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[fs/lustre-release.git] / lustre / llite / llite_lib.c
index 4ab2c4a..f006c38 100644 (file)
 #include <linux/types.h>
 #include <linux/random.h>
 #include <linux/version.h>
+#include <linux/seq_file.h>
 
 #include <linux/lustre_lite.h>
 #include <linux/lustre_ha.h>
 #include <linux/lustre_dlm.h>
 #include <linux/lprocfs_status.h>
+#include <linux/lustre_acl.h>
+#include <linux/lustre_audit.h>
+#include <linux/lustre_gs.h>
+#include <linux/lustre_sec.h>
 #include "llite_internal.h"
 
 kmem_cache_t *ll_file_data_slab;
+kmem_cache_t *ll_intent_slab;
 
 extern struct address_space_operations ll_aops;
 extern struct address_space_operations ll_dir_aops;
@@ -63,14 +69,34 @@ struct ll_sb_info *lustre_init_sbi(struct super_block *sb)
         INIT_LIST_HEAD(&sbi->ll_conn_chain);
         INIT_HLIST_HEAD(&sbi->ll_orphan_dentry_list);
         INIT_LIST_HEAD(&sbi->ll_mnt_list);
+       
         sema_init(&sbi->ll_gns_sem, 1);
-        init_completion(&sbi->ll_gns_completion);
-        sbi->ll_gns_state = LL_GNS_STATE_IDLE;
+        spin_lock_init(&sbi->ll_gns_lock);
+        INIT_LIST_HEAD(&sbi->ll_gns_sbi_head);
+        init_waitqueue_head(&sbi->ll_gns_waitq);
+        init_completion(&sbi->ll_gns_mount_finished);
+
+        /* this later may be reset via /proc/fs/... */
+        memcpy(sbi->ll_gns_oname, ".mntinfo", strlen(".mntinfo"));
+        sbi->ll_gns_oname[strlen(sbi->ll_gns_oname)] = '\0';
+        
+        /* this later may be reset via /proc/fs/... */
+        memcpy(sbi->ll_gns_upcall, "/usr/sbin/gns_upcall",
+               strlen("/usr/sbin/gns_upcall"));
+        sbi->ll_gns_upcall[strlen(sbi->ll_gns_upcall)] = '\0';
+
+        /* default values, may be changed via /proc/fs/... */
+        sbi->ll_gns_state = LL_GNS_IDLE;
+       sbi->ll_gns_pending_dentry = NULL;
+        atomic_set(&sbi->ll_gns_enabled, 1);
+        sbi->ll_gns_tick = GNS_TICK_TIMEOUT;
+        sbi->ll_gns_timeout = GNS_MOUNT_TIMEOUT;
+
         sbi->ll_gns_timer.data = (unsigned long)sbi;
         sbi->ll_gns_timer.function = ll_gns_timer_callback;
         init_timer(&sbi->ll_gns_timer);
-        INIT_LIST_HEAD(&sbi->ll_gns_sbi_head);
-
+        //audit mask
+        sbi->ll_audit_mask = AUDIT_OFF;
         ll_set_sbi(sb, sbi);
 
         generate_random_uuid(uuid);
@@ -92,133 +118,307 @@ void lustre_free_sbi(struct super_block *sb)
         EXIT;
 }
 
-int lustre_init_ea_size(struct ll_sb_info *sbi)
+int lustre_init_dt_desc(struct ll_sb_info *sbi)
 {
-        struct lov_desc desc;
-        int rc, valsize;
+        __u32 valsize;
+        int rc = 0;
+        ENTRY;
         
-        /* OSC may have larger ea size */
-        valsize = sizeof(desc);
-        rc = obd_get_info(sbi->ll_osc_exp, strlen("lovdesc") + 1, "lovdesc", 
-                          &valsize, &desc);
-        if (rc)
-                RETURN(rc);
-        obd_init_ea_size(sbi->ll_mdc_exp, obd_size_diskmd(sbi->ll_osc_exp, NULL),
-                         desc.ld_tgt_count*sizeof(struct llog_cookie));
-
+        valsize = sizeof(sbi->ll_dt_desc);
+        memset(&sbi->ll_dt_desc, 0, sizeof(sbi->ll_dt_desc));
+        rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
+                          "lovdesc", &valsize, &sbi->ll_dt_desc);
         RETURN(rc);
 }
 
-int lustre_common_fill_super(struct super_block *sb, char *mdc, char *osc)
+static int lustre_connect_mds(struct super_block *sb, char *lmv,
+                              struct obd_connect_data *data,
+                              char *mds_security, int async, int pag)
 {
-        struct inode *root = 0;
         struct ll_sb_info *sbi = ll_s2sbi(sb);
-        struct obd_device *obd;
-        struct ll_fid rootfid;
+        struct lustre_handle md_conn = {0, };
+        struct obd_device *md_obd;
         struct obd_statfs osfs;
-        struct ptlrpc_request *request = NULL;
-        struct lustre_handle osc_conn = {0, };
-        struct lustre_handle mdc_conn = {0, };
-        struct lustre_md md;
-        kdev_t devno;
-        int err;
-
-        obd = class_name2obd(mdc);
-        if (!obd) {
-                CERROR("MDC %s: not setup or attached\n", mdc);
+        unsigned long sec_flags;
+        __u32 valsize;
+        int    err = 0;
+        ENTRY;       
+        md_obd = class_name2obd(lmv);
+        if (!md_obd) {
+                CERROR("MDC %s: not setup or attached\n", lmv);
                 RETURN(-EINVAL);
         }
 
