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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/obdclass/obd_config.c
36 #define DEBUG_SUBSYSTEM S_CLASS
38 #include <linux/kobject.h>
39 #include <linux/string.h>
41 #include <llog_swab.h>
42 #include <lprocfs_status.h>
43 #include <lustre_disk.h>
44 #include <uapi/linux/lustre/lustre_ioctl.h>
45 #include <lustre_log.h>
46 #include <uapi/linux/lustre/lustre_param.h>
47 #include <obd_class.h>
49 #include "llog_internal.h"
51 #ifdef HAVE_SERVER_SUPPORT
52 static struct cfs_hash_ops nid_stat_hash_ops;
53 static struct cfs_hash_ops gen_hash_ops;
54 #endif /* HAVE_SERVER_SUPPORT */
57 * uuid<->export lustre hash operations
60 * NOTE: It is impossible to find an export that is in failed
61 * state with this function
64 uuid_keycmp(struct rhashtable_compare_arg *arg, const void *obj)
66 const struct obd_uuid *uuid = arg->key;
67 const struct obd_export *exp = obj;
69 if (obd_uuid_equals(uuid, &exp->exp_client_uuid) &&
76 obd_export_exit(void *vexport, void *data)
78 struct obd_export *exp = vexport;
80 class_export_put(exp);
83 static const struct rhashtable_params uuid_hash_params = {
84 .key_len = sizeof(struct obd_uuid),
85 .key_offset = offsetof(struct obd_export, exp_client_uuid),
86 .head_offset = offsetof(struct obd_export, exp_uuid_hash),
87 .obj_cmpfn = uuid_keycmp,
88 .automatic_shrinking = true,
91 int obd_uuid_add(struct obd_device *obd, struct obd_export *export)
95 class_export_get(export);
97 rc = rhashtable_lookup_insert_fast(&obd->obd_uuid_hash,
98 &export->exp_uuid_hash,
101 class_export_put(export);
103 /* map obscure error codes to -ENOMEM */
113 EXPORT_SYMBOL(obd_uuid_add);
115 void obd_uuid_del(struct obd_device *obd, struct obd_export *export)
120 rc = rhashtable_remove_fast(&obd->obd_uuid_hash,
121 &export->exp_uuid_hash,
124 class_export_put(export);
127 EXPORT_SYMBOL(obd_uuid_del);
129 #ifdef HAVE_SERVER_SUPPORT
130 /* obd_uuid_lookup() is used only server side by target_handle_connect(),
131 * mdt_hsm_agent_send(), and obd_export_evict_by_uuid().
133 struct obd_export *obd_uuid_lookup(struct obd_device *obd,
134 struct obd_uuid *uuid)
136 struct obd_export *export = NULL;
139 export = rhashtable_lookup_fast(&obd->obd_uuid_hash, uuid,
141 if (export && !refcount_inc_not_zero(&export->exp_handle.h_ref))
147 EXPORT_SYMBOL(obd_uuid_lookup);
150 * nid<->export hash operations
152 static u32 nid_keyhash(const void *data, u32 key_len, u32 seed)
154 const struct obd_export *exp = data;
157 if (!exp->exp_connection)
160 key = &exp->exp_connection->c_peer.nid;
161 return jhash2(key, key_len / sizeof(u32), seed);
165 * NOTE: It is impossible to find an export that is in failed
166 * state with this function
169 nid_keycmp(struct rhashtable_compare_arg *arg, const void *obj)
171 const struct lnet_nid *nid = arg->key;
172 const struct obd_export *exp = obj;
174 if (nid_same(&exp->exp_connection->c_peer.nid, nid))
181 nid_export_exit(void *vexport, void *data)
183 struct obd_export *exp = vexport;
185 class_export_put(exp);
188 static const struct rhashtable_params nid_hash_params = {
189 .key_len = sizeof(struct lnet_nid),
190 .head_offset = offsetof(struct obd_export, exp_nid_hash),
191 .obj_hashfn = nid_keyhash,
192 .obj_cmpfn = nid_keycmp,
193 .automatic_shrinking = true,
196 int obd_nid_add(struct obd_device *obd, struct obd_export *exp)
200 if (exp == exp->exp_obd->obd_self_export || exp->exp_hashed)
203 class_export_get(exp);
204 rc = rhltable_insert_key(&obd->obd_nid_hash,
205 &exp->exp_connection->c_peer.nid,
209 class_export_put(exp);
210 /* map obscure error codes to -ENOMEM */
217 EXPORT_SYMBOL(obd_nid_add);
219 void obd_nid_del(struct obd_device *obd, struct obd_export *exp)
223 if (exp == exp->exp_obd->obd_self_export || !exp->exp_hashed)
226 rc = rhltable_remove(&obd->obd_nid_hash, &exp->exp_nid_hash,
229 class_export_put(exp);
233 EXPORT_SYMBOL(obd_nid_del);
235 int obd_nid_export_for_each(struct obd_device *obd, struct lnet_nid *nid,
236 int cb(struct obd_export *exp, void *data),
239 struct rhlist_head *exports, *tmp;
240 struct obd_export *exp;
244 exports = rhltable_lookup(&obd->obd_nid_hash, nid, nid_hash_params);
250 rhl_for_each_entry_rcu(exp, tmp, exports, exp_nid_hash) {
251 if (!exp->exp_failed && cb(exp, data))
259 EXPORT_SYMBOL(obd_nid_export_for_each);
260 #endif /* HAVE_SERVER_SUPPORT */
262 /*********** string parsing utils *********/
264 /* returns 0 if we find this key in the buffer, else 1 */
265 int class_find_param(char *buf, char *key, char **valp)
272 ptr = strstr(buf, key);
277 *valp = ptr + strlen(key);
281 EXPORT_SYMBOL(class_find_param);
284 * Check whether the proc parameter \a param is an old parameter or not from
285 * the array \a ptr which contains the mapping from old parameters to new ones.
286 * If it's an old one, then return the pointer to the cfg_interop_param struc-
287 * ture which contains both the old and new parameters.
289 * \param param proc parameter
290 * \param ptr an array which contains the mapping from
291 * old parameters to new ones
293 * \retval valid-pointer pointer to the cfg_interop_param structure
294 * which contains the old and new parameters
295 * \retval NULL \a param or \a ptr is NULL,
296 * or \a param is not an old parameter
298 struct cfg_interop_param *class_find_old_param(const char *param,
299 struct cfg_interop_param *ptr)
307 value = strchr(param, '=');
309 name_len = value - param;
311 name_len = strlen(param);
313 while (ptr->old_param) {
314 if (strncmp(param, ptr->old_param, name_len) == 0 &&
315 name_len == strlen(ptr->old_param))
322 EXPORT_SYMBOL(class_find_old_param);
325 * Finds a parameter in \a params and copies it to \a copy.
327 * Leading spaces are skipped. Next space or end of string is the
328 * parameter terminator with the exception that spaces inside single or double
329 * quotes get included into a parameter. The parameter is copied into \a copy
330 * which has to be allocated big enough by a caller, quotes are stripped in
331 * the copy and the copy is terminated by 0.
333 * On return \a params is set to next parameter or to NULL if last
334 * parameter is returned.
