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_delayed_exports);
259 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
260 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
261 spin_lock_init(&obd->obd_nid_lock);
262 spin_lock_init(&obd->obd_dev_lock);
263 sema_init(&obd->obd_dev_sem, 1);
264 spin_lock_init(&obd->obd_osfs_lock);
265 /* obd->obd_osfs_age must be set to a value in the distant
266 * past to guarantee a fresh statfs is fetched on mount. */
267 obd->obd_osfs_age = cfs_time_shift_64(-1000);
269 /* XXX belongs in setup not attach */
271 cfs_init_timer(&obd->obd_recovery_timer);
272 spin_lock_init(&obd->obd_processing_task_lock);
273 cfs_waitq_init(&obd->obd_next_transno_waitq);
274 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
275 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
276 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
277 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
279 llog_group_init(&obd->obd_olg, FILTER_GROUP_LLOG);
282 if (len >= sizeof(obd->obd_uuid)) {
283 CERROR("uuid must be < %d bytes long\n",
284 (int)sizeof(obd->obd_uuid));
285 GOTO(out, rc = -EINVAL);
287 memcpy(obd->obd_uuid.uuid, uuid, len);
290 if (OBP(obd, attach)) {
291 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
293 GOTO(out, rc = -EINVAL);
296 /* Detach drops this */
297 spin_lock(&obd->obd_dev_lock);
298 atomic_set(&obd->obd_refcount, 1);
299 spin_unlock(&obd->obd_dev_lock);
300 lu_ref_init(&obd->obd_reference);
301 lu_ref_add(&obd->obd_reference, "attach", obd);
303 obd->obd_attached = 1;
304 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
305 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
309 class_release_dev(obd);
314 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
317 struct obd_export *exp;
320 LASSERT(obd != NULL);
321 LASSERTF(obd == class_num2obd(obd->obd_minor),
322 "obd %p != obd_devs[%d] %p\n",
323 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
324 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
325 "obd %p obd_magic %08x != %08x\n",
326 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
328 /* have we attached a type to this device? */
329 if (!obd->obd_attached) {
330 CERROR("Device %d not attached\n", obd->obd_minor);
334 if (obd->obd_set_up) {
335 CERROR("Device %d already setup (type %s)\n",
336 obd->obd_minor, obd->obd_type->typ_name);
340 /* is someone else setting us up right now? (attach inits spinlock) */
341 spin_lock(&obd->obd_dev_lock);
342 if (obd->obd_starting) {
343 spin_unlock(&obd->obd_dev_lock);
344 CERROR("Device %d setup in progress (type %s)\n",
345 obd->obd_minor, obd->obd_type->typ_name);
348 /* just leave this on forever. I can't use obd_set_up here because
349 other fns check that status, and we're not actually set up yet. */
350 obd->obd_starting = 1;
351 obd->obd_uuid_hash = NULL;
352 obd->obd_nid_hash = NULL;
353 obd->obd_nid_stats_hash = NULL;
354 spin_unlock(&obd->obd_dev_lock);
356 /* create an uuid-export lustre hash */
357 obd->obd_uuid_hash = lustre_hash_init("UUID_HASH",
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",
369 if (!obd->obd_nid_hash)
370 GOTO(err_hash, err = -ENOMEM);
372 /* create a nid-stats lustre hash */
373 obd->obd_nid_stats_hash = lustre_hash_init("NID_STATS",
374 HASH_NID_STATS_CUR_BITS,
375 HASH_NID_STATS_MAX_BITS,
376 &nid_stat_hash_ops, 0);
377 if (!obd->obd_nid_stats_hash)
378 GOTO(err_hash, err = -ENOMEM);
380 exp = class_new_export(obd, &obd->obd_uuid);
382 GOTO(err_hash, err = PTR_ERR(exp));
384 obd->obd_self_export = exp;
385 list_del_init(&exp->exp_obd_chain_timed);
386 class_export_put(exp);
388 err = obd_setup(obd, lcfg);
394 spin_lock(&obd->obd_dev_lock);
