4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/obdclass/obd_config.c
37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <linux/kobject.h>
40 #include <linux/string.h>
42 #include <llog_swab.h>
43 #include <lprocfs_status.h>
44 #include <lustre_disk.h>
45 #include <uapi/linux/lustre/lustre_ioctl.h>
46 #include <lustre_log.h>
47 #include <uapi/linux/lustre/lustre_param.h>
48 #include <obd_class.h>
50 #include "llog_internal.h"
52 static struct cfs_hash_ops nid_hash_ops;
53 static struct cfs_hash_ops nid_stat_hash_ops;
54 static struct cfs_hash_ops gen_hash_ops;
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);
149 #endif /* HAVE_SERVER_SUPPORT */
151 /*********** string parsing utils *********/
153 /* returns 0 if we find this key in the buffer, else 1 */
154 int class_find_param(char *buf, char *key, char **valp)
161 ptr = strstr(buf, key);
166 *valp = ptr + strlen(key);
170 EXPORT_SYMBOL(class_find_param);
173 * Check whether the proc parameter \a param is an old parameter or not from
174 * the array \a ptr which contains the mapping from old parameters to new ones.
175 * If it's an old one, then return the pointer to the cfg_interop_param struc-
176 * ture which contains both the old and new parameters.
178 * \param param proc parameter
179 * \param ptr an array which contains the mapping from
180 * old parameters to new ones
182 * \retval valid-pointer pointer to the cfg_interop_param structure
183 * which contains the old and new parameters
184 * \retval NULL \a param or \a ptr is NULL,
185 * or \a param is not an old parameter
187 struct cfg_interop_param *class_find_old_param(const char *param,
188 struct cfg_interop_param *ptr)
196 value = strchr(param, '=');
198 name_len = value - param;
200 name_len = strlen(param);
202 while (ptr->old_param) {
203 if (strncmp(param, ptr->old_param, name_len) == 0 &&
204 name_len == strlen(ptr->old_param))
211 EXPORT_SYMBOL(class_find_old_param);
214 * Finds a parameter in \a params and copies it to \a copy.
216 * Leading spaces are skipped. Next space or end of string is the
217 * parameter terminator with the exception that spaces inside single or double
218 * quotes get included into a parameter. The parameter is copied into \a copy
219 * which has to be allocated big enough by a caller, quotes are stripped in
220 * the copy and the copy is terminated by 0.
222 * On return \a params is set to next parameter or to NULL if last
223 * parameter is returned.
225 * \retval 0 if parameter is returned in \a copy
226 * \retval 1 otherwise
227 * \retval -EINVAL if unbalanced quota is found
229 int class_get_next_param(char **params, char *copy)
244 q1 = strpbrk(str, " '\"");
247 memcpy(copy, str, len);
254 memcpy(copy, str, len);
260 memcpy(copy, str, len);
263 /* search for the matching closing quote */
265 q2 = strchr(str, *q1);
267 CERROR("Unbalanced quota in parameters: \"%s\"\n",
272 memcpy(copy, str, len);
278 EXPORT_SYMBOL(class_get_next_param);
281 * returns 0 if this is the first key in the buffer, else 1.
282 * valp points to first char after key.
284 int class_match_param(char *buf, const char *key, char **valp)
289 if (memcmp(buf, key, strlen(key)) != 0)
293 *valp = buf + strlen(key);
297 EXPORT_SYMBOL(class_match_param);
299 static int parse_nid(char *buf, void *value, int quiet)
301 lnet_nid_t *nid = (lnet_nid_t *)value;
303 *nid = libcfs_str2nid(buf);
304 if (*nid != LNET_NID_ANY)
308 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
312 static int parse_net(char *buf, void *value)
314 __u32 *net = (__u32 *)value;
316 *net = libcfs_str2net(buf);
317 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
330 * endh is set to next separator
332 static int class_parse_value(char *buf, int opc, void *value, char **endh,
341 while (*buf == ',' || *buf == ':')
343 if (*buf == ' ' || *buf == '/' || *buf == '\0')
346 /* NID separators or end of NIDs */
347 endp = strpbrk(buf, ",: /");
349 endp = buf + strlen(buf);
356 case CLASS_PARSE_NID:
357 rc = parse_nid(buf, value, quiet);
359 case CLASS_PARSE_NET:
360 rc = parse_net(buf, value);
371 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
373 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
375 EXPORT_SYMBOL(class_parse_nid);
377 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
379 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
381 EXPORT_SYMBOL(class_parse_nid_quiet);
383 int class_parse_net(char *buf, __u32 *net, char **endh)
385 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
389 * 1 param contains key and match
390 * 0 param contains key and not match
391 * -1 param does not contain key
393 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
398 while (class_find_param(buf, key, &buf) == 0) {
400 * please restrict to the NIDs pertaining to
403 while (class_parse_nid(buf, &tmp, &buf) == 0) {
412 int class_match_net(char *buf, char *key, __u32 net)
417 while (class_find_param(buf, key, &buf) == 0) {
419 * please restrict to the NIDs pertaining to
420 * the specified networks
422 while (class_parse_net(buf, &tmp, &buf) == 0) {
431 char *lustre_cfg_string(struct lustre_cfg *lcfg, u32 index)
435 if (!lcfg->lcfg_buflens[index])
438 s = lustre_cfg_buf(lcfg, index);
443 * make sure it's NULL terminated, even if this kills a char
444 * of data. Try to use the padding first though.
446 if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
447 size_t last = ALIGN(lcfg->lcfg_buflens[index], 8) - 1;
450 /* Use the smaller value */
451 if (last > lcfg->lcfg_buflens[index])
452 last = lcfg->lcfg_buflens[index];
457 CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
463 EXPORT_SYMBOL(lustre_cfg_string);
465 /********************** class fns **********************/
468 * Create a new OBD device and set the type, name and uuid. If successful,
469 * the new device can be accessed by either name or uuid.
