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, Whamcloud, Inc.
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);
77 EXPORT_SYMBOL(class_find_param);
80 * Finds a parameter in \a params and copies it to \a copy.
82 * Leading spaces are skipped. Next space or end of string is the
83 * parameter terminator with the exception that spaces inside single or double
84 * quotes get included into a parameter. The parameter is copied into \a copy
85 * which has to be allocated big enough by a caller, quotes are stripped in
86 * the copy and the copy is terminated by 0.
88 * On return \a params is set to next parameter or to NULL if last
89 * parameter is returned.
91 * \retval 0 if parameter is returned in \a copy
93 * \retval -EINVAL if unbalanced quota is found
95 int class_get_next_param(char **params, char *copy)
110 q1 = strpbrk(str, " '\"");
113 memcpy(copy, str, len);
120 memcpy(copy, str, len);
126 memcpy(copy, str, len);
129 /* search for the matching closing quote */
131 q2 = strchr(str, *q1);
133 CERROR("Unbalanced quota in parameters: \"%s\"\n",
138 memcpy(copy, str, len);
144 EXPORT_SYMBOL(class_get_next_param);
146 /* returns 0 if this is the first key in the buffer, else 1.
147 valp points to first char after key. */
148 int class_match_param(char *buf, char *key, char **valp)
153 if (memcmp(buf, key, strlen(key)) != 0)
157 *valp = buf + strlen(key);
161 EXPORT_SYMBOL(class_match_param);
163 static int parse_nid(char *buf, void *value)
165 lnet_nid_t *nid = (lnet_nid_t *)value;
167 *nid = libcfs_str2nid(buf);
168 if (*nid != LNET_NID_ANY)
171 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
175 static int parse_net(char *buf, void *value)
177 __u32 *net = (__u32 *)value;
179 *net = libcfs_str2net(buf);
180 CDEBUG(D_INFO, "Net %s\n", libcfs_net2str(*net));
192 endh is set to next separator */
193 static int class_parse_value(char *buf, int opc, void *value, char **endh)
201 while (*buf == ',' || *buf == ':')
203 if (*buf == ' ' || *buf == '/' || *buf == '\0')
206 /* nid separators or end of nids */
207 endp = strpbrk(buf, ",: /");
209 endp = buf + strlen(buf);
216 case CLASS_PARSE_NID:
217 rc = parse_nid(buf, value);
219 case CLASS_PARSE_NET:
220 rc = parse_net(buf, value);
231 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
233 return class_parse_value(buf, CLASS_PARSE_NID, (void *)nid, endh);
235 EXPORT_SYMBOL(class_parse_nid);
237 int class_parse_net(char *buf, __u32 *net, char **endh)
239 return class_parse_value(buf, CLASS_PARSE_NET, (void *)net, endh);
241 EXPORT_SYMBOL(class_parse_net);
243 /* 1 param contains key and match
244 * 0 param contains key and not match
245 * -1 param does not contain key
247 int class_match_nid(char *buf, char *key, lnet_nid_t nid)
252 while (class_find_param(buf, key, &buf) == 0) {
253 /* please restrict to the nids pertaining to
254 * the specified nids */
255 while (class_parse_nid(buf, &tmp, &buf) == 0) {
263 EXPORT_SYMBOL(class_match_nid);
265 int class_match_net(char *buf, char *key, __u32 net)
270 while (class_find_param(buf, key, &buf) == 0) {
271 /* please restrict to the nids pertaining to
272 * the specified networks */
273 while (class_parse_net(buf, &tmp, &buf) == 0) {
281 EXPORT_SYMBOL(class_match_net);
283 /********************** class fns **********************/
286 * Create a new obd device and set the type, name and uuid. If successful,
287 * the new device can be accessed by either name or uuid.
