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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/obdclass/obd_config.c
41 #define DEBUG_SUBSYSTEM S_CLASS
43 #include <linux/string.h>
45 #include <llog_swab.h>
46 #include <lprocfs_status.h>
47 #include <lustre_disk.h>
48 #include <lustre_ioctl.h>
49 #include <lustre_log.h>
50 #include <lustre_param.h>
51 #include <obd_class.h>
53 #include "llog_internal.h"
55 static struct cfs_hash_ops uuid_hash_ops;
56 static struct cfs_hash_ops nid_hash_ops;
57 static struct cfs_hash_ops nid_stat_hash_ops;
58 static struct cfs_hash_ops gen_hash_ops;
60 /*********** string parsing utils *********/
62 /* returns 0 if we find this key in the buffer, else 1 */
63 int class_find_param(char *buf, char *key, char **valp)
70 if ((ptr = strstr(buf, key)) == NULL)
74 *valp = ptr + strlen(key);
78 EXPORT_SYMBOL(class_find_param);
81 * Check whether the proc parameter \a param is an old parameter or not from
82 * the array \a ptr which contains the mapping from old parameters to new ones.
83 * If it's an old one, then return the pointer to the cfg_interop_param struc-
84 * ture which contains both the old and new parameters.
86 * \param param proc parameter
87 * \param ptr an array which contains the mapping from
88 * old parameters to new ones
90 * \retval valid-pointer pointer to the cfg_interop_param structure
91 * which contains the old and new parameters
92 * \retval NULL \a param or \a ptr is NULL,
93 * or \a param is not an old parameter
95 struct cfg_interop_param *class_find_old_param(const char *param,
96 struct cfg_interop_param *ptr)
101 if (param == NULL || ptr == NULL)
104 value = strchr(param, '=');
106 name_len = strlen(param);
108 name_len = value - param;
110 while (ptr->old_param != NULL) {
111 if (strncmp(param, ptr->old_param, name_len) == 0 &&
112 name_len == strlen(ptr->old_param))
119 EXPORT_SYMBOL(class_find_old_param);
122 * Finds a parameter in \a params and copies it to \a copy.
124 * Leading spaces are skipped. Next space or end of string is the
125 * parameter terminator with the exception that spaces inside single or double
126 * quotes get included into a parameter. The parameter is copied into \a copy
127 * which has to be allocated big enough by a caller, quotes are stripped in
128 * the copy and the copy is terminated by 0.
130 * On return \a params is set to next parameter or to NULL if last
131 * parameter is returned.
133 * \retval 0 if parameter is returned in \a copy
134 * \retval 1 otherwise
135 * \retval -EINVAL if unbalanced quota is found
137 int class_get_next_param(char **params, char *copy)
152 q1 = strpbrk(str, " '\"");
155 memcpy(copy, str, len);
162 memcpy(copy, str, len);
168 memcpy(copy, str, len);
171 /* search for the matching closing quote */
173 q2 = strchr(str, *q1);
175 CERROR("Unbalanced quota in parameters: \"%s\"\n",
180 memcpy(copy, str, len);
186 EXPORT_SYMBOL(class_get_next_param);
188 /* returns 0 if this is the first key in the buffer, else 1.
189 valp points to first char after key. */
190 int class_match_param(char *buf, const char *key, char **valp)
195 if (memcmp(buf, key, strlen(key)) != 0)
199 *valp = buf + strlen(key);
203 EXPORT_SYMBOL(class_match_param);
205 static int parse_nid(char *buf, void *value, int quiet)
207 lnet_nid_t *nid = (lnet_nid_t *)value;
209 *nid = libcfs_str2nid(buf);
210 if (*nid != LNET_NID_ANY)
214 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
218 static int parse_net(char *buf, void *value)
220 __u32 *net = (__u32 *)value;
222 *net = libcfs_str2net(buf);
223 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
235 endh is set to next separator */
236 static int class_parse_value(char *buf, int opc, void *value, char **endh,
245 while (*buf == ',' || *buf == ':')
247 if (*buf == ' ' || *buf == '/' || *buf == '\0')
250 /* nid separators or end of nids */
251 endp = strpbrk(buf, ",: /");
253 endp = buf + strlen(buf);
260 case CLASS_PARSE_NID:
261 rc = parse_nid(buf, value, quiet);
263 case CLASS_PARSE_NET:
264 rc = parse_net(buf, value);
275 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
277 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 0);
279 EXPORT_SYMBOL(class_parse_nid);
281 int class_parse_nid_quiet(char *buf, lnet_nid_t *nid, char **endh)
283 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh, 1);
285 EXPORT_SYMBOL(class_parse_nid_quiet);
287 int class_parse_net(char *buf, __u32 *net, char **endh)
289 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh, 0);
292 /* 1 param contains key and match
293 * 0 param contains key and not match
294 * -1 param does not contain key
296 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
301 while (class_find_param(buf, key, &buf) == 0) {
302 /* please restrict to the nids pertaining to
303 * the specified nids */
304 while (class_parse_nid(buf, &tmp, &buf) == 0) {
313 int class_match_net(char *buf, char *key, __u32 net)
318 while (class_find_param(buf, key, &buf) == 0) {
319 /* please restrict to the nids pertaining to
320 * the specified networks */
321 while (class_parse_net(buf, &tmp, &buf) == 0) {
330 /********************** class fns **********************/
333 * Create a new obd device and set the type, name and uuid. If successful,
334 * the new device can be accessed by either name or uuid.
