X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fofd%2Fofd_internal.h;h=d7ac1da7292143319db32f6a1bf288df76943b74;hp=5d1b8803630adfa569738470a8d3a2cb2e38ed40;hb=a29c6c7c493d0c30ee4c3046d5c7d4efa4c00b1b;hpb=2dc1bb8b7a53077fce8632aabe65b2ce8048a550

diff --git a/lustre/ofd/ofd_internal.h b/lustre/ofd/ofd_internal.h
index 5d1b880..d7ac1da 100644
--- a/lustre/ofd/ofd_internal.h
+++ b/lustre/ofd/ofd_internal.h
@@ -15,11 +15,7 @@
  *
  * 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, 2013, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -42,14 +38,9 @@
 #include <dt_object.h>
 #include <md_object.h>
 #include <lustre_fid.h>
-#include <obd_ost.h>
-#include <lustre_capa.h>
 
 #define OFD_INIT_OBJID	0
-#define OFD_ROCOMPAT_SUPP (0)
-#define OFD_INCOMPAT_SUPP (OBD_INCOMPAT_GROUPS | OBD_INCOMPAT_OST | \
-			   OBD_INCOMPAT_COMMON_LR)
-#define OFD_PRECREATE_BATCH_DEFAULT (FILTER_SUBDIR_COUNT * 4)
+#define OFD_PRECREATE_BATCH_DEFAULT (OBJ_SUBDIR_COUNT * 4)
 
 /* on small filesystems we should not precreate too many objects in
  * a single transaction, otherwise we can overflow transactions */
@@ -60,137 +51,124 @@
 #define OFD_VALID_FLAGS (LA_TYPE | LA_MODE | LA_SIZE | LA_BLOCKS | \
 			 LA_BLKSIZE | LA_ATIME | LA_MTIME | LA_CTIME)
 
-/* per-client-per-object persistent state (LRU) */
-struct ofd_mod_data {
-	cfs_list_t	fmd_list;        /* linked to fed_mod_list */
-	struct lu_fid	fmd_fid;         /* FID being written to */
-	__u64		fmd_mactime_xid; /* xid highest {m,a,c}time setattr */
-	cfs_time_t	fmd_expire;      /* time when the fmd should expire */
-	int		fmd_refcount;    /* reference counter - list holds 1 */
-};
-
-#define OFD_FMD_MAX_NUM_DEFAULT 128
-#define OFD_FMD_MAX_AGE_DEFAULT ((obd_timeout + 10) * HZ)
+#define OFD_SOFT_SYNC_LIMIT_DEFAULT 16
 
-enum {
-	LPROC_OFD_READ_BYTES = 0,
-	LPROC_OFD_WRITE_BYTES = 1,
-	LPROC_OFD_LAST,
-};
+/*
+ * update atime if on-disk value older than client's one
+ * by OFD_ATIME_DIFF or more
+ */
+#define OFD_DEF_ATIME_DIFF	0 /* disabled */
 
-/* for job stats */
+/* request stats */
 enum {
-	LPROC_OFD_STATS_READ = 0,
-	LPROC_OFD_STATS_WRITE = 1,
-	LPROC_OFD_STATS_SETATTR = 2,
-	LPROC_OFD_STATS_PUNCH = 3,
-	LPROC_OFD_STATS_SYNC = 4,
+	LPROC_OFD_STATS_READ_BYTES = 0,
+	LPROC_OFD_STATS_WRITE_BYTES,
+	LPROC_OFD_STATS_READ,
+	LPROC_OFD_STATS_WRITE,
+	LPROC_OFD_STATS_GETATTR,
+	LPROC_OFD_STATS_SETATTR,
+	LPROC_OFD_STATS_PUNCH,
+	LPROC_OFD_STATS_SYNC,
+	LPROC_OFD_STATS_DESTROY,
+	LPROC_OFD_STATS_CREATE,
+	LPROC_OFD_STATS_STATFS,
+	LPROC_OFD_STATS_GET_INFO,
+	LPROC_OFD_STATS_SET_INFO,
+	LPROC_OFD_STATS_QUOTACTL,
+	LPROC_OFD_STATS_PREALLOC,
 	LPROC_OFD_STATS_LAST,
 };
 
