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 */
66 time64_t pool_spill_expire;
67 struct proc_dir_entry *pool_spill_proc_entry;
68 bool pool_spill_is_active;
69 unsigned int pool_spill_threshold_pct;
70 char pool_spill_target[LOV_MAXPOOLNAME + 1];
74 int lod_pool_hash_init(struct rhashtable *tbl);
75 void lod_pool_hash_destroy(struct rhashtable *tbl);
76 bool lod_pool_exists(struct lod_device *lod, char *poolname);
78 #define pool_tgt_count(p) ((p)->pool_obds.op_count)
79 #define pool_tgt_array(p) ((p)->pool_obds.op_array)
80 #define pool_tgt_rw_sem(p) ((p)->pool_obds.op_rw_sem)
82 #define lod_tgt_desc lu_tgt_desc
83 #define lod_tgt_descs lu_tgt_descs
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)
88 struct lod_avoid_guide {
89 /* ids of OSSs avoid guidance */
90 __u32 *lag_oss_avoid_array;
91 /* number of filled array items */
92 unsigned int lag_oaa_count;
93 /* number of allocated array items */
94 unsigned int lag_oaa_size;
95 /* bitmap of OSTs avoid guidance */
96 unsigned long *lag_ost_avoid_bitmap;
97 u32 lag_ost_avoid_size;
98 /* how many OSTs are available for alloc */
102 #define LOD_DOM_MIN_SIZE_KB (LOV_MIN_STRIPE_SIZE >> 10)
103 #define LOD_DOM_SFS_MAX_AGE 10
106 struct dt_device lod_dt_dev;
107 struct obd_export *lod_child_exp;
108 struct dt_device *lod_child;
109 struct lprocfs_stats *lod_stats;
110 spinlock_t lod_connects_lock;
112 unsigned int lod_recovery_completed:1,
115 lod_child_got_update_log:1;
117 /* protect ld_active_tgt_count, ltd_active and lod_md_root */
120 /* Description of OST */
121 struct lod_tgt_descs lod_ost_descs;
122 /* Description of MDT */
123 struct lod_tgt_descs lod_mdt_descs;
125 /* Recovery thread for lod_child */
126 struct task_struct *lod_child_recovery_task;
128 /* maximum EA size underlied OSD may have */
129 unsigned int lod_osd_max_easize;
130 /* maximum size of MDT stripe for Data-on-MDT files. */
131 unsigned int lod_dom_stripesize_max_kb;
132 /* current DOM default stripe size adjusted by threshold */
133 unsigned int lod_dom_stripesize_cur_kb;
134 /* Threshold at which DOM default stripe will start decreasing */
135 __u64 lod_dom_threshold_free_mb;
137 /* Local OSD statfs cache */
138 spinlock_t lod_lsfs_lock;
139 time64_t lod_lsfs_age;
140 __u64 lod_lsfs_total_mb;
141 __u64 lod_lsfs_free_mb;
145 struct rhashtable lod_pools_hash_body; /* used for key access */
146 struct list_head lod_pool_list; /* used for sequential access */
147 struct proc_dir_entry *lod_pool_proc_entry;
148 struct proc_dir_entry *lod_spill_proc_entry;
150 enum lustre_sec_part lod_sp_me;
152 struct proc_dir_entry *lod_symlink;
153 struct dentry *lod_debugfs;
155 /* ROOT object, used to fetch FS default striping */
156 struct lod_object *lod_md_root;
159 #define lod_ost_bitmap lod_ost_descs.ltd_tgt_bitmap
160 #define lod_ost_count lod_ost_descs.ltd_lov_desc.ld_tgt_count
161 #define lod_ost_active_count lod_ost_descs.ltd_lov_desc.ld_active_tgt_count
