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 uuid_hash_ops;
53 static struct cfs_hash_ops nid_hash_ops;
54 static struct cfs_hash_ops nid_stat_hash_ops;
55 static struct cfs_hash_ops gen_hash_ops;
57 /*********** string parsing utils *********/
59 /* returns 0 if we find this key in the buffer, else 1 */
60 int class_find_param(char *buf, char *key, char **valp)
67 if ((ptr = strstr(buf, key)) == NULL)
71 *valp = ptr + strlen(key);
75 EXPORT_SYMBOL(class_find_param);
78 * Check whether the proc parameter \a param is an old parameter or not from
79 * the array \a ptr which contains the mapping from old parameters to new ones.
80 * If it's an old one, then return the pointer to the cfg_interop_param struc-
81 * ture which contains both the old and new parameters.
83 * \param param proc parameter
84 * \param ptr an array which contains the mapping from
85 * old parameters to new ones
87 * \retval valid-pointer pointer to the cfg_interop_param structure
88 * which contains the old and new parameters
89 * \retval NULL \a param or \a ptr is NULL,
90 * or \a param is not an old parameter
92 struct cfg_interop_param *class_find_old_param(const char *param,
93 struct cfg_interop_param *ptr)
98 if (param == NULL || ptr == NULL)
101 value = strchr(param, '=');
103 name_len = strlen(param);
105 name_len = value - param;
107 while (ptr->old_param != NULL) {
108 if (strncmp(param, ptr->old_param, name_len) == 0 &&
109 name_len == strlen(ptr->old_param))
116 EXPORT_SYMBOL(class_find_old_param);
119 * Finds a parameter in \a params and copies it to \a copy.
121 * Leading spaces are skipped. Next space or end of string is the
122 * parameter terminator with the exception that spaces inside single or double
123 * quotes get included into a parameter. The parameter is copied into \a copy
124 * which has to be allocated big enough by a caller, quotes are stripped in
125 * the copy and the copy is terminated by 0.
127 * On return \a params is set to next parameter or to NULL if last
128 * parameter is returned.
130 * \retval 0 if parameter is returned in \a copy
131 * \retval 1 otherwise
132 * \retval -EINVAL if unbalanced quota is found
134 int class_get_next_param(char **params, char *copy)
149 q1 = strpbrk(str, " '\"");
152 memcpy(copy, str, len);
159 memcpy(copy, str, len);
165 memcpy(copy, str, len);
168 /* search for the matching closing quote */
170 q2 = strchr(str, *q1);
172 CERROR("Unbalanced quota in parameters: \"%s\"\n",
177 memcpy(copy, str, len);
183 EXPORT_SYMBOL(class_get_next_param);
185 /* returns 0 if this is the first key in the buffer, else 1.
186 valp points to first char after key. */
187 int class_match_param(char *buf, const char *key, char **valp)
192 if (memcmp(buf, key, strlen(key)) != 0)
196 *valp = buf + strlen(key);
200 EXPORT_SYMBOL(class_match_param);
202 static int parse_nid(char *buf, void *value, int quiet)
204 lnet_nid_t *nid = (lnet_nid_t *)value;
206 *nid = libcfs_str2nid(buf);
207 if (*nid != LNET_NID_ANY)
211 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
215 static int parse_net(char *buf, void *value)
217 __u32 *net = (__u32 *)value;
219 *net = libcfs_str2net(buf);
220 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
232 endh is set to next separator */
233 static int class_parse_value(char *buf, int opc, void *value, char **endh,
242 while (*buf == ',' || *buf == ':')
244 if (*buf == ' ' || *buf == '/' || *buf == '\0')
247 /* nid separators or end of nids */
248 endp = strpbrk(buf, ",: /");
250 endp = buf + strlen(buf);
257 case CLASS_PARSE_NID:
258 rc = parse_nid(buf, value, quiet);
260 case CLASS_PARSE_NET:
261 rc = parse_net(buf, value);
272 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
274 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
276 EXPORT_SYMBOL(class_parse_nid);
278 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
280 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
282 EXPORT_SYMBOL(class_parse_nid_quiet);
284 int class_parse_net(char *buf, __u32 *net, char **endh)
286 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
289 /* 1 param contains key and match
290 * 0 param contains key and not match
291 * -1 param does not contain key
293 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
298 while (class_find_param(buf, key, &buf) == 0) {
299 /* please restrict to the nids pertaining to
300 * the specified nids */
301 while (class_parse_nid(buf, &tmp, &buf) == 0) {
310 int class_match_net(char *buf, char *key, __u32 net)
315 while (class_find_param(buf, key, &buf) == 0) {
316 /* please restrict to the nids pertaining to
317 * the specified networks */
318 while (class_parse_net(buf, &tmp, &buf) == 0) {
327 char *lustre_cfg_string(struct lustre_cfg *lcfg, u32 index)
331 if (!lcfg->lcfg_buflens[index])
334 s = lustre_cfg_buf(lcfg, index);
339 * make sure it's NULL terminated, even if this kills a char
340 * of data. Try to use the padding first though.
342 if (s[lcfg->lcfg_buflens[index] - 1] != '\0') {
343 size_t last = ALIGN(lcfg->lcfg_buflens[index], 8) - 1;
346 /* Use the smaller value */
347 if (last > lcfg->lcfg_buflens[index])
348 last = lcfg->lcfg_buflens[index];
353 CWARN("Truncated buf %d to '%s' (lost '%c'...)\n",
359 EXPORT_SYMBOL(lustre_cfg_string);
361 /********************** class fns **********************/
364 * Create a new obd device and set the type, name and uuid. If successful,
365 * the new device can be accessed by either name or uuid.
367 int class_attach(struct lustre_cfg *lcfg)
369 struct obd_export *exp;
370 struct obd_device *obd = NULL;
371 char *typename, *name, *uuid;
375 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
376 CERROR("No type passed!\n");
379 typename = lustre_cfg_string(lcfg, 1);
381 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
382 CERROR("No name passed!\n");
385 name = lustre_cfg_string(lcfg, 0);
386 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
387 CERROR("No UUID passed!\n");
391 uuid = lustre_cfg_string(lcfg, 2);
393 if (len >= sizeof(obd->obd_uuid)) {
394 CERROR("%s: uuid must be < %d bytes long\n",
395 name, (int)sizeof(obd->obd_uuid));
399 obd = class_newdev(typename, name, uuid);
400 if (IS_ERR(obd)) { /* Already exists or out of obds */
402 CERROR("Cannot create device %s of type %s : %d\n",
406 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
407 "obd %p obd_magic %08X != %08X\n",
408 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
409 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
410 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
412 exp = class_new_export_self(obd, &obd->obd_uuid);
419 obd->obd_self_export = exp;
420 list_del_init(&exp->exp_obd_chain_timed);
421 class_export_put(exp);
423 rc = class_register_device(obd);
425 class_decref(obd, "newdev", obd);
429 obd->obd_attached = 1;
430 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
431 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
435 EXPORT_SYMBOL(class_attach);
437 /** Create hashes, self-export, and call type-specific setup.
