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;
81 CDEBUG(D_CONFIG, "destroying %d ltd desc\n",
84 INIT_LIST_HEAD(&kill);
86 ltd_foreach_tgt_safe(ltd, tgt_desc, tmp) {
88 if (!tgt_desc->ltd_reap)
91 list_add(&tgt_desc->ltd_kill, &kill);
92 lod_tgt_pool_remove(<d->ltd_tgt_pool,
94 ltd_del_tgt(ltd, tgt_desc);
97 mutex_unlock(<d->ltd_mutex);
98 up_read(<d->ltd_rw_sem);
100 list_for_each_entry_safe(tgt_desc, tmp, &kill, ltd_kill) {
103 list_del(&tgt_desc->ltd_kill);
104 rc = obd_disconnect(tgt_desc->ltd_exp);
106 CERROR("%s: failed to disconnect %s: rc = %d\n",
107 lod2obd(lod)->obd_name,
108 obd_uuid2str(&tgt_desc->ltd_uuid), rc);
109 OBD_FREE_PTR(tgt_desc);
112 mutex_unlock(<d->ltd_mutex);
113 up_read(<d->ltd_rw_sem);
118 * Connect LOD to a new OSP and add it to the target table.
120 * Connect to the OSP device passed, initialize all the internal
121 * structures related to the device and add it to the target table.
123 * \param[in] env execution environment for this thread
124 * \param[in] lod LOD device to be connected to the new OSP
125 * \param[in] osp name of OSP device name to be added
126 * \param[in] index index of the new target
127 * \param[in] gen target's generation number
128 * \param[in] tgt_index OSP's group
129 * \param[in] type type of device (mdc or osc)
130 * \param[in] active state of OSP: 0 - inactive, 1 - active
132 * \retval 0 if added successfully
133 * \retval negative error number on failure
135 int lod_add_device(const struct lu_env *env, struct lod_device *lod,
136 char *osp, unsigned index, unsigned gen, int tgt_index,
137 char *type, int active)
139 struct obd_connect_data *data = NULL;
140 struct obd_export *exp = NULL;
141 struct obd_device *obd;
142 struct lu_device *lu_dev;
143 struct dt_device *dt_dev;
145 struct lod_tgt_desc *tgt_desc;
146 struct lod_tgt_descs *ltd;
147 struct lustre_cfg *lcfg;
148 struct obd_uuid obd_uuid;
150 bool connected = false;
153 CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, index, gen);
156 CERROR("request to add OBD %s with invalid generation: %d\n",
161 obd_str2uuid(&obd_uuid, osp);
163 obd = class_find_client_obd(&obd_uuid, LUSTRE_OSP_NAME,
164 &lod->lod_dt_dev.dd_lu_dev.ld_obd->obd_uuid);
166 CERROR("can't find %s device\n", osp);
170 LASSERT(obd->obd_lu_dev != NULL);
171 LASSERT(obd->obd_lu_dev->ld_site == lod->lod_dt_dev.dd_lu_dev.ld_site);
173 lu_dev = obd->obd_lu_dev;
174 dt_dev = lu2dt_dev(lu_dev);
178 GOTO(out_cleanup, rc = -ENOMEM);
180 data->ocd_connect_flags = OBD_CONNECT_INDEX | OBD_CONNECT_VERSION;
181 data->ocd_version = LUSTRE_VERSION_CODE;
182 data->ocd_index = index;
184 if (strcmp(LUSTRE_OSC_NAME, type) == 0) {
186 data->ocd_connect_flags |= OBD_CONNECT_AT |
189 #ifdef HAVE_LRU_RESIZE_SUPPORT
190 OBD_CONNECT_LRU_RESIZE |
193 OBD_CONNECT_REQPORTAL |
194 OBD_CONNECT_SKIP_ORPHAN |
196 OBD_CONNECT_LVB_TYPE |
197 OBD_CONNECT_VERSION |
198 OBD_CONNECT_PINGLESS |
200 OBD_CONNECT_BULK_MBITS;
202 data->ocd_group = tgt_index;
203 ltd = &lod->lod_ost_descs;
205 struct obd_import *imp = obd->u.cli.cl_import;
208 data->ocd_ibits_known = MDS_INODELOCK_UPDATE;
209 data->ocd_connect_flags |= OBD_CONNECT_ACL |
211 OBD_CONNECT_MDS_MDS |
216 OBD_CONNECT_BULK_MBITS;
217 spin_lock(&imp->imp_lock);
218 imp->imp_server_timeout = 1;
219 spin_unlock(&imp->imp_lock);
220 imp->imp_client->cli_request_portal = OUT_PORTAL;
221 CDEBUG(D_OTHER, "%s: Set 'mds' portal and timeout\n",
223 ltd = &lod->lod_mdt_descs;
226 rc = obd_connect(env, &exp, obd, &obd->obd_uuid, data, NULL);
229 CERROR("%s: cannot connect to next dev %s (%d)\n",
230 obd->obd_name, osp, rc);
231 GOTO(out_cleanup, rc);
235 /* Allocate ost descriptor and fill it */
236 OBD_ALLOC_PTR(tgt_desc);
238 GOTO(out_cleanup, rc = -ENOMEM);
240 tgt_desc->ltd_tgt = dt_dev;
241 tgt_desc->ltd_exp = exp;
242 tgt_desc->ltd_uuid = obd->u.cli.cl_target_uuid;
243 tgt_desc->ltd_gen = gen;
244 tgt_desc->ltd_index = index;
245 tgt_desc->ltd_active = active;
247 down_write(<d->ltd_rw_sem);
248 mutex_lock(<d->ltd_mutex);
249 rc = ltd_add_tgt(ltd, tgt_desc);
253 rc = lu_qos_add_tgt(<d->ltd_qos, tgt_desc);
255 GOTO(out_del_tgt, rc);
257 rc = lod_tgt_pool_add(<d->ltd_tgt_pool, index,
258 ltd->ltd_lov_desc.ld_tgt_count);
260 CERROR("%s: can't set up pool, failed with %d\n",
262 GOTO(out_del_tgt, rc);
265 mutex_unlock(<d->ltd_mutex);
266 up_write(<d->ltd_rw_sem);
268 if (lod->lod_recovery_completed)
269 lu_dev->ld_ops->ldo_recovery_complete(env, lu_dev);
271 if (!for_ost && lod->lod_initialized) {
272 rc = lod_sub_init_llog(env, lod, tgt_desc->ltd_tgt);
274 CERROR("%s: cannot start llog on %s:rc = %d\n",
275 lod2obd(lod)->obd_name, osp, rc);
280 rc = lfsck_add_target(env, lod->lod_child, dt_dev, exp, index, for_ost);
282 CERROR("Fail to add LFSCK target: name = %s, type = %s, "
283 "index = %u, rc = %d\n", osp, type, index, rc);
284 GOTO(out_fini_llog, rc);
288 lod_sub_fini_llog(env, tgt_desc->ltd_tgt,
289 tgt_desc->ltd_recovery_thread);
291 down_write(<d->ltd_rw_sem);
292 mutex_lock(<d->ltd_mutex);
293 if (!for_ost && LTD_TGT(ltd, index)->ltd_recovery_thread != NULL) {
294 struct ptlrpc_thread *thread;
296 thread = LTD_TGT(ltd, index)->ltd_recovery_thread;
297 OBD_FREE_PTR(thread);
299 lod_tgt_pool_remove(<d->ltd_tgt_pool, index);
301 ltd_del_tgt(ltd, tgt_desc);
303 mutex_unlock(<d->ltd_mutex);
304 up_write(<d->ltd_rw_sem);
305 OBD_FREE_PTR(tgt_desc);
307 /* XXX OSP needs us to send down LCFG_CLEANUP because it uses
308 * objects from the MDT stack. See LU-7184. */
309 lcfg = &lod_env_info(env)->lti_lustre_cfg;
310 memset(lcfg, 0, sizeof(*lcfg));
311 lcfg->lcfg_version = LUSTRE_CFG_VERSION;
312 lcfg->lcfg_command = LCFG_CLEANUP;
313 lu_dev->ld_ops->ldo_process_config(env, lu_dev, lcfg);
322 * Schedule target removal from the target table.
324 * Mark the device as dead. The device is not removed here because it may
325 * still be in use. The device will be removed in lod_putref() when the
326 * last reference is released.
328 * \param[in] env execution environment for this thread
329 * \param[in] lod LOD device the target table belongs to
330 * \param[in] ltd target table
331 * \param[in] tgt target
333 static void __lod_del_device(const struct lu_env *env, struct lod_device *lod,
334 struct lod_tgt_descs *ltd, struct lu_tgt_desc *tgt)
336 lfsck_del_target(env, lod->lod_child, tgt->ltd_tgt, tgt->ltd_index,
339 if (ltd->ltd_is_mdt && tgt->ltd_recovery_thread)
340 OBD_FREE_PTR(tgt->ltd_recovery_thread);
342 if (!tgt->ltd_reap) {
344 ltd->ltd_death_row++;
349 * Schedule removal of all the targets from the given target table.
