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, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #ifndef _MGS_INTERNAL_H
34 #define _MGS_INTERNAL_H
36 #include <libcfs/libcfs.h>
37 #include <lustre_log.h>
38 #include <lustre_export.h>
39 #include <lustre_nodemap.h>
40 #include <dt_object.h>
42 #define MGSSELF_NAME "_mgs"
44 #define MGS_SERVICE_WATCHDOG_FACTOR 2
46 /* -- imperative recovery control data structures -- */
51 struct mgs_nidtbl_target {
52 struct list_head mnt_list;
53 struct mgs_nidtbl *mnt_fs;
55 int mnt_type; /* OST or MDT */
56 cfs_time_t mnt_last_active;
57 struct mgs_target_info mnt_mti;
67 #define IR_STRINGS { "full", "startup", "disabled", "partial" }
74 * maintain fs client nodes of mgs.
77 struct fs_db *mfc_fsdb;
79 * Where the fs client comes from.
81 struct obd_export *mfc_export;
83 * list of fs clients from the same export,
84 * protected by mgs_export_data->med_lock
86 struct list_head mfc_export_list;
88 * list of fs clients in the same fsdb, protected by fsdb->fsdb_mutex
90 struct list_head mfc_fsdb_list;
91 unsigned mfc_ir_capable:1;
95 struct fs_db *mn_fsdb;
96 struct file *mn_version_file;
100 struct list_head mn_targets;
103 struct mgs_tgt_srpc_conf {
104 struct mgs_tgt_srpc_conf *mtsc_next;
106 struct sptlrpc_rule_set mtsc_rset;
109 #define INDEX_MAP_SIZE 8192 /* covers indicies to FFFF */
111 #define FSDB_LOG_EMPTY (0) /* missing client log */
112 #define FSDB_OLDLOG14 (1) /* log starts in old (1.4) style */
113 #define FSDB_REVOKING_LOCK (2) /* DLM lock is being revoked */
114 #define FSDB_MGS_SELF (3) /* for '_mgs', used by sptlrpc */
115 #define FSDB_OSCNAME18 (4) /* old 1.8 style OSC naming */
116 #define FSDB_UDESC (5) /* sptlrpc user desc, will be obsolete */
117 #define FSDB_REVOKING_PARAMS (6) /* DLM lock is being revoked */
121 struct list_head fsdb_list; /* list of databases */
122 struct mutex fsdb_mutex;
123 void *fsdb_ost_index_map; /* bitmap of used indicies */
124 void *fsdb_mdt_index_map; /* bitmap of used indicies */
126 char *fsdb_clilov; /* COMPAT_146 client lov name */
128 unsigned long fsdb_flags;
131 /* in-memory copy of the srpc rules, guarded by fsdb_lock */
132 struct sptlrpc_rule_set fsdb_srpc_gen;
133 struct mgs_tgt_srpc_conf *fsdb_srpc_tgt;
135 /* list of fs clients, mgs_fsc. protected by mgs_mutex */
136 struct list_head fsdb_clients;
137 int fsdb_nonir_clients;
140 /* Target NIDs Table */
141 struct mgs_nidtbl fsdb_nidtbl;
143 /* async thread to notify clients */
144 struct mgs_device *fsdb_mgs;
145 wait_queue_head_t fsdb_notify_waitq;
146 struct completion fsdb_notify_comp;
147 cfs_time_t fsdb_notify_start;
148 atomic_t fsdb_notify_phase;
149 volatile unsigned int fsdb_notify_async:1,
152 unsigned int fsdb_notify_total;
153 unsigned int fsdb_notify_max;
154 unsigned int fsdb_notify_count;
158 struct dt_device mgs_dt_dev;
159 struct ptlrpc_service *mgs_service;
160 struct dt_device *mgs_bottom;
161 struct obd_export *mgs_bottom_exp;
162 struct dt_object *mgs_configs_dir;
163 struct dt_object *mgs_nidtbl_dir;
164 struct list_head mgs_fs_db_list;
165 spinlock_t mgs_lock; /* covers mgs_fs_db_list */
166 struct proc_dir_entry *mgs_proc_live;
167 struct proc_dir_entry *mgs_proc_osd;
168 struct proc_dir_entry *mgs_proc_fstype;
169 struct proc_dir_entry *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;
174 struct mutex mgs_health_mutex;
