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 struct lnet_nid *nid = value;
415 if (libcfs_strnid(nid, buf) == 0)
419 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
423 static int parse_net(char *buf, void *value)
425 __u32 *net = (__u32 *)value;
427 *net = libcfs_str2net(buf);
428 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
441 * endh is set to next separator
443 static int class_parse_value(char *buf, int opc, void *value, char **endh,
452 while (*buf == ',' || *buf == ':')
454 if (*buf == ' ' || *buf == '/' || *buf == '\0')
457 /* NID separators or end of NIDs */
458 endp = strpbrk(buf, ",: /");
460 endp = buf + strlen(buf);
467 case CLASS_PARSE_NID:
468 rc = parse_nid(buf, value, quiet);
470 case CLASS_PARSE_NET:
471 rc = parse_net(buf, value);
482 int class_parse_nid(char *buf, struct lnet_nid *nid, char **endh)
484 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
486 EXPORT_SYMBOL(class_parse_nid);
488 int class_parse_nid_quiet(char *buf, struct lnet_nid *nid, char **endh)
490 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
492 EXPORT_SYMBOL(class_parse_nid_quiet);
494 int class_parse_net(char *buf, __u32 *net, char **endh)
496 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
500 * 1 param contains key and match
501 * 0 param contains key and not match
502 * -1 param does not contain key
504 int class_match_nid(char *buf, char *key, struct lnet_nid *nid)
509 while (class_find_param(buf, key, &buf) == 0) {
511 * please restrict to the NIDs pertaining to
514 while (class_parse_nid(buf, &tmp, &buf) == 0) {
515 if (nid_same(&tmp, nid))
522 EXPORT_SYMBOL(class_match_nid);
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) {
542 EXPORT_SYMBOL(class_match_net);
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 CFS_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(D_WARNING, "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 - %s\n", obd->obd_name, obd,
920 atomic_read(&obd->obd_refcount), scope);
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);
992 EXPORT_SYMBOL(class_add_conn);
994 /** Remove a failover NID location. */
995 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
997 struct obd_import *imp;
998 struct obd_uuid uuid;
1003 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
1004 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
1005 CERROR("invalid conn_uuid\n");
1008 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
1009 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
1010 CERROR("can't del connection on non-client dev\n");
1014 imp = obd->u.cli.cl_import;
1016 CERROR("try to del conn on immature client dev\n");
1020 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
1021 rc = obd_del_conn(imp, &uuid);
1026 static LIST_HEAD(lustre_profile_list);
1027 static DEFINE_SPINLOCK(lustre_profile_list_lock);
1029 static struct lustre_profile *class_get_profile_nolock(const char *prof)
1031 struct lustre_profile *lprof;
1034 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
1035 if (strcmp(lprof->lp_profile, prof) == 0) {
1043 struct lustre_profile *class_get_profile(const char *prof)
1045 struct lustre_profile *lprof;
1048 spin_lock(&lustre_profile_list_lock);
1049 lprof = class_get_profile_nolock(prof);
1050 spin_unlock(&lustre_profile_list_lock);
1053 EXPORT_SYMBOL(class_get_profile);
1056 * Create a named "profile".
1057 * This defines the MDC and OSC names to use for a client.
1058 * This also is used to define the LOV to be used by a MDT.
1060 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
1061 int mdclen, char *mdc)
1063 struct lustre_profile *lprof;
1068 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
1070 OBD_ALLOC(lprof, sizeof(*lprof));
1073 INIT_LIST_HEAD(&lprof->lp_list);
1075 LASSERT(proflen == (strlen(prof) + 1));
1076 OBD_ALLOC(lprof->lp_profile, proflen);
1077 if (!lprof->lp_profile)
1078 GOTO(out, err = -ENOMEM);
1079 memcpy(lprof->lp_profile, prof, proflen);
1081 LASSERT(osclen == (strlen(osc) + 1));
1082 OBD_ALLOC(lprof->lp_dt, osclen);
1084 GOTO(out, err = -ENOMEM);
1085 memcpy(lprof->lp_dt, osc, osclen);
1088 LASSERT(mdclen == (strlen(mdc) + 1));
1089 OBD_ALLOC(lprof->lp_md, mdclen);
1091 GOTO(out, err = -ENOMEM);
1092 memcpy(lprof->lp_md, mdc, mdclen);
1095 spin_lock(&lustre_profile_list_lock);
1097 lprof->lp_list_deleted = false;
1099 list_add(&lprof->lp_list, &lustre_profile_list);
1100 spin_unlock(&lustre_profile_list_lock);
1105 OBD_FREE(lprof->lp_md, mdclen);
1107 OBD_FREE(lprof->lp_dt, osclen);
1108 if (lprof->lp_profile)
1109 OBD_FREE(lprof->lp_profile, proflen);
1110 OBD_FREE(lprof, sizeof(*lprof));
1114 void class_del_profile(const char *prof)
1116 struct lustre_profile *lprof;
1120 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
1122 spin_lock(&lustre_profile_list_lock);
1123 lprof = class_get_profile_nolock(prof);
1125 /* because get profile increments the ref counter */
