1387 key = lustre_cfg_buf(lcfg, i);
1388 /* Strip off prefix */
1389 if (class_match_param(key, prefix, &key))
1390 /* If the prefix doesn't match, return error so we
1391 * can pass it down the stack */
1393 sval = strchr(key, '=');
1394 if (!sval || (*(sval + 1) == 0)) {
1395 CERROR("Can't parse param %s (missing '=')\n", key);
1396 /* rc = -EINVAL; continue parsing other params */
1399 keylen = sval - key;
1401 vallen = strlen(sval);
1404 /* Search proc entries */
1405 while (lvars[j].name) {
1407 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1408 keylen == strlen(var->name)) {
1412 if (var->fops && var->fops->write) {
1416 rc = (var->fops->write)(&fakefile, sval,
1425 CERROR("%.*s: %s unknown param %s\n",
1426 (int)strlen(prefix) - 1, prefix,
1427 (char *)lustre_cfg_string(lcfg, 0), key);
1428 /* rc = -EINVAL; continue parsing other params */
1430 } else if (rc < 0) {
1431 CERROR("%s: error writing proc entry '%s': rc = %d\n",
1432 prefix, var->name, rc);
1435 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1436 lustre_cfg_string(lcfg, 0),
1437 (int)strlen(prefix) - 1, prefix,
1438 (int)(sval - key - 1), key, sval);
1448 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1449 /* Don't throw config error */
1453 EXPORT_SYMBOL(class_process_proc_seq_param);
1456 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1458 #define lustre_check_exclusion(a,b) 0
1462 * Supplemental functions for config logs, it allocates lustre_cfg
1463 * buffers plus initialized llog record header at the beginning.
1465 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1467 struct llog_cfg_rec *lcr;
1472 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1473 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1474 sizeof(struct llog_rec_tail);
1476 OBD_ALLOC(lcr, reclen);
1480 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1482 lcr->lcr_hdr.lrh_len = reclen;
1483 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1487 EXPORT_SYMBOL(lustre_cfg_rec_new);
1489 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1492 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1495 EXPORT_SYMBOL(lustre_cfg_rec_free);
1497 /** Parse a configuration llog, doing various manipulations on them
1498 * for various reasons, (modifications for compatibility, skip obsolete
1499 * records, change uuids, etc), then class_process_config() resulting
1502 int class_config_llog_handler(const struct lu_env *env,
1503 struct llog_handle *handle,
1504 struct llog_rec_hdr *rec, void *data)
1506 struct config_llog_instance *clli = data;
1507 int cfg_len = rec->lrh_len;
1508 char *cfg_buf = (char*) (rec + 1);
1512 //class_config_dump_handler(handle, rec, data);
1514 switch (rec->lrh_type) {
1516 struct lustre_cfg *lcfg, *lcfg_new;
1517 struct lustre_cfg_bufs bufs;
1518 char *inst_name = NULL;
1520 int inst = 0, swab = 0;
1522 lcfg = (struct lustre_cfg *)cfg_buf;
1523 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1524 lustre_swab_lustre_cfg(lcfg);
1528 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1532 /* Figure out config state info */
1533 if (lcfg->lcfg_command == LCFG_MARKER) {
1534 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1535 lustre_swab_cfg_marker(marker, swab,
1536 LUSTRE_CFG_BUFLEN(lcfg, 1));
1537 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1538 clli->cfg_flags, marker->cm_flags);
1539 if (marker->cm_flags & CM_START) {
1540 /* all previous flags off */
1541 clli->cfg_flags = CFG_F_MARKER;
1542 server_name2index(marker->cm_tgtname,
1543 &clli->cfg_lwp_idx, NULL);
1544 if (marker->cm_flags & CM_SKIP) {
1545 clli->cfg_flags |= CFG_F_SKIP;
1546 CDEBUG(D_CONFIG, "SKIP #%d\n",
1548 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1550 lustre_check_exclusion(clli->cfg_sb,
1551 marker->cm_tgtname))) {
1552 clli->cfg_flags |= CFG_F_EXCLUDE;
1553 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1556 } else if (marker->cm_flags & CM_END) {
1557 clli->cfg_flags = 0;
1560 /* A config command without a start marker before it is
1561 illegal (post 146) */
1562 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1563 !(clli->cfg_flags & CFG_F_MARKER) &&
1564 (lcfg->lcfg_command != LCFG_MARKER)) {
1565 CWARN("Config not inside markers, ignoring! "
1566 "(inst: %p, uuid: %s, flags: %#x)\n",
1568 clli->cfg_uuid.uuid, clli->cfg_flags);
1569 clli->cfg_flags |= CFG_F_SKIP;
1571 if (clli->cfg_flags & CFG_F_SKIP) {
1572 CDEBUG(D_CONFIG, "skipping %#x\n",
1575 /* No processing! */
1580 * For interoperability between 1.8 and 2.0,
1581 * rename "mds" obd device type to "mdt".