289 int class_attach(struct lustre_cfg *lcfg)
291 struct obd_device *obd = NULL;
292 char *typename, *name, *uuid;
296 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
297 CERROR("No type passed!\n");
300 typename = lustre_cfg_string(lcfg, 1);
302 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
303 CERROR("No name passed!\n");
306 name = lustre_cfg_string(lcfg, 0);
308 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
309 CERROR("No UUID passed!\n");
312 uuid = lustre_cfg_string(lcfg, 2);
314 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
315 MKSTR(typename), MKSTR(name), MKSTR(uuid));
317 obd = class_newdev(typename, name);
319 /* Already exists or out of obds */
322 CERROR("Cannot create device %s of type %s : %d\n",
326 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
328 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
329 "obd %p obd_magic %08X != %08X\n",
330 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
331 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0,
332 "%p obd_name %s != %s\n", obd, obd->obd_name, name);
334 cfs_rwlock_init(&obd->obd_pool_lock);
335 obd->obd_pool_limit = 0;
336 obd->obd_pool_slv = 0;
338 CFS_INIT_LIST_HEAD(&obd->obd_exports);
339 CFS_INIT_LIST_HEAD(&obd->obd_unlinked_exports);
340 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
341 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
342 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
343 cfs_spin_lock_init(&obd->obd_nid_lock);
344 cfs_spin_lock_init(&obd->obd_dev_lock);
345 cfs_mutex_init(&obd->obd_dev_mutex);
346 cfs_spin_lock_init(&obd->obd_osfs_lock);
347 /* obd->obd_osfs_age must be set to a value in the distant
348 * past to guarantee a fresh statfs is fetched on mount. */
349 obd->obd_osfs_age = cfs_time_shift_64(-1000);
351 /* XXX belongs in setup not attach */
352 cfs_init_rwsem(&obd->obd_observer_link_sem);
354 cfs_init_timer(&obd->obd_recovery_timer);
355 cfs_spin_lock_init(&obd->obd_recovery_task_lock);
356 cfs_waitq_init(&obd->obd_next_transno_waitq);
357 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
358 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
359 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
360 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
361 CFS_INIT_LIST_HEAD(&obd->obd_evict_list);
363 llog_group_init(&obd->obd_olg, FID_SEQ_LLOG);
365 obd->obd_conn_inprogress = 0;
368 if (len >= sizeof(obd->obd_uuid)) {
369 CERROR("uuid must be < %d bytes long\n",
370 (int)sizeof(obd->obd_uuid));
371 GOTO(out, rc = -EINVAL);
373 memcpy(obd->obd_uuid.uuid, uuid, len);
376 if (OBP(obd, attach)) {
377 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
379 GOTO(out, rc = -EINVAL);
382 /* Detach drops this */
383 cfs_spin_lock(&obd->obd_dev_lock);
384 cfs_atomic_set(&obd->obd_refcount, 1);
385 cfs_spin_unlock(&obd->obd_dev_lock);
386 lu_ref_init(&obd->obd_reference);
387 lu_ref_add(&obd->obd_reference, "attach", obd);
389 obd->obd_attached = 1;
390 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
391 obd->obd_minor, typename, cfs_atomic_read(&obd->obd_refcount));
395 class_release_dev(obd);
399 EXPORT_SYMBOL(class_attach);
401 /** Create hashes, self-export, and call type-specific setup.
402 * Setup is effectively the "start this obd" call.
404 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
407 struct obd_export *exp;
410 LASSERT(obd != NULL);
411 LASSERTF(obd == class_num2obd(obd->obd_minor),
412 "obd %p != obd_devs[%d] %p\n",
413 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
414 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
415 "obd %p obd_magic %08x != %08x\n",
416 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
418 /* have we attached a type to this device? */
419 if (!obd->obd_attached) {
420 CERROR("Device %d not attached\n", obd->obd_minor);
424 if (obd->obd_set_up) {
425 CERROR("Device %d already setup (type %s)\n",
426 obd->obd_minor, obd->obd_type->typ_name);
430 /* is someone else setting us up right now? (attach inits spinlock) */
431 cfs_spin_lock(&obd->obd_dev_lock);
432 if (obd->obd_starting) {
433 cfs_spin_unlock(&obd->obd_dev_lock);
434 CERROR("Device %d setup in progress (type %s)\n",
435 obd->obd_minor, obd->obd_type->typ_name);
438 /* just leave this on forever. I can't use obd_set_up here because
439 other fns check that status, and we're not actually set up yet. */
440 obd->obd_starting = 1;
441 obd->obd_uuid_hash = NULL;
442 obd->obd_nid_hash = NULL;
443 obd->obd_nid_stats_hash = NULL;
444 cfs_spin_unlock(&obd->obd_dev_lock);
446 /* create an uuid-export lustre hash */
447 obd->obd_uuid_hash = cfs_hash_create("UUID_HASH",
450 HASH_UUID_BKT_BITS, 0,
453 &uuid_hash_ops, CFS_HASH_DEFAULT);
454 if (!obd->obd_uuid_hash)
455 GOTO(err_hash, err = -ENOMEM);
457 /* create a nid-export lustre hash */
458 obd->obd_nid_hash = cfs_hash_create("NID_HASH",
461 HASH_NID_BKT_BITS, 0,
464 &nid_hash_ops, CFS_HASH_DEFAULT);
465 if (!obd->obd_nid_hash)
466 GOTO(err_hash, err = -ENOMEM);
468 /* create a nid-stats lustre hash */
469 obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
470 HASH_NID_STATS_CUR_BITS,
471 HASH_NID_STATS_MAX_BITS,
472 HASH_NID_STATS_BKT_BITS, 0,
475 &nid_stat_hash_ops, CFS_HASH_DEFAULT);
476 if (!obd->obd_nid_stats_hash)
477 GOTO(err_hash, err = -ENOMEM);
479 exp = class_new_export(obd, &obd->obd_uuid);
481 GOTO(err_hash, err = PTR_ERR(exp));
483 obd->obd_self_export = exp;
484 cfs_list_del_init(&exp->exp_obd_chain_timed);
485 class_export_put(exp);
487 err = obd_setup(obd, lcfg);
493 cfs_spin_lock(&obd->obd_dev_lock);
494 /* cleanup drops this */
495 class_incref(obd, "setup", obd);
496 cfs_spin_unlock(&obd->obd_dev_lock);
498 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
499 obd->obd_name, obd->obd_uuid.uuid);
503 if (obd->obd_self_export) {
504 class_unlink_export(obd->obd_self_export);
505 obd->obd_self_export = NULL;
508 if (obd->obd_uuid_hash) {
509 cfs_hash_putref(obd->obd_uuid_hash);
510 obd->obd_uuid_hash = NULL;
512 if (obd->obd_nid_hash) {
513 cfs_hash_putref(obd->obd_nid_hash);
514 obd->obd_nid_hash = NULL;
516 if (obd->obd_nid_stats_hash) {
517 cfs_hash_putref(obd->obd_nid_stats_hash);
518 obd->obd_nid_stats_hash = NULL;
520 obd->obd_starting = 0;
521 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
524 EXPORT_SYMBOL(class_setup);
526 /** We have finished using this obd and are ready to destroy it.
