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- b=15936. Unified last_rcvd format for MDS and OSS
authortappro <tappro>
Thu, 19 Jun 2008 10:48:11 +0000 (10:48 +0000)
committertappro <tappro>
Thu, 19 Jun 2008 10:48:11 +0000 (10:48 +0000)
  i:nathan, adilger

lustre/include/lustre_disk.h
lustre/include/lustre_export.h
lustre/mdt/mdt_handler.c
lustre/mdt/mdt_internal.h
lustre/mdt/mdt_open.c
lustre/mdt/mdt_recovery.c
lustre/obdfilter/filter.c
lustre/obdfilter/filter_internal.h

index 00eeca0..ccb1340 100644 (file)
 #define LDD_F_PARAM         0x0400 /* process as lctl conf_param */
 
 enum ldd_mount_type {
-        LDD_MT_EXT3 = 0, 
+        LDD_MT_EXT3 = 0,
         LDD_MT_LDISKFS,
-        LDD_MT_SMFS,   
+        LDD_MT_SMFS,
         LDD_MT_REISERFS,
         LDD_MT_LDISKFS2,
         LDD_MT_LAST
 };
-       
+
 static inline char *mt_str(enum ldd_mount_type mt)
 {
         static char *mount_type_string[] = {
@@ -84,7 +84,7 @@ struct lustre_disk_data {
         __u32      ldd_feature_compat;  /* compatible feature flags */
         __u32      ldd_feature_rocompat;/* read-only compatible feature flags */
         __u32      ldd_feature_incompat;/* incompatible feature flags */
-        
+
         __u32      ldd_config_ver;      /* config rewrite count - not used */
         __u32      ldd_flags;           /* LDD_SV_TYPE */
         __u32      ldd_svindex;         /* server index (0001), must match 
@@ -93,7 +93,7 @@ struct lustre_disk_data {
         char       ldd_fsname[64];      /* filesystem this server is part of */
         char       ldd_svname[64];      /* this server's name (lustre-mdt0001)*/
         __u8       ldd_uuid[40];        /* server UUID (COMPAT_146) */
-   
+
 /*200*/ char       ldd_userdata[1024 - 200]; /* arbitrary user string */
 /*1024*/__u8       ldd_padding[4096 - 1024];
 /*4096*/char       ldd_mount_opts[4096]; /* target fs mount opts */
@@ -111,7 +111,7 @@ static inline int server_make_name(__u32 flags, __u16 index, char *fs,
 {
         if (flags & (LDD_F_SV_TYPE_MDT | LDD_F_SV_TYPE_OST)) {
                 sprintf(name, "%.8s-%s%04x", fs,
-                        (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",  
+                        (flags & LDD_F_SV_TYPE_MDT) ? "MDT" : "OST",
                         index);
         } else if (flags & LDD_F_SV_TYPE_MGS) {
                 sprintf(name, "MGS");
@@ -169,7 +169,6 @@ struct lustre_mount_data {
  * 2^n * CFS_PAGE_SIZE * 8 for the number of bits that fit an order-n allocation. */
 #define LR_MAX_CLIENTS (CFS_PAGE_SIZE * 8)
 
-                                                                                
 /* COMPAT_146 */
 #define OBD_COMPAT_OST          0x00000002 /* this is an OST (temporary) */
 #define OBD_COMPAT_MDT          0x00000004 /* this is an MDT (temporary) */
index 7446321..4fdbca3 100644 (file)
@@ -15,23 +15,11 @@ struct mdt_client_data;
 struct mds_idmap_table;
 struct mdt_idmap_table;
 
-struct mds_export_data {
-        struct list_head        med_open_head;
-        spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
-        struct mds_client_data *med_mcd;
-        __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 mdt_export_data {
         struct list_head        med_open_head;
         spinlock_t              med_open_lock; /* lock med_open_head, mfd_list*/
-        struct semaphore        med_mcd_lock; 
-        struct mdt_client_data *med_mcd;
+        struct semaphore        med_lcd_lock;
+        struct lsd_client_data *med_lcd;
         __u64                   med_ibits_known;
         loff_t                  med_lr_off;
         int                     med_lr_idx;
@@ -62,10 +50,9 @@ struct ec_export_data { /* echo client */
 };
 
 /* In-memory access to client data from OST struct */
-struct filter_client_data;
 struct filter_export_data {
         spinlock_t                 fed_lock;      /* protects fed_open_head */
-        struct filter_client_data *fed_fcd;
+        struct lsd_client_data    *fed_lcd;
         loff_t                     fed_lr_off;
         int                        fed_lr_idx;
         long                       fed_dirty;    /* in bytes */
@@ -129,16 +116,13 @@ struct obd_export {
         cfs_time_t                exp_flvr_expire[2];   /* seconds */
 
         union {
-                struct mds_export_data    eu_mds_data;
                 struct mdt_export_data    eu_mdt_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_mdt_data    u.eu_mdt_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
 
index 3182205..686addd 100644 (file)
@@ -4264,7 +4264,7 @@ static int mdt_obd_connect(const struct lu_env *env,
                            void *localdata)
 {
         struct mdt_thread_info *info;
-        struct mdt_client_data *mcd;
+        struct lsd_client_data *lcd;
         struct obd_export      *exp;
         struct mdt_device      *mdt;
         struct ptlrpc_request  *req;
@@ -4308,19 +4308,19 @@ static int mdt_obd_connect(const struct lu_env *env,
 
         rc = mdt_connect_internal(exp, mdt, data);
         if (rc == 0) {
-                OBD_ALLOC_PTR(mcd);
-                if (mcd != NULL) {
+                OBD_ALLOC_PTR(lcd);
+                if (lcd != NULL) {
                         struct mdt_thread_info *mti;
                         mti = lu_context_key_get(&env->le_ctx,
                                                  &mdt_thread_key);
                         LASSERT(mti != NULL);
                         mti->mti_exp = exp;
-                        memcpy(mcd->mcd_uuid, cluuid, sizeof mcd->mcd_uuid);
-                        exp->exp_mdt_data.med_mcd = mcd;
+                        memcpy(lcd->lcd_uuid, cluuid, sizeof lcd->lcd_uuid);
+                        exp->exp_mdt_data.med_lcd = lcd;
                         rc = mdt_client_new(env, mdt);
                         if (rc != 0) {
-                                OBD_FREE_PTR(mcd);
-                                exp->exp_mdt_data.med_mcd = NULL;
+                                OBD_FREE_PTR(lcd);
+                                exp->exp_mdt_data.med_lcd = NULL;
                         }
                 } else
                         rc = -ENOMEM;
index e2fd60c..b0d0cf3 100644 (file)
 #include <lustre_idmap.h>
 #include <lustre_eacl.h>
 
-
-/* Data stored per client in the last_rcvd file.  In le32 order. */
-struct mdt_client_data {
-        __u8  mcd_uuid[40];     /* client UUID */
-        __u64 mcd_last_transno; /* last completed transaction ID */
-        __u64 mcd_last_xid;     /* xid for the last transaction */
-        __u32 mcd_last_result;  /* result from last RPC */
-        __u32 mcd_last_data;    /* per-op data (disposition for open &c.) */
-        /* for MDS_CLOSE and MDS_DONE_WRITTING requests */
-        __u64 mcd_last_close_transno; /* last completed transaction ID */
-        __u64 mcd_last_close_xid;     /* xid for the last transaction */
-        __u32 mcd_last_close_result;  /* result from last RPC */
-        __u8 mcd_padding[LR_CLIENT_SIZE - 84];
-};
-
-static inline __u64 mcd_last_transno(struct mdt_client_data *mcd)
+static inline __u64 lcd_last_transno(struct lsd_client_data *lcd)
 {
-        return max(mcd->mcd_last_transno, mcd->mcd_last_close_transno);
+        return max(lcd->lcd_last_transno, lcd->lcd_last_close_transno);
 }
 
-static inline __u64 mcd_last_xid(struct mdt_client_data *mcd)
+static inline __u64 lcd_last_xid(struct lsd_client_data *lcd)
 {
-        return max(mcd->mcd_last_xid, mcd->mcd_last_close_xid);
+        return max(lcd->lcd_last_xid, lcd->lcd_last_close_xid);
 }
 
