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);
79 /* returns 0 if this is the first key in the buffer, else 1.
80 valp points to first char after key. */
81 int class_match_param(char *buf, char *key, char **valp)
86 if (memcmp(buf, key, strlen(key)) != 0)
90 *valp = buf + strlen(key);
98 endh is set to next separator */
99 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
105 while (*buf == ',' || *buf == ':')
107 if (*buf == ' ' || *buf == '/' || *buf == '\0')
110 /* nid separators or end of nids */
111 endp = strpbrk(buf, ",: /");
113 endp = buf + strlen(buf);
117 *nid = libcfs_str2nid(buf);
118 if (*nid == LNET_NID_ANY) {
119 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
127 CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
131 EXPORT_SYMBOL(class_find_param);
132 EXPORT_SYMBOL(class_match_param);
133 EXPORT_SYMBOL(class_parse_nid);
135 /********************** class fns **********************/
138 * Create a new device and set the type, name and uuid. If successful, the new
139 * device can be accessed by either name or uuid.
141 int class_attach(struct lustre_cfg *lcfg)
143 struct obd_device *obd = NULL;
144 char *typename, *name, *uuid;
148 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
149 CERROR("No type passed!\n");
152 typename = lustre_cfg_string(lcfg, 1);
154 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
155 CERROR("No name passed!\n");
158 name = lustre_cfg_string(lcfg, 0);
160 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
161 CERROR("No UUID passed!\n");
164 uuid = lustre_cfg_string(lcfg, 2);
166 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
167 MKSTR(typename), MKSTR(name), MKSTR(uuid));
169 obd = class_newdev(typename, name);
171 /* Already exists or out of obds */
174 CERROR("Cannot create device %s of type %s : %d\n",
178 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
180 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
181 "obd %p obd_magic %08X != %08X\n",
182 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
183 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
184 obd, obd->obd_name, name);
186 rwlock_init(&obd->obd_pool_lock);
187 obd->obd_pool_limit = 0;
188 obd->obd_pool_slv = 0;
190 CFS_INIT_LIST_HEAD(&obd->obd_exports);
191 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
192 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
193 spin_lock_init(&obd->obd_nid_lock);
194 spin_lock_init(&obd->obd_dev_lock);
195 sema_init(&obd->obd_dev_sem, 1);
196 spin_lock_init(&obd->obd_osfs_lock);
197 /* obd->obd_osfs_age must be set to a value in the distant
198 * past to guarantee a fresh statfs is fetched on mount. */
199 obd->obd_osfs_age = cfs_time_shift_64(-1000);
201 /* XXX belongs in setup not attach */
203 cfs_init_timer(&obd->obd_recovery_timer);
204 spin_lock_init(&obd->obd_processing_task_lock);
205 cfs_waitq_init(&obd->obd_next_transno_waitq);
206 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
207 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
208 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
209 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
211 llog_group_init(&obd->obd_olg, FILTER_GROUP_LLOG);
213 spin_lock_init(&obd->obd_uncommitted_replies_lock);
214 CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
217 if (len >= sizeof(obd->obd_uuid)) {
218 CERROR("uuid must be < %d bytes long\n",
219 (int)sizeof(obd->obd_uuid));
220 GOTO(out, rc = -EINVAL);
222 memcpy(obd->obd_uuid.uuid, uuid, len);
225 if (OBP(obd, attach)) {
226 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
228 GOTO(out, rc = -EINVAL);
231 /* Detach drops this */
232 spin_lock(&obd->obd_dev_lock);
233 atomic_set(&obd->obd_refcount, 1);
234 spin_unlock(&obd->obd_dev_lock);
235 lu_ref_init(&obd->obd_reference);
236 lu_ref_add(&obd->obd_reference, "attach", obd);
238 obd->obd_attached = 1;
239 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
