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/
31 * lustre/lod/lod_internal.h
33 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
34 * Author: Mikhail Pershin <mike.pershin@intel.com>
37 #ifndef _LOD_INTERNAL_H
38 #define _LOD_INTERNAL_H
40 #include <libcfs/libcfs.h>
41 #include <uapi/linux/lustre/lustre_cfg.h>
43 #include <dt_object.h>
45 #define LOV_USES_ASSIGNED_STRIPE 0
46 #define LOV_USES_DEFAULT_STRIPE 1
48 /* Special values to remove LOV EA from disk */
49 #define LOVEA_DELETE_VALUES(size, count, offset, pool) \
50 ((size) == 0 && (count) == 0 && \
51 (offset) == (typeof(offset))(-1) && (pool) == NULL)
53 #define LMVEA_DELETE_VALUES(count, offset) \
54 ((count) == 0 && (offset) == (typeof(offset))(-1))
57 char pool_name[LOV_MAXPOOLNAME + 1];
58 struct lu_tgt_pool pool_obds; /* pool members */
59 atomic_t pool_refcount;
60 struct lu_qos_rr pool_rr;
61 struct rhash_head pool_hash; /* access by poolname */
62 struct list_head pool_list;
63 struct rcu_head pool_rcu;
64 struct proc_dir_entry *pool_proc_entry;
65 struct obd_device *pool_lobd; /* owner */
68 int lod_pool_hash_init(struct rhashtable *tbl);
69 void lod_pool_hash_destroy(struct rhashtable *tbl);
71 #define pool_tgt_count(p) ((p)->pool_obds.op_count)
72 #define pool_tgt_array(p) ((p)->pool_obds.op_array)
73 #define pool_tgt_rw_sem(p) ((p)->pool_obds.op_rw_sem)
75 #define lod_tgt_desc lu_tgt_desc
76 #define lod_tgt_descs lu_tgt_descs
78 #define OST_TGT(lod, index) LTD_TGT(&lod->lod_ost_descs, index)
79 #define MDT_TGT(lod, index) LTD_TGT(&lod->lod_mdt_descs, index)
81 struct lod_avoid_guide {
82 /* ids of OSSs avoid guidance */
83 __u32 *lag_oss_avoid_array;
84 /* number of filled array items */
85 unsigned int lag_oaa_count;
86 /* number of allocated array items */
87 unsigned int lag_oaa_size;
88 /* bitmap of OSTs avoid guidance */
89 unsigned long *lag_ost_avoid_bitmap;
90 u32 lag_ost_avoid_size;
91 /* how many OSTs are available for alloc */
95 #define LOD_DOM_MIN_SIZE_KB (LOV_MIN_STRIPE_SIZE >> 10)
96 #define LOD_DOM_SFS_MAX_AGE 10
99 struct dt_device lod_dt_dev;
100 struct obd_export *lod_child_exp;
101 struct dt_device *lod_child;
102 struct lprocfs_stats *lod_stats;
103 spinlock_t lod_connects_lock;
105 unsigned int lod_recovery_completed:1,
108 lod_child_got_update_log:1;
110 /* protect ld_active_tgt_count, ltd_active and lod_md_root */
113 /* Description of OST */
114 struct lod_tgt_descs lod_ost_descs;
115 /* Description of MDT */
116 struct lod_tgt_descs lod_mdt_descs;
118 /* Recovery thread for lod_child */
119 struct task_struct *lod_child_recovery_task;
121 /* maximum EA size underlied OSD may have */
122 unsigned int lod_osd_max_easize;
123 /* maximum size of MDT stripe for Data-on-MDT files. */
124 unsigned int lod_dom_stripesize_max_kb;
125 /* current DOM default stripe size adjusted by threshold */
126 unsigned int lod_dom_stripesize_cur_kb;
127 /* Threshold at which DOM default stripe will start decreasing */
128 __u64 lod_dom_threshold_free_mb;
130 /* Local OSD statfs cache */
131 spinlock_t lod_lsfs_lock;
132 time64_t lod_lsfs_age;
133 __u64 lod_lsfs_total_mb;
134 __u64 lod_lsfs_free_mb;
138 struct rhashtable lod_pools_hash_body; /* used for key access */
139 struct list_head lod_pool_list; /* used for sequential access */