336 int class_attach(struct lustre_cfg *lcfg)
338 struct obd_device *obd = NULL;
339 char *typename, *name, *uuid;
343 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
344 CERROR("No type passed!\n");
347 typename = lustre_cfg_string(lcfg, 1);
349 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
350 CERROR("No name passed!\n");
353 name = lustre_cfg_string(lcfg, 0);
355 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
356 CERROR("No UUID passed!\n");
359 uuid = lustre_cfg_string(lcfg, 2);
361 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
362 MKSTR(typename), MKSTR(name), MKSTR(uuid));
364 obd = class_newdev(typename, name);
366 /* Already exists or out of obds */
369 CERROR("Cannot create device %s of type %s : %d\n",
373 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
375 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
376 "obd %p obd_magic %08X != %08X\n",
377 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
378 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
379 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
381 rwlock_init(&obd->obd_pool_lock);
382 obd->obd_pool_limit = 0;
383 obd->obd_pool_slv = 0;
385 INIT_LIST_HEAD(&obd->obd_exports);
386 INIT_LIST_HEAD(&obd->obd_unlinked_exports);
387 INIT_LIST_HEAD(&obd->obd_delayed_exports);
388 INIT_LIST_HEAD(&obd->obd_exports_timed);
389 INIT_LIST_HEAD(&obd->obd_nid_stats);
390 spin_lock_init(&obd->obd_nid_lock);
391 spin_lock_init(&obd->obd_dev_lock);
392 mutex_init(&obd->obd_dev_mutex);
393 spin_lock_init(&obd->obd_osfs_lock);
394 /* obd->obd_osfs_age must be set to a value in the distant
395 * past to guarantee a fresh statfs is fetched on mount. */
396 obd->obd_osfs_age = cfs_time_shift_64(-1000);
398 /* XXX belongs in setup not attach */
399 init_rwsem(&obd->obd_observer_link_sem);
401 cfs_init_timer(&obd->obd_recovery_timer);
402 spin_lock_init(&obd->obd_recovery_task_lock);
403 init_waitqueue_head(&obd->obd_next_transno_waitq);
404 init_waitqueue_head(&obd->obd_evict_inprogress_waitq);
405 INIT_LIST_HEAD(&obd->obd_req_replay_queue);
406 INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
407 INIT_LIST_HEAD(&obd->obd_final_req_queue);
408 INIT_LIST_HEAD(&obd->obd_evict_list);
409 INIT_LIST_HEAD(&obd->obd_lwp_list);
411 llog_group_init(&obd->obd_olg);
413 obd->obd_conn_inprogress = 0;
416 if (len >= sizeof(obd->obd_uuid)) {
417 CERROR("uuid must be < %d bytes long\n",
418 (int)sizeof(obd->obd_uuid));
419 GOTO(out, rc = -EINVAL);
421 memcpy(obd->obd_uuid.uuid, uuid, len);
423 /* Detach drops this */
424 spin_lock(&obd->obd_dev_lock);
425 atomic_set(&obd->obd_refcount, 1);
426 spin_unlock(&obd->obd_dev_lock);
427 lu_ref_init(&obd->obd_reference);
428 lu_ref_add(&obd->obd_reference, "attach", obd);
430 obd->obd_attached = 1;
431 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
432 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
436 class_release_dev(obd);
440 EXPORT_SYMBOL(class_attach);
442 /** Create hashes, self-export, and call type-specific setup.
443 * Setup is effectively the "start this obd" call.
445 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
448 struct obd_export *exp;
451 LASSERT(obd != NULL);
452 LASSERTF(obd == class_num2obd(obd->obd_minor),
453 "obd %p != obd_devs[%d] %p\n",
454 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
455 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
456 "obd %p obd_magic %08x != %08x\n",
457 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
459 /* have we attached a type to this device? */
460 if (!obd->obd_attached) {
461 CERROR("Device %d not attached\n", obd->obd_minor);
465 if (obd->obd_set_up) {
466 CERROR("Device %d already setup (type %s)\n",
467 obd->obd_minor, obd->obd_type->typ_name);
471 /* is someone else setting us up right now? (attach inits spinlock) */
472 spin_lock(&obd->obd_dev_lock);
473 if (obd->obd_starting) {
474 spin_unlock(&obd->obd_dev_lock);
475 CERROR("Device %d setup in progress (type %s)\n",
476 obd->obd_minor, obd->obd_type->typ_name);
479 /* just leave this on forever. I can't use obd_set_up here because
480 other fns check that status, and we're not actually set up yet. */
481 obd->obd_starting = 1;
482 obd->obd_uuid_hash = NULL;
483 obd->obd_nid_hash = NULL;
484 obd->obd_nid_stats_hash = NULL;
485 obd->obd_gen_hash = NULL;
486 spin_unlock(&obd->obd_dev_lock);
488 /* create an uuid-export lustre hash */
489 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
492 HASH_UUID_BKT_BITS, 0,
495 &uuid_hash_ops, CFS_HASH_DEFAULT);
496 if (!obd->obd_uuid_hash)
497 GOTO(err_hash, err = -ENOMEM);
499 /* create a nid-export lustre hash */
500 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
503 HASH_NID_BKT_BITS, 0,
506 &nid_hash_ops, CFS_HASH_DEFAULT);
507 if (!obd->obd_nid_hash)
508 GOTO(err_hash, err = -ENOMEM);
510 /* create a nid-stats lustre hash */
511 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
512 HASH_NID_STATS_CUR_BITS,
513 HASH_NID_STATS_MAX_BITS,
514 HASH_NID_STATS_BKT_BITS, 0,
517 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
518 if (!obd->obd_nid_stats_hash)
519 GOTO(err_hash, err = -ENOMEM);
521 /* create a client_generation-export lustre hash */
522 obd->obd_gen_hash = cfs_hash_create("UUID_HASH",
525 HASH_GEN_BKT_BITS, 0,
528 &gen_hash_ops, CFS_HASH_DEFAULT);
529 if (!obd->obd_gen_hash)
530 GOTO(err_hash, err = -ENOMEM);
532 exp = class_new_export(obd, &obd->obd_uuid);
534 GOTO(err_hash, err = PTR_ERR(exp));
536 obd->obd_self_export = exp;
537 list_del_init(&exp->exp_obd_chain_timed);
538 class_export_put(exp);
540 err = obd_setup(obd, lcfg);
546 spin_lock(&obd->obd_dev_lock);
547 /* cleanup drops this */
548 class_incref(obd, "setup", obd);
549 spin_unlock(&obd->obd_dev_lock);
551 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
552 obd->obd_name, obd->obd_uuid.uuid);
556 if (obd->obd_self_export) {
557 class_unlink_export(obd->obd_self_export);
558 obd->obd_self_export = NULL;
561 if (obd->obd_uuid_hash) {
562 cfs_hash_putref(obd->obd_uuid_hash);
563 obd->obd_uuid_hash = NULL;
565 if (obd->obd_nid_hash) {
566 cfs_hash_putref(obd->obd_nid_hash);
567 obd->obd_nid_hash = NULL;
569 if (obd->obd_nid_stats_hash) {
570 cfs_hash_putref(obd->obd_nid_stats_hash);
571 obd->obd_nid_stats_hash = NULL;
573 if (obd->obd_gen_hash) {
574 cfs_hash_putref(obd->obd_gen_hash);
575 obd->obd_gen_hash = NULL;
577 obd->obd_starting = 0;
578 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
581 EXPORT_SYMBOL(class_setup);
583 /** We have finished using this obd and are ready to destroy it.
584 * There can be no more references to this obd.
586 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
590 if (obd->obd_set_up) {
591 CERROR("OBD device %d still set up\n", obd->obd_minor);
595 spin_lock(&obd->obd_dev_lock);
596 if (!obd->obd_attached) {
597 spin_unlock(&obd->obd_dev_lock);
598 CERROR("OBD device %d not attached\n", obd->obd_minor);
601 obd->obd_attached = 0;
602 spin_unlock(&obd->obd_dev_lock);
604 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
605 obd->obd_name, obd->obd_uuid.uuid);
607 class_decref(obd, "attach", obd);
610 EXPORT_SYMBOL(class_detach);
612 /** Start shutting down the obd. There may be in-progess ops when
613 * this is called. We tell them to start shutting down with a call
614 * to class_disconnect_exports().
