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, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/obd_config.c
41 #define DEBUG_SUBSYSTEM S_CLASS
42 #include <obd_class.h>
43 #include <linux/string.h>
44 #include <lustre_disk.h>
45 #include <lustre_ioctl.h>
46 #include <lustre_log.h>
47 #include <lprocfs_status.h>
48 #include <lustre_param.h>
50 #include "llog_internal.h"
52 static struct cfs_hash_ops uuid_hash_ops;
53 static struct cfs_hash_ops nid_hash_ops;
54 static struct cfs_hash_ops nid_stat_hash_ops;
55 static struct cfs_hash_ops gen_hash_ops;
57 /*********** string parsing utils *********/
59 /* returns 0 if we find this key in the buffer, else 1 */
60 int class_find_param(char *buf, char *key, char **valp)
67 if ((ptr = strstr(buf, key)) == NULL)
71 *valp = ptr + strlen(key);
75 EXPORT_SYMBOL(class_find_param);
78 * Check whether the proc parameter \a param is an old parameter or not from
79 * the array \a ptr which contains the mapping from old parameters to new ones.
80 * If it's an old one, then return the pointer to the cfg_interop_param struc-
81 * ture which contains both the old and new parameters.
83 * \param param proc parameter
84 * \param ptr an array which contains the mapping from
85 * old parameters to new ones
87 * \retval valid-pointer pointer to the cfg_interop_param structure
88 * which contains the old and new parameters
89 * \retval NULL \a param or \a ptr is NULL,
90 * or \a param is not an old parameter
92 struct cfg_interop_param *class_find_old_param(const char *param,
93 struct cfg_interop_param *ptr)
98 if (param == NULL || ptr == NULL)
101 value = strchr(param, '=');
103 name_len = strlen(param);
105 name_len = value - param;
107 while (ptr->old_param != NULL) {
108 if (strncmp(param, ptr->old_param, name_len) == 0 &&
109 name_len == strlen(ptr->old_param))
116 EXPORT_SYMBOL(class_find_old_param);
119 * Finds a parameter in \a params and copies it to \a copy.
121 * Leading spaces are skipped. Next space or end of string is the
122 * parameter terminator with the exception that spaces inside single or double
123 * quotes get included into a parameter. The parameter is copied into \a copy
124 * which has to be allocated big enough by a caller, quotes are stripped in
125 * the copy and the copy is terminated by 0.
127 * On return \a params is set to next parameter or to NULL if last
128 * parameter is returned.
130 * \retval 0 if parameter is returned in \a copy
131 * \retval 1 otherwise
132 * \retval -EINVAL if unbalanced quota is found
134 int class_get_next_param(char **params, char *copy)
149 q1 = strpbrk(str, " '\"");
152 memcpy(copy, str, len);
159 memcpy(copy, str, len);
165 memcpy(copy, str, len);
168 /* search for the matching closing quote */
170 q2 = strchr(str, *q1);
172 CERROR("Unbalanced quota in parameters: \"%s\"\n",
177 memcpy(copy, str, len);
183 EXPORT_SYMBOL(class_get_next_param);
185 /* returns 0 if this is the first key in the buffer, else 1.
186 valp points to first char after key. */
187 int class_match_param(char *buf, const char *key, char **valp)
192 if (memcmp(buf, key, strlen(key)) != 0)
196 *valp = buf + strlen(key);
200 EXPORT_SYMBOL(class_match_param);
202 static int parse_nid(char *buf, void *value, int quiet)
204 lnet_nid_t *nid = (lnet_nid_t *)value;
206 *nid = libcfs_str2nid(buf);
207 if (*nid != LNET_NID_ANY)
211 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
215 static int parse_net(char *buf, void *value)
217 __u32 *net = (__u32 *)value;
219 *net = libcfs_str2net(buf);
220 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
232 endh is set to next separator */
233 static int class_parse_value(char *buf, int opc, void *value, char **endh,
242 while (*buf == ',' || *buf == ':')
244 if (*buf == ' ' || *buf == '/' || *buf == '\0')
247 /* nid separators or end of nids */
248 endp = strpbrk(buf, ",: /");
250 endp = buf + strlen(buf);
257 case CLASS_PARSE_NID:
258 rc = parse_nid(buf, value, quiet);
260 case CLASS_PARSE_NET:
261 rc = parse_net(buf, value);
272 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
274 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
276 EXPORT_SYMBOL(class_parse_nid);
278 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
280 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
282 EXPORT_SYMBOL(class_parse_nid_quiet);
284 int class_parse_net(char *buf, __u32 *net, char **endh)
286 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
289 /* 1 param contains key and match
290 * 0 param contains key and not match
291 * -1 param does not contain key
293 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
298 while (class_find_param(buf, key, &buf) == 0) {
299 /* please restrict to the nids pertaining to
300 * the specified nids */
301 while (class_parse_nid(buf, &tmp, &buf) == 0) {
310 int class_match_net(char *buf, char *key, __u32 net)
315 while (class_find_param(buf, key, &buf) == 0) {
316 /* please restrict to the nids pertaining to
317 * the specified networks */
318 while (class_parse_net(buf, &tmp, &buf) == 0) {
327 /********************** class fns **********************/
330 * Create a new obd device and set the type, name and uuid. If successful,
331 * the new device can be accessed by either name or uuid.