471 int class_attach(struct lustre_cfg *lcfg)
473 struct obd_export *exp;
474 struct obd_device *obd = NULL;
475 char *typename, *name, *uuid;
480 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
481 CERROR("No type passed!\n");
484 typename = lustre_cfg_string(lcfg, 1);
486 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
487 CERROR("No name passed!\n");
490 name = lustre_cfg_string(lcfg, 0);
491 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
492 CERROR("No UUID passed!\n");
496 uuid = lustre_cfg_string(lcfg, 2);
498 if (len >= sizeof(obd->obd_uuid)) {
499 CERROR("%s: uuid must be < %d bytes long\n",
500 name, (int)sizeof(obd->obd_uuid));
504 obd = class_newdev(typename, name, uuid);
505 if (IS_ERR(obd)) { /* Already exists or out of obds */
507 CERROR("Cannot create device %s of type %s : %d\n",
511 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
512 "obd %p obd_magic %08X != %08X\n",
513 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
514 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
515 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
517 exp = class_new_export_self(obd, &obd->obd_uuid);
524 obd->obd_self_export = exp;
525 list_del_init(&exp->exp_obd_chain_timed);
526 class_export_put(exp);
528 rc = class_register_device(obd);
530 class_decref(obd, "newdev", obd);
534 obd->obd_attached = 1;
535 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
536 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
540 EXPORT_SYMBOL(class_attach);
543 * Create hashes, self-export, and call type-specific setup.
544 * Setup is effectively the "start this obd" call.
546 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
552 LASSERT(obd != NULL);
553 LASSERTF(obd == class_num2obd(obd->obd_minor),
554 "obd %p != obd_devs[%d] %p\n",
555 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
556 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
557 "obd %p obd_magic %08x != %08x\n",
558 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
560 /* have we attached a type to this device? */
561 if (!obd->obd_attached) {
562 CERROR("Device %d not attached\n", obd->obd_minor);
566 if (obd->obd_set_up) {
567 CERROR("Device %d already setup (type %s)\n",
568 obd->obd_minor, obd->obd_type->typ_name);
572 /* is someone else setting us up right now? (attach inits spinlock) */
573 spin_lock(&obd->obd_dev_lock);
574 if (obd->obd_starting) {
575 spin_unlock(&obd->obd_dev_lock);
576 CERROR("Device %d setup in progress (type %s)\n",
577 obd->obd_minor, obd->obd_type->typ_name);
581 * just leave this on forever. I can't use obd_set_up here because
582 * other fns check that status, and we're not actually set up yet.
584 obd->obd_starting = 1;
585 obd->obd_nid_hash = NULL;
586 obd->obd_nid_stats_hash = NULL;
587 obd->obd_gen_hash = NULL;
588 spin_unlock(&obd->obd_dev_lock);
590 /* create an uuid-export lustre hash */
591 err = rhashtable_init(&obd->obd_uuid_hash, &uuid_hash_params);
593 GOTO(err_starting, err);
595 /* create a nid-export lustre hash */
596 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
599 HASH_NID_BKT_BITS, 0,
602 &nid_hash_ops, CFS_HASH_DEFAULT);
603 if (!obd->obd_nid_hash)
604 GOTO(err_uuid_hash, err = -ENOMEM);
606 /* create a nid-stats lustre hash */
607 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
608 HASH_NID_STATS_CUR_BITS,
609 HASH_NID_STATS_MAX_BITS,
610 HASH_NID_STATS_BKT_BITS, 0,
615 if (!obd->obd_nid_stats_hash)
616 GOTO(err_nid_hash, err = -ENOMEM);
618 /* create a client_generation-export lustre hash */
619 obd->obd_gen_hash = cfs_hash_create("UUID_HASH",
622 HASH_GEN_BKT_BITS, 0,
625 &gen_hash_ops, CFS_HASH_DEFAULT);
626 if (!obd->obd_gen_hash)
627 GOTO(err_nid_stats_hash, err = -ENOMEM);
629 err = obd_setup(obd, lcfg);
631 GOTO(err_gen_hash, err);
635 spin_lock(&obd->obd_dev_lock);
636 /* cleanup drops this */
637 class_incref(obd, "setup", obd);
638 spin_unlock(&obd->obd_dev_lock);
640 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
641 obd->obd_name, obd->obd_uuid.uuid);
646 if (obd->obd_gen_hash) {
647 cfs_hash_putref(obd->obd_gen_hash);
648 obd->obd_gen_hash = NULL;
651 if (obd->obd_nid_stats_hash) {
652 cfs_hash_putref(obd->obd_nid_stats_hash);
653 obd->obd_nid_stats_hash = NULL;
656 if (obd->obd_nid_hash) {
657 cfs_hash_putref(obd->obd_nid_hash);
658 obd->obd_nid_hash = NULL;
661 rhashtable_destroy(&obd->obd_uuid_hash);
663 obd->obd_starting = 0;
664 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
667 EXPORT_SYMBOL(class_setup);
670 * We have finished using this OBD and are ready to destroy it.
671 * There can be no more references to this obd.
673 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
677 if (obd->obd_set_up) {
678 CERROR("OBD device %d still set up\n", obd->obd_minor);
682 spin_lock(&obd->obd_dev_lock);
683 if (!obd->obd_attached) {
684 spin_unlock(&obd->obd_dev_lock);
685 CERROR("OBD device %d not attached\n", obd->obd_minor);
688 obd->obd_attached = 0;
689 spin_unlock(&obd->obd_dev_lock);
691 /* cleanup in progress. we don't like to find this device after now */
692 class_unregister_device(obd);
694 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
695 obd->obd_name, obd->obd_uuid.uuid);
697 class_decref(obd, "newdev", obd);
701 EXPORT_SYMBOL(class_detach);
704 * Start shutting down the OBD. There may be in-progess ops when
705 * this is called. We tell them to start shutting down with a call
706 * to class_disconnect_exports().