351 * See more details in the description for __lod_del_device()
353 * \param[in] env execution environment for this thread
354 * \param[in] lod LOD device the target table belongs to
355 * \param[in] ltd target table
359 int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
360 struct lod_tgt_descs *ltd)
362 struct lu_tgt_desc *tgt;
364 if (ltd->ltd_tgts_size <= 0)
368 mutex_lock(<d->ltd_mutex);
369 ltd_foreach_tgt(ltd, tgt)
370 __lod_del_device(env, lod, ltd, tgt);
371 mutex_unlock(<d->ltd_mutex);
372 lod_putref(lod, ltd);
374 lu_tgt_descs_fini(ltd);
380 * Remove device by name.
382 * Remove a device identified by \a osp from the target table. Given
383 * the device can be in use, the real deletion happens in lod_putref().
385 * \param[in] env execution environment for this thread
386 * \param[in] lod LOD device to be connected to the new OSP
387 * \param[in] ltd target table
388 * \param[in] osp name of OSP device to be removed
389 * \param[in] idx index of the target
390 * \param[in] gen generation number, not used currently
392 * \retval 0 if the device was scheduled for removal
393 * \retval -EINVAL if no device was found
395 int lod_del_device(const struct lu_env *env, struct lod_device *lod,
396 struct lod_tgt_descs *ltd, char *osp, unsigned int idx,
399 struct obd_device *obd;
400 struct lu_tgt_desc *tgt;
401 struct obd_uuid uuid;
406 CDEBUG(D_CONFIG, "osp:%s idx:%d gen:%d\n", osp, idx, gen);
408 obd_str2uuid(&uuid, osp);
410 obd = class_find_client_obd(&uuid, LUSTRE_OSP_NAME,
411 &lod->lod_dt_dev.dd_lu_dev.ld_obd->obd_uuid);
413 CERROR("can't find %s device\n", osp);
418 CERROR("%s: request to remove OBD %s with invalid generation %d"
419 "\n", obd->obd_name, osp, gen);
423 obd_str2uuid(&uuid, osp);
426 mutex_lock(<d->ltd_mutex);
427 tgt = LTD_TGT(ltd, idx);
428 /* check that the index is allocated in the bitmap */
429 if (!cfs_bitmap_check(ltd->ltd_tgt_bitmap, idx) || !tgt) {
430 CERROR("%s: device %d is not set up\n", obd->obd_name, idx);
431 GOTO(out, rc = -EINVAL);
434 /* check that the UUID matches */
435 if (!obd_uuid_equals(&uuid, &tgt->ltd_uuid)) {
436 CERROR("%s: LOD target UUID %s at index %d does not match %s\n",
437 obd->obd_name, obd_uuid2str(&tgt->ltd_uuid), idx, osp);
438 GOTO(out, rc = -EINVAL);
441 __lod_del_device(env, lod, ltd, tgt);
444 mutex_unlock(<d->ltd_mutex);
445 lod_putref(lod, ltd);
450 * Resize per-thread storage to hold specified size.
452 * A helper function to resize per-thread temporary storage. This storage
453 * is used to process LOV/LVM EAs and may be quite large. We do not want to
454 * allocate/release it every time, so instead we put it into the env and
455 * reallocate on demand. The memory is released when the correspondent thread
458 * \param[in] info LOD-specific storage in the environment
459 * \param[in] size new size to grow the buffer to
461 * \retval 0 on success, -ENOMEM if reallocation failed
463 int lod_ea_store_resize(struct lod_thread_info *info, size_t size)
465 __u32 round = size_roundup_power2(size);
467 if (info->lti_ea_store) {
468 LASSERT(info->lti_ea_store_size);
469 LASSERT(info->lti_ea_store_size < round);
470 CDEBUG(D_INFO, "EA store size %d is not enough, need %d\n",
471 info->lti_ea_store_size, round);
472 OBD_FREE_LARGE(info->lti_ea_store, info->lti_ea_store_size);
473 info->lti_ea_store = NULL;
474 info->lti_ea_store_size = 0;
477 OBD_ALLOC_LARGE(info->lti_ea_store, round);
478 if (info->lti_ea_store == NULL)
480 info->lti_ea_store_size = round;
485 static void lod_free_comp_buffer(struct lod_layout_component *entries,
486 __u16 count, __u32 bufsize)
488 struct lod_layout_component *entry;
491 for (i = 0; i < count; i++) {
493 if (entry->llc_pool != NULL)
494 lod_set_pool(&entry->llc_pool, NULL);
495 if (entry->llc_ostlist.op_array)
496 OBD_FREE(entry->llc_ostlist.op_array,
497 entry->llc_ostlist.op_size);
498 LASSERT(entry->llc_stripe == NULL);
499 LASSERT(entry->llc_stripes_allocated == 0);
503 OBD_FREE_LARGE(entries, bufsize);
506 void lod_free_def_comp_entries(struct lod_default_striping *lds)
508 lod_free_comp_buffer(lds->lds_def_comp_entries,
509 lds->lds_def_comp_size_cnt,
511 sizeof(*lds->lds_def_comp_entries) *
512 lds->lds_def_comp_size_cnt));
513 lds->lds_def_comp_entries = NULL;
514 lds->lds_def_comp_cnt = 0;
515 lds->lds_def_striping_is_composite = 0;
516 lds->lds_def_comp_size_cnt = 0;
520 * Resize per-thread storage to hold default striping component entries
522 * A helper function to resize per-thread temporary storage. This storage
523 * is used to hold default LOV/LVM EAs and may be quite large. We do not want
524 * to allocate/release it every time, so instead we put it into the env and
525 * reallocate it on demand. The memory is released when the correspondent
526 * thread is finished.
528 * \param[in,out] lds default striping
529 * \param[in] count new component count to grow the buffer to
531 * \retval 0 on success, -ENOMEM if reallocation failed
533 int lod_def_striping_comp_resize(struct lod_default_striping *lds, __u16 count)
535 struct lod_layout_component *entries;
536 __u32 new = size_roundup_power2(sizeof(*lds->lds_def_comp_entries) *
538 __u32 old = size_roundup_power2(sizeof(*lds->lds_def_comp_entries) *
539 lds->lds_def_comp_size_cnt);
544 OBD_ALLOC_LARGE(entries, new);
548 if (lds->lds_def_comp_entries != NULL) {
549 CDEBUG(D_INFO, "default striping component size %d is not "
550 "enough, need %d\n", old, new);
551 lod_free_def_comp_entries(lds);
554 lds->lds_def_comp_entries = entries;
555 lds->lds_def_comp_size_cnt = count;
560 void lod_free_comp_entries(struct lod_object *lo)
562 if (lo->ldo_mirrors) {
563 OBD_FREE(lo->ldo_mirrors,
564 sizeof(*lo->ldo_mirrors) * lo->ldo_mirror_count);
565 lo->ldo_mirrors = NULL;
566 lo->ldo_mirror_count = 0;
568 lod_free_comp_buffer(lo->ldo_comp_entries,
570 sizeof(*lo->ldo_comp_entries) * lo->ldo_comp_cnt);
571 lo->ldo_comp_entries = NULL;
572 lo->ldo_comp_cnt = 0;
573 lo->ldo_is_composite = 0;
576 int lod_alloc_comp_entries(struct lod_object *lo,
577 int mirror_count, int comp_count)
579 LASSERT(comp_count != 0);
580 LASSERT(lo->ldo_comp_cnt == 0 && lo->ldo_comp_entries == NULL);
582 if (mirror_count > 0) {
583 OBD_ALLOC(lo->ldo_mirrors,
584 sizeof(*lo->ldo_mirrors) * mirror_count);
585 if (!lo->ldo_mirrors)
588 lo->ldo_mirror_count = mirror_count;
591 OBD_ALLOC_LARGE(lo->ldo_comp_entries,
592 sizeof(*lo->ldo_comp_entries) * comp_count);
593 if (lo->ldo_comp_entries == NULL) {
594 OBD_FREE(lo->ldo_mirrors,
595 sizeof(*lo->ldo_mirrors) * mirror_count);
596 lo->ldo_mirror_count = 0;
600 lo->ldo_comp_cnt = comp_count;
604 int lod_fill_mirrors(struct lod_object *lo)
606 struct lod_layout_component *lod_comp;
608 __u16 mirror_id = 0xffff;
612 LASSERT(equi(!lo->ldo_is_composite, lo->ldo_mirror_count == 0));
614 if (!lo->ldo_is_composite)
617 lod_comp = &lo->ldo_comp_entries[0];
618 for (i = 0; i < lo->ldo_comp_cnt; i++, lod_comp++) {
619 int stale = !!(lod_comp->llc_flags & LCME_FL_STALE);
620 int preferred = !!(lod_comp->llc_flags & LCME_FL_PREF_WR);
622 if (mirror_id_of(lod_comp->llc_id) == mirror_id) {
623 lo->ldo_mirrors[mirror_idx].lme_stale |= stale;
624 lo->ldo_mirrors[mirror_idx].lme_primary |= preferred;
625 lo->ldo_mirrors[mirror_idx].lme_end = i;
631 if (mirror_idx >= lo->ldo_mirror_count)
634 mirror_id = mirror_id_of(lod_comp->llc_id);
636 lo->ldo_mirrors[mirror_idx].lme_id = mirror_id;
637 lo->ldo_mirrors[mirror_idx].lme_stale = stale;
638 lo->ldo_mirrors[mirror_idx].lme_primary = preferred;
639 lo->ldo_mirrors[mirror_idx].lme_start = i;
640 lo->ldo_mirrors[mirror_idx].lme_end = i;
642 if (mirror_idx != lo->ldo_mirror_count - 1)
649 * Generate on-disk lov_mds_md structure for each layout component based on
650 * the information in lod_object->ldo_comp_entries[i].
