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 .max_size = MAX_OBD_DEVICES,
89 .automatic_shrinking = true,
92 int obd_uuid_add(struct obd_device *obd, struct obd_export *export)
96 class_export_get(export);
98 rc = rhashtable_lookup_insert_fast(&obd->obd_uuid_hash,
99 &export->exp_uuid_hash,
102 class_export_put(export);
104 /* map obscure error codes to -ENOMEM */
114 EXPORT_SYMBOL(obd_uuid_add);
116 void obd_uuid_del(struct obd_device *obd, struct obd_export *export)
121 rc = rhashtable_remove_fast(&obd->obd_uuid_hash,
122 &export->exp_uuid_hash,
125 class_export_put(export);
128 EXPORT_SYMBOL(obd_uuid_del);
130 #ifdef HAVE_SERVER_SUPPORT
131 /* obd_uuid_lookup() is used only server side by target_handle_connect(),
132 * mdt_hsm_agent_send(), and obd_export_evict_by_uuid().
134 struct obd_export *obd_uuid_lookup(struct obd_device *obd,
135 struct obd_uuid *uuid)
137 struct obd_export *export = NULL;
140 export = rhashtable_lookup_fast(&obd->obd_uuid_hash, uuid,
142 if (export && !refcount_inc_not_zero(&export->exp_handle.h_ref))
148 EXPORT_SYMBOL(obd_uuid_lookup);
151 * nid<->export hash operations
153 static u32 nid_keyhash(const void *data, u32 key_len, u32 seed)
155 const struct obd_export *exp = data;
158 if (!exp->exp_connection)
161 key = &exp->exp_connection->c_peer.nid;
162 return jhash2(key, key_len / sizeof(u32), seed);
166 * NOTE: It is impossible to find an export that is in failed
167 * state with this function
170 nid_keycmp(struct rhashtable_compare_arg *arg, const void *obj)
172 const struct lnet_nid *nid = arg->key;
173 const struct obd_export *exp = obj;
175 if (nid_same(&exp->exp_connection->c_peer.nid, nid))
182 nid_export_exit(void *vexport, void *data)
184 struct obd_export *exp = vexport;
186 class_export_put(exp);
189 static const struct rhashtable_params nid_hash_params = {
190 .key_len = sizeof(struct lnet_nid),
191 .head_offset = offsetof(struct obd_export, exp_nid_hash),
192 .obj_hashfn = nid_keyhash,
193 .obj_cmpfn = nid_keycmp,
194 .automatic_shrinking = true,
197 int obd_nid_add(struct obd_device *obd, struct obd_export *exp)
201 if (exp == exp->exp_obd->obd_self_export || exp->exp_hashed)
204 class_export_get(exp);
205 rc = rhltable_insert_key(&obd->obd_nid_hash,
206 &exp->exp_connection->c_peer.nid,
210 class_export_put(exp);
211 /* map obscure error codes to -ENOMEM */
218 EXPORT_SYMBOL(obd_nid_add);
220 void obd_nid_del(struct obd_device *obd, struct obd_export *exp)
224 if (exp == exp->exp_obd->obd_self_export || !exp->exp_hashed)
227 rc = rhltable_remove(&obd->obd_nid_hash, &exp->exp_nid_hash,
230 class_export_put(exp);
234 EXPORT_SYMBOL(obd_nid_del);
236 int obd_nid_export_for_each(struct obd_device *obd, struct lnet_nid *nid,
237 int cb(struct obd_export *exp, void *data),
240 struct rhlist_head *exports, *tmp;
241 struct obd_export *exp;
245 exports = rhltable_lookup(&obd->obd_nid_hash, nid, nid_hash_params);
251 rhl_for_each_entry_rcu(exp, tmp, exports, exp_nid_hash) {
252 if (!exp->exp_failed && cb(exp, data))
260 EXPORT_SYMBOL(obd_nid_export_for_each);
261 #endif /* HAVE_SERVER_SUPPORT */
263 /*********** string parsing utils *********/
265 /* returns 0 if we find this key in the buffer, else 1 */
266 int class_find_param(char *buf, char *key, char **valp)
273 ptr = strstr(buf, key);
278 *valp = ptr + strlen(key);
282 EXPORT_SYMBOL(class_find_param);
285 * Check whether the proc parameter \a param is an old parameter or not from
286 * the array \a ptr which contains the mapping from old parameters to new ones.
287 * If it's an old one, then return the pointer to the cfg_interop_param struc-
288 * ture which contains both the old and new parameters.
290 * \param param proc parameter
291 * \param ptr an array which contains the mapping from
292 * old parameters to new ones
294 * \retval valid-pointer pointer to the cfg_interop_param structure
295 * which contains the old and new parameters
296 * \retval NULL \a param or \a ptr is NULL,
297 * or \a param is not an old parameter
299 struct cfg_interop_param *class_find_old_param(const char *param,
300 struct cfg_interop_param *ptr)
308 value = strchr(param, '=');
310 name_len = value - param;
312 name_len = strlen(param);
314 while (ptr->old_param) {
315 if (strncmp(param, ptr->old_param, name_len) == 0 &&
316 name_len == strlen(ptr->old_param))
323 EXPORT_SYMBOL(class_find_old_param);
326 * Finds a parameter in \a params and copies it to \a copy.
328 * Leading spaces are skipped. Next space or end of string is the
329 * parameter terminator with the exception that spaces inside single or double
330 * quotes get included into a parameter. The parameter is copied into \a copy
331 * which has to be allocated big enough by a caller, quotes are stripped in
332 * the copy and the copy is terminated by 0.
334 * On return \a params is set to next parameter or to NULL if last
335 * parameter is returned.
337 * \retval 0 if parameter is returned in \a copy
338 * \retval 1 otherwise
339 * \retval -EINVAL if unbalanced quota is found
341 int class_get_next_param(char **params, char *copy)
356 q1 = strpbrk(str, " '\"");
359 memcpy(copy, str, len);
366 memcpy(copy, str, len);
372 memcpy(copy, str, len);
375 /* search for the matching closing quote */
377 q2 = strchr(str, *q1);
379 CERROR("Unbalanced quota in parameters: \"%s\"\n",
384 memcpy(copy, str, len);
390 EXPORT_SYMBOL(class_get_next_param);
393 * returns 0 if this is the first key in the buffer, else 1.
394 * valp points to first char after key.
