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,
251 "%p obd_name %s != %s\n", 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_unlinked_exports);
259 CFS_INIT_LIST_HEAD(&obd->obd_delayed_exports);
260 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
261 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
262 spin_lock_init(&obd->obd_nid_lock);
263 spin_lock_init(&obd->obd_dev_lock);
264 sema_init(&obd->obd_dev_sem, 1);
265 spin_lock_init(&obd->obd_osfs_lock);
266 /* obd->obd_osfs_age must be set to a value in the distant
267 * past to guarantee a fresh statfs is fetched on mount. */
268 obd->obd_osfs_age = cfs_time_shift_64(-1000);
270 /* XXX belongs in setup not attach */
272 cfs_init_timer(&obd->obd_recovery_timer);
273 spin_lock_init(&obd->obd_processing_task_lock);
274 cfs_waitq_init(&obd->obd_next_transno_waitq);
275 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
276 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
277 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
278 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
280 llog_group_init(&obd->obd_olg, FILTER_GROUP_LLOG);
283 if (len >= sizeof(obd->obd_uuid)) {
284 CERROR("uuid must be < %d bytes long\n",
285 (int)sizeof(obd->obd_uuid));
286 GOTO(out, rc = -EINVAL);
288 memcpy(obd->obd_uuid.uuid, uuid, len);
291 if (OBP(obd, attach)) {
292 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
294 GOTO(out, rc = -EINVAL);
297 /* Detach drops this */
298 spin_lock(&obd->obd_dev_lock);
299 atomic_set(&obd->obd_refcount, 1);
300 spin_unlock(&obd->obd_dev_lock);
301 lu_ref_init(&obd->obd_reference);
302 lu_ref_add(&obd->obd_reference, "attach", obd);
304 obd->obd_attached = 1;
305 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
306 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
310 class_release_dev(obd);
315 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
318 struct obd_export *exp;
321 LASSERT(obd != NULL);
322 LASSERTF(obd == class_num2obd(obd->obd_minor),
323 "obd %p != obd_devs[%d] %p\n",
324 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
325 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
326 "obd %p obd_magic %08x != %08x\n",
327 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
329 /* have we attached a type to this device? */
330 if (!obd->obd_attached) {
331 CERROR("Device %d not attached\n", obd->obd_minor);
335 if (obd->obd_set_up) {
336 CERROR("Device %d already setup (type %s)\n",
337 obd->obd_minor, obd->obd_type->typ_name);
341 /* is someone else setting us up right now? (attach inits spinlock) */
342 spin_lock(&obd->obd_dev_lock);
343 if (obd->obd_starting) {
344 spin_unlock(&obd->obd_dev_lock);
345 CERROR("Device %d setup in progress (type %s)\n",
346 obd->obd_minor, obd->obd_type->typ_name);
349 /* just leave this on forever. I can't use obd_set_up here because
350 other fns check that status, and we're not actually set up yet. */
351 obd->obd_starting = 1;
352 obd->obd_uuid_hash = NULL;
353 obd->obd_nid_hash = NULL;
354 obd->obd_nid_stats_hash = NULL;
355 spin_unlock(&obd->obd_dev_lock);
357 /* create an uuid-export lustre hash */
358 obd->obd_uuid_hash = lustre_hash_init("UUID_HASH",
362 if (!obd->obd_uuid_hash)
363 GOTO(err_hash, err = -ENOMEM);
365 /* create a nid-export lustre hash */
366 obd->obd_nid_hash = lustre_hash_init("NID_HASH",
370 if (!obd->obd_nid_hash)
371 GOTO(err_hash, err = -ENOMEM);
373 /* create a nid-stats lustre hash */
374 obd->obd_nid_stats_hash = lustre_hash_init("NID_STATS",
375 HASH_NID_STATS_CUR_BITS,
376 HASH_NID_STATS_MAX_BITS,
377 &nid_stat_hash_ops, 0);
378 if (!obd->obd_nid_stats_hash)
379 GOTO(err_hash, err = -ENOMEM);
381 exp = class_new_export(obd, &obd->obd_uuid);
383 GOTO(err_hash, err = PTR_ERR(exp));
385 obd->obd_self_export = exp;
386 list_del_init(&exp->exp_obd_chain_timed);
387 class_export_put(exp);
389 err = obd_setup(obd, lcfg);
395 spin_lock(&obd->obd_dev_lock);
396 /* cleanup drops this */
397 class_incref(obd, "setup", obd);
398 spin_unlock(&obd->obd_dev_lock);
400 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
401 obd->obd_name, obd->obd_uuid.uuid);
405 if (obd->obd_self_export) {
406 class_unlink_export(obd->obd_self_export);
407 obd->obd_self_export = NULL;
410 if (obd->obd_uuid_hash) {
411 lustre_hash_exit(obd->obd_uuid_hash);
412 obd->obd_uuid_hash = NULL;
414 if (obd->obd_nid_hash) {
415 lustre_hash_exit(obd->obd_nid_hash);
416 obd->obd_nid_hash = NULL;
418 if (obd->obd_nid_stats_hash) {
