4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License version 2 for more details. A copy is
14 * included in the COPYING file that accompanied this code.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/lod/lod_internal.h
34 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
35 * Author: Mikhail Pershin <mike.pershin@intel.com>
38 #ifndef _LOD_INTERNAL_H
39 #define _LOD_INTERNAL_H
41 #include <libcfs/libcfs.h>
42 #include <uapi/linux/lustre/lustre_cfg.h>
44 #include <dt_object.h>
46 #define LOV_USES_ASSIGNED_STRIPE 0
47 #define LOV_USES_DEFAULT_STRIPE 1
49 /* Special values to remove LOV EA from disk */
50 #define LOVEA_DELETE_VALUES(size, count, offset, pool) \
51 ((size) == 0 && (count) == 0 && \
52 (offset) == (typeof(offset))(-1) && (pool) == NULL)
54 #define LMVEA_DELETE_VALUES(count, offset) \
55 ((count) == 0 && (offset) == (typeof(offset))(-1))
58 char pool_name[LOV_MAXPOOLNAME + 1];
59 struct ost_pool pool_obds; /* pool members */
60 atomic_t pool_refcount;
61 struct lu_qos_rr pool_rr;
62 struct hlist_node pool_hash; /* access by poolname */
63 struct list_head pool_list;
64 struct proc_dir_entry *pool_proc_entry;
65 struct obd_device *pool_lobd; /* owner */
68 #define pool_tgt_count(p) ((p)->pool_obds.op_count)
69 #define pool_tgt_array(p) ((p)->pool_obds.op_array)
70 #define pool_tgt_rw_sem(p) ((p)->pool_obds.op_rw_sem)
72 #define lod_tgt_desc lu_tgt_desc
74 #define TGT_PTRS 256 /* number of pointers at 1st level */
75 #define TGT_PTRS_PER_BLOCK 256 /* number of pointers at 2nd level */
77 struct lod_tgt_desc_idx {
78 struct lod_tgt_desc *ldi_tgt[TGT_PTRS_PER_BLOCK];
81 #define LTD_TGT(ltd, index) \
82 ((ltd)->ltd_tgt_idx[(index) / \
83 TGT_PTRS_PER_BLOCK]->ldi_tgt[(index) % TGT_PTRS_PER_BLOCK])
85 #define OST_TGT(lod, index) LTD_TGT(&lod->lod_ost_descs, index)
86 #define MDT_TGT(lod, index) LTD_TGT(&lod->lod_mdt_descs, index)
87 struct lod_tgt_descs {
88 /* list of known TGTs */
89 struct lod_tgt_desc_idx *ltd_tgt_idx[TGT_PTRS];
90 /* Size of the lod_tgts array, granted to be a power of 2 */
92 /* number of registered TGTs */
94 /* bitmap of TGTs available */
95 struct cfs_bitmap *ltd_tgt_bitmap;
96 /* TGTs scheduled to be deleted */
98 /* Table refcount used for delayed deletion */
100 /* mutex to serialize concurrent updates to the tgt table */
101 struct mutex ltd_mutex;
102 /* read/write semaphore used for array relocation */
103 struct rw_semaphore ltd_rw_sem;
106 struct lod_avoid_guide {
107 /* ids of OSSs avoid guidance */
108 __u32 *lag_oss_avoid_array;
109 /* number of filled array items */
110 unsigned int lag_oaa_count;
111 /* number of allocated array items */
112 unsigned int lag_oaa_size;
113 /* bitmap of OSTs avoid guidance */
114 struct cfs_bitmap *lag_ost_avoid_bitmap;
115 /* how many OSTs are available for alloc */
120 struct dt_device lod_dt_dev;
121 struct obd_export *lod_child_exp;
122 struct dt_device *lod_child;
123 struct lprocfs_stats *lod_stats;
124 spinlock_t lod_connects_lock;
126 unsigned int lod_recovery_completed:1,
129 lod_child_got_update_log:1;
131 /* lov settings descriptor storing static information */
132 struct lov_desc lod_desc;
134 /* protect ld_active_tgt_count, ltd_active and lod_md_root */
137 /* Description of OST */
138 struct lod_tgt_descs lod_ost_descs;
139 /* Description of MDT */
140 struct lod_tgt_descs lod_mdt_descs;
142 /* Recovery thread for lod_child */
143 struct ptlrpc_thread lod_child_recovery_thread;
145 /* maximum EA size underlied OSD may have */
146 unsigned int lod_osd_max_easize;
147 /* maximum size of MDT stripe for Data-on-MDT files. */
148 unsigned int lod_dom_max_stripesize;
150 /*FIXME: When QOS and pool is implemented for MDT, probably these
151 * structure should be moved to lod_tgt_descs as well.
