1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (c) 2001-2006 Cluster File Systems, Inc.
6 * This file is part of the Lustre file system, http://www.lustre.org
7 * Lustre is a trademark of Cluster File Systems, Inc.
9 * You may have signed or agreed to another license before downloading
10 * this software. If so, you are bound by the terms and conditions
11 * of that agreement, and the following does not apply to you. See the
12 * LICENSE file included with this distribution for more information.
14 * If you did not agree to a different license, then this copy of Lustre
15 * is open source software; you can redistribute it and/or modify it
16 * under the terms of version 2 of the GNU General Public License as
17 * published by the Free Software Foundation.
19 * In either case, Lustre is distributed in the hope that it will be
20 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
21 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * license text for more details.
28 #define DEBUG_SUBSYSTEM S_CLASS
30 #include <obd_class.h>
31 #include <linux/string.h>
33 #include <liblustre.h>
34 #include <obd_class.h>
37 #include <lustre_log.h>
38 #include <lprocfs_status.h>
39 #include <libcfs/list.h>
40 #include <lustre_param.h>
41 #include <class_hash.h>
43 extern struct lustre_hash_operations uuid_hash_operations;
44 extern struct lustre_hash_operations nid_hash_operations;
46 /*********** string parsing utils *********/
48 /* returns 0 if we find this key in the buffer, else 1 */
49 int class_find_param(char *buf, char *key, char **valp)
56 if ((ptr = strstr(buf, key)) == NULL)
60 *valp = ptr + strlen(key);
65 /* returns 0 if this is the first key in the buffer, else 1.
66 valp points to first char after key. */
67 int class_match_param(char *buf, char *key, char **valp)
72 if (memcmp(buf, key, strlen(key)) != 0)
76 *valp = buf + strlen(key);
84 endh is set to next separator */
85 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
91 while (*buf == ',' || *buf == ':')
93 if (*buf == ' ' || *buf == '/' || *buf == '\0')
96 /* nid separators or end of nids */
97 endp = strpbrk(buf, ",: /");
99 endp = buf + strlen(buf);
103 *nid = libcfs_str2nid(buf);
104 if (*nid == LNET_NID_ANY) {
105 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
113 CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
117 EXPORT_SYMBOL(class_find_param);
118 EXPORT_SYMBOL(class_match_param);
119 EXPORT_SYMBOL(class_parse_nid);
121 /********************** class fns **********************/
124 * Create a new device and set the type, name and uuid. If successful, the new
125 * device can be accessed by either name or uuid.
127 int class_attach(struct lustre_cfg *lcfg)
129 struct obd_device *obd = NULL;
130 char *typename, *name, *uuid;
134 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
135 CERROR("No type passed!\n");
138 typename = lustre_cfg_string(lcfg, 1);
140 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
141 CERROR("No name passed!\n");
144 name = lustre_cfg_string(lcfg, 0);
146 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
147 CERROR("No UUID passed!\n");
150 uuid = lustre_cfg_string(lcfg, 2);
152 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
153 MKSTR(typename), MKSTR(name), MKSTR(uuid));
155 obd = class_newdev(typename, name);
157 /* Already exists or out of obds */
160 CERROR("Cannot create device %s of type %s : %d\n",
164 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
166 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
167 "obd %p obd_magic %08X != %08X\n",
168 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
169 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
170 obd, obd->obd_name, name);
172 rwlock_init(&obd->obd_pool_lock);
173 obd->obd_pool_limit = 0;
174 obd->obd_pool_slv = 0;
176 CFS_INIT_LIST_HEAD(&obd->obd_exports);
177 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
178 CFS_INIT_LIST_HEAD(&obd->obd_nid_stats);
179 spin_lock_init(&obd->obd_nid_lock);