 /* check if request's xid is equal to last one or not*/
 static inline int req_xid_is_last(struct ptlrpc_request *req)
 {
-        struct mdt_client_data *mcd = req->rq_export->exp_mdt_data.med_mcd;
-        return (req->rq_xid == mcd->mcd_last_xid ||
-                req->rq_xid == mcd->mcd_last_close_xid);
+        struct lsd_client_data *lcd = req->rq_export->exp_mdt_data.med_lcd;
+        return (req->rq_xid == lcd->lcd_last_xid ||
+                req->rq_xid == lcd->lcd_last_close_xid);
 }
 
-/* copied from lr_server_data.
- * mds data stored at the head of last_rcvd file. In le32 order. */
-struct mdt_server_data {
-        __u8  msd_uuid[40];        /* server UUID */
-        __u64 msd_last_transno;    /* last completed transaction ID */
-        __u64 msd_mount_count;     /* incarnation number */
-        __u32 msd_feature_compat;  /* compatible feature flags */
-        __u32 msd_feature_rocompat;/* read-only compatible feature flags */
-        __u32 msd_feature_incompat;/* incompatible feature flags */
-        __u32 msd_server_size;     /* size of server data area */
-        __u32 msd_client_start;    /* start of per-client data area */
-        __u16 msd_client_size;     /* size of per-client data area */
-        //__u16 msd_subdir_count;    /* number of subdirectories for objects */
-        //__u64 msd_catalog_oid;     /* recovery catalog object id */
-        //__u32 msd_catalog_ogen;    /* recovery catalog inode generation */
-        //__u8  msd_peeruuid[40];    /* UUID of MDS associated with this OST */
-        //__u32 msd_ost_index;       /* index number of OST in LOV */
-        //__u32 msd_mdt_index;       /* index number of MDT in LMV */
-        __u8  msd_padding[LR_SERVER_SIZE - 78];
-};
-
 struct mdt_object;
 /* file data for open files on MDS */
 struct mdt_file_data {
@@ -174,7 +138,7 @@ struct mdt_device {
         __u64                      mdt_mount_count;
 
         /* last_rcvd data */
-        struct mdt_server_data     mdt_msd;
+        struct lr_server_data      mdt_lsd;
         spinlock_t                 mdt_client_bitmap_lock;
         unsigned long              mdt_client_bitmap[(LR_MAX_CLIENTS >> 3) / sizeof(long)];
 
@@ -381,8 +345,8 @@ struct mdt_thread_info {
         __u64                      mti_replayepoch;
 
         /* server and client data buffers */
-        struct mdt_server_data     mti_msd;
-        struct mdt_client_data     mti_mcd;
+        struct lr_server_data      mti_lsd;
+        struct lsd_client_data     mti_lcd;
         loff_t                     mti_off;
         struct txn_param           mti_txn_param;
         struct lu_buf              mti_buf;
@@ -677,7 +641,7 @@ static inline int mdt_check_resent(struct mdt_thread_info *info,
                         RETURN(1);
                 }
                 DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
-                          req->rq_export->exp_mdt_data.med_mcd->mcd_last_xid);
+                          req->rq_export->exp_mdt_data.med_lcd->lcd_last_xid);
         }
         RETURN(0);
 }
index cdda73e..0e4dfb6 100644 (file)
@@ -640,8 +640,8 @@ static int mdt_finish_open(struct mdt_thread_info *info,
         RETURN(rc);
 }
 
-extern void mdt_req_from_mcd(struct ptlrpc_request *req,
-                             struct mdt_client_data *mcd);
+extern void mdt_req_from_lcd(struct ptlrpc_request *req,
+                             struct lsd_client_data *lcd);
 
 void mdt_reconstruct_open(struct mdt_thread_info *info,
                           struct mdt_lock_handle *lhc)
@@ -651,7 +651,7 @@ void mdt_reconstruct_open(struct mdt_thread_info *info,
         struct req_capsule      *pill = info->mti_pill;
         struct ptlrpc_request   *req  = mdt_info_req(info);
         struct mdt_export_data  *med  = &req->rq_export->exp_mdt_data;
-        struct mdt_client_data  *mcd  = med->med_mcd;
+        struct lsd_client_data  *lcd  = med->med_lcd;
         struct md_attr          *ma   = &info->mti_attr;
         struct mdt_reint_record *rr   = &info->mti_rr;
         __u32                   flags = info->mti_spec.sp_cr_flags;
@@ -672,8 +672,8 @@ void mdt_reconstruct_open(struct mdt_thread_info *info,
         ma->ma_need = MA_INODE | MA_LOV;
         ma->ma_valid = 0;
 
-        mdt_req_from_mcd(req, med->med_mcd);
-        mdt_set_disposition(info, ldlm_rep, mcd->mcd_last_data);
+        mdt_req_from_lcd(req, med->med_lcd);
+        mdt_set_disposition(info, ldlm_rep, lcd->lcd_last_data);
 
         CERROR("This is reconstruct open: disp="LPX64", result=%d\n",
                 ldlm_rep->lock_policy_res1, req->rq_status);
index 3ca99be..131a4f2 100644 (file)
@@ -123,58 +123,58 @@ void mdt_trans_stop(const struct lu_env *env,
 }
 
 /* last_rcvd handling */
-static inline void msd_le_to_cpu(struct mdt_server_data *buf,
-                                 struct mdt_server_data *msd)
+static inline void lsd_le_to_cpu(struct lr_server_data *buf,
+                                 struct lr_server_data *lsd)
 {
-        memcpy(msd->msd_uuid, buf->msd_uuid, sizeof (msd->msd_uuid));
-        msd->msd_last_transno     = le64_to_cpu(buf->msd_last_transno);
-        msd->msd_mount_count      = le64_to_cpu(buf->msd_mount_count);
-        msd->msd_feature_compat   = le32_to_cpu(buf->msd_feature_compat);
-        msd->msd_feature_rocompat = le32_to_cpu(buf->msd_feature_rocompat);
-        msd->msd_feature_incompat = le32_to_cpu(buf->msd_feature_incompat);
-        msd->msd_server_size      = le32_to_cpu(buf->msd_server_size);
-        msd->msd_client_start     = le32_to_cpu(buf->msd_client_start);
-        msd->msd_client_size      = le16_to_cpu(buf->msd_client_size);
+        memcpy(lsd->lsd_uuid, buf->lsd_uuid, sizeof (lsd->lsd_uuid));
+        lsd->lsd_last_transno     = le64_to_cpu(buf->lsd_last_transno);
+        lsd->lsd_mount_count      = le64_to_cpu(buf->lsd_mount_count);
+        lsd->lsd_feature_compat   = le32_to_cpu(buf->lsd_feature_compat);
+        lsd->lsd_feature_rocompat = le32_to_cpu(buf->lsd_feature_rocompat);
+        lsd->lsd_feature_incompat = le32_to_cpu(buf->lsd_feature_incompat);
+        lsd->lsd_server_size      = le32_to_cpu(buf->lsd_server_size);
+        lsd->lsd_client_start     = le32_to_cpu(buf->lsd_client_start);
+        lsd->lsd_client_size      = le16_to_cpu(buf->lsd_client_size);
 }
 
-static inline void msd_cpu_to_le(struct mdt_server_data *msd,
-                                 struct mdt_server_data *buf)
+static inline void lsd_cpu_to_le(struct lr_server_data *lsd,
+                                 struct lr_server_data *buf)
 {
-        memcpy(buf->msd_uuid, msd->msd_uuid, sizeof (msd->msd_uuid));
-        buf->msd_last_transno     = cpu_to_le64(msd->msd_last_transno);
-        buf->msd_mount_count      = cpu_to_le64(msd->msd_mount_count);
-        buf->msd_feature_compat   = cpu_to_le32(msd->msd_feature_compat);
-        buf->msd_feature_rocompat = cpu_to_le32(msd->msd_feature_rocompat);
-        buf->msd_feature_incompat = cpu_to_le32(msd->msd_feature_incompat);
-        buf->msd_server_size      = cpu_to_le32(msd->msd_server_size);
-        buf->msd_client_start     = cpu_to_le32(msd->msd_client_start);
-        buf->msd_client_size      = cpu_to_le16(msd->msd_client_size);
+        memcpy(buf->lsd_uuid, lsd->lsd_uuid, sizeof (lsd->lsd_uuid));
+        buf->lsd_last_transno     = cpu_to_le64(lsd->lsd_last_transno);
+        buf->lsd_mount_count      = cpu_to_le64(lsd->lsd_mount_count);
+        buf->lsd_feature_compat   = cpu_to_le32(lsd->lsd_feature_compat);
+        buf->lsd_feature_rocompat = cpu_to_le32(lsd->lsd_feature_rocompat);
+        buf->lsd_feature_incompat = cpu_to_le32(lsd->lsd_feature_incompat);
+        buf->lsd_server_size      = cpu_to_le32(lsd->lsd_server_size);
+        buf->lsd_client_start     = cpu_to_le32(lsd->lsd_client_start);
+        buf->lsd_client_size      = cpu_to_le16(lsd->lsd_client_size);
 }
 