333 int class_attach(struct lustre_cfg *lcfg)
335 struct obd_device *obd = NULL;
336 char *typename, *name, *uuid;
340 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
341 CERROR("No type passed!\n");
344 typename = lustre_cfg_string(lcfg, 1);
346 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
347 CERROR("No name passed!\n");
350 name = lustre_cfg_string(lcfg, 0);
352 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
353 CERROR("No UUID passed!\n");
356 uuid = lustre_cfg_string(lcfg, 2);
358 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
359 MKSTR(typename), MKSTR(name), MKSTR(uuid));
361 obd = class_newdev(typename, name);
363 /* Already exists or out of obds */
366 CERROR("Cannot create device %s of type %s : %d\n",
370 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
372 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
373 "obd %p obd_magic %08X != %08X\n",
374 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
375 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
376 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
378 rwlock_init(&obd->obd_pool_lock);
379 obd->obd_pool_limit = 0;
380 obd->obd_pool_slv = 0;
382 INIT_LIST_HEAD(&obd->obd_exports);
383 INIT_LIST_HEAD(&obd->obd_unlinked_exports);
384 INIT_LIST_HEAD(&obd->obd_delayed_exports);
385 INIT_LIST_HEAD(&obd->obd_exports_timed);
386 INIT_LIST_HEAD(&obd->obd_nid_stats);
387 spin_lock_init(&obd->obd_nid_lock);
388 spin_lock_init(&obd->obd_dev_lock);
389 mutex_init(&obd->obd_dev_mutex);
390 spin_lock_init(&obd->obd_osfs_lock);
391 /* obd->obd_osfs_age must be set to a value in the distant
392 * past to guarantee a fresh statfs is fetched on mount. */
393 obd->obd_osfs_age = cfs_time_shift_64(-1000);
395 /* XXX belongs in setup not attach */
396 init_rwsem(&obd->obd_observer_link_sem);
398 cfs_init_timer(&obd->obd_recovery_timer);
399 spin_lock_init(&obd->obd_recovery_task_lock);
400 init_waitqueue_head(&obd->obd_next_transno_waitq);
401 init_waitqueue_head(&obd->obd_evict_inprogress_waitq);
402 INIT_LIST_HEAD(&obd->obd_req_replay_queue);
403 INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
404 INIT_LIST_HEAD(&obd->obd_final_req_queue);
405 INIT_LIST_HEAD(&obd->obd_evict_list);
406 INIT_LIST_HEAD(&obd->obd_lwp_list);
408 llog_group_init(&obd->obd_olg);
410 obd->obd_conn_inprogress = 0;
413 if (len >= sizeof(obd->obd_uuid)) {
414 CERROR("uuid must be < %d bytes long\n",
415 (int)sizeof(obd->obd_uuid));
416 GOTO(out, rc = -EINVAL);
418 memcpy(obd->obd_uuid.uuid, uuid, len);
420 /* Detach drops this */
421 spin_lock(&obd->obd_dev_lock);
422 atomic_set(&obd->obd_refcount, 1);
423 spin_unlock(&obd->obd_dev_lock);
424 lu_ref_init(&obd->obd_reference);
425 lu_ref_add(&obd->obd_reference, "attach", obd);
427 obd->obd_attached = 1;
428 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
429 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
433 class_release_dev(obd);
437 EXPORT_SYMBOL(class_attach);
439 /** Create hashes, self-export, and call type-specific setup.
440 * Setup is effectively the "start this obd" call.
442 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
445 struct obd_export *exp;
448 LASSERT(obd != NULL);
449 LASSERTF(obd == class_num2obd(obd->obd_minor),
450 "obd %p != obd_devs[%d] %p\n",
451 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
452 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
453 "obd %p obd_magic %08x != %08x\n",
454 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
456 /* have we attached a type to this device? */
457 if (!obd->obd_attached) {
458 CERROR("Device %d not attached\n", obd->obd_minor);
462 if (obd->obd_set_up) {
463 CERROR("Device %d already setup (type %s)\n",
464 obd->obd_minor, obd->obd_type->typ_name);
468 /* is someone else setting us up right now? (attach inits spinlock) */
469 spin_lock(&obd->obd_dev_lock);
470 if (obd->obd_starting) {
471 spin_unlock(&obd->obd_dev_lock);
472 CERROR("Device %d setup in progress (type %s)\n",
473 obd->obd_minor, obd->obd_type->typ_name);
476 /* just leave this on forever. I can't use obd_set_up here because
477 other fns check that status, and we're not actually set up yet. */
478 obd->obd_starting = 1;
479 obd->obd_uuid_hash = NULL;
480 obd->obd_nid_hash = NULL;
481 obd->obd_nid_stats_hash = NULL;
482 obd->obd_gen_hash = NULL;
483 spin_unlock(&obd->obd_dev_lock);
485 /* create an uuid-export lustre hash */
486 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
489 HASH_UUID_BKT_BITS, 0,
492 &uuid_hash_ops, CFS_HASH_DEFAULT);
493 if (!obd->obd_uuid_hash)
494 GOTO(err_hash, err = -ENOMEM);
496 /* create a nid-export lustre hash */
497 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
500 HASH_NID_BKT_BITS, 0,
503 &nid_hash_ops, CFS_HASH_DEFAULT);
504 if (!obd->obd_nid_hash)
505 GOTO(err_hash, err = -ENOMEM);
507 /* create a nid-stats lustre hash */
508 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
509 HASH_NID_STATS_CUR_BITS,
510 HASH_NID_STATS_MAX_BITS,
511 HASH_NID_STATS_BKT_BITS, 0,
514 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
515 if (!obd->obd_nid_stats_hash)
516 GOTO(err_hash, err = -ENOMEM);
518 /* create a client_generation-export lustre hash */
519 obd->obd_gen_hash = cfs_hash_create("UUID_HASH",
522 HASH_GEN_BKT_BITS, 0,
525 &gen_hash_ops, CFS_HASH_DEFAULT);
526 if (!obd->obd_gen_hash)
527 GOTO(err_hash, err = -ENOMEM);
529 exp = class_new_export(obd, &obd->obd_uuid);
531 GOTO(err_hash, err = PTR_ERR(exp));
533 obd->obd_self_export = exp;
534 list_del_init(&exp->exp_obd_chain_timed);
535 class_export_put(exp);
537 err = obd_setup(obd, lcfg);
543 spin_lock(&obd->obd_dev_lock);
544 /* cleanup drops this */
545 class_incref(obd, "setup", obd);
546 spin_unlock(&obd->obd_dev_lock);
548 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
549 obd->obd_name, obd->obd_uuid.uuid);
553 if (obd->obd_self_export) {
554 class_unlink_export(obd->obd_self_export);
555 obd->obd_self_export = NULL;