1584 char *typename = lustre_cfg_string(lcfg, 1);
1585 char *index = lustre_cfg_string(lcfg, 2);
1587 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1588 strcmp(typename, "mds") == 0)) {
1589 CWARN("For 1.8 interoperability, rename obd "
1590 "type from mds to mdt\n");
1593 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1594 strcmp(index, "type") == 0)) {
1595 CDEBUG(D_INFO, "For 1.8 interoperability, "
1596 "set this index to '0'\n");
1602 #if defined(HAVE_SERVER_SUPPORT) && defined(__KERNEL__)
1603 /* newer MDS replaces LOV/OSC with LOD/OSP */
1605 char *typename = lustre_cfg_string(lcfg, 1);
1607 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1608 strcmp(typename, LUSTRE_LOV_NAME) == 0) &&
1609 IS_MDT(s2lsi(clli->cfg_sb))) {
1611 "For 2.x interoperability, rename obd "
1612 "type from lov to lod (%s)\n",
1613 s2lsi(clli->cfg_sb)->lsi_svname);
1614 strcpy(typename, LUSTRE_LOD_NAME);
1616 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1617 strcmp(typename, LUSTRE_OSC_NAME) == 0) &&
1618 IS_MDT(s2lsi(clli->cfg_sb))) {
1620 "For 2.x interoperability, rename obd "
1621 "type from osc to osp (%s)\n",
1622 s2lsi(clli->cfg_sb)->lsi_svname);
1623 strcpy(typename, LUSTRE_OSP_NAME);
1628 if (clli->cfg_flags & CFG_F_EXCLUDE) {
1629 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1630 lcfg->lcfg_command);
1631 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1632 /* Add inactive instead */
1633 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1636 lustre_cfg_bufs_init(&bufs, lcfg);
1638 if (clli && clli->cfg_instance &&
1639 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1641 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1642 sizeof(clli->cfg_instance) * 2 + 4;
1643 OBD_ALLOC(inst_name, inst_len);
1644 if (inst_name == NULL)
1645 GOTO(out, rc = -ENOMEM);
1646 sprintf(inst_name, "%s-%p",
1647 lustre_cfg_string(lcfg, 0),
1648 clli->cfg_instance);
1649 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1650 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1651 lcfg->lcfg_command, inst_name);
1654 /* we override the llog's uuid for clients, to insure they
1656 if (clli && clli->cfg_instance != NULL &&
1657 lcfg->lcfg_command == LCFG_ATTACH) {
1658 lustre_cfg_bufs_set_string(&bufs, 2,
1659 clli->cfg_uuid.uuid);
1662 * sptlrpc config record, we expect 2 data segments:
1663 * [0]: fs_name/target_name,
1665 * moving them to index [1] and [2], and insert MGC's
1666 * obdname at index [0].