153 /* QoS info per LOD */
154 struct lu_qos lod_qos; /* qos info per lod */
157 struct ost_pool lod_pool_info; /* all OSTs in a packed array */
159 struct cfs_hash *lod_pools_hash_body; /* used for key access */
160 struct list_head lod_pool_list; /* used for sequential access */
161 struct proc_dir_entry *lod_pool_proc_entry;
163 enum lustre_sec_part lod_sp_me;
165 struct proc_dir_entry *lod_symlink;
166 struct dentry *lod_debugfs;
168 /* ROOT object, used to fetch FS default striping */
169 struct lod_object *lod_md_root;
172 #define lod_osts lod_ost_descs.ltd_tgts
173 #define lod_ost_bitmap lod_ost_descs.ltd_tgt_bitmap
174 #define lod_ostnr lod_ost_descs.ltd_tgtnr
175 #define lod_osts_size lod_ost_descs.ltd_tgts_size
176 #define ltd_ost ltd_tgt
177 #define lod_ost_desc lu_tgt_desc
179 #define lod_mdts lod_mdt_descs.ltd_tgts
180 #define lod_mdt_bitmap lod_mdt_descs.ltd_tgt_bitmap
181 #define lod_remote_mdt_count lod_mdt_descs.ltd_tgtnr
182 #define lod_mdts_size lod_mdt_descs.ltd_tgts_size
183 #define ltd_mdt ltd_tgt
184 #define lod_mdt_desc lu_tgt_desc
186 struct lod_layout_component {
187 struct lu_extent llc_extent;
190 __u32 llc_stripe_size;
192 __u16 llc_layout_gen;
193 __u16 llc_stripe_offset;
194 __u16 llc_stripe_count;
195 __u16 llc_stripes_allocated;
196 __u64 llc_timestamp; /* snapshot time */
198 /* ost list specified with LOV_USER_MAGIC_SPECIFIC lum */
199 struct ost_pool llc_ostlist;
200 struct dt_object **llc_stripe;
201 __u32 *llc_ost_indices;
204 struct lod_default_striping {
206 /* current layout component count */
207 __u16 lds_def_comp_cnt;
208 __u16 lds_def_mirror_cnt;
209 /* the largest comp count ever used */
210 __u32 lds_def_comp_size_cnt;
211 struct lod_layout_component *lds_def_comp_entries;
213 __u32 lds_dir_def_stripe_count;
214 __u32 lds_dir_def_stripe_offset;
215 __u32 lds_dir_def_hash_type;
216 /* default file striping flags (LOV) */
217 __u32 lds_def_striping_set:1,
218 lds_def_striping_is_composite:1,
219 /* default dir striping flags (LMV) */
220 lds_dir_def_striping_set:1;
223 struct lod_mirror_entry {
228 /* start,end index of this mirror in ldo_comp_entries */
234 /* common fields for both files and directories */
235 struct dt_object ldo_obj;
236 struct mutex ldo_layout_mutex;
238 /* file stripe (LOV) */
240 __u32 ldo_layout_gen;
241 /* Layout component count for a regular file.
242 * It equals to 1 for non-composite layout. */
244 /* Layout mirror count for a PFLR file.
