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 CFS_INIT_LIST_HEAD(&obd->obd_exports);
392 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
393 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
394 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
395 CFS_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 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
412 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
413 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
414 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
415 INIT_LIST_HEAD(&obd->obd_lwp_list);
417 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
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);
430 if (OBP(obd, attach)) {
431 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
433 GOTO(out, rc = -EINVAL);
436 /* Detach drops this */
437 spin_lock(&obd->obd_dev_lock);
438 atomic_set(&obd->obd_refcount, 1);
439 spin_unlock(&obd->obd_dev_lock);
440 lu_ref_init(&obd->obd_reference);
441 lu_ref_add(&obd->obd_reference, "attach", obd);
443 obd->obd_attached = 1;
444 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
445 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
449 class_release_dev(obd);
453 EXPORT_SYMBOL(class_attach);
455 /** Create hashes, self-export, and call type-specific setup.
456 * Setup is effectively the "start this obd" call.
458 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
461 struct obd_export *exp;
464 LASSERT(obd != NULL);
465 LASSERTF(obd == class_num2obd(obd->obd_minor),
466 "obd %p != obd_devs[%d] %p\n",
467 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
468 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
469 "obd %p obd_magic %08x != %08x\n",
470 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
472 /* have we attached a type to this device? */
473 if (!obd->obd_attached) {
474 CERROR("Device %d not attached\n", obd->obd_minor);
478 if (obd->obd_set_up) {
479 CERROR("Device %d already setup (type %s)\n",
480 obd->obd_minor, obd->obd_type->typ_name);
484 /* is someone else setting us up right now? (attach inits spinlock) */
485 spin_lock(&obd->obd_dev_lock);
486 if (obd->obd_starting) {
487 spin_unlock(&obd->obd_dev_lock);
488 CERROR("Device %d setup in progress (type %s)\n",
489 obd->obd_minor, obd->obd_type->typ_name);
492 /* just leave this on forever. I can't use obd_set_up here because
493 other fns check that status, and we're not actually set up yet. */
494 obd->obd_starting = 1;
495 obd->obd_uuid_hash = NULL;
496 obd->obd_nid_hash = NULL;
497 obd->obd_nid_stats_hash = NULL;
498 spin_unlock(&obd->obd_dev_lock);
500 /* create an uuid-export lustre hash */
501 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
504 HASH_UUID_BKT_BITS, 0,
507 &uuid_hash_ops, CFS_HASH_DEFAULT);
508 if (!obd->obd_uuid_hash)
509 GOTO(err_hash, err = -ENOMEM);
511 /* create a nid-export lustre hash */
512 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
515 HASH_NID_BKT_BITS, 0,
518 &nid_hash_ops, CFS_HASH_DEFAULT);
519 if (!obd->obd_nid_hash)
520 GOTO(err_hash, err = -ENOMEM);
522 /* create a nid-stats lustre hash */
523 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
524 HASH_NID_STATS_CUR_BITS,
525 HASH_NID_STATS_MAX_BITS,
526 HASH_NID_STATS_BKT_BITS, 0,
529 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
530 if (!obd->obd_nid_stats_hash)
531 GOTO(err_hash, err = -ENOMEM);
533 exp = class_new_export(obd, &obd->obd_uuid);
535 GOTO(err_hash, err = PTR_ERR(exp));
537 obd->obd_self_export = exp;
538 cfs_list_del_init(&exp->exp_obd_chain_timed);
539 class_export_put(exp);
541 err = obd_setup(obd, lcfg);
547 spin_lock(&obd->obd_dev_lock);
548 /* cleanup drops this */
549 class_incref(obd, "setup", obd);
550 spin_unlock(&obd->obd_dev_lock);
552 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
553 obd->obd_name, obd->obd_uuid.uuid);
557 if (obd->obd_self_export) {
558 class_unlink_export(obd->obd_self_export);
559 obd->obd_self_export = NULL;
562 if (obd->obd_uuid_hash) {
563 cfs_hash_putref(obd->obd_uuid_hash);
564 obd->obd_uuid_hash = NULL;
566 if (obd->obd_nid_hash) {
567 cfs_hash_putref(obd->obd_nid_hash);
568 obd->obd_nid_hash = NULL;
570 if (obd->obd_nid_stats_hash) {
571 cfs_hash_putref(obd->obd_nid_stats_hash);
572 obd->obd_nid_stats_hash = NULL;
574 obd->obd_starting = 0;
575 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
578 EXPORT_SYMBOL(class_setup);
580 /** We have finished using this obd and are ready to destroy it.
581 * There can be no more references to this obd.
583 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
587 if (obd->obd_set_up) {
588 CERROR("OBD device %d still set up\n", obd->obd_minor);
592 spin_lock(&obd->obd_dev_lock);
593 if (!obd->obd_attached) {
594 spin_unlock(&obd->obd_dev_lock);
595 CERROR("OBD device %d not attached\n", obd->obd_minor);
598 obd->obd_attached = 0;
599 spin_unlock(&obd->obd_dev_lock);
601 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
602 obd->obd_name, obd->obd_uuid.uuid);
604 class_decref(obd, "attach", obd);
607 EXPORT_SYMBOL(class_detach);
609 /** Start shutting down the obd. There may be in-progess ops when
610 * this is called. We tell them to start shutting down with a call
611 * to class_disconnect_exports().