396 int class_match_param(char *buf, const char *key, char **valp)
401 if (memcmp(buf, key, strlen(key)) != 0)
405 *valp = buf + strlen(key);
409 EXPORT_SYMBOL(class_match_param);
411 static int parse_nid(char *buf, void *value, int quiet)
413 lnet_nid_t *nid = (lnet_nid_t *)value;
415 *nid = libcfs_str2nid(buf);
416 if (*nid != LNET_NID_ANY)
420 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
424 static int parse_net(char *buf, void *value)
426 __u32 *net = (__u32 *)value;
428 *net = libcfs_str2net(buf);
429 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
442 * endh is set to next separator
444 static int class_parse_value(char *buf, int opc, void *value, char **endh,
453 while (*buf == ',' || *buf == ':')
455 if (*buf == ' ' || *buf == '/' || *buf == '\0')
458 /* NID separators or end of NIDs */
459 endp = strpbrk(buf, ",: /");
461 endp = buf + strlen(buf);
468 case CLASS_PARSE_NID:
469 rc = parse_nid(buf, value, quiet);
471 case CLASS_PARSE_NET:
472 rc = parse_net(buf, value);
483 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
485 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
487 EXPORT_SYMBOL(class_parse_nid);
489 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
491 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
493 EXPORT_SYMBOL(class_parse_nid_quiet);
495 int class_parse_net(char *buf, __u32 *net, char **endh)
497 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
501 * 1 param contains key and match
502 * 0 param contains key and not match
503 * -1 param does not contain key
505 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
510 while (class_find_param(buf, key, &buf) == 0) {
512 * please restrict to the NIDs pertaining to
515 while (class_parse_nid(buf, &tmp, &buf) == 0) {
524 int class_match_net(char *buf, char *key, __u32 net)
529 while (class_find_param(buf, key, &buf) == 0) {
531 * please restrict to the NIDs pertaining to
532 * the specified networks
534 while (class_parse_net(buf, &tmp, &buf) == 0) {
543 char *lustre_cfg_string(struct lustre_cfg *lcfg, u32 index)
547 if (!lcfg->lcfg_buflens[index])
550 s = lustre_cfg_buf(lcfg, index);
555 * make sure it's NULL terminated, even if this kills a char
556 * of data. Try to use the padding first though.
558 if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
559 size_t last = ALIGN(lcfg->lcfg_buflens[index], 8) - 1;
562 /* Use the smaller value */
563 if (last > lcfg->lcfg_buflens[index])
564 last = lcfg->lcfg_buflens[index];
569 CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
575 EXPORT_SYMBOL(lustre_cfg_string);
577 /********************** class fns **********************/
580 * Create a new OBD device and set the type, name and uuid. If successful,
581 * the new device can be accessed by either name or uuid.
583 int class_attach(struct lustre_cfg *lcfg)
585 struct obd_export *exp;
586 struct obd_device *obd = NULL;
587 char *typename, *name, *uuid;
592 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
593 CERROR("No type passed!\n");
596 typename = lustre_cfg_string(lcfg, 1);
598 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
599 CERROR("No name passed!\n");
602 name = lustre_cfg_string(lcfg, 0);
603 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
604 CERROR("No UUID passed!\n");
608 uuid = lustre_cfg_string(lcfg, 2);
610 if (len >= sizeof(obd->obd_uuid)) {
611 CERROR("%s: uuid must be < %d bytes long\n",
612 name, (int)sizeof(obd->obd_uuid));
616 obd = class_newdev(typename, name, uuid);
617 if (IS_ERR(obd)) { /* Already exists or out of obds */
619 CERROR("Cannot create device %s of type %s : %d\n",
623 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
624 "obd %p obd_magic %08X != %08X\n",
625 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
626 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
627 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
629 exp = class_new_export_self(obd, &obd->obd_uuid);
636 obd->obd_self_export = exp;
637 list_del_init(&exp->exp_obd_chain_timed);
638 class_export_put(exp);
640 rc = class_register_device(obd);
642 class_decref(obd, "newdev", obd);
646 obd->obd_attached = 1;
647 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
648 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
652 EXPORT_SYMBOL(class_attach);
655 * Create hashes, self-export, and call type-specific setup.
656 * Setup is effectively the "start this obd" call.
658 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
664 LASSERT(obd != NULL);
665 LASSERTF(obd == class_num2obd(obd->obd_minor),
666 "obd %p != obd_devs[%d] %p\n",
667 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
668 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
669 "obd %p obd_magic %08x != %08x\n",
670 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
672 /* have we attached a type to this device? */
673 if (!obd->obd_attached) {
674 CERROR("Device %d not attached\n", obd->obd_minor);
678 if (obd->obd_set_up) {
679 CERROR("Device %d already setup (type %s)\n",
680 obd->obd_minor, obd->obd_type->typ_name);
684 /* is someone else setting us up right now? (attach inits spinlock) */
685 spin_lock(&obd->obd_dev_lock);
686 if (obd->obd_starting) {
687 spin_unlock(&obd->obd_dev_lock);
688 CERROR("Device %d setup in progress (type %s)\n",
689 obd->obd_minor, obd->obd_type->typ_name);
693 * just leave this on forever. I can't use obd_set_up here because
694 * other fns check that status, and we're not actually set up yet.
696 obd->obd_starting = 1;
697 obd->obd_nid_stats_hash = NULL;
698 obd->obd_gen_hash = NULL;
699 spin_unlock(&obd->obd_dev_lock);
701 /* create an uuid-export lustre hash */
702 err = rhashtable_init(&obd->obd_uuid_hash, &uuid_hash_params);
704 GOTO(err_starting, err);
706 #ifdef HAVE_SERVER_SUPPORT
707 /* create a nid-export lustre hash */
708 err = rhltable_init(&obd->obd_nid_hash, &nid_hash_params);
710 GOTO(err_uuid_hash, err = -ENOMEM);
712 /* create a nid-stats lustre hash */
713 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
714 HASH_NID_STATS_CUR_BITS,
715 HASH_NID_STATS_MAX_BITS,
716 HASH_NID_STATS_BKT_BITS, 0,
721 if (!obd->obd_nid_stats_hash)
722 GOTO(err_nid_hash, err = -ENOMEM);
724 /* create a client_generation-export lustre hash */
725 obd->obd_gen_hash = cfs_hash_create("UUID_HASH",
728 HASH_GEN_BKT_BITS, 0,
731 &gen_hash_ops, CFS_HASH_DEFAULT);
732 if (!obd->obd_gen_hash)
733 GOTO(err_nid_stats_hash, err = -ENOMEM);
734 #endif /* HAVE_SERVER_SUPPORT */
736 err = obd_setup(obd, lcfg);
738 #ifdef HAVE_SERVER_SUPPORT
739 GOTO(err_gen_hash, err);
741 GOTO(err_uuid_hash, err);
742 #endif /* ! HAVE_SERVER_SUPPORT */
746 spin_lock(&obd->obd_dev_lock);
747 /* cleanup drops this */
748 class_incref(obd, "setup", obd);
749 spin_unlock(&obd->obd_dev_lock);
751 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
752 obd->obd_name, obd->obd_uuid.uuid);
756 #ifdef HAVE_SERVER_SUPPORT
758 if (obd->obd_gen_hash) {
759 cfs_hash_putref(obd->obd_gen_hash);
760 obd->obd_gen_hash = NULL;
763 if (obd->obd_nid_stats_hash) {
764 cfs_hash_putref(obd->obd_nid_stats_hash);
765 obd->obd_nid_stats_hash = NULL;
768 rhltable_destroy(&obd->obd_nid_hash);
769 #endif /* HAVE_SERVER_SUPPORT */
771 rhashtable_destroy(&obd->obd_uuid_hash);
773 obd->obd_starting = 0;
774 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
777 EXPORT_SYMBOL(class_setup);
780 * We have finished using this OBD and are ready to destroy it.
