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 spinlock_t lqr_alloc; /* protect allocation index */
59 __u32 lqr_start_idx; /* start index of new inode */
60 __u32 lqr_offset_idx;/* aliasing for start_idx */
61 int lqr_start_count;/* reseed counter */
62 struct ost_pool lqr_pool; /* round-robin optimized list */
63 unsigned long lqr_dirty:1; /* recalc round-robin list */
67 char pool_name[LOV_MAXPOOLNAME + 1];
68 struct ost_pool pool_obds; /* pool members */
69 atomic_t pool_refcount;
70 struct lod_qos_rr pool_rr;
71 struct hlist_node pool_hash; /* access by poolname */
72 struct list_head pool_list;
73 struct proc_dir_entry *pool_proc_entry;
74 struct obd_device *pool_lobd; /* owner */
77 #define pool_tgt_count(p) ((p)->pool_obds.op_count)
78 #define pool_tgt_array(p) ((p)->pool_obds.op_array)
79 #define pool_tgt_rw_sem(p) ((p)->pool_obds.op_rw_sem)
82 struct list_head lq_oss_list;
83 struct rw_semaphore lq_rw_sem;
84 __u32 lq_active_oss_count;
85 unsigned int lq_prio_free; /* priority for free space */
86 unsigned int lq_threshold_rr;/* priority for rr */
87 struct lod_qos_rr lq_rr; /* round robin qos data */
88 bool lq_dirty:1, /* recalc qos data */
89 lq_same_space:1,/* the ost's all have approx.
90 the same space avail */
91 lq_reset:1; /* zero current penalties */
95 struct obd_uuid lqo_uuid; /* ptlrpc's c_remote_uuid */
96 struct list_head lqo_oss_list; /* link to lov_qos */
97 __u64 lqo_bavail; /* total bytes avail on OSS */
98 __u64 lqo_penalty; /* current penalty */
99 __u64 lqo_penalty_per_obj; /* penalty decrease
101 time64_t lqo_used; /* last used time, seconds */
102 __u32 lqo_ost_count; /* number of osts on this oss */
103 __u32 lqo_id; /* unique oss id */
107 struct lod_qos_oss *ltq_oss; /* oss info */
108 __u64 ltq_penalty; /* current penalty */
109 __u64 ltq_penalty_per_obj; /* penalty decrease
111 __u64 ltq_weight; /* net weighting */
112 time64_t ltq_used; /* last used time, seconds */
113 bool ltq_usable:1; /* usable for striping */
116 struct lod_tgt_desc {
117 struct dt_device *ltd_tgt;
118 struct list_head ltd_kill;
119 struct obd_export *ltd_exp;
120 struct obd_uuid ltd_uuid;
123 struct ltd_qos ltd_qos; /* qos info per target */
124 struct obd_statfs ltd_statfs;
125 struct ptlrpc_thread *ltd_recovery_thread;
126 unsigned long ltd_active:1,/* is this target up for requests */
127 ltd_activate:1,/* should target be activated */
128 ltd_reap:1, /* should this target be deleted */
129 ltd_got_update_log:1, /* Already got update log */
130 ltd_connecting:1; /* target is connecting */
133 #define TGT_PTRS 256 /* number of pointers at 1st level */
134 #define TGT_PTRS_PER_BLOCK 256 /* number of pointers at 2nd level */
136 struct lod_tgt_desc_idx {
137 struct lod_tgt_desc *ldi_tgt[TGT_PTRS_PER_BLOCK];
140 #define LTD_TGT(ltd, index) \
141 ((ltd)->ltd_tgt_idx[(index) / \
142 TGT_PTRS_PER_BLOCK]->ldi_tgt[(index) % TGT_PTRS_PER_BLOCK])
144 #define OST_TGT(lod, index) LTD_TGT(&lod->lod_ost_descs, index)
145 #define MDT_TGT(lod, index) LTD_TGT(&lod->lod_mdt_descs, index)
146 struct lod_tgt_descs {
147 /* list of known TGTs */
148 struct lod_tgt_desc_idx *ltd_tgt_idx[TGT_PTRS];
149 /* Size of the lod_tgts array, granted to be a power of 2 */
151 /* number of registered TGTs */
153 /* bitmap of TGTs available */
154 struct cfs_bitmap *ltd_tgt_bitmap;
155 /* TGTs scheduled to be deleted */
157 /* Table refcount used for delayed deletion */
159 /* mutex to serialize concurrent updates to the tgt table */
160 struct mutex ltd_mutex;
161 /* read/write semaphore used for array relocation */
162 struct rw_semaphore ltd_rw_sem;
165 struct lod_avoid_guide {
