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) 2011, 2012 Whamcloud, Inc.
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>
48 # define EXPORT_SYMTAB
50 #define DEBUG_SUBSYSTEM S_OSD
52 #include <lustre_ver.h>
53 #include <libcfs/libcfs.h>
54 #include <obd_support.h>
55 #include <lustre_net.h>
57 #include <obd_class.h>
58 #include <lustre_disk.h>
59 #include <lustre_fid.h>
61 #include "osd_internal.h"
63 #include <sys/dnode.h>
68 #include <sys/spa_impl.h>
69 #include <sys/zfs_znode.h>
70 #include <sys/dmu_tx.h>
71 #include <sys/dmu_objset.h>
72 #include <sys/dsl_prop.h>
73 #include <sys/sa_impl.h>
76 struct lu_context_key osd_key;
78 static char *root_tag = "osd_mount, rootdb";
80 /* Slab for OSD object allocation */
81 cfs_mem_cache_t *osd_object_kmem;
83 static struct lu_kmem_descr osd_caches[] = {
85 .ckd_cache = &osd_object_kmem,
86 .ckd_name = "zfs_osd_obj",
87 .ckd_size = sizeof(struct osd_object)
94 static void arc_prune_func(int64_t bytes, void *private)
96 struct osd_device *od = private;
97 struct lu_site *site = &od->od_site;
101 rc = lu_env_init(&env, LCT_SHRINKER);
103 CERROR("%s: can't initialize shrinker env: rc = %d\n",
108 lu_site_purge(&env, site, (bytes >> 10));
114 * Concurrency: doesn't access mutable data
116 static int osd_root_get(const struct lu_env *env,
117 struct dt_device *dev, struct lu_fid *f)
119 lu_local_obj_fid(f, OSD_FS_ROOT_OID);
124 * OSD object methods.
128 * Concurrency: shouldn't matter.
130 static void osd_trans_commit_cb(void *cb_data, int error)
132 struct osd_thandle *oh = cb_data;
133 struct thandle *th = &oh->ot_super;
134 struct osd_device *osd = osd_dt_dev(th->th_dev);
135 struct lu_device *lud = &th->th_dev->dd_lu_dev;
136 struct dt_txn_commit_cb *dcb, *tmp;
141 if (error == ECANCELED)
142 CWARN("%s: transaction @0x%p was aborted\n",
143 osd_dt_dev(th->th_dev)->od_svname, th);
145 CERROR("%s: transaction @0x%p commit error: rc = %d\n",
146 osd_dt_dev(th->th_dev)->od_svname, th, error);
149 dt_txn_hook_commit(th);
151 /* call per-transaction callbacks if any */
152 cfs_list_for_each_entry_safe(dcb, tmp, &oh->ot_dcb_list, dcb_linkage)
153 dcb->dcb_func(NULL, th, dcb, error);
155 /* Unlike ldiskfs, zfs updates space accounting at commit time.
156 * As a consequence, op_end is called only now to inform the quota slave
157 * component that reserved quota space is now accounted in usage and
158 * should be released. Quota space won't be adjusted at this point since
159 * we can't provide a suitable environment. It will be performed
160 * asynchronously by a lquota thread. */
161 qsd_op_end(NULL, osd->od_quota_slave, &oh->ot_quota_trans);
165 lu_context_exit(&th->th_ctx);
166 lu_context_fini(&th->th_ctx);
172 static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
174 struct osd_thandle *oh;
176 oh = container_of0(th, struct osd_thandle, ot_super);
177 cfs_list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
183 * Concurrency: shouldn't matter.