781 * There can be no more references to this obd.
783 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
787 if (obd->obd_set_up) {
788 CERROR("OBD device %d still set up\n", obd->obd_minor);
792 spin_lock(&obd->obd_dev_lock);
793 if (!obd->obd_attached) {
794 spin_unlock(&obd->obd_dev_lock);
795 CERROR("OBD device %d not attached\n", obd->obd_minor);
798 obd->obd_attached = 0;
799 spin_unlock(&obd->obd_dev_lock);
801 /* cleanup in progress. we don't like to find this device after now */
802 class_unregister_device(obd);
804 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
805 obd->obd_name, obd->obd_uuid.uuid);
807 class_decref(obd, "newdev", obd);
811 EXPORT_SYMBOL(class_detach);
814 * Start shutting down the OBD. There may be in-progess ops when
815 * this is called. We tell them to start shutting down with a call
816 * to class_disconnect_exports().
818 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
824 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
826 if (!obd->obd_set_up) {
827 CERROR("Device %d not setup\n", obd->obd_minor);
831 spin_lock(&obd->obd_dev_lock);
832 if (obd->obd_stopping) {
833 spin_unlock(&obd->obd_dev_lock);
834 CERROR("OBD %d already stopping\n", obd->obd_minor);
837 /* Leave this on forever */
838 obd->obd_stopping = 1;
839 spin_unlock(&obd->obd_dev_lock);
841 /* wait for already-arrived-connections to finish. */
842 while (obd->obd_conn_inprogress > 0)
846 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
847 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
853 LCONSOLE_WARN("Failing over %s\n",
855 spin_lock(&obd->obd_dev_lock);
857 #ifdef HAVE_SERVER_SUPPORT
858 obd->obd_no_transno = 1;
860 obd->obd_no_recov = 1;
861 spin_unlock(&obd->obd_dev_lock);
862 if (OBP(obd, iocontrol)) {
863 obd_iocontrol(OBD_IOC_SYNC,
864 obd->obd_self_export,
869 CERROR("Unrecognised flag '%c'\n", *flag);
873 LASSERT(obd->obd_self_export);
875 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d/%d\n",
876 obd->obd_name, obd->obd_num_exports,
877 atomic_read(&obd->obd_refcount) - 2);
878 dump_exports(obd, 0, D_HA);
879 class_disconnect_exports(obd);
881 /* Precleanup, we must make sure all exports get destroyed. */
882 err = obd_precleanup(obd);
884 CERROR("Precleanup %s returned %d\n",
887 /* destroy an uuid-export hash body */
888 rhashtable_free_and_destroy(&obd->obd_uuid_hash, obd_export_exit,
890 #ifdef HAVE_SERVER_SUPPORT
891 /* destroy a nid-export hash body */
892 rhltable_free_and_destroy(&obd->obd_nid_hash, nid_export_exit, NULL);
894 /* destroy a nid-stats hash body */
895 if (obd->obd_nid_stats_hash) {
896 cfs_hash_putref(obd->obd_nid_stats_hash);
897 obd->obd_nid_stats_hash = NULL;
900 /* destroy a client_generation-export hash body */
901 if (obd->obd_gen_hash) {
902 cfs_hash_putref(obd->obd_gen_hash);
903 obd->obd_gen_hash = NULL;
905 #endif /* HAVE_SERVER_SUPPORT */
906 class_decref(obd, "setup", obd);
912 struct obd_device *class_incref(struct obd_device *obd,
916 lu_ref_add_atomic(&obd->obd_reference, scope, source);
917 atomic_inc(&obd->obd_refcount);
918 CDEBUG(D_INFO, "incref %s (%p) now %d - %s\n", obd->obd_name, obd,
919 atomic_read(&obd->obd_refcount), scope);
923 EXPORT_SYMBOL(class_incref);
925 void class_decref(struct obd_device *obd, const char *scope, const void *source)
929 CDEBUG(D_INFO, "Decref %s (%p) now %d - %s\n", obd->obd_name, obd,
930 atomic_read(&obd->obd_refcount), scope);
932 LASSERT(obd->obd_num_exports >= 0);
933 last = atomic_dec_and_test(&obd->obd_refcount);
934 lu_ref_del(&obd->obd_reference, scope, source);
937 struct obd_export *exp;
939 LASSERT(!obd->obd_attached);
941 * All exports have been destroyed; there should
942 * be no more in-progress ops by this point.
944 exp = obd->obd_self_export;
947 exp->exp_flags |= exp_flags_from_obd(obd);
948 class_unlink_export(exp);
952 EXPORT_SYMBOL(class_decref);
955 * Add a failover NID location.
956 * Client OBD types contact server OBD types using this NID list.
958 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
960 struct obd_import *imp;
961 struct obd_uuid uuid;
966 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
967 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
968 CERROR("invalid conn_uuid\n");
971 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
972 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
973 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
974 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
975 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
976 CERROR("can't add connection on non-client dev\n");
980 imp = obd->u.cli.cl_import;
982 CERROR("try to add conn on immature client dev\n");
986 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
987 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
992 /** Remove a failover NID location. */
993 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
995 struct obd_import *imp;
996 struct obd_uuid uuid;
1001 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1002 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
1003 CERROR("invalid conn_uuid\n");
1006 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
1007 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
1008 CERROR("can't del connection on non-client dev\n");
1012 imp = obd->u.cli.cl_import;
1014 CERROR("try to del conn on immature client dev\n");
1018 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
1019 rc = obd_del_conn(imp, &uuid);
1024 static LIST_HEAD(lustre_profile_list);
1025 static DEFINE_SPINLOCK(lustre_profile_list_lock);
1027 struct lustre_profile *class_get_profile(const char *prof)
1029 struct lustre_profile *lprof;
1032 spin_lock(&lustre_profile_list_lock);
1033 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
1034 if (!strcmp(lprof->lp_profile, prof)) {
1036 spin_unlock(&lustre_profile_list_lock);
1040 spin_unlock(&lustre_profile_list_lock);
1043 EXPORT_SYMBOL(class_get_profile);
1046 * Create a named "profile".
1047 * This defines the MDC and OSC names to use for a client.
1048 * This also is used to define the LOV to be used by a MDT.
