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27 * Copyright (c) 2007, 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 _MGS_INTERNAL_H
38 #define _MGS_INTERNAL_H
40 #include <libcfs/libcfs.h>
41 #include <lustre_log.h>
42 #include <lustre_export.h>
43 #include <dt_object.h>
45 #define MGSSELF_NAME "_mgs"
47 #define MGS_SERVICE_WATCHDOG_FACTOR 2
49 /* -- imperative recovery control data structures -- */
54 struct mgs_nidtbl_target {
56 struct mgs_nidtbl *mnt_fs;
58 int mnt_type; /* OST or MDT */
59 cfs_time_t mnt_last_active;
60 struct mgs_target_info mnt_mti;
70 #define IR_STRINGS { "full", "startup", "disabled", "partial" }
77 * maintain fs client nodes of mgs.
80 struct fs_db *mfc_fsdb;
82 * Where the fs client comes from.
84 struct obd_export *mfc_export;
86 * list of fs clients from the same export,
87 * protected by mgs_export_data->med_lock
89 cfs_list_t mfc_export_list;
91 * list of fs clients in the same fsdb, protected by fsdb->fsdb_mutex
93 cfs_list_t mfc_fsdb_list;
94 unsigned mfc_ir_capable:1;
98 struct fs_db *mn_fsdb;
99 struct file *mn_version_file;
100 struct mutex mn_lock;
103 cfs_list_t mn_targets;
106 struct mgs_tgt_srpc_conf {
107 struct mgs_tgt_srpc_conf *mtsc_next;
109 struct sptlrpc_rule_set mtsc_rset;
112 #define INDEX_MAP_SIZE 8192 /* covers indicies to FFFF */
114 #define FSDB_LOG_EMPTY (0) /* missing client log */
115 #define FSDB_OLDLOG14 (1) /* log starts in old (1.4) style */
116 #define FSDB_REVOKING_LOCK (2) /* DLM lock is being revoked */
117 #define FSDB_MGS_SELF (3) /* for '_mgs', used by sptlrpc */
118 #define FSDB_OSCNAME18 (4) /* old 1.8 style OSC naming */
119 #define FSDB_UDESC (5) /* sptlrpc user desc, will be obsolete */
123 cfs_list_t fsdb_list; /* list of databases */
124 struct mutex fsdb_mutex;
125 void *fsdb_ost_index_map; /* bitmap of used indicies */
126 void *fsdb_mdt_index_map; /* bitmap of used indicies */
128 char *fsdb_clilov; /* COMPAT_146 client lov name */
130 unsigned long fsdb_flags;
133 /* in-memory copy of the srpc rules, guarded by fsdb_lock */
134 struct sptlrpc_rule_set fsdb_srpc_gen;
135 struct mgs_tgt_srpc_conf *fsdb_srpc_tgt;
137 /* list of fs clients, mgs_fsc. protected by mgs_mutex */
138 cfs_list_t fsdb_clients;
139 int fsdb_nonir_clients;
142 /* Target NIDs Table */
143 struct mgs_nidtbl fsdb_nidtbl;
145 /* async thread to notify clients */
146 struct mgs_device *fsdb_mgs;
147 cfs_waitq_t fsdb_notify_waitq;
148 struct completion fsdb_notify_comp;
149 cfs_time_t fsdb_notify_start;
150 cfs_atomic_t fsdb_notify_phase;
151 volatile int fsdb_notify_async:1,
154 unsigned int fsdb_notify_total;
155 unsigned int fsdb_notify_max;
156 unsigned int fsdb_notify_count;
160 struct dt_device mgs_dt_dev;
161 struct ptlrpc_service *mgs_service;
162 struct dt_device *mgs_bottom;
163 struct obd_export *mgs_bottom_exp;
164 struct dt_object *mgs_configs_dir;
165 struct dt_object *mgs_nidtbl_dir;
166 cfs_list_t mgs_fs_db_list;
167 spinlock_t mgs_lock; /* covers mgs_fs_db_list */
168 cfs_proc_dir_entry_t *mgs_proc_live;
169 cfs_proc_dir_entry_t *mgs_proc_mntdev;
170 cfs_time_t mgs_start_time;
171 struct obd_device *mgs_obd;
172 struct local_oid_storage *mgs_los;
173 struct mutex mgs_mutex;
