Viewing: lod_internal.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
* Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*
* Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
* Author: Mikhail Pershin <mike.pershin@intel.com>
*/
#ifndef _LOD_INTERNAL_H
#define _LOD_INTERNAL_H
#include <uapi/linux/lustre/lustre_cfg.h>
#include <obd.h>
#include <dt_object.h>
enum lod_uses_hint {
LOD_USES_ASSIGNED_STRIPE = 0,
LOD_USES_DEFAULT_STRIPE,
};
/* Special values to remove LOV EA from disk */
#define LOVEA_DELETE_VALUES(size, count, offset, pool) \
((size) == 0 && (count) == 0 && \
(offset) == (typeof(offset))(-1) && (pool) == NULL)
#define LMVEA_DELETE_VALUES(count, offset) \
((count) == 0 && (offset) == (typeof(offset))(-1))
struct lod_pool_desc {
char pool_name[LOV_MAXPOOLNAME + 1];
struct lu_tgt_pool pool_obds; /* pool members */
struct kref pool_refcount;
struct lu_qos_rr pool_rr;
struct rhash_head pool_hash; /* access by poolname */
struct list_head pool_list;
struct rcu_head pool_rcu;
struct proc_dir_entry *pool_proc_entry;
struct obd_device *pool_lobd; /* owner */
time64_t pool_spill_expire;
struct proc_dir_entry *pool_spill_proc_entry;
bool pool_spill_is_active;
unsigned int pool_spill_threshold_pct;
atomic_t pool_spill_hit;
char pool_spill_target[LOV_MAXPOOLNAME + 1];
bool pool_same_space; /* targets in pool balanced*/
time64_t pool_same_space_expire; /*uses ld_qos_maxage*/
struct dentry *pool_debugfs;
};
struct lod_device;
int lod_pool_hash_init(struct rhashtable *tbl);
void lod_pool_hash_destroy(struct rhashtable *tbl);
bool lod_pool_exists(struct lod_device *lod, char *poolname);
#define pool_tgt_count(p) ((p)->pool_obds.op_count)
#define pool_tgt_array(p) ((p)->pool_obds.op_array)
#define pool_tgt_rw_sem(p) ((p)->pool_obds.op_rw_sem)
#define lod_tgt_desc lu_tgt_desc
#define lod_tgt_descs lu_tgt_descs
#define OST_TGT(lod, index) LTD_TGT(&lod->lod_ost_descs, index)
#define MDT_TGT(lod, index) LTD_TGT(&lod->lod_mdt_descs, index)
struct lod_avoid_guide {
/* ids of OSSs avoid guidance */
__u32 *lag_oss_avoid_array;
/* number of filled array items */
unsigned int lag_oaa_count;
/* number of allocated array items */
unsigned int lag_oaa_size;
/* bitmap of OSTs avoid guidance */
unsigned long *lag_ost_avoid_bitmap;
u32 lag_ost_avoid_size;
/* how many OSTs are available for alloc */
__u32 lag_ost_avail;
};
#define LOD_DOM_MIN_SIZE_KB (LOV_MIN_STRIPE_SIZE >> 10)
#define LOD_DOM_SFS_MAX_AGE 10
struct lod_device {
struct dt_device lod_dt_dev;
struct obd_export *lod_child_exp;
struct dt_device *lod_child;
struct lprocfs_stats *lod_stats;
spinlock_t lod_connects_lock;
int lod_connects;
unsigned int lod_recovery_completed:1,
lod_initialized:1,
lod_lmv_failout:1,
lod_child_got_update_log:1,
lod_dist_txn_check_space:1;
/* protect ld_active_tgt_count, ltd_active and lod_md_root */
spinlock_t lod_lock;
/* Description of OST */
struct lod_tgt_descs lod_ost_descs;
/* Description of MDT */
struct lod_tgt_descs lod_mdt_descs;
/* Recovery thread for lod_child */
struct task_struct *lod_child_recovery_task;
/* maximum EA size underlied OSD may have */
unsigned int lod_osd_max_easize;
/* maximum number of mirrors allowed */
unsigned int lod_mirror_count_max;
/* maximum size of MDT stripe for Data-on-MDT files. */
unsigned int lod_dom_stripesize_max_kb;
/* current DOM default stripe size adjusted by threshold */
unsigned int lod_dom_stripesize_cur_kb;
/* Threshold at which DOM default stripe will start decreasing */