1050 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
1051 int mdclen, char *mdc)
1053 struct lustre_profile *lprof;
1058 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
1060 OBD_ALLOC(lprof, sizeof(*lprof));
1063 INIT_LIST_HEAD(&lprof->lp_list);
1065 LASSERT(proflen == (strlen(prof) + 1));
1066 OBD_ALLOC(lprof->lp_profile, proflen);
1067 if (!lprof->lp_profile)
1068 GOTO(out, err = -ENOMEM);
1069 memcpy(lprof->lp_profile, prof, proflen);
1071 LASSERT(osclen == (strlen(osc) + 1));
1072 OBD_ALLOC(lprof->lp_dt, osclen);
1074 GOTO(out, err = -ENOMEM);
1075 memcpy(lprof->lp_dt, osc, osclen);
1078 LASSERT(mdclen == (strlen(mdc) + 1));
1079 OBD_ALLOC(lprof->lp_md, mdclen);
1081 GOTO(out, err = -ENOMEM);
1082 memcpy(lprof->lp_md, mdc, mdclen);
1085 spin_lock(&lustre_profile_list_lock);
1087 lprof->lp_list_deleted = false;
1089 list_add(&lprof->lp_list, &lustre_profile_list);
1090 spin_unlock(&lustre_profile_list_lock);
1095 OBD_FREE(lprof->lp_md, mdclen);
1097 OBD_FREE(lprof->lp_dt, osclen);
1098 if (lprof->lp_profile)
1099 OBD_FREE(lprof->lp_profile, proflen);
1100 OBD_FREE(lprof, sizeof(*lprof));
1104 void class_del_profile(const char *prof)
1106 struct lustre_profile *lprof;
1110 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
1112 lprof = class_get_profile(prof);
1114 spin_lock(&lustre_profile_list_lock);
1115 /* because get profile increments the ref counter */
1117 list_del(&lprof->lp_list);
1118 lprof->lp_list_deleted = true;
1119 spin_unlock(&lustre_profile_list_lock);
1121 class_put_profile(lprof);
1125 EXPORT_SYMBOL(class_del_profile);
1127 void class_put_profile(struct lustre_profile *lprof)
1129 spin_lock(&lustre_profile_list_lock);
1130 if ((--lprof->lp_refs) > 0) {
1131 LASSERT(lprof->lp_refs > 0);
1132 spin_unlock(&lustre_profile_list_lock);
1135 spin_unlock(&lustre_profile_list_lock);
1137 /* confirm not a negative number */
1138 LASSERT(lprof->lp_refs == 0);
1141 * At least one class_del_profile/profiles must be called
1142 * on the target profile or lustre_profile_list will corrupt
1144 LASSERT(lprof->lp_list_deleted);
1145 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
1146 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
1148 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
1149 OBD_FREE(lprof, sizeof(*lprof));
1151 EXPORT_SYMBOL(class_put_profile);
1154 void class_del_profiles(void)
1156 struct lustre_profile *lprof, *n;
1159 spin_lock(&lustre_profile_list_lock);
1160 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
1161 list_del(&lprof->lp_list);
1162 lprof->lp_list_deleted = true;
1163 spin_unlock(&lustre_profile_list_lock);
1165 class_put_profile(lprof);
1167 spin_lock(&lustre_profile_list_lock);
1169 spin_unlock(&lustre_profile_list_lock);
1172 EXPORT_SYMBOL(class_del_profiles);
1175 * We can't call lquota_process_config directly because
1176 * it lives in a module that must be loaded after this one.
1178 #ifdef HAVE_SERVER_SUPPORT
1179 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
1180 #endif /* HAVE_SERVER_SUPPORT */
1183 * Rename the proc parameter in \a cfg with a new name \a new_name.
1185 * \param cfg config structure which contains the proc parameter
1186 * \param new_name new name of the proc parameter
1188 * \retval valid-pointer pointer to the newly-allocated config structure
1189 * which contains the renamed proc parameter
1190 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
1191 * not contain a proc parameter
1192 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
1194 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
1195 const char *new_name)
1197 struct lustre_cfg_bufs *bufs = NULL;
1198 struct lustre_cfg *new_cfg = NULL;
1200 char *new_param = NULL;
1207 if (!cfg || !new_name)
1208 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1210 param = lustre_cfg_string(cfg, 1);
1212 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1214 value = strchr(param, '=');
1216 name_len = value - param;
1218 name_len = strlen(param);
1220 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1222 OBD_ALLOC(new_param, new_len);
1224 GOTO(out_nocfg, new_cfg = ERR_PTR(-ENOMEM));
1226 strlcpy(new_param, new_name, new_len);
1228 strcat(new_param, value);
1230 OBD_ALLOC_PTR(bufs);
1232 GOTO(out_free_param, new_cfg = ERR_PTR(-ENOMEM));
1234 lustre_cfg_bufs_reset(bufs, NULL);
1235 lustre_cfg_bufs_init(bufs, cfg);
1236 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1238 OBD_ALLOC(new_cfg, lustre_cfg_len(bufs->lcfg_bufcount,
1239 bufs->lcfg_buflen));
1241 GOTO(out_free_buf, new_cfg = ERR_PTR(-ENOMEM));
1243 lustre_cfg_init(new_cfg, cfg->lcfg_command, bufs);
1245 new_cfg->lcfg_num = cfg->lcfg_num;
1246 new_cfg->lcfg_flags = cfg->lcfg_flags;
1247 new_cfg->lcfg_nid = cfg->lcfg_nid;
1248 new_cfg->lcfg_nal = cfg->lcfg_nal;
1252 OBD_FREE(new_param, new_len);
1256 EXPORT_SYMBOL(lustre_cfg_rename);
1258 static ssize_t process_param2_config(struct lustre_cfg *lcfg)
1260 char *param = lustre_cfg_string(lcfg, 1);
1261 char *upcall = lustre_cfg_string(lcfg, 2);
1262 struct kobject *kobj = NULL;
1263 const char *subsys = param;
1264 char *newparam = NULL;
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 /* root_squash and nosquash_nids settings must be applied to
1321 * global subsystem (*.) so that it is taken into account by
1322 * both client and server sides. So do the equivalent of a
1323 * 's / mdt. / *. /'.
1325 if ((strstr(param, PARAM_NOSQUASHNIDS) ||
1326 strstr(param, PARAM_ROOTSQUASH)) &&
1327 (param[0] != '*' || param[1] != '.')) {
1328 newparam = kmalloc(strlen(param) + 1, GFP_NOFS);
1332 snprintf(newparam, strlen(param) + 1, "*%s", param + len);
1333 argv[2] = (char *)newparam;
1336 start = ktime_get();
1337 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1341 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1342 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1343 (long)ktime_us_delta(end, start));
1345 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1346 argv[0], argv[1], argv[2],
1347 (long)ktime_us_delta(end, start));
1355 #ifdef HAVE_SERVER_SUPPORT
1356 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1358 quota_process_config = qpc;
1360 EXPORT_SYMBOL(lustre_register_quota_process_config);
1361 #endif /* HAVE_SERVER_SUPPORT */
1364 * Process configuration commands given in lustre_cfg form.
