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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/osd-zfs/osd_handler.c
33 * Top-level entry points into osd module
35 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
36 * Author: Mike Pershin <tappro@whamcloud.com>
37 * Author: Johann Lombardi <johann@whamcloud.com>
40 #define DEBUG_SUBSYSTEM S_OSD
42 #include <libcfs/libcfs.h>
43 #include <obd_support.h>
44 #include <lustre_net.h>
46 #include <obd_class.h>
47 #include <lustre_disk.h>
48 #include <lustre_fid.h>
49 #include <uapi/linux/lustre/lustre_param.h>
50 #include <md_object.h>
52 #include "osd_internal.h"
54 #include <sys/dnode.h>
59 #include <sys/spa_impl.h>
60 #include <sys/zfs_znode.h>
61 #include <sys/dmu_tx.h>
62 #include <sys/dmu_objset.h>
63 #include <sys/dsl_prop.h>
64 #include <sys/sa_impl.h>
67 struct lu_context_key osd_key;
69 static int osd_txg_sync_delay_us = -1;
71 /* Slab for OSD object allocation */
72 struct kmem_cache *osd_object_kmem;
74 /* Slab to allocate osd_zap_it */
75 struct kmem_cache *osd_zapit_cachep;
77 static struct lu_kmem_descr osd_caches[] = {
79 .ckd_cache = &osd_object_kmem,
80 .ckd_name = "zfs_osd_obj",
81 .ckd_size = sizeof(struct osd_object)
84 .ckd_cache = &osd_zapit_cachep,
85 .ckd_name = "osd_zapit_cache",
86 .ckd_size = sizeof(struct osd_zap_it)
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 LASSERT(site->ls_obj_hash);
102 rc = lu_env_init(&env, LCT_SHRINKER);
104 CERROR("%s: can't initialize shrinker env: rc = %d\n",
109 lu_site_purge(&env, site, (bytes >> 10));
115 * Concurrency: doesn't access mutable data
117 static int osd_root_get(const struct lu_env *env,
118 struct dt_device *dev, struct lu_fid *f)
120 lu_local_obj_fid(f, OSD_FS_ROOT_OID);
125 * OSD object methods.
129 * Concurrency: shouldn't matter.
131 static void osd_trans_commit_cb(void *cb_data, int error)
133 struct osd_thandle *oh = cb_data;
134 struct thandle *th = &oh->ot_super;
135 struct osd_device *osd = osd_dt_dev(th->th_dev);
136 struct lu_device *lud = &th->th_dev->dd_lu_dev;
137 struct dt_txn_commit_cb *dcb, *tmp;
142 if (error == ECANCELED)
143 CWARN("%s: transaction @0x%p was aborted\n",
144 osd_dt_dev(th->th_dev)->od_svname, th);
146 CERROR("%s: transaction @0x%p commit error: rc = %d\n",
147 osd_dt_dev(th->th_dev)->od_svname, th, error);
150 /* call per-transaction callbacks if any */
151 list_for_each_entry_safe(dcb, tmp, &oh->ot_dcb_list, dcb_linkage) {
152 LASSERTF(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC,
153 "commit callback entry: magic=%x name='%s'\n",
154 dcb->dcb_magic, dcb->dcb_name);
155 list_del_init(&dcb->dcb_linkage);
156 dcb->dcb_func(NULL, th, dcb, error);
159 /* Unlike ldiskfs, zfs updates space accounting at commit time.
160 * As a consequence, op_end is called only now to inform the quota slave
161 * component that reserved quota space is now accounted in usage and
162 * should be released. Quota space won't be adjusted at this point since
163 * we can't provide a suitable environment. It will be performed
164 * asynchronously by a lquota thread. */
165 qsd_op_end(NULL, osd->od_quota_slave_dt, &oh->ot_quota_trans);
166 if (osd->od_quota_slave_md != NULL)
167 qsd_op_end(NULL, osd->od_quota_slave_md, &oh->ot_quota_trans);
176 static int osd_trans_cb_add(struct thandle *th, struct dt_txn_commit_cb *dcb)
178 struct osd_thandle *oh = container_of0(th, struct osd_thandle,
181 LASSERT(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC);
182 LASSERT(&dcb->dcb_func != NULL);
183 if (dcb->dcb_flags & DCB_TRANS_STOP)
184 list_add(&dcb->dcb_linkage, &oh->ot_stop_dcb_list);
186 list_add(&dcb->dcb_linkage, &oh->ot_dcb_list);
192 * Concurrency: shouldn't matter.
194 static int osd_trans_start(const struct lu_env *env, struct dt_device *d,
197 struct osd_device *osd = osd_dt_dev(d);
198 struct osd_thandle *oh;
203 oh = container_of0(th, struct osd_thandle, ot_super);
207 rc = dt_txn_hook_start(env, d, th);
209 CERROR("%s: dt_txn_hook_start failed: rc = %d\n",
214 if (OBD_FAIL_CHECK(OBD_FAIL_OSD_TXN_START))
215 /* Unlike ldiskfs, ZFS checks for available space and returns
216 * -ENOSPC when assigning txg */
219 rc = -dmu_tx_assign(oh->ot_tx, TXG_WAIT);
220 if (unlikely(rc != 0)) {
221 /* dmu will call commit callback with error code during abort */
222 if (!lu_device_is_md(&d->dd_lu_dev) && rc == -ENOSPC)
223 CERROR("%s: failed to start transaction due to ENOSPC"
224 "\n", osd->od_svname);
226 CERROR("%s: can't assign tx: rc = %d\n",
229 /* add commit callback */
230 dmu_tx_callback_register(oh->ot_tx, osd_trans_commit_cb, oh);
232 osd_oti_get(env)->oti_in_trans = 1;
233 lu_device_get(&d->dd_lu_dev);
239 static void osd_unlinked_list_emptify(const struct lu_env *env,
240 struct osd_device *osd,
241 struct list_head *list, bool free)
243 struct osd_object *obj;
246 while (!list_empty(list)) {
247 obj = list_entry(list->next,
248 struct osd_object, oo_unlinked_linkage);
249 LASSERT(obj->oo_dn != NULL);
250 oid = obj->oo_dn->dn_object;
252 list_del_init(&obj->oo_unlinked_linkage);
254 (void)osd_unlinked_object_free(env, osd, oid);
258 static void osd_trans_stop_cb(struct osd_thandle *oth, int result)
260 struct dt_txn_commit_cb *dcb;
261 struct dt_txn_commit_cb *tmp;
263 /* call per-transaction stop callbacks if any */
264 list_for_each_entry_safe(dcb, tmp, &oth->ot_stop_dcb_list,
266 LASSERTF(dcb->dcb_magic == TRANS_COMMIT_CB_MAGIC,
267 "commit callback entry: magic=%x name='%s'\n",
268 dcb->dcb_magic, dcb->dcb_name);
269 list_del_init(&dcb->dcb_linkage);
270 dcb->dcb_func(NULL, &oth->ot_super, dcb, result);
275 * Concurrency: shouldn't matter.