166 /* ids of OSSs avoid guidance */
167 __u32 *lag_oss_avoid_array;
168 /* number of filled array items */
169 unsigned int lag_oaa_count;
170 /* number of allocated array items */
171 unsigned int lag_oaa_size;
172 /* bitmap of OSTs avoid guidance */
173 struct cfs_bitmap *lag_ost_avoid_bitmap;
174 /* how many OSTs are available for alloc */
179 struct dt_device lod_dt_dev;
180 struct obd_export *lod_child_exp;
181 struct dt_device *lod_child;
182 struct lprocfs_stats *lod_stats;
183 spinlock_t lod_connects_lock;
185 unsigned int lod_recovery_completed:1,
188 lod_child_got_update_log:1;
190 /* lov settings descriptor storing static information */
191 struct lov_desc lod_desc;
193 /* protect ld_active_tgt_count, ltd_active and lod_md_root */
196 /* Description of OST */
197 struct lod_tgt_descs lod_ost_descs;
198 /* Description of MDT */
199 struct lod_tgt_descs lod_mdt_descs;
201 /* Recovery thread for lod_child */
202 struct ptlrpc_thread lod_child_recovery_thread;
204 /* maximum EA size underlied OSD may have */
205 unsigned int lod_osd_max_easize;
206 /* maximum size of MDT stripe for Data-on-MDT files. */
207 unsigned int lod_dom_max_stripesize;
209 /*FIXME: When QOS and pool is implemented for MDT, probably these
210 * structure should be moved to lod_tgt_descs as well.
212 /* QoS info per LOD */
213 struct lod_qos lod_qos; /* qos info per lod */
216 struct ost_pool lod_pool_info; /* all OSTs in a packed array */
218 struct cfs_hash *lod_pools_hash_body; /* used for key access */
219 struct list_head lod_pool_list; /* used for sequential access */
220 struct proc_dir_entry *lod_pool_proc_entry;
222 enum lustre_sec_part lod_sp_me;
224 struct proc_dir_entry *lod_symlink;
225 struct dentry *lod_debugfs;
227 /* ROOT object, used to fetch FS default striping */
228 struct lod_object *lod_md_root;
231 #define lod_osts lod_ost_descs.ltd_tgts
232 #define lod_ost_bitmap lod_ost_descs.ltd_tgt_bitmap
233 #define lod_ostnr lod_ost_descs.ltd_tgtnr
234 #define lod_osts_size lod_ost_descs.ltd_tgts_size
235 #define ltd_ost ltd_tgt
236 #define lod_ost_desc lod_tgt_desc
238 #define lod_mdts lod_mdt_descs.ltd_tgts
239 #define lod_mdt_bitmap lod_mdt_descs.ltd_tgt_bitmap
240 #define lod_remote_mdt_count lod_mdt_descs.ltd_tgtnr
241 #define lod_mdts_size lod_mdt_descs.ltd_tgts_size
242 #define ltd_mdt ltd_tgt
243 #define lod_mdt_desc lod_tgt_desc
245 struct lod_layout_component {
246 struct lu_extent llc_extent;
249 __u32 llc_stripe_size;
251 __u16 llc_layout_gen;
252 __u16 llc_stripe_offset;
253 __u16 llc_stripe_count;
254 __u16 llc_stripes_allocated;
255 __u64 llc_timestamp; /* snapshot time */
257 /* ost list specified with LOV_USER_MAGIC_SPECIFIC lum */
258 struct ost_pool llc_ostlist;
259 struct dt_object **llc_stripe;
260 __u32 *llc_ost_indices;
263 struct lod_default_striping {
265 /* current layout component count */
266 __u16 lds_def_comp_cnt;
267 __u16 lds_def_mirror_cnt;
268 /* the largest comp count ever used */
269 __u32 lds_def_comp_size_cnt;
270 struct lod_layout_component *lds_def_comp_entries;
272 __u32 lds_dir_def_stripe_count;
273 __u32 lds_dir_def_stripe_offset;
274 __u32 lds_dir_def_hash_type;
275 /* default file striping flags (LOV) */
276 __u32 lds_def_striping_set:1,
277 lds_def_striping_is_composite:1,
278 /* default dir striping flags (LMV) */
279 lds_dir_def_striping_set:1;
282 struct lod_mirror_entry {
287 /* start,end index of this mirror in ldo_comp_entries */
293 /* common fields for both files and directories */
294 struct dt_object ldo_obj;
295 struct mutex ldo_layout_mutex;
297 /* file stripe (LOV) */
299 __u32 ldo_layout_gen;
300 /* Layout component count for a regular file.
