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>
46 LOD_USES_ASSIGNED_STRIPE = 0,
47 LOD_USES_DEFAULT_STRIPE,
50 /* Special values to remove LOV EA from disk */
51 #define LOVEA_DELETE_VALUES(size, count, offset, pool) \
52 ((size) == 0 && (count) == 0 && \
53 (offset) == (typeof(offset))(-1) && (pool) == NULL)
55 #define LMVEA_DELETE_VALUES(count, offset) \
56 ((count) == 0 && (offset) == (typeof(offset))(-1))
59 char pool_name[LOV_MAXPOOLNAME + 1];
60 struct lu_tgt_pool pool_obds; /* pool members */
61 atomic_t pool_refcount;
62 struct lu_qos_rr pool_rr;
63 struct rhash_head pool_hash; /* access by poolname */
64 struct list_head pool_list;
65 struct rcu_head pool_rcu;
66 struct proc_dir_entry *pool_proc_entry;
67 struct obd_device *pool_lobd; /* owner */
68 time64_t pool_spill_expire;
69 struct proc_dir_entry *pool_spill_proc_entry;
70 bool pool_spill_is_active;
71 unsigned int pool_spill_threshold_pct;
72 atomic_t pool_spill_hit;
73 char pool_spill_target[LOV_MAXPOOLNAME + 1];
74 bool pool_same_space; /* targets in pool balanced*/
75 time64_t pool_same_space_expire; /*uses ld_qos_maxage*/
76 struct dentry *pool_debugfs;
80 int lod_pool_hash_init(struct rhashtable *tbl);
81 void lod_pool_hash_destroy(struct rhashtable *tbl);
82 bool lod_pool_exists(struct lod_device *lod, char *poolname);
84 #define pool_tgt_count(p) ((p)->pool_obds.op_count)
85 #define pool_tgt_array(p) ((p)->pool_obds.op_array)
86 #define pool_tgt_rw_sem(p) ((p)->pool_obds.op_rw_sem)
88 #define lod_tgt_desc lu_tgt_desc
89 #define lod_tgt_descs lu_tgt_descs
91 #define OST_TGT(lod, index) LTD_TGT(&lod->lod_ost_descs, index)
92 #define MDT_TGT(lod, index) LTD_TGT(&lod->lod_mdt_descs, index)
94 struct lod_avoid_guide {
95 /* ids of OSSs avoid guidance */
96 __u32 *lag_oss_avoid_array;
97 /* number of filled array items */
98 unsigned int lag_oaa_count;
99 /* number of allocated array items */
100 unsigned int lag_oaa_size;
101 /* bitmap of OSTs avoid guidance */
102 unsigned long *lag_ost_avoid_bitmap;
103 u32 lag_ost_avoid_size;
104 /* how many OSTs are available for alloc */
108 #define LOD_DOM_MIN_SIZE_KB (LOV_MIN_STRIPE_SIZE >> 10)
109 #define LOD_DOM_SFS_MAX_AGE 10
112 struct dt_device lod_dt_dev;
113 struct obd_export *lod_child_exp;
114 struct dt_device *lod_child;
115 struct lprocfs_stats *lod_stats;
116 spinlock_t lod_connects_lock;
118 unsigned int lod_recovery_completed:1,
121 lod_child_got_update_log:1,
122 lod_dist_txn_check_space:1;
124 /* protect ld_active_tgt_count, ltd_active and lod_md_root */
127 /* Description of OST */
128 struct lod_tgt_descs lod_ost_descs;
129 /* Description of MDT */
130 struct lod_tgt_descs lod_mdt_descs;
132 /* Recovery thread for lod_child */
133 struct task_struct *lod_child_recovery_task;
135 /* maximum EA size underlied OSD may have */
136 unsigned int lod_osd_max_easize;
137 /* maximum size of MDT stripe for Data-on-MDT files. */
138 unsigned int lod_dom_stripesize_max_kb;
139 /* current DOM default stripe size adjusted by threshold */
140 unsigned int lod_dom_stripesize_cur_kb;
141 /* Threshold at which DOM default stripe will start decreasing */
142 __u64 lod_dom_threshold_free_mb;
144 /* Local OSD statfs cache */
