1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
40 /** \defgroup export export
45 #include <lprocfs_status.h>
46 #include <lustre/lustre_idl.h>
47 #include <lustre_dlm.h>
49 struct mds_client_data;
50 struct mdt_client_data;
51 struct mds_idmap_table;
52 struct mdt_idmap_table;
54 struct tg_export_data {
55 /** Protects led_lcd below */
56 cfs_semaphore_t ted_lcd_lock;
57 /** Per-client data for each export */
58 struct lsd_client_data *ted_lcd;
59 /** Offset of record in last_rcvd file */
61 /** Client index in last_rcvd file */
65 struct mdt_export_data {
66 struct tg_export_data med_ted;
67 cfs_list_t med_open_head;
68 cfs_spinlock_t med_open_lock; /* lock med_open_head, mfd_list*/
69 __u64 med_ibits_known;
70 cfs_semaphore_t med_idmap_sem;
71 struct lustre_idmap_table *med_idmap;
75 cfs_spinlock_t oscc_lock;
76 cfs_list_t oscc_wait_create_list;
77 struct obd_device *oscc_obd;
78 obd_id oscc_last_id;//last available pre-created object
79 obd_id oscc_next_id;// what object id to give out next
82 * Limit oscc_grow_count value, can be changed via proc fs
84 int oscc_max_grow_count;
87 cfs_waitq_t oscc_waitq; /* creating procs wait on this */
90 struct ec_export_data { /* echo client */
91 cfs_list_t eced_locks;
94 /* In-memory access to client data from OST struct */
95 struct filter_export_data {
96 struct tg_export_data fed_ted;
97 cfs_spinlock_t fed_lock; /**< protects fed_mod_list */
98 long fed_dirty; /* in bytes */
99 long fed_grant; /* in bytes */
100 cfs_list_t fed_mod_list; /* files being modified */
101 int fed_mod_count;/* items in fed_writing list */
102 long fed_pending; /* bytes just being written */
106 typedef struct nid_stat {
108 cfs_hlist_node_t nid_hash;
110 struct obd_device *nid_obd;
111 struct proc_dir_entry *nid_proc;
112 struct lprocfs_stats *nid_stats;
113 struct lprocfs_stats *nid_ldlm_stats;
114 struct brw_stats *nid_brw_stats;
115 cfs_atomic_t nid_exp_ref_count; /* for obd_nid_stats_hash
119 #define nidstat_getref(nidstat) \
121 cfs_atomic_inc(&(nidstat)->nid_exp_ref_count); \
124 #define nidstat_putref(nidstat) \
126 cfs_atomic_dec(&(nidstat)->nid_exp_ref_count); \
127 LASSERTF(cfs_atomic_read(&(nidstat)->nid_exp_ref_count) >= 0, \
128 "stat %p nid_exp_ref_count < 0\n", nidstat); \
132 OBD_OPT_FORCE = 0x0001,
133 OBD_OPT_FAILOVER = 0x0002,
134 OBD_OPT_ABORT_RECOV = 0x0004,
138 struct portals_handle exp_handle;
139 cfs_atomic_t exp_refcount;
141 * Set of counters below is to track where export references are
142 * kept. The exp_rpc_count is used for reconnect handling also,
143 * the cb_count and locks_count are for debug purposes only for now.
