lustre_export.h 6.97 KiB
/* -*- 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 2008 Sun Microsystems, Inc. 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.
*/
#ifndef __EXPORT_H
#define __EXPORT_H
#include <lustre/lustre_idl.h>
#include <lustre_dlm.h>
#include <lprocfs_status.h>
#include <class_hash.h>
/* Data stored per client in the last_rcvd file. In le32 order. */
struct mds_export_data {
struct list_head med_open_head;
spinlock_t med_open_lock; /* lock med_open_head, mfd_list*/
struct lsd_client_data *med_lcd;
__u64 med_ibits_known;
loff_t med_lr_off;
int med_lr_idx;
};
struct osc_creator {
spinlock_t oscc_lock;
struct list_head oscc_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;
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 */
struct list_head eced_locks;
};
/* In-memory access to client data from OST struct */
struct filter_export_data {
spinlock_t fed_lock; /* protects fed_open_head */
struct lsd_client_data *fed_lcd;
loff_t fed_lr_off;
int fed_lr_idx;
long fed_dirty; /* in bytes */
long fed_grant; /* in bytes */
struct list_head fed_mod_list; /* files being modified */
int fed_mod_count;/* items in fed_writing list */
long fed_pending; /* bytes just being written */
struct brw_stats fed_brw_stats;
};
typedef struct nid_stat_uuid {
struct list_head ns_uuid_list;
struct obd_uuid ns_uuid;
} nid_stat_uuid_t;
typedef struct nid_stat {
lnet_nid_t nid;
struct hlist_node nid_hash;
struct list_head nid_list;
struct list_head nid_uuid_list;
struct obd_device *nid_obd;
struct proc_dir_entry *nid_proc;
struct lprocfs_stats *nid_stats;
struct brw_stats *nid_brw_stats;
struct lprocfs_stats *nid_ldlm_stats;
int nid_exp_ref_count;
} nid_stat_t;
enum obd_option {
OBD_OPT_FORCE = 0x0001,
OBD_OPT_FAILOVER = 0x0002,
OBD_OPT_ABORT_RECOV = 0x0004,
};
struct obd_export {
struct portals_handle exp_handle;
atomic_t exp_refcount;
atomic_t exp_rpc_count;
struct obd_uuid exp_client_uuid;
lnet_nid_t exp_client_nid;
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;
struct obd_device *exp_obd;
struct obd_import *exp_imp_reverse; /* to make RPCs backwards */
struct nid_stat *exp_nid_stats;
struct lprocfs_stats *exp_ops_stats;
struct ptlrpc_connection *exp_connection;
__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;
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 */
__u64 exp_connect_flags;
enum obd_option exp_flags;
unsigned long exp_failed:1,
exp_disconnected:1,
exp_connecting:1,
exp_replay_needed:1,
exp_need_sync:1, /* needs sync from connect */ exp_bflag:1, /* for 1.6 only to track
MDS_BFLAG_EXT_FLAGS */
exp_libclient:1; /* liblustre client? */
struct list_head exp_queued_rpc; /* RPC to be handled */
union {
struct mds_export_data eu_mds_data;
struct filter_export_data eu_filter_data;
struct ec_export_data eu_ec_data;
} u;
};
#define exp_mds_data u.eu_mds_data
#define exp_lov_data u.eu_lov_data
#define exp_filter_data u.eu_filter_data
#define exp_ec_data u.eu_ec_data
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 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);
#endif /* __EXPORT_H */