708 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
714 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
716 if (!obd->obd_set_up) {
717 CERROR("Device %d not setup\n", obd->obd_minor);
721 spin_lock(&obd->obd_dev_lock);
722 if (obd->obd_stopping) {
723 spin_unlock(&obd->obd_dev_lock);
724 CERROR("OBD %d already stopping\n", obd->obd_minor);
727 /* Leave this on forever */
728 obd->obd_stopping = 1;
730 * function can't return error after that point, so clear setup flag
731 * as early as possible to avoid finding via obd_devs / hash
734 spin_unlock(&obd->obd_dev_lock);
736 /* wait for already-arrived-connections to finish. */
737 while (obd->obd_conn_inprogress > 0)
741 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
742 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
748 LCONSOLE_WARN("Failing over %s\n",
751 obd->obd_no_transno = 1;
752 obd->obd_no_recov = 1;
753 if (OBP(obd, iocontrol)) {
754 obd_iocontrol(OBD_IOC_SYNC,
755 obd->obd_self_export,
760 CERROR("Unrecognised flag '%c'\n", *flag);
764 LASSERT(obd->obd_self_export);
766 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d/%d\n",
767 obd->obd_name, obd->obd_num_exports,
768 atomic_read(&obd->obd_refcount) - 2);
769 dump_exports(obd, 0, D_HA);
770 class_disconnect_exports(obd);
772 /* Precleanup, we must make sure all exports get destroyed. */
773 err = obd_precleanup(obd);
775 CERROR("Precleanup %s returned %d\n",
778 /* destroy an uuid-export hash body */
779 rhashtable_free_and_destroy(&obd->obd_uuid_hash, obd_export_exit,
782 /* destroy a nid-export hash body */
783 if (obd->obd_nid_hash) {
784 cfs_hash_putref(obd->obd_nid_hash);
785 obd->obd_nid_hash = NULL;
788 /* destroy a nid-stats hash body */
789 if (obd->obd_nid_stats_hash) {
790 cfs_hash_putref(obd->obd_nid_stats_hash);
791 obd->obd_nid_stats_hash = NULL;
794 /* destroy a client_generation-export hash body */
795 if (obd->obd_gen_hash) {
796 cfs_hash_putref(obd->obd_gen_hash);
797 obd->obd_gen_hash = NULL;
800 class_decref(obd, "setup", obd);
806 struct obd_device *class_incref(struct obd_device *obd,
810 lu_ref_add_atomic(&obd->obd_reference, scope, source);
811 atomic_inc(&obd->obd_refcount);
812 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
813 atomic_read(&obd->obd_refcount));
817 EXPORT_SYMBOL(class_incref);
819 void class_decref(struct obd_device *obd, const char *scope, const void *source)
823 CDEBUG(D_INFO, "Decref %s (%p) now %d - %s\n", obd->obd_name, obd,
824 atomic_read(&obd->obd_refcount), scope);
826 LASSERT(obd->obd_num_exports >= 0);
827 last = atomic_dec_and_test(&obd->obd_refcount);
828 lu_ref_del(&obd->obd_reference, scope, source);
831 struct obd_export *exp;
833 LASSERT(!obd->obd_attached);
835 * All exports have been destroyed; there should
836 * be no more in-progress ops by this point.
838 exp = obd->obd_self_export;
841 exp->exp_flags |= exp_flags_from_obd(obd);
842 class_unlink_export(exp);
846 EXPORT_SYMBOL(class_decref);
849 * Add a failover NID location.
850 * Client OBD types contact server OBD types using this NID list.
852 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
854 struct obd_import *imp;
855 struct obd_uuid uuid;
860 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
861 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
862 CERROR("invalid conn_uuid\n");
865 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
866 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
867 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
868 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
869 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
870 CERROR("can't add connection on non-client dev\n");
874 imp = obd->u.cli.cl_import;
876 CERROR("try to add conn on immature client dev\n");
880 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
881 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
886 /** Remove a failover NID location. */
887 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
889 struct obd_import *imp;
890 struct obd_uuid uuid;
895 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
896 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
897 CERROR("invalid conn_uuid\n");
900 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
901 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
902 CERROR("can't del connection on non-client dev\n");
906 imp = obd->u.cli.cl_import;
908 CERROR("try to del conn on immature client dev\n");
912 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
913 rc = obd_del_conn(imp, &uuid);
918 static LIST_HEAD(lustre_profile_list);
919 static DEFINE_SPINLOCK(lustre_profile_list_lock);
921 struct lustre_profile *class_get_profile(const char *prof)
923 struct lustre_profile *lprof;
926 spin_lock(&lustre_profile_list_lock);
927 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
928 if (!strcmp(lprof->lp_profile, prof)) {
930 spin_unlock(&lustre_profile_list_lock);
934 spin_unlock(&lustre_profile_list_lock);
937 EXPORT_SYMBOL(class_get_profile);
940 * Create a named "profile".
941 * This defines the MDC and OSC names to use for a client.
942 * This also is used to define the LOV to be used by a MDT.
944 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
945 int mdclen, char *mdc)
947 struct lustre_profile *lprof;
952 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
954 OBD_ALLOC(lprof, sizeof(*lprof));
957 INIT_LIST_HEAD(&lprof->lp_list);
959 LASSERT(proflen == (strlen(prof) + 1));
960 OBD_ALLOC(lprof->lp_profile, proflen);
961 if (!lprof->lp_profile)
962 GOTO(out, err = -ENOMEM);
963 memcpy(lprof->lp_profile, prof, proflen);
965 LASSERT(osclen == (strlen(osc) + 1));
966 OBD_ALLOC(lprof->lp_dt, osclen);
968 GOTO(out, err = -ENOMEM);
969 memcpy(lprof->lp_dt, osc, osclen);
972 LASSERT(mdclen == (strlen(mdc) + 1));
973 OBD_ALLOC(lprof->lp_md, mdclen);
975 GOTO(out, err = -ENOMEM);
976 memcpy(lprof->lp_md, mdc, mdclen);
979 spin_lock(&lustre_profile_list_lock);
981 lprof->lp_list_deleted = false;
983 list_add(&lprof->lp_list, &lustre_profile_list);
984 spin_unlock(&lustre_profile_list_lock);
989 OBD_FREE(lprof->lp_md, mdclen);
991 OBD_FREE(lprof->lp_dt, osclen);
992 if (lprof->lp_profile)
993 OBD_FREE(lprof->lp_profile, proflen);
994 OBD_FREE(lprof, sizeof(*lprof));
998 void class_del_profile(const char *prof)
1000 struct lustre_profile *lprof;
1004 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
1006 lprof = class_get_profile(prof);
1008 spin_lock(&lustre_profile_list_lock);
1009 /* because get profile increments the ref counter */
1011 list_del(&lprof->lp_list);
1012 lprof->lp_list_deleted = true;
1013 spin_unlock(&lustre_profile_list_lock);
1015 class_put_profile(lprof);
1019 EXPORT_SYMBOL(class_del_profile);
1021 void class_put_profile(struct lustre_profile *lprof)
1023 spin_lock(&lustre_profile_list_lock);
1024 if ((--lprof->lp_refs) > 0) {
1025 LASSERT(lprof->lp_refs > 0);
1026 spin_unlock(&lustre_profile_list_lock);
1029 spin_unlock(&lustre_profile_list_lock);
1031 /* confirm not a negative number */
1032 LASSERT(lprof->lp_refs == 0);
1035 * At least one class_del_profile/profiles must be called
1036 * on the target profile or lustre_profile_list will corrupt
1038 LASSERT(lprof->lp_list_deleted);
1039 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
1040 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
1042 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
1043 OBD_FREE(lprof, sizeof(*lprof));
1045 EXPORT_SYMBOL(class_put_profile);
1048 void class_del_profiles(void)
1050 struct lustre_profile *lprof, *n;
1053 spin_lock(&lustre_profile_list_lock);
1054 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
1055 list_del(&lprof->lp_list);
1056 lprof->lp_list_deleted = true;
1057 spin_unlock(&lustre_profile_list_lock);
1059 class_put_profile(lprof);
1061 spin_lock(&lustre_profile_list_lock);
1063 spin_unlock(&lustre_profile_list_lock);
1066 EXPORT_SYMBOL(class_del_profiles);
1069 * We can't call lquota_process_config directly because
1070 * it lives in a module that must be loaded after this one.