336 * \retval 0 if parameter is returned in \a copy
337 * \retval 1 otherwise
338 * \retval -EINVAL if unbalanced quota is found
340 int class_get_next_param(char **params, char *copy)
355 q1 = strpbrk(str, " '\"");
358 memcpy(copy, str, len);
365 memcpy(copy, str, len);
371 memcpy(copy, str, len);
374 /* search for the matching closing quote */
376 q2 = strchr(str, *q1);
378 CERROR("Unbalanced quota in parameters: \"%s\"\n",
383 memcpy(copy, str, len);
389 EXPORT_SYMBOL(class_get_next_param);
392 * returns 0 if this is the first key in the buffer, else 1.
393 * valp points to first char after key.
395 int class_match_param(char *buf, const char *key, char **valp)
400 if (memcmp(buf, key, strlen(key)) != 0)
404 *valp = buf + strlen(key);
408 EXPORT_SYMBOL(class_match_param);
410 static int parse_nid(char *buf, void *value, int quiet)
412 struct lnet_nid *nid = value;
414 if (libcfs_strnid(nid, buf) == 0)
418 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
422 static int parse_net(char *buf, void *value)
424 __u32 *net = (__u32 *)value;
426 *net = libcfs_str2net(buf);
427 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
440 * endh is set to next separator
442 static int class_parse_value(char *buf, int opc, void *value, char **endh,
453 while (*buf == ',' || *buf == ':') {
461 /* IPv6 addresses can start with '::' */
462 if (opc == CLASS_PARSE_NID && ncolons >= 2)
465 if (*buf == ' ' || *buf == '/' || *buf == '\0')
468 /* NID separators or end of NIDs. Large NIDs can contain ':' so
469 * skip ahead to @ and then look for one of the delimiters.
471 if (opc == CLASS_PARSE_NID) {
472 endp = strchr(buf, '@');
476 endp = strpbrk(endp, ",: /");
478 endp = strpbrk(buf, ",: /");
482 endp = buf + strlen(buf);
489 case CLASS_PARSE_NID:
490 rc = parse_nid(buf, value, quiet);
492 case CLASS_PARSE_NET:
493 rc = parse_net(buf, value);
504 int class_parse_nid(char *buf, struct lnet_nid *nid, char **endh)
506 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
508 EXPORT_SYMBOL(class_parse_nid);
510 int class_parse_nid_quiet(char *buf, struct lnet_nid *nid, char **endh)
512 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
514 EXPORT_SYMBOL(class_parse_nid_quiet);
516 int class_parse_net(char *buf, __u32 *net, char **endh)
518 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
522 * 1 param contains key and match
523 * 0 param contains key and not match
524 * -1 param does not contain key
526 int class_match_nid(char *buf, char *key, struct lnet_nid *nid)
531 while (class_find_param(buf, key, &buf) == 0) {
533 * please restrict to the NIDs pertaining to
536 while (class_parse_nid(buf, &tmp, &buf) == 0) {
537 if (nid_same(&tmp, nid))
544 EXPORT_SYMBOL(class_match_nid);
546 int class_match_net(char *buf, char *key, __u32 net)
551 while (class_find_param(buf, key, &buf) == 0) {
553 * please restrict to the NIDs pertaining to
554 * the specified networks
556 while (class_parse_net(buf, &tmp, &buf) == 0) {
564 EXPORT_SYMBOL(class_match_net);
566 char *lustre_cfg_string(struct lustre_cfg *lcfg, u32 index)
570 if (!lcfg->lcfg_buflens[index])
573 s = lustre_cfg_buf(lcfg, index);
578 * make sure it's NULL terminated, even if this kills a char
579 * of data. Try to use the padding first though.
581 if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
582 size_t last = ALIGN(lcfg->lcfg_buflens[index], 8) - 1;
585 /* Use the smaller value */
586 if (last > lcfg->lcfg_buflens[index])
587 last = lcfg->lcfg_buflens[index];
592 CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
598 EXPORT_SYMBOL(lustre_cfg_string);
600 /********************** class fns **********************/
603 * Create a new OBD device and set the type, name and uuid. If successful,
604 * the new device can be accessed by either name or uuid.
606 int class_attach(struct lustre_cfg *lcfg)
608 struct obd_export *exp;
609 struct obd_device *obd = NULL;
610 char *typename, *name, *uuid;
615 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
616 CERROR("No type passed!\n");
619 typename = lustre_cfg_string(lcfg, 1);
621 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
622 CERROR("No name passed!\n");
625 name = lustre_cfg_string(lcfg, 0);
626 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
627 CERROR("No UUID passed!\n");
631 uuid = lustre_cfg_string(lcfg, 2);
633 if (len >= sizeof(obd->obd_uuid)) {
634 CERROR("%s: uuid must be < %d bytes long\n",
635 name, (int)sizeof(obd->obd_uuid));
639 obd = class_newdev(typename, name, uuid);
640 if (IS_ERR(obd)) { /* Already exists or out of obds */
642 CERROR("Cannot create device %s of type %s : %d\n",
646 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
647 "obd %px obd_magic %08X != %08X\n",
648 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
649 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
650 "%px obd_name %s != %s\n", obd, obd->obd_name, name);
652 exp = class_new_export_self(obd, &obd->obd_uuid);
659 obd->obd_self_export = exp;
660 list_del_init(&exp->exp_obd_chain_timed);
661 class_export_put(exp);
663 rc = class_register_device(obd);
665 class_decref(obd, "newdev", obd);
669 obd->obd_attached = 1;
670 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
671 obd->obd_minor, typename, kref_read(&obd->obd_refcount));
675 EXPORT_SYMBOL(class_attach);
678 * Create hashes, self-export, and call type-specific setup.
679 * Setup is effectively the "start this obd" call.
681 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
687 LASSERT(obd != NULL);
688 LASSERTF(obd == class_num2obd(obd->obd_minor),
689 "obd %px != obd_devs[%d] %px\n",
690 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
691 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
692 "obd %px obd_magic %08x != %08x\n",
693 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
695 /* have we attached a type to this device? */
696 if (!obd->obd_attached) {
697 CERROR("Device %d not attached\n", obd->obd_minor);
701 if (obd->obd_set_up) {
702 CERROR("Device %d already setup (type %s)\n",
703 obd->obd_minor, obd->obd_type->typ_name);
707 /* is someone else setting us up right now? (attach inits spinlock) */
708 spin_lock(&obd->obd_dev_lock);
709 if (obd->obd_starting) {
710 spin_unlock(&obd->obd_dev_lock);
711 CERROR("Device %d setup in progress (type %s)\n",
712 obd->obd_minor, obd->obd_type->typ_name);
716 * just leave this on forever. I can't use obd_set_up here because
717 * other fns check that status, and we're not actually set up yet.
