-/* -*- 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, 2013, Intel Corporation.
*/
/*
* 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>
-#include <lprocfs_status.h>
-/* Data stored per client in the last_rcvd file. In le32 order. */
struct mds_client_data;
struct mdt_client_data;
struct mds_idmap_table;
struct mdt_idmap_table;
-struct mdt_export_data {
- struct list_head med_open_head;
- spinlock_t med_open_lock; /* lock med_open_head, mfd_list*/
- struct semaphore med_lcd_lock;
- struct lsd_client_data *med_lcd;
- __u64 med_ibits_known;
- loff_t med_lr_off;
- int med_lr_idx;
- unsigned int med_rmtclient:1; /* remote client? */
- struct semaphore med_idmap_sem;
- struct lustre_idmap_table *med_idmap;
-};
-
-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;
- /**
- * 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 */
+/**
+ * Target-specific export data
+ */
+struct tg_export_data {
+ /** Protects led_lcd below */
+ struct mutex 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;
};
-struct ldlm_export_data {
- struct list_head led_held_locks; /* protected by led_lock */
- spinlock_t led_lock;
+/**
+ * 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;
+ spinlock_t med_open_lock; /* med_open_head, mfd_list */
+ /** Bitmask of all ibit locks this MDT understands */
+ __u64 med_ibits_known;
+ struct mutex med_idmap_mutex;
+ struct lustre_idmap_table *med_idmap;
};
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 {
- spinlock_t fed_lock; /* protects fed_open_head */
- struct lsd_client_data *fed_lcd;
- loff_t fed_lr_off;
- int fed_lr_idx;
+ struct tg_export_data fed_ted;
+ 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;
- struct brw_stats fed_brw_stats;
+ __u8 fed_pagesize; /* log2 of client page size */
+};
+
+struct mgs_export_data {
+ cfs_list_t med_clients; /* mgc fs client via this exp */
+ spinlock_t med_lock; /* protect med_clients */
};
-typedef struct nid_stat {
+/**
+ * per-NID statistics structure.
+ * It tracks access patterns to this export on a per-client-NID basis
+ */
+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 brw_stats *nid_brw_stats;
- int nid_exp_ref_count;
-}nid_stat_t;
+ struct lprocfs_stats *nid_ldlm_stats;
+ cfs_atomic_t nid_exp_ref_count; /* for obd_nid_stats_hash
+ exp_nid_stats */
+};
+
+#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;
- atomic_t exp_refcount;
- atomic_t exp_rpc_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;
+ 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;
- struct lprocfs_stats *exp_ldlm_stats;
+ /** Active connetion */
struct ptlrpc_connection *exp_connection;
+ /** Connection count value from last succesful reconnect rpc */
__u32 exp_conn_cnt;
- struct ldlm_export_data exp_ldlm_data;
- 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;
- int exp_flags;
+ /** 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;
+ 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, exp_outstanding_replies and the change
+ * of exp_imp_reverse
+ */
+ spinlock_t exp_lock;
+ /** Compatibility flags for this export are embedded into
+ * exp_connect_data */
+ struct obd_connect_data exp_connect_data;
+ 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? */
+ exp_libclient:1, /* liblustre client? */
+ /* client timed out and tried to reconnect,
+ * but couldn't because of active rpcs */
+ 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 */
+ 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;
+ spinlock_t exp_bl_list_lock;
+
+ /** 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 __u64 *exp_connect_flags_ptr(struct obd_export *exp)
+{
+ return &exp->exp_connect_data.ocd_connect_flags;
+}
+
+static inline __u64 exp_connect_flags(struct obd_export *exp)
+{
+ return *exp_connect_flags_ptr(exp);
+}
+
+static inline int exp_max_brw_size(struct obd_export *exp)
+{
+ LASSERT(exp != NULL);
+ if (exp_connect_flags(exp) & OBD_CONNECT_BRW_SIZE)
+ return exp->exp_connect_data.ocd_brw_size;
+
+ return ONE_MB_BRW_SIZE;
+}
+
+static inline int exp_connect_multibulk(struct obd_export *exp)
+{
+ return exp_max_brw_size(exp) > ONE_MB_BRW_SIZE;
+}
+
+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);
+ LASSERT(exp != NULL);
+ return !!(exp_connect_flags(exp) & 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);
+ LASSERT(exp != NULL);
+ return !!(exp_connect_flags(exp) & OBD_CONNECT_LRU_RESIZE);
+}
+
+static inline int exp_connect_rmtclient(struct obd_export *exp)
+{
+ LASSERT(exp != NULL);
+ return !!(exp_connect_flags(exp) & 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_connect_flags(exp) & OBD_CONNECT_VBR);
+}
+
+static inline int exp_connect_som(struct obd_export *exp)
+{
+ LASSERT(exp != NULL);
+ return !!(exp_connect_flags(exp) & OBD_CONNECT_SOM);
+}
+
+static inline int exp_connect_umask(struct obd_export *exp)
+{
+ return !!(exp_connect_flags(exp) & OBD_CONNECT_UMASK);
}
static inline int imp_connect_lru_resize(struct obd_import *imp)
return !!(ocd->ocd_connect_flags & OBD_CONNECT_LRU_RESIZE);
}
+static inline int exp_connect_layout(struct obd_export *exp)
+{
+ return !!(exp_connect_flags(exp) & OBD_CONNECT_LAYOUTLOCK);
+}
+
+static inline bool exp_connect_lvb_type(struct obd_export *exp)
+{
+ LASSERT(exp != NULL);
+ if (exp_connect_flags(exp) & OBD_CONNECT_LVB_TYPE)
+ return true;
+ else
+ return false;
+}
+
+static inline bool imp_connect_lvb_type(struct obd_import *imp)
+{
+ struct obd_connect_data *ocd;
+
+ LASSERT(imp != NULL);
+ ocd = &imp->imp_connect_data;
+ if (ocd->ocd_connect_flags & OBD_CONNECT_LVB_TYPE)
+ return true;
+ else
+ return false;
+}
+
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