162 #define lod_remote_mdt_count lod_mdt_descs.ltd_lmv_desc.ld_tgt_count
164 struct lod_layout_component {
165 struct lu_extent llc_extent;
168 __u32 llc_stripe_size;
170 __u16 llc_layout_gen;
171 __u16 llc_stripe_offset;
172 __u16 llc_stripe_count;
173 __u16 llc_stripes_allocated;
174 __u64 llc_timestamp; /* snapshot time */
176 /* ost list specified with LOV_USER_MAGIC_SPECIFIC lum */
177 struct lu_tgt_pool llc_ostlist;
178 struct dt_object **llc_stripe;
179 __u32 *llc_ost_indices;
182 struct lod_default_striping {
184 /* current layout component count */
185 __u16 lds_def_comp_cnt;
186 __u16 lds_def_mirror_cnt;
187 /* the largest comp count ever used */
188 __u32 lds_def_comp_size_cnt;
189 struct lod_layout_component *lds_def_comp_entries;
191 __u32 lds_dir_def_stripe_count;
192 __u32 lds_dir_def_stripe_offset;
193 __u32 lds_dir_def_hash_type;
194 __u8 lds_dir_def_max_inherit;
195 __u8 lds_dir_def_max_inherit_rr;
196 /* default file striping flags (LOV) */
197 __u32 lds_def_striping_set:1,
198 lds_def_striping_is_composite:1,
199 /* default dir striping flags (LMV) */
200 lds_dir_def_striping_set:1;
203 static inline __u8 lmv_inherit_next(__u8 inherit)
205 if (inherit == LMV_INHERIT_END || inherit == LMV_INHERIT_NONE)
206 return LMV_INHERIT_NONE;
208 if (inherit == LMV_INHERIT_UNLIMITED || inherit > LMV_INHERIT_MAX)
214 static inline __u8 lmv_inherit_rr_next(__u8 inherit_rr)
216 if (inherit_rr == LMV_INHERIT_RR_NONE ||
217 inherit_rr == LMV_INHERIT_RR_UNLIMITED ||
218 inherit_rr > LMV_INHERIT_RR_MAX)
221 return inherit_rr - 1;
224 struct lod_mirror_entry {
230 __u16 lme_preference;
231 /* start,end index of this mirror in ldo_comp_entries */
237 /* common fields for both files and directories */
238 struct dt_object ldo_obj;
239 struct mutex ldo_layout_mutex;
241 /* file stripe (LOV) */
243 __u32 ldo_layout_gen;
244 /* Layout component count for a regular file.
245 * It equals to 1 for non-composite layout. */
247 /* Layout mirror count for a PFLR file.
248 * It's 0 for files with non-composite layout. */
249 __u16 ldo_mirror_count;
250 struct lod_mirror_entry *ldo_mirrors;
251 __u32 ldo_is_composite:1,
256 /* directory stripe (LMV) */
258 /* Slave stripe count for striped directory. */
259 __u16 ldo_dir_stripe_count;
260 /* How many stripes allocated for a striped directory */
261 __u16 ldo_dir_stripes_allocated;
262 __u32 ldo_dir_stripe_offset;
263 __u32 ldo_dir_hash_type;
264 __u32 ldo_dir_migrate_offset;
265 __u32 ldo_dir_migrate_hash;
266 __u32 ldo_dir_layout_version;
267 /* Is a slave stripe of striped directory? */
268 __u32 ldo_dir_slave_stripe:1,
270 /* the stripe has been loaded */
271 ldo_dir_stripe_loaded:1,
272 /* foreign directory */
275 * This default LMV is parent default LMV, which will be
276 * used in child creation, and it's not cached, so this
277 * field is invalid after create, make sure it's used by
278 * lod_dir_striping_create_internal() only.