-        if (proc_lustre_fs_root) {
-                err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
-                                                  osc, mdc);
-                if (err < 0)
-                        CERROR("could not register mount in /proc/lustre");
+        obd_set_info(md_obd->obd_self_export, strlen("async"), "async",
+                     sizeof(async), &async);
+
+        if (mds_security == NULL)
+                mds_security = "null";
+        
+        err = obd_set_info(md_obd->obd_self_export, strlen("sec"), "sec",
+                           strlen(mds_security), mds_security);
+        
+        if (err) {
+                CERROR("LMV %s: failed to set security %s, err %d\n",
+                        lmv, mds_security, err);
+                RETURN(err);
         }
 
-        err = obd_connect(&mdc_conn, obd, &sbi->ll_sb_uuid, 0);
+        if (pag) {
+                sec_flags = PTLRPC_SEC_FL_PAG;
+                err = obd_set_info(md_obd->obd_self_export,
+                                   strlen("sec_flags"), "sec_flags",
+                                   sizeof(sec_flags), &sec_flags);
+                if (err) {
+                        OBD_FREE(data, sizeof(*data));
+                        RETURN(err);
+                }
+        }
+
+        err = obd_connect(&md_conn, md_obd, &sbi->ll_sb_uuid, data,
+                          OBD_OPT_REAL_CLIENT);
         if (err == -EBUSY) {
-                CERROR("An MDS (mdc %s) is performing recovery, of which this"
+                CERROR("An MDS (lmv %s) is performing recovery, of which this"
                        " client is not a part.  Please wait for recovery to "
-                       "complete, abort, or time out.\n", mdc);
+                       "complete, abort, or time out.\n", lmv);
                 GOTO(out, err);
         } else if (err) {
-                CERROR("cannot connect to %s: rc = %d\n", mdc, err);
+                CERROR("cannot connect to %s: rc = %d\n", lmv, err);
                 GOTO(out, err);
         }
-        sbi->ll_mdc_exp = class_conn2export(&mdc_conn);
 
-        err = obd_statfs(obd, &osfs, jiffies - HZ);
+        sbi->ll_md_exp = class_conn2export(&md_conn);
+       
+        err = obd_statfs(md_obd, &osfs, jiffies - HZ);
         if (err)
-                GOTO(out_mdc, err);
+                GOTO(out_disconnect, err);
 
-        LASSERT(osfs.os_bsize);
+        if (!osfs.os_bsize) {
+                CERROR("Invalid block size is detected.");
+                GOTO(out_disconnect, err);
+        }
+
+        sb->s_magic = LL_SUPER_MAGIC;
         sb->s_blocksize = osfs.os_bsize;
         sb->s_blocksize_bits = log2(osfs.os_bsize);
-        sb->s_magic = LL_SUPER_MAGIC;
         sb->s_maxbytes = PAGE_CACHE_MAXBYTES;
-       
-        devno = get_uuid2int(sbi->ll_mdc_exp->exp_obd->obd_uuid.uuid, 
-                             strlen(sbi->ll_mdc_exp->exp_obd->obd_uuid.uuid));
 
-        sb->s_dev = devno;
+        /* in 2.6.x FS is not allowed to form s_dev */
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
+        {
+                kdev_t devno;
+                
+                devno = get_uuid2int((char *)sbi->ll_md_exp->exp_obd->obd_uuid.uuid, 
+                                     strlen((char *)sbi->ll_md_exp->exp_obd->obd_uuid.uuid));
+                
+                sb->s_dev = devno;
+        }
+#endif
+
+        /* after statfs, we are supposed to have connected to MDSs,
+         * so it's ok to check remote flag returned.
+         */
+        valsize = sizeof(&sbi->ll_remote);
+        err = obd_get_info(sbi->ll_md_exp, strlen("remote_flag"), "remote_flag",
+                           &valsize, &sbi->ll_remote);
+        if (err) {
+                CERROR("fail to obtain remote flag\n");
+                GOTO(out_disconnect, err);
+        }
+
+out_disconnect:
+        if (err)
+                obd_disconnect(sbi->ll_md_exp, 0);
+out:
+        RETURN(err);
+}
 
-        obd = class_name2obd(osc);
+static int lustre_connect_ost(struct super_block *sb, char *lov, 
+                              struct obd_connect_data *data, 
+                              char *oss_security, int async, int pag)
+{
+        struct ll_sb_info *sbi = ll_s2sbi(sb);
+        struct lustre_handle dt_conn = {0, };
+        struct obd_device *obd = NULL;
+        unsigned long sec_flags;
+        int err, mdsize; 
+
+        obd = class_name2obd(lov);
         if (!obd) {
-                CERROR("OSC %s: not setup or attached\n", osc);
-                GOTO(out_mdc, err);
+                CERROR("OSC %s: not setup or attached\n", lov);
+                GOTO(out, err = -EINVAL);
+        }
+        obd_set_info(obd->obd_self_export, strlen("async"), "async",
+                     sizeof(async), &async);
+
+       if (oss_security == NULL)
+                oss_security = "null";
+
+        err = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
+                           strlen(oss_security), oss_security);
+        if (err) {
+                CERROR("LOV %s: failed to set security %s, err %d\n",
+                        lov, oss_security, err);
+                RETURN(err);
+        }
+
+        /* FIXME Because of the async nature of file i/o, we never know
+         * who is actually dirty the pages; and any process have chance
+         * to trigger dirty-flushing within its own process context. So
+         * for simplicity we simply use root's credential, we suppose root
+         * always have credential.
+         */
+        if (pag)
+                sec_flags = PTLRPC_SEC_FL_PAG;
+        else
+                sec_flags = PTLRPC_SEC_FL_OSS;
+
+        err = obd_set_info(obd->obd_self_export,
+                           strlen("sec_flags"), "sec_flags",
+                           sizeof(sec_flags), &sec_flags);
+        if (err) {
+                OBD_FREE(data, sizeof(*data));
+                RETURN(err);
         }
 
