4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
39 * Author: Mike Pershin <tappro@whamcloud.com>
40 * Author: Johann Lombardi <johann@whamcloud.com>
43 #define DEBUG_SUBSYSTEM S_FILTER
45 #include <obd_class.h>
46 #include <lustre_param.h>
47 #include <lustre_fid.h>
49 #include "ofd_internal.h"
51 /* Slab for OFD object allocation */
52 static cfs_mem_cache_t *ofd_object_kmem;
54 static struct lu_kmem_descr ofd_caches[] = {
56 .ckd_cache = &ofd_object_kmem,
57 .ckd_name = "ofd_obj",
58 .ckd_size = sizeof(struct ofd_object)
65 static int ofd_connect_to_next(const struct lu_env *env, struct ofd_device *m,
66 const char *next, struct obd_export **exp)
68 struct obd_connect_data *data = NULL;
69 struct obd_device *obd;
75 GOTO(out, rc = -ENOMEM);
77 obd = class_name2obd(next);
79 CERROR("%s: can't locate next device: %s\n",
80 m->ofd_dt_dev.dd_lu_dev.ld_obd->obd_name, next);
81 GOTO(out, rc = -ENOTCONN);
84 data->ocd_connect_flags = OBD_CONNECT_VERSION;
85 data->ocd_version = LUSTRE_VERSION_CODE;
87 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
89 CERROR("%s: cannot connect to next dev %s: rc = %d\n",
90 m->ofd_dt_dev.dd_lu_dev.ld_obd->obd_name, next, rc);
94 m->ofd_dt_dev.dd_lu_dev.ld_site =
95 m->ofd_osd_exp->exp_obd->obd_lu_dev->ld_site;
96 LASSERT(m->ofd_dt_dev.dd_lu_dev.ld_site);
97 m->ofd_osd = lu2dt_dev(m->ofd_osd_exp->exp_obd->obd_lu_dev);
98 m->ofd_dt_dev.dd_lu_dev.ld_site->ls_top_dev = &m->ofd_dt_dev.dd_lu_dev;
106 static int ofd_stack_init(const struct lu_env *env,
107 struct ofd_device *m, struct lustre_cfg *cfg)
109 const char *dev = lustre_cfg_string(cfg, 0);
111 struct ofd_thread_info *info = ofd_info(env);
112 struct lustre_mount_info *lmi;
118 lmi = server_get_mount(dev);
120 CERROR("Cannot get mount info for %s!\n", dev);
124 /* find bottom osd */
125 OBD_ALLOC(osdname, MTI_NAME_MAXLEN);
129 snprintf(osdname, MTI_NAME_MAXLEN, "%s-osd", dev);
130 rc = ofd_connect_to_next(env, m, osdname, &m->ofd_osd_exp);
131 OBD_FREE(osdname, MTI_NAME_MAXLEN);
135 d = m->ofd_osd_exp->exp_obd->obd_lu_dev;
137 m->ofd_osd = lu2dt_dev(d);
139 snprintf(info->fti_u.name, sizeof(info->fti_u.name),
140 "%s-osd", lustre_cfg_string(cfg, 0));
145 static void ofd_stack_fini(const struct lu_env *env, struct ofd_device *m,
146 struct lu_device *top)
148 struct obd_device *obd = ofd_obd(m);
149 struct lustre_cfg_bufs bufs;
150 struct lustre_cfg *lcfg;
155 lu_site_purge(env, top->ld_site, ~0);
157 /* process cleanup, pass mdt obd name to get obd umount flags */
158 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
163 lustre_cfg_bufs_set_string(&bufs, 1, flags);
164 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
166 CERROR("Cannot alloc lcfg!\n");
171 top->ld_ops->ldo_process_config(env, top, lcfg);
172 lustre_cfg_free(lcfg);
174 lu_site_purge(env, top->ld_site, ~0);
176 LASSERT(m->ofd_osd_exp);
177 obd_disconnect(m->ofd_osd_exp);
183 /* For interoperability, see mdt_interop_param[]. */
184 static struct cfg_interop_param ofd_interop_param[] = {
185 { "ost.quota_type", NULL },
189 /* used by MGS to process specific configurations */
190 static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
191 struct lustre_cfg *cfg)
193 struct ofd_device *m = ofd_dev(d);
194 struct dt_device *dt_next = m->ofd_osd;
195 struct lu_device *next = &dt_next->dd_lu_dev;
200 switch (cfg->lcfg_command) {
202 struct lprocfs_static_vars lvars;
204 /* For interoperability */
205 struct cfg_interop_param *ptr = NULL;
206 struct lustre_cfg *old_cfg = NULL;
209 param = lustre_cfg_string(cfg, 1);
211 CERROR("param is empty\n");
216 ptr = class_find_old_param(param, ofd_interop_param);