280 struct lod_default_striping *ldo_def_striping;
285 /* foreign/raw format LOV */
286 char *ldo_foreign_lov;
287 size_t ldo_foreign_lov_size;
290 /* foreign/raw format LMV */
291 char *ldo_foreign_lmv;
292 size_t ldo_foreign_lmv_size;
295 /* file stripe (LOV) */
296 struct lod_layout_component *ldo_comp_entries;
297 /* slave stripes of striped directory (LMV) */
298 struct dt_object **ldo_stripe;
303 #define ldo_dir_split_offset ldo_dir_migrate_offset
304 #define ldo_dir_split_hash ldo_dir_migrate_hash
306 #define lod_foreach_mirror_comp(comp, lo, mirror_idx) \
307 for (comp = &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_start]; \
308 comp <= &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_end]; \
311 static inline bool lod_is_flr(const struct lod_object *lo)
313 if (!lo->ldo_is_composite)
316 return (lo->ldo_flr_state & LCM_FL_FLR_MASK) != LCM_FL_NONE;
319 static inline bool lod_is_splitting(const struct lod_object *lo)
321 return lmv_hash_is_splitting(lo->ldo_dir_hash_type);
324 static inline bool lod_is_migrating(const struct lod_object *lo)
326 return lmv_hash_is_migrating(lo->ldo_dir_hash_type);
329 static inline bool lod_is_layout_changing(const struct lod_object *lo)
331 return lmv_hash_is_layout_changing(lo->ldo_dir_hash_type);
334 static inline int lod_set_pool(char **pool, const char *new_pool)
338 if (*pool == new_pool)
342 len = strlen(*pool) + 1;
343 OBD_FREE(*pool, len);
346 if (new_pool != NULL) {
347 len = strlen(new_pool) + 1;
348 OBD_ALLOC(*pool, len);
351 strlcpy(*pool, new_pool, len);
356 static inline int lod_set_def_pool(struct lod_default_striping *lds,
357 int i, const char *new_pool)
359 return lod_set_pool(&lds->lds_def_comp_entries[i].llc_pool, new_pool);
362 static inline int lod_obj_set_pool(struct lod_object *lo, int i,
363 const char *new_pool)
365 return lod_set_pool(&lo->ldo_comp_entries[i].llc_pool, new_pool);
369 * Create new layout generation.
371 * The only requirement for layout generation is that it changes when
372 * the layout is modified, so a circular counter is sufficient for the
373 * low rate of layout modifications.
375 * Layout generation is also used to generate unique component ID.
376 * To detect generation overflow, we preserve the highest bit of the
377 * generation when it wrapped.
379 static inline void lod_obj_inc_layout_gen(struct lod_object *lo)
381 __u32 preserve = lo->ldo_layout_gen & ~LCME_ID_MASK;
382 lo->ldo_layout_gen++;
383 lo->ldo_layout_gen |= preserve;
384 /* Zero is not a valid generation */
385 if (unlikely((lo->ldo_layout_gen & LCME_ID_MASK) == 0))
386 lo->ldo_layout_gen++;
390 struct dt_object *lit_obj; /* object from the layer below */
391 /* stripe offset of iteration */
392 __u32 lit_stripe_index;
394 struct dt_it *lit_it; /* iterator from the layer below */
397 struct lod_thread_info {
398 /* per-thread buffer for LOV EA, may be vmalloc'd */
400 __u32 lti_ea_store_size;
401 /* per-thread buffer for LMV EA */
402 struct lu_buf lti_buf;
403 struct ost_id lti_ostid;
404 struct lu_fid lti_fid;
405 struct obd_statfs lti_osfs;
406 struct lu_attr lti_attr;
407 struct lod_it lti_it;
408 struct ldlm_res_id lti_res_id;
409 /* used to hold lu_dirent, sizeof(struct lu_dirent) + NAME_MAX */
410 char lti_key[sizeof(struct lu_dirent) +
412 struct dt_object_format lti_format;
413 struct lu_name lti_name;
414 struct lu_buf lti_linkea_buf;
415 struct dt_insert_rec lti_dt_rec;
416 struct llog_catid lti_cid;
417 struct llog_cookie lti_cookie;
418 struct lustre_cfg lti_lustre_cfg;
419 /* used to store parent default striping in create */