-static inline void mcd_le_to_cpu(struct mdt_client_data *buf,
-                                 struct mdt_client_data *mcd)
+static inline void lcd_le_to_cpu(struct lsd_client_data *buf,
+                                 struct lsd_client_data *lcd)
 {
-        memcpy(mcd->mcd_uuid, buf->mcd_uuid, sizeof (mcd->mcd_uuid));
-        mcd->mcd_last_transno       = le64_to_cpu(buf->mcd_last_transno);
-        mcd->mcd_last_xid           = le64_to_cpu(buf->mcd_last_xid);
-        mcd->mcd_last_result        = le32_to_cpu(buf->mcd_last_result);
-        mcd->mcd_last_data          = le32_to_cpu(buf->mcd_last_data);
-        mcd->mcd_last_close_transno = le64_to_cpu(buf->mcd_last_close_transno);
-        mcd->mcd_last_close_xid     = le64_to_cpu(buf->mcd_last_close_xid);
-        mcd->mcd_last_close_result  = le32_to_cpu(buf->mcd_last_close_result);
+        memcpy(lcd->lcd_uuid, buf->lcd_uuid, sizeof (lcd->lcd_uuid));
+        lcd->lcd_last_transno       = le64_to_cpu(buf->lcd_last_transno);
+        lcd->lcd_last_xid           = le64_to_cpu(buf->lcd_last_xid);
+        lcd->lcd_last_result        = le32_to_cpu(buf->lcd_last_result);
+        lcd->lcd_last_data          = le32_to_cpu(buf->lcd_last_data);
+        lcd->lcd_last_close_transno = le64_to_cpu(buf->lcd_last_close_transno);
+        lcd->lcd_last_close_xid     = le64_to_cpu(buf->lcd_last_close_xid);
+        lcd->lcd_last_close_result  = le32_to_cpu(buf->lcd_last_close_result);
 }
 
-static inline void mcd_cpu_to_le(struct mdt_client_data *mcd,
-                                 struct mdt_client_data *buf)
+static inline void lcd_cpu_to_le(struct lsd_client_data *lcd,
+                                 struct lsd_client_data *buf)
 {
-        memcpy(buf->mcd_uuid, mcd->mcd_uuid, sizeof (mcd->mcd_uuid));
-        buf->mcd_last_transno       = cpu_to_le64(mcd->mcd_last_transno);
-        buf->mcd_last_xid           = cpu_to_le64(mcd->mcd_last_xid);
-        buf->mcd_last_result        = cpu_to_le32(mcd->mcd_last_result);
-        buf->mcd_last_data          = cpu_to_le32(mcd->mcd_last_data);
-        buf->mcd_last_close_transno = cpu_to_le64(mcd->mcd_last_close_transno);
-        buf->mcd_last_close_xid     = cpu_to_le64(mcd->mcd_last_close_xid);
-        buf->mcd_last_close_result  = cpu_to_le32(mcd->mcd_last_close_result);
+        memcpy(buf->lcd_uuid, lcd->lcd_uuid, sizeof (lcd->lcd_uuid));
+        buf->lcd_last_transno       = cpu_to_le64(lcd->lcd_last_transno);
+        buf->lcd_last_xid           = cpu_to_le64(lcd->lcd_last_xid);
+        buf->lcd_last_result        = cpu_to_le32(lcd->lcd_last_result);
+        buf->lcd_last_data          = cpu_to_le32(lcd->lcd_last_data);
+        buf->lcd_last_close_transno = cpu_to_le64(lcd->lcd_last_close_transno);
+        buf->lcd_last_close_xid     = cpu_to_le64(lcd->lcd_last_close_xid);
+        buf->lcd_last_close_result  = cpu_to_le32(lcd->lcd_last_close_result);
 }
 
 static inline int mdt_last_rcvd_header_read(const struct lu_env *env,
@@ -187,16 +187,16 @@ static inline int mdt_last_rcvd_header_read(const struct lu_env *env,
 
         mti->mti_off = 0;
         rc = mdt_record_read(env, mdt->mdt_last_rcvd,
-                             mdt_buf(env, &mti->mti_msd, sizeof(mti->mti_msd)),
+                             mdt_buf(env, &mti->mti_lsd, sizeof(mti->mti_lsd)),
                              &mti->mti_off);
         if (rc == 0)
-                msd_le_to_cpu(&mti->mti_msd, &mdt->mdt_msd);
+                lsd_le_to_cpu(&mti->mti_lsd, &mdt->mdt_lsd);
 
         CDEBUG(D_INFO, "read last_rcvd header rc = %d:\n"
                        "uuid = %s\n"
                        "last_transno = "LPU64"\n",
-                        rc, mdt->mdt_msd.msd_uuid,
-                        mdt->mdt_msd.msd_last_transno);
+                        rc, mdt->mdt_lsd.lsd_uuid,
+                        mdt->mdt_lsd.lsd_last_transno);
         return rc;
 }
 
@@ -215,37 +215,37 @@ static inline int mdt_last_rcvd_header_write(const struct lu_env *env,
                 RETURN(PTR_ERR(th));
 
         mti->mti_off = 0;        
-        msd_cpu_to_le(&mdt->mdt_msd, &mti->mti_msd);
+        lsd_cpu_to_le(&mdt->mdt_lsd, &mti->mti_lsd);
 
         rc = mdt_record_write(env, mdt->mdt_last_rcvd,
-                              mdt_buf_const(env, &mti->mti_msd, sizeof(mti->mti_msd)),
+                              mdt_buf_const(env, &mti->mti_lsd, sizeof(mti->mti_lsd)),
                               &mti->mti_off, th);
 
         mdt_trans_stop(env, mdt, th);
 
         CDEBUG(D_INFO, "write last_rcvd header rc = %d:\n"
                "uuid = %s\nlast_transno = "LPU64"\n",
-               rc, mdt->mdt_msd.msd_uuid, mdt->mdt_msd.msd_last_transno);
+               rc, mdt->mdt_lsd.lsd_uuid, mdt->mdt_lsd.lsd_last_transno);
         
         RETURN(rc);
 }
 
 static int mdt_last_rcvd_read(const struct lu_env *env,
                               struct mdt_device *mdt,
-                              struct mdt_client_data *mcd, loff_t *off)
+                              struct lsd_client_data *lcd, loff_t *off)
 {
         struct mdt_thread_info *mti;
-        struct mdt_client_data *tmp;
+        struct lsd_client_data *tmp;
         int rc;
 
         mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-        tmp = &mti->mti_mcd;
+        tmp = &mti->mti_lcd;
         rc = mdt_record_read(env, mdt->mdt_last_rcvd,
                              mdt_buf(env, tmp, sizeof(*tmp)), off);
         if (rc == 0)
-                mcd_le_to_cpu(tmp, mcd);
+                lcd_le_to_cpu(tmp, lcd);
 
-        CDEBUG(D_INFO, "read mcd @%d rc = %d:\n"
+        CDEBUG(D_INFO, "read lcd @%d rc = %d:\n"
                        "uuid = %s\n"
                        "last_transno = "LPU64"\n"
                        "last_xid = "LPU64"\n"
@@ -256,36 +256,36 @@ static int mdt_last_rcvd_read(const struct lu_env *env,
                        "last_close_result = %d\n",
                         (int)*off - sizeof(*tmp),
                         rc,
-                        mcd->mcd_uuid,
-                        mcd->mcd_last_transno,
-                        mcd->mcd_last_xid,
-                        mcd->mcd_last_result,
-                        mcd->mcd_last_data,
-                        mcd->mcd_last_close_transno,
-                        mcd->mcd_last_close_xid,
-                        mcd->mcd_last_close_result);
+                        lcd->lcd_uuid,
+                        lcd->lcd_last_transno,
+                        lcd->lcd_last_xid,
+                        lcd->lcd_last_result,
+                        lcd->lcd_last_data,
+                        lcd->lcd_last_close_transno,
+                        lcd->lcd_last_close_xid,
+                        lcd->lcd_last_close_result);
         return rc;
 }
 
 static int mdt_last_rcvd_write(const struct lu_env *env,
                                struct mdt_device *mdt,
-                               struct mdt_client_data *mcd,
+                               struct lsd_client_data *lcd,
                                loff_t *off, struct thandle *th)
 {
         struct mdt_thread_info *mti;
-        struct mdt_client_data *tmp;
+        struct lsd_client_data *tmp;
         int rc;
 
