-/* -*- 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.
* 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 <lprocfs_status.h>
#include <lustre/lustre_idl.h>
#include <lustre_dlm.h>
struct mds_idmap_table;
struct mdt_idmap_table;
-struct lu_export_data {
+/**
+ * Target-specific export data
+ */
+struct tg_export_data {
/** Protects led_lcd below */
- cfs_semaphore_t 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 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;
+ 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 {
cfs_spinlock_t oscc_lock;
cfs_list_t oscc_wait_create_list;
};
/* 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;
+ 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 */
__u32 fed_group;
};
-#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;
cfs_hlist_node_t nid_hash;
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;
/**
*/
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
- 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 */
- /* exp_obd_chain_timed fo ping evictor, protected by obd_dev_lock */
+ 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 */
+ 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;
- cfs_hash_t *exp_lock_hash; /* existing lock hash */
- cfs_spinlock_t exp_lock_hash_lock;
+ /** Hash list of all ldlm locks granted on this export */
+ cfs_hash_t *exp_lock_hash;
+ /** Lock protecting access to exp_flock_wait_list */
+ cfs_rwlock_t exp_flock_wait_lock;
+ /**
+ * Wait queue for Posix lock deadlock detection, added with
+ * ldlm_lock::l_flock_waitq.
+ */
+ cfs_list_t exp_flock_wait_list;
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;
- cfs_spinlock_t exp_lock; /* protects flags int below */
- /* ^ protects exp_outstanding_replies too */
+ /** protects exp_flags and exp_outstanding_replies */
+ cfs_spinlock_t exp_lock;
+ /** Compatibility flags for this export */
__u64 exp_connect_flags;
enum obd_option exp_flags;
unsigned long exp_failed:1,
/* 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 */
+ /** 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;
};
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 */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff