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>
42 /*********** string parsing utils *********/
44 /* returns 0 if we find this key in the buffer, else 1 */
45 int class_find_param(char *buf, char *key, char **valp)
52 if ((ptr = strstr(buf, key)) == NULL)
56 *valp = ptr + strlen(key);
61 /* returns 0 if this is the first key in the buffer, else 1.
62 valp points to first char after key. */
63 int class_match_param(char *buf, char *key, char **valp)
68 if (memcmp(buf, key, strlen(key)) != 0)
72 *valp = buf + strlen(key);
80 endh is set to next separator */
81 int class_parse_nid(char *buf, lnet_nid_t *nid, char **endh)
87 while (*buf == ',' || *buf == ':')
89 if (*buf == ' ' || *buf == '/' || *buf == '\0')
92 /* nid separators or end of nids */
93 endp = strpbrk(buf, ",: /");
95 endp = buf + strlen(buf);
99 *nid = libcfs_str2nid(buf);
100 if (*nid == LNET_NID_ANY) {
101 LCONSOLE_ERROR_MSG(0x159, "Can't parse NID '%s'\n", buf);
109 CDEBUG(D_INFO, "Nid %s\n", libcfs_nid2str(*nid));
113 EXPORT_SYMBOL(class_find_param);
114 EXPORT_SYMBOL(class_match_param);
115 EXPORT_SYMBOL(class_parse_nid);
117 /********************** class fns **********************/
119 /* Create a new device and set the type, name and uuid. If
120 * successful, the new device can be accessed by either name or uuid.
122 int class_attach(struct lustre_cfg *lcfg)
124 struct obd_device *obd = NULL;
125 char *typename, *name, *uuid;
129 if (!LUSTRE_CFG_BUFLEN(lcfg, 1)) {
130 CERROR("No type passed!\n");
133 typename = lustre_cfg_string(lcfg, 1);
135 if (!LUSTRE_CFG_BUFLEN(lcfg, 0)) {
136 CERROR("No name passed!\n");
139 name = lustre_cfg_string(lcfg, 0);
141 if (!LUSTRE_CFG_BUFLEN(lcfg, 2)) {
142 CERROR("No UUID passed!\n");
145 uuid = lustre_cfg_string(lcfg, 2);
147 CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
148 MKSTR(typename), MKSTR(name), MKSTR(uuid));
150 obd = class_newdev(typename, name);
152 /* Already exists or out of obds */
155 CERROR("Cannot create device %s of type %s : %d\n",
159 LASSERTF(obd != NULL, "Cannot get obd device %s of type %s\n",
161 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC,
162 "obd %p obd_magic %08X != %08X\n",
163 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
164 LASSERTF(strncmp(obd->obd_name, name, strlen(name)) == 0, "%p obd_name %s != %s\n",
165 obd, obd->obd_name, name);
167 CFS_INIT_LIST_HEAD(&obd->obd_exports);
168 CFS_INIT_LIST_HEAD(&obd->obd_exports_timed);
169 spin_lock_init(&obd->obd_dev_lock);
170 sema_init(&obd->obd_dev_sem, 1);
171 sema_init(&obd->obd_proc_exp_sem, 1);
172 spin_lock_init(&obd->obd_osfs_lock);
173 /* obd->obd_osfs_age must be set to a value in the distant
174 * past to guarantee a fresh statfs is fetched on mount. */
175 obd->obd_osfs_age = cfs_time_shift_64(-1000);
177 /* XXX belongs in setup not attach */
179 cfs_init_timer(&obd->obd_recovery_timer);
180 spin_lock_init(&obd->obd_processing_task_lock);
181 cfs_waitq_init(&obd->obd_next_transno_waitq);
182 CFS_INIT_LIST_HEAD(&obd->obd_req_replay_queue);
183 CFS_INIT_LIST_HEAD(&obd->obd_lock_replay_queue);
184 CFS_INIT_LIST_HEAD(&obd->obd_final_req_queue);
186 spin_lock_init(&obd->obd_uncommitted_replies_lock);
187 CFS_INIT_LIST_HEAD(&obd->obd_uncommitted_replies);
190 if (len >= sizeof(obd->obd_uuid)) {