 static inline void ofd_counter_incr(struct obd_export *exp, int opcode,
 				    char *jobid, long amount)
 {
+	if (exp->exp_obd && exp->exp_obd->obd_stats)
+		lprocfs_counter_add(exp->exp_obd->obd_stats, opcode, amount);
+
 	if (exp->exp_obd && exp->exp_obd->u.obt.obt_jobstats.ojs_hash &&
 	    (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS))
 		lprocfs_job_stats_log(exp->exp_obd, jobid, opcode, amount);
 
 	if (exp->exp_nid_stats != NULL &&
 	    exp->exp_nid_stats->nid_stats != NULL) {
-		if (opcode == LPROC_OFD_STATS_READ)
-			lprocfs_counter_add(exp->exp_nid_stats->nid_stats,
-					    LPROC_OFD_READ_BYTES, amount);
-		else if (opcode == LPROC_OFD_STATS_WRITE)
-			lprocfs_counter_add(exp->exp_nid_stats->nid_stats,
-					    LPROC_OFD_WRITE_BYTES, amount);
+		lprocfs_counter_add(exp->exp_nid_stats->nid_stats, opcode,
+				    amount);
 	}
 }
 
 struct ofd_seq {
-	cfs_list_t		os_list;
+	struct list_head	os_list;
 	struct ost_id		os_oi;
 	spinlock_t		os_last_oid_lock;
 	struct mutex		os_create_lock;
-	cfs_atomic_t		os_refc;
+	atomic_t		os_refc;
+	atomic_t		os_precreate_in_progress;
 	struct dt_object	*os_lastid_obj;
-	unsigned long		os_destroys_in_progress:1;
+	unsigned long		os_destroys_in_progress:1,
+				os_last_id_synced:1;
 };
 
 struct ofd_device {
 	struct dt_device	 ofd_dt_dev;
 	struct dt_device	*ofd_osd;
 	struct obd_export	*ofd_osd_exp;
-	struct dt_device_param	 ofd_dt_conf;
 	/* DLM name-space for meta-data locks maintained by this server */
 	struct ldlm_namespace	*ofd_namespace;
 
-	/* transaction callbacks */
-	struct dt_txn_callback	 ofd_txn_cb;
-
 	/* last_rcvd file */
 	struct lu_target	 ofd_lut;
 	struct dt_object	*ofd_health_check_file;
+	struct local_oid_storage *ofd_los;
 
-	int			 ofd_subdir_count;
+	__u64			 ofd_inconsistency_self_detected;
+	__u64			 ofd_inconsistency_self_repaired;
 
-	cfs_list_t		ofd_seq_list;
+	struct ofd_access_log	*ofd_access_log;
+	unsigned int		 ofd_access_log_size;
+	unsigned int		 ofd_access_log_mask;
+
+	struct list_head	ofd_seq_list;
 	rwlock_t		ofd_seq_list_lock;
 	int			ofd_seq_count;
 	int			ofd_precreate_batch;
 	spinlock_t		ofd_batch_lock;
 
-	/* protect all statfs-related counters */
-	spinlock_t		 ofd_osfs_lock;
-	/* statfs optimization: we cache a bit  */
-	struct obd_statfs	 ofd_osfs;
-	__u64			 ofd_osfs_age;
-	int			 ofd_blockbits;
-	/* writes which might be be accounted twice in ofd_osfs.os_bavail */
-	obd_size		 ofd_osfs_unstable;
-
-	/* counters used during statfs update, protected by ofd_osfs_lock.
-	 * record when some statfs refresh are in progress */
-	int			 ofd_statfs_inflight;
-	/* track writes completed while statfs refresh is underway.
-	 * tracking is only effective when ofd_statfs_inflight > 1 */
-	obd_size		 ofd_osfs_inflight;
-
-	/* grants: all values in bytes */
-	/* grant lock to protect all grant counters */
-	spinlock_t		 ofd_grant_lock;
-	/* total amount of dirty data reported by clients in incoming obdo */
-	obd_size		 ofd_tot_dirty;
-	/* sum of filesystem space granted to clients for async writes */
-	obd_size		 ofd_tot_granted;
-	/* grant used by I/Os in progress (between prepare and commit) */
-	obd_size		 ofd_tot_pending;
-	/* free space threshold over which we stop granting space to clients
-	 * ofd_grant_ratio is stored as a fixed-point fraction using
-	 * OFD_GRANT_RATIO_SHIFT of the remaining free space, not in percentage
-	 * values */
-	int			 ofd_grant_ratio;
-	/* number of clients using grants */
-	int			 ofd_tot_granted_clients;
-
-	/* ofd mod data: ofd_device wide values */
-	int			 ofd_fmd_max_num; /* per ofd ofd_mod_data */
-	cfs_duration_t		 ofd_fmd_max_age; /* time to fmd expiry */
+	/* preferred BRW size, decided by storage type and capability */
+	__u32			 ofd_brw_size;
+	/* checksum types supported on this node */
+	enum cksum_types	 ofd_cksum_types_supported;
 