-        err = obd_connect(&osc_conn, obd, &sbi->ll_sb_uuid, 0);
+        err = obd_connect(&dt_conn, obd, &sbi->ll_sb_uuid, data, 0);
         if (err == -EBUSY) {
-                CERROR("An OST (osc %s) is performing recovery, of which this"
+                CERROR("An OST (lov %s) is performing recovery, of which this"
                        " client is not a part.  Please wait for recovery to "
-                       "complete, abort, or time out.\n", osc);
+                       "complete, abort, or time out.\n", lov);
                 GOTO(out, err);
         } else if (err) {
-                CERROR("cannot connect to %s: rc = %d\n", osc, err);
-                GOTO(out_mdc, err);
+                CERROR("cannot connect to %s: rc = %d\n", lov, err);
+                GOTO(out, err);
         }
-        sbi->ll_osc_exp = class_conn2export(&osc_conn);
+        sbi->ll_dt_exp = class_conn2export(&dt_conn);
 
-        lustre_init_ea_size(sbi);
-        err = md_getstatus(sbi->ll_mdc_exp, &rootfid);
+        err = lustre_init_dt_desc(sbi);
+       
+        if (err) {
+                CWARN("init dt_desc error %d \n", err);
+                GOTO(out, err = 0);
+        }
+        mdsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
+        obd_init_ea_size(sbi->ll_md_exp, mdsize, sbi->ll_dt_desc.ld_tgt_count *
+                         sizeof(struct llog_cookie));
+out:
+        RETURN(err);
+}
+
+extern struct dentry_operations ll_d_ops;
+
+static int lustre_init_root_inode(struct super_block *sb)
+{
+        struct ll_sb_info *sbi = ll_s2sbi(sb);
+        struct ptlrpc_request *request = NULL;
+        struct inode *root = NULL;
+        struct lustre_md md;
+        int err = 0;
+        ENTRY;
+
+        err = md_getstatus(sbi->ll_md_exp, &sbi->ll_rootid);
         if (err) {
                 CERROR("cannot mds_connect: rc = %d\n", err);
-                GOTO(out_osc, err);
+                GOTO(out, err);
         }
-        CDEBUG(D_SUPER, "rootfid "LPU64"\n", rootfid.id);
-        sbi->ll_rootino = rootfid.id;
+        CDEBUG(D_SUPER, "rootid "DLID4"\n", OLID4(&sbi->ll_rootid));
 
         sb->s_op = &lustre_super_operations;
 
-        /* make root inode
-         * XXX: move this to after cbd setup? */
-        err = md_getattr(sbi->ll_mdc_exp, &rootfid,
-                         OBD_MD_FLNOTOBD | OBD_MD_FLBLOCKS, 0, &request);
+        /* make root inode */
+        err = md_getattr(sbi->ll_md_exp, &sbi->ll_rootid,
+                         (OBD_MD_FLNOTOBD | OBD_MD_FLBLOCKS | OBD_MD_FID),
+                         NULL, NULL, 0, 0, NULL, &request);
         if (err) {
                 CERROR("md_getattr failed for root: rc = %d\n", err);
-                GOTO(out_osc, err);
+                GOTO(out, err);
         }
 
-        err = mdc_req2lustre_md(sbi->ll_mdc_exp, request, 0, 
-                                sbi->ll_osc_exp, &md);
+        err = mdc_req2lustre_md(sbi->ll_md_exp, request, 0, 
+                                sbi->ll_dt_exp, &md);
         if (err) {
-                CERROR("failed to understand root inode md: rc = %d\n",err);
-                ptlrpc_req_finished (request);
-                GOTO(out_osc, err);
+                CERROR("failed to understand root inode md: rc = %d\n", err);
+                ptlrpc_req_finished(request);
+                GOTO(out, err);
         }
 
-        LASSERT(sbi->ll_rootino != 0);
-        root = ll_iget(sb, sbi->ll_rootino, &md);
+        LASSERT(id_ino(&sbi->ll_rootid) != 0);
+        root = ll_iget(sb, id_ino(&sbi->ll_rootid), &md);
 
         ptlrpc_req_finished(request);
 