652 * \param[in] env execution environment for this thread
653 * \param[in] lo LOD object
654 * \param[in] comp_idx index of ldo_comp_entries
655 * \param[in] lmm buffer to cotain the on-disk lov_mds_md
656 * \param[in|out] lmm_size buffer size/lmm size
657 * \param[in] is_dir generate lov ea for dir or file? For dir case,
658 * the stripe info is from the default stripe
659 * template, which is collected in lod_ah_init(),
660 * either from parent object or root object; for
661 * file case, it's from the @lo object
663 * \retval 0 if on disk structure is created successfully
664 * \retval negative error number on failure
666 static int lod_gen_component_ea(const struct lu_env *env,
667 struct lod_object *lo, int comp_idx,
668 struct lov_mds_md *lmm, int *lmm_size,
671 struct lod_thread_info *info = lod_env_info(env);
672 const struct lu_fid *fid = lu_object_fid(&lo->ldo_obj.do_lu);
673 struct lod_device *lod;
674 struct lov_ost_data_v1 *objs;
675 struct lod_layout_component *lod_comp;
684 &lo->ldo_def_striping->lds_def_comp_entries[comp_idx];
686 lod_comp = &lo->ldo_comp_entries[comp_idx];
688 magic = lod_comp->llc_pool != NULL ? LOV_MAGIC_V3 : LOV_MAGIC_V1;
689 if (lod_comp->llc_pattern == 0) /* default striping */
690 lod_comp->llc_pattern = LOV_PATTERN_RAID0;
692 lmm->lmm_magic = cpu_to_le32(magic);
693 lmm->lmm_pattern = cpu_to_le32(lod_comp->llc_pattern);
694 fid_to_lmm_oi(fid, &lmm->lmm_oi);
695 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_LMMOI))
696 lmm->lmm_oi.oi.oi_id++;
697 lmm_oi_cpu_to_le(&lmm->lmm_oi, &lmm->lmm_oi);
699 lmm->lmm_stripe_size = cpu_to_le32(lod_comp->llc_stripe_size);
700 lmm->lmm_stripe_count = cpu_to_le16(lod_comp->llc_stripe_count);
702 * for dir and uninstantiated component, lmm_layout_gen stores
703 * default stripe offset.
705 lmm->lmm_layout_gen =
706 (is_dir || !lod_comp_inited(lod_comp)) ?
707 cpu_to_le16(lod_comp->llc_stripe_offset) :
708 cpu_to_le16(lod_comp->llc_layout_gen);
710 if (magic == LOV_MAGIC_V1) {
711 objs = &lmm->lmm_objects[0];
713 struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *)lmm;
714 size_t cplen = strlcpy(v3->lmm_pool_name,
716 sizeof(v3->lmm_pool_name));
717 if (cplen >= sizeof(v3->lmm_pool_name))
719 objs = &v3->lmm_objects[0];
721 stripe_count = lod_comp_entry_stripe_count(lo, lod_comp, is_dir);
722 if (stripe_count == 0 && !is_dir &&
723 !(lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED) &&
724 !(lod_comp->llc_pattern & LOV_PATTERN_MDT))
727 if (!is_dir && lo->ldo_is_composite)
728 lod_comp_shrink_stripe_count(lod_comp, &stripe_count);
730 if (is_dir || lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED)
733 /* generate ost_idx of this component stripe */
734 lod = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
735 for (i = 0; i < stripe_count; i++) {
736 struct dt_object *object;
737 __u32 ost_idx = (__u32)-1UL;
738 int type = LU_SEQ_RANGE_OST;
740 if (lod_comp->llc_stripe && lod_comp->llc_stripe[i]) {
741 object = lod_comp->llc_stripe[i];
742 /* instantiated component */
743 info->lti_fid = *lu_object_fid(&object->do_lu);
745 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_MULTIPLE_REF) &&
747 if (cfs_fail_val == 0)
748 cfs_fail_val = info->lti_fid.f_oid;
750 info->lti_fid.f_oid = cfs_fail_val;
753 rc = fid_to_ostid(&info->lti_fid, &info->lti_ostid);
756 ostid_cpu_to_le(&info->lti_ostid, &objs[i].l_ost_oi);
757 objs[i].l_ost_gen = cpu_to_le32(0);
758 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_FLD_LOOKUP))
761 rc = lod_fld_lookup(env, lod, &info->lti_fid,
764 CERROR("%s: Can not locate "DFID": rc = %d\n",
765 lod2obd(lod)->obd_name,
766 PFID(&info->lti_fid), rc);
769 } else if (lod_comp->llc_ostlist.op_array &&
770 lod_comp->llc_ostlist.op_count) {
771 /* user specified ost list */
772 ost_idx = lod_comp->llc_ostlist.op_array[i];
775 * with un-instantiated or with no specified ost list
776 * component, its l_ost_idx does not matter.
778 objs[i].l_ost_idx = cpu_to_le32(ost_idx);
781 if (lmm_size != NULL)
782 *lmm_size = lov_mds_md_size(stripe_count, magic);
787 * Generate on-disk lov_mds_md structure based on the information in
788 * the lod_object->ldo_comp_entries.
790 * \param[in] env execution environment for this thread
791 * \param[in] lo LOD object
792 * \param[in] lmm buffer to cotain the on-disk lov_mds_md
793 * \param[in|out] lmm_size buffer size/lmm size
794 * \param[in] is_dir generate lov ea for dir or file? For dir case,
795 * the stripe info is from the default stripe
796 * template, which is collected in lod_ah_init(),
797 * either from parent object or root object; for
798 * file case, it's from the @lo object
800 * \retval 0 if on disk structure is created successfully
801 * \retval negative error number on failure
803 int lod_generate_lovea(const struct lu_env *env, struct lod_object *lo,
804 struct lov_mds_md *lmm, int *lmm_size, bool is_dir)
806 struct lov_comp_md_entry_v1 *lcme;
807 struct lov_comp_md_v1 *lcm;
808 struct lod_layout_component *comp_entries;
809 __u16 comp_cnt, mirror_cnt;
810 bool is_composite, is_foreign = false;
811 int i, rc = 0, offset;
815 comp_cnt = lo->ldo_def_striping->lds_def_comp_cnt;
816 mirror_cnt = lo->ldo_def_striping->lds_def_mirror_cnt;
817 comp_entries = lo->ldo_def_striping->lds_def_comp_entries;
819 lo->ldo_def_striping->lds_def_striping_is_composite;
821 comp_cnt = lo->ldo_comp_cnt;
822 mirror_cnt = lo->ldo_mirror_count;
823 comp_entries = lo->ldo_comp_entries;
824 is_composite = lo->ldo_is_composite;
825 is_foreign = lo->ldo_is_foreign;
828 LASSERT(lmm_size != NULL);
831 struct lov_foreign_md *lfm;
833 lfm = (struct lov_foreign_md *)lmm;
834 memcpy(lfm, lo->ldo_foreign_lov, lo->ldo_foreign_lov_size);
835 /* need to store little-endian */
836 if (cpu_to_le32(LOV_MAGIC_FOREIGN) != LOV_MAGIC_FOREIGN) {
837 __swab32s(&lfm->lfm_magic);
838 __swab32s(&lfm->lfm_length);
839 __swab32s(&lfm->lfm_type);
840 __swab32s(&lfm->lfm_flags);
842 *lmm_size = lo->ldo_foreign_lov_size;
846 LASSERT(comp_cnt != 0 && comp_entries != NULL);
849 rc = lod_gen_component_ea(env, lo, 0, lmm, lmm_size, is_dir);
853 lcm = (struct lov_comp_md_v1 *)lmm;
854 memset(lcm, 0, sizeof(*lcm));
856 lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_COMP_V1);
857 lcm->lcm_entry_count = cpu_to_le16(comp_cnt);
858 lcm->lcm_mirror_count = cpu_to_le16(mirror_cnt - 1);
859 lcm->lcm_flags = cpu_to_le16(lo->ldo_flr_state);
861 offset = sizeof(*lcm) + sizeof(*lcme) * comp_cnt;
862 LASSERT(offset % sizeof(__u64) == 0);
864 for (i = 0; i < comp_cnt; i++) {
865 struct lod_layout_component *lod_comp;
866 struct lov_mds_md *sub_md;
869 lod_comp = &comp_entries[i];
870 lcme = &lcm->lcm_entries[i];
872 LASSERT(ergo(!is_dir, lod_comp->llc_id != LCME_ID_INVAL));
873 lcme->lcme_id = cpu_to_le32(lod_comp->llc_id);
875 /* component could be un-inistantiated */
876 lcme->lcme_flags = cpu_to_le32(lod_comp->llc_flags);
877 if (lod_comp->llc_flags & LCME_FL_NOSYNC)
878 lcme->lcme_timestamp =
879 cpu_to_le64(lod_comp->llc_timestamp);
880 if (lod_comp->llc_flags & LCME_FL_EXTENSION && !is_dir)
881 lcm->lcm_magic = cpu_to_le32(LOV_MAGIC_SEL);
883 lcme->lcme_extent.e_start =
884 cpu_to_le64(lod_comp->llc_extent.e_start);
885 lcme->lcme_extent.e_end =
886 cpu_to_le64(lod_comp->llc_extent.e_end);
887 lcme->lcme_offset = cpu_to_le32(offset);
889 sub_md = (struct lov_mds_md *)((char *)lcm + offset);
890 rc = lod_gen_component_ea(env, lo, i, sub_md, &size, is_dir);
893 lcme->lcme_size = cpu_to_le32(size);
895 LASSERTF((offset <= *lmm_size) && (offset % sizeof(__u64) == 0),
896 "offset:%d lmm_size:%d\n", offset, *lmm_size);
898 lcm->lcm_size = cpu_to_le32(offset);
899 lcm->lcm_layout_gen = cpu_to_le32(is_dir ? 0 : lo->ldo_layout_gen);
901 lustre_print_user_md(D_LAYOUT, (struct lov_user_md *)lmm,
912 * Fill lti_ea_store buffer in the environment with a value for the given
913 * EA. The buffer is reallocated if the value doesn't fit.