 	spinlock_t		 ofd_flags_lock;
 	unsigned long		 ofd_raid_degraded:1,
 				 /* sync journal on writes */
-				 ofd_syncjournal:1,
-				 /* sync on lock cancel */
-				 ofd_sync_lock_cancel:2,
-				 /* shall we grant space to clients not
-				  * supporting OBD_CONNECT_GRANT_PARAM? */
-				 ofd_grant_compat_disable:1;
+				 ofd_sync_journal:1,
+				 /* Protected by ofd_lastid_rwsem. */
+				 ofd_lastid_rebuilding:1,
+				 ofd_record_fid_accessed:1,
+				 ofd_lfsck_verify_pfid:1,
+				 ofd_no_precreate:1,
+				 ofd_skip_lfsck:1,
+				 /* Whether to enforce T10PI checksum of RPC */
+				 ofd_checksum_t10pi_enforce:1;
 	struct seq_server_site	 ofd_seq_site;
+	/* the limit of SOFT_SYNC RPCs that will trigger a soft sync */
+	unsigned int		 ofd_soft_sync_limit;
+	/* Protect ::ofd_lastid_rebuilding */
+	struct rw_semaphore	 ofd_lastid_rwsem;
+	__u64			 ofd_lastid_gen;
+	struct ptlrpc_thread	 ofd_inconsistency_thread;
+	struct list_head	 ofd_inconsistency_list;
+	spinlock_t		 ofd_inconsistency_lock;
+	/* Backwards compatibility */
+	struct attribute	*ofd_read_cache_enable;
+	struct attribute	*ofd_read_cache_max_filesize;
+	struct attribute	*ofd_write_cache_enable;
+	time64_t		 ofd_atime_diff;
 };
 
 static inline struct ofd_device *ofd_dev(struct lu_device *d)
 {
-	return container_of0(d, struct ofd_device, ofd_dt_dev.dd_lu_dev);
+	return container_of_safe(d, struct ofd_device, ofd_dt_dev.dd_lu_dev);
 }
 
 static inline struct obd_device *ofd_obd(struct ofd_device *ofd)
@@ -211,12 +189,15 @@ static inline char *ofd_name(struct ofd_device *ofd)
 struct ofd_object {
 	struct lu_object_header	ofo_header;
 	struct dt_object	ofo_obj;
-	int			ofo_ff_exists;
+	struct filter_fid	ofo_ff;
+	time64_t		ofo_atime_ondisk;
+	unsigned int		ofo_pfid_checking:1,
+				ofo_pfid_verified:1;
 };
 
 static inline struct ofd_object *ofd_obj(struct lu_object *o)
 {
-	return container_of0(o, struct ofd_object, ofo_obj.do_lu);
+	return container_of_safe(o, struct ofd_object, ofo_obj.do_lu);
 }
 
 static inline int ofd_object_exists(struct ofd_object *obj)
@@ -236,7 +217,7 @@ static inline struct dt_object *ofd_object_child(struct ofd_object *_obj)
 {
 	struct lu_object *lu = &(_obj)->ofo_obj.do_lu;
 
-	return container_of0(lu_object_next(lu), struct dt_object, do_lu);
+	return container_of(lu_object_next(lu), struct dt_object, do_lu);
 }
 
 static inline struct ofd_device *ofd_obj2dev(const struct ofd_object *fo)
@@ -244,13 +225,6 @@ static inline struct ofd_device *ofd_obj2dev(const struct ofd_object *fo)
 	return ofd_dev(fo->ofo_obj.do_lu.lo_dev);
 }
 