558 if (obd->obd_uuid_hash) {
559 cfs_hash_putref(obd->obd_uuid_hash);
560 obd->obd_uuid_hash = NULL;
562 if (obd->obd_nid_hash) {
563 cfs_hash_putref(obd->obd_nid_hash);
564 obd->obd_nid_hash = NULL;
566 if (obd->obd_nid_stats_hash) {
567 cfs_hash_putref(obd->obd_nid_stats_hash);
568 obd->obd_nid_stats_hash = NULL;
570 if (obd->obd_gen_hash) {
571 cfs_hash_putref(obd->obd_gen_hash);
572 obd->obd_gen_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;
634 spin_unlock(&obd->obd_dev_lock);
636 /* wait for already-arrived-connections to finish. */
637 while (obd->obd_conn_inprogress > 0)
641 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
642 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
648 LCONSOLE_WARN("Failing over %s\n",
651 obd->obd_no_transno = 1;
652 obd->obd_no_recov = 1;
653 if (OBP(obd, iocontrol)) {
654 obd_iocontrol(OBD_IOC_SYNC,
655 obd->obd_self_export,
660 CERROR("Unrecognised flag '%c'\n", *flag);
664 LASSERT(obd->obd_self_export);
666 /* The three references that should be remaining are the
667 * obd_self_export and the attach and setup references. */
668 if (atomic_read(&obd->obd_refcount) > 3) {
669 /* refcounf - 3 might be the number of real exports
670 (excluding self export). But class_incref is called
671 by other things as well, so don't count on it. */
672 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
673 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
674 dump_exports(obd, 0);
675 class_disconnect_exports(obd);
678 /* Precleanup, we must make sure all exports get destroyed. */
679 err = obd_precleanup(obd);
681 CERROR("Precleanup %s returned %d\n",
684 /* destroy an uuid-export hash body */
685 if (obd->obd_uuid_hash) {
686 cfs_hash_putref(obd->obd_uuid_hash);
687 obd->obd_uuid_hash = NULL;
690 /* destroy a nid-export hash body */
691 if (obd->obd_nid_hash) {
692 cfs_hash_putref(obd->obd_nid_hash);
693 obd->obd_nid_hash = NULL;
696 /* destroy a nid-stats hash body */
697 if (obd->obd_nid_stats_hash) {
698 cfs_hash_putref(obd->obd_nid_stats_hash);
699 obd->obd_nid_stats_hash = NULL;
702 /* destroy a client_generation-export hash body */
703 if (obd->obd_gen_hash) {
704 cfs_hash_putref(obd->obd_gen_hash);
705 obd->obd_gen_hash = NULL;
708 class_decref(obd, "setup", obd);
714 struct obd_device *class_incref(struct obd_device *obd,
715 const char *scope, const void *source)
717 lu_ref_add_atomic(&obd->obd_reference, scope, source);
718 atomic_inc(&obd->obd_refcount);
719 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
720 atomic_read(&obd->obd_refcount));
724 EXPORT_SYMBOL(class_incref);
726 void class_decref(struct obd_device *obd, const char *scope, const void *source)
731 spin_lock(&obd->obd_dev_lock);
732 atomic_dec(&obd->obd_refcount);
733 refs = atomic_read(&obd->obd_refcount);
734 spin_unlock(&obd->obd_dev_lock);
735 lu_ref_del(&obd->obd_reference, scope, source);
737 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
739 if ((refs == 1) && obd->obd_stopping) {
740 /* All exports have been destroyed; there should
741 be no more in-progress ops by this point.*/
743 spin_lock(&obd->obd_self_export->exp_lock);
744 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
745 spin_unlock(&obd->obd_self_export->exp_lock);
747 /* note that we'll recurse into class_decref again */
748 class_unlink_export(obd->obd_self_export);
753 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
754 obd->obd_name, obd->obd_uuid.uuid);
755 LASSERT(!obd->obd_attached);
756 if (obd->obd_stopping) {
757 /* If we're not stopping, we were never set up */
758 err = obd_cleanup(obd);
760 CERROR("Cleanup %s returned %d\n",
764 class_release_dev(obd);
767 EXPORT_SYMBOL(class_decref);
769 /** Add a failover nid location.
770 * Client obd types contact server obd types using this nid list.
772 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
774 struct obd_import *imp;
775 struct obd_uuid uuid;
779 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
780 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
781 CERROR("invalid conn_uuid\n");
784 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
785 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
786 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
787 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
788 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
789 CERROR("can't add connection on non-client dev\n");
793 imp = obd->u.cli.cl_import;
795 CERROR("try to add conn on immature client dev\n");
799 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
800 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
805 /** Remove a failover nid location.
807 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
809 struct obd_import *imp;
810 struct obd_uuid uuid;
814 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
815 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
816 CERROR("invalid conn_uuid\n");
819 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
820 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
821 CERROR("can't del connection on non-client dev\n");
825 imp = obd->u.cli.cl_import;
827 CERROR("try to del conn on immature client dev\n");
831 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
832 rc = obd_del_conn(imp, &uuid);
837 static struct list_head lustre_profile_list =
838 LIST_HEAD_INIT(lustre_profile_list);
839 static DEFINE_SPINLOCK(lustre_profile_list_lock);
841 struct lustre_profile *class_get_profile(const char * prof)
843 struct lustre_profile *lprof;
846 spin_lock(&lustre_profile_list_lock);
847 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
848 if (!strcmp(lprof->lp_profile, prof)) {
850 spin_unlock(&lustre_profile_list_lock);
854 spin_unlock(&lustre_profile_list_lock);
857 EXPORT_SYMBOL(class_get_profile);
859 /** Create a named "profile".
860 * This defines the mdc and osc names to use for a client.
861 * This also is used to define the lov to be used by a mdt.
