Whamcloud - gitweb
b=22615 fixes for regressions caused by 11063
[fs/lustre-release.git] / lustre / liblustre / super.c
index 64fa37a..7be70b9 100644 (file)
@@ -1,24 +1,41 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
  *
- * Lustre Light Super operations
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
  *
- *  Copyright (c) 2002-2004 Cluster File Systems, Inc.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
  *
- *   This file is part of Lustre, http://www.lustre.org.
+ * 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
  *
- *   Lustre is free software; you can redistribute it and/or
- *   modify it under the terms of version 2 of the GNU General Public
- *   License as published by the Free Software Foundation.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
  *
- *   Lustre is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
+ * lustre/liblustre/super.c
  *
- *   You should have received a copy of the GNU General Public License
- *   along with Lustre; if not, write to the Free Software
- *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Lustre Light Super operations
  */
 
 #define DEBUG_SUBSYSTEM S_LLITE
 # include <sys/statfs.h>
 #endif
 
+#include <sysio.h>
 #ifdef HAVE_XTIO_H
 #include <xtio.h>
 #endif
-#include <sysio.h>
 #include <fs.h>
 #include <mount.h>
 #include <inode.h>
@@ -48,8 +65,6 @@
 #include <file.h>
 #endif
 
-#undef LIST_HEAD
-
 #include "llite_lib.h"
 
 #ifndef MAY_EXEC
@@ -67,7 +82,7 @@ static int ll_permission(struct inode *inode, int mask)
 
         if (current->fsuid == st->st_uid)
                 mode >>= 6;
-        else if (in_group_p(st->st_gid))
+        else if (cfs_curproc_is_in_groups(st->st_gid))
                 mode >>= 3;
 
         if ((mode & mask & (MAY_READ|MAY_WRITE|MAY_EXEC)) == mask)
@@ -75,12 +90,12 @@ static int ll_permission(struct inode *inode, int mask)
 
         if ((mask & (MAY_READ|MAY_WRITE)) ||
             (st->st_mode & S_IXUGO))
-                if (capable(CAP_DAC_OVERRIDE))
+                if (cfs_capable(CFS_CAP_DAC_OVERRIDE))
                         return 0;
 
         if (mask == MAY_READ ||
             (S_ISDIR(st->st_mode) && !(mask & MAY_WRITE))) {
-                if (capable(CAP_DAC_READ_SEARCH))
+                if (cfs_capable(CFS_CAP_DAC_READ_SEARCH))
                         return 0;
         }
 
@@ -90,13 +105,14 @@ static int ll_permission(struct inode *inode, int mask)
 static void llu_fsop_gone(struct filesys *fs)
 {
         struct llu_sb_info *sbi = (struct llu_sb_info *) fs->fs_private;
-        struct obd_device *obd = class_exp2obd(sbi->ll_mdc_exp);
+        struct obd_device *obd = class_exp2obd(sbi->ll_md_exp);
         int next = 0;
         ENTRY;
 
-        list_del(&sbi->ll_conn_chain);
-        obd_disconnect(sbi->ll_osc_exp);
-        obd_disconnect(sbi->ll_mdc_exp);
+        cfs_list_del(&sbi->ll_conn_chain);
+        cl_sb_fini(sbi);
+        obd_disconnect(sbi->ll_dt_exp);
+        obd_disconnect(sbi->ll_md_exp);
 
         while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL)
                 class_manual_cleanup(obd);
@@ -109,15 +125,41 @@ static void llu_fsop_gone(struct filesys *fs)
 
 static struct inode_ops llu_inode_ops;
 
-void llu_update_inode(struct inode *inode, struct mds_body *body,
-                      struct lov_stripe_md *lsm)
+static ldlm_mode_t llu_take_md_lock(struct inode *inode, __u64 bits,
+                                    struct lustre_handle *lockh)
+{
+        ldlm_policy_data_t policy = { .l_inodebits = {bits}};
+        struct lu_fid *fid;
+        ldlm_mode_t rc;
+        int flags;
+        ENTRY;
+
+        fid = &llu_i2info(inode)->lli_fid;
+        CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
+
+        flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING;
+        rc = md_lock_match(llu_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
+                           LCK_CR|LCK_CW|LCK_PR|LCK_PW, lockh);
+        RETURN(rc);
+}
+
+void llu_update_inode(struct inode *inode, struct lustre_md *md)
 {
         struct llu_inode_info *lli = llu_i2info(inode);
+        struct mdt_body *body = md->body;
+        struct lov_stripe_md *lsm = md->lsm;
         struct intnl_stat *st = llu_i2stat(inode);
 
         LASSERT ((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
+
+        if (body->valid & OBD_MD_FLMODE)
+                st->st_mode = (st->st_mode & S_IFMT)|(body->mode & ~S_IFMT);
+        if (body->valid & OBD_MD_FLTYPE)
+                st->st_mode = (st->st_mode & ~S_IFMT)|(body->mode & S_IFMT);
+
         if (lsm != NULL) {
                 if (lli->lli_smd == NULL) {
+                        cl_inode_init(inode, md);
                         lli->lli_smd = lsm;
                         lli->lli_maxbytes = lsm->lsm_maxbytes;
                         if (lli->lli_maxbytes > PAGE_CACHE_MAXBYTES)
@@ -131,26 +173,21 @@ void llu_update_inode(struct inode *inode, struct mds_body *body,
                 }
         }
 
-        if (body->valid & OBD_MD_FLID)
-                st->st_ino = body->ino;
-        if (body->valid & OBD_MD_FLATIME &&
-            body->atime > LTIME_S(st->st_atime))
-                LTIME_S(st->st_atime) = body->atime;
-        
-        /* mtime is always updated with ctime, but can be set in past.
-           As write and utime(2) may happen within 1 second, and utime's
-           mtime has a priority over write's one, so take mtime from mds 
-           for the same ctimes. */
-        if (body->valid & OBD_MD_FLCTIME &&
-            body->ctime >= LTIME_S(st->st_ctime)) {
-                LTIME_S(st->st_ctime) = body->ctime;
-                if (body->valid & OBD_MD_FLMTIME)
+        if (body->valid & OBD_MD_FLATIME) {
+                if (body->atime > LTIME_S(st->st_atime))
+                        LTIME_S(st->st_atime) = body->atime;
+                lli->lli_lvb.lvb_atime = body->atime;
+        }
+        if (body->valid & OBD_MD_FLMTIME) {
+                if (body->mtime > LTIME_S(st->st_mtime))
                         LTIME_S(st->st_mtime) = body->mtime;
+                lli->lli_lvb.lvb_mtime = body->mtime;
+        }
+        if (body->valid & OBD_MD_FLCTIME) {
+                if (body->ctime > LTIME_S(st->st_ctime))
+                        LTIME_S(st->st_ctime) = body->ctime;
+                lli->lli_lvb.lvb_ctime = body->ctime;
         }
-        if (body->valid & OBD_MD_FLMODE)
-                st->st_mode = (st->st_mode & S_IFMT)|(body->mode & ~S_IFMT);
-        if (body->valid & OBD_MD_FLTYPE)
-                st->st_mode = (st->st_mode & ~S_IFMT)|(body->mode & S_IFMT);
         if (S_ISREG(st->st_mode))
                 st->st_blksize = min(2UL * PTLRPC_MAX_BRW_SIZE, LL_MAX_BLKSIZE);
         else
@@ -163,22 +200,32 @@ void llu_update_inode(struct inode *inode, struct mds_body *body,
                 st->st_nlink = body->nlink;
         if (body->valid & OBD_MD_FLRDEV)
                 st->st_rdev = body->rdev;
-        if (body->valid & OBD_MD_FLSIZE)
-                st->st_size = body->size;
-        if (body->valid & OBD_MD_FLBLOCKS)
-                st->st_blocks = body->blocks;
         if (body->valid & OBD_MD_FLFLAGS)
                 lli->lli_st_flags = body->flags;
-        if (body->valid & OBD_MD_FLGENER)
-                lli->lli_st_generation = body->generation;
-
-        /* fillin fid */
-        if (body->valid & OBD_MD_FLID)
-                lli->lli_fid.id = body->ino;
-        if (body->valid & OBD_MD_FLGENER)
-                lli->lli_fid.generation = body->generation;
-        if (body->valid & OBD_MD_FLTYPE)
-                lli->lli_fid.f_type = body->mode & S_IFMT;
+        if (body->valid & OBD_MD_FLSIZE) {
+                if ((llu_i2sbi(inode)->ll_lco.lco_flags & OBD_CONNECT_SOM) &&
+                    S_ISREG(st->st_mode) && lli->lli_smd) {
+                        struct lustre_handle lockh;
+                        ldlm_mode_t mode;
+
+                        /* As it is possible a blocking ast has been processed
+                         * by this time, we need to check there is an UPDATE
+                         * lock on the client and set LLIF_MDS_SIZE_LOCK holding
+                         * it. */
+                        mode = llu_take_md_lock(inode, MDS_INODELOCK_UPDATE,
+                                                &lockh);
+                        if (mode) {
+                                st->st_size = body->size;
+                                lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
+                                ldlm_lock_decref(&lockh, mode);
+                        }
+                } else {
+                    st->st_size = body->size;
+                }
+
+                if (body->valid & OBD_MD_FLBLOCKS)
+                        st->st_blocks = body->blocks;
+        }
 }
 
 void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
@@ -189,7 +236,8 @@ void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
         valid &= src->o_valid;
 
         if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
-                CDEBUG(D_INODE,"valid "LPX64", cur time %lu/%lu, new %lu/%lu\n",
+                CDEBUG(D_INODE,"valid "LPX64", cur time "CFS_TIME_T"/"CFS_TIME_T
+                      ", new %lu/%lu\n",
                        src->o_valid,
                        LTIME_S(st->st_mtime), LTIME_S(st->st_ctime),
                        (long)src->o_mtime, (long)src->o_ctime);
@@ -216,8 +264,6 @@ void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
                 st->st_gid = src->o_gid;
         if (valid & OBD_MD_FLFLAGS)
                 lli->lli_st_flags = src->o_flags;
-        if (valid & OBD_MD_FLGENER)
-                lli->lli_st_generation = src->o_generation;
 }
 
