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 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * lustre/lod/lod_lov.c
31 * A set of helpers to maintain Logical Object Volume (LOV)
32 * Extended Attribute (EA) and known OST targets
34 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
37 #define DEBUG_SUBSYSTEM S_MDS
39 #include <obd_class.h>
40 #include <lustre_lfsck.h>
41 #include <lustre_lmv.h>
42 #include <lustre_swab.h>
44 #include "lod_internal.h"
47 * Increase reference count on the target table.
49 * Increase reference count on the target table usage to prevent racing with
50 * addition/deletion. Any function that expects the table to remain
51 * stationary must take a ref.
53 * \param[in] ltd target table (lod_ost_descs or lod_mdt_descs)
55 void lod_getref(struct lod_tgt_descs *ltd)
57 down_read(<d->ltd_rw_sem);
58 mutex_lock(<d->ltd_mutex);
60 mutex_unlock(<d->ltd_mutex);
64 * Decrease reference count on the target table.
66 * Companion of lod_getref() to release a reference on the target table.
67 * If this is the last reference and the OST entry was scheduled for deletion,
68 * the descriptor is removed from the table.
70 * \param[in] lod LOD device from which we release a reference
71 * \param[in] ltd target table (lod_ost_descs or lod_mdt_descs)
73 void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd)
75 mutex_lock(<d->ltd_mutex);
77 if (ltd->ltd_refcount == 0 && ltd->ltd_death_row) {
78 struct lod_tgt_desc *tgt_desc, *tmp;
79 struct list_head kill;
82 CDEBUG(D_CONFIG, "destroying %d ltd desc\n",
85 INIT_LIST_HEAD(&kill);
87 cfs_foreach_bit(ltd->ltd_tgt_bitmap, idx) {
88 tgt_desc = LTD_TGT(ltd, idx);
91 if (!tgt_desc->ltd_reap)
94 list_add(&tgt_desc->ltd_kill, &kill);
95 LTD_TGT(ltd, idx) = NULL;
96 /*FIXME: only support ost pool for now */
97 if (ltd == &lod->lod_ost_descs) {
98 lod_ost_pool_remove(&lod->lod_pool_info, idx);
99 if (tgt_desc->ltd_active)
100 lod->lod_desc.ld_active_tgt_count--;
103 cfs_bitmap_clear(ltd->ltd_tgt_bitmap, idx);
104 ltd->ltd_death_row--;
106 mutex_unlock(<d->ltd_mutex);
107 up_read(<d->ltd_rw_sem);
109 list_for_each_entry_safe(tgt_desc, tmp, &kill, ltd_kill) {
111 list_del(&tgt_desc->ltd_kill);
112 if (ltd == &lod->lod_ost_descs) {
113 /* remove from QoS structures */
114 rc = qos_del_tgt(lod, tgt_desc);
116 CERROR("%s: qos_del_tgt(%s) failed:"
118 lod2obd(lod)->obd_name,
119 obd_uuid2str(&tgt_desc->ltd_uuid),
122 rc = obd_disconnect(tgt_desc->ltd_exp);
124 CERROR("%s: failed to disconnect %s: rc = %d\n",
125 lod2obd(lod)->obd_name,
126 obd_uuid2str(&tgt_desc->ltd_uuid), rc);
127 OBD_FREE_PTR(tgt_desc);
130 mutex_unlock(<d->ltd_mutex);
131 up_read(<d->ltd_rw_sem);
136 * Expand size of target table.
138 * When the target table is full, we have to extend the table. To do so,
139 * we allocate new memory with some reserve, move data from the old table
140 * to the new one and release memory consumed by the old table.
141 * Notice we take ltd_rw_sem exclusively to ensure atomic switch.
143 * \param[in] ltd target table
144 * \param[in] newsize new size of the table
146 * \retval 0 on success
147 * \retval -ENOMEM if reallocation failed
149 static int ltd_bitmap_resize(struct lod_tgt_descs *ltd, __u32 newsize)
151 struct cfs_bitmap *new_bitmap, *old_bitmap = NULL;
155 /* grab write reference on the lod. Relocating the array requires
156 * exclusive access */
158 down_write(<d->ltd_rw_sem);
159 if (newsize <= ltd->ltd_tgts_size)
160 /* someone else has already resize the array */
163 /* allocate new bitmap */
164 new_bitmap = CFS_ALLOCATE_BITMAP(newsize);
166 GOTO(out, rc = -ENOMEM);
168 if (ltd->ltd_tgts_size > 0) {
169 /* the bitmap already exists, we need
170 * to copy data from old one */
171 cfs_bitmap_copy(new_bitmap, ltd->ltd_tgt_bitmap);
172 old_bitmap = ltd->ltd_tgt_bitmap;
175 ltd->ltd_tgts_size = newsize;
176 ltd->ltd_tgt_bitmap = new_bitmap;
179 CFS_FREE_BITMAP(old_bitmap);
181 CDEBUG(D_CONFIG, "tgt size: %d\n", ltd->ltd_tgts_size);
185 up_write(<d->ltd_rw_sem);
190 * Connect LOD to a new OSP and add it to the target table.
192 * Connect to the OSP device passed, initialize all the internal
193 * structures related to the device and add it to the target table.
195 * \param[in] env execution environment for this thread
196 * \param[in] lod LOD device to be connected to the new OSP
197 * \param[in] osp name of OSP device name to be added
198 * \param[in] index index of the new target
199 * \param[in] gen target's generation number
200 * \param[in] tgt_index OSP's group
201 * \param[in] type type of device (mdc or osc)
202 * \param[in] active state of OSP: 0 - inactive, 1 - active
204 * \retval 0 if added successfully
205 * \retval negative error number on failure
207 int lod_add_device(const struct lu_env *env, struct lod_device *lod,
208 char *osp, unsigned index, unsigned gen, int tgt_index,
209 char *type, int active)
211 struct obd_connect_data *data = NULL;
212 struct obd_export *exp = NULL;
213 struct obd_device *obd;
214 struct lu_device *lu_dev;
215 struct dt_device *dt_dev;
217 struct lod_tgt_desc *tgt_desc;
218 struct lod_tgt_descs *ltd;
219 struct lustre_cfg *lcfg;
220 struct obd_uuid obd_uuid;
225 CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, index, gen);
228 CERROR("request to add OBD %s with invalid generation: %d\n",
233 obd_str2uuid(&obd_uuid, osp);
235 obd = class_find_client_obd(&obd_uuid, LUSTRE_OSP_NAME,
236 &lod->lod_dt_dev.dd_lu_dev.ld_obd->obd_uuid);
238 CERROR("can't find %s device\n", osp);
242 LASSERT(obd->obd_lu_dev != NULL);
243 LASSERT(obd->obd_lu_dev->ld_site == lod->lod_dt_dev.dd_lu_dev.ld_site);
245 lu_dev = obd->obd_lu_dev;
246 dt_dev = lu2dt_dev(lu_dev);
250 GOTO(out_cleanup, rc = -ENOMEM);
252 data->ocd_connect_flags = OBD_CONNECT_INDEX | OBD_CONNECT_VERSION;
253 data->ocd_version = LUSTRE_VERSION_CODE;
254 data->ocd_index = index;
256 if (strcmp(LUSTRE_OSC_NAME, type) == 0) {
258 data->ocd_connect_flags |= OBD_CONNECT_AT |
261 #ifdef HAVE_LRU_RESIZE_SUPPORT
262 OBD_CONNECT_LRU_RESIZE |
265 OBD_CONNECT_REQPORTAL |
266 OBD_CONNECT_SKIP_ORPHAN |
268 OBD_CONNECT_LVB_TYPE |
269 OBD_CONNECT_VERSION |
270 OBD_CONNECT_PINGLESS |
272 OBD_CONNECT_BULK_MBITS;
274 data->ocd_group = tgt_index;
275 ltd = &lod->lod_ost_descs;
277 struct obd_import *imp = obd->u.cli.cl_import;
280 data->ocd_ibits_known = MDS_INODELOCK_UPDATE;
281 data->ocd_connect_flags |= OBD_CONNECT_ACL |
283 OBD_CONNECT_MDS_MDS |
288 OBD_CONNECT_BULK_MBITS;
289 spin_lock(&imp->imp_lock);
290 imp->imp_server_timeout = 1;
291 spin_unlock(&imp->imp_lock);
292 imp->imp_client->cli_request_portal = OUT_PORTAL;
293 CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
295 ltd = &lod->lod_mdt_descs;
298 rc = obd_connect(env, &exp, obd, &obd->obd_uuid, data, NULL);
301 CERROR("%s: cannot connect to next dev %s (%d)\n",
302 obd->obd_name, osp, rc);
303 GOTO(out_cleanup, rc);