         if (root == NULL || is_bad_inode(root)) {
-                /* XXX might need iput() for bad inode */
+                if (md.lsm != NULL)
+                    obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
+                if (md.mea != NULL)
+                    obd_free_memmd(sbi->ll_md_exp,
+                                   (struct lov_stripe_md**)&md.mea);
                 CERROR("lustre_lite: bad iget4 for root\n");
                 GOTO(out_root, err = -EBADF);
         }
+        sb->s_root = d_alloc_root(root);
+        sb->s_root->d_op = &ll_d_ops;
+out_root:
+        if (err)
+                iput(root);
+out:
+        RETURN(err);
+}
+
+int lustre_common_fill_super(struct super_block *sb, char *lmv, char *lov,
+                             char *gkc, int async,  char *mds_security,  
+                             char *oss_security, __u32 *nllu, int pag, 
+                             __u64 *remote)
+{
+        struct ll_sb_info *sbi = ll_s2sbi(sb);
+        struct obd_connect_data *data;
+        int err;
+        ENTRY;
+
+        /*process the connect flags*/
+        if ((*remote & (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) ==
+                       (OBD_CONNECT_LOCAL | OBD_CONNECT_REMOTE)) {
+                CERROR("wrong remote flag "LPX64"\n", *remote);
+                RETURN(-EINVAL);
+        }
+
+        OBD_ALLOC(data, sizeof(*data));
+        if (!data)
+                RETURN(-ENOMEM);
+
+        data->ocd_connect_flags |= *remote & (OBD_CONNECT_LOCAL |
+                                              OBD_CONNECT_REMOTE);
+        memcpy(data->ocd_nllu, nllu, sizeof(data->ocd_nllu));
+
+        if (proc_lustre_fs_root) {
+                err = lprocfs_register_mountpoint(proc_lustre_fs_root, 
+                                                  sb, lov, lmv);
+                if (err < 0)
+                        CERROR("could not register mount in /proc/lustre");
+        }
+
+        /*connect mds */ 
+        err = lustre_connect_mds(sb, lmv, data, mds_security, async, pag);
+        if (err)
+                GOTO(out, err);
+
+        /*connect OST*/
+        err = lustre_connect_ost(sb, lov, data, oss_security, async, pag);
+        if (err)
+                GOTO(out_lmv, err);
+
+        /*connect GSS*/
+        err = lustre_init_crypto(sb, gkc, data, async);
+        if (err) {
+                CERROR("Could not connect to GSS err %d\n", err);
+                err = 0;
+        }
+        
+        err = lustre_init_root_inode(sb);
+        if (err)
+                GOTO(out_gks, err);
 
         err = ll_close_thread_start(&sbi->ll_lcq);
         if (err) {
@@ -231,28 +431,29 @@ int lustre_common_fill_super(struct super_block *sb, char *mdc, char *osc)
         /* making vm readahead 0 for 2.4.x. In the case of 2.6.x,
            backing dev info assigned to inode mapping is used for
            determining maximal readahead. */
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) && \
+    !defined(KERNEL_HAS_AS_MAX_READAHEAD)
         /* bug 2805 - set VM readahead to zero */
         vm_max_readahead = vm_min_readahead = 0;
 #endif
-
-        sb->s_root = d_alloc_root(root);
-
+        sb->s_flags |= MS_POSIXACL;
 #ifdef S_PDIROPS
         CWARN("Enabling PDIROPS\n");
         sb->s_flags |= S_PDIROPS;
 #endif
-
+        if (data != NULL)
+                OBD_FREE(data, sizeof(*data));
         RETURN(err);
-
 out_root:
-        if (root)
-                iput(root);
-out_osc:
-        obd_disconnect(sbi->ll_osc_exp, 0);
-out_mdc:
-        obd_disconnect(sbi->ll_mdc_exp, 0);
+        if (sb->s_root)
+                dput(sb->s_root);
+out_gks:
+        lustre_destroy_crypto(sb);
+out_lmv:
+        obd_disconnect(sbi->ll_md_exp, 0);
 out:
+        if (data != NULL)
+                OBD_FREE(data, sizeof(*data));
         lprocfs_unregister_mountpoint(sbi);
         RETURN(err);
 }
@@ -264,11 +465,12 @@ void lustre_common_put_super(struct super_block *sb)
         ENTRY;
 
         ll_gns_del_timer(sbi);
-
-        ll_close_thread_shutdown(sbi->ll_lcq);
+        ll_close_thread_stop(sbi->ll_lcq);
 
         list_del(&sbi->ll_conn_chain);
-        obd_disconnect(sbi->ll_osc_exp, 0);
+        obd_disconnect(sbi->ll_dt_exp, 0);
+        
+        lustre_destroy_crypto(sb);
 
         lprocfs_unregister_mountpoint(sbi);
         if (sbi->ll_proc_root) {
@@ -276,21 +478,18 @@ void lustre_common_put_super(struct super_block *sb)
                 sbi->ll_proc_root = NULL;
         }
 
-        obd_disconnect(sbi->ll_mdc_exp, 0);
+        obd_disconnect(sbi->ll_md_exp, 0);
 
         // We do this to get rid of orphaned dentries. That is not really trw.
-        spin_lock(&dcache_lock);
         hlist_for_each_safe(tmp, next, &sbi->ll_orphan_dentry_list) {
                 struct dentry *dentry = hlist_entry(tmp, struct dentry, d_hash);
-                CWARN("orphan dentry %*s (%p) at unmount\n",
-                      dentry->d_name.len, dentry->d_name.name, dentry);
+                CWARN("orphan dentry %.*s (%p->%p) at unmount\n",
+                      dentry->d_name.len, dentry->d_name.name, dentry, next);
                 shrink_dcache_parent(dentry);
         }
-        spin_unlock(&dcache_lock);
         EXIT;
 }
 
-
 char *ll_read_opt(const char *opt, char *data)
 {
         char *value;
@@ -326,7 +525,8 @@ int ll_set_opt(const char *opt, char *data, int fl)
                 RETURN(fl);
 }
 
-void ll_options(char *options, char **ost, char **mdc, int *flags)
+void ll_options(char *options, char **lov, char **lmv, char **gkc,
+                char **mds_sec, char **oss_sec, int *async, int *flags)
 {
         char *this_char;
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
@@ -339,6 +539,7 @@ void ll_options(char *options, char **ost, char **mdc, int *flags)
                 return;
         }
 