180 spin_lock_init(&obd->obd_dev_lock);
181 sema_init(&obd->obd_dev_sem, 1);
182 spin_lock_init(&obd->obd_osfs_lock);
183 /* obd->obd_osfs_age must be set to a value in the distant
184 * past to guarantee a fresh statfs is fetched on mount. */
185 obd->obd_osfs_age = cfs_time_shift_64(-1000);
187 /* XXX belongs in setup not attach */
189 cfs_init_timer(&obd->obd_recovery_timer);
190 spin_lock_init(&obd->obd_processing_task_lock);
191 cfs_waitq_init(&obd->obd_next_transno_waitq);
192 cfs_waitq_init(&obd->obd_evict_inprogress_waitq);
193 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
194 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
195 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
197 llog_group_init(&obd->obd_olg, OBD_LLOG_GROUP);
199 spin_lock_init(&obd->obd_uncommitted_replies_lock);
200 CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
203 if (len >= sizeof(obd->obd_uuid)) {
204 CERROR("uuid must be < %d bytes long\n",
205 (int)sizeof(obd->obd_uuid));
206 GOTO(out, rc = -EINVAL);
208 memcpy(obd->obd_uuid.uuid, uuid, len);
211 if (OBP(obd, attach)) {
212 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
214 GOTO(out, rc = -EINVAL);
217 /* Detach drops this */
218 spin_lock(&obd->obd_dev_lock);
219 atomic_set(&obd->obd_refcount, 1);
220 spin_unlock(&obd->obd_dev_lock);
222 obd->obd_attached = 1;
223 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
224 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
228 class_release_dev(obd);
233 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
236 struct obd_export *exp;
239 LASSERT(obd != NULL);
240 LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n",
241 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
242 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n",
243 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
245 /* have we attached a type to this device? */
246 if (!obd->obd_attached) {
247 CERROR("Device %d not attached\n", obd->obd_minor);
251 if (obd->obd_set_up) {
252 CERROR("Device %d already setup (type %s)\n",
253 obd->obd_minor, obd->obd_type->typ_name);
257 /* is someone else setting us up right now? (attach inits spinlock) */
258 spin_lock(&obd->obd_dev_lock);
259 if (obd->obd_starting) {
260 spin_unlock(&obd->obd_dev_lock);
261 CERROR("Device %d setup in progress (type %s)\n",
262 obd->obd_minor, obd->obd_type->typ_name);
265 /* just leave this on forever. I can't use obd_set_up here because
266 other fns check that status, and we're not actually set up yet. */
267 obd->obd_starting = 1;
268 spin_unlock(&obd->obd_dev_lock);
270 /* create an uuid-export hash body */
271 err = lustre_hash_init(&obd->obd_uuid_hash_body, "UUID_HASH",
272 128, &uuid_hash_operations);
276 /* create a nid-export hash body */
277 err = lustre_hash_init(&obd->obd_nid_hash_body, "NID_HASH",
278 128, &nid_hash_operations);
282 /* create a nid-stats hash body */
283 err = lustre_hash_init(&obd->obd_nid_stats_hash_body, "NID_STATS",
284 128, &nid_stat_hash_operations);
288 exp = class_new_export(obd, &obd->obd_uuid);
290 RETURN(PTR_ERR(exp));
292 obd->obd_self_export = exp;
293 list_del_init(&exp->exp_obd_chain_timed);
294 class_export_put(exp);
296 err = obd_setup(obd, lcfg);
302 spin_lock(&obd->obd_dev_lock);
303 /* cleanup drops this */
305 spin_unlock(&obd->obd_dev_lock);
307 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
308 obd->obd_name, obd->obd_uuid.uuid);
313 class_unlink_export(obd->obd_self_export);
314 obd->obd_self_export = NULL;
316 lustre_hash_exit(&obd->obd_uuid_hash_body);
317 lustre_hash_exit(&obd->obd_nid_hash_body);
318 lustre_hash_exit(&obd->obd_nid_stats_hash_body);
319 obd->obd_starting = 0;
320 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
324 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
328 if (obd->obd_set_up) {
329 CERROR("OBD device %d still set up\n", obd->obd_minor);
333 spin_lock(&obd->obd_dev_lock);
334 if (!obd->obd_attached) {
335 spin_unlock(&obd->obd_dev_lock);