240 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
244 class_release_dev(obd);
249 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
252 struct obd_export *exp;
255 LASSERT(obd != NULL);
256 LASSERTF(obd == class_num2obd(obd->obd_minor),
257 "obd %p != obd_devs[%d] %p\n",
258 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
259 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
260 "obd %p obd_magic %08x != %08x\n",
261 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
263 /* have we attached a type to this device? */
264 if (!obd->obd_attached) {
265 CERROR("Device %d not attached\n", obd->obd_minor);
269 if (obd->obd_set_up) {
270 CERROR("Device %d already setup (type %s)\n",
271 obd->obd_minor, obd->obd_type->typ_name);
275 /* is someone else setting us up right now? (attach inits spinlock) */
276 spin_lock(&obd->obd_dev_lock);
277 if (obd->obd_starting) {
278 spin_unlock(&obd->obd_dev_lock);
279 CERROR("Device %d setup in progress (type %s)\n",
280 obd->obd_minor, obd->obd_type->typ_name);
283 /* just leave this on forever. I can't use obd_set_up here because
284 other fns check that status, and we're not actually set up yet. */
285 obd->obd_starting = 1;
286 obd->obd_uuid_hash = NULL;
287 obd->obd_nid_hash = NULL;
288 obd->obd_nid_stats_hash = NULL;
289 spin_unlock(&obd->obd_dev_lock);
291 /* create an uuid-export lustre hash */
292 obd->obd_uuid_hash = lustre_hash_init("UUID_HASH", 128, 128,
294 if (!obd->obd_uuid_hash)
295 GOTO(err_hash, -ENOMEM);
297 /* create a nid-export lustre hash */
298 obd->obd_nid_hash = lustre_hash_init("NID_HASH", 128, 128,
300 if (!obd->obd_nid_hash)
301 GOTO(err_hash, -ENOMEM);
303 /* create a nid-stats lustre hash */
304 obd->obd_nid_stats_hash = lustre_hash_init("NID_STATS", 128, 128,
305 &nid_stat_hash_ops, 0);
306 if (!obd->obd_nid_stats_hash)
307 GOTO(err_hash, -ENOMEM);
309 exp = class_new_export(obd, &obd->obd_uuid);
311 RETURN(PTR_ERR(exp));
313 obd->obd_self_export = exp;
314 list_del_init(&exp->exp_obd_chain_timed);
315 class_export_put(exp);
317 err = obd_setup(obd, lcfg);
323 spin_lock(&obd->obd_dev_lock);
324 /* cleanup drops this */
325 class_incref(obd, "setup", obd);
326 spin_unlock(&obd->obd_dev_lock);
328 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
329 obd->obd_name, obd->obd_uuid.uuid);
334 class_unlink_export(obd->obd_self_export);
335 obd->obd_self_export = NULL;
337 lustre_hash_exit(obd->obd_uuid_hash);
338 lustre_hash_exit(obd->obd_nid_hash);
339 lustre_hash_exit(obd->obd_nid_stats_hash);
340 obd->obd_starting = 0;
341 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
345 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
349 if (obd->obd_set_up) {
350 CERROR("OBD device %d still set up\n", obd->obd_minor);
354 spin_lock(&obd->obd_dev_lock);
355 if (!obd->obd_attached) {
356 spin_unlock(&obd->obd_dev_lock);
357 CERROR("OBD device %d not attached\n", obd->obd_minor);
360 obd->obd_attached = 0;
361 spin_unlock(&obd->obd_dev_lock);
363 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
364 obd->obd_name, obd->obd_uuid.uuid);
366 class_decref(obd, "attach", obd);
368 /* not strictly necessary, but cleans up eagerly */
369 obd_zombie_impexp_cull();
374 static void dump_exports(struct obd_device *obd)
376 struct obd_export *exp, *n;
378 list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
379 struct ptlrpc_reply_state *rs;
380 struct ptlrpc_reply_state *first_reply = NULL;
383 list_for_each_entry (rs, &exp->exp_outstanding_replies,
390 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
391 obd->obd_name, exp, exp->exp_client_uuid.uuid,
392 obd_export_nid2str(exp),
393 atomic_read(&exp->exp_refcount),
394 exp->exp_failed, nreplies, first_reply,
395 nreplies > 3 ? "..." : "");
399 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
405 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
407 if (!obd->obd_set_up) {