395 /* cleanup drops this */
396 class_incref(obd, "setup", obd);
397 spin_unlock(&obd->obd_dev_lock);
399 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
400 obd->obd_name, obd->obd_uuid.uuid);
404 if (obd->obd_self_export) {
405 class_unlink_export(obd->obd_self_export);
406 obd->obd_self_export = NULL;
409 if (obd->obd_uuid_hash) {
410 lustre_hash_exit(obd->obd_uuid_hash);
411 obd->obd_uuid_hash = NULL;
413 if (obd->obd_nid_hash) {
414 lustre_hash_exit(obd->obd_nid_hash);
415 obd->obd_nid_hash = NULL;
417 if (obd->obd_nid_stats_hash) {
418 lustre_hash_exit(obd->obd_nid_stats_hash);
419 obd->obd_nid_stats_hash = NULL;
421 obd->obd_starting = 0;
422 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
426 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
430 if (obd->obd_set_up) {
431 CERROR("OBD device %d still set up\n", obd->obd_minor);
435 spin_lock(&obd->obd_dev_lock);
436 if (!obd->obd_attached) {
437 spin_unlock(&obd->obd_dev_lock);
438 CERROR("OBD device %d not attached\n", obd->obd_minor);
441 obd->obd_attached = 0;
442 spin_unlock(&obd->obd_dev_lock);
444 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
445 obd->obd_name, obd->obd_uuid.uuid);
447 class_decref(obd, "attach", obd);
449 /* not strictly necessary, but cleans up eagerly */
450 obd_zombie_impexp_cull();
455 static void dump_exports(struct obd_device *obd)
457 struct obd_export *exp;
459 spin_lock(&obd->obd_dev_lock);
460 list_for_each_entry(exp, &obd->obd_exports, exp_obd_chain) {
461 struct ptlrpc_reply_state *rs;
462 struct ptlrpc_reply_state *first_reply = NULL;
465 spin_lock(&exp->exp_lock);
466 list_for_each_entry (rs, &exp->exp_outstanding_replies,
472 spin_unlock(&exp->exp_lock);
474 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
475 obd->obd_name, exp, exp->exp_client_uuid.uuid,
476 obd_export_nid2str(exp),
477 atomic_read(&exp->exp_refcount),
478 exp->exp_failed, nreplies, first_reply,
479 nreplies > 3 ? "..." : "");
481 spin_unlock(&obd->obd_dev_lock);
484 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
490 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
492 if (!obd->obd_set_up) {
493 CERROR("Device %d not setup\n", obd->obd_minor);
497 spin_lock(&obd->obd_dev_lock);
498 if (obd->obd_stopping) {
499 spin_unlock(&obd->obd_dev_lock);
500 CERROR("OBD %d already stopping\n", obd->obd_minor);
503 /* Leave this on forever */
504 obd->obd_stopping = 1;
505 spin_unlock(&obd->obd_dev_lock);
507 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
508 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
514 LCONSOLE_WARN("Failing over %s\n",
517 obd->obd_no_transno = 1;
518 obd->obd_no_recov = 1;
519 if (OBP(obd, iocontrol)) {
520 obd_iocontrol(OBD_IOC_SYNC,
521 obd->obd_self_export,
523 /* Set the obd readonly if we can */
524 obd_iocontrol(OBD_IOC_SET_READONLY,
525 obd->obd_self_export,
530 CERROR("Unrecognised flag '%c'\n", *flag);
534 LASSERT(obd->obd_self_export);
536 /* The three references that should be remaining are the
537 * obd_self_export and the attach and setup references. */
538 if (atomic_read(&obd->obd_refcount) > 3) {
539 /* refcounf - 3 might be the number of real exports
540 (excluding self export). But class_incref is called
541 by other things as well, so don't count on it. */
542 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
543 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
545 class_disconnect_exports(obd);
548 /* destroy an uuid-export hash body */
549 if (obd->obd_uuid_hash) {
550 lustre_hash_exit(obd->obd_uuid_hash);
551 obd->obd_uuid_hash = NULL;
554 /* destroy a nid-export hash body */
555 if (obd->obd_nid_hash) {
556 lustre_hash_exit(obd->obd_nid_hash);