277 static int osd_trans_stop(const struct lu_env *env, struct dt_device *dt,
280 struct osd_device *osd = osd_dt_dev(th->th_dev);
281 bool sync = (th->th_sync != 0);
282 struct osd_thandle *oh;
283 struct list_head unlinked;
288 oh = container_of0(th, struct osd_thandle, ot_super);
289 INIT_LIST_HEAD(&unlinked);
290 list_splice_init(&oh->ot_unlinked_list, &unlinked);
292 osd_oti_get(env)->oti_ins_cache_depth--;
293 /* reset OI cache for safety */
294 if (osd_oti_get(env)->oti_ins_cache_depth == 0)
295 osd_oti_get(env)->oti_ins_cache_used = 0;
297 if (oh->ot_assigned == 0) {
299 CDEBUG(D_OTHER, "%s: transaction is aborted\n", osd->od_svname);
300 osd_trans_stop_cb(oh, th->th_result);
301 dmu_tx_abort(oh->ot_tx);
302 osd_object_sa_dirty_rele(env, oh);
303 osd_unlinked_list_emptify(env, osd, &unlinked, false);
304 /* there won't be any commit, release reserved quota space now,
306 qsd_op_end(env, osd->od_quota_slave_dt, &oh->ot_quota_trans);
307 if (osd->od_quota_slave_md != NULL)
308 qsd_op_end(env, osd->od_quota_slave_md,
309 &oh->ot_quota_trans);
314 rc = dt_txn_hook_stop(env, th);
316 CDEBUG(D_OTHER, "%s: transaction hook failed: rc = %d\n",
319 osd_trans_stop_cb(oh, rc);
322 txg = oh->ot_tx->tx_txg;
324 osd_object_sa_dirty_rele(env, oh);
325 /* XXX: Once dmu_tx_commit() called, oh/th could have been freed
326 * by osd_trans_commit_cb already. */
327 dmu_tx_commit(oh->ot_tx);
328 osd_oti_get(env)->oti_in_trans = 0;
330 osd_unlinked_list_emptify(env, osd, &unlinked, true);
333 if (osd_txg_sync_delay_us < 0)
334 txg_wait_synced(dmu_objset_pool(osd->od_os), txg);
336 udelay(osd_txg_sync_delay_us);
342 static struct thandle *osd_trans_create(const struct lu_env *env,
343 struct dt_device *dt)
345 struct osd_device *osd = osd_dt_dev(dt);
346 struct osd_thandle *oh;
352 CERROR("%s: someone try to start transaction under "
353 "readonly mode, should be disabled.\n",
354 osd_name(osd_dt_dev(dt)));
356 RETURN(ERR_PTR(-EROFS));
359 tx = dmu_tx_create(osd->od_os);
361 RETURN(ERR_PTR(-ENOMEM));
363 /* alloc callback data */
367 RETURN(ERR_PTR(-ENOMEM));
371 INIT_LIST_HEAD(&oh->ot_dcb_list);
372 INIT_LIST_HEAD(&oh->ot_stop_dcb_list);
373 INIT_LIST_HEAD(&oh->ot_unlinked_list);
374 INIT_LIST_HEAD(&oh->ot_sa_list);
375 memset(&oh->ot_quota_trans, 0, sizeof(oh->ot_quota_trans));
380 osd_oti_get(env)->oti_ins_cache_depth++;
385 /* Estimate the total number of objects from a number of blocks */
386 uint64_t osd_objs_count_estimate(uint64_t usedbytes, uint64_t usedobjs,
387 uint64_t nrblocks, uint64_t est_maxblockshift)
389 uint64_t est_totobjs, est_usedblocks, est_usedobjs;
392 * If blocksize is below 64KB (e.g. MDT with recordsize=4096) then
393 * bump the free dnode estimate to assume blocks at least 64KB in
394 * case of a directory-heavy MDT (at 32KB/directory).
396 if (est_maxblockshift < 16) {
397 nrblocks >>= (16 - est_maxblockshift);
398 est_maxblockshift = 16;
402 * Estimate the total number of dnodes from the total blocks count
403 * and the space used per dnode. Since we don't know the overhead
404 * associated with each dnode (xattrs, SAs, VDEV overhead, etc.)
405 * just using DNODE_SHIFT isn't going to give a good estimate.
406 * Instead, compute the current average space usage per dnode, with
407 * an upper and lower cap to avoid unrealistic estimates..
409 * In case there aren't many dnodes or blocks used yet, add a small
410 * correction factor (OSD_DNODE_EST_{COUNT,BLKSHIFT}). This factor
411 * gradually disappears as the number of real dnodes grows. It also
412 * avoids the need to check for divide-by-zero computing dn_per_block.
414 CLASSERT(OSD_DNODE_MIN_BLKSHIFT > 0);
415 CLASSERT(OSD_DNODE_EST_BLKSHIFT > 0);
417 est_usedblocks = ((OSD_DNODE_EST_COUNT << OSD_DNODE_EST_BLKSHIFT) +
418 usedbytes) >> est_maxblockshift;
419 est_usedobjs = OSD_DNODE_EST_COUNT + usedobjs;
421 if (est_usedobjs <= est_usedblocks) {
423 * Average space/dnode more than maximum block size, use max
424 * block size to estimate free dnodes from adjusted free blocks
425 * count. OSTs typically use multiple blocks per dnode so this
428 est_totobjs = nrblocks;
430 } else if (est_usedobjs >= (est_usedblocks << OSD_DNODE_MIN_BLKSHIFT)) {
432 * Average space/dnode smaller than min dnode size (probably
433 * due to metadnode compression), use min dnode size to
434 * estimate object count. MDTs may use only one block per node
435 * so this case applies.
437 est_totobjs = nrblocks << OSD_DNODE_MIN_BLKSHIFT;
441 * Between the extremes, use average space per existing dnode
442 * to compute the number of dnodes that will fit into nrblocks:
444 * est_totobjs = nrblocks * (est_usedobjs / est_usedblocks)
446 * this may overflow 64 bits or become 0 if not handled well.
448 * We know nrblocks is below 2^(64 - blkbits) bits, and
449 * est_usedobjs is under 48 bits due to DN_MAX_OBJECT_SHIFT,
450 * which means that multiplying them may get as large as
451 * 2 ^ 96 for the minimum blocksize of 64KB allowed above.
453 * The ratio of dnodes per block (est_usedobjs / est_usedblocks)
454 * is under 2^(blkbits - DNODE_SHIFT) = blocksize / 512 due to
455 * the limit checks above, so we can safely compute this first.
456 * We care more about accuracy on the MDT (many dnodes/block)
457 * which is good because this is where truncation errors are
458 * smallest. Since both nrblocks and dn_per_block are a
459 * function of blkbits, their product is at most:
461 * 2^(64 - blkbits) * 2^(blkbits - DNODE_SHIFT) = 2^(64 - 9)
463 * so we can safely use 7 bits to compute a fixed-point
464 * fraction and est_totobjs can still fit in 64 bits.
466 unsigned dn_per_block = (est_usedobjs << 7) / est_usedblocks;
468 est_totobjs = (nrblocks * dn_per_block) >> 7;
473 static int osd_objset_statfs(struct osd_device *osd, struct obd_statfs *osfs)
475 struct objset *os = osd->od_os;
476 uint64_t usedbytes, availbytes, usedobjs, availobjs;
477 uint64_t est_availobjs;
481 dmu_objset_space(os, &usedbytes, &availbytes, &usedobjs, &availobjs);
483 memset(osfs, 0, sizeof(*osfs));
485 /* We're a zfs filesystem. */
486 osfs->os_type = UBERBLOCK_MAGIC;
489 * ZFS allows multiple block sizes. For statfs, Linux makes no
490 * proper distinction between bsize and frsize. For calculations
491 * of free and used blocks incorrectly uses bsize instead of frsize,
492 * but bsize is also used as the optimal blocksize. We return the
493 * largest possible block size as IO size for the optimum performance
494 * and scale the free and used blocks count appropriately.
496 osfs->os_bsize = osd->od_max_blksz;
497 bshift = fls64(osfs->os_bsize) - 1;
499 osfs->os_blocks = (usedbytes + availbytes) >> bshift;
500 osfs->os_bfree = availbytes >> bshift;
501 osfs->os_bavail = osfs->os_bfree; /* no extra root reservation */
503 /* Take replication (i.e. number of copies) into account */
504 if (os->os_copies != 0)
505 osfs->os_bavail /= os->os_copies;
508 * Reserve some space so we don't run into ENOSPC due to grants not
509 * accounting for metadata overhead in ZFS, and to avoid fragmentation.
510 * Rather than report this via os_bavail (which makes users unhappy if
511 * they can't fill the filesystem 100%), reduce os_blocks as well.
513 * Reserve 0.78% of total space, at least 16MB for small filesystems,
514 * for internal files to be created/unlinked when space is tight.
516 CLASSERT(OSD_STATFS_RESERVED_SIZE > 0);
517 reserved = OSD_STATFS_RESERVED_SIZE >> bshift;
518 if (likely(osfs->os_blocks >= reserved << OSD_STATFS_RESERVED_SHIFT))
519 reserved = osfs->os_blocks >> OSD_STATFS_RESERVED_SHIFT;
521 osfs->os_blocks -= reserved;
522 osfs->os_bfree -= min(reserved, osfs->os_bfree);
523 osfs->os_bavail -= min(reserved, osfs->os_bavail);
526 * The availobjs value returned from dmu_objset_space() is largely
527 * useless, since it reports the number of objects that might
528 * theoretically still fit into the dataset, independent of minor
529 * issues like how much space is actually available in the pool.
530 * Compute a better estimate in udmu_objs_count_estimate().
532 est_availobjs = osd_objs_count_estimate(usedbytes, usedobjs,
533 osfs->os_bfree, bshift);
535 osfs->os_ffree = min(availobjs, est_availobjs);
536 osfs->os_files = osfs->os_ffree + usedobjs;
538 /* ZFS XXX: fill in backing dataset FSID/UUID
539 memcpy(osfs->os_fsid, .... );*/
541 osfs->os_namelen = MAXNAMELEN;
542 osfs->os_maxbytes = OBD_OBJECT_EOF;
544 if (!spa_writeable(dmu_objset_spa(os)) ||
545 osd->od_dev_set_rdonly || osd->od_prop_rdonly)
546 osfs->os_state |= OS_STATE_READONLY;
552 * Concurrency: shouldn't matter.
554 int osd_statfs(const struct lu_env *env, struct dt_device *d,
555 struct obd_statfs *osfs)
560 rc = osd_objset_statfs(osd_dt_dev(d), osfs);
561 if (unlikely(rc != 0))
564 osfs->os_bavail -= min_t(u64,
565 OSD_GRANT_FOR_LOCAL_OIDS / osfs->os_bsize,
570 static int osd_blk_insert_cost(struct osd_device *osd)
572 int max_blockshift, nr_blkptrshift, bshift;
574 /* max_blockshift is the log2 of the number of blocks needed to reach
575 * the maximum filesize (that's to say 2^64) */
576 bshift = osd_spa_maxblockshift(dmu_objset_spa(osd->od_os));
577 max_blockshift = DN_MAX_OFFSET_SHIFT - bshift;
579 /* nr_blkptrshift is the log2 of the number of block pointers that can
580 * be stored in an indirect block */
581 CLASSERT(DN_MAX_INDBLKSHIFT > SPA_BLKPTRSHIFT);
582 nr_blkptrshift = DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT;
584 /* max_blockshift / nr_blkptrshift is thus the maximum depth of the
585 * tree. We add +1 for rounding purpose.
586 * The tree depth times the indirect block size gives us the maximum
587 * cost of inserting a block in the tree */
588 return (max_blockshift / nr_blkptrshift + 1) * (1<<DN_MAX_INDBLKSHIFT);
592 * Concurrency: doesn't access mutable data.
594 static void osd_conf_get(const struct lu_env *env,
595 const struct dt_device *dev,
596 struct dt_device_param *param)
598 struct osd_device *osd = osd_dt_dev(dev);
601 * XXX should be taken from not-yet-existing fs abstraction layer.
603 param->ddp_max_name_len = MAXNAMELEN;
604 param->ddp_max_nlink = 1 << 31; /* it's 8byte on a disk */
605 param->ddp_symlink_max = PATH_MAX;
606 param->ddp_mount_type = LDD_MT_ZFS;
608 param->ddp_mntopts = MNTOPT_USERXATTR;
609 if (osd->od_posix_acl)
610 param->ddp_mntopts |= MNTOPT_ACL;
611 param->ddp_max_ea_size = DXATTR_MAX_ENTRY_SIZE;
613 /* for maxbytes, report same value as ZPL */
614 param->ddp_maxbytes = MAX_LFS_FILESIZE;
616 /* inodes are dynamically allocated, so we report the per-inode space
617 * consumption to upper layers. This static value is not really accurate
618 * and we should use the same logic as in udmu_objset_statfs() to
619 * estimate the real size consumed by an object */
620 param->ddp_inodespace = OSD_DNODE_EST_COUNT;
621 /* Although ZFS isn't an extent-based filesystem, the metadata overhead
622 * (i.e. 7 levels of indirect blocks, see osd_blk_insert_cost()) should
623 * not be accounted for every single new block insertion.
624 * Instead, the maximum extent size is set to the number of blocks that
625 * can fit into a single contiguous indirect block. There would be some
626 * cases where this crosses indirect blocks, but it also won't have 7
627 * new levels of indirect blocks in that case either, so it will still
628 * have enough reserved space for the extra indirect block */
629 param->ddp_max_extent_blks =
630 (1 << (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT));
631 param->ddp_extent_tax = osd_blk_insert_cost(osd);
633 /* Preferred RPC size for efficient disk IO. 1MB shows good
634 * all-around performance for ZFS, but use blocksize (recordsize)
635 * by default if larger to avoid read-modify-write. */
636 if (osd->od_max_blksz > ONE_MB_BRW_SIZE)
637 param->ddp_brw_size = osd->od_max_blksz;
639 param->ddp_brw_size = ONE_MB_BRW_SIZE;
643 * Concurrency: shouldn't matter.
645 static int osd_sync(const struct lu_env *env, struct dt_device *d)
648 struct osd_device *osd = osd_dt_dev(d);
650 CDEBUG(D_CACHE, "syncing OSD %s\n", LUSTRE_OSD_ZFS_NAME);
651 txg_wait_synced(dmu_objset_pool(osd->od_os), 0ULL);
652 CDEBUG(D_CACHE, "synced OSD %s\n", LUSTRE_OSD_ZFS_NAME);
658 static int osd_commit_async(const struct lu_env *env, struct dt_device *dev)
660 struct osd_device *osd = osd_dt_dev(dev);
661 tx_state_t *tx = &dmu_objset_pool(osd->od_os)->dp_tx;
664 mutex_enter(&tx->tx_sync_lock);
665 txg = tx->tx_open_txg + 1;
666 if (tx->tx_quiesce_txg_waiting < txg) {
667 tx->tx_quiesce_txg_waiting = txg;
668 cv_broadcast(&tx->tx_quiesce_more_cv);
670 mutex_exit(&tx->tx_sync_lock);
676 * Concurrency: shouldn't matter.
678 static int osd_ro(const struct lu_env *env, struct dt_device *d)
680 struct osd_device *osd = osd_dt_dev(d);
683 CERROR("%s: *** setting device %s read-only ***\n",
684 osd->od_svname, LUSTRE_OSD_ZFS_NAME);
685 osd->od_dev_set_rdonly = 1;
686 spa_freeze(dmu_objset_spa(osd->od_os));
691 static struct dt_device_operations osd_dt_ops = {
692 .dt_root_get = osd_root_get,
693 .dt_statfs = osd_statfs,
694 .dt_trans_create = osd_trans_create,
695 .dt_trans_start = osd_trans_start,
696 .dt_trans_stop = osd_trans_stop,
697 .dt_trans_cb_add = osd_trans_cb_add,
698 .dt_conf_get = osd_conf_get,
700 .dt_commit_async = osd_commit_async,
705 * DMU OSD device type methods
707 static int osd_type_init(struct lu_device_type *t)
709 LU_CONTEXT_KEY_INIT(&osd_key);
710 return lu_context_key_register(&osd_key);
713 static void osd_type_fini(struct lu_device_type *t)
715 lu_context_key_degister(&osd_key);
718 static void *osd_key_init(const struct lu_context *ctx,
719 struct lu_context_key *key)
721 struct osd_thread_info *info;
725 info->oti_env = container_of(ctx, struct lu_env, le_ctx);
727 info = ERR_PTR(-ENOMEM);
731 static void osd_key_fini(const struct lu_context *ctx,
732 struct lu_context_key *key, void *data)
734 struct osd_thread_info *info = data;
735 struct osd_idmap_cache *idc = info->oti_ins_cache;
738 LASSERT(info->oti_ins_cache_size > 0);
739 OBD_FREE(idc, sizeof(*idc) * info->oti_ins_cache_size);
740 info->oti_ins_cache = NULL;
741 info->oti_ins_cache_size = 0;
743 lu_buf_free(&info->oti_xattr_lbuf);
747 static void osd_key_exit(const struct lu_context *ctx,
748 struct lu_context_key *key, void *data)
752 struct lu_context_key osd_key = {
753 .lct_tags = LCT_DT_THREAD | LCT_MD_THREAD | LCT_MG_THREAD | LCT_LOCAL,
754 .lct_init = osd_key_init,
755 .lct_fini = osd_key_fini,
756 .lct_exit = osd_key_exit
759 static void osd_fid_fini(const struct lu_env *env, struct osd_device *osd)
761 if (osd->od_cl_seq == NULL)
764 seq_client_fini(osd->od_cl_seq);
765 OBD_FREE_PTR(osd->od_cl_seq);
766 osd->od_cl_seq = NULL;
769 static int osd_shutdown(const struct lu_env *env, struct osd_device *o)
773 /* shutdown quota slave instance associated with the device */
774 if (o->od_quota_slave_md != NULL) {
775 /* complete all in-flight callbacks */
776 osd_sync(env, &o->od_dt_dev);
777 txg_wait_callbacks(spa_get_dsl(dmu_objset_spa(o->od_os)));
778 qsd_fini(env, o->od_quota_slave_md);
779 o->od_quota_slave_md = NULL;
782 if (o->od_quota_slave_dt != NULL) {
783 /* complete all in-flight callbacks */
784 osd_sync(env, &o->od_dt_dev);
785 txg_wait_callbacks(spa_get_dsl(dmu_objset_spa(o->od_os)));
786 qsd_fini(env, o->od_quota_slave_dt);
787 o->od_quota_slave_dt = NULL;
789 osd_fid_fini(env, o);
794 static void osd_xattr_changed_cb(void *arg, uint64_t newval)
796 struct osd_device *osd = arg;
798 osd->od_xattr_in_sa = (newval == ZFS_XATTR_SA);
801 static void osd_recordsize_changed_cb(void *arg, uint64_t newval)
803 struct osd_device *osd = arg;
805 LASSERT(newval <= osd_spa_maxblocksize(dmu_objset_spa(osd->od_os)));
806 LASSERT(newval >= SPA_MINBLOCKSIZE);
807 LASSERT(ISP2(newval));
809 osd->od_max_blksz = newval;
812 static void osd_readonly_changed_cb(void *arg, uint64_t newval)
814 struct osd_device *osd = arg;
816 osd->od_prop_rdonly = !!newval;
819 #ifdef HAVE_DMU_OBJECT_ALLOC_DNSIZE
820 static void osd_dnodesize_changed_cb(void *arg, uint64_t newval)
822 struct osd_device *osd = arg;
824 osd->od_dnsize = newval;
828 * This function unregisters all registered callbacks. It's harmless to
829 * unregister callbacks that were never registered so it is used to safely
830 * unwind a partially completed call to osd_objset_register_callbacks().