863 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
864 int mdclen, char *mdc)
866 struct lustre_profile *lprof;
870 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
872 OBD_ALLOC(lprof, sizeof(*lprof));
875 INIT_LIST_HEAD(&lprof->lp_list);
877 LASSERT(proflen == (strlen(prof) + 1));
878 OBD_ALLOC(lprof->lp_profile, proflen);
879 if (lprof->lp_profile == NULL)
880 GOTO(out, err = -ENOMEM);
881 memcpy(lprof->lp_profile, prof, proflen);
883 LASSERT(osclen == (strlen(osc) + 1));
884 OBD_ALLOC(lprof->lp_dt, osclen);
885 if (lprof->lp_dt == NULL)
886 GOTO(out, err = -ENOMEM);
887 memcpy(lprof->lp_dt, osc, osclen);
890 LASSERT(mdclen == (strlen(mdc) + 1));
891 OBD_ALLOC(lprof->lp_md, mdclen);
892 if (lprof->lp_md == NULL)
893 GOTO(out, err = -ENOMEM);
894 memcpy(lprof->lp_md, mdc, mdclen);
897 spin_lock(&lustre_profile_list_lock);
899 lprof->lp_list_deleted = false;
901 list_add(&lprof->lp_list, &lustre_profile_list);
902 spin_unlock(&lustre_profile_list_lock);
907 OBD_FREE(lprof->lp_md, mdclen);
909 OBD_FREE(lprof->lp_dt, osclen);
910 if (lprof->lp_profile)
911 OBD_FREE(lprof->lp_profile, proflen);
912 OBD_FREE(lprof, sizeof(*lprof));
916 void class_del_profile(const char *prof)
918 struct lustre_profile *lprof;
921 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
923 lprof = class_get_profile(prof);
925 spin_lock(&lustre_profile_list_lock);
926 /* because get profile increments the ref counter */
928 list_del(&lprof->lp_list);
929 lprof->lp_list_deleted = true;
930 spin_unlock(&lustre_profile_list_lock);
932 class_put_profile(lprof);
936 EXPORT_SYMBOL(class_del_profile);
938 void class_put_profile(struct lustre_profile *lprof)
940 spin_lock(&lustre_profile_list_lock);
941 if ((--lprof->lp_refs) > 0) {
942 LASSERT(lprof->lp_refs > 0);
943 spin_unlock(&lustre_profile_list_lock);
946 spin_unlock(&lustre_profile_list_lock);
948 /* confirm not a negative number */
949 LASSERT(lprof->lp_refs == 0);
951 /* At least one class_del_profile/profiles must be called
952 * on the target profile or lustre_profile_list will corrupt */
953 LASSERT(lprof->lp_list_deleted);
954 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
955 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
956 if (lprof->lp_md != NULL)
957 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
958 OBD_FREE(lprof, sizeof(*lprof));
960 EXPORT_SYMBOL(class_put_profile);
963 void class_del_profiles(void)
965 struct lustre_profile *lprof, *n;
968 spin_lock(&lustre_profile_list_lock);
969 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
970 list_del(&lprof->lp_list);
971 lprof->lp_list_deleted = true;
972 spin_unlock(&lustre_profile_list_lock);
974 class_put_profile(lprof);
976 spin_lock(&lustre_profile_list_lock);
978 spin_unlock(&lustre_profile_list_lock);
981 EXPORT_SYMBOL(class_del_profiles);
983 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
986 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
988 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
990 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
992 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
993 at_early_margin = val;
994 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
996 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
997 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
998 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
1002 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
1007 /* We can't call ll_process_config or lquota_process_config directly because
1008 * it lives in a module that must be loaded after this one. */
1009 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
1010 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
1012 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
1014 client_process_config = cpc;
1016 EXPORT_SYMBOL(lustre_register_client_process_config);
1019 * Rename the proc parameter in \a cfg with a new name \a new_name.
1021 * \param cfg config structure which contains the proc parameter
1022 * \param new_name new name of the proc parameter
1024 * \retval valid-pointer pointer to the newly-allocated config structure
1025 * which contains the renamed proc parameter
1026 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
1027 * not contain a proc parameter
1028 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
1030 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
1031 const char *new_name)
1033 struct lustre_cfg_bufs *bufs = NULL;
1034 struct lustre_cfg *new_cfg = NULL;
1036 char *new_param = NULL;
1042 if (cfg == NULL || new_name == NULL)
1043 RETURN(ERR_PTR(-EINVAL));
1045 param = lustre_cfg_string(cfg, 1);
1047 RETURN(ERR_PTR(-EINVAL));
1049 value = strchr(param, '=');
1051 name_len = strlen(param);
1053 name_len = value - param;
1055 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1057 OBD_ALLOC(new_param, new_len);
1058 if (new_param == NULL)
1059 RETURN(ERR_PTR(-ENOMEM));
1061 strcpy(new_param, new_name);
1063 strcat(new_param, value);
1065 OBD_ALLOC_PTR(bufs);
1067 OBD_FREE(new_param, new_len);
1068 RETURN(ERR_PTR(-ENOMEM));
1071 lustre_cfg_bufs_reset(bufs, NULL);
1072 lustre_cfg_bufs_init(bufs, cfg);
1073 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1075 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
1076 OBD_FREE(new_param, new_len);
1078 if (new_cfg == NULL)
1079 RETURN(ERR_PTR(-ENOMEM));
1081 new_cfg->lcfg_num = cfg->lcfg_num;
1082 new_cfg->lcfg_flags = cfg->lcfg_flags;
1083 new_cfg->lcfg_nid = cfg->lcfg_nid;
1084 new_cfg->lcfg_nal = cfg->lcfg_nal;
1088 EXPORT_SYMBOL(lustre_cfg_rename);
1090 static int process_param2_config(struct lustre_cfg *lcfg)
1092 char *param = lustre_cfg_string(lcfg, 1);
1093 char *upcall = lustre_cfg_string(lcfg, 2);
1095 [0] = "/usr/sbin/lctl",
1100 struct timeval start;
1105 /* Add upcall processing here. Now only lctl is supported */
1106 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1107 CERROR("Unsupported upcall %s\n", upcall);
1111 do_gettimeofday(&start);
1112 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1113 do_gettimeofday(&end);
1116 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1117 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1118 cfs_timeval_sub(&end, &start, NULL));
1120 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1121 argv[0], argv[1], argv[2],
1122 cfs_timeval_sub(&end, &start, NULL));
1129 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1131 quota_process_config = qpc;
1133 EXPORT_SYMBOL(lustre_register_quota_process_config);
1135 /** Process configuration commands given in lustre_cfg form.
1136 * These may come from direct calls (e.g. class_manual_cleanup)
1137 * or processing the config llog, or ioctl from lctl.