 #define S_IRWXUGO       (S_IRWXU|S_IRWXG|S_IRWXO)
@@ -230,7 +276,7 @@ void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid)
         obd_flag newvalid = 0;
 
         if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
-                CDEBUG(D_INODE, "valid %x, new time %lu/%lu\n",
+                CDEBUG(D_INODE, "valid %x, new time "CFS_TIME_T"/"CFS_TIME_T"\n",
                        valid, LTIME_S(st->st_mtime),
                        LTIME_S(st->st_ctime));
 
@@ -290,37 +336,44 @@ void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid)
         dst->o_valid |= newvalid;
 }
 
-/*
- * really does the getattr on the inode and updates its fields
+/**
+ * Performs the getattr on the inode and updates its fields.
+ * If @sync != 0, perform the getattr under the server-side lock.
  */
-int llu_inode_getattr(struct inode *inode, struct lov_stripe_md *lsm)
+int llu_inode_getattr(struct inode *inode, struct obdo *obdo,
+                      __u64 ioepoch, int sync)
 {
         struct llu_inode_info *lli = llu_i2info(inode);
-        struct obd_export *exp = llu_i2obdexp(inode);
         struct ptlrpc_request_set *set;
+        struct lov_stripe_md *lsm = lli->lli_smd;
         struct obd_info oinfo = { { { 0 } } };
-        struct obdo oa = { 0 };
-        obd_flag refresh_valid;
         int rc;
         ENTRY;
 
         LASSERT(lsm);
-        LASSERT(lli);
 
         oinfo.oi_md = lsm;
-        oinfo.oi_oa = &oa;
-        oa.o_id = lsm->lsm_object_id;
-        oa.o_mode = S_IFREG;
-        oa.o_valid = OBD_MD_FLID | OBD_MD_FLTYPE | OBD_MD_FLSIZE |
-                OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ | OBD_MD_FLMTIME |
-                OBD_MD_FLCTIME;
+        oinfo.oi_oa = obdo;
+        oinfo.oi_oa->o_id = lsm->lsm_object_id;
+        oinfo.oi_oa->o_gr = lsm->lsm_object_gr;
+        oinfo.oi_oa->o_mode = S_IFREG;
+        oinfo.oi_oa->o_ioepoch = ioepoch;
+        oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE |
+                               OBD_MD_FLSIZE | OBD_MD_FLBLOCKS |
+                               OBD_MD_FLBLKSZ | OBD_MD_FLMTIME |
+                               OBD_MD_FLCTIME | OBD_MD_FLGROUP |
+                               OBD_MD_FLATIME | OBD_MD_FLEPOCH;
+        if (sync) {
+                oinfo.oi_oa->o_valid |= OBD_MD_FLFLAGS;
+                oinfo.oi_oa->o_flags |= OBD_FL_SRVLOCK;
+        }
 
         set = ptlrpc_prep_set();
         if (set == NULL) {
                 CERROR ("ENOMEM allocing request set\n");
                 rc = -ENOMEM;
         } else {
-                rc = obd_getattr_async(exp, &oinfo, set);
+                rc = obd_getattr_async(llu_i2obdexp(inode), &oinfo, set);
                 if (rc == 0)
                         rc = ptlrpc_set_wait(set);
                 ptlrpc_set_destroy(set);
@@ -328,26 +381,36 @@ int llu_inode_getattr(struct inode *inode, struct lov_stripe_md *lsm)
         if (rc)
                 RETURN(rc);
 
-        refresh_valid = OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ | OBD_MD_FLMTIME |
-                        OBD_MD_FLCTIME | OBD_MD_FLSIZE;
-
-        obdo_refresh_inode(inode, &oa, refresh_valid);
+        oinfo.oi_oa->o_valid = OBD_MD_FLBLOCKS | OBD_MD_FLBLKSZ |
+                               OBD_MD_FLMTIME | OBD_MD_FLCTIME |
+                               OBD_MD_FLSIZE;
 
+        obdo_refresh_inode(inode, oinfo.oi_oa, oinfo.oi_oa->o_valid);
+        CDEBUG(D_INODE, "objid "LPX64" size %Lu, blocks %Lu, "
+               "blksize %Lu\n", lli->lli_smd->lsm_object_id,
+               (long long unsigned)llu_i2stat(inode)->st_size,
+               (long long unsigned)llu_i2stat(inode)->st_blocks,
+               (long long unsigned)llu_i2stat(inode)->st_blksize);
         RETURN(0);
 }
 
 static struct inode* llu_new_inode(struct filesys *fs,
-                                   struct ll_fid *fid)
+                                   struct lu_fid *fid)
 {
         struct inode *inode;
         struct llu_inode_info *lli;
         struct intnl_stat st = {
                 .st_dev  = 0,
+#if 0
 #ifndef AUTOMOUNT_FILE_NAME
                 .st_mode = fid->f_type & S_IFMT,
 #else
                 .st_mode = fid->f_type /* all of the bits! */
 #endif
+#endif
+                /* FIXME: fix this later */
+                .st_mode = 0,
+
                 .st_uid  = geteuid(),
                 .st_gid  = getegid(),
         };
@@ -380,26 +443,20 @@ static struct inode* llu_new_inode(struct filesys *fs,
 
 static int llu_have_md_lock(struct inode *inode, __u64 lockpart)
 {
-        struct llu_sb_info *sbi = llu_i2sbi(inode);
-        struct llu_inode_info *lli = llu_i2info(inode);
         struct lustre_handle lockh;
-        struct ldlm_res_id res_id = { .name = {0} };
-        struct obd_device *obddev;
         ldlm_policy_data_t policy = { .l_inodebits = { lockpart } };
+        struct lu_fid *fid;
         int flags;
         ENTRY;
 
         LASSERT(inode);
 
-        obddev = sbi->ll_mdc_exp->exp_obd;
-        res_id.name[0] = llu_i2stat(inode)->st_ino;
-        res_id.name[1] = lli->lli_st_generation;
-
-        CDEBUG(D_INFO, "trying to match res "LPU64"\n", res_id.name[0]);
+        fid = &llu_i2info(inode)->lli_fid;
+        CDEBUG(D_INFO, "trying to match res "DFID"\n", PFID(fid));
 
         flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
-        if (ldlm_lock_match(obddev->obd_namespace, flags, &res_id, LDLM_IBITS,
-                            &policy, LCK_PW | LCK_PR, &lockh)) {
+        if (md_lock_match(llu_i2mdexp(inode), flags, fid, LDLM_IBITS, &policy,
+                          LCK_CR|LCK_CW|LCK_PR|LCK_PW, &lockh)) {
                 RETURN(1);
         }
         RETURN(0);
@@ -407,7 +464,8 @@ static int llu_have_md_lock(struct inode *inode, __u64 lockpart)
 
 static int llu_inode_revalidate(struct inode *inode)
 {
-        struct lov_stripe_md *lsm = NULL;
+        struct llu_inode_info *lli = llu_i2info(inode);
+        struct intnl_stat *st = llu_i2stat(inode);
         ENTRY;
 
         if (!inode) {
@@ -419,24 +477,29 @@ static int llu_inode_revalidate(struct inode *inode)
                 struct lustre_md md;
                 struct ptlrpc_request *req = NULL;
                 struct llu_sb_info *sbi = llu_i2sbi(inode);
-                struct ll_fid fid;
+                struct md_op_data op_data = { { 0 } };
                 unsigned long valid = OBD_MD_FLGETATTR;
                 int rc, ealen = 0;
 
                 /* Why don't we update all valid MDS fields here, if we're
                  * doing an RPC anyways?  -phil */
-                if (S_ISREG(llu_i2stat(inode)->st_mode)) {
-                        ealen = obd_size_diskmd(sbi->ll_osc_exp, NULL);
+                if (S_ISREG(st->st_mode)) {
+                        ealen = obd_size_diskmd(sbi->ll_dt_exp, NULL);
                         valid |= OBD_MD_FLEASIZE;
                 }
-                ll_inode2fid(&fid, inode);
-                rc = mdc_getattr(sbi->ll_mdc_exp, &fid, valid, ealen, &req);
+
+                llu_prep_md_op_data(&op_data, inode, NULL, NULL, 0, ealen,
+                                    LUSTRE_OPC_ANY);
+                op_data.op_valid = valid;
+
+                rc = md_getattr(sbi->ll_md_exp, &op_data, &req);
                 if (rc) {
                         CERROR("failure %d inode %llu\n", rc,
-                               (long long)llu_i2stat(inode)->st_ino);
+                               (long long)st->st_ino);
                         RETURN(-abs(rc));
                 }
-                rc = mdc_req2lustre_md(req, REPLY_REC_OFF, sbi->ll_osc_exp,&md);
+                rc = md_get_lustre_md(sbi->ll_md_exp, req,
+                                      sbi->ll_dt_exp, sbi->ll_md_exp, &md);
 
