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.
31 * Copyright (c) 2012, 2013, Intel Corporation.
32 * Use is subject to license terms.
36 * This file is part of Lustre, http://www.lustre.org/
37 * Lustre is a trademark of Sun Microsystems, Inc.
39 * lustre/osd-zfs/osd_handler.c
40 * Top-level entry points into osd module
42 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
43 * Author: Mike Pershin <tappro@whamcloud.com>
44 * Author: Johann Lombardi <johann@whamcloud.com>
47 #define DEBUG_SUBSYSTEM S_OSD
49 #include <lustre_ver.h>
50 #include <libcfs/libcfs.h>
51 #include <obd_support.h>
52 #include <lustre_net.h>
54 #include <obd_class.h>
55 #include <lustre_disk.h>
56 #include <lustre_fid.h>
57 #include <lustre_param.h>
58 #include <md_object.h>
60 #include "osd_internal.h"
62 #include <sys/dnode.h>
67 #include <sys/spa_impl.h>
68 #include <sys/zfs_znode.h>
69 #include <sys/dmu_tx.h>
70 #include <sys/dmu_objset.h>
71 #include <sys/dsl_prop.h>
72 #include <sys/sa_impl.h>
75 struct lu_context_key osd_key;
77 static char *root_tag = "osd_mount, rootdb";
79 /* Slab for OSD object allocation */
80 struct kmem_cache *osd_object_kmem;
82 static struct lu_kmem_descr osd_caches[] = {
84 .ckd_cache = &osd_object_kmem,
85 .ckd_name = "zfs_osd_obj",
86 .ckd_size = sizeof(struct osd_object)
93 static void arc_prune_func(int64_t bytes, void *private)
95 struct osd_device *od = private;
96 struct lu_site *site = &od->od_site;
100 rc = lu_env_init(&env, LCT_SHRINKER);
102 CERROR("%s: can't initialize shrinker env: rc = %d\n",
107 lu_site_purge(&env, site, (bytes >> 10));
113 * Concurrency: doesn't access mutable data
115 static int osd_root_get(const struct lu_env *env,
116 struct dt_device *dev, struct lu_fid *f)
118 lu_local_obj_fid(f, OSD_FS_ROOT_OID);
123 * OSD object methods.
127 * Concurrency: shouldn't matter.
129 static void osd_trans_commit_cb(void *cb_data, int error)
131 struct osd_thandle *oh = cb_data;
132 struct thandle *th = &oh->ot_super;
133 struct osd_device *osd = osd_dt_dev(th->th_dev);
134 struct lu_device *lud = &th->th_dev->dd_lu_dev;
135 struct dt_txn_commit_cb *dcb, *tmp;
140 if (error == ECANCELED)
141 CWARN("%s: transaction @0x%p was aborted\n",
142 osd_dt_dev(th->th_dev)->od_svname, th);
144 CERROR("%s: transaction @0x%p commit error: rc = %d\n",
145 osd_dt_dev(th->th_dev)->od_svname, th, error);
148 dt_txn_hook_commit(th);
150 /* call per-transaction callbacks if any */
151 cfs_list_for_each_entry_safe(dcb, tmp, &oh->ot_dcb_list, dcb_linkage)
152 dcb->dcb_func(NULL, th, dcb, error);
154 /* Unlike ldiskfs, zfs updates space accounting at commit time.
155 * As a consequence, op_end is called only now to inform the quota slave
156 * component that reserved quota space is now accounted in usage and
157 * should be released. Quota space won't be adjusted at this point since
158 * we can't provide a suitable environment. It will be performed
159 * asynchronously by a lquota thread. */
160 qsd_op_end(NULL, osd->od_quota_slave, &oh->ot_quota_trans);
164 lu_context_exit(&th->th_ctx);
165 lu_context_fini(&th->th_ctx);
171 static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
173 struct osd_thandle *oh;
175 oh = container_of0(th, struct osd_thandle, ot_super);
176 cfs_list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
182 * Concurrency: shouldn't matter.
