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",
750 spin_lock(&obd->obd_dev_lock);
752 #ifdef HAVE_SERVER_SUPPORT
753 obd->obd_no_transno = 1;
755 obd->obd_no_recov = 1;
756 spin_unlock(&obd->obd_dev_lock);
757 if (OBP(obd, iocontrol)) {
758 obd_iocontrol(OBD_IOC_SYNC,
759 obd->obd_self_export,
764 CERROR("Unrecognised flag '%c'\n", *flag);
768 LASSERT(obd->obd_self_export);
770 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d/%d\n",
771 obd->obd_name, obd->obd_num_exports,
772 atomic_read(&obd->obd_refcount) - 2);
773 dump_exports(obd, 0, D_HA);
774 class_disconnect_exports(obd);
776 /* Precleanup, we must make sure all exports get destroyed. */
777 err = obd_precleanup(obd);
779 CERROR("Precleanup %s returned %d\n",
782 /* destroy an uuid-export hash body */
783 rhashtable_free_and_destroy(&obd->obd_uuid_hash, obd_export_exit,
786 /* destroy a nid-export hash body */
787 if (obd->obd_nid_hash) {
788 cfs_hash_putref(obd->obd_nid_hash);
789 obd->obd_nid_hash = NULL;
792 /* destroy a nid-stats hash body */
793 if (obd->obd_nid_stats_hash) {
794 cfs_hash_putref(obd->obd_nid_stats_hash);
795 obd->obd_nid_stats_hash = NULL;
798 /* destroy a client_generation-export hash body */
799 if (obd->obd_gen_hash) {
800 cfs_hash_putref(obd->obd_gen_hash);
801 obd->obd_gen_hash = NULL;
804 class_decref(obd, "setup", obd);
810 struct obd_device *class_incref(struct obd_device *obd,
814 lu_ref_add_atomic(&obd->obd_reference, scope, source);
815 atomic_inc(&obd->obd_refcount);
816 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
817 atomic_read(&obd->obd_refcount));
821 EXPORT_SYMBOL(class_incref);
823 void class_decref(struct obd_device *obd, const char *scope, const void *source)
827 CDEBUG(D_INFO, "Decref %s (%p) now %d - %s\n", obd->obd_name, obd,
828 atomic_read(&obd->obd_refcount), scope);
830 LASSERT(obd->obd_num_exports >= 0);
831 last = atomic_dec_and_test(&obd->obd_refcount);
832 lu_ref_del(&obd->obd_reference, scope, source);
835 struct obd_export *exp;
837 LASSERT(!obd->obd_attached);
839 * All exports have been destroyed; there should
840 * be no more in-progress ops by this point.
842 exp = obd->obd_self_export;
845 exp->exp_flags |= exp_flags_from_obd(obd);
846 class_unlink_export(exp);
850 EXPORT_SYMBOL(class_decref);
853 * Add a failover NID location.
854 * Client OBD types contact server OBD types using this NID list.
856 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
858 struct obd_import *imp;
859 struct obd_uuid uuid;
864 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
865 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
866 CERROR("invalid conn_uuid\n");
869 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
870 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
871 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
872 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
873 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
874 CERROR("can't add connection on non-client dev\n");
878 imp = obd->u.cli.cl_import;
880 CERROR("try to add conn on immature client dev\n");
884 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
885 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
890 /** Remove a failover NID location. */
891 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
893 struct obd_import *imp;
894 struct obd_uuid uuid;
899 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
900 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
901 CERROR("invalid conn_uuid\n");
904 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
905 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
906 CERROR("can't del connection on non-client dev\n");
910 imp = obd->u.cli.cl_import;
912 CERROR("try to del conn on immature client dev\n");
916 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
917 rc = obd_del_conn(imp, &uuid);
922 static LIST_HEAD(lustre_profile_list);
923 static DEFINE_SPINLOCK(lustre_profile_list_lock);
925 struct lustre_profile *class_get_profile(const char *prof)
927 struct lustre_profile *lprof;
930 spin_lock(&lustre_profile_list_lock);
931 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
932 if (!strcmp(lprof->lp_profile, prof)) {
934 spin_unlock(&lustre_profile_list_lock);
938 spin_unlock(&lustre_profile_list_lock);
941 EXPORT_SYMBOL(class_get_profile);
944 * Create a named "profile".
945 * This defines the MDC and OSC names to use for a client.
946 * This also is used to define the LOV to be used by a MDT.