                 /* XXX Too paranoid? */
                 if (((md.body->valid ^ valid) & OBD_MD_FLEASIZE) &&
@@ -453,23 +516,23 @@ static int llu_inode_revalidate(struct inode *inode)
                 }
 
 
-                llu_update_inode(inode, md.body, md.lsm);
-                if (md.lsm != NULL && llu_i2info(inode)->lli_smd != md.lsm)
-                        obd_free_memmd(sbi->ll_osc_exp, &md.lsm);
-
-                if (md.body->valid & OBD_MD_FLSIZE)
-                        set_bit(LLI_F_HAVE_MDS_SIZE_LOCK,
-                                &llu_i2info(inode)->lli_flags);
+                llu_update_inode(inode, &md);
+                if (md.lsm != NULL && lli->lli_smd != md.lsm)
+                        obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
                 ptlrpc_req_finished(req);
         }
 
-        lsm = llu_i2info(inode)->lli_smd;
-        if (!lsm)       /* object not yet allocated, don't validate size */
+        if (!lli->lli_smd) {
+                /* object not yet allocated, don't validate size */
+                st->st_atime = lli->lli_lvb.lvb_atime;
+                st->st_mtime = lli->lli_lvb.lvb_mtime;
+                st->st_ctime = lli->lli_lvb.lvb_ctime;
                 RETURN(0);
+        }
 
         /* ll_glimpse_size will prefer locally cached writes if they extend
          * the file */
-        RETURN(llu_glimpse_size(inode));
+        RETURN(cl_glimpse_size(inode));
 }
 
 static void copy_stat_buf(struct inode *ino, struct intnl_stat *b)
@@ -521,7 +584,6 @@ static int null_if_equal(struct ldlm_lock *lock, void *data)
 
 void llu_clear_inode(struct inode *inode)
 {
-        struct ll_fid fid;
         struct llu_inode_info *lli = llu_i2info(inode);
         struct llu_sb_info *sbi = llu_i2sbi(inode);
         ENTRY;
@@ -530,16 +592,18 @@ void llu_clear_inode(struct inode *inode)
                (long long)llu_i2stat(inode)->st_ino, lli->lli_st_generation,
                inode);
 
-        ll_inode2fid(&fid, inode);
-        clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &(lli->lli_flags));
-        mdc_change_cbdata(sbi->ll_mdc_exp, &fid, null_if_equal, inode);
+        lli->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
+        md_change_cbdata(sbi->ll_md_exp, ll_inode2fid(inode),
+                         null_if_equal, inode);
 
         if (lli->lli_smd)
-                obd_change_cbdata(sbi->ll_osc_exp, lli->lli_smd,
+                obd_change_cbdata(sbi->ll_dt_exp, lli->lli_smd,
                                   null_if_equal, inode);
 
+        cl_inode_fini(inode);
+
         if (lli->lli_smd) {
-                obd_free_memmd(sbi->ll_osc_exp, &lli->lli_smd);
+                obd_free_memmd(sbi->ll_dt_exp, &lli->lli_smd);
                 lli->lli_smd = NULL;
         }
 
@@ -590,13 +654,87 @@ static int inode_setattr(struct inode * inode, struct iattr * attr)
                 st->st_ctime = attr->ia_ctime;
         if (ia_valid & ATTR_MODE) {
                 st->st_mode = attr->ia_mode;
-                if (!in_group_p(st->st_gid) && !capable(CAP_FSETID))
+                if (!cfs_curproc_is_in_groups(st->st_gid) &&
+                    !cfs_capable(CFS_CAP_FSETID))
                         st->st_mode &= ~S_ISGID;
         }
         /* mark_inode_dirty(inode); */
         return error;
 }
 
+int llu_md_setattr(struct inode *inode, struct md_op_data *op_data,
+                   struct md_open_data **mod)
+{
+        struct lustre_md md;
+        struct llu_sb_info *sbi = llu_i2sbi(inode);
+        struct ptlrpc_request *request = NULL;
+        int rc;
+        ENTRY;
+
+        llu_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0, LUSTRE_OPC_ANY);
+        rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL,
+                        0, &request, mod);
+
+        if (rc) {
+                ptlrpc_req_finished(request);
+                if (rc != -EPERM && rc != -EACCES)
+                        CERROR("md_setattr fails: rc = %d\n", rc);
+                RETURN(rc);
+        }
+
+        rc = md_get_lustre_md(sbi->ll_md_exp, request,
+                              sbi->ll_dt_exp, sbi->ll_md_exp, &md);
+        if (rc) {
+                ptlrpc_req_finished(request);
+                RETURN(rc);
+        }
+
+        /* We call inode_setattr to adjust timestamps.
+         * If there is at least some data in file, we cleared ATTR_SIZE
+         * above to avoid invoking vmtruncate, otherwise it is important
+         * to call vmtruncate in inode_setattr to update inode->i_size
+         * (bug 6196) */
+        inode_setattr(inode, &op_data->op_attr);
+        llu_update_inode(inode, &md);
+        ptlrpc_req_finished(request);
+
+        RETURN(rc);
+}
+
+/* Close IO epoch and send Size-on-MDS attribute update. */
+static int llu_setattr_done_writing(struct inode *inode,
+                                    struct md_op_data *op_data,
+                                    struct md_open_data *mod)
+{
+        struct llu_inode_info *lli = llu_i2info(inode);
+        struct intnl_stat *st = llu_i2stat(inode);
+        int rc = 0;
+        ENTRY;
+
+        LASSERT(op_data != NULL);
+        if (!S_ISREG(st->st_mode))
+                RETURN(0);
+
+        /* XXX: pass och here for the recovery purpose. */
+        CDEBUG(D_INODE, "Epoch "LPU64" closed on "DFID" for truncate\n",
+               op_data->op_ioepoch, PFID(&lli->lli_fid));
+
+        op_data->op_flags = MF_EPOCH_CLOSE;
+        llu_done_writing_attr(inode, op_data);
+        llu_pack_inode2opdata(inode, op_data, NULL);
+
+        rc = md_done_writing(llu_i2sbi(inode)->ll_md_exp, op_data, mod);
+        if (rc == -EAGAIN) {
+                /* MDS has instructed us to obtain Size-on-MDS attribute
+                 * from OSTs and send setattr to back to MDS. */
+                rc = llu_som_update(inode, op_data);
+        } else if (rc) {
+                CERROR("inode %llu mdc truncate failed: rc = %d\n",
+                       (unsigned long long)st->st_ino, rc);
+        }
+        RETURN(rc);
+}
+
 /* If this inode has objects allocated to it (lsm != NULL), then the OST
  * object(s) determine the file size and mtime.  Otherwise, the MDS will
  * keep these values until such a time that objects are allocated for it.
@@ -613,12 +751,11 @@ static int inode_setattr(struct inode * inode, struct iattr * attr)
 int llu_setattr_raw(struct inode *inode, struct iattr *attr)
 {
         struct lov_stripe_md *lsm = llu_i2info(inode)->lli_smd;
-        struct llu_sb_info *sbi = llu_i2sbi(inode);
         struct intnl_stat *st = llu_i2stat(inode);
-        struct ptlrpc_request *request = NULL;
-        struct mdc_op_data op_data;
         int ia_valid = attr->ia_valid;
-        int rc = 0;
+        struct md_op_data op_data = { { 0 } };
+        struct md_open_data *mod = NULL;
+        int rc = 0, rc1 = 0;
         ENTRY;
 
         CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu\n", (long long)st->st_ino);
@@ -636,71 +773,47 @@ int llu_setattr_raw(struct inode *inode, struct iattr *attr)
 
         /* We mark all of the fields "set" so MDS/OST does not re-set them */
         if (attr->ia_valid & ATTR_CTIME) {
-                attr->ia_ctime = CURRENT_TIME;
+                attr->ia_ctime = CFS_CURRENT_TIME;
                 attr->ia_valid |= ATTR_CTIME_SET;
         }
         if (!(ia_valid & ATTR_ATIME_SET) && (attr->ia_valid & ATTR_ATIME)) {
-                attr->ia_atime = CURRENT_TIME;
+                attr->ia_atime = CFS_CURRENT_TIME;
                 attr->ia_valid |= ATTR_ATIME_SET;
         }
         if (!(ia_valid & ATTR_MTIME_SET) && (attr->ia_valid & ATTR_MTIME)) {
-                attr->ia_mtime = CURRENT_TIME;
+                attr->ia_mtime = CFS_CURRENT_TIME;
                 attr->ia_valid |= ATTR_MTIME_SET;
         }
-        if ((attr->ia_valid & ATTR_CTIME) && !(attr->ia_valid & ATTR_MTIME)) {
-                /* To avoid stale mtime on mds, obtain it from ost and send 
-                   to mds. */
-                rc = llu_glimpse_size(inode);
-                if (rc) 
-                        RETURN(rc);
-                
-                attr->ia_valid |= ATTR_MTIME_SET | ATTR_MTIME;
-                attr->ia_mtime = inode->i_stbuf.st_mtime;
-        }
 
         if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
-                CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
+                CDEBUG(D_INODE, "setting mtime "CFS_TIME_T", ctime "CFS_TIME_T
+                      ", now = "CFS_TIME_T"\n",
                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
-                       LTIME_S(CURRENT_TIME));
+                       LTIME_S(CFS_CURRENT_TIME));
+
+        /* NB: ATTR_SIZE will only be set after this point if the size
+         * resides on the MDS, ie, this file has no objects. */
         if (lsm)
                 attr->ia_valid &= ~ATTR_SIZE;
 