1127 list_del(&lprof->lp_list);
1128 lprof->lp_list_deleted = true;
1129 spin_unlock(&lustre_profile_list_lock);
1131 class_put_profile(lprof);
1133 spin_unlock(&lustre_profile_list_lock);
1137 EXPORT_SYMBOL(class_del_profile);
1139 void class_put_profile(struct lustre_profile *lprof)
1141 spin_lock(&lustre_profile_list_lock);
1142 if ((--lprof->lp_refs) > 0) {
1143 LASSERT(lprof->lp_refs > 0);
1144 spin_unlock(&lustre_profile_list_lock);
1147 spin_unlock(&lustre_profile_list_lock);
1149 /* confirm not a negative number */
1150 LASSERT(lprof->lp_refs == 0);
1153 * At least one class_del_profile/profiles must be called
1154 * on the target profile or lustre_profile_list will corrupt
1156 LASSERT(lprof->lp_list_deleted);
1157 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
1158 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
1160 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
1161 OBD_FREE(lprof, sizeof(*lprof));
1163 EXPORT_SYMBOL(class_put_profile);
1166 void class_del_profiles(void)
1168 struct lustre_profile *lprof, *n;
1171 spin_lock(&lustre_profile_list_lock);
1172 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
1173 list_del(&lprof->lp_list);
1174 lprof->lp_list_deleted = true;
1175 spin_unlock(&lustre_profile_list_lock);
1177 class_put_profile(lprof);
1179 spin_lock(&lustre_profile_list_lock);
1181 spin_unlock(&lustre_profile_list_lock);
1184 EXPORT_SYMBOL(class_del_profiles);
1187 * We can't call lquota_process_config directly because
1188 * it lives in a module that must be loaded after this one.
1190 #ifdef HAVE_SERVER_SUPPORT
1191 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
1192 #endif /* HAVE_SERVER_SUPPORT */
1195 * Rename the proc parameter in \a cfg with a new name \a new_name.
1197 * \param cfg config structure which contains the proc parameter
1198 * \param new_name new name of the proc parameter
1200 * \retval valid-pointer pointer to the newly-allocated config structure
1201 * which contains the renamed proc parameter
1202 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
1203 * not contain a proc parameter
1204 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
1206 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
1207 const char *new_name)
1209 struct lustre_cfg_bufs *bufs = NULL;
1210 struct lustre_cfg *new_cfg = NULL;
1212 char *new_param = NULL;
1219 if (!cfg || !new_name)
1220 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1222 param = lustre_cfg_string(cfg, 1);
1224 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1226 value = strchr(param, '=');
1228 name_len = value - param;
1230 name_len = strlen(param);
1232 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1234 OBD_ALLOC(new_param, new_len);
1236 GOTO(out_nocfg, new_cfg = ERR_PTR(-ENOMEM));
1238 strlcpy(new_param, new_name, new_len);
1240 strcat(new_param, value);
1242 OBD_ALLOC_PTR(bufs);
1244 GOTO(out_free_param, new_cfg = ERR_PTR(-ENOMEM));
1246 lustre_cfg_bufs_reset(bufs, NULL);
1247 lustre_cfg_bufs_init(bufs, cfg);
1248 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1250 OBD_ALLOC(new_cfg, lustre_cfg_len(bufs->lcfg_bufcount,
1251 bufs->lcfg_buflen));
1253 GOTO(out_free_buf, new_cfg = ERR_PTR(-ENOMEM));
1255 lustre_cfg_init(new_cfg, cfg->lcfg_command, bufs);
1257 new_cfg->lcfg_num = cfg->lcfg_num;
1258 new_cfg->lcfg_flags = cfg->lcfg_flags;
1259 new_cfg->lcfg_nid = cfg->lcfg_nid;
1260 new_cfg->lcfg_nal = cfg->lcfg_nal;
1264 OBD_FREE(new_param, new_len);
1268 EXPORT_SYMBOL(lustre_cfg_rename);
1270 static ssize_t process_param2_config(struct lustre_cfg *lcfg)
1272 char *param = lustre_cfg_string(lcfg, 1);
1273 char *upcall = lustre_cfg_string(lcfg, 2);
1274 struct kobject *kobj = NULL;
1275 const char *subsys = param;
1276 char *newparam = NULL;
1278 [0] = "/usr/sbin/lctl",
1289 print_lustre_cfg(lcfg);
1291 len = strcspn(param, ".=");
1295 /* If we find '=' then its the top level sysfs directory */
1296 if (param[len] == '=')
1297 RETURN(class_set_global(param));
1299 subsys = kstrndup(param, len, GFP_KERNEL);
1303 kobj = kset_find_obj(lustre_kset, subsys);
1306 char *value = param;
1310 param = strsep(&value, "=");
1311 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s", param);
1312 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1313 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1314 ktime_get_real_seconds());
1317 rc = kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
1318 for (i = 0; i < ARRAY_SIZE(envp); i++)
1326 /* Add upcall processing here. Now only lctl is supported */
1327 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1328 CERROR("Unsupported upcall %s\n", upcall);
1332 /* root_squash and nosquash_nids settings must be applied to
1333 * global subsystem (*.) so that it is taken into account by
1334 * both client and server sides. So do the equivalent of a
1335 * 's / mdt. / *. /'.