616 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
622 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
624 if (!obd->obd_set_up) {
625 CERROR("Device %d not setup\n", obd->obd_minor);
629 spin_lock(&obd->obd_dev_lock);
630 if (obd->obd_stopping) {
631 spin_unlock(&obd->obd_dev_lock);
632 CERROR("OBD %d already stopping\n", obd->obd_minor);
635 /* Leave this on forever */
636 obd->obd_stopping = 1;
637 spin_unlock(&obd->obd_dev_lock);
639 /* wait for already-arrived-connections to finish. */
640 while (obd->obd_conn_inprogress > 0)
644 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
645 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
651 LCONSOLE_WARN("Failing over %s\n",
654 obd->obd_no_transno = 1;
655 obd->obd_no_recov = 1;
656 if (OBP(obd, iocontrol)) {
657 obd_iocontrol(OBD_IOC_SYNC,
658 obd->obd_self_export,
663 CERROR("Unrecognised flag '%c'\n", *flag);
667 LASSERT(obd->obd_self_export);
669 /* The three references that should be remaining are the
670 * obd_self_export and the attach and setup references. */
671 if (atomic_read(&obd->obd_refcount) > 3) {
672 /* refcounf - 3 might be the number of real exports
673 (excluding self export). But class_incref is called
674 by other things as well, so don't count on it. */
675 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
676 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
677 dump_exports(obd, 0);
678 class_disconnect_exports(obd);
681 /* Precleanup, we must make sure all exports get destroyed. */
682 err = obd_precleanup(obd);
684 CERROR("Precleanup %s returned %d\n",
687 /* destroy an uuid-export hash body */
688 if (obd->obd_uuid_hash) {
689 cfs_hash_putref(obd->obd_uuid_hash);
690 obd->obd_uuid_hash = NULL;
693 /* destroy a nid-export hash body */
694 if (obd->obd_nid_hash) {
695 cfs_hash_putref(obd->obd_nid_hash);
696 obd->obd_nid_hash = NULL;
699 /* destroy a nid-stats hash body */
700 if (obd->obd_nid_stats_hash) {
701 cfs_hash_putref(obd->obd_nid_stats_hash);
702 obd->obd_nid_stats_hash = NULL;
705 /* destroy a client_generation-export hash body */
706 if (obd->obd_gen_hash) {
707 cfs_hash_putref(obd->obd_gen_hash);
708 obd->obd_gen_hash = NULL;
711 class_decref(obd, "setup", obd);
717 struct obd_device *class_incref(struct obd_device *obd,
718 const char *scope, const void *source)
720 lu_ref_add_atomic(&obd->obd_reference, scope, source);
721 atomic_inc(&obd->obd_refcount);
722 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
723 atomic_read(&obd->obd_refcount));
727 EXPORT_SYMBOL(class_incref);
729 void class_decref(struct obd_device *obd, const char *scope, const void *source)
734 spin_lock(&obd->obd_dev_lock);
735 atomic_dec(&obd->obd_refcount);
736 refs = atomic_read(&obd->obd_refcount);
737 spin_unlock(&obd->obd_dev_lock);
738 lu_ref_del(&obd->obd_reference, scope, source);
740 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
742 if ((refs == 1) && obd->obd_stopping) {
743 /* All exports have been destroyed; there should
744 be no more in-progress ops by this point.*/
746 spin_lock(&obd->obd_self_export->exp_lock);
747 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
748 spin_unlock(&obd->obd_self_export->exp_lock);
750 /* note that we'll recurse into class_decref again */
751 class_unlink_export(obd->obd_self_export);
756 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
757 obd->obd_name, obd->obd_uuid.uuid);
758 LASSERT(!obd->obd_attached);
759 if (obd->obd_stopping) {
760 /* If we're not stopping, we were never set up */
761 err = obd_cleanup(obd);
763 CERROR("Cleanup %s returned %d\n",
767 class_release_dev(obd);
770 EXPORT_SYMBOL(class_decref);
772 /** Add a failover nid location.
773 * Client obd types contact server obd types using this nid list.
775 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
777 struct obd_import *imp;
778 struct obd_uuid uuid;
782 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
783 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
784 CERROR("invalid conn_uuid\n");
787 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
788 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
789 strcmp(obd->obd_type->typ_name, LUSTRE_OSP_NAME) &&
790 strcmp(obd->obd_type->typ_name, LUSTRE_LWP_NAME) &&
791 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
792 CERROR("can't add connection on non-client dev\n");
796 imp = obd->u.cli.cl_import;
798 CERROR("try to add conn on immature client dev\n");
802 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
803 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
808 /** Remove a failover nid location.
810 static int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
812 struct obd_import *imp;
813 struct obd_uuid uuid;
817 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
818 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
819 CERROR("invalid conn_uuid\n");
822 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
823 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
824 CERROR("can't del connection on non-client dev\n");
828 imp = obd->u.cli.cl_import;
830 CERROR("try to del conn on immature client dev\n");
834 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
835 rc = obd_del_conn(imp, &uuid);
840 static struct list_head lustre_profile_list =
841 LIST_HEAD_INIT(lustre_profile_list);
842 static DEFINE_SPINLOCK(lustre_profile_list_lock);
844 struct lustre_profile *class_get_profile(const char * prof)
846 struct lustre_profile *lprof;
849 spin_lock(&lustre_profile_list_lock);
850 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
851 if (!strcmp(lprof->lp_profile, prof)) {
853 spin_unlock(&lustre_profile_list_lock);
857 spin_unlock(&lustre_profile_list_lock);
860 EXPORT_SYMBOL(class_get_profile);
862 /** Create a named "profile".
863 * This defines the mdc and osc names to use for a client.
864 * This also is used to define the lov to be used by a mdt.