719 obd->obd_starting = 1;
720 obd->obd_nid_stats_hash = NULL;
721 obd->obd_gen_hash = NULL;
722 spin_unlock(&obd->obd_dev_lock);
724 /* create an uuid-export lustre hash */
725 err = rhashtable_init(&obd->obd_uuid_hash, &uuid_hash_params);
727 GOTO(err_starting, err);
729 #ifdef HAVE_SERVER_SUPPORT
730 /* create a nid-export lustre hash */
731 err = rhltable_init(&obd->obd_nid_hash, &nid_hash_params);
733 GOTO(err_uuid_hash, err = -ENOMEM);
735 /* create a nid-stats lustre hash */
736 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
737 HASH_NID_STATS_CUR_BITS,
738 HASH_NID_STATS_MAX_BITS,
739 HASH_NID_STATS_BKT_BITS, 0,
744 if (!obd->obd_nid_stats_hash)
745 GOTO(err_nid_hash, err = -ENOMEM);
747 /* create a client_generation-export lustre hash */
748 obd->obd_gen_hash = cfs_hash_create("UUID_HASH",
751 HASH_GEN_BKT_BITS, 0,
754 &gen_hash_ops, CFS_HASH_DEFAULT);
755 if (!obd->obd_gen_hash)
756 GOTO(err_nid_stats_hash, err = -ENOMEM);
757 #endif /* HAVE_SERVER_SUPPORT */
759 err = obd_setup(obd, lcfg);
761 #ifdef HAVE_SERVER_SUPPORT
762 GOTO(err_gen_hash, err);
764 GOTO(err_uuid_hash, err);
765 #endif /* ! HAVE_SERVER_SUPPORT */
769 spin_lock(&obd->obd_dev_lock);
770 /* cleanup drops this */
771 class_incref(obd, "setup", obd);
772 spin_unlock(&obd->obd_dev_lock);
774 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
775 obd->obd_name, obd->obd_uuid.uuid);
779 #ifdef HAVE_SERVER_SUPPORT
781 if (obd->obd_gen_hash) {
782 cfs_hash_putref(obd->obd_gen_hash);
783 obd->obd_gen_hash = NULL;
786 if (obd->obd_nid_stats_hash) {
787 cfs_hash_putref(obd->obd_nid_stats_hash);
788 obd->obd_nid_stats_hash = NULL;
791 rhltable_destroy(&obd->obd_nid_hash);
792 #endif /* HAVE_SERVER_SUPPORT */
794 rhashtable_destroy(&obd->obd_uuid_hash);
796 obd->obd_starting = 0;
797 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
800 EXPORT_SYMBOL(class_setup);
803 * We have finished using this OBD and are ready to destroy it.
804 * There can be no more references to this obd.
806 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
810 if (obd->obd_set_up) {
811 CERROR("OBD device %d still set up\n", obd->obd_minor);
815 spin_lock(&obd->obd_dev_lock);
816 if (!obd->obd_attached) {
817 spin_unlock(&obd->obd_dev_lock);
818 CERROR("OBD device %d not attached\n", obd->obd_minor);
821 obd->obd_attached = 0;
823 /* cleanup in progress. we don't like to find this device after now */
824 class_unregister_device(obd);
825 spin_unlock(&obd->obd_dev_lock);
827 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
828 obd->obd_name, obd->obd_uuid.uuid);
830 class_decref(obd, "newdev", obd);
834 EXPORT_SYMBOL(class_detach);
837 * Start shutting down the OBD. There may be in-progess ops when
838 * this is called. We tell them to start shutting down with a call
839 * to class_disconnect_exports().
841 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
847 CFS_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
849 if (!obd->obd_set_up) {
850 CERROR("Device %d not setup\n", obd->obd_minor);
854 spin_lock(&obd->obd_dev_lock);
855 if (obd->obd_stopping) {
856 spin_unlock(&obd->obd_dev_lock);
857 CERROR("OBD %d already stopping\n", obd->obd_minor);
860 /* Leave this on forever */
861 obd->obd_stopping = 1;
862 spin_unlock(&obd->obd_dev_lock);
864 /* wait for already-arrived-connections to finish. */
865 wait_var_event(&obd->obd_conn_inprogress,
866 atomic_read(&obd->obd_conn_inprogress) == 0);
869 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
870 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
876 LCONSOLE(D_WARNING, "Failing over %s\n",
878 spin_lock(&obd->obd_dev_lock);
880 #ifdef HAVE_SERVER_SUPPORT
881 obd->obd_no_transno = 1;
883 obd->obd_no_recov = 1;
884 spin_unlock(&obd->obd_dev_lock);
885 if (obd->obd_type->typ_dt_ops->o_iocontrol) {
886 obd_iocontrol(OBD_IOC_SYNC,
887 obd->obd_self_export,
892 CERROR("Unrecognised flag '%c'\n", *flag);
896 LASSERT(obd->obd_self_export);
898 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d/%d\n",
899 obd->obd_name, obd->obd_num_exports,
900 kref_read(&obd->obd_refcount) - 2);
901 dump_exports(obd, 0, D_HA);
902 class_disconnect_exports(obd);
904 /* Precleanup, we must make sure all exports get destroyed. */
905 err = obd_precleanup(obd);
907 CERROR("Precleanup %s returned %d\n",
910 /* destroy an uuid-export hash body */
911 rhashtable_free_and_destroy(&obd->obd_uuid_hash, obd_export_exit,
913 #ifdef HAVE_SERVER_SUPPORT
914 /* destroy a nid-export hash body */
915 rhltable_free_and_destroy(&obd->obd_nid_hash, nid_export_exit, NULL);
917 /* destroy a nid-stats hash body */
918 if (obd->obd_nid_stats_hash) {
919 cfs_hash_putref(obd->obd_nid_stats_hash);
920 obd->obd_nid_stats_hash = NULL;
923 /* destroy a client_generation-export hash body */
924 if (obd->obd_gen_hash) {
925 cfs_hash_putref(obd->obd_gen_hash);
926 obd->obd_gen_hash = NULL;
928 #endif /* HAVE_SERVER_SUPPORT */
929 class_decref(obd, "setup", obd);
935 struct obd_device *class_incref(struct obd_device *obd,
939 lu_ref_add_atomic(&obd->obd_reference, scope, source);
940 kref_get(&obd->obd_refcount);
941 CDEBUG(D_INFO, "incref %s (%p) now %d - %s\n", obd->obd_name, obd,
942 kref_read(&obd->obd_refcount), scope);
946 EXPORT_SYMBOL(class_incref);
948 static void class_decref_free(struct kref *kref)
950 struct obd_device *obd;
951 struct obd_export *exp;
953 obd = container_of(kref, struct obd_device, obd_refcount);
954 LASSERT(!obd->obd_attached);
956 * All exports have been destroyed; there should
957 * be no more in-progress ops by this point.
959 exp = obd->obd_self_export;
962 exp->exp_flags |= exp_flags_from_obd(obd);
963 class_unlink_export(exp);
967 void class_decref(struct obd_device *obd, const char *scope, const void *source)
969 CDEBUG(D_INFO, "Decref %s (%p) now %d - %s\n", obd->obd_name, obd,
970 kref_read(&obd->obd_refcount), scope);
971 LASSERT(obd->obd_num_exports >= 0);
972 kref_put(&obd->obd_refcount, class_decref_free);
973 lu_ref_del(&obd->obd_reference, scope, source);
975 EXPORT_SYMBOL(class_decref);
978 * Add a failover NID location.
979 * Client OBD types contact server OBD types using this NID list.
