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,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License version 2 for more details. A copy is
14 * included in the COPYING file that accompanied this code.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved
24 * Use is subject to license terms.
27 * lustre/lod/lod_lov.c
29 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
33 # define EXPORT_SYMTAB
35 #define DEBUG_SUBSYSTEM S_MDS
37 #include <obd_class.h>
40 #include "lod_internal.h"
43 * Keep a refcount of lod->lod_osts usage to prevent racing with
44 * addition/deletion. Any function that expects lov_tgts to remain stationary
47 * \param lod - is the lod device from which we want to grab a reference
49 void lod_getref(struct lod_device *lod)
51 cfs_down_read(&lod->lod_rw_sem);
52 cfs_mutex_lock(&lod->lod_mutex);
54 cfs_mutex_unlock(&lod->lod_mutex);
58 * Companion of lod_getref() to release a reference on the lod table.
59 * If this is the last reference and the ost entry was scheduled for deletion,
60 * the descriptor is removed from the array.
62 * \param lod - is the lod device from which we release a reference
64 void lod_putref(struct lod_device *lod)
66 cfs_mutex_lock(&lod->lod_mutex);
68 if (lod->lod_refcount == 0 && lod->lod_death_row) {
69 struct lod_ost_desc *ost_desc, *tmp;
73 CDEBUG(D_CONFIG, "destroying %d lod desc\n",
76 cfs_foreach_bit(lod->lod_ost_bitmap, idx) {
77 ost_desc = OST_TGT(lod, idx);
80 if (!ost_desc->ltd_reap)
83 cfs_list_add(&ost_desc->ltd_kill, &kill);
85 lod_ost_pool_remove(&lod->lod_pool_info, idx);
86 OST_TGT(lod, idx) = NULL;
88 cfs_bitmap_clear(lod->lod_ost_bitmap, idx);
89 if (ost_desc->ltd_active)
90 lod->lod_desc.ld_active_tgt_count--;
93 cfs_mutex_unlock(&lod->lod_mutex);
94 cfs_up_read(&lod->lod_rw_sem);
96 cfs_list_for_each_entry_safe(ost_desc, tmp, &kill, ltd_kill) {
98 cfs_list_del(&ost_desc->ltd_kill);
99 /* XXX: remove from QoS structures */
100 /* disconnect from OSP */
101 rc = obd_disconnect(ost_desc->ltd_exp);
103 CERROR("%s: failed to disconnect %s (%d)\n",
104 lod2obd(lod)->obd_name,
105 obd_uuid2str(&ost_desc->ltd_uuid), rc);
106 OBD_FREE_PTR(ost_desc);
109 cfs_mutex_unlock(&lod->lod_mutex);
110 cfs_up_read(&lod->lod_rw_sem);
114 static int lod_bitmap_resize(struct lod_device *lod, __u32 newsize)
116 cfs_bitmap_t *new_bitmap, *old_bitmap = NULL;
120 /* grab write reference on the lod. Relocating the array requires
121 * exclusive access */
122 cfs_down_write(&lod->lod_rw_sem);
124 if (newsize <= lod->lod_osts_size)
125 /* someone else has already resize the array */
128 /* allocate new bitmap */
129 new_bitmap = CFS_ALLOCATE_BITMAP(newsize);
131 GOTO(out, rc = -ENOMEM);
133 if (lod->lod_osts_size > 0) {
134 /* the bitmap already exists, we need
135 * to copy data from old one */
136 cfs_bitmap_copy(new_bitmap, lod->lod_ost_bitmap);
137 old_bitmap = lod->lod_ost_bitmap;
140 lod->lod_osts_size = newsize;
141 lod->lod_ost_bitmap = new_bitmap;
144 CFS_FREE_BITMAP(old_bitmap);
146 CDEBUG(D_CONFIG, "ost size: %d\n", lod->lod_osts_size);
150 cfs_up_write(&lod->lod_rw_sem);
155 * Connect LOD to a new OSP and add it to the device table.