         LASSERT(th != NULL);
         mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
-        tmp = &mti->mti_mcd;
+        tmp = &mti->mti_lcd;
 
-        mcd_cpu_to_le(mcd, tmp);
+        lcd_cpu_to_le(lcd, tmp);
 
         rc = mdt_record_write(env, mdt->mdt_last_rcvd,
                               mdt_buf_const(env, tmp, sizeof(*tmp)), off, th);
 
-        CDEBUG(D_INFO, "write mcd @%d rc = %d:\n"
+        CDEBUG(D_INFO, "write lcd @%d rc = %d:\n"
                        "uuid = %s\n"
                        "last_transno = "LPU64"\n"
                        "last_xid = "LPU64"\n"
@@ -296,14 +296,14 @@ static int mdt_last_rcvd_write(const struct lu_env *env,
                        "last_close_result = %d\n",
                         (int)*off - sizeof(*tmp),
                         rc,
-                        mcd->mcd_uuid,
-                        mcd->mcd_last_transno,
-                        mcd->mcd_last_xid,
-                        mcd->mcd_last_result,
-                        mcd->mcd_last_data,
-                        mcd->mcd_last_close_transno,
-                        mcd->mcd_last_close_xid,
-                        mcd->mcd_last_close_result);
+                        lcd->lcd_uuid,
+                        lcd->lcd_last_transno,
+                        lcd->lcd_last_xid,
+                        lcd->lcd_last_result,
+                        lcd->lcd_last_data,
+                        lcd->lcd_last_close_transno,
+                        lcd->lcd_last_close_xid,
+                        lcd->lcd_last_close_result);
         return rc;
 }
 
@@ -312,8 +312,8 @@ static int mdt_clients_data_init(const struct lu_env *env,
                                  struct mdt_device *mdt,
                                  unsigned long last_size)
 {
-        struct mdt_server_data *msd = &mdt->mdt_msd;
-        struct mdt_client_data *mcd = NULL;
+        struct lr_server_data  *lsd = &mdt->mdt_lsd;
+        struct lsd_client_data *lcd = NULL;
         struct obd_device      *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
         loff_t off;
         int cl_idx;
@@ -324,21 +324,21 @@ static int mdt_clients_data_init(const struct lu_env *env,
          * the header.  If we find clients with higher last_transno values
          * then those clients may need recovery done. */
         LASSERT(atomic_read(&obd->obd_req_replay_clients) == 0);
-        for (cl_idx = 0, off = msd->msd_client_start;
+        for (cl_idx = 0, off = lsd->lsd_client_start;
              off < last_size; cl_idx++) {
                 __u64 last_transno;
                 struct obd_export *exp;
 
-                if (!mcd) {
-                        OBD_ALLOC_PTR(mcd);
-                        if (!mcd)
+                if (!lcd) {
+                        OBD_ALLOC_PTR(lcd);
+                        if (!lcd)
                                 RETURN(-ENOMEM);
                 }
 
-                off = msd->msd_client_start +
-                        cl_idx * msd->msd_client_size;
+                off = lsd->lsd_client_start +
+                        cl_idx * lsd->lsd_client_size;
 
-                rc = mdt_last_rcvd_read(env, mdt, mcd, &off);
+                rc = mdt_last_rcvd_read(env, mdt, lcd, &off);
                 if (rc) {
                         CERROR("error reading MDS %s idx %d, off %llu: rc %d\n",
                                LAST_RCVD, cl_idx, off, rc);
@@ -346,28 +346,28 @@ static int mdt_clients_data_init(const struct lu_env *env,
                         break; /* read error shouldn't cause startup to fail */
                 }
 
-                if (mcd->mcd_uuid[0] == '\0') {
+                if (lcd->lcd_uuid[0] == '\0') {
                         CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
                                cl_idx);
                         continue;
                 }
 
-                last_transno = mcd_last_transno(mcd);
+                last_transno = lcd_last_transno(lcd);
 
                 /* These exports are cleaned up by mdt_obd_disconnect(), so
                  * they need to be set up like real exports as
                  * mdt_obd_connect() does.
                  */
                 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
-                       " srv lr: "LPU64" lx: "LPU64"\n", mcd->mcd_uuid, cl_idx,
-                       last_transno, msd->msd_last_transno,
-                       mcd_last_xid(mcd));
+                       " srv lr: "LPU64" lx: "LPU64"\n", lcd->lcd_uuid, cl_idx,
+                       last_transno, lsd->lsd_last_transno,
+                       lcd_last_xid(lcd));
 
-                exp = class_new_export(obd, (struct obd_uuid *)mcd->mcd_uuid);
+                exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
                 if (IS_ERR(exp)) {
                         if (PTR_ERR(exp) == -EALREADY) {
                                 /* export already exists, zero out this one */
-                                mcd->mcd_uuid[0] = '\0'; 
+                                lcd->lcd_uuid[0] = '\0'; 
                         } else
                                 GOTO(err_client, rc = PTR_ERR(exp));
                 } else {
@@ -375,11 +375,11 @@ static int mdt_clients_data_init(const struct lu_env *env,
                         mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
                         LASSERT(mti != NULL);
                         mti->mti_exp = exp;
-                        exp->exp_mdt_data.med_mcd = mcd;
+                        exp->exp_mdt_data.med_lcd = lcd;
                         rc = mdt_client_add(env, mdt, cl_idx);
                         /* can't fail existing */
                         LASSERTF(rc == 0, "rc = %d\n", rc); 
-                        mcd = NULL;
+                        lcd = NULL;
                         spin_lock(&exp->exp_lock);
                         exp->exp_connecting = 0;
                         exp->exp_in_recovery = 0;
@@ -398,16 +398,16 @@ static int mdt_clients_data_init(const struct lu_env *env,
         }
 
 err_client:
-        if (mcd)
-                OBD_FREE_PTR(mcd);
+        if (lcd)
+                OBD_FREE_PTR(lcd);
         RETURN(rc);
 }
 
 static int mdt_server_data_init(const struct lu_env *env,
                                 struct mdt_device *mdt)
 {
-        struct mdt_server_data *msd = &mdt->mdt_msd;
-        struct mdt_client_data *mcd = NULL;
+        struct lr_server_data  *lsd = &mdt->mdt_lsd;
+        struct lsd_client_data *lcd = NULL;
         struct obd_device      *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
         struct mdt_thread_info *mti;
         struct dt_object       *obj;
@@ -418,10 +418,10 @@ static int mdt_server_data_init(const struct lu_env *env,
         ENTRY;
 
         /* ensure padding in the struct is the correct size */
-        CLASSERT(offsetof(struct mdt_server_data, msd_padding) +
-                sizeof(msd->msd_padding) == LR_SERVER_SIZE);
-        CLASSERT(offsetof(struct mdt_client_data, mcd_padding) +
-                sizeof(mcd->mcd_padding) == LR_CLIENT_SIZE);
+        CLASSERT(offsetof(struct lr_server_data, lsd_padding) +
+                sizeof(lsd->lsd_padding) == LR_SERVER_SIZE);
+        CLASSERT(offsetof(struct lsd_client_data, lcd_padding) +
+                sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
 
         mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key);
         LASSERT(mti != NULL);
@@ -437,15 +437,15 @@ static int mdt_server_data_init(const struct lu_env *env,
         if (last_rcvd_size == 0) {
                 LCONSOLE_WARN("%s: new disk, initializing\n", obd->obd_name);
 
