X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fosp%2Fosp_internal.h;h=d405176cdb35bb9ca4ace91c2e25698d15e112e8;hb=96c0696453f3aaf5c29a46fd7c6f0bdc25301d71;hp=f22e1b2bd5c8a1cc5560cdcfc475841a66a75104;hpb=044546f88a638b98c5d2016da6e85ea72dd1a391;p=fs%2Flustre-release.git

diff --git a/lustre/osp/osp_internal.h b/lustre/osp/osp_internal.h
index f22e1b2..d405176 100644
--- a/lustre/osp/osp_internal.h
+++ b/lustre/osp/osp_internal.h
@@ -27,7 +27,7 @@
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2011, 2012, Intel, Inc.
+ * Copyright (c) 2012, 2013, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -42,16 +42,77 @@
 #define _OSP_INTERNAL_H
 
 #include <obd.h>
+#include <obd_class.h>
 #include <dt_object.h>
+#include <md_object.h>
 #include <lustre_fid.h>
+#include <lustre_update.h>
+#include <lu_target.h>
+
+/*
+ * Infrastructure to support tracking of last committed llog record
+ */
+struct osp_id_tracker {
+	spinlock_t		 otr_lock;
+	__u32			 otr_next_id;
+	__u32			 otr_committed_id;
+	/* callback is register once per diskfs -- that's the whole point */
+	struct dt_txn_callback	 otr_tx_cb;
+	/* single node can run many clusters */
+	cfs_list_t		 otr_wakeup_list;
+	cfs_list_t		 otr_list;
+	/* underlying shared device */
+	struct dt_device	*otr_dev;
+	/* how many users of this tracker */
+	cfs_atomic_t		 otr_refcount;
+};
+
+struct osp_precreate {
+	/*
+	 * Precreation pool
+	 */
+	spinlock_t			 osp_pre_lock;
+
+	/* last fid to assign in creation */
+	struct lu_fid			 osp_pre_used_fid;
+	/* last created id OST reported, next-created - available id's */
+	struct lu_fid			 osp_pre_last_created_fid;
+	/* how many ids are reserved in declare, we shouldn't block in create */
+	__u64				 osp_pre_reserved;
+	/* consumers (who needs new ids) wait here */
+	wait_queue_head_t		 osp_pre_user_waitq;
+	/* current precreation status: working, failed, stopping? */
+	int				 osp_pre_status;
+	/* how many to precreate next time */
+	int				 osp_pre_grow_count;
+	int				 osp_pre_min_grow_count;
+	int				 osp_pre_max_grow_count;
+	/* whether to grow precreation window next time or not */
+	int				 osp_pre_grow_slow;
+	/* cleaning up orphans or recreating missing objects */
+	int				 osp_pre_recovering;
+};
 
 struct osp_device {
 	struct dt_device		 opd_dt_dev;
 	/* corresponded OST index */
 	int				 opd_index;
+
+	/* corrsponded MDT index, which will be used when connecting to OST
+	 * for validating the connection (see ofd_parse_connect_data) */
+	int				 opd_group;
 	/* device used to store persistent state (llogs, last ids) */
 	struct obd_export		*opd_storage_exp;
 	struct dt_device		*opd_storage;
+	struct dt_object		*opd_last_used_oid_file;
+	struct dt_object		*opd_last_used_seq_file;
+
+	/* stored persistently in LE format, updated directly to/from disk
+	 * and required le64_to_cpu() conversion before use.
+	 * Protected by opd_pre_lock */
+	struct lu_fid			opd_last_used_fid;
+	struct lu_fid			opd_gap_start_fid;
+	int				 opd_gap_count;
 	/* connection to OST */
 	struct obd_device		*opd_obd;
 	struct obd_export		*opd_exp;
@@ -61,34 +122,188 @@ struct osp_device {
 	cfs_proc_dir_entry_t		*opd_proc_entry;
 	struct lprocfs_stats		*opd_stats;
 	/* connection status. */
-	int				 opd_new_connection;
-	int				 opd_got_disconnected;
-	int				 opd_imp_connected;
-	int				 opd_imp_active;
-	int				 opd_imp_seen_connected:1;
+	unsigned int			 opd_new_connection:1,
+					 opd_got_disconnected:1,
+					 opd_imp_connected:1,
+					 opd_imp_active:1,
+					 opd_imp_seen_connected:1,
+					 opd_connect_mdt:1;
 
