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/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/obdclass/obd_config.c
37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <linux/kobject.h>
40 #include <linux/string.h>
42 #include <llog_swab.h>
43 #include <lprocfs_status.h>
44 #include <lustre_disk.h>
45 #include <uapi/linux/lustre/lustre_ioctl.h>
46 #include <lustre_log.h>
47 #include <uapi/linux/lustre/lustre_param.h>
48 #include <obd_class.h>
50 #include "llog_internal.h"
52 #ifdef HAVE_SERVER_SUPPORT
53 static struct cfs_hash_ops nid_stat_hash_ops;
54 static struct cfs_hash_ops gen_hash_ops;
55 #endif /* HAVE_SERVER_SUPPORT */
58 * uuid<->export lustre hash operations
61 * NOTE: It is impossible to find an export that is in failed
62 * state with this function
65 uuid_keycmp(struct rhashtable_compare_arg *arg, const void *obj)
67 const struct obd_uuid *uuid = arg->key;
68 const struct obd_export *exp = obj;
70 if (obd_uuid_equals(uuid, &exp->exp_client_uuid) &&
77 obd_export_exit(void *vexport, void *data)
79 struct obd_export *exp = vexport;
81 class_export_put(exp);
84 static const struct rhashtable_params uuid_hash_params = {
85 .key_len = sizeof(struct obd_uuid),
86 .key_offset = offsetof(struct obd_export, exp_client_uuid),
87 .head_offset = offsetof(struct obd_export, exp_uuid_hash),
88 .obj_cmpfn = uuid_keycmp,
89 .max_size = MAX_OBD_DEVICES,
90 .automatic_shrinking = true,
93 int obd_uuid_add(struct obd_device *obd, struct obd_export *export)
97 class_export_get(export);
99 rc = rhashtable_lookup_insert_fast(&obd->obd_uuid_hash,
100 &export->exp_uuid_hash,
103 class_export_put(export);
105 /* map obscure error codes to -ENOMEM */
115 EXPORT_SYMBOL(obd_uuid_add);
117 void obd_uuid_del(struct obd_device *obd, struct obd_export *export)
122 rc = rhashtable_remove_fast(&obd->obd_uuid_hash,
123 &export->exp_uuid_hash,
126 class_export_put(export);
129 EXPORT_SYMBOL(obd_uuid_del);
131 #ifdef HAVE_SERVER_SUPPORT
132 /* obd_uuid_lookup() is used only server side by target_handle_connect(),
133 * mdt_hsm_agent_send(), and obd_export_evict_by_uuid().
135 struct obd_export *obd_uuid_lookup(struct obd_device *obd,
136 struct obd_uuid *uuid)
138 struct obd_export *export = NULL;
141 export = rhashtable_lookup_fast(&obd->obd_uuid_hash, uuid,
143 if (export && !refcount_inc_not_zero(&export->exp_handle.h_ref))
149 EXPORT_SYMBOL(obd_uuid_lookup);
152 * nid<->export hash operations
154 static u32 nid_keyhash(const void *data, u32 key_len, u32 seed)
156 const struct obd_export *exp = data;
159 if (!exp->exp_connection)
162 key = &exp->exp_connection->c_peer.nid;
163 return jhash2(key, key_len / sizeof(u32), seed);
167 * NOTE: It is impossible to find an export that is in failed
168 * state with this function
171 nid_keycmp(struct rhashtable_compare_arg *arg, const void *obj)
173 const lnet_nid_t *nid = arg->key;
174 const struct obd_export *exp = obj;
176 if (exp->exp_connection->c_peer.nid == *nid)
183 nid_export_exit(void *vexport, void *data)
185 struct obd_export *exp = vexport;
187 class_export_put(exp);
190 static const struct rhashtable_params nid_hash_params = {
191 .key_len = sizeof(lnet_nid_t),
192 .head_offset = offsetof(struct obd_export, exp_nid_hash),
193 .obj_hashfn = nid_keyhash,
194 .obj_cmpfn = nid_keycmp,
195 .automatic_shrinking = true,
198 int obd_nid_add(struct obd_device *obd, struct obd_export *exp)
202 if (exp == exp->exp_obd->obd_self_export || exp->exp_hashed)
205 class_export_get(exp);
206 rc = rhltable_insert_key(&obd->obd_nid_hash,
207 &exp->exp_connection->c_peer.nid,
211 class_export_put(exp);
212 /* map obscure error codes to -ENOMEM */
219 EXPORT_SYMBOL(obd_nid_add);
221 void obd_nid_del(struct obd_device *obd, struct obd_export *exp)
225 if (exp == exp->exp_obd->obd_self_export || !exp->exp_hashed)
228 rc = rhltable_remove(&obd->obd_nid_hash, &exp->exp_nid_hash,
231 class_export_put(exp);
235 EXPORT_SYMBOL(obd_nid_del);
237 int obd_nid_export_for_each(struct obd_device *obd, lnet_nid_t nid,
238 int cb(struct obd_export *exp, void *data),
241 struct rhlist_head *exports, *tmp;
242 struct obd_export *exp;
246 exports = rhltable_lookup(&obd->obd_nid_hash, &nid, nid_hash_params);
252 rhl_for_each_entry_rcu(exp, tmp, exports, exp_nid_hash) {
253 if (!exp->exp_failed && cb(exp, data))
261 EXPORT_SYMBOL(obd_nid_export_for_each);
262 #endif /* HAVE_SERVER_SUPPORT */
264 /*********** string parsing utils *********/
266 /* returns 0 if we find this key in the buffer, else 1 */
267 int class_find_param(char *buf, char *key, char **valp)
274 ptr = strstr(buf, key);
279 *valp = ptr + strlen(key);
283 EXPORT_SYMBOL(class_find_param);
286 * Check whether the proc parameter \a param is an old parameter or not from
287 * the array \a ptr which contains the mapping from old parameters to new ones.
288 * If it's an old one, then return the pointer to the cfg_interop_param struc-
289 * ture which contains both the old and new parameters.
291 * \param param proc parameter
292 * \param ptr an array which contains the mapping from
293 * old parameters to new ones
295 * \retval valid-pointer pointer to the cfg_interop_param structure
296 * which contains the old and new parameters
297 * \retval NULL \a param or \a ptr is NULL,
298 * or \a param is not an old parameter
300 struct cfg_interop_param *class_find_old_param(const char *param,
301 struct cfg_interop_param *ptr)
309 value = strchr(param, '=');
311 name_len = value - param;
313 name_len = strlen(param);
315 while (ptr->old_param) {
316 if (strncmp(param, ptr->old_param, name_len) == 0 &&
317 name_len == strlen(ptr->old_param))
324 EXPORT_SYMBOL(class_find_old_param);
327 * Finds a parameter in \a params and copies it to \a copy.