613 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
619 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
621 if (!obd->obd_set_up) {
622 CERROR("Device %d not setup\n", obd->obd_minor);
626 spin_lock(&obd->obd_dev_lock);
627 if (obd->obd_stopping) {
628 spin_unlock(&obd->obd_dev_lock);
629 CERROR("OBD %d already stopping\n", obd->obd_minor);
632 /* Leave this on forever */
633 obd->obd_stopping = 1;
635 /* wait for already-arrived-connections to finish. */
636 while (obd->obd_conn_inprogress > 0) {
637 spin_unlock(&obd->obd_dev_lock);
641 spin_lock(&obd->obd_dev_lock);
643 spin_unlock(&obd->obd_dev_lock);
645 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
646 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
652 LCONSOLE_WARN("Failing over %s\n",
655 obd->obd_no_transno = 1;
656 obd->obd_no_recov = 1;
657 if (OBP(obd, iocontrol)) {
658 obd_iocontrol(OBD_IOC_SYNC,
659 obd->obd_self_export,
664 CERROR("Unrecognised flag '%c'\n", *flag);
668 LASSERT(obd->obd_self_export);
670 /* The three references that should be remaining are the
671 * obd_self_export and the attach and setup references. */
672 if (atomic_read(&obd->obd_refcount) > 3) {
673 /* refcounf - 3 might be the number of real exports
674 (excluding self export). But class_incref is called
675 by other things as well, so don't count on it. */
676 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
677 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
678 dump_exports(obd, 0);
679 class_disconnect_exports(obd);
682 /* Precleanup, we must make sure all exports get destroyed. */
683 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
685 CERROR("Precleanup %s returned %d\n",
688 /* destroy an uuid-export hash body */
689 if (obd->obd_uuid_hash) {
690 cfs_hash_putref(obd->obd_uuid_hash);
691 obd->obd_uuid_hash = NULL;
694 /* destroy a nid-export hash body */
695 if (obd->obd_nid_hash) {
696 cfs_hash_putref(obd->obd_nid_hash);
697 obd->obd_nid_hash = NULL;
700 /* destroy a nid-stats hash body */
701 if (obd->obd_nid_stats_hash) {
702 cfs_hash_putref(obd->obd_nid_stats_hash);
703 obd->obd_nid_stats_hash = NULL;
706 class_decref(obd, "setup", obd);
711 EXPORT_SYMBOL(class_cleanup);
713 struct obd_device *class_incref(struct obd_device *obd,
714 const char *scope, const void *source)
716 lu_ref_add_atomic(&obd->obd_reference, scope, source);
717 atomic_inc(&obd->obd_refcount);
718 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
719 atomic_read(&obd->obd_refcount));
723 EXPORT_SYMBOL(class_incref);
725 void class_decref(struct obd_device *obd, const char *scope, const void *source)
730 spin_lock(&obd->obd_dev_lock);
731 atomic_dec(&obd->obd_refcount);
732 refs = atomic_read(&obd->obd_refcount);
733 spin_unlock(&obd->obd_dev_lock);
734 lu_ref_del(&obd->obd_reference, scope, source);
736 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
738 if ((refs == 1) && obd->obd_stopping) {
739 /* All exports have been destroyed; there should
740 be no more in-progress ops by this point.*/
742 spin_lock(&obd->obd_self_export->exp_lock);
743 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
744 spin_unlock(&obd->obd_self_export->exp_lock);
746 /* note that we'll recurse into class_decref again */
747 class_unlink_export(obd->obd_self_export);
752 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
753 obd->obd_name, obd->obd_uuid.uuid);
754 LASSERT(!obd->obd_attached);
755 if (obd->obd_stopping) {
756 /* If we're not stopping, we were never set up */
757 err = obd_cleanup(obd);
759 CERROR("Cleanup %s returned %d\n",
762 if (OBP(obd, detach)) {
763 err = OBP(obd, detach)(obd);
765 CERROR("Detach returned %d\n", err);
767 class_release_dev(obd);
770 EXPORT_SYMBOL(class_decref);
772 /** Add a failover nid location.
773 * Client obd types contact server obd types using this nid list.
775 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
777 struct obd_import *imp;
778 struct obd_uuid uuid;
782 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
783 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
784 CERROR("invalid conn_uuid\n");
787 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
788 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
789 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
790 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
791 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
792 CERROR("can't add connection on non-client dev\n");
796 imp = obd->u.cli.cl_import;
798 CERROR("try to add conn on immature client dev\n");
802 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
803 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
807 EXPORT_SYMBOL(class_add_conn);
809 /** Remove a failover nid location.
811 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
813 struct obd_import *imp;
814 struct obd_uuid uuid;
818 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
819 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
820 CERROR("invalid conn_uuid\n");
823 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
824 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
825 CERROR("can't del connection on non-client dev\n");
829 imp = obd->u.cli.cl_import;
831 CERROR("try to del conn on immature client dev\n");
835 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
836 rc = obd_del_conn(imp, &uuid);
841 CFS_LIST_HEAD(lustre_profile_list);
843 struct lustre_profile *class_get_profile(const char * prof)
845 struct lustre_profile *lprof;
848 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
849 if (!strcmp(lprof->lp_profile, prof)) {
855 EXPORT_SYMBOL(class_get_profile);
857 /** Create a named "profile".