140 struct proc_dir_entry *lod_pool_proc_entry;
142 enum lustre_sec_part lod_sp_me;
144 struct proc_dir_entry *lod_symlink;
145 struct dentry *lod_debugfs;
147 /* ROOT object, used to fetch FS default striping */
148 struct lod_object *lod_md_root;
151 #define lod_ost_bitmap lod_ost_descs.ltd_tgt_bitmap
152 #define lod_ost_count lod_ost_descs.ltd_lov_desc.ld_tgt_count
153 #define lod_remote_mdt_count lod_mdt_descs.ltd_lmv_desc.ld_tgt_count
155 struct lod_layout_component {
156 struct lu_extent llc_extent;
159 __u32 llc_stripe_size;
161 __u16 llc_layout_gen;
162 __u16 llc_stripe_offset;
163 __u16 llc_stripe_count;
164 __u16 llc_stripes_allocated;
165 __u64 llc_timestamp; /* snapshot time */
167 /* ost list specified with LOV_USER_MAGIC_SPECIFIC lum */
168 struct lu_tgt_pool llc_ostlist;
169 struct dt_object **llc_stripe;
170 __u32 *llc_ost_indices;
173 struct lod_default_striping {
175 /* current layout component count */
176 __u16 lds_def_comp_cnt;
177 __u16 lds_def_mirror_cnt;
178 /* the largest comp count ever used */
179 __u32 lds_def_comp_size_cnt;
180 struct lod_layout_component *lds_def_comp_entries;
182 __u32 lds_dir_def_stripe_count;
183 __u32 lds_dir_def_stripe_offset;
184 __u32 lds_dir_def_hash_type;
185 __u8 lds_dir_def_max_inherit;
186 __u8 lds_dir_def_max_inherit_rr;
187 /* default file striping flags (LOV) */
188 __u32 lds_def_striping_set:1,
189 lds_def_striping_is_composite:1,
190 /* default dir striping flags (LMV) */
191 lds_dir_def_striping_set:1;
194 static inline __u8 lmv_inherit_next(__u8 inherit)
196 if (inherit == LMV_INHERIT_END || inherit == LMV_INHERIT_NONE)
197 return LMV_INHERIT_NONE;
199 if (inherit == LMV_INHERIT_UNLIMITED || inherit > LMV_INHERIT_MAX)
205 static inline __u8 lmv_inherit_rr_next(__u8 inherit_rr)
207 if (inherit_rr == LMV_INHERIT_RR_NONE ||
208 inherit_rr == LMV_INHERIT_RR_UNLIMITED ||
209 inherit_rr > LMV_INHERIT_RR_MAX)
212 return inherit_rr - 1;
215 struct lod_mirror_entry {
220 /* start,end index of this mirror in ldo_comp_entries */
226 /* common fields for both files and directories */
227 struct dt_object ldo_obj;
228 struct mutex ldo_layout_mutex;
230 /* file stripe (LOV) */
232 __u32 ldo_layout_gen;
233 /* Layout component count for a regular file.
234 * It equals to 1 for non-composite layout. */
236 /* Layout mirror count for a PFLR file.
237 * It's 0 for files with non-composite layout. */
238 __u16 ldo_mirror_count;
239 struct lod_mirror_entry *ldo_mirrors;
240 __u32 ldo_is_composite:1,
245 /* directory stripe (LMV) */
247 /* Slave stripe count for striped directory. */
248 __u16 ldo_dir_stripe_count;
249 /* How many stripes allocated for a striped directory */
250 __u16 ldo_dir_stripes_allocated;
251 __u32 ldo_dir_stripe_offset;
252 __u32 ldo_dir_hash_type;
253 __u32 ldo_dir_migrate_offset;
254 __u32 ldo_dir_migrate_hash;
255 __u32 ldo_dir_layout_version;
256 /* Is a slave stripe of striped directory? */
257 __u32 ldo_dir_slave_stripe:1,
259 /* the stripe has been loaded */
260 ldo_dir_stripe_loaded:1,
261 /* foreign directory */
264 * This default LMV is parent default LMV, which will be
265 * used in child creation, and it's not cached, so this
266 * field is invalid after create, make sure it's used by
267 * lod_dir_striping_create_internal() only.