866 static int class_add_profile(int proflen, char *prof, int osclen, char *osc,
867 int mdclen, char *mdc)
869 struct lustre_profile *lprof;
873 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
875 OBD_ALLOC(lprof, sizeof(*lprof));
878 INIT_LIST_HEAD(&lprof->lp_list);
880 LASSERT(proflen == (strlen(prof) + 1));
881 OBD_ALLOC(lprof->lp_profile, proflen);
882 if (lprof->lp_profile == NULL)
883 GOTO(out, err = -ENOMEM);
884 memcpy(lprof->lp_profile, prof, proflen);
886 LASSERT(osclen == (strlen(osc) + 1));
887 OBD_ALLOC(lprof->lp_dt, osclen);
888 if (lprof->lp_dt == NULL)
889 GOTO(out, err = -ENOMEM);
890 memcpy(lprof->lp_dt, osc, osclen);
893 LASSERT(mdclen == (strlen(mdc) + 1));
894 OBD_ALLOC(lprof->lp_md, mdclen);
895 if (lprof->lp_md == NULL)
896 GOTO(out, err = -ENOMEM);
897 memcpy(lprof->lp_md, mdc, mdclen);
900 spin_lock(&lustre_profile_list_lock);
902 lprof->lp_list_deleted = false;
904 list_add(&lprof->lp_list, &lustre_profile_list);
905 spin_unlock(&lustre_profile_list_lock);
910 OBD_FREE(lprof->lp_md, mdclen);
912 OBD_FREE(lprof->lp_dt, osclen);
913 if (lprof->lp_profile)
914 OBD_FREE(lprof->lp_profile, proflen);
915 OBD_FREE(lprof, sizeof(*lprof));
919 void class_del_profile(const char *prof)
921 struct lustre_profile *lprof;
924 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
926 lprof = class_get_profile(prof);
928 spin_lock(&lustre_profile_list_lock);
929 /* because get profile increments the ref counter */
931 list_del(&lprof->lp_list);
932 lprof->lp_list_deleted = true;
933 spin_unlock(&lustre_profile_list_lock);
935 class_put_profile(lprof);
939 EXPORT_SYMBOL(class_del_profile);
941 void class_put_profile(struct lustre_profile *lprof)
943 spin_lock(&lustre_profile_list_lock);
944 if ((--lprof->lp_refs) > 0) {
945 LASSERT(lprof->lp_refs > 0);
946 spin_unlock(&lustre_profile_list_lock);
949 spin_unlock(&lustre_profile_list_lock);
951 /* confirm not a negative number */
952 LASSERT(lprof->lp_refs == 0);
954 /* At least one class_del_profile/profiles must be called
955 * on the target profile or lustre_profile_list will corrupt */
956 LASSERT(lprof->lp_list_deleted);
957 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
958 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
959 if (lprof->lp_md != NULL)
960 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
961 OBD_FREE(lprof, sizeof(*lprof));
963 EXPORT_SYMBOL(class_put_profile);
966 void class_del_profiles(void)
968 struct lustre_profile *lprof, *n;
971 spin_lock(&lustre_profile_list_lock);
972 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
973 list_del(&lprof->lp_list);
974 lprof->lp_list_deleted = true;
975 spin_unlock(&lustre_profile_list_lock);
977 class_put_profile(lprof);
979 spin_lock(&lustre_profile_list_lock);
981 spin_unlock(&lustre_profile_list_lock);
984 EXPORT_SYMBOL(class_del_profiles);
986 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
989 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
991 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
993 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
995 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
996 at_early_margin = val;
997 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
999 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0)
1000 strlcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
1001 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
1005 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
1010 /* We can't call ll_process_config or lquota_process_config directly because
1011 * it lives in a module that must be loaded after this one. */
1012 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
1013 static int (*quota_process_config)(struct lustre_cfg *lcfg) = NULL;
1015 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
1017 client_process_config = cpc;
1019 EXPORT_SYMBOL(lustre_register_client_process_config);
1022 * Rename the proc parameter in \a cfg with a new name \a new_name.
1024 * \param cfg config structure which contains the proc parameter
1025 * \param new_name new name of the proc parameter
1027 * \retval valid-pointer pointer to the newly-allocated config structure
1028 * which contains the renamed proc parameter
1029 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
1030 * not contain a proc parameter
1031 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
1033 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
1034 const char *new_name)
1036 struct lustre_cfg_bufs *bufs = NULL;
1037 struct lustre_cfg *new_cfg = NULL;
1039 char *new_param = NULL;
1045 if (cfg == NULL || new_name == NULL)
1046 RETURN(ERR_PTR(-EINVAL));
1048 param = lustre_cfg_string(cfg, 1);
1050 RETURN(ERR_PTR(-EINVAL));
1052 value = strchr(param, '=');
1054 name_len = strlen(param);
1056 name_len = value - param;
1058 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
1060 OBD_ALLOC(new_param, new_len);
1061 if (new_param == NULL)
1062 RETURN(ERR_PTR(-ENOMEM));
1064 strcpy(new_param, new_name);
1066 strcat(new_param, value);
1068 OBD_ALLOC_PTR(bufs);
1070 OBD_FREE(new_param, new_len);
1071 RETURN(ERR_PTR(-ENOMEM));
1074 lustre_cfg_bufs_reset(bufs, NULL);
1075 lustre_cfg_bufs_init(bufs, cfg);
1076 lustre_cfg_bufs_set_string(bufs, 1, new_param);
1078 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
1079 OBD_FREE(new_param, new_len);
1081 if (new_cfg == NULL)
1082 RETURN(ERR_PTR(-ENOMEM));
1084 new_cfg->lcfg_num = cfg->lcfg_num;
1085 new_cfg->lcfg_flags = cfg->lcfg_flags;
1086 new_cfg->lcfg_nid = cfg->lcfg_nid;
1087 new_cfg->lcfg_nal = cfg->lcfg_nal;
1091 EXPORT_SYMBOL(lustre_cfg_rename);
1093 static int process_param2_config(struct lustre_cfg *lcfg)
1095 char *param = lustre_cfg_string(lcfg, 1);
1096 char *upcall = lustre_cfg_string(lcfg, 2);
1098 [0] = "/usr/sbin/lctl",
1103 struct timeval start;
1108 /* Add upcall processing here. Now only lctl is supported */
1109 if (strcmp(upcall, LCTL_UPCALL) != 0) {
1110 CERROR("Unsupported upcall %s\n", upcall);
1114 do_gettimeofday(&start);
1115 rc = call_usermodehelper(argv[0], argv, NULL, UMH_WAIT_PROC);
1116 do_gettimeofday(&end);
1119 CERROR("lctl: error invoking upcall %s %s %s: rc = %d; "
1120 "time %ldus\n", argv[0], argv[1], argv[2], rc,
1121 cfs_timeval_sub(&end, &start, NULL));
1123 CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
1124 argv[0], argv[1], argv[2],
1125 cfs_timeval_sub(&end, &start, NULL));
1132 void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
1134 quota_process_config = qpc;
1136 EXPORT_SYMBOL(lustre_register_quota_process_config);
1138 /** Process configuration commands given in lustre_cfg form.
1139 * These may come from direct calls (e.g. class_manual_cleanup)
1140 * or processing the config llog, or ioctl from lctl.