157 * \param env - is the environment passed by the caller
158 * \param lod - is the LOD device to be connected to the new OSP
159 * \param osp - is the name of OSP device name about to be added
160 * \param index - is the OSP index
161 * \param gen - is the generation number
163 int lod_add_device(const struct lu_env *env, struct lod_device *lod,
164 char *osp, unsigned index, unsigned gen, int active)
166 struct obd_connect_data *data = NULL;
167 struct obd_export *exp = NULL;
168 struct obd_device *obd;
169 struct lu_device *ldev;
172 struct lod_ost_desc *ost_desc;
173 struct obd_uuid obd_uuid;
177 CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, index, gen);
180 CERROR("request to add OBD %s with invalid generation: %d\n",
185 obd_str2uuid(&obd_uuid, osp);
187 obd = class_find_client_obd(&obd_uuid, LUSTRE_OSP_NAME,
188 &lod->lod_dt_dev.dd_lu_dev.ld_obd->obd_uuid);
190 CERROR("can't find %s device\n", osp);
198 data->ocd_connect_flags = OBD_CONNECT_INDEX | OBD_CONNECT_VERSION;
199 data->ocd_version = LUSTRE_VERSION_CODE;
200 data->ocd_index = index;
202 rc = obd_connect(env, &exp, obd, &obd->obd_uuid, data, NULL);
205 CERROR("%s: cannot connect to next dev %s (%d)\n",
206 obd->obd_name, osp, rc);
210 LASSERT(obd->obd_lu_dev);
211 LASSERT(obd->obd_lu_dev->ld_site = lod->lod_dt_dev.dd_lu_dev.ld_site);
213 ldev = obd->obd_lu_dev;
216 /* Allocate ost descriptor and fill it */
217 OBD_ALLOC_PTR(ost_desc);
219 GOTO(out_conn, rc = -ENOMEM);
221 ost_desc->ltd_ost = d;
222 ost_desc->ltd_exp = exp;
223 ost_desc->ltd_uuid = obd->u.cli.cl_target_uuid;
224 ost_desc->ltd_gen = gen;
225 ost_desc->ltd_index = index;
226 ost_desc->ltd_active = active;
229 if (index >= lod->lod_osts_size) {
230 /* we have to increase the size of the lod_osts array */
233 newsize = max(lod->lod_osts_size, (__u32)2);
234 while (newsize < index + 1)
235 newsize = newsize << 1;
237 /* lod_bitmap_resize() needs lod_rw_sem
238 * which we hold with th reference */
241 rc = lod_bitmap_resize(lod, newsize);
248 cfs_mutex_lock(&lod->lod_mutex);
249 if (cfs_bitmap_check(lod->lod_ost_bitmap, index)) {
250 CERROR("%s: device %d is registered already\n", obd->obd_name,
252 GOTO(out_mutex, rc = -EEXIST);
255 if (lod->lod_ost_idx[index / OST_PTRS_PER_BLOCK] == NULL) {
256 OBD_ALLOC_PTR(lod->lod_ost_idx[index / OST_PTRS_PER_BLOCK]);
257 if (lod->lod_ost_idx[index / OST_PTRS_PER_BLOCK] == NULL) {
258 CERROR("can't allocate index to add %s\n",
260 GOTO(out_mutex, rc = -ENOMEM);
264 rc = lod_ost_pool_add(&lod->lod_pool_info, index, lod->lod_osts_size);
266 CERROR("%s: can't set up pool, failed with %d\n",
271 /* The new OST is now a full citizen */
272 if (index >= lod->lod_desc.ld_tgt_count)
273 lod->lod_desc.ld_tgt_count = index + 1;
275 lod->lod_desc.ld_active_tgt_count++;
276 OST_TGT(lod, index) = ost_desc;
277 cfs_bitmap_set(lod->lod_ost_bitmap, index);
279 cfs_mutex_unlock(&lod->lod_mutex);
282 if (lod->lod_recovery_completed)
283 ldev->ld_ops->ldo_recovery_complete(env, ldev);
287 lod_ost_pool_remove(&lod->lod_pool_info, index);
289 cfs_mutex_unlock(&lod->lod_mutex);
292 OBD_FREE_PTR(ost_desc);
300 * helper function to schedule OST removal from the device table
302 static void __lod_del_device(struct lod_device *lod, unsigned idx)
304 LASSERT(OST_TGT(lod,idx));
305 if (OST_TGT(lod,idx)->ltd_reap == 0) {
306 OST_TGT(lod,idx)->ltd_reap = 1;
307 lod->lod_death_row++;
312 * Add support for administratively disabled OST (through the MGS).