245 * It's 0 for files with non-composite layout. */
246 __u16 ldo_mirror_count;
247 struct lod_mirror_entry *ldo_mirrors;
248 __u32 ldo_is_composite:1,
253 /* directory stripe (LMV) */
255 /* Slave stripe count for striped directory. */
256 __u16 ldo_dir_stripe_count;
257 /* How many stripes allocated for a striped directory */
258 __u16 ldo_dir_stripes_allocated;
259 __u32 ldo_dir_stripe_offset;
260 __u32 ldo_dir_hash_type;
261 __u32 ldo_dir_migrate_offset;
262 __u32 ldo_dir_migrate_hash;
263 /* Is a slave stripe of striped directory? */
264 __u32 ldo_dir_slave_stripe:1,
266 /* the stripe has been loaded */
267 ldo_dir_stripe_loaded:1,
268 /* foreign directory */
271 * This default LMV is parent default LMV, which will be
272 * used in child creation, and it's not cached, so this
273 * field is invalid after create, make sure it's used by
274 * lod_dir_striping_create_internal() only.
276 struct lod_default_striping *ldo_def_striping;
281 /* foreign/raw format LOV */
282 char *ldo_foreign_lov;
283 size_t ldo_foreign_lov_size;
286 /* foreign/raw format LMV */
287 char *ldo_foreign_lmv;
288 size_t ldo_foreign_lmv_size;
291 /* file stripe (LOV) */
292 struct lod_layout_component *ldo_comp_entries;
293 /* slave stripes of striped directory (LMV) */
294 struct dt_object **ldo_stripe;
299 #define lod_foreach_mirror_comp(comp, lo, mirror_idx) \
300 for (comp = &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_start]; \
301 comp <= &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_end]; \
304 static inline bool lod_is_flr(const struct lod_object *lo)
306 if (!lo->ldo_is_composite)
309 return (lo->ldo_flr_state & LCM_FL_FLR_MASK) != LCM_FL_NONE;
312 static inline int lod_set_pool(char **pool, const char *new_pool)
316 if (*pool == new_pool)
320 len = strlen(*pool) + 1;
321 OBD_FREE(*pool, len);
324 if (new_pool != NULL) {
325 len = strlen(new_pool) + 1;
326 OBD_ALLOC(*pool, len);
329 strlcpy(*pool, new_pool, len);
334 static inline int lod_set_def_pool(struct lod_default_striping *lds,
335 int i, const char *new_pool)
337 return lod_set_pool(&lds->lds_def_comp_entries[i].llc_pool, new_pool);
340 static inline int lod_obj_set_pool(struct lod_object *lo, int i,
341 const char *new_pool)
343 return lod_set_pool(&lo->ldo_comp_entries[i].llc_pool, new_pool);
347 * Create new layout generation.
349 * The only requirement for layout generation is that it changes when
350 * the layout is modified, so a circular counter is sufficient for the
351 * low rate of layout modifications.
353 * Layout generation is also used to generate unique component ID.
354 * To detect generation overflow, we preserve the highest bit of the
355 * generation when it wrapped.