408 CERROR("Device %d not setup\n", obd->obd_minor);
412 spin_lock(&obd->obd_dev_lock);
413 if (obd->obd_stopping) {
414 spin_unlock(&obd->obd_dev_lock);
415 CERROR("OBD %d already stopping\n", obd->obd_minor);
418 /* Leave this on forever */
419 obd->obd_stopping = 1;
420 spin_unlock(&obd->obd_dev_lock);
422 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
423 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
429 LCONSOLE_WARN("Failing over %s\n",
432 obd->obd_no_transno = 1;
433 obd->obd_no_recov = 1;
434 /* Set the obd readonly if we can */
435 if (OBP(obd, iocontrol))
436 obd_iocontrol(OBD_IOC_SET_READONLY,
437 obd->obd_self_export,
441 CERROR("unrecognised flag '%c'\n",
446 /* The three references that should be remaining are the
447 * obd_self_export and the attach and setup references. */
448 if (atomic_read(&obd->obd_refcount) > 3) {
449 #if 0 /* We should never fail to cleanup with mountconf */
450 if (!(obd->obd_fail || obd->obd_force)) {
451 CERROR("OBD %s is still busy with %d references\n"
452 "You should stop active file system users,"
453 " or use the --force option to cleanup.\n",
454 obd->obd_name, atomic_read(&obd->obd_refcount));
456 /* Allow a failed cleanup to try again. */
457 obd->obd_stopping = 0;
460 /* refcounf - 3 might be the number of real exports
461 (excluding self export). But class_incref is called
462 by other things as well, so don't count on it. */
463 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
464 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
466 class_disconnect_exports(obd);
468 LASSERT(obd->obd_self_export);
470 /* destroy an uuid-export hash body */
471 lustre_hash_exit(obd->obd_uuid_hash);
473 /* destroy a nid-export hash body */
474 lustre_hash_exit(obd->obd_nid_hash);
476 /* destroy a nid-stats hash body */
477 lustre_hash_exit(obd->obd_nid_stats_hash);
479 /* Precleanup, we must make sure all exports get destroyed. */
480 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
482 CERROR("Precleanup %s returned %d\n",
484 class_decref(obd, "setup", obd);
489 struct obd_device *class_incref(struct obd_device *obd,
490 const char *scope, const void *source)
492 lu_ref_add_atomic(&obd->obd_reference, scope, source);
493 atomic_inc(&obd->obd_refcount);
494 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
495 atomic_read(&obd->obd_refcount));
500 void class_decref(struct obd_device *obd, const char *scope, const void *source)
505 spin_lock(&obd->obd_dev_lock);
506 atomic_dec(&obd->obd_refcount);
507 refs = atomic_read(&obd->obd_refcount);
508 spin_unlock(&obd->obd_dev_lock);
509 lu_ref_del(&obd->obd_reference, scope, source);
511 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
513 if ((refs == 1) && obd->obd_stopping) {
514 /* All exports have been destroyed; there should
515 be no more in-progress ops by this point.*/
517 spin_lock(&obd->obd_self_export->exp_lock);
518 obd->obd_self_export->exp_flags |=
519 (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
520 (obd->obd_force ? OBD_OPT_FORCE : 0);
521 spin_unlock(&obd->obd_self_export->exp_lock);
523 /* note that we'll recurse into class_decref again */
524 class_unlink_export(obd->obd_self_export);
529 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
530 obd->obd_name, obd->obd_uuid.uuid);
531 LASSERT(!obd->obd_attached);
532 if (obd->obd_stopping) {
533 /* If we're not stopping, we were never set up */
534 err = obd_cleanup(obd);
536 CERROR("Cleanup %s returned %d\n",
539 if (OBP(obd, detach)) {
540 err = OBP(obd,detach)(obd);
542 CERROR("Detach returned %d\n", err);
544 class_release_dev(obd);
548 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
550 struct obd_import *imp;
551 struct obd_uuid uuid;
555 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
556 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
557 CERROR("invalid conn_uuid\n");
560 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