1072 #ifdef HAVE_SERVER_SUPPORT
1073 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
1074 #endif /* HAVE_SERVER_SUPPORT */
1077 * Rename the proc parameter in \a cfg with a new name \a new_name.
1079 * \param cfg config structure which contains the proc parameter
1080 * \param new_name new name of the proc parameter
1082 * \retval valid-pointer pointer to the newly-allocated config structure
1083 * which contains the renamed proc parameter
1084 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
1085 * not contain a proc parameter
1086 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
1088 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
1089 const char *new_name)
1091 struct lustre_cfg_bufs *bufs = NULL;
1092 struct lustre_cfg *new_cfg = NULL;
1094 char *new_param = NULL;
1101 if (!cfg || !new_name)
1102 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1104 param = lustre_cfg_string(cfg, 1);
1106 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1108 value = strchr(param, '=');
1110 name_len = value - param;
1112 name_len = strlen(param);
1114 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1116 OBD_ALLOC(new_param, new_len);
1118 GOTO(out_nocfg, new_cfg = ERR_PTR(-ENOMEM));
1120 strlcpy(new_param, new_name, new_len);
1122 strcat(new_param, value);
1124 OBD_ALLOC_PTR(bufs);
1126 GOTO(out_free_param, new_cfg = ERR_PTR(-ENOMEM));
1128 lustre_cfg_bufs_reset(bufs, NULL);
1129 lustre_cfg_bufs_init(bufs, cfg);
1130 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1132 OBD_ALLOC(new_cfg, lustre_cfg_len(bufs->lcfg_bufcount,
1133 bufs->lcfg_buflen));
1135 GOTO(out_free_buf, new_cfg = ERR_PTR(-ENOMEM));
1137 lustre_cfg_init(new_cfg, cfg->lcfg_command, bufs);
1139 new_cfg->lcfg_num = cfg->lcfg_num;
1140 new_cfg->lcfg_flags = cfg->lcfg_flags;
1141 new_cfg->lcfg_nid = cfg->lcfg_nid;
1142 new_cfg->lcfg_nal = cfg->lcfg_nal;
1146 OBD_FREE(new_param, new_len);
1150 EXPORT_SYMBOL(lustre_cfg_rename);
1152 static ssize_t process_param2_config(struct lustre_cfg *lcfg)
1154 char *param = lustre_cfg_string(lcfg, 1);
1155 char *upcall = lustre_cfg_string(lcfg, 2);
1156 struct kobject *kobj = NULL;
1157 const char *subsys = param;
1159 [0] = "/usr/sbin/lctl",
1170 print_lustre_cfg(lcfg);
1172 len = strcspn(param, ".=");
1176 /* If we find '=' then its the top level sysfs directory */
1177 if (param[len] == '=')
1178 return class_set_global(param);
1180 subsys = kstrndup(param, len, GFP_KERNEL);
1184 kobj = kset_find_obj(lustre_kset, subsys);
1187 char *value = param;
1191 param = strsep(&value, "=");
1192 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s", param);
1193 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1194 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1195 ktime_get_real_seconds());
1198 rc = kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
1199 for (i = 0; i < ARRAY_SIZE(envp); i++)
1207 /* Add upcall processing here. Now only lctl is supported */
1208 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1209 CERROR("Unsupported upcall %s\n", upcall);
1213 start = ktime_get();
1214 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1218 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1219 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1220 (long)ktime_us_delta(end, start));
1222 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1223 argv[0], argv[1], argv[2],
1224 (long)ktime_us_delta(end, start));
1231 #ifdef HAVE_SERVER_SUPPORT
1232 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1234 quota_process_config = qpc;
1236 EXPORT_SYMBOL(lustre_register_quota_process_config);
1237 #endif /* HAVE_SERVER_SUPPORT */
1240 * Process configuration commands given in lustre_cfg form.
1241 * These may come from direct calls (e.g. class_manual_cleanup)
1242 * or processing the config llog, or ioctl from lctl.