184 static int osd_trans_start(const struct lu_env *env, struct dt_device *d,
187 struct osd_thandle *oh;
191 oh = container_of0(th, struct osd_thandle, ot_super);
195 rc = dt_txn_hook_start(env, d, th);
199 if (oh->ot_write_commit && OBD_FAIL_CHECK(OBD_FAIL_OST_MAPBLK_ENOSPC))
200 /* Unlike ldiskfs, ZFS checks for available space and returns
201 * -ENOSPC when assigning txg */
204 rc = -dmu_tx_assign(oh->ot_tx, TXG_WAIT);
205 if (unlikely(rc != 0)) {
206 struct osd_device *osd = osd_dt_dev(d);
207 /* dmu will call commit callback with error code during abort */
208 if (!lu_device_is_md(&d->dd_lu_dev) && rc == -ENOSPC)
209 CERROR("%s: failed to start transaction due to ENOSPC. "
210 "Metadata overhead is underestimated or "
211 "grant_ratio is too low.\n", osd->od_svname);
213 CERROR("%s: can't assign tx: rc = %d\n",
216 /* add commit callback */
217 dmu_tx_callback_register(oh->ot_tx, osd_trans_commit_cb, oh);
219 lu_context_init(&th->th_ctx, th->th_tags);
220 lu_context_enter(&th->th_ctx);
221 lu_device_get(&d->dd_lu_dev);
228 * Concurrency: shouldn't matter.
230 static int osd_trans_stop(const struct lu_env *env, struct thandle *th)
232 struct osd_device *osd = osd_dt_dev(th->th_dev);
233 struct osd_thandle *oh;
238 oh = container_of0(th, struct osd_thandle, ot_super);
240 if (oh->ot_assigned == 0) {
242 dmu_tx_abort(oh->ot_tx);
243 osd_object_sa_dirty_rele(oh);
244 /* there won't be any commit, release reserved quota space now,
246 qsd_op_end(env, osd->od_quota_slave, &oh->ot_quota_trans);
251 /* When doing our own inode accounting, the ZAPs storing per-uid/gid
252 * usage are updated at operation execution time, so we should call
253 * qsd_op_end() straight away. Otherwise (for blk accounting maintained
254 * by ZFS and when #inode is estimated from #blks) accounting is updated
255 * at commit time and the call to qsd_op_end() must be delayed */
256 if (oh->ot_quota_trans.lqt_id_cnt > 0 &&
257 !oh->ot_quota_trans.lqt_ids[0].lqi_is_blk &&
258 !osd->od_quota_iused_est)
259 qsd_op_end(env, osd->od_quota_slave, &oh->ot_quota_trans);
261 rc = dt_txn_hook_stop(env, th);
263 CDEBUG(D_OTHER, "%s: transaction hook failed: rc = %d\n",
267 txg = oh->ot_tx->tx_txg;
269 osd_object_sa_dirty_rele(oh);
270 dmu_tx_commit(oh->ot_tx);
273 txg_wait_synced(dmu_objset_pool(osd->od_objset.os), txg);
278 static struct thandle *osd_trans_create(const struct lu_env *env,
279 struct dt_device *dt)
281 struct osd_device *osd = osd_dt_dev(dt);
282 struct osd_thandle *oh;
287 tx = dmu_tx_create(osd->od_objset.os);
289 RETURN(ERR_PTR(-ENOMEM));
291 /* alloc callback data */
295 RETURN(ERR_PTR(-ENOMEM));
299 CFS_INIT_LIST_HEAD(&oh->ot_dcb_list);
300 CFS_INIT_LIST_HEAD(&oh->ot_sa_list);
301 sema_init(&oh->ot_sa_lock, 1);
302 memset(&oh->ot_quota_trans, 0, sizeof(oh->ot_quota_trans));
306 th->th_tags = LCT_TX_HANDLE;
311 * Concurrency: shouldn't matter.
313 int osd_statfs(const struct lu_env *env, struct dt_device *d,
314 struct obd_statfs *osfs)
316 struct osd_device *osd = osd_dt_dev(d);
320 rc = udmu_objset_statfs(&osd->od_objset, osfs);
323 osfs->os_bavail -= min_t(obd_size,
324 OSD_GRANT_FOR_LOCAL_OIDS / osfs->os_bsize,
330 * Concurrency: doesn't access mutable data.