858 * This defines the mdc and osc names to use for a client.
859 * This also is used to define the lov to be used by a mdt.
861 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
862 int mdclen, char *mdc)
864 struct lustre_profile *lprof;
868 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
870 OBD_ALLOC(lprof, sizeof(*lprof));
873 CFS_INIT_LIST_HEAD(&lprof->lp_list);
875 LASSERT(proflen == (strlen(prof) + 1));
876 OBD_ALLOC(lprof->lp_profile, proflen);
877 if (lprof->lp_profile == NULL)
878 GOTO(out, err = -ENOMEM);
879 memcpy(lprof->lp_profile, prof, proflen);
881 LASSERT(osclen == (strlen(osc) + 1));
882 OBD_ALLOC(lprof->lp_dt, osclen);
883 if (lprof->lp_dt == NULL)
884 GOTO(out, err = -ENOMEM);
885 memcpy(lprof->lp_dt, osc, osclen);
888 LASSERT(mdclen == (strlen(mdc) + 1));
889 OBD_ALLOC(lprof->lp_md, mdclen);
890 if (lprof->lp_md == NULL)
891 GOTO(out, err = -ENOMEM);
892 memcpy(lprof->lp_md, mdc, mdclen);
895 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
900 OBD_FREE(lprof->lp_md, mdclen);
902 OBD_FREE(lprof->lp_dt, osclen);
903 if (lprof->lp_profile)
904 OBD_FREE(lprof->lp_profile, proflen);
905 OBD_FREE(lprof, sizeof(*lprof));
909 void class_del_profile(const char *prof)
911 struct lustre_profile *lprof;
914 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
916 lprof = class_get_profile(prof);
918 cfs_list_del(&lprof->lp_list);
919 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
920 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
922 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
923 OBD_FREE(lprof, sizeof *lprof);
927 EXPORT_SYMBOL(class_del_profile);
930 void class_del_profiles(void)
932 struct lustre_profile *lprof, *n;
935 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
936 cfs_list_del(&lprof->lp_list);
937 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
938 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
940 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
941 OBD_FREE(lprof, sizeof *lprof);
945 EXPORT_SYMBOL(class_del_profiles);
947 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
950 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
952 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
954 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
956 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
957 at_early_margin = val;
958 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
960 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
961 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
962 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
966 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
971 /* We can't call ll_process_config or lquota_process_config directly because
972 * it lives in a module that must be loaded after this one. */
973 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
974 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
976 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
978 client_process_config = cpc;
980 EXPORT_SYMBOL(lustre_register_client_process_config);
983 * Rename the proc parameter in \a cfg with a new name \a new_name.
985 * \param cfg config structure which contains the proc parameter
986 * \param new_name new name of the proc parameter
988 * \retval valid-pointer pointer to the newly-allocated config structure
989 * which contains the renamed proc parameter
990 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
991 * not contain a proc parameter
992 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
994 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
995 const char *new_name)
997 struct lustre_cfg_bufs *bufs = NULL;
998 struct lustre_cfg *new_cfg = NULL;
1000 char *new_param = NULL;
1006 if (cfg == NULL || new_name == NULL)
1007 RETURN(ERR_PTR(-EINVAL));
1009 param = lustre_cfg_string(cfg, 1);
1011 RETURN(ERR_PTR(-EINVAL));
1013 value = strchr(param, '=');
1015 name_len = strlen(param);
1017 name_len = value - param;
1019 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1021 OBD_ALLOC(new_param, new_len);
1022 if (new_param == NULL)
1023 RETURN(ERR_PTR(-ENOMEM));
1025 strcpy(new_param, new_name);
1027 strcat(new_param, value);
1029 OBD_ALLOC_PTR(bufs);
1031 OBD_FREE(new_param, new_len);
1032 RETURN(ERR_PTR(-ENOMEM));
1035 lustre_cfg_bufs_reset(bufs, NULL);
1036 lustre_cfg_bufs_init(bufs, cfg);
1037 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1039 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
1041 OBD_FREE(new_param, new_len);
1043 if (new_cfg == NULL)
1044 RETURN(ERR_PTR(-ENOMEM));
1046 new_cfg->lcfg_num = cfg->lcfg_num;
1047 new_cfg->lcfg_flags = cfg->lcfg_flags;
1048 new_cfg->lcfg_nid = cfg->lcfg_nid;
1049 new_cfg->lcfg_nal = cfg->lcfg_nal;
1053 EXPORT_SYMBOL(lustre_cfg_rename);
1055 static int process_param2_config(struct lustre_cfg *lcfg)
1057 char *param = lustre_cfg_string(lcfg, 1);
1058 char *upcall = lustre_cfg_string(lcfg, 2);
1060 [0] = "/usr/sbin/lctl",
1065 struct timeval start;
1070 /* Add upcall processing here. Now only lctl is supported */
1071 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1072 CERROR("Unsupported upcall %s\n", upcall);
1076 do_gettimeofday(&start);
1077 rc = call_usermodehelper(argv[0], argv, NULL, 0);
1078 do_gettimeofday(&end);
1081 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1082 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1083 cfs_timeval_sub(&end, &start, NULL));
1085 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1086 argv[0], argv[1], argv[2],
1087 cfs_timeval_sub(&end, &start, NULL));
1094 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1096 quota_process_config = qpc;
1098 EXPORT_SYMBOL(lustre_register_quota_process_config);
1100 /** Process configuration commands given in lustre_cfg form.