527 * There can be no more references to this obd.
529 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
533 if (obd->obd_set_up) {
534 CERROR("OBD device %d still set up\n", obd->obd_minor);
538 cfs_spin_lock(&obd->obd_dev_lock);
539 if (!obd->obd_attached) {
540 cfs_spin_unlock(&obd->obd_dev_lock);
541 CERROR("OBD device %d not attached\n", obd->obd_minor);
544 obd->obd_attached = 0;
545 cfs_spin_unlock(&obd->obd_dev_lock);
547 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
548 obd->obd_name, obd->obd_uuid.uuid);
550 class_decref(obd, "attach", obd);
553 EXPORT_SYMBOL(class_detach);
555 /** Start shutting down the obd. There may be in-progess ops when
556 * this is called. We tell them to start shutting down with a call
557 * to class_disconnect_exports().
559 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
565 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
567 if (!obd->obd_set_up) {
568 CERROR("Device %d not setup\n", obd->obd_minor);
572 cfs_spin_lock(&obd->obd_dev_lock);
573 if (obd->obd_stopping) {
574 cfs_spin_unlock(&obd->obd_dev_lock);
575 CERROR("OBD %d already stopping\n", obd->obd_minor);
578 /* Leave this on forever */
579 obd->obd_stopping = 1;
581 /* wait for already-arrived-connections to finish. */
582 while (obd->obd_conn_inprogress > 0) {
583 cfs_spin_unlock(&obd->obd_dev_lock);
587 cfs_spin_lock(&obd->obd_dev_lock);
589 cfs_spin_unlock(&obd->obd_dev_lock);
591 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
592 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
598 LCONSOLE_WARN("Failing over %s\n",
601 obd->obd_no_transno = 1;
602 obd->obd_no_recov = 1;
603 if (OBP(obd, iocontrol)) {
604 obd_iocontrol(OBD_IOC_SYNC,
605 obd->obd_self_export,
610 CERROR("Unrecognised flag '%c'\n", *flag);
614 LASSERT(obd->obd_self_export);
616 /* The three references that should be remaining are the
617 * obd_self_export and the attach and setup references. */
618 if (cfs_atomic_read(&obd->obd_refcount) > 3) {
619 /* refcounf - 3 might be the number of real exports
620 (excluding self export). But class_incref is called
621 by other things as well, so don't count on it. */
622 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
623 obd->obd_name, cfs_atomic_read(&obd->obd_refcount) - 3);
624 dump_exports(obd, 0);
625 class_disconnect_exports(obd);
628 /* Precleanup, we must make sure all exports get destroyed. */
629 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
631 CERROR("Precleanup %s returned %d\n",
634 /* destroy an uuid-export hash body */
635 if (obd->obd_uuid_hash) {
636 cfs_hash_putref(obd->obd_uuid_hash);
637 obd->obd_uuid_hash = NULL;
640 /* destroy a nid-export hash body */
641 if (obd->obd_nid_hash) {
642 cfs_hash_putref(obd->obd_nid_hash);
643 obd->obd_nid_hash = NULL;
646 /* destroy a nid-stats hash body */
647 if (obd->obd_nid_stats_hash) {
648 cfs_hash_putref(obd->obd_nid_stats_hash);
649 obd->obd_nid_stats_hash = NULL;
652 class_decref(obd, "setup", obd);
657 EXPORT_SYMBOL(class_cleanup);
659 struct obd_device *class_incref(struct obd_device *obd,
660 const char *scope, const void *source)
662 lu_ref_add_atomic(&obd->obd_reference, scope, source);
663 cfs_atomic_inc(&obd->obd_refcount);
664 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
665 cfs_atomic_read(&obd->obd_refcount));
669 EXPORT_SYMBOL(class_incref);
671 void class_decref(struct obd_device *obd, const char *scope, const void *source)
676 cfs_spin_lock(&obd->obd_dev_lock);
677 cfs_atomic_dec(&obd->obd_refcount);
678 refs = cfs_atomic_read(&obd->obd_refcount);
679 cfs_spin_unlock(&obd->obd_dev_lock);
680 lu_ref_del(&obd->obd_reference, scope, source);
682 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
684 if ((refs == 1) && obd->obd_stopping) {
685 /* All exports have been destroyed; there should
686 be no more in-progress ops by this point.*/
688 cfs_spin_lock(&obd->obd_self_export->exp_lock);
689 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
690 cfs_spin_unlock(&obd->obd_self_export->exp_lock);
692 /* note that we'll recurse into class_decref again */
693 class_unlink_export(obd->obd_self_export);
698 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
699 obd->obd_name, obd->obd_uuid.uuid);
700 LASSERT(!obd->obd_attached);
701 if (obd->obd_stopping) {
702 /* If we're not stopping, we were never set up */
703 err = obd_cleanup(obd);
705 CERROR("Cleanup %s returned %d\n",
708 if (OBP(obd, detach)) {
709 err = OBP(obd, detach)(obd);
711 CERROR("Detach returned %d\n", err);
713 class_release_dev(obd);
716 EXPORT_SYMBOL(class_decref);
718 /** Add a failover nid location.