832 static void osd_objset_unregister_callbacks(struct osd_device *o)
834 struct dsl_dataset *ds = dmu_objset_ds(o->od_os);
836 (void) dsl_prop_unregister(ds, zfs_prop_to_name(ZFS_PROP_XATTR),
837 osd_xattr_changed_cb, o);
838 (void) dsl_prop_unregister(ds, zfs_prop_to_name(ZFS_PROP_RECORDSIZE),
839 osd_recordsize_changed_cb, o);
840 (void) dsl_prop_unregister(ds, zfs_prop_to_name(ZFS_PROP_READONLY),
841 osd_readonly_changed_cb, o);
842 #ifdef HAVE_DMU_OBJECT_ALLOC_DNSIZE
843 (void) dsl_prop_unregister(ds, zfs_prop_to_name(ZFS_PROP_DNODESIZE),
844 osd_dnodesize_changed_cb, o);
847 if (o->arc_prune_cb != NULL) {
848 arc_remove_prune_callback(o->arc_prune_cb);
849 o->arc_prune_cb = NULL;
854 * Register the required callbacks to be notified when zfs properties
855 * are modified using the 'zfs(8)' command line utility.
857 static int osd_objset_register_callbacks(struct osd_device *o)
859 struct dsl_dataset *ds = dmu_objset_ds(o->od_os);
860 dsl_pool_t *dp = dmu_objset_pool(o->od_os);
866 dsl_pool_config_enter(dp, FTAG);
867 rc = -dsl_prop_register(ds, zfs_prop_to_name(ZFS_PROP_XATTR),
868 osd_xattr_changed_cb, o);
872 rc = -dsl_prop_register(ds, zfs_prop_to_name(ZFS_PROP_RECORDSIZE),
873 osd_recordsize_changed_cb, o);
877 rc = -dsl_prop_register(ds, zfs_prop_to_name(ZFS_PROP_READONLY),
878 osd_readonly_changed_cb, o);
882 #ifdef HAVE_DMU_OBJECT_ALLOC_DNSIZE
883 rc = -dsl_prop_register(ds, zfs_prop_to_name(ZFS_PROP_DNODESIZE),
884 osd_dnodesize_changed_cb, o);
889 o->arc_prune_cb = arc_add_prune_callback(arc_prune_func, o);
891 dsl_pool_config_exit(dp, FTAG);
893 osd_objset_unregister_callbacks(o);
898 static int osd_objset_open(struct osd_device *o)
900 uint64_t version = ZPL_VERSION;
901 uint64_t sa_obj, unlink_obj;
905 rc = -osd_dmu_objset_own(o->od_mntdev, DMU_OST_ZFS,
906 o->od_dt_dev.dd_rdonly ? B_TRUE : B_FALSE,
907 B_FALSE, o, &o->od_os);
910 CERROR("%s: can't open %s\n", o->od_svname, o->od_mntdev);
916 /* Check ZFS version */
917 rc = -zap_lookup(o->od_os, MASTER_NODE_OBJ,
918 ZPL_VERSION_STR, 8, 1, &version);
920 CERROR("%s: Error looking up ZPL VERSION\n", o->od_mntdev);
922 * We can't return ENOENT because that would mean the objset
925 GOTO(out, rc = -EIO);
928 rc = -zap_lookup(o->od_os, MASTER_NODE_OBJ,
929 ZFS_SA_ATTRS, 8, 1, &sa_obj);
933 rc = -sa_setup(o->od_os, sa_obj, zfs_attr_table,
934 ZPL_END, &o->z_attr_table);
938 rc = -zap_lookup(o->od_os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ,
939 8, 1, &o->od_rootid);
941 CERROR("%s: lookup for root failed: rc = %d\n",
946 rc = -zap_lookup(o->od_os, MASTER_NODE_OBJ, ZFS_UNLINKED_SET,
949 CERROR("%s: lookup for %s failed: rc = %d\n",
950 o->od_svname, ZFS_UNLINKED_SET, rc);
954 /* Check that user/group usage tracking is supported */
955 if (!dmu_objset_userused_enabled(o->od_os) ||
956 DMU_USERUSED_DNODE(o->od_os)->dn_type != DMU_OT_USERGROUP_USED ||
957 DMU_GROUPUSED_DNODE(o->od_os)->dn_type != DMU_OT_USERGROUP_USED) {
958 CERROR("%s: Space accounting not supported by this target, "
959 "aborting\n", o->od_svname);
960 GOTO(out, rc = -ENOTSUPP);
963 rc = __osd_obj2dnode(o->od_os, unlink_obj, &o->od_unlinked);
965 CERROR("%s: can't get dnode for unlinked: rc = %d\n",
971 if (rc != 0 && o->od_os != NULL) {
972 osd_dmu_objset_disown(o->od_os, B_FALSE, o);
979 int osd_unlinked_object_free(const struct lu_env *env, struct osd_device *osd,
982 char *key = osd_oti_get(env)->oti_str;
986 if (osd->od_dt_dev.dd_rdonly) {
987 CERROR("%s: someone try to free objects under "
988 "readonly mode, should be disabled.\n", osd_name(osd));
994 rc = -dmu_free_long_range(osd->od_os, oid, 0, DMU_OBJECT_END);
996 CWARN("%s: Cannot truncate %llu: rc = %d\n",
997 osd->od_svname, oid, rc);
1001 tx = dmu_tx_create(osd->od_os);
1002 dmu_tx_mark_netfree(tx);
1003 dmu_tx_hold_free(tx, oid, 0, DMU_OBJECT_END);
1004 osd_tx_hold_zap(tx, osd->od_unlinked->dn_object, osd->od_unlinked,
1006 rc = -dmu_tx_assign(tx, TXG_WAIT);
1008 CWARN("%s: Cannot assign tx for %llu: rc = %d\n",