332 static void osd_conf_get(const struct lu_env *env,
333 const struct dt_device *dev,
334 struct dt_device_param *param)
337 * XXX should be taken from not-yet-existing fs abstraction layer.
339 param->ddp_max_name_len = MAXNAMELEN;
340 param->ddp_max_nlink = 1 << 31; /* it's 8byte on a disk */
341 param->ddp_block_shift = 12; /* XXX */
342 param->ddp_mount_type = LDD_MT_ZFS;
344 param->ddp_mntopts = MNTOPT_USERXATTR | MNTOPT_ACL;
345 param->ddp_max_ea_size = DXATTR_MAX_ENTRY_SIZE;
347 /* for maxbytes, report same value as ZPL */
348 param->ddp_maxbytes = MAX_LFS_FILESIZE;
350 /* Default reserved fraction of the available space that should be kept
351 * for error margin. Unfortunately, there are many factors that can
352 * impact the overhead with zfs, so let's be very cautious for now and
353 * reserve 20% of the available space which is not given out as grant.
354 * This tunable can be changed on a live system via procfs if needed. */
355 param->ddp_grant_reserved = 20;
357 /* inodes are dynamically allocated, so we report the per-inode space
358 * consumption to upper layers. This static value is not really accurate
359 * and we should use the same logic as in udmu_objset_statfs() to
360 * estimate the real size consumed by an object */
361 param->ddp_inodespace = OSD_DNODE_EST_COUNT;
362 /* per-fragment overhead to be used by the client code */
363 param->ddp_grant_frag = udmu_blk_insert_cost();
367 * Concurrency: shouldn't matter.
369 static int osd_sync(const struct lu_env *env, struct dt_device *d)
371 struct osd_device *osd = osd_dt_dev(d);
372 CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_ZFS_NAME);
373 txg_wait_synced(dmu_objset_pool(osd->od_objset.os), 0ULL);
377 static int osd_commit_async(const struct lu_env *env, struct dt_device *dev)
379 struct osd_device *osd = osd_dt_dev(dev);
380 tx_state_t *tx = &dmu_objset_pool(osd->od_objset.os)->dp_tx;
383 mutex_enter(&tx->tx_sync_lock);
384 txg = tx->tx_open_txg + 1;
385 if (tx->tx_quiesce_txg_waiting < txg) {
386 tx->tx_quiesce_txg_waiting = txg;
387 cv_broadcast(&tx->tx_quiesce_more_cv);
389 mutex_exit(&tx->tx_sync_lock);
395 * Concurrency: shouldn't matter.
397 static int osd_ro(const struct lu_env *env, struct dt_device *d)
399 struct osd_device *osd = osd_dt_dev(d);
402 CERROR("%s: *** setting device %s read-only ***\n",
403 osd->od_svname, LUSTRE_OSD_ZFS_NAME);
405 spa_freeze(dmu_objset_spa(osd->od_objset.os));
411 * Concurrency: serialization provided by callers.