1365 * These may come from direct calls (e.g. class_manual_cleanup)
1366 * or processing the config llog, or ioctl from lctl.
1368 int class_process_config(struct lustre_cfg *lcfg)
1370 struct obd_device *obd;
1373 LASSERT(lcfg && !IS_ERR(lcfg));
1374 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1376 /* Commands that don't need a device */
1377 switch (lcfg->lcfg_command) {
1379 err = class_attach(lcfg);
1382 case LCFG_ADD_UUID: {
1384 "adding mapping from uuid %s to nid %#llx (%s)\n",
1385 lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid,
1386 libcfs_nid2str(lcfg->lcfg_nid));
1388 err = class_add_uuid(lustre_cfg_string(lcfg, 1),
1392 case LCFG_DEL_UUID: {
1393 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1394 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) ==
1395 0) ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1397 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1400 case LCFG_MOUNTOPT: {
1401 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1402 lustre_cfg_string(lcfg, 1),
1403 lustre_cfg_string(lcfg, 2),
1404 lustre_cfg_string(lcfg, 3));
1406 * set these mount options somewhere, so ll_fill_super
1409 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1410 lustre_cfg_string(lcfg, 1),
1411 LUSTRE_CFG_BUFLEN(lcfg, 2),
1412 lustre_cfg_string(lcfg, 2),
1413 LUSTRE_CFG_BUFLEN(lcfg, 3),
1414 lustre_cfg_string(lcfg, 3));
1417 case LCFG_DEL_MOUNTOPT: {
1418 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1419 lustre_cfg_string(lcfg, 1));
1420 class_del_profile(lustre_cfg_string(lcfg, 1));
1423 case LCFG_SET_TIMEOUT: {
1424 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1425 obd_timeout, lcfg->lcfg_num);
1426 obd_timeout = max(lcfg->lcfg_num, 1U);
1427 obd_timeout_set = 1;
1430 case LCFG_SET_LDLM_TIMEOUT: {
1431 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1432 ldlm_timeout, lcfg->lcfg_num);
1433 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1434 if (ldlm_timeout >= obd_timeout)
1435 ldlm_timeout = max(obd_timeout / 3, 1U);
1436 ldlm_timeout_set = 1;
1439 case LCFG_SET_UPCALL: {
1440 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1441 /* COMPAT_146 Don't fail on old configs */
1445 struct cfg_marker *marker;
1447 marker = lustre_cfg_buf(lcfg, 1);
1448 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1449 marker->cm_flags, marker->cm_tgtname,
1450 marker->cm_comment);
1456 /* llite has no OBD */
1457 if (class_match_param(lustre_cfg_string(lcfg, 1),
1458 PARAM_LLITE, NULL) == 0) {
1459 struct lustre_sb_info *lsi;
1464 * The instance name contains the sb:
1465 * lustre-client-aacfe000
1467 tmp = strrchr(lustre_cfg_string(lcfg, 0), '-');
1468 if (!tmp || !*(++tmp))
1469 GOTO(out, err = -EINVAL);
1471 if (sscanf(tmp, "%lx", &addr) != 1)
1472 GOTO(out, err = -EINVAL);
1474 lsi = s2lsi((struct super_block *)addr);
1475 /* This better be a real Lustre superblock! */
1476 LASSERT(lsi->lsi_lmd->lmd_magic == LMD_MAGIC);
1478 count = class_modify_config(lcfg, PARAM_LLITE,
1480 err = count < 0 ? count : 0;
1482 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1483 PARAM_SYS, &tmp) == 0)) {
1484 /* Global param settings */
1485 err = class_set_global(tmp);
1487 * Client or server should not fail to mount if
1488 * it hits an unknown configuration parameter.
1491 CWARN("Ignoring unknown param %s\n", tmp);
1494 #ifdef HAVE_SERVER_SUPPORT
1495 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1496 PARAM_QUOTA, &tmp) == 0) &&
1497 quota_process_config) {
1498 err = (*quota_process_config)(lcfg);
1500 #endif /* HAVE_SERVER_SUPPORT */
1505 case LCFG_SET_PARAM: {
1506 err = process_param2_config(lcfg);
1510 /* Commands that require a device */
1511 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1513 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1514 CERROR("this lcfg command requires a device name\n");
1516 CERROR("no device for: %s\n",
1517 lustre_cfg_string(lcfg, 0));
1519 GOTO(out, err = -EINVAL);
1521 switch(lcfg->lcfg_command) {
1523 err = class_setup(obd, lcfg);
1527 err = class_detach(obd, lcfg);
1530 case LCFG_CLEANUP: {
1531 err = class_cleanup(obd, lcfg);
1534 case LCFG_ADD_CONN: {
1535 err = class_add_conn(obd, lcfg);
1538 case LCFG_DEL_CONN: {
1539 err = class_del_conn(obd, lcfg);
1542 case LCFG_POOL_NEW: {
1543 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1546 case LCFG_POOL_ADD: {
1547 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1548 lustre_cfg_string(lcfg, 3));
1551 case LCFG_POOL_REM: {
1552 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1553 lustre_cfg_string(lcfg, 3));
1556 case LCFG_POOL_DEL: {
1557 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1561 * Process config log ADD_MDC record twice to add MDC also to LOV
1564 * add 0:lustre-clilmv 1:lustre-MDT0000_UUID 2:0 3:1
1565 * 4:lustre-MDT0000-mdc_UUID
1567 case LCFG_ADD_MDC: {
1568 struct obd_device *lov_obd;
1571 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1575 /* make sure this is client LMV log entry */
1576 clilmv = strstr(lustre_cfg_string(lcfg, 0), "clilmv");
1581 * replace 'lmv' with 'lov' name to address LOV device and
1582 * process llog record to add MDC there.