175 struct lu_target mgs_lut;
178 /* this is a top object */
180 struct lu_object_header mgo_header;
181 struct dt_object mgo_obj;
186 int mgs_init_fsdb_list(struct mgs_device *mgs);
187 int mgs_cleanup_fsdb_list(struct mgs_device *mgs);
188 int mgs__mgs_fsdb_setup(const struct lu_env *env, struct mgs_device *mgs,
190 int mgs_params_fsdb_setup(const struct lu_env *env, struct mgs_device *mgs,
192 int mgs_params_fsdb_cleanup(const struct lu_env *env, struct mgs_device *mgs);
193 int mgs_find_or_make_fsdb(const struct lu_env *env, struct mgs_device *mgs,
194 char *name, struct fs_db **dbh);
195 struct fs_db *mgs_find_fsdb(struct mgs_device *mgs, char *fsname);
196 int mgs_get_fsdb_srpc_from_llog(const struct lu_env *env,
197 struct mgs_device *mgs, struct fs_db *fsdb);
198 int mgs_check_index(const struct lu_env *env, struct mgs_device *mgs,
199 struct mgs_target_info *mti);
200 int mgs_write_log_target(const struct lu_env *env, struct mgs_device *mgs,
201 struct mgs_target_info *mti, struct fs_db *fsdb);
202 int mgs_replace_nids(const struct lu_env *env, struct mgs_device *mgs,
203 char *devname, char *nids);
204 int mgs_erase_log(const struct lu_env *env, struct mgs_device *mgs,
206 int mgs_erase_logs(const struct lu_env *env, struct mgs_device *mgs,
208 int mgs_setparam(const struct lu_env *env, struct mgs_device *mgs,
209 struct lustre_cfg *lcfg, char *fsname);
210 int mgs_list_logs(const struct lu_env *env, struct mgs_device *mgs,
211 struct obd_ioctl_data *data);
212 int mgs_pool_cmd(const struct lu_env *env, struct mgs_device *mgs,
213 enum lcfg_command_type cmd, char *poolname, char *fsname,
215 int mgs_nodemap_cmd(const struct lu_env *env, struct mgs_device *mgs,
216 enum lcfg_command_type cmd, const char *nodemap_name,
220 int mgs_get_lock(struct obd_device *obd, struct ldlm_res_id *res,
221 struct lustre_handle *lockh);
222 int mgs_put_lock(struct lustre_handle *lockh);
223 void mgs_revoke_lock(struct mgs_device *mgs, struct fs_db *fsdb, int type);
226 int mgs_ir_update(const struct lu_env *env, struct mgs_device *mgs,
227 struct mgs_target_info *mti);
228 int mgs_ir_init_fs(const struct lu_env *env, struct mgs_device *mgs,
230 void mgs_ir_fini_fs(struct mgs_device *mgs, struct fs_db *fsdb);
231 void mgs_ir_notify_complete(struct fs_db *fsdb);
232 int mgs_get_ir_logs(struct ptlrpc_request *req);
233 int lprocfs_wr_ir_state(struct file *file, const char __user *buffer,
234 size_t count, void *data);
235 int lprocfs_rd_ir_state(struct seq_file *seq, void *data);
237 lprocfs_ir_timeout_seq_write(struct file *file, const char __user *buffer,
238 size_t count, loff_t *off);
239 int lprocfs_ir_timeout_seq_show(struct seq_file *seq, void *data);
240 void mgs_fsc_cleanup(struct obd_export *exp);
241 void mgs_fsc_cleanup_by_fsdb(struct fs_db *fsdb);
242 int mgs_fsc_attach(const struct lu_env *env, struct obd_export *exp,
246 int mgs_export_stats_init(struct obd_device *obd, struct obd_export *exp,
248 int mgs_client_free(struct obd_export *exp);
249 int mgs_fs_setup(const struct lu_env *env, struct mgs_device *m);
250 int mgs_fs_cleanup(const struct lu_env *env, struct mgs_device *m);
252 #ifdef CONFIG_PROC_FS
253 int lproc_mgs_setup(struct mgs_device *mgs, const char *osd_name);
254 void lproc_mgs_cleanup(struct mgs_device *mgs);
255 int lproc_mgs_add_live(struct mgs_device *mgs, struct fs_db *fsdb);
