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 2008 Sun Microsystems, Inc. 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>
54 #include <class_hash.h>
56 static lustre_hash_ops_t uuid_hash_ops;
57 static lustre_hash_ops_t nid_hash_ops;
58 static lustre_hash_ops_t nid_stat_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);
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);
145 /* returns 0 if this is the first key in the buffer, else 1.
146 valp points to first char after key. */
147 int class_match_param(char *buf, char *key, char **valp)
152 if (memcmp(buf, key, strlen(key)) != 0)
156 *valp = buf + strlen(key);
164 endh is set to next separator */
165 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
171 while (*buf == ',' || *buf == ':')
173 if (*buf == ' ' || *buf == '/' || *buf == '\0')
176 /* nid separators or end of nids */
177 endp = strpbrk(buf, ",: /");
179 endp = buf + strlen(buf);
183 *nid = libcfs_str2nid(buf);
184 if (*nid == LNET_NID_ANY) {
185 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
193 CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
197 EXPORT_SYMBOL(class_find_param);
198 EXPORT_SYMBOL(class_get_next_param);
199 EXPORT_SYMBOL(class_match_param);
200 EXPORT_SYMBOL(class_parse_nid);
202 /********************** class fns **********************/
205 * Create a new device and set the type, name and uuid. If successful, the new
206 * device can be accessed by either name or uuid.
208 int class_attach(struct lustre_cfg *lcfg)
210 struct obd_device *obd = NULL;
211 char *typename, *name, *uuid;
215 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
216 CERROR("No type passed!\n");
219 typename = lustre_cfg_string(lcfg, 1);
221 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
222 CERROR("No name passed!\n");
225 name = lustre_cfg_string(lcfg, 0);
227 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
228 CERROR("No UUID passed!\n");
231 uuid = lustre_cfg_string(lcfg, 2);
233 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
234 MKSTR(typename), MKSTR(name), MKSTR(uuid));
236 obd = class_newdev(typename, name);
238 /* Already exists or out of obds */
241 CERROR("Cannot create device %s of type %s : %d\n",
245 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
247 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
248 "obd %p obd_magic %08X != %08X\n",
249 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
250 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
251 obd, obd->obd_name, name);
253 rwlock_init(&obd->obd_pool_lock);
254 obd->obd_pool_limit = 0;
255 obd->obd_pool_slv = 0;
257 CFS_INIT_LIST_HEAD(&obd->obd_exports);
258 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
259 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
260 spin_lock_init(&obd->obd_nid_lock);
261 spin_lock_init(&obd->obd_dev_lock);
262 sema_init(&obd->obd_dev_sem, 1);
263 spin_lock_init(&obd->obd_osfs_lock);
264 /* obd->obd_osfs_age must be set to a value in the distant
265 * past to guarantee a fresh statfs is fetched on mount. */
266 obd->obd_osfs_age = cfs_time_shift_64(-1000);
268 /* XXX belongs in setup not attach */
270 cfs_init_timer(&obd->obd_recovery_timer);
271 spin_lock_init(&obd->obd_processing_task_lock);
272 cfs_waitq_init(&obd->obd_next_transno_waitq);
273 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
274 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
275 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
276 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
278 llog_group_init(&obd->obd_olg, FILTER_GROUP_LLOG);
280 spin_lock_init(&obd->obd_uncommitted_replies_lock);
281 CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
284 if (len >= sizeof(obd->obd_uuid)) {
285 CERROR("uuid must be < %d bytes long\n",
286 (int)sizeof(obd->obd_uuid));
287 GOTO(out, rc = -EINVAL);
289 memcpy(obd->obd_uuid.uuid, uuid, len);
292 if (OBP(obd, attach)) {
293 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
295 GOTO(out, rc = -EINVAL);
298 /* Detach drops this */
299 spin_lock(&obd->obd_dev_lock);