1337 if ((strstr(param, PARAM_NOSQUASHNIDS) ||
1338 strstr(param, PARAM_ROOTSQUASH)) &&
1339 (param[0] != '*' || param[1] != '.')) {
1340 newparam = kmalloc(strlen(param) + 1, GFP_NOFS);
1344 snprintf(newparam, strlen(param) + 1, "*%s", param + len);
1345 argv[2] = (char *)newparam;
1348 start = ktime_get();
1349 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1353 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1354 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1355 (long)ktime_us_delta(end, start));
1357 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1358 argv[0], argv[1], argv[2],
1359 (long)ktime_us_delta(end, start));
1367 #ifdef HAVE_SERVER_SUPPORT
1368 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1370 quota_process_config = qpc;
1372 EXPORT_SYMBOL(lustre_register_quota_process_config);
1373 #endif /* HAVE_SERVER_SUPPORT */
1376 * Process configuration commands given in lustre_cfg form.
1377 * These may come from direct calls (e.g. class_manual_cleanup)
1378 * or processing the config llog, or ioctl from lctl.
1380 int class_process_config(struct lustre_cfg *lcfg)
1382 struct obd_device *obd;
1383 struct lnet_nid nid;
1386 LASSERT(lcfg && !IS_ERR(lcfg));
1387 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1389 /* Commands that don't need a device */
1390 switch (lcfg->lcfg_command) {
1392 err = class_attach(lcfg);
1395 case LCFG_ADD_UUID: {
1397 "adding mapping from uuid %s to nid %#llx (%s)\n",
1398 lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid,
1399 libcfs_nid2str(lcfg->lcfg_nid));
1402 if (lcfg->lcfg_nid) {
1403 lnet_nid4_to_nid(lcfg->lcfg_nid, &nid);
1405 char *nidstr = lustre_cfg_string(lcfg, 2);
1408 err = libcfs_strnid(&nid, nidstr);
1413 err = class_add_uuid(lustre_cfg_string(lcfg, 1), &nid);
1416 case LCFG_DEL_UUID: {
1417 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1418 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) ==
1419 0) ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1421 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1424 case LCFG_MOUNTOPT: {
1425 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1426 lustre_cfg_string(lcfg, 1),
1427 lustre_cfg_string(lcfg, 2),
1428 lustre_cfg_string(lcfg, 3));
1430 * set these mount options somewhere, so ll_fill_super
1433 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1434 lustre_cfg_string(lcfg, 1),
1435 LUSTRE_CFG_BUFLEN(lcfg, 2),
1436 lustre_cfg_string(lcfg, 2),
1437 LUSTRE_CFG_BUFLEN(lcfg, 3),
1438 lustre_cfg_string(lcfg, 3));
1441 case LCFG_DEL_MOUNTOPT: {
1442 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1443 lustre_cfg_string(lcfg, 1));
1444 class_del_profile(lustre_cfg_string(lcfg, 1));
1447 case LCFG_SET_TIMEOUT: {
1448 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1449 obd_timeout, lcfg->lcfg_num);
1450 obd_timeout = max(lcfg->lcfg_num, 1U);
1451 ping_interval = max(obd_timeout / 4, 1U);
1452 obd_timeout_set = 1;
1455 case LCFG_SET_LDLM_TIMEOUT: {
1456 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1457 ldlm_timeout, lcfg->lcfg_num);
1458 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1459 if (ldlm_timeout >= obd_timeout)
1460 ldlm_timeout = max(obd_timeout / 3, 1U);
1461 ldlm_timeout_set = 1;
1464 case LCFG_SET_UPCALL: {
1465 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1466 /* COMPAT_146 Don't fail on old configs */
1470 struct cfg_marker *marker;
1472 marker = lustre_cfg_buf(lcfg, 1);
1473 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1474 marker->cm_flags, marker->cm_tgtname,
1475 marker->cm_comment);
1481 /* llite has no OBD */
1482 if (class_match_param(lustre_cfg_string(lcfg, 1),
1483 PARAM_LLITE, NULL) == 0) {
1484 struct lustre_sb_info *lsi;
1489 * The instance name contains the sb:
1490 * lustre-client-aacfe000
1492 tmp = strrchr(lustre_cfg_string(lcfg, 0), '-');
1493 if (!tmp || !*(++tmp))
1494 GOTO(out, err = -EINVAL);
1496 if (sscanf(tmp, "%lx", &addr) != 1)
1497 GOTO(out, err = -EINVAL);
1499 lsi = s2lsi((struct super_block *)addr);
1500 /* This better be a real Lustre superblock! */
1501 LASSERT(lsi->lsi_lmd->lmd_magic == LMD_MAGIC);
1503 count = class_modify_config(lcfg, PARAM_LLITE,
1505 err = count < 0 ? count : 0;
1507 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1508 PARAM_SYS, &tmp) == 0)) {
1509 /* Global param settings */
1510 err = class_set_global(tmp);
1512 * Client or server should not fail to mount if
1513 * it hits an unknown configuration parameter.
