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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
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30 * Copyright (c) 2011, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef _MGS_INTERNAL_H
38 #define _MGS_INTERNAL_H
41 # include <linux/fs.h>
43 #include <libcfs/libcfs.h>
44 #include <lustre/lustre_idl.h>
45 #include <lustre_lib.h>
46 #include <lustre_dlm.h>
47 #include <lustre_log.h>
48 #include <lustre_export.h>
50 #define MGSSELF_NAME "_mgs"
52 #define MGS_SERVICE_WATCHDOG_FACTOR 2
54 /* -- imperative recovery control data structures -- */
59 struct mgs_nidtbl_target {
61 struct mgs_nidtbl *mnt_fs;
63 int mnt_type; /* OST or MDT */
64 cfs_time_t mnt_last_active;
65 struct mgs_target_info mnt_mti;
75 #define IR_STRINGS { "full", "startup", "disabled", "partial" }
82 * maintain fs client nodes of mgs.
85 struct fs_db *mfc_fsdb;
87 * Where the fs client comes from.
89 struct obd_export *mfc_export;
91 * list of fs clients from the same export,
92 * protected by mgs_export_data->med_lock
94 cfs_list_t mfc_export_list;
96 * list of fs clients in the same fsdb, protected by fsdb->fsdb_mutex
98 cfs_list_t mfc_fsdb_list;
99 unsigned mfc_ir_capable:1;
103 struct fs_db *mn_fsdb;
104 struct file *mn_version_file;
108 cfs_list_t mn_targets;
111 struct mgs_tgt_srpc_conf {
112 struct mgs_tgt_srpc_conf *mtsc_next;
114 struct sptlrpc_rule_set mtsc_rset;
117 #define INDEX_MAP_SIZE 8192 /* covers indicies to FFFF */
119 #define FSDB_LOG_EMPTY (0) /* missing client log */
120 #define FSDB_OLDLOG14 (1) /* log starts in old (1.4) style */
121 #define FSDB_REVOKING_LOCK (2) /* DLM lock is being revoked */
122 #define FSDB_MGS_SELF (3) /* for '_mgs', used by sptlrpc */
123 #define FSDB_OSCNAME18 (4) /* old 1.8 style OSC naming */
124 #define FSDB_UDESC (5) /* sptlrpc user desc, will be obsolete */
128 cfs_list_t fsdb_list; /* list of databases */
129 cfs_mutex_t fsdb_mutex;
130 void *fsdb_ost_index_map; /* bitmap of used indicies */
131 void *fsdb_mdt_index_map; /* bitmap of used indicies */
133 /* COMPAT_146 these items must be recorded out of the old client log */
134 char *fsdb_clilov; /* COMPAT_146 client lov name */
136 char *fsdb_mdtlov; /* COMPAT_146 mds lov name */
138 char *fsdb_mdc; /* COMPAT_146 mdc name */
140 unsigned long fsdb_flags;
143 /* in-memory copy of the srpc rules, guarded by fsdb_lock */
144 struct sptlrpc_rule_set fsdb_srpc_gen;
145 struct mgs_tgt_srpc_conf *fsdb_srpc_tgt;
147 /* list of fs clients, mgs_fsc. protected by mgs_mutex */
148 cfs_list_t fsdb_clients;
149 int fsdb_nonir_clients;
152 /* Target NIDs Table */
153 struct mgs_nidtbl fsdb_nidtbl;
155 /* async thread to notify clients */
156 struct obd_device *fsdb_obd;
157 cfs_waitq_t fsdb_notify_waitq;
158 cfs_completion_t fsdb_notify_comp;
159 cfs_time_t fsdb_notify_start;
160 cfs_atomic_t fsdb_notify_phase;
161 volatile int fsdb_notify_async:1,
164 unsigned int fsdb_notify_total;
165 unsigned int fsdb_notify_max;
166 unsigned int fsdb_notify_count;
170 int class_dentry_readdir(struct obd_device *obd, struct dentry *dir,
171 struct vfsmount *inmnt,
172 cfs_list_t *dentry_list);
174 int mgs_init_fsdb_list(struct obd_device *obd);
175 int mgs_cleanup_fsdb_list(struct obd_device *obd);