1009 osd->od_svname, oid, rc);
1013 snprintf(key, sizeof(osd_oti_get(env)->oti_str), "%llx", oid);
1014 rc = osd_zap_remove(osd, osd->od_unlinked->dn_object,
1015 osd->od_unlinked, key, tx);
1017 CWARN("%s: Cannot remove %llu from unlinked set: rc = %d\n",
1018 osd->od_svname, oid, rc);
1022 rc = -dmu_object_free(osd->od_os, oid, tx);
1024 CWARN("%s: Cannot free %llu: rc = %d\n",
1025 osd->od_svname, oid, rc);
1040 osd_unlinked_drain(const struct lu_env *env, struct osd_device *osd)
1043 zap_attribute_t *za = &osd_oti_get(env)->oti_za;
1045 zap_cursor_init(&zc, osd->od_os, osd->od_unlinked->dn_object);
1047 while (zap_cursor_retrieve(&zc, za) == 0) {
1048 /* If cannot free the object, leave it in the unlinked set,
1049 * until the OSD is mounted again when obd_unlinked_drain()
1050 * will be called. */
1051 if (osd_unlinked_object_free(env, osd, za->za_first_integer))
1053 zap_cursor_advance(&zc);
1056 zap_cursor_fini(&zc);
1059 static int osd_mount(const struct lu_env *env,
1060 struct osd_device *o, struct lustre_cfg *cfg)
1062 char *mntdev = lustre_cfg_string(cfg, 1);
1063 char *str = lustre_cfg_string(cfg, 2);
1064 char *svname = lustre_cfg_string(cfg, 4);
1070 if (o->od_os != NULL)
1073 if (mntdev == NULL || svname == NULL)
1076 rc = strlcpy(o->od_mntdev, mntdev, sizeof(o->od_mntdev));
1077 if (rc >= sizeof(o->od_mntdev))
1080 rc = strlcpy(o->od_svname, svname, sizeof(o->od_svname));
1081 if (rc >= sizeof(o->od_svname))
1084 o->od_index_backup_stop = 0;
1085 o->od_index = -1; /* -1 means index is invalid */
1086 rc = server_name2index(o->od_svname, &o->od_index, NULL);
1087 str = strstr(str, ":");
1089 unsigned long flags;
1091 rc = kstrtoul(str + 1, 10, &flags);
1095 if (flags & LMD_FLG_DEV_RDONLY) {
1096 o->od_dt_dev.dd_rdonly = 1;
1097 LCONSOLE_WARN("%s: set dev_rdonly on this device\n",
1101 if (flags & LMD_FLG_NOSCRUB)
1102 o->od_auto_scrub_interval = AS_NEVER;
1105 if (server_name_is_ost(o->od_svname))
1108 rc = osd_objset_open(o);
1112 o->od_xattr_in_sa = B_TRUE;
1113 o->od_max_blksz = osd_spa_maxblocksize(o->od_os->os_spa);
1114 o->od_readcache_max_filesize = OSD_MAX_CACHE_SIZE;
1116 rc = __osd_obj2dnode(o->od_os, o->od_rootid, &rootdn);
1119 o->od_root = rootdn->dn_object;
1120 osd_dnode_rele(rootdn);
1122 rc = __osd_obj2dnode(o->od_os, DMU_USERUSED_OBJECT,
1123 &o->od_userused_dn);
1127 rc = __osd_obj2dnode(o->od_os, DMU_GROUPUSED_OBJECT,
1128 &o->od_groupused_dn);
1132 #ifdef ZFS_PROJINHERIT
1133 if (dmu_objset_projectquota_enabled(o->od_os)) {
1134 rc = __osd_obj2dnode(o->od_os, DMU_PROJECTUSED_OBJECT,
1135 &o->od_projectused_dn);
1136 if (rc && rc != -ENOENT)
1141 rc = lu_site_init(&o->od_site, osd2lu_dev(o));
1144 o->od_site.ls_bottom_dev = osd2lu_dev(o);
1146 rc = lu_site_init_finish(&o->od_site);
1150 rc = osd_objset_register_callbacks(o);
1155 rc = osd_scrub_setup(env, o);
1160 rc = osd_procfs_init(o, o->od_svname);
1164 /* currently it's no need to prepare qsd_instance_md for OST */
1165 if (!o->od_is_ost) {
1166 o->od_quota_slave_md = qsd_init(env, o->od_svname,
1168 o->od_proc_entry, true);
1169 if (IS_ERR(o->od_quota_slave_md)) {
1170 rc = PTR_ERR(o->od_quota_slave_md);
1171 o->od_quota_slave_md = NULL;
1176 o->od_quota_slave_dt = qsd_init(env, o->od_svname, &o->od_dt_dev,
1177 o->od_proc_entry, false);
1179 if (IS_ERR(o->od_quota_slave_dt)) {
1180 if (o->od_quota_slave_md != NULL) {
1181 qsd_fini(env, o->od_quota_slave_md);
1182 o->od_quota_slave_md = NULL;
1185 rc = PTR_ERR(o->od_quota_slave_dt);
1186 o->od_quota_slave_dt = NULL;
1190 #ifdef HAVE_DMU_USEROBJ_ACCOUNTING
1191 if (!osd_dmu_userobj_accounting_available(o))
1192 CWARN("%s: dnode accounting not enabled: "
1193 "enable feature@userobj_accounting in pool\n",
1197 /* parse mount option "noacl", and enable ACL by default */
1198 opts = lustre_cfg_string(cfg, 3);
1199 if (opts == NULL || strstr(opts, "noacl") == NULL)
1200 o->od_posix_acl = 1;
1202 osd_unlinked_drain(env, o);
1204 if (rc && o->od_os) {