915 * \param[in,out] env execution environment for this thread
916 * .lti_ea_store buffer is filled with EA's value
917 * \param[in] lo LOD object
918 * \param[in] name name of the EA
920 * \retval > 0 if EA is fetched successfully
921 * \retval 0 if EA is empty
922 * \retval negative error number on failure
924 int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
927 struct lod_thread_info *info = lod_env_info(env);
928 struct dt_object *next = dt_object_child(&lo->ldo_obj);
934 if (unlikely(info->lti_ea_store == NULL)) {
935 /* just to enter in allocation block below */
939 info->lti_buf.lb_buf = info->lti_ea_store;
940 info->lti_buf.lb_len = info->lti_ea_store_size;
941 rc = dt_xattr_get(env, next, &info->lti_buf, name);
944 /* if object is not striped or inaccessible */
945 if (rc == -ENODATA || rc == -ENOENT)
949 /* EA doesn't fit, reallocate new buffer */
950 rc = dt_xattr_get(env, next, &LU_BUF_NULL, name);
951 if (rc == -ENODATA || rc == -ENOENT)
957 rc = lod_ea_store_resize(info, rc);
967 * Verify the target index is present in the current configuration.
969 * \param[in] md LOD device where the target table is stored
970 * \param[in] idx target's index
972 * \retval 0 if the index is present
973 * \retval -EINVAL if not
975 static int validate_lod_and_idx(struct lod_device *md, __u32 idx)
977 if (unlikely(idx >= md->lod_ost_descs.ltd_tgts_size ||
978 !cfs_bitmap_check(md->lod_ost_bitmap, idx))) {
979 CERROR("%s: bad idx: %d of %d\n", lod2obd(md)->obd_name, idx,
980 md->lod_ost_descs.ltd_tgts_size);
984 if (unlikely(OST_TGT(md, idx) == NULL)) {
985 CERROR("%s: bad lod_tgt_desc for idx: %d\n",
986 lod2obd(md)->obd_name, idx);
990 if (unlikely(OST_TGT(md, idx)->ltd_tgt == NULL)) {
991 CERROR("%s: invalid lod device, for idx: %d\n",
992 lod2obd(md)->obd_name , idx);
1000 * Instantiate objects for stripes.
1002 * Allocate and initialize LU-objects representing the stripes. The number
1003 * of the stripes (ldo_stripe_count) must be initialized already. The caller
1004 * must ensure nobody else is calling the function on the object at the same
1005 * time. FLDB service must be running to be able to map a FID to the targets
1006 * and find appropriate device representing that target.
1008 * \param[in] env execution environment for this thread
1009 * \param[in,out] lo LOD object
1010 * \param[in] objs an array of IDs to creates the objects from
1011 * \param[in] comp_idx index of ldo_comp_entries
1013 * \retval 0 if the objects are instantiated successfully
1014 * \retval negative error number on failure
1016 int lod_initialize_objects(const struct lu_env *env, struct lod_object *lo,
1017 struct lov_ost_data_v1 *objs, int comp_idx)
1019 struct lod_layout_component *lod_comp;
1020 struct lod_thread_info *info = lod_env_info(env);
1021 struct lod_device *md;
1022 struct lu_object *o, *n;
1023 struct lu_device *nd;
1024 struct dt_object **stripe = NULL;
1025 __u32 *ost_indices = NULL;
1031 LASSERT(lo != NULL);
1032 md = lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
1034 LASSERT(lo->ldo_comp_cnt != 0 && lo->ldo_comp_entries != NULL);
1035 lod_comp = &lo->ldo_comp_entries[comp_idx];
1037 LASSERT(lod_comp->llc_stripe == NULL);
1038 LASSERT(lod_comp->llc_stripe_count > 0);
1039 LASSERT(lod_comp->llc_stripe_size > 0);
1041 stripe_len = lod_comp->llc_stripe_count;
1042 OBD_ALLOC(stripe, sizeof(stripe[0]) * stripe_len);
1045 OBD_ALLOC(ost_indices, sizeof(*ost_indices) * stripe_len);
1047 GOTO(out, rc = -ENOMEM);
1049 for (i = 0; i < lod_comp->llc_stripe_count; i++) {
1050 if (unlikely(lovea_slot_is_dummy(&objs[i])))
1053 ostid_le_to_cpu(&objs[i].l_ost_oi, &info->lti_ostid);
1054 idx = le32_to_cpu(objs[i].l_ost_idx);
1055 rc = ostid_to_fid(&info->lti_fid, &info->lti_ostid, idx);
1058 LASSERTF(fid_is_sane(&info->lti_fid), ""DFID" insane!\n",
1059 PFID(&info->lti_fid));
1060 lod_getref(&md->lod_ost_descs);
1062 rc = validate_lod_and_idx(md, idx);
1063 if (unlikely(rc != 0)) {
1064 lod_putref(md, &md->lod_ost_descs);
1068 nd = &OST_TGT(md, idx)->ltd_tgt->dd_lu_dev;
1069 lod_putref(md, &md->lod_ost_descs);
1071 /* In the function below, .hs_keycmp resolves to
1072 * u_obj_hop_keycmp() */
1073 /* coverity[overrun-buffer-val] */
1074 o = lu_object_find_at(env, nd, &info->lti_fid, NULL);
1076 GOTO(out, rc = PTR_ERR(o));
1078 n = lu_object_locate(o->lo_header, nd->ld_type);
1081 stripe[i] = container_of(n, struct dt_object, do_lu);
1082 ost_indices[i] = idx;
1087 for (i = 0; i < stripe_len; i++)
1088 if (stripe[i] != NULL)
1089 dt_object_put(env, stripe[i]);
1091 OBD_FREE(stripe, sizeof(stripe[0]) * stripe_len);
1092 lod_comp->llc_stripe_count = 0;
1094 OBD_FREE(ost_indices,
1095 sizeof(*ost_indices) * stripe_len);
1097 lod_comp->llc_stripe = stripe;
1098 lod_comp->llc_ost_indices = ost_indices;
1099 lod_comp->llc_stripes_allocated = stripe_len;
1106 * Instantiate objects for striping.
1108 * Parse striping information in \a buf and instantiate the objects
1109 * representing the stripes.