269 struct lod_default_striping *ldo_def_striping;
274 /* foreign/raw format LOV */
275 char *ldo_foreign_lov;
276 size_t ldo_foreign_lov_size;
279 /* foreign/raw format LMV */
280 char *ldo_foreign_lmv;
281 size_t ldo_foreign_lmv_size;
284 /* file stripe (LOV) */
285 struct lod_layout_component *ldo_comp_entries;
286 /* slave stripes of striped directory (LMV) */
287 struct dt_object **ldo_stripe;
292 #define ldo_dir_split_offset ldo_dir_migrate_offset
293 #define ldo_dir_split_hash ldo_dir_migrate_hash
295 #define lod_foreach_mirror_comp(comp, lo, mirror_idx) \
296 for (comp = &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_start]; \
297 comp <= &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_end]; \
300 static inline bool lod_is_flr(const struct lod_object *lo)
302 if (!lo->ldo_is_composite)
305 return (lo->ldo_flr_state & LCM_FL_FLR_MASK) != LCM_FL_NONE;
308 static inline bool lod_is_splitting(const struct lod_object *lo)
310 return lmv_hash_is_splitting(lo->ldo_dir_hash_type);
313 static inline bool lod_is_migrating(const struct lod_object *lo)
315 return lmv_hash_is_migrating(lo->ldo_dir_hash_type);
318 static inline bool lod_is_layout_changing(const struct lod_object *lo)
320 return lmv_hash_is_layout_changing(lo->ldo_dir_hash_type);
323 static inline int lod_set_pool(char **pool, const char *new_pool)
327 if (*pool == new_pool)
331 len = strlen(*pool) + 1;
332 OBD_FREE(*pool, len);
335 if (new_pool != NULL) {
336 len = strlen(new_pool) + 1;
337 OBD_ALLOC(*pool, len);
340 strlcpy(*pool, new_pool, len);
345 static inline int lod_set_def_pool(struct lod_default_striping *lds,
346 int i, const char *new_pool)
348 return lod_set_pool(&lds->lds_def_comp_entries[i].llc_pool, new_pool);
351 static inline int lod_obj_set_pool(struct lod_object *lo, int i,
352 const char *new_pool)
354 return lod_set_pool(&lo->ldo_comp_entries[i].llc_pool, new_pool);
358 * Create new layout generation.
360 * The only requirement for layout generation is that it changes when
361 * the layout is modified, so a circular counter is sufficient for the
362 * low rate of layout modifications.
364 * Layout generation is also used to generate unique component ID.
365 * To detect generation overflow, we preserve the highest bit of the
366 * generation when it wrapped.
368 static inline void lod_obj_inc_layout_gen(struct lod_object *lo)
370 __u32 preserve = lo->ldo_layout_gen & ~LCME_ID_MASK;
371 lo->ldo_layout_gen++;
372 lo->ldo_layout_gen |= preserve;
373 /* Zero is not a valid generation */
374 if (unlikely((lo->ldo_layout_gen & LCME_ID_MASK) == 0))
375 lo->ldo_layout_gen++;
379 struct dt_object *lit_obj; /* object from the layer below */
380 /* stripe offset of iteration */
381 __u32 lit_stripe_index;
383 struct dt_it *lit_it; /* iterator from the layer below */
386 struct lod_thread_info {
387 /* per-thread buffer for LOV EA, may be vmalloc'd */
389 __u32 lti_ea_store_size;
390 /* per-thread buffer for LMV EA */
391 struct lu_buf lti_buf;
392 struct ost_id lti_ostid;
393 struct lu_fid lti_fid;
394 struct obd_statfs lti_osfs;
395 struct lu_attr lti_attr;
396 struct lod_it lti_it;
397 struct ldlm_res_id lti_res_id;