256 int lproc_mgs_del_live(struct mgs_device *mgs, struct fs_db *fsdb);
258 static inline int lproc_mgs_setup(struct mgs_device *mgs, const char *osd_name)
260 static inline void lproc_mgs_cleanup(struct mgs_device *mgs)
262 static inline int lproc_mgs_add_live(struct mgs_device *mgs, struct fs_db *fsdb)
264 static inline int lproc_mgs_del_live(struct mgs_device *mgs, struct fs_db *fsdb)
268 /* mgs/lproc_mgs.c */
270 LPROC_MGS_CONNECT = 0,
271 LPROC_MGS_DISCONNECT,
273 LPROC_MGS_TARGET_REG,
274 LPROC_MGS_TARGET_DEL,
277 void mgs_counter_incr(struct obd_export *exp, int opcode);
278 void mgs_stats_counter_init(struct lprocfs_stats *stats);
281 struct mgs_target_info *comp_tmti;
282 struct mgs_target_info *comp_mti;
283 struct fs_db *comp_fsdb;
284 struct obd_device *comp_obd;
287 struct mgs_thread_info {
288 struct lustre_cfg_bufs mgi_bufs;
289 char mgi_fsname[MTI_NAME_MAXLEN];
290 struct cfg_marker mgi_marker;
291 struct temp_comp mgi_comp;
294 extern struct lu_context_key mgs_thread_key;
296 static inline struct mgs_thread_info *mgs_env_info(const struct lu_env *env)
298 struct mgs_thread_info *info;
301 info = lu_context_key_get(&env->le_ctx, &mgs_thread_key);
303 rc = lu_env_refill((struct lu_env *)env);
306 info = lu_context_key_get(&env->le_ctx, &mgs_thread_key);
308 LASSERT(info != NULL);
312 extern const struct lu_device_operations mgs_lu_ops;
314 static inline int lu_device_is_mgs(struct lu_device *d)
316 return ergo(d != NULL && d->ld_ops != NULL, d->ld_ops == &mgs_lu_ops);
319 static inline struct mgs_device* lu2mgs_dev(struct lu_device *d)
321 LASSERT(lu_device_is_mgs(d));
322 return container_of0(d, struct mgs_device, mgs_dt_dev.dd_lu_dev);
325 static inline struct mgs_device *exp2mgs_dev(struct obd_export *exp)
327 return lu2mgs_dev(exp->exp_obd->obd_lu_dev);
330 static inline struct lu_device *mgs2lu_dev(struct mgs_device *d)
332 return (&d->mgs_dt_dev.dd_lu_dev);
335 static inline struct mgs_device *dt2mgs_dev(struct dt_device *d)
337 LASSERT(lu_device_is_mgs(&d->dd_lu_dev));
338 return container_of0(d, struct mgs_device, mgs_dt_dev);
341 static inline struct mgs_object *lu2mgs_obj(struct lu_object *o)
343 LASSERT(ergo(o != NULL, lu_device_is_mgs(o->lo_dev)));
344 return container_of0(o, struct mgs_object, mgo_obj.do_lu);
347 static inline struct lu_object *mgs2lu_obj(struct mgs_object *obj)
349 return &obj->mgo_obj.do_lu;
352 static inline struct mgs_object *mgs_obj(const struct lu_object *o)
354 LASSERT(lu_device_is_mgs(o->lo_dev));
355 return container_of0(o, struct mgs_object, mgo_obj.do_lu);
358 static inline struct mgs_object *dt2mgs_obj(const struct dt_object *d)
360 return mgs_obj(&d->do_lu);
363 static inline struct dt_object* mgs_object_child(struct mgs_object *o)
365 return container_of0(lu_object_next(mgs2lu_obj(o)),
366 struct dt_object, do_lu);
369 struct mgs_direntry {
370 struct list_head mde_list;
375 static inline void mgs_direntry_free(struct mgs_direntry *de)
377 LASSERT(list_empty(&de->mde_list));
379 LASSERT(de->mde_len);
380 OBD_FREE(de->mde_name, de->mde_len);
385 static inline struct mgs_direntry *mgs_direntry_alloc(int len)
387 struct mgs_direntry *de;
393 OBD_ALLOC(de->mde_name, len);
394 if (de->mde_name == NULL) {
400 INIT_LIST_HEAD(&de->mde_list);
406 int class_dentry_readdir(const struct lu_env *env, struct mgs_device *mgs,
407 struct list_head *list);
409 #endif /* _MGS_INTERNAL_H */