         /* If only OST attributes being set on objects, don't do MDS RPC.
          * In that case, we need to check permissions and update the local
          * inode ourselves so we can call obdo_from_inode() always. */
-        if (ia_valid & (lsm ? ~(ATTR_SIZE | ATTR_FROM_OPEN | ATTR_RAW) : ~0)) {
-                struct lustre_md md;
-                llu_prepare_mdc_op_data(&op_data, inode, NULL, NULL, 0, 0);
-
-                rc = mdc_setattr(sbi->ll_mdc_exp, &op_data,
-                                  attr, NULL, 0, NULL, 0, &request);
-
-                if (rc) {
-                        ptlrpc_req_finished(request);
-                        if (rc != -EPERM && rc != -EACCES)
-                                CERROR("mdc_setattr fails: rc = %d\n", rc);
-                        RETURN(rc);
-                }
-
-                rc = mdc_req2lustre_md(request, REPLY_REC_OFF, sbi->ll_osc_exp,
-                                       &md);
-                if (rc) {
-                        ptlrpc_req_finished(request);
+        if (ia_valid & (lsm ? ~(ATTR_FROM_OPEN | ATTR_RAW) : ~0)) {
+                memcpy(&op_data.op_attr, attr, sizeof(*attr));
+
+                /* Open epoch for truncate. */
+                if (exp_connect_som(llu_i2mdexp(inode)) &&
+                    (ia_valid & ATTR_SIZE))
+                        op_data.op_flags = MF_EPOCH_OPEN;
+                rc = llu_md_setattr(inode, &op_data, &mod);
+                if (rc)
                         RETURN(rc);
-                }
-
-                /* We call inode_setattr to adjust timestamps.
-                 * If there is at least some data in file, we cleared ATTR_SIZE
-                 * above to avoid invoking vmtruncate, otherwise it is important
-                 * to call vmtruncate in inode_setattr to update inode->i_size
-                 * (bug 6196) */
-                inode_setattr(inode, attr);
-                llu_update_inode(inode, md.body, md.lsm);
-                ptlrpc_req_finished(request);
 
+                llu_ioepoch_open(llu_i2info(inode), op_data.op_ioepoch);
                 if (!lsm || !S_ISREG(st->st_mode)) {
                         CDEBUG(D_INODE, "no lsm: not setting attrs on OST\n");
-                        RETURN(0);
+                        GOTO(out, rc);
                 }
         } else {
                 /* The OST doesn't check permissions, but the alternative is
@@ -716,84 +829,32 @@ int llu_setattr_raw(struct inode *inode, struct iattr *attr)
                         } else {
                                 /* from inode_change_ok() */
                                 if (current->fsuid != st->st_uid &&
-                                    !capable(CAP_FOWNER))
+                                    !cfs_capable(CFS_CAP_FOWNER))
                                         RETURN(-EPERM);
                         }
                 }
 
+
                 /* Won't invoke llu_vmtruncate(), as we already cleared
                  * ATTR_SIZE */
                 inode_setattr(inode, attr);
         }
 
-        if (ia_valid & ATTR_SIZE) {
-                ldlm_policy_data_t policy = { .l_extent = {attr->ia_size,
-                                                           OBD_OBJECT_EOF} };
-                struct lustre_handle lockh = { 0, };
-                struct lustre_handle match_lockh = { 0, };
-
-                int err;
-                int flags = LDLM_FL_TEST_LOCK; /* for assertion check below */
-                int lock_mode;
-                obd_flag obd_flags;
-
-                /* check that there are no matching locks */
-                LASSERT(obd_match(sbi->ll_osc_exp, lsm, LDLM_EXTENT, &policy,
-                                  LCK_PW, &flags, inode, &match_lockh) <= 0);
-
-                /* XXX when we fix the AST intents to pass the discard-range
-                 * XXX extent, make ast_flags always LDLM_AST_DISCARD_DATA
-                 * XXX here. */
-                flags = (attr->ia_size == 0) ? LDLM_AST_DISCARD_DATA : 0;
-
-                if (sbi->ll_lco.lco_flags & OBD_CONNECT_TRUNCLOCK) {
-                        lock_mode = LCK_NL;
-                        obd_flags = OBD_FL_TRUNCLOCK;
-                        CDEBUG(D_INODE, "delegating locking to the OST");
-                } else {
-                        lock_mode = LCK_PW;
-                        obd_flags = 0;
-                }
-
-                /* with lock_mode == LK_NL no lock is taken. */
-                rc = llu_extent_lock(NULL, inode, lsm, lock_mode, &policy,
-                                     &lockh, flags);
-                if (rc != ELDLM_OK) {
-                        if (rc > 0)
-                                RETURN(-ENOLCK);
-                        RETURN(rc);
-                }
-
-                rc = llu_vmtruncate(inode, attr->ia_size, obd_flags);
-
-                /* unlock now as we don't mind others file lockers racing with
-                 * the mds updates below? */
-                err = llu_extent_unlock(NULL, inode, lsm, lock_mode, &lockh);
-                if (err) {
-                        CERROR("llu_extent_unlock failed: %d\n", err);
-                        if (!rc)
-                                rc = err;
-                }
-        } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
-                struct obd_info oinfo = { { { 0 } } };
-                struct obdo oa;
-
-                CDEBUG(D_INODE, "set mtime on OST inode %llu to %lu\n",
-                       (long long)st->st_ino, LTIME_S(attr->ia_mtime));
-                oa.o_id = lsm->lsm_object_id;
-                oa.o_valid = OBD_MD_FLID;
-
-                obdo_from_inode(&oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
-                                            OBD_MD_FLMTIME | OBD_MD_FLCTIME);
-
-                oinfo.oi_oa = &oa;
-                oinfo.oi_md = lsm;
-
-                rc = obd_setattr_rqset(sbi->ll_osc_exp, &oinfo, NULL);
-                if (rc)
-                        CERROR("obd_setattr_async fails: rc=%d\n", rc);
-        }
-        RETURN(rc);
+        if (ia_valid & ATTR_SIZE)
+                attr->ia_valid |= ATTR_SIZE;
+        if ((ia_valid & ATTR_SIZE) | 
+            ((ia_valid | ATTR_ATIME | ATTR_ATIME_SET) &&
+             LTIME_S(attr->ia_atime) < LTIME_S(attr->ia_ctime)) ||
+            ((ia_valid | ATTR_MTIME | ATTR_MTIME_SET) &&
+             LTIME_S(attr->ia_mtime) < LTIME_S(attr->ia_ctime)))
+                /* perform truncate and setting mtime/atime to past under PW
+                 * 0:EOF extent lock (new_size:EOF for truncate) */
+                rc = cl_setattr_ost(inode, attr, NULL);
+        EXIT;
+out:
+        if (op_data.op_ioepoch)
+                rc1 = llu_setattr_done_writing(inode, &op_data, mod);
+        return rc ? rc : rc1;
 }
 
 /* here we simply act as a thin layer to glue it with
@@ -841,10 +902,10 @@ static int llu_iop_setattr(struct pnode *pno,
         }
 
         iattr.ia_valid |= ATTR_RAW | ATTR_CTIME;
-        iattr.ia_ctime = CURRENT_TIME;
+        iattr.ia_ctime = CFS_CURRENT_TIME;
 
         rc = llu_setattr_raw(ino, &iattr);
-        liblustre_wait_event(0);
+        liblustre_wait_idle();
         RETURN(rc);
 }
 
@@ -858,7 +919,7 @@ static int llu_iop_symlink_raw(struct pnode *pno, const char *tgt)
         int len = qstr->len;
         struct ptlrpc_request *request = NULL;
         struct llu_sb_info *sbi = llu_i2sbi(dir);
-        struct mdc_op_data op_data;
+        struct md_op_data op_data = {{ 0 }};
         int err = -EMLINK;
         ENTRY;
 
@@ -866,11 +927,12 @@ static int llu_iop_symlink_raw(struct pnode *pno, const char *tgt)
         if (llu_i2stat(dir)->st_nlink >= EXT2_LINK_MAX)
                 RETURN(err);
 
-        llu_prepare_mdc_op_data(&op_data, dir, NULL, name, len, 0);
-        err = mdc_create(sbi->ll_mdc_exp, &op_data,
-                         tgt, strlen(tgt) + 1, S_IFLNK | S_IRWXUGO,
-                         current->fsuid, current->fsgid, current->cap_effective,
-                         0, &request);
+        llu_prep_md_op_data(&op_data, dir, NULL, name, len, 0,
+                            LUSTRE_OPC_SYMLINK);
+
+        err = md_create(sbi->ll_md_exp, &op_data, tgt, strlen(tgt) + 1,
+                        S_IFLNK | S_IRWXUGO, current->fsuid, current->fsgid,
+                        cfs_curproc_cap_pack(), 0, &request);
         ptlrpc_req_finished(request);
         liblustre_wait_event(0);
         RETURN(err);
@@ -882,13 +944,14 @@ static int llu_readlink_internal(struct inode *inode,
 {
         struct llu_inode_info *lli = llu_i2info(inode);
         struct llu_sb_info *sbi = llu_i2sbi(inode);
-        struct ll_fid fid;
-        struct mds_body *body;
+        struct mdt_body *body;
         struct intnl_stat *st = llu_i2stat(inode);
+        struct md_op_data op_data = {{ 0 }};
         int rc, symlen = st->st_size + 1;
         ENTRY;
 
