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, 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>
43 #include <dt_object.h>
45 #define LOV_USES_ASSIGNED_STRIPE 0
46 #define LOV_USES_DEFAULT_STRIPE 1
49 struct dt_device *ltd_ost;
50 struct list_head ltd_kill;
51 struct obd_export *ltd_exp;
52 struct obd_uuid ltd_uuid;
55 struct ltd_qos ltd_qos; /* qos info per target */
56 struct obd_statfs ltd_statfs;
57 unsigned long ltd_active:1,/* is this target up for requests */
58 ltd_activate:1,/* should target be activated */
59 ltd_reap:1; /* should this target be deleted */
62 #define OST_PTRS 256 /* number of pointers at 1st level */
63 #define OST_PTRS_PER_BLOCK 256 /* number of pointers at 2nd level */
65 struct lod_ost_desc_idx {
66 struct lod_ost_desc *ldi_ost[OST_PTRS_PER_BLOCK];
69 #define OST_TGT(dev,index) \
70 ((dev)->lod_ost_idx[(index) / \
71 OST_PTRS_PER_BLOCK]->ldi_ost[(index)%OST_PTRS_PER_BLOCK])
74 struct dt_device lod_dt_dev;
75 struct obd_export *lod_child_exp;
76 struct dt_device *lod_child;
77 cfs_proc_dir_entry_t *lod_proc_entry;
78 struct lprocfs_stats *lod_stats;
80 int lod_recovery_completed;
82 /* lov settings descriptor storing static information */
83 struct lov_desc lod_desc;
85 /* use to protect ld_active_tgt_count and all ltd_active */
86 spinlock_t lod_desc_lock;
88 /* list of known OSTs */
89 struct lod_ost_desc_idx *lod_ost_idx[OST_PTRS];
91 /* Size of the lod_osts array, granted to be a power of 2 */
93 /* number of registered OSTs */
95 /* OSTs scheduled to be deleted */
97 /* bitmap of OSTs available */
98 cfs_bitmap_t *lod_ost_bitmap;
100 /* maximum EA size underlied OSD may have */
101 unsigned int lod_osd_max_easize;
103 /* Table refcount used for delayed deletion */
105 /* mutex to serialize concurrent updates to the ost table */
106 struct mutex lod_mutex;
107 /* read/write semaphore used for array relocation */
108 struct rw_semaphore lod_rw_sem;
110 /* QoS info per LOD */
111 struct lov_qos lod_qos; /* qos info per lod */
114 struct ost_pool lod_pool_info; /* all OSTs in a packed array */
116 cfs_hash_t *lod_pools_hash_body; /* used for key access */
117 cfs_list_t lod_pool_list; /* used for sequential access */
118 cfs_proc_dir_entry_t *lod_pool_proc_entry;
120 enum lustre_sec_part lod_sp_me;
122 cfs_proc_dir_entry_t *lod_symlink;
126 * XXX: shrink this structure, currently it's 72bytes on 32bit arch,
127 * so, slab will be allocating 128bytes
130 struct dt_object ldo_obj;
132 /* if object is striped, then the next fields describe stripes */
134 __u16 ldo_layout_gen;
135 __u32 ldo_stripe_size;
137 struct dt_object **ldo_stripe;
138 /* to know how much memory to free, ldo_stripenr can be less */
139 int ldo_stripes_allocated;
140 /* default striping for directory represented by this object
141 * is cached in stripenr/stripe_size */
142 int ldo_striping_cached:1;
143 int ldo_def_striping_set:1;
144 __u32 ldo_def_stripe_size;
145 __u16 ldo_def_stripenr;
146 __u16 ldo_def_stripe_offset;
151 struct dt_object *lit_obj; /* object from the layer below */
152 struct dt_it *lit_it; /* iterator from the layer below */
155 struct lod_thread_info {
156 /* per-thread buffer for LOV EA */
158 int lti_ea_store_size;
159 struct lu_buf lti_buf;
160 struct ost_id lti_ostid;
161 struct lu_fid lti_fid;
162 struct obd_statfs lti_osfs;
163 struct lu_attr lti_attr;
164 struct lod_it lti_it;
167 extern const struct lu_device_operations lod_lu_ops;
169 static inline int lu_device_is_lod(struct lu_device *d)
171 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &lod_lu_ops);
174 static inline struct lod_device* lu2lod_dev(struct lu_device *d)
176 LASSERT(lu_device_is_lod(d));
177 return container_of0(d, struct lod_device, lod_dt_dev.dd_lu_dev);
180 static inline struct lu_device *lod2lu_dev(struct lod_device *d)
182 return &d->lod_dt_dev.dd_lu_dev;
185 static inline struct obd_device *lod2obd(struct lod_device *d)
187 return d->lod_dt_dev.dd_lu_dev.ld_obd;
190 static inline struct lod_device *dt2lod_dev(struct dt_device *d)
192 LASSERT(lu_device_is_lod(&d->dd_lu_dev));
193 return container_of0(d, struct lod_device, lod_dt_dev);
196 static inline struct lod_object *lu2lod_obj(struct lu_object *o)
198 LASSERT(ergo(o != NULL, lu_device_is_lod(o->lo_dev)));