301 * It equals to 1 for non-composite layout. */
303 /* Layout mirror count for a PFLR file.
304 * It's 0 for files with non-composite layout. */
305 __u16 ldo_mirror_count;
306 struct lod_mirror_entry *ldo_mirrors;
307 __u32 ldo_is_composite:1,
312 /* directory stripe (LMV) */
314 /* Slave stripe count for striped directory. */
315 __u16 ldo_dir_stripe_count;
316 /* How many stripes allocated for a striped directory */
317 __u16 ldo_dir_stripes_allocated;
318 __u32 ldo_dir_stripe_offset;
319 __u32 ldo_dir_hash_type;
320 __u32 ldo_dir_migrate_offset;
321 __u32 ldo_dir_migrate_hash;
322 /* Is a slave stripe of striped directory? */
323 __u32 ldo_dir_slave_stripe:1,
325 /* the stripe has been loaded */
326 ldo_dir_stripe_loaded:1,
327 /* foreign directory */
330 * default striping is not cached, so this field is
331 * invalid after create, make sure it's used by
332 * lod_dir_striping_create_internal() only.
334 struct lod_default_striping *ldo_def_striping;
339 /* foreign/raw format LOV */
340 char *ldo_foreign_lov;
341 size_t ldo_foreign_lov_size;
344 /* foreign/raw format LMV */
345 char *ldo_foreign_lmv;
346 size_t ldo_foreign_lmv_size;
349 /* file stripe (LOV) */
350 struct lod_layout_component *ldo_comp_entries;
351 /* slave stripes of striped directory (LMV) */
352 struct dt_object **ldo_stripe;
357 #define lod_foreach_mirror_comp(comp, lo, mirror_idx) \
358 for (comp = &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_start]; \
359 comp <= &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_end]; \
362 static inline bool lod_is_flr(const struct lod_object *lo)
364 if (!lo->ldo_is_composite)
367 return (lo->ldo_flr_state & LCM_FL_FLR_MASK) != LCM_FL_NONE;
370 static inline int lod_set_pool(char **pool, const char *new_pool)
374 if (*pool == new_pool)
378 len = strlen(*pool) + 1;
379 OBD_FREE(*pool, len);
382 if (new_pool != NULL) {
383 len = strlen(new_pool) + 1;
384 OBD_ALLOC(*pool, len);
387 strlcpy(*pool, new_pool, len);
392 static inline int lod_set_def_pool(struct lod_default_striping *lds,
393 int i, const char *new_pool)
395 return lod_set_pool(&lds->lds_def_comp_entries[i].llc_pool, new_pool);
398 static inline int lod_obj_set_pool(struct lod_object *lo, int i,
399 const char *new_pool)
401 return lod_set_pool(&lo->ldo_comp_entries[i].llc_pool, new_pool);
405 * Create new layout generation.
407 * The only requirement for layout generation is that it changes when
408 * the layout is modified, so a circular counter is sufficient for the
409 * low rate of layout modifications.
411 * Layout generation is also used to generate unique component ID.
412 * To detect generation overflow, we preserve the highest bit of the
413 * generation when it wrapped.
