1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
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 <obd_class.h>
44 #include <linux/string.h>
46 #include <liblustre.h>
47 #include <obd_class.h>
50 #include <lustre_log.h>
51 #include <lprocfs_status.h>
52 #include <libcfs/list.h>
53 #include <lustre_param.h>
55 static cfs_hash_ops_t uuid_hash_ops;
56 static cfs_hash_ops_t nid_hash_ops;
57 static cfs_hash_ops_t nid_stat_hash_ops;
59 /*********** string parsing utils *********/
61 /* returns 0 if we find this key in the buffer, else 1 */
62 int class_find_param(char *buf, char *key, char **valp)
69 if ((ptr = strstr(buf, key)) == NULL)
73 *valp = ptr + strlen(key);
79 * Finds a parameter in \a params and copies it to \a copy.
81 * Leading spaces are skipped. Next space or end of string is the
82 * parameter terminator with the exception that spaces inside single or double
83 * quotes get included into a parameter. The parameter is copied into \a copy
84 * which has to be allocated big enough by a caller, quotes are stripped in
85 * the copy and the copy is terminated by 0.
87 * On return \a params is set to next parameter or to NULL if last
88 * parameter is returned.
90 * \retval 0 if parameter is returned in \a copy
92 * \retval -EINVAL if unbalanced quota is found
94 int class_get_next_param(char **params, char *copy)
109 q1 = strpbrk(str, " '\"");
112 memcpy(copy, str, len);
119 memcpy(copy, str, len);
125 memcpy(copy, str, len);
128 /* search for the matching closing quote */
130 q2 = strchr(str, *q1);
132 CERROR("Unbalanced quota in parameters: \"%s\"\n",
137 memcpy(copy, str, len);
144 /* returns 0 if this is the first key in the buffer, else 1.
145 valp points to first char after key. */
146 int class_match_param(char *buf, char *key, char **valp)
151 if (memcmp(buf, key, strlen(key)) != 0)
155 *valp = buf + strlen(key);
160 static int parse_nid(char *buf, void *value)
162 lnet_nid_t *nid = (lnet_nid_t *)value;
164 *nid = libcfs_str2nid(buf);
165 if (*nid != LNET_NID_ANY)
168 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
172 static int parse_net(char *buf, void *value)
174 __u32 *net = (__u32 *)value;
176 *net = libcfs_str2net(buf);
177 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
189 endh is set to next separator */
190 static int class_parse_value(char *buf, int opc, void *value, char **endh)
198 while (*buf == ',' || *buf == ':')
200 if (*buf == ' ' || *buf == '/' || *buf == '\0')
203 /* nid separators or end of nids */
204 endp = strpbrk(buf, ",: /");
206 endp = buf + strlen(buf);
213 case CLASS_PARSE_NID:
214 rc = parse_nid(buf, value);
216 case CLASS_PARSE_NET:
217 rc = parse_net(buf, value);
228 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
230 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh);
233 int class_parse_net(char *buf, __u32 *net, char **endh)
235 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh);
238 int class_match_net(char *buf, lnet_nid_t nid)
242 while (class_find_param(buf, PARAM_NETWORK, &buf) == 0) {
243 /* please restrict to the nids pertaining to
244 * the specified networks */
245 while (class_parse_net(buf, &net, &buf) == 0) {
246 if (LNET_NIDNET(nid) == net)
253 EXPORT_SYMBOL(class_find_param);
254 EXPORT_SYMBOL(class_get_next_param);
255 EXPORT_SYMBOL(class_match_param);
256 EXPORT_SYMBOL(class_parse_nid);
257 EXPORT_SYMBOL(class_parse_net);
258 EXPORT_SYMBOL(class_match_net);
260 /********************** class fns **********************/
263 * Create a new obd device and set the type, name and uuid. If successful,
264 * the new device can be accessed by either name or uuid.