336 CERROR("OBD device %d not attached\n", obd->obd_minor);
339 obd->obd_attached = 0;
340 spin_unlock(&obd->obd_dev_lock);
342 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
343 obd->obd_name, obd->obd_uuid.uuid);
347 /* not strictly necessary, but cleans up eagerly */
348 obd_zombie_impexp_cull();
353 static void dump_exports(struct obd_device *obd)
355 struct obd_export *exp, *n;
357 list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
358 struct ptlrpc_reply_state *rs;
359 struct ptlrpc_reply_state *first_reply = NULL;
362 list_for_each_entry (rs, &exp->exp_outstanding_replies,
369 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
370 obd->obd_name, exp, exp->exp_client_uuid.uuid,
371 obd_export_nid2str(exp),
372 atomic_read(&exp->exp_refcount),
373 exp->exp_failed, nreplies, first_reply,
374 nreplies > 3 ? "..." : "");
378 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
384 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
386 if (!obd->obd_set_up) {
387 CERROR("Device %d not setup\n", obd->obd_minor);
391 spin_lock(&obd->obd_dev_lock);
392 if (obd->obd_stopping) {
393 spin_unlock(&obd->obd_dev_lock);
394 CERROR("OBD %d already stopping\n", obd->obd_minor);
397 /* Leave this on forever */
398 obd->obd_stopping = 1;
399 spin_unlock(&obd->obd_dev_lock);
401 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
402 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
408 LCONSOLE_WARN("Failing over %s\n",
411 obd->obd_no_transno = 1;
412 obd->obd_no_recov = 1;
413 /* Set the obd readonly if we can */
414 if (OBP(obd, iocontrol))
415 obd_iocontrol(OBD_IOC_SET_READONLY,
416 obd->obd_self_export,
420 CERROR("unrecognised flag '%c'\n",
425 /* The three references that should be remaining are the
426 * obd_self_export and the attach and setup references. */
427 if (atomic_read(&obd->obd_refcount) > 3) {
428 #if 0 /* We should never fail to cleanup with mountconf */
429 if (!(obd->obd_fail || obd->obd_force)) {
430 CERROR("OBD %s is still busy with %d references\n"
431 "You should stop active file system users,"
432 " or use the --force option to cleanup.\n",
433 obd->obd_name, atomic_read(&obd->obd_refcount));
435 /* Allow a failed cleanup to try again. */
436 obd->obd_stopping = 0;
439 /* refcounf - 3 might be the number of real exports
440 (excluding self export). But class_incref is called
441 by other things as well, so don't count on it. */
442 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
443 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
445 class_disconnect_exports(obd);
447 LASSERT(obd->obd_self_export);
449 /* destroy an uuid-export hash body */
450 lustre_hash_exit(&obd->obd_uuid_hash_body);
452 /* destroy a nid-export hash body */
453 lustre_hash_exit(&obd->obd_nid_hash_body);
455 /* destroy a nid-stats hash body */
456 lustre_hash_exit(&obd->obd_nid_stats_hash_body);
458 /* Precleanup stage 1, we must make sure all exports (other than the
459 self-export) get destroyed. */
460 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
462 CERROR("Precleanup %s returned %d\n",
470 struct obd_device *class_incref(struct obd_device *obd)
472 atomic_inc(&obd->obd_refcount);
473 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
474 atomic_read(&obd->obd_refcount));
479 void class_decref(struct obd_device *obd)
484 spin_lock(&obd->obd_dev_lock);
485 atomic_dec(&obd->obd_refcount);
486 refs = atomic_read(&obd->obd_refcount);
487 spin_unlock(&obd->obd_dev_lock);
489 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
491 if ((refs == 1) && obd->obd_stopping) {
492 /* All exports (other than the self-export) have been
493 destroyed; there should be no more in-progress ops
495 /* if we're not stopping, we didn't finish setup */
496 /* Precleanup stage 2, do other type-specific
497 cleanup requiring the self-export. */
498 err = obd_precleanup(obd, OBD_CLEANUP_SELF_EXP);
500 CERROR("Precleanup %s returned %d\n",
503 spin_lock(&obd->obd_self_export->exp_lock);
504 obd->obd_self_export->exp_flags |=