300 atomic_set(&obd->obd_refcount, 1);
301 spin_unlock(&obd->obd_dev_lock);
302 lu_ref_init(&obd->obd_reference);
303 lu_ref_add(&obd->obd_reference, "attach", obd);
305 obd->obd_attached = 1;
306 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
307 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
311 class_release_dev(obd);
316 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
319 struct obd_export *exp;
322 LASSERT(obd != NULL);
323 LASSERTF(obd == class_num2obd(obd->obd_minor),
324 "obd %p != obd_devs[%d] %p\n",
325 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
326 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
327 "obd %p obd_magic %08x != %08x\n",
328 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
330 /* have we attached a type to this device? */
331 if (!obd->obd_attached) {
332 CERROR("Device %d not attached\n", obd->obd_minor);
336 if (obd->obd_set_up) {
337 CERROR("Device %d already setup (type %s)\n",
338 obd->obd_minor, obd->obd_type->typ_name);
342 /* is someone else setting us up right now? (attach inits spinlock) */
343 spin_lock(&obd->obd_dev_lock);
344 if (obd->obd_starting) {
345 spin_unlock(&obd->obd_dev_lock);
346 CERROR("Device %d setup in progress (type %s)\n",
347 obd->obd_minor, obd->obd_type->typ_name);
350 /* just leave this on forever. I can't use obd_set_up here because
351 other fns check that status, and we're not actually set up yet. */
352 obd->obd_starting = 1;
353 obd->obd_uuid_hash = NULL;
354 obd->obd_nid_hash = NULL;
355 obd->obd_nid_stats_hash = NULL;
356 spin_unlock(&obd->obd_dev_lock);
358 /* create an uuid-export lustre hash */
359 obd->obd_uuid_hash = lustre_hash_init("UUID_HASH", 7, 7,
361 if (!obd->obd_uuid_hash)
362 GOTO(err_hash, err = -ENOMEM);
364 /* create a nid-export lustre hash */
365 obd->obd_nid_hash = lustre_hash_init("NID_HASH", 7, 7,
367 if (!obd->obd_nid_hash)
368 GOTO(err_hash, err = -ENOMEM);
370 /* create a nid-stats lustre hash */
371 obd->obd_nid_stats_hash = lustre_hash_init("NID_STATS", 7, 7,
372 &nid_stat_hash_ops, 0);
373 if (!obd->obd_nid_stats_hash)
374 GOTO(err_hash, err = -ENOMEM);
376 exp = class_new_export(obd, &obd->obd_uuid);
378 GOTO(err_hash, err = PTR_ERR(exp));
380 obd->obd_self_export = exp;
381 list_del_init(&exp->exp_obd_chain_timed);
382 class_export_put(exp);
384 err = obd_setup(obd, lcfg);
390 spin_lock(&obd->obd_dev_lock);
391 /* cleanup drops this */
392 class_incref(obd, "setup", obd);
393 spin_unlock(&obd->obd_dev_lock);
395 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
396 obd->obd_name, obd->obd_uuid.uuid);
400 class_unlink_export(obd->obd_self_export);
401 obd->obd_self_export = NULL;
403 if (obd->obd_uuid_hash) {
404 lustre_hash_exit(obd->obd_uuid_hash);
405 obd->obd_uuid_hash = NULL;
407 if (obd->obd_nid_hash) {
408 lustre_hash_exit(obd->obd_nid_hash);
409 obd->obd_nid_hash = NULL;
411 if (obd->obd_nid_stats_hash) {
412 lustre_hash_exit(obd->obd_nid_stats_hash);
413 obd->obd_nid_stats_hash = NULL;
415 obd->obd_starting = 0;
416 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
420 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
424 if (obd->obd_set_up) {
425 CERROR("OBD device %d still set up\n", obd->obd_minor);
429 spin_lock(&obd->obd_dev_lock);
430 if (!obd->obd_attached) {
431 spin_unlock(&obd->obd_dev_lock);
432 CERROR("OBD device %d not attached\n", obd->obd_minor);
435 obd->obd_attached = 0;
436 spin_unlock(&obd->obd_dev_lock);
438 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
439 obd->obd_name, obd->obd_uuid.uuid);
441 class_decref(obd, "attach", obd);
443 /* not strictly necessary, but cleans up eagerly */
444 obd_zombie_impexp_cull();
449 static void dump_exports(struct obd_device *obd)
451 struct obd_export *exp;
453 spin_lock(&obd->obd_dev_lock);
454 list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
455 struct ptlrpc_reply_state *rs;
456 struct ptlrpc_reply_state *first_reply = NULL;
459 spin_lock(&exp->exp_lock);
460 list_for_each_entry (rs, &exp->exp_outstanding_replies,
466 spin_unlock(&exp->exp_lock);
468 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