1101 * These may come from direct calls (e.g. class_manual_cleanup)
1102 * or processing the config llog, or ioctl from lctl.
1104 int class_process_config(struct lustre_cfg *lcfg)
1106 struct obd_device *obd;
1109 LASSERT(lcfg && !IS_ERR(lcfg));
1110 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1112 /* Commands that don't need a device */
1113 switch(lcfg->lcfg_command) {
1115 err = class_attach(lcfg);
1118 case LCFG_ADD_UUID: {
1119 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1120 " (%s)\n", lustre_cfg_string(lcfg, 1),
1121 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1123 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1126 case LCFG_DEL_UUID: {
1127 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1128 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1129 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1131 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1134 case LCFG_MOUNTOPT: {
1135 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1136 lustre_cfg_string(lcfg, 1),
1137 lustre_cfg_string(lcfg, 2),
1138 lustre_cfg_string(lcfg, 3));
1139 /* set these mount options somewhere, so ll_fill_super
1141 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1142 lustre_cfg_string(lcfg, 1),
1143 LUSTRE_CFG_BUFLEN(lcfg, 2),
1144 lustre_cfg_string(lcfg, 2),
1145 LUSTRE_CFG_BUFLEN(lcfg, 3),
1146 lustre_cfg_string(lcfg, 3));
1149 case LCFG_DEL_MOUNTOPT: {
1150 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1151 lustre_cfg_string(lcfg, 1));
1152 class_del_profile(lustre_cfg_string(lcfg, 1));
1155 case LCFG_SET_TIMEOUT: {
1156 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1157 obd_timeout, lcfg->lcfg_num);
1158 obd_timeout = max(lcfg->lcfg_num, 1U);
1159 obd_timeout_set = 1;
1162 case LCFG_SET_LDLM_TIMEOUT: {
1163 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1164 ldlm_timeout, lcfg->lcfg_num);
1165 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1166 if (ldlm_timeout >= obd_timeout)
1167 ldlm_timeout = max(obd_timeout / 3, 1U);
1168 ldlm_timeout_set = 1;
1171 case LCFG_SET_UPCALL: {
1172 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1173 /* COMPAT_146 Don't fail on old configs */
1177 struct cfg_marker *marker;
1178 marker = lustre_cfg_buf(lcfg, 1);
1179 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1180 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1185 /* llite has no obd */
1186 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1187 PARAM_LLITE, 0) == 0) &&
1188 client_process_config) {
1189 err = (*client_process_config)(lcfg);
1191 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1192 PARAM_SYS, &tmp) == 0)) {
1193 /* Global param settings */
1194 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
1196 * Client or server should not fail to mount if
1197 * it hits an unknown configuration parameter.
1200 CWARN("Ignoring unknown param %s\n", tmp);
1203 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1204 PARAM_QUOTA, &tmp) == 0) &&
1205 quota_process_config) {
1206 err = (*quota_process_config)(lcfg);
1212 case LCFG_SET_PARAM: {
1213 err = process_param2_config(lcfg);
1217 /* Commands that require a device */
1218 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1220 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1221 CERROR("this lcfg command requires a device name\n");
1223 CERROR("no device for: %s\n",
1224 lustre_cfg_string(lcfg, 0));
1226 GOTO(out, err = -EINVAL);
1229 switch(lcfg->lcfg_command) {
1231 err = class_setup(obd, lcfg);
1235 err = class_detach(obd, lcfg);
1238 case LCFG_CLEANUP: {
1239 err = class_cleanup(obd, lcfg);
1242 case LCFG_ADD_CONN: {
1243 err = class_add_conn(obd, lcfg);
1246 case LCFG_DEL_CONN: {
1247 err = class_del_conn(obd, lcfg);
1250 case LCFG_POOL_NEW: {
1251 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1254 case LCFG_POOL_ADD: {
1255 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1256 lustre_cfg_string(lcfg, 3));
1259 case LCFG_POOL_REM: {
1260 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1261 lustre_cfg_string(lcfg, 3));
1264 case LCFG_POOL_DEL: {
1265 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1269 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1275 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1276 CWARN("Ignoring error %d on optional command %#x\n", err,
1277 lcfg->lcfg_command);
1282 EXPORT_SYMBOL(class_process_config);
1284 #ifndef HAVE_ONLY_PROCFS_SEQ
1285 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1286 struct lustre_cfg *lcfg, void *data)
1289 struct lprocfs_vars *var;
1291 int i, keylen, vallen;
1292 int matched = 0, j = 0;
1297 if (lcfg->lcfg_command != LCFG_PARAM) {
1298 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1302 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1303 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1304 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1305 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1306 key = lustre_cfg_buf(lcfg, i);
1307 /* Strip off prefix */
1308 if (class_match_param(key, prefix, &key))
1309 /* If the prefix doesn't match, return error so we
1310 * can pass it down the stack */
1312 sval = strchr(key, '=');
1313 if (!sval || (*(sval + 1) == 0)) {
1314 CERROR("Can't parse param %s (missing '=')\n", key);
1315 /* rc = -EINVAL; continue parsing other params */
1318 keylen = sval - key;
1320 vallen = strlen(sval);