505 (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
506 (obd->obd_force ? OBD_OPT_FORCE : 0);
507 spin_unlock(&obd->obd_self_export->exp_lock);
509 /* note that we'll recurse into class_decref again */
510 class_unlink_export(obd->obd_self_export);
515 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
516 obd->obd_name, obd->obd_uuid.uuid);
517 LASSERT(!obd->obd_attached);
518 if (obd->obd_stopping) {
519 /* If we're not stopping, we were never set up */
520 err = obd_cleanup(obd);
522 CERROR("Cleanup %s returned %d\n",
525 if (OBP(obd, detach)) {
526 err = OBP(obd,detach)(obd);
528 CERROR("Detach returned %d\n", err);
530 class_release_dev(obd);
534 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
536 struct obd_import *imp;
537 struct obd_uuid uuid;
541 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
542 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
543 CERROR("invalid conn_uuid\n");
546 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
547 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
548 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
549 CERROR("can't add connection on non-client dev\n");
553 imp = obd->u.cli.cl_import;
555 CERROR("try to add conn on immature client dev\n");
559 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
560 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
565 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
567 struct obd_import *imp;
568 struct obd_uuid uuid;
572 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
573 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
574 CERROR("invalid conn_uuid\n");
577 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
578 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
579 CERROR("can't del connection on non-client dev\n");
583 imp = obd->u.cli.cl_import;
585 CERROR("try to del conn on immature client dev\n");
589 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
590 rc = obd_del_conn(imp, &uuid);
595 CFS_LIST_HEAD(lustre_profile_list);
597 struct lustre_profile *class_get_profile(const char * prof)
599 struct lustre_profile *lprof;
602 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
603 if (!strcmp(lprof->lp_profile, prof)) {
610 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
611 int mdclen, char *mdc)
613 struct lustre_profile *lprof;
617 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
619 OBD_ALLOC(lprof, sizeof(*lprof));
622 CFS_INIT_LIST_HEAD(&lprof->lp_list);
624 LASSERT(proflen == (strlen(prof) + 1));
625 OBD_ALLOC(lprof->lp_profile, proflen);
626 if (lprof->lp_profile == NULL)
627 GOTO(out, err = -ENOMEM);
628 memcpy(lprof->lp_profile, prof, proflen);
630 LASSERT(osclen == (strlen(osc) + 1));
631 OBD_ALLOC(lprof->lp_dt, osclen);
632 if (lprof->lp_dt == NULL)
633 GOTO(out, err = -ENOMEM);
634 memcpy(lprof->lp_dt, osc, osclen);
637 LASSERT(mdclen == (strlen(mdc) + 1));
638 OBD_ALLOC(lprof->lp_md, mdclen);
639 if (lprof->lp_md == NULL)
640 GOTO(out, err = -ENOMEM);
641 memcpy(lprof->lp_md, mdc, mdclen);
644 list_add(&lprof->lp_list, &lustre_profile_list);
649 OBD_FREE(lprof->lp_md, mdclen);
651 OBD_FREE(lprof->lp_dt, osclen);
652 if (lprof->lp_profile)
653 OBD_FREE(lprof->lp_profile, proflen);
654 OBD_FREE(lprof, sizeof(*lprof));
658 void class_del_profile(const char *prof)
660 struct lustre_profile *lprof;
663 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
665 lprof = class_get_profile(prof);
667 list_del(&lprof->lp_list);
668 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
669 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
671 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
672 OBD_FREE(lprof, sizeof *lprof);
678 void class_del_profiles(void)
680 struct lustre_profile *lprof, *n;
683 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
684 list_del(&lprof->lp_list);
685 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
686 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
688 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