469 obd->obd_name, exp, exp->exp_client_uuid.uuid,
470 obd_export_nid2str(exp),
471 atomic_read(&exp->exp_refcount),
472 exp->exp_failed, nreplies, first_reply,
473 nreplies > 3 ? "..." : "");
475 spin_unlock(&obd->obd_dev_lock);
478 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
484 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
486 if (!obd->obd_set_up) {
487 CERROR("Device %d not setup\n", obd->obd_minor);
491 spin_lock(&obd->obd_dev_lock);
492 if (obd->obd_stopping) {
493 spin_unlock(&obd->obd_dev_lock);
494 CERROR("OBD %d already stopping\n", obd->obd_minor);
497 /* Leave this on forever */
498 obd->obd_stopping = 1;
499 spin_unlock(&obd->obd_dev_lock);
501 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
502 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
508 LCONSOLE_WARN("Failing over %s\n",
511 obd->obd_no_transno = 1;
512 obd->obd_no_recov = 1;
513 if (OBP(obd, iocontrol)) {
514 obd_iocontrol(OBD_IOC_SYNC,
515 obd->obd_self_export,
517 /* Set the obd readonly if we can */
518 obd_iocontrol(OBD_IOC_SET_READONLY,
519 obd->obd_self_export,
524 CERROR("unrecognised flag '%c'\n",
529 /* The three references that should be remaining are the
530 * obd_self_export and the attach and setup references. */
531 if (atomic_read(&obd->obd_refcount) > 3) {
532 #if 0 /* We should never fail to cleanup with mountconf */
533 if (!(obd->obd_fail || obd->obd_force)) {
534 CERROR("OBD %s is still busy with %d references\n"
535 "You should stop active file system users,"
536 " or use the --force option to cleanup.\n",
537 obd->obd_name, atomic_read(&obd->obd_refcount));
539 /* Allow a failed cleanup to try again. */
540 obd->obd_stopping = 0;
543 /* refcounf - 3 might be the number of real exports
544 (excluding self export). But class_incref is called
545 by other things as well, so don't count on it. */
546 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
547 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
549 class_disconnect_exports(obd);
551 LASSERT(obd->obd_self_export);
553 /* destroy an uuid-export hash body */
554 lustre_hash_exit(obd->obd_uuid_hash);
556 /* destroy a nid-export hash body */
557 lustre_hash_exit(obd->obd_nid_hash);
559 /* destroy a nid-stats hash body */
560 lustre_hash_exit(obd->obd_nid_stats_hash);
562 /* Precleanup, we must make sure all exports get destroyed. */
563 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
565 CERROR("Precleanup %s returned %d\n",
567 class_decref(obd, "setup", obd);
572 struct obd_device *class_incref(struct obd_device *obd,
573 const char *scope, const void *source)
575 lu_ref_add_atomic(&obd->obd_reference, scope, source);
576 atomic_inc(&obd->obd_refcount);
577 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
578 atomic_read(&obd->obd_refcount));
583 void class_decref(struct obd_device *obd, const char *scope, const void *source)
588 spin_lock(&obd->obd_dev_lock);
589 atomic_dec(&obd->obd_refcount);
590 refs = atomic_read(&obd->obd_refcount);
591 spin_unlock(&obd->obd_dev_lock);
592 lu_ref_del(&obd->obd_reference, scope, source);
594 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
596 if ((refs == 1) && obd->obd_stopping) {
597 /* All exports have been destroyed; there should
598 be no more in-progress ops by this point.*/
600 spin_lock(&obd->obd_self_export->exp_lock);
601 obd->obd_self_export->exp_flags |=
602 (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
603 (obd->obd_force ? OBD_OPT_FORCE : 0);
604 spin_unlock(&obd->obd_self_export->exp_lock);
606 /* note that we'll recurse into class_decref again */
607 class_unlink_export(obd->obd_self_export);
612 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
613 obd->obd_name, obd->obd_uuid.uuid);
614 LASSERT(!obd->obd_attached);
615 if (obd->obd_stopping) {
616 /* If we're not stopping, we were never set up */
617 err = obd_cleanup(obd);
619 CERROR("Cleanup %s returned %d\n",
622 if (OBP(obd, detach)) {
623 err = OBP(obd,detach)(obd);
625 CERROR("Detach returned %d\n", err);
627 class_release_dev(obd);