329 * Leading spaces are skipped. Next space or end of string is the
330 * parameter terminator with the exception that spaces inside single or double
331 * quotes get included into a parameter. The parameter is copied into \a copy
332 * which has to be allocated big enough by a caller, quotes are stripped in
333 * the copy and the copy is terminated by 0.
335 * On return \a params is set to next parameter or to NULL if last
336 * parameter is returned.
338 * \retval 0 if parameter is returned in \a copy
339 * \retval 1 otherwise
340 * \retval -EINVAL if unbalanced quota is found
342 int class_get_next_param(char **params, char *copy)
357 q1 = strpbrk(str, " '\"");
360 memcpy(copy, str, len);
367 memcpy(copy, str, len);
373 memcpy(copy, str, len);
376 /* search for the matching closing quote */
378 q2 = strchr(str, *q1);
380 CERROR("Unbalanced quota in parameters: \"%s\"\n",
385 memcpy(copy, str, len);
391 EXPORT_SYMBOL(class_get_next_param);
394 * returns 0 if this is the first key in the buffer, else 1.
395 * valp points to first char after key.
397 int class_match_param(char *buf, const char *key, char **valp)
402 if (memcmp(buf, key, strlen(key)) != 0)
406 *valp = buf + strlen(key);
410 EXPORT_SYMBOL(class_match_param);
412 static int parse_nid(char *buf, void *value, int quiet)
414 lnet_nid_t *nid = (lnet_nid_t *)value;
416 *nid = libcfs_str2nid(buf);
417 if (*nid != LNET_NID_ANY)
421 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
425 static int parse_net(char *buf, void *value)
427 __u32 *net = (__u32 *)value;
429 *net = libcfs_str2net(buf);
430 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
443 * endh is set to next separator
445 static int class_parse_value(char *buf, int opc, void *value, char **endh,
454 while (*buf == ',' || *buf == ':')
456 if (*buf == ' ' || *buf == '/' || *buf == '\0')
459 /* NID separators or end of NIDs */
460 endp = strpbrk(buf, ",: /");
462 endp = buf + strlen(buf);
469 case CLASS_PARSE_NID:
470 rc = parse_nid(buf, value, quiet);
472 case CLASS_PARSE_NET:
473 rc = parse_net(buf, value);
484 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
486 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
488 EXPORT_SYMBOL(class_parse_nid);
490 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
492 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
494 EXPORT_SYMBOL(class_parse_nid_quiet);
496 int class_parse_net(char *buf, __u32 *net, char **endh)
498 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
502 * 1 param contains key and match
503 * 0 param contains key and not match
504 * -1 param does not contain key
506 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
511 while (class_find_param(buf, key, &buf) == 0) {
513 * please restrict to the NIDs pertaining to
516 while (class_parse_nid(buf, &tmp, &buf) == 0) {
525 int class_match_net(char *buf, char *key, __u32 net)
530 while (class_find_param(buf, key, &buf) == 0) {
532 * please restrict to the NIDs pertaining to
533 * the specified networks
535 while (class_parse_net(buf, &tmp, &buf) == 0) {
544 char *lustre_cfg_string(struct lustre_cfg *lcfg, u32 index)
548 if (!lcfg->lcfg_buflens[index])
551 s = lustre_cfg_buf(lcfg, index);
556 * make sure it's NULL terminated, even if this kills a char
557 * of data. Try to use the padding first though.
559 if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
560 size_t last = ALIGN(lcfg->lcfg_buflens[index], 8) - 1;
563 /* Use the smaller value */
564 if (last > lcfg->lcfg_buflens[index])
565 last = lcfg->lcfg_buflens[index];
570 CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
576 EXPORT_SYMBOL(lustre_cfg_string);
578 /********************** class fns **********************/
581 * Create a new OBD device and set the type, name and uuid. If successful,
582 * the new device can be accessed by either name or uuid.
584 int class_attach(struct lustre_cfg *lcfg)
586 struct obd_export *exp;
587 struct obd_device *obd = NULL;
588 char *typename, *name, *uuid;
593 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
594 CERROR("No type passed!\n");
597 typename = lustre_cfg_string(lcfg, 1);
599 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
600 CERROR("No name passed!\n");
603 name = lustre_cfg_string(lcfg, 0);
604 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
605 CERROR("No UUID passed!\n");
609 uuid = lustre_cfg_string(lcfg, 2);
611 if (len >= sizeof(obd->obd_uuid)) {
612 CERROR("%s: uuid must be < %d bytes long\n",
613 name, (int)sizeof(obd->obd_uuid));
617 obd = class_newdev(typename, name, uuid);
618 if (IS_ERR(obd)) { /* Already exists or out of obds */
620 CERROR("Cannot create device %s of type %s : %d\n",
624 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
625 "obd %p obd_magic %08X != %08X\n",
626 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
627 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
628 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
630 exp = class_new_export_self(obd, &obd->obd_uuid);
637 obd->obd_self_export = exp;
638 list_del_init(&exp->exp_obd_chain_timed);
639 class_export_put(exp);
641 rc = class_register_device(obd);
643 class_decref(obd, "newdev", obd);
647 obd->obd_attached = 1;
648 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
649 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
653 EXPORT_SYMBOL(class_attach);
656 * Create hashes, self-export, and call type-specific setup.
657 * Setup is effectively the "start this obd" call.
659 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
665 LASSERT(obd != NULL);
666 LASSERTF(obd == class_num2obd(obd->obd_minor),
667 "obd %p != obd_devs[%d] %p\n",
668 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
669 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
670 "obd %p obd_magic %08x != %08x\n",
671 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
673 /* have we attached a type to this device? */
674 if (!obd->obd_attached) {
675 CERROR("Device %d not attached\n", obd->obd_minor);
679 if (obd->obd_set_up) {
680 CERROR("Device %d already setup (type %s)\n",
681 obd->obd_minor, obd->obd_type->typ_name);
685 /* is someone else setting us up right now? (attach inits spinlock) */
686 spin_lock(&obd->obd_dev_lock);
687 if (obd->obd_starting) {
688 spin_unlock(&obd->obd_dev_lock);
689 CERROR("Device %d setup in progress (type %s)\n",
690 obd->obd_minor, obd->obd_type->typ_name);
694 * just leave this on forever. I can't use obd_set_up here because
695 * other fns check that status, and we're not actually set up yet.