438 * Setup is effectively the "start this obd" call.
440 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
445 LASSERT(obd != NULL);
446 LASSERTF(obd == class_num2obd(obd->obd_minor),
447 "obd %p != obd_devs[%d] %p\n",
448 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
449 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
450 "obd %p obd_magic %08x != %08x\n",
451 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
453 /* have we attached a type to this device? */
454 if (!obd->obd_attached) {
455 CERROR("Device %d not attached\n", obd->obd_minor);
459 if (obd->obd_set_up) {
460 CERROR("Device %d already setup (type %s)\n",
461 obd->obd_minor, obd->obd_type->typ_name);
465 /* is someone else setting us up right now? (attach inits spinlock) */
466 spin_lock(&obd->obd_dev_lock);
467 if (obd->obd_starting) {
468 spin_unlock(&obd->obd_dev_lock);
469 CERROR("Device %d setup in progress (type %s)\n",
470 obd->obd_minor, obd->obd_type->typ_name);
473 /* just leave this on forever. I can't use obd_set_up here because
474 other fns check that status, and we're not actually set up yet. */
475 obd->obd_starting = 1;
476 obd->obd_uuid_hash = NULL;
477 obd->obd_nid_hash = NULL;
478 obd->obd_nid_stats_hash = NULL;
479 obd->obd_gen_hash = NULL;
480 spin_unlock(&obd->obd_dev_lock);
482 /* create an uuid-export lustre hash */
483 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
486 HASH_UUID_BKT_BITS, 0,
489 &uuid_hash_ops, CFS_HASH_DEFAULT);
490 if (!obd->obd_uuid_hash)
491 GOTO(err_exit, err = -ENOMEM);
493 /* create a nid-export lustre hash */
494 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
497 HASH_NID_BKT_BITS, 0,
500 &nid_hash_ops, CFS_HASH_DEFAULT);
501 if (!obd->obd_nid_hash)
502 GOTO(err_exit, err = -ENOMEM);
504 /* create a nid-stats lustre hash */
505 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
506 HASH_NID_STATS_CUR_BITS,
507 HASH_NID_STATS_MAX_BITS,
508 HASH_NID_STATS_BKT_BITS, 0,
511 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
512 if (!obd->obd_nid_stats_hash)
513 GOTO(err_exit, err = -ENOMEM);
515 /* create a client_generation-export lustre hash */
516 obd->obd_gen_hash = cfs_hash_create("UUID_HASH",
519 HASH_GEN_BKT_BITS, 0,
522 &gen_hash_ops, CFS_HASH_DEFAULT);
523 if (!obd->obd_gen_hash)
524 GOTO(err_exit, err = -ENOMEM);
526 err = obd_setup(obd, lcfg);
532 spin_lock(&obd->obd_dev_lock);
533 /* cleanup drops this */
534 class_incref(obd, "setup", obd);
535 spin_unlock(&obd->obd_dev_lock);
537 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
538 obd->obd_name, obd->obd_uuid.uuid);
542 if (obd->obd_uuid_hash) {
543 cfs_hash_putref(obd->obd_uuid_hash);
544 obd->obd_uuid_hash = NULL;
546 if (obd->obd_nid_hash) {
547 cfs_hash_putref(obd->obd_nid_hash);
548 obd->obd_nid_hash = NULL;
550 if (obd->obd_nid_stats_hash) {
551 cfs_hash_putref(obd->obd_nid_stats_hash);
552 obd->obd_nid_stats_hash = NULL;
554 if (obd->obd_gen_hash) {
555 cfs_hash_putref(obd->obd_gen_hash);
556 obd->obd_gen_hash = NULL;
558 obd->obd_starting = 0;
559 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
562 EXPORT_SYMBOL(class_setup);
564 /** We have finished using this obd and are ready to destroy it.
565 * There can be no more references to this obd.
567 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
571 if (obd->obd_set_up) {
572 CERROR("OBD device %d still set up\n", obd->obd_minor);
576 spin_lock(&obd->obd_dev_lock);
577 if (!obd->obd_attached) {
578 spin_unlock(&obd->obd_dev_lock);
579 CERROR("OBD device %d not attached\n", obd->obd_minor);
582 obd->obd_attached = 0;
583 spin_unlock(&obd->obd_dev_lock);
585 /* cleanup in progress. we don't like to find this device after now */
586 class_unregister_device(obd);
588 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
589 obd->obd_name, obd->obd_uuid.uuid);
591 class_decref(obd, "newdev", obd);
595 EXPORT_SYMBOL(class_detach);
597 /** Start shutting down the obd. There may be in-progess ops when
598 * this is called. We tell them to start shutting down with a call
599 * to class_disconnect_exports().