199 return container_of0(o, struct lod_object, ldo_obj.do_lu);
202 static inline struct lu_object *lod2lu_obj(struct lod_object *obj)
204 return &obj->ldo_obj.do_lu;
207 static inline struct lod_object *lod_obj(const struct lu_object *o)
209 LASSERT(lu_device_is_lod(o->lo_dev));
210 return container_of0(o, struct lod_object, ldo_obj.do_lu);
213 static inline struct lod_object *lod_dt_obj(const struct dt_object *d)
215 return lod_obj(&d->do_lu);
218 static inline struct dt_object* lod_object_child(struct lod_object *o)
220 return container_of0(lu_object_next(lod2lu_obj(o)),
221 struct dt_object, do_lu);
224 static inline struct dt_object *lu2dt_obj(struct lu_object *o)
226 LASSERT(ergo(o != NULL, lu_device_is_dt(o->lo_dev)));
227 return container_of0(o, struct dt_object, do_lu);
230 static inline struct dt_object *dt_object_child(struct dt_object *o)
232 return container_of0(lu_object_next(&(o)->do_lu),
233 struct dt_object, do_lu);
236 extern struct lu_context_key lod_thread_key;
238 static inline struct lod_thread_info *lod_env_info(const struct lu_env *env)
240 struct lod_thread_info *info;
241 info = lu_context_key_get(&env->le_ctx, &lod_thread_key);
246 #define lod_foreach_ost(__dev, index) \
247 if ((__dev)->lod_osts_size > 0) \
248 cfs_foreach_bit((__dev)->lod_ost_bitmap, (index))
251 void lod_getref(struct lod_device *lod);
252 void lod_putref(struct lod_device *lod);
253 int lod_add_device(const struct lu_env *env, struct lod_device *m,
254 char *osp, unsigned index, unsigned gen, int active);
255 int lod_del_device(const struct lu_env *env, struct lod_device *m,
256 char *osp, unsigned index, unsigned gen);
257 int lod_load_striping(const struct lu_env *env, struct lod_object *mo);
258 int lod_get_lov_ea(const struct lu_env *env, struct lod_object *mo);
259 void lod_fix_desc(struct lov_desc *desc);
260 void lod_fix_desc_qos_maxage(__u32 *val);
261 void lod_fix_desc_pattern(__u32 *val);
262 void lod_fix_desc_stripe_count(__u32 *val);
263 void lod_fix_desc_stripe_size(__u64 *val);
264 int lod_pools_init(struct lod_device *m, struct lustre_cfg *cfg);
265 int lod_pools_fini(struct lod_device *m);
266 int lod_parse_striping(const struct lu_env *env, struct lod_object *mo,
267 const struct lu_buf *buf);
268 int lod_initialize_objects(const struct lu_env *env, struct lod_object *mo,
269 struct lov_ost_data_v1 *objs);
270 int lod_store_def_striping(const struct lu_env *env, struct dt_object *dt,
272 int lod_verify_striping(struct lod_device *d, const struct lu_buf *buf, int specific);
273 int lod_generate_and_set_lovea(const struct lu_env *env,
274 struct lod_object *mo, struct thandle *th);
277 int lod_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
278 int lod_ost_pool_remove(struct ost_pool *op, __u32 idx);
279 int lod_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
280 struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname);
281 void lod_pool_putref(struct pool_desc *pool);
282 int lod_ost_pool_free(struct ost_pool *op);
283 int lod_pool_del(struct obd_device *obd, char *poolname);
284 int lod_ost_pool_init(struct ost_pool *op, unsigned int count);
285 extern cfs_hash_ops_t pool_hash_operations;
286 int lod_check_index_in_pool(__u32 idx, struct pool_desc *pool);
287 int lod_pool_new(struct obd_device *obd, char *poolname);
288 int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname);
289 int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
292 int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
293 struct lu_attr *attr, const struct lu_buf *buf,
295 int qos_add_tgt(struct lod_device*, struct lod_ost_desc *);
296 int qos_del_tgt(struct lod_device *, struct lod_ost_desc *);
299 void lprocfs_lod_init_vars(struct lprocfs_static_vars *lvars);
300 int lod_procfs_init(struct lod_device *lod);
301 void lod_procfs_fini(struct lod_device *lod);
304 int lod_object_set_pool(struct lod_object *o, char *pool);
305 int lod_declare_striped_object(const struct lu_env *env, struct dt_object *dt,
306 struct lu_attr *attr,
307 const struct lu_buf *lovea, struct thandle *th);
308 int lod_striping_create(const struct lu_env *env, struct dt_object *dt,
309 struct lu_attr *attr, struct dt_object_format *dof,
311 void lod_object_free_striping(const struct lu_env *env, struct lod_object *lo);