185 static int osd_trans_start(const struct lu_env *env, struct dt_device *d,
188 struct osd_thandle *oh;
192 oh = container_of0(th, struct osd_thandle, ot_super);
196 rc = dt_txn_hook_start(env, d, th);
200 if (oh->ot_write_commit && OBD_FAIL_CHECK(OBD_FAIL_OST_MAPBLK_ENOSPC))
201 /* Unlike ldiskfs, ZFS checks for available space and returns
202 * -ENOSPC when assigning txg */
205 rc = -dmu_tx_assign(oh->ot_tx, TXG_WAIT);
206 if (unlikely(rc != 0)) {
207 struct osd_device *osd = osd_dt_dev(d);
208 /* dmu will call commit callback with error code during abort */
209 if (!lu_device_is_md(&d->dd_lu_dev) && rc == -ENOSPC)
210 CERROR("%s: failed to start transaction due to ENOSPC. "
211 "Metadata overhead is underestimated or "
212 "grant_ratio is too low.\n", osd->od_svname);
214 CERROR("%s: can't assign tx: rc = %d\n",
217 /* add commit callback */
218 dmu_tx_callback_register(oh->ot_tx, osd_trans_commit_cb, oh);
220 lu_context_init(&th->th_ctx, th->th_tags);
221 lu_context_enter(&th->th_ctx);
222 lu_device_get(&d->dd_lu_dev);
229 * Concurrency: shouldn't matter.
231 static int osd_trans_stop(const struct lu_env *env, struct thandle *th)
233 struct osd_device *osd = osd_dt_dev(th->th_dev);
234 struct osd_thandle *oh;
239 oh = container_of0(th, struct osd_thandle, ot_super);
241 if (oh->ot_assigned == 0) {
243 dmu_tx_abort(oh->ot_tx);
244 osd_object_sa_dirty_rele(oh);
245 /* there won't be any commit, release reserved quota space now,
247 qsd_op_end(env, osd->od_quota_slave, &oh->ot_quota_trans);
252 /* When doing our own inode accounting, the ZAPs storing per-uid/gid
253 * usage are updated at operation execution time, so we should call
254 * qsd_op_end() straight away. Otherwise (for blk accounting maintained
255 * by ZFS and when #inode is estimated from #blks) accounting is updated
256 * at commit time and the call to qsd_op_end() must be delayed */
257 if (oh->ot_quota_trans.lqt_id_cnt > 0 &&
258 !oh->ot_quota_trans.lqt_ids[0].lqi_is_blk &&
259 !osd->od_quota_iused_est)
260 qsd_op_end(env, osd->od_quota_slave, &oh->ot_quota_trans);
262 rc = dt_txn_hook_stop(env, th);
264 CDEBUG(D_OTHER, "%s: transaction hook failed: rc = %d\n",
268 txg = oh->ot_tx->tx_txg;
270 osd_object_sa_dirty_rele(oh);
271 dmu_tx_commit(oh->ot_tx);
274 txg_wait_synced(dmu_objset_pool(osd->od_objset.os), txg);
279 static struct thandle *osd_trans_create(const struct lu_env *env,
280 struct dt_device *dt)
282 struct osd_device *osd = osd_dt_dev(dt);
283 struct osd_thandle *oh;
288 tx = dmu_tx_create(osd->od_objset.os);
290 RETURN(ERR_PTR(-ENOMEM));
292 /* alloc callback data */
296 RETURN(ERR_PTR(-ENOMEM));
300 CFS_INIT_LIST_HEAD(&oh->ot_dcb_list);
301 CFS_INIT_LIST_HEAD(&oh->ot_sa_list);
302 sema_init(&oh->ot_sa_lock, 1);
303 memset(&oh->ot_quota_trans, 0, sizeof(oh->ot_quota_trans));
307 th->th_tags = LCT_TX_HANDLE;
312 * Concurrency: shouldn't matter.
314 int osd_statfs(const struct lu_env *env, struct dt_device *d,
315 struct obd_statfs *osfs)
317 struct osd_device *osd = osd_dt_dev(d);
321 rc = udmu_objset_statfs(&osd->od_objset, osfs);
324 osfs->os_bavail -= min_t(obd_size,
325 OSD_GRANT_FOR_LOCAL_OIDS / osfs->os_bsize,
331 * Concurrency: doesn't access mutable data.
333 static void osd_conf_get(const struct lu_env *env,
334 const struct dt_device *dev,
335 struct dt_device_param *param)
338 * XXX should be taken from not-yet-existing fs abstraction layer.
