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 #include <lprocfs_status.h>
41 #include <lustre/lustre_idl.h>
42 #include <lustre_dlm.h>
43 #include <class_hash.h>
45 struct mds_client_data;
46 struct mdt_client_data;
47 struct mds_idmap_table;
48 struct mdt_idmap_table;
50 struct lu_export_data {
51 /** Protects led_lcd below */
52 struct semaphore led_lcd_lock;
53 /** Per-client data for each export */
54 struct lsd_client_data *led_lcd;
55 /** Offset of record in last_rcvd file */
57 /** Client index in last_rcvd file */
61 struct mdt_export_data {
62 struct lu_export_data med_led;
63 struct list_head med_open_head;
64 spinlock_t med_open_lock; /* lock med_open_head, mfd_list*/
65 __u64 med_ibits_known;
66 struct semaphore med_idmap_sem;
67 struct lustre_idmap_table *med_idmap;
70 #define med_lcd_lock med_led.led_lcd_lock
71 #define med_lcd med_led.led_lcd
72 #define med_lr_off med_led.led_lr_off
73 #define med_lr_idx med_led.led_lr_idx
77 struct list_head oscc_wait_create_list;
78 struct obd_device *oscc_obd;
79 obd_id oscc_last_id;//last available pre-created object
80 obd_id oscc_next_id;// what object id to give out next
83 * Limit oscc_grow_count value, can be changed via proc fs
85 int oscc_max_grow_count;
88 cfs_waitq_t oscc_waitq; /* creating procs wait on this */
91 struct ec_export_data { /* echo client */
92 struct list_head eced_locks;
95 /* In-memory access to client data from OST struct */
96 struct filter_export_data {
97 struct lu_export_data fed_led;
98 spinlock_t fed_lock; /**< protects fed_mod_list */
99 long fed_dirty; /* in bytes */
100 long fed_grant; /* in bytes */
101 struct list_head fed_mod_list; /* files being modified */
102 int fed_mod_count;/* items in fed_writing list */
103 long fed_pending; /* bytes just being written */
107 #define fed_lcd_lock fed_led.led_lcd_lock
108 #define fed_lcd fed_led.led_lcd
109 #define fed_lr_off fed_led.led_lr_off
110 #define fed_lr_idx fed_led.led_lr_idx
112 typedef struct nid_stat {
114 struct hlist_node nid_hash;
115 struct list_head nid_list;
116 struct obd_device *nid_obd;
117 struct proc_dir_entry *nid_proc;
118 struct lprocfs_stats *nid_stats;
119 struct lprocfs_stats *nid_ldlm_stats;
120 struct brw_stats *nid_brw_stats;
121 atomic_t nid_exp_ref_count; /* for obd_nid_stats_hash
125 #define nidstat_getref(nidstat) \
127 atomic_inc(&(nidstat)->nid_exp_ref_count); \
130 #define nidstat_putref(nidstat) \
132 atomic_dec(&(nidstat)->nid_exp_ref_count); \
133 LASSERTF(atomic_read(&(nidstat)->nid_exp_ref_count) >= 0, \
134 "stat %p nid_exp_ref_count < 0\n", nidstat); \
138 OBD_OPT_FORCE = 0x0001,
139 OBD_OPT_FAILOVER = 0x0002,
140 OBD_OPT_ABORT_RECOV = 0x0004,
144 struct portals_handle exp_handle;
145 atomic_t exp_refcount;
147 * Set of counters below is to track where export references are
148 * kept. The exp_rpc_count is used for reconnect handling also,
149 * the cb_count and locks_count are for debug purposes only for now.