176 /* this is a top object */
178 struct lu_object_header mgo_header;
179 struct dt_object mgo_obj;
184 int mgs_init_fsdb_list(struct mgs_device *mgs);
185 int mgs_cleanup_fsdb_list(struct mgs_device *mgs);
186 int mgs_find_or_make_fsdb(const struct lu_env *env, struct mgs_device *mgs, char *name,
188 struct fs_db *mgs_find_fsdb(struct mgs_device *mgs, char *fsname);
189 int mgs_get_fsdb_srpc_from_llog(const struct lu_env *env, struct mgs_device *mgs, struct fs_db *fsdb);
190 int mgs_check_index(const struct lu_env *env, struct mgs_device *mgs, struct mgs_target_info *mti);
191 int mgs_check_failnid(const struct lu_env *env, struct mgs_device *mgs, struct mgs_target_info *mti);
192 int mgs_write_log_target(const struct lu_env *env, struct mgs_device *mgs, struct mgs_target_info *mti,
194 int mgs_erase_log(const struct lu_env *env, struct mgs_device *mgs,
196 int mgs_erase_logs(const struct lu_env *env, struct mgs_device *mgs,
198 int mgs_setparam(const struct lu_env *env, struct mgs_device *mgs,
199 struct lustre_cfg *lcfg, char *fsname);
200 int mgs_list_logs(const struct lu_env *env, struct mgs_device *mgs,
201 struct obd_ioctl_data *data);
202 int mgs_pool_cmd(const struct lu_env *env, struct mgs_device *mgs,
203 enum lcfg_command_type cmd, char *poolname, char *fsname,
207 int mgs_get_lock(struct obd_device *obd, struct ldlm_res_id *res,
208 struct lustre_handle *lockh);
209 int mgs_put_lock(struct lustre_handle *lockh);
210 void mgs_revoke_lock(struct mgs_device *mgs, struct fs_db *fsdb, int type);
213 int mgs_ir_update(const struct lu_env *env, struct mgs_device *mgs,
214 struct mgs_target_info *mti);
215 int mgs_ir_init_fs(const struct lu_env *env, struct mgs_device *mgs,
217 void mgs_ir_fini_fs(struct mgs_device *mgs, struct fs_db *fsdb);
218 void mgs_ir_notify_complete(struct fs_db *fsdb);
219 int mgs_get_ir_logs(struct ptlrpc_request *req);
220 int lprocfs_wr_ir_state(struct file *file, const char *buffer,
221 unsigned long count, void *data);
222 int lprocfs_rd_ir_state(struct seq_file *seq, void *data);
223 int lprocfs_wr_ir_timeout(struct file *file, const char *buffer,
224 unsigned long count, void *data);
225 int lprocfs_rd_ir_timeout(char *page, char **start, off_t off, int count,
226 int *eof, void *data);
227 void mgs_fsc_cleanup(struct obd_export *exp);
228 void mgs_fsc_cleanup_by_fsdb(struct fs_db *fsdb);
229 int mgs_fsc_attach(const struct lu_env *env, struct obd_export *exp,
233 int mgs_export_stats_init(struct obd_device *obd, struct obd_export *exp,
235 int mgs_client_free(struct obd_export *exp);
236 int mgs_fs_setup(const struct lu_env *env, struct mgs_device *m);
237 int mgs_fs_cleanup(const struct lu_env *env, struct mgs_device *m);
239 #define strsuf(buf, suffix) (strcmp((buf)+strlen(buf)-strlen(suffix), (suffix)))
241 int lproc_mgs_setup(struct mgs_device *mgs, char *osd_name);
242 int lproc_mgs_cleanup(struct mgs_device *mgs);
243 int lproc_mgs_add_live(struct mgs_device *mgs, struct fs_db *fsdb);
244 int lproc_mgs_del_live(struct mgs_device *mgs, struct fs_db *fsdb);
245 void lprocfs_mgs_init_vars(struct lprocfs_static_vars *lvars);
247 static inline int lproc_mgs_setup(struct mgs_device *mgs)