340 param->ddp_max_name_len = MAXNAMELEN;
341 param->ddp_max_nlink = 1 << 31; /* it's 8byte on a disk */
342 param->ddp_block_shift = 12; /* XXX */
343 param->ddp_mount_type = LDD_MT_ZFS;
345 param->ddp_mntopts = MNTOPT_USERXATTR | MNTOPT_ACL;
346 param->ddp_max_ea_size = DXATTR_MAX_ENTRY_SIZE;
348 /* for maxbytes, report same value as ZPL */
349 param->ddp_maxbytes = MAX_LFS_FILESIZE;
351 /* Default reserved fraction of the available space that should be kept
352 * for error margin. Unfortunately, there are many factors that can
353 * impact the overhead with zfs, so let's be very cautious for now and
354 * reserve 20% of the available space which is not given out as grant.
355 * This tunable can be changed on a live system via procfs if needed. */
356 param->ddp_grant_reserved = 20;
358 /* inodes are dynamically allocated, so we report the per-inode space
359 * consumption to upper layers. This static value is not really accurate
360 * and we should use the same logic as in udmu_objset_statfs() to
361 * estimate the real size consumed by an object */
362 param->ddp_inodespace = OSD_DNODE_EST_COUNT;
363 /* per-fragment overhead to be used by the client code */
364 param->ddp_grant_frag = udmu_blk_insert_cost();
366 param->ddp_mnt = NULL;
370 * Concurrency: shouldn't matter.
372 static int osd_sync(const struct lu_env *env, struct dt_device *d)
374 struct osd_device *osd = osd_dt_dev(d);
375 CDEBUG(D_HA, "syncing OSD %s\n", LUSTRE_OSD_ZFS_NAME);
376 txg_wait_synced(dmu_objset_pool(osd->od_objset.os), 0ULL);
380 static int osd_commit_async(const struct lu_env *env, struct dt_device *dev)
382 struct osd_device *osd = osd_dt_dev(dev);
383 tx_state_t *tx = &dmu_objset_pool(osd->od_objset.os)->dp_tx;
386 mutex_enter(&tx->tx_sync_lock);
387 txg = tx->tx_open_txg + 1;
388 if (tx->tx_quiesce_txg_waiting < txg) {
389 tx->tx_quiesce_txg_waiting = txg;
390 cv_broadcast(&tx->tx_quiesce_more_cv);
392 mutex_exit(&tx->tx_sync_lock);
398 * Concurrency: shouldn't matter.
400 static int osd_ro(const struct lu_env *env, struct dt_device *d)
402 struct osd_device *osd = osd_dt_dev(d);
405 CERROR("%s: *** setting device %s read-only ***\n",
406 osd->od_svname, LUSTRE_OSD_ZFS_NAME);
408 spa_freeze(dmu_objset_spa(osd->od_objset.os));
414 * Concurrency: serialization provided by callers.