306 /* Allocate ost descriptor and fill it */
307 OBD_ALLOC_PTR(tgt_desc);
309 GOTO(out_conn, rc = -ENOMEM);
311 tgt_desc->ltd_tgt = dt_dev;
312 tgt_desc->ltd_exp = exp;
313 tgt_desc->ltd_uuid = obd->u.cli.cl_target_uuid;
314 tgt_desc->ltd_gen = gen;
315 tgt_desc->ltd_index = index;
316 tgt_desc->ltd_active = active;
319 if (index >= ltd->ltd_tgts_size) {
320 /* we have to increase the size of the lod_osts array */
323 newsize = max(ltd->ltd_tgts_size, (__u32)2);
324 while (newsize < index + 1)
325 newsize = newsize << 1;
327 /* lod_bitmap_resize() needs lod_rw_sem
328 * which we hold with th reference */
329 lod_putref(lod, ltd);
331 rc = ltd_bitmap_resize(ltd, newsize);
338 mutex_lock(<d->ltd_mutex);
340 if (cfs_bitmap_check(ltd->ltd_tgt_bitmap, index)) {
341 CERROR("%s: device %d is registered already\n", obd->obd_name,
343 GOTO(out_mutex, rc = -EEXIST);
346 if (ltd->ltd_tgt_idx[index / TGT_PTRS_PER_BLOCK] == NULL) {
347 OBD_ALLOC_PTR(ltd->ltd_tgt_idx[index / TGT_PTRS_PER_BLOCK]);
348 if (ltd->ltd_tgt_idx[index / TGT_PTRS_PER_BLOCK] == NULL) {
349 CERROR("can't allocate index to add %s\n",
351 GOTO(out_mutex, rc = -ENOMEM);
356 /* pool and qos are not supported for MDS stack yet */
357 rc = lod_ost_pool_add(&lod->lod_pool_info, index,
360 CERROR("%s: can't set up pool, failed with %d\n",
365 rc = qos_add_tgt(lod, tgt_desc);
367 CERROR("%s: qos_add_tgt failed with %d\n",
372 /* The new OST is now a full citizen */
373 if (index >= lod->lod_desc.ld_tgt_count)
374 lod->lod_desc.ld_tgt_count = index + 1;
376 lod->lod_desc.ld_active_tgt_count++;
379 LTD_TGT(ltd, index) = tgt_desc;
380 cfs_bitmap_set(ltd->ltd_tgt_bitmap, index);
382 mutex_unlock(<d->ltd_mutex);
383 lod_putref(lod, ltd);
385 if (lod->lod_recovery_completed)
386 lu_dev->ld_ops->ldo_recovery_complete(env, lu_dev);
388 if (!for_ost && lod->lod_initialized) {
389 rc = lod_sub_init_llog(env, lod, tgt_desc->ltd_tgt);
391 CERROR("%s: cannot start llog on %s:rc = %d\n",
392 lod2obd(lod)->obd_name, osp, rc);
397 rc = lfsck_add_target(env, lod->lod_child, dt_dev, exp, index, for_ost);
399 CERROR("Fail to add LFSCK target: name = %s, type = %s, "
400 "index = %u, rc = %d\n", osp, type, index, rc);
401 GOTO(out_fini_llog, rc);
405 lod_sub_fini_llog(env, tgt_desc->ltd_tgt,
406 tgt_desc->ltd_recovery_thread);
409 mutex_lock(<d->ltd_mutex);
411 if (!for_ost && LTD_TGT(ltd, index)->ltd_recovery_thread != NULL) {
412 struct ptlrpc_thread *thread;
414 thread = LTD_TGT(ltd, index)->ltd_recovery_thread;
415 OBD_FREE_PTR(thread);
418 cfs_bitmap_clear(ltd->ltd_tgt_bitmap, index);
419 LTD_TGT(ltd, index) = NULL;
421 lod_ost_pool_remove(&lod->lod_pool_info, index);
424 mutex_unlock(<d->ltd_mutex);
425 lod_putref(lod, ltd);
428 OBD_FREE_PTR(tgt_desc);
432 /* XXX OSP needs us to send down LCFG_CLEANUP because it uses
433 * objects from the MDT stack. See LU-7184. */
434 lcfg = &lod_env_info(env)->lti_lustre_cfg;
435 memset(lcfg, 0, sizeof(*lcfg));
436 lcfg->lcfg_version = LUSTRE_CFG_VERSION;
437 lcfg->lcfg_command = LCFG_CLEANUP;
438 lu_dev->ld_ops->ldo_process_config(env, lu_dev, lcfg);
444 * Schedule target removal from the target table.
446 * Mark the device as dead. The device is not removed here because it may
447 * still be in use. The device will be removed in lod_putref() when the
448 * last reference is released.
450 * \param[in] env execution environment for this thread
451 * \param[in] lod LOD device the target table belongs to
452 * \param[in] ltd target table
453 * \param[in] idx index of the target
454 * \param[in] for_ost type of the target: 0 - MDT, 1 - OST
456 static void __lod_del_device(const struct lu_env *env, struct lod_device *lod,
457 struct lod_tgt_descs *ltd, unsigned idx,
460 LASSERT(LTD_TGT(ltd, idx));
462 lfsck_del_target(env, lod->lod_child, LTD_TGT(ltd, idx)->ltd_tgt,
465 if (!for_ost && LTD_TGT(ltd, idx)->ltd_recovery_thread != NULL) {
466 struct ptlrpc_thread *thread;
468 thread = LTD_TGT(ltd, idx)->ltd_recovery_thread;
469 OBD_FREE_PTR(thread);
472 if (LTD_TGT(ltd, idx)->ltd_reap == 0) {
473 LTD_TGT(ltd, idx)->ltd_reap = 1;
474 ltd->ltd_death_row++;
479 * Schedule removal of all the targets from the given target table.
481 * See more details in the description for __lod_del_device()
483 * \param[in] env execution environment for this thread
484 * \param[in] lod LOD device the target table belongs to
485 * \param[in] ltd target table
486 * \param[in] for_ost type of the target: MDT or OST
490 int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
491 struct lod_tgt_descs *ltd, bool for_ost)
495 if (ltd->ltd_tgts_size <= 0)
498 mutex_lock(<d->ltd_mutex);
499 cfs_foreach_bit(ltd->ltd_tgt_bitmap, idx)
500 __lod_del_device(env, lod, ltd, idx, for_ost);
501 mutex_unlock(<d->ltd_mutex);
502 lod_putref(lod, ltd);
503 CFS_FREE_BITMAP(ltd->ltd_tgt_bitmap);
504 for (idx = 0; idx < TGT_PTRS; idx++) {
505 if (ltd->ltd_tgt_idx[idx])
506 OBD_FREE_PTR(ltd->ltd_tgt_idx[idx]);
508 ltd->ltd_tgts_size = 0;
513 * Remove device by name.
515 * Remove a device identified by \a osp from the target table. Given
516 * the device can be in use, the real deletion happens in lod_putref().
518 * \param[in] env execution environment for this thread
519 * \param[in] lod LOD device to be connected to the new OSP
520 * \param[in] ltd target table
521 * \param[in] osp name of OSP device to be removed
522 * \param[in] idx index of the target
523 * \param[in] gen generation number, not used currently
524 * \param[in] for_ost type of the target: 0 - MDT, 1 - OST
526 * \retval 0 if the device was scheduled for removal
527 * \retval -EINVAL if no device was found
529 int lod_del_device(const struct lu_env *env, struct lod_device *lod,
530 struct lod_tgt_descs *ltd, char *osp, unsigned idx,
531 unsigned gen, bool for_ost)
533 struct obd_device *obd;
535 struct obd_uuid uuid;
538 CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, idx, gen);
540 obd_str2uuid(&uuid, osp);
542 obd = class_find_client_obd(&uuid, LUSTRE_OSP_NAME,
543 &lod->lod_dt_dev.dd_lu_dev.ld_obd->obd_uuid);
545 CERROR("can't find %s device\n", osp);
550 CERROR("%s: request to remove OBD %s with invalid generation %d"
551 "\n", obd->obd_name, osp, gen);
555 obd_str2uuid(&uuid, osp);
558 mutex_lock(<d->ltd_mutex);
559 /* check that the index is allocated in the bitmap */
560 if (!cfs_bitmap_check(ltd->ltd_tgt_bitmap, idx) ||
561 !LTD_TGT(ltd, idx)) {
562 CERROR("%s: device %d is not set up\n", obd->obd_name, idx);
563 GOTO(out, rc = -EINVAL);
566 /* check that the UUID matches */
567 if (!obd_uuid_equals(&uuid, <D_TGT(ltd, idx)->ltd_uuid)) {
568 CERROR("%s: LOD target UUID %s at index %d does not match %s\n",
569 obd->obd_name, obd_uuid2str(<D_TGT(ltd,idx)->ltd_uuid),
571 GOTO(out, rc = -EINVAL);
574 __lod_del_device(env, lod, ltd, idx, for_ost);
577 mutex_unlock(<d->ltd_mutex);
578 lod_putref(lod, ltd);
583 * Resize per-thread storage to hold specified size.