191 CERROR("uuid must be < "LPSZ" bytes long\n",
192 sizeof(obd->obd_uuid));
193 GOTO(out, rc = -EINVAL);
195 memcpy(obd->obd_uuid.uuid, uuid, len);
198 if (OBP(obd, attach)) {
199 rc = OBP(obd,attach)(obd, sizeof *lcfg, lcfg);
201 GOTO(out, rc = -EINVAL);
204 /* Detach drops this */
205 spin_lock(&obd->obd_dev_lock);
206 atomic_set(&obd->obd_refcount, 1);
207 spin_unlock(&obd->obd_dev_lock);
209 obd->obd_attached = 1;
210 CDEBUG(D_IOCTL, "OBD: dev %d attached type %s with refcount %d\n",
211 obd->obd_minor, typename, atomic_read(&obd->obd_refcount));
215 class_release_dev(obd);
220 int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
223 struct obd_export *exp;
226 LASSERT(obd != NULL);
227 LASSERTF(obd == class_num2obd(obd->obd_minor), "obd %p != obd_devs[%d] %p\n",
228 obd, obd->obd_minor, class_num2obd(obd->obd_minor));
229 LASSERTF(obd->obd_magic == OBD_DEVICE_MAGIC, "obd %p obd_magic %08x != %08x\n",
230 obd, obd->obd_magic, OBD_DEVICE_MAGIC);
232 /* have we attached a type to this device? */
233 if (!obd->obd_attached) {
234 CERROR("Device %d not attached\n", obd->obd_minor);
238 if (obd->obd_set_up) {
239 CERROR("Device %d already setup (type %s)\n",
240 obd->obd_minor, obd->obd_type->typ_name);
244 /* is someone else setting us up right now? (attach inits spinlock) */
245 spin_lock(&obd->obd_dev_lock);
246 if (obd->obd_starting) {
247 spin_unlock(&obd->obd_dev_lock);
248 CERROR("Device %d setup in progress (type %s)\n",
249 obd->obd_minor, obd->obd_type->typ_name);
252 /* just leave this on forever. I can't use obd_set_up here because
253 other fns check that status, and we're not actually set up yet. */
254 obd->obd_starting = 1;
255 spin_unlock(&obd->obd_dev_lock);
257 exp = class_new_export(obd, &obd->obd_uuid);
259 RETURN(PTR_ERR(exp));
260 obd->obd_self_export = exp;
261 list_del_init(&exp->exp_obd_chain_timed);
262 class_export_put(exp);
264 err = obd_setup(obd, lcfg);
270 spin_lock(&obd->obd_dev_lock);
271 /* cleanup drops this */
273 spin_unlock(&obd->obd_dev_lock);
275 CDEBUG(D_IOCTL, "finished setup of obd %s (uuid %s)\n",
276 obd->obd_name, obd->obd_uuid.uuid);
281 CERROR("setup %s failed (%d)\n", obd->obd_name, err);
282 class_unlink_export(obd->obd_self_export);
283 obd->obd_self_export = NULL;
284 obd->obd_starting = 0;
288 int class_detach(struct obd_device *obd, struct lustre_cfg *lcfg)
292 if (obd->obd_set_up) {
293 CERROR("OBD device %d still set up\n", obd->obd_minor);
297 spin_lock(&obd->obd_dev_lock);
298 if (!obd->obd_attached) {
299 spin_unlock(&obd->obd_dev_lock);
300 CERROR("OBD device %d not attached\n", obd->obd_minor);
303 obd->obd_attached = 0;
304 spin_unlock(&obd->obd_dev_lock);
306 CDEBUG(D_IOCTL, "detach on obd %s (uuid %s)\n",
307 obd->obd_name, obd->obd_uuid.uuid);
311 /* not strictly necessary, but cleans up eagerly */
312 obd_zombie_impexp_cull();
317 static void dump_exports(struct obd_device *obd)
319 struct obd_export *exp, *n;
321 list_for_each_entry_safe(exp, n, &obd->obd_exports, exp_obd_chain) {
322 struct ptlrpc_reply_state *rs;
323 struct ptlrpc_reply_state *first_reply = NULL;
326 list_for_each_entry (rs, &exp->exp_outstanding_replies,
333 CDEBUG(D_IOCTL, "%s: %p %s %s %d %d %d: %p %s\n",
334 obd->obd_name, exp, exp->exp_client_uuid.uuid,
335 obd_export_nid2str(exp),
336 atomic_read(&exp->exp_refcount),
337 exp->exp_failed, nreplies, first_reply,
338 nreplies > 3 ? "..." : "");
342 int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
348 OBD_RACE(OBD_FAIL_LDLM_RECOV_CLIENTS);
350 if (!obd->obd_set_up) {
351 CERROR("Device %d not setup\n", obd->obd_minor);
355 spin_lock(&obd->obd_dev_lock);
356 if (obd->obd_stopping) {
357 spin_unlock(&obd->obd_dev_lock);
358 CERROR("OBD %d already stopping\n", obd->obd_minor);
361 /* Leave this on forever */
362 obd->obd_stopping = 1;
363 spin_unlock(&obd->obd_dev_lock);
365 if (lcfg->lcfg_bufcount >= 2 && LUSTRE_CFG_BUFLEN(lcfg, 1) > 0) {
366 for (flag = lustre_cfg_string(lcfg, 1); *flag != 0; flag++)
372 LCONSOLE_WARN("Failing over %s\n",
375 obd->obd_no_transno = 1;
376 obd->obd_no_recov = 1;
377 /* Set the obd readonly if we can */
378 if (OBP(obd, iocontrol))
379 obd_iocontrol(OBD_IOC_SET_READONLY,
380 obd->obd_self_export,
384 CERROR("unrecognised flag '%c'\n",
389 /* The three references that should be remaining are the
390 * obd_self_export and the attach and setup references. */
391 if (atomic_read(&obd->obd_refcount) > 3) {
392 #if 0 /* We should never fail to cleanup with mountconf */
393 if (!(obd->obd_fail || obd->obd_force)) {
394 CERROR("OBD %s is still busy with %d references\n"
395 "You should stop active file system users,"
396 " or use the --force option to cleanup.\n",
397 obd->obd_name, atomic_read(&obd->obd_refcount));
399 /* Allow a failed cleanup to try again. */
400 obd->obd_stopping = 0;
403 /* refcounf - 3 might be the number of real exports
404 (excluding self export). But class_incref is called
405 by other things as well, so don't count on it. */
406 CDEBUG(D_IOCTL, "%s: forcing exports to disconnect: %d\n",
407 obd->obd_name, atomic_read(&obd->obd_refcount) - 3);
409 class_disconnect_exports(obd);
411 LASSERT(obd->obd_self_export);
413 /* Precleanup stage 1, we must make sure all exports (other than the
414 self-export) get destroyed. */
415 err = obd_precleanup(obd, OBD_CLEANUP_EXPORTS);
417 CERROR("Precleanup %s returned %d\n",
425 struct obd_device *class_incref(struct obd_device *obd)
427 atomic_inc(&obd->obd_refcount);
428 CDEBUG(D_INFO, "incref %s (%p) now %d\n", obd->obd_name, obd,
429 atomic_read(&obd->obd_refcount));
434 void class_decref(struct obd_device *obd)
439 spin_lock(&obd->obd_dev_lock);
440 atomic_dec(&obd->obd_refcount);
441 refs = atomic_read(&obd->obd_refcount);
442 spin_unlock(&obd->obd_dev_lock);
444 CDEBUG(D_INFO, "Decref %s (%p) now %d\n", obd->obd_name, obd, refs);
446 if ((refs == 1) && obd->obd_stopping) {
447 /* All exports (other than the self-export) have been
448 destroyed; there should be no more in-progress ops
450 /* if we're not stopping, we didn't finish setup */
451 /* Precleanup stage 2, do other type-specific
452 cleanup requiring the self-export. */
453 err = obd_precleanup(obd, OBD_CLEANUP_SELF_EXP);
455 CERROR("Precleanup %s returned %d\n",
458 spin_lock(&obd->obd_self_export->exp_lock);
459 obd->obd_self_export->exp_flags |=
460 (obd->obd_fail ? OBD_OPT_FAILOVER : 0) |
461 (obd->obd_force ? OBD_OPT_FORCE : 0);
462 spin_unlock(&obd->obd_self_export->exp_lock);
464 /* note that we'll recurse into class_decref again */
465 class_unlink_export(obd->obd_self_export);