-static inline struct lustre_capa *ofd_object_capa(const struct lu_env *env,
-						  const struct ofd_object *obj)
-{
-	/* TODO: see mdd_object_capa() */
-	return BYPASS_CAPA;
-}
-
 static inline void ofd_read_lock(const struct lu_env *env,
 				 struct ofd_object *fo)
 {
@@ -292,10 +266,7 @@ struct ofd_thread_info {
 
 	struct obd_export		*fti_exp;
 	__u64				 fti_xid;
-	__u64				 fti_transno;
 	__u64				 fti_pre_version;
-	__u32				 fti_has_trans:1, /* has txn already */
-					 fti_mult_trans:1;
 
 	struct lu_fid			 fti_fid;
 	struct lu_attr			 fti_attr;
@@ -315,37 +286,49 @@ struct ofd_thread_info {
 	struct lu_buf			 fti_buf;
 	loff_t				 fti_off;
 
-	/* Space used by the I/O, used by grant code */
-	unsigned long			 fti_used;
 	struct ost_lvb			 fti_lvb;
+	union {
+		struct lfsck_req_local	 fti_lrl;
+		struct obd_connect_data	 fti_ocd;
+	};
 };
 
 extern void target_recovery_fini(struct obd_device *obd);
 extern void target_recovery_init(struct lu_target *lut, svc_handler_t handler);
 
-/* ofd_capa.c */
-int ofd_update_capa_key(struct ofd_device *ofd, struct lustre_capa_key *key);
-int ofd_auth_capa(struct obd_export *exp, struct lu_fid *fid, obd_seq seq,
-		  struct lustre_capa *capa, __u64 opc);
-void ofd_free_capa_keys(struct ofd_device *ofd);
+/* ofd_access_log.c */
+bool ofd_access_log_size_is_valid(unsigned int size);
+int ofd_access_log_module_init(void);
+void ofd_access_log_module_exit(void);
+
+struct ofd_access_log;
+struct ofd_access_log *ofd_access_log_create(const char *ofd_name, size_t size);
+void ofd_access_log_delete(struct ofd_access_log *oal);
+void ofd_access(const struct lu_env *env, struct ofd_device *m,
+		const struct lu_fid *parent_fid, __u64 begin, __u64 end,
+		unsigned int size, unsigned int segment_count, int rw);
 
 /* ofd_dev.c */
 extern struct lu_context_key ofd_thread_key;
 int ofd_postrecov(const struct lu_env *env, struct ofd_device *ofd);
+int ofd_fiemap_get(const struct lu_env *env, struct ofd_device *ofd,
+		   struct lu_fid *fid, struct fiemap *fiemap);
 
 /* ofd_obd.c */
-extern struct obd_ops ofd_obd_ops;
-int ofd_statfs_internal(const struct lu_env *env, struct ofd_device *ofd,
-			struct obd_statfs *osfs, __u64 max_age,
-			int *from_cache);
+extern const struct obd_ops ofd_obd_ops;
+int ofd_destroy_by_fid(const struct lu_env *env, struct ofd_device *ofd,
+		       const struct lu_fid *fid, int orphan);
+int ofd_statfs(const struct lu_env *env,  struct obd_export *exp,
+	       struct obd_statfs *osfs, time64_t max_age, __u32 flags);
+int ofd_obd_disconnect(struct obd_export *exp);
 
 /* ofd_fs.c */
-obd_id ofd_seq_last_oid(struct ofd_seq *oseq);
-void ofd_seq_last_oid_set(struct ofd_seq *oseq, obd_id id);
+u64 ofd_seq_last_oid(struct ofd_seq *oseq);
+void ofd_seq_last_oid_set(struct ofd_seq *oseq, u64 id);
 int ofd_seq_last_oid_write(const struct lu_env *env, struct ofd_device *ofd,
 			   struct ofd_seq *oseq);
 int ofd_seqs_init(const struct lu_env *env, struct ofd_device *ofd);
-struct ofd_seq *ofd_seq_get(struct ofd_device *ofd, obd_seq seq);
+struct ofd_seq *ofd_seq_get(struct ofd_device *ofd, u64 seq);
 void ofd_seq_put(const struct lu_env *env, struct ofd_seq *oseq);
 