561 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
562 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
563 CERROR("can't add connection on non-client dev\n");
567 imp = obd->u.cli.cl_import;
569 CERROR("try to add conn on immature client dev\n");
573 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
574 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
579 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
581 struct obd_import *imp;
582 struct obd_uuid uuid;
586 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
587 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
588 CERROR("invalid conn_uuid\n");
591 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
592 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
593 CERROR("can't del connection on non-client dev\n");
597 imp = obd->u.cli.cl_import;
599 CERROR("try to del conn on immature client dev\n");
603 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
604 rc = obd_del_conn(imp, &uuid);
609 CFS_LIST_HEAD(lustre_profile_list);
611 struct lustre_profile *class_get_profile(const char * prof)
613 struct lustre_profile *lprof;
616 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
617 if (!strcmp(lprof->lp_profile, prof)) {
624 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
625 int mdclen, char *mdc)
627 struct lustre_profile *lprof;
631 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
633 OBD_ALLOC(lprof, sizeof(*lprof));
636 CFS_INIT_LIST_HEAD(&lprof->lp_list);
638 LASSERT(proflen == (strlen(prof) + 1));
639 OBD_ALLOC(lprof->lp_profile, proflen);
640 if (lprof->lp_profile == NULL)
641 GOTO(out, err = -ENOMEM);
642 memcpy(lprof->lp_profile, prof, proflen);
644 LASSERT(osclen == (strlen(osc) + 1));
645 OBD_ALLOC(lprof->lp_dt, osclen);
646 if (lprof->lp_dt == NULL)
647 GOTO(out, err = -ENOMEM);
648 memcpy(lprof->lp_dt, osc, osclen);
651 LASSERT(mdclen == (strlen(mdc) + 1));
652 OBD_ALLOC(lprof->lp_md, mdclen);
653 if (lprof->lp_md == NULL)
654 GOTO(out, err = -ENOMEM);
655 memcpy(lprof->lp_md, mdc, mdclen);
658 list_add(&lprof->lp_list, &lustre_profile_list);
663 OBD_FREE(lprof->lp_md, mdclen);
665 OBD_FREE(lprof->lp_dt, osclen);
666 if (lprof->lp_profile)
667 OBD_FREE(lprof->lp_profile, proflen);
668 OBD_FREE(lprof, sizeof(*lprof));
672 void class_del_profile(const char *prof)
674 struct lustre_profile *lprof;
677 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
679 lprof = class_get_profile(prof);
681 list_del(&lprof->lp_list);
682 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
683 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
685 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
686 OBD_FREE(lprof, sizeof *lprof);
692 void class_del_profiles(void)
694 struct lustre_profile *lprof, *n;
697 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
698 list_del(&lprof->lp_list);
699 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
700 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
702 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
703 OBD_FREE(lprof, sizeof *lprof);
708 /* We can't call ll_process_config directly because it lives in a module that
709 must be loaded after this one. */
710 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
712 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
714 client_process_config = cpc;
716 EXPORT_SYMBOL(lustre_register_client_process_config);
718 int class_process_config(struct lustre_cfg *lcfg)
720 struct obd_device *obd;
723 LASSERT(lcfg && !IS_ERR(lcfg));
724 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
726 /* Commands that don't need a device */
727 switch(lcfg->lcfg_command) {
729 err = class_attach(lcfg);
732 case LCFG_ADD_UUID: {
733 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
734 " (%s)\n", lustre_cfg_string(lcfg, 1),
735 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
737 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
