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b=22615 fixes for regressions caused by 11063
[fs/lustre-release.git] / lustre / liblustre / super.c
index af3d3aa..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.
+ *
+ * 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).
  *
- *  Copyright (c) 2002, 2003 Cluster File Systems, Inc.
+ * 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
  *
- *   This file is part of Lustre, http://www.lustre.org.
+ * 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.
  *
- *   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.
+ * 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
@@ -29,7 +46,7 @@
 #include <time.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#include <sys/fcntl.h>
+#include <fcntl.h>
 #include <sys/queue.h>
 #ifndef __CYGWIN__
 # include <sys/statvfs.h>
 #endif
 
 #include <sysio.h>
+#ifdef HAVE_XTIO_H
+#include <xtio.h>
+#endif
 #include <fs.h>
 #include <mount.h>
 #include <inode.h>
+#ifdef HAVE_FILE_H
 #include <file.h>
+#endif
 
 #include "llite_lib.h"
 
+#ifndef MAY_EXEC
+#define MAY_EXEC        1
+#define MAY_WRITE       2
+#define MAY_READ        4
+#endif
+
+#define S_IXUGO (S_IXUSR|S_IXGRP|S_IXOTH)
+
+static int ll_permission(struct inode *inode, int mask)
+{
+        struct intnl_stat *st = llu_i2stat(inode);
+        mode_t mode = st->st_mode;
+
+        if (current->fsuid == st->st_uid)
+                mode >>= 6;
+        else if (cfs_curproc_is_in_groups(st->st_gid))
+                mode >>= 3;
+
+        if ((mode & mask & (MAY_READ|MAY_WRITE|MAY_EXEC)) == mask)
+                return 0;
+
+        if ((mask & (MAY_READ|MAY_WRITE)) ||
+            (st->st_mode & S_IXUGO))
+                if (cfs_capable(CFS_CAP_DAC_OVERRIDE))
+                        return 0;
+
+        if (mask == MAY_READ ||
+            (S_ISDIR(st->st_mode) && !(mask & MAY_WRITE))) {
+                if (cfs_capable(CFS_CAP_DAC_READ_SEARCH))
+                        return 0;
+        }
+
+        return -EACCES;
+}
+
 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 ll_fid rootfid;
+        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, 0);
-
-        /* NULL request to force sync on the MDS, and get the last_committed
-         * value to flush remaining RPCs from the sending queue on client.
-         *
-         * XXX This should be an mdc_sync() call to sync the whole MDS fs,
-         *     which we can call for other reasons as well.
-         */
-        if (!obd->obd_no_recov)
-                mdc_getstatus(sbi->ll_mdc_exp, &rootfid);
+        cfs_list_del(&sbi->ll_conn_chain);
+        cl_sb_fini(sbi);
+        obd_disconnect(sbi->ll_dt_exp);
+        obd_disconnect(sbi->ll_md_exp);
 
-        obd_disconnect(sbi->ll_mdc_exp, 0);
+        while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL)
+                class_manual_cleanup(obd);
 
         OBD_FREE(sbi, sizeof(*sbi));
 
+        liblustre_wait_idle();
         EXIT;
 }
 
 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)
                                 lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
                 } else {
-                        if (memcmp(lli->lli_smd, lsm, sizeof(*lsm))) {
-                                CERROR("lsm mismatch for inode %ld\n",
-                                       lli->lli_st_ino);
+                        if (lov_stripe_md_cmp(lli->lli_smd, lsm)) {
+                                CERROR("lsm mismatch for inode %lld\n",
+                                       (long long)st->st_ino);
                                 LBUG();
                         }
                 }
         }
 
-        if (body->valid & OBD_MD_FLID)
-                lli->lli_st_ino = body->ino;
-        if (body->valid & OBD_MD_FLATIME)
-                LTIME_S(lli->lli_st_atime) = body->atime;
-        if (body->valid & OBD_MD_FLMTIME)
-                LTIME_S(lli->lli_st_mtime) = body->mtime;
-        if (body->valid & OBD_MD_FLCTIME)
-                LTIME_S(lli->lli_st_ctime) = body->ctime;
-        if (body->valid & OBD_MD_FLMODE)
-                lli->lli_st_mode = (lli->lli_st_mode & S_IFMT)|(body->mode & ~S_IFMT);
-        if (body->valid & OBD_MD_FLTYPE)
-                lli->lli_st_mode = (lli->lli_st_mode & ~S_IFMT)|(body->mode & S_IFMT);
+        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 (S_ISREG(st->st_mode))
+                st->st_blksize = min(2UL * PTLRPC_MAX_BRW_SIZE, LL_MAX_BLKSIZE);
+        else
+                st->st_blksize = 4096;
         if (body->valid & OBD_MD_FLUID)
-                lli->lli_st_uid = body->uid;
+                st->st_uid = body->uid;
         if (body->valid & OBD_MD_FLGID)
-                lli->lli_st_gid = body->gid;
-        if (body->valid & OBD_MD_FLFLAGS)
-                lli->lli_st_flags = body->flags;
+                st->st_gid = body->gid;
         if (body->valid & OBD_MD_FLNLINK)
-                lli->lli_st_nlink = body->nlink;
-        if (body->valid & OBD_MD_FLGENER)
-                lli->lli_st_generation = body->generation;
+                st->st_nlink = body->nlink;
         if (body->valid & OBD_MD_FLRDEV)
-                lli->lli_st_rdev = body->rdev;
-        if (body->valid & OBD_MD_FLSIZE)
-                lli->lli_st_size = body->size;
-        if (body->valid & OBD_MD_FLBLOCKS)
-                lli->lli_st_blocks = body->blocks;
-
-        /* 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;
+                st->st_rdev = body->rdev;
+        if (body->valid & OBD_MD_FLFLAGS)
+                lli->lli_st_flags = body->flags;
+        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)
 {
         struct llu_inode_info *lli = llu_i2info(dst);
+        struct intnl_stat *st = llu_i2stat(dst);
 
         valid &= src->o_valid;
 
         if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
-                CDEBUG(D_INODE, "valid %x, cur time %lu/%lu, new %lu/%lu\n",
-                       src->o_valid, 
-                       LTIME_S(lli->lli_st_mtime), LTIME_S(lli->lli_st_ctime),
+                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);
 
         if (valid & OBD_MD_FLATIME)
-                LTIME_S(lli->lli_st_atime) = src->o_atime;
+                LTIME_S(st->st_atime) = src->o_atime;
         if (valid & OBD_MD_FLMTIME)
-                LTIME_S(lli->lli_st_mtime) = src->o_mtime;
-        if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(lli->lli_st_ctime))
-                LTIME_S(lli->lli_st_ctime) = src->o_ctime;
+                LTIME_S(st->st_mtime) = src->o_mtime;
+        if (valid & OBD_MD_FLCTIME && src->o_ctime > LTIME_S(st->st_ctime))
+                LTIME_S(st->st_ctime) = src->o_ctime;
         if (valid & OBD_MD_FLSIZE)
-                lli->lli_st_size = src->o_size;
+                st->st_size = src->o_size;
         if (valid & OBD_MD_FLBLOCKS) /* allocation of space */
-                lli->lli_st_blocks = src->o_blocks;
+                st->st_blocks = src->o_blocks;
         if (valid & OBD_MD_FLBLKSZ)
-                lli->lli_st_blksize = src->o_blksize;
+                st->st_blksize = src->o_blksize;
         if (valid & OBD_MD_FLTYPE)
-                lli->lli_st_mode = (lli->lli_st_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
+                st->st_mode = (st->st_mode & ~S_IFMT) | (src->o_mode & S_IFMT);
         if (valid & OBD_MD_FLMODE)
-                lli->lli_st_mode = (lli->lli_st_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
+                st->st_mode = (st->st_mode & S_IFMT) | (src->o_mode & ~S_IFMT);
         if (valid & OBD_MD_FLUID)
-                lli->lli_st_uid = src->o_uid;
+                st->st_uid = src->o_uid;
         if (valid & OBD_MD_FLGID)
-                lli->lli_st_gid = src->o_gid;
+                st->st_gid = src->o_gid;
         if (valid & OBD_MD_FLFLAGS)
                 lli->lli_st_flags = src->o_flags;
-        if (valid & OBD_MD_FLNLINK)
-                lli->lli_st_nlink = src->o_nlink;
-        if (valid & OBD_MD_FLGENER)
-                lli->lli_st_generation = src->o_generation;
-        if (valid & OBD_MD_FLRDEV)
-                lli->lli_st_rdev = to_kdev_t(src->o_rdev);
 }
 