+        *async = 0;
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
         for (this_char = strtok (options, ",");
              this_char != NULL;
@@ -347,9 +548,19 @@ void ll_options(char *options, char **ost, char **mdc, int *flags)
         while ((this_char = strsep (&opt_ptr, ",")) != NULL) {
 #endif
                 CDEBUG(D_SUPER, "this_char %s\n", this_char);
-                if (!*ost && (*ost = ll_read_opt("osc", this_char)))
+                if (!*lov && (*lov = ll_read_opt("osc", this_char)))
+                        continue;
+                if (!*lmv && (*lmv = ll_read_opt("mdc", this_char)))
                         continue;
-                if (!*mdc && (*mdc = ll_read_opt("mdc", this_char)))
+                if (!*gkc && (*gkc = ll_read_opt("gkc", this_char)))
+                        continue;
+                if (!strncmp(this_char, "lasync", strlen("lasync"))) {
+                        *async = 1;
+                        continue;
+                }
+                if (!*mds_sec && (*mds_sec = ll_read_opt("mds_sec", this_char)))
+                        continue;
+                if (!*oss_sec && (*oss_sec = ll_read_opt("oss_sec", this_char)))
                         continue;
                 if (!(*flags & LL_SBI_NOLCK) &&
                     ((*flags) = (*flags) |
@@ -364,19 +575,36 @@ void ll_options(char *options, char **ost, char **mdc, int *flags)
 void ll_lli_init(struct ll_inode_info *lli)
 {
         sema_init(&lli->lli_open_sem, 1);
+        sema_init(&lli->lli_size_sem, 1);
         lli->lli_flags = 0;
+        lli->lli_size_pid = 0;
         lli->lli_maxbytes = PAGE_CACHE_MAXBYTES;
         spin_lock_init(&lli->lli_lock);
         INIT_LIST_HEAD(&lli->lli_pending_write_llaps);
+        INIT_LIST_HEAD(&lli->lli_close_item);
         lli->lli_inode_magic = LLI_INODE_MAGIC;
+        memset(&lli->lli_id, 0, sizeof(lli->lli_id));
+        sema_init(&lli->lli_och_sem, 1);
+        lli->lli_mds_read_och = lli->lli_mds_write_och = NULL;
+        lli->lli_mds_exec_och = NULL;
+        lli->lli_open_fd_read_count = lli->lli_open_fd_write_count = 0;
+        lli->lli_open_fd_exec_count = 0;
+        lli->lli_audit_mask = AUDIT_OFF;
+        lli->lli_key_info = NULL;
+        init_waitqueue_head(&lli->lli_dirty_wait);
+        lli->lli_io_epoch = 0;
+        INIT_LIST_HEAD(&lli->lli_capas);
 }
 
 int ll_fill_super(struct super_block *sb, void *data, int silent)
 {
         struct ll_sb_info *sbi;
-        char *osc = NULL;
-        char *mdc = NULL;
-        int err;
+        char *lov = NULL, *lmv = NULL, *gkc = NULL;
+        char *mds_sec = NULL;
+        char *oss_sec = NULL;
+        int async, err;
+        __u32 nllu[2] = { NOBODY_UID, NOBODY_GID };
+        __u64 remote_flag = 0;    
         ENTRY;
 
         CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
@@ -386,122 +614,146 @@ int ll_fill_super(struct super_block *sb, void *data, int silent)
                 RETURN(-ENOMEM);
 
         sbi->ll_flags |= LL_SBI_READAHEAD;
-        ll_options(data, &osc, &mdc, &sbi->ll_flags);
+        ll_options(data, &lov, &lmv, &gkc, &mds_sec, &oss_sec,
+                   &async, &sbi->ll_flags);
 
-        if (!osc) {
-                CERROR("no osc\n");
+        if (!lov || !lmv) {
+                CERROR("no osc %p or no mdc %p\n", lov, lmv);
                 GOTO(out, err = -EINVAL);
         }
-
-        if (!mdc) {
-                CERROR("no mdc\n");
-                GOTO(out, err = -EINVAL);
-        }
-
-        err = lustre_common_fill_super(sb, mdc, osc);
+        
+        err = lustre_common_fill_super(sb, lmv, lov, gkc, async, mds_sec, 
+                                       oss_sec, nllu, 0, &remote_flag);
+        EXIT;
 out:
         if (err)
                 lustre_free_sbi(sb);
 
-        if (mdc)
-                OBD_FREE(mdc, strlen(mdc) + 1);
-        if (osc)
-                OBD_FREE(osc, strlen(osc) + 1);
-
-        RETURN(err);
+        if (lmv)
+                OBD_FREE(lmv, strlen(lmv) + 1);
+        if (lov)
+                OBD_FREE(lov, strlen(lov) + 1);
+        if (mds_sec)
+                OBD_FREE(mds_sec, strlen(mds_sec) + 1);
+        if (oss_sec)
+                OBD_FREE(oss_sec, strlen(oss_sec) + 1);
+        if (gkc)
+                OBD_FREE(gkc, strlen(gkc) + 1);
+
+        return err;
 } /* ll_read_super */
 
 static int lustre_process_log(struct lustre_mount_data *lmd, char *profile,
                               struct config_llog_instance *cfg, int allow_recov)
 {
-        struct lustre_cfg lcfg;
+        struct lustre_cfg *lcfg = NULL;
+        struct lustre_cfg_bufs bufs;
         struct portals_cfg pcfg;
-        char * peer = "MDS_PEER_UUID";
+        char *peer = "MDS_PEER_UUID";
         struct obd_device *obd;
-        struct lustre_handle mdc_conn = {0, };
+        struct lustre_handle md_conn = {0, };
         struct obd_export *exp;
-        char * name = "mdc_dev";
+        char *name = "mdc_dev";
         class_uuid_t uuid;
-        struct obd_uuid mdc_uuid;
+        struct obd_uuid lmv_uuid;
         struct llog_ctxt *ctxt;
-        int rc = 0;
-        int err;
+        int rc = 0, err = 0;
         ENTRY;
 