150 * The sum of them should be less than exp_refcount by 3
152 atomic_t exp_rpc_count; /** RPC references */
153 atomic_t exp_cb_count; /** Commit callback references */
154 atomic_t exp_locks_count; /** Lock references */
155 #if LUSTRE_TRACKS_LOCK_EXP_REFS
156 struct list_head exp_locks_list;
157 spinlock_t exp_locks_list_guard;
159 atomic_t exp_replay_count;
160 struct obd_uuid exp_client_uuid;
161 struct list_head exp_obd_chain;
162 struct hlist_node exp_uuid_hash; /* uuid-export hash*/
163 struct hlist_node exp_nid_hash; /* nid-export hash */
164 /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */
165 struct list_head exp_obd_chain_timed;
166 struct obd_device *exp_obd;
167 struct obd_import *exp_imp_reverse; /* to make RPCs backwards */
168 struct nid_stat *exp_nid_stats;
169 struct lprocfs_stats *exp_md_stats;
170 struct ptlrpc_connection *exp_connection;
172 lustre_hash_t *exp_lock_hash; /* existing lock hash */
173 spinlock_t exp_lock_hash_lock;
174 struct list_head exp_outstanding_replies;
175 struct list_head exp_uncommitted_replies;
176 spinlock_t exp_uncommitted_replies_lock;
177 __u64 exp_last_committed;
178 cfs_time_t exp_last_request_time;
179 struct list_head exp_req_replay_queue;
180 spinlock_t exp_lock; /* protects flags int below */
181 /* ^ protects exp_outstanding_replies too */
182 __u64 exp_connect_flags;
183 enum obd_option exp_flags;
184 unsigned long exp_failed:1,
188 /** VBR: export missed recovery */
190 /** VBR: failed version checking */
192 exp_req_replay_needed:1,
193 exp_lock_replay_needed:1,
197 exp_libclient:1, /* liblustre client? */
198 /* client timed out and tried to reconnect,
199 * but couldn't because of active rpcs */
200 exp_abort_active_req:1;
201 struct list_head exp_queued_rpc; /* RPC to be handled */
202 /* also protected by exp_lock */
203 enum lustre_sec_part exp_sp_peer;
204 struct sptlrpc_flavor exp_flvr; /* current */
205 struct sptlrpc_flavor exp_flvr_old[2]; /* about-to-expire */
206 cfs_time_t exp_flvr_expire[2]; /* seconds */
209 struct lu_export_data eu_target_data;
210 struct mdt_export_data eu_mdt_data;
211 struct filter_export_data eu_filter_data;
212 struct ec_export_data eu_ec_data;
216 #define exp_target_data u.eu_target_data
217 #define exp_mdt_data u.eu_mdt_data
218 #define exp_filter_data u.eu_filter_data
219 #define exp_ec_data u.eu_ec_data
221 static inline int exp_expired(struct obd_export *exp, cfs_duration_t age)
223 LASSERT(exp->exp_delayed);
224 return cfs_time_before(cfs_time_add(exp->exp_last_request_time, age),
225 cfs_time_current_sec());
228 static inline int exp_connect_cancelset(struct obd_export *exp)
230 LASSERT(exp != NULL);
231 return !!(exp->exp_connect_flags & OBD_CONNECT_CANCELSET);
234 static inline int exp_connect_lru_resize(struct obd_export *exp)
236 LASSERT(exp != NULL);
237 return !!(exp->exp_connect_flags & OBD_CONNECT_LRU_RESIZE);
240 static inline int exp_connect_rmtclient(struct obd_export *exp)
242 LASSERT(exp != NULL);
243 return !!(exp->exp_connect_flags & OBD_CONNECT_RMT_CLIENT);
246 static inline int client_is_remote(struct obd_export *exp)
248 struct obd_import *imp = class_exp2cliimp(exp);
250 return !!(imp->imp_connect_data.ocd_connect_flags &
251 OBD_CONNECT_RMT_CLIENT);
254 static inline int exp_connect_vbr(struct obd_export *exp)
256 LASSERT(exp != NULL);
257 LASSERT(exp->exp_connection);
258 return !!(exp->exp_connect_flags & OBD_CONNECT_VBR);
261 static inline int exp_connect_som(struct obd_export *exp)
263 LASSERT(exp != NULL);
264 return !!(exp->exp_connect_flags & OBD_CONNECT_SOM);
267 static inline int imp_connect_lru_resize(struct obd_import *imp)
269 struct obd_connect_data *ocd;
271 LASSERT(imp != NULL);
272 ocd = &imp->imp_connect_data;
273 return !!(ocd->ocd_connect_flags & OBD_CONNECT_LRU_RESIZE);
276 extern struct obd_export *class_conn2export(struct lustre_handle *conn);
277 extern struct obd_device *class_conn2obd(struct lustre_handle *conn);
279 #endif /* __EXPORT_H */