557 obd->obd_nid_hash = NULL;
560 /* destroy a nid-stats hash body */
561 if (obd->obd_nid_stats_hash) {
562 lustre_hash_exit(obd->obd_nid_stats_hash);
563 obd->obd_nid_stats_hash = NULL;
566 /* Precleanup, we must make sure all exports get destroyed. */
567 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
569 CERROR("Precleanup %s returned %d\n",
571 class_decref(obd, "setup", obd);
576 struct obd_device *class_incref(struct obd_device *obd,
577 const char *scope, const void *source)
579 lu_ref_add_atomic(&obd->obd_reference, scope, source);
580 atomic_inc(&obd->obd_refcount);
581 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
582 atomic_read(&obd->obd_refcount));
587 void class_decref(struct obd_device *obd, const char *scope, const void *source)
592 spin_lock(&obd->obd_dev_lock);
593 atomic_dec(&obd->obd_refcount);
594 refs = atomic_read(&obd->obd_refcount);
595 spin_unlock(&obd->obd_dev_lock);
596 lu_ref_del(&obd->obd_reference, scope, source);
598 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
600 if ((refs == 1) && obd->obd_stopping) {
601 /* All exports have been destroyed; there should
602 be no more in-progress ops by this point.*/
604 spin_lock(&obd->obd_self_export->exp_lock);
605 obd->obd_self_export->exp_flags |= exp_flags_from_obd(obd);
606 spin_unlock(&obd->obd_self_export->exp_lock);
608 /* note that we'll recurse into class_decref again */
609 class_unlink_export(obd->obd_self_export);
614 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
615 obd->obd_name, obd->obd_uuid.uuid);
616 LASSERT(!obd->obd_attached);
617 if (obd->obd_stopping) {
618 /* If we're not stopping, we were never set up */
619 err = obd_cleanup(obd);
621 CERROR("Cleanup %s returned %d\n",
624 if (OBP(obd, detach)) {
625 err = OBP(obd, detach)(obd);
627 CERROR("Detach returned %d\n", err);
629 class_release_dev(obd);
633 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
635 struct obd_import *imp;
636 struct obd_uuid uuid;
640 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
641 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
642 CERROR("invalid conn_uuid\n");
645 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
646 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
647 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
648 CERROR("can't add connection on non-client dev\n");
652 imp = obd->u.cli.cl_import;
654 CERROR("try to add conn on immature client dev\n");
658 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
659 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
664 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
666 struct obd_import *imp;
667 struct obd_uuid uuid;
671 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
672 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
673 CERROR("invalid conn_uuid\n");
676 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
677 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
678 CERROR("can't del connection on non-client dev\n");
682 imp = obd->u.cli.cl_import;
684 CERROR("try to del conn on immature client dev\n");
688 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
689 rc = obd_del_conn(imp, &uuid);
694 CFS_LIST_HEAD(lustre_profile_list);
696 struct lustre_profile *class_get_profile(const char * prof)
698 struct lustre_profile *lprof;
701 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
702 if (!strcmp(lprof->lp_profile, prof)) {
709 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
710 int mdclen, char *mdc)
712 struct lustre_profile *lprof;
716 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
718 OBD_ALLOC(lprof, sizeof(*lprof));
721 CFS_INIT_LIST_HEAD(&lprof->lp_list);
723 LASSERT(proflen == (strlen(prof) + 1));