249 static inline int lproc_mgs_cleanup(struct mgs_device *mgs)
251 static inline int lproc_mgs_add_live(struct mgs_device *mgs, struct fs_db *fsdb)
253 static inline int lproc_mgs_del_live(struct mgs_device *mgs, struct fs_db *fsdb)
255 static void lprocfs_mgs_init_vars(struct lprocfs_static_vars *lvars)
257 memset(lvars, 0, sizeof(*lvars));
261 /* mgs/lproc_mgs.c */
263 LPROC_MGS_CONNECT = 0,
264 LPROC_MGS_DISCONNECT,
266 LPROC_MGS_TARGET_REG,
267 LPROC_MGS_TARGET_DEL,
270 void mgs_counter_incr(struct obd_export *exp, int opcode);
271 void mgs_stats_counter_init(struct lprocfs_stats *stats);
274 struct mgs_target_info *comp_tmti;
275 struct mgs_target_info *comp_mti;
276 struct fs_db *comp_fsdb;
277 struct obd_device *comp_obd;
280 struct mgs_thread_info {
281 struct lustre_cfg_bufs mgi_bufs;
282 char mgi_fsname[MTI_NAME_MAXLEN];
283 struct cfg_marker mgi_marker;
284 struct temp_comp mgi_comp;
287 extern struct lu_context_key mgs_thread_key;
289 static inline struct mgs_thread_info *mgs_env_info(const struct lu_env *env)
291 struct mgs_thread_info *info;
293 info = lu_context_key_get(&env->le_ctx, &mgs_thread_key);
294 LASSERT(info != NULL);
298 extern const struct lu_device_operations mgs_lu_ops;
300 static inline int lu_device_is_mgs(struct lu_device *d)
302 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mgs_lu_ops);
305 static inline struct mgs_device* lu2mgs_dev(struct lu_device *d)
307 LASSERT(lu_device_is_mgs(d));
308 return container_of0(d, struct mgs_device, mgs_dt_dev.dd_lu_dev);
311 static inline struct mgs_device *exp2mgs_dev(struct obd_export *exp)
313 return lu2mgs_dev(exp->exp_obd->obd_lu_dev);
316 static inline struct lu_device *mgs2lu_dev(struct mgs_device *d)
318 return (&d->mgs_dt_dev.dd_lu_dev);
321 static inline struct mgs_device *dt2mgs_dev(struct dt_device *d)
323 LASSERT(lu_device_is_mgs(&d->dd_lu_dev));
324 return container_of0(d, struct mgs_device, mgs_dt_dev);
327 static inline struct mgs_object *lu2mgs_obj(struct lu_object *o)
329 LASSERT(ergo(o != NULL, lu_device_is_mgs(o->lo_dev)));
330 return container_of0(o, struct mgs_object, mgo_obj.do_lu);
333 static inline struct lu_object *mgs2lu_obj(struct mgs_object *obj)
335 return &obj->mgo_obj.do_lu;
338 static inline struct mgs_object *mgs_obj(const struct lu_object *o)
340 LASSERT(lu_device_is_mgs(o->lo_dev));
341 return container_of0(o, struct mgs_object, mgo_obj.do_lu);
344 static inline struct mgs_object *dt2mgs_obj(const struct dt_object *d)
346 return mgs_obj(&d->do_lu);
349 static inline struct dt_object* mgs_object_child(struct mgs_object *o)
351 return container_of0(lu_object_next(mgs2lu_obj(o)),
352 struct dt_object, do_lu);
355 static inline struct dt_object *dt_object_child(struct dt_object *o)
357 return container_of0(lu_object_next(&(o)->do_lu),
358 struct dt_object, do_lu);
360 struct mgs_direntry {
366 static inline void mgs_direntry_free(struct mgs_direntry *de)
370 OBD_FREE(de->name, de->len);
375 static inline struct mgs_direntry *mgs_direntry_alloc(int len)
377 struct mgs_direntry *de;
383 OBD_ALLOC(de->name, len);
384 if (de->name == NULL) {
395 int class_dentry_readdir(const struct lu_env *env, struct mgs_device *mgs,
398 #endif /* _MGS_INTERNAL_H */