218 if (ptr->new_param == NULL) {
220 CWARN("For interoperability, skip this %s."
221 " It is obsolete.\n", ptr->old_param);
225 CWARN("Found old param %s, changed it to %s.\n",
226 ptr->old_param, ptr->new_param);
229 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
236 lprocfs_ofd_init_vars(&lvars);
237 rc = class_process_proc_param(PARAM_OST, lvars.obd_vars, cfg,
239 if (rc > 0 || rc == -ENOSYS)
240 /* we don't understand; pass it on */
241 rc = next->ld_ops->ldo_process_config(env, next, cfg);
244 case LCFG_SPTLRPC_CONF: {
249 /* others are passed further */
250 rc = next->ld_ops->ldo_process_config(env, next, cfg);
256 static int ofd_object_init(const struct lu_env *env, struct lu_object *o,
257 const struct lu_object_conf *conf)
259 struct ofd_device *d = ofd_dev(o->lo_dev);
260 struct lu_device *under;
261 struct lu_object *below;
266 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
267 PFID(lu_object_fid(o)));
269 under = &d->ofd_osd->dd_lu_dev;
270 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
272 lu_object_add(o, below);
279 static void ofd_object_free(const struct lu_env *env, struct lu_object *o)
281 struct ofd_object *of = ofd_obj(o);
282 struct lu_object_header *h;
287 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
288 PFID(lu_object_fid(o)));
291 lu_object_header_fini(h);
292 OBD_SLAB_FREE_PTR(of, ofd_object_kmem);
296 static int ofd_object_print(const struct lu_env *env, void *cookie,
297 lu_printer_t p, const struct lu_object *o)
299 return (*p)(env, cookie, LUSTRE_OST_NAME"-object@%p", o);
302 struct lu_object_operations ofd_obj_ops = {
303 .loo_object_init = ofd_object_init,
304 .loo_object_free = ofd_object_free,
305 .loo_object_print = ofd_object_print
308 static struct lu_object *ofd_object_alloc(const struct lu_env *env,
309 const struct lu_object_header *hdr,
312 struct ofd_object *of;
316 OBD_SLAB_ALLOC_PTR_GFP(of, ofd_object_kmem, CFS_ALLOC_IO);
319 struct lu_object_header *h;
321 o = &of->ofo_obj.do_lu;
323 lu_object_header_init(h);
324 lu_object_init(o, h, d);
325 lu_object_add_top(h, o);
326 o->lo_ops = &ofd_obj_ops;
333 extern int ost_handle(struct ptlrpc_request *req);
335 static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
336 struct lu_device *dev)
338 struct ofd_thread_info *info;
339 struct ofd_device *ofd = ofd_dev(dev);
340 struct obd_device *obd = ofd_obd(ofd);
341 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
346 rc = lu_env_refill((struct lu_env *)env);
348 CERROR("Failure to refill session: '%d'\n", rc);
352 info = ofd_info_init(env, NULL);
356 /* initialize lower device */
357 rc = next->ld_ops->ldo_prepare(env, dev, next);
359 target_recovery_init(&ofd->ofd_lut, ost_handle);
360 LASSERT(obd->obd_no_conn);
361 spin_lock(&obd->obd_dev_lock);
362 obd->obd_no_conn = 0;
363 spin_unlock(&obd->obd_dev_lock);
365 if (obd->obd_recovering == 0)
366 ofd_postrecov(env, ofd);
371 static int ofd_recovery_complete(const struct lu_env *env,
372 struct lu_device *dev)
374 struct ofd_device *ofd = ofd_dev(dev);
375 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
380 /* Grant space for object precreation on the self export.