689 OBD_FREE(lprof, sizeof *lprof);
694 /* We can't call ll_process_config directly because it lives in a module that
695 must be loaded after this one. */
696 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
698 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
700 client_process_config = cpc;
702 EXPORT_SYMBOL(lustre_register_client_process_config);
704 int class_process_config(struct lustre_cfg *lcfg)
706 struct obd_device *obd;
709 LASSERT(lcfg && !IS_ERR(lcfg));
710 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
712 /* Commands that don't need a device */
713 switch(lcfg->lcfg_command) {
715 err = class_attach(lcfg);
718 case LCFG_ADD_UUID: {
719 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
720 " (%s)\n", lustre_cfg_string(lcfg, 1),
721 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
723 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
726 case LCFG_DEL_UUID: {
727 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
728 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
729 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
731 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
734 case LCFG_MOUNTOPT: {
735 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
736 lustre_cfg_string(lcfg, 1),
737 lustre_cfg_string(lcfg, 2),
738 lustre_cfg_string(lcfg, 3));
739 /* set these mount options somewhere, so ll_fill_super
741 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
742 lustre_cfg_string(lcfg, 1),
743 LUSTRE_CFG_BUFLEN(lcfg, 2),
744 lustre_cfg_string(lcfg, 2),
745 LUSTRE_CFG_BUFLEN(lcfg, 3),
746 lustre_cfg_string(lcfg, 3));
749 case LCFG_DEL_MOUNTOPT: {
750 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
751 lustre_cfg_string(lcfg, 1));
752 class_del_profile(lustre_cfg_string(lcfg, 1));
755 case LCFG_SET_TIMEOUT: {
756 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
757 obd_timeout, lcfg->lcfg_num);
758 obd_timeout = max(lcfg->lcfg_num, 1U);
759 obd_health_check_timeout = HEALTH_CHECK_TIMEOUT;
762 case LCFG_SET_UPCALL: {
763 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
764 /* COMPAT_146 Don't fail on old configs */
768 struct cfg_marker *marker;
769 marker = lustre_cfg_buf(lcfg, 1);
770 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
771 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
775 /* llite has no obd */
776 if ((class_match_param(lustre_cfg_string(lcfg, 1),
777 PARAM_LLITE, 0) == 0) &&
778 client_process_config) {
779 err = (*client_process_config)(lcfg);
787 /* Commands that require a device */
788 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
790 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
791 CERROR("this lcfg command requires a device name\n");
793 CERROR("no device for: %s\n",
794 lustre_cfg_string(lcfg, 0));
796 GOTO(out, err = -EINVAL);
799 switch(lcfg->lcfg_command) {
801 err = class_setup(obd, lcfg);
805 err = class_detach(obd, lcfg);
809 err = class_cleanup(obd, lcfg);
812 case LCFG_ADD_CONN: {
813 err = class_add_conn(obd, lcfg);
816 case LCFG_DEL_CONN: {
817 err = class_del_conn(obd, lcfg);
821 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
827 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
828 CWARN("Ignoring error %d on optional command %#x\n", err,
835 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
836 struct lustre_cfg *lcfg, void *data)
839 struct lprocfs_vars *var;
841 int i, keylen, vallen;
842 int matched = 0, j = 0;
846 if (lcfg->lcfg_command != LCFG_PARAM) {
847 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
851 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
852 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
853 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
854 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
855 key = lustre_cfg_buf(lcfg, i);
856 /* Strip off prefix */
857 class_match_param(key, prefix, &key);
858 sval = strchr(key, '=');
859 if (!sval || (*(sval + 1) == 0)) {
860 CERROR("Can't parse param %s\n", key);
