/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License version 2 for more details. A copy is * included in the COPYING file that accompanied this code. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * GPL HEADER END */ /* * Copyright 2009 Sun Microsystems, Inc. All rights reserved * Use is subject to license terms. * * Copyright (c) 2012, 2015, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/lod/lod_internal.h * * Author: Alex Zhuravlev * Author: Mikhail Pershin */ #ifndef _LOD_INTERNAL_H #define _LOD_INTERNAL_H #include #include #include #include #define LOV_USES_ASSIGNED_STRIPE 0 #define LOV_USES_DEFAULT_STRIPE 1 /* 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)) #define LOV_OFFSET_DEFAULT ((__u16)-1) struct lod_qos_rr { spinlock_t lqr_alloc; /* protect allocation index */ __u32 lqr_start_idx; /* start index of new inode */ __u32 lqr_offset_idx;/* aliasing for start_idx */ int lqr_start_count;/* reseed counter */ struct ost_pool lqr_pool; /* round-robin optimized list */ unsigned long lqr_dirty:1; /* recalc round-robin list */ }; struct pool_desc { char pool_name[LOV_MAXPOOLNAME + 1]; struct ost_pool pool_obds; /* pool members */ atomic_t pool_refcount; struct lod_qos_rr pool_rr; struct hlist_node pool_hash; /* access by poolname */ struct list_head pool_list; struct proc_dir_entry *pool_proc_entry; struct obd_device *pool_lobd; /* owner */ }; #define pool_tgt_size(p) ((p)->pool_obds.op_size) #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) struct lod_qos { struct list_head lq_oss_list; struct rw_semaphore lq_rw_sem; __u32 lq_active_oss_count; unsigned int lq_prio_free; /* priority for free space */ unsigned int lq_threshold_rr;/* priority for rr */ struct lod_qos_rr lq_rr; /* round robin qos data */ bool lq_dirty:1, /* recalc qos data */ lq_same_space:1,/* the ost's all have approx. the same space avail */ lq_reset:1; /* zero current penalties */ }; struct lod_qos_oss { struct obd_uuid lqo_uuid; /* ptlrpc's c_remote_uuid */ struct list_head lqo_oss_list; /* link to lov_qos */ __u64 lqo_bavail; /* total bytes avail on OSS */ __u64 lqo_penalty; /* current penalty */ __u64 lqo_penalty_per_obj; /* penalty decrease every obj*/ time_t lqo_used; /* last used time, seconds */ __u32 lqo_ost_count; /* number of osts on this oss */ }; struct ltd_qos { struct lod_qos_oss *ltq_oss; /* oss info */ __u64 ltq_penalty; /* current penalty */ __u64 ltq_penalty_per_obj; /* penalty decrease every obj*/ __u64 ltq_weight; /* net weighting */ time_t ltq_used; /* last used time, seconds */ bool ltq_usable:1; /* usable for striping */ }; struct lod_tgt_desc { struct dt_device *ltd_tgt; struct list_head ltd_kill; struct obd_export *ltd_exp; struct obd_uuid ltd_uuid; __u32 ltd_gen; __u32 ltd_index; struct ltd_qos ltd_qos; /* qos info per target */ struct obd_statfs ltd_statfs; struct ptlrpc_thread *ltd_recovery_thread; unsigned long ltd_active:1,/* is this target up for requests */ ltd_activate:1,/* should target be activated */ ltd_reap:1, /* should this target be deleted */ ltd_got_update_log:1, /* Already got update log */ ltd_connecting:1; /* target is connecting */ }; #define TGT_PTRS 256 /* number of pointers at 1st level */ #define TGT_PTRS_PER_BLOCK 256 /* number of pointers at 2nd level */ struct lod_tgt_desc_idx { struct lod_tgt_desc *ldi_tgt[TGT_PTRS_PER_BLOCK]; }; #define LTD_TGT(ltd, index) \ ((ltd)->ltd_tgt_idx[(index) / \ TGT_PTRS_PER_BLOCK]->ldi_tgt[(index) % TGT_PTRS_PER_BLOCK]) #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_tgt_descs { /* list of known TGTs */ struct lod_tgt_desc_idx *ltd_tgt_idx[TGT_PTRS]; /* Size of the lod_tgts array, granted to be a power of 2 */ __u32 ltd_tgts_size; /* number of registered TGTs */ __u32 ltd_tgtnr; /* bitmap of TGTs available */ struct cfs_bitmap *ltd_tgt_bitmap; /* TGTs scheduled to be deleted */ __u32 ltd_death_row; /* Table refcount used for delayed deletion */ int ltd_refcount; /* mutex to serialize concurrent updates to the tgt table */ struct mutex ltd_mutex; /* read/write semaphore used for array relocation */ struct rw_semaphore ltd_rw_sem; }; struct lod_device { struct dt_device lod_dt_dev; struct obd_export *lod_child_exp; struct dt_device *lod_child; struct proc_dir_entry *lod_proc_entry; 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; /* lov