144 * The sum of them should be less than exp_refcount by 3
146 cfs_atomic_t exp_rpc_count; /* RPC references */
147 cfs_atomic_t exp_cb_count; /* Commit callback references */
148 cfs_atomic_t exp_locks_count; /** Lock references */
149 #if LUSTRE_TRACKS_LOCK_EXP_REFS
150 cfs_list_t exp_locks_list;
151 cfs_spinlock_t exp_locks_list_guard;
153 cfs_atomic_t exp_replay_count;
154 struct obd_uuid exp_client_uuid;
155 cfs_list_t exp_obd_chain;
156 cfs_hlist_node_t exp_uuid_hash; /* uuid-export hash*/
157 cfs_hlist_node_t exp_nid_hash; /* nid-export hash */
158 /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */
159 cfs_list_t exp_obd_chain_timed;
160 struct obd_device *exp_obd;
161 struct obd_import *exp_imp_reverse; /* to make RPCs backwards */
162 struct nid_stat *exp_nid_stats;
163 struct lprocfs_stats *exp_md_stats;
164 struct ptlrpc_connection *exp_connection;
166 cfs_hash_t *exp_lock_hash; /* existing lock hash */
167 cfs_spinlock_t exp_lock_hash_lock;
168 cfs_list_t exp_outstanding_replies;
169 cfs_list_t exp_uncommitted_replies;
170 cfs_spinlock_t exp_uncommitted_replies_lock;
171 __u64 exp_last_committed;
172 cfs_time_t exp_last_request_time;
173 cfs_list_t exp_req_replay_queue;
174 cfs_spinlock_t exp_lock; /* protects flags int below */
175 /* ^ protects exp_outstanding_replies too */
176 __u64 exp_connect_flags;
177 enum obd_option exp_flags;
178 unsigned long exp_failed:1,
182 /** VBR: export missed recovery */
184 /** VBR: failed version checking */
186 exp_req_replay_needed:1,
187 exp_lock_replay_needed:1,
191 exp_libclient:1, /* liblustre client? */
192 /* client timed out and tried to reconnect,
193 * but couldn't because of active rpcs */
194 exp_abort_active_req:1;
195 cfs_list_t exp_queued_rpc; /* RPC to be handled */
196 /* also protected by exp_lock */
197 enum lustre_sec_part exp_sp_peer;
198 struct sptlrpc_flavor exp_flvr; /* current */
199 struct sptlrpc_flavor exp_flvr_old[2]; /* about-to-expire */
200 cfs_time_t exp_flvr_expire[2]; /* seconds */
203 struct tg_export_data eu_target_data;
204 struct mdt_export_data eu_mdt_data;
205 struct filter_export_data eu_filter_data;
206 struct ec_export_data eu_ec_data;
210 #define exp_target_data u.eu_target_data
211 #define exp_mdt_data u.eu_mdt_data
212 #define exp_filter_data u.eu_filter_data
213 #define exp_ec_data u.eu_ec_data
215 static inline int exp_expired(struct obd_export *exp, cfs_duration_t age)
217 LASSERT(exp->exp_delayed);
218 return cfs_time_before(cfs_time_add(exp->exp_last_request_time, age),
219 cfs_time_current_sec());
222 static inline int exp_connect_cancelset(struct obd_export *exp)
224 LASSERT(exp != NULL);
225 return !!(exp->exp_connect_flags & OBD_CONNECT_CANCELSET);
228 static inline int exp_connect_lru_resize(struct obd_export *exp)
230 LASSERT(exp != NULL);
231 return !!(exp->exp_connect_flags & OBD_CONNECT_LRU_RESIZE);
234 static inline int exp_connect_rmtclient(struct obd_export *exp)
236 LASSERT(exp != NULL);
237 return !!(exp->exp_connect_flags & OBD_CONNECT_RMT_CLIENT);
240 static inline int client_is_remote(struct obd_export *exp)
242 struct obd_import *imp = class_exp2cliimp(exp);
244 return !!(imp->imp_connect_data.ocd_connect_flags &
245 OBD_CONNECT_RMT_CLIENT);
248 static inline int exp_connect_vbr(struct obd_export *exp)
250 LASSERT(exp != NULL);
251 LASSERT(exp->exp_connection);
252 return !!(exp->exp_connect_flags & OBD_CONNECT_VBR);
255 static inline int exp_connect_som(struct obd_export *exp)
257 LASSERT(exp != NULL);
258 return !!(exp->exp_connect_flags & OBD_CONNECT_SOM);
261 static inline int imp_connect_lru_resize(struct obd_import *imp)
263 struct obd_connect_data *ocd;
265 LASSERT(imp != NULL);
266 ocd = &imp->imp_connect_data;
267 return !!(ocd->ocd_connect_flags & OBD_CONNECT_LRU_RESIZE);
270 extern struct obd_export *class_conn2export(struct lustre_handle *conn);
271 extern struct obd_device *class_conn2obd(struct lustre_handle *conn);
275 #endif /* __EXPORT_H */