398 /* used to hold lu_dirent, sizeof(struct lu_dirent) + NAME_MAX */
399 char lti_key[sizeof(struct lu_dirent) +
401 struct dt_object_format lti_format;
402 struct lu_name lti_name;
403 struct lu_buf lti_linkea_buf;
404 struct dt_insert_rec lti_dt_rec;
405 struct llog_catid lti_cid;
406 struct llog_cookie lti_cookie;
407 struct lustre_cfg lti_lustre_cfg;
408 /* used to store parent default striping in create */
409 struct lod_default_striping lti_def_striping;
410 struct filter_fid lti_ff;
412 size_t lti_comp_size;
414 struct lu_attr lti_layout_attr;
415 /* object allocation avoid guide info */
416 struct lod_avoid_guide lti_avoid;
417 union lmv_mds_md lti_lmv;
418 struct dt_allocation_hint lti_ah;
421 extern const struct lu_device_operations lod_lu_ops;
423 static inline int lu_device_is_lod(struct lu_device *d)
425 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &lod_lu_ops);
428 static inline struct lod_device* lu2lod_dev(struct lu_device *d)
430 LASSERT(lu_device_is_lod(d));
431 return container_of_safe(d, struct lod_device, lod_dt_dev.dd_lu_dev);
434 static inline struct lu_device *lod2lu_dev(struct lod_device *d)
436 return &d->lod_dt_dev.dd_lu_dev;
439 static inline struct obd_device *lod2obd(struct lod_device *d)
441 return d->lod_dt_dev.dd_lu_dev.ld_obd;
444 static inline struct lod_device *dt2lod_dev(struct dt_device *d)
446 LASSERT(lu_device_is_lod(&d->dd_lu_dev));
447 return container_of(d, struct lod_device, lod_dt_dev);
450 static inline struct lod_object *lu2lod_obj(struct lu_object *o)
452 LASSERT(ergo(o != NULL, lu_device_is_lod(o->lo_dev)));
453 return container_of_safe(o, struct lod_object, ldo_obj.do_lu);
456 static inline struct lu_object *lod2lu_obj(struct lod_object *obj)
458 return &obj->ldo_obj.do_lu;
461 static inline const struct lu_fid *lod_object_fid(struct lod_object *obj)
463 return lu_object_fid(lod2lu_obj(obj));
466 static inline struct lod_object *lod_obj(const struct lu_object *o)
468 LASSERT(lu_device_is_lod(o->lo_dev));
469 return container_of(o, struct lod_object, ldo_obj.do_lu);
472 static inline struct lod_object *lod_dt_obj(const struct dt_object *d)
474 return lod_obj(&d->do_lu);
477 static inline struct dt_object* lod_object_child(struct lod_object *o)
479 return container_of(lu_object_next(lod2lu_obj(o)),
480 struct dt_object, do_lu);
483 static inline bool lod_obj_is_striped(struct dt_object *dt)
485 struct lod_object *lo = lod_dt_obj(dt);
489 if (!dt_object_exists(dt_object_child(dt)))
492 mutex_lock(&lo->ldo_layout_mutex);
494 if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
495 rc = lo->ldo_dir_stripe_count != 0;
496 } else if (lo->ldo_is_foreign) {
499 for (i = 0; i < lo->ldo_comp_cnt; i++) {
500 if (lo->ldo_comp_entries[i].llc_stripe == NULL)
502 LASSERT(lo->ldo_comp_entries[i].llc_stripe_count > 0);
508 mutex_unlock(&lo->ldo_layout_mutex);
512 extern struct lu_context_key lod_thread_key;
514 static inline struct lod_thread_info *lod_env_info(const struct lu_env *env)
516 struct lod_thread_info *info;
517 info = lu_context_key_get(&env->le_ctx, &lod_thread_key);
522 static inline struct lu_name *
523 lod_name_get(const struct lu_env *env, const void *area, int len)