313 * Schedule a target for deletion. Disconnection and real removal from the
314 * table takes place in lod_putref() once the last table user release its
317 * \param env - is the environment passed by the caller
318 * \param lod - is the lod device currently connected to the OSP about to be
320 * \param osp - is the name of OSP device about to be removed
321 * \param idx - is the OSP index
322 * \param gen - is the generation number, not used currently
324 int lod_del_device(const struct lu_env *env, struct lod_device *lod,
325 char *osp, unsigned idx, unsigned gen)
327 struct obd_device *obd;
329 struct obd_uuid uuid;
332 CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, idx, gen);
334 obd = class_name2obd(osp);
336 CERROR("can't find %s device\n", osp);
341 CERROR("%s: request to remove OBD %s with invalid generation %d"
342 "\n", obd->obd_name, osp, gen);
346 obd_str2uuid(&uuid, osp);
349 cfs_mutex_lock(&lod->lod_mutex);
350 /* check that the index is allocated in the bitmap */
351 if (!cfs_bitmap_check(lod->lod_ost_bitmap, idx) || !OST_TGT(lod,idx)) {
352 CERROR("%s: device %d is not set up\n", obd->obd_name, idx);
353 GOTO(out, rc = -EINVAL);
356 /* check that the UUID matches */
357 if (!obd_uuid_equals(&uuid, &OST_TGT(lod,idx)->ltd_uuid)) {
358 CERROR("%s: LOD target UUID %s at index %d does not match %s\n",
359 obd->obd_name, obd_uuid2str(&OST_TGT(lod,idx)->ltd_uuid),
361 GOTO(out, rc = -EINVAL);
364 __lod_del_device(lod, idx);
367 cfs_mutex_unlock(&lod->lod_mutex);
372 int lod_ea_store_resize(struct lod_thread_info *info, int size)
374 int round = size_roundup_power2(size);
376 LASSERT(round <= lov_mds_md_size(LOV_MAX_STRIPE_COUNT, LOV_MAGIC_V3));
377 if (info->lti_ea_store) {
378 LASSERT(info->lti_ea_store_size);
379 LASSERT(info->lti_ea_store_size < round);
380 CDEBUG(D_INFO, "EA store size %d is not enough, need %d\n",
381 info->lti_ea_store_size, round);
382 OBD_FREE_LARGE(info->lti_ea_store, info->lti_ea_store_size);
383 info->lti_ea_store = NULL;
384 info->lti_ea_store_size = 0;
387 OBD_ALLOC_LARGE(info->lti_ea_store, round);
388 if (info->lti_ea_store == NULL)
390 info->lti_ea_store_size = round;
394 int lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
396 struct lod_thread_info *info = lod_env_info(env);
397 struct dt_object *next = dt_object_child(&lo->ldo_obj);
403 if (unlikely(info->lti_ea_store_size == 0)) {
404 /* just to enter in allocation block below */
408 info->lti_buf.lb_buf = info->lti_ea_store;
409 info->lti_buf.lb_len = info->lti_ea_store_size;
410 rc = dt_xattr_get(env, next, &info->lti_buf, XATTR_NAME_LOV,
413 /* if object is not striped or inaccessible */
418 /* EA doesn't fit, reallocate new buffer */
419 rc = dt_xattr_get(env, next, &LU_BUF_NULL, XATTR_NAME_LOV,
427 rc = lod_ea_store_resize(info, rc);
437 * allocate array of objects pointers, find/create objects
438 * stripenr and other fields should be initialized by this moment