419 lustre_hash_exit(obd->obd_nid_stats_hash);
420 obd->obd_nid_stats_hash = NULL;
422 obd->obd_starting = 0;
423 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
427 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
431 if (obd->obd_set_up) {
432 CERROR("OBD device %d still set up\n", obd->obd_minor);
436 spin_lock(&obd->obd_dev_lock);
437 if (!obd->obd_attached) {
438 spin_unlock(&obd->obd_dev_lock);
439 CERROR("OBD device %d not attached\n", obd->obd_minor);
442 obd->obd_attached = 0;
443 spin_unlock(&obd->obd_dev_lock);
445 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
446 obd->obd_name, obd->obd_uuid.uuid);
448 class_decref(obd, "attach", obd);
450 /* not strictly necessary, but cleans up eagerly */
451 obd_zombie_impexp_cull();
456 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
462 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
464 if (!obd->obd_set_up) {
465 CERROR("Device %d not setup\n", obd->obd_minor);
469 spin_lock(&obd->obd_dev_lock);
470 if (obd->obd_stopping) {
471 spin_unlock(&obd->obd_dev_lock);
472 CERROR("OBD %d already stopping\n", obd->obd_minor);
475 /* Leave this on forever */
476 obd->obd_stopping = 1;
477 spin_unlock(&obd->obd_dev_lock);
479 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
480 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
486 LCONSOLE_WARN("Failing over %s\n",
489 obd->obd_no_transno = 1;
490 obd->obd_no_recov = 1;
491 if (OBP(obd, iocontrol)) {
492 obd_iocontrol(OBD_IOC_SYNC,
493 obd->obd_self_export,
495 /* Set the obd readonly if we can */
496 obd_iocontrol(OBD_IOC_SET_READONLY,
497 obd->obd_self_export,
502 CERROR("Unrecognised flag '%c'\n", *flag);
506 LASSERT(obd->obd_self_export);
508 /* The three references that should be remaining are the
509 * obd_self_export and the attach and setup references. */
510 if (atomic_read(&obd->obd_refcount) > 3) {
511 /* refcounf - 3 might be the number of real exports
512 (excluding self export). But class_incref is called
513 by other things as well, so don't count on it. */
514 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
515 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
516 dump_exports(obd, 0);
517 class_disconnect_exports(obd);
520 /* destroy an uuid-export hash body */
521 if (obd->obd_uuid_hash) {
522 lustre_hash_exit(obd->obd_uuid_hash);
523 obd->obd_uuid_hash = NULL;
526 /* destroy a nid-export hash body */
527 if (obd->obd_nid_hash) {
528 lustre_hash_exit(obd->obd_nid_hash);
529 obd->obd_nid_hash = NULL;
532 /* destroy a nid-stats hash body */
533 if (obd->obd_nid_stats_hash) {
534 lustre_hash_exit(obd->obd_nid_stats_hash);
535 obd->obd_nid_stats_hash = NULL;
538 /* Precleanup, we must make sure all exports get destroyed. */
539 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
541 CERROR("Precleanup %s returned %d\n",
543 class_decref(obd, "setup", obd);
548 struct obd_device *class_incref(struct obd_device *obd,
549 const char *scope, const void *source)
551 lu_ref_add_atomic(&obd->obd_reference, scope, source);
552 atomic_inc(&obd->obd_refcount);
553 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
554 atomic_read(&obd->obd_refcount));
559 void class_decref(struct obd_device *obd, const char *scope, const void *source)
564 spin_lock(&obd->obd_dev_lock);
565 atomic_dec(&obd->obd_refcount);
566 refs = atomic_read(&obd->obd_refcount);
567 spin_unlock(&obd->obd_dev_lock);
568 lu_ref_del(&obd->obd_reference, scope, source);
570 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
572 if ((refs == 1) && obd->obd_stopping) {
573 /* All exports have been destroyed; there should
574 be no more in-progress ops by this point.*/
576 spin_lock(&obd->obd_self_export->exp_lock);
577 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
578 spin_unlock(&obd->obd_self_export->exp_lock);
580 /* note that we'll recurse into class_decref again */
581 class_unlink_export(obd->obd_self_export);
586 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
587 obd->obd_name, obd->obd_uuid.uuid);
588 LASSERT(!obd->obd_attached);
589 if (obd->obd_stopping) {
590 /* If we're not stopping, we were never set up */
591 err = obd_cleanup(obd);
593 CERROR("Cleanup %s returned %d\n",
596 if (OBP(obd, detach)) {
597 err = OBP(obd, detach)(obd);
599 CERROR("Detach returned %d\n", err);
601 class_release_dev(obd);
605 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
607 struct obd_import *imp;
608 struct obd_uuid uuid;
612 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