420 struct lod_default_striping lti_def_striping;
421 struct filter_fid lti_ff;
423 size_t lti_comp_size;
425 struct lu_attr lti_layout_attr;
426 /* object allocation avoid guide info */
427 struct lod_avoid_guide lti_avoid;
428 union lmv_mds_md lti_lmv;
429 struct dt_allocation_hint lti_ah;
432 extern const struct lu_device_operations lod_lu_ops;
434 static inline int lu_device_is_lod(struct lu_device *d)
436 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &lod_lu_ops);
439 static inline struct lod_device* lu2lod_dev(struct lu_device *d)
441 LASSERT(lu_device_is_lod(d));
442 return container_of_safe(d, struct lod_device, lod_dt_dev.dd_lu_dev);
445 static inline struct lu_device *lod2lu_dev(struct lod_device *d)
447 return &d->lod_dt_dev.dd_lu_dev;
450 static inline struct obd_device *lod2obd(struct lod_device *d)
452 return d->lod_dt_dev.dd_lu_dev.ld_obd;
455 static inline struct lod_device *dt2lod_dev(struct dt_device *d)
457 LASSERT(lu_device_is_lod(&d->dd_lu_dev));
458 return container_of(d, struct lod_device, lod_dt_dev);
461 static inline struct lod_object *lu2lod_obj(struct lu_object *o)
463 LASSERT(ergo(o != NULL, lu_device_is_lod(o->lo_dev)));
464 return container_of_safe(o, struct lod_object, ldo_obj.do_lu);
467 static inline struct lu_object *lod2lu_obj(struct lod_object *obj)
469 return &obj->ldo_obj.do_lu;
472 static inline const struct lu_fid *lod_object_fid(struct lod_object *obj)
474 return lu_object_fid(lod2lu_obj(obj));
477 static inline struct lod_object *lod_obj(const struct lu_object *o)
479 LASSERT(lu_device_is_lod(o->lo_dev));
480 return container_of(o, struct lod_object, ldo_obj.do_lu);
483 static inline struct lod_object *lod_dt_obj(const struct dt_object *d)
485 return lod_obj(&d->do_lu);
488 static inline struct dt_object* lod_object_child(struct lod_object *o)
490 return container_of(lu_object_next(lod2lu_obj(o)),
491 struct dt_object, do_lu);
494 static inline bool lod_obj_is_striped(struct dt_object *dt)
496 struct lod_object *lo = lod_dt_obj(dt);
500 if (!dt_object_exists(dt_object_child(dt)))
503 mutex_lock(&lo->ldo_layout_mutex);
505 if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
506 rc = lo->ldo_dir_stripe_count != 0;
507 } else if (lo->ldo_is_foreign) {
510 for (i = 0; i < lo->ldo_comp_cnt; i++) {
511 if (lo->ldo_comp_entries[i].llc_stripe == NULL)
513 LASSERT(lo->ldo_comp_entries[i].llc_stripe_count > 0);
519 mutex_unlock(&lo->ldo_layout_mutex);
523 extern struct lu_context_key lod_thread_key;
525 static inline struct lod_thread_info *lod_env_info(const struct lu_env *env)
527 struct lod_thread_info *info;
528 info = lu_context_key_get(&env->le_ctx, &lod_thread_key);
533 static inline struct lu_name *
534 lod_name_get(const struct lu_env *env, const void *area, int len)
536 struct lu_name *lname;
538 lname = &lod_env_info(env)->lti_name;
539 lname->ln_name = area;
540 lname->ln_namelen = len;
544 static inline struct lod_default_striping *
545 lod_lds_buf_get(const struct lu_env *env)
547 struct lod_thread_info *info = lod_env_info(env);
549 info->lti_def_striping.lds_def_striping_set = 0;
550 info->lti_def_striping.lds_dir_def_striping_set = 0;
551 return &info->lti_def_striping;
554 static inline void lod_layout_get_pool(struct lod_layout_component *entries,
555 int count, char *pool, int len)
559 for (i = 0; i < count; i++) {
560 if (entries[i].llc_pool != NULL) {
561 strlcpy(pool, entries[i].llc_pool, len);
567 #define lod_foreach_mdt(lod, mdt) ltd_foreach_tgt(&(lod)->lod_mdt_descs, mdt)