415 static inline void lod_obj_inc_layout_gen(struct lod_object *lo)
417 __u32 preserve = lo->ldo_layout_gen & ~LCME_ID_MASK;
418 lo->ldo_layout_gen++;
419 lo->ldo_layout_gen |= preserve;
420 /* Zero is not a valid generation */
421 if (unlikely((lo->ldo_layout_gen & LCME_ID_MASK) == 0))
422 lo->ldo_layout_gen++;
426 struct dt_object *lit_obj; /* object from the layer below */
427 /* stripe offset of iteration */
428 __u32 lit_stripe_index;
430 struct dt_it *lit_it; /* iterator from the layer below */
433 struct lod_thread_info {
434 /* per-thread buffer for LOV EA, may be vmalloc'd */
436 __u32 lti_ea_store_size;
437 /* per-thread buffer for LMV EA */
438 struct lu_buf lti_buf;
439 struct ost_id lti_ostid;
440 struct lu_fid lti_fid;
441 struct obd_statfs lti_osfs;
442 struct lu_attr lti_attr;
443 struct lod_it lti_it;
444 struct ldlm_res_id lti_res_id;
445 /* used to hold lu_dirent, sizeof(struct lu_dirent) + NAME_MAX */
446 char lti_key[sizeof(struct lu_dirent) +
448 struct dt_object_format lti_format;
449 struct lu_name lti_name;
450 struct lu_buf lti_linkea_buf;
451 struct dt_insert_rec lti_dt_rec;
452 struct llog_catid lti_cid;
453 struct llog_cookie lti_cookie;
454 struct lustre_cfg lti_lustre_cfg;
455 /* used to store parent default striping in create */
456 struct lod_default_striping lti_def_striping;
457 struct filter_fid lti_ff;
459 size_t lti_comp_size;
461 struct lu_attr lti_layout_attr;
462 /* object allocation avoid guide info */
463 struct lod_avoid_guide lti_avoid;
466 extern const struct lu_device_operations lod_lu_ops;
468 static inline int lu_device_is_lod(struct lu_device *d)
470 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &lod_lu_ops);
473 static inline struct lod_device* lu2lod_dev(struct lu_device *d)
475 LASSERT(lu_device_is_lod(d));
476 return container_of0(d, struct lod_device, lod_dt_dev.dd_lu_dev);
479 static inline struct lu_device *lod2lu_dev(struct lod_device *d)
481 return &d->lod_dt_dev.dd_lu_dev;
484 static inline struct obd_device *lod2obd(struct lod_device *d)
486 return d->lod_dt_dev.dd_lu_dev.ld_obd;
489 static inline struct lod_device *dt2lod_dev(struct dt_device *d)
491 LASSERT(lu_device_is_lod(&d->dd_lu_dev));
492 return container_of0(d, struct lod_device, lod_dt_dev);
495 static inline struct lod_object *lu2lod_obj(struct lu_object *o)
497 LASSERT(ergo(o != NULL, lu_device_is_lod(o->lo_dev)));
498 return container_of0(o, struct lod_object, ldo_obj.do_lu);
501 static inline struct lu_object *lod2lu_obj(struct lod_object *obj)
503 return &obj->ldo_obj.do_lu;
506 static inline const struct lu_fid *lod_object_fid(struct lod_object *obj)
508 return lu_object_fid(lod2lu_obj(obj));
511 static inline struct lod_object *lod_obj(const struct lu_object *o)
513 LASSERT(lu_device_is_lod(o->lo_dev));
514 return container_of0(o, struct lod_object, ldo_obj.do_lu);
517 static inline struct lod_object *lod_dt_obj(const struct dt_object *d)
519 return lod_obj(&d->do_lu);
522 static inline struct dt_object* lod_object_child(struct lod_object *o)
524 return container_of0(lu_object_next(lod2lu_obj(o)),
525 struct dt_object, do_lu);
528 static inline bool lod_obj_is_striped(struct dt_object *dt)
530 struct lod_object *lo = lod_dt_obj(dt);
533 if (!dt_object_exists(dt_object_child(dt)))
536 if (S_ISDIR(dt->do_lu.lo_header->loh_attr))
537 return lo->ldo_dir_stripe_count != 0;
539 if (lo->ldo_is_foreign)
542 for (i = 0; i < lo->ldo_comp_cnt; i++) {
543 if (lo->ldo_comp_entries[i].llc_stripe == NULL)