740 case LCFG_DEL_UUID: {
741 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
742 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
743 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
745 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
748 case LCFG_MOUNTOPT: {
749 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
750 lustre_cfg_string(lcfg, 1),
751 lustre_cfg_string(lcfg, 2),
752 lustre_cfg_string(lcfg, 3));
753 /* set these mount options somewhere, so ll_fill_super
755 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
756 lustre_cfg_string(lcfg, 1),
757 LUSTRE_CFG_BUFLEN(lcfg, 2),
758 lustre_cfg_string(lcfg, 2),
759 LUSTRE_CFG_BUFLEN(lcfg, 3),
760 lustre_cfg_string(lcfg, 3));
763 case LCFG_DEL_MOUNTOPT: {
764 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
765 lustre_cfg_string(lcfg, 1));
766 class_del_profile(lustre_cfg_string(lcfg, 1));
769 case LCFG_SET_TIMEOUT: {
770 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
771 obd_timeout, lcfg->lcfg_num);
772 obd_timeout = max(lcfg->lcfg_num, 1U);
775 case LCFG_SET_UPCALL: {
776 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
777 /* COMPAT_146 Don't fail on old configs */
781 struct cfg_marker *marker;
782 marker = lustre_cfg_buf(lcfg, 1);
783 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
784 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
788 /* llite has no obd */
789 if ((class_match_param(lustre_cfg_string(lcfg, 1),
790 PARAM_LLITE, 0) == 0) &&
791 client_process_config) {
792 err = (*client_process_config)(lcfg);
800 /* Commands that require a device */
801 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
803 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
804 CERROR("this lcfg command requires a device name\n");
806 CERROR("no device for: %s\n",
807 lustre_cfg_string(lcfg, 0));
809 GOTO(out, err = -EINVAL);
812 switch(lcfg->lcfg_command) {
814 err = class_setup(obd, lcfg);
818 err = class_detach(obd, lcfg);
822 err = class_cleanup(obd, lcfg);
825 case LCFG_ADD_CONN: {
826 err = class_add_conn(obd, lcfg);
829 case LCFG_DEL_CONN: {
830 err = class_del_conn(obd, lcfg);
833 case LCFG_POOL_NEW: {
834 err = obd_pool_new(obd, lustre_cfg_string(lcfg, 2));
838 case LCFG_POOL_ADD: {
839 err = obd_pool_add(obd, lustre_cfg_string(lcfg, 2),
840 lustre_cfg_string(lcfg, 3));
844 case LCFG_POOL_REM: {
845 err = obd_pool_rem(obd, lustre_cfg_string(lcfg, 2),
846 lustre_cfg_string(lcfg, 3));
850 case LCFG_POOL_DEL: {
851 err = obd_pool_del(obd, lustre_cfg_string(lcfg, 2));
856 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
862 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
863 CWARN("Ignoring error %d on optional command %#x\n", err,
870 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
871 struct lustre_cfg *lcfg, void *data)
874 struct lprocfs_vars *var;
876 int i, keylen, vallen;
877 int matched = 0, j = 0;
881 if (lcfg->lcfg_command != LCFG_PARAM) {
882 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
886 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
887 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
888 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
889 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
890 key = lustre_cfg_buf(lcfg, i);
891 /* Strip off prefix */
892 class_match_param(key, prefix, &key);
893 sval = strchr(key, '=');
894 if (!sval || (*(sval + 1) == 0)) {
895 CERROR("Can't parse param %s (missing '=')\n", key);
896 /* rc = -EINVAL; continue parsing other params */
901 vallen = strlen(sval);
904 /* Search proc entries */
905 while (lvars[j].name) {
907 if (class_match_param(key, (char *)var->name, 0) == 0 &&
908 keylen == strlen(var->name)) {
911 if (var->write_fptr) {
915 rc = (var->write_fptr)(NULL, sval,
920 CERROR("writing proc entry %s err %d\n",
927 /* If the prefix doesn't match, return error so we
928 can pass it down the stack */
929 if (strnchr(key, keylen, '.'))