585 * A helper function to resize per-thread temporary storage. This storage
586 * is used to process LOV/LVM EAs and may be quite large. We do not want to
587 * allocate/release it every time, so instead we put it into the env and
588 * reallocate on demand. The memory is released when the correspondent thread
591 * \param[in] info LOD-specific storage in the environment
592 * \param[in] size new size to grow the buffer to
594 * \retval 0 on success, -ENOMEM if reallocation failed
596 int lod_ea_store_resize(struct lod_thread_info *info, size_t size)
598 __u32 round = size_roundup_power2(size);
601 lov_mds_md_size(LOV_MAX_STRIPE_COUNT, LOV_MAGIC_V3));
602 if (info->lti_ea_store) {
603 LASSERT(info->lti_ea_store_size);
604 LASSERT(info->lti_ea_store_size < round);
605 CDEBUG(D_INFO, "EA store size %d is not enough, need %d\n",
606 info->lti_ea_store_size, round);
607 OBD_FREE_LARGE(info->lti_ea_store, info->lti_ea_store_size);
608 info->lti_ea_store = NULL;
609 info->lti_ea_store_size = 0;
612 OBD_ALLOC_LARGE(info->lti_ea_store, round);
613 if (info->lti_ea_store == NULL)
615 info->lti_ea_store_size = round;
620 static void lod_free_comp_buffer(struct lod_layout_component *entries,
621 __u16 count, __u32 bufsize)
623 struct lod_layout_component *entry;
626 for (i = 0; i < count; i++) {
628 if (entry->llc_pool != NULL)
629 lod_set_pool(&entry->llc_pool, NULL);
630 if (entry->llc_ostlist.op_array)
631 OBD_FREE(entry->llc_ostlist.op_array,
632 entry->llc_ostlist.op_size);
633 LASSERT(entry->llc_stripe == NULL);
634 LASSERT(entry->llc_stripes_allocated == 0);
638 OBD_FREE_LARGE(entries, bufsize);
641 void lod_free_def_comp_entries(struct lod_default_striping *lds)
643 lod_free_comp_buffer(lds->lds_def_comp_entries,
644 lds->lds_def_comp_size_cnt,
646 sizeof(*lds->lds_def_comp_entries) *
647 lds->lds_def_comp_size_cnt));
648 lds->lds_def_comp_entries = NULL;
649 lds->lds_def_comp_cnt = 0;
650 lds->lds_def_striping_is_composite = 0;
651 lds->lds_def_comp_size_cnt = 0;
655 * Resize per-thread storage to hold default striping component entries
657 * A helper function to resize per-thread temporary storage. This storage
658 * is used to hold default LOV/LVM EAs and may be quite large. We do not want
659 * to allocate/release it every time, so instead we put it into the env and
660 * reallocate it on demand. The memory is released when the correspondent
661 * thread is finished.
663 * \param[in,out] lds default striping
664 * \param[in] count new component count to grow the buffer to
666 * \retval 0 on success, -ENOMEM if reallocation failed
668 int lod_def_striping_comp_resize(struct lod_default_striping *lds, __u16 count)
670 struct lod_layout_component *entries;
671 __u32 new = size_roundup_power2(sizeof(*lds->lds_def_comp_entries) *
673 __u32 old = size_roundup_power2(sizeof(*lds->lds_def_comp_entries) *
674 lds->lds_def_comp_size_cnt);
679 OBD_ALLOC_LARGE(entries, new);
683 if (lds->lds_def_comp_entries != NULL) {
684 CDEBUG(D_INFO, "default striping component size %d is not "
685 "enough, need %d\n", old, new);
686 lod_free_def_comp_entries(lds);
689 lds->lds_def_comp_entries = entries;
690 lds->lds_def_comp_size_cnt = count;
695 void lod_free_comp_entries(struct lod_object *lo)
697 if (lo->ldo_mirrors) {
698 OBD_FREE(lo->ldo_mirrors,
699 sizeof(*lo->ldo_mirrors) * lo->ldo_mirror_count);
700 lo->ldo_mirrors = NULL;
701 lo->ldo_mirror_count = 0;
703 lod_free_comp_buffer(lo->ldo_comp_entries,
705 sizeof(*lo->ldo_comp_entries) * lo->ldo_comp_cnt);
706 lo->ldo_comp_entries = NULL;
707 lo->ldo_comp_cnt = 0;
708 lo->ldo_is_composite = 0;
711 int lod_alloc_comp_entries(struct lod_object *lo,
712 int mirror_count, int comp_count)
714 LASSERT(comp_count != 0);
715 LASSERT(lo->ldo_comp_cnt == 0 && lo->ldo_comp_entries == NULL);
717 if (mirror_count > 0) {
718 OBD_ALLOC(lo->ldo_mirrors,
719 sizeof(*lo->ldo_mirrors) * mirror_count);
720 if (!lo->ldo_mirrors)
723 lo->ldo_mirror_count = mirror_count;
726 OBD_ALLOC_LARGE(lo->ldo_comp_entries,
727 sizeof(*lo->ldo_comp_entries) * comp_count);
728 if (lo->ldo_comp_entries == NULL) {
729 OBD_FREE(lo->ldo_mirrors,
730 sizeof(*lo->ldo_mirrors) * mirror_count);
731 lo->ldo_mirror_count = 0;
735 lo->ldo_comp_cnt = comp_count;
739 int lod_fill_mirrors(struct lod_object *lo)
741 struct lod_layout_component *lod_comp;
743 __u16 mirror_id = 0xffff;
747 LASSERT(equi(!lo->ldo_is_composite, lo->ldo_mirror_count == 0));
749 if (!lo->ldo_is_composite)
752 lod_comp = &lo->ldo_comp_entries[0];
753 for (i = 0; i < lo->ldo_comp_cnt; i++, lod_comp++) {
754 int stale = !!(lod_comp->llc_flags & LCME_FL_STALE);
755 int preferred = !!(lod_comp->llc_flags & LCME_FL_PREF_WR);
757 if (mirror_id_of(lod_comp->llc_id) == mirror_id) {
758 lo->ldo_mirrors[mirror_idx].lme_stale |= stale;
759 lo->ldo_mirrors[mirror_idx].lme_primary |= preferred;
760 lo->ldo_mirrors[mirror_idx].lme_end = i;
766 if (mirror_idx >= lo->ldo_mirror_count)
769 mirror_id = mirror_id_of(lod_comp->llc_id);
771 lo->ldo_mirrors[mirror_idx].lme_id = mirror_id;
772 lo->ldo_mirrors[mirror_idx].lme_stale = stale;
773 lo->ldo_mirrors[mirror_idx].lme_primary = preferred;
774 lo->ldo_mirrors[mirror_idx].lme_start = i;
775 lo->ldo_mirrors[mirror_idx].lme_end = i;
777 if (mirror_idx != lo->ldo_mirror_count - 1)
784 * Generate on-disk lov_mds_md structure for each layout component based on
785 * the information in lod_object->ldo_comp_entries[i].
787 * \param[in] env execution environment for this thread
788 * \param[in] lo LOD object
789 * \param[in] comp_idx index of ldo_comp_entries
790 * \param[in] lmm buffer to cotain the on-disk lov_mds_md
791 * \param[in|out] lmm_size buffer size/lmm size
792 * \param[in] is_dir generate lov ea for dir or file? For dir case,
793 * the stripe info is from the default stripe
794 * template, which is collected in lod_ah_init(),
795 * either from parent object or root object; for
796 * file case, it's from the @lo object
798 * \retval 0 if on disk structure is created successfully
799 * \retval negative error number on failure
801 static int lod_gen_component_ea(const struct lu_env *env,
802 struct lod_object *lo, int comp_idx,
803 struct lov_mds_md *lmm, int *lmm_size,
806 struct lod_thread_info *info = lod_env_info(env);
807 const struct lu_fid *fid = lu_object_fid(&lo->ldo_obj.do_lu);
808 struct lod_device *lod;
809 struct lov_ost_data_v1 *objs;
810 struct lod_layout_component *lod_comp;
819 &lo->ldo_def_striping->lds_def_comp_entries[comp_idx];
821 lod_comp = &lo->ldo_comp_entries[comp_idx];
823 magic = lod_comp->llc_pool != NULL ? LOV_MAGIC_V3 : LOV_MAGIC_V1;
824 if (lod_comp->llc_pattern == 0) /* default striping */
825 lod_comp->llc_pattern = LOV_PATTERN_RAID0;
827 lmm->lmm_magic = cpu_to_le32(magic);
828 lmm->lmm_pattern = cpu_to_le32(lod_comp->llc_pattern);
829 fid_to_lmm_oi(fid, &lmm->lmm_oi);
830 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_LMMOI))
831 lmm->lmm_oi.oi.oi_id++;
832 lmm_oi_cpu_to_le(&lmm->lmm_oi, &lmm->lmm_oi);
834 lmm->lmm_stripe_size = cpu_to_le32(lod_comp->llc_stripe_size);
835 lmm->lmm_stripe_count = cpu_to_le16(lod_comp->llc_stripe_count);
837 * for dir and uninstantiated component, lmm_layout_gen stores
838 * default stripe offset.
840 lmm->lmm_layout_gen =
841 (is_dir || !lod_comp_inited(lod_comp)) ?