416 static int osd_init_capa_ctxt(const struct lu_env *env, struct dt_device *d,
417 int mode, unsigned long timeout, __u32 alg,
418 struct lustre_capa_key *keys)
420 struct osd_device *dev = osd_dt_dev(d);
423 dev->od_fl_capa = mode;
424 dev->od_capa_timeout = timeout;
425 dev->od_capa_alg = alg;
426 dev->od_capa_keys = keys;
431 static struct dt_device_operations osd_dt_ops = {
432 .dt_root_get = osd_root_get,
433 .dt_statfs = osd_statfs,
434 .dt_trans_create = osd_trans_create,
435 .dt_trans_start = osd_trans_start,
436 .dt_trans_stop = osd_trans_stop,
437 .dt_trans_cb_add = osd_trans_cb_add,
438 .dt_conf_get = osd_conf_get,
440 .dt_commit_async = osd_commit_async,
442 .dt_init_capa_ctxt = osd_init_capa_ctxt,
446 * DMU OSD device type methods
448 static int osd_type_init(struct lu_device_type *t)
450 LU_CONTEXT_KEY_INIT(&osd_key);
451 return lu_context_key_register(&osd_key);
454 static void osd_type_fini(struct lu_device_type *t)
456 lu_context_key_degister(&osd_key);
459 static void *osd_key_init(const struct lu_context *ctx,
460 struct lu_context_key *key)
462 struct osd_thread_info *info;
466 info->oti_env = container_of(ctx, struct lu_env, le_ctx);
468 info = ERR_PTR(-ENOMEM);
472 static void osd_key_fini(const struct lu_context *ctx,
473 struct lu_context_key *key, void *data)
475 struct osd_thread_info *info = data;
480 static void osd_key_exit(const struct lu_context *ctx,
481 struct lu_context_key *key, void *data)
483 struct osd_thread_info *info = data;
485 memset(info, 0, sizeof(*info));
488 struct lu_context_key osd_key = {
489 .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL,
490 .lct_init = osd_key_init,
491 .lct_fini = osd_key_fini,
492 .lct_exit = osd_key_exit
495 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
499 /* shutdown quota slave instance associated with the device */
500 if (o->od_quota_slave != NULL) {
501 qsd_fini(env, o->od_quota_slave);
502 o->od_quota_slave = NULL;
508 static void osd_xattr_changed_cb(void *arg, uint64_t newval)
510 struct osd_device *osd = arg;
512 osd->od_xattr_in_sa = (newval == ZFS_XATTR_SA);
515 static int osd_mount(const struct lu_env *env,
516 struct osd_device *o, struct lustre_cfg *cfg)
518 struct dsl_dataset *ds;
519 char *dev = lustre_cfg_string(cfg, 1);
524 if (o->od_objset.os != NULL)
527 if (strlen(dev) >= sizeof(o->od_mntdev))
530 strcpy(o->od_mntdev, dev);
531 strncpy(o->od_svname, lustre_cfg_string(cfg, 4),
532 sizeof(o->od_svname) - 1);
534 rc = -udmu_objset_open(o->od_mntdev, &o->od_objset);
536 CERROR("can't open objset %s: %d\n", o->od_mntdev, rc);
540 ds = dmu_objset_ds(o->od_objset.os);
542 rc = dsl_prop_register(ds, "xattr", osd_xattr_changed_cb, o);
544 CERROR("%s: cat not register xattr callback, ignore: %d\n",
547 rc = __osd_obj2dbuf(env, o->od_objset.os, o->od_objset.root,
550 CERROR("udmu_obj2dbuf() failed with error %d\n", rc);
551 udmu_objset_close(&o->od_objset);
555 o->od_root = rootdb->db_object;
556 sa_buf_rele(rootdb, root_tag);
558 /* 1. initialize oi before any file create or file open */
559 rc = osd_oi_init(env, o);
563 rc = lu_site_init(&o->od_site, osd2lu_dev(o));
566 o->od_site.ls_bottom_dev = osd2lu_dev(o);
568 rc = lu_site_init_finish(&o->od_site);
572 /* Use our own ZAP for inode accounting by default, this can be changed
573 * via procfs to estimate the inode usage from the block usage */