613 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
614 CERROR("invalid conn_uuid\n");
617 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
618 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
619 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
620 CERROR("can't add connection on non-client dev\n");
624 imp = obd->u.cli.cl_import;
626 CERROR("try to add conn on immature client dev\n");
630 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
631 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
636 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
638 struct obd_import *imp;
639 struct obd_uuid uuid;
643 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
644 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
645 CERROR("invalid conn_uuid\n");
648 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
649 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
650 CERROR("can't del connection on non-client dev\n");
654 imp = obd->u.cli.cl_import;
656 CERROR("try to del conn on immature client dev\n");
660 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
661 rc = obd_del_conn(imp, &uuid);
666 CFS_LIST_HEAD(lustre_profile_list);
668 struct lustre_profile *class_get_profile(const char * prof)
670 struct lustre_profile *lprof;
673 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
674 if (!strcmp(lprof->lp_profile, prof)) {
681 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
682 int mdclen, char *mdc)
684 struct lustre_profile *lprof;
688 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
690 OBD_ALLOC(lprof, sizeof(*lprof));
693 CFS_INIT_LIST_HEAD(&lprof->lp_list);
695 LASSERT(proflen == (strlen(prof) + 1));
696 OBD_ALLOC(lprof->lp_profile, proflen);
697 if (lprof->lp_profile == NULL)
698 GOTO(out, err = -ENOMEM);
699 memcpy(lprof->lp_profile, prof, proflen);
701 LASSERT(osclen == (strlen(osc) + 1));
702 OBD_ALLOC(lprof->lp_dt, osclen);
703 if (lprof->lp_dt == NULL)
704 GOTO(out, err = -ENOMEM);
705 memcpy(lprof->lp_dt, osc, osclen);
708 LASSERT(mdclen == (strlen(mdc) + 1));
709 OBD_ALLOC(lprof->lp_md, mdclen);
710 if (lprof->lp_md == NULL)
711 GOTO(out, err = -ENOMEM);
712 memcpy(lprof->lp_md, mdc, mdclen);
715 list_add(&lprof->lp_list, &lustre_profile_list);
720 OBD_FREE(lprof->lp_md, mdclen);
722 OBD_FREE(lprof->lp_dt, osclen);
723 if (lprof->lp_profile)
724 OBD_FREE(lprof->lp_profile, proflen);
725 OBD_FREE(lprof, sizeof(*lprof));
729 void class_del_profile(const char *prof)
731 struct lustre_profile *lprof;
734 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
736 lprof = class_get_profile(prof);
738 list_del(&lprof->lp_list);
739 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
740 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
742 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
743 OBD_FREE(lprof, sizeof *lprof);
749 void class_del_profiles(void)
751 struct lustre_profile *lprof, *n;
754 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
755 list_del(&lprof->lp_list);
756 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
757 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
759 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
760 OBD_FREE(lprof, sizeof *lprof);
765 static int class_set_global(char *ptr, int val) {
768 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
770 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
772 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
774 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
775 at_early_margin = val;
776 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
781 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
787 /* We can't call ll_process_config directly because it lives in a module that
788 must be loaded after this one. */
789 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
791 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
793 client_process_config = cpc;
795 EXPORT_SYMBOL(lustre_register_client_process_config);
797 int class_process_config(struct lustre_cfg *lcfg)
799 struct obd_device *obd;
802 LASSERT(lcfg && !IS_ERR(lcfg));
803 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
805 /* Commands that don't need a device */
806 switch(lcfg->lcfg_command) {
808 err = class_attach(lcfg);
811 case LCFG_ADD_UUID: {
812 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
813 " (%s)\n", lustre_cfg_string(lcfg, 1),
814 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
816 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