 	/* whether local recovery is completed:
 	 * reported via ->ldo_recovery_complete() */
 	int				 opd_recovery_completed;
 
+	/* precreate structure for OSP */
+	struct osp_precreate		*opd_pre;
+	/* dedicate precreate thread */
+	struct ptlrpc_thread		 opd_pre_thread;
+	/* thread waits for signals about pool going empty */
+	wait_queue_head_t		 opd_pre_waitq;
+
+	/*
+	 * OST synchronization
+	 */
+	spinlock_t			 opd_syn_lock;
+	/* unique generation, to recognize start of new records in the llog */
+	struct llog_gen			 opd_syn_generation;
+	/* number of changes to sync, used to wake up sync thread */
+	unsigned long			 opd_syn_changes;
+	/* processing of changes from previous mount is done? */
+	int				 opd_syn_prev_done;
+	/* found records */
+	struct ptlrpc_thread		 opd_syn_thread;
+	wait_queue_head_t		 opd_syn_waitq;
+	/* list of remotely committed rpc */
+	cfs_list_t			 opd_syn_committed_there;
+	/* number of changes being under sync */
+	int				 opd_syn_sync_in_progress;
+	/* number of RPCs in flight - flow control */
+	int				 opd_syn_rpc_in_flight;
+	int				 opd_syn_max_rpc_in_flight;
+	/* number of RPC in processing (including non-committed by OST) */
+	int				 opd_syn_rpc_in_progress;
+	int				 opd_syn_max_rpc_in_progress;
+	/* osd api's commit cb control structure */
+	struct dt_txn_callback		 opd_syn_txn_cb;
+	/* last used change number -- semantically similar to transno */
+	unsigned long			 opd_syn_last_used_id;
+	/* last committed change number -- semantically similar to
+	 * last_committed */
+	unsigned long			 opd_syn_last_committed_id;
+	/* last processed (taken from llog) id */
+	unsigned long			 opd_syn_last_processed_id;
+	struct osp_id_tracker		*opd_syn_tracker;
+	cfs_list_t			 opd_syn_ontrack;
+
+	/*
+	 * statfs related fields: OSP maintains it on its own
+	 */
+	struct obd_statfs		 opd_statfs;
+	cfs_time_t			 opd_statfs_fresh_till;
+	struct timer_list			 opd_statfs_timer;
+	int				 opd_statfs_update_in_progress;
+	/* how often to update statfs data */
+	int				 opd_statfs_maxage;
+
 	cfs_proc_dir_entry_t		*opd_symlink;
+
+	/* If the caller wants to do some idempotent async operations on
+	 * remote server, it can append the async remote requests on the
+	 * osp_device::opd_async_requests via declare() functions, these
+	 * requests can be packed together and sent to the remote server
+	 * via single OUT RPC later. */
+	struct dt_update_request	*opd_async_requests;
+	/* Protect current operations on opd_async_requests. */
+	struct mutex			 opd_async_requests_mutex;
+	struct semaphore		 opd_async_fc_sem;
 };
 