719 * Client obd types contact server obd types using this nid list.
721 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
723 struct obd_import *imp;
724 struct obd_uuid uuid;
728 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
729 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
730 CERROR("invalid conn_uuid\n");
733 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
734 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
735 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
736 CERROR("can't add connection on non-client dev\n");
740 imp = obd->u.cli.cl_import;
742 CERROR("try to add conn on immature client dev\n");
746 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
747 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
752 /** Remove a failover nid location.
754 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
756 struct obd_import *imp;
757 struct obd_uuid uuid;
761 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
762 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
763 CERROR("invalid conn_uuid\n");
766 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
767 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
768 CERROR("can't del connection on non-client dev\n");
772 imp = obd->u.cli.cl_import;
774 CERROR("try to del conn on immature client dev\n");
778 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
779 rc = obd_del_conn(imp, &uuid);
784 CFS_LIST_HEAD(lustre_profile_list);
786 struct lustre_profile *class_get_profile(const char * prof)
788 struct lustre_profile *lprof;
791 cfs_list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
792 if (!strcmp(lprof->lp_profile, prof)) {
798 EXPORT_SYMBOL(class_get_profile);
800 /** Create a named "profile".
801 * This defines the mdc and osc names to use for a client.
802 * This also is used to define the lov to be used by a mdt.
804 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
805 int mdclen, char *mdc)
807 struct lustre_profile *lprof;
811 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
813 OBD_ALLOC(lprof, sizeof(*lprof));
816 CFS_INIT_LIST_HEAD(&lprof->lp_list);
818 LASSERT(proflen == (strlen(prof) + 1));
819 OBD_ALLOC(lprof->lp_profile, proflen);
820 if (lprof->lp_profile == NULL)
821 GOTO(out, err = -ENOMEM);
822 memcpy(lprof->lp_profile, prof, proflen);
824 LASSERT(osclen == (strlen(osc) + 1));
825 OBD_ALLOC(lprof->lp_dt, osclen);
826 if (lprof->lp_dt == NULL)
827 GOTO(out, err = -ENOMEM);
828 memcpy(lprof->lp_dt, osc, osclen);
831 LASSERT(mdclen == (strlen(mdc) + 1));
832 OBD_ALLOC(lprof->lp_md, mdclen);
833 if (lprof->lp_md == NULL)
834 GOTO(out, err = -ENOMEM);
835 memcpy(lprof->lp_md, mdc, mdclen);
838 cfs_list_add(&lprof->lp_list, &lustre_profile_list);
843 OBD_FREE(lprof->lp_md, mdclen);
845 OBD_FREE(lprof->lp_dt, osclen);
846 if (lprof->lp_profile)
847 OBD_FREE(lprof->lp_profile, proflen);
848 OBD_FREE(lprof, sizeof(*lprof));
852 void class_del_profile(const char *prof)
854 struct lustre_profile *lprof;
857 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
859 lprof = class_get_profile(prof);
861 cfs_list_del(&lprof->lp_list);
862 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
863 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
865 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
866 OBD_FREE(lprof, sizeof *lprof);
870 EXPORT_SYMBOL(class_del_profile);
873 void class_del_profiles(void)
875 struct lustre_profile *lprof, *n;
878 cfs_list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
879 cfs_list_del(&lprof->lp_list);
880 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
881 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
883 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
884 OBD_FREE(lprof, sizeof *lprof);
888 EXPORT_SYMBOL(class_del_profiles);
890 static int class_set_global(char *ptr, int val, struct lustre_cfg *lcfg)
893 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
895 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
897 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
899 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
900 at_early_margin = val;
901 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
903 else if (class_match_param(ptr, PARAM_JOBID_VAR, NULL) == 0) {
904 memset(obd_jobid_var, 0, JOBSTATS_JOBID_VAR_MAX_LEN + 1);
905 memcpy(obd_jobid_var, lustre_cfg_string(lcfg, 2),
906 JOBSTATS_JOBID_VAR_MAX_LEN + 1);
910 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
915 /* We can't call ll_process_config directly because it lives in a module that
916 must be loaded after this one. */
917 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
919 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
921 client_process_config = cpc;
923 EXPORT_SYMBOL(lustre_register_client_process_config);
926 * Rename the proc parameter in \a cfg with a new name \a new_name.