         *request = NULL;
+        *symname = NULL;
 
         if (lli->lli_symlink_name) {
                 *symname = lli->lli_symlink_name;
@@ -896,18 +959,18 @@ static int llu_readlink_internal(struct inode *inode,
                 RETURN(0);
         }
 
-        ll_inode2fid(&fid, inode);
-        rc = mdc_getattr(sbi->ll_mdc_exp, &fid,
-                         OBD_MD_LINKNAME, symlen, request);
+        llu_prep_md_op_data(&op_data, inode, NULL, NULL, 0, symlen,
+                            LUSTRE_OPC_ANY);
+        op_data.op_valid = OBD_MD_LINKNAME;
+
+        rc = md_getattr(sbi->ll_md_exp, &op_data, request);
         if (rc) {
                 CERROR("inode %llu: rc = %d\n", (long long)st->st_ino, rc);
                 RETURN(rc);
         }
 
-        body = lustre_msg_buf((*request)->rq_repmsg, REPLY_REC_OFF,
-                              sizeof(*body));
+        body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
         LASSERT(body != NULL);
-        LASSERT_REPSWABBED(*request, REPLY_REC_OFF);
 
         if ((body->valid & OBD_MD_LINKNAME) == 0) {
                 CERROR ("OBD_MD_LINKNAME not set on reply\n");
@@ -921,8 +984,7 @@ static int llu_readlink_internal(struct inode *inode,
                 GOTO(failed, rc = -EPROTO);
         }
 
-        *symname = lustre_msg_buf((*request)->rq_repmsg, REPLY_REC_OFF + 1,
-                                   symlen);
+        *symname = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_MD);
         if (*symname == NULL ||
             strnlen(*symname, symlen) != symlen - 1) {
                 /* not full/NULL terminated */
@@ -973,7 +1035,7 @@ static int llu_iop_mknod_raw(struct pnode *pno,
         struct ptlrpc_request *request = NULL;
         struct inode *dir = pno->p_parent->p_base->pb_ino;
         struct llu_sb_info *sbi = llu_i2sbi(dir);
-        struct mdc_op_data op_data;
+        struct md_op_data op_data = {{ 0 }};
         int err = -EMLINK;
         ENTRY;
 
@@ -993,13 +1055,14 @@ static int llu_iop_mknod_raw(struct pnode *pno,
         case S_IFBLK:
         case S_IFIFO:
         case S_IFSOCK:
-                llu_prepare_mdc_op_data(&op_data, dir, NULL,
-                                        pno->p_base->pb_name.name,
-                                        pno->p_base->pb_name.len,
-                                        0);
-                err = mdc_create(sbi->ll_mdc_exp, &op_data, NULL, 0, mode,
-                                 current->fsuid, current->fsgid,
-                                 current->cap_effective, dev, &request);
+                llu_prep_md_op_data(&op_data, dir, NULL,
+                                    pno->p_base->pb_name.name,
+                                    pno->p_base->pb_name.len, 0,
+                                    LUSTRE_OPC_MKNOD);
+
+                err = md_create(sbi->ll_md_exp, &op_data, NULL, 0, mode,
+                                current->fsuid, current->fsgid,
+                                cfs_curproc_cap_pack(), dev, &request);
                 ptlrpc_req_finished(request);
                 break;
         case S_IFDIR:
@@ -1019,7 +1082,7 @@ static int llu_iop_link_raw(struct pnode *old, struct pnode *new)
         const char *name = new->p_base->pb_name.name;
         int namelen = new->p_base->pb_name.len;
         struct ptlrpc_request *request = NULL;
-        struct mdc_op_data op_data;
+        struct md_op_data op_data = {{ 0 }};
         int rc;
         ENTRY;
 
@@ -1027,8 +1090,9 @@ static int llu_iop_link_raw(struct pnode *old, struct pnode *new)
         LASSERT(dir);
 
         liblustre_wait_event(0);
-        llu_prepare_mdc_op_data(&op_data, src, dir, name, namelen, 0);
-        rc = mdc_link(llu_i2sbi(src)->ll_mdc_exp, &op_data, &request);
+        llu_prep_md_op_data(&op_data, src, dir, name, namelen, 0,
+                            LUSTRE_OPC_ANY);
+        rc = md_link(llu_i2sbi(src)->ll_md_exp, &op_data, &request);
         ptlrpc_req_finished(request);
         liblustre_wait_event(0);
 
@@ -1046,19 +1110,20 @@ static int llu_iop_unlink_raw(struct pnode *pno)
         int len = qstr->len;
         struct inode *target = pno->p_base->pb_ino;
         struct ptlrpc_request *request = NULL;
-        struct mdc_op_data op_data;
+        struct md_op_data op_data = { { 0 } };
         int rc;
         ENTRY;
 
         LASSERT(target);
 
         liblustre_wait_event(0);
-        llu_prepare_mdc_op_data(&op_data, dir, NULL, name, len, 0);
-        rc = mdc_unlink(llu_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
+        llu_prep_md_op_data(&op_data, dir, NULL, name, len, 0,
+                            LUSTRE_OPC_ANY);
+        rc = md_unlink(llu_i2sbi(dir)->ll_md_exp, &op_data, &request);
         if (!rc)
                 rc = llu_objects_destroy(request, dir);
         ptlrpc_req_finished(request);
-        liblustre_wait_event(0);
+        liblustre_wait_idle();
 
         RETURN(rc);
 }
@@ -1072,7 +1137,7 @@ static int llu_iop_rename_raw(struct pnode *old, struct pnode *new)
         const char *newname = new->p_base->pb_name.name;
         int newnamelen = new->p_base->pb_name.len;
         struct ptlrpc_request *request = NULL;
-        struct mdc_op_data op_data;
+        struct md_op_data op_data = { { 0 } };
         int rc;
         ENTRY;
 
@@ -1080,16 +1145,17 @@ static int llu_iop_rename_raw(struct pnode *old, struct pnode *new)
         LASSERT(tgt);
 
         liblustre_wait_event(0);
-        llu_prepare_mdc_op_data(&op_data, src, tgt, NULL, 0, 0);
-        rc = mdc_rename(llu_i2sbi(src)->ll_mdc_exp, &op_data,
-                        oldname, oldnamelen, newname, newnamelen,
-                        &request);
+        llu_prep_md_op_data(&op_data, src, tgt, NULL, 0, 0,
+                            LUSTRE_OPC_ANY);
+        rc = md_rename(llu_i2sbi(src)->ll_md_exp, &op_data,
+                       oldname, oldnamelen, newname, newnamelen,
+                       &request);
         if (!rc) {
                 rc = llu_objects_destroy(request, src);
         }
 
         ptlrpc_req_finished(request);
-        liblustre_wait_event(0);
+        liblustre_wait_idle();
 
         RETURN(rc);
 }
@@ -1102,17 +1168,17 @@ static int llu_statfs_internal(struct llu_sb_info *sbi,
         int rc;
         ENTRY;
 
-        rc = obd_statfs(class_exp2obd(sbi->ll_mdc_exp), osfs, max_age);
+        rc = obd_statfs(class_exp2obd(sbi->ll_md_exp), osfs, max_age, 0);
         if (rc) {
-                CERROR("mdc_statfs fails: rc = %d\n", rc);
+                CERROR("md_statfs fails: rc = %d\n", rc);
                 RETURN(rc);
         }
 
         CDEBUG(D_SUPER, "MDC blocks "LPU64"/"LPU64" objects "LPU64"/"LPU64"\n",
                osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,osfs->os_files);
 
-        rc = obd_statfs_rqset(class_exp2obd(sbi->ll_osc_exp),
-                              &obd_osfs, max_age);
+        rc = obd_statfs_rqset(class_exp2obd(sbi->ll_dt_exp),
+                              &obd_statfs, max_age, 0);
         if (rc) {
                 CERROR("obd_statfs fails: rc = %d\n", rc);
                 RETURN(rc);
@@ -1149,7 +1215,7 @@ static int llu_statfs(struct llu_sb_info *sbi, struct statfs *sfs)
         /* For now we will always get up-to-date statfs values, but in the
          * future we may allow some amount of caching on the client (e.g.
          * from QOS or lprocfs updates). */
-        rc = llu_statfs_internal(sbi, &osfs, cfs_time_current_64() - HZ);
+        rc = llu_statfs_internal(sbi, &osfs, cfs_time_current_64() - CFS_HZ);
         if (rc)
                 return rc;
 
@@ -1215,7 +1281,7 @@ static int llu_iop_mkdir_raw(struct pnode *pno, mode_t mode)
         int len = qstr->len;
         struct ptlrpc_request *request = NULL;
         struct intnl_stat *st = llu_i2stat(dir);
-        struct mdc_op_data op_data;
+        struct md_op_data op_data = {{ 0 }};
         int err = -EMLINK;
         ENTRY;
 
@@ -1226,10 +1292,12 @@ static int llu_iop_mkdir_raw(struct pnode *pno, mode_t mode)
         if (st->st_nlink >= EXT2_LINK_MAX)
                 RETURN(err);
 