266 int class_attach(struct lustre_cfg *lcfg)
268 struct obd_device *obd = NULL;
269 char *typename, *name, *uuid;
273 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
274 CERROR("No type passed!\n");
277 typename = lustre_cfg_string(lcfg, 1);
279 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
280 CERROR("No name passed!\n");
283 name = lustre_cfg_string(lcfg, 0);
285 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
286 CERROR("No UUID passed!\n");
289 uuid = lustre_cfg_string(lcfg, 2);
291 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
292 MKSTR(typename), MKSTR(name), MKSTR(uuid));
294 obd = class_newdev(typename, name);
296 /* Already exists or out of obds */
299 CERROR("Cannot create device %s of type %s : %d\n",
303 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
305 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
306 "obd %p obd_magic %08X != %08X\n",
307 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
308 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
309 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
311 cfs_rwlock_init(&obd->obd_pool_lock);
312 obd->obd_pool_limit = 0;
313 obd->obd_pool_slv = 0;
315 CFS_INIT_LIST_HEAD(&obd->obd_exports);
316 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
317 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
318 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
319 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
320 cfs_spin_lock_init(&obd->obd_nid_lock);
321 cfs_spin_lock_init(&obd->obd_dev_lock);
322 cfs_sema_init(&obd->obd_dev_sem, 1);
323 cfs_spin_lock_init(&obd->obd_osfs_lock);
324 /* obd->obd_osfs_age must be set to a value in the distant
325 * past to guarantee a fresh statfs is fetched on mount. */
326 obd->obd_osfs_age = cfs_time_shift_64(-1000);
328 /* XXX belongs in setup not attach */
329 cfs_init_rwsem(&obd->obd_observer_link_sem);
331 cfs_init_timer(&obd->obd_recovery_timer);
332 cfs_spin_lock_init(&obd->obd_recovery_task_lock);
333 cfs_waitq_init(&obd->obd_next_transno_waitq);
334 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
335 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
336 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
337 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
338 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
340 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
343 if (len >= sizeof(obd->obd_uuid)) {
344 CERROR("uuid must be < %d bytes long\n",
345 (int)sizeof(obd->obd_uuid));
346 GOTO(out, rc = -EINVAL);
348 memcpy(obd->obd_uuid.uuid, uuid, len);
351 if (OBP(obd, attach)) {
352 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
354 GOTO(out, rc = -EINVAL);
357 /* Detach drops this */
358 cfs_spin_lock(&obd->obd_dev_lock);
359 cfs_atomic_set(&obd->obd_refcount, 1);
360 cfs_spin_unlock(&obd->obd_dev_lock);
361 lu_ref_init(&obd->obd_reference);
362 lu_ref_add(&obd->obd_reference, "attach", obd);
364 obd->obd_attached = 1;
365 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
366 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
370 class_release_dev(obd);
375 /** Create hashes, self-export, and call type-specific setup.
376 * Setup is effectively the "start this obd" call.
378 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
381 struct obd_export *exp;
384 LASSERT(obd != NULL);
385 LASSERTF(obd == class_num2obd(obd->obd_minor),
386 "obd %p != obd_devs[%d] %p\n",
387 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
388 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
389 "obd %p obd_magic %08x != %08x\n",
390 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
392 /* have we attached a type to this device? */
393 if (!obd->obd_attached) {
394 CERROR("Device %d not attached\n", obd->obd_minor);
398 if (obd->obd_set_up) {
399 CERROR("Device %d already setup (type %s)\n",
400 obd->obd_minor, obd->obd_type->typ_name);
404 /* is someone else setting us up right now? (attach inits spinlock) */
405 cfs_spin_lock(&obd->obd_dev_lock);
406 if (obd->obd_starting) {
407 cfs_spin_unlock(&obd->obd_dev_lock);
408 CERROR("Device %d setup in progress (type %s)\n",
409 obd->obd_minor, obd->obd_type->typ_name);
412 /* just leave this on forever. I can't use obd_set_up here because
413 other fns check that status, and we're not actually set up yet. */
414 obd->obd_starting = 1;
415 obd->obd_uuid_hash = NULL;
416 obd->obd_nid_hash = NULL;
417 obd->obd_nid_stats_hash = NULL;
418 cfs_spin_unlock(&obd->obd_dev_lock);
420 /* create an uuid-export lustre hash */
421 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
424 HASH_UUID_BKT_BITS, 0,
427 &uuid_hash_ops, CFS_HASH_DEFAULT);
428 if (!obd->obd_uuid_hash)
429 GOTO(err_hash, err = -ENOMEM);
431 /* create a nid-export lustre hash */
432 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
435 HASH_NID_BKT_BITS, 0,
438 &nid_hash_ops, CFS_HASH_DEFAULT);
439 if (!obd->obd_nid_hash)
440 GOTO(err_hash, err = -ENOMEM);
442 /* create a nid-stats lustre hash */
443 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