928 * \param cfg config structure which contains the proc parameter
929 * \param new_name new name of the proc parameter
931 * \retval valid-pointer pointer to the newly-allocated config structure
932 * which contains the renamed proc parameter
933 * \retval ERR_PTR(-EINVAL) if \a cfg or \a new_name is NULL, or \a cfg does
934 * not contain a proc parameter
935 * \retval ERR_PTR(-ENOMEM) if memory allocation failure occurs
937 struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
938 const char *new_name)
940 struct lustre_cfg_bufs *bufs = NULL;
941 struct lustre_cfg *new_cfg = NULL;
943 char *new_param = NULL;
949 if (cfg == NULL || new_name == NULL)
950 RETURN(ERR_PTR(-EINVAL));
952 param = lustre_cfg_string(cfg, 1);
954 RETURN(ERR_PTR(-EINVAL));
956 value = strchr(param, '=');
958 name_len = strlen(param);
960 name_len = value - param;
962 new_len = LUSTRE_CFG_BUFLEN(cfg, 1) + strlen(new_name) - name_len;
964 OBD_ALLOC(new_param, new_len);
965 if (new_param == NULL)
966 RETURN(ERR_PTR(-ENOMEM));
968 strcpy(new_param, new_name);
970 strcat(new_param, value);
974 OBD_FREE(new_param, new_len);
975 RETURN(ERR_PTR(-ENOMEM));
978 lustre_cfg_bufs_reset(bufs, NULL);
979 lustre_cfg_bufs_init(bufs, cfg);
980 lustre_cfg_bufs_set_string(bufs, 1, new_param);
982 new_cfg = lustre_cfg_new(cfg->lcfg_command, bufs);
984 OBD_FREE(new_param, new_len);
987 RETURN(ERR_PTR(-ENOMEM));
989 new_cfg->lcfg_num = cfg->lcfg_num;
990 new_cfg->lcfg_flags = cfg->lcfg_flags;
991 new_cfg->lcfg_nid = cfg->lcfg_nid;
992 new_cfg->lcfg_nal = cfg->lcfg_nal;
996 EXPORT_SYMBOL(lustre_cfg_rename);
998 /** Process configuration commands given in lustre_cfg form.
999 * These may come from direct calls (e.g. class_manual_cleanup)
1000 * or processing the config llog, or ioctl from lctl.
1002 int class_process_config(struct lustre_cfg *lcfg)
1004 struct obd_device *obd;
1007 LASSERT(lcfg && !IS_ERR(lcfg));
1008 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
1010 /* Commands that don't need a device */
1011 switch(lcfg->lcfg_command) {
1013 err = class_attach(lcfg);
1016 case LCFG_ADD_UUID: {
1017 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
1018 " (%s)\n", lustre_cfg_string(lcfg, 1),
1019 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
1021 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
1024 case LCFG_DEL_UUID: {
1025 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
1026 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
1027 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
1029 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
1032 case LCFG_MOUNTOPT: {
1033 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
1034 lustre_cfg_string(lcfg, 1),
1035 lustre_cfg_string(lcfg, 2),
1036 lustre_cfg_string(lcfg, 3));
1037 /* set these mount options somewhere, so ll_fill_super
1039 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
1040 lustre_cfg_string(lcfg, 1),
1041 LUSTRE_CFG_BUFLEN(lcfg, 2),
1042 lustre_cfg_string(lcfg, 2),
1043 LUSTRE_CFG_BUFLEN(lcfg, 3),
1044 lustre_cfg_string(lcfg, 3));
1047 case LCFG_DEL_MOUNTOPT: {
1048 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
1049 lustre_cfg_string(lcfg, 1));
1050 class_del_profile(lustre_cfg_string(lcfg, 1));
1053 case LCFG_SET_TIMEOUT: {
1054 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
1055 obd_timeout, lcfg->lcfg_num);
1056 obd_timeout = max(lcfg->lcfg_num, 1U);
1059 case LCFG_SET_LDLM_TIMEOUT: {
1060 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
1061 ldlm_timeout, lcfg->lcfg_num);
1062 ldlm_timeout = max(lcfg->lcfg_num, 1U);
1063 if (ldlm_timeout >= obd_timeout)
1064 ldlm_timeout = max(obd_timeout / 3, 1U);
1068 case LCFG_SET_UPCALL: {
1069 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
1070 /* COMPAT_146 Don't fail on old configs */
1074 struct cfg_marker *marker;
1075 marker = lustre_cfg_buf(lcfg, 1);
1076 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
1077 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
1082 /* llite has no obd */
1083 if ((class_match_param(lustre_cfg_string(lcfg, 1),
1084 PARAM_LLITE, 0) == 0) &&
1085 client_process_config) {
1086 err = (*client_process_config)(lcfg);
1088 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
1089 PARAM_SYS, &tmp) == 0)) {
1090 /* Global param settings */
1091 err = class_set_global(tmp, lcfg->lcfg_num, lcfg);
1092 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
1093 unknown globals would cause config to fail */
1095 CWARN("Ignoring unknown param %s\n", tmp);
1104 /* Commands that require a device */
1105 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
1107 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
1108 CERROR("this lcfg command requires a device name\n");
1110 CERROR("no device for: %s\n",
1111 lustre_cfg_string(lcfg, 0));
1113 GOTO(out, err = -EINVAL);
1116 switch(lcfg->lcfg_command) {
1118 err = class_setup(obd, lcfg);
1122 err = class_detach(obd, lcfg);
1125 case LCFG_CLEANUP: {
1126 err = class_cleanup(obd, lcfg);
1129 case LCFG_ADD_CONN: {