-                memcpy(msd->msd_uuid, obd->obd_uuid.uuid,
-                       sizeof(msd->msd_uuid));
-                msd->msd_last_transno = 0;
-                msd->msd_mount_count = 0;
-                msd->msd_server_size = LR_SERVER_SIZE;
-                msd->msd_client_start = LR_CLIENT_START;
-                msd->msd_client_size = LR_CLIENT_SIZE;
-                msd->msd_feature_rocompat = OBD_ROCOMPAT_LOVOBJID;
-                msd->msd_feature_incompat = OBD_INCOMPAT_MDT |
+                memcpy(lsd->lsd_uuid, obd->obd_uuid.uuid,
+                       sizeof(lsd->lsd_uuid));
+                lsd->lsd_last_transno = 0;
+                lsd->lsd_mount_count = 0;
+                lsd->lsd_server_size = LR_SERVER_SIZE;
+                lsd->lsd_client_start = LR_CLIENT_START;
+                lsd->lsd_client_size = LR_CLIENT_SIZE;
+                lsd->lsd_feature_rocompat = OBD_ROCOMPAT_LOVOBJID;
+                lsd->lsd_feature_incompat = OBD_INCOMPAT_MDT |
                                                        OBD_INCOMPAT_COMMON_LR;
         } else {
                 LCONSOLE_WARN("%s: used disk, loading\n", obd->obd_name);
@@ -454,20 +454,20 @@ static int mdt_server_data_init(const struct lu_env *env,
                         CERROR("error reading MDS %s: rc %d\n", LAST_RCVD, rc);
                         GOTO(out, rc);
                 }
-                if (strcmp(msd->msd_uuid, obd->obd_uuid.uuid) != 0) {
+                if (strcmp(lsd->lsd_uuid, obd->obd_uuid.uuid) != 0) {
                         LCONSOLE_ERROR_MSG(0x157, "Trying to start OBD %s using"
                                            "the wrong disk %s. Were the /dev/ "
                                            "assignments rearranged?\n",
-                                           obd->obd_uuid.uuid, msd->msd_uuid);
+                                           obd->obd_uuid.uuid, lsd->lsd_uuid);
                         GOTO(out, rc = -EINVAL);
                 }
         }
-        mount_count = msd->msd_mount_count;
+        mount_count = lsd->lsd_mount_count;
 
-        msd->msd_feature_compat = OBD_COMPAT_MDT;
+        lsd->lsd_feature_compat = OBD_COMPAT_MDT;
 
         spin_lock(&mdt->mdt_transno_lock);
-        mdt->mdt_last_transno = msd->msd_last_transno;
+        mdt->mdt_last_transno = lsd->lsd_last_transno;
         spin_unlock(&mdt->mdt_transno_lock);
 
         CDEBUG(D_INODE, "========BEGIN DUMPING LAST_RCVD========\n");
@@ -476,21 +476,21 @@ static int mdt_server_data_init(const struct lu_env *env,
         CDEBUG(D_INODE, "%s: server mount_count: "LPU64"\n",
                obd->obd_name, mount_count + 1);
         CDEBUG(D_INODE, "%s: server data size: %u\n",
-               obd->obd_name, msd->msd_server_size);
+               obd->obd_name, lsd->lsd_server_size);
         CDEBUG(D_INODE, "%s: per-client data start: %u\n",
-               obd->obd_name, msd->msd_client_start);
+               obd->obd_name, lsd->lsd_client_start);
         CDEBUG(D_INODE, "%s: per-client data size: %u\n",
-               obd->obd_name, msd->msd_client_size);
+               obd->obd_name, lsd->lsd_client_size);
         CDEBUG(D_INODE, "%s: last_rcvd size: %lu\n",
                obd->obd_name, last_rcvd_size);
         CDEBUG(D_INODE, "%s: last_rcvd clients: %lu\n", obd->obd_name,
-               last_rcvd_size <= msd->msd_client_start ? 0 :
-               (last_rcvd_size - msd->msd_client_start) /
-                msd->msd_client_size);
+               last_rcvd_size <= lsd->lsd_client_start ? 0 :
+               (last_rcvd_size - lsd->lsd_client_start) /
+                lsd->lsd_client_size);
         CDEBUG(D_INODE, "========END DUMPING LAST_RCVD========\n");
 
-        if (!msd->msd_server_size || !msd->msd_client_start ||
-            !msd->msd_client_size) {
+        if (!lsd->lsd_server_size || !lsd->lsd_client_start ||
+            !lsd->lsd_client_size) {
                 CERROR("Bad last_rcvd contents!\n");
                 GOTO(out, rc = -EINVAL);
         }
@@ -506,7 +506,7 @@ static int mdt_server_data_init(const struct lu_env *env,
         spin_unlock(&mdt->mdt_transno_lock);
 
         mdt->mdt_mount_count++;
-        msd->msd_mount_count = mdt->mdt_mount_count;
+        lsd->lsd_mount_count = mdt->mdt_mount_count;
 
         /* save it, so mount count and last_transno is current */
         rc = mdt_server_data_update(env, mdt);
@@ -531,7 +531,7 @@ static int mdt_server_data_update(const struct lu_env *env,
                mdt->mdt_mount_count, mdt->mdt_last_transno);
 
         spin_lock(&mdt->mdt_transno_lock);
-        mdt->mdt_msd.msd_last_transno = mdt->mdt_last_transno;
+        mdt->mdt_lsd.lsd_last_transno = mdt->mdt_last_transno;
         spin_unlock(&mdt->mdt_transno_lock);
 
         /*
@@ -547,7 +547,7 @@ void mdt_cb_new_client(const struct mdt_device *mdt, __u64 transno,
                                   void *data, int err) 
 {
         struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
-        
+
         target_client_add_cb(obd, transno, data, err);
 }
 
@@ -556,8 +556,8 @@ int mdt_client_new(const struct lu_env *env, struct mdt_device *mdt)
         unsigned long *bitmap = mdt->mdt_client_bitmap;
         struct mdt_thread_info *mti;
         struct mdt_export_data *med;
-        struct mdt_client_data *mcd;
-        struct mdt_server_data *msd = &mdt->mdt_msd;
+        struct lsd_client_data *lcd;
+        struct lr_server_data  *lsd = &mdt->mdt_lsd;
         struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
         struct thandle *th;
         loff_t off;
@@ -569,10 +569,10 @@ int mdt_client_new(const struct lu_env *env, struct mdt_device *mdt)
         LASSERT(mti != NULL);
 
         med = &mti->mti_exp->exp_mdt_data;
-        mcd = med->med_mcd;
+        lcd = med->med_lcd;
 
         LASSERT(bitmap != NULL);
-        if (!strcmp(med->med_mcd->mcd_uuid, obd->obd_uuid.uuid))
+        if (!strcmp(med->med_lcd->lcd_uuid, obd->obd_uuid.uuid))
                 RETURN(0);
 
         /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
@@ -591,12 +591,12 @@ int mdt_client_new(const struct lu_env *env, struct mdt_device *mdt)
         spin_unlock(&mdt->mdt_client_bitmap_lock);
 
         CDEBUG(D_INFO, "client at idx %d with UUID '%s' added\n",
-               cl_idx, med->med_mcd->mcd_uuid);
+               cl_idx, med->med_lcd->lcd_uuid);
 
         med->med_lr_idx = cl_idx;
-        med->med_lr_off = msd->msd_client_start +
-                          (cl_idx * msd->msd_client_size);
-        init_mutex(&med->med_mcd_lock);
+        med->med_lr_off = lsd->lsd_client_start +
+                          (cl_idx * lsd->lsd_client_size);
+        init_mutex(&med->med_lcd_lock);
 
         LASSERTF(med->med_lr_off > 0, "med_lr_off = %llu\n", med->med_lr_off);
         /* write new client data */
@@ -612,9 +612,9 @@ int mdt_client_new(const struct lu_env *env, struct mdt_device *mdt)
         mti->mti_exp->exp_need_sync = 1;
         spin_unlock(&mti->mti_exp->exp_lock);
 
-        rc = mdt_last_rcvd_write(env, mdt, mcd, &off, th);
-        CDEBUG(D_INFO, "wrote client mcd at idx %u off %llu (len %u)\n",
-               cl_idx, med->med_lr_off, sizeof(*mcd));
+        rc = mdt_last_rcvd_write(env, mdt, lcd, &off, th);
+        CDEBUG(D_INFO, "wrote client lcd at idx %u off %llu (len %u)\n",
+               cl_idx, med->med_lr_off, sizeof(*lcd));
         mdt_trans_stop(env, mdt, th);
 
         RETURN(rc);
@@ -635,7 +635,7 @@ int mdt_client_add(const struct lu_env *env,
         struct mdt_export_data *med;
         unsigned long *bitmap = mdt->mdt_client_bitmap;
         struct obd_device *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
-        struct mdt_server_data *msd = &mdt->mdt_msd;
+        struct lr_server_data *lsd = &mdt->mdt_lsd;
         int rc = 0;
         ENTRY;
 
@@ -647,7 +647,7 @@ int mdt_client_add(const struct lu_env *env,
         LASSERT(bitmap != NULL);
         LASSERTF(cl_idx >= 0, "%d\n", cl_idx);
 
