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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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33 * This file is part of Lustre, http://www.lustre.org/
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37 #ifndef _OFD_INTERNAL_H
38 #define _OFD_INTERNAL_H
41 #include <obd_class.h>
42 #include <dt_object.h>
43 #include <lustre_fid.h>
44 #include <lustre_capa.h>
46 #define OFD_INIT_OBJID 0
47 #define OFD_ROCOMPAT_SUPP (0)
48 #define OFD_INCOMPAT_SUPP (OBD_INCOMPAT_GROUPS | OBD_INCOMPAT_OST | \
49 OBD_INCOMPAT_COMMON_LR)
50 #define OFD_MAX_GROUPS 256
52 /* per-client-per-object persistent state (LRU) */
54 cfs_list_t fmd_list; /* linked to fed_mod_list */
55 struct lu_fid fmd_fid; /* FID being written to */
56 __u64 fmd_mactime_xid; /* xid highest {m,a,c}time setattr */
57 cfs_time_t fmd_expire; /* time when the fmd should expire */
58 int fmd_refcount; /* reference counter - list holds 1 */
61 #define OFD_FMD_MAX_NUM_DEFAULT 128
62 #define OFD_FMD_MAX_AGE_DEFAULT ((obd_timeout + 10) * CFS_HZ)
65 LPROC_OFD_READ_BYTES = 0,
66 LPROC_OFD_WRITE_BYTES = 1,
71 struct dt_device ofd_dt_dev;
72 struct dt_device *ofd_osd;
73 struct dt_device_param ofd_dt_conf;
74 /* DLM name-space for meta-data locks maintained by this server */
75 struct ldlm_namespace *ofd_namespace;
78 struct lu_target ofd_lut;
79 struct dt_object *ofd_last_group_file;
80 struct dt_object *ofd_health_check_file;
85 obd_id ofd_last_objids[OFD_MAX_GROUPS];
86 cfs_mutex_t ofd_create_locks[OFD_MAX_GROUPS];
87 struct dt_object *ofd_lastid_obj[OFD_MAX_GROUPS];
88 cfs_spinlock_t ofd_objid_lock;
90 /* protect all statfs-related counters */
91 cfs_spinlock_t ofd_osfs_lock;
92 /* statfs optimization: we cache a bit */
93 struct obd_statfs ofd_osfs;
96 /* writes which might be be accounted twice in ofd_osfs.os_bavail */
97 obd_size ofd_osfs_unstable;
99 /* counters used during statfs update, protected by ofd_osfs_lock.
100 * record when some statfs refresh are in progress */
101 int ofd_statfs_inflight;
102 /* track writes completed while statfs refresh is underway.
103 * tracking is only effective when ofd_statfs_inflight > 1 */
104 obd_size ofd_osfs_inflight;
106 /* grants: all values in bytes */
107 /* grant lock to protect all grant counters */
108 cfs_spinlock_t ofd_grant_lock;
109 /* total amount of dirty data reported by clients in incoming obdo */
110 obd_size ofd_tot_dirty;
111 /* sum of filesystem space granted to clients for async writes */
112 obd_size ofd_tot_granted;
113 /* grant used by I/Os in progress (between prepare and commit) */
114 obd_size ofd_tot_pending;
115 /* free space threshold over which we stop granting space to clients
116 * ofd_grant_ratio is stored as a fixed-point fraction using
117 * OFD_GRANT_RATIO_SHIFT of the remaining free space, not in percentage
120 /* number of clients using grants */
121 int ofd_tot_granted_clients;
123 /* ofd mod data: ofd_device wide values */
124 int ofd_fmd_max_num; /* per ofd ofd_mod_data */
125 cfs_duration_t ofd_fmd_max_age; /* time to fmd expiry */
127 cfs_spinlock_t ofd_flags_lock;
128 unsigned long ofd_raid_degraded:1,
129 /* sync journal on writes */
131 /* sync on lock cancel */
132 ofd_sync_lock_cancel:2,
133 /* shall we grant space to clients not
134 * supporting OBD_CONNECT_GRANT_PARAM? */
135 ofd_grant_compat_disable:1;
137 struct lu_site ofd_site;
140 static inline struct ofd_device *ofd_dev(struct lu_device *d)
142 return container_of0(d, struct ofd_device, ofd_dt_dev.dd_lu_dev);
145 static inline struct obd_device *ofd_obd(struct ofd_device *ofd)
147 return ofd->ofd_dt_dev.dd_lu_dev.ld_obd;
150 static inline struct ofd_device *ofd_exp(struct obd_export *exp)
152 return ofd_dev(exp->exp_obd->obd_lu_dev);
155 static inline char *ofd_name(struct ofd_device *ofd)
157 return ofd->ofd_dt_dev.dd_lu_dev.ld_obd->obd_name;
161 struct lu_object_header ofo_header;
162 struct dt_object ofo_obj;
165 static inline struct ofd_object *ofd_obj(struct lu_object *o)
167 return container_of0(o, struct ofd_object, ofo_obj.do_lu);
171 * Common data shared by obdofd-level handlers. This is allocated per-thread
172 * to reduce stack consumption.