697 obd->obd_starting = 1;
698 obd->obd_nid_stats_hash = NULL;
699 obd->obd_gen_hash = NULL;
700 spin_unlock(&obd->obd_dev_lock);
702 /* create an uuid-export lustre hash */
703 err = rhashtable_init(&obd->obd_uuid_hash, &uuid_hash_params);
705 GOTO(err_starting, err);
707 #ifdef HAVE_SERVER_SUPPORT
708 /* create a nid-export lustre hash */
709 err = rhltable_init(&obd->obd_nid_hash, &nid_hash_params);
711 GOTO(err_uuid_hash, err = -ENOMEM);
713 /* create a nid-stats lustre hash */
714 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
715 HASH_NID_STATS_CUR_BITS,
716 HASH_NID_STATS_MAX_BITS,
717 HASH_NID_STATS_BKT_BITS, 0,
722 if (!obd->obd_nid_stats_hash)
723 GOTO(err_nid_hash, err = -ENOMEM);
725 /* create a client_generation-export lustre hash */
726 obd->obd_gen_hash = cfs_hash_create("UUID_HASH",
729 HASH_GEN_BKT_BITS, 0,
732 &gen_hash_ops, CFS_HASH_DEFAULT);
733 if (!obd->obd_gen_hash)
734 GOTO(err_nid_stats_hash, err = -ENOMEM);
735 #endif /* HAVE_SERVER_SUPPORT */
737 err = obd_setup(obd, lcfg);
739 #ifdef HAVE_SERVER_SUPPORT
740 GOTO(err_gen_hash, err);
742 GOTO(err_uuid_hash, err);
743 #endif /* ! HAVE_SERVER_SUPPORT */
747 spin_lock(&obd->obd_dev_lock);
748 /* cleanup drops this */
749 class_incref(obd, "setup", obd);
750 spin_unlock(&obd->obd_dev_lock);
752 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
753 obd->obd_name, obd->obd_uuid.uuid);
757 #ifdef HAVE_SERVER_SUPPORT
759 if (obd->obd_gen_hash) {
760 cfs_hash_putref(obd->obd_gen_hash);
761 obd->obd_gen_hash = NULL;
764 if (obd->obd_nid_stats_hash) {
765 cfs_hash_putref(obd->obd_nid_stats_hash);
766 obd->obd_nid_stats_hash = NULL;
769 rhltable_destroy(&obd->obd_nid_hash);
770 #endif /* HAVE_SERVER_SUPPORT */
772 rhashtable_destroy(&obd->obd_uuid_hash);
774 obd->obd_starting = 0;
775 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
778 EXPORT_SYMBOL(class_setup);
781 * We have finished using this OBD and are ready to destroy it.
782 * There can be no more references to this obd.
784 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
788 if (obd->obd_set_up) {
789 CERROR("OBD device %d still set up\n", obd->obd_minor);
793 spin_lock(&obd->obd_dev_lock);
794 if (!obd->obd_attached) {
795 spin_unlock(&obd->obd_dev_lock);
796 CERROR("OBD device %d not attached\n", obd->obd_minor);
799 obd->obd_attached = 0;
800 spin_unlock(&obd->obd_dev_lock);
802 /* cleanup in progress. we don't like to find this device after now */
803 class_unregister_device(obd);
805 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
806 obd->obd_name, obd->obd_uuid.uuid);
808 class_decref(obd, "newdev", obd);
812 EXPORT_SYMBOL(class_detach);
815 * Start shutting down the OBD. There may be in-progess ops when
816 * this is called. We tell them to start shutting down with a call
817 * to class_disconnect_exports().
819 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
825 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
827 if (!obd->obd_set_up) {
828 CERROR("Device %d not setup\n", obd->obd_minor);
832 spin_lock(&obd->obd_dev_lock);
833 if (obd->obd_stopping) {
834 spin_unlock(&obd->obd_dev_lock);
835 CERROR("OBD %d already stopping\n", obd->obd_minor);
838 /* Leave this on forever */
839 obd->obd_stopping = 1;
840 spin_unlock(&obd->obd_dev_lock);
842 /* wait for already-arrived-connections to finish. */
843 while (obd->obd_conn_inprogress > 0)
847 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
848 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
854 LCONSOLE_WARN("Failing over %s\n",
856 spin_lock(&obd->obd_dev_lock);
858 #ifdef HAVE_SERVER_SUPPORT
859 obd->obd_no_transno = 1;
861 obd->obd_no_recov = 1;
862 spin_unlock(&obd->obd_dev_lock);
863 if (OBP(obd, iocontrol)) {
864 obd_iocontrol(OBD_IOC_SYNC,
865 obd->obd_self_export,
870 CERROR("Unrecognised flag '%c'\n", *flag);
874 LASSERT(obd->obd_self_export);
876 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d/%d\n",
877 obd->obd_name, obd->obd_num_exports,
878 atomic_read(&obd->obd_refcount) - 2);
879 dump_exports(obd, 0, D_HA);
880 class_disconnect_exports(obd);
882 /* Precleanup, we must make sure all exports get destroyed. */
883 err = obd_precleanup(obd);
885 CERROR("Precleanup %s returned %d\n",
888 /* destroy an uuid-export hash body */
889 rhashtable_free_and_destroy(&obd->obd_uuid_hash, obd_export_exit,
891 #ifdef HAVE_SERVER_SUPPORT
892 /* destroy a nid-export hash body */
893 rhltable_free_and_destroy(&obd->obd_nid_hash, nid_export_exit, NULL);
895 /* destroy a nid-stats hash body */
896 if (obd->obd_nid_stats_hash) {
897 cfs_hash_putref(obd->obd_nid_stats_hash);
898 obd->obd_nid_stats_hash = NULL;
901 /* destroy a client_generation-export hash body */
902 if (obd->obd_gen_hash) {
903 cfs_hash_putref(obd->obd_gen_hash);
904 obd->obd_gen_hash = NULL;
906 #endif /* HAVE_SERVER_SUPPORT */
907 class_decref(obd, "setup", obd);
913 struct obd_device *class_incref(struct obd_device *obd,
917 lu_ref_add_atomic(&obd->obd_reference, scope, source);
918 atomic_inc(&obd->obd_refcount);
919 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
920 atomic_read(&obd->obd_refcount));
924 EXPORT_SYMBOL(class_incref);
926 void class_decref(struct obd_device *obd, const char *scope, const void *source)
930 CDEBUG(D_INFO, "Decref %s (%p) now %d - %s\n", obd->obd_name, obd,
931 atomic_read(&obd->obd_refcount), scope);
933 LASSERT(obd->obd_num_exports >= 0);
934 last = atomic_dec_and_test(&obd->obd_refcount);
935 lu_ref_del(&obd->obd_reference, scope, source);
938 struct obd_export *exp;
940 LASSERT(!obd->obd_attached);
942 * All exports have been destroyed; there should
943 * be no more in-progress ops by this point.
945 exp = obd->obd_self_export;
948 exp->exp_flags |= exp_flags_from_obd(obd);
949 class_unlink_export(exp);
953 EXPORT_SYMBOL(class_decref);
956 * Add a failover NID location.
957 * Client OBD types contact server OBD types using this NID list.