440 int lod_initialize_objects(const struct lu_env *env, struct lod_object *lo,
441 struct lov_ost_data_v1 *objs)
443 struct lod_thread_info *info = lod_env_info(env);
444 struct lod_device *md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
445 struct lu_object *o, *n;
446 struct lu_device *nd;
451 LASSERT(lo->ldo_stripe == NULL);
452 LASSERT(lo->ldo_stripenr > 0);
453 LASSERT(lo->ldo_stripe_size > 0);
455 i = sizeof(struct dt_object *) * lo->ldo_stripenr;
456 OBD_ALLOC(lo->ldo_stripe, i);
457 if (lo->ldo_stripe == NULL)
458 GOTO(out, rc = -ENOMEM);
459 lo->ldo_stripes_allocated = lo->ldo_stripenr;
461 for (i = 0; i < lo->ldo_stripenr; i++) {
463 info->lti_ostid.oi_id = le64_to_cpu(objs[i].l_object_id);
464 /* XXX: support for DNE? */
465 info->lti_ostid.oi_seq = le64_to_cpu(objs[i].l_object_seq);
466 idx = le64_to_cpu(objs[i].l_ost_idx);
467 fid_ostid_unpack(&info->lti_fid, &info->lti_ostid, idx);
470 * XXX: assertion is left for testing, to make
471 * sure we never process requests till configuration
472 * is completed. to be changed to -EINVAL
476 LASSERT(cfs_bitmap_check(md->lod_ost_bitmap, idx));
477 LASSERT(OST_TGT(md,idx));
478 LASSERTF(OST_TGT(md,idx)->ltd_ost, "idx %d\n", idx);
479 nd = &OST_TGT(md,idx)->ltd_ost->dd_lu_dev;
482 o = lu_object_find_at(env, nd, &info->lti_fid, NULL);
484 GOTO(out, rc = PTR_ERR(o));
486 n = lu_object_locate(o->lo_header, nd->ld_type);
489 lo->ldo_stripe[i] = container_of(n, struct dt_object, do_lu);
497 * Parse striping information stored in lti_ea_store
499 int lod_parse_striping(const struct lu_env *env, struct lod_object *lo,
500 const struct lu_buf *buf)
502 struct lov_mds_md_v1 *lmm;
503 struct lov_ost_data_v1 *objs;
509 LASSERT(buf->lb_buf);
510 LASSERT(buf->lb_len);
512 lmm = (struct lov_mds_md_v1 *) buf->lb_buf;
513 magic = le32_to_cpu(lmm->lmm_magic);
515 if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3)
516 GOTO(out, rc = -EINVAL);
517 if (le32_to_cpu(lmm->lmm_pattern) != LOV_PATTERN_RAID0)
518 GOTO(out, rc = -EINVAL);
520 lo->ldo_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
521 lo->ldo_stripenr = le16_to_cpu(lmm->lmm_stripe_count);
522 lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
524 LASSERT(buf->lb_len >= lov_mds_md_size(lo->ldo_stripenr, magic));
526 if (magic == LOV_MAGIC_V3) {
527 struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *) lmm;
528 objs = &v3->lmm_objects[0];
529 lod_object_set_pool(lo, v3->lmm_pool_name);
531 objs = &lmm->lmm_objects[0];
534 rc = lod_initialize_objects(env, lo, objs);
541 * Load and parse striping information, create in-core representation for the
544 int lod_load_striping(const struct lu_env *env, struct lod_object *lo)
546 struct lod_thread_info *info = lod_env_info(env);
547 struct dt_object *next = dt_object_child(&lo->ldo_obj);
552 * currently this code is supposed to be called from declaration
553 * phase only, thus the object is not expected to be locked by caller