470 CDEBUG(D_CONFIG, "finishing cleanup of obd %s (%s)\n",
471 obd->obd_name, obd->obd_uuid.uuid);
472 LASSERT(!obd->obd_attached);
473 if (obd->obd_stopping) {
474 /* If we're not stopping, we were never set up */
475 err = obd_cleanup(obd);
477 CERROR("Cleanup %s returned %d\n",
480 if (OBP(obd, detach)) {
481 err = OBP(obd,detach)(obd);
483 CERROR("Detach returned %d\n", err);
485 class_release_dev(obd);
489 int class_add_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
491 struct obd_import *imp;
492 struct obd_uuid uuid;
496 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
497 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
498 CERROR("invalid conn_uuid\n");
501 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
502 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME) &&
503 strcmp(obd->obd_type->typ_name, LUSTRE_MGC_NAME)) {
504 CERROR("can't add connection on non-client dev\n");
508 imp = obd->u.cli.cl_import;
510 CERROR("try to add conn on immature client dev\n");
514 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
515 rc = obd_add_conn(imp, &uuid, lcfg->lcfg_num);
520 int class_del_conn(struct obd_device *obd, struct lustre_cfg *lcfg)
522 struct obd_import *imp;
523 struct obd_uuid uuid;
527 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1 ||
528 LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(struct obd_uuid)) {
529 CERROR("invalid conn_uuid\n");
532 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
533 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
534 CERROR("can't del connection on non-client dev\n");
538 imp = obd->u.cli.cl_import;
540 CERROR("try to del conn on immature client dev\n");
544 obd_str2uuid(&uuid, lustre_cfg_string(lcfg, 1));
545 rc = obd_del_conn(imp, &uuid);
550 int class_sec_flavor(struct obd_device *obd, struct lustre_cfg *lcfg)
552 struct sec_flavor_config *conf;
555 if (strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) &&
556 strcmp(obd->obd_type->typ_name, LUSTRE_OSC_NAME)) {
557 CERROR("Can't set security flavor on obd %s\n",
558 obd->obd_type->typ_name);
562 if (LUSTRE_CFG_BUFLEN(lcfg, 1) != sizeof(*conf)) {
563 CERROR("invalid data\n");
567 conf = &obd->u.cli.cl_sec_conf;
568 memcpy(conf, lustre_cfg_buf(lcfg, 1), sizeof(*conf));
571 __swab32s(&conf->sfc_rpc_flavor);
572 __swab32s(&conf->sfc_bulk_csum);
573 __swab32s(&conf->sfc_bulk_priv);
574 __swab32s(&conf->sfc_flags);
580 CFS_LIST_HEAD(lustre_profile_list);
582 struct lustre_profile *class_get_profile(const char * prof)
584 struct lustre_profile *lprof;
587 list_for_each_entry(lprof, &lustre_profile_list, lp_list) {
588 if (!strcmp(lprof->lp_profile, prof)) {
595 int class_add_profile(int proflen, char *prof, int osclen, char *osc,
596 int mdclen, char *mdc)
598 struct lustre_profile *lprof;
602 CDEBUG(D_CONFIG, "Add profile %s\n", prof);
604 OBD_ALLOC(lprof, sizeof(*lprof));
607 CFS_INIT_LIST_HEAD(&lprof->lp_list);
609 LASSERT(proflen == (strlen(prof) + 1));
610 OBD_ALLOC(lprof->lp_profile, proflen);
611 if (lprof->lp_profile == NULL)
612 GOTO(out, err = -ENOMEM);
613 memcpy(lprof->lp_profile, prof, proflen);
615 LASSERT(osclen == (strlen(osc) + 1));
616 OBD_ALLOC(lprof->lp_dt, osclen);
617 if (lprof->lp_dt == NULL)
618 GOTO(out, err = -ENOMEM);
619 memcpy(lprof->lp_dt, osc, osclen);