145 spinlock_t lod_lsfs_lock;
146 time64_t lod_lsfs_age;
147 __u64 lod_lsfs_total_mb;
148 __u64 lod_lsfs_free_mb;
152 struct rhashtable lod_pools_hash_body; /* used for key access */
153 struct list_head lod_pool_list; /* used for sequential access */
154 struct proc_dir_entry *lod_pool_proc_entry;
155 struct proc_dir_entry *lod_spill_proc_entry;
157 enum lustre_sec_part lod_sp_me;
159 struct proc_dir_entry *lod_symlink;
160 struct dentry *lod_debugfs;
161 struct dentry *lod_pool_debugfs;
163 /* ROOT object, used to fetch FS default striping */
164 struct lod_object *lod_md_root;
166 /* max stripe count if stripe count is set to -1. 0 means unlimited */
167 unsigned int lod_max_stripecount;
168 unsigned int lod_max_mdt_stripecount;
171 #define lod_ost_bitmap lod_ost_descs.ltd_tgt_bitmap
172 #define lod_ost_count lod_ost_descs.ltd_lov_desc.ld_tgt_count
173 #define lod_ost_active_count lod_ost_descs.ltd_lov_desc.ld_active_tgt_count
174 #define lod_remote_mdt_count lod_mdt_descs.ltd_lmv_desc.ld_tgt_count
176 struct lod_layout_component {
177 struct lu_extent llc_extent;
180 __u32 llc_stripe_size;
182 __u16 llc_layout_gen;
183 __u16 llc_stripe_offset;
184 __u16 llc_stripe_count;
185 __u16 llc_stripes_allocated;
186 __u64 llc_timestamp; /* snapshot time */
188 /* ost list specified with LOV_USER_MAGIC_SPECIFIC lum */
189 struct lu_tgt_pool llc_ostlist;
190 struct dt_object **llc_stripe;
191 __u32 *llc_ost_indices;
194 struct lod_default_striping {
196 /* current layout component count */
197 __u16 lds_def_comp_cnt;
198 __u16 lds_def_mirror_cnt;
199 /* the largest comp count ever used */
200 __u32 lds_def_comp_size_cnt;
201 struct lod_layout_component *lds_def_comp_entries;
203 __u32 lds_dir_def_stripe_count;
204 __u32 lds_dir_def_stripe_offset;
205 __u32 lds_dir_def_hash_type;
206 __u8 lds_dir_def_max_inherit;
207 __u8 lds_dir_def_max_inherit_rr;
208 /* default file striping flags (LOV) */
209 __u32 lds_def_striping_set:1,
210 lds_def_striping_is_composite:1,
211 /* default dir striping flags (LMV) */
212 lds_dir_def_striping_set:1;
215 enum layout_verify_flags {
216 LVF_ALL_STALE = BIT(0), /* check not all stale mirrors */
219 struct lod_mirror_entry {
225 __u16 lme_preference;
226 /* start,end index of this mirror in ldo_comp_entries */
232 /* common fields for both files and directories */
233 struct dt_object ldo_obj;
234 struct mutex ldo_layout_mutex;
235 /* foreign file/directory */
236 __u32 ldo_is_foreign:1;
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,
252 /* directory stripe (LMV) */
254 /* Slave stripe count for striped directory. */
255 __u16 ldo_dir_stripe_count;
256 /* How many stripes allocated for a striped directory */
257 __u16 ldo_dir_stripes_allocated;
258 __u32 ldo_dir_stripe_offset;
259 __u32 ldo_dir_hash_type;
260 __u32 ldo_dir_migrate_offset;
261 __u32 ldo_dir_migrate_hash;
262 __u32 ldo_dir_layout_version;
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;
269 * This default LMV is parent default LMV, which will be
270 * used in child creation, and it's not cached, so this
271 * field is invalid after create, make sure it's used by
272 * lod_dir_striping_create_internal() only.