         if (lmd_bad_magic(lmd))
                 RETURN(-EINVAL);
 
         generate_random_uuid(uuid);
-        class_uuid_unparse(uuid, &mdc_uuid);
+        class_uuid_unparse(uuid, &lmv_uuid);
 
         if (lmd->lmd_local_nid) {
                 PCFG_INIT(pcfg, NAL_CMD_REGISTER_MYNID);
                 pcfg.pcfg_nal = lmd->lmd_nal;
                 pcfg.pcfg_nid = lmd->lmd_local_nid;
-                err = libcfs_nal_cmd(&pcfg);
-                if (err <0)
-                        GOTO(out, err);
+                rc = libcfs_nal_cmd(&pcfg);
+                if (rc < 0)
+                        GOTO(out, rc);
         }
 
         if (lmd->lmd_nal == SOCKNAL ||
-              lmd->lmd_nal == OPENIBNAL) {
+            lmd->lmd_nal == OPENIBNAL ||
+            lmd->lmd_nal == IIBNAL ||
+            lmd->lmd_nal == VIBNAL ||
+            lmd->lmd_nal == RANAL) {
                 PCFG_INIT(pcfg, NAL_CMD_ADD_PEER);
                 pcfg.pcfg_nal     = lmd->lmd_nal;
                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
                 pcfg.pcfg_id      = lmd->lmd_server_ipaddr;
                 pcfg.pcfg_misc    = lmd->lmd_port;
-                pcfg.pcfg_size    = 8388608;
-                pcfg.pcfg_flags   = 0x4; /*share*/
-                err = libcfs_nal_cmd(&pcfg);
-                if (err <0)
-                        GOTO(out, err);
+                rc = libcfs_nal_cmd(&pcfg);
+                if (rc < 0)
+                        GOTO(out, rc);
         }
-
-        LCFG_INIT(lcfg, LCFG_ADD_UUID, name);
-        lcfg.lcfg_nid = lmd->lmd_server_nid;
-        lcfg.lcfg_inllen1 = strlen(peer) + 1;
-        lcfg.lcfg_inlbuf1 = peer;
-        lcfg.lcfg_nal = lmd->lmd_nal;
-        err = class_process_config(&lcfg);
+        lustre_cfg_bufs_reset(&bufs, name);
+        lustre_cfg_bufs_set_string(&bufs, 1, peer);
+
+        lcfg = lustre_cfg_new(LCFG_ADD_UUID, &bufs);
+        lcfg->lcfg_nal = lmd->lmd_nal;
+        lcfg->lcfg_nid = lmd->lmd_server_nid;
+        LASSERT(lcfg->lcfg_nal);
+        LASSERT(lcfg->lcfg_nid);
+        err = class_process_config(lcfg);
+        lustre_cfg_free(lcfg);
         if (err < 0)
                 GOTO(out_del_conn, err);
 
-        LCFG_INIT(lcfg, LCFG_ATTACH, name);
-        lcfg.lcfg_inlbuf1 = "mdc";
-        lcfg.lcfg_inllen1 = strlen(lcfg.lcfg_inlbuf1) + 1;
-        lcfg.lcfg_inlbuf2 = mdc_uuid.uuid;
-        lcfg.lcfg_inllen2 = strlen(lcfg.lcfg_inlbuf2) + 1;
-        err = class_process_config(&lcfg);
+        lustre_cfg_bufs_reset(&bufs, name);
+        lustre_cfg_bufs_set_string(&bufs, 1, OBD_MDC_DEVICENAME);
+        lustre_cfg_bufs_set_string(&bufs, 2, (char *)lmv_uuid.uuid);
+
+        lcfg = lustre_cfg_new(LCFG_ATTACH, &bufs);
+        err = class_process_config(lcfg);
+        lustre_cfg_free(lcfg);
         if (err < 0)
                 GOTO(out_del_uuid, err);
 
-        LCFG_INIT(lcfg, LCFG_SETUP, name);
-        lcfg.lcfg_inlbuf1 = lmd->lmd_mds;
-        lcfg.lcfg_inllen1 = strlen(lcfg.lcfg_inlbuf1) + 1;
-        lcfg.lcfg_inlbuf2 = peer;
-        lcfg.lcfg_inllen2 = strlen(lcfg.lcfg_inlbuf2) + 1;
-        err = class_process_config(&lcfg);
+        lustre_cfg_bufs_reset(&bufs, name);
+        lustre_cfg_bufs_set_string(&bufs, 1, lmd->lmd_mds);
+        lustre_cfg_bufs_set_string(&bufs, 2, peer);
+
+        lcfg = lustre_cfg_new(LCFG_SETUP, &bufs);
+        err = class_process_config(lcfg);
+        lustre_cfg_free(lcfg);
         if (err < 0)
                 GOTO(out_detach, err);
 
         obd = class_name2obd(name);
         if (obd == NULL)
-                GOTO(out_cleanup, err = -EINVAL);
+                GOTO(out_cleanup, rc = -EINVAL);
+
+        rc = obd_set_info(obd->obd_self_export, strlen("sec"), "sec",
+                          strlen(lmd->lmd_mds_security), lmd->lmd_mds_security);
+        if (rc)
+                GOTO(out_cleanup, rc);
+
+        if (lmd->lmd_pag) {
+                unsigned long sec_flags = PTLRPC_SEC_FL_PAG;
+                rc = obd_set_info(obd->obd_self_export,
+                                  strlen("sec_flags"), "sec_flags",
+                                  sizeof(sec_flags), &sec_flags);
+                if (rc)
+                        GOTO(out_cleanup, rc);
+        }
 