1668 if (clli && clli->cfg_instance == NULL &&
1669 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1670 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1671 bufs.lcfg_buflen[1]);
1672 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1673 bufs.lcfg_buflen[0]);
1674 lustre_cfg_bufs_set_string(&bufs, 0,
1678 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1679 if (lcfg_new == NULL)
1680 GOTO(out, rc = -ENOMEM);
1682 lcfg_new->lcfg_num = lcfg->lcfg_num;
1683 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1685 /* XXX Hack to try to remain binary compatible with
1686 * pre-newconfig logs */
1687 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1688 (lcfg->lcfg_nid >> 32) == 0) {
1689 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1691 lcfg_new->lcfg_nid =
1692 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1693 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1694 lcfg->lcfg_nal, addr,
1695 libcfs_nid2str(lcfg_new->lcfg_nid));
1697 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1700 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1702 rc = class_process_config(lcfg_new);
1703 lustre_cfg_free(lcfg_new);
1706 OBD_FREE(inst_name, inst_len);
1710 CERROR("Unknown llog record type %#x encountered\n",
1716 CERROR("%s: cfg command failed: rc = %d\n",
1717 handle->lgh_ctxt->loc_obd->obd_name, rc);
1718 class_config_dump_handler(NULL, handle, rec, data);
1722 EXPORT_SYMBOL(class_config_llog_handler);
1724 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1725 char *name, struct config_llog_instance *cfg)
1727 struct llog_process_cat_data cd = {0, 0};
1728 struct llog_handle *llh;
1733 CDEBUG(D_INFO, "looking up llog %s\n", name);
1734 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1738 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1740 GOTO(parse_out, rc);
1742 /* continue processing from where we last stopped to end-of-log */
1744 cd.lpcd_first_idx = cfg->cfg_last_idx;
1745 callback = cfg->cfg_callback;
1746 LASSERT(callback != NULL);
1748 callback = class_config_llog_handler;
1751 cd.lpcd_last_idx = 0;
1753 rc = llog_process(env, llh, callback, cfg, &cd);
1755 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1756 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1758 cfg->cfg_last_idx = cd.lpcd_last_idx;
1761 llog_close(env, llh);
1764 EXPORT_SYMBOL(class_config_parse_llog);
1766 struct lcfg_type_data {
1770 } lcfg_data_table[] = {
1771 { LCFG_ATTACH, "attach", { "type", "UUID", "3", "4" } },
1772 { LCFG_DETACH, "detach", { "1", "2", "3", "4" } },
1773 { LCFG_SETUP, "setup", { "UUID", "node", "options", "failout" } },
1774 { LCFG_CLEANUP, "cleanup", { "1", "2", "3", "4" } },
1775 { LCFG_ADD_UUID, "add_uuid", { "node", "2", "3", "4" } },
1776 { LCFG_DEL_UUID, "del_uuid", { "1", "2", "3", "4" } },
1777 { LCFG_MOUNTOPT, "new_profile", { "name", "lov", "lmv", "4" } },
1778 { LCFG_DEL_MOUNTOPT, "del_mountopt", { "1", "2", "3", "4" } , },
1779 { LCFG_SET_TIMEOUT, "set_timeout", { "parameter", "2", "3", "4" } },
1780 { LCFG_SET_UPCALL, "set_upcall", { "1", "2", "3", "4" } },
1781 { LCFG_ADD_CONN, "add_conn", { "node", "2", "3", "4" } },
1782 { LCFG_DEL_CONN, "del_conn", { "1", "2", "3", "4" } },
1783 { LCFG_LOV_ADD_OBD, "add_osc", { "ost", "index", "gen", "UUID" } },
1784 { LCFG_LOV_DEL_OBD, "del_osc", { "1", "2", "3", "4" } },
1785 { LCFG_PARAM, "set_param", { "parameter", "value", "3", "4" } },
1786 { LCFG_MARKER, "marker", { "1", "2", "3", "4" } },
1787 { LCFG_LOG_START, "log_start", { "1", "2", "3", "4" } },
1788 { LCFG_LOG_END, "log_end", { "1", "2", "3", "4" } },
1789 { LCFG_LOV_ADD_INA, "add_osc_inactive", { "1", "2", "3", "4" } },
1790 { LCFG_ADD_MDC, "add_mdc", { "mdt", "index", "gen", "UUID" } },
1791 { LCFG_DEL_MDC, "del_mdc", { "1", "2", "3", "4" } },
1792 { LCFG_SPTLRPC_CONF, "security", { "parameter", "2", "3", "4" } },
1793 { LCFG_POOL_NEW, "new_pool", { "fsname", "pool", "3", "4" } },
1794 { LCFG_POOL_ADD, "add_pool", { "fsname", "pool", "ost", "4" } },
1795 { LCFG_POOL_REM, "remove_pool", { "fsname", "pool", "ost", "4" } },
1796 { LCFG_POOL_DEL, "del_pool", { "fsname", "pool", "3", "4" } },
1797 { LCFG_SET_LDLM_TIMEOUT, "set_ldlm_timeout",
1798 { "parameter", "2", "3", "4" } },
1799 { 0, NULL, { NULL, NULL, NULL, NULL } }
1802 static struct lcfg_type_data *lcfg_cmd2data(__u32 cmd)
1806 while (lcfg_data_table[i].ltd_type != 0) {
1807 if (lcfg_data_table[i].ltd_type == cmd)
1808 return &lcfg_data_table[i];
1815 * parse config record and output dump in supplied buffer.