981 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
983 struct obd_import *imp;
984 struct obd_uuid uuid;
989 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
990 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
991 CERROR("invalid conn_uuid\n");
994 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
995 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
996 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
997 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
998 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
999 CERROR("can't add connection on non-client dev\n");
1003 imp = obd->u.cli.cl_import;
1005 CERROR("try to add conn on immature client dev\n");
1009 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
1010 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
1014 EXPORT_SYMBOL(class_add_conn);
1016 /** Remove a failover NID location. */
1017 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
1019 struct obd_import *imp;
1020 struct obd_uuid uuid;
1025 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1026 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
1027 CERROR("invalid conn_uuid\n");
1030 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
1031 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
1032 CERROR("can't del connection on non-client dev\n");
1036 imp = obd->u.cli.cl_import;
1038 CERROR("try to del conn on immature client dev\n");
1042 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
1043 rc = obd_del_conn(imp, &uuid);
1048 static LIST_HEAD(lustre_profile_list);
1049 static DEFINE_SPINLOCK(lustre_profile_list_lock);
1051 static struct lustre_profile *class_get_profile_nolock(const char *prof)
1053 struct lustre_profile *lprof;
1056 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
1057 if (strcmp(lprof->lp_profile, prof) == 0) {
1065 struct lustre_profile *class_get_profile(const char *prof)
1067 struct lustre_profile *lprof;
1070 spin_lock(&lustre_profile_list_lock);
1071 lprof = class_get_profile_nolock(prof);
1072 spin_unlock(&lustre_profile_list_lock);
1075 EXPORT_SYMBOL(class_get_profile);
1078 * Create a named "profile".
1079 * This defines the MDC and OSC names to use for a client.
1080 * This also is used to define the LOV to be used by a MDT.
1082 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
1083 int mdclen, char *mdc)
1085 struct lustre_profile *lprof;
1090 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
1092 OBD_ALLOC(lprof, sizeof(*lprof));
1095 INIT_LIST_HEAD(&lprof->lp_list);
1097 LASSERT(proflen == (strlen(prof) + 1));
1098 OBD_ALLOC(lprof->lp_profile, proflen);
1099 if (!lprof->lp_profile)
1100 GOTO(out, err = -ENOMEM);
1101 memcpy(lprof->lp_profile, prof, proflen);
1103 LASSERT(osclen == (strlen(osc) + 1));
1104 OBD_ALLOC(lprof->lp_dt, osclen);
1106 GOTO(out, err = -ENOMEM);
1107 memcpy(lprof->lp_dt, osc, osclen);
1110 LASSERT(mdclen == (strlen(mdc) + 1));
1111 OBD_ALLOC(lprof->lp_md, mdclen);
1113 GOTO(out, err = -ENOMEM);
1114 memcpy(lprof->lp_md, mdc, mdclen);
1117 spin_lock(&lustre_profile_list_lock);
1119 lprof->lp_list_deleted = false;
1121 list_add(&lprof->lp_list, &lustre_profile_list);
1122 spin_unlock(&lustre_profile_list_lock);
1127 OBD_FREE(lprof->lp_md, mdclen);
1129 OBD_FREE(lprof->lp_dt, osclen);
1130 if (lprof->lp_profile)
1131 OBD_FREE(lprof->lp_profile, proflen);
1132 OBD_FREE(lprof, sizeof(*lprof));
1136 void class_del_profile(const char *prof)
1138 struct lustre_profile *lprof;
1142 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
1144 spin_lock(&lustre_profile_list_lock);
1145 lprof = class_get_profile_nolock(prof);
1147 /* because get profile increments the ref counter */
1149 list_del(&lprof->lp_list);
1150 lprof->lp_list_deleted = true;
1151 spin_unlock(&lustre_profile_list_lock);
1153 class_put_profile(lprof);
1155 spin_unlock(&lustre_profile_list_lock);
1159 EXPORT_SYMBOL(class_del_profile);
1161 void class_put_profile(struct lustre_profile *lprof)
1163 spin_lock(&lustre_profile_list_lock);
1164 if ((--lprof->lp_refs) > 0) {
1165 LASSERT(lprof->lp_refs > 0);
1166 spin_unlock(&lustre_profile_list_lock);
1169 spin_unlock(&lustre_profile_list_lock);
1171 /* confirm not a negative number */
1172 LASSERT(lprof->lp_refs == 0);
1175 * At least one class_del_profile/profiles must be called
1176 * on the target profile or lustre_profile_list will corrupt
1178 LASSERT(lprof->lp_list_deleted);
1179 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
1180 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
1182 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
1183 OBD_FREE(lprof, sizeof(*lprof));
1185 EXPORT_SYMBOL(class_put_profile);
1188 void class_del_profiles(void)
1190 struct lustre_profile *lprof, *n;
1193 spin_lock(&lustre_profile_list_lock);
1194 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
1195 list_del(&lprof->lp_list);
1196 lprof->lp_list_deleted = true;
1197 spin_unlock(&lustre_profile_list_lock);
1199 class_put_profile(lprof);
1201 spin_lock(&lustre_profile_list_lock);
1203 spin_unlock(&lustre_profile_list_lock);
1206 EXPORT_SYMBOL(class_del_profiles);
1209 * We can't call lquota_process_config directly because
1210 * it lives in a module that must be loaded after this one.
1212 #ifdef HAVE_SERVER_SUPPORT
1213 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
1214 #endif /* HAVE_SERVER_SUPPORT */
1217 * Rename the proc parameter in \a cfg with a new name \a new_name.
1219 * \param cfg config structure which contains the proc parameter
1220 * \param new_name new name of the proc parameter
1222 * \retval valid-pointer pointer to the newly-allocated config structure
1223 * which contains the renamed proc parameter
1224 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
1225 * not contain a proc parameter
1226 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
1228 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
1229 const char *new_name)
1231 struct lustre_cfg_bufs *bufs = NULL;
1232 struct lustre_cfg *new_cfg = NULL;
1234 char *new_param = NULL;
1241 if (!cfg || !new_name)
1242 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1244 param = lustre_cfg_string(cfg, 1);
1246 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1248 value = strchr(param, '=');
1250 name_len = value - param;
1252 name_len = strlen(param);
1254 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1256 OBD_ALLOC(new_param, new_len);
1258 GOTO(out_nocfg, new_cfg = ERR_PTR(-ENOMEM));
1260 strscpy(new_param, new_name, new_len);
1262 strcat(new_param, value);
1264 OBD_ALLOC_PTR(bufs);
1266 GOTO(out_free_param, new_cfg = ERR_PTR(-ENOMEM));
1268 lustre_cfg_bufs_reset(bufs, NULL);
1269 lustre_cfg_bufs_init(bufs, cfg);
1270 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1272 OBD_ALLOC(new_cfg, lustre_cfg_len(bufs->lcfg_bufcount,
1273 bufs->lcfg_buflen));
1275 GOTO(out_free_buf, new_cfg = ERR_PTR(-ENOMEM));
1277 lustre_cfg_init(new_cfg, cfg->lcfg_command, bufs);
1279 new_cfg->lcfg_num = cfg->lcfg_num;
1280 new_cfg->lcfg_flags = cfg->lcfg_flags;
1281 new_cfg->lcfg_nid = cfg->lcfg_nid;
1282 new_cfg->lcfg_nal = cfg->lcfg_nal;
1286 OBD_FREE(new_param, new_len);
1290 EXPORT_SYMBOL(lustre_cfg_rename);
1292 static ssize_t process_param2_config(struct lustre_cfg *lcfg)
1294 char *param = lustre_cfg_string(lcfg, 1);
1295 char *upcall = lustre_cfg_string(lcfg, 2);
1296 struct kobject *kobj = NULL;
1297 const char *subsys = param;
1298 char *newparam = NULL;
1300 [0] = "/usr/sbin/lctl",
1311 print_lustre_cfg(lcfg);
1313 len = strcspn(param, ".=");
1317 /* If we find '=' then its the top level sysfs directory */
1318 if (param[len] == '=')
1319 RETURN(class_set_global(param));
1321 subsys = kstrndup(param, len, GFP_KERNEL);
1325 kobj = kset_find_obj(lustre_kset, subsys);
1328 char *value = param;
1332 param = strsep(&value, "=");
1333 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s", param);
1334 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1335 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1336 ktime_get_real_seconds());
1339 rc = kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
1340 for (i = 0; i < ARRAY_SIZE(envp); i++)
1348 /* Add upcall processing here. Now only lctl is supported */
1349 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1350 CERROR("Unsupported upcall %s\n", upcall);
1354 /* root_squash and nosquash_nids settings must be applied to
1355 * global subsystem (*.) so that it is taken into account by
1356 * both client and server sides. So do the equivalent of a
1357 * 's / mdt. / *. /'.