274 struct lod_default_striping *ldo_def_striping;
279 /* foreign/raw format LOV */
280 char *ldo_foreign_lov;
281 size_t ldo_foreign_lov_size;
284 /* foreign/raw format LMV */
285 char *ldo_foreign_lmv;
286 size_t ldo_foreign_lmv_size;
289 /* file stripe (LOV) */
290 struct lod_layout_component *ldo_comp_entries;
291 /* slave stripes of striped directory (LMV) */
292 struct dt_object **ldo_stripe;
297 #define ldo_dir_split_offset ldo_dir_migrate_offset
298 #define ldo_dir_split_hash ldo_dir_migrate_hash
300 #define lod_foreach_mirror_comp(comp, lo, mirror_idx) \
301 for (comp = &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_start]; \
302 comp <= &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_end]; \
305 static inline bool lod_is_flr(const struct lod_object *lo)
307 if (!lo->ldo_is_composite)
310 return (lo->ldo_flr_state & LCM_FL_FLR_MASK) != LCM_FL_NONE;
313 static inline bool lod_is_splitting(const struct lod_object *lo)
315 return lmv_hash_is_splitting(lo->ldo_dir_hash_type);
318 static inline bool lod_is_migrating(const struct lod_object *lo)
320 return lmv_hash_is_migrating(lo->ldo_dir_hash_type);
323 static inline bool lod_is_layout_changing(const struct lod_object *lo)
325 return lmv_hash_is_layout_changing(lo->ldo_dir_hash_type);
328 static inline int lod_set_pool(char **pool, const char *new_pool)
332 if (*pool == new_pool)
336 len = strlen(*pool) + 1;
337 OBD_FREE(*pool, len);
340 if (new_pool != NULL) {
341 len = strlen(new_pool) + 1;
342 OBD_ALLOC(*pool, len);
345 strlcpy(*pool, new_pool, len);
350 static inline int lod_obj_set_pool(struct lod_object *lo, int i,
351 const char *new_pool)
353 return lod_set_pool(&lo->ldo_comp_entries[i].llc_pool, new_pool);
357 * Create new layout generation.
359 * The only requirement for layout generation is that it changes when
360 * the layout is modified, so a circular counter is sufficient for the
361 * low rate of layout modifications.
363 * Layout generation is also used to generate unique component ID.
364 * To detect generation overflow, we preserve the highest bit of the
365 * generation when it wrapped.
367 static inline void lod_obj_inc_layout_gen(struct lod_object *lo)
369 __u32 preserve = lo->ldo_layout_gen & ~LCME_ID_MASK;
370 lo->ldo_layout_gen++;
371 lo->ldo_layout_gen |= preserve;
372 /* Zero is not a valid generation */
373 if (unlikely((lo->ldo_layout_gen & LCME_ID_MASK) == 0)) {
374 lo->ldo_layout_gen++;
375 lo->ldo_layout_gen &= ~LU_LAYOUT_RESYNC;
380 struct dt_object *lit_obj; /* object from the layer below */
381 /* stripe offset of iteration */
382 __u32 lit_stripe_index;
384 struct dt_it *lit_it; /* iterator from the layer below */
387 struct lod_thread_info {
388 /* per-thread buffer for LOV EA, may be vmalloc'd */
390 __u32 lti_ea_store_size;
391 /* per-thread buffer for LMV EA */
392 struct lu_buf lti_buf;
393 struct ost_id lti_ostid;
394 struct lu_fid lti_fid;
395 struct obd_statfs lti_osfs;
396 struct lu_attr lti_attr;
397 struct lod_it lti_it;
398 struct ldlm_res_id lti_res_id;
399 /* used to hold lu_dirent, sizeof(struct lu_dirent) + NAME_MAX */
400 char lti_key[sizeof(struct lu_dirent) +
402 struct dt_object_format lti_format;
403 struct lu_name lti_name;
404 struct lu_buf lti_linkea_buf;
405 struct dt_insert_rec lti_dt_rec;
406 struct llog_catid lti_cid;
407 struct llog_cookie lti_cookie;
408 struct lustre_cfg lti_lustre_cfg;
409 /* used to store parent default striping in create */
410 struct lod_default_striping lti_def_striping;
411 struct filter_fid lti_ff;
413 size_t lti_comp_size;
415 struct lu_attr lti_layout_attr;
416 /* object allocation avoid guide info */
417 struct lod_avoid_guide lti_avoid;