1516 CWARN("Ignoring unknown param %s\n", tmp);
1519 #ifdef HAVE_SERVER_SUPPORT
1520 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1521 PARAM_QUOTA, &tmp) == 0) &&
1522 quota_process_config) {
1523 err = (*quota_process_config)(lcfg);
1525 #endif /* HAVE_SERVER_SUPPORT */
1530 case LCFG_SET_PARAM: {
1531 err = process_param2_config(lcfg);
1535 /* Commands that require a device */
1536 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1538 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1539 CERROR("this lcfg command requires a device name\n");
1541 CERROR("no device for: %s\n",
1542 lustre_cfg_string(lcfg, 0));
1544 GOTO(out, err = -EINVAL);
1546 switch(lcfg->lcfg_command) {
1548 err = class_setup(obd, lcfg);
1552 err = class_detach(obd, lcfg);
1555 case LCFG_CLEANUP: {
1556 err = class_cleanup(obd, lcfg);
1559 case LCFG_ADD_CONN: {
1560 err = class_add_conn(obd, lcfg);
1563 case LCFG_DEL_CONN: {
1564 err = class_del_conn(obd, lcfg);
1567 case LCFG_POOL_NEW: {
1568 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1571 case LCFG_POOL_ADD: {
1572 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1573 lustre_cfg_string(lcfg, 3));
1576 case LCFG_POOL_REM: {
1577 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1578 lustre_cfg_string(lcfg, 3));
1581 case LCFG_POOL_DEL: {
1582 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1586 * Process config log ADD_MDC record twice to add MDC also to LOV
1589 * add 0:lustre-clilmv 1:lustre-MDT0000_UUID 2:0 3:1
1590 * 4:lustre-MDT0000-mdc_UUID
1592 case LCFG_ADD_MDC: {
1593 struct obd_device *lov_obd;
1596 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1600 /* make sure this is client LMV log entry */
1601 clilmv = strstr(lustre_cfg_string(lcfg, 0), "clilmv");
1606 * replace 'lmv' with 'lov' name to address LOV device and
1607 * process llog record to add MDC there.
1610 lov_obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1612 err = obd_process_config(lov_obd, sizeof(*lcfg), lcfg);
1615 CERROR("%s: Cannot find LOV by %s name, rc = %d\n",
1616 obd->obd_name, lustre_cfg_string(lcfg, 0), err);
1618 /* restore 'lmv' name */
1623 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1629 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1630 CWARN("Ignoring error %d on optional command %#x\n", err,
1631 lcfg->lcfg_command);
1636 EXPORT_SYMBOL(class_process_config);
1638 ssize_t class_modify_config(struct lustre_cfg *lcfg, const char *prefix,
1639 struct kobject *kobj)
1641 const struct kobj_type *typ;
1645 if (lcfg->lcfg_command != LCFG_PARAM) {
1646 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1650 typ = get_ktype(kobj);
1651 if (!typ || !typ->default_groups)
1654 print_lustre_cfg(lcfg);
1657 * e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1658 * or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1659 * or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36
1661 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1662 struct attribute *attr = NULL;
1667 key = lustre_cfg_buf(lcfg, i);
1668 /* Strip off prefix */
1669 if (class_match_param(key, prefix, &key))
1671 * If the prefix doesn't match, return error so we
1672 * can pass it down the stack
1676 value = strchr(key, '=');
1677 if (!value || *(value + 1) == 0) {
1678 CERROR("%s: can't parse param '%s' (missing '=')\n",
1679 lustre_cfg_string(lcfg, 0),
1680 lustre_cfg_string(lcfg, i));
1681 /* continue parsing other params */
1684 keylen = value - key;
1687 attr = get_attr_starts_with(typ, key, keylen);
1689 char *envp[4], *param, *path;
1691 path = kobject_get_path(kobj, GFP_KERNEL);
1695 /* convert sysfs path to uevent format */
1697 while ((param = strchr(param, '/')) != NULL)
1700 param = strstr(path, "fs.lustre.") + 10;
1702 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s.%.*s",
1703 param, (int) keylen, key);
1704 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1705 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1706 ktime_get_real_seconds());
1709 if (kobject_uevent_env(kobj, KOBJ_CHANGE, envp)) {
1710 CERROR("%s: failed to send uevent %s\n",
1711 kobject_name(kobj), key);
1714 for (i = 0; i < ARRAY_SIZE(envp); i++)
1718 count += lustre_attr_store(kobj, attr, value,
1724 EXPORT_SYMBOL(class_modify_config);
1727 * Supplemental functions for config logs, it allocates lustre_cfg
1728 * buffers plus initialized llog record header at the beginning.