724 OBD_ALLOC(lprof->lp_profile, proflen);
725 if (lprof->lp_profile == NULL)
726 GOTO(out, err = -ENOMEM);
727 memcpy(lprof->lp_profile, prof, proflen);
729 LASSERT(osclen == (strlen(osc) + 1));
730 OBD_ALLOC(lprof->lp_dt, osclen);
731 if (lprof->lp_dt == NULL)
732 GOTO(out, err = -ENOMEM);
733 memcpy(lprof->lp_dt, osc, osclen);
736 LASSERT(mdclen == (strlen(mdc) + 1));
737 OBD_ALLOC(lprof->lp_md, mdclen);
738 if (lprof->lp_md == NULL)
739 GOTO(out, err = -ENOMEM);
740 memcpy(lprof->lp_md, mdc, mdclen);
743 list_add(&lprof->lp_list, &lustre_profile_list);
748 OBD_FREE(lprof->lp_md, mdclen);
750 OBD_FREE(lprof->lp_dt, osclen);
751 if (lprof->lp_profile)
752 OBD_FREE(lprof->lp_profile, proflen);
753 OBD_FREE(lprof, sizeof(*lprof));
757 void class_del_profile(const char *prof)
759 struct lustre_profile *lprof;
762 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
764 lprof = class_get_profile(prof);
766 list_del(&lprof->lp_list);
767 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
768 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
770 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
771 OBD_FREE(lprof, sizeof *lprof);
777 void class_del_profiles(void)
779 struct lustre_profile *lprof, *n;
782 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
783 list_del(&lprof->lp_list);
784 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
785 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
787 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
788 OBD_FREE(lprof, sizeof *lprof);
793 static int class_set_global(char *ptr, int val) {
796 if (class_match_param(ptr, PARAM_AT_MIN, NULL) == 0)
798 else if (class_match_param(ptr, PARAM_AT_MAX, NULL) == 0)
800 else if (class_match_param(ptr, PARAM_AT_EXTRA, NULL) == 0)
802 else if (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, NULL) == 0)
803 at_early_margin = val;
804 else if (class_match_param(ptr, PARAM_AT_HISTORY, NULL) == 0)
809 CDEBUG(D_IOCTL, "global %s = %d\n", ptr, val);
815 /* We can't call ll_process_config directly because it lives in a module that
816 must be loaded after this one. */
817 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
819 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
821 client_process_config = cpc;
823 EXPORT_SYMBOL(lustre_register_client_process_config);
825 int class_process_config(struct lustre_cfg *lcfg)
827 struct obd_device *obd;
830 LASSERT(lcfg && !IS_ERR(lcfg));
831 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
833 /* Commands that don't need a device */
834 switch(lcfg->lcfg_command) {
836 err = class_attach(lcfg);
839 case LCFG_ADD_UUID: {
840 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
841 " (%s)\n", lustre_cfg_string(lcfg, 1),
842 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
844 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
847 case LCFG_DEL_UUID: {
848 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
849 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
850 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
852 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
855 case LCFG_MOUNTOPT: {
856 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
857 lustre_cfg_string(lcfg, 1),
858 lustre_cfg_string(lcfg, 2),
859 lustre_cfg_string(lcfg, 3));
860 /* set these mount options somewhere, so ll_fill_super
862 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
863 lustre_cfg_string(lcfg, 1),
864 LUSTRE_CFG_BUFLEN(lcfg, 2),
865 lustre_cfg_string(lcfg, 2),
866 LUSTRE_CFG_BUFLEN(lcfg, 3),
867 lustre_cfg_string(lcfg, 3));
870 case LCFG_DEL_MOUNTOPT: {
871 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
872 lustre_cfg_string(lcfg, 1));