418 union lmv_mds_md lti_lmv;
419 struct dt_allocation_hint lti_ah;
422 extern const struct lu_device_operations lod_lu_ops;
424 static inline int lu_device_is_lod(struct lu_device *d)
426 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &lod_lu_ops);
429 static inline struct lod_device* lu2lod_dev(struct lu_device *d)
431 LASSERT(lu_device_is_lod(d));
432 return container_of_safe(d, struct lod_device, lod_dt_dev.dd_lu_dev);
435 static inline struct lu_device *lod2lu_dev(struct lod_device *d)
437 return &d->lod_dt_dev.dd_lu_dev;
440 static inline struct obd_device *lod2obd(struct lod_device *d)
442 return d->lod_dt_dev.dd_lu_dev.ld_obd;
445 static inline struct lod_device *dt2lod_dev(struct dt_device *d)
447 LASSERT(lu_device_is_lod(&d->dd_lu_dev));
448 return container_of(d, struct lod_device, lod_dt_dev);
451 static inline struct lod_object *lu2lod_obj(struct lu_object *o)
453 LASSERT(ergo(o != NULL, lu_device_is_lod(o->lo_dev)));
454 return container_of_safe(o, struct lod_object, ldo_obj.do_lu);
457 static inline struct lu_object *lod2lu_obj(struct lod_object *obj)
459 return &obj->ldo_obj.do_lu;
462 static inline const struct lu_fid *lod_object_fid(struct lod_object *obj)
464 return lu_object_fid(lod2lu_obj(obj));
467 static inline struct lod_object *lod_obj(const struct lu_object *o)
469 LASSERT(lu_device_is_lod(o->lo_dev));
470 return container_of(o, struct lod_object, ldo_obj.do_lu);
473 static inline struct lod_object *lod_dt_obj(const struct dt_object *d)
475 return lod_obj(&d->do_lu);
478 static inline struct dt_object* lod_object_child(struct lod_object *o)
480 return container_of(lu_object_next(lod2lu_obj(o)),
481 struct dt_object, do_lu);
484 static inline bool lod_obj_is_striped(struct dt_object *dt)
486 struct lod_object *lo = lod_dt_obj(dt);
490 if (!dt_object_exists(dt_object_child(dt)))
493 mutex_lock(&lo->ldo_layout_mutex);
495 if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
496 rc = lo->ldo_dir_stripe_count != 0;
497 } else if (lo->ldo_is_foreign) {
500 for (i = 0; i < lo->ldo_comp_cnt; i++) {
501 if (lo->ldo_comp_entries[i].llc_stripe == NULL)
503 LASSERT(lo->ldo_comp_entries[i].llc_stripe_count > 0);
509 mutex_unlock(&lo->ldo_layout_mutex);
513 extern struct lu_context_key lod_thread_key;
515 static inline struct lod_thread_info *lod_env_info(const struct lu_env *env)
517 struct lod_thread_info *info;
518 info = lu_context_key_get(&env->le_ctx, &lod_thread_key);
523 static inline struct lu_name *
524 lod_name_get(const struct lu_env *env, const void *area, int len)
526 struct lu_name *lname;
528 lname = &lod_env_info(env)->lti_name;
529 lname->ln_name = area;
530 lname->ln_namelen = len;
534 static inline struct lod_default_striping *
535 lod_lds_buf_get(const struct lu_env *env)
537 struct lod_thread_info *info = lod_env_info(env);
539 info->lti_def_striping.lds_def_striping_set = 0;
540 info->lti_def_striping.lds_dir_def_striping_set = 0;
541 return &info->lti_def_striping;
544 static inline void lod_layout_get_pool(struct lod_layout_component *entries,
545 int count, char *pool, int len)
549 for (i = 0; i < count; i++) {
550 if (entries[i].llc_pool != NULL) {
551 strlcpy(pool, entries[i].llc_pool, len);
557 #define lod_foreach_mdt(lod, mdt) ltd_foreach_tgt(&(lod)->lod_mdt_descs, mdt)
558 #define lod_foreach_ost(lod, ost) ltd_foreach_tgt(&(lod)->lod_ost_descs, ost)
561 extern struct kmem_cache *lod_object_kmem;
562 int lod_fld_lookup(const struct lu_env *env, struct lod_device *lod,
563 const struct lu_fid *fid, __u32 *tgt, int *flags);
564 int lod_sub_init_llog(const struct lu_env *env, struct lod_device *lod,
565 struct dt_device *dt);