 #define S_IRWXUGO       (S_IRWXU|S_IRWXG|S_IRWXO)
@@ -180,102 +272,108 @@ void obdo_to_inode(struct inode *dst, struct obdo *src, obd_flag valid)
 void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid)
 {
         struct llu_inode_info *lli = llu_i2info(src);
+        struct intnl_stat *st = llu_i2stat(src);
         obd_flag newvalid = 0;
 
         if (valid & (OBD_MD_FLCTIME | OBD_MD_FLMTIME))
-                CDEBUG(D_INODE, "valid %x, new time %lu/%lu\n",
-                       valid, LTIME_S(lli->lli_st_mtime), 
-                       LTIME_S(lli->lli_st_ctime));
+                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));
 
         if (valid & OBD_MD_FLATIME) {
-                dst->o_atime = LTIME_S(lli->lli_st_atime);
+                dst->o_atime = LTIME_S(st->st_atime);
                 newvalid |= OBD_MD_FLATIME;
         }
         if (valid & OBD_MD_FLMTIME) {
-                dst->o_mtime = LTIME_S(lli->lli_st_mtime);
+                dst->o_mtime = LTIME_S(st->st_mtime);
                 newvalid |= OBD_MD_FLMTIME;
         }
         if (valid & OBD_MD_FLCTIME) {
-                dst->o_ctime = LTIME_S(lli->lli_st_ctime);
+                dst->o_ctime = LTIME_S(st->st_ctime);
                 newvalid |= OBD_MD_FLCTIME;
         }
         if (valid & OBD_MD_FLSIZE) {
-                dst->o_size = lli->lli_st_size;
+                dst->o_size = st->st_size;
                 newvalid |= OBD_MD_FLSIZE;
         }
         if (valid & OBD_MD_FLBLOCKS) {  /* allocation of space (x512 bytes) */
-                dst->o_blocks = lli->lli_st_blocks;
+                dst->o_blocks = st->st_blocks;
                 newvalid |= OBD_MD_FLBLOCKS;
         }
         if (valid & OBD_MD_FLBLKSZ) {   /* optimal block size */
-                dst->o_blksize = lli->lli_st_blksize;
+                dst->o_blksize = st->st_blksize;
                 newvalid |= OBD_MD_FLBLKSZ;
         }
         if (valid & OBD_MD_FLTYPE) {
-                dst->o_mode = (dst->o_mode & S_IALLUGO)|(lli->lli_st_mode & S_IFMT);
+                dst->o_mode = (dst->o_mode & S_IALLUGO)|(st->st_mode & S_IFMT);
                 newvalid |= OBD_MD_FLTYPE;
         }
         if (valid & OBD_MD_FLMODE) {
-                dst->o_mode = (dst->o_mode & S_IFMT)|(lli->lli_st_mode & S_IALLUGO);
+                dst->o_mode = (dst->o_mode & S_IFMT)|(st->st_mode & S_IALLUGO);
                 newvalid |= OBD_MD_FLMODE;
         }
         if (valid & OBD_MD_FLUID) {
-                dst->o_uid = lli->lli_st_uid;
+                dst->o_uid = st->st_uid;
                 newvalid |= OBD_MD_FLUID;
         }
         if (valid & OBD_MD_FLGID) {
-                dst->o_gid = lli->lli_st_gid;
+                dst->o_gid = st->st_gid;
                 newvalid |= OBD_MD_FLGID;
         }
         if (valid & OBD_MD_FLFLAGS) {
                 dst->o_flags = lli->lli_st_flags;
                 newvalid |= OBD_MD_FLFLAGS;
         }
-        if (valid & OBD_MD_FLNLINK) {
-                dst->o_nlink = lli->lli_st_nlink;
-                newvalid |= OBD_MD_FLNLINK;
-        }
         if (valid & OBD_MD_FLGENER) {
                 dst->o_generation = lli->lli_st_generation;
                 newvalid |= OBD_MD_FLGENER;
         }
-        if (valid & OBD_MD_FLRDEV) {
-                dst->o_rdev = (__u32)kdev_t_to_nr(lli->lli_st_rdev);
-                newvalid |= OBD_MD_FLRDEV;
+        if (valid & OBD_MD_FLFID) {
+                dst->o_fid = st->st_ino;
+                newvalid |= OBD_MD_FLFID;
         }
 
         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 obdo oa;
-        obd_flag refresh_valid;
+        struct lov_stripe_md *lsm = lli->lli_smd;
+        struct obd_info oinfo = { { { 0 } } };
         int rc;
         ENTRY;
 
         LASSERT(lsm);
-        LASSERT(lli);
 
-        memset(&oa, 0, sizeof 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_md = lsm;
+        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, &oa, lsm, set);
+                rc = obd_getattr_async(llu_i2obdexp(inode), &oinfo, set);
                 if (rc == 0)
                         rc = ptlrpc_set_wait(set);
                 ptlrpc_set_destroy(set);
@@ -283,44 +381,39 @@ 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;
-
-        /* We set this flag in commit write as we extend the file size.  When
-         * the bit is set and the lock is canceled that covers the file size,
-         * we clear the bit.  This is enough to protect the window where our
-         * local size extension is needed for writeback.  However, it relies on
-         * behaviour that won't be true in the near future.  This assumes that
-         * all getattr callers get extent locks, which they currnetly do.  It
-         * also assumes that we only send discarding asts for {0,eof} truncates
-         * as is currently the case.  This will have to be replaced by the
-         * proper eoc communication between clients and the ost, which is on
-         * its way. */
-        if (test_bit(LLI_F_PREFER_EXTENDED_SIZE, &lli->lli_flags)) {
-                if (oa.o_size < lli->lli_st_size)
-                        refresh_valid &= ~OBD_MD_FLSIZE;
-                else 
-                        clear_bit(LLI_F_PREFER_EXTENDED_SIZE, &lli->lli_flags);
-        }
-
-        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;
 
-/*
-        if (inode->i_blksize < PAGE_CACHE_SIZE)
-                inode->i_blksize = PAGE_CACHE_SIZE;
-
-        CDEBUG(D_INODE, "objid "LPX64" size %Lu, blocks %lu, blksize %lu\n",
-               lsm->lsm_object_id, inode->i_size, inode->i_blocks,
-               inode->i_blksize);
-*/
+        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 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(),
+        };
 
         OBD_ALLOC(lli, sizeof(*lli));
         if (!lli)
@@ -336,96 +429,34 @@ static struct inode* llu_new_inode(struct filesys *fs,
 
         lli->lli_sysio_fid.fid_data = &lli->lli_fid;
         lli->lli_sysio_fid.fid_len = sizeof(lli->lli_fid);
-
-        memcpy(&lli->lli_fid, fid, sizeof(*fid));
+        lli->lli_fid = *fid;
 
         /* file identifier is needed by functions like _sysio_i_find() */
-       inode = _sysio_i_new(fs, &lli->lli_sysio_fid,
-#ifndef AUTOMOUNT_FILE_NAME
-                            fid->f_type & S_IFMT,
-#else
-                            fid->f_type, /* all of the bits! */
-#endif
-                             0, 0,
-                            &llu_inode_ops, lli);
+        inode = _sysio_i_new(fs, &lli->lli_sysio_fid,
+                             &st, 0, &llu_inode_ops, lli);
 