357 static inline void lod_obj_inc_layout_gen(struct lod_object *lo)
359 __u32 preserve = lo->ldo_layout_gen & ~LCME_ID_MASK;
360 lo->ldo_layout_gen++;
361 lo->ldo_layout_gen |= preserve;
362 /* Zero is not a valid generation */
363 if (unlikely((lo->ldo_layout_gen & LCME_ID_MASK) == 0))
364 lo->ldo_layout_gen++;
368 struct dt_object *lit_obj; /* object from the layer below */
369 /* stripe offset of iteration */
370 __u32 lit_stripe_index;
372 struct dt_it *lit_it; /* iterator from the layer below */
375 struct lod_thread_info {
376 /* per-thread buffer for LOV EA, may be vmalloc'd */
378 __u32 lti_ea_store_size;
379 /* per-thread buffer for LMV EA */
380 struct lu_buf lti_buf;
381 struct ost_id lti_ostid;
382 struct lu_fid lti_fid;
383 struct obd_statfs lti_osfs;
384 struct lu_attr lti_attr;
385 struct lod_it lti_it;
386 struct ldlm_res_id lti_res_id;
387 /* used to hold lu_dirent, sizeof(struct lu_dirent) + NAME_MAX */
388 char lti_key[sizeof(struct lu_dirent) +
390 struct dt_object_format lti_format;
391 struct lu_name lti_name;
392 struct lu_buf lti_linkea_buf;
393 struct dt_insert_rec lti_dt_rec;
394 struct llog_catid lti_cid;
395 struct llog_cookie lti_cookie;
396 struct lustre_cfg lti_lustre_cfg;
397 /* used to store parent default striping in create */
398 struct lod_default_striping lti_def_striping;
399 struct filter_fid lti_ff;
401 size_t lti_comp_size;
403 struct lu_attr lti_layout_attr;
404 /* object allocation avoid guide info */
405 struct lod_avoid_guide lti_avoid;
408 extern const struct lu_device_operations lod_lu_ops;
410 static inline int lu_device_is_lod(struct lu_device *d)
412 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &lod_lu_ops);
415 static inline struct lod_device* lu2lod_dev(struct lu_device *d)
417 LASSERT(lu_device_is_lod(d));
418 return container_of0(d, struct lod_device, lod_dt_dev.dd_lu_dev);
421 static inline struct lu_device *lod2lu_dev(struct lod_device *d)
423 return &d->lod_dt_dev.dd_lu_dev;
426 static inline struct obd_device *lod2obd(struct lod_device *d)
428 return d->lod_dt_dev.dd_lu_dev.ld_obd;
431 static inline struct lod_device *dt2lod_dev(struct dt_device *d)
433 LASSERT(lu_device_is_lod(&d->dd_lu_dev));
434 return container_of0(d, struct lod_device, lod_dt_dev);
437 static inline struct lod_object *lu2lod_obj(struct lu_object *o)
439 LASSERT(ergo(o != NULL, lu_device_is_lod(o->lo_dev)));
440 return container_of0(o, struct lod_object, ldo_obj.do_lu);
443 static inline struct lu_object *lod2lu_obj(struct lod_object *obj)
445 return &obj->ldo_obj.do_lu;
448 static inline const struct lu_fid *lod_object_fid(struct lod_object *obj)
450 return lu_object_fid(lod2lu_obj(obj));
453 static inline struct lod_object *lod_obj(const struct lu_object *o)
455 LASSERT(lu_device_is_lod(o->lo_dev));
456 return container_of0(o, struct lod_object, ldo_obj.do_lu);
459 static inline struct lod_object *lod_dt_obj(const struct dt_object *d)
461 return lod_obj(&d->do_lu);
464 static inline struct dt_object* lod_object_child(struct lod_object *o)
466 return container_of0(lu_object_next(lod2lu_obj(o)),
467 struct dt_object, do_lu);
470 static inline bool lod_obj_is_striped(struct dt_object *dt)
472 struct lod_object *lo = lod_dt_obj(dt);
475 if (!dt_object_exists(dt_object_child(dt)))
478 if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
479 return lo->ldo_dir_stripe_count != 0;
481 if (lo->ldo_is_foreign)
484 for (i = 0; i < lo->ldo_comp_cnt; i++) {
485 if (lo->ldo_comp_entries[i].llc_stripe == NULL)