381 * This initial reserved space (i.e. 20MB for zfs and 560KB for ldiskfs)
382 * is enough to create 20k objects. It is then adapted based on the
383 * precreate request size (see ofd_grant_create()
385 ofd_grant_connect(env, dev->ld_obd->obd_self_export,
386 OST_MAX_PRECREATE * ofd->ofd_dt_conf.ddp_inodespace);
387 rc = next->ld_ops->ldo_recovery_complete(env, next);
391 static struct lu_device_operations ofd_lu_ops = {
392 .ldo_object_alloc = ofd_object_alloc,
393 .ldo_process_config = ofd_process_config,
394 .ldo_recovery_complete = ofd_recovery_complete,
395 .ldo_prepare = ofd_prepare,
398 static int ofd_procfs_init(struct ofd_device *ofd)
400 struct lprocfs_static_vars lvars;
401 struct obd_device *obd = ofd_obd(ofd);
402 cfs_proc_dir_entry_t *entry;
407 /* lprocfs must be setup before the ofd so state can be safely added
408 * to /proc incrementally as the ofd is setup */
409 lprocfs_ofd_init_vars(&lvars);
410 rc = lprocfs_obd_setup(obd, lvars.obd_vars);
412 CERROR("%s: lprocfs_obd_setup failed: %d.\n",
417 rc = lprocfs_alloc_obd_stats(obd, LPROC_OFD_LAST);
419 CERROR("%s: lprocfs_alloc_obd_stats failed: %d.\n",
421 GOTO(obd_cleanup, rc);
424 /* Init OFD private stats here */
425 lprocfs_counter_init(obd->obd_stats, LPROC_OFD_READ_BYTES,
426 LPROCFS_CNTR_AVGMINMAX, "read_bytes", "bytes");
427 lprocfs_counter_init(obd->obd_stats, LPROC_OFD_WRITE_BYTES,
428 LPROCFS_CNTR_AVGMINMAX, "write_bytes", "bytes");
430 rc = lproc_ofd_attach_seqstat(obd);
432 CERROR("%s: create seqstat failed: %d.\n", obd->obd_name, rc);
433 GOTO(obd_cleanup, rc);
436 entry = lprocfs_register("exports", obd->obd_proc_entry, NULL, NULL);
439 CERROR("%s: error %d setting up lprocfs for %s\n",
440 obd->obd_name, rc, "exports");
441 GOTO(obd_cleanup, rc);
443 obd->obd_proc_exports_entry = entry;
445 entry = lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
446 lprocfs_nid_stats_clear_read,
447 lprocfs_nid_stats_clear_write, obd, NULL);
450 CERROR("%s: add proc entry 'clear' failed: %d.\n",
452 GOTO(obd_cleanup, rc);
455 rc = lprocfs_job_stats_init(obd, LPROC_OFD_STATS_LAST,
456 ofd_stats_counter_init);
458 GOTO(remove_entry_clear, rc);
461 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
463 lprocfs_obd_cleanup(obd);
464 lprocfs_free_obd_stats(obd);
469 static void ofd_procfs_fini(struct ofd_device *ofd)
471 struct obd_device *obd = ofd_obd(ofd);
473 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
474 lprocfs_free_per_client_stats(obd);
475 lprocfs_obd_cleanup(obd);
476 lprocfs_free_obd_stats(obd);
477 lprocfs_job_stats_fini(obd);
480 extern int ost_handle(struct ptlrpc_request *req);
482 int ofd_fid_fini(const struct lu_env *env, struct ofd_device *ofd)
484 return seq_site_fini(env, &ofd->ofd_seq_site);
487 int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
489 struct seq_server_site *ss = &ofd->ofd_seq_site;
490 struct lu_device *lu = &ofd->ofd_dt_dev.dd_lu_dev;