959 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
961 struct obd_import *imp;
962 struct obd_uuid uuid;
967 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
968 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
969 CERROR("invalid conn_uuid\n");
972 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
973 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
974 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
975 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
976 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
977 CERROR("can't add connection on non-client dev\n");
981 imp = obd->u.cli.cl_import;
983 CERROR("try to add conn on immature client dev\n");
987 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
988 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
993 /** Remove a failover NID location. */
994 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
996 struct obd_import *imp;
997 struct obd_uuid uuid;
1002 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1003 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
1004 CERROR("invalid conn_uuid\n");
1007 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
1008 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
1009 CERROR("can't del connection on non-client dev\n");
1013 imp = obd->u.cli.cl_import;
1015 CERROR("try to del conn on immature client dev\n");
1019 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
1020 rc = obd_del_conn(imp, &uuid);
1025 static LIST_HEAD(lustre_profile_list);
1026 static DEFINE_SPINLOCK(lustre_profile_list_lock);
1028 struct lustre_profile *class_get_profile(const char *prof)
1030 struct lustre_profile *lprof;
1033 spin_lock(&lustre_profile_list_lock);
1034 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
1035 if (!strcmp(lprof->lp_profile, prof)) {
1037 spin_unlock(&lustre_profile_list_lock);
1041 spin_unlock(&lustre_profile_list_lock);
1044 EXPORT_SYMBOL(class_get_profile);
1047 * Create a named "profile".
1048 * This defines the MDC and OSC names to use for a client.
1049 * This also is used to define the LOV to be used by a MDT.
1051 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
1052 int mdclen, char *mdc)
1054 struct lustre_profile *lprof;
1059 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
1061 OBD_ALLOC(lprof, sizeof(*lprof));
1064 INIT_LIST_HEAD(&lprof->lp_list);
1066 LASSERT(proflen == (strlen(prof) + 1));
1067 OBD_ALLOC(lprof->lp_profile, proflen);
1068 if (!lprof->lp_profile)
1069 GOTO(out, err = -ENOMEM);
1070 memcpy(lprof->lp_profile, prof, proflen);
1072 LASSERT(osclen == (strlen(osc) + 1));
1073 OBD_ALLOC(lprof->lp_dt, osclen);
1075 GOTO(out, err = -ENOMEM);
1076 memcpy(lprof->lp_dt, osc, osclen);
1079 LASSERT(mdclen == (strlen(mdc) + 1));
1080 OBD_ALLOC(lprof->lp_md, mdclen);
1082 GOTO(out, err = -ENOMEM);
1083 memcpy(lprof->lp_md, mdc, mdclen);
1086 spin_lock(&lustre_profile_list_lock);
1088 lprof->lp_list_deleted = false;
1090 list_add(&lprof->lp_list, &lustre_profile_list);
1091 spin_unlock(&lustre_profile_list_lock);
1096 OBD_FREE(lprof->lp_md, mdclen);
1098 OBD_FREE(lprof->lp_dt, osclen);
1099 if (lprof->lp_profile)
1100 OBD_FREE(lprof->lp_profile, proflen);
1101 OBD_FREE(lprof, sizeof(*lprof));
1105 void class_del_profile(const char *prof)
1107 struct lustre_profile *lprof;
1111 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
1113 lprof = class_get_profile(prof);
1115 spin_lock(&lustre_profile_list_lock);
1116 /* because get profile increments the ref counter */
1118 list_del(&lprof->lp_list);
1119 lprof->lp_list_deleted = true;
1120 spin_unlock(&lustre_profile_list_lock);
1122 class_put_profile(lprof);
1126 EXPORT_SYMBOL(class_del_profile);
1128 void class_put_profile(struct lustre_profile *lprof)
1130 spin_lock(&lustre_profile_list_lock);
1131 if ((--lprof->lp_refs) > 0) {
1132 LASSERT(lprof->lp_refs > 0);
1133 spin_unlock(&lustre_profile_list_lock);
1136 spin_unlock(&lustre_profile_list_lock);
1138 /* confirm not a negative number */
1139 LASSERT(lprof->lp_refs == 0);
1142 * At least one class_del_profile/profiles must be called
1143 * on the target profile or lustre_profile_list will corrupt
1145 LASSERT(lprof->lp_list_deleted);
1146 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
1147 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
1149 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
1150 OBD_FREE(lprof, sizeof(*lprof));
1152 EXPORT_SYMBOL(class_put_profile);
1155 void class_del_profiles(void)
1157 struct lustre_profile *lprof, *n;
1160 spin_lock(&lustre_profile_list_lock);
1161 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
1162 list_del(&lprof->lp_list);
1163 lprof->lp_list_deleted = true;
1164 spin_unlock(&lustre_profile_list_lock);
1166 class_put_profile(lprof);
1168 spin_lock(&lustre_profile_list_lock);
1170 spin_unlock(&lustre_profile_list_lock);
1173 EXPORT_SYMBOL(class_del_profiles);
1176 * We can't call lquota_process_config directly because
1177 * it lives in a module that must be loaded after this one.
1179 #ifdef HAVE_SERVER_SUPPORT
1180 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
1181 #endif /* HAVE_SERVER_SUPPORT */
1184 * Rename the proc parameter in \a cfg with a new name \a new_name.