settings descriptor storing static information */ struct lov_desc lod_desc; /* 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 ptlrpc_thread lod_child_recovery_thread; /* maximum EA size underlied OSD may have */ unsigned int lod_osd_max_easize; /*FIXME: When QOS and pool is implemented for MDT, probably these * structure should be moved to lod_tgt_descs as well. */ /* QoS info per LOD */ struct lod_qos lod_qos; /* qos info per lod */ /* OST pool data */ struct ost_pool lod_pool_info; /* all OSTs in a packed array */ int lod_pool_count; struct cfs_hash *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; enum lustre_sec_part lod_sp_me; struct proc_dir_entry *lod_symlink; /* ROOT object, used to fetch FS default striping */ struct lod_object *lod_md_root; }; #define lod_osts lod_ost_descs.ltd_tgts #define lod_ost_bitmap lod_ost_descs.ltd_tgt_bitmap #define lod_ostnr lod_ost_descs.ltd_tgtnr #define lod_osts_size lod_ost_descs.ltd_tgts_size #define ltd_ost ltd_tgt #define lod_ost_desc lod_tgt_desc #define lod_mdts lod_mdt_descs.ltd_tgts #define lod_mdt_bitmap lod_mdt_descs.ltd_tgt_bitmap #define lod_remote_mdt_count lod_mdt_descs.ltd_tgtnr #define lod_mdts_size lod_mdt_descs.ltd_tgts_size #define ltd_mdt ltd_tgt #define lod_mdt_desc lod_tgt_desc struct lod_default_striping { /* default LOV */ __u32 lds_def_stripe_size; __u16 lds_def_stripenr; __u16 lds_def_stripe_offset; char lds_def_pool[LOV_MAXPOOLNAME + 1]; /* default LMV */ __u32 lds_dir_def_stripenr; __u32 lds_dir_def_stripe_offset; __u32 lds_dir_def_hash_type; /* flags whether default striping is set */ __u32 lds_def_striping_set:1, lds_dir_def_striping_set:1; }; struct lod_object { struct dt_object ldo_obj; union { /* file stripe */ struct { /* * don't change field order, because both file and * directory use ldo_stripenr/ldo_stripes_allocated * to access stripe number. */ __u16 ldo_stripenr; __u16 ldo_stripes_allocated; __u16 ldo_layout_gen; __u16 ldo_released_stripenr; __u32 ldo_pattern; __u32 ldo_stripe_size; __u16 ldo_stripe_offset; char *ldo_pool; }; /* directory stripe */ struct { __u16 ldo_dir_stripenr; __u16 ldo_dir_stripes_allocated; __u32 ldo_dir_stripe_offset; __u32 ldo_dir_hash_type; __u32 ldo_dir_slave_stripe:1, ldo_dir_striped:1; /* * default striping is 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; }; }; struct dt_object **ldo_stripe; }; static inline int lod_object_set_pool(struct lod_object *lo, const char *pool) { int len; if (lo->ldo_pool != NULL) { len = strlen(lo->ldo_pool) + 1; OBD_FREE(lo->ldo_pool, len); lo->ldo_pool = NULL; } if (pool != NULL) { len = strlen(pool) + 1; OBD_ALLOC(lo->ldo_pool, len); if (lo->ldo_pool == NULL) return -ENOMEM; strlcpy(lo->ldo_pool, pool, len); } return 0; } 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 */ }; struct lod_thread_info { /* per-thread buffer for LOV EA, may be vmalloc'd */ void *lti_ea_store; __u32 lti_ea_store_size; /* 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; }; 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_of0(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_of0(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_of0(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 struct lod_object *lod_obj(const struct lu_object *o) { LASSERT(lu_device_is_lod(o->lo_dev)); return container_of0(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_of0(lu_object_next(lod2lu_obj(o)), struct dt_object, do_lu); } 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; } #define lod_foreach_ost(__dev, index) \ if ((__dev)->lod_osts_size > 0) \ cfs_foreach_bit((__dev)->lod_ost_bitmap, (index)) #define lod_foreach_mdt(mdt_dev, index) \ cfs_foreach_bit((mdt_dev)->lod_mdt_bitmap, (index)) /* 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 ptlrpc_thread *thread); int lodname2mdt_index(char *lodname, __u32 *mdt_index); extern void target_recovery_fini(struct obd_device *obd); /* 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 idx, unsigned gen, bool for_ost); int lod_fini_tgt(const struct lu_env *env, struct lod_device *lod, struct lod_tgt_descs *ltd, bool for_ost); int lod_load_striping_locked(const struct lu_env *env, struct lod_object *lo); int lod_load_striping(const struct lu_env *env, struct lod_object *lo); 