-        if (!strcmp(med->med_mcd->mcd_uuid, obd->obd_uuid.uuid))
+        if (!strcmp(med->med_lcd->lcd_uuid, obd->obd_uuid.uuid))
                 RETURN(0);
 
         spin_lock(&mdt->mdt_client_bitmap_lock);
@@ -659,12 +659,12 @@ int mdt_client_add(const struct lu_env *env,
         spin_unlock(&mdt->mdt_client_bitmap_lock);
 
         CDEBUG(D_INFO, "client at idx %d with UUID '%s' added\n",
-               cl_idx, med->med_mcd->mcd_uuid);
+               cl_idx, med->med_lcd->lcd_uuid);
 
         med->med_lr_idx = cl_idx;
-        med->med_lr_off = msd->msd_client_start +
-                          (cl_idx * msd->msd_client_size);
-        init_mutex(&med->med_mcd_lock);
+        med->med_lr_off = lsd->lsd_client_start +
+                          (cl_idx * lsd->lsd_client_size);
+        init_mutex(&med->med_lcd_lock);
 
         LASSERTF(med->med_lr_off > 0, "med_lr_off = %llu\n", med->med_lr_off);
 
@@ -675,7 +675,7 @@ int mdt_client_del(const struct lu_env *env, struct mdt_device *mdt)
 {
         struct mdt_thread_info *mti;
         struct mdt_export_data *med;
-        struct mdt_client_data *mcd;
+        struct lsd_client_data *lcd;
         struct obd_device      *obd = mdt->mdt_md_dev.md_lu_dev.ld_obd;
         struct thandle *th;
         loff_t off;
@@ -686,12 +686,12 @@ int mdt_client_del(const struct lu_env *env, struct mdt_device *mdt)
         LASSERT(mti != NULL);
 
         med = &mti->mti_exp->exp_mdt_data;
-        mcd = med->med_mcd;
-        if (!mcd)
+        lcd = med->med_lcd;
+        if (!lcd)
                 RETURN(0);
 
-        /* XXX: If mcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
-        if (!strcmp(med->med_mcd->mcd_uuid, obd->obd_uuid.uuid))
+        /* XXX: If lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
+        if (!strcmp(med->med_lcd->lcd_uuid, obd->obd_uuid.uuid))
                 GOTO(free, 0);
 
         CDEBUG(D_INFO, "freeing client at idx %u, offset %lld\n",
@@ -728,11 +728,11 @@ int mdt_client_del(const struct lu_env *env, struct mdt_device *mdt)
                 if (IS_ERR(th))
                         GOTO(free, rc = PTR_ERR(th));
 
-                mutex_down(&med->med_mcd_lock);
-                memset(mcd, 0, sizeof *mcd);
+                mutex_down(&med->med_lcd_lock);
+                memset(lcd, 0, sizeof *lcd);
 
-                rc = mdt_last_rcvd_write(env, mdt, mcd, &off, th);
-                mutex_up(&med->med_mcd_lock);
+                rc = mdt_last_rcvd_write(env, mdt, lcd, &off, th);
+                mutex_up(&med->med_lcd_lock);
                 mdt_trans_stop(env, mdt, th);
         }
 
@@ -742,7 +742,7 @@ int mdt_client_del(const struct lu_env *env, struct mdt_device *mdt)
         spin_lock(&mdt->mdt_client_bitmap_lock);
         clear_bit(med->med_lr_idx, mdt->mdt_client_bitmap);
         spin_unlock(&mdt->mdt_client_bitmap_lock);
-        
+
         /*
          * Make sure the server's last_transno is up to date. Do this after the
          * client is freed so we know all the client's transactions have been
@@ -751,8 +751,8 @@ int mdt_client_del(const struct lu_env *env, struct mdt_device *mdt)
         mdt_server_data_update(env, mdt);
         EXIT;
 free:
-        OBD_FREE_PTR(mcd);
-        med->med_mcd = NULL;
+        OBD_FREE_PTR(lcd);
+        med->med_lcd = NULL;
         return 0;
 }
 
@@ -765,7 +765,7 @@ static int mdt_last_rcvd_update(struct mdt_thread_info *mti,
         struct mdt_device *mdt = mti->mti_mdt;
         struct ptlrpc_request *req = mdt_info_req(mti);
         struct mdt_export_data *med;
-        struct mdt_client_data *mcd;
+        struct lsd_client_data *lcd;
         loff_t off;
         int err;
         __s32 rc = th->th_result;
@@ -777,7 +777,7 @@ static int mdt_last_rcvd_update(struct mdt_thread_info *mti,
         LASSERT(mdt);
         med = &req->rq_export->exp_mdt_data;
         LASSERT(med);
-        mcd = med->med_mcd;
+        lcd = med->med_lcd;
         /* if the export has already been failed, we have no last_rcvd slot */
         if (req->rq_export->exp_failed) {
                 CWARN("commit transaction for disconnected client %s: rc %d\n",
@@ -788,25 +788,25 @@ static int mdt_last_rcvd_update(struct mdt_thread_info *mti,
         }
 
         off = med->med_lr_off;
-        mutex_down(&med->med_mcd_lock);
+        mutex_down(&med->med_lcd_lock);
         if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
             lustre_msg_get_opc(req->rq_reqmsg) == MDS_DONE_WRITING) {
-                transno_p = &mcd->mcd_last_close_transno;
-                mcd->mcd_last_close_xid = req->rq_xid;
-                mcd->mcd_last_close_result = rc;
+                transno_p = &lcd->lcd_last_close_transno;
+                lcd->lcd_last_close_xid = req->rq_xid;
+                lcd->lcd_last_close_result = rc;
         } else {
-                transno_p = &mcd->mcd_last_transno;
-                mcd->mcd_last_xid = req->rq_xid;
-                mcd->mcd_last_result = rc;
+                transno_p = &lcd->lcd_last_transno;
+                lcd->lcd_last_xid = req->rq_xid;
+                lcd->lcd_last_result = rc;
                 /*XXX: save intent_disposition in mdt_thread_info?
                  * also there is bug - intent_dispostion is __u64,
                  * see struct ldlm_reply->lock_policy_res1; */
-                 mcd->mcd_last_data = mti->mti_opdata;
+                lcd->lcd_last_data = mti->mti_opdata;
         }
 
         /*
-         * When we store zero transno in mcd we can lost last transno value
-         * because mcd contains 0, but msd is not yet written
+         * When we store zero transno in lcd we can lost last transno value
+         * because lcd contains 0, but lsd is not yet written
          * The server data should be updated also if the latest 
          * transno is rewritten by zero. See the bug 11125 for details.
          */
@@ -820,9 +820,9 @@ static int mdt_last_rcvd_update(struct mdt_thread_info *mti,
                 CERROR("client idx %d has offset %lld\n", med->med_lr_idx, off);
                 err = -EINVAL;
         } else {
-                err = mdt_last_rcvd_write(mti->mti_env, mdt, mcd, &off, th);
+                err = mdt_last_rcvd_write(mti->mti_env, mdt, lcd, &off, th);
         }
-        mutex_up(&med->med_mcd_lock);
+        mutex_up(&med->med_lcd_lock);
         RETURN(err);
 }
 
@@ -889,7 +889,7 @@ static int mdt_txn_stop_cb(const struct lu_env *env,
         req->rq_transno = mti->mti_transno;
         lustre_msg_set_transno(req->rq_repmsg, mti->mti_transno);
         lustre_msg_set_last_xid(req->rq_repmsg,
-                         mcd_last_xid(req->rq_export->exp_mdt_data.med_mcd));
+                         lcd_last_xid(req->rq_export->exp_mdt_data.med_lcd));
         /* save transno for the commit callback */
         txi->txi_transno = mti->mti_transno;
         spin_unlock(&mdt->mdt_transno_lock);
@@ -1050,21 +1050,21 @@ static void mdt_steal_ack_locks(struct ptlrpc_request *req)
         spin_unlock(&exp->exp_lock);
 }
 