1111 * \param[in] env execution environment for this thread
1112 * \param[in] lo LOD object
1113 * \param[in] buf buffer storing LOV EA to parse
1115 * \retval 0 if parsing and objects creation succeed
1116 * \retval negative error number on failure
1118 int lod_parse_striping(const struct lu_env *env, struct lod_object *lo,
1119 const struct lu_buf *buf)
1121 struct lov_mds_md_v1 *lmm;
1122 struct lov_comp_md_v1 *comp_v1 = NULL;
1123 struct lov_foreign_md *foreign = NULL;
1124 struct lov_ost_data_v1 *objs;
1125 __u32 magic, pattern;
1126 __u16 mirror_cnt = 0;
1132 LASSERT(buf->lb_buf);
1133 LASSERT(buf->lb_len);
1134 LASSERT(mutex_is_locked(&lo->ldo_layout_mutex));
1136 lmm = (struct lov_mds_md_v1 *)buf->lb_buf;
1137 magic = le32_to_cpu(lmm->lmm_magic);
1139 if (magic != LOV_MAGIC_V1 && magic != LOV_MAGIC_V3 &&
1140 magic != LOV_MAGIC_COMP_V1 && magic != LOV_MAGIC_FOREIGN &&
1141 magic != LOV_MAGIC_SEL)
1142 GOTO(out, rc = -EINVAL);
1144 if (lo->ldo_is_foreign)
1145 lod_free_foreign_lov(lo);
1147 lod_free_comp_entries(lo);
1149 if (magic == LOV_MAGIC_COMP_V1 || magic == LOV_MAGIC_SEL) {
1150 comp_v1 = (struct lov_comp_md_v1 *)lmm;
1151 comp_cnt = le16_to_cpu(comp_v1->lcm_entry_count);
1153 GOTO(out, rc = -EINVAL);
1154 lo->ldo_layout_gen = le32_to_cpu(comp_v1->lcm_layout_gen);
1155 lo->ldo_is_composite = 1;
1156 lo->ldo_flr_state = le16_to_cpu(comp_v1->lcm_flags) &
1158 mirror_cnt = le16_to_cpu(comp_v1->lcm_mirror_count) + 1;
1159 } else if (magic == LOV_MAGIC_FOREIGN) {
1162 foreign = (struct lov_foreign_md *)buf->lb_buf;
1163 length = offsetof(typeof(*foreign), lfm_value);
1164 if (buf->lb_len < length ||
1165 buf->lb_len < (length + le32_to_cpu(foreign->lfm_length))) {
1167 "buf len %zu too small for lov_foreign_md\n",
1169 GOTO(out, rc = -EINVAL);
1172 /* just cache foreign LOV EA raw */
1173 rc = lod_alloc_foreign_lov(lo, length);
1176 memcpy(lo->ldo_foreign_lov, buf->lb_buf, length);
1180 lo->ldo_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
1181 lo->ldo_is_composite = 0;
1184 rc = lod_alloc_comp_entries(lo, mirror_cnt, comp_cnt);
1188 for (i = 0; i < comp_cnt; i++) {
1189 struct lod_layout_component *lod_comp;
1190 struct lu_extent *ext;
1193 lod_comp = &lo->ldo_comp_entries[i];
1194 if (lo->ldo_is_composite) {
1195 offs = le32_to_cpu(comp_v1->lcm_entries[i].lcme_offset);
1196 lmm = (struct lov_mds_md_v1 *)((char *)comp_v1 + offs);
1198 ext = &comp_v1->lcm_entries[i].lcme_extent;
1199 lod_comp->llc_extent.e_start =
1200 le64_to_cpu(ext->e_start);
1201 lod_comp->llc_extent.e_end = le64_to_cpu(ext->e_end);
1202 lod_comp->llc_flags =
1203 le32_to_cpu(comp_v1->lcm_entries[i].lcme_flags);
1204 if (lod_comp->llc_flags & LCME_FL_NOSYNC)
1205 lod_comp->llc_timestamp = le64_to_cpu(
1206 comp_v1->lcm_entries[i].lcme_timestamp);
1208 le32_to_cpu(comp_v1->lcm_entries[i].lcme_id);
1209 if (lod_comp->llc_id == LCME_ID_INVAL)
1210 GOTO(out, rc = -EINVAL);
1212 if ((lod_comp->llc_flags & LCME_FL_EXTENSION) &&
1213 comp_v1->lcm_magic != cpu_to_le32(LOV_MAGIC_SEL)) {
1214 struct lod_device *d =
1215 lu2lod_dev(lo->ldo_obj.do_lu.lo_dev);
1217 CWARN("%s: EXTENSION flags=%x set on component[%u]=%x of non-SEL file "DFID" with magic=%#08x\n",
1218 lod2obd(d)->obd_name,
1219 lod_comp->llc_flags, lod_comp->llc_id, i,
1220 PFID(lod_object_fid(lo)),
1221 le32_to_cpu(comp_v1->lcm_magic));
1224 lod_comp_set_init(lod_comp);
1227 pattern = le32_to_cpu(lmm->lmm_pattern);
1228 if (!lov_pattern_supported(lov_pattern(pattern)))
1229 GOTO(out, rc = -EINVAL);
1231 lod_comp->llc_pattern = pattern;
1232 lod_comp->llc_stripe_size = le32_to_cpu(lmm->lmm_stripe_size);
1233 lod_comp->llc_stripe_count = le16_to_cpu(lmm->lmm_stripe_count);
1234 lod_comp->llc_layout_gen = le16_to_cpu(lmm->lmm_layout_gen);
1236 if (lmm->lmm_magic == cpu_to_le32(LOV_MAGIC_V3)) {
1237 struct lov_mds_md_v3 *v3 = (struct lov_mds_md_v3 *)lmm;
1239 lod_set_pool(&lod_comp->llc_pool, v3->lmm_pool_name);
1240 objs = &v3->lmm_objects[0];
1242 lod_set_pool(&lod_comp->llc_pool, NULL);
1243 objs = &lmm->lmm_objects[0];
1247 * If uninstantiated template component has valid l_ost_idx,
1248 * then user has specified ost list for this component.
1250 if (!lod_comp_inited(lod_comp)) {
1253 if (objs[0].l_ost_idx != (__u32)-1UL) {
1256 stripe_count = lod_comp_entry_stripe_count(
1257 lo, lod_comp, false);
1258 if (stripe_count == 0 &&
1259 !(lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED) &&
1260 !(lod_comp->llc_pattern & LOV_PATTERN_MDT))
1261 GOTO(out, rc = -E2BIG);
1263 * load the user specified ost list, when this
1264 * component is instantiated later, it will be
1265 * used in lod_alloc_ost_list().
1267 lod_comp->llc_ostlist.op_count = stripe_count;
1268 lod_comp->llc_ostlist.op_size =
1269 stripe_count * sizeof(__u32);
1270 OBD_ALLOC(lod_comp->llc_ostlist.op_array,
1271 lod_comp->llc_ostlist.op_size);
1272 if (!lod_comp->llc_ostlist.op_array)
1273 GOTO(out, rc = -ENOMEM);
1275 for (j = 0; j < stripe_count; j++)
1276 lod_comp->llc_ostlist.op_array[j] =
1277 le32_to_cpu(objs[j].l_ost_idx);
1280 * this component OST objects starts from the
1281 * first ost_idx, lod_alloc_ost_list() will
1284 lod_comp->llc_stripe_offset = objs[0].l_ost_idx;
1287 * for uninstantiated component,
1288 * lmm_layout_gen stores default stripe offset.
1290 lod_comp->llc_stripe_offset =
1291 lmm->lmm_layout_gen;
1295 /* skip un-instantiated component object initialization */
1296 if (!lod_comp_inited(lod_comp))
1299 if (!(lod_comp->llc_pattern & LOV_PATTERN_F_RELEASED) &&
1300 !(lod_comp->llc_pattern & LOV_PATTERN_MDT)) {
1301 rc = lod_initialize_objects(env, lo, objs, i);
1307 rc = lod_fill_mirrors(lo);
1313 lod_striping_free_nolock(env, lo);
1318 * Check whether the striping (LOVEA for regular file, LMVEA for directory)
1319 * is already cached.
1321 * \param[in] lo LOD object
1323 * \retval True if the striping is cached, otherwise
1326 static bool lod_striping_loaded(struct lod_object *lo)
1328 if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr) &&
1329 lo->ldo_comp_cached)
1332 if (S_ISDIR(lod2lu_obj(lo)->lo_header->loh_attr)) {
1333 if (lo->ldo_dir_stripe_loaded)
1336 /* Never load LMV stripe for slaves of striped dir */
1337 if (lo->ldo_dir_slave_stripe)
1345 * A generic function to initialize the stripe objects.
1347 * A protected version of lod_striping_load_locked() - load the striping
1348 * information from storage, parse that and instantiate LU objects to
1349 * represent the stripes. The LOD object \a lo supplies a pointer to the
1350 * next sub-object in the LU stack so we can lock it. Also use \a lo to
1351 * return an array of references to the newly instantiated objects.