1359 if ((strstr(param, PARAM_NOSQUASHNIDS) ||
1360 strstr(param, PARAM_ROOTSQUASH)) &&
1361 (param[0] != '*' || param[1] != '.')) {
1362 newparam = kmalloc(strlen(param) + 1, GFP_NOFS);
1366 snprintf(newparam, strlen(param) + 1, "*%s", param + len);
1367 argv[2] = (char *)newparam;
1370 start = ktime_get();
1371 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1375 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1376 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1377 (long)ktime_us_delta(end, start));
1379 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1380 argv[0], argv[1], argv[2],
1381 (long)ktime_us_delta(end, start));
1389 #ifdef HAVE_SERVER_SUPPORT
1390 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1392 quota_process_config = qpc;
1394 EXPORT_SYMBOL(lustre_register_quota_process_config);
1395 #endif /* HAVE_SERVER_SUPPORT */
1398 * Process configuration commands given in lustre_cfg form.
1399 * These may come from direct calls (e.g. class_manual_cleanup)
1400 * or processing the config llog, or ioctl from lctl.
1402 int class_process_config(struct lustre_cfg *lcfg)
1404 struct obd_device *obd;
1405 struct lnet_nid nid;
1408 LASSERT(lcfg && !IS_ERR(lcfg));
1409 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1411 /* Commands that don't need a device */
1412 switch (lcfg->lcfg_command) {
1414 err = class_attach(lcfg);
1417 case LCFG_ADD_UUID: {
1419 "adding mapping from uuid %s to nid %#llx (%s)\n",
1420 lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid,
1421 libcfs_nid2str(lcfg->lcfg_nid));
1424 if (lcfg->lcfg_nid) {
1425 lnet_nid4_to_nid(lcfg->lcfg_nid, &nid);
1427 char *nidstr = lustre_cfg_string(lcfg, 2);
1430 err = libcfs_strnid(&nid, nidstr);
1435 err = class_add_uuid(lustre_cfg_string(lcfg, 1), &nid);
1438 case LCFG_DEL_UUID: {
1439 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1440 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) ==
1441 0) ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1443 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1446 case LCFG_MOUNTOPT: {
1447 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1448 lustre_cfg_string(lcfg, 1),
1449 lustre_cfg_string(lcfg, 2),
1450 lustre_cfg_string(lcfg, 3));
1452 * set these mount options somewhere, so ll_fill_super
1455 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1456 lustre_cfg_string(lcfg, 1),
1457 LUSTRE_CFG_BUFLEN(lcfg, 2),
1458 lustre_cfg_string(lcfg, 2),
1459 LUSTRE_CFG_BUFLEN(lcfg, 3),
1460 lustre_cfg_string(lcfg, 3));
1463 case LCFG_DEL_MOUNTOPT: {
1464 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1465 lustre_cfg_string(lcfg, 1));
1466 class_del_profile(lustre_cfg_string(lcfg, 1));
1469 case LCFG_SET_TIMEOUT: {
1470 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1471 obd_timeout, lcfg->lcfg_num);
1472 obd_timeout = max(lcfg->lcfg_num, 1U);
1473 ping_interval = max(obd_timeout / 4, 1U);
1474 obd_timeout_set = 1;
1477 case LCFG_SET_LDLM_TIMEOUT: {
1478 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1479 ldlm_timeout, lcfg->lcfg_num);
1480 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1481 if (ldlm_timeout >= obd_timeout)
1482 ldlm_timeout = max(obd_timeout / 3, 1U);
1483 ldlm_timeout_set = 1;
1486 case LCFG_SET_UPCALL: {
1487 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1488 /* COMPAT_146 Don't fail on old configs */
1492 struct cfg_marker *marker;
1494 marker = lustre_cfg_buf(lcfg, 1);
1495 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1496 marker->cm_flags, marker->cm_tgtname,
1497 marker->cm_comment);
1503 /* llite has no OBD */
1504 if (class_match_param(lustre_cfg_string(lcfg, 1),
1505 PARAM_LLITE, NULL) == 0) {
1506 struct lustre_sb_info *lsi;
1511 * The instance name contains the sb:
1512 * lustre-client-aacfe000
1514 tmp = strrchr(lustre_cfg_string(lcfg, 0), '-');
1515 if (!tmp || !*(++tmp))
1516 GOTO(out, err = -EINVAL);
1518 if (sscanf(tmp, "%lx", &addr) != 1)
1519 GOTO(out, err = -EINVAL);
1521 lsi = s2lsi((struct super_block *)addr);
1522 /* This better be a real Lustre superblock! */
1523 LASSERT(lsi->lsi_lmd->lmd_magic == LMD_MAGIC);
1525 count = class_modify_config(lcfg, PARAM_LLITE,
1527 err = count < 0 ? count : 0;
1529 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1530 PARAM_SYS, &tmp) == 0)) {
1531 /* Global param settings */
1532 err = class_set_global(tmp);
1534 * Client or server should not fail to mount if
1535 * it hits an unknown configuration parameter.
1538 CWARN("Ignoring unknown param %s\n", tmp);
1541 #ifdef HAVE_SERVER_SUPPORT
1542 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1543 PARAM_QUOTA, &tmp) == 0) &&
1544 quota_process_config) {
1545 err = (*quota_process_config)(lcfg);
1547 #endif /* HAVE_SERVER_SUPPORT */
1552 case LCFG_SET_PARAM: {
1553 err = process_param2_config(lcfg);
1557 /* Commands that require a device */
1558 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1560 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1561 CERROR("this lcfg command requires a device name\n");
1563 CERROR("no device for: %s\n",
1564 lustre_cfg_string(lcfg, 0));
1566 GOTO(out, err = -EINVAL);
1568 switch(lcfg->lcfg_command) {
1570 err = class_setup(obd, lcfg);
1574 err = class_detach(obd, lcfg);
1577 case LCFG_CLEANUP: {
1578 err = class_cleanup(obd, lcfg);
1581 case LCFG_ADD_CONN: {
1582 err = class_add_conn(obd, lcfg);
1585 case LCFG_DEL_CONN: {
1586 err = class_del_conn(obd, lcfg);
1589 case LCFG_POOL_NEW: {
1590 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1593 case LCFG_POOL_ADD: {
1594 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1595 lustre_cfg_string(lcfg, 3));
1598 case LCFG_POOL_REM: {
1599 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1600 lustre_cfg_string(lcfg, 3));
1603 case LCFG_POOL_DEL: {
1604 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1608 * Process config log ADD_MDC record twice to add MDC also to LOV
1611 * add 0:lustre-clilmv 1:lustre-MDT0000_UUID 2:0 3:1
1612 * 4:lustre-MDT0000-mdc_UUID
1614 case LCFG_ADD_MDC: {
1615 struct obd_device *lov_obd;
1618 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1622 /* make sure this is client LMV log entry */
1623 clilmv = strstr(lustre_cfg_string(lcfg, 0), "clilmv");
1628 * replace 'lmv' with 'lov' name to address LOV device and
1629 * process llog record to add MDC there.