1142 int class_process_config(struct lustre_cfg *lcfg)
1144 struct obd_device *obd;
1147 LASSERT(lcfg && !IS_ERR(lcfg));
1148 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1150 /* Commands that don't need a device */
1151 switch(lcfg->lcfg_command) {
1153 err = class_attach(lcfg);
1156 case LCFG_ADD_UUID: {
1157 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1158 " (%s)\n", lustre_cfg_string(lcfg, 1),
1159 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1161 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1164 case LCFG_DEL_UUID: {
1165 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1166 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1167 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1169 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1172 case LCFG_MOUNTOPT: {
1173 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1174 lustre_cfg_string(lcfg, 1),
1175 lustre_cfg_string(lcfg, 2),
1176 lustre_cfg_string(lcfg, 3));
1177 /* set these mount options somewhere, so ll_fill_super
1179 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1180 lustre_cfg_string(lcfg, 1),
1181 LUSTRE_CFG_BUFLEN(lcfg, 2),
1182 lustre_cfg_string(lcfg, 2),
1183 LUSTRE_CFG_BUFLEN(lcfg, 3),
1184 lustre_cfg_string(lcfg, 3));
1187 case LCFG_DEL_MOUNTOPT: {
1188 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1189 lustre_cfg_string(lcfg, 1));
1190 class_del_profile(lustre_cfg_string(lcfg, 1));
1193 case LCFG_SET_TIMEOUT: {
1194 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1195 obd_timeout, lcfg->lcfg_num);
1196 obd_timeout = max(lcfg->lcfg_num, 1U);
1197 obd_timeout_set = 1;
1200 case LCFG_SET_LDLM_TIMEOUT: {
1201 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1202 ldlm_timeout, lcfg->lcfg_num);
1203 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1204 if (ldlm_timeout >= obd_timeout)
1205 ldlm_timeout = max(obd_timeout / 3, 1U);
1206 ldlm_timeout_set = 1;
1209 case LCFG_SET_UPCALL: {
1210 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1211 /* COMPAT_146 Don't fail on old configs */
1215 struct cfg_marker *marker;
1216 marker = lustre_cfg_buf(lcfg, 1);
1217 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1218 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1223 /* llite has no obd */
1224 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1225 PARAM_LLITE, NULL) == 0) &&
1226 client_process_config) {
1227 err = (*client_process_config)(lcfg);
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, lcfg->lcfg_num, lcfg);
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 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1242 PARAM_QUOTA, &tmp) == 0) &&
1243 quota_process_config) {
1244 err = (*quota_process_config)(lcfg);
1250 case LCFG_SET_PARAM: {
1251 err = process_param2_config(lcfg);
1255 /* Commands that require a device */
1256 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1258 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1259 CERROR("this lcfg command requires a device name\n");
1261 CERROR("no device for: %s\n",
1262 lustre_cfg_string(lcfg, 0));
1264 GOTO(out, err = -EINVAL);
1267 switch(lcfg->lcfg_command) {
1269 err = class_setup(obd, lcfg);
1273 err = class_detach(obd, lcfg);
1276 case LCFG_CLEANUP: {
1277 err = class_cleanup(obd, lcfg);
1280 case LCFG_ADD_CONN: {
1281 err = class_add_conn(obd, lcfg);
1284 case LCFG_DEL_CONN: {
1285 err = class_del_conn(obd, lcfg);
1288 case LCFG_POOL_NEW: {
1289 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1292 case LCFG_POOL_ADD: {
1293 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1294 lustre_cfg_string(lcfg, 3));
1297 case LCFG_POOL_REM: {
1298 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1299 lustre_cfg_string(lcfg, 3));
1302 case LCFG_POOL_DEL: {
1303 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1307 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1313 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1314 CWARN("Ignoring error %d on optional command %#x\n", err,
1315 lcfg->lcfg_command);
1320 EXPORT_SYMBOL(class_process_config);
1322 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1323 struct lustre_cfg *lcfg, void *data)
1325 struct lprocfs_vars *var;
1326 struct file fakefile;
1327 struct seq_file fake_seqfile;
1329 int i, keylen, vallen;
1330 int matched = 0, j = 0;
1335 if (lcfg->lcfg_command != LCFG_PARAM) {
1336 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1340 /* fake a seq file so that var->fops->write can work... */
1341 fakefile.private_data = &fake_seqfile;
1342 fake_seqfile.private = data;
1343 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1344 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1345 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1346 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1347 key = lustre_cfg_buf(lcfg, i);
1348 /* Strip off prefix */
1349 if (class_match_param(key, prefix, &key))
1350 /* If the prefix doesn't match, return error so we
1351 * can pass it down the stack */
1353 sval = strchr(key, '=');
1354 if (!sval || (*(sval + 1) == 0)) {
1355 CERROR("Can't parse param %s (missing '=')\n", key);
1356 /* rc = -EINVAL; continue parsing other params */
1359 keylen = sval - key;
1361 vallen = strlen(sval);
1364 /* Search proc entries */
1365 while (lvars[j].name) {
1367 if (class_match_param(key, var->name, NULL) == 0 &&
1368 keylen == strlen(var->name)) {
1372 if (var->fops && var->fops->write) {
1376 rc = (var->fops->write)(&fakefile, sval,
1385 /* It was upgraded from old MDT/OST device,
1386 * ignore the obsolete "sec_level" parameter. */
1387 if (strncmp("sec_level", key, keylen) == 0)
1390 CERROR("%.*s: %s unknown param %s\n",
1391 (int)strlen(prefix) - 1, prefix,
1392 (char *)lustre_cfg_string(lcfg, 0), key);
1393 /* rc = -EINVAL; continue parsing other params */
1395 } else if (rc < 0) {
1396 CERROR("%s: error writing proc entry '%s': rc = %d\n",
1397 prefix, var->name, rc);
1400 CDEBUG(D_CONFIG, "%s.%.*s: Set parameter %.*s=%s\n",
1401 lustre_cfg_string(lcfg, 0),
1402 (int)strlen(prefix) - 1, prefix,
1403 (int)(sval - key - 1), key, sval);
1413 EXPORT_SYMBOL(class_process_proc_param);
1416 * Supplemental functions for config logs, it allocates lustre_cfg
1417 * buffers plus initialized llog record header at the beginning.