-       if (!inode)
-               OBD_FREE(lli, sizeof(*lli));
+        if (!inode)
+                OBD_FREE(lli, sizeof(*lli));
 
         return inode;
 }
 
-#if 0
-static int ll_intent_to_lock_mode(struct lookup_intent *it)
-{
-        /* CREAT needs to be tested before open (both could be set) */
-        if (it->it_op & IT_CREAT)
-                return LCK_PW;
-        else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP))
-                return LCK_PR;
-
-        LBUG();
-        RETURN(-EINVAL);
-}
-#endif
-
-#if 0
-int ll_it_open_error(int phase, struct lookup_intent *it)
-{
-        if (it_disposition(it, DISP_OPEN_OPEN)) {
-                if (phase == DISP_OPEN_OPEN)
-                        return it->d.lustre.it_status;
-                else
-                        return 0;
-        }
-
-        if (it_disposition(it, DISP_OPEN_CREATE)) {
-                if (phase == DISP_OPEN_CREATE)
-                        return it->d.lustre.it_status;
-                else
-                        return 0;
-        }
-
-        if (it_disposition(it, DISP_LOOKUP_EXECD)) {
-                if (phase == DISP_LOOKUP_EXECD)
-                        return it->d.lustre.it_status;
-                else
-                        return 0;
-        }
-        CERROR("it disp: %X, status: %d\n", it->d.lustre.it_disposition, it->d.lustre.it_status);
-        LBUG();
-        return 0;
-}
-#endif
-
-static int llu_have_md_lock(struct inode *inode)
+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] = lli->lli_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;
-        if (ldlm_lock_match(obddev->obd_namespace, flags, &res_id, LDLM_PLAIN,
-                            NULL, 0, LCK_PR, &lockh)) {
-                ldlm_lock_decref(&lockh, LCK_PR);
-                RETURN(1);
-        }
-
-        if (ldlm_lock_match(obddev->obd_namespace, flags, &res_id, LDLM_PLAIN,
-                            NULL, 0, LCK_PW, &lockh)) {
-                ldlm_lock_decref(&lockh, LCK_PW);
+        flags = LDLM_FL_BLOCK_GRANTED | LDLM_FL_CBPENDING | LDLM_FL_TEST_LOCK;
+        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);
@@ -434,7 +465,7 @@ static int llu_have_md_lock(struct inode *inode)
 static int llu_inode_revalidate(struct inode *inode)
 {
         struct llu_inode_info *lli = llu_i2info(inode);
-        struct lov_stripe_md *lsm = NULL;
+        struct intnl_stat *st = llu_i2stat(inode);
         ENTRY;
 
         if (!inode) {
@@ -442,27 +473,33 @@ static int llu_inode_revalidate(struct inode *inode)
                 RETURN(0);
         }
 
-        if (!llu_have_md_lock(inode)) {
+        if (!llu_have_md_lock(inode, MDS_INODELOCK_UPDATE)) {
                 struct lustre_md md;
                 struct ptlrpc_request *req = NULL;
                 struct llu_sb_info *sbi = llu_i2sbi(inode);
-                struct ll_fid fid;
-                unsigned long valid = 0;
+                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(lli->lli_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 %lu\n", rc, lli->lli_st_ino);
+                        CERROR("failure %d inode %llu\n", rc,
+                               (long long)st->st_ino);
                         RETURN(-abs(rc));
                 }
-                rc = mdc_req2lustre_md(req, 0, 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) &&
@@ -479,57 +516,28 @@ 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);
-
-        /*
-         * unfortunately stat comes in through revalidate and we don't
-         * differentiate this use from initial instantiation.  we're
-         * also being wildly conservative and flushing write caches
-         * so that stat really returns the proper size.
-         */
-        {
-                struct ldlm_extent extent = {0, OBD_OBJECT_EOF};
-                struct lustre_handle lockh = {0};
-                ldlm_error_t err;
-
-                err = llu_extent_lock(NULL, inode, lsm, LCK_PR, &extent, &lockh);
-                if (err != ELDLM_OK)
-                        RETURN(err);
-
-                llu_extent_unlock(NULL, inode, lsm, LCK_PR, &lockh);
         }
-        RETURN(0);
+
+        /* ll_glimpse_size will prefer locally cached writes if they extend
+         * the file */
+        RETURN(cl_glimpse_size(inode));
 }
 
 static void copy_stat_buf(struct inode *ino, struct intnl_stat *b)
 {
-        struct llu_inode_info *lli = llu_i2info(ino);
-
-        b->st_dev = lli->lli_st_dev;
-        b->st_ino = lli->lli_st_ino;
-        b->st_mode = lli->lli_st_mode;
-        b->st_nlink = lli->lli_st_nlink;
-        b->st_uid = lli->lli_st_uid;
-        b->st_gid = lli->lli_st_gid;
-        b->st_rdev = lli->lli_st_rdev;
-        b->st_size = lli->lli_st_size;
-        b->st_blksize = lli->lli_st_blksize;
-        b->st_blocks = lli->lli_st_blocks;
-        b->st_atime = lli->lli_st_atime;
-        b->st_mtime = lli->lli_st_mtime;
-        b->st_ctime = lli->lli_st_ctime;
+        *b = *llu_i2stat(ino);
 }
 
 static int llu_iop_getattr(struct pnode *pno,
@@ -539,6 +547,8 @@ static int llu_iop_getattr(struct pnode *pno,
         int rc;
         ENTRY;
 
+        liblustre_wait_event(0);
+
         if (!ino) {
                 LASSERT(pno);
                 LASSERT(pno->p_base->pb_ino);
@@ -553,50 +563,47 @@ static int llu_iop_getattr(struct pnode *pno,
         rc = llu_inode_revalidate(ino);
         if (!rc) {
                 copy_stat_buf(ino, b);
-
-                if (llu_i2info(ino)->lli_it) {
-                        struct lookup_intent *it;
-
-                        LL_GET_INTENT(ino, it);
-                        it->it_op_release(it);
-                        OBD_FREE(it, sizeof(*it));
-                }
+                LASSERT(!llu_i2info(ino)->lli_it);
         }
 
+        liblustre_wait_event(0);
         RETURN(rc);
 }
 
 static int null_if_equal(struct ldlm_lock *lock, void *data)
 {
-        if (data == lock->l_ast_data)
+        if (data == lock->l_ast_data) {
                 lock->l_ast_data = NULL;
 
-        if (lock->l_req_mode != lock->l_granted_mode)
-                return LDLM_ITER_STOP;
+                if (lock->l_req_mode != lock->l_granted_mode)
+                        LDLM_ERROR(lock,"clearing inode with ungranted lock\n");
+        }
 
         return LDLM_ITER_CONTINUE;
 }
 
 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;
 
-        CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%lu(%p)\n", lli->lli_st_ino,
-               lli->lli_st_generation, inode);
+        CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu/%lu(%p)\n",
+               (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;
         }
 
@@ -614,6 +621,7 @@ void llu_iop_gone(struct inode *inode)
         struct llu_inode_info *lli = llu_i2info(inode);
         ENTRY;
 
+        liblustre_wait_event(0);
         llu_clear_inode(inode);
 
         OBD_FREE(lli, sizeof(*lli));
@@ -623,35 +631,110 @@ void llu_iop_gone(struct inode *inode)
 static int inode_setattr(struct inode * inode, struct iattr * attr)
 {
         unsigned int ia_valid = attr->ia_valid;
-        struct llu_inode_info *lli = llu_i2info(inode);
+        struct intnl_stat *st = llu_i2stat(inode);
         int error = 0;
 
-        if (ia_valid & ATTR_SIZE) {
-                error = llu_vmtruncate(inode, attr->ia_size);
-                if (error)
-                        goto out;
-        }
+        /*
+         * inode_setattr() is only ever invoked with ATTR_SIZE (by
+         * llu_setattr_raw()) when file has no bodies. Check this.
+         */
+        LASSERT(ergo(ia_valid & ATTR_SIZE, llu_i2info(inode)->lli_smd == NULL));
 
+        if (ia_valid & ATTR_SIZE)
+                st->st_size = attr->ia_size;
         if (ia_valid & ATTR_UID)
-                lli->lli_st_uid = attr->ia_uid;
+                st->st_uid = attr->ia_uid;
         if (ia_valid & ATTR_GID)
-                lli->lli_st_gid = attr->ia_gid;
+                st->st_gid = attr->ia_gid;
         if (ia_valid & ATTR_ATIME)
-                lli->lli_st_atime = attr->ia_atime;
+                st->st_atime = attr->ia_atime;
         if (ia_valid & ATTR_MTIME)
-                lli->lli_st_mtime = attr->ia_mtime;
+                st->st_mtime = attr->ia_mtime;
         if (ia_valid & ATTR_CTIME)
-                lli->lli_st_ctime = attr->ia_ctime;
+                st->st_ctime = attr->ia_ctime;
         if (ia_valid & ATTR_MODE) {
-                lli->lli_st_mode = attr->ia_mode;
-                if (!in_group_p(lli->lli_st_gid) && !capable(CAP_FSETID))
-                        lli->lli_st_mode &= ~S_ISGID;
+                st->st_mode = attr->ia_mode;
+                if (!cfs_curproc_is_in_groups(st->st_gid) &&
+                    !cfs_capable(CFS_CAP_FSETID))
+                        st->st_mode &= ~S_ISGID;
         }
         /* mark_inode_dirty(inode); */
-out:
         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.
@@ -665,25 +748,23 @@ out:
  * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
  * at the same time.
  */
-#define OST_ATTR (ATTR_MTIME | ATTR_MTIME_SET | ATTR_CTIME | \
-                  ATTR_ATIME | ATTR_ATIME_SET | ATTR_SIZE)
 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 llu_inode_info *lli = llu_i2info(inode);
-        struct ptlrpc_request *request = NULL;
-        struct mdc_op_data op_data;
+        struct intnl_stat *st = llu_i2stat(inode);
         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=%lu\n", lli->lli_st_ino);
+        CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu\n", (long long)st->st_ino);
 
         if (ia_valid & ATTR_SIZE) {
                 if (attr->ia_size > ll_file_maxbytes(inode)) {
                         CDEBUG(D_INODE, "file too large %llu > "LPU64"\n",
-                               attr->ia_size, ll_file_maxbytes(inode));
+                               (long long)attr->ia_size,
+                               ll_file_maxbytes(inode));
                         RETURN(-EFBIG);
                 }
 