525 struct lu_name *lname;
527 lname = &lod_env_info(env)->lti_name;
528 lname->ln_name = area;
529 lname->ln_namelen = len;
533 static inline struct lod_default_striping *
534 lod_lds_buf_get(const struct lu_env *env)
536 struct lod_thread_info *info = lod_env_info(env);
538 info->lti_def_striping.lds_def_striping_set = 0;
539 info->lti_def_striping.lds_dir_def_striping_set = 0;
540 return &info->lti_def_striping;
543 static inline void lod_layout_get_pool(struct lod_layout_component *entries,
544 int count, char *pool, int len)
548 for (i = 0; i < count; i++) {
549 if (entries[i].llc_pool != NULL) {
550 strlcpy(pool, entries[i].llc_pool, len);
556 #define lod_foreach_mdt(lod, mdt) ltd_foreach_tgt(&(lod)->lod_mdt_descs, mdt)
557 #define lod_foreach_ost(lod, ost) ltd_foreach_tgt(&(lod)->lod_ost_descs, ost)
560 extern struct kmem_cache *lod_object_kmem;
561 int lod_fld_lookup(const struct lu_env *env, struct lod_device *lod,
562 const struct lu_fid *fid, __u32 *tgt, int *flags);
563 int lod_sub_init_llog(const struct lu_env *env, struct lod_device *lod,
564 struct dt_device *dt);
565 void lod_sub_fini_llog(const struct lu_env *env,
566 struct dt_device *dt, struct task_struct **taskp);
567 int lodname2mdt_index(char *lodname, __u32 *mdt_index);
568 extern void target_recovery_fini(struct obd_device *obd);
571 void lod_getref(struct lod_tgt_descs *ltd);
572 void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd);
573 int lod_add_device(const struct lu_env *env, struct lod_device *lod,
574 char *osp, unsigned index, unsigned gen, int mdt_index,
575 char *type, int active);
576 int lod_del_device(const struct lu_env *env, struct lod_device *lod,
577 struct lod_tgt_descs *ltd, char *osp, unsigned int idx,
579 int validate_lod_and_idx(struct lod_device *lod, __u32 idx);
580 int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
581 struct lod_tgt_descs *ltd);
582 int lod_striping_load(const struct lu_env *env, struct lod_object *lo);
583 int lod_striping_reload(const struct lu_env *env, struct lod_object *lo,
584 const struct lu_buf *buf);
585 void lod_dom_stripesize_recalc(struct lod_device *d);
587 int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
590 lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
592 return lod_get_ea(env, lo, XATTR_NAME_LOV);
596 lod_get_lmv_ea(const struct lu_env *env, struct lod_object *lo)
598 return lod_get_ea(env, lo, XATTR_NAME_LMV);
602 lod_get_default_lmv_ea(const struct lu_env *env, struct lod_object *lo)
604 return lod_get_ea(env, lo, XATTR_NAME_DEFAULT_LMV);
608 lod_comp_set_init(struct lod_layout_component *entry)
610 entry->llc_flags |= LCME_FL_INIT;
614 lod_comp_unset_init(struct lod_layout_component *entry)
616 entry->llc_flags &= ~LCME_FL_INIT;
620 lod_comp_inited(const struct lod_layout_component *entry)
622 return entry->llc_flags & LCME_FL_INIT;
626 * For a PFL file, some of its component could be un-instantiated, so
627 * that their lov_ost_data_v1 array is not needed, we'd use this function
628 * to reduce the LOVEA buffer size.
630 * Note: if llc_ostlist contains value, we'd need lov_ost_data_v1 array to
631 * save the specified OST index list.