568 #define lod_foreach_ost(lod, ost) ltd_foreach_tgt(&(lod)->lod_ost_descs, ost)
571 extern struct kmem_cache *lod_object_kmem;
572 int lod_fld_lookup(const struct lu_env *env, struct lod_device *lod,
573 const struct lu_fid *fid, __u32 *tgt, int *flags);
574 int lod_sub_init_llog(const struct lu_env *env, struct lod_device *lod,
575 struct dt_device *dt);
576 void lod_sub_fini_llog(const struct lu_env *env,
577 struct dt_device *dt, struct task_struct **taskp);
578 int lodname2mdt_index(char *lodname, __u32 *mdt_index);
579 extern void target_recovery_fini(struct obd_device *obd);
582 void lod_getref(struct lod_tgt_descs *ltd);
583 void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd);
584 int lod_add_device(const struct lu_env *env, struct lod_device *lod,
585 char *osp, unsigned index, unsigned gen, int mdt_index,
586 char *type, int active);
587 int lod_del_device(const struct lu_env *env, struct lod_device *lod,
588 struct lod_tgt_descs *ltd, char *osp, unsigned int idx,
590 int validate_lod_and_idx(struct lod_device *lod, __u32 idx);
591 int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
592 struct lod_tgt_descs *ltd);
593 int lod_striping_load(const struct lu_env *env, struct lod_object *lo);
594 int lod_striping_reload(const struct lu_env *env, struct lod_object *lo,
595 const struct lu_buf *buf);
596 void lod_dom_stripesize_recalc(struct lod_device *d);
598 int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
601 lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
603 return lod_get_ea(env, lo, XATTR_NAME_LOV);
607 lod_get_lmv_ea(const struct lu_env *env, struct lod_object *lo)
609 return lod_get_ea(env, lo, XATTR_NAME_LMV);
613 lod_get_default_lmv_ea(const struct lu_env *env, struct lod_object *lo)
615 return lod_get_ea(env, lo, XATTR_NAME_DEFAULT_LMV);
619 lod_comp_set_init(struct lod_layout_component *entry)
621 entry->llc_flags |= LCME_FL_INIT;
625 lod_comp_unset_init(struct lod_layout_component *entry)
627 entry->llc_flags &= ~LCME_FL_INIT;
631 lod_comp_inited(const struct lod_layout_component *entry)
633 return entry->llc_flags & LCME_FL_INIT;
637 * For a PFL file, some of its component could be un-instantiated, so
638 * that their lov_ost_data_v1 array is not needed, we'd use this function
639 * to reduce the LOVEA buffer size.
641 * Note: if llc_ostlist contains value, we'd need lov_ost_data_v1 array to
642 * save the specified OST index list.
645 lod_comp_shrink_stripe_count(struct lod_layout_component *lod_comp,
649 * Need one lov_ost_data_v1 to store invalid ost_idx, please refer to
650 * lod_parse_striping()
652 if (!lod_comp_inited(lod_comp) && lod_comp->llc_ostlist.op_count == 0)
656 void lod_fix_desc(struct lov_desc *desc);
657 void lod_fix_desc_qos_maxage(__u32 *val);
658 void lod_fix_desc_pattern(__u32 *val);
659 void lod_fix_desc_stripe_count(__u32 *val);
660 void lod_fix_desc_stripe_size(__u64 *val);
661 void lod_fix_lmv_desc_pattern(__u32 *val);
662 int lod_pools_init(struct lod_device *m, struct lustre_cfg *cfg);
663 int lod_pools_fini(struct lod_device *m);
664 int lod_parse_striping(const struct lu_env *env, struct lod_object *mo,
665 const struct lu_buf *buf);
666 int lod_parse_dir_striping(const struct lu_env *env, struct lod_object *lo,
667 const struct lu_buf *buf);
668 int lod_initialize_objects(const struct lu_env *env, struct lod_object *mo,
669 struct lov_ost_data_v1 *objs, int index);
670 int lod_verify_striping(const struct lu_env *env, struct lod_device *d,
671 struct lod_object *lo, const struct lu_buf *buf,
673 int lod_generate_lovea(const struct lu_env *env, struct lod_object *lo,