1139 int class_process_config(struct lustre_cfg *lcfg)
1141 struct obd_device *obd;
1144 LASSERT(lcfg && !IS_ERR(lcfg));
1145 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1147 /* Commands that don't need a device */
1148 switch(lcfg->lcfg_command) {
1150 err = class_attach(lcfg);
1153 case LCFG_ADD_UUID: {
1154 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1155 " (%s)\n", lustre_cfg_string(lcfg, 1),
1156 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1158 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1161 case LCFG_DEL_UUID: {
1162 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1163 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1164 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1166 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1169 case LCFG_MOUNTOPT: {
1170 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1171 lustre_cfg_string(lcfg, 1),
1172 lustre_cfg_string(lcfg, 2),
1173 lustre_cfg_string(lcfg, 3));
1174 /* set these mount options somewhere, so ll_fill_super
1176 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1177 lustre_cfg_string(lcfg, 1),
1178 LUSTRE_CFG_BUFLEN(lcfg, 2),
1179 lustre_cfg_string(lcfg, 2),
1180 LUSTRE_CFG_BUFLEN(lcfg, 3),
1181 lustre_cfg_string(lcfg, 3));
1184 case LCFG_DEL_MOUNTOPT: {
1185 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1186 lustre_cfg_string(lcfg, 1));
1187 class_del_profile(lustre_cfg_string(lcfg, 1));
1190 case LCFG_SET_TIMEOUT: {
1191 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1192 obd_timeout, lcfg->lcfg_num);
1193 obd_timeout = max(lcfg->lcfg_num, 1U);
1194 obd_timeout_set = 1;
1197 case LCFG_SET_LDLM_TIMEOUT: {
1198 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1199 ldlm_timeout, lcfg->lcfg_num);
1200 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1201 if (ldlm_timeout >= obd_timeout)
1202 ldlm_timeout = max(obd_timeout / 3, 1U);
1203 ldlm_timeout_set = 1;
1206 case LCFG_SET_UPCALL: {
1207 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1208 /* COMPAT_146 Don't fail on old configs */
1212 struct cfg_marker *marker;
1213 marker = lustre_cfg_buf(lcfg, 1);
1214 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1215 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1220 /* llite has no obd */
1221 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1222 PARAM_LLITE, NULL) == 0) &&
1223 client_process_config) {
1224 err = (*client_process_config)(lcfg);
1226 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1227 PARAM_SYS, &tmp) == 0)) {
1228 /* Global param settings */
1229 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
1231 * Client or server should not fail to mount if
1232 * it hits an unknown configuration parameter.
1235 CWARN("Ignoring unknown param %s\n", tmp);
1238 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1239 PARAM_QUOTA, &tmp) == 0) &&
1240 quota_process_config) {
1241 err = (*quota_process_config)(lcfg);
1247 case LCFG_SET_PARAM: {
1248 err = process_param2_config(lcfg);
1252 /* Commands that require a device */
1253 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1255 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1256 CERROR("this lcfg command requires a device name\n");
1258 CERROR("no device for: %s\n",
1259 lustre_cfg_string(lcfg, 0));
1261 GOTO(out, err = -EINVAL);
1264 switch(lcfg->lcfg_command) {
1266 err = class_setup(obd, lcfg);
1270 err = class_detach(obd, lcfg);
1273 case LCFG_CLEANUP: {
1274 err = class_cleanup(obd, lcfg);
1277 case LCFG_ADD_CONN: {
1278 err = class_add_conn(obd, lcfg);
1281 case LCFG_DEL_CONN: {
1282 err = class_del_conn(obd, lcfg);
1285 case LCFG_POOL_NEW: {
1286 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1289 case LCFG_POOL_ADD: {
1290 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1291 lustre_cfg_string(lcfg, 3));
1294 case LCFG_POOL_REM: {
1295 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1296 lustre_cfg_string(lcfg, 3));
1299 case LCFG_POOL_DEL: {
1300 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1304 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1310 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1311 CWARN("Ignoring error %d on optional command %#x\n", err,
1312 lcfg->lcfg_command);
1317 EXPORT_SYMBOL(class_process_config);
1319 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1320 struct lustre_cfg *lcfg, void *data)
1322 struct lprocfs_vars *var;
1323 struct file fakefile;
1324 struct seq_file fake_seqfile;
1326 int i, keylen, vallen;
1327 int matched = 0, j = 0;
1332 if (lcfg->lcfg_command != LCFG_PARAM) {
1333 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1337 /* fake a seq file so that var->fops->write can work... */
1338 fakefile.private_data = &fake_seqfile;
1339 fake_seqfile.private = data;
1340 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1341 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1342 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1343 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1344 key = lustre_cfg_buf(lcfg, i);
1345 /* Strip off prefix */
1346 if (class_match_param(key, prefix, &key))
1347 /* If the prefix doesn't match, return error so we
1348 * can pass it down the stack */
1350 sval = strchr(key, '=');
1351 if (!sval || (*(sval + 1) == 0)) {
1352 CERROR("Can't parse param %s (missing '=')\n", key);
1353 /* rc = -EINVAL; continue parsing other params */
1356 keylen = sval - key;
1358 vallen = strlen(sval);
1361 /* Search proc entries */
1362 while (lvars[j].name) {
1364 if (class_match_param(key, var->name, NULL) == 0 &&
1365 keylen == strlen(var->name)) {
1369 if (var->fops && var->fops->write) {
1373 rc = (var->fops->write)(&fakefile, sval,
1382 CERROR("%.*s: %s unknown param %s\n",
1383 (int)strlen(prefix) - 1, prefix,
1384 (char *)lustre_cfg_string(lcfg, 0), key);
1385 /* rc = -EINVAL; continue parsing other params */
1387 } else if (rc < 0) {
1388 CERROR("%s: error writing proc entry '%s': rc = %d\n",
1389 prefix, var->name, rc);
1392 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1393 lustre_cfg_string(lcfg, 0),
1394 (int)strlen(prefix) - 1, prefix,
1395 (int)(sval - key - 1), key, sval);
1405 EXPORT_SYMBOL(class_process_proc_param);
1408 * Supplemental functions for config logs, it allocates lustre_cfg
1409 * buffers plus initialized llog record header at the beginning.