1186 * \param cfg config structure which contains the proc parameter
1187 * \param new_name new name of the proc parameter
1189 * \retval valid-pointer pointer to the newly-allocated config structure
1190 * which contains the renamed proc parameter
1191 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
1192 * not contain a proc parameter
1193 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
1195 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
1196 const char *new_name)
1198 struct lustre_cfg_bufs *bufs = NULL;
1199 struct lustre_cfg *new_cfg = NULL;
1201 char *new_param = NULL;
1208 if (!cfg || !new_name)
1209 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1211 param = lustre_cfg_string(cfg, 1);
1213 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1215 value = strchr(param, '=');
1217 name_len = value - param;
1219 name_len = strlen(param);
1221 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1223 OBD_ALLOC(new_param, new_len);
1225 GOTO(out_nocfg, new_cfg = ERR_PTR(-ENOMEM));
1227 strlcpy(new_param, new_name, new_len);
1229 strcat(new_param, value);
1231 OBD_ALLOC_PTR(bufs);
1233 GOTO(out_free_param, new_cfg = ERR_PTR(-ENOMEM));
1235 lustre_cfg_bufs_reset(bufs, NULL);
1236 lustre_cfg_bufs_init(bufs, cfg);
1237 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1239 OBD_ALLOC(new_cfg, lustre_cfg_len(bufs->lcfg_bufcount,
1240 bufs->lcfg_buflen));
1242 GOTO(out_free_buf, new_cfg = ERR_PTR(-ENOMEM));
1244 lustre_cfg_init(new_cfg, cfg->lcfg_command, bufs);
1246 new_cfg->lcfg_num = cfg->lcfg_num;
1247 new_cfg->lcfg_flags = cfg->lcfg_flags;
1248 new_cfg->lcfg_nid = cfg->lcfg_nid;
1249 new_cfg->lcfg_nal = cfg->lcfg_nal;
1253 OBD_FREE(new_param, new_len);
1257 EXPORT_SYMBOL(lustre_cfg_rename);
1259 static ssize_t process_param2_config(struct lustre_cfg *lcfg)
1261 char *param = lustre_cfg_string(lcfg, 1);
1262 char *upcall = lustre_cfg_string(lcfg, 2);
1263 struct kobject *kobj = NULL;
1264 const char *subsys = param;
1266 [0] = "/usr/sbin/lctl",
1277 print_lustre_cfg(lcfg);
1279 len = strcspn(param, ".=");
1283 /* If we find '=' then its the top level sysfs directory */
1284 if (param[len] == '=')
1285 return class_set_global(param);
1287 subsys = kstrndup(param, len, GFP_KERNEL);
1291 kobj = kset_find_obj(lustre_kset, subsys);
1294 char *value = param;
1298 param = strsep(&value, "=");
1299 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s", param);
1300 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1301 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1302 ktime_get_real_seconds());
1305 rc = kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
1306 for (i = 0; i < ARRAY_SIZE(envp); i++)
1314 /* Add upcall processing here. Now only lctl is supported */
1315 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1316 CERROR("Unsupported upcall %s\n", upcall);
1320 start = ktime_get();
1321 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1325 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1326 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1327 (long)ktime_us_delta(end, start));
1329 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1330 argv[0], argv[1], argv[2],
1331 (long)ktime_us_delta(end, start));
1338 #ifdef HAVE_SERVER_SUPPORT
1339 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1341 quota_process_config = qpc;
1343 EXPORT_SYMBOL(lustre_register_quota_process_config);
1344 #endif /* HAVE_SERVER_SUPPORT */
1346 #define QMT0_DEV_NAME_LEN (LUSTRE_MAXFSNAME + sizeof("-QMT0000"))
1347 static struct obd_device *obd_find_qmt0(char *obd_name)
1349 char qmt_name[QMT0_DEV_NAME_LEN];
1350 struct obd_device *qmt = NULL;
1352 if (!server_name2fsname(obd_name, qmt_name, NULL)) {
1353 strlcat(qmt_name, "-QMT0000", QMT0_DEV_NAME_LEN);
1354 qmt = class_name2obd(qmt_name);
1361 * Process configuration commands given in lustre_cfg form.
1362 * These may come from direct calls (e.g. class_manual_cleanup)
1363 * or processing the config llog, or ioctl from lctl.
1365 int class_process_config(struct lustre_cfg *lcfg)
1367 struct obd_device *obd;
1370 LASSERT(lcfg && !IS_ERR(lcfg));
1371 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1373 /* Commands that don't need a device */
1374 switch (lcfg->lcfg_command) {
1376 err = class_attach(lcfg);
1379 case LCFG_ADD_UUID: {
1381 "adding mapping from uuid %s to nid %#llx (%s)\n",
1382 lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid,
1383 libcfs_nid2str(lcfg->lcfg_nid));
1385 err = class_add_uuid(lustre_cfg_string(lcfg, 1),
1389 case LCFG_DEL_UUID: {
1390 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1391 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) ==
1392 0) ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1394 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1397 case LCFG_MOUNTOPT: {
1398 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1399 lustre_cfg_string(lcfg, 1),
1400 lustre_cfg_string(lcfg, 2),
1401 lustre_cfg_string(lcfg, 3));
1403 * set these mount options somewhere, so ll_fill_super
1406 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1407 lustre_cfg_string(lcfg, 1),
1408 LUSTRE_CFG_BUFLEN(lcfg, 2),
1409 lustre_cfg_string(lcfg, 2),
1410 LUSTRE_CFG_BUFLEN(lcfg, 3),
1411 lustre_cfg_string(lcfg, 3));
1414 case LCFG_DEL_MOUNTOPT: {
1415 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1416 lustre_cfg_string(lcfg, 1));
1417 class_del_profile(lustre_cfg_string(lcfg, 1));
1420 case LCFG_SET_TIMEOUT: {
1421 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1422 obd_timeout, lcfg->lcfg_num);
1423 obd_timeout = max(lcfg->lcfg_num, 1U);
1424 obd_timeout_set = 1;
1427 case LCFG_SET_LDLM_TIMEOUT: {
1428 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1429 ldlm_timeout, lcfg->lcfg_num);
1430 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1431 if (ldlm_timeout >= obd_timeout)
1432 ldlm_timeout = max(obd_timeout / 3, 1U);
1433 ldlm_timeout_set = 1;
1436 case LCFG_SET_UPCALL: {
1437 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1438 /* COMPAT_146 Don't fail on old configs */
1442 struct cfg_marker *marker;
1444 marker = lustre_cfg_buf(lcfg, 1);
1445 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1446 marker->cm_flags, marker->cm_tgtname,
1447 marker->cm_comment);
1453 /* llite has no OBD */
1454 if (class_match_param(lustre_cfg_string(lcfg, 1),
1455 PARAM_LLITE, NULL) == 0) {
1456 struct lustre_sb_info *lsi;
1461 * The instance name contains the sb:
1462 * lustre-client-aacfe000
1464 tmp = strrchr(lustre_cfg_string(lcfg, 0), '-');
1465 if (!tmp || !*(++tmp))
1466 GOTO(out, err = -EINVAL);
1468 if (sscanf(tmp, "%lx", &addr) != 1)
1469 GOTO(out, err = -EINVAL);
1471 lsi = s2lsi((struct super_block *)addr);
1472 /* This better be a real Lustre superblock! */
1473 LASSERT(lsi->lsi_lmd->lmd_magic == LMD_MAGIC);
1475 count = class_modify_config(lcfg, PARAM_LLITE,
1477 err = count < 0 ? count : 0;
1479 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1480 PARAM_SYS, &tmp) == 0)) {
1481 /* Global param settings */
1482 err = class_set_global(tmp);
1484 * Client or server should not fail to mount if
1485 * it hits an unknown configuration parameter.