__u64 lod_dom_threshold_free_mb;
/* Local OSD statfs cache */
spinlock_t lod_lsfs_lock;
time64_t lod_lsfs_age;
__u64 lod_lsfs_total_mb;
__u64 lod_lsfs_free_mb;
/* OST pool data */
int lod_pool_count;
struct rhashtable lod_pools_hash_body; /* used for key access */
struct list_head lod_pool_list; /* used for sequential access */
struct proc_dir_entry *lod_pool_proc_entry;
struct proc_dir_entry *lod_spill_proc_entry;
enum lustre_sec_part lod_sp_me;
struct proc_dir_entry *lod_symlink;
struct dentry *lod_debugfs;
struct dentry *lod_pool_debugfs;
/* ROOT object, used to fetch FS default striping */
struct lod_object *lod_md_root;
/* max stripe count if stripe count is set to -1. 0 means unlimited */
unsigned int lod_max_stripecount;
unsigned int lod_max_mdt_stripecount;
/* valid range: [1, LMV_MAX_STRIPES_PER_MDT] */
unsigned int lod_max_stripes_per_mdt;
};
#define lod_ost_bitmap lod_ost_descs.ltd_tgt_bitmap
#define lod_ost_size lod_ost_descs.ltd_tgts_size
#define lod_ost_count lod_ost_descs.ltd_lov_desc.ld_tgt_count
#define lod_ost_active_count lod_ost_descs.ltd_lov_desc.ld_active_tgt_count
#define lod_remote_mdt_count lod_mdt_descs.ltd_lmv_desc.ld_tgt_count
struct lod_layout_component {
struct lu_extent llc_extent;
__u32 llc_id;
__u32 llc_flags;
__u32 llc_magic;
union {
__u64 llc_time_and_id;
struct {
__u64 llc_timestamp:48;
/* mirror link id for data and parity components */
__u16 llc_mirror_link_id;
};
};
__u8 llc_compr_type;
__u8 llc_compr_lvl:4;
/* chunk_size =
* 2^(LOV_MIN_STRIPE_BITS + lum_bits)
*/
__u8 llc_compr_chunk_lum_bits:4;
union {
struct { /* plain layout V1/V3. */
__u32 llc_pattern;
__u32 llc_stripe_size;
__u16 llc_layout_gen;
__u16 llc_stripe_offset;
__u16 llc_stripe_count;
__u16 llc_stripes_allocated;
char *llc_pool;
/* ost list specified by LOV_USER_MAGIC_SPECIFIC lum */
struct lu_tgt_pool llc_ostlist;
struct dt_object **llc_stripe;
__u32 *llc_ost_indices;
/* EC component */
__u8 llc_dstripe_count;
__u8 llc_cstripe_count;
};
struct { /* Foreign mirror layout component */
__u32 llc_length;
__u32 llc_type;
__u32 llc_foreign_flags;
union {
/* Basic HSM layout information */
struct lov_hsm_base llc_hsm;
/* Other kinds of foreign types (i.e. DAOS) */
char *llc_value;
};
};
};
};
struct lod_default_striping {
/* default LOV */
/* current layout component count */
__u16 lds_def_comp_cnt;
__u16 lds_def_mirror_cnt;
/* the largest comp count ever used */
__u32 lds_def_comp_size_cnt;
struct lod_layout_component *lds_def_comp_entries;
/* default LMV */
__u32 lds_dir_def_stripe_count;
__u32 lds_dir_def_stripe_offset;
__u32 lds_dir_def_hash_type;
__u8 lds_dir_def_max_inherit;
__u8 lds_dir_def_max_inherit_rr;
/* default file striping flags (LOV) */
__u32 lds_def_striping_set:1,
lds_def_striping_is_composite:1,
/* default dir striping flags (LMV) */
lds_dir_def_striping_set:1;
};
enum layout_verify_flags {
LVF_ALL_STALE = BIT(0), /* check not all stale mirrors */
};
struct lod_mirror_entry {
__u16 lme_stale:1,
lme_prefer:1,
lme_hsm:1,
lme_parity:1;
/* mirror id */
__u16 lme_id;
/* preference */
__u16 lme_preference;
/* start,end index of this mirror in ldo_comp_entries */
__u16 lme_start;
__u16 lme_end;
};
struct lod_object {
/* common fields for both files and directories */
struct dt_object ldo_obj;
struct mutex ldo_layout_mutex;
/* foreign file/directory */
__u32 ldo_is_foreign:1;
union {
/* file stripe (LOV) */
struct {
__u32 ldo_layout_gen;
/* Layout component count for a regular file.