1411 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1413 struct llog_cfg_rec *lcr;
1418 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1419 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1420 sizeof(struct llog_rec_tail);
1422 OBD_ALLOC(lcr, reclen);
1426 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1428 lcr->lcr_hdr.lrh_len = reclen;
1429 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1433 EXPORT_SYMBOL(lustre_cfg_rec_new);
1435 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1438 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1441 EXPORT_SYMBOL(lustre_cfg_rec_free);
1443 /** Parse a configuration llog, doing various manipulations on them
1444 * for various reasons, (modifications for compatibility, skip obsolete
1445 * records, change uuids, etc), then class_process_config() resulting
1448 int class_config_llog_handler(const struct lu_env *env,
1449 struct llog_handle *handle,
1450 struct llog_rec_hdr *rec, void *data)
1452 struct config_llog_instance *clli = data;
1453 int cfg_len = rec->lrh_len;
1454 char *cfg_buf = (char*) (rec + 1);
1458 //class_config_dump_handler(handle, rec, data);
1460 switch (rec->lrh_type) {
1462 struct lustre_cfg *lcfg, *lcfg_new;
1463 struct lustre_cfg_bufs bufs;
1464 char *inst_name = NULL;
1466 int inst = 0, swab = 0;
1468 lcfg = (struct lustre_cfg *)cfg_buf;
1469 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1470 lustre_swab_lustre_cfg(lcfg);
1474 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1478 /* Figure out config state info */
1479 if (lcfg->lcfg_command == LCFG_MARKER) {
1480 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1481 lustre_swab_cfg_marker(marker, swab,
1482 LUSTRE_CFG_BUFLEN(lcfg, 1));
1483 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1484 clli->cfg_flags, marker->cm_flags);
1485 if (marker->cm_flags & CM_START) {
1486 /* all previous flags off */
1487 clli->cfg_flags = CFG_F_MARKER;
1488 server_name2index(marker->cm_tgtname,
1489 &clli->cfg_lwp_idx, NULL);
1490 if (marker->cm_flags & CM_SKIP) {
1491 clli->cfg_flags |= CFG_F_SKIP;
1492 CDEBUG(D_CONFIG, "SKIP #%d\n",
1494 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1496 lustre_check_exclusion(clli->cfg_sb,
1497 marker->cm_tgtname))) {
1498 clli->cfg_flags |= CFG_F_EXCLUDE;
1499 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1502 } else if (marker->cm_flags & CM_END) {
1503 clli->cfg_flags = 0;
1506 /* A config command without a start marker before it is
1507 illegal (post 146) */
1508 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1509 !(clli->cfg_flags & CFG_F_MARKER) &&
1510 (lcfg->lcfg_command != LCFG_MARKER)) {
1511 CWARN("Config not inside markers, ignoring! "
1512 "(inst: %p, uuid: %s, flags: %#x)\n",
1514 clli->cfg_uuid.uuid, clli->cfg_flags);
1515 clli->cfg_flags |= CFG_F_SKIP;
1517 if (clli->cfg_flags & CFG_F_SKIP) {
1518 CDEBUG(D_CONFIG, "skipping %#x\n",
1521 /* No processing! */
1526 * For interoperability between 1.8 and 2.0,
1527 * rename "mds" obd device type to "mdt".
1530 char *typename = lustre_cfg_string(lcfg, 1);
1531 char *index = lustre_cfg_string(lcfg, 2);
1533 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1534 strcmp(typename, "mds") == 0)) {
1535 CWARN("For 1.8 interoperability, rename obd "
1536 "type from mds to mdt\n");
1539 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1540 strcmp(index, "type") == 0)) {
1541 CDEBUG(D_INFO, "For 1.8 interoperability, "
1542 "set this index to '0'\n");
1548 #ifdef HAVE_SERVER_SUPPORT
1549 /* newer MDS replaces LOV/OSC with LOD/OSP */
1551 char *typename = lustre_cfg_string(lcfg, 1);
1553 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1554 strcmp(typename, LUSTRE_LOV_NAME) == 0) &&
1555 IS_MDT(s2lsi(clli->cfg_sb))) {
1557 "For 2.x interoperability, rename obd "
1558 "type from lov to lod (%s)\n",
1559 s2lsi(clli->cfg_sb)->lsi_svname);
1560 strcpy(typename, LUSTRE_LOD_NAME);
1562 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1563 strcmp(typename, LUSTRE_OSC_NAME) == 0) &&
1564 IS_MDT(s2lsi(clli->cfg_sb))) {
1566 "For 2.x interoperability, rename obd "
1567 "type from osc to osp (%s)\n",
1568 s2lsi(clli->cfg_sb)->lsi_svname);
1569 strcpy(typename, LUSTRE_OSP_NAME);
1572 #endif /* HAVE_SERVER_SUPPORT */
1574 if (clli->cfg_flags & CFG_F_EXCLUDE) {
1575 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1576 lcfg->lcfg_command);
1577 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1578 /* Add inactive instead */
1579 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1582 lustre_cfg_bufs_init(&bufs, lcfg);
1584 if (clli && clli->cfg_instance &&
1585 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1587 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1588 sizeof(clli->cfg_instance) * 2 + 4;
1589 OBD_ALLOC(inst_name, inst_len);
1590 if (inst_name == NULL)
1591 GOTO(out, rc = -ENOMEM);
1592 sprintf(inst_name, "%s-%p",
1593 lustre_cfg_string(lcfg, 0),
1594 clli->cfg_instance);
1595 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1596 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1597 lcfg->lcfg_command, inst_name);
1600 /* we override the llog's uuid for clients, to insure they
1602 if (clli && clli->cfg_instance != NULL &&
1603 lcfg->lcfg_command == LCFG_ATTACH) {
1604 lustre_cfg_bufs_set_string(&bufs, 2,
1605 clli->cfg_uuid.uuid);
1608 * sptlrpc config record, we expect 2 data segments:
1609 * [0]: fs_name/target_name,
1611 * moving them to index [1] and [2], and insert MGC's
1612 * obdname at index [0].