631 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
633 struct obd_import *imp;
634 struct obd_uuid uuid;
638 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
639 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
640 CERROR("invalid conn_uuid\n");
643 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
644 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
645 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
646 CERROR("can't add connection on non-client dev\n");
650 imp = obd->u.cli.cl_import;
652 CERROR("try to add conn on immature client dev\n");
656 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
657 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
662 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
664 struct obd_import *imp;
665 struct obd_uuid uuid;
669 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
670 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
671 CERROR("invalid conn_uuid\n");
674 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
675 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
676 CERROR("can't del connection on non-client dev\n");
680 imp = obd->u.cli.cl_import;
682 CERROR("try to del conn on immature client dev\n");
686 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
687 rc = obd_del_conn(imp, &uuid);
692 CFS_LIST_HEAD(lustre_profile_list);
694 struct lustre_profile *class_get_profile(const char * prof)
696 struct lustre_profile *lprof;
699 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
700 if (!strcmp(lprof->lp_profile, prof)) {
707 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
708 int mdclen, char *mdc)
710 struct lustre_profile *lprof;
714 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
716 OBD_ALLOC(lprof, sizeof(*lprof));
719 CFS_INIT_LIST_HEAD(&lprof->lp_list);
721 LASSERT(proflen == (strlen(prof) + 1));
722 OBD_ALLOC(lprof->lp_profile, proflen);
723 if (lprof->lp_profile == NULL)
724 GOTO(out, err = -ENOMEM);
725 memcpy(lprof->lp_profile, prof, proflen);
727 LASSERT(osclen == (strlen(osc) + 1));
728 OBD_ALLOC(lprof->lp_dt, osclen);
729 if (lprof->lp_dt == NULL)
730 GOTO(out, err = -ENOMEM);
731 memcpy(lprof->lp_dt, osc, osclen);
734 LASSERT(mdclen == (strlen(mdc) + 1));
735 OBD_ALLOC(lprof->lp_md, mdclen);
736 if (lprof->lp_md == NULL)
737 GOTO(out, err = -ENOMEM);
738 memcpy(lprof->lp_md, mdc, mdclen);
741 list_add(&lprof->lp_list, &lustre_profile_list);
746 OBD_FREE(lprof->lp_md, mdclen);
748 OBD_FREE(lprof->lp_dt, osclen);
749 if (lprof->lp_profile)
750 OBD_FREE(lprof->lp_profile, proflen);
751 OBD_FREE(lprof, sizeof(*lprof));
755 void class_del_profile(const char *prof)
757 struct lustre_profile *lprof;
760 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
762 lprof = class_get_profile(prof);
764 list_del(&lprof->lp_list);
765 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
766 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
768 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
769 OBD_FREE(lprof, sizeof *lprof);
775 void class_del_profiles(void)
777 struct lustre_profile *lprof, *n;
780 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
781 list_del(&lprof->lp_list);
782 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
783 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
785 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
786 OBD_FREE(lprof, sizeof *lprof);
791 /* We can't call ll_process_config directly because it lives in a module that
792 must be loaded after this one. */
793 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
795 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
797 client_process_config = cpc;
799 EXPORT_SYMBOL(lustre_register_client_process_config);
801 int class_process_config(struct lustre_cfg *lcfg)
803 struct obd_device *obd;
806 LASSERT(lcfg && !IS_ERR(lcfg));
807 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
809 /* Commands that don't need a device */
810 switch(lcfg->lcfg_command) {
812 err = class_attach(lcfg);
815 case LCFG_ADD_UUID: {
816 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