948 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
949 int mdclen, char *mdc)
951 struct lustre_profile *lprof;
956 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
958 OBD_ALLOC(lprof, sizeof(*lprof));
961 INIT_LIST_HEAD(&lprof->lp_list);
963 LASSERT(proflen == (strlen(prof) + 1));
964 OBD_ALLOC(lprof->lp_profile, proflen);
965 if (!lprof->lp_profile)
966 GOTO(out, err = -ENOMEM);
967 memcpy(lprof->lp_profile, prof, proflen);
969 LASSERT(osclen == (strlen(osc) + 1));
970 OBD_ALLOC(lprof->lp_dt, osclen);
972 GOTO(out, err = -ENOMEM);
973 memcpy(lprof->lp_dt, osc, osclen);
976 LASSERT(mdclen == (strlen(mdc) + 1));
977 OBD_ALLOC(lprof->lp_md, mdclen);
979 GOTO(out, err = -ENOMEM);
980 memcpy(lprof->lp_md, mdc, mdclen);
983 spin_lock(&lustre_profile_list_lock);
985 lprof->lp_list_deleted = false;
987 list_add(&lprof->lp_list, &lustre_profile_list);
988 spin_unlock(&lustre_profile_list_lock);
993 OBD_FREE(lprof->lp_md, mdclen);
995 OBD_FREE(lprof->lp_dt, osclen);
996 if (lprof->lp_profile)
997 OBD_FREE(lprof->lp_profile, proflen);
998 OBD_FREE(lprof, sizeof(*lprof));
1002 void class_del_profile(const char *prof)
1004 struct lustre_profile *lprof;
1008 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
1010 lprof = class_get_profile(prof);
1012 spin_lock(&lustre_profile_list_lock);
1013 /* because get profile increments the ref counter */
1015 list_del(&lprof->lp_list);
1016 lprof->lp_list_deleted = true;
1017 spin_unlock(&lustre_profile_list_lock);
1019 class_put_profile(lprof);
1023 EXPORT_SYMBOL(class_del_profile);
1025 void class_put_profile(struct lustre_profile *lprof)
1027 spin_lock(&lustre_profile_list_lock);
1028 if ((--lprof->lp_refs) > 0) {
1029 LASSERT(lprof->lp_refs > 0);
1030 spin_unlock(&lustre_profile_list_lock);
1033 spin_unlock(&lustre_profile_list_lock);
1035 /* confirm not a negative number */
1036 LASSERT(lprof->lp_refs == 0);
1039 * At least one class_del_profile/profiles must be called
1040 * on the target profile or lustre_profile_list will corrupt
1042 LASSERT(lprof->lp_list_deleted);
1043 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
1044 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
1046 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
1047 OBD_FREE(lprof, sizeof(*lprof));
1049 EXPORT_SYMBOL(class_put_profile);
1052 void class_del_profiles(void)
1054 struct lustre_profile *lprof, *n;
1057 spin_lock(&lustre_profile_list_lock);
1058 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
1059 list_del(&lprof->lp_list);
1060 lprof->lp_list_deleted = true;
1061 spin_unlock(&lustre_profile_list_lock);
1063 class_put_profile(lprof);
1065 spin_lock(&lustre_profile_list_lock);
1067 spin_unlock(&lustre_profile_list_lock);
1070 EXPORT_SYMBOL(class_del_profiles);
1073 * We can't call lquota_process_config directly because
1074 * it lives in a module that must be loaded after this one.
1076 #ifdef HAVE_SERVER_SUPPORT
1077 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
1078 #endif /* HAVE_SERVER_SUPPORT */
1081 * Rename the proc parameter in \a cfg with a new name \a new_name.
1083 * \param cfg config structure which contains the proc parameter
1084 * \param new_name new name of the proc parameter
1086 * \retval valid-pointer pointer to the newly-allocated config structure
1087 * which contains the renamed proc parameter
1088 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
1089 * not contain a proc parameter
1090 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
1092 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
1093 const char *new_name)
1095 struct lustre_cfg_bufs *bufs = NULL;
1096 struct lustre_cfg *new_cfg = NULL;
1098 char *new_param = NULL;
1105 if (!cfg || !new_name)
1106 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1108 param = lustre_cfg_string(cfg, 1);
1110 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
1112 value = strchr(param, '=');
1114 name_len = value - param;
1116 name_len = strlen(param);
1118 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1120 OBD_ALLOC(new_param, new_len);
1122 GOTO(out_nocfg, new_cfg = ERR_PTR(-ENOMEM));
1124 strlcpy(new_param, new_name, new_len);
1126 strcat(new_param, value);
1128 OBD_ALLOC_PTR(bufs);
1130 GOTO(out_free_param, new_cfg = ERR_PTR(-ENOMEM));
1132 lustre_cfg_bufs_reset(bufs, NULL);
1133 lustre_cfg_bufs_init(bufs, cfg);
1134 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1136 OBD_ALLOC(new_cfg, lustre_cfg_len(bufs->lcfg_bufcount,
1137 bufs->lcfg_buflen));
1139 GOTO(out_free_buf, new_cfg = ERR_PTR(-ENOMEM));
1141 lustre_cfg_init(new_cfg, cfg->lcfg_command, bufs);
1143 new_cfg->lcfg_num = cfg->lcfg_num;
1144 new_cfg->lcfg_flags = cfg->lcfg_flags;
1145 new_cfg->lcfg_nid = cfg->lcfg_nid;
1146 new_cfg->lcfg_nal = cfg->lcfg_nal;
1150 OBD_FREE(new_param, new_len);
1154 EXPORT_SYMBOL(lustre_cfg_rename);
1156 static ssize_t process_param2_config(struct lustre_cfg *lcfg)
1158 char *param = lustre_cfg_string(lcfg, 1);
1159 char *upcall = lustre_cfg_string(lcfg, 2);
1160 struct kobject *kobj = NULL;
1161 const char *subsys = param;
1163 [0] = "/usr/sbin/lctl",
1174 print_lustre_cfg(lcfg);