-extern cfs_mem_cache_t *osp_object_kmem;
+#define opd_pre_lock			opd_pre->osp_pre_lock
+#define opd_pre_used_fid		opd_pre->osp_pre_used_fid
+#define opd_pre_last_created_fid	opd_pre->osp_pre_last_created_fid
+#define opd_pre_reserved		opd_pre->osp_pre_reserved
+#define opd_pre_user_waitq		opd_pre->osp_pre_user_waitq
+#define opd_pre_status			opd_pre->osp_pre_status
+#define opd_pre_grow_count		opd_pre->osp_pre_grow_count
+#define opd_pre_min_grow_count		opd_pre->osp_pre_min_grow_count
+#define opd_pre_max_grow_count		opd_pre->osp_pre_max_grow_count
+#define opd_pre_grow_slow		opd_pre->osp_pre_grow_slow
+#define opd_pre_recovering		opd_pre->osp_pre_recovering
+
+extern struct kmem_cache *osp_object_kmem;
+
+/* The first part of oxe_buf is xattr name, and is '\0' terminated.
+ * The left part is for value, binary mode. */
+struct osp_xattr_entry {
+	struct list_head	 oxe_list;
+	atomic_t		 oxe_ref;
+	void			*oxe_value;
+	int			 oxe_buflen;
+	int			 oxe_namelen;
+	int			 oxe_vallen;
+	unsigned int		 oxe_exist:1,
+				 oxe_ready:1;
+	char			 oxe_buf[0];
+};
+
+struct osp_object_attr {
+	struct lu_attr		ooa_attr;
+	struct list_head	ooa_xattr_list;
+};
 
 /* this is a top object */
 struct osp_object {
-	struct lu_object_header	 opo_header;
-	struct dt_object	 opo_obj;
-	int			 opo_reserved;
+	struct lu_object_header	opo_header;
+	struct dt_object	opo_obj;
+	unsigned int		opo_reserved:1,
+				opo_new:1,
+				opo_empty:1,
+				opo_non_exist:1;
+
+	/* read/write lock for md osp object */
+	struct rw_semaphore	opo_sem;
+	const struct lu_env	*opo_owner;
+	struct osp_object_attr *opo_ooa;
+	/* Protect opo_ooa. */
+	spinlock_t		opo_lock;
 };
 
 extern struct lu_object_operations osp_lu_obj_ops;
+extern const struct dt_device_operations osp_dt_ops;
+extern struct dt_object_operations osp_md_obj_ops;
+extern struct dt_body_operations osp_md_body_ops;
 
 struct osp_thread_info {
+	struct lu_buf		 osi_lb;
+	struct lu_buf		 osi_lb2;
+	struct lu_fid		 osi_fid;
 	struct lu_attr		 osi_attr;
+	struct ost_id		 osi_oi;
+	struct ost_id		 osi_oi2;
+	obd_id			 osi_id;
+	loff_t			 osi_off;
+	union {
+		struct llog_rec_hdr		osi_hdr;
+		struct llog_unlink64_rec	osi_unlink;
+		struct llog_setattr64_rec	osi_setattr;
+		struct llog_gen_rec		osi_gen;
+	};
+	struct llog_cookie	 osi_cookie;
+	struct llog_catid	 osi_cid;
+	struct lu_seq_range	 osi_seq;
+	struct ldlm_res_id	 osi_resid;
+	struct obdo		 osi_obdo;
 };
 
+/* The transaction only include the updates on the remote node, and
+ * no local updates at all */
+static inline bool is_only_remote_trans(struct thandle *th)
+{
+	return th->th_dev != NULL && th->th_dev->dd_ops == &osp_dt_ops;
+}
+
+static inline void osp_objid_buf_prep(struct lu_buf *buf, loff_t *off,
+				      __u32 *id, int index)
+{
+	buf->lb_buf = (void *)id;
+	buf->lb_len = sizeof(obd_id);
+	*off = sizeof(obd_id) * index;
+}
+
+static inline void osp_objseq_buf_prep(struct lu_buf *buf, loff_t *off,
+				       __u64 *seq, int index)
+{
+	buf->lb_buf = (void *)seq;
+	buf->lb_len = sizeof(obd_id);
+	*off = sizeof(obd_id) * index;
+}
+
+static inline void osp_buf_prep(struct lu_buf *lb, void *buf, int buf_len)
+{
+	lb->lb_buf = buf;
+	lb->lb_len = buf_len;
+}
+
 extern struct lu_context_key osp_thread_key;
 
 static inline struct osp_thread_info *osp_env_info(const struct lu_env *env)
@@ -170,7 +385,166 @@ static inline struct dt_object *osp_object_child(struct osp_object *o)
                              struct dt_object, do_lu);
 }
 