817 " (%s)\n", lustre_cfg_string(lcfg, 1),
818 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
820 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
823 case LCFG_DEL_UUID: {
824 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
825 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
826 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
828 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
831 case LCFG_MOUNTOPT: {
832 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
833 lustre_cfg_string(lcfg, 1),
834 lustre_cfg_string(lcfg, 2),
835 lustre_cfg_string(lcfg, 3));
836 /* set these mount options somewhere, so ll_fill_super
838 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
839 lustre_cfg_string(lcfg, 1),
840 LUSTRE_CFG_BUFLEN(lcfg, 2),
841 lustre_cfg_string(lcfg, 2),
842 LUSTRE_CFG_BUFLEN(lcfg, 3),
843 lustre_cfg_string(lcfg, 3));
846 case LCFG_DEL_MOUNTOPT: {
847 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
848 lustre_cfg_string(lcfg, 1));
849 class_del_profile(lustre_cfg_string(lcfg, 1));
852 case LCFG_SET_TIMEOUT: {
853 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
854 obd_timeout, lcfg->lcfg_num);
855 obd_timeout = max(lcfg->lcfg_num, 1U);
858 case LCFG_SET_UPCALL: {
859 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
860 /* COMPAT_146 Don't fail on old configs */
864 struct cfg_marker *marker;
865 marker = lustre_cfg_buf(lcfg, 1);
866 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
867 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
871 /* llite has no obd */
872 if ((class_match_param(lustre_cfg_string(lcfg, 1),
873 PARAM_LLITE, 0) == 0) &&
874 client_process_config) {
875 err = (*client_process_config)(lcfg);
883 /* Commands that require a device */
884 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
886 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
887 CERROR("this lcfg command requires a device name\n");
889 CERROR("no device for: %s\n",
890 lustre_cfg_string(lcfg, 0));
892 GOTO(out, err = -EINVAL);
895 switch(lcfg->lcfg_command) {
897 err = class_setup(obd, lcfg);
901 err = class_detach(obd, lcfg);
905 err = class_cleanup(obd, lcfg);
908 case LCFG_ADD_CONN: {
909 err = class_add_conn(obd, lcfg);
912 case LCFG_DEL_CONN: {
913 err = class_del_conn(obd, lcfg);
916 case LCFG_POOL_NEW: {
917 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
921 case LCFG_POOL_ADD: {
922 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
923 lustre_cfg_string(lcfg, 3));
927 case LCFG_POOL_REM: {
928 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
929 lustre_cfg_string(lcfg, 3));
933 case LCFG_POOL_DEL: {
934 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
939 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
945 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
946 CWARN("Ignoring error %d on optional command %#x\n", err,
953 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
954 struct lustre_cfg *lcfg, void *data)
957 struct lprocfs_vars *var;
959 int i, keylen, vallen;
960 int matched = 0, j = 0;
965 if (lcfg->lcfg_command != LCFG_PARAM) {
966 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
970 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
971 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
972 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
973 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
974 key = lustre_cfg_buf(lcfg, i);
975 /* Strip off prefix */
976 class_match_param(key, prefix, &key);
977 sval = strchr(key, '=');
978 if (!sval || (*(sval + 1) == 0)) {
979 CERROR("Can't parse param %s (missing '=')\n", key);
980 /* rc = -EINVAL; continue parsing other params */
985 vallen = strlen(sval);
988 /* Search proc entries */
989 while (lvars[j].name) {
991 if (class_match_param(key, (char *)var->name, 0) == 0 &&
992 keylen == strlen(var->name)) {
995 if (var->write_fptr) {
999 rc = (var->write_fptr)(NULL, sval,
1004 CERROR("writing proc entry %s err %d\n",
1011 /* If the prefix doesn't match, return error so we
1012 can pass it down the stack */
1013 if (strnchr(key, keylen, '.'))
