X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flustre_export.h;h=8dec5f2826ac71a8cf7dab149c9214942acc861f;hb=3b2d496affc294e86744ab9b1c1014f0ce81bb3e;hp=7ff4284e109b6075f205d39d6ea7ba9d1f218bf4;hpb=676fff00c079ff7e91b091db76756e36bd29e572;p=fs%2Flustre-release.git diff --git a/lustre/include/lustre_export.h b/lustre/include/lustre_export.h index 7ff4284..8dec5f2 100644 --- a/lustre/include/lustre_export.h +++ b/lustre/include/lustre_export.h @@ -1,6 +1,4 @@ -/* -*- 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. @@ -26,56 +24,69 @@ * GPL HEADER END */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved + * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. + * + * Copyright (c) 2011, 2012, Whamcloud, Inc. */ /* * 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 -#include struct mds_client_data; struct mdt_client_data; struct mds_idmap_table; struct mdt_idmap_table; -struct lu_export_data { +/** + * Target-specific export data + */ +struct tg_export_data { /** Protects led_lcd below */ - struct semaphore led_lcd_lock; + cfs_mutex_t ted_lcd_lock; /** Per-client data for each export */ - struct lsd_client_data *led_lcd; + struct lsd_client_data *ted_lcd; /** Offset of record in last_rcvd file */ - loff_t led_lr_off; + loff_t ted_lr_off; /** Client index in last_rcvd file */ - int led_lr_idx; + int ted_lr_idx; }; +/** + * MDT-specific export data + */ struct mdt_export_data { - struct lu_export_data med_led; - struct list_head med_open_head; - spinlock_t med_open_lock; /* lock med_open_head, mfd_list*/ + 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; - struct semaphore med_idmap_sem; + cfs_mutex_t med_idmap_mutex; struct lustre_idmap_table *med_idmap; }; -#define med_lcd_lock med_led.led_lcd_lock -#define med_lcd med_led.led_lcd -#define med_lr_off med_led.led_lr_off -#define med_lr_idx med_led.led_lr_idx - struct osc_creator { - spinlock_t oscc_lock; - struct list_head oscc_wait_create_list; - struct obd_device *oscc_obd; + 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; @@ -89,48 +100,54 @@ struct osc_creator { }; struct ec_export_data { /* echo client */ - struct list_head eced_locks; + 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 lu_export_data fed_led; - spinlock_t fed_lock; /**< protects fed_mod_list */ + 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 */ - struct list_head fed_mod_list; /* files being modified */ + 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; + __u8 fed_pagesize; /* log2 of client page size */ }; -#define fed_lcd_lock fed_led.led_lcd_lock -#define fed_lcd fed_led.led_lcd -#define fed_lr_off fed_led.led_lr_off -#define fed_lr_idx fed_led.led_lr_idx +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; - struct hlist_node nid_hash; - struct list_head nid_list; + 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; - atomic_t nid_exp_ref_count; /* for obd_nid_stats_hash + cfs_atomic_t nid_exp_ref_count; /* for obd_nid_stats_hash exp_nid_stats */ }nid_stat_t; #define nidstat_getref(nidstat) \ do { \ - atomic_inc(&(nidstat)->nid_exp_ref_count); \ + cfs_atomic_inc(&(nidstat)->nid_exp_ref_count); \ } while(0) #define nidstat_putref(nidstat) \ do { \ - atomic_dec(&(nidstat)->nid_exp_ref_count); \ - LASSERTF(atomic_read(&(nidstat)->nid_exp_ref_count) >= 0, \ + 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) @@ -140,35 +157,84 @@ enum obd_option { 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; - atomic_t exp_refcount; - atomic_t exp_rpc_count; - atomic_t exp_cb_count; - atomic_t exp_locks_count; - atomic_t exp_replay_count; + 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 */ + /** Number of queued replay requests to be processes */ + cfs_atomic_t exp_replay_count; + 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 + /** UUID of client connected to this export */ struct obd_uuid exp_client_uuid; - struct list_head exp_obd_chain; - struct hlist_node exp_uuid_hash; /* uuid-export hash*/ - struct hlist_node exp_nid_hash; /* nid-export hash */ - /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */ - struct list_head exp_obd_chain_timed; + /** 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; - struct obd_import *exp_imp_reverse; /* to make RPCs backwards */ + /** + * "reverse" import to send requests (e.g. from ldlm) back to client + * exp_lock protect its change + */ + 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; - lustre_hash_t *exp_lock_hash; /* existing lock hash */ - spinlock_t exp_lock_hash_lock; - struct list_head exp_outstanding_replies; - struct list_head exp_uncommitted_replies; - spinlock_t exp_uncommitted_replies_lock; + /** Hash list of all ldlm locks granted on this export */ + cfs_hash_t *exp_lock_hash; + /** + * Hash list for Posix lock deadlock detection, added with + * ldlm_lock::l_exp_flock_hash. + */ + cfs_hash_t *exp_flock_hash; + 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; - struct list_head exp_req_replay_queue; - spinlock_t exp_lock; /* protects flags int below */ - /* ^ protects exp_outstanding_replies too */ + /** On replay all requests waiting for replay are linked here */ + cfs_list_t exp_req_replay_queue; + /** + * protects exp_flags, exp_outstanding_replies and the change + * of exp_imp_reverse + */ + cfs_spinlock_t exp_lock; + /** Compatibility flags for this export */ __u64 exp_connect_flags; enum obd_option exp_flags; unsigned long exp_failed:1, @@ -187,19 +253,31 @@ struct obd_export { exp_libclient:1, /* liblustre client? */ /* client timed out and tried to reconnect, * but couldn't because of active rpcs */ - exp_abort_active_req:1; - struct list_head exp_queued_rpc; /* RPC to be handled */ + exp_abort_active_req:1, + /* if to swap nidtbl entries for 2.2 clients. + * Only used by the MGS to fix LU-1644. */ + exp_need_mne_swab:1; /* 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 */ + /** protects exp_hp_rpcs */ + cfs_spinlock_t exp_rpc_lock; + cfs_list_t exp_hp_rpcs; /* (potential) HP RPCs */ + + /** blocking dlm lock list, protected by exp_bl_list_lock */ + cfs_list_t exp_bl_list; + cfs_spinlock_t exp_bl_list_lock; + + /** Target specific data */ union { - struct lu_export_data eu_target_data; + 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; }; @@ -266,4 +344,7 @@ static inline int imp_connect_lru_resize(struct obd_import *imp) 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 */