* It equals to 1 for non-composite layout. */
__u16 ldo_comp_cnt;
/* Layout mirror count for a PFLR file.
* It's 0 for files with non-composite layout. */
__u16 ldo_mirror_count;
struct lod_mirror_entry *ldo_mirrors;
__u32 ldo_is_composite:1,
ldo_flr_state:4,
ldo_comp_cached:1;
};
/* directory stripe (LMV) */
struct {
/* Slave stripe count for striped directory. */
__s16 ldo_dir_stripe_count;
/* How many stripes allocated for a striped directory */
__u16 ldo_dir_stripes_allocated;
__u32 ldo_dir_stripe_offset;
__u32 ldo_dir_hash_type;
__u32 ldo_dir_migrate_offset;
__u32 ldo_dir_migrate_hash;
__u32 ldo_dir_layout_version;
/* Is a slave stripe of striped directory? */
__u32 ldo_dir_slave_stripe:1,
ldo_dir_striped:1,
/* the stripe has been loaded */
ldo_dir_stripe_loaded:1;
/*
* This default LMV is parent default LMV, which will be
* used in child creation, and it's not cached, so this
* field is invalid after create, make sure it's used by
* lod_dir_striping_create_internal() only.
*/
struct lod_default_striping *ldo_def_striping;
};
};
union {
struct {
/* foreign/raw format LOV */
char *ldo_foreign_lov;
size_t ldo_foreign_lov_size;
};
struct {
/* foreign/raw format LMV */
char *ldo_foreign_lmv;
size_t ldo_foreign_lmv_size;
};
struct {
/* file stripe (LOV) */
struct lod_layout_component *ldo_comp_entries;
/* slave stripes of striped directory (LMV) */
struct dt_object **ldo_stripe;
};
};
};
#define ldo_dir_split_offset ldo_dir_migrate_offset
#define ldo_dir_split_hash ldo_dir_migrate_hash
#define lod_foreach_mirror_comp(comp, lo, mirror_idx) \
for (comp = &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_start]; \
comp <= &lo->ldo_comp_entries[lo->ldo_mirrors[mirror_idx].lme_end]; \
comp++)
static inline bool lod_is_flr(const struct lod_object *lo)
{
if (!lo->ldo_is_composite)
return false;
return (lo->ldo_flr_state & LCM_FL_FLR_MASK) != LCM_FL_NONE;
}
static inline bool lod_is_hsm(const struct lod_layout_component *lod_comp)
{
return lod_comp->llc_magic == LOV_MAGIC_FOREIGN &&
lov_hsm_type_supported(lod_comp->llc_type);
}
static inline bool lod_is_splitting(const struct lod_object *lo)
{
return lmv_hash_is_splitting(lo->ldo_dir_hash_type);
}
static inline bool lod_is_migrating(const struct lod_object *lo)
{
return lmv_hash_is_migrating(lo->ldo_dir_hash_type);
}
static inline bool lod_is_layout_changing(const struct lod_object *lo)
{
return lmv_hash_is_layout_changing(lo->ldo_dir_hash_type);
}
static inline int lod_set_pool(char **pool, const char *new_pool)
{
int len;
if (*pool == new_pool)
return 0;
if (*pool != NULL) {
len = strlen(*pool) + 1;
OBD_FREE(*pool, len);
*pool = NULL;
}
if (new_pool != NULL) {
len = strlen(new_pool) + 1;
OBD_ALLOC(*pool, len);
if (*pool == NULL)
return -ENOMEM;
strscpy(*pool, new_pool, len);
}
return 0;
}
static inline int lod_obj_set_pool(struct lod_object *lo, int i,
const char *new_pool)
{
return lod_set_pool(&lo->ldo_comp_entries[i].llc_pool, new_pool);
}
/**
* Create new layout generation.
*
* The only requirement for layout generation is that it changes when
* the layout is modified, so a circular counter is sufficient for the
* low rate of layout modifications.
*
* Layout generation is also used to generate unique component ID.
* To detect generation overflow, we preserve the highest bit of the
* generation when it wrapped.