1244 int class_process_config(struct lustre_cfg *lcfg)
1246 struct obd_device *obd;
1249 LASSERT(lcfg && !IS_ERR(lcfg));
1250 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1252 /* Commands that don't need a device */
1253 switch (lcfg->lcfg_command) {
1255 err = class_attach(lcfg);
1258 case LCFG_ADD_UUID: {
1260 "adding mapping from uuid %s to nid %#llx (%s)\n",
1261 lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid,
1262 libcfs_nid2str(lcfg->lcfg_nid));
1264 err = class_add_uuid(lustre_cfg_string(lcfg, 1),
1268 case LCFG_DEL_UUID: {
1269 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1270 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) ==
1271 0) ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1273 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1276 case LCFG_MOUNTOPT: {
1277 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1278 lustre_cfg_string(lcfg, 1),
1279 lustre_cfg_string(lcfg, 2),
1280 lustre_cfg_string(lcfg, 3));
1282 * set these mount options somewhere, so ll_fill_super
1285 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1286 lustre_cfg_string(lcfg, 1),
1287 LUSTRE_CFG_BUFLEN(lcfg, 2),
1288 lustre_cfg_string(lcfg, 2),
1289 LUSTRE_CFG_BUFLEN(lcfg, 3),
1290 lustre_cfg_string(lcfg, 3));
1293 case LCFG_DEL_MOUNTOPT: {
1294 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1295 lustre_cfg_string(lcfg, 1));
1296 class_del_profile(lustre_cfg_string(lcfg, 1));
1299 case LCFG_SET_TIMEOUT: {
1300 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1301 obd_timeout, lcfg->lcfg_num);
1302 obd_timeout = max(lcfg->lcfg_num, 1U);
1303 obd_timeout_set = 1;
1306 case LCFG_SET_LDLM_TIMEOUT: {
1307 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1308 ldlm_timeout, lcfg->lcfg_num);
1309 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1310 if (ldlm_timeout >= obd_timeout)
1311 ldlm_timeout = max(obd_timeout / 3, 1U);
1312 ldlm_timeout_set = 1;
1315 case LCFG_SET_UPCALL: {
1316 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1317 /* COMPAT_146 Don't fail on old configs */
1321 struct cfg_marker *marker;
1323 marker = lustre_cfg_buf(lcfg, 1);
1324 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1325 marker->cm_flags, marker->cm_tgtname,
1326 marker->cm_comment);
1332 /* llite has no OBD */
1333 if (class_match_param(lustre_cfg_string(lcfg, 1),
1334 PARAM_LLITE, NULL) == 0) {
1335 struct lustre_sb_info *lsi;
1340 * The instance name contains the sb:
1341 * lustre-client-aacfe000
1343 tmp = strrchr(lustre_cfg_string(lcfg, 0), '-');
1344 if (!tmp || !*(++tmp))
1345 GOTO(out, err = -EINVAL);
1347 if (sscanf(tmp, "%lx", &addr) != 1)
1348 GOTO(out, err = -EINVAL);
1350 lsi = s2lsi((struct super_block *)addr);
1351 /* This better be a real Lustre superblock! */
1352 LASSERT(lsi->lsi_lmd->lmd_magic == LMD_MAGIC);
1354 count = class_modify_config(lcfg, PARAM_LLITE,
1356 err = count < 0 ? count : 0;
1358 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1359 PARAM_SYS, &tmp) == 0)) {
1360 /* Global param settings */
1361 err = class_set_global(tmp);
1363 * Client or server should not fail to mount if
1364 * it hits an unknown configuration parameter.
1367 CWARN("Ignoring unknown param %s\n", tmp);
1370 #ifdef HAVE_SERVER_SUPPORT
1371 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1372 PARAM_QUOTA, &tmp) == 0) &&
1373 quota_process_config) {
1374 err = (*quota_process_config)(lcfg);
1376 #endif /* HAVE_SERVER_SUPPORT */
1381 case LCFG_SET_PARAM: {
1382 err = process_param2_config(lcfg);
1386 /* Commands that require a device */
1387 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1389 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1390 CERROR("this lcfg command requires a device name\n");
1392 CERROR("no device for: %s\n",
1393 lustre_cfg_string(lcfg, 0));
1395 GOTO(out, err = -EINVAL);
1397 switch(lcfg->lcfg_command) {
1399 err = class_setup(obd, lcfg);
1403 err = class_detach(obd, lcfg);
1406 case LCFG_CLEANUP: {
1407 err = class_cleanup(obd, lcfg);
1410 case LCFG_ADD_CONN: {
1411 err = class_add_conn(obd, lcfg);
1414 case LCFG_DEL_CONN: {
1415 err = class_del_conn(obd, lcfg);
1418 case LCFG_POOL_NEW: {
1419 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1422 case LCFG_POOL_ADD: {
1423 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1424 lustre_cfg_string(lcfg, 3));
1427 case LCFG_POOL_REM: {
1428 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1429 lustre_cfg_string(lcfg, 3));
1432 case LCFG_POOL_DEL: {
1433 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1437 * Process config log ADD_MDC record twice to add MDC also to LOV
1440 * add 0:lustre-clilmv 1:lustre-MDT0000_UUID 2:0 3:1
1441 * 4:lustre-MDT0000-mdc_UUID
1443 case LCFG_ADD_MDC: {
1444 struct obd_device *lov_obd;
1447 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1451 /* make sure this is client LMV log entry */
1452 clilmv = strstr(lustre_cfg_string(lcfg, 0), "clilmv");
1457 * replace 'lmv' with 'lov' name to address LOV device and
1458 * process llog record to add MDC there.
1461 lov_obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1463 err = obd_process_config(lov_obd, sizeof(*lcfg), lcfg);
1466 CERROR("%s: Cannot find LOV by %s name, rc = %d\n",
1467 obd->obd_name, lustre_cfg_string(lcfg, 0), err);
1469 /* restore 'lmv' name */
1474 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1480 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1481 CWARN("Ignoring error %d on optional command %#x\n", err,
1482 lcfg->lcfg_command);
1487 EXPORT_SYMBOL(class_process_config);
1489 ssize_t class_modify_config(struct lustre_cfg *lcfg, const char *prefix,
1490 struct kobject *kobj)
1492 struct kobj_type *typ;
1496 if (lcfg->lcfg_command != LCFG_PARAM) {
1497 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1501 typ = get_ktype(kobj);
1502 if (!typ || !typ->default_attrs)
1505 print_lustre_cfg(lcfg);
1508 * e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1509 * or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1510 * or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36
1512 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1513 struct attribute *attr;
1519 key = lustre_cfg_buf(lcfg, i);
1520 /* Strip off prefix */
1521 if (class_match_param(key, prefix, &key))
1523 * If the prefix doesn't match, return error so we
1524 * can pass it down the stack
1528 value = strchr(key, '=');
1529 if (!value || *(value + 1) == 0) {
1530 CERROR("%s: can't parse param '%s' (missing '=')\n",
1531 lustre_cfg_string(lcfg, 0),
1532 lustre_cfg_string(lcfg, i));
1533 /* continue parsing other params */
1536 keylen = value - key;
1540 for (j = 0; typ->default_attrs[j]; j++) {
1541 if (!strncmp(typ->default_attrs[j]->name, key,
1543 attr = typ->default_attrs[j];
1549 char *envp[4], *param, *path;
1551 path = kobject_get_path(kobj, GFP_KERNEL);
1555 /* convert sysfs path to uevent format */
1557 while ((param = strchr(param, '/')) != NULL)
1560 param = strstr(path, "fs.lustre.") + 10;
1562 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s.%.*s",
1563 param, (int) keylen, key);
1564 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1565 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1566 ktime_get_real_seconds());
1569 if (kobject_uevent_env(kobj, KOBJ_CHANGE, envp)) {
1570 CERROR("%s: failed to send uevent %s\n",
1571 kobject_name(kobj), key);
1574 for (i = 0; i < ARRAY_SIZE(envp); i++)
1578 count += lustre_attr_store(kobj, attr, value,
1584 EXPORT_SYMBOL(class_modify_config);
1587 * Supplemental functions for config logs, it allocates lustre_cfg
1588 * buffers plus initialized llog record header at the beginning.