1632 lov_obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1634 err = obd_process_config(lov_obd, sizeof(*lcfg), lcfg);
1637 CERROR("%s: Cannot find LOV by %s name, rc = %d\n",
1638 obd->obd_name, lustre_cfg_string(lcfg, 0), err);
1640 /* restore 'lmv' name */
1645 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1651 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1652 CWARN("Ignoring error %d on optional command %#x\n", err,
1653 lcfg->lcfg_command);
1658 EXPORT_SYMBOL(class_process_config);
1660 ssize_t class_modify_config(struct lustre_cfg *lcfg, const char *prefix,
1661 struct kobject *kobj)
1663 const struct kobj_type *typ;
1667 if (lcfg->lcfg_command != LCFG_PARAM) {
1668 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1672 typ = get_ktype(kobj);
1673 if (!typ || !typ->default_groups)
1676 print_lustre_cfg(lcfg);
1679 * e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1680 * or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1681 * or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36
1683 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1684 struct attribute *attr = NULL;
1689 key = lustre_cfg_buf(lcfg, i);
1690 /* Strip off prefix */
1691 if (class_match_param(key, prefix, &key))
1693 * If the prefix doesn't match, return error so we
1694 * can pass it down the stack
1698 value = strchr(key, '=');
1699 if (!value || *(value + 1) == 0) {
1700 CERROR("%s: can't parse param '%s' (missing '=')\n",
1701 lustre_cfg_string(lcfg, 0),
1702 lustre_cfg_string(lcfg, i));
1703 /* continue parsing other params */
1706 keylen = value - key;
1709 attr = get_attr_starts_with(typ, key, keylen);
1711 char *envp[4], *param, *path;
1713 path = kobject_get_path(kobj, GFP_KERNEL);
1717 /* convert sysfs path to uevent format */
1719 while ((param = strchr(param, '/')) != NULL)
1722 param = strstr(path, "fs.lustre.") + 10;
1724 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s.%.*s",
1725 param, (int) keylen, key);
1726 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1727 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1728 ktime_get_real_seconds());
1731 if (kobject_uevent_env(kobj, KOBJ_CHANGE, envp)) {
1732 CERROR("%s: failed to send uevent %s\n",
1733 kobject_name(kobj), key);
1736 for (i = 0; i < ARRAY_SIZE(envp); i++)
1740 count += lustre_attr_store(kobj, attr, value,
1746 EXPORT_SYMBOL(class_modify_config);
1749 * Supplemental functions for config logs, it allocates lustre_cfg
1750 * buffers plus initialized llog record header at the beginning.
1752 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1754 struct llog_cfg_rec *lcr;
1759 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1760 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1761 sizeof(struct llog_rec_tail);
1763 OBD_ALLOC(lcr, reclen);
1767 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1769 lcr->lcr_hdr.lrh_len = reclen;
1770 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1774 EXPORT_SYMBOL(lustre_cfg_rec_new);
1776 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1779 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1782 EXPORT_SYMBOL(lustre_cfg_rec_free);
1785 * Parse a configuration llog, doing various manipulations on them
1786 * for various reasons, (modifications for compatibility, skip obsolete
1787 * records, change uuids, etc), then class_process_config() resulting
1790 int class_config_llog_handler(const struct lu_env *env,
1791 struct llog_handle *handle,
1792 struct llog_rec_hdr *rec, void *data)
1794 struct config_llog_instance *cfg = data;
1795 int cfg_len = rec->lrh_len;
1796 char *cfg_buf = (char *) (rec + 1);
1800 /* class_config_dump_handler(handle, rec, data); */
1802 switch (rec->lrh_type) {
1804 struct lustre_cfg *lcfg, *lcfg_new;
1805 struct lustre_cfg_bufs bufs;
1806 char *inst_name = NULL;
1810 lcfg = (struct lustre_cfg *)cfg_buf;
1811 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1812 lustre_swab_lustre_cfg(lcfg);
1816 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1820 /* Figure out config state info */
1821 if (lcfg->lcfg_command == LCFG_MARKER) {
1822 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1823 lustre_swab_cfg_marker(marker, swab,
1824 LUSTRE_CFG_BUFLEN(lcfg, 1));
1825 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1826 cfg->cfg_flags, marker->cm_flags);
1827 if (marker->cm_flags & CM_START) {
1828 /* all previous flags off */
1829 cfg->cfg_flags = CFG_F_MARKER;
1830 server_name2index(marker->cm_tgtname,
1831 &cfg->cfg_lwp_idx, NULL);
1832 if (marker->cm_flags & CM_SKIP) {
1833 cfg->cfg_flags |= CFG_F_SKIP;
1834 CDEBUG(D_CONFIG, "SKIP #%d\n",
1836 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1838 lustre_check_exclusion(cfg->cfg_sb,
1839 marker->cm_tgtname))) {
1840 cfg->cfg_flags |= CFG_F_EXCLUDE;
1841 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1844 } else if (marker->cm_flags & CM_END) {
1849 * A config command without a start marker before it is
1852 if (!(cfg->cfg_flags & CFG_F_MARKER) &&
1853 (lcfg->lcfg_command != LCFG_MARKER)) {
1854 CWARN("Skip config outside markers, (inst: %016lx, uuid: %s, flags: %#x)\n",
1856 cfg->cfg_uuid.uuid, cfg->cfg_flags);
1857 cfg->cfg_flags |= CFG_F_SKIP;
1859 if (cfg->cfg_flags & CFG_F_SKIP) {
1860 CDEBUG(D_CONFIG, "skipping %#x\n",
1863 /* No processing! */
1868 * For interoperability between 1.8 and 2.0,
1869 * rename "mds" OBD device type to "mdt".