1730 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1732 struct llog_cfg_rec *lcr;
1737 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1738 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1739 sizeof(struct llog_rec_tail);
1741 OBD_ALLOC(lcr, reclen);
1745 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1747 lcr->lcr_hdr.lrh_len = reclen;
1748 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1752 EXPORT_SYMBOL(lustre_cfg_rec_new);
1754 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1757 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1760 EXPORT_SYMBOL(lustre_cfg_rec_free);
1763 * Parse a configuration llog, doing various manipulations on them
1764 * for various reasons, (modifications for compatibility, skip obsolete
1765 * records, change uuids, etc), then class_process_config() resulting
1768 int class_config_llog_handler(const struct lu_env *env,
1769 struct llog_handle *handle,
1770 struct llog_rec_hdr *rec, void *data)
1772 struct config_llog_instance *cfg = data;
1773 int cfg_len = rec->lrh_len;
1774 char *cfg_buf = (char *) (rec + 1);
1778 /* class_config_dump_handler(handle, rec, data); */
1780 switch (rec->lrh_type) {
1782 struct lustre_cfg *lcfg, *lcfg_new;
1783 struct lustre_cfg_bufs bufs;
1784 char *inst_name = NULL;
1788 lcfg = (struct lustre_cfg *)cfg_buf;
1789 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1790 lustre_swab_lustre_cfg(lcfg);
1794 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1798 /* Figure out config state info */
1799 if (lcfg->lcfg_command == LCFG_MARKER) {
1800 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1801 lustre_swab_cfg_marker(marker, swab,
1802 LUSTRE_CFG_BUFLEN(lcfg, 1));
1803 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1804 cfg->cfg_flags, marker->cm_flags);
1805 if (marker->cm_flags & CM_START) {
1806 /* all previous flags off */
1807 cfg->cfg_flags = CFG_F_MARKER;
1808 server_name2index(marker->cm_tgtname,
1809 &cfg->cfg_lwp_idx, NULL);
1810 if (marker->cm_flags & CM_SKIP) {
1811 cfg->cfg_flags |= CFG_F_SKIP;
1812 CDEBUG(D_CONFIG, "SKIP #%d\n",
1814 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1816 lustre_check_exclusion(cfg->cfg_sb,
1817 marker->cm_tgtname))) {
1818 cfg->cfg_flags |= CFG_F_EXCLUDE;
1819 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1822 } else if (marker->cm_flags & CM_END) {
1827 * A config command without a start marker before it is
1830 if (!(cfg->cfg_flags & CFG_F_MARKER) &&
1831 (lcfg->lcfg_command != LCFG_MARKER)) {
1832 CWARN("Skip config outside markers, (inst: %016lx, uuid: %s, flags: %#x)\n",
1834 cfg->cfg_uuid.uuid, cfg->cfg_flags);
1835 cfg->cfg_flags |= CFG_F_SKIP;
1837 if (cfg->cfg_flags & CFG_F_SKIP) {
1838 CDEBUG(D_CONFIG, "skipping %#x\n",
1841 /* No processing! */
1846 * For interoperability between 1.8 and 2.0,
1847 * rename "mds" OBD device type to "mdt".