1590 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1592 struct llog_cfg_rec *lcr;
1597 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1598 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1599 sizeof(struct llog_rec_tail);
1601 OBD_ALLOC(lcr, reclen);
1605 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1607 lcr->lcr_hdr.lrh_len = reclen;
1608 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1612 EXPORT_SYMBOL(lustre_cfg_rec_new);
1614 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1617 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1620 EXPORT_SYMBOL(lustre_cfg_rec_free);
1623 * Parse a configuration llog, doing various manipulations on them
1624 * for various reasons, (modifications for compatibility, skip obsolete
1625 * records, change uuids, etc), then class_process_config() resulting
1628 int class_config_llog_handler(const struct lu_env *env,
1629 struct llog_handle *handle,
1630 struct llog_rec_hdr *rec, void *data)
1632 struct config_llog_instance *cfg = data;
1633 int cfg_len = rec->lrh_len;
1634 char *cfg_buf = (char *) (rec + 1);
1638 /* class_config_dump_handler(handle, rec, data); */
1640 switch (rec->lrh_type) {
1642 struct lustre_cfg *lcfg, *lcfg_new;
1643 struct lustre_cfg_bufs bufs;
1644 char *inst_name = NULL;
1648 lcfg = (struct lustre_cfg *)cfg_buf;
1649 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1650 lustre_swab_lustre_cfg(lcfg);
1654 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1658 /* Figure out config state info */
1659 if (lcfg->lcfg_command == LCFG_MARKER) {
1660 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1661 lustre_swab_cfg_marker(marker, swab,
1662 LUSTRE_CFG_BUFLEN(lcfg, 1));
1663 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1664 cfg->cfg_flags, marker->cm_flags);
1665 if (marker->cm_flags & CM_START) {
1666 /* all previous flags off */
1667 cfg->cfg_flags = CFG_F_MARKER;
1668 server_name2index(marker->cm_tgtname,
1669 &cfg->cfg_lwp_idx, NULL);
1670 if (marker->cm_flags & CM_SKIP) {
1671 cfg->cfg_flags |= CFG_F_SKIP;
1672 CDEBUG(D_CONFIG, "SKIP #%d\n",
1674 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1676 lustre_check_exclusion(cfg->cfg_sb,
1677 marker->cm_tgtname))) {
1678 cfg->cfg_flags |= CFG_F_EXCLUDE;
1679 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1682 } else if (marker->cm_flags & CM_END) {
1687 * A config command without a start marker before it is
1690 if (!(cfg->cfg_flags & CFG_F_MARKER) &&
1691 (lcfg->lcfg_command != LCFG_MARKER)) {
1692 CWARN("Skip config outside markers, (inst: %016lx, uuid: %s, flags: %#x)\n",
1694 cfg->cfg_uuid.uuid, cfg->cfg_flags);
1695 cfg->cfg_flags |= CFG_F_SKIP;
1697 if (cfg->cfg_flags & CFG_F_SKIP) {
1698 CDEBUG(D_CONFIG, "skipping %#x\n",
1701 /* No processing! */
1706 * For interoperability between 1.8 and 2.0,
1707 * rename "mds" OBD device type to "mdt".
1710 char *typename = lustre_cfg_string(lcfg, 1);
1711 char *index = lustre_cfg_string(lcfg, 2);
1713 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1714 strcmp(typename, "mds") == 0)) {
1715 CWARN("For 1.8 interoperability, rename obd "
1716 "type from mds to mdt\n");
1719 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1720 strcmp(index, "type") == 0)) {
1721 CDEBUG(D_INFO, "For 1.8 interoperability, "
1722 "set this index to '0'\n");
1728 #ifdef HAVE_SERVER_SUPPORT
1729 /* newer MDS replaces LOV/OSC with LOD/OSP */
1730 if ((lcfg->lcfg_command == LCFG_ATTACH ||
1731 lcfg->lcfg_command == LCFG_SET_PARAM ||
1732 lcfg->lcfg_command == LCFG_PARAM) &&
1733 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1734 char *typename = lustre_cfg_string(lcfg, 1);
1737 strcmp(typename, LUSTRE_LOV_NAME) == 0) {
1739 "For 2.x interoperability, rename obd "
1740 "type from lov to lod (%s)\n",
1741 s2lsi(cfg->cfg_sb)->lsi_svname);
1742 strcpy(typename, LUSTRE_LOD_NAME);
1745 strcmp(typename, LUSTRE_OSC_NAME) == 0) {
1747 "For 2.x interoperability, rename obd "
1748 "type from osc to osp (%s)\n",
1749 s2lsi(cfg->cfg_sb)->lsi_svname);
1750 strcpy(typename, LUSTRE_OSP_NAME);
1753 #endif /* HAVE_SERVER_SUPPORT */
1755 if (cfg->cfg_flags & CFG_F_EXCLUDE) {
1756 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1757 lcfg->lcfg_command);
1758 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1759 /* Add inactive instead */
1760 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1763 lustre_cfg_bufs_reset(&bufs, NULL);
1764 lustre_cfg_bufs_init(&bufs, lcfg);
1766 if (cfg->cfg_instance &&
1767 lcfg->lcfg_command != LCFG_SPTLRPC_CONF &&
1768 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1769 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1770 LUSTRE_MAXINSTANCE + 4;
1771 OBD_ALLOC(inst_name, inst_len);
1773 GOTO(out, rc = -ENOMEM);
1774 snprintf(inst_name, inst_len, "%s-%016lx",
1775 lustre_cfg_string(lcfg, 0),
1777 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1778 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1779 lcfg->lcfg_command, inst_name);
1782 /* override llog UUID for clients, to insure they are unique */
1783 if (cfg->cfg_instance && lcfg->lcfg_command == LCFG_ATTACH)
1784 lustre_cfg_bufs_set_string(&bufs, 2,
1785 cfg->cfg_uuid.uuid);
1787 * sptlrpc config record, we expect 2 data segments:
1788 * [0]: fs_name/target_name,
1790 * moving them to index [1] and [2], and insert MGC's
1791 * obdname at index [0].