931 CERROR("%s: unknown param %s\n",
932 (char *)lustre_cfg_string(lcfg, 0), key);
933 /* rc = -EINVAL; continue parsing other params */
935 LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
936 lustre_cfg_string(lcfg, 0),
937 (int)strlen(prefix) - 1, prefix,
938 (int)(sval - key - 1), key, sval);
946 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
947 /* Don't throw config error */
952 int class_config_dump_handler(struct llog_handle * handle,
953 struct llog_rec_hdr *rec, void *data);
956 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
958 #define lustre_check_exclusion(a,b) 0
961 static int class_config_llog_handler(struct llog_handle * handle,
962 struct llog_rec_hdr *rec, void *data)
964 struct config_llog_instance *clli = data;
965 int cfg_len = rec->lrh_len;
966 char *cfg_buf = (char*) (rec + 1);
970 //class_config_dump_handler(handle, rec, data);
972 switch (rec->lrh_type) {
974 struct lustre_cfg *lcfg, *lcfg_new;
975 struct lustre_cfg_bufs bufs;
976 char *inst_name = NULL;
978 int inst = 0, swab = 0;
980 lcfg = (struct lustre_cfg *)cfg_buf;
981 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION)) {
982 lustre_swab_lustre_cfg(lcfg);
986 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
990 /* Figure out config state info */
991 if (lcfg->lcfg_command == LCFG_MARKER) {
992 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
993 lustre_swab_cfg_marker(marker, swab,
994 LUSTRE_CFG_BUFLEN(lcfg, 1));
995 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
996 clli->cfg_flags, marker->cm_flags);
997 if (marker->cm_flags & CM_START) {
998 /* all previous flags off */
999 clli->cfg_flags = CFG_F_MARKER;
1000 if (marker->cm_flags & CM_SKIP) {
1001 clli->cfg_flags |= CFG_F_SKIP;
1002 CDEBUG(D_CONFIG, "SKIP #%d\n",
1004 } else if ((marker->cm_flags & CM_EXCLUDE) ||
1005 lustre_check_exclusion(clli->cfg_sb,
1006 marker->cm_tgtname)) {
1007 clli->cfg_flags |= CFG_F_EXCLUDE;
1008 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
1011 } else if (marker->cm_flags & CM_END) {
1012 clli->cfg_flags = 0;
1015 /* A config command without a start marker before it is
1016 illegal (post 146) */
1017 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
1018 !(clli->cfg_flags & CFG_F_MARKER) &&
1019 (lcfg->lcfg_command != LCFG_MARKER)) {
1020 CWARN("Config not inside markers, ignoring! "
1021 "(inst: %s, uuid: %s, flags: %#x)\n",
1022 clli->cfg_instance ? clli->cfg_instance : "<null>",
1023 clli->cfg_uuid.uuid, clli->cfg_flags);
1024 clli->cfg_flags |= CFG_F_SKIP;
1026 if (clli->cfg_flags & CFG_F_SKIP) {
1027 CDEBUG(D_CONFIG, "skipping %#x\n",
1030 /* No processing! */
1034 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
1035 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
1036 /* Add inactive instead */
1037 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
1039 lustre_cfg_bufs_init(&bufs, lcfg);
1041 if (clli && clli->cfg_instance &&
1042 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1044 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1045 strlen(clli->cfg_instance) + 1;
1046 OBD_ALLOC(inst_name, inst_len);
1047 if (inst_name == NULL)
1048 GOTO(out, rc = -ENOMEM);
1049 sprintf(inst_name, "%s-%s",
1050 lustre_cfg_string(lcfg, 0),
1051 clli->cfg_instance);
1052 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1053 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1054 lcfg->lcfg_command, inst_name);
1057 /* we override the llog's uuid for clients, to insure they
1059 if (clli && clli->cfg_instance &&
1060 lcfg->lcfg_command == LCFG_ATTACH) {
1061 lustre_cfg_bufs_set_string(&bufs, 2,
1062 clli->cfg_uuid.uuid);