1015 CERROR("%s: unknown param %s\n",
1016 (char *)lustre_cfg_string(lcfg, 0), key);
1017 /* rc = -EINVAL; continue parsing other params */
1020 LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
1021 lustre_cfg_string(lcfg, 0),
1022 (int)strlen(prefix) - 1, prefix,
1023 (int)(sval - key - 1), key, sval);
1033 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1034 /* Don't throw config error */
1039 int class_config_dump_handler(struct llog_handle * handle,
1040 struct llog_rec_hdr *rec, void *data);
1043 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1045 #define lustre_check_exclusion(a,b) 0
1048 static int class_config_llog_handler(struct llog_handle * handle,
1049 struct llog_rec_hdr *rec, void *data)
1051 struct config_llog_instance *clli = data;
1052 int cfg_len = rec->lrh_len;
1053 char *cfg_buf = (char*) (rec + 1);
1057 //class_config_dump_handler(handle, rec, data);
1059 switch (rec->lrh_type) {
1061 struct lustre_cfg *lcfg, *lcfg_new;
1062 struct lustre_cfg_bufs bufs;
1063 char *inst_name = NULL;
1065 int inst = 0, swab = 0;
1067 lcfg = (struct lustre_cfg *)cfg_buf;
1068 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1069 lustre_swab_lustre_cfg(lcfg);
1073 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1077 /* Figure out config state info */
1078 if (lcfg->lcfg_command == LCFG_MARKER) {
1079 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1080 lustre_swab_cfg_marker(marker, swab,
1081 LUSTRE_CFG_BUFLEN(lcfg, 1));
1082 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1083 clli->cfg_flags, marker->cm_flags);
1084 if (marker->cm_flags & CM_START) {
1085 /* all previous flags off */
1086 clli->cfg_flags = CFG_F_MARKER;
1087 if (marker->cm_flags & CM_SKIP) {
1088 clli->cfg_flags |= CFG_F_SKIP;
1089 CDEBUG(D_CONFIG, "SKIP #%d\n",
1091 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1093 lustre_check_exclusion(clli->cfg_sb,
1094 marker->cm_tgtname))) {
1095 clli->cfg_flags |= CFG_F_EXCLUDE;
1096 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1099 } else if (marker->cm_flags & CM_END) {
1100 clli->cfg_flags = 0;
1103 /* A config command without a start marker before it is
1104 illegal (post 146) */
1105 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1106 !(clli->cfg_flags & CFG_F_MARKER) &&
1107 (lcfg->lcfg_command != LCFG_MARKER)) {
1108 CWARN("Config not inside markers, ignoring! "
1109 "(inst: %s, uuid: %s, flags: %#x)\n",
1110 clli->cfg_instance ? clli->cfg_instance : "<null>",
1111 clli->cfg_uuid.uuid, clli->cfg_flags);
1112 clli->cfg_flags |= CFG_F_SKIP;
1114 if (clli->cfg_flags & CFG_F_SKIP) {
1115 CDEBUG(D_CONFIG, "skipping %#x\n",
1118 /* No processing! */
1123 * For interoperability between 1.8 and 2.0,
1124 * rename "mds" obd device type to "mdt".