601 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
607 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
609 if (!obd->obd_set_up) {
610 CERROR("Device %d not setup\n", obd->obd_minor);
614 spin_lock(&obd->obd_dev_lock);
615 if (obd->obd_stopping) {
616 spin_unlock(&obd->obd_dev_lock);
617 CERROR("OBD %d already stopping\n", obd->obd_minor);
620 /* Leave this on forever */
621 obd->obd_stopping = 1;
622 /* function can't return error after that point, so clear setup flag
623 * as early as possible to avoid finding via obd_devs / hash */
625 spin_unlock(&obd->obd_dev_lock);
627 /* wait for already-arrived-connections to finish. */
628 while (obd->obd_conn_inprogress > 0)
632 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
633 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
639 LCONSOLE_WARN("Failing over %s\n",
642 obd->obd_no_transno = 1;
643 obd->obd_no_recov = 1;
644 if (OBP(obd, iocontrol)) {
645 obd_iocontrol(OBD_IOC_SYNC,
646 obd->obd_self_export,
651 CERROR("Unrecognised flag '%c'\n", *flag);
655 LASSERT(obd->obd_self_export);
657 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d/%d\n",
658 obd->obd_name, obd->obd_num_exports,
659 atomic_read(&obd->obd_refcount) - 2);
660 dump_exports(obd, 0, D_HA);
661 class_disconnect_exports(obd);
663 /* Precleanup, we must make sure all exports get destroyed. */
664 err = obd_precleanup(obd);
666 CERROR("Precleanup %s returned %d\n",
669 /* destroy an uuid-export hash body */
670 if (obd->obd_uuid_hash) {
671 cfs_hash_putref(obd->obd_uuid_hash);
672 obd->obd_uuid_hash = NULL;
675 /* destroy a nid-export hash body */
676 if (obd->obd_nid_hash) {
677 cfs_hash_putref(obd->obd_nid_hash);
678 obd->obd_nid_hash = NULL;
681 /* destroy a nid-stats hash body */
682 if (obd->obd_nid_stats_hash) {
683 cfs_hash_putref(obd->obd_nid_stats_hash);
684 obd->obd_nid_stats_hash = NULL;
687 /* destroy a client_generation-export hash body */
688 if (obd->obd_gen_hash) {
689 cfs_hash_putref(obd->obd_gen_hash);
690 obd->obd_gen_hash = NULL;
693 class_decref(obd, "setup", obd);
699 struct obd_device *class_incref(struct obd_device *obd,
700 const char *scope, const void *source)
702 lu_ref_add_atomic(&obd->obd_reference, scope, source);
703 atomic_inc(&obd->obd_refcount);
704 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
705 atomic_read(&obd->obd_refcount));
709 EXPORT_SYMBOL(class_incref);
711 void class_decref(struct obd_device *obd, const char *scope, const void *source)
715 CDEBUG(D_INFO, "Decref %s (%p) now %d - %s\n", obd->obd_name, obd,
716 atomic_read(&obd->obd_refcount), scope);
718 LASSERT(obd->obd_num_exports >= 0);
719 last = atomic_dec_and_test(&obd->obd_refcount);
720 lu_ref_del(&obd->obd_reference, scope, source);
723 struct obd_export *exp;
725 LASSERT(!obd->obd_attached);
726 /* All exports have been destroyed; there should
727 * be no more in-progress ops by this point.*/
728 exp = obd->obd_self_export;
731 exp->exp_flags |= exp_flags_from_obd(obd);
732 class_unlink_export(exp);
736 EXPORT_SYMBOL(class_decref);
738 /** Add a failover nid location.
739 * Client obd types contact server obd types using this nid list.
741 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
743 struct obd_import *imp;
744 struct obd_uuid uuid;
748 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
749 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
750 CERROR("invalid conn_uuid\n");
753 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
754 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
755 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
756 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
757 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
758 CERROR("can't add connection on non-client dev\n");
762 imp = obd->u.cli.cl_import;
764 CERROR("try to add conn on immature client dev\n");
768 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
769 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
774 /** Remove a failover nid location.
776 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
778 struct obd_import *imp;
779 struct obd_uuid uuid;
783 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
784 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
785 CERROR("invalid conn_uuid\n");
788 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
789 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
790 CERROR("can't del connection on non-client dev\n");
794 imp = obd->u.cli.cl_import;
796 CERROR("try to del conn on immature client dev\n");
800 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
801 rc = obd_del_conn(imp, &uuid);
806 static LIST_HEAD(lustre_profile_list);
807 static DEFINE_SPINLOCK(lustre_profile_list_lock);
809 struct lustre_profile *class_get_profile(const char *prof)
811 struct lustre_profile *lprof;
814 spin_lock(&lustre_profile_list_lock);
815 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
816 if (!strcmp(lprof->lp_profile, prof)) {
818 spin_unlock(&lustre_profile_list_lock);
822 spin_unlock(&lustre_profile_list_lock);
825 EXPORT_SYMBOL(class_get_profile);
827 /** Create a named "profile".
828 * This defines the mdc and osc names to use for a client.
829 * This also is used to define the lov to be used by a mdt.
831 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
832 int mdclen, char *mdc)
834 struct lustre_profile *lprof;
838 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
840 OBD_ALLOC(lprof, sizeof(*lprof));
843 INIT_LIST_HEAD(&lprof->lp_list);
845 LASSERT(proflen == (strlen(prof) + 1));
846 OBD_ALLOC(lprof->lp_profile, proflen);
847 if (lprof->lp_profile == NULL)
848 GOTO(out, err = -ENOMEM);
849 memcpy(lprof->lp_profile, prof, proflen);
851 LASSERT(osclen == (strlen(osc) + 1));
852 OBD_ALLOC(lprof->lp_dt, osclen);
853 if (lprof->lp_dt == NULL)
854 GOTO(out, err = -ENOMEM);
855 memcpy(lprof->lp_dt, osc, osclen);
858 LASSERT(mdclen == (strlen(mdc) + 1));
859 OBD_ALLOC(lprof->lp_md, mdclen);
860 if (lprof->lp_md == NULL)
861 GOTO(out, err = -ENOMEM);
862 memcpy(lprof->lp_md, mdc, mdclen);
865 spin_lock(&lustre_profile_list_lock);
867 lprof->lp_list_deleted = false;
869 list_add(&lprof->lp_list, &lustre_profile_list);
870 spin_unlock(&lustre_profile_list_lock);
875 OBD_FREE(lprof->lp_md, mdclen);
877 OBD_FREE(lprof->lp_dt, osclen);
878 if (lprof->lp_profile)
879 OBD_FREE(lprof->lp_profile, proflen);
880 OBD_FREE(lprof, sizeof(*lprof));
884 void class_del_profile(const char *prof)
886 struct lustre_profile *lprof;
889 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
891 lprof = class_get_profile(prof);
893 spin_lock(&lustre_profile_list_lock);
894 /* because get profile increments the ref counter */
896 list_del(&lprof->lp_list);
897 lprof->lp_list_deleted = true;
898 spin_unlock(&lustre_profile_list_lock);
900 class_put_profile(lprof);
904 EXPORT_SYMBOL(class_del_profile);
906 void class_put_profile(struct lustre_profile *lprof)
908 spin_lock(&lustre_profile_list_lock);
909 if ((--lprof->lp_refs) > 0) {
910 LASSERT(lprof->lp_refs > 0);
911 spin_unlock(&lustre_profile_list_lock);
914 spin_unlock(&lustre_profile_list_lock);
916 /* confirm not a negative number */
917 LASSERT(lprof->lp_refs == 0);
919 /* At least one class_del_profile/profiles must be called
920 * on the target profile or lustre_profile_list will corrupt */
921 LASSERT(lprof->lp_list_deleted);
922 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
923 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
924 if (lprof->lp_md != NULL)
925 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
926 OBD_FREE(lprof, sizeof(*lprof));
928 EXPORT_SYMBOL(class_put_profile);
931 void class_del_profiles(void)
933 struct lustre_profile *lprof, *n;
936 spin_lock(&lustre_profile_list_lock);
937 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
938 list_del(&lprof->lp_list);
939 lprof->lp_list_deleted = true;
940 spin_unlock(&lustre_profile_list_lock);
942 class_put_profile(lprof);
944 spin_lock(&lustre_profile_list_lock);
946 spin_unlock(&lustre_profile_list_lock);
949 EXPORT_SYMBOL(class_del_profiles);
951 /* We can't call lquota_process_config directly because
952 * it lives in a module that must be loaded after this one.