444 HASH_NID_STATS_CUR_BITS,
445 HASH_NID_STATS_MAX_BITS,
446 HASH_NID_STATS_BKT_BITS, 0,
449 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
450 if (!obd->obd_nid_stats_hash)
451 GOTO(err_hash, err = -ENOMEM);
453 exp = class_new_export(obd, &obd->obd_uuid);
455 GOTO(err_hash, err = PTR_ERR(exp));
457 obd->obd_self_export = exp;
458 cfs_list_del_init(&exp->exp_obd_chain_timed);
459 class_export_put(exp);
461 err = obd_setup(obd, lcfg);
467 cfs_spin_lock(&obd->obd_dev_lock);
468 /* cleanup drops this */
469 class_incref(obd, "setup", obd);
470 cfs_spin_unlock(&obd->obd_dev_lock);
472 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
473 obd->obd_name, obd->obd_uuid.uuid);
477 if (obd->obd_self_export) {
478 class_unlink_export(obd->obd_self_export);
479 obd->obd_self_export = NULL;
482 if (obd->obd_uuid_hash) {
483 cfs_hash_putref(obd->obd_uuid_hash);
484 obd->obd_uuid_hash = NULL;
486 if (obd->obd_nid_hash) {
487 cfs_hash_putref(obd->obd_nid_hash);
488 obd->obd_nid_hash = NULL;
490 if (obd->obd_nid_stats_hash) {
491 cfs_hash_putref(obd->obd_nid_stats_hash);
492 obd->obd_nid_stats_hash = NULL;
494 obd->obd_starting = 0;
495 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
499 /** We have finished using this obd and are ready to destroy it.
500 * There can be no more references to this obd.
502 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
506 if (obd->obd_set_up) {
507 CERROR("OBD device %d still set up\n", obd->obd_minor);
511 cfs_spin_lock(&obd->obd_dev_lock);
512 if (!obd->obd_attached) {
513 cfs_spin_unlock(&obd->obd_dev_lock);
514 CERROR("OBD device %d not attached\n", obd->obd_minor);
517 obd->obd_attached = 0;
518 cfs_spin_unlock(&obd->obd_dev_lock);
520 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
521 obd->obd_name, obd->obd_uuid.uuid);
523 class_decref(obd, "attach", obd);
525 /* not strictly necessary, but cleans up eagerly */
526 obd_zombie_impexp_cull();
531 /** Start shutting down the obd. There may be in-progess ops when
532 * this is called. We tell them to start shutting down with a call
533 * to class_disconnect_exports().
535 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
541 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
543 if (!obd->obd_set_up) {
544 CERROR("Device %d not setup\n", obd->obd_minor);
548 cfs_spin_lock(&obd->obd_dev_lock);
549 if (obd->obd_stopping) {
550 cfs_spin_unlock(&obd->obd_dev_lock);
551 CERROR("OBD %d already stopping\n", obd->obd_minor);
554 /* Leave this on forever */
555 obd->obd_stopping = 1;
556 cfs_spin_unlock(&obd->obd_dev_lock);
558 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
559 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
565 LCONSOLE_WARN("Failing over %s\n",
568 obd->obd_no_transno = 1;
569 obd->obd_no_recov = 1;
570 if (OBP(obd, iocontrol)) {
571 obd_iocontrol(OBD_IOC_SYNC,
572 obd->obd_self_export,
577 CERROR("Unrecognised flag '%c'\n", *flag);
581 LASSERT(obd->obd_self_export);
583 /* The three references that should be remaining are the
584 * obd_self_export and the attach and setup references. */
585 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
586 /* refcounf - 3 might be the number of real exports
587 (excluding self export). But class_incref is called
588 by other things as well, so don't count on it. */
589 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
590 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
591 dump_exports(obd, 0);
592 class_disconnect_exports(obd);
595 /* destroy an uuid-export hash body */
596 if (obd->obd_uuid_hash) {
597 cfs_hash_putref(obd->obd_uuid_hash);
598 obd->obd_uuid_hash = NULL;
601 /* destroy a nid-export hash body */
602 if (obd->obd_nid_hash) {
603 cfs_hash_putref(obd->obd_nid_hash);
604 obd->obd_nid_hash = NULL;
607 /* destroy a nid-stats hash body */
608 if (obd->obd_nid_stats_hash) {
609 cfs_hash_putref(obd->obd_nid_stats_hash);
610 obd->obd_nid_stats_hash = NULL;
613 /* Precleanup, we must make sure all exports get destroyed. */
614 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
616 CERROR("Precleanup %s returned %d\n",
618 class_decref(obd, "setup", obd);
623 struct obd_device *class_incref(struct obd_device *obd,
624 const char *scope, const void *source)
626 lu_ref_add_atomic(&obd->obd_reference, scope, source);
627 cfs_atomic_inc(&obd->obd_refcount);
628 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
629 cfs_atomic_read(&obd->obd_refcount));
634 void class_decref(struct obd_device *obd, const char *scope, const void *source)
639 cfs_spin_lock(&obd->obd_dev_lock);
640 cfs_atomic_dec(&obd->obd_refcount);
641 refs = cfs_atomic_read(&obd->obd_refcount);
642 cfs_spin_unlock(&obd->obd_dev_lock);
643 lu_ref_del(&obd->obd_reference, scope, source);
645 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
647 if ((refs == 1) && obd->obd_stopping) {
648 /* All exports have been destroyed; there should
649 be no more in-progress ops by this point.*/
651 cfs_spin_lock(&obd->obd_self_export->exp_lock);
652 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
653 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