 int ofd_fs_setup(const struct lu_env *env, struct ofd_device *ofd,
@@ -353,20 +336,25 @@ int ofd_fs_setup(const struct lu_env *env, struct ofd_device *ofd,
 void ofd_fs_cleanup(const struct lu_env *env, struct ofd_device *ofd);
 int ofd_precreate_batch(struct ofd_device *ofd, int batch);
 struct ofd_seq *ofd_seq_load(const struct lu_env *env, struct ofd_device *ofd,
-			     obd_seq seq);
+			     u64 seq);
 void ofd_seqs_fini(const struct lu_env *env, struct ofd_device *ofd);
+void ofd_seqs_free(const struct lu_env *env, struct ofd_device *ofd);
 
 /* ofd_io.c */
+int ofd_start_inconsistency_verification_thread(struct ofd_device *ofd);
+int ofd_stop_inconsistency_verification_thread(struct ofd_device *ofd);
+int ofd_verify_ff(const struct lu_env *env, struct ofd_object *fo,
+		  struct obdo *oa);
+int ofd_verify_layout_version(const struct lu_env *env,
+			      struct ofd_object *fo, const struct obdo *oa);
 int ofd_preprw(const struct lu_env *env,int cmd, struct obd_export *exp,
 	       struct obdo *oa, int objcount, struct obd_ioobj *obj,
 	       struct niobuf_remote *rnb, int *nr_local,
-	       struct niobuf_local *lnb, struct obd_trans_info *oti,
-	       struct lustre_capa *capa);
+	       struct niobuf_local *lnb);
 int ofd_commitrw(const struct lu_env *env, int cmd, struct obd_export *exp,
 		 struct obdo *oa, int objcount, struct obd_ioobj *obj,
 		 struct niobuf_remote *rnb, int npages,
-		 struct niobuf_local *lnb, struct obd_trans_info *oti,
-		 int old_rc);
+		 struct niobuf_local *lnb, int old_rc);
 
 /* ofd_trans.c */
 struct thandle *ofd_trans_create(const struct lu_env *env,
@@ -374,117 +362,64 @@ struct thandle *ofd_trans_create(const struct lu_env *env,
 int ofd_trans_start(const struct lu_env *env,
 		    struct ofd_device *ofd, struct ofd_object *fo,
 		    struct thandle *th);
-void ofd_trans_stop(const struct lu_env *env, struct ofd_device *ofd,
+int ofd_trans_stop(const struct lu_env *env, struct ofd_device *ofd,
 		    struct thandle *th, int rc);
 int ofd_txn_stop_cb(const struct lu_env *env, struct thandle *txn,
 		    void *cookie);
 
 /* lproc_ofd.c */
-#ifdef LPROCFS
-void lprocfs_ofd_init_vars(struct lprocfs_static_vars *lvars);
-void ofd_stats_counter_init(struct lprocfs_stats *stats);
+int ofd_tunables_init(struct ofd_device *ofd);
+#ifdef CONFIG_PROC_FS
+void ofd_stats_counter_init(struct lprocfs_stats *stats, unsigned int offset);
 #else
-static void lprocfs_ofd_init_vars(struct lprocfs_static_vars *lvars)
-{
-	memset(lvars, 0, sizeof(*lvars));
-}
-static inline void ofd_stats_counter_init(struct lprocfs_stats *stats) {}
+static inline void ofd_stats_counter_init(struct lprocfs_stats *stats,
+					  unsigned int offset) {}
 #endif
 
 /* ofd_objects.c */
 struct ofd_object *ofd_object_find(const struct lu_env *env,
 				   struct ofd_device *ofd,
 				   const struct lu_fid *fid);
-struct ofd_object *ofd_object_find_or_create(const struct lu_env *env,
-					     struct ofd_device *ofd,
-					     const struct lu_fid *fid,
-					     struct lu_attr *attr);
-int ofd_object_ff_check(const struct lu_env *env, struct ofd_object *fo);
+int ofd_object_ff_load(const struct lu_env *env, struct ofd_object *fo);
+int ofd_object_ff_update(const struct lu_env *env, struct ofd_object *fo,
+			 const struct obdo *oa, struct filter_fid *ff);
 int ofd_precreate_objects(const struct lu_env *env, struct ofd_device *ofd,
-			  obd_id id, struct ofd_seq *oseq, int nr, int sync);
+			  u64 id, struct ofd_seq *oseq, int nr, int sync);
 