1419 struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs)
1421 struct llog_cfg_rec *lcr;
1426 reclen = lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen);
1427 reclen = llog_data_len(reclen) + sizeof(struct llog_rec_hdr) +
1428 sizeof(struct llog_rec_tail);
1430 OBD_ALLOC(lcr, reclen);
1434 lustre_cfg_init(&lcr->lcr_cfg, cmd, bufs);
1436 lcr->lcr_hdr.lrh_len = reclen;
1437 lcr->lcr_hdr.lrh_type = OBD_CFG_REC;
1441 EXPORT_SYMBOL(lustre_cfg_rec_new);
1443 void lustre_cfg_rec_free(struct llog_cfg_rec *lcr)
1446 OBD_FREE(lcr, lcr->lcr_hdr.lrh_len);
1449 EXPORT_SYMBOL(lustre_cfg_rec_free);
1451 /** Parse a configuration llog, doing various manipulations on them
1452 * for various reasons, (modifications for compatibility, skip obsolete
1453 * records, change uuids, etc), then class_process_config() resulting
1456 int class_config_llog_handler(const struct lu_env *env,
1457 struct llog_handle *handle,
1458 struct llog_rec_hdr *rec, void *data)
1460 struct config_llog_instance *cfg = data;
1461 int cfg_len = rec->lrh_len;
1462 char *cfg_buf = (char *) (rec + 1);
1466 /* class_config_dump_handler(handle, rec, data); */
1468 switch (rec->lrh_type) {
1470 struct lustre_cfg *lcfg, *lcfg_new;
1471 struct lustre_cfg_bufs bufs;
1472 char *inst_name = NULL;
1474 int inst = 0, swab = 0;
1476 lcfg = (struct lustre_cfg *)cfg_buf;
1477 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1478 lustre_swab_lustre_cfg(lcfg);
1482 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1486 /* Figure out config state info */
1487 if (lcfg->lcfg_command == LCFG_MARKER) {
1488 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1489 lustre_swab_cfg_marker(marker, swab,
1490 LUSTRE_CFG_BUFLEN(lcfg, 1));
1491 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1492 cfg->cfg_flags, marker->cm_flags);
1493 if (marker->cm_flags & CM_START) {
1494 /* all previous flags off */
1495 cfg->cfg_flags = CFG_F_MARKER;
1496 server_name2index(marker->cm_tgtname,
1497 &cfg->cfg_lwp_idx, NULL);
1498 if (marker->cm_flags & CM_SKIP) {
1499 cfg->cfg_flags |= CFG_F_SKIP;
1500 CDEBUG(D_CONFIG, "SKIP #%d\n",
1502 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1504 lustre_check_exclusion(cfg->cfg_sb,
1505 marker->cm_tgtname))) {
1506 cfg->cfg_flags |= CFG_F_EXCLUDE;
1507 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1510 } else if (marker->cm_flags & CM_END) {
1514 /* A config command without a start marker before it is
1515 illegal (post 146) */
1516 if (!(cfg->cfg_flags & CFG_F_COMPAT146) &&
1517 !(cfg->cfg_flags & CFG_F_MARKER) &&
1518 (lcfg->lcfg_command != LCFG_MARKER)) {
1519 CWARN("Config not inside markers, ignoring! "
1520 "(inst: %p, uuid: %s, flags: %#x)\n",
1522 cfg->cfg_uuid.uuid, cfg->cfg_flags);
1523 cfg->cfg_flags |= CFG_F_SKIP;
1525 if (cfg->cfg_flags & CFG_F_SKIP) {
1526 CDEBUG(D_CONFIG, "skipping %#x\n",
1529 /* No processing! */
1534 * For interoperability between 1.8 and 2.0,
1535 * rename "mds" obd device type to "mdt".
1538 char *typename = lustre_cfg_string(lcfg, 1);
1539 char *index = lustre_cfg_string(lcfg, 2);
1541 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1542 strcmp(typename, "mds") == 0)) {
1543 CWARN("For 1.8 interoperability, rename obd "
1544 "type from mds to mdt\n");
1547 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1548 strcmp(index, "type") == 0)) {
1549 CDEBUG(D_INFO, "For 1.8 interoperability, "
1550 "set this index to '0'\n");
1556 #ifdef HAVE_SERVER_SUPPORT
1557 /* newer MDS replaces LOV/OSC with LOD/OSP */
1559 char *typename = lustre_cfg_string(lcfg, 1);
1561 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1562 strcmp(typename, LUSTRE_LOV_NAME) == 0) &&
1563 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1565 "For 2.x interoperability, rename obd "
1566 "type from lov to lod (%s)\n",
1567 s2lsi(cfg->cfg_sb)->lsi_svname);
1568 strcpy(typename, LUSTRE_LOD_NAME);
1570 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1571 strcmp(typename, LUSTRE_OSC_NAME) == 0) &&
1572 cfg->cfg_sb && IS_MDT(s2lsi(cfg->cfg_sb))) {
1574 "For 2.x interoperability, rename obd "
1575 "type from osc to osp (%s)\n",
1576 s2lsi(cfg->cfg_sb)->lsi_svname);
1577 strcpy(typename, LUSTRE_OSP_NAME);
1580 #endif /* HAVE_SERVER_SUPPORT */
1582 if (cfg->cfg_flags & CFG_F_EXCLUDE) {
1583 CDEBUG(D_CONFIG, "cmd: %x marked EXCLUDED\n",
1584 lcfg->lcfg_command);
1585 if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD)
1586 /* Add inactive instead */
1587 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1590 lustre_cfg_bufs_init(&bufs, lcfg);
1592 if (cfg->cfg_instance &&
1593 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0) {
1595 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1596 sizeof(cfg->cfg_instance) * 2 + 4;
1597 OBD_ALLOC(inst_name, inst_len);
1598 if (inst_name == NULL)
1599 GOTO(out, rc = -ENOMEM);
1600 snprintf(inst_name, inst_len, "%s-%p",
1601 lustre_cfg_string(lcfg, 0),
1603 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1604 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1605 lcfg->lcfg_command, inst_name);
1608 /* we override the llog's uuid for clients, to insure they
1610 if (cfg->cfg_instance != NULL &&
1611 lcfg->lcfg_command == LCFG_ATTACH) {
1612 lustre_cfg_bufs_set_string(&bufs, 2,
1613 cfg->cfg_uuid.uuid);
1616 * sptlrpc config record, we expect 2 data segments:
1617 * [0]: fs_name/target_name,
1619 * moving them to index [1] and [2], and insert MGC's
1620 * obdname at index [0].
