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.
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * included in the COPYING file that accompanied this code.
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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.
27 * This file is part of Lustre, http://www.lustre.org/
28 * Lustre is a trademark of Sun Microsystems, Inc.
30 * lustre/lod/lod_internal.h
32 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
33 * Author: Mikhail Pershin <mike.pershin@intel.com>
36 #ifndef _LOD_INTERNAL_H
37 #define _LOD_INTERNAL_H
39 #include <libcfs/libcfs.h>
41 #include <dt_object.h>
43 #define LOV_USES_ASSIGNED_STRIPE 0
44 #define LOV_USES_DEFAULT_STRIPE 1
47 struct dt_device *ltd_ost;
48 struct list_head ltd_kill;
49 struct obd_export *ltd_exp;
50 struct obd_uuid ltd_uuid;
53 struct ltd_qos ltd_qos; /* qos info per target */
54 struct obd_statfs ltd_statfs;
55 unsigned long ltd_active:1,/* is this target up for requests */
56 ltd_activate:1,/* should target be activated */
57 ltd_reap:1; /* should this target be deleted */
60 #define OST_PTRS 256 /* number of pointers at 1st level */
61 #define OST_PTRS_PER_BLOCK 256 /* number of pointers at 2nd level */
63 struct lod_ost_desc_idx {
64 struct lod_ost_desc *ldi_ost[OST_PTRS_PER_BLOCK];
67 #define OST_TGT(dev,index) \
68 ((dev)->lod_ost_idx[(index) / \
69 OST_PTRS_PER_BLOCK]->ldi_ost[(index)%OST_PTRS_PER_BLOCK])
72 struct dt_device lod_dt_dev;
73 struct obd_export *lod_child_exp;
74 struct dt_device *lod_child;
75 cfs_proc_dir_entry_t *lod_proc_entry;
76 struct lprocfs_stats *lod_stats;
78 int lod_recovery_completed;
80 /* lov settings descriptor storing static information */
81 struct lov_desc lod_desc;
83 /* use to protect ld_active_tgt_count and all ltd_active */
84 spinlock_t lod_desc_lock;
86 /* list of known OSTs */
87 struct lod_ost_desc_idx *lod_ost_idx[OST_PTRS];
89 /* Size of the lod_osts array, granted to be a power of 2 */
91 /* number of registered OSTs */
93 /* OSTs scheduled to be deleted */
95 /* bitmap of OSTs available */
96 cfs_bitmap_t *lod_ost_bitmap;
98 /* maximum EA size underlied OSD may have */
99 unsigned int lod_osd_max_easize;
101 /* Table refcount used for delayed deletion */
103 /* mutex to serialize concurrent updates to the ost table */
104 struct mutex lod_mutex;
105 /* read/write semaphore used for array relocation */
106 struct rw_semaphore lod_rw_sem;
108 /* QoS info per LOD */
109 struct lov_qos lod_qos; /* qos info per lod */
112 struct ost_pool lod_pool_info; /* all OSTs in a packed array */
114 cfs_hash_t *lod_pools_hash_body; /* used for key access */
115 cfs_list_t lod_pool_list; /* used for sequential access */
116 cfs_proc_dir_entry_t *lod_pool_proc_entry;
118 enum lustre_sec_part lod_sp_me;
120 cfs_proc_dir_entry_t *lod_symlink;
124 * XXX: shrink this structure, currently it's 72bytes on 32bit arch,
125 * so, slab will be allocating 128bytes
128 struct dt_object ldo_obj;
130 /* if object is striped, then the next fields describe stripes */
132 __u16 ldo_layout_gen;
133 __u32 ldo_stripe_size;
135 struct dt_object **ldo_stripe;
136 /* to know how much memory to free, ldo_stripenr can be less */
137 int ldo_stripes_allocated;
138 /* default striping for directory represented by this object
139 * is cached in stripenr/stripe_size */
140 int ldo_striping_cached:1;
141 int ldo_def_striping_set:1;
142 __u32 ldo_def_stripe_size;
143 __u16 ldo_def_stripenr;
144 __u16 ldo_def_stripe_offset;
149 struct dt_object *lit_obj; /* object from the layer below */
150 struct dt_it *lit_it; /* iterator from the layer below */
153 struct lod_thread_info {
154 /* per-thread buffer for LOV EA */
156 int lti_ea_store_size;
157 struct lu_buf lti_buf;
158 struct ost_id lti_ostid;
159 struct lu_fid lti_fid;
160 struct obd_statfs lti_osfs;
161 struct lu_attr lti_attr;
162 struct lod_it lti_it;
165 extern const struct lu_device_operations lod_lu_ops;
167 static inline int lu_device_is_lod(struct lu_device *d)
169 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &lod_lu_ops);
172 static inline struct lod_device* lu2lod_dev(struct lu_device *d)
174 LASSERT(lu_device_is_lod(d));
175 return container_of0(d, struct lod_device, lod_dt_dev.dd_lu_dev);
178 static inline struct lu_device *lod2lu_dev(struct lod_device *d)
180 return &d->lod_dt_dev.dd_lu_dev;
183 static inline struct obd_device *lod2obd(struct lod_device *d)
185 return d->lod_dt_dev.dd_lu_dev.ld_obd;
188 static inline struct lod_device *dt2lod_dev(struct dt_device *d)
190 LASSERT(lu_device_is_lod(&d->dd_lu_dev));