1065 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1067 lcfg_new->lcfg_num = lcfg->lcfg_num;
1068 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1070 /* XXX Hack to try to remain binary compatible with
1071 * pre-newconfig logs */
1072 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1073 (lcfg->lcfg_nid >> 32) == 0) {
1074 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1076 lcfg_new->lcfg_nid =
1077 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1078 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1079 lcfg->lcfg_nal, addr,
1080 libcfs_nid2str(lcfg_new->lcfg_nid));
1082 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1085 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1087 rc = class_process_config(lcfg_new);
1088 lustre_cfg_free(lcfg_new);
1091 OBD_FREE(inst_name, inst_len);
1095 CERROR("Unknown llog record type %#x encountered\n",
1101 CERROR("Err %d on cfg command:\n", rc);
1102 class_config_dump_handler(handle, rec, data);
1107 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1108 struct config_llog_instance *cfg)
1110 struct llog_process_cat_data cd = {0, 0};
1111 struct llog_handle *llh;
1115 CDEBUG(D_INFO, "looking up llog %s\n", name);
1116 rc = llog_create(ctxt, &llh, NULL, name);
1120 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1122 GOTO(parse_out, rc);
1124 /* continue processing from where we last stopped to end-of-log */
1126 cd.lpcd_first_idx = cfg->cfg_last_idx;
1127 cd.lpcd_last_idx = 0;
1129 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1131 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1132 cd.lpcd_first_idx + 1, cd.lpcd_last_idx, rc);
1135 cfg->cfg_last_idx = cd.lpcd_last_idx;
1138 rc2 = llog_close(llh);
1145 int class_config_dump_handler(struct llog_handle * handle,
1146 struct llog_rec_hdr *rec, void *data)
1148 int cfg_len = rec->lrh_len;
1149 char *cfg_buf = (char*) (rec + 1);
1150 char *outstr, *ptr, *end;
1154 OBD_ALLOC(outstr, 256);
1160 if (rec->lrh_type == OBD_CFG_REC) {
1161 struct lustre_cfg *lcfg;
1164 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1167 lcfg = (struct lustre_cfg *)cfg_buf;
1169 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1170 lcfg->lcfg_command);
1171 if (lcfg->lcfg_flags) {
1172 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1175 if (lcfg->lcfg_num) {
1176 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1179 if (lcfg->lcfg_nid) {
1180 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1181 libcfs_nid2str(lcfg->lcfg_nid),
1184 if (lcfg->lcfg_command == LCFG_MARKER) {
1185 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1186 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1187 marker->cm_step, marker->cm_flags,
1188 marker->cm_tgtname, marker->cm_comment);
1190 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1191 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1192 lustre_cfg_string(lcfg, i));
1195 LCONSOLE(D_WARNING, " %s\n", outstr);
1197 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1201 OBD_FREE(outstr, 256);
1205 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1206 struct config_llog_instance *cfg)
1208 struct llog_handle *llh;
1212 LCONSOLE_INFO("Dumping config log %s\n", name);
1214 rc = llog_create(ctxt, &llh, NULL, name);
1218 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1220 GOTO(parse_out, rc);
1222 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1224 rc2 = llog_close(llh);
1228 LCONSOLE_INFO("End config log %s\n", name);
1233 /* Cleanup and detach */
1234 int class_manual_cleanup(struct obd_device *obd)
1236 struct lustre_cfg *lcfg;
1237 struct lustre_cfg_bufs bufs;
1243 CERROR("empty cleanup\n");