655 /* note that we'll recurse into class_decref again */
656 class_unlink_export(obd->obd_self_export);
661 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
662 obd->obd_name, obd->obd_uuid.uuid);
663 LASSERT(!obd->obd_attached);
664 if (obd->obd_stopping) {
665 /* If we're not stopping, we were never set up */
666 err = obd_cleanup(obd);
668 CERROR("Cleanup %s returned %d\n",
671 if (OBP(obd, detach)) {
672 err = OBP(obd, detach)(obd);
674 CERROR("Detach returned %d\n", err);
676 class_release_dev(obd);
680 /** Add a failover nid location.
681 * Client obd types contact server obd types using this nid list.
683 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
685 struct obd_import *imp;
686 struct obd_uuid uuid;
690 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
691 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
692 CERROR("invalid conn_uuid\n");
695 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
696 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
697 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
698 CERROR("can't add connection on non-client dev\n");
702 imp = obd->u.cli.cl_import;
704 CERROR("try to add conn on immature client dev\n");
708 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
709 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
714 /** Remove a failover nid location.
716 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
718 struct obd_import *imp;
719 struct obd_uuid uuid;
723 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
724 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
725 CERROR("invalid conn_uuid\n");
728 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
729 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
730 CERROR("can't del connection on non-client dev\n");
734 imp = obd->u.cli.cl_import;
736 CERROR("try to del conn on immature client dev\n");
740 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
741 rc = obd_del_conn(imp, &uuid);
746 CFS_LIST_HEAD(lustre_profile_list);
748 struct lustre_profile *class_get_profile(const char * prof)
750 struct lustre_profile *lprof;
753 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
754 if (!strcmp(lprof->lp_profile, prof)) {
761 /** Create a named "profile".
762 * This defines the mdc and osc names to use for a client.
763 * This also is used to define the lov to be used by a mdt.
765 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
766 int mdclen, char *mdc)
768 struct lustre_profile *lprof;
772 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
774 OBD_ALLOC(lprof, sizeof(*lprof));
777 CFS_INIT_LIST_HEAD(&lprof->lp_list);
779 LASSERT(proflen == (strlen(prof) + 1));
780 OBD_ALLOC(lprof->lp_profile, proflen);
781 if (lprof->lp_profile == NULL)
782 GOTO(out, err = -ENOMEM);
783 memcpy(lprof->lp_profile, prof, proflen);
785 LASSERT(osclen == (strlen(osc) + 1));
786 OBD_ALLOC(lprof->lp_dt, osclen);
787 if (lprof->lp_dt == NULL)
788 GOTO(out, err = -ENOMEM);
789 memcpy(lprof->lp_dt, osc, osclen);
792 LASSERT(mdclen == (strlen(mdc) + 1));
793 OBD_ALLOC(lprof->lp_md, mdclen);
794 if (lprof->lp_md == NULL)
795 GOTO(out, err = -ENOMEM);
796 memcpy(lprof->lp_md, mdc, mdclen);
799 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
804 OBD_FREE(lprof->lp_md, mdclen);
806 OBD_FREE(lprof->lp_dt, osclen);
807 if (lprof->lp_profile)
808 OBD_FREE(lprof->lp_profile, proflen);
809 OBD_FREE(lprof, sizeof(*lprof));
813 void class_del_profile(const char *prof)
815 struct lustre_profile *lprof;
818 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
820 lprof = class_get_profile(prof);
822 cfs_list_del(&lprof->lp_list);
823 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
824 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
826 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
827 OBD_FREE(lprof, sizeof *lprof);
833 void class_del_profiles(void)
835 struct lustre_profile *lprof, *n;
838 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
839 cfs_list_del(&lprof->lp_list);
840 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
841 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
843 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
844 OBD_FREE(lprof, sizeof *lprof);
849 static int class_set_global(char *ptr, int val) {
852 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
854 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
856 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
858 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
859 at_early_margin = val;
860 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
865 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
871 /* We can't call ll_process_config directly because it lives in a module that
872 must be loaded after this one. */
873 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
875 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
877 client_process_config = cpc;
879 EXPORT_SYMBOL(lustre_register_client_process_config);
881 /** Process configuration commands given in lustre_cfg form.