-void mdt_req_from_mcd(struct ptlrpc_request *req,
-                      struct mdt_client_data *mcd)
+void mdt_req_from_lcd(struct ptlrpc_request *req,
+                      struct lsd_client_data *lcd)
 {
         DEBUG_REQ(D_HA, req, "restoring transno "LPD64"/status %d",
-                  mcd->mcd_last_transno, mcd->mcd_last_result);
+                  lcd->lcd_last_transno, lcd->lcd_last_result);
 
         if (lustre_msg_get_opc(req->rq_reqmsg) == MDS_CLOSE ||
             lustre_msg_get_opc(req->rq_repmsg) == MDS_DONE_WRITING) {
-                req->rq_transno = mcd->mcd_last_close_transno;
-                req->rq_status = mcd->mcd_last_close_result;
+                req->rq_transno = lcd->lcd_last_close_transno;
+                req->rq_status = lcd->lcd_last_close_result;
                 lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
                 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
         } else {
-                req->rq_transno = mcd->mcd_last_transno;
-                req->rq_status = mcd->mcd_last_result;
+                req->rq_transno = lcd->lcd_last_transno;
+                req->rq_status = lcd->lcd_last_result;
                 lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
                 lustre_msg_set_status(req->rq_repmsg, req->rq_status);
         }
@@ -1077,7 +1077,7 @@ void mdt_reconstruct_generic(struct mdt_thread_info *mti,
         struct ptlrpc_request *req = mdt_info_req(mti);
         struct mdt_export_data *med = &req->rq_export->exp_mdt_data;
 
-        return mdt_req_from_mcd(req, med->med_mcd);
+        return mdt_req_from_lcd(req, med->med_lcd);
 }
 
 static void mdt_reconstruct_create(struct mdt_thread_info *mti,
@@ -1091,7 +1091,7 @@ static void mdt_reconstruct_create(struct mdt_thread_info *mti,
         struct mdt_body *body;
         int rc;
 
-        mdt_req_from_mcd(req, med->med_mcd);
+        mdt_req_from_lcd(req, med->med_lcd);
         if (req->rq_status)
                 return;
 
@@ -1130,7 +1130,7 @@ static void mdt_reconstruct_setattr(struct mdt_thread_info *mti,
         struct mdt_object *obj;
         struct mdt_body *body;
 
-        mdt_req_from_mcd(req, med->med_mcd);
+        mdt_req_from_lcd(req, med->med_lcd);
         if (req->rq_status)
                 return;
 
index 87b6614..addaa02 100644 (file)
@@ -80,7 +80,7 @@ int filter_finish_transno(struct obd_export *exp, struct obd_trans_info *oti,
 {
         struct filter_obd *filter = &exp->exp_obd->u.filter;
         struct filter_export_data *fed = &exp->exp_filter_data;
-        struct filter_client_data *fcd = fed->fed_fcd;
+        struct lsd_client_data *lcd = fed->fed_lcd;
         __u64 last_rcvd;
         loff_t off;
         int err, log_pri = D_RPCTRACE;
@@ -107,10 +107,10 @@ int filter_finish_transno(struct obd_export *exp, struct obd_trans_info *oti,
                                 cpu_to_le64(last_rcvd);
                 spin_unlock(&filter->fo_translock);
         }
-        fcd->fcd_last_rcvd = cpu_to_le64(last_rcvd);
+        lcd->lcd_last_transno = cpu_to_le64(last_rcvd);
 
         /* could get xid from oti, if it's ever needed */
-        fcd->fcd_last_xid = 0;
+        lcd->lcd_last_xid = 0;
 
         off = fed->fed_lr_off;
         if (off <= 0) {
@@ -126,7 +126,7 @@ int filter_finish_transno(struct obd_export *exp, struct obd_trans_info *oti,
                                                            NULL);
 
                 err = fsfilt_write_record(exp->exp_obd, filter->fo_rcvd_filp,
-                                          fcd, sizeof(*fcd), &off,
+                                          lcd, sizeof(*lcd), &off,
                                           force_sync | exp->exp_need_sync);
                 if (force_sync)
                         filter_commit_cb(exp->exp_obd, last_rcvd, NULL, err);
@@ -138,7 +138,7 @@ int filter_finish_transno(struct obd_export *exp, struct obd_trans_info *oti,
         }
 
         CDEBUG(log_pri, "wrote trans "LPU64" for client %s at #%d: err = %d\n",
-               last_rcvd, fcd->fcd_uuid, fed->fed_lr_idx, err);
+               last_rcvd, lcd->lcd_uuid, fed->fed_lr_idx, err);
 
         RETURN(rc);
 }
@@ -246,7 +246,7 @@ static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
         LASSERTF(cl_idx > -2, "%d\n", cl_idx);
 
         /* Self-export */
-        if (strcmp(fed->fed_fcd->fcd_uuid, obd->obd_uuid.uuid) == 0)
+        if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid) == 0)
                 RETURN(0);
 
         /* the bitmap operations can handle cl_idx > sizeof(long) * 8, so
@@ -279,7 +279,7 @@ static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
         LASSERTF(fed->fed_lr_off > 0, "fed_lr_off = %llu\n", fed->fed_lr_off);
 
         CDEBUG(D_INFO, "client at index %d (%llu) with UUID '%s' added\n",
-               fed->fed_lr_idx, fed->fed_lr_off, fed->fed_fcd->fcd_uuid);
+               fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
 
         if (new_client) {
                 struct lvfs_run_ctxt saved;
@@ -287,8 +287,8 @@ static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
                 int rc;
                 void *handle;
 
-                CDEBUG(D_INFO, "writing client fcd at idx %u (%llu) (len %u)\n",
-                       fed->fed_lr_idx,off,(unsigned int)sizeof(*fed->fed_fcd));
+                CDEBUG(D_INFO, "writing client lcd at idx %u (%llu) (len %u)\n",
+                       fed->fed_lr_idx,off,(unsigned int)sizeof(*fed->fed_lcd));
 
                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
                 /* Transaction needed to fix bug 1403 */
@@ -307,8 +307,8 @@ static int filter_client_add(struct obd_device *obd, struct obd_export *exp,
                                 spin_unlock(&exp->exp_lock);
                         }
                         rc = fsfilt_write_record(obd, filter->fo_rcvd_filp,
-                                                 fed->fed_fcd,
-                                                 sizeof(*fed->fed_fcd),
+                                                 fed->fed_lcd,
+                                                 sizeof(*fed->fed_lcd),
                                                  &off, rc /* sync if no cb */);
                         fsfilt_commit(obd,
                                       filter->fo_rcvd_filp->f_dentry->d_inode,
@@ -330,21 +330,21 @@ static int filter_client_free(struct obd_export *exp)
         struct filter_export_data *fed = &exp->exp_filter_data;
         struct filter_obd *filter = &exp->exp_obd->u.filter;
         struct obd_device *obd = exp->exp_obd;
-        struct filter_client_data zero_fcd;
+        struct lsd_client_data zero_lcd;
         struct lvfs_run_ctxt saved;
         int rc;
         loff_t off;
         ENTRY;
 
-        if (fed->fed_fcd == NULL)
+        if (fed->fed_lcd == NULL)
                 RETURN(0);
 
-        /* XXX if fcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
-        if (strcmp(fed->fed_fcd->fcd_uuid, obd->obd_uuid.uuid ) == 0)
+        /* XXX if lcd_uuid were a real obd_uuid, I could use obd_uuid_equals */
+        if (strcmp(fed->fed_lcd->lcd_uuid, obd->obd_uuid.uuid ) == 0)
                 GOTO(free, 0);
 
         CDEBUG(D_INFO, "freeing client at idx %u, offset %lld with UUID '%s'\n",
-               fed->fed_lr_idx, fed->fed_lr_off, fed->fed_fcd->fcd_uuid);
+               fed->fed_lr_idx, fed->fed_lr_off, fed->fed_lcd->lcd_uuid);
 
         LASSERT(filter->fo_last_rcvd_slots != NULL);
 
@@ -367,10 +367,10 @@ static int filter_client_free(struct obd_export *exp)
         }
 
         if (!(exp->exp_flags & OBD_OPT_FAILOVER)) {
-                memset(&zero_fcd, 0, sizeof zero_fcd);
+                memset(&zero_lcd, 0, sizeof zero_lcd);
                 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-                rc = fsfilt_write_record(obd, filter->fo_rcvd_filp, &zero_fcd,
-                                         sizeof(zero_fcd), &off,
+                rc = fsfilt_write_record(obd, filter->fo_rcvd_filp, &zero_lcd,
+                                         sizeof(zero_lcd), &off,
                                          (!exp->exp_libclient ||
                                           exp->exp_need_sync));
                 if (rc == 0)
@@ -382,7 +382,7 @@ static int filter_client_free(struct obd_export *exp)
 
                 CDEBUG(rc == 0 ? D_INFO : D_ERROR,
                        "zeroing out client %s at idx %u (%llu) in %s rc %d\n",
-                       fed->fed_fcd->fcd_uuid, fed->fed_lr_idx, fed->fed_lr_off,
+                       fed->fed_lcd->lcd_uuid, fed->fed_lr_idx, fed->fed_lr_off,
                        LAST_RCVD, rc);
         }
 