-void ofd_object_put(const struct lu_env *env, struct ofd_object *fo);
+static inline void ofd_object_put(const struct lu_env *env,
+				  struct ofd_object *fo)
+{
+	dt_object_put(env, &fo->ofo_obj);
+}
 int ofd_attr_set(const struct lu_env *env, struct ofd_object *fo,
-		 struct lu_attr *la, struct filter_fid *ff);
+		 struct lu_attr *la, struct obdo *oa);
 int ofd_object_punch(const struct lu_env *env, struct ofd_object *fo,
 		     __u64 start, __u64 end, struct lu_attr *la,
-		     struct filter_fid *ff);
-int ofd_object_destroy(const struct lu_env *, struct ofd_object *, int);
+		     struct obdo *oa);
+int ofd_object_fallocate(const struct lu_env *env, struct ofd_object *fo,
+			 __u64 start, __u64 end, int mode, struct lu_attr *la,
+			 struct obdo *oa);
+int ofd_destroy(const struct lu_env *, struct ofd_object *, int);
 int ofd_attr_get(const struct lu_env *env, struct ofd_object *fo,
 		 struct lu_attr *la);
-int ofd_attr_handle_ugid(const struct lu_env *env, struct ofd_object *fo,
+int ofd_attr_handle_id(const struct lu_env *env, struct ofd_object *fo,
 			 struct lu_attr *la, int is_setattr);
 
-/* ofd_grants.c */
-#define OFD_GRANT_RATIO_SHIFT 8
-static inline __u64 ofd_grant_reserved(struct ofd_device *ofd, obd_size bavail)
+static inline
+struct ofd_object *ofd_object_find_exists(const struct lu_env *env,
+					  struct ofd_device *ofd,
+					  const struct lu_fid *fid)
 {
-	return (bavail * ofd->ofd_grant_ratio) >> OFD_GRANT_RATIO_SHIFT;
-}
-
-static inline int ofd_grant_ratio_conv(int percentage)
-{
-	return (percentage << OFD_GRANT_RATIO_SHIFT) / 100;
-}
-
-static inline int ofd_grant_param_supp(struct obd_export *exp)
-{
-	return !!(exp_connect_flags(exp) & OBD_CONNECT_GRANT_PARAM);
-}
+	struct ofd_object *fo;
 
-/* Blocksize used for client not supporting OBD_CONNECT_GRANT_PARAM.
- * That's 4KB=2^12 which is the biggest block size known to work whatever
- * the client's page size is. */
-#define COMPAT_BSIZE_SHIFT 12
-static inline int ofd_grant_compat(struct obd_export *exp,
-				   struct ofd_device *ofd)
-{
-	/* Clients which don't support OBD_CONNECT_GRANT_PARAM cannot handle
-	 * a block size > page size and consume PAGE_CACHE_SIZE of grant when
-	 * dirtying a page regardless of the block size */
-	return !!(ofd_obd(ofd)->obd_self_export != exp &&
-		  ofd->ofd_blockbits > COMPAT_BSIZE_SHIFT &&
-		  !ofd_grant_param_supp(exp));
-}
-
-static inline int ofd_grant_prohibit(struct obd_export *exp,
-				     struct ofd_device *ofd)
-{
-	/* When ofd_grant_compat_disable is set, we don't grant any space to
-	 * clients not supporting OBD_CONNECT_GRANT_PARAM.
-	 * Otherwise, space granted to such a client is inflated since it
-	 * consumes PAGE_CACHE_SIZE of grant space per block */
-	return !!(ofd_grant_compat(exp, ofd) && ofd->ofd_grant_compat_disable);
+	fo = ofd_object_find(env, ofd, fid);
+	if (!IS_ERR(fo) && !ofd_object_exists(fo)) {
+		ofd_object_put(env, fo);
+		fo = ERR_PTR(-ENOENT);
+	}
+	return fo;
 }
 