1614 if (clli && clli->cfg_instance == NULL &&
1615 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1616 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1617 bufs.lcfg_buflen[1]);
1618 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1619 bufs.lcfg_buflen[0]);
1620 lustre_cfg_bufs_set_string(&bufs, 0,
1624 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1625 if (lcfg_new == NULL)
1626 GOTO(out, rc = -ENOMEM);
1628 lcfg_new->lcfg_num = lcfg->lcfg_num;
1629 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1631 /* XXX Hack to try to remain binary compatible with
1632 * pre-newconfig logs */
1633 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1634 (lcfg->lcfg_nid >> 32) == 0) {
1635 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1637 lcfg_new->lcfg_nid =
1638 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1639 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1640 lcfg->lcfg_nal, addr,
1641 libcfs_nid2str(lcfg_new->lcfg_nid));
1643 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1646 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1648 rc = class_process_config(lcfg_new);
1649 lustre_cfg_free(lcfg_new);
1652 OBD_FREE(inst_name, inst_len);
1656 CERROR("Unknown llog record type %#x encountered\n",
1662 CERROR("%s: cfg command failed: rc = %d\n",
1663 handle->lgh_ctxt->loc_obd->obd_name, rc);
1664 class_config_dump_handler(NULL, handle, rec, data);
1668 EXPORT_SYMBOL(class_config_llog_handler);
1670 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1671 char *name, struct config_llog_instance *cfg)
1673 struct llog_process_cat_data cd = {0, 0};
1674 struct llog_handle *llh;
1679 CDEBUG(D_INFO, "looking up llog %s\n", name);
1680 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1684 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1686 GOTO(parse_out, rc);
1688 /* continue processing from where we last stopped to end-of-log */
1690 cd.lpcd_first_idx = cfg->cfg_last_idx;
1691 callback = cfg->cfg_callback;
1692 LASSERT(callback != NULL);
1694 callback = class_config_llog_handler;
1697 cd.lpcd_last_idx = 0;
1699 rc = llog_process(env, llh, callback, cfg, &cd);
1701 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1702 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1704 cfg->cfg_last_idx = cd.lpcd_last_idx;
1707 llog_close(env, llh);
1710 EXPORT_SYMBOL(class_config_parse_llog);
1712 static struct lcfg_type_data {
1716 } lcfg_data_table[] = {
1717 { LCFG_ATTACH, "attach", { "type", "UUID", "3", "4" } },
1718 { LCFG_DETACH, "detach", { "1", "2", "3", "4" } },
1719 { LCFG_SETUP, "setup", { "UUID", "node", "options", "failout" } },
1720 { LCFG_CLEANUP, "cleanup", { "1", "2", "3", "4" } },
1721 { LCFG_ADD_UUID, "add_uuid", { "node", "2", "3", "4" } },
1722 { LCFG_DEL_UUID, "del_uuid", { "1", "2", "3", "4" } },
1723 { LCFG_MOUNTOPT, "new_profile", { "name", "lov", "lmv", "4" } },
1724 { LCFG_DEL_MOUNTOPT, "del_mountopt", { "1", "2", "3", "4" } , },
1725 { LCFG_SET_TIMEOUT, "set_timeout", { "parameter", "2", "3", "4" } },
1726 { LCFG_SET_UPCALL, "set_upcall", { "1", "2", "3", "4" } },
1727 { LCFG_ADD_CONN, "add_conn", { "node", "2", "3", "4" } },
1728 { LCFG_DEL_CONN, "del_conn", { "1", "2", "3", "4" } },
1729 { LCFG_LOV_ADD_OBD, "add_osc", { "ost", "index", "gen", "UUID" } },
1730 { LCFG_LOV_DEL_OBD, "del_osc", { "1", "2", "3", "4" } },
1731 { LCFG_PARAM, "set_param", { "parameter", "value", "3", "4" } },
1732 { LCFG_MARKER, "marker", { "1", "2", "3", "4" } },
1733 { LCFG_LOG_START, "log_start", { "1", "2", "3", "4" } },
1734 { LCFG_LOG_END, "log_end", { "1", "2", "3", "4" } },
1735 { LCFG_LOV_ADD_INA, "add_osc_inactive", { "1", "2", "3", "4" } },
1736 { LCFG_ADD_MDC, "add_mdc", { "mdt", "index", "gen", "UUID" } },
1737 { LCFG_DEL_MDC, "del_mdc", { "1", "2", "3", "4" } },
1738 { LCFG_SPTLRPC_CONF, "security", { "parameter", "2", "3", "4" } },
1739 { LCFG_POOL_NEW, "new_pool", { "fsname", "pool", "3", "4" } },
1740 { LCFG_POOL_ADD, "add_pool", { "fsname", "pool", "ost", "4" } },
1741 { LCFG_POOL_REM, "remove_pool", { "fsname", "pool", "ost", "4" } },
1742 { LCFG_POOL_DEL, "del_pool", { "fsname", "pool", "3", "4" } },
1743 { LCFG_SET_LDLM_TIMEOUT, "set_ldlm_timeout",
1744 { "parameter", "2", "3", "4" } },
1745 { 0, NULL, { NULL, NULL, NULL, NULL } }
1748 static struct lcfg_type_data *lcfg_cmd2data(__u32 cmd)
1752 while (lcfg_data_table[i].ltd_type != 0) {
1753 if (lcfg_data_table[i].ltd_type == cmd)
1754 return &lcfg_data_table[i];
1761 * parse config record and output dump in supplied buffer.
1762 * This is separated from class_config_dump_handler() to use
1763 * for ioctl needs as well
1766 * - { event: attach, device: lustrewt-clilov, type: lov, UUID:
1767 * lustrewt-clilov_UUID }
1769 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size)
1771 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1773 char *end = buf + size;
1775 struct lcfg_type_data *ldata;
1777 LASSERT(rec->lrh_type == OBD_CFG_REC);
1778 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1782 ldata = lcfg_cmd2data(lcfg->lcfg_command);
1786 if (lcfg->lcfg_command == LCFG_MARKER)
1789 /* form YAML entity */
1790 ptr += snprintf(ptr, end - ptr, "- { event: %s", ldata->ltd_name);
1792 if (lcfg->lcfg_flags)
1793 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
1796 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
1798 if (lcfg->lcfg_nid) {
1799 char nidstr[LNET_NIDSTR_SIZE];
1801 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1802 ptr += snprintf(ptr, end - ptr, ", nid: %s("LPX64")",
1803 nidstr, lcfg->lcfg_nid);
1806 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0)
1807 ptr += snprintf(ptr, end - ptr, ", device: %s",
1808 lustre_cfg_string(lcfg, 0));
1810 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1811 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0)
1812 ptr += snprintf(ptr, end - ptr, ", %s: %s",
1813 ldata->ltd_bufs[i - 1],
1814 lustre_cfg_string(lcfg, i));
1817 ptr += snprintf(ptr, end - ptr, " }\n");
1818 /* return consumed bytes */
1824 * parse config record and output dump in supplied buffer.