1793 if (cfg->cfg_instance &&
1794 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1795 /* After ASLR changes cfg_instance this needs fixing */
1796 /* "obd" is set in config_log_find_or_add() */
1797 struct obd_device *obd = (void *)cfg->cfg_instance;
1799 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1800 bufs.lcfg_buflen[1]);
1801 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1802 bufs.lcfg_buflen[0]);
1803 lustre_cfg_bufs_set_string(&bufs, 0,
1808 * Add net info to setup command
1809 * if given on command line.
1810 * So config log will be:
1814 * [3]: inactive-on-startup
1815 * [4]: restrictive net
1817 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1818 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1819 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1820 char *nidnet = lsi->lsi_lmd->lmd_nidnet;
1822 if (lcfg->lcfg_command == LCFG_SETUP &&
1823 lcfg->lcfg_bufcount != 2 && nidnet) {
1824 CDEBUG(D_CONFIG, "Adding net %s info to setup "
1825 "command for client %s\n", nidnet,
1826 lustre_cfg_string(lcfg, 0));
1827 lustre_cfg_bufs_set_string(&bufs, 4, nidnet);
1832 * Skip add_conn command if uuid is
1833 * not on restricted net
1835 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1836 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1837 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1838 char *uuid_str = lustre_cfg_string(lcfg, 1);
1840 if (lcfg->lcfg_command == LCFG_ADD_CONN &&
1841 lsi->lsi_lmd->lmd_nidnet &&
1842 LNET_NIDNET(libcfs_str2nid(uuid_str)) !=
1843 libcfs_str2net(lsi->lsi_lmd->lmd_nidnet)) {
1844 CDEBUG(D_CONFIG, "skipping add_conn for %s\n",
1847 /* No processing! */
1852 OBD_ALLOC(lcfg_new, lustre_cfg_len(bufs.lcfg_bufcount,
1855 GOTO(out, rc = -ENOMEM);
1857 lustre_cfg_init(lcfg_new, lcfg->lcfg_command, &bufs);
1858 lcfg_new->lcfg_num = lcfg->lcfg_num;
1859 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1862 * XXX Hack to try to remain binary compatible with
1863 * pre-newconfig logs
1865 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1866 (lcfg->lcfg_nid >> 32) == 0) {
1867 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1869 lcfg_new->lcfg_nid =
1870 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1871 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1872 lcfg->lcfg_nal, addr,
1873 libcfs_nid2str(lcfg_new->lcfg_nid));
1875 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1878 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1880 rc = class_process_config(lcfg_new);
1881 OBD_FREE(lcfg_new, lustre_cfg_len(lcfg_new->lcfg_bufcount,
1882 lcfg_new->lcfg_buflens));
1884 OBD_FREE(inst_name, inst_len);
1888 CERROR("Unknown llog record type %#x encountered\n",
1894 CERROR("%s: cfg command failed: rc = %d\n",
1895 handle->lgh_ctxt->loc_obd->obd_name, rc);
1896 class_config_dump_handler(NULL, handle, rec, data);
1900 EXPORT_SYMBOL(class_config_llog_handler);
1902 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1903 char *name, struct config_llog_instance *cfg)
1905 struct llog_process_cat_data cd = {
1906 .lpcd_first_idx = 0,
1908 struct llog_handle *llh;
1913 CDEBUG(D_INFO, "looking up llog %s\n", name);
1914 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1918 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1920 GOTO(parse_out, rc);
1922 /* continue processing from where we last stopped to end-of-log */
1924 cd.lpcd_first_idx = cfg->cfg_last_idx;
1925 callback = cfg->cfg_callback;
1926 LASSERT(callback != NULL);
1928 callback = class_config_llog_handler;
1931 cd.lpcd_last_idx = 0;
1933 rc = llog_process(env, llh, callback, cfg, &cd);
1935 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1936 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1938 cfg->cfg_last_idx = cd.lpcd_last_idx;
1941 llog_close(env, llh);
1944 EXPORT_SYMBOL(class_config_parse_llog);
1947 * Parse config record and output dump in supplied buffer.
1949 * This is separated from class_config_dump_handler() to use
1950 * for ioctl needs as well
1953 * - { index: 4, event: attach, device: lustrewt-clilov, type: lov,
1954 * UUID: lustrewt-clilov_UUID }
1956 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size)
1958 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1960 char *end = buf + size;
1962 struct lcfg_type_data *ldata;
1964 LASSERT(rec->lrh_type == OBD_CFG_REC);
1965 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1969 ldata = lcfg_cmd2data(lcfg->lcfg_command);
1973 if (lcfg->lcfg_command == LCFG_MARKER)
1976 /* form YAML entity */
1977 ptr += snprintf(ptr, end - ptr, "- { index: %u, event: %s",
1978 rec->lrh_index, ldata->ltd_name);
1982 if (lcfg->lcfg_flags) {
1983 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
1988 if (lcfg->lcfg_num) {
1989 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
1994 if (lcfg->lcfg_nid) {
1995 char nidstr[LNET_NIDSTR_SIZE];
1997 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1998 ptr += snprintf(ptr, end - ptr, ", nid: %s(%#llx)",
1999 nidstr, lcfg->lcfg_nid);
2004 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
2005 ptr += snprintf(ptr, end - ptr, ", device: %s",
2006 lustre_cfg_string(lcfg, 0));
2011 if (lcfg->lcfg_command == LCFG_SET_PARAM) {
2013 * set_param -P parameters have param=val here, separate
2014 * them through pointer magic and print them out in
2017 char *cfg_str = lustre_cfg_string(lcfg, 1);
2018 char *tmp = strchr(cfg_str, '=');
2024 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[0]);
2025 len = tmp - cfg_str + 1;
2026 snprintf(ptr, len, "%s", cfg_str);
2029 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[1]);
2030 ptr += snprintf(ptr, end - ptr, "%s", tmp + 1);
2035 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
2036 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0) {
2037 ptr += snprintf(ptr, end - ptr, ", %s: %s",
2038 ldata->ltd_bufs[i - 1],
2039 lustre_cfg_string(lcfg, i));
2046 ptr += snprintf(ptr, end - ptr, " }\n");
2048 /* Return consumed bytes. If the buffer overflowed, zero last byte */
2059 * parse config record and output dump in supplied buffer.