1205 osd_dmu_objset_disown(o->od_os, B_FALSE, o);
1212 static void osd_umount(const struct lu_env *env, struct osd_device *o)
1216 if (atomic_read(&o->od_zerocopy_alloc))
1217 CERROR("%s: lost %d allocated page(s)\n", o->od_svname,
1218 atomic_read(&o->od_zerocopy_alloc));
1219 if (atomic_read(&o->od_zerocopy_loan))
1220 CERROR("%s: lost %d loaned abuf(s)\n", o->od_svname,
1221 atomic_read(&o->od_zerocopy_loan));
1222 if (atomic_read(&o->od_zerocopy_pin))
1223 CERROR("%s: lost %d pinned dbuf(s)\n", o->od_svname,
1224 atomic_read(&o->od_zerocopy_pin));
1226 if (o->od_unlinked) {
1227 osd_dnode_rele(o->od_unlinked);
1228 o->od_unlinked = NULL;
1230 if (o->od_userused_dn) {
1231 osd_dnode_rele(o->od_userused_dn);
1232 o->od_userused_dn = NULL;
1234 if (o->od_groupused_dn) {
1235 osd_dnode_rele(o->od_groupused_dn);
1236 o->od_groupused_dn = NULL;
1239 #ifdef ZFS_PROJINHERIT
1240 if (o->od_projectused_dn) {
1241 osd_dnode_rele(o->od_projectused_dn);
1242 o->od_projectused_dn = NULL;
1246 if (o->od_os != NULL) {
1247 if (!o->od_dt_dev.dd_rdonly)
1248 /* force a txg sync to get all commit callbacks */
1249 txg_wait_synced(dmu_objset_pool(o->od_os), 0ULL);
1251 /* close the object set */
1252 osd_dmu_objset_disown(o->od_os, B_FALSE, o);
1259 static int osd_device_init0(const struct lu_env *env,
1260 struct osd_device *o,
1261 struct lustre_cfg *cfg)
1263 struct lu_device *l = osd2lu_dev(o);
1266 /* if the module was re-loaded, env can loose its keys */
1267 rc = lu_env_refill((struct lu_env *) env);
1271 l->ld_ops = &osd_lu_ops;
1272 o->od_dt_dev.dd_ops = &osd_dt_ops;
1273 sema_init(&o->od_otable_sem, 1);
1274 INIT_LIST_HEAD(&o->od_ios_list);
1275 o->od_auto_scrub_interval = AS_DEFAULT;
1281 static struct lu_device *osd_device_fini(const struct lu_env *env,
1282 struct lu_device *dev);
1284 static struct lu_device *osd_device_alloc(const struct lu_env *env,
1285 struct lu_device_type *type,
1286 struct lustre_cfg *cfg)
1288 struct osd_device *dev;
1289 struct osd_seq_list *osl;
1294 return ERR_PTR(-ENOMEM);
1296 osl = &dev->od_seq_list;
1297 INIT_LIST_HEAD(&osl->osl_seq_list);
1298 rwlock_init(&osl->osl_seq_list_lock);
1299 sema_init(&osl->osl_seq_init_sem, 1);
1300 INIT_LIST_HEAD(&dev->od_index_backup_list);
1301 INIT_LIST_HEAD(&dev->od_index_restore_list);
1302 spin_lock_init(&dev->od_lock);
1303 dev->od_index_backup_policy = LIBP_NONE;
1305 rc = dt_device_init(&dev->od_dt_dev, type);
1307 rc = osd_device_init0(env, dev, cfg);
1309 rc = osd_mount(env, dev, cfg);
1311 osd_device_fini(env, osd2lu_dev(dev));
1314 dt_device_fini(&dev->od_dt_dev);
1317 if (unlikely(rc != 0))
1320 return rc == 0 ? osd2lu_dev(dev) : ERR_PTR(rc);
1323 static struct lu_device *osd_device_free(const struct lu_env *env,
1324 struct lu_device *d)
1326 struct osd_device *o = osd_dev(d);
1329 /* XXX: make osd top device in order to release reference */
1330 d->ld_site->ls_top_dev = d;
1331 lu_site_purge(env, d->ld_site, -1);
1332 if (!cfs_hash_is_empty(d->ld_site->ls_obj_hash)) {
1333 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
1334 lu_site_print(env, d->ld_site, &msgdata, lu_cdebug_printer);
1336 lu_site_fini(&o->od_site);
1337 dt_device_fini(&o->od_dt_dev);
1343 static struct lu_device *osd_device_fini(const struct lu_env *env,
1344 struct lu_device *d)
1346 struct osd_device *o = osd_dev(d);
1352 osd_objset_unregister_callbacks(o);
1353 if (!o->od_dt_dev.dd_rdonly) {
1354 osd_sync(env, lu2dt_dev(d));
1356 spa_get_dsl(dmu_objset_spa(o->od_os)));
1360 /* now with all the callbacks completed we can cleanup the remainings */
1361 osd_shutdown(env, o);
1362 osd_scrub_cleanup(env, o);
1364 rc = osd_procfs_fini(o);
1366 CERROR("proc fini error %d\n", rc);
1367 RETURN(ERR_PTR(rc));
1376 static int osd_device_init(const struct lu_env *env, struct lu_device *d,
1377 const char *name, struct lu_device *next)
1383 * To be removed, setup is performed by osd_device_{init,alloc} and
1384 * cleanup is performed by osd_device_{fini,free).