1323 /* Search proc entries */
1324 while (lvars[j].name) {
1326 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1327 keylen == strlen(var->name)) {
1331 if (var->write_fptr) {
1335 rc = (var->write_fptr)(NULL, sval,
1344 CERROR("%.*s: %s unknown param %s\n",
1345 (int)strlen(prefix) - 1, prefix,
1346 (char *)lustre_cfg_string(lcfg, 0), key);
1347 /* rc = -EINVAL; continue parsing other params */
1349 } else if (rc < 0) {
1350 CERROR("%s: error writing proc entry '%s': rc = %d\n",
1351 prefix, var->name, rc);
1354 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1355 lustre_cfg_string(lcfg, 0),
1356 (int)strlen(prefix) - 1, prefix,
1357 (int)(sval - key - 1), key, sval);
1367 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1368 /* Don't throw config error */
1372 EXPORT_SYMBOL(class_process_proc_param);
1375 int class_process_proc_seq_param(char *prefix, struct lprocfs_seq_vars *lvars,
1376 struct lustre_cfg *lcfg, void *data)
1379 struct lprocfs_seq_vars *var;
1380 struct file fakefile;
1381 struct seq_file fake_seqfile;
1383 int i, keylen, vallen;
1384 int matched = 0, j = 0;
1389 if (lcfg->lcfg_command != LCFG_PARAM) {
1390 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1394 /* fake a seq file so that var->fops->write can work... */
1395 fakefile.private_data = &fake_seqfile;
1396 fake_seqfile.private = data;
1397 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1398 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1399 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1400 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1401 key = lustre_cfg_buf(lcfg, i);
1402 /* Strip off prefix */
1403 if (class_match_param(key, prefix, &key))
1404 /* If the prefix doesn't match, return error so we
1405 * can pass it down the stack */
1407 sval = strchr(key, '=');
1408 if (!sval || (*(sval + 1) == 0)) {
1409 CERROR("Can't parse param %s (missing '=')\n", key);
1410 /* rc = -EINVAL; continue parsing other params */
1413 keylen = sval - key;
1415 vallen = strlen(sval);
1418 /* Search proc entries */
1419 while (lvars[j].name) {
1421 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1422 keylen == strlen(var->name)) {
1426 if (var->fops && var->fops->write) {
1430 rc = (var->fops->write)(&fakefile, sval,
1439 CERROR("%.*s: %s unknown param %s\n",
1440 (int)strlen(prefix) - 1, prefix,
1441 (char *)lustre_cfg_string(lcfg, 0), key);
1442 /* rc = -EINVAL; continue parsing other params */
1444 } else if (rc < 0) {
1445 CERROR("%s: error writing proc entry '%s': rc = %d\n",
1446 prefix, var->name, rc);
1449 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1450 lustre_cfg_string(lcfg, 0),
1451 (int)strlen(prefix) - 1, prefix,
1452 (int)(sval - key - 1), key, sval);
1462 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1463 /* Don't throw config error */
1467 EXPORT_SYMBOL(class_process_proc_seq_param);
1470 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1472 #define lustre_check_exclusion(a,b) 0
1475 /** Parse a configuration llog, doing various manipulations on them
1476 * for various reasons, (modifications for compatibility, skip obsolete
1477 * records, change uuids, etc), then class_process_config() resulting
1480 int class_config_llog_handler(const struct lu_env *env,
1481 struct llog_handle *handle,
1482 struct llog_rec_hdr *rec, void *data)
1484 struct config_llog_instance *clli = data;
1485 int cfg_len = rec->lrh_len;
1486 char *cfg_buf = (char*) (rec + 1);
1490 //class_config_dump_handler(handle, rec, data);
1492 switch (rec->lrh_type) {
1494 struct lustre_cfg *lcfg, *lcfg_new;
1495 struct lustre_cfg_bufs bufs;
1496 char *inst_name = NULL;
1498 int inst = 0, swab = 0;
1500 lcfg = (struct lustre_cfg *)cfg_buf;
1501 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1502 lustre_swab_lustre_cfg(lcfg);
1506 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1510 /* Figure out config state info */
1511 if (lcfg->lcfg_command == LCFG_MARKER) {
1512 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1513 lustre_swab_cfg_marker(marker, swab,
1514 LUSTRE_CFG_BUFLEN(lcfg, 1));
1515 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1516 clli->cfg_flags, marker->cm_flags);
1517 if (marker->cm_flags & CM_START) {
1518 /* all previous flags off */
1519 clli->cfg_flags = CFG_F_MARKER;
1520 server_name2index(marker->cm_tgtname,
1521 &clli->cfg_lwp_idx, NULL);
1522 if (marker->cm_flags & CM_SKIP) {
1523 clli->cfg_flags |= CFG_F_SKIP;
1524 CDEBUG(D_CONFIG, "SKIP #%d\n",
1526 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1528 lustre_check_exclusion(clli->cfg_sb,
1529 marker->cm_tgtname))) {
1530 clli->cfg_flags |= CFG_F_EXCLUDE;
1531 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1534 } else if (marker->cm_flags & CM_END) {
1535 clli->cfg_flags = 0;
1538 /* A config command without a start marker before it is
1539 illegal (post 146) */
1540 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1541 !(clli->cfg_flags & CFG_F_MARKER) &&
1542 (lcfg->lcfg_command != LCFG_MARKER)) {
1543 CWARN("Config not inside markers, ignoring! "
1544 "(inst: %p, uuid: %s, flags: %#x)\n",
1546 clli->cfg_uuid.uuid, clli->cfg_flags);
1547 clli->cfg_flags |= CFG_F_SKIP;
1549 if (clli->cfg_flags & CFG_F_SKIP) {
1550 CDEBUG(D_CONFIG, "skipping %#x\n",
1553 /* No processing! */
1558 * For interoperability between 1.8 and 2.0,
1559 * rename "mds" obd device type to "mdt".