487 LASSERT(lo->ldo_comp_entries[i].llc_stripe_count > 0);
493 extern struct lu_context_key lod_thread_key;
495 static inline struct lod_thread_info *lod_env_info(const struct lu_env *env)
497 struct lod_thread_info *info;
498 info = lu_context_key_get(&env->le_ctx, &lod_thread_key);
503 static inline struct lu_name *
504 lod_name_get(const struct lu_env *env, const void *area, int len)
506 struct lu_name *lname;
508 lname = &lod_env_info(env)->lti_name;
509 lname->ln_name = area;
510 lname->ln_namelen = len;
514 static inline struct lod_default_striping *
515 lod_lds_buf_get(const struct lu_env *env)
517 struct lod_thread_info *info = lod_env_info(env);
519 info->lti_def_striping.lds_def_striping_set = 0;
520 info->lti_def_striping.lds_dir_def_striping_set = 0;
521 return &info->lti_def_striping;
524 static inline void lod_layout_get_pool(struct lod_layout_component *entries,
525 int count, char *pool, int len)
529 for (i = 0; i < count; i++) {
530 if (entries[i].llc_pool != NULL) {
531 strlcpy(pool, entries[i].llc_pool, len);
537 #define lod_foreach_ost(__dev, index) \
538 if ((__dev)->lod_osts_size > 0) \
539 cfs_foreach_bit((__dev)->lod_ost_bitmap, (index))
541 #define lod_foreach_mdt(mdt_dev, index) \
542 cfs_foreach_bit((mdt_dev)->lod_mdt_bitmap, (index))
545 extern struct kmem_cache *lod_object_kmem;
546 int lod_fld_lookup(const struct lu_env *env, struct lod_device *lod,
547 const struct lu_fid *fid, __u32 *tgt, int *flags);
548 int lod_sub_init_llog(const struct lu_env *env, struct lod_device *lod,
549 struct dt_device *dt);
550 void lod_sub_fini_llog(const struct lu_env *env,
551 struct dt_device *dt, struct ptlrpc_thread *thread);
552 int lodname2mdt_index(char *lodname, __u32 *mdt_index);
553 extern void target_recovery_fini(struct obd_device *obd);
556 void lod_getref(struct lod_tgt_descs *ltd);
557 void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd);
558 int lod_add_device(const struct lu_env *env, struct lod_device *lod,
559 char *osp, unsigned index, unsigned gen, int mdt_index,
560 char *type, int active);
561 int lod_del_device(const struct lu_env *env, struct lod_device *lod,
562 struct lod_tgt_descs *ltd, char *osp, unsigned idx,
563 unsigned gen, bool for_ost);
564 int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
565 struct lod_tgt_descs *ltd, bool for_ost);
566 int lod_striping_load(const struct lu_env *env, struct lod_object *lo);
567 int lod_striping_reload(const struct lu_env *env, struct lod_object *lo,
568 const struct lu_buf *buf);
570 int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
573 lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
575 return lod_get_ea(env, lo, XATTR_NAME_LOV);
579 lod_get_lmv_ea(const struct lu_env *env, struct lod_object *lo)
581 return lod_get_ea(env, lo, XATTR_NAME_LMV);
585 lod_get_default_lmv_ea(const struct lu_env *env, struct lod_object *lo)
587 return lod_get_ea(env, lo, XATTR_NAME_DEFAULT_LMV);
591 lod_comp_set_init(struct lod_layout_component *entry)
593 entry->llc_flags |= LCME_FL_INIT;
597 lod_comp_unset_init(struct lod_layout_component *entry)
599 entry->llc_flags &= ~LCME_FL_INIT;
603 lod_comp_inited(const struct lod_layout_component *entry)
605 return entry->llc_flags & LCME_FL_INIT;
609 * For a PFL file, some of its component could be un-instantiated, so
610 * that their lov_ost_data_v1 array is not needed, we'd use this function
611 * to reduce the LOVEA buffer size.
613 * Note: if llc_ostlist contains value, we'd need lov_ost_data_v1 array to
614 * save the specified OST index list.