1176 len = strcspn(param, ".=");
1180 /* If we find '=' then its the top level sysfs directory */
1181 if (param[len] == '=')
1182 return class_set_global(param);
1184 subsys = kstrndup(param, len, GFP_KERNEL);
1188 kobj = kset_find_obj(lustre_kset, subsys);
1191 char *value = param;
1195 param = strsep(&value, "=");
1196 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s", param);
1197 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1198 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1199 ktime_get_real_seconds());
1202 rc = kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
1203 for (i = 0; i < ARRAY_SIZE(envp); i++)
1211 /* Add upcall processing here. Now only lctl is supported */
1212 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1213 CERROR("Unsupported upcall %s\n", upcall);
1217 start = ktime_get();
1218 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1222 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1223 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1224 (long)ktime_us_delta(end, start));
1226 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1227 argv[0], argv[1], argv[2],
1228 (long)ktime_us_delta(end, start));
1235 #ifdef HAVE_SERVER_SUPPORT
1236 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1238 quota_process_config = qpc;
1240 EXPORT_SYMBOL(lustre_register_quota_process_config);
1241 #endif /* HAVE_SERVER_SUPPORT */
1243 #define QMT0_DEV_NAME_LEN (LUSTRE_MAXFSNAME + sizeof("-QMT0000"))
1244 static struct obd_device *obd_find_qmt0(char *obd_name)
1246 char qmt_name[QMT0_DEV_NAME_LEN];
1247 struct obd_device *qmt = NULL;
1249 if (!server_name2fsname(obd_name, qmt_name, NULL)) {
1250 strlcat(qmt_name, "-QMT0000", QMT0_DEV_NAME_LEN);
1251 qmt = class_name2obd(qmt_name);
1258 * Process configuration commands given in lustre_cfg form.
1259 * These may come from direct calls (e.g. class_manual_cleanup)
1260 * or processing the config llog, or ioctl from lctl.
1262 int class_process_config(struct lustre_cfg *lcfg)
1264 struct obd_device *obd;
1267 LASSERT(lcfg && !IS_ERR(lcfg));
1268 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1270 /* Commands that don't need a device */
1271 switch (lcfg->lcfg_command) {
1273 err = class_attach(lcfg);
1276 case LCFG_ADD_UUID: {
1278 "adding mapping from uuid %s to nid %#llx (%s)\n",
1279 lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid,
1280 libcfs_nid2str(lcfg->lcfg_nid));
1282 err = class_add_uuid(lustre_cfg_string(lcfg, 1),
1286 case LCFG_DEL_UUID: {
1287 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1288 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) ==
1289 0) ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1291 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1294 case LCFG_MOUNTOPT: {
1295 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1296 lustre_cfg_string(lcfg, 1),
1297 lustre_cfg_string(lcfg, 2),
1298 lustre_cfg_string(lcfg, 3));
1300 * set these mount options somewhere, so ll_fill_super
1303 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1304 lustre_cfg_string(lcfg, 1),
1305 LUSTRE_CFG_BUFLEN(lcfg, 2),
1306 lustre_cfg_string(lcfg, 2),
1307 LUSTRE_CFG_BUFLEN(lcfg, 3),
1308 lustre_cfg_string(lcfg, 3));
1311 case LCFG_DEL_MOUNTOPT: {
1312 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1313 lustre_cfg_string(lcfg, 1));
1314 class_del_profile(lustre_cfg_string(lcfg, 1));
1317 case LCFG_SET_TIMEOUT: {
1318 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1319 obd_timeout, lcfg->lcfg_num);
1320 obd_timeout = max(lcfg->lcfg_num, 1U);
1321 obd_timeout_set = 1;
1324 case LCFG_SET_LDLM_TIMEOUT: {
1325 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1326 ldlm_timeout, lcfg->lcfg_num);
1327 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1328 if (ldlm_timeout >= obd_timeout)
1329 ldlm_timeout = max(obd_timeout / 3, 1U);
1330 ldlm_timeout_set = 1;
1333 case LCFG_SET_UPCALL: {
1334 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1335 /* COMPAT_146 Don't fail on old configs */
1339 struct cfg_marker *marker;
1341 marker = lustre_cfg_buf(lcfg, 1);
1342 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1343 marker->cm_flags, marker->cm_tgtname,
1344 marker->cm_comment);
1350 /* llite has no OBD */
1351 if (class_match_param(lustre_cfg_string(lcfg, 1),
1352 PARAM_LLITE, NULL) == 0) {
1353 struct lustre_sb_info *lsi;
1358 * The instance name contains the sb:
1359 * lustre-client-aacfe000
1361 tmp = strrchr(lustre_cfg_string(lcfg, 0), '-');
1362 if (!tmp || !*(++tmp))
1363 GOTO(out, err = -EINVAL);
1365 if (sscanf(tmp, "%lx", &addr) != 1)
1366 GOTO(out, err = -EINVAL);
1368 lsi = s2lsi((struct super_block *)addr);
1369 /* This better be a real Lustre superblock! */
1370 LASSERT(lsi->lsi_lmd->lmd_magic == LMD_MAGIC);
1372 count = class_modify_config(lcfg, PARAM_LLITE,
1374 err = count < 0 ? count : 0;
1376 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1377 PARAM_SYS, &tmp) == 0)) {
1378 /* Global param settings */
1379 err = class_set_global(tmp);
1381 * Client or server should not fail to mount if
1382 * it hits an unknown configuration parameter.