622 LASSERT(mdclen == (strlen(mdc) + 1));
623 OBD_ALLOC(lprof->lp_md, mdclen);
624 if (lprof->lp_md == NULL)
625 GOTO(out, err = -ENOMEM);
626 memcpy(lprof->lp_md, mdc, mdclen);
629 list_add(&lprof->lp_list, &lustre_profile_list);
634 OBD_FREE(lprof->lp_md, mdclen);
636 OBD_FREE(lprof->lp_dt, osclen);
637 if (lprof->lp_profile)
638 OBD_FREE(lprof->lp_profile, proflen);
639 OBD_FREE(lprof, sizeof(*lprof));
643 void class_del_profile(const char *prof)
645 struct lustre_profile *lprof;
648 CDEBUG(D_CONFIG, "Del profile %s\n", prof);
650 lprof = class_get_profile(prof);
652 list_del(&lprof->lp_list);
653 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
654 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
656 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
657 OBD_FREE(lprof, sizeof *lprof);
663 void class_del_profiles(void)
665 struct lustre_profile *lprof, *n;
668 list_for_each_entry_safe(lprof, n, &lustre_profile_list, lp_list) {
669 list_del(&lprof->lp_list);
670 OBD_FREE(lprof->lp_profile, strlen(lprof->lp_profile) + 1);
671 OBD_FREE(lprof->lp_dt, strlen(lprof->lp_dt) + 1);
673 OBD_FREE(lprof->lp_md, strlen(lprof->lp_md) + 1);
674 OBD_FREE(lprof, sizeof *lprof);
679 /* We can't call ll_process_config directly because it lives in a module that
680 must be loaded after this one. */
681 static int (*client_process_config)(struct lustre_cfg *lcfg) = NULL;
683 void lustre_register_client_process_config(int (*cpc)(struct lustre_cfg *lcfg))
685 client_process_config = cpc;
687 EXPORT_SYMBOL(lustre_register_client_process_config);
689 int class_process_config(struct lustre_cfg *lcfg)
691 struct obd_device *obd;
694 LASSERT(lcfg && !IS_ERR(lcfg));
695 CDEBUG(D_IOCTL, "processing cmd: %x\n", lcfg->lcfg_command);
697 /* Commands that don't need a device */
698 switch(lcfg->lcfg_command) {
700 err = class_attach(lcfg);
703 case LCFG_ADD_UUID: {
704 CDEBUG(D_IOCTL, "adding mapping from uuid %s to nid "LPX64
705 " (%s)\n", lustre_cfg_string(lcfg, 1),
706 lcfg->lcfg_nid, libcfs_nid2str(lcfg->lcfg_nid));
708 err = class_add_uuid(lustre_cfg_string(lcfg, 1), lcfg->lcfg_nid);
711 case LCFG_DEL_UUID: {
712 CDEBUG(D_IOCTL, "removing mappings for uuid %s\n",
713 (lcfg->lcfg_bufcount < 2 || LUSTRE_CFG_BUFLEN(lcfg, 1) == 0)
714 ? "<all uuids>" : lustre_cfg_string(lcfg, 1));
716 err = class_del_uuid(lustre_cfg_string(lcfg, 1));
719 case LCFG_MOUNTOPT: {
720 CDEBUG(D_IOCTL, "mountopt: profile %s osc %s mdc %s\n",
721 lustre_cfg_string(lcfg, 1),
722 lustre_cfg_string(lcfg, 2),
723 lustre_cfg_string(lcfg, 3));
724 /* set these mount options somewhere, so ll_fill_super
726 err = class_add_profile(LUSTRE_CFG_BUFLEN(lcfg, 1),
727 lustre_cfg_string(lcfg, 1),
728 LUSTRE_CFG_BUFLEN(lcfg, 2),
729 lustre_cfg_string(lcfg, 2),
730 LUSTRE_CFG_BUFLEN(lcfg, 3),
731 lustre_cfg_string(lcfg, 3));
734 case LCFG_DEL_MOUNTOPT: {
735 CDEBUG(D_IOCTL, "mountopt: profile %s\n",
736 lustre_cfg_string(lcfg, 1));
737 class_del_profile(lustre_cfg_string(lcfg, 1));
740 case LCFG_SET_TIMEOUT: {
741 CDEBUG(D_IOCTL, "changing lustre timeout from %d to %d\n",
742 obd_timeout, lcfg->lcfg_num);
743 obd_timeout = max(lcfg->lcfg_num, 1U);
744 obd_health_check_timeout = HEALTH_CHECK_TIMEOUT;
747 case LCFG_SET_UPCALL: {
748 LCONSOLE_ERROR_MSG(0x15a, "recovery upcall is deprecated\n");