566 void lod_sub_fini_llog(const struct lu_env *env,
567 struct dt_device *dt, struct task_struct **taskp);
568 int lodname2mdt_index(char *lodname, __u32 *mdt_index);
569 extern void target_recovery_fini(struct obd_device *obd);
572 void lod_getref(struct lod_tgt_descs *ltd);
573 void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd);
574 int lod_add_device(const struct lu_env *env, struct lod_device *lod,
575 char *osp, unsigned index, unsigned gen, int mdt_index,
576 char *type, int active);
577 int lod_del_device(const struct lu_env *env, struct lod_device *lod,
578 struct lod_tgt_descs *ltd, char *osp, unsigned int idx,
580 int validate_lod_and_idx(struct lod_device *lod, __u32 idx);
581 int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
582 struct lod_tgt_descs *ltd);
583 int lod_striping_load(const struct lu_env *env, struct lod_object *lo);
584 int lod_striping_reload(const struct lu_env *env, struct lod_object *lo,
585 const struct lu_buf *buf, enum layout_verify_flags lvf);
586 void lod_dom_stripesize_recalc(struct lod_device *d);
588 int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
591 lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
593 return lod_get_ea(env, lo, XATTR_NAME_LOV);
597 lod_get_lmv_ea(const struct lu_env *env, struct lod_object *lo)
599 return lod_get_ea(env, lo, XATTR_NAME_LMV);
603 lod_get_default_lmv_ea(const struct lu_env *env, struct lod_object *lo)
605 return lod_get_ea(env, lo, XATTR_NAME_DEFAULT_LMV);
609 lod_comp_set_init(struct lod_layout_component *entry)
611 entry->llc_flags |= LCME_FL_INIT;
615 lod_comp_unset_init(struct lod_layout_component *entry)
617 entry->llc_flags &= ~LCME_FL_INIT;
621 lod_comp_inited(const struct lod_layout_component *entry)
623 return entry->llc_flags & LCME_FL_INIT;
627 * For a PFL file, some of its component could be un-instantiated, so
628 * that their lov_ost_data_v1 array is not needed, we'd use this function
629 * to reduce the LOVEA buffer size.
631 * Note: if llc_ostlist contains value, we'd need lov_ost_data_v1 array to
632 * save the specified OST index list.
635 lod_comp_shrink_stripe_count(struct lod_layout_component *lod_comp,
639 * Need one lov_ost_data_v1 to store invalid ost_idx, please refer to
640 * lod_parse_striping()
642 if (!lod_comp_inited(lod_comp) && lod_comp->llc_ostlist.op_count == 0)
646 void lod_fix_desc(struct lov_desc *desc);
647 void lod_fix_desc_qos_maxage(__u32 *val);
648 void lod_fix_desc_pattern(__u32 *val);
649 void lod_fix_desc_stripe_count(__u32 *val);
650 void lod_fix_desc_stripe_size(__u64 *val);
651 void lod_fix_lmv_desc_pattern(__u32 *val);
652 int lod_pools_init(struct lod_device *m, struct lustre_cfg *cfg);
653 int lod_pools_fini(struct lod_device *m);
654 int lod_parse_striping(const struct lu_env *env, struct lod_object *mo,
655 const struct lu_buf *buf, enum layout_verify_flags lvf);
656 int lod_parse_dir_striping(const struct lu_env *env, struct lod_object *lo,
657 const struct lu_buf *buf);
658 int lod_initialize_objects(const struct lu_env *env, struct lod_object *mo,
659 struct lov_ost_data_v1 *objs, int index);
660 int lod_verify_striping(const struct lu_env *env, struct lod_device *d,
661 struct lod_object *lo, const struct lu_buf *buf,
663 int lod_generate_lovea(const struct lu_env *env, struct lod_object *lo,
664 struct lov_mds_md *lmm, int *lmm_size, bool is_dir);
665 int lod_ea_store_resize(struct lod_thread_info *info, size_t size);
666 int lod_def_striping_comp_resize(struct lod_default_striping *lds, __u16 count);
667 void lod_free_def_comp_entries(struct lod_default_striping *lds);
668 void lod_free_comp_entries(struct lod_object *lo);