491 char *obd_name = ofd_name(ofd);
495 ss = &ofd->ofd_seq_site;
496 lu->ld_site->ld_seq_site = ss;
497 ss->ss_lu = lu->ld_site;
498 ss->ss_node_id = ofd->ofd_lut.lut_lsd.lsd_osd_index;
500 OBD_ALLOC_PTR(ss->ss_server_seq);
501 if (ss->ss_server_seq == NULL)
502 GOTO(out_free, rc = -ENOMEM);
504 OBD_ALLOC(name, strlen(obd_name) + 10);
506 OBD_FREE_PTR(ss->ss_server_seq);
507 ss->ss_server_seq = NULL;
508 GOTO(out_free, rc = -ENOMEM);
511 rc = seq_server_init(ss->ss_server_seq, ofd->ofd_osd, obd_name,
512 LUSTRE_SEQ_SERVER, ss, env);
514 CERROR("%s : seq server init error %d\n", obd_name, rc);
517 ss->ss_server_seq->lss_space.lsr_index = ss->ss_node_id;
519 OBD_ALLOC_PTR(ss->ss_client_seq);
520 if (ss->ss_client_seq == NULL)
521 GOTO(out_free, -ENOMEM);
523 snprintf(name, strlen(obd_name) + 6, "%p-super", obd_name);
524 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_DATA,
527 CERROR("%s : seq client init error %d\n", obd_name, rc);
530 OBD_FREE(name, strlen(obd_name) + 10);
533 rc = seq_server_set_cli(ss->ss_server_seq, ss->ss_client_seq, env);
537 if (ss->ss_server_seq) {
538 seq_server_fini(ss->ss_server_seq, env);
539 OBD_FREE_PTR(ss->ss_server_seq);
540 ss->ss_server_seq = NULL;
543 if (ss->ss_client_seq) {
544 seq_client_fini(ss->ss_client_seq);
545 OBD_FREE_PTR(ss->ss_client_seq);
546 ss->ss_client_seq = NULL;
550 OBD_FREE(name, strlen(obd_name) + 10);
558 static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
559 struct lu_device_type *ldt, struct lustre_cfg *cfg)
561 const char *dev = lustre_cfg_string(cfg, 0);
562 struct ofd_thread_info *info = NULL;
563 struct obd_device *obd;
564 struct obd_statfs *osfs;
569 obd = class_name2obd(dev);
571 CERROR("Cannot find obd with name %s\n", dev);
575 rc = lu_env_refill((struct lu_env *)env);
579 obd->u.obt.obt_magic = OBT_MAGIC;
581 m->ofd_fmd_max_num = OFD_FMD_MAX_NUM_DEFAULT;
582 m->ofd_fmd_max_age = OFD_FMD_MAX_AGE_DEFAULT;
584 spin_lock_init(&m->ofd_flags_lock);
585 m->ofd_raid_degraded = 0;
586 m->ofd_syncjournal = 0;
588 m->ofd_grant_compat_disable = 0;
591 spin_lock_init(&m->ofd_osfs_lock);
592 m->ofd_osfs_age = cfs_time_shift_64(-1000);
593 m->ofd_osfs_unstable = 0;
594 m->ofd_statfs_inflight = 0;
595 m->ofd_osfs_inflight = 0;
598 spin_lock_init(&m->ofd_grant_lock);
599 m->ofd_tot_dirty = 0;
600 m->ofd_tot_granted = 0;
601 m->ofd_tot_pending = 0;
602 m->ofd_seq_count = 0;
604 spin_lock_init(&m->ofd_batch_lock);
605 rwlock_init(&obd->u.filter.fo_sptlrpc_lock);
606 sptlrpc_rule_set_init(&obd->u.filter.fo_sptlrpc_rset);
608 obd->u.filter.fo_fl_oss_capa = 0;
609 CFS_INIT_LIST_HEAD(&obd->u.filter.fo_capa_keys);
610 obd->u.filter.fo_capa_hash = init_capa_hash();
611 if (obd->u.filter.fo_capa_hash == NULL)
614 m->ofd_dt_dev.dd_lu_dev.ld_ops = &ofd_lu_ops;
615 m->ofd_dt_dev.dd_lu_dev.ld_obd = obd;
616 /* set this lu_device to obd, because error handling need it */
617 obd->obd_lu_dev = &m->ofd_dt_dev.dd_lu_dev;