819 case LCFG_DEL_UUID: {
820 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
821 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
822 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
824 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
827 case LCFG_MOUNTOPT: {
828 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
829 lustre_cfg_string(lcfg, 1),
830 lustre_cfg_string(lcfg, 2),
831 lustre_cfg_string(lcfg, 3));
832 /* set these mount options somewhere, so ll_fill_super
834 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
835 lustre_cfg_string(lcfg, 1),
836 LUSTRE_CFG_BUFLEN(lcfg, 2),
837 lustre_cfg_string(lcfg, 2),
838 LUSTRE_CFG_BUFLEN(lcfg, 3),
839 lustre_cfg_string(lcfg, 3));
842 case LCFG_DEL_MOUNTOPT: {
843 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
844 lustre_cfg_string(lcfg, 1));
845 class_del_profile(lustre_cfg_string(lcfg, 1));
848 case LCFG_SET_TIMEOUT: {
849 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
850 obd_timeout, lcfg->lcfg_num);
851 obd_timeout = max(lcfg->lcfg_num, 1U);
854 case LCFG_SET_LDLM_TIMEOUT: {
855 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
856 ldlm_timeout, lcfg->lcfg_num);
857 ldlm_timeout = max(lcfg->lcfg_num, 1U);
858 if (ldlm_timeout >= obd_timeout)
859 ldlm_timeout = max(obd_timeout / 3, 1U);
863 case LCFG_SET_UPCALL: {
864 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
865 /* COMPAT_146 Don't fail on old configs */
869 struct cfg_marker *marker;
870 marker = lustre_cfg_buf(lcfg, 1);
871 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
872 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
877 /* llite has no obd */
878 if ((class_match_param(lustre_cfg_string(lcfg, 1),
879 PARAM_LLITE, 0) == 0) &&
880 client_process_config) {
881 err = (*client_process_config)(lcfg);
883 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
884 PARAM_SYS, &tmp) == 0)) {
885 /* Global param settings */
886 err = class_set_global(tmp, lcfg->lcfg_num);
887 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
888 unknown globals would cause config to fail */
890 CWARN("Ignoring unknown param %s\n", tmp);
899 /* Commands that require a device */
900 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
902 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
903 CERROR("this lcfg command requires a device name\n");
905 CERROR("no device for: %s\n",
906 lustre_cfg_string(lcfg, 0));
908 GOTO(out, err = -EINVAL);
911 switch(lcfg->lcfg_command) {
913 err = class_setup(obd, lcfg);
917 err = class_detach(obd, lcfg);
921 err = class_cleanup(obd, lcfg);
924 case LCFG_ADD_CONN: {
925 err = class_add_conn(obd, lcfg);
928 case LCFG_DEL_CONN: {
929 err = class_del_conn(obd, lcfg);
932 case LCFG_POOL_NEW: {
933 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
937 case LCFG_POOL_ADD: {
938 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
939 lustre_cfg_string(lcfg, 3));
943 case LCFG_POOL_REM: {
944 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
945 lustre_cfg_string(lcfg, 3));
949 case LCFG_POOL_DEL: {
950 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
955 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
961 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
962 CWARN("Ignoring error %d on optional command %#x\n", err,
969 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
970 struct lustre_cfg *lcfg, void *data)
973 struct lprocfs_vars *var;
975 int i, keylen, vallen;
976 int matched = 0, j = 0;
981 if (lcfg->lcfg_command != LCFG_PARAM) {
982 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
986 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
987 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
988 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
989 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
990 key = lustre_cfg_buf(lcfg, i);
991 /* Strip off prefix */
992 class_match_param(key, prefix, &key);
993 sval = strchr(key, '=');
994 if (!sval || (*(sval + 1) == 0)) {
995 CERROR("Can't parse param %s (missing '=')\n", key);
996 /* rc = -EINVAL; continue parsing other params */
1001 vallen = strlen(sval);
1004 /* Search proc entries */
1005 while (lvars[j].name) {
1007 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1008 keylen == strlen(var->name)) {
1011 if (var->write_fptr) {
1015 rc = (var->write_fptr)(NULL, sval,
1024 /* If the prefix doesn't match, return error so we
1025 can pass it down the stack */
1026 if (strnchr(key, keylen, '.'))