1385 CWARN("Ignoring unknown param %s\n", tmp);
1388 #ifdef HAVE_SERVER_SUPPORT
1389 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1390 PARAM_QUOTA, &tmp) == 0) &&
1391 quota_process_config) {
1392 err = (*quota_process_config)(lcfg);
1394 #endif /* HAVE_SERVER_SUPPORT */
1399 case LCFG_SET_PARAM: {
1400 err = process_param2_config(lcfg);
1404 /* Commands that require a device */
1405 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1407 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1408 CERROR("this lcfg command requires a device name\n");
1410 CERROR("no device for: %s\n",
1411 lustre_cfg_string(lcfg, 0));
1413 GOTO(out, err = -EINVAL);
1415 switch(lcfg->lcfg_command) {
1417 err = class_setup(obd, lcfg);
1421 err = class_detach(obd, lcfg);
1424 case LCFG_CLEANUP: {
1425 err = class_cleanup(obd, lcfg);
1428 case LCFG_ADD_CONN: {
1429 err = class_add_conn(obd, lcfg);
1432 case LCFG_DEL_CONN: {
1433 err = class_del_conn(obd, lcfg);
1436 case LCFG_POOL_NEW: {
1437 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1438 if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
1439 obd = obd_find_qmt0(obd->obd_name);
1441 obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1445 case LCFG_POOL_ADD: {
1446 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1447 lustre_cfg_string(lcfg, 3));
1448 if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
1449 obd = obd_find_qmt0(obd->obd_name);
1451 obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1452 lustre_cfg_string(lcfg, 3));
1456 case LCFG_POOL_REM: {
1457 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1458 lustre_cfg_string(lcfg, 3));
1459 if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
1460 obd = obd_find_qmt0(obd->obd_name);
1462 obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1463 lustre_cfg_string(lcfg, 3));
1467 case LCFG_POOL_DEL: {
1468 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1469 if (!err && !strcmp(obd->obd_type->typ_name, LUSTRE_LOD_NAME)) {
1470 obd = obd_find_qmt0(obd->obd_name);
1472 obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1477 * Process config log ADD_MDC record twice to add MDC also to LOV
1480 * add 0:lustre-clilmv 1:lustre-MDT0000_UUID 2:0 3:1
1481 * 4:lustre-MDT0000-mdc_UUID
1483 case LCFG_ADD_MDC: {
1484 struct obd_device *lov_obd;
1487 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1491 /* make sure this is client LMV log entry */
1492 clilmv = strstr(lustre_cfg_string(lcfg, 0), "clilmv");
1497 * replace 'lmv' with 'lov' name to address LOV device and
1498 * process llog record to add MDC there.