882 * These may come from direct calls (e.g. class_manual_cleanup)
883 * or processing the config llog, or ioctl from lctl.
885 int class_process_config(struct lustre_cfg *lcfg)
887 struct obd_device *obd;
890 LASSERT(lcfg && !IS_ERR(lcfg));
891 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
893 /* Commands that don't need a device */
894 switch(lcfg->lcfg_command) {
896 err = class_attach(lcfg);
899 case LCFG_ADD_UUID: {
900 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
901 " (%s)\n", lustre_cfg_string(lcfg, 1),
902 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
904 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
907 case LCFG_DEL_UUID: {
908 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
909 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
910 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
912 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
915 case LCFG_MOUNTOPT: {
916 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
917 lustre_cfg_string(lcfg, 1),
918 lustre_cfg_string(lcfg, 2),
919 lustre_cfg_string(lcfg, 3));
920 /* set these mount options somewhere, so ll_fill_super
922 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
923 lustre_cfg_string(lcfg, 1),
924 LUSTRE_CFG_BUFLEN(lcfg, 2),
925 lustre_cfg_string(lcfg, 2),
926 LUSTRE_CFG_BUFLEN(lcfg, 3),
927 lustre_cfg_string(lcfg, 3));
930 case LCFG_DEL_MOUNTOPT: {
931 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
932 lustre_cfg_string(lcfg, 1));
933 class_del_profile(lustre_cfg_string(lcfg, 1));
936 case LCFG_SET_TIMEOUT: {
937 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
938 obd_timeout, lcfg->lcfg_num);
939 obd_timeout = max(lcfg->lcfg_num, 1U);
942 case LCFG_SET_LDLM_TIMEOUT: {
943 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
944 ldlm_timeout, lcfg->lcfg_num);
945 ldlm_timeout = max(lcfg->lcfg_num, 1U);
946 if (ldlm_timeout >= obd_timeout)
947 ldlm_timeout = max(obd_timeout / 3, 1U);
951 case LCFG_SET_UPCALL: {
952 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
953 /* COMPAT_146 Don't fail on old configs */
957 struct cfg_marker *marker;
958 marker = lustre_cfg_buf(lcfg, 1);
959 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
960 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
965 /* llite has no obd */
966 if ((class_match_param(lustre_cfg_string(lcfg, 1),
967 PARAM_LLITE, 0) == 0) &&
968 client_process_config) {
969 err = (*client_process_config)(lcfg);
971 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
972 PARAM_SYS, &tmp) == 0)) {
973 /* Global param settings */
974 err = class_set_global(tmp, lcfg->lcfg_num);
975 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
976 unknown globals would cause config to fail */
978 CWARN("Ignoring unknown param %s\n", tmp);
987 /* Commands that require a device */
988 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
990 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
991 CERROR("this lcfg command requires a device name\n");
993 CERROR("no device for: %s\n",
994 lustre_cfg_string(lcfg, 0));
996 GOTO(out, err = -EINVAL);
999 switch(lcfg->lcfg_command) {
1001 err = class_setup(obd, lcfg);
1005 err = class_detach(obd, lcfg);
1008 case LCFG_CLEANUP: {
1009 err = class_cleanup(obd, lcfg);
1012 case LCFG_ADD_CONN: {
1013 err = class_add_conn(obd, lcfg);
1016 case LCFG_DEL_CONN: {
1017 err = class_del_conn(obd, lcfg);
1020 case LCFG_POOL_NEW: {
1021 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1025 case LCFG_POOL_ADD: {
1026 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1027 lustre_cfg_string(lcfg, 3));
1031 case LCFG_POOL_REM: {
1032 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1033 lustre_cfg_string(lcfg, 3));
1037 case LCFG_POOL_DEL: {
1038 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1043 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1049 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1050 CWARN("Ignoring error %d on optional command %#x\n", err,
1051 lcfg->lcfg_command);
1057 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1058 struct lustre_cfg *lcfg, void *data)
1061 struct lprocfs_vars *var;
1063 int i, keylen, vallen;
1064 int matched = 0, j = 0;
1069 if (lcfg->lcfg_command != LCFG_PARAM) {
1070 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1074 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1075 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1076 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1077 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1078 key = lustre_cfg_buf(lcfg, i);
1079 /* Strip off prefix */
1080 class_match_param(key, prefix, &key);
1081 sval = strchr(key, '=');
1082 if (!sval || (*(sval + 1) == 0)) {
1083 CERROR("Can't parse param %s (missing '=')\n", key);
1084 /* rc = -EINVAL; continue parsing other params */
1087 keylen = sval - key;
1089 vallen = strlen(sval);
1092 /* Search proc entries */
1093 while (lvars[j].name) {
1095 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1096 keylen == strlen(var->name)) {
1099 if (var->write_fptr) {
1103 rc = (var->write_fptr)(NULL, sval,
1112 /* If the prefix doesn't match, return error so we
1113 can pass it down the stack */
1114 if (strnchr(key, keylen, '.'))