+static inline struct seq_server_site *osp_seq_site(struct osp_device *osp)
+{
+	return osp->opd_dt_dev.dd_lu_dev.ld_site->ld_seq_site;
+}
+
+#define osp_init_rpc_lock(lck) mdc_init_rpc_lock(lck)
+#define osp_get_rpc_lock(lck, it)  mdc_get_rpc_lock(lck, it)
+#define osp_put_rpc_lock(lck, it) mdc_put_rpc_lock(lck, it)
+
+static inline void osp_update_last_fid(struct osp_device *d, struct lu_fid *fid)
+{
+	int diff = lu_fid_diff(fid, &d->opd_last_used_fid);
+	/*
+	 * we might have lost precreated objects due to VBR and precreate
+	 * orphans, the gap in objid can be calculated properly only here
+	 */
+	if (diff > 0) {
+		if (diff > 1) {
+			d->opd_gap_start_fid = d->opd_last_used_fid;
+			d->opd_gap_start_fid.f_oid++;
+			d->opd_gap_count = diff - 1;
+			CDEBUG(D_HA, "Gap in objids: start="DFID", count =%d\n",
+			       PFID(&d->opd_gap_start_fid), d->opd_gap_count);
+		}
+		d->opd_last_used_fid = *fid;
+	}
+}
+
+static int osp_fid_end_seq(const struct lu_env *env, struct lu_fid *fid)
+{
+	if (fid_is_idif(fid)) {
+		struct osp_thread_info *info = osp_env_info(env);
+		struct ost_id *oi = &info->osi_oi;
+
+		fid_to_ostid(fid, oi);
+		return ostid_id(oi) == IDIF_MAX_OID;
+	} else {
+		return fid_oid(fid) == LUSTRE_DATA_SEQ_MAX_WIDTH;
+	}
+}
+
+static inline int osp_precreate_end_seq_nolock(const struct lu_env *env,
+					       struct osp_device *osp)
+{
+	struct lu_fid *fid = &osp->opd_pre_last_created_fid;
+
+	return osp_fid_end_seq(env, fid);
+}
+
+static inline int osp_precreate_end_seq(const struct lu_env *env,
+					struct osp_device *osp)
+{
+	int rc;
+
+	spin_lock(&osp->opd_pre_lock);
+	rc = osp_precreate_end_seq_nolock(env, osp);
+	spin_unlock(&osp->opd_pre_lock);
+	return rc;
+}
+
+static inline int osp_is_fid_client(struct osp_device *osp)
+{
+	struct obd_import *imp = osp->opd_obd->u.cli.cl_import;
+
+	return imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_FID;
+}
+
+typedef int (*osp_async_update_interpterer_t)(const struct lu_env *env,
+					      struct object_update_reply *reply,
+					      struct osp_object *obj,
+					      void *data, int index, int rc);
+
+/* osp_dev.c */
+void osp_update_last_id(struct osp_device *d, obd_id objid);
+extern struct llog_operations osp_mds_ost_orig_logops;
+
+/* osp_trans.c */
+struct dt_update_request *
+osp_find_or_create_async_update_request(struct osp_device *osp);
+int osp_insert_async_update(const struct lu_env *env,
+			    struct dt_update_request *update, int op,
+			    struct osp_object *obj, int count,
+			    int *lens, const char **bufs, void *data,
+			    osp_async_update_interpterer_t interpterer);
+int osp_unplug_async_update(const struct lu_env *env,
+			    struct osp_device *osp,
+			    struct dt_update_request *update);
+struct thandle *osp_trans_create(const struct lu_env *env,
+				 struct dt_device *d);
+int osp_trans_start(const struct lu_env *env, struct dt_device *dt,
+		    struct thandle *th);
+
+/* osp_object.c */
+int osp_attr_get(const struct lu_env *env, struct dt_object *dt,
+		 struct lu_attr *attr, struct lustre_capa *capa);