1501 lov_obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1503 err = obd_process_config(lov_obd, sizeof(*lcfg), lcfg);
1506 CERROR("%s: Cannot find LOV by %s name, rc = %d\n",
1507 obd->obd_name, lustre_cfg_string(lcfg, 0), err);
1509 /* restore 'lmv' name */
1514 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1520 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1521 CWARN("Ignoring error %d on optional command %#x\n", err,
1522 lcfg->lcfg_command);
1527 EXPORT_SYMBOL(class_process_config);
1529 ssize_t class_modify_config(struct lustre_cfg *lcfg, const char *prefix,
1530 struct kobject *kobj)
1532 struct kobj_type *typ;
1536 if (lcfg->lcfg_command != LCFG_PARAM) {
1537 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1541 typ = get_ktype(kobj);
1542 if (!typ || !typ->default_attrs)
1545 print_lustre_cfg(lcfg);
1548 * e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1549 * or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1550 * or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36
1552 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1553 struct attribute *attr;
1559 key = lustre_cfg_buf(lcfg, i);
1560 /* Strip off prefix */
1561 if (class_match_param(key, prefix, &key))
1563 * If the prefix doesn't match, return error so we
1564 * can pass it down the stack
1568 value = strchr(key, '=');
1569 if (!value || *(value + 1) == 0) {
1570 CERROR("%s: can't parse param '%s' (missing '=')\n",
1571 lustre_cfg_string(lcfg, 0),
1572 lustre_cfg_string(lcfg, i));
1573 /* continue parsing other params */
1576 keylen = value - key;
1580 for (j = 0; typ->default_attrs[j]; j++) {
1581 if (!strncmp(typ->default_attrs[j]->name, key,
1583 attr = typ->default_attrs[j];
1589 char *envp[4], *param, *path;
1591 path = kobject_get_path(kobj, GFP_KERNEL);
1595 /* convert sysfs path to uevent format */
1597 while ((param = strchr(param, '/')) != NULL)
1600 param = strstr(path, "fs.lustre.") + 10;
1602 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s.%.*s",
1603 param, (int) keylen, key);
1604 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1605 envp[2] = kasprintf(GFP_KERNEL, "TIME=%lld",
1606 ktime_get_real_seconds());
1609 if (kobject_uevent_env(kobj, KOBJ_CHANGE, envp)) {
1610 CERROR("%s: failed to send uevent %s\n",
1611 kobject_name(kobj), key);
1614 for (i = 0; i < ARRAY_SIZE(envp); i++)
1618 count += lustre_attr_store(kobj, attr, value,
1624 EXPORT_SYMBOL(class_modify_config);
1627 * Supplemental functions for config logs, it allocates lustre_cfg
1628 * buffers plus initialized llog record header at the beginning.
1630 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1632 struct llog_cfg_rec *lcr;
1637 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1638 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1639 sizeof(struct llog_rec_tail);
1641 OBD_ALLOC(lcr, reclen);
1645 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1647 lcr->lcr_hdr.lrh_len = reclen;
1648 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1652 EXPORT_SYMBOL(lustre_cfg_rec_new);
1654 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1657 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1660 EXPORT_SYMBOL(lustre_cfg_rec_free);
1663 * Parse a configuration llog, doing various manipulations on them
1664 * for various reasons, (modifications for compatibility, skip obsolete
1665 * records, change uuids, etc), then class_process_config() resulting
1668 int class_config_llog_handler(const struct lu_env *env,
1669 struct llog_handle *handle,
1670 struct llog_rec_hdr *rec, void *data)
1672 struct config_llog_instance *cfg = data;
1673 int cfg_len = rec->lrh_len;
1674 char *cfg_buf = (char *) (rec + 1);
1678 /* class_config_dump_handler(handle, rec, data); */
1680 switch (rec->lrh_type) {
1682 struct lustre_cfg *lcfg, *lcfg_new;
1683 struct lustre_cfg_bufs bufs;
1684 char *inst_name = NULL;
1688 lcfg = (struct lustre_cfg *)cfg_buf;
1689 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1690 lustre_swab_lustre_cfg(lcfg);
1694 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1698 /* Figure out config state info */
1699 if (lcfg->lcfg_command == LCFG_MARKER) {
1700 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1701 lustre_swab_cfg_marker(marker, swab,
1702 LUSTRE_CFG_BUFLEN(lcfg, 1));
1703 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1704 cfg->cfg_flags, marker->cm_flags);
1705 if (marker->cm_flags & CM_START) {
1706 /* all previous flags off */
1707 cfg->cfg_flags = CFG_F_MARKER;
1708 server_name2index(marker->cm_tgtname,
1709 &cfg->cfg_lwp_idx, NULL);
1710 if (marker->cm_flags & CM_SKIP) {
1711 cfg->cfg_flags |= CFG_F_SKIP;
1712 CDEBUG(D_CONFIG, "SKIP #%d\n",
1714 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1716 lustre_check_exclusion(cfg->cfg_sb,
1717 marker->cm_tgtname))) {
1718 cfg->cfg_flags |= CFG_F_EXCLUDE;
1719 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1722 } else if (marker->cm_flags & CM_END) {
1727 * A config command without a start marker before it is
1730 if (!(cfg->cfg_flags & CFG_F_MARKER) &&
1731 (lcfg->lcfg_command != LCFG_MARKER)) {
1732 CWARN("Skip config outside markers, (inst: %016lx, uuid: %s, flags: %#x)\n",
1734 cfg->cfg_uuid.uuid, cfg->cfg_flags);
1735 cfg->cfg_flags |= CFG_F_SKIP;
1737 if (cfg->cfg_flags & CFG_F_SKIP) {
1738 CDEBUG(D_CONFIG, "skipping %#x\n",
1741 /* No processing! */
1746 * For interoperability between 1.8 and 2.0,
1747 * rename "mds" OBD device type to "mdt".