749 /* COMPAT_146 Don't fail on old configs */
753 struct cfg_marker *marker;
754 marker = lustre_cfg_buf(lcfg, 1);
755 CDEBUG(D_IOCTL, "marker %d (%#x) %.16s %s\n", marker->cm_step,
756 marker->cm_flags, marker->cm_tgtname, marker->cm_comment);
760 /* llite has no obd */
761 if ((class_match_param(lustre_cfg_string(lcfg, 1),
762 PARAM_LLITE, 0) == 0) &&
763 client_process_config) {
764 err = (*client_process_config)(lcfg);
772 /* Commands that require a device */
773 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
775 if (!LUSTRE_CFG_BUFLEN(lcfg, 0))
776 CERROR("this lcfg command requires a device name\n");
778 CERROR("no device for: %s\n",
779 lustre_cfg_string(lcfg, 0));
781 GOTO(out, err = -EINVAL);
784 switch(lcfg->lcfg_command) {
786 err = class_setup(obd, lcfg);
790 err = class_detach(obd, lcfg);
794 err = class_cleanup(obd, lcfg);
797 case LCFG_ADD_CONN: {
798 err = class_add_conn(obd, lcfg);
801 case LCFG_DEL_CONN: {
802 err = class_del_conn(obd, lcfg);
805 case LCFG_SEC_FLAVOR: {
806 err = class_sec_flavor(obd, lcfg);
810 err = obd_process_config(obd, sizeof(*lcfg), lcfg);
816 if ((err < 0) && !(lcfg->lcfg_command & LCFG_REQUIRED)) {
817 CWARN("Ignoring error %d on optional command %#x\n", err,
824 int class_process_proc_param(char *prefix, struct lprocfs_vars *lvars,
825 struct lustre_cfg *lcfg, void *data)
828 struct lprocfs_vars *var;
830 int i, keylen, vallen;
831 int matched = 0, j = 0;
835 if (lcfg->lcfg_command != LCFG_PARAM) {
836 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
840 /* e.g. tunefs.lustre --param mdt.group_upcall=foo /r/tmp/lustre-mdt
841 or lctl conf_param lustre-MDT0000.mdt.group_upcall=bar
842 or lctl conf_param lustre-OST0000.osc.max_dirty_mb=36 */
843 for (i = 1; i < lcfg->lcfg_bufcount; i++) {
844 key = lustre_cfg_buf(lcfg, i);
845 /* Strip off prefix */
846 class_match_param(key, prefix, &key);
847 sval = strchr(key, '=');
848 if (!sval || (*(sval + 1) == 0)) {
849 CERROR("Can't parse param %s\n", key);
851 /* continue parsing other params */
856 vallen = strlen(sval);
859 /* Search proc entries */
860 while (lvars[j].name) {
862 if (class_match_param(key, (char *)var->name, 0) == 0 &&
863 keylen == strlen(var->name)) {
866 if (var->write_fptr) {
870 rc = (var->write_fptr)(NULL, sval,
875 CERROR("writing proc entry %s err %d\n",
882 CERROR("%s: unknown param %s\n",
883 (char *)lustre_cfg_string(lcfg, 0), key);
885 /* continue parsing other params */
887 LCONSOLE_INFO("%s.%.*s: set parameter %.*s=%s\n",
888 (char *)lustre_cfg_string(lcfg, 0),
889 (int)strlen(prefix) - 1, prefix,
890 (int)(sval - key - 1), key, sval);
898 CDEBUG(D_CONFIG, "liblustre can't process params.\n");
899 /* Don't throw config error */
904 int class_config_dump_handler(struct llog_handle * handle,
905 struct llog_rec_hdr *rec, void *data);
908 extern int lustre_check_exclusion(struct super_block *sb, char *svname);
910 #define lustre_check_exclusion(a,b) 0
913 static int class_config_llog_handler(struct llog_handle * handle,
914 struct llog_rec_hdr *rec, void *data)
916 struct config_llog_instance *clli = data;
917 int cfg_len = rec->lrh_len;
918 char *cfg_buf = (char*) (rec + 1);
922 //class_config_dump_handler(handle, rec, data);
924 switch (rec->lrh_type) {
