/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 only, * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * * GPL HEADER END */ /* * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. */ /** \defgroup obd_export PortalRPC export definitions * * @{ */ #ifndef __EXPORT_H #define __EXPORT_H /** \defgroup export export * * @{ */ #include #include #include struct mds_client_data; struct mdt_client_data; struct mds_idmap_table; struct mdt_idmap_table; /** * Target-specific export data */ struct tg_export_data { /** Protects led_lcd below */ cfs_semaphore_t ted_lcd_lock; /** Per-client data for each export */ struct lsd_client_data *ted_lcd; /** Offset of record in last_rcvd file */ loff_t ted_lr_off; /** Client index in last_rcvd file */ int ted_lr_idx; }; /** * MDT-specific export data */ struct mdt_export_data { struct tg_export_data med_ted; /** List of all files opened by client on this MDT */ cfs_list_t med_open_head; cfs_spinlock_t med_open_lock; /* lock med_open_head, mfd_list*/ /** Bitmask of all ibit locks this MDT understands */ __u64 med_ibits_known; cfs_semaphore_t med_idmap_sem; struct lustre_idmap_table *med_idmap; }; struct osc_creator { cfs_spinlock_t oscc_lock; cfs_list_t oscc_wait_create_list; struct obd_device *oscc_obd; obd_id oscc_last_id;//last available pre-created object obd_id oscc_next_id;// what object id to give out next int oscc_grow_count; /** * Limit oscc_grow_count value, can be changed via proc fs */ int oscc_max_grow_count; struct obdo oscc_oa; int oscc_flags; cfs_waitq_t oscc_waitq; /* creating procs wait on this */ }; struct ec_export_data { /* echo client */ cfs_list_t eced_locks; }; /* In-memory access to client data from OST struct */ /** Filter (oss-side) specific import data */ struct filter_export_data { struct tg_export_data fed_ted; cfs_spinlock_t fed_lock; /**< protects fed_mod_list */ long fed_dirty; /* in bytes */ long fed_grant; /* in bytes */ cfs_list_t fed_mod_list; /* files being modified */ int fed_mod_count;/* items in fed_writing list */ long fed_pending; /* bytes just being written */ __u32 fed_group; }; struct mgs_export_data { cfs_list_t med_clients; /* mgc fs client via this exp */ cfs_spinlock_t med_lock; /* protect med_clients */ }; /** * per-NID statistics structure. * It tracks access patterns to this export on a per-client-NID basis */ typedef struct nid_stat { lnet_nid_t nid; cfs_hlist_node_t nid_hash; cfs_list_t nid_list; struct obd_device *nid_obd; struct proc_dir_entry *nid_proc; struct lprocfs_stats *nid_stats; struct lprocfs_stats *nid_ldlm_stats; struct brw_stats *nid_brw_stats; cfs_atomic_t nid_exp_ref_count; /* for obd_nid_stats_hash exp_nid_stats */ }nid_stat_t; #define nidstat_getref(nidstat) \ do { \ cfs_atomic_inc(&(nidstat)->nid_exp_ref_count); \ } while(0) #define nidstat_putref(nidstat) \ do { \ cfs_atomic_dec(&(nidstat)->nid_exp_ref_count); \ LASSERTF(cfs_atomic_read(&(nidstat)->nid_exp_ref_count) >= 0, \ "stat %p nid_exp_ref_count < 0\n", nidstat); \ } while(0) enum obd_option { OBD_OPT_FORCE = 0x0001, OBD_OPT_FAILOVER = 0x0002, OBD_OPT_ABORT_RECOV = 0x0004, }; /** * Export structure. Represents target-side of connection in portals. * Also used in Lustre to connect between layers on the same node when * there is no network-connection in-between. * For every connected client there is an export structure on the server * attached to the same obd device. */ struct obd_export { /** * Export handle, it's id is provided to client on connect * Subsequent client RPCs contain this handle id to identify * what export they are talking to. */ struct portals_handle exp_handle; cfs_atomic_t exp_refcount; /** * Set of counters below is to track where export references are * kept. The exp_rpc_count is used for reconnect handling also, * the cb_count and locks_count are for debug purposes only for now. * The sum of them should be less than exp_refcount by 3 */ cfs_atomic_t exp_rpc_count; /* RPC references */ cfs_atomic_t exp_cb_count; /* Commit callback references */ cfs_atomic_t exp_locks_count; /** Lock references */ #if LUSTRE_TRACKS_LOCK_EXP_REFS cfs_list_t exp_locks_list; cfs_spinlock_t exp_locks_list_guard; #endif /** Number of queued replay requests to be processes */ cfs_atomic_t exp_replay_count; /** UUID