617 lod_comp_shrink_stripe_count(struct lod_layout_component *lod_comp,
621 * Need one lov_ost_data_v1 to store invalid ost_idx, please refer to
622 * lod_parse_striping()
624 if (!lod_comp_inited(lod_comp) && lod_comp->llc_ostlist.op_count == 0)
628 void lod_fix_desc(struct lov_desc *desc);
629 void lod_fix_desc_qos_maxage(__u32 *val);
630 void lod_fix_desc_pattern(__u32 *val);
631 void lod_fix_desc_stripe_count(__u32 *val);
632 void lod_fix_desc_stripe_size(__u64 *val);
633 int lod_pools_init(struct lod_device *m, struct lustre_cfg *cfg);
634 int lod_pools_fini(struct lod_device *m);
635 int lod_parse_striping(const struct lu_env *env, struct lod_object *mo,
636 const struct lu_buf *buf);
637 int lod_parse_dir_striping(const struct lu_env *env, struct lod_object *lo,
638 const struct lu_buf *buf);
639 int lod_initialize_objects(const struct lu_env *env, struct lod_object *mo,
640 struct lov_ost_data_v1 *objs, int index);
641 int lod_verify_striping(struct lod_device *d, struct lod_object *lo,
642 const struct lu_buf *buf, bool is_from_disk);
643 int lod_generate_lovea(const struct lu_env *env, struct lod_object *lo,
644 struct lov_mds_md *lmm, int *lmm_size, bool is_dir);
645 int lod_ea_store_resize(struct lod_thread_info *info, size_t size);
646 int lod_def_striping_comp_resize(struct lod_default_striping *lds, __u16 count);
647 void lod_free_def_comp_entries(struct lod_default_striping *lds);
648 void lod_free_comp_entries(struct lod_object *lo);
649 int lod_alloc_comp_entries(struct lod_object *lo, int mirror_cnt, int comp_cnt);
650 int lod_fill_mirrors(struct lod_object *lo);
653 int lod_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
654 int lod_ost_pool_remove(struct ost_pool *op, __u32 idx);
655 int lod_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
656 struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname);
657 void lod_pool_putref(struct pool_desc *pool);
658 int lod_ost_pool_free(struct ost_pool *op);
659 int lod_pool_del(struct obd_device *obd, char *poolname);
660 int lod_ost_pool_init(struct ost_pool *op, unsigned int count);
661 extern struct cfs_hash_ops pool_hash_operations;
662 int lod_check_index_in_pool(__u32 idx, struct pool_desc *pool);
663 int lod_pool_new(struct obd_device *obd, char *poolname);
664 int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname);
665 int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
667 struct lod_obj_stripe_cb_data;
668 typedef int (*lod_obj_stripe_cb_t)(const struct lu_env *env,
669 struct lod_object *lo, struct dt_object *dt,
671 int comp_idx, int stripe_idx,
672 struct lod_obj_stripe_cb_data *data);
673 typedef bool (*lod_obj_comp_skip_cb_t)(const struct lu_env *env,
674 struct lod_object *lo, int comp_idx,
675 struct lod_obj_stripe_cb_data *data);
676 typedef int (*lod_obj_comp_cb_t)(const struct lu_env *env,
677 struct lod_object *lo, int comp_idx,
678 struct lod_obj_stripe_cb_data *data);
679 struct lod_obj_stripe_cb_data {
681 const struct lu_attr *locd_attr;
683 const struct lu_buf *locd_buf;
685 lod_obj_stripe_cb_t locd_stripe_cb;
686 lod_obj_comp_skip_cb_t locd_comp_skip_cb;
687 lod_obj_comp_cb_t locd_comp_cb;
692 int lod_prepare_create(const struct lu_env *env, struct lod_object *lo,
693 struct lu_attr *attr, const struct lu_buf *buf,
695 void lod_qos_rr_init(struct lu_qos_rr *lqr);
696 int lod_use_defined_striping(const struct lu_env *, struct lod_object *,
697 const struct lu_buf *);
698 int lod_qos_parse_config(const struct lu_env *env, struct lod_object *lo,
699 const struct lu_buf *buf);
700 int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
701 struct lu_attr *attr, struct thandle *th,
703 __u16 lod_comp_entry_stripe_count(struct lod_object *lo,
704 struct lod_layout_component *entry,
706 __u16 lod_get_stripe_count(struct lod_device *lod, struct lod_object *lo,
707 __u16 stripe_count, bool overstriping);
708 void lod_qos_statfs_update(const struct lu_env *env, struct lod_device *lod);