574 o->od_quota_iused_est = 0;
576 rc = osd_procfs_init(o, o->od_svname);
580 o->arc_prune_cb = arc_add_prune_callback(arc_prune_func, o);
582 /* initialize quota slave instance */
583 o->od_quota_slave = qsd_init(env, o->od_svname, &o->od_dt_dev,
585 if (IS_ERR(o->od_quota_slave)) {
586 rc = PTR_ERR(o->od_quota_slave);
587 o->od_quota_slave = NULL;
594 static void osd_umount(const struct lu_env *env, struct osd_device *o)
598 if (cfs_atomic_read(&o->od_zerocopy_alloc))
599 CERROR("%s: lost %d allocated page(s)\n", o->od_svname,
600 cfs_atomic_read(&o->od_zerocopy_alloc));
601 if (cfs_atomic_read(&o->od_zerocopy_loan))
602 CERROR("%s: lost %d loaned abuf(s)\n", o->od_svname,
603 cfs_atomic_read(&o->od_zerocopy_loan));
604 if (cfs_atomic_read(&o->od_zerocopy_pin))
605 CERROR("%s: lost %d pinned dbuf(s)\n", o->od_svname,
606 cfs_atomic_read(&o->od_zerocopy_pin));
608 if (o->od_objset.os != NULL)
609 udmu_objset_close(&o->od_objset);
614 static int osd_device_init0(const struct lu_env *env,
615 struct osd_device *o,
616 struct lustre_cfg *cfg)
618 struct lu_device *l = osd2lu_dev(o);
621 /* if the module was re-loaded, env can loose its keys */
622 rc = lu_env_refill((struct lu_env *) env);
626 l->ld_ops = &osd_lu_ops;
627 o->od_dt_dev.dd_ops = &osd_dt_ops;
629 o->od_capa_hash = init_capa_hash();
630 if (o->od_capa_hash == NULL)
631 GOTO(out, rc = -ENOMEM);
637 static struct lu_device *osd_device_fini(const struct lu_env *env,
638 struct lu_device *dev);
640 static struct lu_device *osd_device_alloc(const struct lu_env *env,
641 struct lu_device_type *type,
642 struct lustre_cfg *cfg)
644 struct osd_device *dev;
649 return ERR_PTR(-ENOMEM);
651 rc = dt_device_init(&dev->od_dt_dev, type);
653 rc = osd_device_init0(env, dev, cfg);
655 rc = osd_mount(env, dev, cfg);
657 osd_device_fini(env, osd2lu_dev(dev));
660 dt_device_fini(&dev->od_dt_dev);
663 if (unlikely(rc != 0))
666 return rc == 0 ? osd2lu_dev(dev) : ERR_PTR(rc);
669 static struct lu_device *osd_device_free(const struct lu_env *env,
672 struct osd_device *o = osd_dev(d);
675 cleanup_capa_hash(o->od_capa_hash);
676 /* XXX: make osd top device in order to release reference */
677 d->ld_site->ls_top_dev = d;
678 lu_site_purge(env, d->ld_site, -1);
679 if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
680 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
681 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
683 lu_site_fini(&o->od_site);
684 dt_device_fini(&o->od_dt_dev);
690 static struct lu_device *osd_device_fini(const struct lu_env *env,
693 struct osd_device *o = osd_dev(d);
694 struct dsl_dataset *ds;
699 osd_shutdown(env, o);
702 if (o->od_objset.os) {
703 ds = dmu_objset_ds(o->od_objset.os);
704 rc = dsl_prop_unregister(ds, "xattr", osd_xattr_changed_cb, o);
706 CERROR("%s: dsl_prop_unregister xattr error %d\n",
708 arc_remove_prune_callback(o->arc_prune_cb);
709 o->arc_prune_cb = NULL;
710 osd_sync(env, lu2dt_dev(d));
711 txg_wait_callbacks(spa_get_dsl(dmu_objset_spa(o->od_objset.os)));
714 rc = osd_procfs_fini(o);
716 CERROR("proc fini error %d\n", rc);
726 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
727 const char *name, struct lu_device *next)
733 * To be removed, setup is performed by osd_device_{init,alloc} and
734 * cleanup is performed by osd_device_{fini,free).