-        llu_prepare_mdc_op_data(&op_data, dir, NULL, name, len, 0);
-        err = mdc_create(llu_i2sbi(dir)->ll_mdc_exp, &op_data, NULL, 0, mode | S_IFDIR,
-                         current->fsuid, current->fsgid, current->cap_effective,
-                         0, &request);
+        llu_prep_md_op_data(&op_data, dir, NULL, name, len, 0,
+                            LUSTRE_OPC_MKDIR);
+
+        err = md_create(llu_i2sbi(dir)->ll_md_exp, &op_data, NULL, 0,
+                        mode | S_IFDIR, current->fsuid, current->fsgid,
+                        cfs_curproc_cap_pack(), 0, &request);
         ptlrpc_req_finished(request);
         liblustre_wait_event(0);
         RETURN(err);
@@ -1242,7 +1310,7 @@ static int llu_iop_rmdir_raw(struct pnode *pno)
         const char *name = qstr->name;
         int len = qstr->len;
         struct ptlrpc_request *request = NULL;
-        struct mdc_op_data op_data;
+        struct md_op_data op_data = {{ 0 }};
         int rc;
         ENTRY;
 
@@ -1251,8 +1319,9 @@ static int llu_iop_rmdir_raw(struct pnode *pno)
                (long long)llu_i2stat(dir)->st_ino,
                llu_i2info(dir)->lli_st_generation, dir);
 
-        llu_prepare_mdc_op_data(&op_data, dir, NULL, name, len, S_IFDIR);
-        rc = mdc_unlink(llu_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
+        llu_prep_md_op_data(&op_data, dir, NULL, name, len, S_IFDIR,
+                            LUSTRE_OPC_ANY);
+        rc = md_unlink(llu_i2sbi(dir)->ll_md_exp, &op_data, &request);
         ptlrpc_req_finished(request);
 
         liblustre_wait_event(0);
@@ -1274,16 +1343,20 @@ static int llu_file_flock(struct inode *ino,
         struct llu_inode_info *lli = llu_i2info(ino);
         struct intnl_stat *st = llu_i2stat(ino);
         struct ldlm_res_id res_id =
-                { .name = {st->st_ino,
-                           lli->lli_st_generation, LDLM_FLOCK} };
+                { .name = {fid_seq(&lli->lli_fid),
+                           fid_oid(&lli->lli_fid),
+                           fid_ver(&lli->lli_fid),
+                           LDLM_FLOCK} };
+        struct ldlm_enqueue_info einfo = { LDLM_FLOCK, 0, NULL,
+                ldlm_flock_completion_ast, NULL, NULL, file_lock };
+
         struct lustre_handle lockh = {0};
         ldlm_policy_data_t flock;
-        ldlm_mode_t mode = 0;
         int flags = 0;
         int rc;
 
         CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu file_lock=%p\n",
-               (unsigned long long) st->st_ino, file_lock);
+               (unsigned long long)st->st_ino, file_lock);
 
         flock.l_flock.pid = file_lock->fl_pid;
         flock.l_flock.start = file_lock->fl_start;
@@ -1291,13 +1364,13 @@ static int llu_file_flock(struct inode *ino,
 
         switch (file_lock->fl_type) {
         case F_RDLCK:
-                mode = LCK_PR;
+                einfo.ei_mode = LCK_PR;
                 break;
         case F_UNLCK:
-                mode = LCK_NL;
+                einfo.ei_mode = LCK_NL;
                 break;
         case F_WRLCK:
-                mode = LCK_PW;
+                einfo.ei_mode = LCK_PW;
                 break;
         default:
                 CERROR("unknown fcntl lock type: %d\n", file_lock->fl_type);
@@ -1328,22 +1401,33 @@ static int llu_file_flock(struct inode *ino,
 #endif
 #endif
                 flags = LDLM_FL_TEST_LOCK;
-                file_lock->fl_type = mode;
+                file_lock->fl_type = einfo.ei_mode;
                 break;
         default:
                 CERROR("unknown fcntl cmd: %d\n", cmd);
                 LBUG();
         }
 
-        CDEBUG(D_DLMTRACE, "inode=%llu, pid=%u, flags=%#x, mode=%u, "
-               "start="LPU64", end="LPU64"\n",
-               (unsigned long long) st->st_ino, flock.l_flock.pid,
-               flags, mode, flock.l_flock.start, flock.l_flock.end);
+        CDEBUG(D_DLMTRACE, "inode=%llu, pid=%u, cmd=%d, flags=%#x, mode=%u, "
+               "start="LPX64", end="LPX64"\n", (unsigned long long)st->st_ino,
+               flock.l_flock.pid, cmd, flags, einfo.ei_mode, flock.l_flock.start,
+               flock.l_flock.end);
+
+        {
+                struct lmv_obd *lmv;
+                struct obd_device *lmv_obd;
+                lmv_obd = class_exp2obd(llu_i2mdexp(ino));
+                lmv = &lmv_obd->u.lmv;
 
-        rc = ldlm_cli_enqueue(llu_i2mdcexp(ino), NULL, res_id, 
-                              LDLM_FLOCK, &flock, mode, &flags, NULL, 
-                              ldlm_flock_completion_ast, NULL, 
-                              file_lock, NULL, 0, NULL, &lockh, 0);
+                if (lmv->desc.ld_tgt_count < 1)
+                        RETURN(rc = -ENODEV);
+
+                if (lmv->tgts[0].ltd_exp != NULL)
+                        rc = ldlm_cli_enqueue(lmv->tgts[0].ltd_exp, NULL, &einfo, &res_id,
+                                              &flock, &flags, NULL, 0, &lockh, 0);
+                else
+                        rc = -ENODEV;
+        }
         RETURN(rc);
 }
 
@@ -1477,8 +1561,9 @@ static int llu_iop_fcntl(struct inode *ino, int cmd, va_list ap, int *rtn)
                 flags = va_arg(ap, long);
                 flags &= FCNTL_FLMASK;
                 if (flags & FCNTL_FLMASK_INVALID) {
-                        CERROR("liblustre don't support O_NONBLOCK, O_ASYNC, "
-                               "and O_DIRECT on file descriptor\n");
+                        LCONSOLE_ERROR_MSG(0x010, "liblustre does not support "
+                                           "the O_NONBLOCK or O_ASYNC flags. "
+                                           "Please fix your application.\n");
                         *rtn = -EINVAL;
                         err = EINVAL;
                         break;
@@ -1528,91 +1613,99 @@ static int llu_get_grouplock(struct inode *inode, unsigned long arg)
 {
         struct llu_inode_info *lli = llu_i2info(inode);
         struct ll_file_data *fd = lli->lli_file_data;
-        ldlm_policy_data_t policy = { .l_extent = { .start = 0,
-                                                    .end = OBD_OBJECT_EOF}};
-        struct lustre_handle lockh = { 0 };
-        struct lov_stripe_md *lsm = lli->lli_smd;
-        ldlm_error_t err;
-        int flags = 0;
+        int rc;
+        struct ccc_grouplock grouplock;
         ENTRY;
 
+        if (fd->fd_flags & LL_FILE_IGNORE_LOCK) {
+                RETURN(-ENOTSUPP);
+        }
         if (fd->fd_flags & LL_FILE_GROUP_LOCKED) {
                 RETURN(-EINVAL);
         }
+        LASSERT(fd->fd_grouplock.cg_lock == NULL);
 
-        policy.l_extent.gid = arg;
-        if (lli->lli_open_flags & O_NONBLOCK)
-                flags = LDLM_FL_BLOCK_NOWAIT;
+        rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
+                              arg, (lli->lli_open_flags & O_NONBLOCK),
+                              &grouplock);
 
-        err = llu_extent_lock(fd, inode, lsm, LCK_GROUP, &policy, &lockh,
-                              flags);
-        if (err)
-                RETURN(err);
+        if (rc)
+                RETURN(rc);
 
-        fd->fd_flags |= LL_FILE_GROUP_LOCKED|LL_FILE_IGNORE_LOCK;
-        fd->fd_gid = arg;
-        memcpy(&fd->fd_cwlockh, &lockh, sizeof(lockh));
+        fd->fd_flags |= LL_FILE_GROUP_LOCKED;
+        fd->fd_grouplock = grouplock;
 
         RETURN(0);
 }
 
-static int llu_put_grouplock(struct inode *inode, unsigned long arg)
+int llu_put_grouplock(struct inode *inode, unsigned long arg)
 {
         struct llu_inode_info *lli = llu_i2info(inode);
         struct ll_file_data *fd = lli->lli_file_data;
-        struct lov_stripe_md *lsm = lli->lli_smd;
-        ldlm_error_t err;
+        struct ccc_grouplock grouplock;
         ENTRY;
 
         if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED))
                 RETURN(-EINVAL);
 
-        if (fd->fd_gid != arg)
-                RETURN(-EINVAL);
+        LASSERT(fd->fd_grouplock.cg_lock != NULL);
 
-        fd->fd_flags &= ~(LL_FILE_GROUP_LOCKED|LL_FILE_IGNORE_LOCK);
+        if (fd->fd_grouplock.cg_gid != arg)
+                RETURN(-EINVAL);
 
-        err = llu_extent_unlock(fd, inode, lsm, LCK_GROUP, &fd->fd_cwlockh);
-        if (err)
-                RETURN(err);
+        grouplock = fd->fd_grouplock;
+        memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
+        fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
 
-        fd->fd_gid = 0;
-        memset(&fd->fd_cwlockh, 0, sizeof(fd->fd_cwlockh));
+        cl_put_grouplock(&grouplock);
 