1585 lov_obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1587 err = obd_process_config(lov_obd, sizeof(*lcfg), lcfg);
1590 CERROR("%s: Cannot find LOV by %s name, rc = %d\n",
1591 obd->obd_name, lustre_cfg_string(lcfg, 0), err);
1593 /* restore 'lmv' name */
1598 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1604 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1605 CWARN("Ignoring error %d on optional command %#x\n", err,
1606 lcfg->lcfg_command);
1611 EXPORT_SYMBOL(class_process_config);
1613 ssize_t class_modify_config(struct lustre_cfg *lcfg, const char *prefix,
1614 struct kobject *kobj)
1616 struct kobj_type *typ;
1620 if (lcfg->lcfg_command != LCFG_PARAM) {
1621 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1625 typ = get_ktype(kobj);
1626 if (!typ || !typ->default_attrs)
1629 print_lustre_cfg(lcfg);
1632 * e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1633 * or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1634 * or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36
1636 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1637 struct attribute *attr;
1643 key = lustre_cfg_buf(lcfg, i);
1644 /* Strip off prefix */
1645 if (class_match_param(key, prefix, &key))
1647 * If the prefix doesn't match, return error so we
1648 * can pass it down the stack
1652 value = strchr(key, '=');
1653 if (!value || *(value + 1) == 0) {
1654 CERROR("%s: can't parse param '%s' (missing '=')\n",
1655 lustre_cfg_string(lcfg, 0),
1656 lustre_cfg_string(lcfg, i));
1657 /* continue parsing other params */
1660 keylen = value - key;
1664 for (j = 0; typ->default_attrs[j]; j++) {
1665 if (!strncmp(typ->default_attrs[j]->name, key,
1667 attr = typ->default_attrs[j];
1673 char *envp[4], *param, *path;
1675 path = kobject_get_path(kobj, GFP_KERNEL);
1679 /* convert sysfs path to uevent format */
1681 while ((param = strchr(param, '/')) != NULL)
1684 param = strstr(path, "fs.lustre.") + 10;
1686 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s.%.*s",
1687 param, (int) keylen, key);
1688 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1689 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1690 ktime_get_real_seconds());
1693 if (kobject_uevent_env(kobj, KOBJ_CHANGE, envp)) {
1694 CERROR("%s: failed to send uevent %s\n",
1695 kobject_name(kobj), key);
1698 for (i = 0; i < ARRAY_SIZE(envp); i++)
1702 count += lustre_attr_store(kobj, attr, value,
1708 EXPORT_SYMBOL(class_modify_config);
1711 * Supplemental functions for config logs, it allocates lustre_cfg
1712 * buffers plus initialized llog record header at the beginning.
1714 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1716 struct llog_cfg_rec *lcr;
1721 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1722 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1723 sizeof(struct llog_rec_tail);
1725 OBD_ALLOC(lcr, reclen);
1729 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1731 lcr->lcr_hdr.lrh_len = reclen;
1732 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1736 EXPORT_SYMBOL(lustre_cfg_rec_new);
1738 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1741 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1744 EXPORT_SYMBOL(lustre_cfg_rec_free);
1747 * Parse a configuration llog, doing various manipulations on them
1748 * for various reasons, (modifications for compatibility, skip obsolete
1749 * records, change uuids, etc), then class_process_config() resulting
1752 int class_config_llog_handler(const struct lu_env *env,
1753 struct llog_handle *handle,
1754 struct llog_rec_hdr *rec, void *data)
1756 struct config_llog_instance *cfg = data;
1757 int cfg_len = rec->lrh_len;
1758 char *cfg_buf = (char *) (rec + 1);
1762 /* class_config_dump_handler(handle, rec, data); */
1764 switch (rec->lrh_type) {
1766 struct lustre_cfg *lcfg, *lcfg_new;
1767 struct lustre_cfg_bufs bufs;
1768 char *inst_name = NULL;
1772 lcfg = (struct lustre_cfg *)cfg_buf;
1773 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1774 lustre_swab_lustre_cfg(lcfg);
1778 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1782 /* Figure out config state info */
1783 if (lcfg->lcfg_command == LCFG_MARKER) {
1784 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1785 lustre_swab_cfg_marker(marker, swab,
1786 LUSTRE_CFG_BUFLEN(lcfg, 1));
1787 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1788 cfg->cfg_flags, marker->cm_flags);
1789 if (marker->cm_flags & CM_START) {
1790 /* all previous flags off */
1791 cfg->cfg_flags = CFG_F_MARKER;
1792 server_name2index(marker->cm_tgtname,
1793 &cfg->cfg_lwp_idx, NULL);
1794 if (marker->cm_flags & CM_SKIP) {
1795 cfg->cfg_flags |= CFG_F_SKIP;
1796 CDEBUG(D_CONFIG, "SKIP #%d\n",
1798 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1800 lustre_check_exclusion(cfg->cfg_sb,
1801 marker->cm_tgtname))) {
1802 cfg->cfg_flags |= CFG_F_EXCLUDE;
1803 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1806 } else if (marker->cm_flags & CM_END) {
1811 * A config command without a start marker before it is
1814 if (!(cfg->cfg_flags & CFG_F_MARKER) &&
1815 (lcfg->lcfg_command != LCFG_MARKER)) {
1816 CWARN("Skip config outside markers, (inst: %016lx, uuid: %s, flags: %#x)\n",
1818 cfg->cfg_uuid.uuid, cfg->cfg_flags);
1819 cfg->cfg_flags |= CFG_F_SKIP;
1821 if (cfg->cfg_flags & CFG_F_SKIP) {
1822 CDEBUG(D_CONFIG, "skipping %#x\n",
1825 /* No processing! */
1830 * For interoperability between 1.8 and 2.0,
1831 * rename "mds" OBD device type to "mdt".
1834 char *typename = lustre_cfg_string(lcfg, 1);
1835 char *index = lustre_cfg_string(lcfg, 2);
1837 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1838 strcmp(typename, "mds") == 0)) {
1839 CWARN("For 1.8 interoperability, rename obd "
1840 "type from mds to mdt\n");
1843 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1844 strcmp(index, "type") == 0)) {
1845 CDEBUG(D_INFO, "For 1.8 interoperability, "
1846 "set this index to '0'\n");
1852 #ifdef HAVE_SERVER_SUPPORT
1853 /* newer MDS replaces LOV/OSC with LOD/OSP */
1854 if ((lcfg->lcfg_command == LCFG_ATTACH ||
1855 lcfg->lcfg_command == LCFG_SET_PARAM ||
1856 lcfg->lcfg_command == LCFG_PARAM) &&
1857 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1858 char *typename = lustre_cfg_string(lcfg, 1);
1861 strcmp(typename, LUSTRE_LOV_NAME) == 0) {
1863 "For 2.x interoperability, rename obd "
1864 "type from lov to lod (%s)\n",
1865 s2lsi(cfg->cfg_sb)->lsi_svname);
1866 strcpy(typename, LUSTRE_LOD_NAME);
1869 strcmp(typename, LUSTRE_OSC_NAME) == 0) {
1871 "For 2.x interoperability, rename obd "
1872 "type from osc to osp (%s)\n",
1873 s2lsi(cfg->cfg_sb)->lsi_svname);
1874 strcpy(typename, LUSTRE_OSP_NAME);
1877 #endif /* HAVE_SERVER_SUPPORT */
1879 if (cfg->cfg_flags & CFG_F_EXCLUDE) {
1880 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1881 lcfg->lcfg_command);
1882 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1883 /* Add inactive instead */
1884 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1887 lustre_cfg_bufs_reset(&bufs, NULL);
1888 lustre_cfg_bufs_init(&bufs, lcfg);
1890 if (cfg->cfg_instance &&
1891 lcfg->lcfg_command != LCFG_SPTLRPC_CONF &&
1892 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1893 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1894 LUSTRE_MAXINSTANCE + 4;
1895 OBD_ALLOC(inst_name, inst_len);
1897 GOTO(out, rc = -ENOMEM);
1898 snprintf(inst_name, inst_len, "%s-%016lx",
1899 lustre_cfg_string(lcfg, 0),
1901 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1902 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1903 lcfg->lcfg_command, inst_name);
1906 /* override llog UUID for clients, to insure they are unique */
1907 if (cfg->cfg_instance && lcfg->lcfg_command == LCFG_ATTACH)
1908 lustre_cfg_bufs_set_string(&bufs, 2,
1909 cfg->cfg_uuid.uuid);
1911 * sptlrpc config record, we expect 2 data segments:
1912 * [0]: fs_name/target_name,
1914 * moving them to index [1] and [2], and insert MGC's
1915 * obdname at index [0].