1750 char *typename = lustre_cfg_string(lcfg, 1);
1751 char *index = lustre_cfg_string(lcfg, 2);
1753 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1754 strcmp(typename, "mds") == 0)) {
1755 CWARN("For 1.8 interoperability, rename obd "
1756 "type from mds to mdt\n");
1759 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1760 strcmp(index, "type") == 0)) {
1761 CDEBUG(D_INFO, "For 1.8 interoperability, "
1762 "set this index to '0'\n");
1768 #ifdef HAVE_SERVER_SUPPORT
1769 /* newer MDS replaces LOV/OSC with LOD/OSP */
1770 if ((lcfg->lcfg_command == LCFG_ATTACH ||
1771 lcfg->lcfg_command == LCFG_SET_PARAM ||
1772 lcfg->lcfg_command == LCFG_PARAM) &&
1773 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1774 char *typename = lustre_cfg_string(lcfg, 1);
1777 strcmp(typename, LUSTRE_LOV_NAME) == 0) {
1779 "For 2.x interoperability, rename obd "
1780 "type from lov to lod (%s)\n",
1781 s2lsi(cfg->cfg_sb)->lsi_svname);
1782 strcpy(typename, LUSTRE_LOD_NAME);
1785 strcmp(typename, LUSTRE_OSC_NAME) == 0) {
1787 "For 2.x interoperability, rename obd "
1788 "type from osc to osp (%s)\n",
1789 s2lsi(cfg->cfg_sb)->lsi_svname);
1790 strcpy(typename, LUSTRE_OSP_NAME);
1793 #endif /* HAVE_SERVER_SUPPORT */
1795 if (cfg->cfg_flags & CFG_F_EXCLUDE) {
1796 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1797 lcfg->lcfg_command);
1798 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1799 /* Add inactive instead */
1800 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1803 lustre_cfg_bufs_reset(&bufs, NULL);
1804 lustre_cfg_bufs_init(&bufs, lcfg);
1806 if (cfg->cfg_instance &&
1807 lcfg->lcfg_command != LCFG_SPTLRPC_CONF &&
1808 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1809 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1810 LUSTRE_MAXINSTANCE + 4;
1811 OBD_ALLOC(inst_name, inst_len);
1813 GOTO(out, rc = -ENOMEM);
1814 snprintf(inst_name, inst_len, "%s-%016lx",
1815 lustre_cfg_string(lcfg, 0),
1817 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1818 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1819 lcfg->lcfg_command, inst_name);
1822 /* override llog UUID for clients, to insure they are unique */
1823 if (cfg->cfg_instance && lcfg->lcfg_command == LCFG_ATTACH)
1824 lustre_cfg_bufs_set_string(&bufs, 2,
1825 cfg->cfg_uuid.uuid);
1827 * sptlrpc config record, we expect 2 data segments:
1828 * [0]: fs_name/target_name,
1830 * moving them to index [1] and [2], and insert MGC's
1831 * obdname at index [0].
1833 if (cfg->cfg_instance &&
1834 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1835 /* After ASLR changes cfg_instance this needs fixing */
1836 /* "obd" is set in config_log_find_or_add() */
1837 struct obd_device *obd = (void *)cfg->cfg_instance;
1839 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1840 bufs.lcfg_buflen[1]);
1841 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1842 bufs.lcfg_buflen[0]);
1843 lustre_cfg_bufs_set_string(&bufs, 0,
1848 * Add net info to setup command
1849 * if given on command line.