1252 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1253 obd->obd_name, flags);
1255 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1256 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1257 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1259 rc = class_process_config(lcfg);
1261 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1265 /* the lcfg is almost the same for both ops */
1266 lcfg->lcfg_command = LCFG_DETACH;
1267 rc = class_process_config(lcfg);
1269 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1271 lustre_cfg_free(lcfg);
1276 * uuid<->export lustre hash operations
1280 uuid_hash(lustre_hash_t *lh, void *key, unsigned mask)
1282 return lh_djb2_hash(((struct obd_uuid *)key)->uuid,
1283 sizeof(((struct obd_uuid *)key)->uuid), mask);
1287 uuid_key(struct hlist_node *hnode)
1289 struct obd_export *exp;
1291 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1293 RETURN(&exp->exp_client_uuid);
1297 * NOTE: It is impossible to find an export that is in failed
1298 * state with this function
1301 uuid_compare(void *key, struct hlist_node *hnode)
1303 struct obd_export *exp;
1306 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1308 RETURN(obd_uuid_equals((struct obd_uuid *)key,&exp->exp_client_uuid) &&
1313 uuid_export_get(struct hlist_node *hnode)
1315 struct obd_export *exp;
1317 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1318 class_export_get(exp);
1324 uuid_export_put(struct hlist_node *hnode)
1326 struct obd_export *exp;
1328 exp = hlist_entry(hnode, struct obd_export, exp_uuid_hash);
1329 class_export_put(exp);
1334 static lustre_hash_ops_t uuid_hash_ops = {
1335 .lh_hash = uuid_hash,
1337 .lh_compare = uuid_compare,
1338 .lh_get = uuid_export_get,
1339 .lh_put = uuid_export_put,
1344 * nid<->export hash operations
1348 nid_hash(lustre_hash_t *lh, void *key, unsigned mask)
1350 return lh_djb2_hash(key, sizeof(lnet_nid_t), mask);
1354 nid_key(struct hlist_node *hnode)
1356 struct obd_export *exp;
1358 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1360 RETURN(&exp->exp_connection->c_peer.nid);
1364 * NOTE: It is impossible to find an export that is in failed
1365 * state with this function
1368 nid_compare(void *key, struct hlist_node *hnode)
1370 struct obd_export *exp;
1373 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1375 RETURN(exp->exp_connection->c_peer.nid == *(lnet_nid_t *)key &&
1380 nid_export_get(struct hlist_node *hnode)
1382 struct obd_export *exp;
1384 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1385 class_export_get(exp);
1391 nid_export_put(struct hlist_node *hnode)
1393 struct obd_export *exp;
1395 exp = hlist_entry(hnode, struct obd_export, exp_nid_hash);
1396 class_export_put(exp);
1401 static lustre_hash_ops_t nid_hash_ops = {
1402 .lh_hash = nid_hash,
1404 .lh_compare = nid_compare,
1405 .lh_get = nid_export_get,
1406 .lh_put = nid_export_put,
1411 * nid<->nidstats hash operations
1415 nidstats_key(struct hlist_node *hnode)
1417 struct nid_stat *ns;
1419 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1425 nidstats_compare(void *key, struct hlist_node *hnode)
1427 RETURN(*(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key);
1431 nidstats_get(struct hlist_node *hnode)
1433 struct nid_stat *ns;
1435 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1436 ns->nid_exp_ref_count++;
1442 nidstats_put(struct hlist_node *hnode)
1444 struct nid_stat *ns;
1446 ns = hlist_entry(hnode, struct nid_stat, nid_hash);
1447 ns->nid_exp_ref_count--;
1452 static lustre_hash_ops_t nid_stat_hash_ops = {
1453 .lh_hash = nid_hash,
1454 .lh_key = nidstats_key,
1455 .lh_compare = nidstats_compare,
1456 .lh_get = nidstats_get,
1457 .lh_put = nidstats_put,