1562 char *typename = lustre_cfg_string(lcfg, 1);
1563 char *index = lustre_cfg_string(lcfg, 2);
1565 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1566 strcmp(typename, "mds") == 0)) {
1567 CWARN("For 1.8 interoperability, rename obd "
1568 "type from mds to mdt\n");
1571 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1572 strcmp(index, "type") == 0)) {
1573 CDEBUG(D_INFO, "For 1.8 interoperability, "
1574 "set this index to '0'\n");
1580 #if defined(HAVE_SERVER_SUPPORT) && defined(__KERNEL__)
1581 /* newer MDS replaces LOV/OSC with LOD/OSP */
1583 char *typename = lustre_cfg_string(lcfg, 1);
1585 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1586 strcmp(typename, LUSTRE_LOV_NAME) == 0) &&
1587 IS_MDT(s2lsi(clli->cfg_sb))) {
1589 "For 2.x interoperability, rename obd "
1590 "type from lov to lod (%s)\n",
1591 s2lsi(clli->cfg_sb)->lsi_svname);
1592 strcpy(typename, LUSTRE_LOD_NAME);
1594 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1595 strcmp(typename, LUSTRE_OSC_NAME) == 0) &&
1596 IS_MDT(s2lsi(clli->cfg_sb))) {
1598 "For 2.x interoperability, rename obd "
1599 "type from osc to osp (%s)\n",
1600 s2lsi(clli->cfg_sb)->lsi_svname);
1601 strcpy(typename, LUSTRE_OSP_NAME);
1606 if (clli->cfg_flags & CFG_F_EXCLUDE) {
1607 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1608 lcfg->lcfg_command);
1609 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1610 /* Add inactive instead */
1611 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1614 lustre_cfg_bufs_init(&bufs, lcfg);
1616 if (clli && clli->cfg_instance &&
1617 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1619 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1620 sizeof(clli->cfg_instance) * 2 + 4;
1621 OBD_ALLOC(inst_name, inst_len);
1622 if (inst_name == NULL)
1623 GOTO(out, rc = -ENOMEM);
1624 sprintf(inst_name, "%s-%p",
1625 lustre_cfg_string(lcfg, 0),
1626 clli->cfg_instance);
1627 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1628 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1629 lcfg->lcfg_command, inst_name);
1632 /* we override the llog's uuid for clients, to insure they
1634 if (clli && clli->cfg_instance != NULL &&
1635 lcfg->lcfg_command == LCFG_ATTACH) {
1636 lustre_cfg_bufs_set_string(&bufs, 2,
1637 clli->cfg_uuid.uuid);
1640 * sptlrpc config record, we expect 2 data segments:
1641 * [0]: fs_name/target_name,
1643 * moving them to index [1] and [2], and insert MGC's
1644 * obdname at index [0].
1646 if (clli && clli->cfg_instance == NULL &&
1647 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1648 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1649 bufs.lcfg_buflen[1]);
1650 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1651 bufs.lcfg_buflen[0]);
1652 lustre_cfg_bufs_set_string(&bufs, 0,
1656 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1658 lcfg_new->lcfg_num = lcfg->lcfg_num;
1659 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1661 /* XXX Hack to try to remain binary compatible with
1662 * pre-newconfig logs */
1663 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1664 (lcfg->lcfg_nid >> 32) == 0) {
1665 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1667 lcfg_new->lcfg_nid =
1668 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1669 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1670 lcfg->lcfg_nal, addr,
1671 libcfs_nid2str(lcfg_new->lcfg_nid));
1673 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1676 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1678 rc = class_process_config(lcfg_new);
1679 lustre_cfg_free(lcfg_new);
1682 OBD_FREE(inst_name, inst_len);
1686 CERROR("Unknown llog record type %#x encountered\n",
1692 CERROR("%s: cfg command failed: rc = %d\n",
1693 handle->lgh_ctxt->loc_obd->obd_name, rc);
1694 class_config_dump_handler(NULL, handle, rec, data);
1698 EXPORT_SYMBOL(class_config_llog_handler);
1700 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1701 char *name, struct config_llog_instance *cfg)
1703 struct llog_process_cat_data cd = {0, 0};
1704 struct llog_handle *llh;
1709 CDEBUG(D_INFO, "looking up llog %s\n", name);
1710 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1714 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1716 GOTO(parse_out, rc);