1917 if (cfg->cfg_instance &&
1918 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1919 /* After ASLR changes cfg_instance this needs fixing */
1920 /* "obd" is set in config_log_find_or_add() */
1921 struct obd_device *obd = (void *)cfg->cfg_instance;
1923 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1924 bufs.lcfg_buflen[1]);
1925 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1926 bufs.lcfg_buflen[0]);
1927 lustre_cfg_bufs_set_string(&bufs, 0,
1932 * Add net info to setup command
1933 * if given on command line.
1934 * So config log will be:
1938 * [3]: inactive-on-startup
1939 * [4]: restrictive net
1941 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1942 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1943 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1944 char *nidnet = lsi->lsi_lmd->lmd_nidnet;
1946 if (lcfg->lcfg_command == LCFG_SETUP &&
1947 lcfg->lcfg_bufcount != 2 && nidnet) {
1948 CDEBUG(D_CONFIG, "Adding net %s info to setup "
1949 "command for client %s\n", nidnet,
1950 lustre_cfg_string(lcfg, 0));
1951 lustre_cfg_bufs_set_string(&bufs, 4, nidnet);
1956 * Skip add_conn command if uuid is
1957 * not on restricted net
1959 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1960 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1961 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1962 char *uuid_str = lustre_cfg_string(lcfg, 1);
1964 if (lcfg->lcfg_command == LCFG_ADD_CONN &&
1965 lsi->lsi_lmd->lmd_nidnet &&
1966 LNET_NIDNET(libcfs_str2nid(uuid_str)) !=
1967 libcfs_str2net(lsi->lsi_lmd->lmd_nidnet)) {
1968 CDEBUG(D_CONFIG, "skipping add_conn for %s\n",
1971 /* No processing! */
1976 OBD_ALLOC(lcfg_new, lustre_cfg_len(bufs.lcfg_bufcount,
1979 GOTO(out, rc = -ENOMEM);
1981 lustre_cfg_init(lcfg_new, lcfg->lcfg_command, &bufs);
1982 lcfg_new->lcfg_num = lcfg->lcfg_num;
1983 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1986 * XXX Hack to try to remain binary compatible with
1987 * pre-newconfig logs
1989 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1990 (lcfg->lcfg_nid >> 32) == 0) {
1991 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1993 lcfg_new->lcfg_nid =
1994 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1995 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1996 lcfg->lcfg_nal, addr,
1997 libcfs_nid2str(lcfg_new->lcfg_nid));
1999 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
2002 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
2004 rc = class_process_config(lcfg_new);
2005 OBD_FREE(lcfg_new, lustre_cfg_len(lcfg_new->lcfg_bufcount,
2006 lcfg_new->lcfg_buflens));
2008 OBD_FREE(inst_name, inst_len);
2012 CERROR("Unknown llog record type %#x encountered\n",
2018 CERROR("%s: cfg command failed: rc = %d\n",
2019 handle->lgh_ctxt->loc_obd->obd_name, rc);
2020 class_config_dump_handler(NULL, handle, rec, data);
2024 EXPORT_SYMBOL(class_config_llog_handler);
2026 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
2027 char *name, struct config_llog_instance *cfg)
2029 struct llog_process_cat_data cd = {
2030 .lpcd_first_idx = 0,
2031 .lpcd_read_mode = LLOG_READ_MODE_NORMAL,
2033 struct llog_handle *llh;
2038 CDEBUG(D_INFO, "looking up llog %s\n", name);
2039 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
2043 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
2045 GOTO(parse_out, rc);
2047 /* continue processing from where we last stopped to end-of-log */
2049 cd.lpcd_first_idx = cfg->cfg_last_idx;
2050 callback = cfg->cfg_callback;
2051 LASSERT(callback != NULL);
2053 callback = class_config_llog_handler;
2056 cd.lpcd_last_idx = 0;
2058 rc = llog_process(env, llh, callback, cfg, &cd);
2060 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
2061 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
2063 cfg->cfg_last_idx = cd.lpcd_last_idx;
2066 llog_close(env, llh);
2069 EXPORT_SYMBOL(class_config_parse_llog);
2072 * Get marker cfg_flag
2074 void llog_get_marker_cfg_flags(struct llog_rec_hdr *rec,
2075 unsigned int *cfg_flags)
2077 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2078 struct cfg_marker *marker;
2080 if (lcfg->lcfg_command == LCFG_MARKER) {
2081 marker = lustre_cfg_buf(lcfg, 1);
2082 if (marker->cm_flags & CM_START) {
2083 *cfg_flags = CFG_F_MARKER;
2084 if (marker->cm_flags & CM_SKIP)
2085 *cfg_flags = CFG_F_SKIP;
2086 } else if (marker->cm_flags & CM_END) {
2089 CDEBUG(D_INFO, "index=%d, cm_flags=%#08x cfg_flags=%#08x\n",
2090 rec->lrh_index, marker->cm_flags, *cfg_flags);
2095 * Parse config record and output dump in supplied buffer.