555 dt_write_lock(env, next, 0);
556 /* already initialized? */
557 if (lo->ldo_stripe) {
560 for (i = 0; i < lo->ldo_stripenr; i++)
561 LASSERTF(lo->ldo_stripe[i], "stripe %d is NULL\n", i);
565 if (!dt_object_exists(next))
568 /* only regular files can be striped */
569 if (!(lu_object_attr(lod2lu_obj(lo)) & S_IFREG))
572 LASSERT(lo->ldo_stripenr == 0);
574 rc = lod_get_lov_ea(env, lo);
579 * there is LOV EA (striping information) in this object
580 * let's parse it and create in-core objects for the stripes
582 info->lti_buf.lb_buf = info->lti_ea_store;
583 info->lti_buf.lb_len = info->lti_ea_store_size;
584 rc = lod_parse_striping(env, lo, &info->lti_buf);
586 dt_write_unlock(env, next);
590 void lod_fix_desc_stripe_size(__u64 *val)
592 if (*val < PTLRPC_MAX_BRW_SIZE) {
593 LCONSOLE_WARN("Increasing default stripe size to min %u\n",
594 PTLRPC_MAX_BRW_SIZE);
595 *val = PTLRPC_MAX_BRW_SIZE;
596 } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
597 *val &= ~(LOV_MIN_STRIPE_SIZE - 1);
598 LCONSOLE_WARN("Changing default stripe size to "LPU64" (a "
600 *val, LOV_MIN_STRIPE_SIZE);
604 void lod_fix_desc_stripe_count(__u32 *val)
610 void lod_fix_desc_pattern(__u32 *val)
612 /* from lov_setstripe */
613 if ((*val != 0) && (*val != LOV_PATTERN_RAID0)) {
614 LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val);
619 void lod_fix_desc_qos_maxage(__u32 *val)
623 *val = QOS_DEFAULT_MAXAGE;
626 void lod_fix_desc(struct lov_desc *desc)
628 lod_fix_desc_stripe_size(&desc->ld_default_stripe_size);
629 lod_fix_desc_stripe_count(&desc->ld_default_stripe_count);
630 lod_fix_desc_pattern(&desc->ld_pattern);
631 lod_fix_desc_qos_maxage(&desc->ld_qos_maxage);
634 int lod_pools_init(struct lod_device *lod, struct lustre_cfg *lcfg)
636 struct lprocfs_static_vars lvars = { 0 };
637 struct obd_device *obd;
638 struct lov_desc *desc;
642 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
643 LASSERT(obd != NULL);
644 obd->obd_lu_dev = &lod->lod_dt_dev.dd_lu_dev;
646 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
647 CERROR("LOD setup requires a descriptor\n");
651 desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1);
653 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
654 CERROR("descriptor size wrong: %d > %d\n",
655 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
659 if (desc->ld_magic != LOV_DESC_MAGIC) {
660 if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) {
661 CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n",
662 obd->obd_name, desc);
663 lustre_swab_lov_desc(desc);
665 CERROR("%s: Bad lov desc magic: %#x\n",
666 obd->obd_name, desc->ld_magic);
673 desc->ld_active_tgt_count = 0;
674 lod->lod_desc = *desc;
676 lod->lod_sp_me = LUSTRE_SP_CLI;
678 /* Set up allocation policy (QoS and RR) */
679 CFS_INIT_LIST_HEAD(&lod->lod_qos.lq_oss_list);
680 cfs_init_rwsem(&lod->lod_qos.lq_rw_sem);
681 lod->lod_qos.lq_dirty = 1;
682 lod->lod_qos.lq_rr.lqr_dirty = 1;
683 lod->lod_qos.lq_reset = 1;