1718 /* continue processing from where we last stopped to end-of-log */
1720 cd.lpcd_first_idx = cfg->cfg_last_idx;
1721 callback = cfg->cfg_callback;
1722 LASSERT(callback != NULL);
1724 callback = class_config_llog_handler;
1727 cd.lpcd_last_idx = 0;
1729 rc = llog_process(env, llh, callback, cfg, &cd);
1731 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1732 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1734 cfg->cfg_last_idx = cd.lpcd_last_idx;
1737 llog_close(env, llh);
1740 EXPORT_SYMBOL(class_config_parse_llog);
1742 struct lcfg_type_data {
1746 } lcfg_data_table[] = {
1747 { LCFG_ATTACH, "attach", { "type", "UUID", "3", "4" } },
1748 { LCFG_DETACH, "detach", { "1", "2", "3", "4" } },
1749 { LCFG_SETUP, "setup", { "UUID", "node", "options", "failout" } },
1750 { LCFG_CLEANUP, "cleanup", { "1", "2", "3", "4" } },
1751 { LCFG_ADD_UUID, "add_uuid", { "node", "2", "3", "4" } },
1752 { LCFG_DEL_UUID, "del_uuid", { "1", "2", "3", "4" } },
1753 { LCFG_MOUNTOPT, "new_profile", { "name", "lov", "lmv", "4" } },
1754 { LCFG_DEL_MOUNTOPT, "del_mountopt", { "1", "2", "3", "4" } , },
1755 { LCFG_SET_TIMEOUT, "set_timeout", { "parameter", "2", "3", "4" } },
1756 { LCFG_SET_UPCALL, "set_upcall", { "1", "2", "3", "4" } },
1757 { LCFG_ADD_CONN, "add_conn", { "node", "2", "3", "4" } },
1758 { LCFG_DEL_CONN, "del_conn", { "1", "2", "3", "4" } },
1759 { LCFG_LOV_ADD_OBD, "add_osc", { "ost", "index", "gen", "UUID" } },
1760 { LCFG_LOV_DEL_OBD, "del_osc", { "1", "2", "3", "4" } },
1761 { LCFG_PARAM, "set_param", { "parameter", "value", "3", "4" } },
1762 { LCFG_MARKER, "marker", { "1", "2", "3", "4" } },
1763 { LCFG_LOG_START, "log_start", { "1", "2", "3", "4" } },
1764 { LCFG_LOG_END, "log_end", { "1", "2", "3", "4" } },
1765 { LCFG_LOV_ADD_INA, "add_osc_inactive", { "1", "2", "3", "4" } },
1766 { LCFG_ADD_MDC, "add_mdc", { "mdt", "index", "gen", "UUID" } },
1767 { LCFG_DEL_MDC, "del_mdc", { "1", "2", "3", "4" } },
1768 { LCFG_SPTLRPC_CONF, "security", { "parameter", "2", "3", "4" } },
1769 { LCFG_POOL_NEW, "new_pool", { "fsname", "pool", "3", "4" } },
1770 { LCFG_POOL_ADD, "add_pool", { "fsname", "pool", "ost", "4" } },
1771 { LCFG_POOL_REM, "remove_pool", { "fsname", "pool", "ost", "4" } },
1772 { LCFG_POOL_DEL, "del_pool", { "fsname", "pool", "3", "4" } },
1773 { LCFG_SET_LDLM_TIMEOUT, "set_ldlm_timeout",
1774 { "parameter", "2", "3", "4" } },
1775 { 0, NULL, { NULL, NULL, NULL, NULL } }
1778 static struct lcfg_type_data *lcfg_cmd2data(__u32 cmd)
1782 while (lcfg_data_table[i].ltd_type != 0) {
1783 if (lcfg_data_table[i].ltd_type == cmd)
1784 return &lcfg_data_table[i];
1791 * parse config record and output dump in supplied buffer.
1792 * This is separated from class_config_dump_handler() to use
1793 * for ioctl needs as well
1796 * - { event: attach, device: lustrewt-clilov, type: lov, UUID:
1797 * lustrewt-clilov_UUID }
1799 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size)
1801 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1803 char *end = buf + size;
1805 struct lcfg_type_data *ldata;
1807 LASSERT(rec->lrh_type == OBD_CFG_REC);
1808 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1812 ldata = lcfg_cmd2data(lcfg->lcfg_command);
1816 if (lcfg->lcfg_command == LCFG_MARKER)
1819 /* form YAML entity */
1820 ptr += snprintf(ptr, end - ptr, "- { event: %s", ldata->ltd_name);
1822 if (lcfg->lcfg_flags)
1823 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
1826 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
1829 ptr += snprintf(ptr, end - ptr, ", nid: %s("LPX64")",
1830 libcfs_nid2str(lcfg->lcfg_nid),
1833 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0)
1834 ptr += snprintf(ptr, end - ptr, ", device: %s",
1835 lustre_cfg_string(lcfg, 0));
1837 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1838 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0)
1839 ptr += snprintf(ptr, end - ptr, ", %s: %s",
1840 ldata->ltd_bufs[i - 1],
1841 lustre_cfg_string(lcfg, i));
1844 ptr += snprintf(ptr, end - ptr, " }\n");
1845 /* return consumed bytes */
1851 * parse config record and output dump in supplied buffer.