842 cpu_to_le16(lod_comp->llc_stripe_offset) :
843 cpu_to_le16(lod_comp->llc_layout_gen);
845 if (magic == LOV_MAGIC_V1) {
846 objs = &lmm->lmm_objects[0];
848 struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *)lmm;
849 size_t cplen = strlcpy(v3->lmm_pool_name,
851 sizeof(v3->lmm_pool_name));
852 if (cplen >= sizeof(v3->lmm_pool_name))
854 objs = &v3->lmm_objects[0];
856 stripe_count = lod_comp_entry_stripe_count(lo, lod_comp, is_dir);
857 if (!is_dir && lo->ldo_is_composite)
858 lod_comp_shrink_stripe_count(lod_comp, &stripe_count);
860 if (is_dir || lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED)
863 /* generate ost_idx of this component stripe */
864 lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
865 for (i = 0; i < stripe_count; i++) {
866 struct dt_object *object;
867 __u32 ost_idx = (__u32)-1UL;
868 int type = LU_SEQ_RANGE_OST;
870 if (lod_comp->llc_stripe && lod_comp->llc_stripe[i]) {
871 object = lod_comp->llc_stripe[i];
872 /* instantiated component */
873 info->lti_fid = *lu_object_fid(&object->do_lu);
875 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_MULTIPLE_REF) &&
877 if (cfs_fail_val == 0)
878 cfs_fail_val = info->lti_fid.f_oid;
880 info->lti_fid.f_oid = cfs_fail_val;
883 rc = fid_to_ostid(&info->lti_fid, &info->lti_ostid);
886 ostid_cpu_to_le(&info->lti_ostid, &objs[i].l_ost_oi);
887 objs[i].l_ost_gen = cpu_to_le32(0);
888 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FLD_LOOKUP))
891 rc = lod_fld_lookup(env, lod, &info->lti_fid,
894 CERROR("%s: Can not locate "DFID": rc = %d\n",
895 lod2obd(lod)->obd_name,
896 PFID(&info->lti_fid), rc);
899 } else if (lod_comp->llc_ostlist.op_array &&
900 lod_comp->llc_ostlist.op_count) {
901 /* user specified ost list */
902 ost_idx = lod_comp->llc_ostlist.op_array[i];
905 * with un-instantiated or with no specified ost list
906 * component, its l_ost_idx does not matter.
908 objs[i].l_ost_idx = cpu_to_le32(ost_idx);
911 if (lmm_size != NULL)
912 *lmm_size = lov_mds_md_size(stripe_count, magic);
917 * Generate on-disk lov_mds_md structure based on the information in
918 * the lod_object->ldo_comp_entries.
920 * \param[in] env execution environment for this thread
921 * \param[in] lo LOD object
922 * \param[in] lmm buffer to cotain the on-disk lov_mds_md
923 * \param[in|out] lmm_size buffer size/lmm size
924 * \param[in] is_dir generate lov ea for dir or file? For dir case,
925 * the stripe info is from the default stripe
926 * template, which is collected in lod_ah_init(),
927 * either from parent object or root object; for
928 * file case, it's from the @lo object
930 * \retval 0 if on disk structure is created successfully
931 * \retval negative error number on failure
933 int lod_generate_lovea(const struct lu_env *env, struct lod_object *lo,
934 struct lov_mds_md *lmm, int *lmm_size, bool is_dir)
936 struct lov_comp_md_entry_v1 *lcme;
937 struct lov_comp_md_v1 *lcm;
938 struct lod_layout_component *comp_entries;
939 __u16 comp_cnt, mirror_cnt;
941 int i, rc = 0, offset;
945 comp_cnt = lo->ldo_def_striping->lds_def_comp_cnt;
946 mirror_cnt = lo->ldo_def_striping->lds_def_mirror_cnt;
947 comp_entries = lo->ldo_def_striping->lds_def_comp_entries;
949 lo->ldo_def_striping->lds_def_striping_is_composite;
951 comp_cnt = lo->ldo_comp_cnt;
952 mirror_cnt = lo->ldo_mirror_count;
953 comp_entries = lo->ldo_comp_entries;
954 is_composite = lo->ldo_is_composite;
957 LASSERT(lmm_size != NULL);
958 LASSERT(comp_cnt != 0 && comp_entries != NULL);
961 rc = lod_gen_component_ea(env, lo, 0, lmm, lmm_size, is_dir);
965 lcm = (struct lov_comp_md_v1 *)lmm;
966 memset(lcm, 0, sizeof(*lcm));
968 lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
969 lcm->lcm_entry_count = cpu_to_le16(comp_cnt);
970 lcm->lcm_mirror_count = cpu_to_le16(mirror_cnt - 1);
971 lcm->lcm_flags = cpu_to_le16(lo->ldo_flr_state);
973 offset = sizeof(*lcm) + sizeof(*lcme) * comp_cnt;
974 LASSERT(offset % sizeof(__u64) == 0);
976 for (i = 0; i < comp_cnt; i++) {
977 struct lod_layout_component *lod_comp;
978 struct lov_mds_md *sub_md;
981 lod_comp = &comp_entries[i];
982 lcme = &lcm->lcm_entries[i];
984 LASSERT(ergo(!is_dir, lod_comp->llc_id != LCME_ID_INVAL));
985 lcme->lcme_id = cpu_to_le32(lod_comp->llc_id);
987 /* component could be un-inistantiated */
988 lcme->lcme_flags = cpu_to_le32(lod_comp->llc_flags);
989 if (lod_comp->llc_flags & LCME_FL_NOSYNC)
990 lcme->lcme_timestamp =
991 cpu_to_le64(lod_comp->llc_timestamp);
992 lcme->lcme_extent.e_start =
993 cpu_to_le64(lod_comp->llc_extent.e_start);
994 lcme->lcme_extent.e_end =
995 cpu_to_le64(lod_comp->llc_extent.e_end);
996 lcme->lcme_offset = cpu_to_le32(offset);
998 sub_md = (struct lov_mds_md *)((char *)lcm + offset);
999 rc = lod_gen_component_ea(env, lo, i, sub_md, &size, is_dir);
1002 lcme->lcme_size = cpu_to_le32(size);
1004 LASSERTF((offset <= *lmm_size) && (offset % sizeof(__u64) == 0),
1005 "offset:%d lmm_size:%d\n", offset, *lmm_size);
1007 lcm->lcm_size = cpu_to_le32(offset);
1008 lcm->lcm_layout_gen = cpu_to_le32(is_dir ? 0 : lo->ldo_layout_gen);
1010 lustre_print_user_md(D_LAYOUT, (struct lov_user_md *)lmm,
1021 * Fill lti_ea_store buffer in the environment with a value for the given
1022 * EA. The buffer is reallocated if the value doesn't fit.
1024 * \param[in,out] env execution environment for this thread
1025 * .lti_ea_store buffer is filled with EA's value
1026 * \param[in] lo LOD object
1027 * \param[in] name name of the EA
1029 * \retval > 0 if EA is fetched successfully
1030 * \retval 0 if EA is empty
1031 * \retval negative error number on failure
1033 int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
1036 struct lod_thread_info *info = lod_env_info(env);
1037 struct dt_object *next = dt_object_child(&lo->ldo_obj);
1043 if (unlikely(info->lti_ea_store == NULL)) {
1044 /* just to enter in allocation block below */
1048 info->lti_buf.lb_buf = info->lti_ea_store;
1049 info->lti_buf.lb_len = info->lti_ea_store_size;
1050 rc = dt_xattr_get(env, next, &info->lti_buf, name);
1053 /* if object is not striped or inaccessible */
1054 if (rc == -ENODATA || rc == -ENOENT)
1057 if (rc == -ERANGE) {
1058 /* EA doesn't fit, reallocate new buffer */
1059 rc = dt_xattr_get(env, next, &LU_BUF_NULL, name);
1060 if (rc == -ENODATA || rc == -ENOENT)
1066 rc = lod_ea_store_resize(info, rc);
1076 * Verify the target index is present in the current configuration.
1078 * \param[in] md LOD device where the target table is stored
1079 * \param[in] idx target's index
1081 * \retval 0 if the index is present
1082 * \retval -EINVAL if not
1084 static int validate_lod_and_idx(struct lod_device *md, __u32 idx)
1086 if (unlikely(idx >= md->lod_ost_descs.ltd_tgts_size ||
1087 !cfs_bitmap_check(md->lod_ost_bitmap, idx))) {
1088 CERROR("%s: bad idx: %d of %d\n", lod2obd(md)->obd_name, idx,
1089 md->lod_ost_descs.ltd_tgts_size);
1093 if (unlikely(OST_TGT(md, idx) == NULL)) {
1094 CERROR("%s: bad lod_tgt_desc for idx: %d\n",
1095 lod2obd(md)->obd_name, idx);
1099 if (unlikely(OST_TGT(md, idx)->ltd_ost == NULL)) {
1100 CERROR("%s: invalid lod device, for idx: %d\n",
1101 lod2obd(md)->obd_name , idx);
1109 * Instantiate objects for stripes.