1850 char *typename = lustre_cfg_string(lcfg, 1);
1851 char *index = lustre_cfg_string(lcfg, 2);
1853 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1854 strcmp(typename, "mds") == 0)) {
1855 CWARN("For 1.8 interoperability, rename obd "
1856 "type from mds to mdt\n");
1859 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1860 strcmp(index, "type") == 0)) {
1861 CDEBUG(D_INFO, "For 1.8 interoperability, "
1862 "set this index to '0'\n");
1868 #ifdef HAVE_SERVER_SUPPORT
1869 /* newer MDS replaces LOV/OSC with LOD/OSP */
1870 if ((lcfg->lcfg_command == LCFG_ATTACH ||
1871 lcfg->lcfg_command == LCFG_SET_PARAM ||
1872 lcfg->lcfg_command == LCFG_PARAM) &&
1873 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1874 char *typename = lustre_cfg_string(lcfg, 1);
1877 strcmp(typename, LUSTRE_LOV_NAME) == 0) {
1879 "For 2.x interoperability, rename obd "
1880 "type from lov to lod (%s)\n",
1881 s2lsi(cfg->cfg_sb)->lsi_svname);
1882 strcpy(typename, LUSTRE_LOD_NAME);
1885 strcmp(typename, LUSTRE_OSC_NAME) == 0) {
1887 "For 2.x interoperability, rename obd "
1888 "type from osc to osp (%s)\n",
1889 s2lsi(cfg->cfg_sb)->lsi_svname);
1890 strcpy(typename, LUSTRE_OSP_NAME);
1893 #endif /* HAVE_SERVER_SUPPORT */
1895 if (cfg->cfg_flags & CFG_F_EXCLUDE) {
1896 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1897 lcfg->lcfg_command);
1898 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1899 /* Add inactive instead */
1900 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1903 lustre_cfg_bufs_reset(&bufs, NULL);
1904 lustre_cfg_bufs_init(&bufs, lcfg);
1906 if (cfg->cfg_instance &&
1907 lcfg->lcfg_command != LCFG_SPTLRPC_CONF &&
1908 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1909 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1910 LUSTRE_MAXINSTANCE + 4;
1911 OBD_ALLOC(inst_name, inst_len);
1913 GOTO(out, rc = -ENOMEM);
1914 snprintf(inst_name, inst_len, "%s-%016lx",
1915 lustre_cfg_string(lcfg, 0),
1917 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1918 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1919 lcfg->lcfg_command, inst_name);
1922 /* override llog UUID for clients, to insure they are unique */
1923 if (cfg->cfg_instance && lcfg->lcfg_command == LCFG_ATTACH)
1924 lustre_cfg_bufs_set_string(&bufs, 2,
1925 cfg->cfg_uuid.uuid);
1927 * sptlrpc config record, we expect 2 data segments:
1928 * [0]: fs_name/target_name,
1930 * moving them to index [1] and [2], and insert MGC's
1931 * obdname at index [0].
1933 if (cfg->cfg_instance &&
1934 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1935 /* After ASLR changes cfg_instance this needs fixing */
1936 /* "obd" is set in config_log_find_or_add() */
1937 struct obd_device *obd = (void *)cfg->cfg_instance;
1939 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1940 bufs.lcfg_buflen[1]);
1941 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1942 bufs.lcfg_buflen[0]);
1943 lustre_cfg_bufs_set_string(&bufs, 0,
1948 * Add net info to setup command
1949 * if given on command line.
1950 * So config log will be:
1954 * [3]: inactive-on-startup
1955 * [4]: restrictive net
1957 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1958 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1959 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1960 char *nidnet = lsi->lsi_lmd->lmd_nidnet;
1962 if (lcfg->lcfg_command == LCFG_SETUP &&
1963 lcfg->lcfg_bufcount != 2 && nidnet) {
1964 CDEBUG(D_CONFIG, "Adding net %s info to setup "
1965 "command for client %s\n", nidnet,
1966 lustre_cfg_string(lcfg, 0));
1967 lustre_cfg_bufs_set_string(&bufs, 4, nidnet);
1971 OBD_ALLOC(lcfg_new, lustre_cfg_len(bufs.lcfg_bufcount,
1974 GOTO(out_inst, rc = -ENOMEM);
1976 lustre_cfg_init(lcfg_new, lcfg->lcfg_command, &bufs);
1977 lcfg_new->lcfg_num = lcfg->lcfg_num;
1978 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1981 * XXX Hack to try to remain binary compatible with
1982 * pre-newconfig logs
1984 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1985 (lcfg->lcfg_nid >> 32) == 0) {
1986 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1988 lcfg_new->lcfg_nid =
1989 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1990 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1991 lcfg->lcfg_nal, addr,
1992 libcfs_nid2str(lcfg_new->lcfg_nid));
1994 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1997 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1999 rc = class_process_config(lcfg_new);
2000 OBD_FREE(lcfg_new, lustre_cfg_len(lcfg_new->lcfg_bufcount,
2001 lcfg_new->lcfg_buflens));
2004 OBD_FREE(inst_name, inst_len);
2008 CERROR("Unknown llog record type %#x encountered\n",
2014 CERROR("%s: cfg command failed: rc = %d\n",
2015 handle->lgh_ctxt->loc_obd->obd_name, rc);
2016 class_config_dump_handler(NULL, handle, rec, data);
2020 EXPORT_SYMBOL(class_config_llog_handler);
2022 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
2023 char *name, struct config_llog_instance *cfg)
2025 struct llog_process_cat_data cd = {
2026 .lpcd_first_idx = 0,
2027 .lpcd_read_mode = LLOG_READ_MODE_NORMAL,
2029 struct llog_handle *llh;
2034 CDEBUG(D_INFO, "looking up llog %s\n", name);
2035 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
2039 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
2041 GOTO(parse_out, rc);
2043 /* continue processing from where we last stopped to end-of-log */
2045 cd.lpcd_first_idx = cfg->cfg_last_idx;
2046 callback = cfg->cfg_callback;
2047 LASSERT(callback != NULL);
2049 callback = class_config_llog_handler;
2052 cd.lpcd_last_idx = 0;
2054 rc = llog_process(env, llh, callback, cfg, &cd);
2056 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
2057 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
2059 cfg->cfg_last_idx = cd.lpcd_last_idx;
2062 llog_close(env, llh);
2065 EXPORT_SYMBOL(class_config_parse_llog);
2068 * Get marker cfg_flag
2070 void llog_get_marker_cfg_flags(struct llog_rec_hdr *rec,
2071 unsigned int *cfg_flags)
2073 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2074 struct cfg_marker *marker;
2076 if (lcfg->lcfg_command == LCFG_MARKER) {
2077 marker = lustre_cfg_buf(lcfg, 1);
2078 if (marker->cm_flags & CM_START) {
2079 *cfg_flags = CFG_F_MARKER;
2080 if (marker->cm_flags & CM_SKIP)
2081 *cfg_flags = CFG_F_SKIP;
2082 } else if (marker->cm_flags & CM_END) {
2085 CDEBUG(D_INFO, "index=%d, cm_flags=%#08x cfg_flags=%#08x\n",
2086 rec->lrh_index, marker->cm_flags, *cfg_flags);
2091 * Parse config record and output dump in supplied buffer.