1622 if (cfg->cfg_instance == NULL &&
1623 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1624 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1625 bufs.lcfg_buflen[1]);
1626 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1627 bufs.lcfg_buflen[0]);
1628 lustre_cfg_bufs_set_string(&bufs, 0,
1632 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1633 if (lcfg_new == NULL)
1634 GOTO(out, rc = -ENOMEM);
1636 lcfg_new->lcfg_num = lcfg->lcfg_num;
1637 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1639 /* XXX Hack to try to remain binary compatible with
1640 * pre-newconfig logs */
1641 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1642 (lcfg->lcfg_nid >> 32) == 0) {
1643 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1645 lcfg_new->lcfg_nid =
1646 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1647 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1648 lcfg->lcfg_nal, addr,
1649 libcfs_nid2str(lcfg_new->lcfg_nid));
1651 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1654 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1656 rc = class_process_config(lcfg_new);
1657 lustre_cfg_free(lcfg_new);
1660 OBD_FREE(inst_name, inst_len);
1664 CERROR("Unknown llog record type %#x encountered\n",
1670 CERROR("%s: cfg command failed: rc = %d\n",
1671 handle->lgh_ctxt->loc_obd->obd_name, rc);
1672 class_config_dump_handler(NULL, handle, rec, data);
1676 EXPORT_SYMBOL(class_config_llog_handler);
1678 int class_config_parse_llog(const struct lu_env *env, struct llog_ctxt *ctxt,
1679 char *name, struct config_llog_instance *cfg)
1681 struct llog_process_cat_data cd = {0, 0};
1682 struct llog_handle *llh;
1687 CDEBUG(D_INFO, "looking up llog %s\n", name);
1688 rc = llog_open(env, ctxt, &llh, NULL, name, LLOG_OPEN_EXISTS);
1692 rc = llog_init_handle(env, llh, LLOG_F_IS_PLAIN, NULL);
1694 GOTO(parse_out, rc);
1696 /* continue processing from where we last stopped to end-of-log */
1698 cd.lpcd_first_idx = cfg->cfg_last_idx;
1699 callback = cfg->cfg_callback;
1700 LASSERT(callback != NULL);
1702 callback = class_config_llog_handler;
1705 cd.lpcd_last_idx = 0;
1707 rc = llog_process(env, llh, callback, cfg, &cd);
1709 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1710 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1712 cfg->cfg_last_idx = cd.lpcd_last_idx;
1715 llog_close(env, llh);
1718 EXPORT_SYMBOL(class_config_parse_llog);
1720 static struct lcfg_type_data {
1724 } lcfg_data_table[] = {
1725 { LCFG_ATTACH, "attach", { "type", "UUID", "3", "4" } },
1726 { LCFG_DETACH, "detach", { "1", "2", "3", "4" } },
1727 { LCFG_SETUP, "setup", { "UUID", "node", "options", "failout" } },
1728 { LCFG_CLEANUP, "cleanup", { "1", "2", "3", "4" } },
1729 { LCFG_ADD_UUID, "add_uuid", { "node", "2", "3", "4" } },
1730 { LCFG_DEL_UUID, "del_uuid", { "1", "2", "3", "4" } },
1731 { LCFG_MOUNTOPT, "new_profile", { "name", "lov", "lmv", "4" } },
1732 { LCFG_DEL_MOUNTOPT, "del_mountopt", { "1", "2", "3", "4" } , },
1733 { LCFG_SET_TIMEOUT, "set_timeout", { "parameter", "2", "3", "4" } },
1734 { LCFG_SET_UPCALL, "set_upcall", { "1", "2", "3", "4" } },
1735 { LCFG_ADD_CONN, "add_conn", { "node", "2", "3", "4" } },
1736 { LCFG_DEL_CONN, "del_conn", { "1", "2", "3", "4" } },
1737 { LCFG_LOV_ADD_OBD, "add_osc", { "ost", "index", "gen", "UUID" } },
1738 { LCFG_LOV_DEL_OBD, "del_osc", { "1", "2", "3", "4" } },
1739 { LCFG_PARAM, "set_param", { "parameter", "value", "3", "4" } },
1740 { LCFG_MARKER, "marker", { "1", "2", "3", "4" } },
1741 { LCFG_LOG_START, "log_start", { "1", "2", "3", "4" } },
1742 { LCFG_LOG_END, "log_end", { "1", "2", "3", "4" } },
1743 { LCFG_LOV_ADD_INA, "add_osc_inactive", { "1", "2", "3", "4" } },
1744 { LCFG_ADD_MDC, "add_mdc", { "mdt", "index", "gen", "UUID" } },
1745 { LCFG_DEL_MDC, "del_mdc", { "1", "2", "3", "4" } },
1746 { LCFG_SPTLRPC_CONF, "security", { "parameter", "2", "3", "4" } },
1747 { LCFG_POOL_NEW, "new_pool", { "fsname", "pool", "3", "4" } },
1748 { LCFG_POOL_ADD, "add_pool", { "fsname", "pool", "ost", "4" } },
1749 { LCFG_POOL_REM, "remove_pool", { "fsname", "pool", "ost", "4" } },
1750 { LCFG_POOL_DEL, "del_pool", { "fsname", "pool", "3", "4" } },
1751 { LCFG_SET_LDLM_TIMEOUT, "set_ldlm_timeout",
1752 { "parameter", "2", "3", "4" } },
1753 { 0, NULL, { NULL, NULL, NULL, NULL } }
1756 static struct lcfg_type_data *lcfg_cmd2data(__u32 cmd)
1760 while (lcfg_data_table[i].ltd_type != 0) {
1761 if (lcfg_data_table[i].ltd_type == cmd)
1762 return &lcfg_data_table[i];
1769 * parse config record and output dump in supplied buffer.
1770 * This is separated from class_config_dump_handler() to use
1771 * for ioctl needs as well
1774 * - { event: attach, device: lustrewt-clilov, type: lov, UUID:
1775 * lustrewt-clilov_UUID }
1777 int class_config_yaml_output(struct llog_rec_hdr *rec, char *buf, int size)
1779 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1781 char *end = buf + size;
1783 struct lcfg_type_data *ldata;
1785 LASSERT(rec->lrh_type == OBD_CFG_REC);
1786 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1790 ldata = lcfg_cmd2data(lcfg->lcfg_command);
1794 if (lcfg->lcfg_command == LCFG_MARKER)
1797 /* form YAML entity */
1798 ptr += snprintf(ptr, end - ptr, "- { event: %s", ldata->ltd_name);
1800 if (lcfg->lcfg_flags)
1801 ptr += snprintf(ptr, end - ptr, ", flags: %#08x",
1804 ptr += snprintf(ptr, end - ptr, ", num: %#08x",
1806 if (lcfg->lcfg_nid) {
1807 char nidstr[LNET_NIDSTR_SIZE];
1809 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1810 ptr += snprintf(ptr, end - ptr, ", nid: %s("LPX64")",
1811 nidstr, lcfg->lcfg_nid);
1814 if (LUSTRE_CFG_BUFLEN(lcfg, 0) > 0)
1815 ptr += snprintf(ptr, end - ptr, ", device: %s",
1816 lustre_cfg_string(lcfg, 0));
1818 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1819 if (LUSTRE_CFG_BUFLEN(lcfg, i) > 0)
1820 ptr += snprintf(ptr, end - ptr, ", %s: %s",
1821 ldata->ltd_bufs[i - 1],
1822 lustre_cfg_string(lcfg, i));
1825 ptr += snprintf(ptr, end - ptr, " }\n");
1826 /* return consumed bytes */
1832 * parse config record and output dump in supplied buffer.