1130 err = class_add_conn(obd, lcfg);
1133 case LCFG_DEL_CONN: {
1134 err = class_del_conn(obd, lcfg);
1137 case LCFG_POOL_NEW: {
1138 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
1142 case LCFG_POOL_ADD: {
1143 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
1144 lustre_cfg_string(lcfg, 3));
1148 case LCFG_POOL_REM: {
1149 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
1150 lustre_cfg_string(lcfg, 3));
1154 case LCFG_POOL_DEL: {
1155 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
1160 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
1166 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
1167 CWARN("Ignoring error %d on optional command %#x\n", err,
1168 lcfg->lcfg_command);
1173 EXPORT_SYMBOL(class_process_config);
1175 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
1176 struct lustre_cfg *lcfg, void *data)
1179 struct lprocfs_vars *var;
1181 int i, keylen, vallen;
1182 int matched = 0, j = 0;
1187 if (lcfg->lcfg_command != LCFG_PARAM) {
1188 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1192 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1193 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1194 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1195 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1196 key = lustre_cfg_buf(lcfg, i);
1197 /* Strip off prefix */
1198 class_match_param(key, prefix, &key);
1199 sval = strchr(key, '=');
1200 if (!sval || (*(sval + 1) == 0)) {
1201 CERROR("Can't parse param %s (missing '=')\n", key);
1202 /* rc = -EINVAL; continue parsing other params */
1205 keylen = sval - key;
1207 vallen = strlen(sval);
1210 /* Search proc entries */
1211 while (lvars[j].name) {
1213 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1214 keylen == strlen(var->name)) {
1217 if (var->write_fptr) {
1221 rc = (var->write_fptr)(NULL, sval,
1230 /* If the prefix doesn't match, return error so we
1231 can pass it down the stack */
1232 if (strnchr(key, keylen, '.'))
1234 CERROR("%s: unknown param %s\n",
1235 (char *)lustre_cfg_string(lcfg, 0), key);
1236 /* rc = -EINVAL; continue parsing other params */
1238 } else if (rc < 0) {
1239 CERROR("writing proc entry %s err %d\n",
1243 CDEBUG(D_CONFIG, "%s.%.*s: set parameter %.*s=%s\n",
1244 lustre_cfg_string(lcfg, 0),
1245 (int)strlen(prefix) - 1, prefix,
1246 (int)(sval - key - 1), key, sval);
1256 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1257 /* Don't throw config error */
1261 EXPORT_SYMBOL(class_process_proc_param);
1263 int class_config_dump_handler(struct llog_handle * handle,
1264 struct llog_rec_hdr *rec, void *data);
1267 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1269 #define lustre_check_exclusion(a,b) 0
1272 /** Parse a configuration llog, doing various manipulations on them
1273 * for various reasons, (modifications for compatibility, skip obsolete
1274 * records, change uuids, etc), then class_process_config() resulting
1277 static int class_config_llog_handler(struct llog_handle * handle,
1278 struct llog_rec_hdr *rec, void *data)
1280 struct config_llog_instance *clli = data;
1281 int cfg_len = rec->lrh_len;
1282 char *cfg_buf = (char*) (rec + 1);
1286 //class_config_dump_handler(handle, rec, data);
1288 switch (rec->lrh_type) {
1290 struct lustre_cfg *lcfg, *lcfg_new;
1291 struct lustre_cfg_bufs bufs;
1292 char *inst_name = NULL;
1294 int inst = 0, swab = 0;
1296 lcfg = (struct lustre_cfg *)cfg_buf;
1297 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1298 lustre_swab_lustre_cfg(lcfg);
1302 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1306 /* Figure out config state info */
1307 if (lcfg->lcfg_command == LCFG_MARKER) {
1308 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1309 lustre_swab_cfg_marker(marker, swab,
1310 LUSTRE_CFG_BUFLEN(lcfg, 1));
1311 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1312 clli->cfg_flags, marker->cm_flags);
1313 if (marker->cm_flags & CM_START) {
1314 /* all previous flags off */
1315 clli->cfg_flags = CFG_F_MARKER;
1316 if (marker->cm_flags & CM_SKIP) {
1317 clli->cfg_flags |= CFG_F_SKIP;
1318 CDEBUG(D_CONFIG, "SKIP #%d\n",
1320 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1322 lustre_check_exclusion(clli->cfg_sb,
1323 marker->cm_tgtname))) {
1324 clli->cfg_flags |= CFG_F_EXCLUDE;
1325 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1328 } else if (marker->cm_flags & CM_END) {
1329 clli->cfg_flags = 0;
1332 /* A config command without a start marker before it is
1333 illegal (post 146) */
1334 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1335 !(clli->cfg_flags & CFG_F_MARKER) &&
1336 (lcfg->lcfg_command != LCFG_MARKER)) {
1337 CWARN("Config not inside markers, ignoring! "
1338 "(inst: %p, uuid: %s, flags: %#x)\n",
1340 clli->cfg_uuid.uuid, clli->cfg_flags);
1341 clli->cfg_flags |= CFG_F_SKIP;
1343 if (clli->cfg_flags & CFG_F_SKIP) {
1344 CDEBUG(D_CONFIG, "skipping %#x\n",
1347 /* No processing! */
1352 * For interoperability between 1.8 and 2.0,
1353 * rename "mds" obd device type to "mdt".