1850 * So config log will be:
1854 * [3]: inactive-on-startup
1855 * [4]: restrictive net
1857 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1858 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1859 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1860 char *nidnet = lsi->lsi_lmd->lmd_nidnet;
1862 if (lcfg->lcfg_command == LCFG_SETUP &&
1863 lcfg->lcfg_bufcount != 2 && nidnet) {
1864 CDEBUG(D_CONFIG, "Adding net %s info to setup "
1865 "command for client %s\n", nidnet,
1866 lustre_cfg_string(lcfg, 0));
1867 lustre_cfg_bufs_set_string(&bufs, 4, nidnet);
1872 * Skip add_conn command if uuid is
1873 * not on restricted net
1875 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1876 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1877 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1878 char *uuid_str = lustre_cfg_string(lcfg, 1);
1880 if (lcfg->lcfg_command == LCFG_ADD_CONN &&
1881 lsi->lsi_lmd->lmd_nidnet &&
1882 LNET_NIDNET(libcfs_str2nid(uuid_str)) !=
1883 libcfs_str2net(lsi->lsi_lmd->lmd_nidnet)) {
1884 CDEBUG(D_CONFIG, "skipping add_conn for %s\n",
1887 /* No processing! */
1892 OBD_ALLOC(lcfg_new, lustre_cfg_len(bufs.lcfg_bufcount,
1895 GOTO(out, rc = -ENOMEM);
1897 lustre_cfg_init(lcfg_new, lcfg->lcfg_command, &bufs);
1898 lcfg_new->lcfg_num = lcfg->lcfg_num;
1899 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1902 * XXX Hack to try to remain binary compatible with
1903 * pre-newconfig logs
1905 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1906 (lcfg->lcfg_nid >> 32) == 0) {
1907 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1909 lcfg_new->lcfg_nid =
1910 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1911 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1912 lcfg->lcfg_nal, addr,
1913 libcfs_nid2str(lcfg_new->lcfg_nid));
1915 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1918 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1920 rc = class_process_config(lcfg_new);
1921 OBD_FREE(lcfg_new, lustre_cfg_len(lcfg_new->lcfg_bufcount,
1922 lcfg_new->lcfg_buflens));
1924 OBD_FREE(inst_name, inst_len);
1928 CERROR("Unknown llog record type %#x encountered\n",
1934 CERROR("%s: cfg command failed: rc = %d\n",
1935 handle->lgh_ctxt->loc_obd->obd_name, rc);
1936 class_config_dump_handler(NULL, handle, rec, data);
1940 EXPORT_SYMBOL(class_config_llog_handler);
1942 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1943 char *name, struct config_llog_instance *cfg)
1945 struct llog_process_cat_data cd = {
1946 .lpcd_first_idx = 0,
1948 struct llog_handle *llh;
1953 CDEBUG(D_INFO, "looking up llog %s\n", name);
1954 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1958 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1960 GOTO(parse_out, rc);
1962 /* continue processing from where we last stopped to end-of-log */
1964 cd.lpcd_first_idx = cfg->cfg_last_idx;
1965 callback = cfg->cfg_callback;
1966 LASSERT(callback != NULL);
1968 callback = class_config_llog_handler;
1971 cd.lpcd_last_idx = 0;
1973 rc = llog_process(env, llh, callback, cfg, &cd);
1975 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1976 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1978 cfg->cfg_last_idx = cd.lpcd_last_idx;
1981 llog_close(env, llh);
1984 EXPORT_SYMBOL(class_config_parse_llog);
1987 * Parse config record and output dump in supplied buffer.
1989 * This is separated from class_config_dump_handler() to use
1990 * for ioctl needs as well
1993 * - { index: 4, event: attach, device: lustrewt-clilov, type: lov,
1994 * UUID: lustrewt-clilov_UUID }
1996 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size)
1998 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2000 char *end = buf + size;
2002 struct lcfg_type_data *ldata;
2004 LASSERT(rec->lrh_type == OBD_CFG_REC);
2005 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2009 ldata = lcfg_cmd2data(lcfg->lcfg_command);
2013 if (lcfg->lcfg_command == LCFG_MARKER)
2016 /* form YAML entity */
2017 ptr += snprintf(ptr, end - ptr, "- { index: %u, event: %s",
2018 rec->lrh_index, ldata->ltd_name);
2022 if (lcfg->lcfg_flags) {
2023 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
2028 if (lcfg->lcfg_num) {
2029 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
2034 if (lcfg->lcfg_nid) {
2035 char nidstr[LNET_NIDSTR_SIZE];
2037 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2038 ptr += snprintf(ptr, end - ptr, ", nid: %s(%#llx)",
2039 nidstr, lcfg->lcfg_nid);
2044 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
2045 ptr += snprintf(ptr, end - ptr, ", device: %s",
2046 lustre_cfg_string(lcfg, 0));
2051 if (lcfg->lcfg_command == LCFG_SET_PARAM) {
2053 * set_param -P parameters have param=val here, separate
2054 * them through pointer magic and print them out in
2057 char *cfg_str = lustre_cfg_string(lcfg, 1);
2058 char *tmp = strchr(cfg_str, '=');
2064 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[0]);
2065 len = tmp - cfg_str + 1;
2066 snprintf(ptr, len, "%s", cfg_str);
2069 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[1]);
2070 ptr += snprintf(ptr, end - ptr, "%s", tmp + 1);
2075 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
2076 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0) {
2077 ptr += snprintf(ptr, end - ptr, ", %s: %s",
2078 ldata->ltd_bufs[i - 1],
2079 lustre_cfg_string(lcfg, i));
2086 ptr += snprintf(ptr, end - ptr, " }\n");
2088 /* Return consumed bytes. If the buffer overflowed, zero last byte */
2099 * parse config record and output dump in supplied buffer.