@@ -692,53 +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_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 ? ~(OST_ATTR | 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, 0, 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);
-                }
-                llu_update_inode(inode, md.body, md.lsm);
-                ptlrpc_req_finished(request);
 
-                if (!md.lsm || !S_ISREG(lli->lli_st_mode)) {
+                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
@@ -748,81 +823,41 @@ int llu_setattr_raw(struct inode *inode, struct iattr *attr)
                 if (ia_valid & (ATTR_MTIME | ATTR_ATIME)) {
                         /* from sys_utime() */
                         if (!(ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET))) {
-                                if (current->fsuid != lli->lli_st_uid &&
-                                    (rc = ll_permission(inode, 0/*MAY_WRITE*/, NULL)) != 0)
+                                if (current->fsuid != st->st_uid &&
+                                    (rc = ll_permission(inode, MAY_WRITE)) != 0)
                                         RETURN(rc);
                         } else {
-                               /* from inode_change_ok() */
-                               if (current->fsuid != lli->lli_st_uid &&
-                                   !capable(CAP_FOWNER))
-                                       RETURN(-EPERM);
+                                /* from inode_change_ok() */
+                                if (current->fsuid != st->st_uid &&
+                                    !cfs_capable(CFS_CAP_FOWNER))
+                                        RETURN(-EPERM);
                         }
                 }
 
-                /* Won't invoke vmtruncate, as we already cleared ATTR_SIZE */
+
+                /* Won't invoke llu_vmtruncate(), as we already cleared
+                 * ATTR_SIZE */
                 inode_setattr(inode, attr);
         }
 
-        if (ia_valid & ATTR_SIZE) {
-                struct ldlm_extent extent = { .start = attr->ia_size,
-                                              .end = OBD_OBJECT_EOF };
-                struct lustre_handle lockh = { 0 };
-                int err, ast_flags = 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. */
-
-                /* Writeback uses inode->i_size to determine how far out
-                 * its cached pages go.  ll_truncate gets a PW lock, canceling
-                 * our lock, _after_ it has updated i_size.  this can confuse
-                 *
-                 * We really need to get our PW lock before we change
-                 * inode->i_size.  If we don't we can race with other
-                 * i_size updaters on our node, like ll_file_read.  We
-                 * can also race with i_size propogation to other
-                 * nodes through dirtying and writeback of final cached
-                 * pages.  This last one is especially bad for racing
-                 * o_append users on other nodes. */
-                if (extent.start == 0)
-                        ast_flags = LDLM_AST_DISCARD_DATA;
-                rc = llu_extent_lock_no_validate(NULL, inode, lsm, LCK_PW,
-                                                 &extent, &lockh, ast_flags);
-                if (rc != ELDLM_OK) {
-                        if (rc > 0)
-                                RETURN(-ENOLCK);
-                        RETURN(rc);
-                }
-
-                rc = llu_vmtruncate(inode, attr->ia_size);
-                if (rc == 0)
-                        set_bit(LLI_F_HAVE_OST_SIZE_LOCK,
-                                &llu_i2info(inode)->lli_flags);
-
-                /* unlock now as we don't mind others file lockers racing with
-                 * the mds updates below? */
-                err = llu_extent_unlock(NULL, inode, lsm, LCK_PW, &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 obdo oa;
-
-                CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
-                       lli->lli_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);
-                rc = obd_setattr(sbi->ll_osc_exp, &oa, lsm, NULL);
-                if (rc)
-                        CERROR("obd_setattr 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;
 }
 
-/* FIXME here we simply act as a thin layer to glue it with
+/* here we simply act as a thin layer to glue it with
  * llu_setattr_raw(), which is copy from kernel
  */
 static int llu_iop_setattr(struct pnode *pno,
@@ -831,8 +866,14 @@ static int llu_iop_setattr(struct pnode *pno,
                            struct intnl_stat *stbuf)
 {
         struct iattr iattr;
+        int rc;
         ENTRY;
 
+        liblustre_wait_event(0);
+
+        LASSERT(!(mask & ~(SETATTR_MTIME | SETATTR_ATIME |
+                           SETATTR_UID | SETATTR_GID |
+                           SETATTR_LEN | SETATTR_MODE)));
         memset(&iattr, 0, sizeof(iattr));
 
         if (mask & SETATTR_MODE) {
@@ -841,11 +882,11 @@ static int llu_iop_setattr(struct pnode *pno,
         }
         if (mask & SETATTR_MTIME) {
                 iattr.ia_mtime = stbuf->st_mtime;
-                iattr.ia_valid |= ATTR_MTIME;
+                iattr.ia_valid |= ATTR_MTIME | ATTR_MTIME_SET;
         }
         if (mask & SETATTR_ATIME) {
                 iattr.ia_atime = stbuf->st_atime;
-                iattr.ia_valid |= ATTR_ATIME;
+                iattr.ia_valid |= ATTR_ATIME | ATTR_ATIME_SET;
         }
         if (mask & SETATTR_UID) {
                 iattr.ia_uid = stbuf->st_uid;
@@ -856,13 +897,16 @@ static int llu_iop_setattr(struct pnode *pno,
                 iattr.ia_valid |= ATTR_GID;
         }
         if (mask & SETATTR_LEN) {
-                iattr.ia_size = stbuf->st_size; /* FIXME signed expansion problem */
+                iattr.ia_size = stbuf->st_size; /* XXX signed expansion problem */
                 iattr.ia_valid |= ATTR_SIZE;
         }
 
-        iattr.ia_valid |= ATTR_RAW;
+        iattr.ia_valid |= ATTR_RAW | ATTR_CTIME;
+        iattr.ia_ctime = CFS_CURRENT_TIME;
 
-        RETURN(llu_setattr_raw(ino, &iattr));
+        rc = llu_setattr_raw(ino, &iattr);
+        liblustre_wait_idle();
+        RETURN(rc);
 }
 
 #define EXT2_LINK_MAX           32000
@@ -875,18 +919,22 @@ 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;
 
-        if (llu_i2info(dir)->lli_st_nlink >= EXT2_LINK_MAX)
+        liblustre_wait_event(0);
+        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, 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);
 }
 
@@ -896,12 +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;
-        int rc, symlen = lli->lli_st_size + 1;
+        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;
@@ -909,37 +959,38 @@ 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 %lu: rc = %d\n", lli->lli_st_ino, rc);
+                CERROR("inode %llu: rc = %d\n", (long long)st->st_ino, rc);
                 RETURN(rc);
         }
 
-        body = lustre_msg_buf ((*request)->rq_repmsg, 0, sizeof (*body));
-        LASSERT (body != NULL);
-        LASSERT_REPSWABBED (*request, 0);
+        body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
+        LASSERT(body != NULL);
 
         if ((body->valid & OBD_MD_LINKNAME) == 0) {
                 CERROR ("OBD_MD_LINKNAME not set on reply\n");
                 GOTO (failed, rc = -EPROTO);
         }
-        
-        LASSERT (symlen != 0);
+
+        LASSERT(symlen != 0);
         if (body->eadatasize != symlen) {
-                CERROR ("inode %lu: symlink length %d not expected %d\n",
-                        lli->lli_st_ino, body->eadatasize - 1, symlen - 1);
-                GOTO (failed, rc = -EPROTO);
+                CERROR("inode %llu: symlink length %d not expected %d\n",
+                       (long long)st->st_ino, body->eadatasize - 1, symlen - 1);
+                GOTO(failed, rc = -EPROTO);
         }
 
-        *symname = lustre_msg_buf ((*request)->rq_repmsg, 1, symlen);
+        *symname = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_MD);
         if (*symname == NULL ||
-            strnlen (*symname, symlen) != symlen - 1) {
+            strnlen(*symname, symlen) != symlen - 1) {
                 /* not full/NULL terminated */
-                CERROR ("inode %lu: symlink not NULL terminated string"
-                        "of length %d\n", lli->lli_st_ino, symlen - 1);
-                GOTO (failed, rc = -EPROTO);
+                CERROR("inode %llu: symlink not NULL terminated string"
+                       "of length %d\n", (long long)st->st_ino, symlen - 1);
+                GOTO(failed, rc = -EPROTO);
         }
 
         OBD_ALLOC(lli->lli_symlink_name, symlen);
@@ -962,22 +1013,18 @@ static int llu_iop_readlink(struct pnode *pno, char *data, size_t bufsize)
         int rc;
         ENTRY;
 
-        /* on symlinks lli_open_sem protects lli_symlink_name allocation/data */
-/*
-        down(&lli->lli_open_sem);
-*/
+        liblustre_wait_event(0);
         rc = llu_readlink_internal(inode, &request, &symname);
         if (rc)
                 GOTO(out, rc);
 
         LASSERT(symname);
         strncpy(data, symname, bufsize);
+        rc = strlen(symname);
 
         ptlrpc_req_finished(request);
  out:
-/*
-        up(&lli->lli_open_sem);
-*/
+        liblustre_wait_event(0);
         RETURN(rc);
 }
 
@@ -988,18 +1035,18 @@ 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;
 
-        CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu\n",
-               pno->p_base->pb_name.name, llu_i2info(dir)->lli_st_ino);
+        liblustre_wait_event(0);
+        CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%llu\n",
+               (int)pno->p_base->pb_name.len, pno->p_base->pb_name.name,
+               (long long)llu_i2stat(dir)->st_ino);
 
-        if (llu_i2info(dir)->lli_st_nlink >= EXT2_LINK_MAX)
+        if (llu_i2stat(dir)->st_nlink >= EXT2_LINK_MAX)
                 RETURN(err);
 
-        mode &= ~current->fs->umask;
-
         switch (mode & S_IFMT) {
         case 0:
         case S_IFREG:
@@ -1008,12 +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, 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:
@@ -1022,83 +1071,10 @@ static int llu_iop_mknod_raw(struct pnode *pno,
         default:
                 err = -EINVAL;
         }
+        liblustre_wait_event(0);
         RETURN(err);
 }
 
-#if 0
-static int llu_mdc_unlink(struct inode *dir, struct inode *child, __u32 mode,
-                         const char *name, int len)
-{
-        struct ptlrpc_request *request = NULL;
-        struct mds_body *body;
-        struct lov_mds_md *eadata;
-        struct lov_stripe_md *lsm = NULL;
-        struct obd_trans_info oti = { 0 };
-        struct mdc_op_data op_data;
-        struct obdo *oa;
-        int rc;
-        ENTRY;
-
-        llu_prepare_mdc_op_data(&op_data, dir, child, name, len, mode);
-        rc = mdc_unlink(&llu_i2sbi(dir)->ll_mdc_conn, &op_data, &request);
-        if (rc)
-                GOTO(out, rc);
-        /* req is swabbed so this is safe */
-        body = lustre_msg_buf(request->rq_repmsg, 0, sizeof(*body));
-
-        if (!(body->valid & OBD_MD_FLEASIZE))
-                GOTO(out, rc = 0);
-
-        if (body->eadatasize == 0) {
-                CERROR("OBD_MD_FLEASIZE set but eadatasize zero\n");
-                GOTO(out, rc = -EPROTO);
-        }
-
-        /* The MDS sent back the EA because we unlinked the last reference
-         * to this file. Use this EA to unlink the objects on the OST.
-         * It's opaque so we don't swab here; we leave it to obd_unpackmd() to
-         * check it is complete and sensible. */
-        eadata = lustre_swab_repbuf(request, 1, body->eadatasize, NULL);
-        LASSERT(eadata != NULL);
-        if (eadata == NULL) {
-                CERROR("Can't unpack MDS EA data\n");
-                GOTO(out, rc = -EPROTO);
-        }
-
-        rc = obd_unpackmd(llu_i2obdconn(dir), &lsm, eadata, body->eadatasize);
-        if (rc < 0) {
-                CERROR("obd_unpackmd: %d\n", rc);
-                GOTO(out, rc);
-        }
-        LASSERT(rc >= sizeof(*lsm));
-
-        oa = obdo_alloc();
-        if (oa == NULL)
-                GOTO(out_free_memmd, rc = -ENOMEM);
-
-        oa->o_id = lsm->lsm_object_id;
-        oa->o_mode = body->mode & S_IFMT;
-        oa->o_valid = OBD_MD_FLID | OBD_MD_FLTYPE;
-
-        if (body->valid & OBD_MD_FLCOOKIE) {
-                oa->o_valid |= OBD_MD_FLCOOKIE;
-                oti.oti_logcookies = lustre_msg_buf(request->rq_repmsg, 3,
-                                                    body->eadatasize);
-        }
-
-        rc = obd_destroy(llu_i2obdconn(dir), oa, lsm, &oti);
-        obdo_free(oa);
-        if (rc)
-                CERROR("obd destroy objid 0x"LPX64" error %d\n",
-                       lsm->lsm_object_id, rc);
- out_free_memmd:
-        obd_free_memmd(llu_i2obdconn(dir), &lsm);
- out:
-        ptlrpc_req_finished(request);
-        return rc;
-}
-#endif
-
 static int llu_iop_link_raw(struct pnode *old, struct pnode *new)
 {
         struct inode *src = old->p_base->pb_ino;
@@ -1106,20 +1082,26 @@ 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;
 
         LASSERT(src);
         LASSERT(dir);
 
-        llu_prepare_mdc_op_data(&op_data, src, dir, name, namelen, 0);
-        rc = mdc_link(llu_i2sbi(src)->ll_mdc_exp, &op_data, &request);
+        liblustre_wait_event(0);
+        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);
 
         RETURN(rc);
 }
 
+/*
+ * libsysio will clear the inode immediately after return
+ */
 static int llu_iop_unlink_raw(struct pnode *pno)
 {
         struct inode *dir = pno->p_base->pb_parent->pb_ino;
@@ -1128,85 +1110,75 @@ 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);
 
-        llu_prepare_mdc_op_data(&op_data, dir, NULL, name, len, 0);
-        rc = mdc_unlink(llu_i2sbi(dir)->ll_mdc_exp, &op_data, &request);
-        if (!rc) {
+        liblustre_wait_event(0);
+        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);
-
-                llu_i2info(target)->lli_stale_flag = 1;
-                unhook_stale_inode(pno);
-        }
-
         ptlrpc_req_finished(request);
+        liblustre_wait_idle();
+
         RETURN(rc);
 }
 
-/* FIXME
- * following cases need to be considered later:
- * - rename an opened file/dir
- * - an opened file be removed in rename
- * - rename to remove and hardlink (?opened)
- */
 static int llu_iop_rename_raw(struct pnode *old, struct pnode *new)
 {
         struct inode *src = old->p_parent->p_base->pb_ino;
         struct inode *tgt = new->p_parent->p_base->pb_ino;
-        struct inode *tgtinode = new->p_base->pb_ino;
         const char *oldname = old->p_base->pb_name.name;
         int oldnamelen = old->p_base->pb_name.len;
         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;
 
         LASSERT(src);
         LASSERT(tgt);
 
-        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);
+        liblustre_wait_event(0);
+        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);
-
-                if (tgtinode) {
-                        llu_i2info(tgtinode)->lli_stale_flag = 1;
-                        unhook_stale_inode(new);
-                }
         }
 
         ptlrpc_req_finished(request);
+        liblustre_wait_idle();
 
         RETURN(rc);
 }
 
-#if 0
+#ifdef _HAVE_STATVFS
 static int llu_statfs_internal(struct llu_sb_info *sbi,
-                               struct obd_statfs *osfs,
-                               unsigned long max_age)
+                               struct obd_statfs *osfs, __u64 max_age)
 {
         struct obd_statfs obd_osfs;
         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(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);
@@ -1233,7 +1205,7 @@ static int llu_statfs_internal(struct llu_sb_info *sbi,
         RETURN(rc);
 }
 