1816 * This is separated from class_config_dump_handler() to use
1817 * for ioctl needs as well
1820 * - { event: attach, device: lustrewt-clilov, type: lov, UUID:
1821 * lustrewt-clilov_UUID }
1823 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size)
1825 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1827 char *end = buf + size;
1829 struct lcfg_type_data *ldata;
1831 LASSERT(rec->lrh_type == OBD_CFG_REC);
1832 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1836 ldata = lcfg_cmd2data(lcfg->lcfg_command);
1840 if (lcfg->lcfg_command == LCFG_MARKER)
1843 /* form YAML entity */
1844 ptr += snprintf(ptr, end - ptr, "- { event: %s", ldata->ltd_name);
1846 if (lcfg->lcfg_flags)
1847 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
1850 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
1853 ptr += snprintf(ptr, end - ptr, ", nid: %s("LPX64")",
1854 libcfs_nid2str(lcfg->lcfg_nid),
1857 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0)
1858 ptr += snprintf(ptr, end - ptr, ", device: %s",
1859 lustre_cfg_string(lcfg, 0));
1861 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1862 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0)
1863 ptr += snprintf(ptr, end - ptr, ", %s: %s",
1864 ldata->ltd_bufs[i - 1],
1865 lustre_cfg_string(lcfg, i));
1868 ptr += snprintf(ptr, end - ptr, " }\n");
1869 /* return consumed bytes */
1875 * parse config record and output dump in supplied buffer.
1876 * This is separated from class_config_dump_handler() to use
1877 * for ioctl needs as well
1879 int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
1881 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1883 char *end = buf + size;
1888 LASSERT(rec->lrh_type == OBD_CFG_REC);
1889 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1893 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
1894 if (lcfg->lcfg_flags)
1895 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1899 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
1902 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1903 libcfs_nid2str(lcfg->lcfg_nid),
1906 if (lcfg->lcfg_command == LCFG_MARKER) {
1907 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1909 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1910 marker->cm_step, marker->cm_flags,
1911 marker->cm_tgtname, marker->cm_comment);
1915 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1916 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1917 lustre_cfg_string(lcfg, i));
1920 ptr += snprintf(ptr, end - ptr, "\n");
1921 /* return consumed bytes */
1926 int class_config_dump_handler(const struct lu_env *env,
1927 struct llog_handle *handle,
1928 struct llog_rec_hdr *rec, void *data)
1935 OBD_ALLOC(outstr, 256);
1939 if (rec->lrh_type == OBD_CFG_REC) {
1940 class_config_parse_rec(rec, outstr, 256);
1941 LCONSOLE(D_WARNING, " %s\n", outstr);
1943 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1947 OBD_FREE(outstr, 256);
1951 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1952 char *name, struct config_llog_instance *cfg)
1954 struct llog_handle *llh;
1959 LCONSOLE_INFO("Dumping config log %s\n", name);
1961 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1965 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1967 GOTO(parse_out, rc);
1969 rc = llog_process(env, llh, class_config_dump_handler, cfg, NULL);
1971 llog_close(env, llh);
1973 LCONSOLE_INFO("End config log %s\n", name);
1976 EXPORT_SYMBOL(class_config_dump_llog);
1978 /** Call class_cleanup and class_detach.
1979 * "Manual" only in the sense that we're faking lcfg commands.