873 class_del_profile(lustre_cfg_string(lcfg, 1));
876 case LCFG_SET_TIMEOUT: {
877 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
878 obd_timeout, lcfg->lcfg_num);
879 obd_timeout = max(lcfg->lcfg_num, 1U);
882 case LCFG_SET_LDLM_TIMEOUT: {
883 CDEBUG(D_IOCTL, "changing lustre ldlm_timeout from %d to %d\n",
884 ldlm_timeout, lcfg->lcfg_num);
885 ldlm_timeout = max(lcfg->lcfg_num, 1U);
886 if (ldlm_timeout >= obd_timeout)
887 ldlm_timeout = max(obd_timeout / 3, 1U);
891 case LCFG_SET_UPCALL: {
892 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
893 /* COMPAT_146 Don't fail on old configs */
897 struct cfg_marker *marker;
898 marker = lustre_cfg_buf(lcfg, 1);
899 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
900 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
905 /* llite has no obd */
906 if ((class_match_param(lustre_cfg_string(lcfg, 1),
907 PARAM_LLITE, 0) == 0) &&
908 client_process_config) {
909 err = (*client_process_config)(lcfg);
911 } else if ((class_match_param(lustre_cfg_string(lcfg, 1),
912 PARAM_SYS, &tmp) == 0)) {
913 /* Global param settings */
914 err = class_set_global(tmp, lcfg->lcfg_num);
915 /* Note that since LCFG_PARAM is LCFG_REQUIRED, new
916 unknown globals would cause config to fail */
918 CWARN("Ignoring unknown param %s\n", tmp);
927 /* Commands that require a device */
928 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
930 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
931 CERROR("this lcfg command requires a device name\n");
933 CERROR("no device for: %s\n",
934 lustre_cfg_string(lcfg, 0));
936 GOTO(out, err = -EINVAL);
939 switch(lcfg->lcfg_command) {
941 err = class_setup(obd, lcfg);
945 err = class_detach(obd, lcfg);
949 err = class_cleanup(obd, lcfg);
952 case LCFG_ADD_CONN: {
953 err = class_add_conn(obd, lcfg);
956 case LCFG_DEL_CONN: {
957 err = class_del_conn(obd, lcfg);
960 case LCFG_POOL_NEW: {
961 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
965 case LCFG_POOL_ADD: {
966 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
967 lustre_cfg_string(lcfg, 3));
971 case LCFG_POOL_REM: {
972 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
973 lustre_cfg_string(lcfg, 3));
977 case LCFG_POOL_DEL: {
978 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
983 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
989 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
990 CWARN("Ignoring error %d on optional command %#x\n", err,
997 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
998 struct lustre_cfg *lcfg, void *data)
1001 struct lprocfs_vars *var;
1003 int i, keylen, vallen;
1004 int matched = 0, j = 0;
1009 if (lcfg->lcfg_command != LCFG_PARAM) {
1010 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1014 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
1015 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
1016 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
1017 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
1018 key = lustre_cfg_buf(lcfg, i);
1019 /* Strip off prefix */
1020 class_match_param(key, prefix, &key);
1021 sval = strchr(key, '=');
1022 if (!sval || (*(sval + 1) == 0)) {
1023 CERROR("Can't parse param %s (missing '=')\n", key);
1024 /* rc = -EINVAL; continue parsing other params */
1027 keylen = sval - key;
1029 vallen = strlen(sval);
1032 /* Search proc entries */
1033 while (lvars[j].name) {
1035 if (class_match_param(key, (char *)var->name, 0) == 0 &&
1036 keylen == strlen(var->name)) {
1039 if (var->write_fptr) {
1043 rc = (var->write_fptr)(NULL, sval,
1052 /* If the prefix doesn't match, return error so we
1053 can pass it down the stack */
1054 if (strnchr(key, keylen, '.'))