-void ofd_grant_sanity_check(struct obd_device *obd, const char *func);
-long ofd_grant_connect(const struct lu_env *env, struct obd_export *exp,
-		       obd_size want, bool conservative);
-void ofd_grant_discard(struct obd_export *exp);
-void ofd_grant_prepare_read(const struct lu_env *env, struct obd_export *exp,
-			    struct obdo *oa);
-void ofd_grant_prepare_write(const struct lu_env *env, struct obd_export *exp,
-			     struct obdo *oa, struct niobuf_remote *rnb,
-			     int niocount);
-void ofd_grant_commit(const struct lu_env *env, struct obd_export *exp, int rc);
-int ofd_grant_create(const struct lu_env *env, struct obd_export *exp, int *nr);
-
-/* ofd_fmd.c */
-int ofd_fmd_init(void);
-void ofd_fmd_exit(void);
-struct ofd_mod_data *ofd_fmd_find(struct obd_export *exp,
-				  struct lu_fid *fid);
-struct ofd_mod_data *ofd_fmd_get(struct obd_export *exp,
-				 struct lu_fid *fid);
-void ofd_fmd_put(struct obd_export *exp, struct ofd_mod_data *fmd);
-void ofd_fmd_expire(struct obd_export *exp);
-void ofd_fmd_cleanup(struct obd_export *exp);
-#ifdef DO_FMD_DROP
-void ofd_fmd_drop(struct obd_export *exp, struct lu_fid *fid);
-#else
-#define ofd_fmd_drop(exp, fid) do {} while (0)
-#endif
-
 /* ofd_dev.c */
 int ofd_fid_set_index(const struct lu_env *env, struct ofd_device *ofd,
 		      int index);
@@ -495,28 +430,23 @@ int ofd_fid_fini(const struct lu_env *env, struct ofd_device *ofd);
 extern struct ldlm_valblock_ops ofd_lvbo;
 
 /* ofd_dlm.c */
-int ofd_intent_policy(struct ldlm_namespace *ns, struct ldlm_lock **lockp,
-		      void *req_cookie, ldlm_mode_t mode, __u64 flags,
-		      void *data);
+extern struct kmem_cache *ldlm_glimpse_work_kmem;
 
-static inline struct ofd_thread_info * ofd_info(const struct lu_env *env)
-{
-	struct ofd_thread_info *info;
+int ofd_intent_policy(const struct lu_env *env, struct ldlm_namespace *ns,
+		      struct ldlm_lock **lockp, void *req_cookie,
+		      enum ldlm_mode mode, __u64 flags, void *data);
 
-	info = lu_context_key_get(&env->le_ctx, &ofd_thread_key);
-	LASSERT(info);
-	LASSERT(info->fti_env);
-	LASSERT(info->fti_env == env);
-	return info;
+static inline struct ofd_thread_info *ofd_info(const struct lu_env *env)
+{
+	return lu_env_info(env, &ofd_thread_key);
 }
 
-static inline struct ofd_thread_info * ofd_info_init(const struct lu_env *env,
-						     struct obd_export *exp)
+static inline struct ofd_thread_info *ofd_info_init(const struct lu_env *env,
+						    struct obd_export *exp)
 {
 	struct ofd_thread_info *info;
 
-	info = lu_context_key_get(&env->le_ctx, &ofd_thread_key);
-	LASSERT(info);
+	info = ofd_info(env);
 	LASSERT(info->fti_exp == NULL);
 	LASSERT(info->fti_env == NULL);
 	LASSERT(info->fti_attr.la_valid == 0);
@@ -524,29 +454,31 @@ static inline struct ofd_thread_info * ofd_info_init(const struct lu_env *env,
 	info->fti_env = env;
 	info->fti_exp = exp;
 	info->fti_pre_version = 0;
-	info->fti_transno = 0;
-	info->fti_has_trans = 0;
 	return info;
 }
 