-static int llu_statfs(struct llu_sb_info *sbi, struct kstatfs *sfs)
+static int llu_statfs(struct llu_sb_info *sbi, struct statfs *sfs)
 {
         struct obd_statfs osfs;
         int rc;
@@ -1243,7 +1215,7 @@ static int llu_statfs(struct llu_sb_info *sbi, struct kstatfs *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, jiffies - 1);
+        rc = llu_statfs_internal(sbi, &osfs, cfs_time_current_64() - CFS_HZ);
         if (rc)
                 return rc;
 
@@ -1274,6 +1246,8 @@ static int llu_iop_statvfs(struct pnode *pno,
         int rc;
         ENTRY;
 
+        liblustre_wait_event(0);
+
 #ifndef __CYGWIN__
         LASSERT(pno->p_base->pb_ino);
         rc = llu_statfs(llu_i2sbi(pno->p_base->pb_ino), &fs);
@@ -1294,9 +1268,10 @@ static int llu_iop_statvfs(struct pnode *pno,
         buf->f_namemax = fs.f_namelen;
 #endif
 
+        liblustre_wait_event(0);
         RETURN(0);
 }
-#endif
+#endif /* _HAVE_STATVFS */
 
 static int llu_iop_mkdir_raw(struct pnode *pno, mode_t mode)
 {
@@ -1305,21 +1280,26 @@ static int llu_iop_mkdir_raw(struct pnode *pno, mode_t mode)
         const char *name = qstr->name;
         int len = qstr->len;
         struct ptlrpc_request *request = NULL;
-        struct llu_inode_info *lli = llu_i2info(dir);
-        struct mdc_op_data op_data;
+        struct intnl_stat *st = llu_i2stat(dir);
+        struct md_op_data op_data = {{ 0 }};
         int err = -EMLINK;
         ENTRY;
-        CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%lu(%p)\n",
-               name, lli->lli_st_ino, lli->lli_st_generation, dir);
 
-        if (lli->lli_st_nlink >= EXT2_LINK_MAX)
+        liblustre_wait_event(0);
+        CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%llu/%lu(%p)\n", len, name,
+               (long long)st->st_ino, llu_i2info(dir)->lli_st_generation, dir);
+
+        if (st->st_nlink >= EXT2_LINK_MAX)
                 RETURN(err);
 
-        mode = (mode & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
-        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,
-                         current->fsuid, current->fsgid, 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);
 }
 
@@ -1330,37 +1310,542 @@ 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 llu_inode_info *lli = llu_i2info(dir);
+        struct md_op_data op_data = {{ 0 }};
         int rc;
         ENTRY;
-        CDEBUG(D_VFSTRACE, "VFS Op:name=%s,dir=%lu/%lu(%p)\n",
-               name, lli->lli_st_ino, lli->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);
+        liblustre_wait_event(0);
+        CDEBUG(D_VFSTRACE, "VFS Op:name=%.*s,dir=%llu/%lu(%p)\n", len, name,
+               (long long)llu_i2stat(dir)->st_ino,
+               llu_i2info(dir)->lli_st_generation, dir);
+
+        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);
 
-        /* libsysio: remove the pnode right away */
-        if (!rc) {
-                llu_i2info(pno->p_base->pb_ino)->lli_stale_flag = 1;
-                unhook_stale_inode(pno);
+        liblustre_wait_event(0);
+        RETURN(rc);
+}
+
+#ifdef O_DIRECT
+#define FCNTL_FLMASK (O_APPEND|O_NONBLOCK|O_ASYNC|O_DIRECT)
+#else
+#define FCNTL_FLMASK (O_APPEND|O_NONBLOCK|O_ASYNC)
+#endif
+#define FCNTL_FLMASK_INVALID (O_NONBLOCK|O_ASYNC)
+
+/* refer to ll_file_flock() for details */
+static int llu_file_flock(struct inode *ino,
+                          int cmd,
+                          struct file_lock *file_lock)
+{
+        struct llu_inode_info *lli = llu_i2info(ino);
+        struct intnl_stat *st = llu_i2stat(ino);
+        struct ldlm_res_id res_id =
+                { .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;
+        int flags = 0;
+        int rc;
+
+        CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu file_lock=%p\n",
+               (unsigned long long)st->st_ino, file_lock);
+
+        flock.l_flock.pid = file_lock->fl_pid;
+        flock.l_flock.start = file_lock->fl_start;
+        flock.l_flock.end = file_lock->fl_end;
+
+        switch (file_lock->fl_type) {
+        case F_RDLCK:
+                einfo.ei_mode = LCK_PR;
+                break;
+        case F_UNLCK:
+                einfo.ei_mode = LCK_NL;
+                break;
+        case F_WRLCK:
+                einfo.ei_mode = LCK_PW;
+                break;
+        default:
+                CERROR("unknown fcntl lock type: %d\n", file_lock->fl_type);
+                LBUG();
         }
 
+        switch (cmd) {
+        case F_SETLKW:
+#ifdef F_SETLKW64
+#if F_SETLKW64 != F_SETLKW
+        case F_SETLKW64:
+#endif
+#endif
+                flags = 0;
+                break;
+        case F_SETLK:
+#ifdef F_SETLK64
+#if F_SETLK64 != F_SETLK
+        case F_SETLK64:
+#endif
+#endif
+                flags = LDLM_FL_BLOCK_NOWAIT;
+                break;
+        case F_GETLK:
+#ifdef F_GETLK64
+#if F_GETLK64 != F_GETLK
+        case F_GETLK64:
+#endif
+#endif
+                flags = LDLM_FL_TEST_LOCK;
+                file_lock->fl_type = einfo.ei_mode;
+                break;
+        default:
+                CERROR("unknown fcntl cmd: %d\n", cmd);
+                LBUG();
+        }
+
+        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;
+
+                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);
 }
 