1872 char *typename = lustre_cfg_string(lcfg, 1);
1873 char *index = lustre_cfg_string(lcfg, 2);
1875 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1876 strcmp(typename, "mds") == 0)) {
1877 CWARN("For 1.8 interoperability, rename obd "
1878 "type from mds to mdt\n");
1881 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1882 strcmp(index, "type") == 0)) {
1883 CDEBUG(D_INFO, "For 1.8 interoperability, "
1884 "set this index to '0'\n");
1890 #ifdef HAVE_SERVER_SUPPORT
1891 /* newer MDS replaces LOV/OSC with LOD/OSP */
1892 if ((lcfg->lcfg_command == LCFG_ATTACH ||
1893 lcfg->lcfg_command == LCFG_SET_PARAM ||
1894 lcfg->lcfg_command == LCFG_PARAM) &&
1895 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1896 char *typename = lustre_cfg_string(lcfg, 1);
1899 strcmp(typename, LUSTRE_LOV_NAME) == 0) {
1901 "For 2.x interoperability, rename obd "
1902 "type from lov to lod (%s)\n",
1903 s2lsi(cfg->cfg_sb)->lsi_svname);
1904 strcpy(typename, LUSTRE_LOD_NAME);
1907 strcmp(typename, LUSTRE_OSC_NAME) == 0) {
1909 "For 2.x interoperability, rename obd "
1910 "type from osc to osp (%s)\n",
1911 s2lsi(cfg->cfg_sb)->lsi_svname);
1912 strcpy(typename, LUSTRE_OSP_NAME);
1915 #endif /* HAVE_SERVER_SUPPORT */
1917 if (cfg->cfg_flags & CFG_F_EXCLUDE) {
1918 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1919 lcfg->lcfg_command);
1920 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1921 /* Add inactive instead */
1922 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1925 lustre_cfg_bufs_reset(&bufs, NULL);
1926 lustre_cfg_bufs_init(&bufs, lcfg);
1928 if (cfg->cfg_instance &&
1929 lcfg->lcfg_command != LCFG_SPTLRPC_CONF &&
1930 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1931 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1932 LUSTRE_MAXINSTANCE + 4;
1933 OBD_ALLOC(inst_name, inst_len);
1935 GOTO(out, rc = -ENOMEM);
1936 snprintf(inst_name, inst_len, "%s-%016lx",
1937 lustre_cfg_string(lcfg, 0),
1939 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1940 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1941 lcfg->lcfg_command, inst_name);
1944 /* override llog UUID for clients, to insure they are unique */
1945 if (cfg->cfg_instance && lcfg->lcfg_command == LCFG_ATTACH)
1946 lustre_cfg_bufs_set_string(&bufs, 2,
1947 cfg->cfg_uuid.uuid);
1949 * sptlrpc config record, we expect 2 data segments:
1950 * [0]: fs_name/target_name,
1952 * moving them to index [1] and [2], and insert MGC's
1953 * obdname at index [0].
1955 if (cfg->cfg_instance &&
1956 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1957 /* After ASLR changes cfg_instance this needs fixing */
1958 /* "obd" is set in config_log_find_or_add() */
1959 struct obd_device *obd = (void *)cfg->cfg_instance;
1961 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1962 bufs.lcfg_buflen[1]);
1963 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1964 bufs.lcfg_buflen[0]);
1965 lustre_cfg_bufs_set_string(&bufs, 0,
1970 * Add net info to setup command
1971 * if given on command line.
1972 * So config log will be:
1976 * [3]: inactive-on-startup
1977 * [4]: restrictive net
1979 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1980 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1981 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1982 char *nidnet = lsi->lsi_lmd->lmd_nidnet;
1984 if (lcfg->lcfg_command == LCFG_SETUP &&
1985 lcfg->lcfg_bufcount != 2 && nidnet) {
1986 CDEBUG(D_CONFIG, "Adding net %s info to setup "
1987 "command for client %s\n", nidnet,
1988 lustre_cfg_string(lcfg, 0));
1989 lustre_cfg_bufs_set_string(&bufs, 4, nidnet);
1993 OBD_ALLOC(lcfg_new, lustre_cfg_len(bufs.lcfg_bufcount,
1996 GOTO(out_inst, rc = -ENOMEM);
1998 lustre_cfg_init(lcfg_new, lcfg->lcfg_command, &bufs);
1999 lcfg_new->lcfg_num = lcfg->lcfg_num;
2000 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
2003 * XXX Hack to try to remain binary compatible with
2004 * pre-newconfig logs
2006 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
2007 (lcfg->lcfg_nid >> 32) == 0) {
2008 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
2010 lcfg_new->lcfg_nid =
2011 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
2012 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
2013 lcfg->lcfg_nal, addr,
2014 libcfs_nid2str(lcfg_new->lcfg_nid));
2016 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
2019 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
2021 rc = class_process_config(lcfg_new);
2022 OBD_FREE(lcfg_new, lustre_cfg_len(lcfg_new->lcfg_bufcount,
2023 lcfg_new->lcfg_buflens));
2026 OBD_FREE(inst_name, inst_len);
2030 CERROR("Unknown llog record type %#x encountered\n",
2036 CERROR("%s: cfg command failed: rc = %d\n",
2037 handle->lgh_ctxt->loc_obd->obd_name, rc);
2038 class_config_dump_handler(NULL, handle, rec, data);
2042 EXPORT_SYMBOL(class_config_llog_handler);
2044 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
2045 char *name, struct config_llog_instance *cfg)
2047 struct llog_process_cat_data cd = {
2048 .lpcd_first_idx = 0,
2049 .lpcd_read_mode = LLOG_READ_MODE_NORMAL,
2051 struct llog_handle *llh;
2056 CDEBUG(D_INFO, "looking up llog %s\n", name);
2057 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
2061 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
2063 GOTO(parse_out, rc);
2065 /* continue processing from where we last stopped to end-of-log */
2067 cd.lpcd_first_idx = cfg->cfg_last_idx;
2068 callback = cfg->cfg_callback;
2069 LASSERT(callback != NULL);
2071 callback = class_config_llog_handler;
2074 cd.lpcd_last_idx = 0;
2076 rc = llog_process(env, llh, callback, cfg, &cd);
2078 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
2079 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
2081 cfg->cfg_last_idx = cd.lpcd_last_idx;
2084 llog_close(env, llh);
2087 EXPORT_SYMBOL(class_config_parse_llog);
2090 * Get marker cfg_flag
2092 void llog_get_marker_cfg_flags(struct llog_rec_hdr *rec,
2093 unsigned int *cfg_flags)
2095 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2096 struct cfg_marker *marker;
2098 if (lcfg->lcfg_command == LCFG_MARKER) {
2099 marker = lustre_cfg_buf(lcfg, 1);
2100 if (marker->cm_flags & CM_START) {
2101 *cfg_flags = CFG_F_MARKER;
2102 if (marker->cm_flags & CM_SKIP)
2103 *cfg_flags = CFG_F_SKIP;
2104 } else if (marker->cm_flags & CM_END) {
2107 CDEBUG(D_INFO, "index=%d, cm_flags=%#08x cfg_flags=%#08x\n",
2108 rec->lrh_index, marker->cm_flags, *cfg_flags);
2113 * Parse config record and output dump in supplied buffer.