1488 CWARN("Ignoring unknown param %s\n", tmp);
1491 #ifdef HAVE_SERVER_SUPPORT
1492 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1493 PARAM_QUOTA, &tmp) == 0) &&
1494 quota_process_config) {
1495 err = (*quota_process_config)(lcfg);
1497 #endif /* HAVE_SERVER_SUPPORT */
1502 case LCFG_SET_PARAM: {
1503 err = process_param2_config(lcfg);
1507 /* Commands that require a device */
1508 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1510 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1511 CERROR("this lcfg command requires a device name\n");
1513 CERROR("no device for: %s\n",
1514 lustre_cfg_string(lcfg, 0));
1516 GOTO(out, err = -EINVAL);
1518 switch(lcfg->lcfg_command) {
1520 err = class_setup(obd, lcfg);
1524 err = class_detach(obd, lcfg);
1527 case LCFG_CLEANUP: {
1528 err = class_cleanup(obd, lcfg);
1531 case LCFG_ADD_CONN: {
1532 err = class_add_conn(obd, lcfg);
1535 case LCFG_DEL_CONN: {
1536 err = class_del_conn(obd, lcfg);
1539 case LCFG_POOL_NEW: {
1540 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1541 if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
1542 obd = obd_find_qmt0(obd->obd_name);
1544 obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1548 case LCFG_POOL_ADD: {
1549 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1550 lustre_cfg_string(lcfg, 3));
1551 if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
1552 obd = obd_find_qmt0(obd->obd_name);
1554 obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1555 lustre_cfg_string(lcfg, 3));
1559 case LCFG_POOL_REM: {
1560 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1561 lustre_cfg_string(lcfg, 3));
1562 if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
1563 obd = obd_find_qmt0(obd->obd_name);
1565 obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1566 lustre_cfg_string(lcfg, 3));
1570 case LCFG_POOL_DEL: {
1571 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1572 if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
1573 obd = obd_find_qmt0(obd->obd_name);
1575 obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1580 * Process config log ADD_MDC record twice to add MDC also to LOV
1583 * add 0:lustre-clilmv 1:lustre-MDT0000_UUID 2:0 3:1
1584 * 4:lustre-MDT0000-mdc_UUID
1586 case LCFG_ADD_MDC: {
1587 struct obd_device *lov_obd;
1590 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1594 /* make sure this is client LMV log entry */
1595 clilmv = strstr(lustre_cfg_string(lcfg, 0), "clilmv");
1600 * replace 'lmv' with 'lov' name to address LOV device and
1601 * process llog record to add MDC there.
1604 lov_obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1606 err = obd_process_config(lov_obd, sizeof(*lcfg), lcfg);
1609 CERROR("%s: Cannot find LOV by %s name, rc = %d\n",
1610 obd->obd_name, lustre_cfg_string(lcfg, 0), err);
1612 /* restore 'lmv' name */
1617 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1623 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1624 CWARN("Ignoring error %d on optional command %#x\n", err,
1625 lcfg->lcfg_command);
1630 EXPORT_SYMBOL(class_process_config);
1632 ssize_t class_modify_config(struct lustre_cfg *lcfg, const char *prefix,
1633 struct kobject *kobj)
1635 struct kobj_type *typ;
1639 if (lcfg->lcfg_command != LCFG_PARAM) {
1640 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1644 typ = get_ktype(kobj);
1645 if (!typ || !typ->default_attrs)
1648 print_lustre_cfg(lcfg);
1651 * e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1652 * or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1653 * or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36
1655 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1656 struct attribute *attr;
1662 key = lustre_cfg_buf(lcfg, i);
1663 /* Strip off prefix */
1664 if (class_match_param(key, prefix, &key))
1666 * If the prefix doesn't match, return error so we
1667 * can pass it down the stack
1671 value = strchr(key, '=');
1672 if (!value || *(value + 1) == 0) {
1673 CERROR("%s: can't parse param '%s' (missing '=')\n",
1674 lustre_cfg_string(lcfg, 0),
1675 lustre_cfg_string(lcfg, i));
1676 /* continue parsing other params */
1679 keylen = value - key;
1683 for (j = 0; typ->default_attrs[j]; j++) {
1684 if (!strncmp(typ->default_attrs[j]->name, key,
1686 attr = typ->default_attrs[j];
1692 char *envp[4], *param, *path;
1694 path = kobject_get_path(kobj, GFP_KERNEL);
1698 /* convert sysfs path to uevent format */
1700 while ((param = strchr(param, '/')) != NULL)
1703 param = strstr(path, "fs.lustre.") + 10;
1705 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s.%.*s",
1706 param, (int) keylen, key);
1707 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1708 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1709 ktime_get_real_seconds());
1712 if (kobject_uevent_env(kobj, KOBJ_CHANGE, envp)) {
1713 CERROR("%s: failed to send uevent %s\n",
1714 kobject_name(kobj), key);
1717 for (i = 0; i < ARRAY_SIZE(envp); i++)
1721 count += lustre_attr_store(kobj, attr, value,
1727 EXPORT_SYMBOL(class_modify_config);
1730 * Supplemental functions for config logs, it allocates lustre_cfg
1731 * buffers plus initialized llog record header at the beginning.
1733 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1735 struct llog_cfg_rec *lcr;
1740 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1741 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1742 sizeof(struct llog_rec_tail);
1744 OBD_ALLOC(lcr, reclen);
1748 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1750 lcr->lcr_hdr.lrh_len = reclen;
1751 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1755 EXPORT_SYMBOL(lustre_cfg_rec_new);
1757 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1760 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1763 EXPORT_SYMBOL(lustre_cfg_rec_free);
1766 * Parse a configuration llog, doing various manipulations on them
1767 * for various reasons, (modifications for compatibility, skip obsolete
1768 * records, change uuids, etc), then class_process_config() resulting
1771 int class_config_llog_handler(const struct lu_env *env,
1772 struct llog_handle *handle,
1773 struct llog_rec_hdr *rec, void *data)
1775 struct config_llog_instance *cfg = data;
1776 int cfg_len = rec->lrh_len;
1777 char *cfg_buf = (char *) (rec + 1);
1781 /* class_config_dump_handler(handle, rec, data); */
1783 switch (rec->lrh_type) {
1785 struct lustre_cfg *lcfg, *lcfg_new;
1786 struct lustre_cfg_bufs bufs;
1787 char *inst_name = NULL;
1791 lcfg = (struct lustre_cfg *)cfg_buf;
1792 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1793 lustre_swab_lustre_cfg(lcfg);
1797 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1801 /* Figure out config state info */
1802 if (lcfg->lcfg_command == LCFG_MARKER) {
1803 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1804 lustre_swab_cfg_marker(marker, swab,
1805 LUSTRE_CFG_BUFLEN(lcfg, 1));
1806 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1807 cfg->cfg_flags, marker->cm_flags);
1808 if (marker->cm_flags & CM_START) {
1809 /* all previous flags off */
1810 cfg->cfg_flags = CFG_F_MARKER;
1811 server_name2index(marker->cm_tgtname,
1812 &cfg->cfg_lwp_idx, NULL);
1813 if (marker->cm_flags & CM_SKIP) {
1814 cfg->cfg_flags |= CFG_F_SKIP;
1815 CDEBUG(D_CONFIG, "SKIP #%d\n",
1817 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1819 lustre_check_exclusion(cfg->cfg_sb,
1820 marker->cm_tgtname))) {
1821 cfg->cfg_flags |= CFG_F_EXCLUDE;
1822 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1825 } else if (marker->cm_flags & CM_END) {
1830 * A config command without a start marker before it is
1833 if (!(cfg->cfg_flags & CFG_F_MARKER) &&
1834 (lcfg->lcfg_command != LCFG_MARKER)) {
1835 CWARN("Skip config outside markers, (inst: %016lx, uuid: %s, flags: %#x)\n",
1837 cfg->cfg_uuid.uuid, cfg->cfg_flags);
1838 cfg->cfg_flags |= CFG_F_SKIP;
1840 if (cfg->cfg_flags & CFG_F_SKIP) {
1841 CDEBUG(D_CONFIG, "skipping %#x\n",
1844 /* No processing! */
1849 * For interoperability between 1.8 and 2.0,
1850 * rename "mds" OBD device type to "mdt".