-static int llu_iop_fcntl(struct inode *ino, int cmd, va_list ap)
+static int assign_type(struct file_lock *fl, int type)
+{
+        switch (type) {
+        case F_RDLCK:
+        case F_WRLCK:
+        case F_UNLCK:
+                fl->fl_type = type;
+                return 0;
+        default:
+                return -EINVAL;
+        }
+}
+
+static int flock_to_posix_lock(struct inode *ino,
+                               struct file_lock *fl,
+                               struct flock *l)
 {
-        CERROR("liblustre did not support fcntl\n");
-        return -ENOSYS;
+        switch (l->l_whence) {
+        /* XXX: only SEEK_SET is supported in lustre */
+        case SEEK_SET:
+                fl->fl_start = 0;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        fl->fl_end = l->l_len - 1;
+        if (l->l_len < 0)
+                return -EINVAL;
+        if (l->l_len == 0)
+                fl->fl_end = OFFSET_MAX;
+
+        fl->fl_pid = getpid();
+        fl->fl_flags = FL_POSIX;
+        fl->fl_notify = NULL;
+        fl->fl_insert = NULL;
+        fl->fl_remove = NULL;
+        /* XXX: these fields can't be filled with suitable values,
+                but I think lustre doesn't use them.
+         */
+        fl->fl_owner = NULL;
+        fl->fl_file = NULL;
+
+        return assign_type(fl, l->l_type);
+}
+
+static int llu_fcntl_getlk(struct inode *ino, struct flock *flock)
+{
+        struct file_lock fl;
+        int error;
+
+        error = EINVAL;
+        if ((flock->l_type != F_RDLCK) && (flock->l_type != F_WRLCK))
+                goto out;
+
+        error = flock_to_posix_lock(ino, &fl, flock);
+        if (error)
+                goto out;
+
+        error = llu_file_flock(ino, F_GETLK, &fl);
+        if (error)
+                goto out;
+
+        flock->l_type = F_UNLCK;
+        if (fl.fl_type != F_UNLCK) {
+                flock->l_pid = fl.fl_pid;
+                flock->l_start = fl.fl_start;
+                flock->l_len = fl.fl_end == OFFSET_MAX ? 0:
+                        fl.fl_end - fl.fl_start + 1;
+                flock->l_whence = SEEK_SET;
+                flock->l_type = fl.fl_type;
+        }
+
+out:
+        return error;
+}
+
+static int llu_fcntl_setlk(struct inode *ino, int cmd, struct flock *flock)
+{
+        struct file_lock fl;
+        int flags = llu_i2info(ino)->lli_open_flags + 1;
+        int error;
+
+        error = flock_to_posix_lock(ino, &fl, flock);
+        if (error)
+                goto out;
+        if (cmd == F_SETLKW)
+                fl.fl_flags |= FL_SLEEP;
+
+        error = -EBADF;
+        switch (flock->l_type) {
+        case F_RDLCK:
+                if (!(flags & FMODE_READ))
+                        goto out;
+                break;
+        case F_WRLCK:
+                if (!(flags & FMODE_WRITE))
+                        goto out;
+                break;
+        case F_UNLCK:
+                break;
+        default:
+                error = -EINVAL;
+                goto out;
+        }
+
+        error = llu_file_flock(ino, cmd, &fl);
+        if (error)
+                goto out;
+
+out:
+        return error;
+}
+
+static int llu_iop_fcntl(struct inode *ino, int cmd, va_list ap, int *rtn)
+{
+        struct llu_inode_info *lli = llu_i2info(ino);
+        long flags;
+        struct flock *flock;
+        long err = 0;
+
+        liblustre_wait_event(0);
+        switch (cmd) {
+        case F_GETFL:
+                *rtn = lli->lli_open_flags;
+                break;
+        case F_SETFL:
+                flags = va_arg(ap, long);
+                flags &= FCNTL_FLMASK;
+                if (flags & FCNTL_FLMASK_INVALID) {
+                        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;
+                }
+                lli->lli_open_flags = (int)(flags & FCNTL_FLMASK) |
+                                      (lli->lli_open_flags & ~FCNTL_FLMASK);
+                *rtn = 0;
+                break;
+        case F_GETLK:
+#ifdef F_GETLK64
+#if F_GETLK64 != F_GETLK
+        case F_GETLK64:
+#endif
+#endif
+                flock = va_arg(ap, struct flock *);
+                err = llu_fcntl_getlk(ino, flock);
+                *rtn = err? -1: 0;
+                break;
+        case F_SETLK:
+#ifdef F_SETLKW64
+#if F_SETLKW64 != F_SETLKW
+        case F_SETLKW64:
+#endif
+#endif
+        case F_SETLKW:
+#ifdef F_SETLK64
+#if F_SETLK64 != F_SETLK
+        case F_SETLK64:
+#endif
+#endif
+                flock = va_arg(ap, struct flock *);
+                err = llu_fcntl_setlk(ino, cmd, flock);
+                *rtn = err? -1: 0;
+                break;
+        default:
+                CERROR("unsupported fcntl cmd %x\n", cmd);
+                *rtn = -ENOSYS;
+                err = ENOSYS;
+                break;
+        }
+
+        liblustre_wait_event(0);
+        return err;
+}
+
+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;
+        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);
+
+        rc = cl_get_grouplock(cl_i2info(inode)->lli_clob,
+                              arg, (lli->lli_open_flags & O_NONBLOCK),
+                              &grouplock);
+
+        if (rc)
+                RETURN(rc);
+
+        fd->fd_flags |= LL_FILE_GROUP_LOCKED;
+        fd->fd_grouplock = grouplock;
+
+        RETURN(0);
+}
+
+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 ccc_grouplock grouplock;
+        ENTRY;
+
+        if (!(fd->fd_flags & LL_FILE_GROUP_LOCKED))
+                RETURN(-EINVAL);
+
+        LASSERT(fd->fd_grouplock.cg_lock != NULL);
+
+        if (fd->fd_grouplock.cg_gid != arg)
+                RETURN(-EINVAL);
+
+        grouplock = fd->fd_grouplock;
+        memset(&fd->fd_grouplock, 0, sizeof(fd->fd_grouplock));
+        fd->fd_flags &= ~LL_FILE_GROUP_LOCKED;
+
+        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 ptlrpc_request *request = NULL;
+        struct md_op_data op_data = {{ 0 }};
+        struct lov_user_md lum, *lump = (struct lov_user_md *)arg;
+        int rc = 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]));
+        if (cfs_copy_from_user(&lum, lump, sizeof(lum)))
+                return(-EFAULT);
+
+        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);
+        }
+        }
+
+        /* swabbing is done in lov_setstripe() on server side */
+        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("md_setattr fails: rc = %d\n", rc);
+                return rc;
+        }
+        ptlrpc_req_finished(request);
+
+        return rc;
+}
+
+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 llu_inode_info *lli = llu_i2info(ino);
+        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 md_op_data data = {{ 0 }};
+        struct lustre_handle lockh;
+        int rc = 0;
+        ENTRY;
+
+        if (lli->lli_smd) {
+                CDEBUG(D_IOCTL, "stripe already exists for ino "DFID"\n",
+                       PFID(&lli->lli_fid));
+                return -EEXIST;
+        }
+
+        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 = 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);
+        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);
+        EXIT;
+
+out:
+        if (req != NULL)
+                ptlrpc_req_finished(req);
+        return rc;
+}
+
+static int llu_lov_file_setstripe(struct inode *ino, unsigned long arg)
+{
+        struct lov_user_md lum, *lump = (struct lov_user_md *)arg;
+        int rc;
+        int flags = FMODE_WRITE;
+        ENTRY;
+
+        LASSERT(sizeof(lum) == sizeof(*lump));
+        LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lump->lmm_objects[0]));
+        if (cfs_copy_from_user(&lum, lump, sizeof(lum)))
+                RETURN(-EFAULT);
+
+        rc = llu_lov_setstripe_ea_info(ino, flags, &lum, sizeof(lum));
+        RETURN(rc);
+}
+
+static int llu_lov_setstripe(struct inode *ino, unsigned long arg)
+{
+        struct intnl_stat *st = llu_i2stat(ino);
+        if (S_ISREG(st->st_mode))
+                return llu_lov_file_setstripe(ino, arg);
+        if (S_ISDIR(st->st_mode))
+                return llu_lov_dir_setstripe(ino, arg);
+
+        return -EINVAL;
+}
+
+static int llu_lov_getstripe(struct inode *ino, unsigned long arg)
+{
+        struct lov_stripe_md *lsm = llu_i2info(ino)->lli_smd;
+
+        if (!lsm)
+                RETURN(-ENODATA);
+
+        return obd_iocontrol(LL_IOC_LOV_GETSTRIPE, llu_i2obdexp(ino), 0, lsm,
+                            (void *)arg);
 }
 
 static int llu_iop_ioctl(struct inode *ino, unsigned long int request,
                          va_list ap)
 {
-        CERROR("liblustre did not support ioctl\n");
-        return -ENOSYS;
+        unsigned long arg;
+        int rc;
+
+        liblustre_wait_event(0);
+
+        switch (request) {
+        case LL_IOC_GROUP_LOCK:
+                arg = va_arg(ap, unsigned long);
+                rc = llu_get_grouplock(ino, arg);
+                break;
+        case LL_IOC_GROUP_UNLOCK:
+                arg = va_arg(ap, unsigned long);
+                rc = llu_put_grouplock(ino, arg);
+                break;
+        case LL_IOC_LOV_SETSTRIPE:
+                arg = va_arg(ap, unsigned long);
+                rc = llu_lov_setstripe(ino, arg);
+                break;
+        case LL_IOC_LOV_GETSTRIPE:
+                arg = va_arg(ap, unsigned long);
+                rc = llu_lov_getstripe(ino, arg);
+                break;
+        default:
+                CERROR("did not support ioctl cmd %lx\n", request);
+                rc = -ENOSYS;
+                break;
+        }
+
+        liblustre_wait_event(0);
+        return rc;
 }
 
 /*
@@ -1368,11 +1853,13 @@ static int llu_iop_ioctl(struct inode *ino, unsigned long int request,
  */
 static int llu_iop_sync(struct inode *inode)
 {
+        liblustre_wait_event(0);
         return 0;
 }
 
 static int llu_iop_datasync(struct inode *inode)
 {
+        liblustre_wait_event(0);
         return 0;
 }
 
@@ -1384,38 +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))
-                CERROR("invalide fields!\n");
+        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) {
-                if (llu_i2info(inode)->lli_st_generation ==
-                    md->body->generation) {
-                        llu_update_inode(inode, md->body, md->lsm);
-                        return inode;
-                } else
+                if (inode->i_zombie/* ||
+                    lli->lli_st_generation != md->body->generation*/) {
                         I_RELE(inode);
+                }
+                else {
+                        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,
@@ -1427,86 +1914,65 @@ 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, };
+        char ll_instance[sizeof(sbi) * 2 + 1];
         struct lustre_profile *lprof;
+        char *zconf_mgsnid, *zconf_profile;
         char *osc = NULL, *mdc = NULL;
-        int err = -EINVAL;
+        int async = 1, err = -EINVAL;
+        struct obd_connect_data ocd = {0,};
+        struct md_op_data op_data = {{0}};
 