2115 * This is separated from class_config_dump_handler() to use
2116 * for ioctl needs as well
2119 * - { index: 4, event: attach, device: lustrewt-clilov, type: lov,
2120 * UUID: lustrewt-clilov_UUID }
2122 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size,
2123 unsigned int *cfg_flags, bool raw)
2125 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2127 char *end = buf + size;
2129 struct lcfg_type_data *ldata;
2132 LASSERT(rec->lrh_type == OBD_CFG_REC);
2134 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
2135 lustre_swab_lustre_cfg(lcfg);
2139 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2143 ldata = lcfg_cmd2data(lcfg->lcfg_command);
2147 llog_get_marker_cfg_flags(rec, cfg_flags);
2148 if ((lcfg->lcfg_command == LCFG_MARKER) && likely(!raw))
2150 /* entries outside marker are skipped */
2151 if (!(*cfg_flags & CFG_F_MARKER) && !raw)
2153 /* inside skipped marker */
2154 if ((*cfg_flags & CFG_F_SKIP) && !raw)
2157 /* form YAML entity */
2158 ptr += snprintf(ptr, end - ptr, "- { index: %u, event: %s",
2159 rec->lrh_index, ldata->ltd_name);
2163 if (lcfg->lcfg_flags) {
2164 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
2169 if (lcfg->lcfg_num) {
2170 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
2175 if (lcfg->lcfg_nid) {
2176 char nidstr[LNET_NIDSTR_SIZE];
2178 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2179 ptr += snprintf(ptr, end - ptr, ", nid: %s(%#llx)",
2180 nidstr, lcfg->lcfg_nid);
2185 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
2186 ptr += snprintf(ptr, end - ptr, ", device: %s",
2187 lustre_cfg_string(lcfg, 0));
2192 if (lcfg->lcfg_command == LCFG_SET_PARAM) {
2194 * set_param -P parameters have param=val here, separate
2195 * them through pointer magic and print them out in
2198 char *cfg_str = lustre_cfg_string(lcfg, 1);
2199 char *tmp = strchr(cfg_str, '=');
2205 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[0]);
2206 len = tmp - cfg_str + 1;
2207 snprintf(ptr, len, "%s", cfg_str);
2210 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[1]);
2211 ptr += snprintf(ptr, end - ptr, "%s", tmp + 1);
2216 if (lcfg->lcfg_command == LCFG_MARKER) {
2217 struct cfg_marker *marker;
2219 marker = lustre_cfg_buf(lcfg, 1);
2220 ptr += snprintf(ptr, end - ptr, ", flags: %#04x",
2222 ptr += snprintf(ptr, end - ptr, ", version: %d.%d.%d.%d",
2223 OBD_OCD_VERSION_MAJOR(marker->cm_vers),
2224 OBD_OCD_VERSION_MINOR(marker->cm_vers),
2225 OBD_OCD_VERSION_PATCH(marker->cm_vers),
2226 OBD_OCD_VERSION_FIX(marker->cm_vers));
2227 ptr += snprintf(ptr, end - ptr, ", createtime: %lld",
2228 marker->cm_createtime);
2229 ptr += snprintf(ptr, end - ptr, ", canceltime: %lld",
2230 marker->cm_canceltime);
2235 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
2236 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0) {
2237 ptr += snprintf(ptr, end - ptr, ", %s: %s",
2238 ldata->ltd_bufs[i - 1],
2239 lustre_cfg_string(lcfg, i));
2246 ptr += snprintf(ptr, end - ptr, " }\n");
2248 /* Return consumed bytes. If the buffer overflowed, zero last byte */
2259 * parse config record and output dump in supplied buffer.
2260 * This is separated from class_config_dump_handler() to use
2261 * for ioctl needs as well
2263 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
2265 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2267 char *end = buf + size;
2272 LASSERT(rec->lrh_type == OBD_CFG_REC);
2273 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2277 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
2278 if (lcfg->lcfg_flags)
2279 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
2283 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
2285 if (lcfg->lcfg_nid) {
2286 char nidstr[LNET_NIDSTR_SIZE];
2288 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2289 ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx) ",
2290 nidstr, lcfg->lcfg_nid);
2293 if (lcfg->lcfg_command == LCFG_MARKER) {
2294 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
2296 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
2297 marker->cm_step, marker->cm_flags,
2298 marker->cm_tgtname, marker->cm_comment);
2302 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
2303 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
2304 lustre_cfg_string(lcfg, i));
2307 ptr += snprintf(ptr, end - ptr, "\n");
2308 /* return consumed bytes */
2313 int class_config_dump_handler(const struct lu_env *env,
2314 struct llog_handle *handle,
2315 struct llog_rec_hdr *rec, void *data)
2322 OBD_ALLOC(outstr, 256);
2326 if (rec->lrh_type == OBD_CFG_REC) {
2327 class_config_parse_rec(rec, outstr, 256);
2328 LCONSOLE(D_WARNING, " %s\n", outstr);
2330 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
2334 OBD_FREE(outstr, 256);
2339 * Call class_cleanup and class_detach.
2340 * "Manual" only in the sense that we're faking lcfg commands.
2342 int class_manual_cleanup(struct obd_device *obd)
2345 struct lustre_cfg *lcfg;
2346 struct lustre_cfg_bufs bufs;
2352 CERROR("empty cleanup\n");
2357 strlcat(flags, "F", sizeof(flags));
2359 strlcat(flags, "A", sizeof(flags));
2361 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
2362 obd->obd_name, flags);
2364 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
2365 lustre_cfg_bufs_set_string(&bufs, 1, flags);
2366 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
2369 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
2371 rc = class_process_config(lcfg);
2373 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
2377 /* the lcfg is almost the same for both ops */
2378 lcfg->lcfg_command = LCFG_DETACH;
2379 rc = class_process_config(lcfg);
2381 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
2383 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
2386 EXPORT_SYMBOL(class_manual_cleanup);
2388 #ifdef HAVE_SERVER_SUPPORT
2390 * nid<->nidstats hash operations
2393 nidstats_hash(struct cfs_hash *hs, const void *key, const unsigned int bits)
2395 return cfs_hash_djb2_hash(key, sizeof(struct lnet_nid), bits);
2399 nidstats_key(struct hlist_node *hnode)
2401 struct nid_stat *ns;
2403 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2409 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2411 return nid_same((struct lnet_nid *)nidstats_key(hnode),
2412 (struct lnet_nid *)key);
2416 nidstats_object(struct hlist_node *hnode)
2418 return hlist_entry(hnode, struct nid_stat, nid_hash);
2422 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2424 struct nid_stat *ns;
2426 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2431 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2433 struct nid_stat *ns;
2435 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2439 static struct cfs_hash_ops nid_stat_hash_ops = {
2440 .hs_hash = nidstats_hash,
2441 .hs_key = nidstats_key,
2442 .hs_keycmp = nidstats_keycmp,
2443 .hs_object = nidstats_object,
2444 .hs_get = nidstats_get,
2445 .hs_put_locked = nidstats_put_locked,
2449 * client_generation<->export hash operations
2453 gen_hash(struct cfs_hash *hs, const void *key, const unsigned int bits)
2455 /* XXX did hash needs ? */
2456 return cfs_hash_djb2_hash(key, sizeof(__u32), bits);
2460 gen_key(struct hlist_node *hnode)
2462 struct obd_export *exp;
2464 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2466 RETURN(&exp->exp_target_data.ted_lcd->lcd_generation);
2470 * NOTE: It is impossible to find an export that is in failed
2471 * state with this function
2474 gen_kepcmp(const void *key, struct hlist_node *hnode)
2476 struct obd_export *exp;
2479 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2481 RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key &&
2486 gen_export_object(struct hlist_node *hnode)
2488 return hlist_entry(hnode, struct obd_export, exp_gen_hash);
2492 gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2494 struct obd_export *exp;
2496 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2497 class_export_get(exp);
2501 gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2503 struct obd_export *exp;
2505 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2506 class_export_put(exp);
2509 static struct cfs_hash_ops gen_hash_ops = {
2510 .hs_hash = gen_hash,
2512 .hs_keycmp = gen_kepcmp,
2513 .hs_object = gen_export_object,
2514 .hs_get = gen_export_get,
2515 .hs_put_locked = gen_export_put_locked,
2518 #endif /* HAVE_SERVER_SUPPORT */