1056 CERROR("%s: unknown param %s\n",
1057 (char *)lustre_cfg_string(lcfg, 0), key);
1058 /* rc = -EINVAL; continue parsing other params */
1060 } else if (rc < 0) {
1061 CERROR("writing proc entry %s err %d\n",
1065 LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
1066 lustre_cfg_string(lcfg, 0),
1067 (int)strlen(prefix) - 1, prefix,
1068 (int)(sval - key - 1), key, sval);
1078 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
1079 /* Don't throw config error */
1084 int class_config_dump_handler(struct llog_handle * handle,
1085 struct llog_rec_hdr *rec, void *data);
1088 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
1090 #define lustre_check_exclusion(a,b) 0
1093 static int class_config_llog_handler(struct llog_handle * handle,
1094 struct llog_rec_hdr *rec, void *data)
1096 struct config_llog_instance *clli = data;
1097 int cfg_len = rec->lrh_len;
1098 char *cfg_buf = (char*) (rec + 1);
1102 //class_config_dump_handler(handle, rec, data);
1104 switch (rec->lrh_type) {
1106 struct lustre_cfg *lcfg, *lcfg_new;
1107 struct lustre_cfg_bufs bufs;
1108 char *inst_name = NULL;
1110 int inst = 0, swab = 0;
1112 lcfg = (struct lustre_cfg *)cfg_buf;
1113 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
1114 lustre_swab_lustre_cfg(lcfg);
1118 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1122 /* Figure out config state info */
1123 if (lcfg->lcfg_command == LCFG_MARKER) {
1124 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1125 lustre_swab_cfg_marker(marker, swab,
1126 LUSTRE_CFG_BUFLEN(lcfg, 1));
1127 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
1128 clli->cfg_flags, marker->cm_flags);
1129 if (marker->cm_flags & CM_START) {
1130 /* all previous flags off */
1131 clli->cfg_flags = CFG_F_MARKER;
1132 if (marker->cm_flags & CM_SKIP) {
1133 clli->cfg_flags |= CFG_F_SKIP;
1134 CDEBUG(D_CONFIG, "SKIP #%d\n",
1136 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1138 lustre_check_exclusion(clli->cfg_sb,
1139 marker->cm_tgtname))) {
1140 clli->cfg_flags |= CFG_F_EXCLUDE;
1141 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1144 } else if (marker->cm_flags & CM_END) {
1145 clli->cfg_flags = 0;
1148 /* A config command without a start marker before it is
1149 illegal (post 146) */
1150 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1151 !(clli->cfg_flags & CFG_F_MARKER) &&
1152 (lcfg->lcfg_command != LCFG_MARKER)) {
1153 CWARN("Config not inside markers, ignoring! "
1154 "(inst: %s, uuid: %s, flags: %#x)\n",
1155 clli->cfg_instance ? clli->cfg_instance : "<null>",
1156 clli->cfg_uuid.uuid, clli->cfg_flags);
1157 clli->cfg_flags |= CFG_F_SKIP;
1159 if (clli->cfg_flags & CFG_F_SKIP) {
1160 CDEBUG(D_CONFIG, "skipping %#x\n",
1163 /* No processing! */
1168 * For interoperability between 1.8 and 2.0,
1169 * rename "mds" obd device type to "mdt".
1172 char *typename = lustre_cfg_string(lcfg, 1);
1173 char *index = lustre_cfg_string(lcfg, 2);
1175 if ((lcfg->lcfg_command == LCFG_ATTACH && typename &&
1176 strcmp(typename, "mds") == 0)) {
1177 CWARN("For 1.8 interoperability, rename obd "
1178 "type from mds to mdt\n");
1181 if ((lcfg->lcfg_command == LCFG_SETUP && index &&
1182 strcmp(index, "type") == 0)) {
1183 CDEBUG(D_INFO, "For 1.8 interoperability, "
1184 "set this index to '0'\n");
1190 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1191 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1192 /* Add inactive instead */
1193 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1195 lustre_cfg_bufs_init(&bufs, lcfg);
1197 if (clli && clli->cfg_instance &&
1198 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1200 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1201 strlen(clli->cfg_instance) + 1;
1202 OBD_ALLOC(inst_name, inst_len);
1203 if (inst_name == NULL)
1204 GOTO(out, rc = -ENOMEM);
1205 sprintf(inst_name, "%s-%s",
1206 lustre_cfg_string(lcfg, 0),
1207 clli->cfg_instance);
1208 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1209 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1210 lcfg->lcfg_command, inst_name);
1213 /* we override the llog's uuid for clients, to insure they
1215 if (clli && clli->cfg_instance &&
1216 lcfg->lcfg_command == LCFG_ATTACH) {
1217 lustre_cfg_bufs_set_string(&bufs, 2,
1218 clli->cfg_uuid.uuid);
1221 * sptlrpc config record, we expect 2 data segments:
1222 * [0]: fs_name/target_name,
1224 * moving them to index [1] and [2], and insert MGC's
1225 * obdname at index [0].