1353 * \param[in] env execution environment for this thread
1354 * \param[in,out] lo LOD object, where striping is stored and
1355 * which gets an array of references
1357 * \retval 0 if parsing and object creation succeed
1358 * \retval negative error number on failure
1360 int lod_striping_load(const struct lu_env *env, struct lod_object *lo)
1362 struct lod_thread_info *info = lod_env_info(env);
1363 struct dt_object *next = dt_object_child(&lo->ldo_obj);
1364 struct lu_buf *buf = &info->lti_buf;
1369 if (!dt_object_exists(next))
1372 if (lod_striping_loaded(lo))
1375 mutex_lock(&lo->ldo_layout_mutex);
1376 if (lod_striping_loaded(lo))
1377 GOTO(unlock, rc = 0);
1379 if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr)) {
1380 rc = lod_get_lov_ea(env, lo);
1385 * there is LOV EA (striping information) in this object
1386 * let's parse it and create in-core objects for the stripes
1388 buf->lb_buf = info->lti_ea_store;
1389 buf->lb_len = info->lti_ea_store_size;
1390 rc = lod_parse_striping(env, lo, buf);
1392 lo->ldo_comp_cached = 1;
1393 } else if (S_ISDIR(lod2lu_obj(lo)->lo_header->loh_attr)) {
1394 rc = lod_get_lmv_ea(env, lo);
1395 if (rc > sizeof(struct lmv_foreign_md)) {
1396 struct lmv_foreign_md *lfm = info->lti_ea_store;
1398 if (le32_to_cpu(lfm->lfm_magic) == LMV_MAGIC_FOREIGN) {
1399 lo->ldo_foreign_lmv = info->lti_ea_store;
1400 lo->ldo_foreign_lmv_size =
1401 info->lti_ea_store_size;
1402 info->lti_ea_store = NULL;
1403 info->lti_ea_store_size = 0;
1405 lo->ldo_dir_stripe_loaded = 1;
1406 lo->ldo_dir_is_foreign = 1;
1407 GOTO(unlock, rc = 0);
1411 if (rc < (int)sizeof(struct lmv_mds_md_v1)) {
1412 /* Let's set stripe_loaded to avoid further
1413 * stripe loading especially for non-stripe directory,
1414 * which can hurt performance. (See LU-9840)
1417 lo->ldo_dir_stripe_loaded = 1;
1418 GOTO(unlock, rc = rc > 0 ? -EINVAL : rc);
1420 buf->lb_buf = info->lti_ea_store;
1421 buf->lb_len = info->lti_ea_store_size;
1422 if (rc == sizeof(struct lmv_mds_md_v1)) {
1423 rc = lod_load_lmv_shards(env, lo, buf, true);
1424 if (buf->lb_buf != info->lti_ea_store) {
1425 OBD_FREE_LARGE(info->lti_ea_store,
1426 info->lti_ea_store_size);
1427 info->lti_ea_store = buf->lb_buf;
1428 info->lti_ea_store_size = buf->lb_len;
1436 * there is LMV EA (striping information) in this object
1437 * let's parse it and create in-core objects for the stripes
1439 rc = lod_parse_dir_striping(env, lo, buf);
1441 lo->ldo_dir_stripe_loaded = 1;
1445 mutex_unlock(&lo->ldo_layout_mutex);
1450 int lod_striping_reload(const struct lu_env *env, struct lod_object *lo,
1451 const struct lu_buf *buf)
1457 mutex_lock(&lo->ldo_layout_mutex);
1458 lod_striping_free_nolock(env, lo);
1459 rc = lod_parse_striping(env, lo, buf);
1460 mutex_unlock(&lo->ldo_layout_mutex);
1466 * Verify lov_user_md_v1/v3 striping.
1468 * Check the validity of all fields including the magic, stripe size,
1469 * stripe count, stripe offset and that the pool is present. Also check
1470 * that each target index points to an existing target. The additional
1471 * \a is_from_disk turns additional checks. In some cases zero fields
1472 * are allowed (like pattern=0).
1474 * \param[in] d LOD device
1475 * \param[in] buf buffer with LOV EA to verify
1476 * \param[in] is_from_disk 0 - from user, allow some fields to be 0
1477 * 1 - from disk, do not allow
1479 * \retval 0 if the striping is valid
1480 * \retval -EINVAL if striping is invalid
1482 static int lod_verify_v1v3(struct lod_device *d, const struct lu_buf *buf,
1485 struct lov_user_md_v1 *lum;
1486 struct lov_user_md_v3 *lum3;
1487 struct pool_desc *pool = NULL;
1491 __u16 stripe_offset;
1498 if (buf->lb_len < sizeof(*lum)) {
1499 CDEBUG(D_LAYOUT, "buf len %zu too small for lov_user_md\n",
1501 GOTO(out, rc = -EINVAL);
1504 magic = le32_to_cpu(lum->lmm_magic) & ~LOV_MAGIC_DEFINED;
1505 if (magic != LOV_USER_MAGIC_V1 &&
1506 magic != LOV_USER_MAGIC_V3 &&
1507 magic != LOV_USER_MAGIC_SPECIFIC) {
1508 CDEBUG(D_LAYOUT, "bad userland LOV MAGIC: %#x\n",
1509 le32_to_cpu(lum->lmm_magic));
1510 GOTO(out, rc = -EINVAL);
1513 /* the user uses "0" for default stripe pattern normally. */
1514 if (!is_from_disk && lum->lmm_pattern == LOV_PATTERN_NONE)
1515 lum->lmm_pattern = cpu_to_le32(LOV_PATTERN_RAID0);
1517 if (!lov_pattern_supported(le32_to_cpu(lum->lmm_pattern))) {
1518 CDEBUG(D_LAYOUT, "bad userland stripe pattern: %#x\n",
1519 le32_to_cpu(lum->lmm_pattern));
1520 GOTO(out, rc = -EINVAL);
1523 /* a released lum comes from creating orphan on hsm release,
1524 * doesn't make sense to verify it. */
1525 if (le32_to_cpu(lum->lmm_pattern) & LOV_PATTERN_F_RELEASED)
1528 /* 64kB is the largest common page size we see (ia64), and matches the
1530 stripe_size = le32_to_cpu(lum->lmm_stripe_size);
1531 if (stripe_size & (LOV_MIN_STRIPE_SIZE - 1)) {
1532 CDEBUG(D_LAYOUT, "stripe size %u not a multiple of %u\n",
1533 stripe_size, LOV_MIN_STRIPE_SIZE);
1534 GOTO(out, rc = -EINVAL);
1537 stripe_offset = le16_to_cpu(lum->lmm_stripe_offset);
1538 if (!is_from_disk && stripe_offset != LOV_OFFSET_DEFAULT &&
1539 lov_pattern(le32_to_cpu(lum->lmm_pattern)) != LOV_PATTERN_MDT) {
1540 /* if offset is not within valid range [0, osts_size) */
1541 if (stripe_offset >= d->lod_ost_descs.ltd_tgts_size) {
1542 CDEBUG(D_LAYOUT, "stripe offset %u >= bitmap size %u\n",
1543 stripe_offset, d->lod_ost_descs.ltd_tgts_size);
1544 GOTO(out, rc = -EINVAL);
1547 /* if lmm_stripe_offset is *not* in bitmap */
1548 if (!cfs_bitmap_check(d->lod_ost_bitmap, stripe_offset)) {
1549 CDEBUG(D_LAYOUT, "stripe offset %u not in bitmap\n",
1551 GOTO(out, rc = -EINVAL);
1555 if (magic == LOV_USER_MAGIC_V1)
1556 lum_size = offsetof(struct lov_user_md_v1,
1558 else if (magic == LOV_USER_MAGIC_V3 || magic == LOV_USER_MAGIC_SPECIFIC)
1559 lum_size = offsetof(struct lov_user_md_v3,
1562 GOTO(out, rc = -EINVAL);
1564 stripe_count = le16_to_cpu(lum->lmm_stripe_count);
1565 if (buf->lb_len < lum_size) {
1566 CDEBUG(D_LAYOUT, "invalid buf len %zu/%zu for lov_user_md with "
1567 "magic %#x and stripe_count %u\n",
1568 buf->lb_len, lum_size, magic, stripe_count);
1569 GOTO(out, rc = -EINVAL);
1572 if (!(magic == LOV_USER_MAGIC_V3 || magic == LOV_USER_MAGIC_SPECIFIC))
1576 /* In the function below, .hs_keycmp resolves to
1577 * pool_hashkey_keycmp() */
1578 /* coverity[overrun-buffer-val] */
1579 pool = lod_find_pool(d, lum3->lmm_pool_name);
1583 if (!is_from_disk && stripe_offset != LOV_OFFSET_DEFAULT) {
1584 rc = lod_check_index_in_pool(stripe_offset, pool);
1586 GOTO(out, rc = -EINVAL);
1589 if (is_from_disk && stripe_count > pool_tgt_count(pool)) {
1590 CDEBUG(D_LAYOUT, "stripe count %u > # OSTs %u in the pool\n",
1591 stripe_count, pool_tgt_count(pool));
1592 GOTO(out, rc = -EINVAL);
1597 lod_pool_putref(pool);
1603 struct lov_comp_md_entry_v1 *comp_entry_v1(struct lov_comp_md_v1 *comp, int i)
1605 LASSERTF((le32_to_cpu(comp->lcm_magic) & ~LOV_MAGIC_DEFINED) ==
1606 LOV_USER_MAGIC_COMP_V1, "Wrong magic %x\n",
1607 le32_to_cpu(comp->lcm_magic));
1608 LASSERTF(i >= 0 && i < le16_to_cpu(comp->lcm_entry_count),
1609 "bad index %d, max = %d\n",
1610 i, le16_to_cpu(comp->lcm_entry_count));
1612 return &comp->lcm_entries[i];
1615 #define for_each_comp_entry_v1(comp, entry) \
1616 for (entry = comp_entry_v1(comp, 0); \
1617 entry <= comp_entry_v1(comp, \
1618 le16_to_cpu(comp->lcm_entry_count) - 1); \
1621 int lod_erase_dom_stripe(struct lov_comp_md_v1 *comp_v1,
1622 struct lov_comp_md_entry_v1 *dom_ent)
1624 struct lov_comp_md_entry_v1 *ent;
1626 __u32 dom_off, dom_size, comp_size;
1627 void *blob_src, *blob_dst;
1628 unsigned int blob_size, blob_shift;
1630 entries = le16_to_cpu(comp_v1->lcm_entry_count) - 1;
1631 /* if file has only DoM stripe return just error */
1635 comp_size = le32_to_cpu(comp_v1->lcm_size);
1636 dom_off = le32_to_cpu(dom_ent->lcme_offset);
1637 dom_size = le32_to_cpu(dom_ent->lcme_size);
1639 /* shift entries array first */
1640 comp_v1->lcm_entry_count = cpu_to_le16(entries);
1641 memmove(dom_ent, dom_ent + 1,
1642 entries * sizeof(struct lov_comp_md_entry_v1));
1644 /* now move blob of layouts */
1645 blob_dst = (void *)comp_v1 + dom_off - sizeof(*dom_ent);
1646 blob_src = (void *)comp_v1 + dom_off + dom_size;
1647 blob_size = (unsigned long)((void *)comp_v1 + comp_size - blob_src);
1648 blob_shift = sizeof(*dom_ent) + dom_size;
1650 memmove(blob_dst, blob_src, blob_size);
1652 for_each_comp_entry_v1(comp_v1, ent) {
1655 off = le32_to_cpu(ent->lcme_offset);
1656 ent->lcme_offset = cpu_to_le32(off - blob_shift);
1659 comp_v1->lcm_size = cpu_to_le32(comp_size - blob_shift);
1661 /* notify a caller to re-check entry */
1665 int lod_fix_dom_stripe(struct lod_device *d, struct lov_comp_md_v1 *comp_v1,
1666 struct lov_comp_md_entry_v1 *dom_ent)
1668 struct lov_comp_md_entry_v1 *ent;
1669 struct lu_extent *dom_ext, *ext;
1670 struct lov_user_md_v1 *lum;
1675 dom_ext = &dom_ent->lcme_extent;
1676 dom_mid = mirror_id_of(le32_to_cpu(dom_ent->lcme_id));
1677 stripe_size = d->lod_dom_max_stripesize;
1679 lum = (void *)comp_v1 + le32_to_cpu(dom_ent->lcme_offset);
1680 CDEBUG(D_LAYOUT, "DoM component size %u was bigger than MDT limit %u, "
1681 "new size is %u\n", le32_to_cpu(lum->lmm_stripe_size),
1682 d->lod_dom_max_stripesize, stripe_size);
1683 lum->lmm_stripe_size = cpu_to_le32(stripe_size);
1685 for_each_comp_entry_v1(comp_v1, ent) {
1689 mid = mirror_id_of(le32_to_cpu(ent->lcme_id));
1693 ext = &ent->lcme_extent;
1694 if (ext->e_start != dom_ext->e_end)
1697 /* Found next component after the DoM one with the same
1698 * mirror_id and adjust its start with DoM component end.