1111 * Allocate and initialize LU-objects representing the stripes. The number
1112 * of the stripes (ldo_stripe_count) must be initialized already. The caller
1113 * must ensure nobody else is calling the function on the object at the same
1114 * time. FLDB service must be running to be able to map a FID to the targets
1115 * and find appropriate device representing that target.
1117 * \param[in] env execution environment for this thread
1118 * \param[in,out] lo LOD object
1119 * \param[in] objs an array of IDs to creates the objects from
1120 * \param[in] comp_idx index of ldo_comp_entries
1122 * \retval 0 if the objects are instantiated successfully
1123 * \retval negative error number on failure
1125 int lod_initialize_objects(const struct lu_env *env, struct lod_object *lo,
1126 struct lov_ost_data_v1 *objs, int comp_idx)
1128 struct lod_layout_component *lod_comp;
1129 struct lod_thread_info *info = lod_env_info(env);
1130 struct lod_device *md;
1131 struct lu_object *o, *n;
1132 struct lu_device *nd;
1133 struct dt_object **stripe = NULL;
1134 __u32 *ost_indices = NULL;
1140 LASSERT(lo != NULL);
1141 md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
1143 LASSERT(lo->ldo_comp_cnt != 0 && lo->ldo_comp_entries != NULL);
1144 lod_comp = &lo->ldo_comp_entries[comp_idx];
1146 LASSERT(lod_comp->llc_stripe == NULL);
1147 LASSERT(lod_comp->llc_stripe_count > 0);
1148 LASSERT(lod_comp->llc_stripe_size > 0);
1150 stripe_len = lod_comp->llc_stripe_count;
1151 OBD_ALLOC(stripe, sizeof(stripe[0]) * stripe_len);
1154 OBD_ALLOC(ost_indices, sizeof(*ost_indices) * stripe_len);
1156 GOTO(out, rc = -ENOMEM);
1158 for (i = 0; i < lod_comp->llc_stripe_count; i++) {
1159 if (unlikely(lovea_slot_is_dummy(&objs[i])))
1162 ostid_le_to_cpu(&objs[i].l_ost_oi, &info->lti_ostid);
1163 idx = le32_to_cpu(objs[i].l_ost_idx);
1164 rc = ostid_to_fid(&info->lti_fid, &info->lti_ostid, idx);
1167 LASSERTF(fid_is_sane(&info->lti_fid), ""DFID" insane!\n",
1168 PFID(&info->lti_fid));
1169 lod_getref(&md->lod_ost_descs);
1171 rc = validate_lod_and_idx(md, idx);
1172 if (unlikely(rc != 0)) {
1173 lod_putref(md, &md->lod_ost_descs);
1177 nd = &OST_TGT(md,idx)->ltd_ost->dd_lu_dev;
1178 lod_putref(md, &md->lod_ost_descs);
1180 /* In the function below, .hs_keycmp resolves to
1181 * u_obj_hop_keycmp() */
1182 /* coverity[overrun-buffer-val] */
1183 o = lu_object_find_at(env, nd, &info->lti_fid, NULL);
1185 GOTO(out, rc = PTR_ERR(o));
1187 n = lu_object_locate(o->lo_header, nd->ld_type);
1190 stripe[i] = container_of(n, struct dt_object, do_lu);
1191 ost_indices[i] = idx;
1196 for (i = 0; i < stripe_len; i++)
1197 if (stripe[i] != NULL)
1198 dt_object_put(env, stripe[i]);
1200 OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
1201 lod_comp->llc_stripe_count = 0;
1203 OBD_FREE(ost_indices,
1204 sizeof(*ost_indices) * stripe_len);
1206 lod_comp->llc_stripe = stripe;
1207 lod_comp->llc_ost_indices = ost_indices;
1208 lod_comp->llc_stripes_allocated = stripe_len;
1215 * Instantiate objects for striping.
1217 * Parse striping information in \a buf and instantiate the objects
1218 * representing the stripes.
1220 * \param[in] env execution environment for this thread
1221 * \param[in] lo LOD object
1222 * \param[in] buf buffer storing LOV EA to parse
1224 * \retval 0 if parsing and objects creation succeed
1225 * \retval negative error number on failure
1227 int lod_parse_striping(const struct lu_env *env, struct lod_object *lo,
1228 const struct lu_buf *buf)
1230 struct lov_mds_md_v1 *lmm;
1231 struct lov_comp_md_v1 *comp_v1 = NULL;
1232 struct lov_ost_data_v1 *objs;
1233 __u32 magic, pattern;
1236 __u16 mirror_cnt = 0;
1240 LASSERT(buf->lb_buf);
1241 LASSERT(buf->lb_len);
1242 LASSERT(mutex_is_locked(&lo->ldo_layout_mutex));
1244 lmm = (struct lov_mds_md_v1 *)buf->lb_buf;
1245 magic = le32_to_cpu(lmm->lmm_magic);
1247 if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3 &&
1248 magic != LOV_MAGIC_COMP_V1)
1249 GOTO(out, rc = -EINVAL);
1251 lod_free_comp_entries(lo);
1253 if (magic == LOV_MAGIC_COMP_V1) {
1254 comp_v1 = (struct lov_comp_md_v1 *)lmm;
1255 comp_cnt = le16_to_cpu(comp_v1->lcm_entry_count);
1257 GOTO(out, rc = -EINVAL);
1258 lo->ldo_layout_gen = le32_to_cpu(comp_v1->lcm_layout_gen);
1259 lo->ldo_is_composite = 1;
1260 lo->ldo_flr_state = le16_to_cpu(comp_v1->lcm_flags) &
1262 mirror_cnt = le16_to_cpu(comp_v1->lcm_mirror_count) + 1;
1265 lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
1266 lo->ldo_is_composite = 0;
1269 rc = lod_alloc_comp_entries(lo, mirror_cnt, comp_cnt);
1273 for (i = 0; i < comp_cnt; i++) {
1274 struct lod_layout_component *lod_comp;
1275 struct lu_extent *ext;
1278 lod_comp = &lo->ldo_comp_entries[i];
1279 if (lo->ldo_is_composite) {
1280 offs = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
1281 lmm = (struct lov_mds_md_v1 *)((char *)comp_v1 + offs);
1282 magic = le32_to_cpu(lmm->lmm_magic);
1284 ext = &comp_v1->lcm_entries[i].lcme_extent;
1285 lod_comp->llc_extent.e_start =
1286 le64_to_cpu(ext->e_start);
1287 lod_comp->llc_extent.e_end = le64_to_cpu(ext->e_end);
1288 lod_comp->llc_flags =
1289 le32_to_cpu(comp_v1->lcm_entries[i].lcme_flags);
1290 if (lod_comp->llc_flags & LCME_FL_NOSYNC)
1291 lod_comp->llc_timestamp = le64_to_cpu(
1292 comp_v1->lcm_entries[i].lcme_timestamp);
1294 le32_to_cpu(comp_v1->lcm_entries[i].lcme_id);
1295 if (lod_comp->llc_id == LCME_ID_INVAL)
1296 GOTO(out, rc = -EINVAL);
1298 lod_comp_set_init(lod_comp);
1301 pattern = le32_to_cpu(lmm->lmm_pattern);
1302 if (lov_pattern(pattern) != LOV_PATTERN_RAID0 &&
1303 lov_pattern(pattern) != LOV_PATTERN_MDT)
1304 GOTO(out, rc = -EINVAL);
1306 lod_comp->llc_pattern = pattern;
1307 lod_comp->llc_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
1308 lod_comp->llc_stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
1309 lod_comp->llc_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
1311 if (magic == LOV_MAGIC_V3) {
1312 struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *)lmm;
1313 lod_set_pool(&lod_comp->llc_pool, v3->lmm_pool_name);
1314 objs = &v3->lmm_objects[0];
1316 lod_set_pool(&lod_comp->llc_pool, NULL);
1317 objs = &lmm->lmm_objects[0];
1321 * If uninstantiated template component has valid l_ost_idx,
1322 * then user has specified ost list for this component.
1324 if (!lod_comp_inited(lod_comp)) {
1327 if (objs[0].l_ost_idx != (__u32)-1UL) {
1328 stripe_count = lod_comp_entry_stripe_count(
1329 lo, lod_comp, false);
1331 * load the user specified ost list, when this
1332 * component is instantiated later, it will be
1333 * used in lod_alloc_ost_list().
1335 lod_comp->llc_ostlist.op_count = stripe_count;
1336 lod_comp->llc_ostlist.op_size =
1337 stripe_count * sizeof(__u32);
1338 OBD_ALLOC(lod_comp->llc_ostlist.op_array,
1339 lod_comp->llc_ostlist.op_size);
1340 if (!lod_comp->llc_ostlist.op_array)
1341 GOTO(out, rc = -ENOMEM);
1343 for (j = 0; j < stripe_count; j++)
1344 lod_comp->llc_ostlist.op_array[j] =
1345 le32_to_cpu(objs[j].l_ost_idx);
1348 * this component OST objects starts from the
1349 * first ost_idx, lod_alloc_ost_list() will
1352 lod_comp->llc_stripe_offset = objs[0].l_ost_idx;
1355 * for uninstantiated component,
1356 * lmm_layout_gen stores default stripe offset.