736 static int osd_process_config(const struct lu_env *env,
737 struct lu_device *d, struct lustre_cfg *cfg)
739 struct osd_device *o = osd_dev(d);
743 switch(cfg->lcfg_command) {
745 err = osd_mount(env, o, cfg);
748 err = osd_shutdown(env, o);
757 static int osd_recovery_complete(const struct lu_env *env, struct lu_device *d)
759 struct osd_device *osd = osd_dev(d);
763 if (osd->od_quota_slave == NULL)
766 /* start qsd instance on recovery completion, this notifies the quota
767 * slave code that we are about to process new requests now */
768 rc = qsd_start(env, osd->od_quota_slave);
773 * we use exports to track all osd users
775 static int osd_obd_connect(const struct lu_env *env, struct obd_export **exp,
776 struct obd_device *obd, struct obd_uuid *cluuid,
777 struct obd_connect_data *data, void *localdata)
779 struct osd_device *osd = osd_dev(obd->obd_lu_dev);
780 struct lustre_handle conn;
784 CDEBUG(D_CONFIG, "connect #%d\n", osd->od_connects);
786 rc = class_connect(&conn, obd, cluuid);
790 *exp = class_conn2export(&conn);
792 spin_lock(&osd->od_objset.lock);
794 spin_unlock(&osd->od_objset.lock);
800 * once last export (we don't count self-export) disappeared
801 * osd can be released
803 static int osd_obd_disconnect(struct obd_export *exp)
805 struct obd_device *obd = exp->exp_obd;
806 struct osd_device *osd = osd_dev(obd->obd_lu_dev);
810 /* Only disconnect the underlying layers on the final disconnect. */
811 spin_lock(&osd->od_objset.lock);
813 if (osd->od_connects == 0)
815 spin_unlock(&osd->od_objset.lock);
817 rc = class_disconnect(exp); /* bz 9811 */
819 if (rc == 0 && release)
820 class_manual_cleanup(obd);
824 static int osd_prepare(const struct lu_env *env, struct lu_device *pdev,
825 struct lu_device *dev)
827 struct osd_device *osd = osd_dev(dev);
831 if (dev->ld_site && lu_device_is_md(dev->ld_site->ls_top_dev)) {
832 /* MDT/MDD still use old infrastructure to create
834 rc = llo_local_objects_setup(env, lu2md_dev(pdev),
840 if (osd->od_quota_slave != NULL)
841 /* set up quota slave objects */
842 rc = qsd_prepare(env, osd->od_quota_slave);
847 struct lu_device_operations osd_lu_ops = {
848 .ldo_object_alloc = osd_object_alloc,
849 .ldo_process_config = osd_process_config,
850 .ldo_recovery_complete = osd_recovery_complete,
851 .ldo_prepare = osd_prepare,
854 static void osd_type_start(struct lu_device_type *t)
858 static void osd_type_stop(struct lu_device_type *t)
862 static struct lu_device_type_operations osd_device_type_ops = {
863 .ldto_init = osd_type_init,
864 .ldto_fini = osd_type_fini,
866 .ldto_start = osd_type_start,
867 .ldto_stop = osd_type_stop,
869 .ldto_device_alloc = osd_device_alloc,
870 .ldto_device_free = osd_device_free,
872 .ldto_device_init = osd_device_init,
873 .ldto_device_fini = osd_device_fini
876 static struct lu_device_type osd_device_type = {
877 .ldt_tags = LU_DEVICE_DT,
878 .ldt_name = LUSTRE_OSD_ZFS_NAME,
879 .ldt_ops = &osd_device_type_ops,
880 .ldt_ctx_tags = LCT_LOCAL
884 static struct obd_ops osd_obd_device_ops = {
885 .o_owner = THIS_MODULE,
886 .o_connect = osd_obd_connect,
887 .o_disconnect = osd_obd_disconnect
890 int __init osd_init(void)
894 rc = osd_options_init();
898 rc = lu_kmem_init(osd_caches);
902 rc = class_register_type(&osd_obd_device_ops, NULL,
903 lprocfs_osd_module_vars,
904 LUSTRE_OSD_ZFS_NAME, &osd_device_type);
906 lu_kmem_fini(osd_caches);
910 void __exit osd_exit(void)
912 class_unregister_type(LUSTRE_OSD_ZFS_NAME);
913 lu_kmem_fini(osd_caches);
916 extern unsigned int osd_oi_count;
917 CFS_MODULE_PARM(osd_oi_count, "i", int, 0444,
918 "Number of Object Index containers to be created, "
919 "it's only valid for new filesystem.");
921 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
922 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_ZFS_NAME")");
923 MODULE_LICENSE("GPL");
925 cfs_module(osd, LUSTRE_VERSION_STRING, osd_init, osd_exit);