+int osp_xattr_get(const struct lu_env *env, struct dt_object *dt,
+		  struct lu_buf *buf, const char *name,
+		  struct lustre_capa *capa);
+int osp_declare_xattr_set(const struct lu_env *env, struct dt_object *dt,
+			  const struct lu_buf *buf, const char *name,
+			  int flag, struct thandle *th);
+int osp_xattr_set(const struct lu_env *env, struct dt_object *dt,
+		  const struct lu_buf *buf, const char *name, int fl,
+		  struct thandle *th, struct lustre_capa *capa);
+int osp_declare_object_destroy(const struct lu_env *env,
+			       struct dt_object *dt, struct thandle *th);
+int osp_object_destroy(const struct lu_env *env, struct dt_object *dt,
+		       struct thandle *th);
+
+int osp_trans_stop(const struct lu_env *env, struct dt_device *dt,
+		   struct thandle *th);
+
+/* osp_md_object.c */
+int osp_md_declare_object_create(const struct lu_env *env,
+				 struct dt_object *dt,
+				 struct lu_attr *attr,
+				 struct dt_allocation_hint *hint,
+				 struct dt_object_format *dof,
+				 struct thandle *th);
+int osp_md_object_create(const struct lu_env *env, struct dt_object *dt,
+			 struct lu_attr *attr, struct dt_allocation_hint *hint,
+			 struct dt_object_format *dof, struct thandle *th);
+int osp_md_declare_attr_set(const struct lu_env *env, struct dt_object *dt,
+			    const struct lu_attr *attr, struct thandle *th);
+int osp_md_attr_set(const struct lu_env *env, struct dt_object *dt,
+		    const struct lu_attr *attr, struct thandle *th,
+		    struct lustre_capa *capa);
+
+/* osp_precreate.c */
+int osp_init_precreate(struct osp_device *d);
+int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d);
+__u64 osp_precreate_get_id(struct osp_device *d);
+int osp_precreate_get_fid(const struct lu_env *env, struct osp_device *d,
+			  struct lu_fid *fid);
+void osp_precreate_fini(struct osp_device *d);
+int osp_object_truncate(const struct lu_env *env, struct dt_object *dt, __u64);
+void osp_pre_update_status(struct osp_device *d, int rc);
+void osp_statfs_need_now(struct osp_device *d);
+int osp_reset_last_used(const struct lu_env *env, struct osp_device *osp);
+int osp_write_last_oid_seq_files(struct lu_env *env, struct osp_device *osp,
+				 struct lu_fid *fid, int sync);
+int osp_init_pre_fid(struct osp_device *osp);
+
 /* lproc_osp.c */
 void lprocfs_osp_init_vars(struct lprocfs_static_vars *lvars);
+void osp_lprocfs_init(struct osp_device *osp);
+
+/* osp_sync.c */
+int osp_sync_declare_add(const struct lu_env *env, struct osp_object *o,
+			 llog_op_type type, struct thandle *th);
+int osp_sync_add(const struct lu_env *env, struct osp_object *o,
+		 llog_op_type type, struct thandle *th,
+		 const struct lu_attr *attr);
+int osp_sync_init(const struct lu_env *env, struct osp_device *d);
+int osp_sync_fini(struct osp_device *d);
+void __osp_sync_check_for_work(struct osp_device *d);
+
+/* lwp_dev.c */
+void lprocfs_lwp_init_vars(struct lprocfs_static_vars *lvars);
+extern struct obd_ops lwp_obd_device_ops;
+extern struct lu_device_type lwp_device_type;
 
 #endif