*/
static inline void lod_obj_inc_layout_gen(struct lod_object *lo)
{
__u32 preserve = lo->ldo_layout_gen & ~LCME_ID_MASK;
lo->ldo_layout_gen++;
lo->ldo_layout_gen |= preserve;
/* Zero is not a valid generation */
if (unlikely((lo->ldo_layout_gen & LCME_ID_MASK) == 0)) {
lo->ldo_layout_gen++;
lo->ldo_layout_gen &= ~LU_LAYOUT_RESYNC;
}
}
struct lod_it {
struct dt_object *lit_obj; /* object from the layer below */
/* stripe offset of iteration */
__u32 lit_stripe_index;
__u32 lit_attr;
struct dt_it *lit_it; /* iterator from the layer below */
};
#define LOD_OBJS_INTRANS 4
struct lod_thread_info {
/* per-thread buffer for LOV EA, may be vmalloc'd */
struct lu_buf lti_ea_buf;
/* per-thread buffer for LMV EA */
struct lu_buf lti_buf;
struct ost_id lti_ostid;
struct lu_fid lti_fid;
struct obd_statfs lti_osfs;
struct lu_attr lti_attr;
struct lod_it lti_it;
struct ldlm_res_id lti_res_id;
/* used to hold lu_dirent, sizeof(struct lu_dirent) + NAME_MAX */
char lti_key[sizeof(struct lu_dirent) +
NAME_MAX];
struct dt_object_format lti_format;
struct lu_name lti_name;
struct lu_buf lti_linkea_buf;
struct dt_insert_rec lti_dt_rec;
struct llog_catid lti_cid;
struct llog_cookie lti_cookie;
struct lustre_cfg lti_lustre_cfg;
/* used to store parent default striping in create */
struct lod_default_striping lti_def_striping;
struct filter_fid lti_ff;
__u32 *lti_comp_idx;
size_t lti_comp_size;
size_t lti_count;
struct lu_attr lti_layout_attr;
/* object allocation avoid guide info */
struct lod_avoid_guide lti_avoid;
union lmv_mds_md lti_lmv;
struct dt_allocation_hint lti_ah;
int lti_obj_count;
struct lod_object *lti_obj[LOD_OBJS_INTRANS];
__u32 lti_gen[LOD_OBJS_INTRANS];
};
#define lti_ea_store lti_ea_buf.lb_buf
#define lti_ea_store_size lti_ea_buf.lb_len
/**
* \retval 0 object's layout hasn't changed in the transaction
* \retval > 0 object's layout has changed
* \retval -ENOENT object's layout gen hasn't saved in transatoin
* declaration
*/
static inline int
lod_check_layout_gen_intrans(struct lod_thread_info *info,
struct lod_object *lo)
{
int i;
int rc = -ENOENT;
for (i = 0; i < info->lti_obj_count; i++) {
if (info->lti_obj[i] != lo)
continue;
if (info->lti_gen[i] == lo->ldo_layout_gen)
rc = 0;
else
rc = i + 1;
break;
}
return rc;
}
static inline int
lod_save_layout_gen_intrans(struct lod_thread_info *info, struct lod_object *lo)
{
struct lu_object *luo = &lo->ldo_obj.do_lu;
int rc;
rc = lod_check_layout_gen_intrans(info, lo);
if (rc == 0)
return 0;
if (rc > 0) {
CDEBUG(D_LAYOUT,
"%s: obj %p gen changed from %d to %d in trans declaration\n",
luo->lo_dev->ld_obd->obd_name, lo, info->lti_gen[rc - 1],
lo->ldo_layout_gen);
return -EINVAL;
}
if (unlikely(info->lti_obj_count == LOD_OBJS_INTRANS)) {
CERROR("%s: "DFID
" save too many lod_object (%d) in one transaction, use bigger LOD_OBJS_INTRANS: rc = %d\n",
luo->lo_dev->ld_obd->obd_name,
PFID(lu_object_fid(luo)), LOD_OBJS_INTRANS, -E2BIG);
return -E2BIG;
}
info->lti_obj[info->lti_obj_count] = lo;
info->lti_gen[info->lti_obj_count] = lo->ldo_layout_gen;
info->lti_obj_count++;
return 0;
}
extern const struct lu_device_operations lod_lu_ops;
static inline int lu_device_is_lod(struct lu_device *d)
{
return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &lod_lu_ops);
}
static inline struct lod_device* lu2lod_dev(struct lu_device *d)
{
LASSERT(lu_device_is_lod(d));
return container_of_safe(d, struct lod_device, lod_dt_dev.dd_lu_dev);
}
static inline struct lu_device *lod2lu_dev(struct lod_device *d)
{
return &d->lod_dt_dev.dd_lu_dev;
}
static inline struct obd_device *lod2obd(struct lod_device *d)