954 #ifdef HAVE_SERVER_SUPPORT
955 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
956 #endif /* HAVE_SERVER_SUPPORT */
959 * Rename the proc parameter in \a cfg with a new name \a new_name.
961 * \param cfg config structure which contains the proc parameter
962 * \param new_name new name of the proc parameter
964 * \retval valid-pointer pointer to the newly-allocated config structure
965 * which contains the renamed proc parameter
966 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
967 * not contain a proc parameter
968 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
970 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
971 const char *new_name)
973 struct lustre_cfg_bufs *bufs = NULL;
974 struct lustre_cfg *new_cfg = NULL;
976 char *new_param = NULL;
982 if (!cfg || !new_name)
983 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
985 param = lustre_cfg_string(cfg, 1);
987 GOTO(out_nocfg, new_cfg = ERR_PTR(-EINVAL));
989 value = strchr(param, '=');
991 name_len = strlen(param);
993 name_len = value - param;
995 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
997 OBD_ALLOC(new_param, new_len);
999 GOTO(out_nocfg, new_cfg = ERR_PTR(-ENOMEM));
1001 strcpy(new_param, new_name);
1003 strcat(new_param, value);
1005 OBD_ALLOC_PTR(bufs);
1007 GOTO(out_free_param, new_cfg = ERR_PTR(-ENOMEM));
1009 lustre_cfg_bufs_reset(bufs, NULL);
1010 lustre_cfg_bufs_init(bufs, cfg);
1011 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1013 OBD_ALLOC(new_cfg, lustre_cfg_len(bufs->lcfg_bufcount,
1014 bufs->lcfg_buflen));
1016 GOTO(out_free_buf, new_cfg = ERR_PTR(-ENOMEM));
1018 lustre_cfg_init(new_cfg, cfg->lcfg_command, bufs);
1020 new_cfg->lcfg_num = cfg->lcfg_num;
1021 new_cfg->lcfg_flags = cfg->lcfg_flags;
1022 new_cfg->lcfg_nid = cfg->lcfg_nid;
1023 new_cfg->lcfg_nal = cfg->lcfg_nal;
1027 OBD_FREE(new_param, new_len);
1031 EXPORT_SYMBOL(lustre_cfg_rename);
1033 static ssize_t process_param2_config(struct lustre_cfg *lcfg)
1035 char *param = lustre_cfg_string(lcfg, 1);
1036 char *upcall = lustre_cfg_string(lcfg, 2);
1037 struct kobject *kobj = NULL;
1038 const char *subsys = param;
1040 [0] = "/usr/sbin/lctl",
1051 print_lustre_cfg(lcfg);
1053 len = strcspn(param, ".=");
1057 /* If we find '=' then its the top level sysfs directory */
1058 if (param[len] == '=')
1059 return class_set_global(param);
1061 subsys = kstrndup(param, len, GFP_KERNEL);
1065 kobj = kset_find_obj(lustre_kset, subsys);
1068 char *value = param;
1072 param = strsep(&value, "=");
1073 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s", param);
1074 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1077 rc = kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
1078 for (i = 0; i < ARRAY_SIZE(envp); i++)
1086 /* Add upcall processing here. Now only lctl is supported */
1087 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1088 CERROR("Unsupported upcall %s\n", upcall);
1092 start = ktime_get();
1093 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1097 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1098 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1099 (long)ktime_us_delta(end, start));
1101 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1102 argv[0], argv[1], argv[2],
1103 (long)ktime_us_delta(end, start));
1110 #ifdef HAVE_SERVER_SUPPORT
1111 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1113 quota_process_config = qpc;
1115 EXPORT_SYMBOL(lustre_register_quota_process_config);
1116 #endif /* HAVE_SERVER_SUPPORT */
1118 /** Process configuration commands given in lustre_cfg form.
1119 * These may come from direct calls (e.g. class_manual_cleanup)
1120 * or processing the config llog, or ioctl from lctl.
1122 int class_process_config(struct lustre_cfg *lcfg)
1124 struct obd_device *obd;
1127 LASSERT(lcfg && !IS_ERR(lcfg));
1128 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1130 /* Commands that don't need a device */
1131 switch(lcfg->lcfg_command) {
1133 err = class_attach(lcfg);
1136 case LCFG_ADD_UUID: {
1137 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid %#llx"
1138 " (%s)\n", lustre_cfg_string(lcfg, 1),
1139 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1141 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1144 case LCFG_DEL_UUID: {
1145 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1146 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1147 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1149 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1152 case LCFG_MOUNTOPT: {
1153 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1154 lustre_cfg_string(lcfg, 1),
1155 lustre_cfg_string(lcfg, 2),
1156 lustre_cfg_string(lcfg, 3));
1157 /* set these mount options somewhere, so ll_fill_super
1159 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1160 lustre_cfg_string(lcfg, 1),
1161 LUSTRE_CFG_BUFLEN(lcfg, 2),
1162 lustre_cfg_string(lcfg, 2),
1163 LUSTRE_CFG_BUFLEN(lcfg, 3),
1164 lustre_cfg_string(lcfg, 3));
1167 case LCFG_DEL_MOUNTOPT: {
1168 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1169 lustre_cfg_string(lcfg, 1));
1170 class_del_profile(lustre_cfg_string(lcfg, 1));
1173 case LCFG_SET_TIMEOUT: {
1174 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1175 obd_timeout, lcfg->lcfg_num);
1176 obd_timeout = max(lcfg->lcfg_num, 1U);
1177 obd_timeout_set = 1;
1180 case LCFG_SET_LDLM_TIMEOUT: {
1181 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1182 ldlm_timeout, lcfg->lcfg_num);
1183 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1184 if (ldlm_timeout >= obd_timeout)
1185 ldlm_timeout = max(obd_timeout / 3, 1U);
1186 ldlm_timeout_set = 1;
1189 case LCFG_SET_UPCALL: {
1190 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1191 /* COMPAT_146 Don't fail on old configs */
1195 struct cfg_marker *marker;
1196 marker = lustre_cfg_buf(lcfg, 1);
1197 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1198 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1204 /* llite has no obd */
1205 if (class_match_param(lustre_cfg_string(lcfg, 1),
1206 PARAM_LLITE, NULL) == 0) {
1207 struct lustre_sb_info *lsi;
1211 /* The instance name contains the sb:
1212 * lustre-client-aacfe000
1214 tmp = strrchr(lustre_cfg_string(lcfg, 0), '-');
1215 if (!tmp || !*(++tmp))
1216 GOTO(out, err = -EINVAL);
1218 if (sscanf(tmp, "%lx", &addr) != 1)
1219 GOTO(out, err = -EINVAL);
1221 lsi = s2lsi((struct super_block *)addr);
1222 /* This better be a real Lustre superblock! */
1223 LASSERT(lsi->lsi_lmd->lmd_magic == LMD_MAGIC);
1225 count = class_modify_config(lcfg, PARAM_LLITE,
1227 err = count < 0 ? count : 0;
1229 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1230 PARAM_SYS, &tmp) == 0)) {
1231 /* Global param settings */
1232 err = class_set_global(tmp);
1234 * Client or server should not fail to mount if
1235 * it hits an unknown configuration parameter.