         ENTRY;
 
+        if (ll_parse_mount_target(source,
+                                  &zconf_mgsnid,
+                                  &zconf_profile)) {
+                CERROR("mal-formed target %s\n", source);
+                RETURN(err);
+        }
+        if (!zconf_mgsnid || !zconf_profile) {
+                printf("Liblustre: invalid target %s\n", source);
+                RETURN(err);
+        }
         /* allocate & initialize sbi */
         OBD_ALLOC(sbi, sizeof(*sbi));
         if (!sbi)
                 RETURN(-ENOMEM);
 
-        INIT_LIST_HEAD(&sbi->ll_conn_chain);
-        generate_random_uuid(uuid);
+        CFS_INIT_LIST_HEAD(&sbi->ll_conn_chain);
+        ll_generate_random_uuid(uuid);
         class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
 
-        /* zeroconf */
-        if (g_zconf) {
-                struct config_llog_instance cfg;
-                int len;
-
-                if (!g_zconf_mdsname) {
-                        CERROR("no mds name\n");
-                        GOTO(out_free, err = -EINVAL);
-                }
+        /* generate a string unique to this super, let's try
+         the address of the super itself.*/
+        sprintf(ll_instance, "%p", sbi);
 
-                /* XXX */
-                /* generate a string unique to this super, let's try
-                 the address of the super itself.*/
-                len = (sizeof(sbi) * 2) + 1; 
-                OBD_ALLOC(sbi->ll_instance, len);
-                if (sbi->ll_instance == NULL) 
-                        GOTO(out_free, err = -ENOMEM);
-                sprintf(sbi->ll_instance, "%p", sbi);
-
-                cfg.cfg_instance = sbi->ll_instance;
-                cfg.cfg_uuid = sbi->ll_sb_uuid;
-                err = liblustre_process_log(&cfg);
-                if (err < 0) {
-                        CERROR("Unable to process log: %s\n", g_zconf_profile);
-
-                        GOTO(out_free, err);
-                }
-
-                lprof = class_get_profile(g_zconf_profile);
-                if (lprof == NULL) {
-                        CERROR("No profile found: %s\n", g_zconf_profile);
-                        GOTO(out_free, err = -EINVAL);
-                }
-                if (osc)
-                        OBD_FREE(osc, strlen(osc) + 1);
-                OBD_ALLOC(osc, strlen(lprof->lp_osc) + 
-                          strlen(sbi->ll_instance) + 2);
-                sprintf(osc, "%s-%s", lprof->lp_osc, sbi->ll_instance);
-
-                if (mdc)
-                        OBD_FREE(mdc, strlen(mdc) + 1);
-                OBD_ALLOC(mdc, strlen(lprof->lp_mdc) + 
-                          strlen(sbi->ll_instance) + 2);
-                sprintf(mdc, "%s-%s", lprof->lp_mdc, sbi->ll_instance);
-        } else {
-                /* setup from dump_file */
-                if (list_empty(&lustre_profile_list)) {
-                        CERROR("no profile\n");
-                        GOTO(out_free, err = -EINVAL);
-                }
+        /* retrive & parse config log */
+        cfg.cfg_instance = ll_instance;
+        cfg.cfg_uuid = sbi->ll_sb_uuid;
+        err = liblustre_process_log(&cfg, zconf_mgsnid, zconf_profile, 1);
+        if (err < 0) {
+                CERROR("Unable to process log: %s\n", zconf_profile);
+                GOTO(out_free, err);
+        }
 
-                lprof = list_entry(lustre_profile_list.next,
-                                   struct lustre_profile, lp_list);
-                osc = lprof->lp_osc;
-                mdc = lprof->lp_mdc;
+        lprof = class_get_profile(zconf_profile);
+        if (lprof == NULL) {
+                CERROR("No profile found: %s\n", zconf_profile);
+                GOTO(out_free, err = -EINVAL);
         }
+        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_md) + strlen(ll_instance) + 2);
+        sprintf(mdc, "%s-%s", lprof->lp_md, ll_instance);
 
         if (!osc) {
                 CERROR("no osc\n");
@@ -1528,21 +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, sizeof(KEY_ASYNC), KEY_ASYNC,
+                           sizeof(async), &async, NULL);
 
-        if (mdc_init_ea_size(obd, osc))
-                GOTO(out_free, err = -EINVAL);
+        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);
+        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
@@ -1552,64 +2025,86 @@ 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, sizeof(KEY_ASYNC), KEY_ASYNC,
+                           sizeof(async), &async, NULL);
 
-        err = obd_connect(&osc_conn, obd, &sbi->ll_sb_uuid);
+        obd->obd_upcall.onu_owner = &sbi->ll_lco;
+        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_FID | OBD_CONNECT_AT |
+                                OBD_CONNECT_SOM;
+
+        ocd.ocd_version = LUSTRE_VERSION_CODE;
+        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;
 
-        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);
         }
-        CDEBUG(D_SUPER, "rootfid "LPU64"\n", rootfid.id);
-        sbi->ll_rootino = rootfid.id;
+        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 "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_FLNOTOBD|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, 0, 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 == NULL) {
+        if (!root || IS_ERR(root)) {
                 CERROR("fail to generate root inode\n");
                 GOTO(out_request, err = -EBADF);
         }
 
-       /*
-        * Generate base path-node for root.
-        */
-       rootpb = _sysio_pb_new(&noname, NULL, root);
-       if (!rootpb) {
-               err = -ENOMEM;
-               goto out_inode;
-       }
+        /*
+         * Generate base path-node for root.
+         */
+        rootpb = _sysio_pb_new(&noname, NULL, root);
+        if (!rootpb) {
+                err = -ENOMEM;
+                goto out_inode;
+        }
 
-       err = _sysio_do_mount(fs, rootpb, flags, tocover, mntp);
-       if (err) {
+        err = _sysio_do_mount(fs, rootpb, flags, tocover, mntp);
+        if (err) {
                 _sysio_pb_gone(rootpb);
-               goto out_inode;
+                goto out_inode;
         }
 
+        cl_sb_init(sbi);
+
         ptlrpc_req_finished(request);
 
-        printf("LibLustre: namespace mounted successfully!\n");
+        CDEBUG(D_SUPER, "LibLustre: %s mounted successfully!\n", source);
+        liblustre_wait_idle();
 
         return 0;
 
@@ -1617,12 +2112,17 @@ out_inode:
         _sysio_i_gone(root);
 out_request:
         ptlrpc_req_finished(request);
-out_osc:
-        obd_disconnect(sbi->ll_osc_exp, 0);
-out_mdc:
-        obd_disconnect(sbi->ll_mdc_exp, 0);
+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;
 }
 
@@ -1634,7 +2134,7 @@ static struct inode_ops llu_inode_ops = {
         inop_lookup:    llu_iop_lookup,
         inop_getattr:   llu_iop_getattr,
         inop_setattr:   llu_iop_setattr,
-        inop_getdirentries:     NULL,
+        inop_filldirentries:     llu_iop_filldirentries,
         inop_mkdir:     llu_iop_mkdir_raw,
         inop_rmdir:     llu_iop_rmdir_raw,
         inop_symlink:   llu_iop_symlink_raw,
@@ -1644,17 +2144,17 @@ static struct inode_ops llu_inode_ops = {
         inop_link:      llu_iop_link_raw,
         inop_unlink:    llu_iop_unlink_raw,
         inop_rename:    llu_iop_rename_raw,
-        inop_ipreadv:   llu_iop_ipreadv,
-        inop_ipwritev:  llu_iop_ipwritev,
+        inop_pos:       llu_iop_pos,
+        inop_read:      llu_iop_read,
+        inop_write:     llu_iop_write,
         inop_iodone:    llu_iop_iodone,
         inop_fcntl:     llu_iop_fcntl,
         inop_sync:      llu_iop_sync,
         inop_datasync:  llu_iop_datasync,
         inop_ioctl:     llu_iop_ioctl,
         inop_mknod:     llu_iop_mknod_raw,
-#if 0
+#ifdef _HAVE_STATVFS
         inop_statvfs:   llu_iop_statvfs,
 #endif
         inop_gone:      llu_iop_gone,
 };
-