1852 * This is separated from class_config_dump_handler() to use
1853 * for ioctl needs as well
1855 int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
1857 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1859 char *end = buf + size;
1864 LASSERT(rec->lrh_type == OBD_CFG_REC);
1865 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1869 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
1870 if (lcfg->lcfg_flags)
1871 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1875 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
1878 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1879 libcfs_nid2str(lcfg->lcfg_nid),
1882 if (lcfg->lcfg_command == LCFG_MARKER) {
1883 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1885 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1886 marker->cm_step, marker->cm_flags,
1887 marker->cm_tgtname, marker->cm_comment);
1891 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1892 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1893 lustre_cfg_string(lcfg, i));
1896 ptr += snprintf(ptr, end - ptr, "\n");
1897 /* return consumed bytes */
1902 int class_config_dump_handler(const struct lu_env *env,
1903 struct llog_handle *handle,
1904 struct llog_rec_hdr *rec, void *data)
1911 OBD_ALLOC(outstr, 256);
1915 if (rec->lrh_type == OBD_CFG_REC) {
1916 class_config_parse_rec(rec, outstr, 256);
1917 LCONSOLE(D_WARNING, " %s", outstr);
1919 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1923 OBD_FREE(outstr, 256);
1927 int class_config_dump_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1928 char *name, struct config_llog_instance *cfg)
1930 struct llog_handle *llh;
1935 LCONSOLE_INFO("Dumping config log %s\n", name);
1937 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1941 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1943 GOTO(parse_out, rc);
1945 rc = llog_process(env, llh, class_config_dump_handler, cfg, NULL);
1947 llog_close(env, llh);
1949 LCONSOLE_INFO("End config log %s\n", name);
1952 EXPORT_SYMBOL(class_config_dump_llog);
1954 /** Call class_cleanup and class_detach.
1955 * "Manual" only in the sense that we're faking lcfg commands.
1957 int class_manual_cleanup(struct obd_device *obd)
1960 struct lustre_cfg *lcfg;
1961 struct lustre_cfg_bufs bufs;
1966 CERROR("empty cleanup\n");
1975 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1976 obd->obd_name, flags);
1978 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1979 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1980 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1984 rc = class_process_config(lcfg);
1986 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1990 /* the lcfg is almost the same for both ops */
1991 lcfg->lcfg_command = LCFG_DETACH;
1992 rc = class_process_config(lcfg);
1994 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1996 lustre_cfg_free(lcfg);
1999 EXPORT_SYMBOL(class_manual_cleanup);
2002 * uuid<->export lustre hash operations
2006 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
2008 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
2009 sizeof(((struct obd_uuid *)key)->uuid), mask);
2013 uuid_key(cfs_hlist_node_t *hnode)
2015 struct obd_export *exp;
2017 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2019 return &exp->exp_client_uuid;
2023 * NOTE: It is impossible to find an export that is in failed
2024 * state with this function
2027 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
2029 struct obd_export *exp;
2032 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2034 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
2039 uuid_export_object(cfs_hlist_node_t *hnode)
2041 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2045 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
2047 struct obd_export *exp;
2049 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2050 class_export_get(exp);
2054 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
2056 struct obd_export *exp;
2058 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2059 class_export_put(exp);
2062 static cfs_hash_ops_t uuid_hash_ops = {
2063 .hs_hash = uuid_hash,
2065 .hs_keycmp = uuid_keycmp,
2066 .hs_object = uuid_export_object,
2067 .hs_get = uuid_export_get,
2068 .hs_put_locked = uuid_export_put_locked,
2073 * nid<->export hash operations
2077 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
2079 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
2083 nid_key(cfs_hlist_node_t *hnode)
2085 struct obd_export *exp;
2087 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
2089 RETURN(&exp->exp_connection->c_peer.nid);
2093 * NOTE: It is impossible to find an export that is in failed
2094 * state with this function
2097 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
2099 struct obd_export *exp;
2102 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
2104 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
2109 nid_export_object(cfs_hlist_node_t *hnode)
2111 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
2115 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
2117 struct obd_export *exp;
2119 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
2120 class_export_get(exp);
2124 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
2126 struct obd_export *exp;
2128 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
2129 class_export_put(exp);
2132 static cfs_hash_ops_t nid_hash_ops = {
2133 .hs_hash = nid_hash,
2135 .hs_keycmp = nid_kepcmp,
2136 .hs_object = nid_export_object,
2137 .hs_get = nid_export_get,
2138 .hs_put_locked = nid_export_put_locked,
2143 * nid<->nidstats hash operations
2147 nidstats_key(cfs_hlist_node_t *hnode)
2149 struct nid_stat *ns;
2151 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
2157 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
2159 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
2163 nidstats_object(cfs_hlist_node_t *hnode)
2165 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
2169 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
2171 struct nid_stat *ns;
2173 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
2178 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
2180 struct nid_stat *ns;
2182 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
2186 static cfs_hash_ops_t nid_stat_hash_ops = {
2187 .hs_hash = nid_hash,
2188 .hs_key = nidstats_key,
2189 .hs_keycmp = nidstats_keycmp,
2190 .hs_object = nidstats_object,
2191 .hs_get = nidstats_get,
2192 .hs_put_locked = nidstats_put_locked,