1116 CERROR("%s: unknown param %s\n",
1117 (char *)lustre_cfg_string(lcfg, 0), key);
1118 /* rc = -EINVAL; continue parsing other params */
1120 } else if (rc < 0) {
1121 CERROR("writing proc entry %s err %d\n",
1125 LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
1126 lustre_cfg_string(lcfg, 0),
1127 (int)strlen(prefix) - 1, prefix,
1128 (int)(sval - key - 1), key, sval);
1138 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1139 /* Don't throw config error */
1144 int class_config_dump_handler(struct llog_handle * handle,
1145 struct llog_rec_hdr *rec, void *data);
1148 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1150 #define lustre_check_exclusion(a,b) 0
1153 /** Parse a configuration llog, doing various manipulations on them
1154 * for various reasons, (modifications for compatibility, skip obsolete
1155 * records, change uuids, etc), then class_process_config() resulting
1158 static int class_config_llog_handler(struct llog_handle * handle,
1159 struct llog_rec_hdr *rec, void *data)
1161 struct config_llog_instance *clli = data;
1162 int cfg_len = rec->lrh_len;
1163 char *cfg_buf = (char*) (rec + 1);
1167 //class_config_dump_handler(handle, rec, data);
1169 switch (rec->lrh_type) {
1171 struct lustre_cfg *lcfg, *lcfg_new;
1172 struct lustre_cfg_bufs bufs;
1173 char *inst_name = NULL;
1175 int inst = 0, swab = 0;
1177 lcfg = (struct lustre_cfg *)cfg_buf;
1178 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1179 lustre_swab_lustre_cfg(lcfg);
1183 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1187 /* Figure out config state info */
1188 if (lcfg->lcfg_command == LCFG_MARKER) {
1189 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1190 lustre_swab_cfg_marker(marker, swab,
1191 LUSTRE_CFG_BUFLEN(lcfg, 1));
1192 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1193 clli->cfg_flags, marker->cm_flags);
1194 if (marker->cm_flags & CM_START) {
1195 /* all previous flags off */
1196 clli->cfg_flags = CFG_F_MARKER;
1197 if (marker->cm_flags & CM_SKIP) {
1198 clli->cfg_flags |= CFG_F_SKIP;
1199 CDEBUG(D_CONFIG, "SKIP #%d\n",
1201 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1203 lustre_check_exclusion(clli->cfg_sb,
1204 marker->cm_tgtname))) {
1205 clli->cfg_flags |= CFG_F_EXCLUDE;
1206 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1209 } else if (marker->cm_flags & CM_END) {
1210 clli->cfg_flags = 0;
1213 /* A config command without a start marker before it is
1214 illegal (post 146) */
1215 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1216 !(clli->cfg_flags & CFG_F_MARKER) &&
1217 (lcfg->lcfg_command != LCFG_MARKER)) {
1218 CWARN("Config not inside markers, ignoring! "
1219 "(inst: %s, uuid: %s, flags: %#x)\n",
1220 clli->cfg_instance ? clli->cfg_instance : "<null>",
1221 clli->cfg_uuid.uuid, clli->cfg_flags);
1222 clli->cfg_flags |= CFG_F_SKIP;
1224 if (clli->cfg_flags & CFG_F_SKIP) {
1225 CDEBUG(D_CONFIG, "skipping %#x\n",
1228 /* No processing! */
1233 * For interoperability between 1.8 and 2.0,
1234 * rename "mds" obd device type to "mdt".