674 struct lov_mds_md *lmm, int *lmm_size, bool is_dir);
675 int lod_ea_store_resize(struct lod_thread_info *info, size_t size);
676 int lod_def_striping_comp_resize(struct lod_default_striping *lds, __u16 count);
677 void lod_free_def_comp_entries(struct lod_default_striping *lds);
678 void lod_free_comp_entries(struct lod_object *lo);
679 int lod_alloc_comp_entries(struct lod_object *lo, int mirror_cnt, int comp_cnt);
680 int lod_fill_mirrors(struct lod_object *lo);
683 struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname);
684 void lod_pool_putref(struct pool_desc *pool);
685 int lod_pool_del(struct obd_device *obd, char *poolname);
686 int lod_check_index_in_pool(__u32 idx, struct pool_desc *pool);
687 int lod_pool_new(struct obd_device *obd, char *poolname);
688 int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname);
689 int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
691 struct lod_obj_stripe_cb_data;
692 typedef int (*lod_obj_stripe_cb_t)(const struct lu_env *env,
693 struct lod_object *lo, struct dt_object *dt,
695 int comp_idx, int stripe_idx,
696 struct lod_obj_stripe_cb_data *data);
697 typedef bool (*lod_obj_comp_skip_cb_t)(const struct lu_env *env,
698 struct lod_object *lo, int comp_idx,
699 struct lod_obj_stripe_cb_data *data);
700 typedef int (*lod_obj_comp_cb_t)(const struct lu_env *env,
701 struct lod_object *lo, int comp_idx,
702 struct lod_obj_stripe_cb_data *data);
703 struct lod_obj_stripe_cb_data {
705 const struct lu_attr *locd_attr;
707 const struct lu_buf *locd_buf;
709 lod_obj_stripe_cb_t locd_stripe_cb;
710 lod_obj_comp_skip_cb_t locd_comp_skip_cb;
711 lod_obj_comp_cb_t locd_comp_cb;
716 int lod_mdt_alloc_qos(const struct lu_env *env, struct lod_object *lo,
717 struct dt_object **stripes, u32 stripe_idx,
719 int lod_mdt_alloc_rr(const struct lu_env *env, struct lod_object *lo,
720 struct dt_object **stripes, u32 stripe_idx,
722 int lod_prepare_create(const struct lu_env *env, struct lod_object *lo,
723 struct lu_attr *attr, const struct lu_buf *buf,
725 int lod_use_defined_striping(const struct lu_env *, struct lod_object *,
726 const struct lu_buf *);
727 int lod_qos_parse_config(const struct lu_env *env, struct lod_object *lo,
728 const struct lu_buf *buf);
729 int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
730 struct lu_attr *attr, struct thandle *th,
731 int comp_idx, __u64 reserve);
732 __u16 lod_comp_entry_stripe_count(struct lod_object *lo,
733 int comp_idx, bool is_dir);
734 __u16 lod_get_stripe_count(struct lod_device *lod, struct lod_object *lo,
735 int comp_idx, __u16 stripe_count, bool overstriping);
736 void lod_qos_statfs_update(const struct lu_env *env, struct lod_device *lod,
737 struct lu_tgt_descs *ltd);
740 int lod_procfs_init(struct lod_device *lod);
741 void lod_procfs_fini(struct lod_device *lod);
744 extern const struct dt_object_operations lod_obj_ops;
745 extern const struct lu_object_operations lod_lu_obj_ops;
747 int lod_load_lmv_shards(const struct lu_env *env, struct lod_object *lo,
748 struct lu_buf *buf, bool resize);
749 int lod_declare_striped_create(const struct lu_env *env, struct dt_object *dt,
750 struct lu_attr *attr,
751 const struct lu_buf *lovea, struct thandle *th);
752 int lod_striped_create(const struct lu_env *env, struct dt_object *dt,
753 struct lu_attr *attr, struct dt_object_format *dof,
755 int lod_alloc_foreign_lov(struct lod_object *lo, size_t size);
756 void lod_free_foreign_lov(struct lod_object *lo);
757 void lod_striping_free_nolock(const struct lu_env *env, struct lod_object *lo);