1227 if (clli && clli->cfg_instance == NULL &&
1228 lcfg->lcfg_command == LCFG_SPTLRPC_CONF) {
1229 lustre_cfg_bufs_set(&bufs, 2, bufs.lcfg_buf[1],
1230 bufs.lcfg_buflen[1]);
1231 lustre_cfg_bufs_set(&bufs, 1, bufs.lcfg_buf[0],
1232 bufs.lcfg_buflen[0]);
1233 lustre_cfg_bufs_set_string(&bufs, 0,
1237 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1239 lcfg_new->lcfg_num = lcfg->lcfg_num;
1240 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1242 /* XXX Hack to try to remain binary compatible with
1243 * pre-newconfig logs */
1244 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1245 (lcfg->lcfg_nid >> 32) == 0) {
1246 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1248 lcfg_new->lcfg_nid =
1249 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1250 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1251 lcfg->lcfg_nal, addr,
1252 libcfs_nid2str(lcfg_new->lcfg_nid));
1254 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1257 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1259 rc = class_process_config(lcfg_new);
1260 lustre_cfg_free(lcfg_new);
1263 OBD_FREE(inst_name, inst_len);
1267 CERROR("Unknown llog record type %#x encountered\n",
1273 CERROR("Err %d on cfg command:\n", rc);
1274 class_config_dump_handler(handle, rec, data);
1279 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1280 struct config_llog_instance *cfg)
1282 struct llog_process_cat_data cd = {0, 0};
1283 struct llog_handle *llh;
1287 CDEBUG(D_INFO, "looking up llog %s\n", name);
1288 rc = llog_create(ctxt, &llh, NULL, name);
1292 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1294 GOTO(parse_out, rc);
1296 /* continue processing from where we last stopped to end-of-log */
1298 cd.lpcd_first_idx = cfg->cfg_last_idx;
1299 cd.lpcd_last_idx = 0;
1301 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1303 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1304 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1307 cfg->cfg_last_idx = cd.lpcd_last_idx;
1310 rc2 = llog_close(llh);
1317 int class_config_dump_handler(struct llog_handle * handle,
1318 struct llog_rec_hdr *rec, void *data)
1320 int cfg_len = rec->lrh_len;
1321 char *cfg_buf = (char*) (rec + 1);
1322 char *outstr, *ptr, *end;
1326 OBD_ALLOC(outstr, 256);
1332 if (rec->lrh_type == OBD_CFG_REC) {
1333 struct lustre_cfg *lcfg;
1336 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1339 lcfg = (struct lustre_cfg *)cfg_buf;
1341 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1342 lcfg->lcfg_command);
1343 if (lcfg->lcfg_flags) {
1344 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1347 if (lcfg->lcfg_num) {
1348 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1351 if (lcfg->lcfg_nid) {
1352 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1353 libcfs_nid2str(lcfg->lcfg_nid),
1356 if (lcfg->lcfg_command == LCFG_MARKER) {
1357 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1358 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1359 marker->cm_step, marker->cm_flags,
1360 marker->cm_tgtname, marker->cm_comment);
1362 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1363 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1364 lustre_cfg_string(lcfg, i));
1367 LCONSOLE(D_WARNING, " %s\n", outstr);
1369 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1373 OBD_FREE(outstr, 256);
1377 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1378 struct config_llog_instance *cfg)
1380 struct llog_handle *llh;
1384 LCONSOLE_INFO("Dumping config log %s\n", name);
1386 rc = llog_create(ctxt, &llh, NULL, name);
1390 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1392 GOTO(parse_out, rc);
1394 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1396 rc2 = llog_close(llh);
1400 LCONSOLE_INFO("End config log %s\n", name);