         RETURN(0);
 }
 
 static int llu_lov_dir_setstripe(struct inode *ino, unsigned long arg)
 {
-        struct llu_sb_info *sbi = llu_i2sbi(ino); 
+        struct llu_sb_info *sbi = llu_i2sbi(ino);
         struct ptlrpc_request *request = NULL;
-        struct mdc_op_data op_data;
-        struct iattr attr = { 0 };
+        struct md_op_data op_data = {{ 0 }};
         struct lov_user_md lum, *lump = (struct lov_user_md *)arg;
         int rc = 0;
 
-        llu_prepare_mdc_op_data(&op_data, ino, NULL, NULL, 0, 0);
+        llu_prep_md_op_data(&op_data, ino, NULL, NULL, 0, 0,
+                            LUSTRE_OPC_ANY);
 
         LASSERT(sizeof(lum) == sizeof(*lump));
         LASSERT(sizeof(lum.lmm_objects[0]) ==
                 sizeof(lump->lmm_objects[0]));
-        rc = copy_from_user(&lum, lump, sizeof(lum));
-        if (rc)
+        if (cfs_copy_from_user(&lum, lump, sizeof(lum)))
                 return(-EFAULT);
 
-        if (lum.lmm_magic != LOV_USER_MAGIC)
+        switch (lum.lmm_magic) {
+        case LOV_USER_MAGIC_V1: {
+                if (lum.lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V1))
+                        lustre_swab_lov_user_md_v1(&lum);
+                break;
+                }
+        case LOV_USER_MAGIC_V3: {
+                if (lum.lmm_magic != cpu_to_le32(LOV_USER_MAGIC_V3))
+                        lustre_swab_lov_user_md_v3((struct lov_user_md_v3 *)&lum);
+                break;
+                }
+        default: {
+                CDEBUG(D_IOCTL, "bad userland LOV MAGIC:"
+                                " %#08x != %#08x nor %#08x\n",
+                                lum.lmm_magic, LOV_USER_MAGIC_V1,
+                                LOV_USER_MAGIC_V3);
                 RETURN(-EINVAL);
-
-        if (lum.lmm_magic != cpu_to_le32(LOV_USER_MAGIC))
-                lustre_swab_lov_user_md(&lum);
+        }
+        }
 
         /* swabbing is done in lov_setstripe() on server side */
-        rc = mdc_setattr(sbi->ll_mdc_exp, &op_data,
-                         &attr, &lum, sizeof(lum), NULL, 0, &request);
+        rc = md_setattr(sbi->ll_md_exp, &op_data, &lum,
+                        sizeof(lum), NULL, 0, &request, NULL);
         if (rc) {
                 ptlrpc_req_finished(request);
                 if (rc != -EPERM && rc != -EACCES)
-                        CERROR("mdc_setattr fails: rc = %d\n", rc);
+                        CERROR("md_setattr fails: rc = %d\n", rc);
                 return rc;
         }
         ptlrpc_req_finished(request);
@@ -1623,84 +1716,63 @@ static int llu_lov_dir_setstripe(struct inode *ino, unsigned long arg)
 static int llu_lov_setstripe_ea_info(struct inode *ino, int flags,
                                      struct lov_user_md *lum, int lum_size)
 {
-        struct llu_sb_info *sbi = llu_i2sbi(ino); 
-        struct obd_export *exp = llu_i2obdexp(ino);
+        struct llu_sb_info *sbi = llu_i2sbi(ino);
         struct llu_inode_info *lli = llu_i2info(ino);
-        struct llu_inode_info *lli2 = NULL;
-        struct lov_stripe_md *lsm;
         struct lookup_intent oit = {.it_op = IT_OPEN, .it_flags = flags};
+        struct ldlm_enqueue_info einfo = { LDLM_IBITS, LCK_CR,
+                llu_md_blocking_ast, ldlm_completion_ast, NULL, NULL, NULL };
         struct ptlrpc_request *req = NULL;
         struct lustre_md md;
-        struct mdc_op_data data;
+        struct md_op_data data = {{ 0 }};
         struct lustre_handle lockh;
         int rc = 0;
         ENTRY;
 
-        lsm = lli->lli_smd;
-        if (lsm) {
-                CDEBUG(D_IOCTL, "stripe already exists for ino "LPU64"\n",
-                       lli->lli_fid.id);
+        if (lli->lli_smd) {
+                CDEBUG(D_IOCTL, "stripe already exists for ino "DFID"\n",
+                       PFID(&lli->lli_fid));
                 return -EEXIST;
         }
 
-        OBD_ALLOC(lli2, sizeof(struct llu_inode_info));
-        if (!lli2)
-                return -ENOMEM;
-        
-        memcpy(lli2, lli, sizeof(struct llu_inode_info));
-        lli2->lli_open_count = 0;
-        lli2->lli_it = NULL;
-        lli2->lli_file_data = NULL;
-        lli2->lli_smd = NULL;
-        lli2->lli_symlink_name = NULL;
-        ino->i_private = lli2;
-
-        llu_prepare_mdc_op_data(&data, NULL, ino, NULL, 0, O_RDWR);
-
-        rc = mdc_enqueue(sbi->ll_mdc_exp, LDLM_IBITS, &oit, LCK_CR, &data,
-                         &lockh, lum, lum_size, ldlm_completion_ast,
-                         llu_mdc_blocking_ast, NULL, LDLM_FL_INTENT_ONLY);
+        llu_prep_md_op_data(&data, NULL, ino, NULL, 0, O_RDWR,
+                            LUSTRE_OPC_ANY);
+        rc = md_enqueue(sbi->ll_md_exp, &einfo, &oit, &data,
+                        &lockh, lum, lum_size, NULL, LDLM_FL_INTENT_ONLY);
         if (rc)
                 GOTO(out, rc);
-        
+
         req = oit.d.lustre.it_data;
         rc = it_open_error(DISP_IT_EXECD, &oit);
         if (rc) {
                 req->rq_replay = 0;
                 GOTO(out, rc);
         }
-        
+
         rc = it_open_error(DISP_OPEN_OPEN, &oit);
         if (rc) {
                 req->rq_replay = 0;
                 GOTO(out, rc);
         }
-        
-        rc = mdc_req2lustre_md(req, DLM_REPLY_REC_OFF, exp, &md);
+
+        rc = md_get_lustre_md(sbi->ll_md_exp, req,
+                              sbi->ll_dt_exp, sbi->ll_md_exp, &md);
         if (rc)
                 GOTO(out, rc);
-        
-        llu_update_inode(ino, md.body, md.lsm);
-        lli->lli_smd = lli2->lli_smd;
-        lli2->lli_smd = NULL;
 
-        llu_local_open(lli2, &oit);
-       
+        llu_update_inode(ino, &md);
+        llu_local_open(lli, &oit);
         /* release intent */
         if (lustre_handle_is_used(&lockh))
                 ldlm_lock_decref(&lockh, LCK_CR);
-
         ptlrpc_req_finished(req);
         req = NULL;
-        
         rc = llu_file_release(ino);
- out:
-        ino->i_private = lli;
-        if (lli2)
-                OBD_FREE(lli2, sizeof(struct llu_inode_info));
+        EXIT;
+
+out:
         if (req != NULL)
                 ptlrpc_req_finished(req);
-        RETURN(rc);
+        return rc;
 }
 
 static int llu_lov_file_setstripe(struct inode *ino, unsigned long arg)
@@ -1712,8 +1784,7 @@ static int llu_lov_file_setstripe(struct inode *ino, unsigned long arg)
 
         LASSERT(sizeof(lum) == sizeof(*lump));
         LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lump->lmm_objects[0]));
-        rc = copy_from_user(&lum, lump, sizeof(lum));
-        if (rc)
+        if (cfs_copy_from_user(&lum, lump, sizeof(lum)))
                 RETURN(-EFAULT);
 
         rc = llu_lov_setstripe_ea_info(ino, flags, &lum, sizeof(lum));
@@ -1727,8 +1798,8 @@ static int llu_lov_setstripe(struct inode *ino, unsigned long arg)
                 return llu_lov_file_setstripe(ino, arg);
         if (S_ISDIR(st->st_mode))
                 return llu_lov_dir_setstripe(ino, arg);
-        
-        return -EINVAL; 
+
+        return -EINVAL;
 }
 
 static int llu_lov_getstripe(struct inode *ino, unsigned long arg)
@@ -1800,45 +1871,38 @@ struct filesys_ops llu_filesys_ops =
 struct inode *llu_iget(struct filesys *fs, struct lustre_md *md)
 {
         struct inode *inode;
-        struct ll_fid fid;
+        struct lu_fid fid;
         struct file_identifier fileid = {&fid, sizeof(fid)};
 
-        if ((md->body->valid &
-             (OBD_MD_FLGENER | OBD_MD_FLID | OBD_MD_FLTYPE)) !=
-            (OBD_MD_FLGENER | OBD_MD_FLID | OBD_MD_FLTYPE)) {
+        if ((md->body->valid & (OBD_MD_FLID | OBD_MD_FLTYPE)) !=
+            (OBD_MD_FLID | OBD_MD_FLTYPE)) {
                 CERROR("bad md body valid mask "LPX64"\n", md->body->valid);
                 LBUG();
                 return ERR_PTR(-EPERM);
         }
 