2093 * This is separated from class_config_dump_handler() to use
2094 * for ioctl needs as well
2097 * - { index: 4, event: attach, device: lustrewt-clilov, type: lov,
2098 * UUID: lustrewt-clilov_UUID }
2100 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size,
2101 unsigned int *cfg_flags, bool raw)
2103 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2105 char *end = buf + size;
2107 struct lcfg_type_data *ldata;
2110 LASSERT(rec->lrh_type == OBD_CFG_REC);
2112 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
2113 lustre_swab_lustre_cfg(lcfg);
2117 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2121 ldata = lcfg_cmd2data(lcfg->lcfg_command);
2125 llog_get_marker_cfg_flags(rec, cfg_flags);
2126 if ((lcfg->lcfg_command == LCFG_MARKER) && likely(!raw))
2128 /* entries outside marker are skipped */
2129 if (!(*cfg_flags & CFG_F_MARKER) && !raw)
2131 /* inside skipped marker */
2132 if ((*cfg_flags & CFG_F_SKIP) && !raw)
2135 /* form YAML entity */
2136 ptr += snprintf(ptr, end - ptr, "- { index: %u, event: %s",
2137 rec->lrh_index, ldata->ltd_name);
2141 if (lcfg->lcfg_flags) {
2142 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
2147 if (lcfg->lcfg_num) {
2148 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
2153 if (lcfg->lcfg_nid) {
2154 char nidstr[LNET_NIDSTR_SIZE];
2156 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2157 ptr += snprintf(ptr, end - ptr, ", nid: %s(%#llx)",
2158 nidstr, lcfg->lcfg_nid);
2163 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
2164 ptr += snprintf(ptr, end - ptr, ", device: %s",
2165 lustre_cfg_string(lcfg, 0));
2170 if (lcfg->lcfg_command == LCFG_SET_PARAM) {
2172 * set_param -P parameters have param=val here, separate
2173 * them through pointer magic and print them out in
2176 char *cfg_str = lustre_cfg_string(lcfg, 1);
2177 char *tmp = strchr(cfg_str, '=');
2183 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[0]);
2184 len = tmp - cfg_str + 1;
2185 snprintf(ptr, len, "%s", cfg_str);
2188 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[1]);
2189 ptr += snprintf(ptr, end - ptr, "%s", tmp + 1);
2194 if (lcfg->lcfg_command == LCFG_MARKER) {
2195 struct cfg_marker *marker;
2197 marker = lustre_cfg_buf(lcfg, 1);
2198 ptr += snprintf(ptr, end - ptr, ", flags: %#04x",
2200 ptr += snprintf(ptr, end - ptr, ", version: %d.%d.%d.%d",
2201 OBD_OCD_VERSION_MAJOR(marker->cm_vers),
2202 OBD_OCD_VERSION_MINOR(marker->cm_vers),
2203 OBD_OCD_VERSION_PATCH(marker->cm_vers),
2204 OBD_OCD_VERSION_FIX(marker->cm_vers));
2205 ptr += snprintf(ptr, end - ptr, ", createtime: %lld",
2206 marker->cm_createtime);
2207 ptr += snprintf(ptr, end - ptr, ", canceltime: %lld",
2208 marker->cm_canceltime);
2213 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
2214 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0) {
2215 ptr += snprintf(ptr, end - ptr, ", %s: %s",
2216 ldata->ltd_bufs[i - 1],
2217 lustre_cfg_string(lcfg, i));
2224 ptr += snprintf(ptr, end - ptr, " }\n");
2226 /* Return consumed bytes. If the buffer overflowed, zero last byte */
2237 * parse config record and output dump in supplied buffer.