413 static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
414 int mode, unsigned long timeout, __u32 alg,
415 struct lustre_capa_key *keys)
417 struct osd_device *dev = osd_dt_dev(d);
420 dev->od_fl_capa = mode;
421 dev->od_capa_timeout = timeout;
422 dev->od_capa_alg = alg;
423 dev->od_capa_keys = keys;
428 static struct dt_device_operations osd_dt_ops = {
429 .dt_root_get = osd_root_get,
430 .dt_statfs = osd_statfs,
431 .dt_trans_create = osd_trans_create,
432 .dt_trans_start = osd_trans_start,
433 .dt_trans_stop = osd_trans_stop,
434 .dt_trans_cb_add = osd_trans_cb_add,
435 .dt_conf_get = osd_conf_get,
437 .dt_commit_async = osd_commit_async,
439 .dt_init_capa_ctxt = osd_init_capa_ctxt,
443 * DMU OSD device type methods
445 static int osd_type_init(struct lu_device_type *t)
447 LU_CONTEXT_KEY_INIT(&osd_key);
448 return lu_context_key_register(&osd_key);
451 static void osd_type_fini(struct lu_device_type *t)
453 lu_context_key_degister(&osd_key);
456 static void *osd_key_init(const struct lu_context *ctx,
457 struct lu_context_key *key)
459 struct osd_thread_info *info;
463 info->oti_env = container_of(ctx, struct lu_env, le_ctx);
465 info = ERR_PTR(-ENOMEM);
469 static void osd_key_fini(const struct lu_context *ctx,
470 struct lu_context_key *key, void *data)
472 struct osd_thread_info *info = data;
477 static void osd_key_exit(const struct lu_context *ctx,
478 struct lu_context_key *key, void *data)
480 struct osd_thread_info *info = data;
482 memset(info, 0, sizeof(*info));
485 struct lu_context_key osd_key = {
486 .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL,
487 .lct_init = osd_key_init,
488 .lct_fini = osd_key_fini,
489 .lct_exit = osd_key_exit
492 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
496 /* shutdown quota slave instance associated with the device */
497 if (o->od_quota_slave != NULL) {
498 qsd_fini(env, o->od_quota_slave);
499 o->od_quota_slave = NULL;
505 static void osd_xattr_changed_cb(void *arg, uint64_t newval)
507 struct osd_device *osd = arg;
509 osd->od_xattr_in_sa = (newval == ZFS_XATTR_SA);
512 static int osd_mount(const struct lu_env *env,
513 struct osd_device *o, struct lustre_cfg *cfg)
515 struct dsl_dataset *ds;
516 char *dev = lustre_cfg_string(cfg, 1);
522 if (o->od_objset.os != NULL)
525 if (strlen(dev) >= sizeof(o->od_mntdev))
528 strcpy(o->od_mntdev, dev);
529 strncpy(o->od_svname, lustre_cfg_string(cfg, 4),
530 sizeof(o->od_svname) - 1);
532 if (server_name_is_ost(o->od_svname))
535 rc = -udmu_objset_open(o->od_mntdev, &o->od_objset);
537 CERROR("can't open objset %s: %d\n", o->od_mntdev, rc);
541 ds = dmu_objset_ds(o->od_objset.os);
542 dp = dmu_objset_pool(o->od_objset.os);
545 dsl_pool_config_enter(dp, FTAG);
546 rc = dsl_prop_register(ds, "xattr", osd_xattr_changed_cb, o);
547 dsl_pool_config_exit(dp, FTAG);
549 CERROR("%s: cat not register xattr callback, ignore: %d\n",
552 rc = __osd_obj2dbuf(env, o->od_objset.os, o->od_objset.root,
555 CERROR("udmu_obj2dbuf() failed with error %d\n", rc);
556 udmu_objset_close(&o->od_objset);
560 o->od_root = rootdb->db_object;
561 sa_buf_rele(rootdb, root_tag);
563 /* 1. initialize oi before any file create or file open */
564 rc = osd_oi_init(env, o);
568 rc = lu_site_init(&o->od_site, osd2lu_dev(o));
571 o->od_site.ls_bottom_dev = osd2lu_dev(o);
573 rc = lu_site_init_finish(&o->od_site);
577 rc = osd_convert_root_to_new_seq(env, o);