862 /* continue parsing other params */
867 vallen = strlen(sval);
870 /* Search proc entries */
871 while (lvars[j].name) {
873 if (class_match_param(key, (char *)var->name, 0) == 0 &&
874 keylen == strlen(var->name)) {
877 if (var->write_fptr) {
881 rc = (var->write_fptr)(NULL, sval,
886 CERROR("writing proc entry %s err %d\n",
893 CERROR("%s: unknown param %s\n",
894 (char *)lustre_cfg_string(lcfg, 0), key);
895 /* rc = -EINVAL; continue parsing other params */
897 LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
898 (char *)lustre_cfg_string(lcfg, 0),
899 (int)strlen(prefix) - 1, prefix,
900 (int)(sval - key - 1), key, sval);
908 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
909 /* Don't throw config error */
914 int class_config_dump_handler(struct llog_handle * handle,
915 struct llog_rec_hdr *rec, void *data);
918 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
920 #define lustre_check_exclusion(a,b) 0
923 static int class_config_llog_handler(struct llog_handle * handle,
924 struct llog_rec_hdr *rec, void *data)
926 struct config_llog_instance *clli = data;
927 int cfg_len = rec->lrh_len;
928 char *cfg_buf = (char*) (rec + 1);
932 //class_config_dump_handler(handle, rec, data);
934 switch (rec->lrh_type) {
936 struct lustre_cfg *lcfg, *lcfg_new;
937 struct lustre_cfg_bufs bufs;
938 char *inst_name = NULL;
942 lcfg = (struct lustre_cfg *)cfg_buf;
943 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
944 lustre_swab_lustre_cfg(lcfg);
946 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
950 /* Figure out config state info */
951 if (lcfg->lcfg_command == LCFG_MARKER) {
952 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
953 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
954 clli->cfg_flags, marker->cm_flags);
955 if (marker->cm_flags & CM_START) {
956 /* all previous flags off */
957 clli->cfg_flags = CFG_F_MARKER;
958 if (marker->cm_flags & CM_SKIP) {
959 clli->cfg_flags |= CFG_F_SKIP;
960 CDEBUG(D_CONFIG, "SKIP #%d\n",
962 } else if ((marker->cm_flags & CM_EXCLUDE) ||
963 lustre_check_exclusion(clli->cfg_sb,
964 marker->cm_tgtname)) {
965 clli->cfg_flags |= CFG_F_EXCLUDE;
966 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
969 } else if (marker->cm_flags & CM_END) {
973 /* A config command without a start marker before it is
974 illegal (post 146) */
975 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
976 !(clli->cfg_flags & CFG_F_MARKER) &&
977 (lcfg->lcfg_command != LCFG_MARKER)) {
978 CWARN("Config not inside markers, ignoring! "
979 "(inst: %s, uuid: %s, flags: %#x)\n",
980 clli->cfg_instance ? clli->cfg_instance : "<null>",
981 clli->cfg_uuid.uuid, clli->cfg_flags);
982 clli->cfg_flags |= CFG_F_SKIP;
984 if (clli->cfg_flags & CFG_F_SKIP) {
985 CDEBUG(D_CONFIG, "skipping %#x\n",
992 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
993 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
994 /* Add inactive instead */
995 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
997 lustre_cfg_bufs_init(&bufs, lcfg);
999 if (clli && clli->cfg_instance &&
1000 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
1002 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
1003 strlen(clli->cfg_instance) + 1;
1004 OBD_ALLOC(inst_name, inst_len);
1005 if (inst_name == NULL)
1006 GOTO(out, rc = -ENOMEM);
1007 sprintf(inst_name, "%s-%s",
1008 lustre_cfg_string(lcfg, 0),
1009 clli->cfg_instance);
1010 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1011 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1012 lcfg->lcfg_command, inst_name);
1015 /* we override the llog's uuid for clients, to insure they
1017 if (clli && clli->cfg_instance &&
1018 lcfg->lcfg_command == LCFG_ATTACH) {
1019 lustre_cfg_bufs_set_string(&bufs, 2,
1020 clli->cfg_uuid.uuid);
1023 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1025 lcfg_new->lcfg_num = lcfg->lcfg_num;
1026 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1028 /* XXX Hack to try to remain binary compatible with