545 LASSERT(lo->ldo_comp_entries[i].llc_stripe_count > 0);
551 extern struct lu_context_key lod_thread_key;
553 static inline struct lod_thread_info *lod_env_info(const struct lu_env *env)
555 struct lod_thread_info *info;
556 info = lu_context_key_get(&env->le_ctx, &lod_thread_key);
561 static inline struct lu_name *
562 lod_name_get(const struct lu_env *env, const void *area, int len)
564 struct lu_name *lname;
566 lname = &lod_env_info(env)->lti_name;
567 lname->ln_name = area;
568 lname->ln_namelen = len;
572 static inline struct lod_default_striping *
573 lod_lds_buf_get(const struct lu_env *env)
575 struct lod_thread_info *info = lod_env_info(env);
577 info->lti_def_striping.lds_def_striping_set = 0;
578 info->lti_def_striping.lds_dir_def_striping_set = 0;
579 return &info->lti_def_striping;
582 static inline void lod_layout_get_pool(struct lod_layout_component *entries,
583 int count, char *pool, int len)
587 for (i = 0; i < count; i++) {
588 if (entries[i].llc_pool != NULL) {
589 strlcpy(pool, entries[i].llc_pool, len);
595 #define lod_foreach_ost(__dev, index) \
596 if ((__dev)->lod_osts_size > 0) \
597 cfs_foreach_bit((__dev)->lod_ost_bitmap, (index))
599 #define lod_foreach_mdt(mdt_dev, index) \
600 cfs_foreach_bit((mdt_dev)->lod_mdt_bitmap, (index))
603 extern struct kmem_cache *lod_object_kmem;
604 int lod_fld_lookup(const struct lu_env *env, struct lod_device *lod,
605 const struct lu_fid *fid, __u32 *tgt, int *flags);
606 int lod_sub_init_llog(const struct lu_env *env, struct lod_device *lod,
607 struct dt_device *dt);
608 void lod_sub_fini_llog(const struct lu_env *env,
609 struct dt_device *dt, struct ptlrpc_thread *thread);
610 int lodname2mdt_index(char *lodname, __u32 *mdt_index);
611 extern void target_recovery_fini(struct obd_device *obd);
614 void lod_getref(struct lod_tgt_descs *ltd);
615 void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd);
616 int lod_add_device(const struct lu_env *env, struct lod_device *lod,
617 char *osp, unsigned index, unsigned gen, int mdt_index,
618 char *type, int active);
619 int lod_del_device(const struct lu_env *env, struct lod_device *lod,
620 struct lod_tgt_descs *ltd, char *osp, unsigned idx,
621 unsigned gen, bool for_ost);
622 int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
623 struct lod_tgt_descs *ltd, bool for_ost);
624 int lod_striping_load(const struct lu_env *env, struct lod_object *lo);
625 int lod_striping_reload(const struct lu_env *env, struct lod_object *lo,
626 const struct lu_buf *buf);
628 int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
631 lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
633 return lod_get_ea(env, lo, XATTR_NAME_LOV);
637 lod_get_lmv_ea(const struct lu_env *env, struct lod_object *lo)
639 return lod_get_ea(env, lo, XATTR_NAME_LMV);
643 lod_get_default_lmv_ea(const struct lu_env *env, struct lod_object *lo)
645 return lod_get_ea(env, lo, XATTR_NAME_DEFAULT_LMV);
649 lod_comp_set_init(struct lod_layout_component *entry)
651 entry->llc_flags |= LCME_FL_INIT;
655 lod_comp_unset_init(struct lod_layout_component *entry)
657 entry->llc_flags &= ~LCME_FL_INIT;
661 lod_comp_inited(const struct lod_layout_component *entry)
663 return entry->llc_flags & LCME_FL_INIT;
667 * For a PFL file, some of its component could be un-instantiated, so
668 * that their lov_ost_data_v1 array is not needed, we'd use this function
669 * to reduce the LOVEA buffer size.
671 * Note: if llc_ostlist contains value, we'd need lov_ost_data_v1 array to
672 * save the specified OST index list.