1028 CERROR("%s: unknown param %s\n",
1029 (char *)lustre_cfg_string(lcfg, 0), key);
1030 /* rc = -EINVAL; continue parsing other params */
1032 } else if (rc < 0) {
1033 CERROR("writing proc entry %s err %d\n",
1037 LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
1038 lustre_cfg_string(lcfg, 0),
1039 (int)strlen(prefix) - 1, prefix,
1040 (int)(sval - key - 1), key, sval);
1050 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1051 /* Don't throw config error */
1056 int class_config_dump_handler(struct llog_handle * handle,
1057 struct llog_rec_hdr *rec, void *data);
1060 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1062 #define lustre_check_exclusion(a,b) 0
1065 static int class_config_llog_handler(struct llog_handle * handle,
1066 struct llog_rec_hdr *rec, void *data)
1068 struct config_llog_instance *clli = data;
1069 int cfg_len = rec->lrh_len;
1070 char *cfg_buf = (char*) (rec + 1);
1074 //class_config_dump_handler(handle, rec, data);
1076 switch (rec->lrh_type) {
1078 struct lustre_cfg *lcfg, *lcfg_new;
1079 struct lustre_cfg_bufs bufs;
1080 char *inst_name = NULL;
1082 int inst = 0, swab = 0;
1084 lcfg = (struct lustre_cfg *)cfg_buf;
1085 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1086 lustre_swab_lustre_cfg(lcfg);
1090 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1094 /* Figure out config state info */
1095 if (lcfg->lcfg_command == LCFG_MARKER) {
1096 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1097 lustre_swab_cfg_marker(marker, swab,
1098 LUSTRE_CFG_BUFLEN(lcfg, 1));
1099 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1100 clli->cfg_flags, marker->cm_flags);
1101 if (marker->cm_flags & CM_START) {
1102 /* all previous flags off */
1103 clli->cfg_flags = CFG_F_MARKER;
1104 if (marker->cm_flags & CM_SKIP) {
1105 clli->cfg_flags |= CFG_F_SKIP;
1106 CDEBUG(D_CONFIG, "SKIP #%d\n",
1108 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1110 lustre_check_exclusion(clli->cfg_sb,
1111 marker->cm_tgtname))) {
1112 clli->cfg_flags |= CFG_F_EXCLUDE;
1113 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1116 } else if (marker->cm_flags & CM_END) {
1117 clli->cfg_flags = 0;
1120 /* A config command without a start marker before it is
1121 illegal (post 146) */
1122 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1123 !(clli->cfg_flags & CFG_F_MARKER) &&
1124 (lcfg->lcfg_command != LCFG_MARKER)) {
1125 CWARN("Config not inside markers, ignoring! "
1126 "(inst: %s, uuid: %s, flags: %#x)\n",
1127 clli->cfg_instance ? clli->cfg_instance : "<null>",
1128 clli->cfg_uuid.uuid, clli->cfg_flags);
1129 clli->cfg_flags |= CFG_F_SKIP;
1131 if (clli->cfg_flags & CFG_F_SKIP) {
1132 CDEBUG(D_CONFIG, "skipping %#x\n",
1135 /* No processing! */
1140 * For interoperability between 1.8 and 2.0,
1141 * rename "mds" obd device type to "mdt".