191 return container_of0(d, struct lod_device, lod_dt_dev);
194 static inline struct lod_object *lu2lod_obj(struct lu_object *o)
196 LASSERT(ergo(o != NULL, lu_device_is_lod(o->lo_dev)));
197 return container_of0(o, struct lod_object, ldo_obj.do_lu);
200 static inline struct lu_object *lod2lu_obj(struct lod_object *obj)
202 return &obj->ldo_obj.do_lu;
205 static inline struct lod_object *lod_obj(const struct lu_object *o)
207 LASSERT(lu_device_is_lod(o->lo_dev));
208 return container_of0(o, struct lod_object, ldo_obj.do_lu);
211 static inline struct lod_object *lod_dt_obj(const struct dt_object *d)
213 return lod_obj(&d->do_lu);
216 static inline struct dt_object* lod_object_child(struct lod_object *o)
218 return container_of0(lu_object_next(lod2lu_obj(o)),
219 struct dt_object, do_lu);
222 static inline struct dt_object *lu2dt_obj(struct lu_object *o)
224 LASSERT(ergo(o != NULL, lu_device_is_dt(o->lo_dev)));
225 return container_of0(o, struct dt_object, do_lu);
228 static inline struct dt_object *dt_object_child(struct dt_object *o)
230 return container_of0(lu_object_next(&(o)->do_lu),
231 struct dt_object, do_lu);
234 extern struct lu_context_key lod_thread_key;
236 static inline struct lod_thread_info *lod_env_info(const struct lu_env *env)
238 struct lod_thread_info *info;
239 info = lu_context_key_get(&env->le_ctx, &lod_thread_key);
244 #define lod_foreach_ost(__dev, index) \
245 if ((__dev)->lod_osts_size > 0) \
246 cfs_foreach_bit((__dev)->lod_ost_bitmap, (index))
249 void lod_getref(struct lod_device *lod);
250 void lod_putref(struct lod_device *lod);
251 int lod_add_device(const struct lu_env *env, struct lod_device *m,
252 char *osp, unsigned index, unsigned gen, int active);
253 int lod_del_device(const struct lu_env *env, struct lod_device *m,
254 char *osp, unsigned index, unsigned gen);
255 int lod_load_striping(const struct lu_env *env, struct lod_object *mo);
256 int lod_get_lov_ea(const struct lu_env *env, struct lod_object *mo);
257 void lod_fix_desc(struct lov_desc *desc);
258 void lod_fix_desc_qos_maxage(__u32 *val);
259 void lod_fix_desc_pattern(__u32 *val);
260 void lod_fix_desc_stripe_count(__u32 *val);
261 void lod_fix_desc_stripe_size(__u64 *val);
262 int lod_pools_init(struct lod_device *m, struct lustre_cfg *cfg);
263 int lod_pools_fini(struct lod_device *m);
264 int lod_parse_striping(const struct lu_env *env, struct lod_object *mo,
265 const struct lu_buf *buf);
266 int lod_initialize_objects(const struct lu_env *env, struct lod_object *mo,
267 struct lov_ost_data_v1 *objs);
268 int lod_store_def_striping(const struct lu_env *env, struct dt_object *dt,
270 int lod_verify_striping(struct lod_device *d, const struct lu_buf *buf, int specific);
271 int lod_generate_and_set_lovea(const struct lu_env *env,
272 struct lod_object *mo, struct thandle *th);
275 int lod_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count);
276 int lod_ost_pool_remove(struct ost_pool *op, __u32 idx);
277 int lod_ost_pool_extend(struct ost_pool *op, unsigned int min_count);
278 struct pool_desc *lod_find_pool(struct lod_device *lod, char *poolname);
279 void lod_pool_putref(struct pool_desc *pool);
280 int lod_ost_pool_free(struct ost_pool *op);
281 int lod_pool_del(struct obd_device *obd, char *poolname);
282 int lod_ost_pool_init(struct ost_pool *op, unsigned int count);
283 extern cfs_hash_ops_t pool_hash_operations;
284 int lod_check_index_in_pool(__u32 idx, struct pool_desc *pool);
285 int lod_pool_new(struct obd_device *obd, char *poolname);
286 int lod_pool_add(struct obd_device *obd, char *poolname, char *ostname);
287 int lod_pool_remove(struct obd_device *obd, char *poolname, char *ostname);
290 int lod_qos_prep_create(const struct lu_env *env, struct lod_object *lo,
291 struct lu_attr *attr, const struct lu_buf *buf,
293 int qos_add_tgt(struct lod_device*, struct lod_ost_desc *);
294 int qos_del_tgt(struct lod_device *, struct lod_ost_desc *);
297 void lprocfs_lod_init_vars(struct lprocfs_static_vars *lvars);
298 int lod_procfs_init(struct lod_device *lod);
299 void lod_procfs_fini(struct lod_device *lod);
302 int lod_object_set_pool(struct lod_object *o, char *pool);
303 int lod_declare_striped_object(const struct lu_env *env, struct dt_object *dt,
304 struct lu_attr *attr,
305 const struct lu_buf *lovea, struct thandle *th);
306 int lod_striping_create(const struct lu_env *env, struct dt_object *dt,
307 struct lu_attr *attr, struct dt_object_format *dof,
309 void lod_object_free_striping(const struct lu_env *env, struct lod_object *lo);