1358 lod_comp->llc_stripe_offset =
1359 lmm->lmm_layout_gen;
1363 /* skip un-instantiated component object initialization */
1364 if (!lod_comp_inited(lod_comp))
1367 if (!(lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED) &&
1368 !(lod_comp->llc_pattern & LOV_PATTERN_MDT)) {
1369 rc = lod_initialize_objects(env, lo, objs, i);
1375 rc = lod_fill_mirrors(lo);
1381 lod_striping_free_nolock(env, lo);
1386 * Check whether the striping (LOVEA for regular file, LMVEA for directory)
1387 * is already cached.
1389 * \param[in] lo LOD object
1391 * \retval True if the striping is cached, otherwise
1394 static bool lod_striping_loaded(struct lod_object *lo)
1396 if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr) &&
1397 lo->ldo_comp_cached)
1400 if (S_ISDIR(lod2lu_obj(lo)->lo_header->loh_attr)) {
1401 if (lo->ldo_dir_stripe_loaded)
1404 /* Never load LMV stripe for slaves of striped dir */
1405 if (lo->ldo_dir_slave_stripe)
1413 * A generic function to initialize the stripe objects.
1415 * A protected version of lod_striping_load_locked() - load the striping
1416 * information from storage, parse that and instantiate LU objects to
1417 * represent the stripes. The LOD object \a lo supplies a pointer to the
1418 * next sub-object in the LU stack so we can lock it. Also use \a lo to
1419 * return an array of references to the newly instantiated objects.
1421 * \param[in] env execution environment for this thread
1422 * \param[in,out] lo LOD object, where striping is stored and
1423 * which gets an array of references
1425 * \retval 0 if parsing and object creation succeed
1426 * \retval negative error number on failure
1428 int lod_striping_load(const struct lu_env *env, struct lod_object *lo)
1430 struct lod_thread_info *info = lod_env_info(env);
1431 struct dt_object *next = dt_object_child(&lo->ldo_obj);
1432 struct lu_buf *buf = &info->lti_buf;
1437 if (!dt_object_exists(next))
1440 if (lod_striping_loaded(lo))
1443 mutex_lock(&lo->ldo_layout_mutex);
1444 if (lod_striping_loaded(lo))
1445 GOTO(unlock, rc = 0);
1447 if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr)) {
1448 rc = lod_get_lov_ea(env, lo);
1453 * there is LOV EA (striping information) in this object
1454 * let's parse it and create in-core objects for the stripes
1456 buf->lb_buf = info->lti_ea_store;
1457 buf->lb_len = info->lti_ea_store_size;
1458 rc = lod_parse_striping(env, lo, buf);
1460 lo->ldo_comp_cached = 1;
1461 } else if (S_ISDIR(lod2lu_obj(lo)->lo_header->loh_attr)) {
1462 rc = lod_get_lmv_ea(env, lo);
1463 if (rc < (typeof(rc))sizeof(struct lmv_mds_md_v1)) {
1464 /* Let's set stripe_loaded to avoid further
1465 * stripe loading especially for non-stripe directory,
1466 * which can hurt performance. (See LU-9840)
1469 lo->ldo_dir_stripe_loaded = 1;
1470 GOTO(unlock, rc = rc > 0 ? -EINVAL : rc);
1472 buf->lb_buf = info->lti_ea_store;
1473 buf->lb_len = info->lti_ea_store_size;
1474 if (rc == sizeof(struct lmv_mds_md_v1)) {
1475 rc = lod_load_lmv_shards(env, lo, buf, true);
1476 if (buf->lb_buf != info->lti_ea_store) {
1477 OBD_FREE_LARGE(info->lti_ea_store,
1478 info->lti_ea_store_size);
1479 info->lti_ea_store = buf->lb_buf;
1480 info->lti_ea_store_size = buf->lb_len;
1488 * there is LMV EA (striping information) in this object
1489 * let's parse it and create in-core objects for the stripes
1491 rc = lod_parse_dir_striping(env, lo, buf);
1493 lo->ldo_dir_stripe_loaded = 1;
1497 mutex_unlock(&lo->ldo_layout_mutex);
1502 int lod_striping_reload(const struct lu_env *env, struct lod_object *lo,
1503 const struct lu_buf *buf)
1509 mutex_lock(&lo->ldo_layout_mutex);
1510 lod_striping_free_nolock(env, lo);
1511 rc = lod_parse_striping(env, lo, buf);
1512 mutex_unlock(&lo->ldo_layout_mutex);
1518 * Verify lov_user_md_v1/v3 striping.
1520 * Check the validity of all fields including the magic, stripe size,
1521 * stripe count, stripe offset and that the pool is present. Also check
1522 * that each target index points to an existing target. The additional
1523 * \a is_from_disk turns additional checks. In some cases zero fields
1524 * are allowed (like pattern=0).
1526 * \param[in] d LOD device
1527 * \param[in] buf buffer with LOV EA to verify
1528 * \param[in] is_from_disk 0 - from user, allow some fields to be 0
1529 * 1 - from disk, do not allow
1531 * \retval 0 if the striping is valid
1532 * \retval -EINVAL if striping is invalid
1534 static int lod_verify_v1v3(struct lod_device *d, const struct lu_buf *buf,
1537 struct lov_user_md_v1 *lum;
1538 struct lov_user_md_v3 *lum3;
1539 struct pool_desc *pool = NULL;
1543 __u16 stripe_offset;
1550 if (buf->lb_len < sizeof(*lum)) {
1551 CDEBUG(D_LAYOUT, "buf len %zu too small for lov_user_md\n",
1553 GOTO(out, rc = -EINVAL);
1556 magic = le32_to_cpu(lum->lmm_magic) & ~LOV_MAGIC_DEFINED;
1557 if (magic != LOV_USER_MAGIC_V1 &&
1558 magic != LOV_USER_MAGIC_V3 &&
1559 magic != LOV_USER_MAGIC_SPECIFIC) {
1560 CDEBUG(D_LAYOUT, "bad userland LOV MAGIC: %#x\n",
1561 le32_to_cpu(lum->lmm_magic));
1562 GOTO(out, rc = -EINVAL);
1565 /* the user uses "0" for default stripe pattern normally. */
1566 if (!is_from_disk && lum->lmm_pattern == LOV_PATTERN_NONE)
1567 lum->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
1569 if (!lov_pattern_supported(le32_to_cpu(lum->lmm_pattern))) {
1570 CDEBUG(D_LAYOUT, "bad userland stripe pattern: %#x\n",
1571 le32_to_cpu(lum->lmm_pattern));
1572 GOTO(out, rc = -EINVAL);
1575 /* a released lum comes from creating orphan on hsm release,
1576 * doesn't make sense to verify it. */
1577 if (le32_to_cpu(lum->lmm_pattern) & LOV_PATTERN_F_RELEASED)
1580 /* 64kB is the largest common page size we see (ia64), and matches the
1582 stripe_size = le32_to_cpu(lum->lmm_stripe_size);
1583 if (stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
1584 CDEBUG(D_LAYOUT, "stripe size %u not a multiple of %u\n",
1585 stripe_size, LOV_MIN_STRIPE_SIZE);
1586 GOTO(out, rc = -EINVAL);
1589 stripe_offset = le16_to_cpu(lum->lmm_stripe_offset);
1590 if (!is_from_disk && stripe_offset != LOV_OFFSET_DEFAULT &&
1591 lov_pattern(le32_to_cpu(lum->lmm_pattern)) != LOV_PATTERN_MDT) {
1592 /* if offset is not within valid range [0, osts_size) */
1593 if (stripe_offset >= d->lod_osts_size) {
1594 CDEBUG(D_LAYOUT, "stripe offset %u >= bitmap size %u\n",
1595 stripe_offset, d->lod_osts_size);
1596 GOTO(out, rc = -EINVAL);
1599 /* if lmm_stripe_offset is *not* in bitmap */
1600 if (!cfs_bitmap_check(d->lod_ost_bitmap, stripe_offset)) {
1601 CDEBUG(D_LAYOUT, "stripe offset %u not in bitmap\n",
1603 GOTO(out, rc = -EINVAL);
1607 if (magic == LOV_USER_MAGIC_V1)
1608 lum_size = offsetof(struct lov_user_md_v1,
1610 else if (magic == LOV_USER_MAGIC_V3 || magic == LOV_USER_MAGIC_SPECIFIC)
1611 lum_size = offsetof(struct lov_user_md_v3,
1614 GOTO(out, rc = -EINVAL);
1616 stripe_count = le16_to_cpu(lum->lmm_stripe_count);
1617 if (buf->lb_len < lum_size) {
1618 CDEBUG(D_LAYOUT, "invalid buf len %zu/%zu for lov_user_md with "
1619 "magic %#x and stripe_count %u\n",