1700 * NOTE: we are considering here that there can be only one
1701 * DoM component in a file, all replicas are located on OSTs
1702 * always and don't need adjustment since use own layouts.
1704 ext->e_start = cpu_to_le64(stripe_size);
1708 if (stripe_size == 0) {
1709 /* DoM component size is zero due to server setting,
1710 * remove it from the layout */
1711 rc = lod_erase_dom_stripe(comp_v1, dom_ent);
1713 /* Update DoM extent end finally */
1714 dom_ext->e_end = cpu_to_le64(stripe_size);
1721 * Verify LOV striping.
1723 * \param[in] d LOD device
1724 * \param[in] buf buffer with LOV EA to verify
1725 * \param[in] is_from_disk 0 - from user, allow some fields to be 0
1726 * 1 - from disk, do not allow
1727 * \param[in] start extent start for composite layout
1729 * \retval 0 if the striping is valid
1730 * \retval -EINVAL if striping is invalid
1732 int lod_verify_striping(struct lod_device *d, struct lod_object *lo,
1733 const struct lu_buf *buf, bool is_from_disk)
1735 struct lov_desc *desc = &d->lod_ost_descs.ltd_lov_desc;
1736 struct lov_user_md_v1 *lum;
1737 struct lov_comp_md_v1 *comp_v1;
1738 struct lov_comp_md_entry_v1 *ent;
1739 struct lu_extent *ext;
1742 __u32 stripe_size = 0;
1743 __u16 prev_mid = -1, mirror_id = -1;
1749 if (buf->lb_len < sizeof(lum->lmm_magic)) {
1750 CDEBUG(D_LAYOUT, "invalid buf len %zu\n", buf->lb_len);
1756 magic = le32_to_cpu(lum->lmm_magic) & ~LOV_MAGIC_DEFINED;
1757 /* treat foreign LOV EA/object case first
1758 * XXX is it expected to try setting again a foreign?
1759 * XXX should we care about different current vs new layouts ?
1761 if (unlikely(magic == LOV_USER_MAGIC_FOREIGN)) {
1762 struct lov_foreign_md *lfm = buf->lb_buf;
1764 if (buf->lb_len < offsetof(typeof(*lfm), lfm_value)) {
1766 "buf len %zu < min lov_foreign_md size (%zu)\n",
1767 buf->lb_len, offsetof(typeof(*lfm),
1772 if (foreign_size_le(lfm) > buf->lb_len) {
1774 "buf len %zu < this lov_foreign_md size (%zu)\n",
1775 buf->lb_len, foreign_size_le(lfm));
1778 /* Don't do anything with foreign layouts */
1782 /* normal LOV/layout cases */
1784 if (buf->lb_len < sizeof(*lum)) {
1785 CDEBUG(D_LAYOUT, "buf len %zu too small for lov_user_md\n",
1790 if (magic != LOV_USER_MAGIC_V1 &&
1791 magic != LOV_USER_MAGIC_V3 &&
1792 magic != LOV_USER_MAGIC_SPECIFIC &&
1793 magic != LOV_USER_MAGIC_COMP_V1) {
1794 CDEBUG(D_LAYOUT, "bad userland LOV MAGIC: %#x\n",
1795 le32_to_cpu(lum->lmm_magic));
1799 if (magic != LOV_USER_MAGIC_COMP_V1)
1800 RETURN(lod_verify_v1v3(d, buf, is_from_disk));
1802 /* magic == LOV_USER_MAGIC_COMP_V1 */
1803 comp_v1 = buf->lb_buf;
1804 if (buf->lb_len < le32_to_cpu(comp_v1->lcm_size)) {
1805 CDEBUG(D_LAYOUT, "buf len %zu is less than %u\n",
1806 buf->lb_len, le32_to_cpu(comp_v1->lcm_size));
1812 if (le16_to_cpu(comp_v1->lcm_entry_count) == 0) {
1813 CDEBUG(D_LAYOUT, "entry count is zero\n");
1817 if (S_ISREG(lod2lu_obj(lo)->lo_header->loh_attr) &&
1818 lo->ldo_comp_cnt > 0) {
1819 /* could be called from lustre.lov.add */
1820 __u32 cnt = lo->ldo_comp_cnt;
1822 ext = &lo->ldo_comp_entries[cnt - 1].llc_extent;
1823 prev_end = ext->e_end;
1828 for_each_comp_entry_v1(comp_v1, ent) {
1829 ext = &ent->lcme_extent;
1831 if (le64_to_cpu(ext->e_start) > le64_to_cpu(ext->e_end)) {
1832 CDEBUG(D_LAYOUT, "invalid extent "DEXT"\n",
1833 le64_to_cpu(ext->e_start),
1834 le64_to_cpu(ext->e_end));
1839 /* lcme_id contains valid value */
1840 if (le32_to_cpu(ent->lcme_id) == 0 ||
1841 le32_to_cpu(ent->lcme_id) > LCME_ID_MAX) {
1842 CDEBUG(D_LAYOUT, "invalid id %u\n",
1843 le32_to_cpu(ent->lcme_id));
1847 if (le16_to_cpu(comp_v1->lcm_mirror_count) > 0) {
1848 mirror_id = mirror_id_of(
1849 le32_to_cpu(ent->lcme_id));
1851 /* first component must start with 0 */
1852 if (mirror_id != prev_mid &&
1853 le64_to_cpu(ext->e_start) != 0) {
1855 "invalid start:%llu, expect:0\n",
1856 le64_to_cpu(ext->e_start));
1860 prev_mid = mirror_id;
1864 if (le64_to_cpu(ext->e_start) == 0) {
1869 /* the next must be adjacent with the previous one */
1870 if (le64_to_cpu(ext->e_start) != prev_end) {
1872 "invalid start actual:%llu, expect:%llu\n",
1873 le64_to_cpu(ext->e_start), prev_end);
1877 tmp.lb_buf = (char *)comp_v1 + le32_to_cpu(ent->lcme_offset);
1878 tmp.lb_len = le32_to_cpu(ent->lcme_size);
1880 /* Check DoM entry is always the first one */
1882 if (lov_pattern(le32_to_cpu(lum->lmm_pattern)) ==
1884 /* DoM component must be the first in a mirror */
1885 if (le64_to_cpu(ext->e_start) > 0) {
1886 CDEBUG(D_LAYOUT, "invalid DoM component "
1887 "with %llu extent start\n",
1888 le64_to_cpu(ext->e_start));
1891 stripe_size = le32_to_cpu(lum->lmm_stripe_size);
1892 /* There is just one stripe on MDT and it must
1893 * cover whole component size. */
1894 if (stripe_size != le64_to_cpu(ext->e_end)) {
1895 CDEBUG(D_LAYOUT, "invalid DoM layout "
1896 "stripe size %u != %llu "
1897 "(component size)\n",
1898 stripe_size, prev_end);
1901 /* Check stripe size againts per-MDT limit */
1902 if (stripe_size > d->lod_dom_max_stripesize) {
1903 CDEBUG(D_LAYOUT, "DoM component size "
1904 "%u is bigger than MDT limit %u, check "
1905 "dom_max_stripesize parameter\n",
1906 stripe_size, d->lod_dom_max_stripesize);
1907 rc = lod_fix_dom_stripe(d, comp_v1, ent);
1908 if (rc == -ERESTART) {
1909 /* DoM entry was removed, re-check
1910 * new layout from start */
1918 prev_end = le64_to_cpu(ext->e_end);
1920 rc = lod_verify_v1v3(d, &tmp, is_from_disk);
1924 if (prev_end == LUSTRE_EOF)
1927 /* extent end must be aligned with the stripe_size */
1928 stripe_size = le32_to_cpu(lum->lmm_stripe_size);
1929 if (stripe_size == 0)
1930 stripe_size = desc->ld_default_stripe_size;
1931 if (prev_end % stripe_size) {
1932 CDEBUG(D_LAYOUT, "stripe size isn't aligned, "
1933 "stripe_sz: %u, [%llu, %llu)\n",
1934 stripe_size, ext->e_start, prev_end);
1939 /* make sure that the mirror_count is telling the truth */
1940 if (mirror_count != le16_to_cpu(comp_v1->lcm_mirror_count) + 1)
1947 * set the default stripe size, if unset.