{
return d->lod_dt_dev.dd_lu_dev.ld_obd;
}
static inline struct lod_device *dt2lod_dev(struct dt_device *d)
{
LASSERT(lu_device_is_lod(&d->dd_lu_dev));
return container_of(d, struct lod_device, lod_dt_dev);
}
static inline struct lod_object *lu2lod_obj(struct lu_object *o)
{
LASSERT(ergo(o != NULL, lu_device_is_lod(o->lo_dev)));
return container_of_safe(o, struct lod_object, ldo_obj.do_lu);
}
static inline struct lu_object *lod2lu_obj(struct lod_object *obj)
{
return &obj->ldo_obj.do_lu;
}
static inline const struct lu_fid *lod_object_fid(struct lod_object *obj)
{
return lu_object_fid(lod2lu_obj(obj));
}
static inline struct lod_object *lod_obj(const struct lu_object *o)
{
LASSERT(lu_device_is_lod(o->lo_dev));
return container_of(o, struct lod_object, ldo_obj.do_lu);
}
static inline struct lod_object *lod_dt_obj(const struct dt_object *d)
{
return lod_obj(&d->do_lu);
}
static inline struct dt_object* lod_object_child(struct lod_object *o)
{
return container_of(lu_object_next(lod2lu_obj(o)),
struct dt_object, do_lu);
}
static inline bool lod_obj_is_striped(struct dt_object *dt)
{
struct lod_object *lo = lod_dt_obj(dt);
int i;
bool rc = false;
if (!dt_object_exists(dt_object_child(dt)))
return false;
mutex_lock(&lo->ldo_layout_mutex);
if (S_ISDIR(dt->do_lu.lo_header->loh_attr)) {
rc = lo->ldo_dir_stripe_count != 0;
} else if (lo->ldo_is_foreign) {
rc = false;
} else {
for (i = 0; i < lo->ldo_comp_cnt; i++) {
if (lo->ldo_comp_entries[i].llc_magic ==
LOV_MAGIC_FOREIGN)
continue;
if (lo->ldo_comp_entries[i].llc_stripe == NULL)
continue;
LASSERT(lo->ldo_comp_entries[i].llc_stripe_count > 0);
rc = true;
break;
}
}
mutex_unlock(&lo->ldo_layout_mutex);
return rc;
}
extern struct lu_context_key lod_thread_key;
static inline struct lod_thread_info *lod_env_info(const struct lu_env *env)
{
struct lod_thread_info *info;
info = lu_context_key_get(&env->le_ctx, &lod_thread_key);
LASSERT(info);
return info;
}
static inline struct lu_name *
lod_name_get(const struct lu_env *env, const void *area, int len)
{
struct lu_name *lname;
lname = &lod_env_info(env)->lti_name;
lname->ln_name = area;
lname->ln_namelen = len;
return lname;
}
static inline struct lod_default_striping *
lod_lds_buf_get(const struct lu_env *env)
{
struct lod_thread_info *info = lod_env_info(env);
info->lti_def_striping.lds_def_striping_set = 0;
info->lti_def_striping.lds_dir_def_striping_set = 0;
return &info->lti_def_striping;
}
static inline void lod_layout_get_pool(struct lod_layout_component *entries,
int count, char *pool, int len)
{
int i;
for (i = 0; i < count; i++) {
if (entries[i].llc_magic == LOV_MAGIC_FOREIGN)
continue;
if (entries[i].llc_pool != NULL) {
strscpy(pool, entries[i].llc_pool, len);
break;
}
}
}
#define lod_foreach_mdt(lod, mdt) ltd_foreach_tgt(&(lod)->lod_mdt_descs, mdt)
#define lod_foreach_ost(lod, ost) ltd_foreach_tgt(&(lod)->lod_ost_descs, ost)
/* lod_dev.c */
extern struct kmem_cache *lod_object_kmem;
int lod_fld_lookup(const struct lu_env *env, struct lod_device *lod,
const struct lu_fid *fid, __u32 *tgt, int *flags);
int lod_sub_init_llog(const struct lu_env *env, struct lod_device *lod,
struct dt_device *dt);
void lod_sub_fini_llog(const struct lu_env *env,
struct dt_device *dt, struct task_struct **taskp);
int lodname2mdt_index(char *lodname, __u32 *mdt_index);
/* lod_lov.c */
void lod_getref(struct lod_tgt_descs *ltd);
void lod_putref(struct lod_device *lod, struct lod_tgt_descs *ltd);
int lod_add_device(const struct lu_env *env, struct lod_device *lod,
char *osp, unsigned index, unsigned gen, int mdt_index,
char *type, int active);