2100 * This is separated from class_config_dump_handler() to use
2101 * for ioctl needs as well
2103 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
2105 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2107 char *end = buf + size;
2112 LASSERT(rec->lrh_type == OBD_CFG_REC);
2113 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2117 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
2118 if (lcfg->lcfg_flags)
2119 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
2123 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
2125 if (lcfg->lcfg_nid) {
2126 char nidstr[LNET_NIDSTR_SIZE];
2128 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2129 ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx) ",
2130 nidstr, lcfg->lcfg_nid);
2133 if (lcfg->lcfg_command == LCFG_MARKER) {
2134 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
2136 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
2137 marker->cm_step, marker->cm_flags,
2138 marker->cm_tgtname, marker->cm_comment);
2142 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
2143 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
2144 lustre_cfg_string(lcfg, i));
2147 ptr += snprintf(ptr, end - ptr, "\n");
2148 /* return consumed bytes */
2153 int class_config_dump_handler(const struct lu_env *env,
2154 struct llog_handle *handle,
2155 struct llog_rec_hdr *rec, void *data)
2162 OBD_ALLOC(outstr, 256);
2166 if (rec->lrh_type == OBD_CFG_REC) {
2167 class_config_parse_rec(rec, outstr, 256);
2168 LCONSOLE(D_WARNING, " %s\n", outstr);
2170 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
2174 OBD_FREE(outstr, 256);
2179 * Call class_cleanup and class_detach.
2180 * "Manual" only in the sense that we're faking lcfg commands.
2182 int class_manual_cleanup(struct obd_device *obd)
2185 struct lustre_cfg *lcfg;
2186 struct lustre_cfg_bufs bufs;
2192 CERROR("empty cleanup\n");
2197 strlcat(flags, "F", sizeof(flags));
2199 strlcat(flags, "A", sizeof(flags));
2201 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
2202 obd->obd_name, flags);
2204 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
2205 lustre_cfg_bufs_set_string(&bufs, 1, flags);
2206 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
2209 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
2211 rc = class_process_config(lcfg);
2213 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
2217 /* the lcfg is almost the same for both ops */
2218 lcfg->lcfg_command = LCFG_DETACH;
2219 rc = class_process_config(lcfg);
2221 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
2223 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
2226 EXPORT_SYMBOL(class_manual_cleanup);
2229 * nid<->export hash operations
2232 nid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2234 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
2238 nid_key(struct hlist_node *hnode)
2240 struct obd_export *exp;
2242 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2244 RETURN(&exp->exp_connection->c_peer.nid);
2248 * NOTE: It is impossible to find an export that is in failed
2249 * state with this function
2252 nid_kepcmp(const void *key, struct hlist_node *hnode)
2254 struct obd_export *exp;
2257 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2259 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
2264 nid_export_object(struct hlist_node *hnode)
2266 return hlist_entry(hnode, struct obd_export, exp_nid_hash);
2270 nid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2272 struct obd_export *exp;
2274 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2275 class_export_get(exp);
2279 nid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2281 struct obd_export *exp;
2283 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2284 class_export_put(exp);
2287 static struct cfs_hash_ops nid_hash_ops = {
2288 .hs_hash = nid_hash,
2290 .hs_keycmp = nid_kepcmp,
2291 .hs_object = nid_export_object,
2292 .hs_get = nid_export_get,
2293 .hs_put_locked = nid_export_put_locked,
2298 * nid<->nidstats hash operations
2302 nidstats_key(struct hlist_node *hnode)
2304 struct nid_stat *ns;
2306 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2312 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2314 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
2318 nidstats_object(struct hlist_node *hnode)
2320 return hlist_entry(hnode, struct nid_stat, nid_hash);
2324 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2326 struct nid_stat *ns;
2328 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2333 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2335 struct nid_stat *ns;
2337 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2341 static struct cfs_hash_ops nid_stat_hash_ops = {
2342 .hs_hash = nid_hash,
2343 .hs_key = nidstats_key,
2344 .hs_keycmp = nidstats_keycmp,
2345 .hs_object = nidstats_object,
2346 .hs_get = nidstats_get,
2347 .hs_put_locked = nidstats_put_locked,
2352 * client_generation<->export hash operations
2356 gen_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2358 return cfs_hash_djb2_hash(key, sizeof(__u32), mask);
2362 gen_key(struct hlist_node *hnode)
2364 struct obd_export *exp;
2366 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2368 RETURN(&exp->exp_target_data.ted_lcd->lcd_generation);
2372 * NOTE: It is impossible to find an export that is in failed
2373 * state with this function
2376 gen_kepcmp(const void *key, struct hlist_node *hnode)
2378 struct obd_export *exp;
2381 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2383 RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key &&
2388 gen_export_object(struct hlist_node *hnode)
2390 return hlist_entry(hnode, struct obd_export, exp_gen_hash);
2394 gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2396 struct obd_export *exp;
2398 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2399 class_export_get(exp);
2403 gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2405 struct obd_export *exp;
2407 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2408 class_export_put(exp);
2411 static struct cfs_hash_ops gen_hash_ops = {
2412 .hs_hash = gen_hash,
2414 .hs_keycmp = gen_kepcmp,
2415 .hs_object = gen_export_object,
2416 .hs_get = gen_export_get,
2417 .hs_put_locked = gen_export_put_locked,