1144 char *typename = lustre_cfg_string(lcfg, 1);
1145 char *index = lustre_cfg_string(lcfg, 2);
1147 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1148 strcmp(typename, "mds") == 0)) {
1149 CWARN("For 1.8 interoperability, rename obd "
1150 "type from mds to mdt\n");
1153 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1154 strcmp(index, "type") == 0)) {
1155 CDEBUG(D_INFO, "For 1.8 interoperability, "
1156 "set this index to '0'\n");
1162 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1163 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1164 /* Add inactive instead */
1165 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1167 lustre_cfg_bufs_init(&bufs, lcfg);
1169 if (clli && clli->cfg_instance &&
1170 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1172 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1173 strlen(clli->cfg_instance) + 1;
1174 OBD_ALLOC(inst_name, inst_len);
1175 if (inst_name == NULL)
1176 GOTO(out, rc = -ENOMEM);
1177 sprintf(inst_name, "%s-%s",
1178 lustre_cfg_string(lcfg, 0),
1179 clli->cfg_instance);
1180 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1181 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1182 lcfg->lcfg_command, inst_name);
1185 /* we override the llog's uuid for clients, to insure they
1187 if (clli && clli->cfg_instance &&
1188 lcfg->lcfg_command == LCFG_ATTACH) {
1189 lustre_cfg_bufs_set_string(&bufs, 2,
1190 clli->cfg_uuid.uuid);
1193 * sptlrpc config record, we expect 2 data segments:
1194 * [0]: fs_name/target_name,
1196 * moving them to index [1] and [2], and insert MGC's
1197 * obdname at index [0].
1199 if (clli && clli->cfg_instance == NULL &&
1200 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1201 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1202 bufs.lcfg_buflen[1]);
1203 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1204 bufs.lcfg_buflen[0]);
1205 lustre_cfg_bufs_set_string(&bufs, 0,
1209 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1211 lcfg_new->lcfg_num = lcfg->lcfg_num;
1212 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1214 /* XXX Hack to try to remain binary compatible with
1215 * pre-newconfig logs */
1216 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1217 (lcfg->lcfg_nid >> 32) == 0) {
1218 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1220 lcfg_new->lcfg_nid =
1221 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1222 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1223 lcfg->lcfg_nal, addr,
1224 libcfs_nid2str(lcfg_new->lcfg_nid));
1226 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1229 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1231 rc = class_process_config(lcfg_new);
1232 lustre_cfg_free(lcfg_new);
1235 OBD_FREE(inst_name, inst_len);
1239 CERROR("Unknown llog record type %#x encountered\n",
1245 CERROR("Err %d on cfg command:\n", rc);
1246 class_config_dump_handler(handle, rec, data);
1251 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1252 struct config_llog_instance *cfg)
1254 struct llog_process_cat_data cd = {0, 0};
1255 struct llog_handle *llh;
1259 CDEBUG(D_INFO, "looking up llog %s\n", name);
1260 rc = llog_create(ctxt, &llh, NULL, name);
1264 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1266 GOTO(parse_out, rc);
1268 /* continue processing from where we last stopped to end-of-log */
1270 cd.lpcd_first_idx = cfg->cfg_last_idx;
1271 cd.lpcd_last_idx = 0;
1273 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1275 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1276 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1279 cfg->cfg_last_idx = cd.lpcd_last_idx;
1282 rc2 = llog_close(llh);
1289 int class_config_dump_handler(struct llog_handle * handle,
1290 struct llog_rec_hdr *rec, void *data)
1292 int cfg_len = rec->lrh_len;
1293 char *cfg_buf = (char*) (rec + 1);
1294 char *outstr, *ptr, *end;
1298 OBD_ALLOC(outstr, 256);
1304 if (rec->lrh_type == OBD_CFG_REC) {
1305 struct lustre_cfg *lcfg;
1308 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1311 lcfg = (struct lustre_cfg *)cfg_buf;
1313 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1314 lcfg->lcfg_command);
1315 if (lcfg->lcfg_flags) {
1316 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1319 if (lcfg->lcfg_num) {
1320 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1323 if (lcfg->lcfg_nid) {
1324 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1325 libcfs_nid2str(lcfg->lcfg_nid),
1328 if (lcfg->lcfg_command == LCFG_MARKER) {
1329 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1330 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1331 marker->cm_step, marker->cm_flags,