2238 * This is separated from class_config_dump_handler() to use
2239 * for ioctl needs as well
2241 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
2243 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2245 char *end = buf + size;
2250 LASSERT(rec->lrh_type == OBD_CFG_REC);
2251 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2255 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
2256 if (lcfg->lcfg_flags)
2257 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
2261 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
2263 if (lcfg->lcfg_nid) {
2264 char nidstr[LNET_NIDSTR_SIZE];
2266 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2267 ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx) ",
2268 nidstr, lcfg->lcfg_nid);
2271 if (lcfg->lcfg_command == LCFG_MARKER) {
2272 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
2274 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
2275 marker->cm_step, marker->cm_flags,
2276 marker->cm_tgtname, marker->cm_comment);
2280 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
2281 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
2282 lustre_cfg_string(lcfg, i));
2285 ptr += snprintf(ptr, end - ptr, "\n");
2286 /* return consumed bytes */
2291 int class_config_dump_handler(const struct lu_env *env,
2292 struct llog_handle *handle,
2293 struct llog_rec_hdr *rec, void *data)
2300 OBD_ALLOC(outstr, 256);
2304 if (rec->lrh_type == OBD_CFG_REC) {
2305 class_config_parse_rec(rec, outstr, 256);
2306 LCONSOLE(D_WARNING, " %s\n", outstr);
2308 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
2312 OBD_FREE(outstr, 256);
2317 * Call class_cleanup and class_detach.
2318 * "Manual" only in the sense that we're faking lcfg commands.
2320 int class_manual_cleanup(struct obd_device *obd)
2323 struct lustre_cfg *lcfg;
2324 struct lustre_cfg_bufs bufs;
2330 CERROR("empty cleanup\n");
2335 strlcat(flags, "F", sizeof(flags));
2337 strlcat(flags, "A", sizeof(flags));
2339 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
2340 obd->obd_name, flags);
2342 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
2343 lustre_cfg_bufs_set_string(&bufs, 1, flags);
2344 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
2347 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
2349 rc = class_process_config(lcfg);
2351 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
2355 /* the lcfg is almost the same for both ops */
2356 lcfg->lcfg_command = LCFG_DETACH;
2357 rc = class_process_config(lcfg);
2359 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
2361 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
2364 EXPORT_SYMBOL(class_manual_cleanup);
2366 #ifdef HAVE_SERVER_SUPPORT
2368 * nid<->nidstats hash operations
2371 nidstats_hash(struct cfs_hash *hs, const void *key, unsigned int mask)
2373 return cfs_hash_djb2_hash(key, sizeof(struct lnet_nid), mask);
2377 nidstats_key(struct hlist_node *hnode)
2379 struct nid_stat *ns;
2381 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2387 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2389 return nid_same((struct lnet_nid *)nidstats_key(hnode),
2390 (struct lnet_nid *)key);
2394 nidstats_object(struct hlist_node *hnode)
2396 return hlist_entry(hnode, struct nid_stat, nid_hash);
2400 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2402 struct nid_stat *ns;
2404 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2409 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2411 struct nid_stat *ns;
2413 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2417 static struct cfs_hash_ops nid_stat_hash_ops = {
2418 .hs_hash = nidstats_hash,
2419 .hs_key = nidstats_key,
2420 .hs_keycmp = nidstats_keycmp,
2421 .hs_object = nidstats_object,
2422 .hs_get = nidstats_get,
2423 .hs_put_locked = nidstats_put_locked,
2427 * client_generation<->export hash operations
2431 gen_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2433 return cfs_hash_djb2_hash(key, sizeof(__u32), mask);
2437 gen_key(struct hlist_node *hnode)
2439 struct obd_export *exp;
2441 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2443 RETURN(&exp->exp_target_data.ted_lcd->lcd_generation);
2447 * NOTE: It is impossible to find an export that is in failed
2448 * state with this function
2451 gen_kepcmp(const void *key, struct hlist_node *hnode)
2453 struct obd_export *exp;
2456 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2458 RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key &&
2463 gen_export_object(struct hlist_node *hnode)
2465 return hlist_entry(hnode, struct obd_export, exp_gen_hash);
2469 gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2471 struct obd_export *exp;
2473 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2474 class_export_get(exp);
2478 gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2480 struct obd_export *exp;
2482 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2483 class_export_put(exp);
2486 static struct cfs_hash_ops gen_hash_ops = {
2487 .hs_hash = gen_hash,
2489 .hs_keycmp = gen_kepcmp,
2490 .hs_object = gen_export_object,
2491 .hs_get = gen_export_get,
2492 .hs_put_locked = gen_export_put_locked,
2495 #endif /* HAVE_SERVER_SUPPORT */