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); } 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); 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); 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 lod_verify_striping(struct lod_device *d, const struct lu_buf *buf, bool is_from_disk); int lod_generate_and_set_lovea(const struct lu_env *env, struct lod_object *mo, struct thandle *th); int lod_ea_store_resize(struct lod_thread_info *info, size_t size); /* lod_pool.c */ int lod_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count); int lod_ost_pool_remove(struct ost_pool *op, __u32 idx); int lod_ost_pool_extend(struct ost_pool *op, unsigned int min_count); struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname); void lod_pool_putref(struct pool_desc *pool); int lod_ost_pool_free(struct ost_pool *op); int lod_pool_del(struct obd_device *obd, char *poolname); int lod_ost_pool_init(struct ost_pool *op, unsigned int count); extern struct cfs_hash_ops pool_hash_operations; int lod_check_index_in_pool(__u32 idx, struct 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); /* lod_qos.c */ int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo, struct lu_attr *attr, const struct lu_buf *buf, struct thandle *th); int qos_add_tgt(struct lod_device*, struct lod_tgt_desc *); int qos_del_tgt(struct lod_device *, struct lod_tgt_desc *); void lod_qos_rr_init(struct lod_qos_rr *lqr); /* lproc_lod.c */ int lod_procfs_init(struct lod_device *lod); void lod_procfs_fini(struct lod_device *lod); /* lod_object.c */ extern struct dt_object_operations lod_obj_ops; extern 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_object(const struct lu_env *env, struct dt_object *dt, struct lu_attr *attr, const struct lu_buf *lovea, struct thandle *th); int lod_striping_create(const struct lu_env *env, struct dt_object *dt, struct lu_attr *attr, struct dt_object_format *dof, struct thandle *th); void lod_object_free_striping(const struct lu_env *env, struct lod_object *lo); /* 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_object_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_object_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_object_declare_ref_add(const struct lu_env *env, struct dt_object *dt, struct thandle *th); int lod_sub_object_ref_add(const struct lu_env *env, struct dt_object *dt, struct thandle *th); int lod_sub_object_declare_ref_del(const struct lu_env *env, struct dt_object *dt, struct thandle *th); int lod_sub_object_ref_del(const struct lu_env *env, struct dt_object *dt, struct thandle *th); int lod_sub_object_declare_destroy(const struct lu_env *env, struct dt_object *dt, struct thandle *th); int lod_sub_object_destroy(const struct lu_env *env, struct dt_object *dt, struct thandle *th); int lod_sub_object_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_object_index_insert(const struct lu_env *env, struct dt_object *dt, const struct dt_rec *rec, const struct dt_key *key, struct thandle *th, int ign); int lod_sub_object_declare_delete(const struct lu_env *env, struct dt_object *dt, const struct dt_key *key, struct thandle *th); int lod_sub_object_delete(const struct lu_env *env, struct dt_object *dt, const struct dt_key *name, struct thandle *th); int lod_sub_object_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_object_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_object_declare_attr_set(const struct lu_env *env, struct dt_object *dt, const struct lu_attr *attr, struct thandle *th); int lod_sub_object_attr_set(const struct lu_env *env, struct dt_object *dt, const struct lu_attr *attr, struct thandle *th); int lod_sub_object_declare_xattr_del(const struct lu_env *env, struct dt_object *dt, const char *name, struct thandle *th); int lod_sub_object_xattr_del(const struct lu_env *env, struct dt_object *dt, const char *name, struct thandle *th); int lod_sub_object_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_object_write(const struct lu_env *env, struct dt_object *dt, const struct lu_buf *buf, loff_t *pos, struct thandle *th, int rq); int lod_sub_object_declare_punch(const struct lu_env *env, struct dt_object *dt, __u64 start, __u64 end, struct thandle *th); int lod_sub_object_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); #endif