619 rc = ofd_procfs_init(m);
621 CERROR("Can't init ofd lprocfs, rc %d\n", rc);
625 /* No connection accepted until configurations will finish */
626 spin_lock(&obd->obd_dev_lock);
627 obd->obd_no_conn = 1;
628 spin_unlock(&obd->obd_dev_lock);
629 obd->obd_replayable = 1;
630 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
631 char *str = lustre_cfg_string(cfg, 4);
633 if (strchr(str, 'n')) {
634 CWARN("%s: recovery disabled\n", obd->obd_name);
635 obd->obd_replayable = 0;
639 info = ofd_info_init(env, NULL);
643 rc = ofd_stack_init(env, m, cfg);
645 CERROR("Can't init device stack, rc %d\n", rc);
646 GOTO(err_fini_proc, rc);
649 /* populate cached statfs data */
650 osfs = &ofd_info(env)->fti_u.osfs;
651 rc = ofd_statfs_internal(env, m, osfs, 0, NULL);
653 CERROR("%s: can't get statfs data, rc %d\n", obd->obd_name, rc);
654 GOTO(err_fini_stack, rc);
656 if (!IS_PO2(osfs->os_bsize)) {
657 CERROR("%s: blocksize (%d) is not a power of 2\n",
658 obd->obd_name, osfs->os_bsize);
659 GOTO(err_fini_stack, rc = -EPROTO);
661 m->ofd_blockbits = fls(osfs->os_bsize) - 1;
663 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
664 if (osfs->os_bsize * osfs->os_blocks < OFD_PRECREATE_SMALL_FS)
665 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_SMALL;
667 snprintf(info->fti_u.name, sizeof(info->fti_u.name), "filter-%p", m);
668 m->ofd_namespace = ldlm_namespace_new(obd, info->fti_u.name,
669 LDLM_NAMESPACE_SERVER,
670 LDLM_NAMESPACE_GREEDY,
672 if (m->ofd_namespace == NULL)
673 GOTO(err_fini_stack, rc = -ENOMEM);
674 /* set obd_namespace for compatibility with old code */
675 obd->obd_namespace = m->ofd_namespace;
676 ldlm_register_intent(m->ofd_namespace, ofd_intent_policy);
677 m->ofd_namespace->ns_lvbo = &ofd_lvbo;
678 m->ofd_namespace->ns_lvbp = m;
680 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
681 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
683 dt_conf_get(env, m->ofd_osd, &m->ofd_dt_conf);
685 /* Allow at most ddp_grant_reserved% of the available filesystem space
686 * to be granted to clients, so that any errors in the grant overhead
687 * calculations do not allow granting more space to clients than can be
688 * written. Assumes that in aggregate the grant overhead calculations do
689 * not have more than ddp_grant_reserved% estimation error in them. */
691 ofd_grant_ratio_conv(m->ofd_dt_conf.ddp_grant_reserved);
693 rc = tgt_init(env, &m->ofd_lut, obd, m->ofd_osd);
695 GOTO(err_free_ns, rc);
697 rc = ofd_fs_setup(env, m, obd);
699 GOTO(err_fini_lut, rc);
703 tgt_fini(env, &m->ofd_lut);
705 ldlm_namespace_free(m->ofd_namespace, 0, obd->obd_force);
706 obd->obd_namespace = m->ofd_namespace = NULL;
708 ofd_stack_fini(env, m, &m->ofd_osd->dd_lu_dev);
714 static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
716 struct obd_device *obd = ofd_obd(m);
717 struct lu_device *d = &m->ofd_dt_dev.dd_lu_dev;
719 target_recovery_fini(obd);
720 obd_exports_barrier(obd);