int lod_del_device(const struct lu_env *env, struct lod_device *lod,
struct lod_tgt_descs *ltd, char *osp, unsigned int idx,
unsigned int gen);
int validate_lod_and_idx(struct lod_device *lod, __u32 idx);
int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod,
struct lod_tgt_descs *ltd);
int lod_striping_load(const struct lu_env *env, struct lod_object *lo);
int lod_striping_reload(const struct lu_env *env, struct lod_object *lo,
const struct lu_buf *buf, enum layout_verify_flags lvf);
void lod_dom_stripesize_recalc(struct lod_device *d);
int lod_get_ea(const struct lu_env *env, struct lod_object *lo,
const char *name);
static inline int
lod_get_lov_ea(const struct lu_env *env, struct lod_object *lo)
{
return lod_get_ea(env, lo, XATTR_NAME_LOV);
}
static inline int
lod_get_lmv_ea(const struct lu_env *env, struct lod_object *lo)
{
return lod_get_ea(env, lo, XATTR_NAME_LMV);
}
static inline int
lod_get_default_lmv_ea(const struct lu_env *env, struct lod_object *lo)
{
return lod_get_ea(env, lo, XATTR_NAME_DEFAULT_LMV);
}
static inline void
lod_comp_set_init(struct lod_layout_component *entry)
{
entry->llc_flags |= LCME_FL_INIT;
}
static inline void
lod_comp_unset_init(struct lod_layout_component *entry)
{
entry->llc_flags &= ~LCME_FL_INIT;
}
static inline bool
lod_comp_inited(const struct lod_layout_component *entry)
{
return entry->llc_flags & LCME_FL_INIT;
}
/**
* For a PFL file, some of its component could be un-instantiated, so
* that their lov_ost_data_v1 array is not needed, we'd use this function
* to reduce the LOVEA buffer size.
*
* Note: if llc_ostlist contains value, we'd need lov_ost_data_v1 array to
* save the specified OST index list.
*/
static inline void
lod_comp_shrink_stripe_count(struct lod_layout_component *lod_comp,
__u16 *stripe_count)
{
/**
* Need one lov_ost_data_v1 to store invalid ost_idx, please refer to
* lod_parse_striping()
*/
if (!lod_comp_inited(lod_comp) && lod_comp->llc_ostlist.op_count == 0)
*stripe_count = 1;
}
void lod_fix_desc(struct lov_desc *desc);
void lod_fix_desc_qos_maxage(__u32 *val);
void lod_fix_desc_pattern(__u32 *val);
void lod_fix_desc_stripe_count(__u32 *val);
void lod_fix_desc_stripe_size(__u64 *val);
void lod_fix_lmv_desc_pattern(__u32 *val);
int lod_pools_init(struct lod_device *m, struct lustre_cfg *cfg);
int lod_pools_fini(struct lod_device *m);
int lod_parse_striping(const struct lu_env *env, struct lod_object *mo,
const struct lu_buf *buf, enum layout_verify_flags lvf);
int lod_parse_dir_striping(const struct lu_env *env, struct lod_object *lo,
const struct lu_buf *buf);
int lod_initialize_objects(const struct lu_env *env, struct lod_object *mo,
struct lov_ost_data_v1 *objs, int index);
int lod_verify_striping(const struct lu_env *env, struct lod_device *d,
struct lod_object *lo, const struct lu_buf *buf,
bool is_from_disk);
int lod_generate_lovea(const struct lu_env *env, struct lod_object *lo,
struct lov_mds_md *lmm, int *lmm_size, bool is_dir);
int lod_ea_store_resize(struct lod_thread_info *info, size_t size);
int lod_def_striping_comp_resize(struct lod_default_striping *lds, __u16 count);
void lod_free_def_comp_entries(struct lod_default_striping *lds);
void lod_free_comp_entries(struct lod_object *lo);
int lod_alloc_comp_entries(struct lod_object *lo, int mirror_cnt, int comp_cnt);
int lod_fill_mirrors(struct lod_object *lo);
int lod_init_comp_foreign(struct lod_layout_component *lod_comp, void *lmm);
/* lod_pool.c */
struct lod_pool_desc *lod_find_pool(struct lod_device *lod, const char *poolname);
void lod_pool_putref(struct lod_pool_desc *pool);