1620 buf->lb_len, lum_size, magic, stripe_count);
1621 GOTO(out, rc = -EINVAL);
1624 if (!(magic == LOV_USER_MAGIC_V3 || magic == LOV_USER_MAGIC_SPECIFIC))
1628 /* In the function below, .hs_keycmp resolves to
1629 * pool_hashkey_keycmp() */
1630 /* coverity[overrun-buffer-val] */
1631 pool = lod_find_pool(d, lum3->lmm_pool_name);
1635 if (!is_from_disk && stripe_offset != LOV_OFFSET_DEFAULT) {
1636 rc = lod_check_index_in_pool(stripe_offset, pool);
1638 GOTO(out, rc = -EINVAL);
1641 if (is_from_disk && stripe_count > pool_tgt_count(pool)) {
1642 CDEBUG(D_LAYOUT, "stripe count %u > # OSTs %u in the pool\n",
1643 stripe_count, pool_tgt_count(pool));
1644 GOTO(out, rc = -EINVAL);
1649 lod_pool_putref(pool);
1655 struct lov_comp_md_entry_v1 *comp_entry_v1(struct lov_comp_md_v1 *comp, int i)
1657 LASSERTF((le32_to_cpu(comp->lcm_magic) & ~LOV_MAGIC_DEFINED) ==
1658 LOV_USER_MAGIC_COMP_V1, "Wrong magic %x\n",
1659 le32_to_cpu(comp->lcm_magic));
1660 LASSERTF(i >= 0 && i < le16_to_cpu(comp->lcm_entry_count),
1661 "bad index %d, max = %d\n",
1662 i, le16_to_cpu(comp->lcm_entry_count));
1664 return &comp->lcm_entries[i];
1667 #define for_each_comp_entry_v1(comp, entry) \
1668 for (entry = comp_entry_v1(comp, 0); \
1669 entry <= comp_entry_v1(comp, \
1670 le16_to_cpu(comp->lcm_entry_count) - 1); \
1673 int lod_erase_dom_stripe(struct lov_comp_md_v1 *comp_v1)
1675 struct lov_comp_md_entry_v1 *ent, *dom_ent;
1677 __u32 dom_off, dom_size, comp_size;
1678 void *blob_src, *blob_dst;
1679 unsigned int blob_size, blob_shift;
1681 entries = le16_to_cpu(comp_v1->lcm_entry_count) - 1;
1682 /* if file has only DoM stripe return just error */
1686 comp_size = le32_to_cpu(comp_v1->lcm_size);
1687 dom_ent = &comp_v1->lcm_entries[0];
1688 dom_off = le32_to_cpu(dom_ent->lcme_offset);
1689 dom_size = le32_to_cpu(dom_ent->lcme_size);
1691 /* shift entries array first */
1692 comp_v1->lcm_entry_count = cpu_to_le16(entries);
1693 memmove(dom_ent, dom_ent + 1,
1694 entries * sizeof(struct lov_comp_md_entry_v1));
1696 /* now move blob of layouts */
1697 blob_dst = (void *)comp_v1 + dom_off - sizeof(*dom_ent);
1698 blob_src = (void *)comp_v1 + dom_off + dom_size;
1699 blob_size = (unsigned long)((void *)comp_v1 + comp_size - blob_src);
1700 blob_shift = sizeof(*dom_ent) + dom_size;
1702 memmove(blob_dst, blob_src, blob_size);
1704 for_each_comp_entry_v1(comp_v1, ent) {
1707 off = le32_to_cpu(ent->lcme_offset);
1708 ent->lcme_offset = cpu_to_le32(off - blob_shift);
1711 comp_v1->lcm_size = cpu_to_le32(comp_size - blob_shift);
1713 /* notify a caller to re-check entry */
1717 int lod_fix_dom_stripe(struct lod_device *d, struct lov_comp_md_v1 *comp_v1)
1719 struct lov_comp_md_entry_v1 *ent, *dom_ent;
1720 struct lu_extent *dom_ext, *ext;
1721 struct lov_user_md_v1 *lum;
1726 dom_ent = &comp_v1->lcm_entries[0];
1727 dom_ext = &dom_ent->lcme_extent;
1728 dom_mid = mirror_id_of(le32_to_cpu(dom_ent->lcme_id));
1729 stripe_size = d->lod_dom_max_stripesize;
1731 lum = (void *)comp_v1 + le32_to_cpu(dom_ent->lcme_offset);
1732 CDEBUG(D_LAYOUT, "DoM component size %u was bigger than MDT limit %u, "
1733 "new size is %u\n", le32_to_cpu(lum->lmm_stripe_size),
1734 d->lod_dom_max_stripesize, stripe_size);
1735 lum->lmm_stripe_size = cpu_to_le32(stripe_size);
1737 for_each_comp_entry_v1(comp_v1, ent) {
1741 mid = mirror_id_of(le32_to_cpu(ent->lcme_id));
1745 ext = &ent->lcme_extent;
1746 if (ext->e_start != dom_ext->e_end)
1749 /* Found next component after the DoM one with the same
1750 * mirror_id and adjust its start with DoM component end.
1752 * NOTE: we are considering here that there can be only one
1753 * DoM component in a file, all replicas are located on OSTs
1754 * always and don't need adjustment since use own layouts.
1756 ext->e_start = cpu_to_le64(stripe_size);
1760 if (stripe_size == 0) {
1761 /* DoM component size is zero due to server setting,
1762 * remove it from the layout */
1763 rc = lod_erase_dom_stripe(comp_v1);
1765 /* Update DoM extent end finally */
1766 dom_ext->e_end = cpu_to_le64(stripe_size);
1773 * Verify LOV striping.
1775 * \param[in] d LOD device
1776 * \param[in] buf buffer with LOV EA to verify
1777 * \param[in] is_from_disk 0 - from user, allow some fields to be 0
1778 * 1 - from disk, do not allow
1779 * \param[in] start extent start for composite layout
1781 * \retval 0 if the striping is valid
1782 * \retval -EINVAL if striping is invalid
1784 int lod_verify_striping(struct lod_device *d, struct lod_object *lo,
1785 const struct lu_buf *buf, bool is_from_disk)
1787 struct lov_desc *desc = &d->lod_desc;
1788 struct lov_user_md_v1 *lum;
1789 struct lov_comp_md_v1 *comp_v1;
1790 struct lov_comp_md_entry_v1 *ent;
1791 struct lu_extent *ext;
1794 __u32 stripe_size = 0;
1795 __u16 prev_mid = -1, mirror_id = -1;
1803 if (buf->lb_len < sizeof(*lum)) {
1804 CDEBUG(D_LAYOUT, "buf len %zu too small for lov_user_md\n",
1809 magic = le32_to_cpu(lum->lmm_magic) & ~LOV_MAGIC_DEFINED;
1810 if (magic != LOV_USER_MAGIC_V1 &&
1811 magic != LOV_USER_MAGIC_V3 &&
1812 magic != LOV_USER_MAGIC_SPECIFIC &&
1813 magic != LOV_USER_MAGIC_COMP_V1) {
1814 CDEBUG(D_LAYOUT, "bad userland LOV MAGIC: %#x\n",
1815 le32_to_cpu(lum->lmm_magic));
1819 if (magic != LOV_USER_MAGIC_COMP_V1)
1820 RETURN(lod_verify_v1v3(d, buf, is_from_disk));
1822 /* magic == LOV_USER_MAGIC_COMP_V1 */
1823 comp_v1 = buf->lb_buf;
1824 if (buf->lb_len < le32_to_cpu(comp_v1->lcm_size)) {
1825 CDEBUG(D_LAYOUT, "buf len %zu is less than %u\n",
1826 buf->lb_len, le32_to_cpu(comp_v1->lcm_size));
1832 if (le16_to_cpu(comp_v1->lcm_entry_count) == 0) {
1833 CDEBUG(D_LAYOUT, "entry count is zero\n");
1837 if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr) &&
1838 lo->ldo_comp_cnt > 0) {
1839 /* could be called from lustre.lov.add */
1840 __u32 cnt = lo->ldo_comp_cnt;
1842 ext = &lo->ldo_comp_entries[cnt - 1].llc_extent;
1843 prev_end = ext->e_end;
1848 for_each_comp_entry_v1(comp_v1, ent) {
1849 ext = &ent->lcme_extent;
1851 if (le64_to_cpu(ext->e_start) >= le64_to_cpu(ext->e_end)) {
1852 CDEBUG(D_LAYOUT, "invalid extent "DEXT"\n",
1853 le64_to_cpu(ext->e_start),
1854 le64_to_cpu(ext->e_end));
1859 /* lcme_id contains valid value */
1860 if (le32_to_cpu(ent->lcme_id) == 0 ||
1861 le32_to_cpu(ent->lcme_id) > LCME_ID_MAX) {
1862 CDEBUG(D_LAYOUT, "invalid id %u\n",
1863 le32_to_cpu(ent->lcme_id));
1867 if (le16_to_cpu(comp_v1->lcm_mirror_count) > 0) {
1868 mirror_id = mirror_id_of(
1869 le32_to_cpu(ent->lcme_id));
1871 /* first component must start with 0 */
1872 if (mirror_id != prev_mid &&
1873 le64_to_cpu(ext->e_start) != 0) {
1875 "invalid start:%llu, expect:0\n",
1876 le64_to_cpu(ext->e_start));
1880 prev_mid = mirror_id;
1884 if (le64_to_cpu(ext->e_start) == 0) {
1889 /* the next must be adjacent with the previous one */
1890 if (le64_to_cpu(ext->e_start) != prev_end) {
1892 "invalid start actual:%llu, expect:%llu\n",
1893 le64_to_cpu(ext->e_start), prev_end);
1897 tmp.lb_buf = (char *)comp_v1 + le32_to_cpu(ent->lcme_offset);