684 /* Default priority is toward free space balance */
685 lod->lod_qos.lq_prio_free = 232;
686 /* Default threshold for rr (roughly 17%) */
687 lod->lod_qos.lq_threshold_rr = 43;
688 /* Init statfs fields */
689 OBD_ALLOC_PTR(lod->lod_qos.lq_statfs_data);
690 if (NULL == lod->lod_qos.lq_statfs_data)
692 cfs_waitq_init(&lod->lod_qos.lq_statfs_waitq);
694 /* Set up OST pool environment */
695 lod->lod_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
697 HASH_POOLS_BKT_BITS, 0,
700 &pool_hash_operations,
702 if (!lod->lod_pools_hash_body)
703 GOTO(out_statfs, rc = -ENOMEM);
704 CFS_INIT_LIST_HEAD(&lod->lod_pool_list);
705 lod->lod_pool_count = 0;
706 rc = lod_ost_pool_init(&lod->lod_pool_info, 0);
709 rc = lod_ost_pool_init(&lod->lod_qos.lq_rr.lqr_pool, 0);
711 GOTO(out_pool_info, rc);
713 /* the OST array and bitmap are allocated/grown dynamically as OSTs are
714 * added to the LOD, see lod_add_device() */
715 lod->lod_ost_bitmap = NULL;
716 lod->lod_osts_size = 0;
719 lod->lod_death_row = 0;
720 lod->lod_refcount = 0;
722 lprocfs_lod_init_vars(&lvars);
723 lprocfs_obd_setup(obd, lvars.obd_vars);
726 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
727 0444, &lod_proc_target_fops, obd);
729 CWARN("%s: Error adding the target_obd file %d\n",
733 lod->lod_pool_proc_entry = lprocfs_register("pools",
736 if (IS_ERR(lod->lod_pool_proc_entry)) {
737 int ret = PTR_ERR(lod->lod_pool_proc_entry);
738 lod->lod_pool_proc_entry = NULL;
739 CWARN("%s: Failed to create pool proc file %d\n",
741 rc = lod_pools_fini(lod);
749 lprocfs_obd_cleanup(obd);
750 lod_ost_pool_free(&lod->lod_qos.lq_rr.lqr_pool);
752 lod_ost_pool_free(&lod->lod_pool_info);
754 cfs_hash_putref(lod->lod_pools_hash_body);
756 OBD_FREE_PTR(lod->lod_qos.lq_statfs_data);
760 int lod_pools_fini(struct lod_device *lod)
762 struct obd_device *obd = lod2obd(lod);
763 cfs_list_t *pos, *tmp;
764 struct pool_desc *pool;
767 cfs_list_for_each_safe(pos, tmp, &lod->lod_pool_list) {
768 pool = cfs_list_entry(pos, struct pool_desc, pool_list);
769 /* free pool structs */
770 CDEBUG(D_INFO, "delete pool %p\n", pool);
771 lod_pool_del(obd, pool->pool_name);
774 if (lod->lod_osts_size > 0) {
777 cfs_mutex_lock(&lod->lod_mutex);
778 cfs_foreach_bit(lod->lod_ost_bitmap, idx)
779 __lod_del_device(lod, idx);
780 cfs_mutex_unlock(&lod->lod_mutex);
782 CFS_FREE_BITMAP(lod->lod_ost_bitmap);
783 for (idx = 0; idx < OST_PTRS; idx++) {
784 if (lod->lod_ost_idx[idx])
785 OBD_FREE_PTR(lod->lod_ost_idx[idx]);
787 lod->lod_osts_size = 0;
790 cfs_hash_putref(lod->lod_pools_hash_body);
791 lod_ost_pool_free(&(lod->lod_qos.lq_rr.lqr_pool));
792 lod_ost_pool_free(&lod->lod_pool_info);
794 /* clear pools parent proc entry only after all pools are killed */
795 if (lod->lod_pool_proc_entry) {
796 lprocfs_remove(&lod->lod_pool_proc_entry);
797 lod->lod_pool_proc_entry = NULL;
800 lprocfs_obd_cleanup(obd);
802 OBD_FREE_PTR(lod->lod_qos.lq_statfs_data);