1238 CWARN("Ignoring unknown param %s\n", tmp);
1241 #ifdef HAVE_SERVER_SUPPORT
1242 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1243 PARAM_QUOTA, &tmp) == 0) &&
1244 quota_process_config) {
1245 err = (*quota_process_config)(lcfg);
1247 #endif /* HAVE_SERVER_SUPPORT */
1252 case LCFG_SET_PARAM: {
1253 err = process_param2_config(lcfg);
1257 /* Commands that require a device */
1258 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1260 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1261 CERROR("this lcfg command requires a device name\n");
1263 CERROR("no device for: %s\n",
1264 lustre_cfg_string(lcfg, 0));
1266 GOTO(out, err = -EINVAL);
1268 switch(lcfg->lcfg_command) {
1270 err = class_setup(obd, lcfg);
1274 err = class_detach(obd, lcfg);
1277 case LCFG_CLEANUP: {
1278 err = class_cleanup(obd, lcfg);
1281 case LCFG_ADD_CONN: {
1282 err = class_add_conn(obd, lcfg);
1285 case LCFG_DEL_CONN: {
1286 err = class_del_conn(obd, lcfg);
1289 case LCFG_POOL_NEW: {
1290 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1293 case LCFG_POOL_ADD: {
1294 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1295 lustre_cfg_string(lcfg, 3));
1298 case LCFG_POOL_REM: {
1299 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1300 lustre_cfg_string(lcfg, 3));
1303 case LCFG_POOL_DEL: {
1304 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1307 /* Process config log ADD_MDC record twice to add MDC also to LOV
1310 * add 0:lustre-clilmv 1:lustre-MDT0000_UUID 2:0 3:1
1311 * 4:lustre-MDT0000-mdc_UUID
1313 case LCFG_ADD_MDC: {
1314 struct obd_device *lov_obd;
1317 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1321 /* make sure this is client LMV log entry */
1322 clilmv = strstr(lustre_cfg_string(lcfg, 0), "clilmv");
1326 /* replace 'lmv' with 'lov' name to address LOV device and
1327 * process llog record to add MDC there. */
1329 lov_obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1330 if (lov_obd == NULL) {
1332 CERROR("%s: Cannot find LOV by %s name, rc = %d\n",
1333 obd->obd_name, lustre_cfg_string(lcfg, 0), err);
1335 err = obd_process_config(lov_obd, sizeof(*lcfg), lcfg);
1337 /* restore 'lmv' name */
1342 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1349 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1350 CWARN("Ignoring error %d on optional command %#x\n", err,
1351 lcfg->lcfg_command);
1356 EXPORT_SYMBOL(class_process_config);
1358 ssize_t class_modify_config(struct lustre_cfg *lcfg, const char *prefix,
1359 struct kobject *kobj)
1361 struct kobj_type *typ;
1365 if (lcfg->lcfg_command != LCFG_PARAM) {
1366 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1370 typ = get_ktype(kobj);
1371 if (!typ || !typ->default_attrs)
1374 print_lustre_cfg(lcfg);
1377 * e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1378 * or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1379 * or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36
1381 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1382 struct attribute *attr;
1388 key = lustre_cfg_buf(lcfg, i);
1389 /* Strip off prefix */
1390 if (class_match_param(key, prefix, &key))
1391 /* If the prefix doesn't match, return error so we
1392 * can pass it down the stack
1396 value = strchr(key, '=');
1397 if (!value || *(value + 1) == 0) {
1398 CERROR("%s: can't parse param '%s' (missing '=')\n",
1399 lustre_cfg_string(lcfg, 0),
1400 lustre_cfg_string(lcfg, i));
1401 /* continue parsing other params */
1404 keylen = value - key;
1408 for (j = 0; typ->default_attrs[j]; j++) {
1409 if (!strncmp(typ->default_attrs[j]->name, key,
1411 attr = typ->default_attrs[j];
1419 envp[0] = kasprintf(GFP_KERNEL, "PARAM=%s.%s.%.*s",
1420 kobject_name(kobj->parent),
1423 envp[1] = kasprintf(GFP_KERNEL, "SETTING=%s", value);
1426 if (kobject_uevent_env(kobj, KOBJ_CHANGE, envp)) {
1427 CERROR("%s: failed to send uevent %s\n",
1428 kobject_name(kobj), key);
1431 for (i = 0; i < ARRAY_SIZE(envp); i++)
1434 count += lustre_attr_store(kobj, attr, value,
1440 EXPORT_SYMBOL(class_modify_config);
1442 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1443 struct lustre_cfg *lcfg, void *data)
1445 struct lprocfs_vars *var;
1446 struct file fakefile;
1447 struct seq_file fake_seqfile;
1449 int i, keylen, vallen;
1450 int matched = 0, j = 0;
1455 if (lcfg->lcfg_command != LCFG_PARAM) {
1456 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1460 /* fake a seq file so that var->fops->write can work... */
1461 fakefile.private_data = &fake_seqfile;
1462 fake_seqfile.private = data;
1463 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1464 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1465 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1466 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1467 key = lustre_cfg_buf(lcfg, i);
1468 /* Strip off prefix */
1469 if (class_match_param(key, prefix, &key))
1470 /* If the prefix doesn't match, return error so we
1471 * can pass it down the stack */
1473 sval = strchr(key, '=');
1474 if (!sval || *(sval + 1) == 0) {
1475 CERROR("%s: can't parse param '%s' (missing '=')\n",
1476 lustre_cfg_string(lcfg, 0),
1477 lustre_cfg_string(lcfg, i));
1478 /* rc = -EINVAL; continue parsing other params */
1481 keylen = sval - key;
1483 vallen = strlen(sval);
1486 /* Search proc entries */
1487 while (lvars[j].name) {
1489 if (class_match_param(key, var->name, NULL) == 0 &&
1490 keylen == strlen(var->name)) {
1494 if (var->fops && var->fops->write) {
1498 rc = (var->fops->write)(&fakefile, sval,
1507 /* It was upgraded from old MDT/OST device,
1508 * ignore the obsolete "sec_level" parameter. */
1509 if (strncmp("sec_level", key, keylen) == 0)
1512 CERROR("%s: unknown config parameter '%s'\n",
1513 lustre_cfg_string(lcfg, 0),
1514 lustre_cfg_string(lcfg, i));
1515 /* rc = -EINVAL; continue parsing other params */
1517 } else if (rc < 0) {
1518 CERROR("%s: error writing parameter '%s': rc = %d\n",
1519 lustre_cfg_string(lcfg, 0), key, rc);
1522 CDEBUG(D_CONFIG, "%s: set parameter '%s'\n",
1523 lustre_cfg_string(lcfg, 0), key);
1533 EXPORT_SYMBOL(class_process_proc_param);
1536 * Supplemental functions for config logs, it allocates lustre_cfg
1537 * buffers plus initialized llog record header at the beginning.