2097 * This is separated from class_config_dump_handler() to use
2098 * for ioctl needs as well
2101 * - { index: 4, event: attach, device: lustrewt-clilov, type: lov,
2102 * UUID: lustrewt-clilov_UUID }
2104 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size,
2105 unsigned int *cfg_flags, bool raw)
2107 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2109 char *end = buf + size;
2111 struct lcfg_type_data *ldata;
2114 LASSERT(rec->lrh_type == OBD_CFG_REC);
2116 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
2117 lustre_swab_lustre_cfg(lcfg);
2121 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2125 ldata = lcfg_cmd2data(lcfg->lcfg_command);
2129 llog_get_marker_cfg_flags(rec, cfg_flags);
2130 if ((lcfg->lcfg_command == LCFG_MARKER) && likely(!raw))
2132 /* entries outside marker are skipped */
2133 if (!(*cfg_flags & CFG_F_MARKER) && !raw)
2135 /* inside skipped marker */
2136 if ((*cfg_flags & CFG_F_SKIP) && !raw)
2139 /* form YAML entity */
2140 ptr += snprintf(ptr, end - ptr, "- { index: %u, event: %s",
2141 rec->lrh_index, ldata->ltd_name);
2145 if (lcfg->lcfg_flags) {
2146 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
2151 if (lcfg->lcfg_num) {
2152 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
2157 if (lcfg->lcfg_nid) {
2158 char nidstr[LNET_NIDSTR_SIZE];
2160 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2161 ptr += snprintf(ptr, end - ptr, ", nid: %s(%#llx)",
2162 nidstr, lcfg->lcfg_nid);
2167 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
2168 ptr += snprintf(ptr, end - ptr, ", device: %s",
2169 lustre_cfg_string(lcfg, 0));
2174 if (lcfg->lcfg_command == LCFG_SET_PARAM) {
2176 * set_param -P parameters have param=val here, separate
2177 * them through pointer magic and print them out in
2180 char *cfg_str = lustre_cfg_string(lcfg, 1);
2181 char *tmp = strchr(cfg_str, '=');
2187 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[0]);
2188 len = tmp - cfg_str + 1;
2189 snprintf(ptr, len, "%s", cfg_str);
2192 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[1]);
2193 ptr += snprintf(ptr, end - ptr, "%s", tmp + 1);
2198 if (lcfg->lcfg_command == LCFG_MARKER) {
2199 struct cfg_marker *marker;
2201 marker = lustre_cfg_buf(lcfg, 1);
2202 ptr += snprintf(ptr, end - ptr, ", flags: %#04x",
2204 ptr += snprintf(ptr, end - ptr, ", version: %d.%d.%d.%d",
2205 OBD_OCD_VERSION_MAJOR(marker->cm_vers),
2206 OBD_OCD_VERSION_MINOR(marker->cm_vers),
2207 OBD_OCD_VERSION_PATCH(marker->cm_vers),
2208 OBD_OCD_VERSION_FIX(marker->cm_vers));
2209 ptr += snprintf(ptr, end - ptr, ", createtime: %lld",
2210 marker->cm_createtime);
2211 ptr += snprintf(ptr, end - ptr, ", canceltime: %lld",
2212 marker->cm_canceltime);
2217 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
2218 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0) {
2219 ptr += snprintf(ptr, end - ptr, ", %s: %s",
2220 ldata->ltd_bufs[i - 1],
2221 lustre_cfg_string(lcfg, i));
2228 ptr += snprintf(ptr, end - ptr, " }\n");
2230 /* Return consumed bytes. If the buffer overflowed, zero last byte */
2241 * parse config record and output dump in supplied buffer.
2242 * This is separated from class_config_dump_handler() to use
2243 * for ioctl needs as well
2245 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
2247 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2249 char *end = buf + size;
2254 LASSERT(rec->lrh_type == OBD_CFG_REC);
2255 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2259 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
2260 if (lcfg->lcfg_flags)
2261 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
2265 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
2267 if (lcfg->lcfg_nid) {
2268 char nidstr[LNET_NIDSTR_SIZE];
2270 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2271 ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx) ",
2272 nidstr, lcfg->lcfg_nid);
2275 if (lcfg->lcfg_command == LCFG_MARKER) {
2276 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
2278 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
2279 marker->cm_step, marker->cm_flags,
2280 marker->cm_tgtname, marker->cm_comment);
2284 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
2285 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
2286 lustre_cfg_string(lcfg, i));
2289 ptr += snprintf(ptr, end - ptr, "\n");
2290 /* return consumed bytes */
2295 int class_config_dump_handler(const struct lu_env *env,
2296 struct llog_handle *handle,
2297 struct llog_rec_hdr *rec, void *data)
2304 OBD_ALLOC(outstr, 256);
2308 if (rec->lrh_type == OBD_CFG_REC) {
2309 class_config_parse_rec(rec, outstr, 256);
2310 LCONSOLE(D_WARNING, " %s\n", outstr);
2312 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
2316 OBD_FREE(outstr, 256);
2321 * Call class_cleanup and class_detach.
2322 * "Manual" only in the sense that we're faking lcfg commands.
2324 int class_manual_cleanup(struct obd_device *obd)
2327 struct lustre_cfg *lcfg;
2328 struct lustre_cfg_bufs bufs;
2334 CERROR("empty cleanup\n");
2339 strlcat(flags, "F", sizeof(flags));
2341 strlcat(flags, "A", sizeof(flags));
2343 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
2344 obd->obd_name, flags);
2346 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
2347 lustre_cfg_bufs_set_string(&bufs, 1, flags);
2348 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
2351 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
2353 rc = class_process_config(lcfg);
2355 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
2359 /* the lcfg is almost the same for both ops */
2360 lcfg->lcfg_command = LCFG_DETACH;
2361 rc = class_process_config(lcfg);
2363 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
2365 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
2368 EXPORT_SYMBOL(class_manual_cleanup);
2370 #ifdef HAVE_SERVER_SUPPORT
2372 * nid<->nidstats hash operations
2375 nidstats_hash(struct cfs_hash *hs, const void *key, unsigned int mask)
2377 return cfs_hash_djb2_hash(key, sizeof(struct lnet_nid), mask);
2381 nidstats_key(struct hlist_node *hnode)
2383 struct nid_stat *ns;
2385 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2391 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2393 return nid_same((struct lnet_nid *)nidstats_key(hnode),
2394 (struct lnet_nid *)key);
2398 nidstats_object(struct hlist_node *hnode)
2400 return hlist_entry(hnode, struct nid_stat, nid_hash);
2404 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2406 struct nid_stat *ns;
2408 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2413 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2415 struct nid_stat *ns;
2417 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2421 static struct cfs_hash_ops nid_stat_hash_ops = {
2422 .hs_hash = nidstats_hash,
2423 .hs_key = nidstats_key,
2424 .hs_keycmp = nidstats_keycmp,
2425 .hs_object = nidstats_object,
2426 .hs_get = nidstats_get,
2427 .hs_put_locked = nidstats_put_locked,
2431 * client_generation<->export hash operations
2435 gen_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2437 return cfs_hash_djb2_hash(key, sizeof(__u32), mask);
2441 gen_key(struct hlist_node *hnode)
2443 struct obd_export *exp;
2445 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2447 RETURN(&exp->exp_target_data.ted_lcd->lcd_generation);
2451 * NOTE: It is impossible to find an export that is in failed
2452 * state with this function
2455 gen_kepcmp(const void *key, struct hlist_node *hnode)
2457 struct obd_export *exp;
2460 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2462 RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key &&
2467 gen_export_object(struct hlist_node *hnode)
2469 return hlist_entry(hnode, struct obd_export, exp_gen_hash);
2473 gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2475 struct obd_export *exp;
2477 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2478 class_export_get(exp);
2482 gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2484 struct obd_export *exp;
2486 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2487 class_export_put(exp);
2490 static struct cfs_hash_ops gen_hash_ops = {
2491 .hs_hash = gen_hash,
2493 .hs_keycmp = gen_kepcmp,
2494 .hs_object = gen_export_object,
2495 .hs_get = gen_export_get,
2496 .hs_put_locked = gen_export_put_locked,
2499 #endif /* HAVE_SERVER_SUPPORT */