1405 /* Cleanup and detach */
1406 int class_manual_cleanup(struct obd_device *obd)
1409 struct lustre_cfg *lcfg;
1410 struct lustre_cfg_bufs bufs;
1415 CERROR("empty cleanup\n");
1424 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1425 obd->obd_name, flags);
1427 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1428 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1429 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1433 rc = class_process_config(lcfg);
1435 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1439 /* the lcfg is almost the same for both ops */
1440 lcfg->lcfg_command = LCFG_DETACH;
1441 rc = class_process_config(lcfg);
1443 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1445 lustre_cfg_free(lcfg);
1450 * uuid<->export lustre hash operations
1454 uuid_hash(lustre_hash_t *lh, void *key, unsigned mask)
1456 return lh_djb2_hash(((struct obd_uuid *)key)->uuid,
1457 sizeof(((struct obd_uuid *)key)->uuid), mask);
1461 uuid_key(struct hlist_node *hnode)
1463 struct obd_export *exp;
1465 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1467 RETURN(&exp->exp_client_uuid);
1471 * NOTE: It is impossible to find an export that is in failed
1472 * state with this function
1475 uuid_compare(void *key, struct hlist_node *hnode)
1477 struct obd_export *exp;
1480 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1482 RETURN(obd_uuid_equals((struct obd_uuid *)key,&exp->exp_client_uuid) &&
1487 uuid_export_get(struct hlist_node *hnode)
1489 struct obd_export *exp;
1491 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1492 class_export_get(exp);
1498 uuid_export_put(struct hlist_node *hnode)
1500 struct obd_export *exp;
1502 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1503 class_export_put(exp);
1508 static lustre_hash_ops_t uuid_hash_ops = {
1509 .lh_hash = uuid_hash,
1511 .lh_compare = uuid_compare,
1512 .lh_get = uuid_export_get,
1513 .lh_put = uuid_export_put,
1518 * nid<->export hash operations
1522 nid_hash(lustre_hash_t *lh, void *key, unsigned mask)
1524 return lh_djb2_hash(key, sizeof(lnet_nid_t), mask);
1528 nid_key(struct hlist_node *hnode)
1530 struct obd_export *exp;
1532 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1534 RETURN(&exp->exp_connection->c_peer.nid);
1538 * NOTE: It is impossible to find an export that is in failed
1539 * state with this function
1542 nid_compare(void *key, struct hlist_node *hnode)
1544 struct obd_export *exp;
1547 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1549 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1554 nid_export_get(struct hlist_node *hnode)
1556 struct obd_export *exp;
1558 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1559 class_export_get(exp);
1565 nid_export_put(struct hlist_node *hnode)
1567 struct obd_export *exp;
1569 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1570 class_export_put(exp);
1575 static lustre_hash_ops_t nid_hash_ops = {
1576 .lh_hash = nid_hash,
1578 .lh_compare = nid_compare,
1579 .lh_get = nid_export_get,
1580 .lh_put = nid_export_put,
1585 * nid<->nidstats hash operations
1589 nidstats_key(struct hlist_node *hnode)
1591 struct nid_stat *ns;
1593 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1599 nidstats_compare(void *key, struct hlist_node *hnode)
1601 RETURN(*(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key);
1605 nidstats_get(struct hlist_node *hnode)
1607 struct nid_stat *ns;
1609 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1616 nidstats_put(struct hlist_node *hnode)
1618 struct nid_stat *ns;
1620 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1626 static lustre_hash_ops_t nid_stat_hash_ops = {
1627 .lh_hash = nid_hash,
1628 .lh_key = nidstats_key,
1629 .lh_compare = nidstats_compare,
1630 .lh_get = nidstats_get,
1631 .lh_put = nidstats_put,