634 lod_comp_shrink_stripe_count(struct lod_layout_component *lod_comp,
638 * Need one lov_ost_data_v1 to store invalid ost_idx, please refer to
639 * lod_parse_striping()
641 if (!lod_comp_inited(lod_comp) && lod_comp->llc_ostlist.op_count == 0)
645 void lod_fix_desc(struct lov_desc *desc);
646 void lod_fix_desc_qos_maxage(__u32 *val);
647 void lod_fix_desc_pattern(__u32 *val);
648 void lod_fix_desc_stripe_count(__u32 *val);
649 void lod_fix_desc_stripe_size(__u64 *val);
650 void lod_fix_lmv_desc_pattern(__u32 *val);
651 int lod_pools_init(struct lod_device *m, struct lustre_cfg *cfg);
652 int lod_pools_fini(struct lod_device *m);
653 int lod_parse_striping(const struct lu_env *env, struct lod_object *mo,
654 const struct lu_buf *buf);
655 int lod_parse_dir_striping(const struct lu_env *env, struct lod_object *lo,
656 const struct lu_buf *buf);
657 int lod_initialize_objects(const struct lu_env *env, struct lod_object *mo,
658 struct lov_ost_data_v1 *objs, int index);
659 int lod_verify_striping(const struct lu_env *env, struct lod_device *d,
660 struct lod_object *lo, const struct lu_buf *buf,
662 int lod_generate_lovea(const struct lu_env *env, struct lod_object *lo,
663 struct lov_mds_md *lmm, int *lmm_size, bool is_dir);
664 int lod_ea_store_resize(struct lod_thread_info *info, size_t size);
665 int lod_def_striping_comp_resize(struct lod_default_striping *lds, __u16 count);
666 void lod_free_def_comp_entries(struct lod_default_striping *lds);
667 void lod_free_comp_entries(struct lod_object *lo);
668 int lod_alloc_comp_entries(struct lod_object *lo, int mirror_cnt, int comp_cnt);
669 int lod_fill_mirrors(struct lod_object *lo);
672 struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname);
673 void lod_pool_putref(struct pool_desc *pool);
674 int lod_pool_del(struct obd_device *obd, char *poolname);
675 int lod_check_index_in_pool(__u32 idx, struct pool_desc *pool);
676 int lod_pool_new(struct obd_device *obd, char *poolname);
677 int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname);
678 int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
680 struct lod_obj_stripe_cb_data;
681 typedef int (*lod_obj_stripe_cb_t)(const struct lu_env *env,
682 struct lod_object *lo, struct dt_object *dt,
684 int comp_idx, int stripe_idx,
685 struct lod_obj_stripe_cb_data *data);
686 typedef bool (*lod_obj_comp_skip_cb_t)(const struct lu_env *env,
687 struct lod_object *lo, int comp_idx,
688 struct lod_obj_stripe_cb_data *data);
689 typedef int (*lod_obj_comp_cb_t)(const struct lu_env *env,
690 struct lod_object *lo, int comp_idx,
691 struct lod_obj_stripe_cb_data *data);
692 struct lod_obj_stripe_cb_data {
694 const struct lu_attr *locd_attr;
696 const struct lu_buf *locd_buf;
698 lod_obj_stripe_cb_t locd_stripe_cb;
699 lod_obj_comp_skip_cb_t locd_comp_skip_cb;
700 lod_obj_comp_cb_t locd_comp_cb;
705 int lod_mdt_alloc_qos(const struct lu_env *env, struct lod_object *lo,
706 struct dt_object **stripes, u32 stripe_idx,
708 int lod_mdt_alloc_rr(const struct lu_env *env, struct lod_object *lo,
709 struct dt_object **stripes, u32 stripe_idx,
711 int lod_prepare_create(const struct lu_env *env, struct lod_object *lo,
712 struct lu_attr *attr, const struct lu_buf *buf,
714 int lod_use_defined_striping(const struct lu_env *, struct lod_object *,
715 const struct lu_buf *);
716 int lod_qos_parse_config(const struct lu_env *env, struct lod_object *lo,
717 const struct lu_buf *buf);
718 int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
719 struct lu_attr *attr, struct thandle *th,
720 int comp_idx, __u64 reserve);
721 __u16 lod_comp_entry_stripe_count(struct lod_object *lo,
722 int comp_idx, bool is_dir);
723 __u16 lod_get_stripe_count(struct lod_device *lod, struct lod_object *lo,
724 int comp_idx, __u16 stripe_count, bool overstriping);
725 void lod_qos_statfs_update(const struct lu_env *env, struct lod_device *lod,
726 struct lu_tgt_descs *ltd);
729 int lod_procfs_init(struct lod_device *lod);
730 void lod_procfs_fini(struct lod_device *lod);