1853 char *typename = lustre_cfg_string(lcfg, 1);
1854 char *index = lustre_cfg_string(lcfg, 2);
1856 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1857 strcmp(typename, "mds") == 0)) {
1858 CWARN("For 1.8 interoperability, rename obd "
1859 "type from mds to mdt\n");
1862 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1863 strcmp(index, "type") == 0)) {
1864 CDEBUG(D_INFO, "For 1.8 interoperability, "
1865 "set this index to '0'\n");
1871 #ifdef HAVE_SERVER_SUPPORT
1872 /* newer MDS replaces LOV/OSC with LOD/OSP */
1873 if ((lcfg->lcfg_command == LCFG_ATTACH ||
1874 lcfg->lcfg_command == LCFG_SET_PARAM ||
1875 lcfg->lcfg_command == LCFG_PARAM) &&
1876 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1877 char *typename = lustre_cfg_string(lcfg, 1);
1880 strcmp(typename, LUSTRE_LOV_NAME) == 0) {
1882 "For 2.x interoperability, rename obd "
1883 "type from lov to lod (%s)\n",
1884 s2lsi(cfg->cfg_sb)->lsi_svname);
1885 strcpy(typename, LUSTRE_LOD_NAME);
1888 strcmp(typename, LUSTRE_OSC_NAME) == 0) {
1890 "For 2.x interoperability, rename obd "
1891 "type from osc to osp (%s)\n",
1892 s2lsi(cfg->cfg_sb)->lsi_svname);
1893 strcpy(typename, LUSTRE_OSP_NAME);
1896 #endif /* HAVE_SERVER_SUPPORT */
1898 if (cfg->cfg_flags & CFG_F_EXCLUDE) {
1899 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1900 lcfg->lcfg_command);
1901 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1902 /* Add inactive instead */
1903 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1906 lustre_cfg_bufs_reset(&bufs, NULL);
1907 lustre_cfg_bufs_init(&bufs, lcfg);
1909 if (cfg->cfg_instance &&
1910 lcfg->lcfg_command != LCFG_SPTLRPC_CONF &&
1911 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1912 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1913 LUSTRE_MAXINSTANCE + 4;
1914 OBD_ALLOC(inst_name, inst_len);
1916 GOTO(out, rc = -ENOMEM);
1917 snprintf(inst_name, inst_len, "%s-%016lx",
1918 lustre_cfg_string(lcfg, 0),
1920 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1921 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1922 lcfg->lcfg_command, inst_name);
1925 /* override llog UUID for clients, to insure they are unique */
1926 if (cfg->cfg_instance && lcfg->lcfg_command == LCFG_ATTACH)
1927 lustre_cfg_bufs_set_string(&bufs, 2,
1928 cfg->cfg_uuid.uuid);
1930 * sptlrpc config record, we expect 2 data segments:
1931 * [0]: fs_name/target_name,
1933 * moving them to index [1] and [2], and insert MGC's
1934 * obdname at index [0].
1936 if (cfg->cfg_instance &&
1937 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1938 /* After ASLR changes cfg_instance this needs fixing */
1939 /* "obd" is set in config_log_find_or_add() */
1940 struct obd_device *obd = (void *)cfg->cfg_instance;
1942 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1943 bufs.lcfg_buflen[1]);
1944 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1945 bufs.lcfg_buflen[0]);
1946 lustre_cfg_bufs_set_string(&bufs, 0,
1951 * Add net info to setup command
1952 * if given on command line.
1953 * So config log will be:
1957 * [3]: inactive-on-startup
1958 * [4]: restrictive net
1960 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1961 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1962 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1963 char *nidnet = lsi->lsi_lmd->lmd_nidnet;
1965 if (lcfg->lcfg_command == LCFG_SETUP &&
1966 lcfg->lcfg_bufcount != 2 && nidnet) {
1967 CDEBUG(D_CONFIG, "Adding net %s info to setup "
1968 "command for client %s\n", nidnet,
1969 lustre_cfg_string(lcfg, 0));
1970 lustre_cfg_bufs_set_string(&bufs, 4, nidnet);
1975 * Skip add_conn command if uuid is
1976 * not on restricted net
1978 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1979 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1980 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1981 char *uuid_str = lustre_cfg_string(lcfg, 1);
1983 if (lcfg->lcfg_command == LCFG_ADD_CONN &&
1984 lsi->lsi_lmd->lmd_nidnet &&
1985 LNET_NIDNET(libcfs_str2nid(uuid_str)) !=
1986 libcfs_str2net(lsi->lsi_lmd->lmd_nidnet)) {
1987 CDEBUG(D_CONFIG, "skipping add_conn for %s\n",
1990 /* No processing! */
1995 OBD_ALLOC(lcfg_new, lustre_cfg_len(bufs.lcfg_bufcount,
1998 GOTO(out, rc = -ENOMEM);
2000 lustre_cfg_init(lcfg_new, lcfg->lcfg_command, &bufs);
2001 lcfg_new->lcfg_num = lcfg->lcfg_num;
2002 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
2005 * XXX Hack to try to remain binary compatible with
2006 * pre-newconfig logs
2008 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
2009 (lcfg->lcfg_nid >> 32) == 0) {
2010 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
2012 lcfg_new->lcfg_nid =
2013 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
2014 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
2015 lcfg->lcfg_nal, addr,
2016 libcfs_nid2str(lcfg_new->lcfg_nid));
2018 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
2021 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
2023 rc = class_process_config(lcfg_new);
2024 OBD_FREE(lcfg_new, lustre_cfg_len(lcfg_new->lcfg_bufcount,
2025 lcfg_new->lcfg_buflens));
2027 OBD_FREE(inst_name, inst_len);
2031 CERROR("Unknown llog record type %#x encountered\n",
2037 CERROR("%s: cfg command failed: rc = %d\n",
2038 handle->lgh_ctxt->loc_obd->obd_name, rc);
2039 class_config_dump_handler(NULL, handle, rec, data);
2043 EXPORT_SYMBOL(class_config_llog_handler);
2045 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
2046 char *name, struct config_llog_instance *cfg)
2048 struct llog_process_cat_data cd = {
2049 .lpcd_first_idx = 0,
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 * Parse config record and output dump in supplied buffer.