int lod_pool_del(struct obd_device *obd, char *poolname);
int lod_check_index_in_pool(__u32 idx, struct lod_pool_desc *pool);
int lod_pool_new(struct obd_device *obd, char *poolname);
int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname);
int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
struct lod_obj_stripe_cb_data;
typedef int (*lod_obj_stripe_cb_t)(const struct lu_env *env,
struct lod_object *lo, struct dt_object *dt,
struct thandle *th,
int comp_idx, int stripe_idx,
struct lod_obj_stripe_cb_data *data);
typedef bool (*lod_obj_comp_skip_cb_t)(const struct lu_env *env,
struct lod_object *lo, int comp_idx,
struct lod_obj_stripe_cb_data *data);
typedef int (*lod_obj_comp_cb_t)(const struct lu_env *env,
struct lod_object *lo, int comp_idx,
struct lod_obj_stripe_cb_data *data);
struct lod_obj_stripe_cb_data {
union {
const struct lu_attr *locd_attr;
int locd_ost_index;
const struct lu_buf *locd_buf;
};
lod_obj_stripe_cb_t locd_stripe_cb;
lod_obj_comp_skip_cb_t locd_comp_skip_cb;
lod_obj_comp_cb_t locd_comp_cb;
bool locd_declare;
};
/* lod_qos.c */
int lod_mdt_alloc_qos(const struct lu_env *env, struct lod_object *lo,
struct dt_object **stripes, u32 stripe_idx,
u32 stripe_count);
int lod_mdt_alloc_rr(const struct lu_env *env, struct lod_object *lo,
struct dt_object **stripes, u32 stripe_idx,
u32 stripe_count);
int lod_prepare_create(const struct lu_env *env, struct lod_object *lo,
struct lu_attr *attr, const struct lu_buf *buf,
struct thandle *th);
int lod_use_defined_striping(const struct lu_env *, struct lod_object *,
const struct lu_buf *);
int lod_qos_parse_config(const struct lu_env *env, struct lod_object *lo,
const struct lu_buf *buf);
void lod_qos_set_pool(struct lod_object *lo, int pos, const char *pool_name);
int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
struct lu_attr *attr, struct thandle *th,
int comp_idx, __u64 reserve);
__u16 lod_comp_entry_stripe_count(struct lod_object *lo,
int comp_idx, bool is_dir);
__u16 lod_get_stripe_count_plain(struct lod_device *lod, struct lod_object *lo,
__u16 stripe_count, bool overstriping,
enum lod_uses_hint *flags);
__u16 lod_get_stripe_count(struct lod_device *lod, struct lod_object *lo,
int comp_idx, __u16 stripe_count, bool overstriping,
enum lod_uses_hint *flags);
void lod_qos_statfs_update(const struct lu_env *env, struct lod_device *lod,
struct lu_tgt_descs *ltd);
/* lproc_lod.c */
int lod_procfs_init(struct lod_device *lod);
void lod_procfs_fini(struct lod_device *lod);
/* lod_object.c */
extern const struct dt_object_operations lod_obj_ops;
extern const struct lu_object_operations lod_lu_obj_ops;
int lod_load_lmv_shards(const struct lu_env *env, struct lod_object *lo,
struct lu_buf *buf, bool resize);
int lod_declare_striped_create(const struct lu_env *env, struct dt_object *dt,
struct lu_attr *attr,
const struct lu_buf *lovea, struct thandle *th);
int lod_striped_create(const struct lu_env *env, struct dt_object *dt,
struct lu_attr *attr, struct dt_object_format *dof,
struct thandle *th);
int lod_alloc_foreign_lov(struct lod_object *lo, size_t size);
void lod_free_foreign_lov(struct lod_object *lo);
void lod_striping_free_nolock(const struct lu_env *env, struct lod_object *lo);
void lod_striping_free(const struct lu_env *env, struct lod_object *lo);
int lod_obj_for_each_stripe(const struct lu_env *env, struct lod_object *lo,
struct thandle *th,
struct lod_obj_stripe_cb_data *data);
int lod_comp_copy_ost_lists(struct lod_layout_component *lod_comp,
struct lov_user_md_v3 *v3);
void lod_adjust_stripe_size(struct lod_layout_component *comp,