733 extern const struct dt_object_operations lod_obj_ops;
734 extern const struct lu_object_operations lod_lu_obj_ops;
736 int lod_load_lmv_shards(const struct lu_env *env, struct lod_object *lo,
737 struct lu_buf *buf, bool resize);
738 int lod_declare_striped_create(const struct lu_env *env, struct dt_object *dt,
739 struct lu_attr *attr,
740 const struct lu_buf *lovea, struct thandle *th);
741 int lod_striped_create(const struct lu_env *env, struct dt_object *dt,
742 struct lu_attr *attr, struct dt_object_format *dof,
744 int lod_alloc_foreign_lov(struct lod_object *lo, size_t size);
745 void lod_free_foreign_lov(struct lod_object *lo);
746 void lod_striping_free_nolock(const struct lu_env *env, struct lod_object *lo);
747 void lod_striping_free(const struct lu_env *env, struct lod_object *lo);
749 int lod_obj_for_each_stripe(const struct lu_env *env, struct lod_object *lo,
751 struct lod_obj_stripe_cb_data *data);
752 int lod_comp_copy_ost_lists(struct lod_layout_component *lod_comp,
753 struct lov_user_md_v3 *v3);
754 void lod_adjust_stripe_size(struct lod_layout_component *comp,
755 __u32 def_stripe_size);
757 /* lod_sub_object.c */
758 struct thandle *lod_sub_get_thandle(const struct lu_env *env,
760 const struct dt_object *sub_obj,
761 bool *record_update);
762 int lod_sub_declare_create(const struct lu_env *env, struct dt_object *dt,
763 struct lu_attr *attr,
764 struct dt_allocation_hint *hint,
765 struct dt_object_format *dof, struct thandle *th);
766 int lod_sub_create(const struct lu_env *env, struct dt_object *dt,
767 struct lu_attr *attr, struct dt_allocation_hint *hint,
768 struct dt_object_format *dof, struct thandle *th);
769 int lod_sub_declare_ref_add(const struct lu_env *env, struct dt_object *dt,
771 int lod_sub_ref_add(const struct lu_env *env, struct dt_object *dt,
773 int lod_sub_declare_ref_del(const struct lu_env *env, struct dt_object *dt,
775 int lod_sub_ref_del(const struct lu_env *env, struct dt_object *dt,
777 int lod_sub_declare_destroy(const struct lu_env *env, struct dt_object *dt,
779 int lod_sub_destroy(const struct lu_env *env, struct dt_object *dt,
781 int lod_sub_declare_insert(const struct lu_env *env, struct dt_object *dt,
782 const struct dt_rec *rec, const struct dt_key *key,
784 int lod_sub_insert(const struct lu_env *env, struct dt_object *dt,
785 const struct dt_rec *rec, const struct dt_key *key,
787 int lod_sub_declare_delete(const struct lu_env *env, struct dt_object *dt,
788 const struct dt_key *key, struct thandle *th);
789 int lod_sub_delete(const struct lu_env *env, struct dt_object *dt,
790 const struct dt_key *name, struct thandle *th);
791 int lod_sub_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
792 const struct lu_buf *buf, const char *name,
793 int fl, struct thandle *th);
794 int lod_sub_xattr_set(const struct lu_env *env, struct dt_object *dt,
795 const struct lu_buf *buf, const char *name, int fl,
797 int lod_sub_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
798 const struct lu_attr *attr, struct thandle *th);
799 int lod_sub_attr_set(const struct lu_env *env, struct dt_object *dt,
800 const struct lu_attr *attr, struct thandle *th);
801 int lod_sub_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
802 const char *name, struct thandle *th);
803 int lod_sub_xattr_del(const struct lu_env *env, struct dt_object *dt,
804 const char *name, struct thandle *th);
805 int lod_sub_declare_write(const struct lu_env *env, struct dt_object *dt,
806 const struct lu_buf *buf, loff_t pos,
808 ssize_t lod_sub_write(const struct lu_env *env, struct dt_object *dt,
809 const struct lu_buf *buf, loff_t *pos,
811 int lod_sub_declare_punch(const struct lu_env *env, struct dt_object *dt,
812 __u64 start, __u64 end, struct thandle *th);
813 int lod_sub_punch(const struct lu_env *env, struct dt_object *dt,
814 __u64 start, __u64 end, struct thandle *th);
816 int lod_sub_prep_llog(const struct lu_env *env, struct lod_device *lod,
817 struct dt_device *dt, int index);