1237 char *typename = lustre_cfg_string(lcfg, 1);
1238 char *index = lustre_cfg_string(lcfg, 2);
1240 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1241 strcmp(typename, "mds") == 0)) {
1242 CWARN("For 1.8 interoperability, rename obd "
1243 "type from mds to mdt\n");
1246 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1247 strcmp(index, "type") == 0)) {
1248 CDEBUG(D_INFO, "For 1.8 interoperability, "
1249 "set this index to '0'\n");
1255 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1256 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1257 /* Add inactive instead */
1258 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1260 lustre_cfg_bufs_init(&bufs, lcfg);
1262 if (clli && clli->cfg_instance &&
1263 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1265 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1266 strlen(clli->cfg_instance) + 1;
1267 OBD_ALLOC(inst_name, inst_len);
1268 if (inst_name == NULL)
1269 GOTO(out, rc = -ENOMEM);
1270 sprintf(inst_name, "%s-%s",
1271 lustre_cfg_string(lcfg, 0),
1272 clli->cfg_instance);
1273 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1274 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1275 lcfg->lcfg_command, inst_name);
1278 /* we override the llog's uuid for clients, to insure they
1280 if (clli && clli->cfg_instance &&
1281 lcfg->lcfg_command == LCFG_ATTACH) {
1282 lustre_cfg_bufs_set_string(&bufs, 2,
1283 clli->cfg_uuid.uuid);
1286 * sptlrpc config record, we expect 2 data segments:
1287 * [0]: fs_name/target_name,
1289 * moving them to index [1] and [2], and insert MGC's
1290 * obdname at index [0].
1292 if (clli && clli->cfg_instance == NULL &&
1293 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1294 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1295 bufs.lcfg_buflen[1]);
1296 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1297 bufs.lcfg_buflen[0]);
1298 lustre_cfg_bufs_set_string(&bufs, 0,
1302 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1304 lcfg_new->lcfg_num = lcfg->lcfg_num;
1305 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1307 /* XXX Hack to try to remain binary compatible with
1308 * pre-newconfig logs */
1309 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1310 (lcfg->lcfg_nid >> 32) == 0) {
1311 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1313 lcfg_new->lcfg_nid =
1314 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1315 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1316 lcfg->lcfg_nal, addr,
1317 libcfs_nid2str(lcfg_new->lcfg_nid));
1319 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1322 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1324 rc = class_process_config(lcfg_new);
1325 lustre_cfg_free(lcfg_new);
1328 OBD_FREE(inst_name, inst_len);
1332 CERROR("Unknown llog record type %#x encountered\n",
1338 CERROR("Err %d on cfg command:\n", rc);
1339 class_config_dump_handler(handle, rec, data);
1344 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1345 struct config_llog_instance *cfg)
1347 struct llog_process_cat_data cd = {0, 0};
1348 struct llog_handle *llh;
1352 CDEBUG(D_INFO, "looking up llog %s\n", name);
1353 rc = llog_create(ctxt, &llh, NULL, name);
1357 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1359 GOTO(parse_out, rc);
1361 /* continue processing from where we last stopped to end-of-log */
1363 cd.lpcd_first_idx = cfg->cfg_last_idx;
1364 cd.lpcd_last_idx = 0;
1366 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1368 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1369 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1372 cfg->cfg_last_idx = cd.lpcd_last_idx;
1375 rc2 = llog_close(llh);
1382 int class_config_dump_handler(struct llog_handle * handle,
1383 struct llog_rec_hdr *rec, void *data)
1385 int cfg_len = rec->lrh_len;
1386 char *cfg_buf = (char*) (rec + 1);
1387 char *outstr, *ptr, *end;
1391 OBD_ALLOC(outstr, 256);
1397 if (rec->lrh_type == OBD_CFG_REC) {
1398 struct lustre_cfg *lcfg;
1401 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1404 lcfg = (struct lustre_cfg *)cfg_buf;
1406 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1407 lcfg->lcfg_command);
1408 if (lcfg->lcfg_flags) {
1409 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1412 if (lcfg->lcfg_num) {
1413 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1416 if (lcfg->lcfg_nid) {
1417 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1418 libcfs_nid2str(lcfg->lcfg_nid),
1421 if (lcfg->lcfg_command == LCFG_MARKER) {
1422 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1423 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1424 marker->cm_step, marker->cm_flags,
1425 marker->cm_tgtname, marker->cm_comment);
1427 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1428 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1429 lustre_cfg_string(lcfg, i));
1432 LCONSOLE(D_WARNING, " %s\n", outstr);
1434 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1438 OBD_FREE(outstr, 256);
1442 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1443 struct config_llog_instance *cfg)
1445 struct llog_handle *llh;
1449 LCONSOLE_INFO("Dumping config log %s\n", name);
1451 rc = llog_create(ctxt, &llh, NULL, name);
1455 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1457 GOTO(parse_out, rc);
1459 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1461 rc2 = llog_close(llh);
1465 LCONSOLE_INFO("End config log %s\n", name);
1470 /** Call class_cleanup and class_detach.