1356 char *typename = lustre_cfg_string(lcfg, 1);
1357 char *index = lustre_cfg_string(lcfg, 2);
1359 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1360 strcmp(typename, "mds") == 0)) {
1361 CWARN("For 1.8 interoperability, rename obd "
1362 "type from mds to mdt\n");
1365 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1366 strcmp(index, "type") == 0)) {
1367 CDEBUG(D_INFO, "For 1.8 interoperability, "
1368 "set this index to '0'\n");
1374 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1375 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1376 /* Add inactive instead */
1377 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1379 lustre_cfg_bufs_init(&bufs, lcfg);
1381 if (clli && clli->cfg_instance &&
1382 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1384 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1385 sizeof(clli->cfg_instance) * 2 + 4;
1386 OBD_ALLOC(inst_name, inst_len);
1387 if (inst_name == NULL)
1388 GOTO(out, rc = -ENOMEM);
1389 sprintf(inst_name, "%s-%p",
1390 lustre_cfg_string(lcfg, 0),
1391 clli->cfg_instance);
1392 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1393 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1394 lcfg->lcfg_command, inst_name);
1397 /* we override the llog's uuid for clients, to insure they
1399 if (clli && clli->cfg_instance != NULL &&
1400 lcfg->lcfg_command == LCFG_ATTACH) {
1401 lustre_cfg_bufs_set_string(&bufs, 2,
1402 clli->cfg_uuid.uuid);
1405 * sptlrpc config record, we expect 2 data segments:
1406 * [0]: fs_name/target_name,
1408 * moving them to index [1] and [2], and insert MGC's
1409 * obdname at index [0].
1411 if (clli && clli->cfg_instance == NULL &&
1412 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1413 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1414 bufs.lcfg_buflen[1]);
1415 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1416 bufs.lcfg_buflen[0]);
1417 lustre_cfg_bufs_set_string(&bufs, 0,
1421 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1423 lcfg_new->lcfg_num = lcfg->lcfg_num;
1424 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1426 /* XXX Hack to try to remain binary compatible with
1427 * pre-newconfig logs */
1428 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1429 (lcfg->lcfg_nid >> 32) == 0) {
1430 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1432 lcfg_new->lcfg_nid =
1433 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1434 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1435 lcfg->lcfg_nal, addr,
1436 libcfs_nid2str(lcfg_new->lcfg_nid));
1438 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1441 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1443 rc = class_process_config(lcfg_new);
1444 lustre_cfg_free(lcfg_new);
1447 OBD_FREE(inst_name, inst_len);
1451 CERROR("Unknown llog record type %#x encountered\n",
1457 CERROR("Err %d on cfg command:\n", rc);
1458 class_config_dump_handler(handle, rec, data);
1463 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1464 struct config_llog_instance *cfg)
1466 struct llog_process_cat_data cd = {0, 0};
1467 struct llog_handle *llh;
1471 CDEBUG(D_INFO, "looking up llog %s\n", name);
1472 rc = llog_create(ctxt, &llh, NULL, name);
1476 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1478 GOTO(parse_out, rc);
1480 /* continue processing from where we last stopped to end-of-log */
1482 cd.lpcd_first_idx = cfg->cfg_last_idx;
1483 cd.lpcd_last_idx = 0;
1485 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1487 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1488 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1491 cfg->cfg_last_idx = cd.lpcd_last_idx;
1494 rc2 = llog_close(llh);
1500 EXPORT_SYMBOL(class_config_parse_llog);
1502 int class_config_dump_handler(struct llog_handle * handle,
1503 struct llog_rec_hdr *rec, void *data)
1505 int cfg_len = rec->lrh_len;
1506 char *cfg_buf = (char*) (rec + 1);
1507 char *outstr, *ptr, *end;
1511 OBD_ALLOC(outstr, 256);
1517 if (rec->lrh_type == OBD_CFG_REC) {
1518 struct lustre_cfg *lcfg;
1521 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1524 lcfg = (struct lustre_cfg *)cfg_buf;
1526 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1527 lcfg->lcfg_command);
1528 if (lcfg->lcfg_flags) {
1529 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1532 if (lcfg->lcfg_num) {
1533 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1536 if (lcfg->lcfg_nid) {
1537 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1538 libcfs_nid2str(lcfg->lcfg_nid),
1541 if (lcfg->lcfg_command == LCFG_MARKER) {
1542 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1543 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1544 marker->cm_step, marker->cm_flags,
1545 marker->cm_tgtname, marker->cm_comment);
1547 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1548 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1549 lustre_cfg_string(lcfg, i));
1552 LCONSOLE(D_WARNING, " %s\n", outstr);
1554 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1558 OBD_FREE(outstr, 256);
1562 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1563 struct config_llog_instance *cfg)
1565 struct llog_handle *llh;
1569 LCONSOLE_INFO("Dumping config log %s\n", name);
1571 rc = llog_create(ctxt, &llh, NULL, name);
1575 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1577 GOTO(parse_out, rc);
1579 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1581 rc2 = llog_close(llh);
1585 LCONSOLE_INFO("End config log %s\n", name);
1589 EXPORT_SYMBOL(class_config_dump_llog);
1591 /** Call class_cleanup and class_detach.