581 /* Use our own ZAP for inode accounting by default, this can be changed
582 * via procfs to estimate the inode usage from the block usage */
583 o->od_quota_iused_est = 0;
585 rc = osd_procfs_init(o, o->od_svname);
589 o->arc_prune_cb = arc_add_prune_callback(arc_prune_func, o);
591 /* initialize quota slave instance */
592 o->od_quota_slave = qsd_init(env, o->od_svname, &o->od_dt_dev,
594 if (IS_ERR(o->od_quota_slave)) {
595 rc = PTR_ERR(o->od_quota_slave);
596 o->od_quota_slave = NULL;
603 static void osd_umount(const struct lu_env *env, struct osd_device *o)
607 if (cfs_atomic_read(&o->od_zerocopy_alloc))
608 CERROR("%s: lost %d allocated page(s)\n", o->od_svname,
609 cfs_atomic_read(&o->od_zerocopy_alloc));
610 if (cfs_atomic_read(&o->od_zerocopy_loan))
611 CERROR("%s: lost %d loaned abuf(s)\n", o->od_svname,
612 cfs_atomic_read(&o->od_zerocopy_loan));
613 if (cfs_atomic_read(&o->od_zerocopy_pin))
614 CERROR("%s: lost %d pinned dbuf(s)\n", o->od_svname,
615 cfs_atomic_read(&o->od_zerocopy_pin));
617 if (o->od_objset.os != NULL)
618 udmu_objset_close(&o->od_objset);
623 static int osd_device_init0(const struct lu_env *env,
624 struct osd_device *o,
625 struct lustre_cfg *cfg)
627 struct lu_device *l = osd2lu_dev(o);
630 /* if the module was re-loaded, env can loose its keys */
631 rc = lu_env_refill((struct lu_env *) env);
635 l->ld_ops = &osd_lu_ops;
636 o->od_dt_dev.dd_ops = &osd_dt_ops;
638 o->od_capa_hash = init_capa_hash();
639 if (o->od_capa_hash == NULL)
640 GOTO(out, rc = -ENOMEM);
646 static struct lu_device *osd_device_fini(const struct lu_env *env,
647 struct lu_device *dev);
649 static struct lu_device *osd_device_alloc(const struct lu_env *env,
650 struct lu_device_type *type,
651 struct lustre_cfg *cfg)
653 struct osd_device *dev;
658 return ERR_PTR(-ENOMEM);
660 rc = dt_device_init(&dev->od_dt_dev, type);
662 rc = osd_device_init0(env, dev, cfg);
664 rc = osd_mount(env, dev, cfg);
666 osd_device_fini(env, osd2lu_dev(dev));
669 dt_device_fini(&dev->od_dt_dev);
672 if (unlikely(rc != 0))
675 return rc == 0 ? osd2lu_dev(dev) : ERR_PTR(rc);
678 static struct lu_device *osd_device_free(const struct lu_env *env,
681 struct osd_device *o = osd_dev(d);
684 cleanup_capa_hash(o->od_capa_hash);
685 /* XXX: make osd top device in order to release reference */
686 d->ld_site->ls_top_dev = d;
687 lu_site_purge(env, d->ld_site, -1);
688 if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
689 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
690 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
692 lu_site_fini(&o->od_site);
693 dt_device_fini(&o->od_dt_dev);
699 static struct lu_device *osd_device_fini(const struct lu_env *env,
702 struct osd_device *o = osd_dev(d);
703 struct dsl_dataset *ds;
708 osd_shutdown(env, o);
711 if (o->od_objset.os) {
712 ds = dmu_objset_ds(o->od_objset.os);
713 rc = dsl_prop_unregister(ds, "xattr", osd_xattr_changed_cb, o);
715 CERROR("%s: dsl_prop_unregister xattr error %d\n",
717 arc_remove_prune_callback(o->arc_prune_cb);
718 o->arc_prune_cb = NULL;
719 osd_sync(env, lu2dt_dev(d));
720 txg_wait_callbacks(spa_get_dsl(dmu_objset_spa(o->od_objset.os)));
723 rc = osd_procfs_fini(o);
725 CERROR("proc fini error %d\n", rc);
735 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
736 const char *name, struct lu_device *next)
742 * To be removed, setup is performed by osd_device_{init,alloc} and
743 * cleanup is performed by osd_device_{fini,free).