926 struct lustre_cfg *lcfg, *lcfg_new;
927 struct lustre_cfg_bufs bufs;
928 char *inst_name = NULL;
932 lcfg = (struct lustre_cfg *)cfg_buf;
933 if (lcfg->lcfg_version == __swab32(LUSTRE_CFG_VERSION))
934 lustre_swab_lustre_cfg(lcfg);
936 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
940 /* Figure out config state info */
941 if (lcfg->lcfg_command == LCFG_MARKER) {
942 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
943 CDEBUG(D_CONFIG, "Marker, inst_flg=%#x mark_flg=%#x\n",
944 clli->cfg_flags, marker->cm_flags);
945 if (marker->cm_flags & CM_START) {
946 /* all previous flags off */
947 clli->cfg_flags = CFG_F_MARKER;
948 if (marker->cm_flags & CM_SKIP) {
949 clli->cfg_flags |= CFG_F_SKIP;
950 CDEBUG(D_CONFIG, "SKIP #%d\n",
952 } else if ((marker->cm_flags & CM_EXCLUDE) ||
953 lustre_check_exclusion(clli->cfg_sb,
954 marker->cm_tgtname)) {
955 clli->cfg_flags |= CFG_F_EXCLUDE;
956 CDEBUG(D_CONFIG, "EXCLUDE %d\n",
959 } else if (marker->cm_flags & CM_END) {
963 /* A config command without a start marker before it is
964 illegal (post 146) */
965 if (!(clli->cfg_flags & CFG_F_COMPAT146) &&
966 !(clli->cfg_flags & CFG_F_MARKER) &&
967 (lcfg->lcfg_command != LCFG_MARKER)) {
968 CWARN("Config not inside markers, ignoring! "
969 "(inst: %s, uuid: %s, flags: %#x)\n",
970 clli->cfg_instance ? clli->cfg_instance : "<null>",
971 clli->cfg_uuid.uuid, clli->cfg_flags);
972 clli->cfg_flags |= CFG_F_SKIP;
974 if (clli->cfg_flags & CFG_F_SKIP) {
975 CDEBUG(D_CONFIG, "skipping %#x\n",
982 if ((clli->cfg_flags & CFG_F_EXCLUDE) &&
983 (lcfg->lcfg_command == LCFG_LOV_ADD_OBD))
984 /* Add inactive instead */
985 lcfg->lcfg_command = LCFG_LOV_ADD_INA;
987 lustre_cfg_bufs_init(&bufs, lcfg);
989 if (clli && clli->cfg_instance &&
990 LUSTRE_CFG_BUFLEN(lcfg, 0) > 0){
992 inst_len = LUSTRE_CFG_BUFLEN(lcfg, 0) +
993 strlen(clli->cfg_instance) + 1;
994 OBD_ALLOC(inst_name, inst_len);
995 if (inst_name == NULL)
996 GOTO(out, rc = -ENOMEM);
997 sprintf(inst_name, "%s-%s",
998 lustre_cfg_string(lcfg, 0),
1000 lustre_cfg_bufs_set_string(&bufs, 0, inst_name);
1001 CDEBUG(D_CONFIG, "cmd %x, instance name: %s\n",
1002 lcfg->lcfg_command, inst_name);
1005 /* we override the llog's uuid for clients, to insure they
1007 if (clli && clli->cfg_instance &&
1008 lcfg->lcfg_command == LCFG_ATTACH) {
1009 lustre_cfg_bufs_set_string(&bufs, 2,
1010 clli->cfg_uuid.uuid);
1013 lcfg_new = lustre_cfg_new(lcfg->lcfg_command, &bufs);
1015 lcfg_new->lcfg_num = lcfg->lcfg_num;
1016 lcfg_new->lcfg_flags = lcfg->lcfg_flags;
1018 /* XXX Hack to try to remain binary compatible with
1019 * pre-newconfig logs */
1020 if (lcfg->lcfg_nal != 0 && /* pre-newconfig log? */
1021 (lcfg->lcfg_nid >> 32) == 0) {
1022 __u32 addr = (__u32)(lcfg->lcfg_nid & 0xffffffff);
1024 lcfg_new->lcfg_nid =
1025 LNET_MKNID(LNET_MKNET(lcfg->lcfg_nal, 0), addr);
1026 CWARN("Converted pre-newconfig NAL %d NID %x to %s\n",
1027 lcfg->lcfg_nal, addr,
1028 libcfs_nid2str(lcfg_new->lcfg_nid));
1030 lcfg_new->lcfg_nid = lcfg->lcfg_nid;
1033 lcfg_new->lcfg_nal = 0; /* illegal value for obsolete field */
1035 rc = class_process_config(lcfg_new);
1036 lustre_cfg_free(lcfg_new);
1039 OBD_FREE(inst_name, inst_len);
1043 CERROR("Unknown llog record type %#x encountered\n",
1049 CERROR("Err %d on cfg command:\n", rc);