of client connected to this export */ struct obd_uuid exp_client_uuid; /** To link all exports on an obd device */ cfs_list_t exp_obd_chain; cfs_hlist_node_t exp_uuid_hash; /** uuid-export hash*/ cfs_hlist_node_t exp_nid_hash; /** nid-export hash */ /** * All exports eligible for ping evictor are linked into a list * through this field in "most time since last request on this export" * order * protected by obd_dev_lock */ cfs_list_t exp_obd_chain_timed; /** Obd device of this export */ struct obd_device *exp_obd; /** "reverse" import to send requests (e.g. from ldlm) back to client */ struct obd_import *exp_imp_reverse; struct nid_stat *exp_nid_stats; struct lprocfs_stats *exp_md_stats; /** Active connetion */ struct ptlrpc_connection *exp_connection; /** Connection count value from last succesful reconnect rpc */ __u32 exp_conn_cnt; /** Hash list of all ldlm locks granted on this export */ cfs_hash_t *exp_lock_hash; /** lock to protect exp_lock_hash accesses */ cfs_spinlock_t exp_lock_hash_lock; cfs_list_t exp_outstanding_replies; cfs_list_t exp_uncommitted_replies; cfs_spinlock_t exp_uncommitted_replies_lock; /** Last committed transno for this export */ __u64 exp_last_committed; /** When was last request received */ cfs_time_t exp_last_request_time; /** On replay all requests waiting for replay are linked here */ cfs_list_t exp_req_replay_queue; /** protects exp_flags and exp_outstanding_replies */ cfs_spinlock_t exp_lock; /** protects exp_queued_rpc */ cfs_spinlock_t exp_rpc_lock; /** Compatibility flags for this export */ __u64 exp_connect_flags; enum obd_option exp_flags; unsigned long exp_failed:1, exp_in_recovery:1, exp_disconnected:1, exp_connecting:1, /** VBR: export missed recovery */ exp_delayed:1, /** VBR: failed version checking */ exp_vbr_failed:1, exp_req_replay_needed:1, exp_lock_replay_needed:1, exp_need_sync:1, exp_flvr_changed:1, exp_flvr_adapt:1, exp_libclient:1, /* liblustre client? */ /* client timed out and tried to reconnect, * but couldn't because of active rpcs */ exp_abort_active_req:1; cfs_list_t exp_queued_rpc; /* RPC to be handled */ /* also protected by exp_lock */ enum lustre_sec_part exp_sp_peer; struct sptlrpc_flavor exp_flvr; /* current */ struct sptlrpc_flavor exp_flvr_old[2]; /* about-to-expire */ cfs_time_t exp_flvr_expire[2]; /* seconds */ /** Target specific data */ union { struct tg_export_data eu_target_data; struct mdt_export_data eu_mdt_data; struct filter_export_data eu_filter_data; struct ec_export_data eu_ec_data; struct mgs_export_data eu_mgs_data; } u; }; #define exp_target_data u.eu_target_data #define exp_mdt_data u.eu_mdt_data #define exp_filter_data u.eu_filter_data #define exp_ec_data u.eu_ec_data static inline int exp_expired(struct obd_export *exp, cfs_duration_t age) { LASSERT(exp->exp_delayed); return cfs_time_before(cfs_time_add(exp->exp_last_request_time, age), cfs_time_current_sec()); } static inline int exp_connect_cancelset(struct obd_export *exp) { LASSERT(exp != NULL); return !!(exp->exp_connect_flags & OBD_CONNECT_CANCELSET); } static inline int exp_connect_lru_resize(struct obd_export *exp) { LASSERT(exp != NULL); return !!(exp->exp_connect_flags & OBD_CONNECT_LRU_RESIZE); } static inline int exp_connect_rmtclient(struct obd_export *exp) { LASSERT(exp != NULL); return !!(exp->exp_connect_flags & OBD_CONNECT_RMT_CLIENT); } static inline int client_is_remote(struct obd_export *exp) { struct obd_import *imp = class_exp2cliimp(exp); return !!(imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_RMT_CLIENT); } static inline int exp_connect_vbr(struct obd_export *exp) { LASSERT(exp != NULL); LASSERT(exp->exp_connection); return !!(exp->exp_connect_flags & OBD_CONNECT_VBR); } static inline int exp_connect_som(struct obd_export *exp) { LASSERT(exp != NULL); return !!(exp->exp_connect_flags & OBD_CONNECT_SOM); } static inline int imp_connect_lru_resize(struct obd_import *imp) { struct obd_connect_data *ocd; LASSERT(imp != NULL); ocd = &imp->imp_connect_data; return !!(ocd->ocd_connect_flags & OBD_CONNECT_LRU_RESIZE); } extern struct obd_export *class_conn2export(struct lustre_handle *conn); extern struct obd_device *class_conn2obd(struct lustre_handle *conn); /** @} export */ #endif /* __EXPORT_H */ /** @} obd_export */