174 struct ofd_thread_info {
175 const struct lu_env *fti_env;
177 struct obd_export *fti_exp;
178 struct lu_fid fti_fid;
179 struct lu_attr fti_attr;
181 char name[64]; /* for ofd_init0() */
182 struct obd_statfs osfs; /* for obdofd_statfs() */
185 struct dt_object_format fti_dof;
186 struct lu_buf fti_buf;
189 /* Space used by the I/O, used by grant code */
190 unsigned long fti_used;
193 extern void target_recovery_fini(struct obd_device *obd);
194 extern void target_recovery_init(struct lu_target *lut, svc_handler_t handler);
197 int ofd_update_capa_key(struct ofd_device *ofd, struct lustre_capa_key *key);
198 int ofd_auth_capa(struct obd_export *exp, struct lu_fid *fid, obd_seq seq,
199 struct lustre_capa *capa, __u64 opc);
200 void ofd_free_capa_keys(struct ofd_device *ofd);
203 extern struct lu_context_key ofd_thread_key;
206 extern struct obd_ops ofd_obd_ops;
207 int ofd_statfs_internal(const struct lu_env *env, struct ofd_device *ofd,
208 struct obd_statfs *osfs, __u64 max_age,
212 obd_id ofd_last_id(struct ofd_device *ofd, obd_seq seq);
213 int ofd_group_load(const struct lu_env *env, struct ofd_device *ofd, int);
214 int ofd_fs_setup(const struct lu_env *env, struct ofd_device *ofd,
215 struct obd_device *obd);
216 void ofd_fs_cleanup(const struct lu_env *env, struct ofd_device *ofd);
219 void lprocfs_ofd_init_vars(struct lprocfs_static_vars *lvars);
220 int lproc_ofd_attach_seqstat(struct obd_device *dev);
221 extern struct file_operations ofd_per_nid_stats_fops;
224 #define OFD_GRANT_RATIO_SHIFT 8
225 static inline __u64 ofd_grant_reserved(struct ofd_device *ofd, obd_size bavail)
227 return (bavail * ofd->ofd_grant_ratio) >> OFD_GRANT_RATIO_SHIFT;
230 static inline int ofd_grant_ratio_conv(int percentage)
232 return (percentage << OFD_GRANT_RATIO_SHIFT) / 100;
235 static inline int ofd_grant_param_supp(struct obd_export *exp)
237 return !!(exp->exp_connect_flags & OBD_CONNECT_GRANT_PARAM);
240 /* Blocksize used for client not supporting OBD_CONNECT_GRANT_PARAM.
241 * That's 4KB=2^12 which is the biggest block size known to work whatever
242 * the client's page size is. */
243 #define COMPAT_BSIZE_SHIFT 12
244 static inline int ofd_grant_compat(struct obd_export *exp,
245 struct ofd_device *ofd)
247 /* Clients which don't support OBD_CONNECT_GRANT_PARAM cannot handle
248 * a block size > page size and consume CFS_PAGE_SIZE of grant when
249 * dirtying a page regardless of the block size */
250 return !!(ofd_obd(ofd)->obd_self_export != exp &&
251 ofd->ofd_blockbits > COMPAT_BSIZE_SHIFT &&
252 !ofd_grant_param_supp(exp));
255 static inline int ofd_grant_prohibit(struct obd_export *exp,
256 struct ofd_device *ofd)
258 /* When ofd_grant_compat_disable is set, we don't grant any space to
259 * clients not supporting OBD_CONNECT_GRANT_PARAM.
260 * Otherwise, space granted to such a client is inflated since it
261 * consumes CFS_PAGE_SIZE of grant space per block */
262 return !!(ofd_grant_compat(exp, ofd) && ofd->ofd_grant_compat_disable);
265 void ofd_grant_sanity_check(struct obd_device *obd, const char *func);
266 long ofd_grant_connect(const struct lu_env *env, struct obd_export *exp,
268 void ofd_grant_discard(struct obd_export *exp);
269 void ofd_grant_prepare_read(const struct lu_env *env, struct obd_export *exp,
271 void ofd_grant_prepare_write(const struct lu_env *env, struct obd_export *exp,
272 struct obdo *oa, struct niobuf_remote *rnb,
274 void ofd_grant_commit(const struct lu_env *env, struct obd_export *exp, int rc);
275 int ofd_grant_create(const struct lu_env *env, struct obd_export *exp, int *nr);
278 int ofd_fmd_init(void);
279 void ofd_fmd_exit(void);
280 struct ofd_mod_data *ofd_fmd_find(struct obd_export *exp,
282 struct ofd_mod_data *ofd_fmd_get(struct obd_export *exp,
284 void ofd_fmd_put(struct obd_export *exp, struct ofd_mod_data *fmd);
285 void ofd_fmd_expire(struct obd_export *exp);
286 void ofd_fmd_cleanup(struct obd_export *exp);
288 void ofd_fmd_drop(struct obd_export *exp, struct lu_fid *fid);
290 #define ofd_fmd_drop(exp, fid) do {} while (0)
293 static inline struct ofd_thread_info * ofd_info(const struct lu_env *env)
295 struct ofd_thread_info *info;
297 info = lu_context_key_get(&env->le_ctx, &ofd_thread_key);
299 LASSERT(info->fti_env);
300 LASSERT(info->fti_env == env);
304 static inline struct ofd_thread_info * ofd_info_init(const struct lu_env *env,
305 struct obd_export *exp)
307 struct ofd_thread_info *info;
309 info = lu_context_key_get(&env->le_ctx, &ofd_thread_key);
311 LASSERT(info->fti_exp == NULL);
312 LASSERT(info->fti_env == NULL);
319 /* sync on lock cancel is useless when we force a journal flush,
320 * and if we enable async journal commit, we should also turn on
321 * sync on lock cancel if it is not enabled already. */
322 static inline void ofd_slc_set(struct ofd_device *ofd)
324 if (ofd->ofd_syncjournal == 1)
325 ofd->ofd_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
326 else if (ofd->ofd_sync_lock_cancel == NEVER_SYNC_ON_CANCEL)
327 ofd->ofd_sync_lock_cancel = ALWAYS_SYNC_ON_CANCEL;
330 /* niobuf_local has no rnb_ prefix in master */
331 #define rnb_offset offset
332 #define rnb_flags flags
335 #endif /* _OFD_INTERNAL_H */