721 obd_zombie_barrier();
723 tgt_fini(env, &m->ofd_lut);
724 ofd_fs_cleanup(env, m);
726 ofd_free_capa_keys(m);
727 cleanup_capa_hash(obd->u.filter.fo_capa_hash);
729 if (m->ofd_namespace != NULL) {
730 ldlm_namespace_free(m->ofd_namespace, NULL,
731 d->ld_obd->obd_force);
732 d->ld_obd->obd_namespace = m->ofd_namespace = NULL;
735 ofd_stack_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
737 LASSERT(cfs_atomic_read(&d->ld_ref) == 0);
738 server_put_mount(obd->obd_name, NULL);
742 static struct lu_device *ofd_device_fini(const struct lu_env *env,
746 ofd_fini(env, ofd_dev(d));
750 static struct lu_device *ofd_device_free(const struct lu_env *env,
753 struct ofd_device *m = ofd_dev(d);
755 dt_device_fini(&m->ofd_dt_dev);
760 static struct lu_device *ofd_device_alloc(const struct lu_env *env,
761 struct lu_device_type *t,
762 struct lustre_cfg *cfg)
764 struct ofd_device *m;
770 return ERR_PTR(-ENOMEM);
772 l = &m->ofd_dt_dev.dd_lu_dev;
773 dt_device_init(&m->ofd_dt_dev, t);
774 rc = ofd_init0(env, m, t, cfg);
776 ofd_device_free(env, l);
783 /* thread context key constructor/destructor */
784 LU_KEY_INIT_FINI(ofd, struct ofd_thread_info);
786 static void ofd_key_exit(const struct lu_context *ctx,
787 struct lu_context_key *key, void *data)
789 struct ofd_thread_info *info = data;
791 info->fti_env = NULL;
792 info->fti_exp = NULL;
795 info->fti_transno = 0;
796 info->fti_pre_version = 0;
797 info->fti_obj = NULL;
798 info->fti_has_trans = 0;
799 info->fti_mult_trans = 0;
802 memset(&info->fti_attr, 0, sizeof info->fti_attr);
805 struct lu_context_key ofd_thread_key = {
806 .lct_tags = LCT_DT_THREAD,
807 .lct_init = ofd_key_init,
808 .lct_fini = ofd_key_fini,
809 .lct_exit = ofd_key_exit
812 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
813 LU_TYPE_INIT_FINI(ofd, &ofd_thread_key);
815 static struct lu_device_type_operations ofd_device_type_ops = {
816 .ldto_init = ofd_type_init,
817 .ldto_fini = ofd_type_fini,
819 .ldto_start = ofd_type_start,
820 .ldto_stop = ofd_type_stop,
822 .ldto_device_alloc = ofd_device_alloc,
823 .ldto_device_free = ofd_device_free,
824 .ldto_device_fini = ofd_device_fini
827 static struct lu_device_type ofd_device_type = {
828 .ldt_tags = LU_DEVICE_DT,
829 .ldt_name = LUSTRE_OST_NAME,
830 .ldt_ops = &ofd_device_type_ops,
831 .ldt_ctx_tags = LCT_DT_THREAD
834 int __init ofd_init(void)
836 struct lprocfs_static_vars lvars;
839 rc = lu_kmem_init(ofd_caches);
845 lu_kmem_fini(ofd_caches);
849 lprocfs_ofd_init_vars(&lvars);
851 rc = class_register_type(&ofd_obd_ops, NULL, lvars.module_vars,
852 LUSTRE_OST_NAME, &ofd_device_type);
856 void __exit ofd_exit(void)
859 lu_kmem_fini(ofd_caches);
860 class_unregister_type(LUSTRE_OST_NAME);
863 MODULE_AUTHOR("Whamcloud, Inc. <http://www.whamcloud.com/>");
864 MODULE_DESCRIPTION("Lustre Object Filtering Device");
865 MODULE_LICENSE("GPL");
867 module_init(ofd_init);
868 module_exit(ofd_exit);