675 lod_comp_shrink_stripe_count(struct lod_layout_component *lod_comp,
679 * Need one lov_ost_data_v1 to store invalid ost_idx, please refer to
680 * lod_parse_striping()
682 if (!lod_comp_inited(lod_comp) && lod_comp->llc_ostlist.op_count == 0)
686 void lod_fix_desc(struct lov_desc *desc);
687 void lod_fix_desc_qos_maxage(__u32 *val);
688 void lod_fix_desc_pattern(__u32 *val);
689 void lod_fix_desc_stripe_count(__u32 *val);
690 void lod_fix_desc_stripe_size(__u64 *val);
691 int lod_pools_init(struct lod_device *m, struct lustre_cfg *cfg);
692 int lod_pools_fini(struct lod_device *m);
693 int lod_parse_striping(const struct lu_env *env, struct lod_object *mo,
694 const struct lu_buf *buf);
695 int lod_parse_dir_striping(const struct lu_env *env, struct lod_object *lo,
696 const struct lu_buf *buf);
697 int lod_initialize_objects(const struct lu_env *env, struct lod_object *mo,
698 struct lov_ost_data_v1 *objs, int index);
699 int lod_verify_striping(struct lod_device *d, struct lod_object *lo,
700 const struct lu_buf *buf, bool is_from_disk);
701 int lod_generate_lovea(const struct lu_env *env, struct lod_object *lo,
702 struct lov_mds_md *lmm, int *lmm_size, bool is_dir);
703 int lod_ea_store_resize(struct lod_thread_info *info, size_t size);
704 int lod_def_striping_comp_resize(struct lod_default_striping *lds, __u16 count);
705 void lod_free_def_comp_entries(struct lod_default_striping *lds);
706 void lod_free_comp_entries(struct lod_object *lo);
707 int lod_alloc_comp_entries(struct lod_object *lo, int mirror_cnt, int comp_cnt);
708 int lod_fill_mirrors(struct lod_object *lo);
711 int lod_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
712 int lod_ost_pool_remove(struct ost_pool *op, __u32 idx);
713 int lod_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
714 struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname);
715 void lod_pool_putref(struct pool_desc *pool);
716 int lod_ost_pool_free(struct ost_pool *op);
717 int lod_pool_del(struct obd_device *obd, char *poolname);
718 int lod_ost_pool_init(struct ost_pool *op, unsigned int count);
719 extern struct cfs_hash_ops pool_hash_operations;
720 int lod_check_index_in_pool(__u32 idx, struct pool_desc *pool);
721 int lod_pool_new(struct obd_device *obd, char *poolname);
722 int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname);
723 int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
725 struct lod_obj_stripe_cb_data;
726 typedef int (*lod_obj_stripe_cb_t)(const struct lu_env *env,
727 struct lod_object *lo, struct dt_object *dt,
729 int comp_idx, int stripe_idx,
730 struct lod_obj_stripe_cb_data *data);
731 typedef bool (*lod_obj_comp_skip_cb_t)(const struct lu_env *env,
732 struct lod_object *lo, int comp_idx,
733 struct lod_obj_stripe_cb_data *data);
734 typedef int (*lod_obj_comp_cb_t)(const struct lu_env *env,
735 struct lod_object *lo, int comp_idx,
736 struct lod_obj_stripe_cb_data *data);
737 struct lod_obj_stripe_cb_data {
739 const struct lu_attr *locd_attr;
741 const struct lu_buf *locd_buf;
743 lod_obj_stripe_cb_t locd_stripe_cb;
744 lod_obj_comp_skip_cb_t locd_comp_skip_cb;
745 lod_obj_comp_cb_t locd_comp_cb;
750 int lod_prepare_create(const struct lu_env *env, struct lod_object *lo,
751 struct lu_attr *attr, const struct lu_buf *buf,
753 int qos_add_tgt(struct lod_device*, struct lod_tgt_desc *);
754 int qos_del_tgt(struct lod_device *, struct lod_tgt_desc *);
755 void lod_qos_rr_init(struct lod_qos_rr *lqr);
756 int lod_use_defined_striping(const struct lu_env *, struct lod_object *,
757 const struct lu_buf *);
758 int lod_qos_parse_config(const struct lu_env *env, struct lod_object *lo,
759 const struct lu_buf *buf);
760 int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
761 struct lu_attr *attr, struct thandle *th,
763 __u16 lod_comp_entry_stripe_count(struct lod_object *lo,
764 struct lod_layout_component *entry,
766 __u16 lod_get_stripe_count(struct lod_device *lod, struct lod_object *lo,
768 void lod_qos_statfs_update(const struct lu_env *env, struct lod_device *lod);