745 static int osd_process_config(const struct lu_env *env,
746 struct lu_device *d, struct lustre_cfg *cfg)
748 struct osd_device *o = osd_dev(d);
752 switch(cfg->lcfg_command) {
754 rc = osd_mount(env, o, cfg);
757 rc = osd_shutdown(env, o);
760 LASSERT(&o->od_dt_dev);
761 rc = class_process_proc_param(PARAM_OSD, lprocfs_osd_obd_vars,
763 if (rc > 0 || rc == -ENOSYS)
764 rc = class_process_proc_param(PARAM_OST,
765 lprocfs_osd_obd_vars,
776 static int osd_recovery_complete(const struct lu_env *env, struct lu_device *d)
778 struct osd_device *osd = osd_dev(d);
782 if (osd->od_quota_slave == NULL)
785 /* start qsd instance on recovery completion, this notifies the quota
786 * slave code that we are about to process new requests now */
787 rc = qsd_start(env, osd->od_quota_slave);
792 * we use exports to track all osd users
794 static int osd_obd_connect(const struct lu_env *env, struct obd_export **exp,
795 struct obd_device *obd, struct obd_uuid *cluuid,
796 struct obd_connect_data *data, void *localdata)
798 struct osd_device *osd = osd_dev(obd->obd_lu_dev);
799 struct lustre_handle conn;
803 CDEBUG(D_CONFIG, "connect #%d\n", osd->od_connects);
805 rc = class_connect(&conn, obd, cluuid);
809 *exp = class_conn2export(&conn);
811 spin_lock(&osd->od_objset.lock);
813 spin_unlock(&osd->od_objset.lock);
819 * once last export (we don't count self-export) disappeared
820 * osd can be released
822 static int osd_obd_disconnect(struct obd_export *exp)
824 struct obd_device *obd = exp->exp_obd;
825 struct osd_device *osd = osd_dev(obd->obd_lu_dev);
829 /* Only disconnect the underlying layers on the final disconnect. */
830 spin_lock(&osd->od_objset.lock);
832 if (osd->od_connects == 0)
834 spin_unlock(&osd->od_objset.lock);
836 rc = class_disconnect(exp); /* bz 9811 */
838 if (rc == 0 && release)
839 class_manual_cleanup(obd);
843 static int osd_prepare(const struct lu_env *env, struct lu_device *pdev,
844 struct lu_device *dev)
846 struct osd_device *osd = osd_dev(dev);
850 if (osd->od_quota_slave != NULL)
851 /* set up quota slave objects */
852 rc = qsd_prepare(env, osd->od_quota_slave);
857 struct lu_device_operations osd_lu_ops = {
858 .ldo_object_alloc = osd_object_alloc,
859 .ldo_process_config = osd_process_config,
860 .ldo_recovery_complete = osd_recovery_complete,
861 .ldo_prepare = osd_prepare,
864 static void osd_type_start(struct lu_device_type *t)
868 static void osd_type_stop(struct lu_device_type *t)
872 static struct lu_device_type_operations osd_device_type_ops = {
873 .ldto_init = osd_type_init,
874 .ldto_fini = osd_type_fini,
876 .ldto_start = osd_type_start,
877 .ldto_stop = osd_type_stop,
879 .ldto_device_alloc = osd_device_alloc,
880 .ldto_device_free = osd_device_free,
882 .ldto_device_init = osd_device_init,
883 .ldto_device_fini = osd_device_fini
886 static struct lu_device_type osd_device_type = {
887 .ldt_tags = LU_DEVICE_DT,
888 .ldt_name = LUSTRE_OSD_ZFS_NAME,
889 .ldt_ops = &osd_device_type_ops,
890 .ldt_ctx_tags = LCT_LOCAL
894 static struct obd_ops osd_obd_device_ops = {
895 .o_owner = THIS_MODULE,
896 .o_connect = osd_obd_connect,
897 .o_disconnect = osd_obd_disconnect
900 int __init osd_init(void)
904 rc = osd_options_init();
908 rc = lu_kmem_init(osd_caches);
912 rc = class_register_type(&osd_obd_device_ops, NULL, NULL,
913 #ifndef HAVE_ONLY_PROCFS_SEQ
914 lprocfs_osd_module_vars,
916 LUSTRE_OSD_ZFS_NAME, &osd_device_type);
918 lu_kmem_fini(osd_caches);
922 void __exit osd_exit(void)
924 class_unregister_type(LUSTRE_OSD_ZFS_NAME);
925 lu_kmem_fini(osd_caches);
928 extern unsigned int osd_oi_count;
929 CFS_MODULE_PARM(osd_oi_count, "i", int, 0444,
930 "Number of Object Index containers to be created, "
931 "it's only valid for new filesystem.");
933 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
934 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_ZFS_NAME")");
935 MODULE_LICENSE("GPL");
937 cfs_module(osd, LUSTRE_VERSION_STRING, osd_init, osd_exit);