2060 * This is separated from class_config_dump_handler() to use
2061 * for ioctl needs as well
2063 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
2065 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2067 char *end = buf + size;
2072 LASSERT(rec->lrh_type == OBD_CFG_REC);
2073 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2077 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
2078 if (lcfg->lcfg_flags)
2079 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
2083 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
2085 if (lcfg->lcfg_nid) {
2086 char nidstr[LNET_NIDSTR_SIZE];
2088 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2089 ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx) ",
2090 nidstr, lcfg->lcfg_nid);
2093 if (lcfg->lcfg_command == LCFG_MARKER) {
2094 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
2096 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
2097 marker->cm_step, marker->cm_flags,
2098 marker->cm_tgtname, marker->cm_comment);
2102 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
2103 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
2104 lustre_cfg_string(lcfg, i));
2107 ptr += snprintf(ptr, end - ptr, "\n");
2108 /* return consumed bytes */
2113 int class_config_dump_handler(const struct lu_env *env,
2114 struct llog_handle *handle,
2115 struct llog_rec_hdr *rec, void *data)
2122 OBD_ALLOC(outstr, 256);
2126 if (rec->lrh_type == OBD_CFG_REC) {
2127 class_config_parse_rec(rec, outstr, 256);
2128 LCONSOLE(D_WARNING, " %s\n", outstr);
2130 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
2134 OBD_FREE(outstr, 256);
2139 * Call class_cleanup and class_detach.
2140 * "Manual" only in the sense that we're faking lcfg commands.
2142 int class_manual_cleanup(struct obd_device *obd)
2145 struct lustre_cfg *lcfg;
2146 struct lustre_cfg_bufs bufs;
2152 CERROR("empty cleanup\n");
2157 strlcat(flags, "F", sizeof(flags));
2159 strlcat(flags, "A", sizeof(flags));
2161 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
2162 obd->obd_name, flags);
2164 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
2165 lustre_cfg_bufs_set_string(&bufs, 1, flags);
2166 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
2169 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
2171 rc = class_process_config(lcfg);
2173 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
2177 /* the lcfg is almost the same for both ops */
2178 lcfg->lcfg_command = LCFG_DETACH;
2179 rc = class_process_config(lcfg);
2181 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
2183 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
2186 EXPORT_SYMBOL(class_manual_cleanup);
2189 * nid<->export hash operations
2192 nid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2194 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
2198 nid_key(struct hlist_node *hnode)
2200 struct obd_export *exp;
2202 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2204 RETURN(&exp->exp_connection->c_peer.nid);
2208 * NOTE: It is impossible to find an export that is in failed
2209 * state with this function
2212 nid_kepcmp(const void *key, struct hlist_node *hnode)
2214 struct obd_export *exp;
2217 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2219 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
2224 nid_export_object(struct hlist_node *hnode)
2226 return hlist_entry(hnode, struct obd_export, exp_nid_hash);
2230 nid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2232 struct obd_export *exp;
2234 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2235 class_export_get(exp);
2239 nid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2241 struct obd_export *exp;
2243 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2244 class_export_put(exp);
2247 static struct cfs_hash_ops nid_hash_ops = {
2248 .hs_hash = nid_hash,
2250 .hs_keycmp = nid_kepcmp,
2251 .hs_object = nid_export_object,
2252 .hs_get = nid_export_get,
2253 .hs_put_locked = nid_export_put_locked,
2258 * nid<->nidstats hash operations
2262 nidstats_key(struct hlist_node *hnode)
2264 struct nid_stat *ns;
2266 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2272 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2274 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
2278 nidstats_object(struct hlist_node *hnode)
2280 return hlist_entry(hnode, struct nid_stat, nid_hash);
2284 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2286 struct nid_stat *ns;
2288 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2293 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2295 struct nid_stat *ns;
2297 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2301 static struct cfs_hash_ops nid_stat_hash_ops = {
2302 .hs_hash = nid_hash,
2303 .hs_key = nidstats_key,
2304 .hs_keycmp = nidstats_keycmp,
2305 .hs_object = nidstats_object,
2306 .hs_get = nidstats_get,
2307 .hs_put_locked = nidstats_put_locked,
2312 * client_generation<->export hash operations
2316 gen_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2318 return cfs_hash_djb2_hash(key, sizeof(__u32), mask);
2322 gen_key(struct hlist_node *hnode)
2324 struct obd_export *exp;
2326 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2328 RETURN(&exp->exp_target_data.ted_lcd->lcd_generation);
2332 * NOTE: It is impossible to find an export that is in failed
2333 * state with this function
2336 gen_kepcmp(const void *key, struct hlist_node *hnode)
2338 struct obd_export *exp;
2341 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2343 RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key &&
2348 gen_export_object(struct hlist_node *hnode)
2350 return hlist_entry(hnode, struct obd_export, exp_gen_hash);
2354 gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2356 struct obd_export *exp;
2358 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2359 class_export_get(exp);
2363 gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2365 struct obd_export *exp;
2367 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2368 class_export_put(exp);
2371 static struct cfs_hash_ops gen_hash_ops = {
2372 .hs_hash = gen_hash,
2374 .hs_keycmp = gen_kepcmp,
2375 .hs_object = gen_export_object,
2376 .hs_get = gen_export_get,
2377 .hs_put_locked = gen_export_put_locked,