1539 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1541 struct llog_cfg_rec *lcr;
1546 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1547 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1548 sizeof(struct llog_rec_tail);
1550 OBD_ALLOC(lcr, reclen);
1554 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1556 lcr->lcr_hdr.lrh_len = reclen;
1557 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1561 EXPORT_SYMBOL(lustre_cfg_rec_new);
1563 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1566 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1569 EXPORT_SYMBOL(lustre_cfg_rec_free);
1571 /** Parse a configuration llog, doing various manipulations on them
1572 * for various reasons, (modifications for compatibility, skip obsolete
1573 * records, change uuids, etc), then class_process_config() resulting
1576 int class_config_llog_handler(const struct lu_env *env,
1577 struct llog_handle *handle,
1578 struct llog_rec_hdr *rec, void *data)
1580 struct config_llog_instance *cfg = data;
1581 int cfg_len = rec->lrh_len;
1582 char *cfg_buf = (char *) (rec + 1);
1586 /* class_config_dump_handler(handle, rec, data); */
1588 switch (rec->lrh_type) {
1590 struct lustre_cfg *lcfg, *lcfg_new;
1591 struct lustre_cfg_bufs bufs;
1592 char *inst_name = NULL;
1596 lcfg = (struct lustre_cfg *)cfg_buf;
1597 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1598 lustre_swab_lustre_cfg(lcfg);
1602 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1606 /* Figure out config state info */
1607 if (lcfg->lcfg_command == LCFG_MARKER) {
1608 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1609 lustre_swab_cfg_marker(marker, swab,
1610 LUSTRE_CFG_BUFLEN(lcfg, 1));
1611 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1612 cfg->cfg_flags, marker->cm_flags);
1613 if (marker->cm_flags & CM_START) {
1614 /* all previous flags off */
1615 cfg->cfg_flags = CFG_F_MARKER;
1616 server_name2index(marker->cm_tgtname,
1617 &cfg->cfg_lwp_idx, NULL);
1618 if (marker->cm_flags & CM_SKIP) {
1619 cfg->cfg_flags |= CFG_F_SKIP;
1620 CDEBUG(D_CONFIG, "SKIP #%d\n",
1622 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1624 lustre_check_exclusion(cfg->cfg_sb,
1625 marker->cm_tgtname))) {
1626 cfg->cfg_flags |= CFG_F_EXCLUDE;
1627 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1630 } else if (marker->cm_flags & CM_END) {
1634 /* A config command without a start marker before it is
1637 if (!(cfg->cfg_flags & CFG_F_MARKER) &&
1638 (lcfg->lcfg_command != LCFG_MARKER)) {
1639 CWARN("Skip config outside markers, (inst: %016lx, uuid: %s, flags: %#x)\n",
1641 cfg->cfg_uuid.uuid, cfg->cfg_flags);
1642 cfg->cfg_flags |= CFG_F_SKIP;
1644 if (cfg->cfg_flags & CFG_F_SKIP) {
1645 CDEBUG(D_CONFIG, "skipping %#x\n",
1648 /* No processing! */
1653 * For interoperability between 1.8 and 2.0,
1654 * rename "mds" obd device type to "mdt".
1657 char *typename = lustre_cfg_string(lcfg, 1);
1658 char *index = lustre_cfg_string(lcfg, 2);
1660 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1661 strcmp(typename, "mds") == 0)) {
1662 CWARN("For 1.8 interoperability, rename obd "
1663 "type from mds to mdt\n");
1666 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1667 strcmp(index, "type") == 0)) {
1668 CDEBUG(D_INFO, "For 1.8 interoperability, "
1669 "set this index to '0'\n");
1675 #ifdef HAVE_SERVER_SUPPORT
1676 /* newer MDS replaces LOV/OSC with LOD/OSP */
1678 char *typename = lustre_cfg_string(lcfg, 1);
1680 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1681 strcmp(typename, LUSTRE_LOV_NAME) == 0) &&
1682 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1684 "For 2.x interoperability, rename obd "
1685 "type from lov to lod (%s)\n",
1686 s2lsi(cfg->cfg_sb)->lsi_svname);
1687 strcpy(typename, LUSTRE_LOD_NAME);
1689 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1690 strcmp(typename, LUSTRE_OSC_NAME) == 0) &&
1691 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1693 "For 2.x interoperability, rename obd "
1694 "type from osc to osp (%s)\n",
1695 s2lsi(cfg->cfg_sb)->lsi_svname);
1696 strcpy(typename, LUSTRE_OSP_NAME);
1699 #endif /* HAVE_SERVER_SUPPORT */
1701 if (cfg->cfg_flags & CFG_F_EXCLUDE) {
1702 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1703 lcfg->lcfg_command);
1704 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1705 /* Add inactive instead */
1706 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1709 lustre_cfg_bufs_reset(&bufs, NULL);
1710 lustre_cfg_bufs_init(&bufs, lcfg);
1712 if (cfg->cfg_instance &&
1713 lcfg->lcfg_command != LCFG_SPTLRPC_CONF &&
1714 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1715 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) + 16 + 4;
1716 OBD_ALLOC(inst_name, inst_len);
1717 if (inst_name == NULL)
1718 GOTO(out, rc = -ENOMEM);
1719 snprintf(inst_name, inst_len, "%s-%016lx",
1720 lustre_cfg_string(lcfg, 0),
1722 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1723 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1724 lcfg->lcfg_command, inst_name);
1727 /* override llog UUID for clients, to insure they are unique */
1728 if (cfg->cfg_instance && lcfg->lcfg_command == LCFG_ATTACH)
1729 lustre_cfg_bufs_set_string(&bufs, 2,
1730 cfg->cfg_uuid.uuid);
1732 * sptlrpc config record, we expect 2 data segments:
1733 * [0]: fs_name/target_name,
1735 * moving them to index [1] and [2], and insert MGC's
1736 * obdname at index [0].