176 int mgs_find_or_make_fsdb(struct obd_device *obd, char *name,
178 struct fs_db *mgs_find_fsdb(struct obd_device *obd, char *fsname);
179 int mgs_get_fsdb_srpc_from_llog(struct obd_device *obd, struct fs_db *fsdb);
180 int mgs_check_index(struct obd_device *obd, struct mgs_target_info *mti);
181 int mgs_check_failnid(struct obd_device *obd, struct mgs_target_info *mti);
182 int mgs_write_log_target(struct obd_device *obd, struct mgs_target_info *mti,
184 int mgs_upgrade_sv_14(struct obd_device *obd, struct mgs_target_info *mti,
186 int mgs_erase_log(struct obd_device *obd, char *name);
187 int mgs_erase_logs(struct obd_device *obd, char *fsname);
188 int mgs_setparam(struct obd_device *obd, struct lustre_cfg *lcfg, char *fsname);
190 int mgs_pool_cmd(struct obd_device *obd, enum lcfg_command_type cmd,
191 char *poolname, char *fsname, char *ostname);
194 int mgs_get_lock(struct obd_device *obd, struct ldlm_res_id *res,
195 struct lustre_handle *lockh);
196 int mgs_put_lock(struct lustre_handle *lockh);
197 void mgs_revoke_lock(struct obd_device *obd, struct fs_db *fsdb, int type);
200 int mgs_ir_update(struct obd_device *obd, struct mgs_target_info *mti);
201 int mgs_ir_init_fs(struct obd_device *obd, struct fs_db *fsdb);
202 void mgs_ir_fini_fs(struct obd_device *obd, struct fs_db *fsdb);
203 void mgs_ir_notify_complete(struct fs_db *fsdb);
204 int mgs_get_ir_logs(struct ptlrpc_request *req);
205 int lprocfs_wr_ir_state(struct file *file, const char *buffer,
206 unsigned long count, void *data);
207 int lprocfs_rd_ir_state(struct seq_file *seq, void *data);
208 int lprocfs_wr_ir_timeout(struct file *file, const char *buffer,
209 unsigned long count, void *data);
210 int lprocfs_rd_ir_timeout(char *page, char **start, off_t off, int count,
211 int *eof, void *data);
212 void mgs_fsc_cleanup(struct obd_export *exp);
213 void mgs_fsc_cleanup_by_fsdb(struct fs_db *fsdb);
214 int mgs_fsc_attach(struct obd_export *exp, char *fsname);
217 int mgs_export_stats_init(struct obd_device *obd, struct obd_export *exp,
219 int mgs_client_free(struct obd_export *exp);
220 int mgs_fs_setup(struct obd_device *obd, struct vfsmount *mnt);
221 int mgs_fs_cleanup(struct obd_device *obddev);
223 #define strsuf(buf, suffix) (strcmp((buf)+strlen(buf)-strlen(suffix), (suffix)))
225 int lproc_mgs_setup(struct obd_device *dev);
226 int lproc_mgs_cleanup(struct obd_device *obd);
227 int lproc_mgs_add_live(struct obd_device *obd, struct fs_db *fsdb);
228 int lproc_mgs_del_live(struct obd_device *obd, struct fs_db *fsdb);
229 void lprocfs_mgs_init_vars(struct lprocfs_static_vars *lvars);
231 static inline int lproc_mgs_setup(struct obd_device *dev)
233 static inline int lproc_mgs_cleanup(struct obd_device *obd)
235 static inline int lproc_mgs_add_live(struct obd_device *obd, struct fs_db *fsdb)
237 static inline int lproc_mgs_del_live(struct obd_device *obd, struct fs_db *fsdb)
239 static void lprocfs_mgs_init_vars(struct lprocfs_static_vars *lvars)
241 memset(lvars, 0, sizeof(*lvars));
245 /* mgs/lproc_mgs.c */
247 LPROC_MGS_CONNECT = 0,
248 LPROC_MGS_DISCONNECT,
250 LPROC_MGS_TARGET_REG,
251 LPROC_MGS_TARGET_DEL,
254 void mgs_counter_incr(struct obd_export *exp, int opcode);
255 void mgs_stats_counter_init(struct lprocfs_stats *stats);
257 #endif /* _MGS_INTERNAL_H */