         /* Disable initial recovery on this import */
-        err = obd_set_info(obd->obd_self_export,
-                           strlen("initial_recov"), "initial_recov",
-                           sizeof(allow_recov), &allow_recov);
-        if (err)
-                GOTO(out_cleanup, err);
+        rc = obd_set_info(obd->obd_self_export,
+                          strlen("initial_recov"), "initial_recov",
+                          sizeof(allow_recov), &allow_recov);
+        if (rc)
+                GOTO(out_cleanup, rc);
 
-        err = obd_connect(&mdc_conn, obd, &mdc_uuid, 0);
-        if (err) {
-                CERROR("cannot connect to %s: rc = %d\n", lmd->lmd_mds, err);
-                GOTO(out_cleanup, err);
+        rc = obd_connect(&md_conn, obd, &lmv_uuid, NULL, OBD_OPT_REAL_CLIENT);
+        if (rc) {
+                CERROR("cannot connect to %s: rc = %d\n", lmd->lmd_mds, rc);
+                GOTO(out_cleanup, rc);
         }
 
-        exp = class_conn2export(&mdc_conn);
+        exp = class_conn2export(&md_conn);
 
         ctxt = llog_get_context(&exp->exp_obd->obd_llogs,LLOG_CONFIG_REPL_CTXT);
         rc = class_config_process_llog(ctxt, profile, cfg);
@@ -509,183 +761,76 @@ static int lustre_process_log(struct lustre_mount_data *lmd, char *profile,
                 CERROR("class_config_process_llog failed: rc = %d\n", rc);
 
         err = obd_disconnect(exp, 0);
-
+        
+        EXIT;
 out_cleanup:
-        LCFG_INIT(lcfg, LCFG_CLEANUP, name);
-        err = class_process_config(&lcfg);
+        lustre_cfg_bufs_reset(&bufs, name);
+        lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
+        err = class_process_config(lcfg);
+        lustre_cfg_free(lcfg);
         if (err < 0)
                 GOTO(out, err);
-
 out_detach:
-        LCFG_INIT(lcfg, LCFG_DETACH, name);
-        err = class_process_config(&lcfg);
+        lustre_cfg_bufs_reset(&bufs, name);
+        lcfg = lustre_cfg_new(LCFG_DETACH, &bufs);
+        err = class_process_config(lcfg);
+        lustre_cfg_free(lcfg);
         if (err < 0)
                 GOTO(out, err);
 
 out_del_uuid:
-        LCFG_INIT(lcfg, LCFG_DEL_UUID, name);
-        lcfg.lcfg_inllen1 = strlen(peer) + 1;
-        lcfg.lcfg_inlbuf1 = peer;
-        err = class_process_config(&lcfg);
+        lustre_cfg_bufs_reset(&bufs, name);
+        lustre_cfg_bufs_set_string(&bufs, 1, peer);
+        lcfg = lustre_cfg_new(LCFG_DEL_UUID, &bufs);
+        err = class_process_config(lcfg);
+        lustre_cfg_free(lcfg);
 
 out_del_conn:
         if (lmd->lmd_nal == SOCKNAL ||
-            lmd->lmd_nal == OPENIBNAL) {
+            lmd->lmd_nal == OPENIBNAL ||
+            lmd->lmd_nal == IIBNAL ||
+            lmd->lmd_nal == VIBNAL ||
+            lmd->lmd_nal == RANAL) {
+                int err2;
+
                 PCFG_INIT(pcfg, NAL_CMD_DEL_PEER);
                 pcfg.pcfg_nal     = lmd->lmd_nal;
                 pcfg.pcfg_nid     = lmd->lmd_server_nid;
                 pcfg.pcfg_flags   = 1;          /* single_share */
-                err = libcfs_nal_cmd(&pcfg);
-                if (err <0)
+                err2 = libcfs_nal_cmd(&pcfg);
+                if (err2 && !err)
+                        err = err2;
+                if (err < 0)
                         GOTO(out, err);
         }
 out:
         if (rc == 0)
                 rc = err;
 