669 int lod_alloc_comp_entries(struct lod_object *lo, int mirror_cnt, int comp_cnt);
670 int lod_fill_mirrors(struct lod_object *lo);
673 struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname);
674 void lod_pool_putref(struct pool_desc *pool);
675 int lod_pool_del(struct obd_device *obd, char *poolname);
676 int lod_check_index_in_pool(__u32 idx, struct pool_desc *pool);
677 int lod_pool_new(struct obd_device *obd, char *poolname);
678 int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname);
679 int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
681 struct lod_obj_stripe_cb_data;
682 typedef int (*lod_obj_stripe_cb_t)(const struct lu_env *env,
683 struct lod_object *lo, struct dt_object *dt,
685 int comp_idx, int stripe_idx,
686 struct lod_obj_stripe_cb_data *data);
687 typedef bool (*lod_obj_comp_skip_cb_t)(const struct lu_env *env,
688 struct lod_object *lo, int comp_idx,
689 struct lod_obj_stripe_cb_data *data);
690 typedef int (*lod_obj_comp_cb_t)(const struct lu_env *env,
691 struct lod_object *lo, int comp_idx,
692 struct lod_obj_stripe_cb_data *data);
693 struct lod_obj_stripe_cb_data {
695 const struct lu_attr *locd_attr;
697 const struct lu_buf *locd_buf;
699 lod_obj_stripe_cb_t locd_stripe_cb;
700 lod_obj_comp_skip_cb_t locd_comp_skip_cb;
701 lod_obj_comp_cb_t locd_comp_cb;
706 int lod_mdt_alloc_qos(const struct lu_env *env, struct lod_object *lo,
707 struct dt_object **stripes, u32 stripe_idx,
709 int lod_mdt_alloc_rr(const struct lu_env *env, struct lod_object *lo,
710 struct dt_object **stripes, u32 stripe_idx,
712 int lod_prepare_create(const struct lu_env *env, struct lod_object *lo,
713 struct lu_attr *attr, const struct lu_buf *buf,
715 int lod_use_defined_striping(const struct lu_env *, struct lod_object *,
716 const struct lu_buf *);
717 int lod_qos_parse_config(const struct lu_env *env, struct lod_object *lo,
718 const struct lu_buf *buf);
719 int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
720 struct lu_attr *attr, struct thandle *th,
721 int comp_idx, __u64 reserve);
722 __u16 lod_comp_entry_stripe_count(struct lod_object *lo,
723 int comp_idx, bool is_dir);
724 __u16 lod_get_stripe_count_plain(struct lod_device *lod, struct lod_object *lo,
725 __u16 stripe_count, bool overstriping,
726 enum lod_uses_hint *flags);
727 __u16 lod_get_stripe_count(struct lod_device *lod, struct lod_object *lo,
728 int comp_idx, __u16 stripe_count, bool overstriping,
729 enum lod_uses_hint *flags);
730 void lod_qos_statfs_update(const struct lu_env *env, struct lod_device *lod,
731 struct lu_tgt_descs *ltd);
734 int lod_procfs_init(struct lod_device *lod);
735 void lod_procfs_fini(struct lod_device *lod);
738 extern const struct dt_object_operations lod_obj_ops;
739 extern const struct lu_object_operations lod_lu_obj_ops;
741 int lod_load_lmv_shards(const struct lu_env *env, struct lod_object *lo,
742 struct lu_buf *buf, bool resize);
743 int lod_declare_striped_create(const struct lu_env *env, struct dt_object *dt,
744 struct lu_attr *attr,
745 const struct lu_buf *lovea, struct thandle *th);
746 int lod_striped_create(const struct lu_env *env, struct dt_object *dt,
747 struct lu_attr *attr, struct dt_object_format *dof,
749 int lod_alloc_foreign_lov(struct lod_object *lo, size_t size);
750 void lod_free_foreign_lov(struct lod_object *lo);
751 void lod_striping_free_nolock(const struct lu_env *env, struct lod_object *lo);
752 void lod_striping_free(const struct lu_env *env, struct lod_object *lo);
754 int lod_obj_for_each_stripe(const struct lu_env *env, struct lod_object *lo,
756 struct lod_obj_stripe_cb_data *data);