1738 if (cfg->cfg_instance &&
1739 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1740 /* After ASLR changes cfg_instance this needs fixing */
1741 /* "obd" is set in config_log_find_or_add() */
1742 struct obd_device *obd = (void *)cfg->cfg_instance;
1744 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1745 bufs.lcfg_buflen[1]);
1746 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1747 bufs.lcfg_buflen[0]);
1748 lustre_cfg_bufs_set_string(&bufs, 0,
1752 /* Add net info to setup command
1753 * if given on command line.
1754 * So config log will be:
1758 * [3]: inactive-on-startup
1759 * [4]: restrictive net
1761 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1762 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1763 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1764 char *nidnet = lsi->lsi_lmd->lmd_nidnet;
1766 if (lcfg->lcfg_command == LCFG_SETUP &&
1767 lcfg->lcfg_bufcount != 2 && nidnet) {
1768 CDEBUG(D_CONFIG, "Adding net %s info to setup "
1769 "command for client %s\n", nidnet,
1770 lustre_cfg_string(lcfg, 0));
1771 lustre_cfg_bufs_set_string(&bufs, 4, nidnet);
1775 /* Skip add_conn command if uuid is
1776 * not on restricted net */
1777 if (cfg && cfg->cfg_sb && s2lsi(cfg->cfg_sb) &&
1778 !IS_SERVER(s2lsi(cfg->cfg_sb))) {
1779 struct lustre_sb_info *lsi = s2lsi(cfg->cfg_sb);
1780 char *uuid_str = lustre_cfg_string(lcfg, 1);
1782 if (lcfg->lcfg_command == LCFG_ADD_CONN &&
1783 lsi->lsi_lmd->lmd_nidnet &&
1784 LNET_NIDNET(libcfs_str2nid(uuid_str)) !=
1785 libcfs_str2net(lsi->lsi_lmd->lmd_nidnet)) {
1786 CDEBUG(D_CONFIG, "skipping add_conn for %s\n",
1789 /* No processing! */
1794 OBD_ALLOC(lcfg_new, lustre_cfg_len(bufs.lcfg_bufcount,
1797 GOTO(out, rc = -ENOMEM);
1799 lustre_cfg_init(lcfg_new, lcfg->lcfg_command, &bufs);
1800 lcfg_new->lcfg_num = lcfg->lcfg_num;
1801 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1803 /* XXX Hack to try to remain binary compatible with
1804 * pre-newconfig logs */
1805 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1806 (lcfg->lcfg_nid >> 32) == 0) {
1807 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1809 lcfg_new->lcfg_nid =
1810 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1811 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1812 lcfg->lcfg_nal, addr,
1813 libcfs_nid2str(lcfg_new->lcfg_nid));
1815 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1818 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1820 rc = class_process_config(lcfg_new);
1821 OBD_FREE(lcfg_new, lustre_cfg_len(lcfg_new->lcfg_bufcount,
1822 lcfg_new->lcfg_buflens));
1824 OBD_FREE(inst_name, inst_len);
1828 CERROR("Unknown llog record type %#x encountered\n",
1834 CERROR("%s: cfg command failed: rc = %d\n",
1835 handle->lgh_ctxt->loc_obd->obd_name, rc);
1836 class_config_dump_handler(NULL, handle, rec, data);
1840 EXPORT_SYMBOL(class_config_llog_handler);
1842 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1843 char *name, struct config_llog_instance *cfg)
1845 struct llog_process_cat_data cd = {
1846 .lpcd_first_idx = 0,
1848 struct llog_handle *llh;
1853 CDEBUG(D_INFO, "looking up llog %s\n", name);
1854 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1858 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1860 GOTO(parse_out, rc);
1862 /* continue processing from where we last stopped to end-of-log */
1864 cd.lpcd_first_idx = cfg->cfg_last_idx;
1865 callback = cfg->cfg_callback;
1866 LASSERT(callback != NULL);
1868 callback = class_config_llog_handler;
1871 cd.lpcd_last_idx = 0;
1873 rc = llog_process(env, llh, callback, cfg, &cd);
1875 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1876 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1878 cfg->cfg_last_idx = cd.lpcd_last_idx;
1881 llog_close(env, llh);
1884 EXPORT_SYMBOL(class_config_parse_llog);
1887 * Parse config record and output dump in supplied buffer.
1889 * This is separated from class_config_dump_handler() to use
1890 * for ioctl needs as well
1893 * - { index: 4, event: attach, device: lustrewt-clilov, type: lov,
1894 * UUID: lustrewt-clilov_UUID }
1896 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size)
1898 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1900 char *end = buf + size;
1902 struct lcfg_type_data *ldata;
1904 LASSERT(rec->lrh_type == OBD_CFG_REC);
1905 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1909 ldata = lcfg_cmd2data(lcfg->lcfg_command);
1913 if (lcfg->lcfg_command == LCFG_MARKER)
1916 /* form YAML entity */
1917 ptr += snprintf(ptr, end - ptr, "- { index: %u, event: %s",
1918 rec->lrh_index, ldata->ltd_name);
1922 if (lcfg->lcfg_flags) {
1923 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
1928 if (lcfg->lcfg_num) {
1929 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
1934 if (lcfg->lcfg_nid) {
1935 char nidstr[LNET_NIDSTR_SIZE];
1937 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1938 ptr += snprintf(ptr, end - ptr, ", nid: %s(%#llx)",
1939 nidstr, lcfg->lcfg_nid);
1944 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1945 ptr += snprintf(ptr, end - ptr, ", device: %s",
1946 lustre_cfg_string(lcfg, 0));
1951 if (lcfg->lcfg_command == LCFG_SET_PARAM) {
1953 * set_param -P parameters have param=val here, separate
1954 * them through pointer magic and print them out in
1957 char *cfg_str = lustre_cfg_string(lcfg, 1);
1958 char *tmp = strchr(cfg_str, '=');
1964 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[0]);
1965 len = tmp - cfg_str + 1;
1966 snprintf(ptr, len, "%s", cfg_str);
1969 ptr += snprintf(ptr, end - ptr, ", %s: ", ldata->ltd_bufs[1]);
1970 ptr += snprintf(ptr, end - ptr, "%s", tmp + 1);
1975 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1976 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0) {
1977 ptr += snprintf(ptr, end - ptr, ", %s: %s",
1978 ldata->ltd_bufs[i - 1],
1979 lustre_cfg_string(lcfg, i));
1986 ptr += snprintf(ptr, end - ptr, " }\n");
1988 /* Return consumed bytes. If the buffer overflowed, zero last byte */
1999 * parse config record and output dump in supplied buffer.