771 int lod_procfs_init(struct lod_device *lod);
772 void lod_procfs_fini(struct lod_device *lod);
775 extern struct dt_object_operations lod_obj_ops;
776 extern struct lu_object_operations lod_lu_obj_ops;
778 int lod_load_lmv_shards(const struct lu_env *env, struct lod_object *lo,
779 struct lu_buf *buf, bool resize);
780 int lod_declare_striped_create(const struct lu_env *env, struct dt_object *dt,
781 struct lu_attr *attr,
782 const struct lu_buf *lovea, struct thandle *th);
783 int lod_striped_create(const struct lu_env *env, struct dt_object *dt,
784 struct lu_attr *attr, struct dt_object_format *dof,
786 int lod_alloc_foreign_lov(struct lod_object *lo, size_t size);
787 void lod_free_foreign_lov(struct lod_object *lo);
788 void lod_striping_free_nolock(const struct lu_env *env, struct lod_object *lo);
789 void lod_striping_free(const struct lu_env *env, struct lod_object *lo);
791 int lod_obj_for_each_stripe(const struct lu_env *env, struct lod_object *lo,
793 struct lod_obj_stripe_cb_data *data);
794 int lod_comp_copy_ost_lists(struct lod_layout_component *lod_comp,
795 struct lov_user_md_v3 *v3);
797 /* lod_sub_object.c */
798 struct thandle *lod_sub_get_thandle(const struct lu_env *env,
800 const struct dt_object *sub_obj,
801 bool *record_update);
802 int lod_sub_declare_create(const struct lu_env *env, struct dt_object *dt,
803 struct lu_attr *attr,
804 struct dt_allocation_hint *hint,
805 struct dt_object_format *dof, struct thandle *th);
806 int lod_sub_create(const struct lu_env *env, struct dt_object *dt,
807 struct lu_attr *attr, struct dt_allocation_hint *hint,
808 struct dt_object_format *dof, struct thandle *th);
809 int lod_sub_declare_ref_add(const struct lu_env *env, struct dt_object *dt,
811 int lod_sub_ref_add(const struct lu_env *env, struct dt_object *dt,
813 int lod_sub_declare_ref_del(const struct lu_env *env, struct dt_object *dt,
815 int lod_sub_ref_del(const struct lu_env *env, struct dt_object *dt,
817 int lod_sub_declare_destroy(const struct lu_env *env, struct dt_object *dt,
819 int lod_sub_destroy(const struct lu_env *env, struct dt_object *dt,
821 int lod_sub_declare_insert(const struct lu_env *env, struct dt_object *dt,
822 const struct dt_rec *rec, const struct dt_key *key,
824 int lod_sub_insert(const struct lu_env *env, struct dt_object *dt,
825 const struct dt_rec *rec, const struct dt_key *key,
827 int lod_sub_declare_delete(const struct lu_env *env, struct dt_object *dt,
828 const struct dt_key *key, struct thandle *th);
829 int lod_sub_delete(const struct lu_env *env, struct dt_object *dt,
830 const struct dt_key *name, struct thandle *th);
831 int lod_sub_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
832 const struct lu_buf *buf, const char *name,
833 int fl, struct thandle *th);
834 int lod_sub_xattr_set(const struct lu_env *env, struct dt_object *dt,
835 const struct lu_buf *buf, const char *name, int fl,
837 int lod_sub_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
838 const struct lu_attr *attr, struct thandle *th);
839 int lod_sub_attr_set(const struct lu_env *env, struct dt_object *dt,
840 const struct lu_attr *attr, struct thandle *th);
841 int lod_sub_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
842 const char *name, struct thandle *th);
843 int lod_sub_xattr_del(const struct lu_env *env, struct dt_object *dt,
844 const char *name, struct thandle *th);
845 int lod_sub_declare_write(const struct lu_env *env, struct dt_object *dt,
846 const struct lu_buf *buf, loff_t pos,
848 ssize_t lod_sub_write(const struct lu_env *env, struct dt_object *dt,
849 const struct lu_buf *buf, loff_t *pos,
851 int lod_sub_declare_punch(const struct lu_env *env, struct dt_object *dt,
852 __u64 start, __u64 end, struct thandle *th);
853 int lod_sub_punch(const struct lu_env *env, struct dt_object *dt,
854 __u64 start, __u64 end, struct thandle *th);
856 int lod_sub_prep_llog(const struct lu_env *env, struct lod_device *lod,
857 struct dt_device *dt, int index);