1825 * This is separated from class_config_dump_handler() to use
1826 * for ioctl needs as well
1828 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
1830 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1832 char *end = buf + size;
1837 LASSERT(rec->lrh_type == OBD_CFG_REC);
1838 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1842 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
1843 if (lcfg->lcfg_flags)
1844 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1848 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
1850 if (lcfg->lcfg_nid) {
1851 char nidstr[LNET_NIDSTR_SIZE];
1853 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1854 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1855 nidstr, lcfg->lcfg_nid);
1858 if (lcfg->lcfg_command == LCFG_MARKER) {
1859 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1861 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1862 marker->cm_step, marker->cm_flags,
1863 marker->cm_tgtname, marker->cm_comment);
1867 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1868 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1869 lustre_cfg_string(lcfg, i));
1872 ptr += snprintf(ptr, end - ptr, "\n");
1873 /* return consumed bytes */
1878 int class_config_dump_handler(const struct lu_env *env,
1879 struct llog_handle *handle,
1880 struct llog_rec_hdr *rec, void *data)
1887 OBD_ALLOC(outstr, 256);
1891 if (rec->lrh_type == OBD_CFG_REC) {
1892 class_config_parse_rec(rec, outstr, 256);
1893 LCONSOLE(D_WARNING, " %s\n", outstr);
1895 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1899 OBD_FREE(outstr, 256);
1903 /** Call class_cleanup and class_detach.
1904 * "Manual" only in the sense that we're faking lcfg commands.
1906 int class_manual_cleanup(struct obd_device *obd)
1909 struct lustre_cfg *lcfg;
1910 struct lustre_cfg_bufs bufs;
1915 CERROR("empty cleanup\n");
1924 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1925 obd->obd_name, flags);
1927 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1928 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1929 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1933 rc = class_process_config(lcfg);
1935 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1939 /* the lcfg is almost the same for both ops */
1940 lcfg->lcfg_command = LCFG_DETACH;
1941 rc = class_process_config(lcfg);
1943 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1945 lustre_cfg_free(lcfg);
1948 EXPORT_SYMBOL(class_manual_cleanup);
1951 * uuid<->export lustre hash operations
1955 uuid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
1957 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1958 sizeof(((struct obd_uuid *)key)->uuid), mask);
1962 uuid_key(struct hlist_node *hnode)
1964 struct obd_export *exp;
1966 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1968 return &exp->exp_client_uuid;
1972 * NOTE: It is impossible to find an export that is in failed
1973 * state with this function
1976 uuid_keycmp(const void *key, struct hlist_node *hnode)
1978 struct obd_export *exp;
1981 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1983 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1988 uuid_export_object(struct hlist_node *hnode)
1990 return hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1994 uuid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
1996 struct obd_export *exp;
1998 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1999 class_export_get(exp);
2003 uuid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2005 struct obd_export *exp;
2007 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2008 class_export_put(exp);
2011 static struct cfs_hash_ops uuid_hash_ops = {
2012 .hs_hash = uuid_hash,
2014 .hs_keycmp = uuid_keycmp,
2015 .hs_object = uuid_export_object,
2016 .hs_get = uuid_export_get,
2017 .hs_put_locked = uuid_export_put_locked,
2022 * nid<->export hash operations
2026 nid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2028 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
2032 nid_key(struct hlist_node *hnode)
2034 struct obd_export *exp;
2036 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2038 RETURN(&exp->exp_connection->c_peer.nid);
2042 * NOTE: It is impossible to find an export that is in failed
2043 * state with this function
2046 nid_kepcmp(const void *key, struct hlist_node *hnode)
2048 struct obd_export *exp;
2051 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2053 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
2058 nid_export_object(struct hlist_node *hnode)
2060 return hlist_entry(hnode, struct obd_export, exp_nid_hash);
2064 nid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2066 struct obd_export *exp;
2068 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2069 class_export_get(exp);
2073 nid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2075 struct obd_export *exp;
2077 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2078 class_export_put(exp);
2081 static struct cfs_hash_ops nid_hash_ops = {
2082 .hs_hash = nid_hash,
2084 .hs_keycmp = nid_kepcmp,
2085 .hs_object = nid_export_object,
2086 .hs_get = nid_export_get,
2087 .hs_put_locked = nid_export_put_locked,
2092 * nid<->nidstats hash operations
2096 nidstats_key(struct hlist_node *hnode)
2098 struct nid_stat *ns;
2100 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2106 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2108 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
2112 nidstats_object(struct hlist_node *hnode)
2114 return hlist_entry(hnode, struct nid_stat, nid_hash);
2118 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2120 struct nid_stat *ns;
2122 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2127 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2129 struct nid_stat *ns;
2131 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2135 static struct cfs_hash_ops nid_stat_hash_ops = {
2136 .hs_hash = nid_hash,
2137 .hs_key = nidstats_key,
2138 .hs_keycmp = nidstats_keycmp,
2139 .hs_object = nidstats_object,
2140 .hs_get = nidstats_get,
2141 .hs_put_locked = nidstats_put_locked,
2146 * client_generation<->export hash operations
2150 gen_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2152 return cfs_hash_djb2_hash(key, sizeof(__u32), mask);
2156 gen_key(struct hlist_node *hnode)
2158 struct obd_export *exp;
2160 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2162 RETURN(&exp->exp_target_data.ted_lcd->lcd_generation);
2166 * NOTE: It is impossible to find an export that is in failed
2167 * state with this function
2170 gen_kepcmp(const void *key, struct hlist_node *hnode)
2172 struct obd_export *exp;
2175 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2177 RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key &&
2182 gen_export_object(struct hlist_node *hnode)
2184 return hlist_entry(hnode, struct obd_export, exp_gen_hash);
2188 gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2190 struct obd_export *exp;
2192 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2193 class_export_get(exp);
2197 gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2199 struct obd_export *exp;
2201 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2202 class_export_put(exp);
2205 static struct cfs_hash_ops gen_hash_ops = {
2206 .hs_hash = gen_hash,
2208 .hs_keycmp = gen_kepcmp,
2209 .hs_object = gen_export_object,
2210 .hs_get = gen_export_get,
2211 .hs_put_locked = gen_export_put_locked,