1386 static int osd_process_config(const struct lu_env *env,
1387 struct lu_device *d, struct lustre_cfg *cfg)
1389 struct osd_device *o = osd_dev(d);
1394 switch(cfg->lcfg_command) {
1396 rc = osd_mount(env, o, cfg);
1399 /* For the case LCFG_PRE_CLEANUP is not called in advance,
1400 * that may happend if hit failure during mount process. */
1401 osd_index_backup(env, o, false);
1402 rc = osd_shutdown(env, o);
1405 LASSERT(&o->od_dt_dev);
1406 count = class_modify_config(cfg, PARAM_OSD,
1407 &o->od_dt_dev.dd_kobj);
1409 count = class_modify_config(cfg, PARAM_OST,
1410 &o->od_dt_dev.dd_kobj);
1411 rc = count > 0 ? 0 : count;
1414 case LCFG_PRE_CLEANUP:
1416 osd_index_backup(env, o,
1417 o->od_index_backup_policy != LIBP_NONE);
1427 static int osd_recovery_complete(const struct lu_env *env, struct lu_device *d)
1429 struct osd_device *osd = osd_dev(d);
1433 if (osd->od_quota_slave_md == NULL && osd->od_quota_slave_dt == NULL)
1436 /* start qsd instance on recovery completion, this notifies the quota
1437 * slave code that we are about to process new requests now */
1438 rc = qsd_start(env, osd->od_quota_slave_dt);
1439 if (rc == 0 && osd->od_quota_slave_md != NULL)
1440 rc = qsd_start(env, osd->od_quota_slave_md);
1445 * we use exports to track all osd users
1447 static int osd_obd_connect(const struct lu_env *env, struct obd_export **exp,
1448 struct obd_device *obd, struct obd_uuid *cluuid,
1449 struct obd_connect_data *data, void *localdata)
1451 struct osd_device *osd = osd_dev(obd->obd_lu_dev);
1452 struct lustre_handle conn;
1456 CDEBUG(D_CONFIG, "connect #%d\n", osd->od_connects);
1458 rc = class_connect(&conn, obd, cluuid);
1462 *exp = class_conn2export(&conn);
1464 spin_lock(&obd->obd_dev_lock);
1466 spin_unlock(&obd->obd_dev_lock);
1472 * once last export (we don't count self-export) disappeared
1473 * osd can be released
1475 static int osd_obd_disconnect(struct obd_export *exp)
1477 struct obd_device *obd = exp->exp_obd;
1478 struct osd_device *osd = osd_dev(obd->obd_lu_dev);
1479 int rc, release = 0;
1482 /* Only disconnect the underlying layers on the final disconnect. */
1483 spin_lock(&obd->obd_dev_lock);
1485 if (osd->od_connects == 0)
1487 spin_unlock(&obd->obd_dev_lock);
1489 rc = class_disconnect(exp); /* bz 9811 */
1491 if (rc == 0 && release)
1492 class_manual_cleanup(obd);
1496 static int osd_fid_init(const struct lu_env *env, struct osd_device *osd)
1498 struct seq_server_site *ss = osd_seq_site(osd);
1502 if (osd->od_is_ost || osd->od_cl_seq != NULL)
1505 if (unlikely(ss == NULL))
1508 OBD_ALLOC_PTR(osd->od_cl_seq);
1509 if (osd->od_cl_seq == NULL)
1512 rc = seq_client_init(osd->od_cl_seq, NULL, LUSTRE_SEQ_METADATA,
1513 osd->od_svname, ss->ss_server_seq);
1516 OBD_FREE_PTR(osd->od_cl_seq);
1517 osd->od_cl_seq = NULL;
1520 if (ss->ss_node_id == 0) {
1522 * If the OSD on the sequence controller(MDT0), then allocate
1523 * sequence here, otherwise allocate sequence after connected
1524 * to MDT0 (see mdt_register_lwp_callback()).
1526 rc = seq_server_alloc_meta(osd->od_cl_seq->lcs_srv,
1527 &osd->od_cl_seq->lcs_space, env);
1533 static int osd_prepare(const struct lu_env *env, struct lu_device *pdev,
1534 struct lu_device *dev)
1536 struct osd_device *osd = osd_dev(dev);
1540 if (osd->od_quota_slave_md != NULL) {
1541 /* set up quota slave objects */
1542 rc = qsd_prepare(env, osd->od_quota_slave_md);
1547 if (osd->od_quota_slave_dt != NULL) {
1548 /* set up quota slave objects */
1549 rc = qsd_prepare(env, osd->od_quota_slave_dt);
1554 rc = osd_fid_init(env, osd);
1559 struct lu_device_operations osd_lu_ops = {
1560 .ldo_object_alloc = osd_object_alloc,
1561 .ldo_process_config = osd_process_config,
1562 .ldo_recovery_complete = osd_recovery_complete,
1563 .ldo_prepare = osd_prepare,
1566 static void osd_type_start(struct lu_device_type *t)
1570 static void osd_type_stop(struct lu_device_type *t)
1574 int osd_fid_alloc(const struct lu_env *env, struct obd_export *exp,
1575 struct lu_fid *fid, struct md_op_data *op_data)
1577 struct osd_device *osd = osd_dev(exp->exp_obd->obd_lu_dev);
1579 return seq_client_alloc_fid(env, osd->od_cl_seq, fid);
1582 static struct lu_device_type_operations osd_device_type_ops = {
1583 .ldto_init = osd_type_init,
1584 .ldto_fini = osd_type_fini,
1586 .ldto_start = osd_type_start,
1587 .ldto_stop = osd_type_stop,
1589 .ldto_device_alloc = osd_device_alloc,
1590 .ldto_device_free = osd_device_free,
1592 .ldto_device_init = osd_device_init,
1593 .ldto_device_fini = osd_device_fini
1596 static struct lu_device_type osd_device_type = {
1597 .ldt_tags = LU_DEVICE_DT,
1598 .ldt_name = LUSTRE_OSD_ZFS_NAME,
1599 .ldt_ops = &osd_device_type_ops,
1600 .ldt_ctx_tags = LCT_LOCAL
1604 static struct obd_ops osd_obd_device_ops = {
1605 .o_owner = THIS_MODULE,
1606 .o_connect = osd_obd_connect,
1607 .o_disconnect = osd_obd_disconnect,
1608 .o_fid_alloc = osd_fid_alloc
1611 static int __init osd_init(void)
1615 rc = osd_options_init();
1619 rc = lu_kmem_init(osd_caches);
1623 rc = class_register_type(&osd_obd_device_ops, NULL, true, NULL,
1624 LUSTRE_OSD_ZFS_NAME, &osd_device_type);
1626 lu_kmem_fini(osd_caches);
1630 static void __exit osd_exit(void)
1632 class_unregister_type(LUSTRE_OSD_ZFS_NAME);
1633 lu_kmem_fini(osd_caches);
1636 module_param(osd_oi_count, int, 0444);
1637 MODULE_PARM_DESC(osd_oi_count, "Number of Object Index containers to be created, it's only valid for new filesystem.");
1639 module_param(osd_txg_sync_delay_us, int, 0644);
1640 MODULE_PARM_DESC(osd_txg_sync_delay_us,
1641 "When zero or larger delay N usec instead of doing TXG sync");
1643 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
1644 MODULE_DESCRIPTION("Lustre Object Storage Device ("LUSTRE_OSD_ZFS_NAME")");
1645 MODULE_VERSION(LUSTRE_VERSION_STRING);
1646 MODULE_LICENSE("GPL");
1648 module_init(osd_init);
1649 module_exit(osd_exit);