1833 * This is separated from class_config_dump_handler() to use
1834 * for ioctl needs as well
1836 static int class_config_parse_rec(struct llog_rec_hdr *rec, char *buf, int size)
1838 struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
1840 char *end = buf + size;
1845 LASSERT(rec->lrh_type == OBD_CFG_REC);
1846 rc = lustre_cfg_sanity_check(lcfg, rec->lrh_len);
1850 ptr += snprintf(ptr, end-ptr, "cmd=%05x ", lcfg->lcfg_command);
1851 if (lcfg->lcfg_flags)
1852 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1856 ptr += snprintf(ptr, end-ptr, "num=%#08x ", lcfg->lcfg_num);
1858 if (lcfg->lcfg_nid) {
1859 char nidstr[LNET_NIDSTR_SIZE];
1861 libcfs_nid2str_r(lcfg->lcfg_nid, nidstr, sizeof(nidstr));
1862 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1863 nidstr, lcfg->lcfg_nid);
1866 if (lcfg->lcfg_command == LCFG_MARKER) {
1867 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1869 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1870 marker->cm_step, marker->cm_flags,
1871 marker->cm_tgtname, marker->cm_comment);
1875 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1876 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1877 lustre_cfg_string(lcfg, i));
1880 ptr += snprintf(ptr, end - ptr, "\n");
1881 /* return consumed bytes */
1886 int class_config_dump_handler(const struct lu_env *env,
1887 struct llog_handle *handle,
1888 struct llog_rec_hdr *rec, void *data)
1895 OBD_ALLOC(outstr, 256);
1899 if (rec->lrh_type == OBD_CFG_REC) {
1900 class_config_parse_rec(rec, outstr, 256);
1901 LCONSOLE(D_WARNING, " %s\n", outstr);
1903 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1907 OBD_FREE(outstr, 256);
1911 /** Call class_cleanup and class_detach.
1912 * "Manual" only in the sense that we're faking lcfg commands.
1914 int class_manual_cleanup(struct obd_device *obd)
1917 struct lustre_cfg *lcfg;
1918 struct lustre_cfg_bufs bufs;
1923 CERROR("empty cleanup\n");
1932 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1933 obd->obd_name, flags);
1935 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1936 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1937 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1941 rc = class_process_config(lcfg);
1943 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1947 /* the lcfg is almost the same for both ops */
1948 lcfg->lcfg_command = LCFG_DETACH;
1949 rc = class_process_config(lcfg);
1951 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1953 lustre_cfg_free(lcfg);
1956 EXPORT_SYMBOL(class_manual_cleanup);
1959 * uuid<->export lustre hash operations
1963 uuid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
1965 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1966 sizeof(((struct obd_uuid *)key)->uuid), mask);
1970 uuid_key(struct hlist_node *hnode)
1972 struct obd_export *exp;
1974 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1976 return &exp->exp_client_uuid;
1980 * NOTE: It is impossible to find an export that is in failed
1981 * state with this function
1984 uuid_keycmp(const void *key, struct hlist_node *hnode)
1986 struct obd_export *exp;
1989 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1991 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1996 uuid_export_object(struct hlist_node *hnode)
1998 return hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2002 uuid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2004 struct obd_export *exp;
2006 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2007 class_export_get(exp);
2011 uuid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2013 struct obd_export *exp;
2015 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
2016 class_export_put(exp);
2019 static struct cfs_hash_ops uuid_hash_ops = {
2020 .hs_hash = uuid_hash,
2022 .hs_keycmp = uuid_keycmp,
2023 .hs_object = uuid_export_object,
2024 .hs_get = uuid_export_get,
2025 .hs_put_locked = uuid_export_put_locked,
2030 * nid<->export hash operations
2034 nid_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2036 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
2040 nid_key(struct hlist_node *hnode)
2042 struct obd_export *exp;
2044 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2046 RETURN(&exp->exp_connection->c_peer.nid);
2050 * NOTE: It is impossible to find an export that is in failed
2051 * state with this function
2054 nid_kepcmp(const void *key, struct hlist_node *hnode)
2056 struct obd_export *exp;
2059 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2061 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
2066 nid_export_object(struct hlist_node *hnode)
2068 return hlist_entry(hnode, struct obd_export, exp_nid_hash);
2072 nid_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2074 struct obd_export *exp;
2076 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2077 class_export_get(exp);
2081 nid_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2083 struct obd_export *exp;
2085 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
2086 class_export_put(exp);
2089 static struct cfs_hash_ops nid_hash_ops = {
2090 .hs_hash = nid_hash,
2092 .hs_keycmp = nid_kepcmp,
2093 .hs_object = nid_export_object,
2094 .hs_get = nid_export_get,
2095 .hs_put_locked = nid_export_put_locked,
2100 * nid<->nidstats hash operations
2104 nidstats_key(struct hlist_node *hnode)
2106 struct nid_stat *ns;
2108 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2114 nidstats_keycmp(const void *key, struct hlist_node *hnode)
2116 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
2120 nidstats_object(struct hlist_node *hnode)
2122 return hlist_entry(hnode, struct nid_stat, nid_hash);
2126 nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
2128 struct nid_stat *ns;
2130 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2135 nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2137 struct nid_stat *ns;
2139 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
2143 static struct cfs_hash_ops nid_stat_hash_ops = {
2144 .hs_hash = nid_hash,
2145 .hs_key = nidstats_key,
2146 .hs_keycmp = nidstats_keycmp,
2147 .hs_object = nidstats_object,
2148 .hs_get = nidstats_get,
2149 .hs_put_locked = nidstats_put_locked,
2154 * client_generation<->export hash operations
2158 gen_hash(struct cfs_hash *hs, const void *key, unsigned mask)
2160 return cfs_hash_djb2_hash(key, sizeof(__u32), mask);
2164 gen_key(struct hlist_node *hnode)
2166 struct obd_export *exp;
2168 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2170 RETURN(&exp->exp_target_data.ted_lcd->lcd_generation);
2174 * NOTE: It is impossible to find an export that is in failed
2175 * state with this function
2178 gen_kepcmp(const void *key, struct hlist_node *hnode)
2180 struct obd_export *exp;
2183 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2185 RETURN(exp->exp_target_data.ted_lcd->lcd_generation == *(__u32 *)key &&
2190 gen_export_object(struct hlist_node *hnode)
2192 return hlist_entry(hnode, struct obd_export, exp_gen_hash);
2196 gen_export_get(struct cfs_hash *hs, struct hlist_node *hnode)
2198 struct obd_export *exp;
2200 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2201 class_export_get(exp);
2205 gen_export_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
2207 struct obd_export *exp;
2209 exp = hlist_entry(hnode, struct obd_export, exp_gen_hash);
2210 class_export_put(exp);
2213 static struct cfs_hash_ops gen_hash_ops = {
2214 .hs_hash = gen_hash,
2216 .hs_keycmp = gen_kepcmp,
2217 .hs_object = gen_export_object,
2218 .hs_get = gen_export_get,
2219 .hs_put_locked = gen_export_put_locked,