1127 char *typename = lustre_cfg_string(lcfg, 1);
1128 char *index = lustre_cfg_string(lcfg, 2);
1130 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1131 strcmp(typename, "mds") == 0)) {
1132 CWARN("For 1.8 interoperability, rename obd "
1133 "type from mds to mdt\n");
1136 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1137 strcmp(index, "type") == 0)) {
1138 CDEBUG(D_INFO, "For 1.8 interoperability, "
1139 "set this index to '0'\n");
1145 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1146 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1147 /* Add inactive instead */
1148 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1150 lustre_cfg_bufs_init(&bufs, lcfg);
1152 if (clli && clli->cfg_instance &&
1153 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1155 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1156 strlen(clli->cfg_instance) + 1;
1157 OBD_ALLOC(inst_name, inst_len);
1158 if (inst_name == NULL)
1159 GOTO(out, rc = -ENOMEM);
1160 sprintf(inst_name, "%s-%s",
1161 lustre_cfg_string(lcfg, 0),
1162 clli->cfg_instance);
1163 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1164 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1165 lcfg->lcfg_command, inst_name);
1168 /* we override the llog's uuid for clients, to insure they
1170 if (clli && clli->cfg_instance &&
1171 lcfg->lcfg_command == LCFG_ATTACH) {
1172 lustre_cfg_bufs_set_string(&bufs, 2,
1173 clli->cfg_uuid.uuid);
1176 * sptlrpc config record, we expect 2 data segments:
1177 * [0]: fs_name/target_name,
1179 * moving them to index [1] and [2], and insert MGC's
1180 * obdname at index [0].
1182 if (clli && clli->cfg_instance == NULL &&
1183 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1184 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1185 bufs.lcfg_buflen[1]);
1186 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1187 bufs.lcfg_buflen[0]);
1188 lustre_cfg_bufs_set_string(&bufs, 0,
1192 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1194 lcfg_new->lcfg_num = lcfg->lcfg_num;
1195 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1197 /* XXX Hack to try to remain binary compatible with
1198 * pre-newconfig logs */
1199 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1200 (lcfg->lcfg_nid >> 32) == 0) {
1201 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1203 lcfg_new->lcfg_nid =
1204 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1205 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1206 lcfg->lcfg_nal, addr,
1207 libcfs_nid2str(lcfg_new->lcfg_nid));
1209 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1212 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1214 rc = class_process_config(lcfg_new);
1215 lustre_cfg_free(lcfg_new);
1218 OBD_FREE(inst_name, inst_len);
1222 CERROR("Unknown llog record type %#x encountered\n",
1228 CERROR("Err %d on cfg command:\n", rc);
1229 class_config_dump_handler(handle, rec, data);
1234 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1235 struct config_llog_instance *cfg)
1237 struct llog_process_cat_data cd = {0, 0};
1238 struct llog_handle *llh;
1242 CDEBUG(D_INFO, "looking up llog %s\n", name);
1243 rc = llog_create(ctxt, &llh, NULL, name);
1247 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1249 GOTO(parse_out, rc);
1251 /* continue processing from where we last stopped to end-of-log */
1253 cd.lpcd_first_idx = cfg->cfg_last_idx;
1254 cd.lpcd_last_idx = 0;
1256 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1258 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1259 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1262 cfg->cfg_last_idx = cd.lpcd_last_idx;
1265 rc2 = llog_close(llh);
1272 int class_config_dump_handler(struct llog_handle * handle,
1273 struct llog_rec_hdr *rec, void *data)
1275 int cfg_len = rec->lrh_len;
1276 char *cfg_buf = (char*) (rec + 1);
1277 char *outstr, *ptr, *end;
1281 OBD_ALLOC(outstr, 256);
1287 if (rec->lrh_type == OBD_CFG_REC) {
1288 struct lustre_cfg *lcfg;
1291 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1294 lcfg = (struct lustre_cfg *)cfg_buf;
1296 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1297 lcfg->lcfg_command);
1298 if (lcfg->lcfg_flags) {
1299 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1302 if (lcfg->lcfg_num) {
1303 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1306 if (lcfg->lcfg_nid) {
1307 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1308 libcfs_nid2str(lcfg->lcfg_nid),
1311 if (lcfg->lcfg_command == LCFG_MARKER) {
1312 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1313 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1314 marker->cm_step, marker->cm_flags,