1029 * pre-newconfig logs */
1030 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1031 (lcfg->lcfg_nid >> 32) == 0) {
1032 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1034 lcfg_new->lcfg_nid =
1035 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1036 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1037 lcfg->lcfg_nal, addr,
1038 libcfs_nid2str(lcfg_new->lcfg_nid));
1040 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1043 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1045 rc = class_process_config(lcfg_new);
1046 lustre_cfg_free(lcfg_new);
1049 OBD_FREE(inst_name, inst_len);
1053 CERROR("Unknown llog record type %#x encountered\n",
1059 CERROR("Err %d on cfg command:\n", rc);
1060 class_config_dump_handler(handle, rec, data);
1065 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1066 struct config_llog_instance *cfg)
1068 struct llog_process_cat_data cd = {0, 0};
1069 struct llog_handle *llh;
1073 CDEBUG(D_INFO, "looking up llog %s\n", name);
1074 rc = llog_create(ctxt, &llh, NULL, name);
1078 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1080 GOTO(parse_out, rc);
1082 /* continue processing from where we last stopped to end-of-log */
1084 cd.first_idx = cfg->cfg_last_idx;
1087 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1089 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1090 cd.first_idx + 1, cd.last_idx, rc);
1093 cfg->cfg_last_idx = cd.last_idx;
1096 rc2 = llog_close(llh);
1103 int class_config_dump_handler(struct llog_handle * handle,
1104 struct llog_rec_hdr *rec, void *data)
1106 int cfg_len = rec->lrh_len;
1107 char *cfg_buf = (char*) (rec + 1);
1108 char *outstr, *ptr, *end;
1112 OBD_ALLOC(outstr, 256);
1118 if (rec->lrh_type == OBD_CFG_REC) {
1119 struct lustre_cfg *lcfg;
1122 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1125 lcfg = (struct lustre_cfg *)cfg_buf;
1127 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1128 lcfg->lcfg_command);
1129 if (lcfg->lcfg_flags) {
1130 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1133 if (lcfg->lcfg_num) {
1134 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1137 if (lcfg->lcfg_nid) {
1138 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1139 libcfs_nid2str(lcfg->lcfg_nid),
1142 if (lcfg->lcfg_command == LCFG_MARKER) {
1143 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1144 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1145 marker->cm_step, marker->cm_flags,
1146 marker->cm_tgtname, marker->cm_comment);
1148 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1149 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1150 lustre_cfg_string(lcfg, i));
1153 LCONSOLE(D_WARNING, " %s\n", outstr);
1155 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1159 OBD_FREE(outstr, 256);
1163 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1164 struct config_llog_instance *cfg)
1166 struct llog_handle *llh;
1170 LCONSOLE_INFO("Dumping config log %s\n", name);
1172 rc = llog_create(ctxt, &llh, NULL, name);
1176 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1178 GOTO(parse_out, rc);
1180 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1182 rc2 = llog_close(llh);
1186 LCONSOLE_INFO("End config log %s\n", name);
1191 /* Cleanup and detach */
1192 int class_manual_cleanup(struct obd_device *obd)
1194 struct lustre_cfg *lcfg;
1195 struct lustre_cfg_bufs bufs;
1201 CERROR("empty cleanup\n");
1210 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1211 obd->obd_name, flags);
1213 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1214 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1215 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1217 rc = class_process_config(lcfg);
1219 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1223 /* the lcfg is almost the same for both ops */
1224 lcfg->lcfg_command = LCFG_DETACH;
1225 rc = class_process_config(lcfg);
1227 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1229 lustre_cfg_free(lcfg);