1471 * "Manual" only in the sense that we're faking lcfg commands.
1473 int class_manual_cleanup(struct obd_device *obd)
1476 struct lustre_cfg *lcfg;
1477 struct lustre_cfg_bufs bufs;
1482 CERROR("empty cleanup\n");
1491 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1492 obd->obd_name, flags);
1494 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1495 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1496 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1500 rc = class_process_config(lcfg);
1502 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1506 /* the lcfg is almost the same for both ops */
1507 lcfg->lcfg_command = LCFG_DETACH;
1508 rc = class_process_config(lcfg);
1510 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1512 lustre_cfg_free(lcfg);
1517 * uuid<->export lustre hash operations
1521 uuid_hash(cfs_hash_t *hs, void *key, unsigned mask)
1523 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1524 sizeof(((struct obd_uuid *)key)->uuid), mask);
1528 uuid_key(cfs_hlist_node_t *hnode)
1530 struct obd_export *exp;
1532 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1534 return &exp->exp_client_uuid;
1538 * NOTE: It is impossible to find an export that is in failed
1539 * state with this function
1542 uuid_keycmp(void *key, cfs_hlist_node_t *hnode)
1544 struct obd_export *exp;
1547 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1549 return obd_uuid_equals((struct obd_uuid *)key,&exp->exp_client_uuid) &&
1554 uuid_export_object(cfs_hlist_node_t *hnode)
1556 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1560 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1562 struct obd_export *exp;
1564 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1565 class_export_get(exp);
1569 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1571 struct obd_export *exp;
1573 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1574 class_export_put(exp);
1577 static cfs_hash_ops_t uuid_hash_ops = {
1578 .hs_hash = uuid_hash,
1580 .hs_keycmp = uuid_keycmp,
1581 .hs_object = uuid_export_object,
1582 .hs_get = uuid_export_get,
1583 .hs_put_locked = uuid_export_put_locked,
1588 * nid<->export hash operations
1592 nid_hash(cfs_hash_t *hs, void *key, unsigned mask)
1594 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1598 nid_key(cfs_hlist_node_t *hnode)
1600 struct obd_export *exp;
1602 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1604 RETURN(&exp->exp_connection->c_peer.nid);
1608 * NOTE: It is impossible to find an export that is in failed
1609 * state with this function
1612 nid_kepcmp(void *key, cfs_hlist_node_t *hnode)
1614 struct obd_export *exp;
1617 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1619 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1624 nid_export_object(cfs_hlist_node_t *hnode)
1626 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1630 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1632 struct obd_export *exp;
1634 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1635 class_export_get(exp);
1639 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1641 struct obd_export *exp;
1643 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1644 class_export_put(exp);
1647 static cfs_hash_ops_t nid_hash_ops = {
1648 .hs_hash = nid_hash,
1650 .hs_keycmp = nid_kepcmp,
1651 .hs_object = nid_export_object,
1652 .hs_get = nid_export_get,
1653 .hs_put_locked = nid_export_put_locked,
1658 * nid<->nidstats hash operations
1662 nidstats_key(cfs_hlist_node_t *hnode)
1664 struct nid_stat *ns;
1666 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1672 nidstats_keycmp(void *key, cfs_hlist_node_t *hnode)
1674 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1678 nidstats_object(cfs_hlist_node_t *hnode)
1680 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1684 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1686 struct nid_stat *ns;
1688 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1693 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1695 struct nid_stat *ns;
1697 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1701 static cfs_hash_ops_t nid_stat_hash_ops = {
1702 .hs_hash = nid_hash,
1703 .hs_key = nidstats_key,
1704 .hs_keycmp = nidstats_keycmp,
1705 .hs_object = nidstats_object,
1706 .hs_get = nidstats_get,
1707 .hs_put_locked = nidstats_put_locked,