1981 int class_manual_cleanup(struct obd_device *obd)
1984 struct lustre_cfg *lcfg;
1985 struct lustre_cfg_bufs bufs;
1990 CERROR("empty cleanup\n");
1999 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
2000 obd->obd_name, flags);
2002 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
2003 lustre_cfg_bufs_set_string(&bufs, 1, flags);
2004 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
2008 rc = class_process_config(lcfg);
2010 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
2014 /* the lcfg is almost the same for both ops */
2015 lcfg->lcfg_command = LCFG_DETACH;
2016 rc = class_process_config(lcfg);
2018 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
2020 lustre_cfg_free(lcfg);
2023 EXPORT_SYMBOL(class_manual_cleanup);
2026 * uuid<->export lustre hash operations
2030 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
2032 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
2033 sizeof(((struct obd_uuid *)key)->uuid), mask);
2037 uuid_key(struct hlist_node *hnode)
2039 struct obd_export *exp;
2041 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2043 return &exp->exp_client_uuid;
2047 * NOTE: It is impossible to find an export that is in failed
2048 * state with this function
2051 uuid_keycmp(const void *key, struct hlist_node *hnode)
2053 struct obd_export *exp;
2056 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2058 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
2063 uuid_export_object(struct hlist_node *hnode)
2065 return hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2069 uuid_export_get(cfs_hash_t *hs, struct hlist_node *hnode)
2071 struct obd_export *exp;
2073 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2074 class_export_get(exp);
2078 uuid_export_put_locked(cfs_hash_t *hs, struct hlist_node *hnode)
2080 struct obd_export *exp;
2082 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2083 class_export_put(exp);
2086 static cfs_hash_ops_t uuid_hash_ops = {
2087 .hs_hash = uuid_hash,
2089 .hs_keycmp = uuid_keycmp,
2090 .hs_object = uuid_export_object,
2091 .hs_get = uuid_export_get,
2092 .hs_put_locked = uuid_export_put_locked,
2097 * nid<->export hash operations
2101 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
2103 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
2107 nid_key(struct hlist_node *hnode)
2109 struct obd_export *exp;
2111 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2113 RETURN(&exp->exp_connection->c_peer.nid);
2117 * NOTE: It is impossible to find an export that is in failed
2118 * state with this function
2121 nid_kepcmp(const void *key, struct hlist_node *hnode)
2123 struct obd_export *exp;
2126 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2128 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
2133 nid_export_object(struct hlist_node *hnode)
2135 return hlist_entry(hnode, struct obd_export, exp_nid_hash);
2139 nid_export_get(cfs_hash_t *hs, struct hlist_node *hnode)
2141 struct obd_export *exp;
2143 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2144 class_export_get(exp);
2148 nid_export_put_locked(cfs_hash_t *hs, struct hlist_node *hnode)
2150 struct obd_export *exp;
2152 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2153 class_export_put(exp);
2156 static cfs_hash_ops_t nid_hash_ops = {
2157 .hs_hash = nid_hash,
2159 .hs_keycmp = nid_kepcmp,
2160 .hs_object = nid_export_object,
2161 .hs_get = nid_export_get,
2162 .hs_put_locked = nid_export_put_locked,
2167 * nid<->nidstats hash operations
2171 nidstats_key(struct hlist_node *hnode)
2173 struct nid_stat *ns;
2175 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2181 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2183 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
2187 nidstats_object(struct hlist_node *hnode)
2189 return hlist_entry(hnode, struct nid_stat, nid_hash);
2193 nidstats_get(cfs_hash_t *hs, struct hlist_node *hnode)
2195 struct nid_stat *ns;
2197 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2202 nidstats_put_locked(cfs_hash_t *hs, struct hlist_node *hnode)
2204 struct nid_stat *ns;
2206 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2210 static cfs_hash_ops_t nid_stat_hash_ops = {
2211 .hs_hash = nid_hash,
2212 .hs_key = nidstats_key,
2213 .hs_keycmp = nidstats_keycmp,
2214 .hs_object = nidstats_object,
2215 .hs_get = nidstats_get,
2216 .hs_put_locked = nidstats_put_locked,