757 int lod_comp_copy_ost_lists(struct lod_layout_component *lod_comp,
758 struct lov_user_md_v3 *v3);
759 void lod_adjust_stripe_size(struct lod_layout_component *comp,
760 __u32 def_stripe_size);
762 /* lod_sub_object.c */
763 struct thandle *lod_sub_get_thandle(const struct lu_env *env,
765 const struct dt_object *sub_obj,
766 bool *record_update);
767 int lod_sub_declare_create(const struct lu_env *env, struct dt_object *dt,
768 struct lu_attr *attr,
769 struct dt_allocation_hint *hint,
770 struct dt_object_format *dof, struct thandle *th);
771 int lod_sub_create(const struct lu_env *env, struct dt_object *dt,
772 struct lu_attr *attr, struct dt_allocation_hint *hint,
773 struct dt_object_format *dof, struct thandle *th);
774 int lod_sub_declare_ref_add(const struct lu_env *env, struct dt_object *dt,
776 int lod_sub_ref_add(const struct lu_env *env, struct dt_object *dt,
778 int lod_sub_declare_ref_del(const struct lu_env *env, struct dt_object *dt,
780 int lod_sub_ref_del(const struct lu_env *env, struct dt_object *dt,
782 int lod_sub_declare_destroy(const struct lu_env *env, struct dt_object *dt,
784 int lod_sub_destroy(const struct lu_env *env, struct dt_object *dt,
786 int lod_sub_declare_insert(const struct lu_env *env, struct dt_object *dt,
787 const struct dt_rec *rec, const struct dt_key *key,
789 int lod_sub_insert(const struct lu_env *env, struct dt_object *dt,
790 const struct dt_rec *rec, const struct dt_key *key,
792 int lod_sub_declare_delete(const struct lu_env *env, struct dt_object *dt,
793 const struct dt_key *key, struct thandle *th);
794 int lod_sub_delete(const struct lu_env *env, struct dt_object *dt,
795 const struct dt_key *name, struct thandle *th);
796 int lod_sub_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
797 const struct lu_buf *buf, const char *name,
798 int fl, struct thandle *th);
799 int lod_sub_xattr_set(const struct lu_env *env, struct dt_object *dt,
800 const struct lu_buf *buf, const char *name, int fl,
802 int lod_sub_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
803 const struct lu_attr *attr, struct thandle *th);
804 int lod_sub_attr_set(const struct lu_env *env, struct dt_object *dt,
805 const struct lu_attr *attr, struct thandle *th);
806 int lod_sub_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
807 const char *name, struct thandle *th);
808 int lod_sub_xattr_del(const struct lu_env *env, struct dt_object *dt,
809 const char *name, struct thandle *th);
810 int lod_sub_declare_write(const struct lu_env *env, struct dt_object *dt,
811 const struct lu_buf *buf, loff_t pos,
813 ssize_t lod_sub_write(const struct lu_env *env, struct dt_object *dt,
814 const struct lu_buf *buf, loff_t *pos,
816 int lod_sub_declare_punch(const struct lu_env *env, struct dt_object *dt,
817 __u64 start, __u64 end, struct thandle *th);
818 int lod_sub_punch(const struct lu_env *env, struct dt_object *dt,
819 __u64 start, __u64 end, struct thandle *th);
821 int lod_sub_prep_llog(const struct lu_env *env, struct lod_device *lod,
822 struct dt_device *dt, int index);
823 void lod_check_and_spill_pool(const struct lu_env *env, struct lod_device *lod,
825 void lod_spill_target_refresh(const struct lu_env *env, struct lod_device *lod,
826 struct pool_desc *pool);
827 struct pool_desc *lod_pool_find(struct lod_device *lod, char *poolname);
828 int lod_tgt_weights_seq_show(struct seq_file *m, struct lod_device *lod,
829 struct lu_tgt_pool *tgts, bool mdt);
830 int lod_tgt_weights_seq_write(struct seq_file *m, const char __user *buf,
831 size_t count, struct lod_device *lod,
832 struct lu_tgt_pool *tgts, bool is_mdt);
833 extern struct lprocfs_vars lprocfs_lod_spill_vars[];