-static inline void ofd_oti2info(struct ofd_thread_info *info,
-				struct obd_trans_info *oti)
+static inline struct ofd_thread_info *tsi2ofd_info(struct tgt_session_info *tsi)
 {
-	info->fti_xid = oti->oti_xid;
-	info->fti_transno = oti->oti_transno;
-	info->fti_pre_version = oti->oti_pre_version;
-}
+	struct ptlrpc_request	*req = tgt_ses_req(tsi);
+	struct ofd_thread_info	*info;
 
-static inline void ofd_info2oti(struct ofd_thread_info *info,
-                                struct obd_trans_info *oti)
-{
-	oti->oti_xid = info->fti_xid;
-	LASSERTF(ergo(oti->oti_transno > 0,
-		      oti->oti_transno == info->fti_transno),
-		 "Overwrite replay transno "LPX64" by "LPX64"\n",
-		 oti->oti_transno, info->fti_transno);
-	oti->oti_transno = info->fti_transno;
-	oti->oti_pre_version = info->fti_pre_version;
+	info = ofd_info(tsi->tsi_env);
+	LASSERT(info->fti_exp == NULL);
+	LASSERT(info->fti_env == NULL);
+	LASSERT(info->fti_attr.la_valid == 0);
+
+	info->fti_env = tsi->tsi_env;
+	info->fti_exp = tsi->tsi_exp;
+
+	info->fti_xid = req->rq_xid;
+	/** VBR: take versions from request */
+	if (req->rq_reqmsg != NULL &&
+	    lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) {
+		__u64 *pre_version = lustre_msg_get_versions(req->rq_reqmsg);
+
+		info->fti_pre_version = pre_version ? pre_version[0] : 0;
+	}
+	return info;
 }
 
 /* sync on lock cancel is useless when we force a journal flush,
@@ -554,32 +486,24 @@ static inline void ofd_info2oti(struct ofd_thread_info *info,
  * sync on lock cancel if it is not enabled already. */
 static inline void ofd_slc_set(struct ofd_device *ofd)
 {
-	if (ofd->ofd_syncjournal == 1)
-		ofd->ofd_sync_lock_cancel = NEVER_SYNC_ON_CANCEL;
-	else if (ofd->ofd_sync_lock_cancel == NEVER_SYNC_ON_CANCEL)
-		ofd->ofd_sync_lock_cancel = ALWAYS_SYNC_ON_CANCEL;
+	if (ofd->ofd_sync_journal == 1)
+		ofd->ofd_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_NEVER;
+	else if (ofd->ofd_lut.lut_sync_lock_cancel == SYNC_LOCK_CANCEL_NEVER)
+		ofd->ofd_lut.lut_sync_lock_cancel = SYNC_LOCK_CANCEL_ALWAYS;
 }
 
-static inline void ofd_prepare_fidea(struct filter_fid *ff, struct obdo *oa)
+static inline int ofd_validate_seq(struct obd_export *exp, __u64 seq)
 {
-	if (!(oa->o_valid & OBD_MD_FLGROUP))
-		ostid_set_seq_mdt0(&oa->o_oi);
-	/* packing fid and converting it to LE for storing into EA.
-	 * Here ->o_stripe_idx should be filled by LOV and rest of
-	 * fields - by client. */
-	ff->ff_parent.f_seq = cpu_to_le64(oa->o_parent_seq);
-	ff->ff_parent.f_oid = cpu_to_le32(oa->o_parent_oid);
-	/* XXX: we are ignoring o_parent_ver here, since this should
-	 *      be the same for all objects in this fileset. */
-	ff->ff_parent.f_ver = cpu_to_le32(oa->o_stripe_idx);
-}
+	struct filter_export_data *fed = &exp->exp_filter_data;
 
-/* niobuf_remote has no rnb_ prefix in master */
-#define rnb_offset offset
-#define rnb_flags  flags
-#define rnb_len    len
-/* the same for niobuf_local */
-#define lnb_flags flags
-#define lnb_rc    rc
+	if (unlikely(seq == FID_SEQ_OST_MDT0 && fed->fed_group != 0)) {
+		/* IDIF request only operates on MDT0 group */
+		CERROR("%s: Invalid sequence %#llx for group %u\n",
+		       exp->exp_obd->obd_name, seq, fed->fed_group);
+		RETURN(-EINVAL);
+	}
+
+	return 0;
+}
 
 #endif /* _OFD_INTERNAL_H */