758 void lod_striping_free(const struct lu_env *env, struct lod_object *lo);
760 int lod_obj_for_each_stripe(const struct lu_env *env, struct lod_object *lo,
762 struct lod_obj_stripe_cb_data *data);
763 int lod_comp_copy_ost_lists(struct lod_layout_component *lod_comp,
764 struct lov_user_md_v3 *v3);
765 void lod_adjust_stripe_size(struct lod_layout_component *comp,
766 __u32 def_stripe_size);
768 /* lod_sub_object.c */
769 struct thandle *lod_sub_get_thandle(const struct lu_env *env,
771 const struct dt_object *sub_obj,
772 bool *record_update);
773 int lod_sub_declare_create(const struct lu_env *env, struct dt_object *dt,
774 struct lu_attr *attr,
775 struct dt_allocation_hint *hint,
776 struct dt_object_format *dof, struct thandle *th);
777 int lod_sub_create(const struct lu_env *env, struct dt_object *dt,
778 struct lu_attr *attr, struct dt_allocation_hint *hint,
779 struct dt_object_format *dof, struct thandle *th);
780 int lod_sub_declare_ref_add(const struct lu_env *env, struct dt_object *dt,
782 int lod_sub_ref_add(const struct lu_env *env, struct dt_object *dt,
784 int lod_sub_declare_ref_del(const struct lu_env *env, struct dt_object *dt,
786 int lod_sub_ref_del(const struct lu_env *env, struct dt_object *dt,
788 int lod_sub_declare_destroy(const struct lu_env *env, struct dt_object *dt,
790 int lod_sub_destroy(const struct lu_env *env, struct dt_object *dt,
792 int lod_sub_declare_insert(const struct lu_env *env, struct dt_object *dt,
793 const struct dt_rec *rec, const struct dt_key *key,
795 int lod_sub_insert(const struct lu_env *env, struct dt_object *dt,
796 const struct dt_rec *rec, const struct dt_key *key,
798 int lod_sub_declare_delete(const struct lu_env *env, struct dt_object *dt,
799 const struct dt_key *key, struct thandle *th);
800 int lod_sub_delete(const struct lu_env *env, struct dt_object *dt,
801 const struct dt_key *name, struct thandle *th);
802 int lod_sub_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
803 const struct lu_buf *buf, const char *name,
804 int fl, struct thandle *th);
805 int lod_sub_xattr_set(const struct lu_env *env, struct dt_object *dt,
806 const struct lu_buf *buf, const char *name, int fl,
808 int lod_sub_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
809 const struct lu_attr *attr, struct thandle *th);
810 int lod_sub_attr_set(const struct lu_env *env, struct dt_object *dt,
811 const struct lu_attr *attr, struct thandle *th);
812 int lod_sub_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
813 const char *name, struct thandle *th);
814 int lod_sub_xattr_del(const struct lu_env *env, struct dt_object *dt,
815 const char *name, struct thandle *th);
816 int lod_sub_declare_write(const struct lu_env *env, struct dt_object *dt,
817 const struct lu_buf *buf, loff_t pos,
819 ssize_t lod_sub_write(const struct lu_env *env, struct dt_object *dt,
820 const struct lu_buf *buf, loff_t *pos,
822 int lod_sub_declare_punch(const struct lu_env *env, struct dt_object *dt,
823 __u64 start, __u64 end, struct thandle *th);
824 int lod_sub_punch(const struct lu_env *env, struct dt_object *dt,
825 __u64 start, __u64 end, struct thandle *th);
827 int lod_sub_prep_llog(const struct lu_env *env, struct lod_device *lod,
828 struct dt_device *dt, int index);
829 void lod_check_and_spill_pool(const struct lu_env *env, struct lod_device *lod,
831 void lod_spill_target_refresh(const struct lu_env *env, struct lod_device *lod,
832 struct pool_desc *pool);
833 extern struct lprocfs_vars lprocfs_lod_spill_vars[];