1332 marker->cm_tgtname, marker->cm_comment);
1334 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1335 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1336 lustre_cfg_string(lcfg, i));
1339 LCONSOLE(D_WARNING, " %s\n", outstr);
1341 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1345 OBD_FREE(outstr, 256);
1349 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1350 struct config_llog_instance *cfg)
1352 struct llog_handle *llh;
1356 LCONSOLE_INFO("Dumping config log %s\n", name);
1358 rc = llog_create(ctxt, &llh, NULL, name);
1362 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1364 GOTO(parse_out, rc);
1366 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1368 rc2 = llog_close(llh);
1372 LCONSOLE_INFO("End config log %s\n", name);
1377 /* Cleanup and detach */
1378 int class_manual_cleanup(struct obd_device *obd)
1381 struct lustre_cfg *lcfg;
1382 struct lustre_cfg_bufs bufs;
1387 CERROR("empty cleanup\n");
1396 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1397 obd->obd_name, flags);
1399 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1400 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1401 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1405 rc = class_process_config(lcfg);
1407 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1411 /* the lcfg is almost the same for both ops */
1412 lcfg->lcfg_command = LCFG_DETACH;
1413 rc = class_process_config(lcfg);
1415 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1417 lustre_cfg_free(lcfg);
1422 * uuid<->export lustre hash operations
1426 uuid_hash(lustre_hash_t *lh, void *key, unsigned mask)
1428 return lh_djb2_hash(((struct obd_uuid *)key)->uuid,
1429 sizeof(((struct obd_uuid *)key)->uuid), mask);
1433 uuid_key(struct hlist_node *hnode)
1435 struct obd_export *exp;
1437 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1439 RETURN(&exp->exp_client_uuid);
1443 * NOTE: It is impossible to find an export that is in failed
1444 * state with this function
1447 uuid_compare(void *key, struct hlist_node *hnode)
1449 struct obd_export *exp;
1452 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1454 RETURN(obd_uuid_equals((struct obd_uuid *)key,&exp->exp_client_uuid) &&
1459 uuid_export_get(struct hlist_node *hnode)
1461 struct obd_export *exp;
1463 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1464 class_export_get(exp);
1470 uuid_export_put(struct hlist_node *hnode)
1472 struct obd_export *exp;
1474 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1475 class_export_put(exp);
1480 static lustre_hash_ops_t uuid_hash_ops = {
1481 .lh_hash = uuid_hash,
1483 .lh_compare = uuid_compare,
1484 .lh_get = uuid_export_get,
1485 .lh_put = uuid_export_put,
1490 * nid<->export hash operations
1494 nid_hash(lustre_hash_t *lh, void *key, unsigned mask)
1496 return lh_djb2_hash(key, sizeof(lnet_nid_t), mask);
1500 nid_key(struct hlist_node *hnode)
1502 struct obd_export *exp;
1504 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1506 RETURN(&exp->exp_connection->c_peer.nid);
1510 * NOTE: It is impossible to find an export that is in failed
1511 * state with this function
1514 nid_compare(void *key, struct hlist_node *hnode)
1516 struct obd_export *exp;
1519 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1521 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1526 nid_export_get(struct hlist_node *hnode)
1528 struct obd_export *exp;
1530 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1531 class_export_get(exp);
1537 nid_export_put(struct hlist_node *hnode)
1539 struct obd_export *exp;
1541 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1542 class_export_put(exp);
1547 static lustre_hash_ops_t nid_hash_ops = {
1548 .lh_hash = nid_hash,
1550 .lh_compare = nid_compare,
1551 .lh_get = nid_export_get,
1552 .lh_put = nid_export_put,
1557 * nid<->nidstats hash operations
1561 nidstats_key(struct hlist_node *hnode)
1563 struct nid_stat *ns;
1565 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1571 nidstats_compare(void *key, struct hlist_node *hnode)
1573 RETURN(*(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key);
1577 nidstats_get(struct hlist_node *hnode)
1579 struct nid_stat *ns;
1581 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1588 nidstats_put(struct hlist_node *hnode)
1590 struct nid_stat *ns;
1592 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1598 static lustre_hash_ops_t nid_stat_hash_ops = {
1599 .lh_hash = nid_hash,
1600 .lh_key = nidstats_key,
1601 .lh_compare = nidstats_compare,
1602 .lh_get = nidstats_get,
1603 .lh_put = nidstats_put,