1949 * \param[in,out] val number of bytes per OST stripe
1951 * The minimum stripe size is 64KB to ensure that a single stripe is an
1952 * even multiple of a client PAGE_SIZE (IA64, PPC, etc). Otherwise, it
1953 * is difficult to split dirty pages across OSCs during writes.
1955 void lod_fix_desc_stripe_size(__u64 *val)
1957 if (*val < LOV_MIN_STRIPE_SIZE) {
1959 LCONSOLE_INFO("Increasing default stripe size to "
1960 "minimum value %u\n",
1961 LOV_DESC_STRIPE_SIZE_DEFAULT);
1962 *val = LOV_DESC_STRIPE_SIZE_DEFAULT;
1963 } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) {
1964 *val &= ~(LOV_MIN_STRIPE_SIZE - 1);
1965 LCONSOLE_WARN("Changing default stripe size to %llu (a "
1966 "multiple of %u)\n",
1967 *val, LOV_MIN_STRIPE_SIZE);
1972 * set the filesystem default number of stripes, if unset.
1974 * \param[in,out] val number of stripes
1976 * A value of "0" means "use the system-wide default stripe count", which
1977 * has either been inherited by now, or falls back to 1 stripe per file.
1978 * A value of "-1" (0xffffffff) means "stripe over all available OSTs",
1979 * and is a valid value, so is left unchanged here.
1981 void lod_fix_desc_stripe_count(__u32 *val)
1988 * set the filesystem default layout pattern
1990 * \param[in,out] val LOV_PATTERN_* layout
1992 * A value of "0" means "use the system-wide default layout type", which
1993 * has either been inherited by now, or falls back to plain RAID0 striping.
1995 void lod_fix_desc_pattern(__u32 *val)
1997 /* from lov_setstripe */
1998 if ((*val != 0) && !lov_pattern_supported_normal_comp(*val)) {
1999 LCONSOLE_WARN("lod: Unknown stripe pattern: %#x\n", *val);
2004 void lod_fix_lmv_desc_pattern(__u32 *val)
2006 if ((*val) && !lmv_is_known_hash_type(*val)) {
2007 LCONSOLE_WARN("lod: Unknown md stripe pattern: %#x\n", *val);
2012 void lod_fix_desc_qos_maxage(__u32 *val)
2014 /* fix qos_maxage */
2016 *val = LOV_DESC_QOS_MAXAGE_DEFAULT;
2020 * Used to fix insane default striping.
2022 * \param[in] desc striping description
2024 void lod_fix_desc(struct lov_desc *desc)
2026 lod_fix_desc_stripe_size(&desc->ld_default_stripe_size);
2027 lod_fix_desc_stripe_count(&desc->ld_default_stripe_count);
2028 lod_fix_desc_pattern(&desc->ld_pattern);
2029 lod_fix_desc_qos_maxage(&desc->ld_qos_maxage);
2032 static void lod_fix_lmv_desc(struct lmv_desc *desc)
2034 desc->ld_active_tgt_count = 0;
2035 lod_fix_desc_stripe_count(&desc->ld_default_stripe_count);
2036 lod_fix_lmv_desc_pattern(&desc->ld_pattern);
2037 lod_fix_desc_qos_maxage(&desc->ld_qos_maxage);
2041 * Initialize the structures used to store pools and default striping.
2043 * \param[in] lod LOD device
2044 * \param[in] lcfg configuration structure storing default striping.
2046 * \retval 0 if initialization succeeds
2047 * \retval negative error number on failure
2049 int lod_pools_init(struct lod_device *lod, struct lustre_cfg *lcfg)
2051 struct obd_device *obd;
2052 struct lov_desc *desc;
2056 obd = class_name2obd(lustre_cfg_string(lcfg, 0));
2057 LASSERT(obd != NULL);
2058 obd->obd_lu_dev = &lod->lod_dt_dev.dd_lu_dev;
2060 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
2061 CERROR("LOD setup requires a descriptor\n");
2065 desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1);
2067 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
2068 CERROR("descriptor size wrong: %d > %d\n",
2069 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
2073 if (desc->ld_magic != LOV_DESC_MAGIC) {
2074 if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) {
2075 CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n",
2076 obd->obd_name, desc);
2077 lustre_swab_lov_desc(desc);
2079 CERROR("%s: Bad lov desc magic: %#x\n",
2080 obd->obd_name, desc->ld_magic);
2087 desc->ld_active_tgt_count = 0;
2088 lod->lod_ost_descs.ltd_lov_desc = *desc;
2090 /* NB: config doesn't contain lmv_desc, alter it via sysfs. */
2091 lod_fix_lmv_desc(&lod->lod_mdt_descs.ltd_lmv_desc);
2093 lod->lod_sp_me = LUSTRE_SP_CLI;
2095 /* Set up OST pool environment */
2096 lod->lod_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS,
2097 HASH_POOLS_MAX_BITS,
2098 HASH_POOLS_BKT_BITS, 0,
2101 &pool_hash_operations,
2103 if (lod->lod_pools_hash_body == NULL)
2106 INIT_LIST_HEAD(&lod->lod_pool_list);
2107 lod->lod_pool_count = 0;
2108 rc = lod_tgt_pool_init(&lod->lod_mdt_descs.ltd_tgt_pool, 0);
2112 rc = lod_tgt_pool_init(&lod->lod_mdt_descs.ltd_qos.lq_rr.lqr_pool, 0);
2114 GOTO(out_mdt_pool, rc);
2116 rc = lod_tgt_pool_init(&lod->lod_ost_descs.ltd_tgt_pool, 0);
2118 GOTO(out_mdt_rr_pool, rc);
2120 rc = lod_tgt_pool_init(&lod->lod_ost_descs.ltd_qos.lq_rr.lqr_pool, 0);
2122 GOTO(out_ost_pool, rc);
2127 lod_tgt_pool_free(&lod->lod_ost_descs.ltd_tgt_pool);
2129 lod_tgt_pool_free(&lod->lod_mdt_descs.ltd_qos.lq_rr.lqr_pool);
2131 lod_tgt_pool_free(&lod->lod_mdt_descs.ltd_tgt_pool);
2133 cfs_hash_putref(lod->lod_pools_hash_body);
2139 * Release the structures describing the pools.
2141 * \param[in] lod LOD device from which we release the structures
2145 int lod_pools_fini(struct lod_device *lod)
2147 struct obd_device *obd = lod2obd(lod);
2148 struct pool_desc *pool, *tmp;
2151 list_for_each_entry_safe(pool, tmp, &lod->lod_pool_list, pool_list) {
2152 /* free pool structs */
2153 CDEBUG(D_INFO, "delete pool %p\n", pool);
2154 /* In the function below, .hs_keycmp resolves to
2155 * pool_hashkey_keycmp() */
2156 /* coverity[overrun-buffer-val] */
2157 lod_pool_del(obd, pool->pool_name);
2160 cfs_hash_putref(lod->lod_pools_hash_body);
2161 lod_tgt_pool_free(&lod->lod_ost_descs.ltd_qos.lq_rr.lqr_pool);
2162 lod_tgt_pool_free(&lod->lod_ost_descs.ltd_tgt_pool);
2163 lod_tgt_pool_free(&lod->lod_mdt_descs.ltd_qos.lq_rr.lqr_pool);
2164 lod_tgt_pool_free(&lod->lod_mdt_descs.ltd_tgt_pool);