__u32 def_stripe_size);
/* lod_sub_object.c */
struct thandle *lod_sub_get_thandle(const struct lu_env *env,
struct thandle *th,
const struct dt_object *sub_obj,
bool *record_update);
int lod_sub_declare_create(const struct lu_env *env, struct dt_object *dt,
struct lu_attr *attr,
struct dt_allocation_hint *hint,
struct dt_object_format *dof, struct thandle *th);
int lod_sub_create(const struct lu_env *env, struct dt_object *dt,
struct lu_attr *attr, struct dt_allocation_hint *hint,
struct dt_object_format *dof, struct thandle *th);
int lod_sub_declare_ref_add(const struct lu_env *env, struct dt_object *dt,
struct thandle *th);
int lod_sub_ref_add(const struct lu_env *env, struct dt_object *dt,
struct thandle *th);
int lod_sub_declare_ref_del(const struct lu_env *env, struct dt_object *dt,
struct thandle *th);
int lod_sub_ref_del(const struct lu_env *env, struct dt_object *dt,
struct thandle *th);
int lod_sub_declare_destroy(const struct lu_env *env, struct dt_object *dt,
struct thandle *th);
int lod_sub_destroy(const struct lu_env *env, struct dt_object *dt,
struct thandle *th);
int lod_sub_declare_insert(const struct lu_env *env, struct dt_object *dt,
const struct dt_rec *rec, const struct dt_key *key,
struct thandle *th);
int lod_sub_insert(const struct lu_env *env, struct dt_object *dt,
const struct dt_rec *rec, const struct dt_key *key,
struct thandle *th);
int lod_sub_declare_delete(const struct lu_env *env, struct dt_object *dt,
const struct dt_key *key, struct thandle *th);
int lod_sub_delete(const struct lu_env *env, struct dt_object *dt,
const struct dt_key *name, struct thandle *th);
int lod_sub_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
const struct lu_buf *buf, const char *name,
int fl, struct thandle *th);
int lod_sub_xattr_set(const struct lu_env *env, struct dt_object *dt,
const struct lu_buf *buf, const char *name, int fl,
struct thandle *th);
int lod_sub_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
const struct lu_attr *attr, struct thandle *th);
int lod_sub_attr_set(const struct lu_env *env, struct dt_object *dt,
const struct lu_attr *attr, struct thandle *th);
int lod_sub_declare_xattr_del(const struct lu_env *env, struct dt_object *dt,
const char *name, struct thandle *th);
int lod_sub_xattr_del(const struct lu_env *env, struct dt_object *dt,
const char *name, struct thandle *th);
int lod_sub_declare_write(const struct lu_env *env, struct dt_object *dt,
const struct lu_buf *buf, loff_t pos,
struct thandle *th);
ssize_t lod_sub_write(const struct lu_env *env, struct dt_object *dt,
const struct lu_buf *buf, loff_t *pos,
struct thandle *th);
int lod_sub_declare_punch(const struct lu_env *env, struct dt_object *dt,
__u64 start, __u64 end, struct thandle *th);
int lod_sub_punch(const struct lu_env *env, struct dt_object *dt,
__u64 start, __u64 end, struct thandle *th);
int lod_sub_prep_llog(const struct lu_env *env, struct lod_device *lod,
struct dt_device *dt, int index);
void lod_check_and_spill_pool(const struct lu_env *env, struct lod_device *lod,
char **poolname);
void lod_spill_target_refresh(const struct lu_env *env, struct lod_device *lod,
struct lod_pool_desc *pool);
struct lod_pool_desc *lod_pool_find(struct lod_device *lod, const char *poolname);
int lod_tgt_weights_seq_show(struct seq_file *m, struct lod_device *lod,
struct lu_tgt_pool *tgts, bool mdt);
int lod_tgt_weights_seq_write(struct seq_file *m, const char __user *buf,
size_t count, struct lod_device *lod,
struct lu_tgt_pool *tgts, bool is_mdt);
extern struct lprocfs_vars lprocfs_lod_spill_vars[];
#endif