2092 * This is separated from class_config_dump_handler() to use
2093 * for ioctl needs as well
2096 * - { index: 4, event: attach, device: lustrewt-clilov, type: lov,
2097 * UUID: lustrewt-clilov_UUID }
2099 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size)
2101 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2103 char *end = buf + size;
2105 struct lcfg_type_data *ldata;
2107 LASSERT(rec->lrh_type == OBD_CFG_REC);
2108 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2112 ldata = lcfg_cmd2data(lcfg->lcfg_command);
2116 if (lcfg->lcfg_command == LCFG_MARKER)
2119 /* form YAML entity */
2120 ptr += snprintf(ptr, end - ptr, "- { index: %u, event: %s",
2121 rec->lrh_index, ldata->ltd_name);
2125 if (lcfg->lcfg_flags) {
2126 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
2131 if (lcfg->lcfg_num) {
2132 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
2137 if (lcfg->lcfg_nid) {
2138 char nidstr[LNET_NIDSTR_SIZE];
2140 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2141 ptr += snprintf(ptr, end - ptr, ", nid: %s(%#llx)",
2142 nidstr, lcfg->lcfg_nid);
2147 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
2148 ptr += snprintf(ptr, end - ptr, ", device: %s",
2149 lustre_cfg_string(lcfg, 0));
2154 if (lcfg->lcfg_command == LCFG_SET_PARAM) {
2156 * set_param -P parameters have param=val here, separate
2157 * them through pointer magic and print them out in
2160 char *cfg_str = lustre_cfg_string(lcfg, 1);
2161 char *tmp = strchr(cfg_str, '=');
2167 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[0]);
2168 len = tmp - cfg_str + 1;
2169 snprintf(ptr, len, "%s", cfg_str);
2172 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[1]);
2173 ptr += snprintf(ptr, end - ptr, "%s", tmp + 1);
2178 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
2179 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0) {
2180 ptr += snprintf(ptr, end - ptr, ", %s: %s",
2181 ldata->ltd_bufs[i - 1],
2182 lustre_cfg_string(lcfg, i));
2189 ptr += snprintf(ptr, end - ptr, " }\n");
2191 /* Return consumed bytes. If the buffer overflowed, zero last byte */
2202 * parse config record and output dump in supplied buffer.
2203 * This is separated from class_config_dump_handler() to use
2204 * for ioctl needs as well
2206 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
2208 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2210 char *end = buf + size;
2215 LASSERT(rec->lrh_type == OBD_CFG_REC);
2216 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2220 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
2221 if (lcfg->lcfg_flags)
2222 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
2226 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
2228 if (lcfg->lcfg_nid) {
2229 char nidstr[LNET_NIDSTR_SIZE];
2231 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2232 ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx) ",
2233 nidstr, lcfg->lcfg_nid);
2236 if (lcfg->lcfg_command == LCFG_MARKER) {
2237 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
2239 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
2240 marker->cm_step, marker->cm_flags,
2241 marker->cm_tgtname, marker->cm_comment);
2245 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
2246 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
2247 lustre_cfg_string(lcfg, i));
2250 ptr += snprintf(ptr, end - ptr, "\n");
2251 /* return consumed bytes */
2256 int class_config_dump_handler(const struct lu_env *env,
2257 struct llog_handle *handle,
2258 struct llog_rec_hdr *rec, void *data)
2265 OBD_ALLOC(outstr, 256);
2269 if (rec->lrh_type == OBD_CFG_REC) {
2270 class_config_parse_rec(rec, outstr, 256);
2271 LCONSOLE(D_WARNING, " %s\n", outstr);
2273 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
2277 OBD_FREE(outstr, 256);
2282 * Call class_cleanup and class_detach.
2283 * "Manual" only in the sense that we're faking lcfg commands.
2285 int class_manual_cleanup(struct obd_device *obd)
2288 struct lustre_cfg *lcfg;
2289 struct lustre_cfg_bufs bufs;
2295 CERROR("empty cleanup\n");
2300 strlcat(flags, "F", sizeof(flags));
2302 strlcat(flags, "A", sizeof(flags));
2304 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
2305 obd->obd_name, flags);
2307 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
2308 lustre_cfg_bufs_set_string(&bufs, 1, flags);
2309 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
2312 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
2314 rc = class_process_config(lcfg);
2316 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
2320 /* the lcfg is almost the same for both ops */
2321 lcfg->lcfg_command = LCFG_DETACH;
2322 rc = class_process_config(lcfg);
2324 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
2326 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
2329 EXPORT_SYMBOL(class_manual_cleanup);
2331 #ifdef HAVE_SERVER_SUPPORT
2333 * nid<->nidstats hash operations
2336 nidstats_hash(struct cfs_hash *hs, const void *key, unsigned int mask)
2338 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
2342 nidstats_key(struct hlist_node *hnode)
2344 struct nid_stat *ns;
2346 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2352 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2354 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
2358 nidstats_object(struct hlist_node *hnode)
2360 return hlist_entry(hnode, struct nid_stat, nid_hash);
2364 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2366 struct nid_stat *ns;
2368 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2373 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2375 struct nid_stat *ns;
2377 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2381 static struct cfs_hash_ops nid_stat_hash_ops = {
2382 .hs_hash = nidstats_hash,
2383 .hs_key = nidstats_key,
2384 .hs_keycmp = nidstats_keycmp,
2385 .hs_object = nidstats_object,
2386 .hs_get = nidstats_get,
2387 .hs_put_locked = nidstats_put_locked,
2392 * client_generation<->export hash operations
2396 gen_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2398 return cfs_hash_djb2_hash(key, sizeof(__u32), mask);
2402 gen_key(struct hlist_node *hnode)
2404 struct obd_export *exp;
2406 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2408 RETURN(&exp->exp_target_data.ted_lcd->lcd_generation);
2412 * NOTE: It is impossible to find an export that is in failed
2413 * state with this function
2416 gen_kepcmp(const void *key, struct hlist_node *hnode)
2418 struct obd_export *exp;
2421 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2423 RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key &&
2428 gen_export_object(struct hlist_node *hnode)
2430 return hlist_entry(hnode, struct obd_export, exp_gen_hash);
2434 gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2436 struct obd_export *exp;
2438 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2439 class_export_get(exp);
2443 gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2445 struct obd_export *exp;
2447 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2448 class_export_put(exp);
2451 static struct cfs_hash_ops gen_hash_ops = {
2452 .hs_hash = gen_hash,
2454 .hs_keycmp = gen_kepcmp,
2455 .hs_object = gen_export_object,
2456 .hs_get = gen_export_get,
2457 .hs_put_locked = gen_export_put_locked,
2460 #endif /* HAVE_SERVER_SUPPORT */