1050 class_config_dump_handler(handle, rec, data);
1055 int class_config_parse_llog(struct llog_ctxt *ctxt, char *name,
1056 struct config_llog_instance *cfg)
1058 struct llog_process_cat_data cd = {0, 0};
1059 struct llog_handle *llh;
1063 CDEBUG(D_INFO, "looking up llog %s\n", name);
1064 rc = llog_create(ctxt, &llh, NULL, name);
1068 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1070 GOTO(parse_out, rc);
1072 /* continue processing from where we last stopped to end-of-log */
1074 cd.first_idx = cfg->cfg_last_idx;
1077 rc = llog_process(llh, class_config_llog_handler, cfg, &cd);
1079 CDEBUG(D_CONFIG, "Processed log %s gen %d-%d (rc=%d)\n", name,
1080 cd.first_idx + 1, cd.last_idx, rc);
1083 cfg->cfg_last_idx = cd.last_idx;
1086 rc2 = llog_close(llh);
1093 int class_config_dump_handler(struct llog_handle * handle,
1094 struct llog_rec_hdr *rec, void *data)
1096 int cfg_len = rec->lrh_len;
1097 char *cfg_buf = (char*) (rec + 1);
1098 char *outstr, *ptr, *end;
1102 OBD_ALLOC(outstr, 256);
1108 if (rec->lrh_type == OBD_CFG_REC) {
1109 struct lustre_cfg *lcfg;
1112 rc = lustre_cfg_sanity_check(cfg_buf, cfg_len);
1115 lcfg = (struct lustre_cfg *)cfg_buf;
1117 ptr += snprintf(ptr, end-ptr, "cmd=%05x ",
1118 lcfg->lcfg_command);
1119 if (lcfg->lcfg_flags) {
1120 ptr += snprintf(ptr, end-ptr, "flags=%#08x ",
1123 if (lcfg->lcfg_num) {
1124 ptr += snprintf(ptr, end-ptr, "num=%#08x ",
1127 if (lcfg->lcfg_nid) {
1128 ptr += snprintf(ptr, end-ptr, "nid=%s("LPX64")\n ",
1129 libcfs_nid2str(lcfg->lcfg_nid),
1132 if (lcfg->lcfg_command == LCFG_MARKER) {
1133 struct cfg_marker *marker = lustre_cfg_buf(lcfg, 1);
1134 ptr += snprintf(ptr, end-ptr, "marker=%d(%#x)%s '%s'",
1135 marker->cm_step, marker->cm_flags,
1136 marker->cm_tgtname, marker->cm_comment);
1138 for (i = 0; i < lcfg->lcfg_bufcount; i++) {
1139 ptr += snprintf(ptr, end-ptr, "%d:%s ", i,
1140 lustre_cfg_string(lcfg, i));
1143 LCONSOLE(D_WARNING, " %s\n", outstr);
1145 LCONSOLE(D_WARNING, "unhandled lrh_type: %#x\n", rec->lrh_type);
1149 OBD_FREE(outstr, 256);
1153 int class_config_dump_llog(struct llog_ctxt *ctxt, char *name,
1154 struct config_llog_instance *cfg)
1156 struct llog_handle *llh;
1160 LCONSOLE_INFO("Dumping config log %s\n", name);
1162 rc = llog_create(ctxt, &llh, NULL, name);
1166 rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
1168 GOTO(parse_out, rc);
1170 rc = llog_process(llh, class_config_dump_handler, cfg, NULL);
1172 rc2 = llog_close(llh);
1176 LCONSOLE_INFO("End config log %s\n", name);
1181 /* Cleanup and detach */
1182 int class_manual_cleanup(struct obd_device *obd)
1184 struct lustre_cfg *lcfg;
1185 struct lustre_cfg_bufs bufs;
1191 CERROR("empty cleanup\n");
1200 CDEBUG(D_CONFIG, "Manual cleanup of %s (flags='%s')\n",
1201 obd->obd_name, flags);
1203 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
1204 lustre_cfg_bufs_set_string(&bufs, 1, flags);
1205 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
1207 rc = class_process_config(lcfg);
1209 CERROR("cleanup failed %d: %s\n", rc, obd->obd_name);
1213 /* the lcfg is almost the same for both ops */
1214 lcfg->lcfg_command = LCFG_DETACH;
1215 rc = class_process_config(lcfg);
1217 CERROR("detach failed %d: %s\n", rc, obd->obd_name);
1219 lustre_cfg_free(lcfg);