@@ -394,8 +394,8 @@ static int filter_client_free(struct obd_export *exp)
 
         EXIT;
 free:
-        OBD_FREE(fed->fed_fcd, sizeof(*fed->fed_fcd));
-        fed->fed_fcd = NULL;
+        OBD_FREE_PTR(fed->fed_lcd);
+        fed->fed_lcd = NULL;
 
         return 0;
 }
@@ -646,7 +646,7 @@ static int filter_init_server_data(struct obd_device *obd, struct file * filp)
 {
         struct filter_obd *filter = &obd->u.filter;
         struct lr_server_data *fsd;
-        struct filter_client_data *fcd = NULL;
+        struct lsd_client_data *lcd = NULL;
         struct inode *inode = filp->f_dentry->d_inode;
         unsigned long last_rcvd_size = i_size_read(inode);
         __u64 mount_count;
@@ -657,8 +657,8 @@ static int filter_init_server_data(struct obd_device *obd, struct file * filp)
         /* ensure padding in the struct is the correct size */
         CLASSERT (offsetof(struct lr_server_data, lsd_padding) +
                  sizeof(fsd->lsd_padding) == LR_SERVER_SIZE);
-        CLASSERT (offsetof(struct filter_client_data, fcd_padding) +
-                 sizeof(fcd->fcd_padding) == LR_CLIENT_SIZE);
+        CLASSERT (offsetof(struct lsd_client_data, lcd_padding) +
+                 sizeof(lcd->lcd_padding) == LR_CLIENT_SIZE);
 
         OBD_ALLOC(fsd, sizeof(*fsd));
         if (!fsd)
@@ -749,60 +749,59 @@ static int filter_init_server_data(struct obd_device *obd, struct file * filp)
                 struct obd_export *exp;
                 struct filter_export_data *fed;
 
-                if (!fcd) {
-                        OBD_ALLOC(fcd, sizeof(*fcd));
-                        if (!fcd)
+                if (!lcd) {
+                        OBD_ALLOC_PTR(lcd);
+                        if (!lcd)
                                 GOTO(err_client, rc = -ENOMEM);
                 }
 
                 /* Don't assume off is incremented properly by
-                 * fsfilt_read_record(), in case sizeof(*fcd)
+                 * fsfilt_read_record(), in case sizeof(*lcd)
                  * isn't the same as fsd->lsd_client_size.  */
                 off = le32_to_cpu(fsd->lsd_client_start) +
                         cl_idx * le16_to_cpu(fsd->lsd_client_size);
-                rc = fsfilt_read_record(obd, filp, fcd, sizeof(*fcd), &off);
+                rc = fsfilt_read_record(obd, filp, lcd, sizeof(*lcd), &off);
                 if (rc) {
                         CERROR("error reading FILT %s idx %d off %llu: rc %d\n",
                                LAST_RCVD, cl_idx, off, rc);
                         break; /* read error shouldn't cause startup to fail */
                 }
 
-                if (fcd->fcd_uuid[0] == '\0') {
+                if (lcd->lcd_uuid[0] == '\0') {
                         CDEBUG(D_INFO, "skipping zeroed client at offset %d\n",
                                cl_idx);
                         continue;
                 }
 
-                last_rcvd = le64_to_cpu(fcd->fcd_last_rcvd);
+                last_rcvd = le64_to_cpu(lcd->lcd_last_transno);
 
                 /* These exports are cleaned up by filter_disconnect(), so they
                  * need to be set up like real exports as filter_connect() does.
                  */
-                exp = class_new_export(obd, (struct obd_uuid *)fcd->fcd_uuid);
+                exp = class_new_export(obd, (struct obd_uuid *)lcd->lcd_uuid);
 
                 CDEBUG(D_HA, "RCVRNG CLIENT uuid: %s idx: %d lr: "LPU64
-                       " srv lr: "LPU64" fcd_group %d\n", fcd->fcd_uuid, cl_idx,
-                       last_rcvd, le64_to_cpu(fsd->lsd_last_transno),
-                       le32_to_cpu(fcd->fcd_group));
+                       " srv lr: "LPU64"\n", lcd->lcd_uuid, cl_idx,
+                       last_rcvd, le64_to_cpu(fsd->lsd_last_transno));
                 if (IS_ERR(exp)) {
                         if (PTR_ERR(exp) == -EALREADY) {
                                 /* export already exists, zero out this one */
                                 CERROR("Zeroing out duplicate export due to "
                                        "bug 10479.\n");
-                                fcd->fcd_uuid[0] = '\0';
+                                lcd->lcd_uuid[0] = '\0';
                         } else {
                                 GOTO(err_client, rc = PTR_ERR(exp));
                         }
                 } else {
                         fed = &exp->exp_filter_data;
-                        fed->fed_fcd = fcd;
-                        fed->fed_group = le32_to_cpu(fcd->fcd_group);
+                        fed->fed_lcd = lcd;
+                        fed->fed_group = 0; /* will be assigned at connect */
                         filter_export_stats_init(obd, exp, NULL);
                         rc = filter_client_add(obd, exp, cl_idx);
                         /* can't fail for existing client */
                         LASSERTF(rc == 0, "rc = %d\n", rc);
 
-                        fcd = NULL;
+                        lcd = NULL;
                         spin_lock(&exp->exp_lock);
                         exp->exp_connecting = 0;
                         exp->exp_in_recovery = 0;
@@ -819,8 +818,8 @@ static int filter_init_server_data(struct obd_device *obd, struct file * filp)
                         fsd->lsd_last_transno = cpu_to_le64(last_rcvd);
         }
 
-        if (fcd)
-                OBD_FREE(fcd, sizeof(*fcd));
+        if (lcd)
+                OBD_FREE_PTR(lcd);
 
         obd->obd_last_committed = le64_to_cpu(fsd->lsd_last_transno);
 
@@ -2556,7 +2555,7 @@ static int filter_connect(const struct lu_env *env,
         struct lvfs_run_ctxt saved;
         struct obd_export *exp;
         struct filter_export_data *fed;
-        struct filter_client_data *fcd = NULL;
+        struct lsd_client_data *lcd = NULL;
         __u32 group;
         int rc;
         ENTRY;
@@ -2579,15 +2578,14 @@ static int filter_connect(const struct lu_env *env,
         filter_export_stats_init(obd, exp, localdata);
         group = data->ocd_group;
         if (obd->obd_replayable) {
-                OBD_ALLOC(fcd, sizeof(*fcd));
-                if (!fcd) {
+                OBD_ALLOC(lcd, sizeof(*lcd));
+                if (!lcd) {
                         CERROR("filter: out of memory for client data\n");
                         GOTO(cleanup, rc = -ENOMEM);
                 }
 
-                memcpy(fcd->fcd_uuid, cluuid, sizeof(fcd->fcd_uuid));
-                fed->fed_fcd = fcd;
-                fed->fed_fcd->fcd_group = group;
+                memcpy(lcd->lcd_uuid, cluuid, sizeof(lcd->lcd_uuid));
+                fed->fed_lcd = lcd;
                 rc = filter_client_add(obd, exp, -1);
                 if (rc)
                         GOTO(cleanup, rc);
@@ -2618,9 +2616,9 @@ static int filter_connect(const struct lu_env *env,
 
 cleanup:
         if (rc) {
-                if (fcd) {
-                        OBD_FREE(fcd, sizeof(*fcd));
-                        fed->fed_fcd = NULL;
+                if (lcd) {
+                        OBD_FREE_PTR(lcd);
+                        fed->fed_lcd = NULL;
                 }
                 class_disconnect(exp);
         } else {
index 2cdf177..6f2ac82 100644 (file)
 extern struct file_operations filter_per_export_stats_fops;
 extern struct file_operations filter_per_nid_stats_fops;
 
-/* Data stored per client in the last_rcvd file.  In le32 order. */
-struct filter_client_data {
-        __u8  fcd_uuid[40];        /* client UUID */
-        __u64 fcd_last_rcvd;       /* last completed transaction ID */
-        __u64 fcd_last_xid;        /* client RPC xid for the last transaction */
-        __u32 fcd_group;           /* mds group */
-        __u8  fcd_padding[LR_CLIENT_SIZE - 60];
-};
-
 /* Limit the returned fields marked valid to those that we actually might set */
 #define FILTER_VALID_FLAGS (OBD_MD_FLTYPE | OBD_MD_FLMODE | OBD_MD_FLGENER  |\
                             OBD_MD_FLSIZE | OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ|\