1592 * "Manual" only in the sense that we're faking lcfg commands.
1594 int class_manual_cleanup(struct obd_device *obd)
1597 struct lustre_cfg *lcfg;
1598 struct lustre_cfg_bufs bufs;
1603 CERROR("empty cleanup\n");
1612 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1613 obd->obd_name, flags);
1615 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1616 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1617 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1621 rc = class_process_config(lcfg);
1623 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1627 /* the lcfg is almost the same for both ops */
1628 lcfg->lcfg_command = LCFG_DETACH;
1629 rc = class_process_config(lcfg);
1631 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1633 lustre_cfg_free(lcfg);
1636 EXPORT_SYMBOL(class_manual_cleanup);
1639 * uuid<->export lustre hash operations
1643 uuid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1645 return cfs_hash_djb2_hash(((struct obd_uuid *)key)->uuid,
1646 sizeof(((struct obd_uuid *)key)->uuid), mask);
1650 uuid_key(cfs_hlist_node_t *hnode)
1652 struct obd_export *exp;
1654 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1656 return &exp->exp_client_uuid;
1660 * NOTE: It is impossible to find an export that is in failed
1661 * state with this function
1664 uuid_keycmp(const void *key, cfs_hlist_node_t *hnode)
1666 struct obd_export *exp;
1669 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1671 return obd_uuid_equals(key, &exp->exp_client_uuid) &&
1676 uuid_export_object(cfs_hlist_node_t *hnode)
1678 return cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1682 uuid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1684 struct obd_export *exp;
1686 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1687 class_export_get(exp);
1691 uuid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1693 struct obd_export *exp;
1695 exp = cfs_hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1696 class_export_put(exp);
1699 static cfs_hash_ops_t uuid_hash_ops = {
1700 .hs_hash = uuid_hash,
1702 .hs_keycmp = uuid_keycmp,
1703 .hs_object = uuid_export_object,
1704 .hs_get = uuid_export_get,
1705 .hs_put_locked = uuid_export_put_locked,
1710 * nid<->export hash operations
1714 nid_hash(cfs_hash_t *hs, const void *key, unsigned mask)
1716 return cfs_hash_djb2_hash(key, sizeof(lnet_nid_t), mask);
1720 nid_key(cfs_hlist_node_t *hnode)
1722 struct obd_export *exp;
1724 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1726 RETURN(&exp->exp_connection->c_peer.nid);
1730 * NOTE: It is impossible to find an export that is in failed
1731 * state with this function
1734 nid_kepcmp(const void *key, cfs_hlist_node_t *hnode)
1736 struct obd_export *exp;
1739 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1741 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1746 nid_export_object(cfs_hlist_node_t *hnode)
1748 return cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1752 nid_export_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1754 struct obd_export *exp;
1756 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1757 class_export_get(exp);
1761 nid_export_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1763 struct obd_export *exp;
1765 exp = cfs_hlist_entry(hnode, struct obd_export, exp_nid_hash);
1766 class_export_put(exp);
1769 static cfs_hash_ops_t nid_hash_ops = {
1770 .hs_hash = nid_hash,
1772 .hs_keycmp = nid_kepcmp,
1773 .hs_object = nid_export_object,
1774 .hs_get = nid_export_get,
1775 .hs_put_locked = nid_export_put_locked,
1780 * nid<->nidstats hash operations
1784 nidstats_key(cfs_hlist_node_t *hnode)
1786 struct nid_stat *ns;
1788 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1794 nidstats_keycmp(const void *key, cfs_hlist_node_t *hnode)
1796 return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
1800 nidstats_object(cfs_hlist_node_t *hnode)
1802 return cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1806 nidstats_get(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1808 struct nid_stat *ns;
1810 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1815 nidstats_put_locked(cfs_hash_t *hs, cfs_hlist_node_t *hnode)
1817 struct nid_stat *ns;
1819 ns = cfs_hlist_entry(hnode, struct nid_stat, nid_hash);
1823 static cfs_hash_ops_t nid_stat_hash_ops = {
1824 .hs_hash = nid_hash,
1825 .hs_key = nidstats_key,
1826 .hs_keycmp = nidstats_keycmp,
1827 .hs_object = nidstats_object,
1828 .hs_get = nidstats_get,
1829 .hs_put_locked = nidstats_put_locked,