1315 marker->cm_tgtname, marker->cm_comment);
1317 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1318 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1319 lustre_cfg_string(lcfg, i));
1322 LCONSOLE(D_WARNING, " %s\n", outstr);
1324 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1328 OBD_FREE(outstr, 256);
1332 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1333 struct config_llog_instance *cfg)
1335 struct llog_handle *llh;
1339 LCONSOLE_INFO("Dumping config log %s\n", name);
1341 rc = llog_create(ctxt, &llh, NULL, name);
1345 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1347 GOTO(parse_out, rc);
1349 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1351 rc2 = llog_close(llh);
1355 LCONSOLE_INFO("End config log %s\n", name);
1360 /* Cleanup and detach */
1361 int class_manual_cleanup(struct obd_device *obd)
1363 struct lustre_cfg *lcfg;
1364 struct lustre_cfg_bufs bufs;
1370 CERROR("empty cleanup\n");
1379 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1380 obd->obd_name, flags);
1382 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1383 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1384 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1386 rc = class_process_config(lcfg);
1388 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1392 /* the lcfg is almost the same for both ops */
1393 lcfg->lcfg_command = LCFG_DETACH;
1394 rc = class_process_config(lcfg);
1396 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1398 lustre_cfg_free(lcfg);
1403 * uuid<->export lustre hash operations
1407 uuid_hash(lustre_hash_t *lh, void *key, unsigned mask)
1409 return lh_djb2_hash(((struct obd_uuid *)key)->uuid,
1410 sizeof(((struct obd_uuid *)key)->uuid), mask);
1414 uuid_key(struct hlist_node *hnode)
1416 struct obd_export *exp;
1418 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1420 RETURN(&exp->exp_client_uuid);
1424 * NOTE: It is impossible to find an export that is in failed
1425 * state with this function
1428 uuid_compare(void *key, struct hlist_node *hnode)
1430 struct obd_export *exp;
1433 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1435 RETURN(obd_uuid_equals((struct obd_uuid *)key,&exp->exp_client_uuid) &&
1440 uuid_export_get(struct hlist_node *hnode)
1442 struct obd_export *exp;
1444 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1445 class_export_get(exp);
1451 uuid_export_put(struct hlist_node *hnode)
1453 struct obd_export *exp;
1455 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1456 class_export_put(exp);
1461 static lustre_hash_ops_t uuid_hash_ops = {
1462 .lh_hash = uuid_hash,
1464 .lh_compare = uuid_compare,
1465 .lh_get = uuid_export_get,
1466 .lh_put = uuid_export_put,
1471 * nid<->export hash operations
1475 nid_hash(lustre_hash_t *lh, void *key, unsigned mask)
1477 return lh_djb2_hash(key, sizeof(lnet_nid_t), mask);
1481 nid_key(struct hlist_node *hnode)
1483 struct obd_export *exp;
1485 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1487 RETURN(&exp->exp_connection->c_peer.nid);
1491 * NOTE: It is impossible to find an export that is in failed
1492 * state with this function
1495 nid_compare(void *key, struct hlist_node *hnode)
1497 struct obd_export *exp;
1500 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1502 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1507 nid_export_get(struct hlist_node *hnode)
1509 struct obd_export *exp;
1511 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1512 class_export_get(exp);
1518 nid_export_put(struct hlist_node *hnode)
1520 struct obd_export *exp;
1522 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1523 class_export_put(exp);
1528 static lustre_hash_ops_t nid_hash_ops = {
1529 .lh_hash = nid_hash,
1531 .lh_compare = nid_compare,
1532 .lh_get = nid_export_get,
1533 .lh_put = nid_export_put,
1538 * nid<->nidstats hash operations
1542 nidstats_key(struct hlist_node *hnode)
1544 struct nid_stat *ns;
1546 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1552 nidstats_compare(void *key, struct hlist_node *hnode)
1554 RETURN(*(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key);
1558 nidstats_get(struct hlist_node *hnode)
1560 struct nid_stat *ns;
1562 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1563 ns->nid_exp_ref_count++;
1569 nidstats_put(struct hlist_node *hnode)
1571 struct nid_stat *ns;
1573 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1574 ns->nid_exp_ref_count--;
1579 static lustre_hash_ops_t nid_stat_hash_ops = {
1580 .lh_hash = nid_hash,
1581 .lh_key = nidstats_key,
1582 .lh_compare = nidstats_compare,
1583 .lh_get = nidstats_get,
1584 .lh_put = nidstats_put,