         /* try to find existing inode */
-        fid.id = md->body->ino;
-        fid.generation = md->body->generation;
-        fid.f_type = md->body->mode & S_IFMT;
+        fid = md->body->fid1;
 
         inode = _sysio_i_find(fs, &fileid);
         if (inode) {
-                struct llu_inode_info *lli = llu_i2info(inode);
-
-                if (inode->i_zombie ||
-                    lli->lli_st_generation != md->body->generation) {
+                if (inode->i_zombie/* ||
+                    lli->lli_st_generation != md->body->generation*/) {
                         I_RELE(inode);
                 }
                 else {
-                        llu_update_inode(inode, md->body, md->lsm);
+                        llu_update_inode(inode, md);
                         return inode;
                 }
         }
 
         inode = llu_new_inode(fs, &fid);
         if (inode)
-                llu_update_inode(inode, md->body, md->lsm);
+                llu_update_inode(inode, md);
 
         return inode;
 }
 
-extern struct list_head lustre_profile_list;
-
 static int
 llu_fsswop_mount(const char *source,
                  unsigned flags,
@@ -1850,13 +1914,10 @@ llu_fsswop_mount(const char *source,
         struct inode *root;
         struct pnode_base *rootpb;
         struct obd_device *obd;
-        struct ll_fid rootfid;
         struct llu_sb_info *sbi;
         struct obd_statfs osfs;
         static struct qstr noname = { NULL, 0, 0 };
         struct ptlrpc_request *request = NULL;
-        struct lustre_handle mdc_conn = {0, };
-        struct lustre_handle osc_conn = {0, };
         struct lustre_md md;
         class_uuid_t uuid;
         struct config_llog_instance cfg = {0, };
@@ -1866,6 +1927,7 @@ llu_fsswop_mount(const char *source,
         char *osc = NULL, *mdc = NULL;
         int async = 1, err = -EINVAL;
         struct obd_connect_data ocd = {0,};
+        struct md_op_data op_data = {{0}};
 
         ENTRY;
 
@@ -1884,7 +1946,7 @@ llu_fsswop_mount(const char *source,
         if (!sbi)
                 RETURN(-ENOMEM);
 
-        INIT_LIST_HEAD(&sbi->ll_conn_chain);
+        CFS_INIT_LIST_HEAD(&sbi->ll_conn_chain);
         ll_generate_random_uuid(uuid);
         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
 
@@ -1906,11 +1968,11 @@ llu_fsswop_mount(const char *source,
                 CERROR("No profile found: %s\n", zconf_profile);
                 GOTO(out_free, err = -EINVAL);
         }
-        OBD_ALLOC(osc, strlen(lprof->lp_osc) + strlen(ll_instance) + 2);
-        sprintf(osc, "%s-%s", lprof->lp_osc, ll_instance);
+        OBD_ALLOC(osc, strlen(lprof->lp_dt) + strlen(ll_instance) + 2);
+        sprintf(osc, "%s-%s", lprof->lp_dt, ll_instance);
 
-        OBD_ALLOC(mdc, strlen(lprof->lp_mdc) + strlen(ll_instance) + 2);
-        sprintf(mdc, "%s-%s", lprof->lp_mdc, ll_instance);
+        OBD_ALLOC(mdc, strlen(lprof->lp_md) + strlen(ll_instance) + 2);
+        sprintf(mdc, "%s-%s", lprof->lp_md, ll_instance);
 
         if (!osc) {
                 CERROR("no osc\n");
@@ -1932,24 +1994,28 @@ llu_fsswop_mount(const char *source,
                 CERROR("MDC %s: not setup or attached\n", mdc);
                 GOTO(out_free, err = -EINVAL);
         }
-        obd_set_info_async(obd->obd_self_export, strlen("async"), "async",
+        obd_set_info_async(obd->obd_self_export, sizeof(KEY_ASYNC), KEY_ASYNC,
                            sizeof(async), &async, NULL);
 
-        ocd.ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_VERSION;
+        ocd.ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_VERSION |
+                                OBD_CONNECT_FID | OBD_CONNECT_AT |
+                                OBD_CONNECT_VBR | OBD_CONNECT_SOM;
+#ifdef LIBLUSTRE_POSIX_ACL
+        ocd.ocd_connect_flags |= OBD_CONNECT_ACL;
+#endif
         ocd.ocd_ibits_known = MDS_INODELOCK_FULL;
         ocd.ocd_version = LUSTRE_VERSION_CODE;
 
         /* setup mdc */
-        err = obd_connect(&mdc_conn, obd, &sbi->ll_sb_uuid, &ocd);
+        err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, &ocd, NULL);
         if (err) {
                 CERROR("cannot connect to %s: rc = %d\n", mdc, err);
                 GOTO(out_free, err);
         }
-        sbi->ll_mdc_exp = class_conn2export(&mdc_conn);
 
-        err = obd_statfs(obd, &osfs, 100000000);
+        err = obd_statfs(obd, &osfs, 100000000, 0);
         if (err)
-                GOTO(out_mdc, err);
+                GOTO(out_md, err);
 
         /*
          * FIXME fill fs stat data into sbi here!!! FIXME
@@ -1959,50 +2025,58 @@ llu_fsswop_mount(const char *source,
         obd = class_name2obd(osc);
         if (!obd) {
                 CERROR("OSC %s: not setup or attached\n", osc);
-                GOTO(out_mdc, err = -EINVAL);
+                GOTO(out_md, err = -EINVAL);
         }
-        obd_set_info_async(obd->obd_self_export, strlen("async"), "async",
+        obd_set_info_async(obd->obd_self_export, sizeof(KEY_ASYNC), KEY_ASYNC,
                            sizeof(async), &async, NULL);
 
         obd->obd_upcall.onu_owner = &sbi->ll_lco;
-        obd->obd_upcall.onu_upcall = ll_ocd_update;
+        obd->obd_upcall.onu_upcall = cl_ocd_update;
 
         ocd.ocd_connect_flags = OBD_CONNECT_SRVLOCK | OBD_CONNECT_REQPORTAL |
-                                OBD_CONNECT_VERSION | OBD_CONNECT_TRUNCLOCK;
+                                OBD_CONNECT_VERSION | OBD_CONNECT_TRUNCLOCK |
+                                OBD_CONNECT_FID | OBD_CONNECT_AT |
+                                OBD_CONNECT_SOM;
+
         ocd.ocd_version = LUSTRE_VERSION_CODE;
-        err = obd_connect(&osc_conn, obd, &sbi->ll_sb_uuid, &ocd);
+        err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, &ocd, NULL);
         if (err) {
                 CERROR("cannot connect to %s: rc = %d\n", osc, err);
-                GOTO(out_mdc, err);
+                GOTO(out_md, err);
         }
-        sbi->ll_osc_exp = class_conn2export(&osc_conn);
         sbi->ll_lco.lco_flags = ocd.ocd_connect_flags;
+        sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
+        sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
 
-        mdc_init_ea_size(sbi->ll_mdc_exp, sbi->ll_osc_exp);
-
-        err = mdc_getstatus(sbi->ll_mdc_exp, &rootfid);
+        fid_zero(&sbi->ll_root_fid);
+        err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, NULL);
         if (err) {
                 CERROR("cannot mds_connect: rc = %d\n", err);
-                GOTO(out_osc, err);
+                GOTO(out_lock_cn_cb, err);
+        }
+        if (!fid_is_sane(&sbi->ll_root_fid)) {
+                CERROR("Invalid root fid during mount\n");
+                GOTO(out_lock_cn_cb, err = -EINVAL);
         }
-        CDEBUG(D_SUPER, "rootfid "LPU64"\n", rootfid.id);
-        sbi->ll_rootino = rootfid.id;
+        CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
 
+        op_data.op_fid1 = sbi->ll_root_fid;
+        op_data.op_valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS;
         /* fetch attr of root inode */
-        err = mdc_getattr(sbi->ll_mdc_exp, &rootfid,
-                          OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS, 0, &request);
+        err = md_getattr(sbi->ll_md_exp, &op_data, &request);
         if (err) {
-                CERROR("mdc_getattr failed for root: rc = %d\n", err);
-                GOTO(out_osc, err);
+                CERROR("md_getattr failed for root: rc = %d\n", err);
+                GOTO(out_lock_cn_cb, err);
         }
 
-        err = mdc_req2lustre_md(request, REPLY_REC_OFF, sbi->ll_osc_exp, &md);
+        err = md_get_lustre_md(sbi->ll_md_exp, request,
+                               sbi->ll_dt_exp, sbi->ll_md_exp, &md);
         if (err) {
                 CERROR("failed to understand root inode md: rc = %d\n",err);
                 GOTO(out_request, err);
         }
 
-        LASSERT(sbi->ll_rootino != 0);
+        LASSERT(fid_is_sane(&sbi->ll_root_fid));
 
         root = llu_iget(fs, &md);
         if (!root || IS_ERR(root)) {
@@ -2025,6 +2099,8 @@ llu_fsswop_mount(const char *source,
                 goto out_inode;
         }
 
+        cl_sb_init(sbi);
+
         ptlrpc_req_finished(request);
 
         CDEBUG(D_SUPER, "LibLustre: %s mounted successfully!\n", source);
@@ -2036,17 +2112,16 @@ out_inode:
         _sysio_i_gone(root);
 out_request:
         ptlrpc_req_finished(request);
-out_osc:
-        obd_disconnect(sbi->ll_osc_exp);
-out_mdc:
-        obd_disconnect(sbi->ll_mdc_exp);
+out_lock_cn_cb:
+        obd_disconnect(sbi->ll_dt_exp);
+out_md:
+        obd_disconnect(sbi->ll_md_exp);
 out_free:
         if (osc)
                 OBD_FREE(osc, strlen(osc) + 1);
         if (mdc)
                 OBD_FREE(mdc, strlen(mdc) + 1);
         OBD_FREE(sbi, sizeof(*sbi));
-
         liblustre_wait_idle();
         return err;
 }