2000 * This is separated from class_config_dump_handler() to use
2001 * for ioctl needs as well
2003 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
2005 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
2007 char *end = buf + size;
2012 LASSERT(rec->lrh_type == OBD_CFG_REC);
2013 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
2017 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
2018 if (lcfg->lcfg_flags)
2019 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
2023 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
2025 if (lcfg->lcfg_nid) {
2026 char nidstr[LNET_NIDSTR_SIZE];
2028 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
2029 ptr += snprintf(ptr, end-ptr, "nid=%s(%#llx)\n ",
2030 nidstr, lcfg->lcfg_nid);
2033 if (lcfg->lcfg_command == LCFG_MARKER) {
2034 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
2036 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
2037 marker->cm_step, marker->cm_flags,
2038 marker->cm_tgtname, marker->cm_comment);
2042 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
2043 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
2044 lustre_cfg_string(lcfg, i));
2047 ptr += snprintf(ptr, end - ptr, "\n");
2048 /* return consumed bytes */
2053 int class_config_dump_handler(const struct lu_env *env,
2054 struct llog_handle *handle,
2055 struct llog_rec_hdr *rec, void *data)
2062 OBD_ALLOC(outstr, 256);
2066 if (rec->lrh_type == OBD_CFG_REC) {
2067 class_config_parse_rec(rec, outstr, 256);
2068 LCONSOLE(D_WARNING, " %s\n", outstr);
2070 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
2074 OBD_FREE(outstr, 256);
2078 /** Call class_cleanup and class_detach.
2079 * "Manual" only in the sense that we're faking lcfg commands.
2081 int class_manual_cleanup(struct obd_device *obd)
2084 struct lustre_cfg *lcfg;
2085 struct lustre_cfg_bufs bufs;
2090 CERROR("empty cleanup\n");
2099 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
2100 obd->obd_name, flags);
2102 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
2103 lustre_cfg_bufs_set_string(&bufs, 1, flags);
2104 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
2107 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
2109 rc = class_process_config(lcfg);
2111 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
2115 /* the lcfg is almost the same for both ops */
2116 lcfg->lcfg_command = LCFG_DETACH;
2117 rc = class_process_config(lcfg);
2119 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
2121 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
2124 EXPORT_SYMBOL(class_manual_cleanup);
2127 * uuid<->export lustre hash operations
2131 uuid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2133 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
2134 sizeof(((struct obd_uuid *)key)->uuid), mask);
2138 uuid_key(struct hlist_node *hnode)
2140 struct obd_export *exp;
2142 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2144 return &exp->exp_client_uuid;
2148 * NOTE: It is impossible to find an export that is in failed
2149 * state with this function
2152 uuid_keycmp(const void *key, struct hlist_node *hnode)
2154 struct obd_export *exp;
2157 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2159 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
2164 uuid_export_object(struct hlist_node *hnode)
2166 return hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2170 uuid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2172 struct obd_export *exp;
2174 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2175 class_export_get(exp);
2179 uuid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2181 struct obd_export *exp;
2183 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2184 class_export_put(exp);
2187 static struct cfs_hash_ops uuid_hash_ops = {
2188 .hs_hash = uuid_hash,
2190 .hs_keycmp = uuid_keycmp,
2191 .hs_object = uuid_export_object,
2192 .hs_get = uuid_export_get,
2193 .hs_put_locked = uuid_export_put_locked,
2198 * nid<->export hash operations
2202 nid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2204 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
2208 nid_key(struct hlist_node *hnode)
2210 struct obd_export *exp;
2212 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2214 RETURN(&exp->exp_connection->c_peer.nid);
2218 * NOTE: It is impossible to find an export that is in failed
2219 * state with this function
2222 nid_kepcmp(const void *key, struct hlist_node *hnode)
2224 struct obd_export *exp;
2227 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2229 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
2234 nid_export_object(struct hlist_node *hnode)
2236 return hlist_entry(hnode, struct obd_export, exp_nid_hash);
2240 nid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2242 struct obd_export *exp;
2244 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2245 class_export_get(exp);
2249 nid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2251 struct obd_export *exp;
2253 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2254 class_export_put(exp);
2257 static struct cfs_hash_ops nid_hash_ops = {
2258 .hs_hash = nid_hash,
2260 .hs_keycmp = nid_kepcmp,
2261 .hs_object = nid_export_object,
2262 .hs_get = nid_export_get,
2263 .hs_put_locked = nid_export_put_locked,
2268 * nid<->nidstats hash operations
2272 nidstats_key(struct hlist_node *hnode)
2274 struct nid_stat *ns;
2276 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2282 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2284 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
2288 nidstats_object(struct hlist_node *hnode)
2290 return hlist_entry(hnode, struct nid_stat, nid_hash);
2294 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2296 struct nid_stat *ns;
2298 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2303 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2305 struct nid_stat *ns;
2307 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2311 static struct cfs_hash_ops nid_stat_hash_ops = {
2312 .hs_hash = nid_hash,
2313 .hs_key = nidstats_key,
2314 .hs_keycmp = nidstats_keycmp,
2315 .hs_object = nidstats_object,
2316 .hs_get = nidstats_get,
2317 .hs_put_locked = nidstats_put_locked,
2322 * client_generation<->export hash operations
2326 gen_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2328 return cfs_hash_djb2_hash(key, sizeof(__u32), mask);
2332 gen_key(struct hlist_node *hnode)
2334 struct obd_export *exp;
2336 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2338 RETURN(&exp->exp_target_data.ted_lcd->lcd_generation);
2342 * NOTE: It is impossible to find an export that is in failed
2343 * state with this function
2346 gen_kepcmp(const void *key, struct hlist_node *hnode)
2348 struct obd_export *exp;
2351 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2353 RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key &&
2358 gen_export_object(struct hlist_node *hnode)
2360 return hlist_entry(hnode, struct obd_export, exp_gen_hash);
2364 gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2366 struct obd_export *exp;
2368 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2369 class_export_get(exp);
2373 gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2375 struct obd_export *exp;
2377 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2378 class_export_put(exp);
2381 static struct cfs_hash_ops gen_hash_ops = {
2382 .hs_hash = gen_hash,
2384 .hs_keycmp = gen_kepcmp,
2385 .hs_object = gen_export_object,
2386 .hs_get = gen_export_get,
2387 .hs_put_locked = gen_export_put_locked,