1898 tmp.lb_len = le32_to_cpu(ent->lcme_size);
1900 /* Check DoM entry is always the first one */
1902 if (lov_pattern(le32_to_cpu(lum->lmm_pattern)) ==
1904 /* DoM component can be only the first stripe */
1905 if (le64_to_cpu(ext->e_start) > 0) {
1906 CDEBUG(D_LAYOUT, "invalid DoM component "
1907 "with %llu extent start\n",
1908 le64_to_cpu(ext->e_start));
1911 stripe_size = le32_to_cpu(lum->lmm_stripe_size);
1912 /* There is just one stripe on MDT and it must
1913 * cover whole component size. */
1914 if (stripe_size != le64_to_cpu(ext->e_end)) {
1915 CDEBUG(D_LAYOUT, "invalid DoM layout "
1916 "stripe size %u != %llu "
1917 "(component size)\n",
1918 stripe_size, prev_end);
1921 /* Check stripe size againts per-MDT limit */
1922 if (stripe_size > d->lod_dom_max_stripesize) {
1923 CDEBUG(D_LAYOUT, "DoM component size "
1924 "%u is bigger than MDT limit %u, check "
1925 "dom_max_stripesize parameter\n",
1926 stripe_size, d->lod_dom_max_stripesize);
1927 rc = lod_fix_dom_stripe(d, comp_v1);
1928 if (rc == -ERESTART) {
1929 /* DoM entry was removed, re-check
1930 * new layout from start */
1938 prev_end = le64_to_cpu(ext->e_end);
1940 rc = lod_verify_v1v3(d, &tmp, is_from_disk);
1944 if (prev_end == LUSTRE_EOF)
1947 /* extent end must be aligned with the stripe_size */
1948 stripe_size = le32_to_cpu(lum->lmm_stripe_size);
1949 if (stripe_size == 0)
1950 stripe_size = desc->ld_default_stripe_size;
1951 if (stripe_size == 0 || (prev_end & (stripe_size - 1))) {
1952 CDEBUG(D_LAYOUT, "stripe size isn't aligned, "
1953 "stripe_sz: %u, [%llu, %llu)\n",
1954 stripe_size, ext->e_start, prev_end);
1959 /* make sure that the mirror_count is telling the truth */
1960 if (mirror_count != le16_to_cpu(comp_v1->lcm_mirror_count) + 1)
1967 * set the default stripe size, if unset.
1969 * \param[in,out] val number of bytes per OST stripe
1971 * The minimum stripe size is 64KB to ensure that a single stripe is an
1972 * even multiple of a client PAGE_SIZE (IA64, PPC, etc). Otherwise, it
1973 * is difficult to split dirty pages across OSCs during writes.
1975 void lod_fix_desc_stripe_size(__u64 *val)
1977 if (*val < LOV_MIN_STRIPE_SIZE) {
1979 LCONSOLE_INFO("Increasing default stripe size to "
1980 "minimum value %u\n",
1981 LOV_DESC_STRIPE_SIZE_DEFAULT);
1982 *val = LOV_DESC_STRIPE_SIZE_DEFAULT;
1983 } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
1984 *val &= ~(LOV_MIN_STRIPE_SIZE - 1);
1985 LCONSOLE_WARN("Changing default stripe size to %llu (a "
1986 "multiple of %u)\n",
1987 *val, LOV_MIN_STRIPE_SIZE);
1992 * set the filesystem default number of stripes, if unset.
1994 * \param[in,out] val number of stripes
1996 * A value of "0" means "use the system-wide default stripe count", which
1997 * has either been inherited by now, or falls back to 1 stripe per file.
1998 * A value of "-1" (0xffffffff) means "stripe over all available OSTs",
1999 * and is a valid value, so is left unchanged here.
2001 void lod_fix_desc_stripe_count(__u32 *val)
2008 * set the filesystem default layout pattern
2010 * \param[in,out] val LOV_PATTERN_* layout
2012 * A value of "0" means "use the system-wide default layout type", which
2013 * has either been inherited by now, or falls back to plain RAID0 striping.
2015 void lod_fix_desc_pattern(__u32 *val)
2017 /* from lov_setstripe */
2018 if ((*val != 0) && (*val != LOV_PATTERN_RAID0) &&
2019 (*val != LOV_PATTERN_MDT)) {
2020 LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val);
2025 void lod_fix_desc_qos_maxage(__u32 *val)
2027 /* fix qos_maxage */
2029 *val = LOV_DESC_QOS_MAXAGE_DEFAULT;
2033 * Used to fix insane default striping.
2035 * \param[in] desc striping description
2037 void lod_fix_desc(struct lov_desc *desc)
2039 lod_fix_desc_stripe_size(&desc->ld_default_stripe_size);
2040 lod_fix_desc_stripe_count(&desc->ld_default_stripe_count);
2041 lod_fix_desc_pattern(&desc->ld_pattern);
2042 lod_fix_desc_qos_maxage(&desc->ld_qos_maxage);
2046 * Initialize the structures used to store pools and default striping.
2048 * \param[in] lod LOD device
2049 * \param[in] lcfg configuration structure storing default striping.
2051 * \retval 0 if initialization succeeds
2052 * \retval negative error number on failure
2054 int lod_pools_init(struct lod_device *lod, struct lustre_cfg *lcfg)
2056 struct obd_device *obd;
2057 struct lov_desc *desc;
2061 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
2062 LASSERT(obd != NULL);
2063 obd->obd_lu_dev = &lod->lod_dt_dev.dd_lu_dev;
2065 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
2066 CERROR("LOD setup requires a descriptor\n");
2070 desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1);
2072 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
2073 CERROR("descriptor size wrong: %d > %d\n",
2074 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
2078 if (desc->ld_magic != LOV_DESC_MAGIC) {
2079 if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) {
2080 CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n",
2081 obd->obd_name, desc);
2082 lustre_swab_lov_desc(desc);
2084 CERROR("%s: Bad lov desc magic: %#x\n",
2085 obd->obd_name, desc->ld_magic);
2092 desc->ld_active_tgt_count = 0;
2093 lod->lod_desc = *desc;
2095 lod->lod_sp_me = LUSTRE_SP_CLI;
2097 /* Set up allocation policy (QoS and RR) */
2098 INIT_LIST_HEAD(&lod->lod_qos.lq_oss_list);
2099 init_rwsem(&lod->lod_qos.lq_rw_sem);
2100 lod->lod_qos.lq_dirty = 1;
2101 lod->lod_qos.lq_rr.lqr_dirty = 1;
2102 lod->lod_qos.lq_reset = 1;
2103 /* Default priority is toward free space balance */
2104 lod->lod_qos.lq_prio_free = 232;
2105 /* Default threshold for rr (roughly 17%) */
2106 lod->lod_qos.lq_threshold_rr = 43;
2108 /* Set up OST pool environment */
2109 lod->lod_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
2110 HASH_POOLS_MAX_BITS,
2111 HASH_POOLS_BKT_BITS, 0,
2114 &pool_hash_operations,
2116 if (lod->lod_pools_hash_body == NULL)
2119 INIT_LIST_HEAD(&lod->lod_pool_list);
2120 lod->lod_pool_count = 0;
2121 rc = lod_ost_pool_init(&lod->lod_pool_info, 0);
2124 lod_qos_rr_init(&lod->lod_qos.lq_rr);
2125 rc = lod_ost_pool_init(&lod->lod_qos.lq_rr.lqr_pool, 0);
2127 GOTO(out_pool_info, rc);
2132 lod_ost_pool_free(&lod->lod_pool_info);
2134 cfs_hash_putref(lod->lod_pools_hash_body);
2140 * Release the structures describing the pools.
2142 * \param[in] lod LOD device from which we release the structures
2146 int lod_pools_fini(struct lod_device *lod)
2148 struct obd_device *obd = lod2obd(lod);
2149 struct pool_desc *pool, *tmp;
2152 list_for_each_entry_safe(pool, tmp, &lod->lod_pool_list, pool_list) {
2153 /* free pool structs */
2154 CDEBUG(D_INFO, "delete pool %p\n", pool);
2155 /* In the function below, .hs_keycmp resolves to
2156 * pool_hashkey_keycmp() */
2157 /* coverity[overrun-buffer-val] */
2158 lod_pool_del(obd, pool->pool_name);
2161 cfs_hash_putref(lod->lod_pools_hash_body);
2162 lod_ost_pool_free(&(lod->lod_qos.lq_rr.lqr_pool));
2163 lod_ost_pool_free(&lod->lod_pool_info);