711 int lod_procfs_init(struct lod_device *lod);
712 void lod_procfs_fini(struct lod_device *lod);
715 extern struct dt_object_operations lod_obj_ops;
716 extern struct lu_object_operations lod_lu_obj_ops;
718 int lod_load_lmv_shards(const struct lu_env *env, struct lod_object *lo,
719 struct lu_buf *buf, bool resize);
720 int lod_declare_striped_create(const struct lu_env *env, struct dt_object *dt,
721 struct lu_attr *attr,
722 const struct lu_buf *lovea, struct thandle *th);
723 int lod_striped_create(const struct lu_env *env, struct dt_object *dt,
724 struct lu_attr *attr, struct dt_object_format *dof,
726 int lod_alloc_foreign_lov(struct lod_object *lo, size_t size);
727 void lod_free_foreign_lov(struct lod_object *lo);
728 void lod_striping_free_nolock(const struct lu_env *env, struct lod_object *lo);
729 void lod_striping_free(const struct lu_env *env, struct lod_object *lo);
731 int lod_obj_for_each_stripe(const struct lu_env *env, struct lod_object *lo,
733 struct lod_obj_stripe_cb_data *data);
734 int lod_comp_copy_ost_lists(struct lod_layout_component *lod_comp,
735 struct lov_user_md_v3 *v3);
737 /* lod_sub_object.c */
738 struct thandle *lod_sub_get_thandle(const struct lu_env *env,
740 const struct dt_object *sub_obj,
741 bool *record_update);
742 int lod_sub_declare_create(const struct lu_env *env, struct dt_object *dt,
743 struct lu_attr *attr,
744 struct dt_allocation_hint *hint,
745 struct dt_object_format *dof, struct thandle *th);
746 int lod_sub_create(const struct lu_env *env, struct dt_object *dt,
747 struct lu_attr *attr, struct dt_allocation_hint *hint,
748 struct dt_object_format *dof, struct thandle *th);
749 int lod_sub_declare_ref_add(const struct lu_env *env, struct dt_object *dt,
751 int lod_sub_ref_add(const struct lu_env *env, struct dt_object *dt,
753 int lod_sub_declare_ref_del(const struct lu_env *env, struct dt_object *dt,
755 int lod_sub_ref_del(const struct lu_env *env, struct dt_object *dt,
757 int lod_sub_declare_destroy(const struct lu_env *env, struct dt_object *dt,
759 int lod_sub_destroy(const struct lu_env *env, struct dt_object *dt,
761 int lod_sub_declare_insert(const struct lu_env *env, struct dt_object *dt,
762 const struct dt_rec *rec, const struct dt_key *key,
764 int lod_sub_insert(const struct lu_env *env, struct dt_object *dt,
765 const struct dt_rec *rec, const struct dt_key *key,
767 int lod_sub_declare_delete(const struct lu_env *env, struct dt_object *dt,
768 const struct dt_key *key, struct thandle *th);
769 int lod_sub_delete(const struct lu_env *env, struct dt_object *dt,
770 const struct dt_key *name, struct thandle *th);
771 int lod_sub_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
772 const struct lu_buf *buf, const char *name,
773 int fl, struct thandle *th);
774 int lod_sub_xattr_set(const struct lu_env *env, struct dt_object *dt,
775 const struct lu_buf *buf, const char *name, int fl,
777 int lod_sub_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
778 const struct lu_attr *attr, struct thandle *th);
779 int lod_sub_attr_set(const struct lu_env *env, struct dt_object *dt,
780 const struct lu_attr *attr, struct thandle *th);
781 int lod_sub_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
782 const char *name, struct thandle *th);
783 int lod_sub_xattr_del(const struct lu_env *env, struct dt_object *dt,
784 const char *name, struct thandle *th);
785 int lod_sub_declare_write(const struct lu_env *env, struct dt_object *dt,
786 const struct lu_buf *buf, loff_t pos,
788 ssize_t lod_sub_write(const struct lu_env *env, struct dt_object *dt,
789 const struct lu_buf *buf, loff_t *pos,
791 int lod_sub_declare_punch(const struct lu_env *env, struct dt_object *dt,
792 __u64 start, __u64 end, struct thandle *th);
793 int lod_sub_punch(const struct lu_env *env, struct dt_object *dt,
794 __u64 start, __u64 end, struct thandle *th);
796 int lod_sub_prep_llog(const struct lu_env *env, struct lod_device *lod,
797 struct dt_device *dt, int index);