-        RETURN(rc);
+        return rc;
 }
 
-int lustre_fill_super(struct super_block *sb, void *data, int silent)
-{
-        struct lustre_mount_data * lmd = data;
-        struct ll_sb_info *sbi;
-        char *osc = NULL;
-        char *mdc = NULL;
-        int err;
-        ENTRY;
-
-        CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
-        if (lmd_bad_magic(lmd))
-                RETURN(-EINVAL);
-
-        sbi = lustre_init_sbi(sb);
-        if (!sbi)
-                RETURN(-ENOMEM);
-
-        sbi->ll_flags |= LL_SBI_READAHEAD;
-
-        if (lmd->lmd_profile) {
-                struct lustre_profile *lprof;
-                struct config_llog_instance cfg;
-                int len;
-
-                if (lmd->lmd_mds[0] == '\0') {
-                        CERROR("no mds name\n");
-                        GOTO(out_free, err = -EINVAL);
-                }
-
-                OBD_ALLOC(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
-                if (sbi->ll_lmd == NULL)
-                        GOTO(out_free, err = -ENOMEM);
-                memcpy(sbi->ll_lmd, lmd, sizeof(*lmd));
-
-                /* generate a string unique to this super, let's try
-                 the address of the super itself.*/
-                len = (sizeof(sb) * 2) + 1;
-                OBD_ALLOC(sbi->ll_instance, len);
-                if (sbi->ll_instance == NULL)
-                        GOTO(out_free, err = -ENOMEM);
-                sprintf(sbi->ll_instance, "%p", sb);
-
-                cfg.cfg_instance = sbi->ll_instance;
-                cfg.cfg_uuid = sbi->ll_sb_uuid;
-                cfg.cfg_local_nid = lmd->lmd_local_nid;
-                err = lustre_process_log(lmd, lmd->lmd_profile, &cfg, 0);
-                if (err < 0) {
-                        CERROR("Unable to process log: %s\n", lmd->lmd_profile);
-                        GOTO(out_free, err);
-                }
-
-                lprof = class_get_profile(lmd->lmd_profile);
-                if (lprof == NULL) {
-                        CERROR("No profile found: %s\n", lmd->lmd_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);
-        }
-
-        if (!osc) {
-                CERROR("no osc\n");
-                GOTO(out_free, err = -EINVAL);
-        }
-
-        if (!mdc) {
-                CERROR("no mdc\n");
-                GOTO(out_free, err = -EINVAL);
-        }
-
-        err = lustre_common_fill_super(sb, mdc, osc);
-
-        if (err)
-                GOTO(out_free, err);
-        
-out_dev:
-        if (mdc)
-                OBD_FREE(mdc, strlen(mdc) + 1);
-        if (osc)
-                OBD_FREE(osc, strlen(osc) + 1);
-
-        RETURN(err);
-
-out_free:
-        if (sbi->ll_lmd) {
-                int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
-                int err;
-
-                if (sbi->ll_instance != NULL) {
-                        struct lustre_mount_data *lmd = sbi->ll_lmd;
-                        char * cln_prof;
-                        struct config_llog_instance cfg;
-
-                        cfg.cfg_instance = sbi->ll_instance;
-                        cfg.cfg_uuid = sbi->ll_sb_uuid;
-
-                        OBD_ALLOC(cln_prof, len);
-                        sprintf(cln_prof, "%s-clean", lmd->lmd_profile);
-
-                        err = lustre_process_log(lmd, cln_prof, &cfg, 0);
-                        if (err < 0)
-                                CERROR("Unable to process log: %s\n", cln_prof);
-                        OBD_FREE(cln_prof, len);
-                        OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance)+ 1);
-                }
-                OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
-        }
-        lustre_free_sbi(sb);
-
-        goto out_dev;
-} /* lustre_fill_super */
-
 static void lustre_manual_cleanup(struct ll_sb_info *sbi)
 {
-        struct lustre_cfg lcfg;
+        struct lustre_cfg *lcfg;
+        struct lustre_cfg_bufs bufs;
         struct obd_device *obd;
         int next = 0;
 
-        while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL)
-        {
+        while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)) != NULL) {
                 int err;
 
-                LCFG_INIT(lcfg, LCFG_CLEANUP, obd->obd_name);
-                err = class_process_config(&lcfg);
+                lustre_cfg_bufs_reset(&bufs, obd->obd_name);
+                lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
+                err = class_process_config(lcfg);
                 if (err) {
                         CERROR("cleanup failed: %s\n", obd->obd_name);
                         //continue;
                 }
-
-                LCFG_INIT(lcfg, LCFG_DETACH, obd->obd_name);
-                err = class_process_config(&lcfg);
+                
+                lcfg->lcfg_command = LCFG_DETACH;
+                err = class_process_config(lcfg);
+                lustre_cfg_free(lcfg);
                 if (err) {
                         CERROR("detach failed: %s\n", obd->obd_name);
                         //continue;
@@ -696,51 +841,205 @@ static void lustre_manual_cleanup(struct ll_sb_info *sbi)
                 class_del_profile(sbi->ll_lmd->lmd_profile);
 }
 
-void lustre_put_super(struct super_block *sb)
+static int lustre_process_profile(struct super_block *sb, 
+                                  struct lustre_mount_data *lmd,
+                                  char **lov, char **lmv, char **gkc)  
 {
-        struct obd_device *obd;
         struct ll_sb_info *sbi = ll_s2sbi(sb);
-        int force_umount = 0;
+        struct config_llog_instance cfg;
+        struct lustre_profile *lprof;
+        int len, err = 0;
         ENTRY;
 
-        CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
-        obd = class_exp2obd(sbi->ll_mdc_exp);
-        if (obd)
-                force_umount = obd->obd_no_recov;
-        obd = NULL;
+        if (!lmd->lmd_profile)
+                RETURN(0);
+        if (lmd->lmd_mds[0] == '\0') {
+                CERROR("no mds name\n");
+                GOTO(out, err = -EINVAL);
+        }
+        lmd->lmd_mds_security[sizeof(lmd->lmd_mds_security) - 1] = 0;
+        lmd->lmd_oss_security[sizeof(lmd->lmd_oss_security) - 1] = 0;
+
+        OBD_ALLOC(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
+        if (sbi->ll_lmd == NULL)
+                GOTO(out, err = -ENOMEM);
+        memcpy(sbi->ll_lmd, lmd, sizeof(*lmd));
+
+        /* generate a string unique to this super, let's try the address of the
+         * super itself. */
+        len = (sizeof(sb) * 2) + 1;
+        OBD_ALLOC(sbi->ll_instance, len);
+        if (sbi->ll_instance == NULL)
+                GOTO(out, err = -ENOMEM);
+        sprintf(sbi->ll_instance, "%p", sb);
 
-        lustre_common_put_super(sb);
-        if (sbi->ll_lmd != NULL) {
-                char * cln_prof;
-                int len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean")+1;
-                int err;
-                struct config_llog_instance cfg;
+        cfg.cfg_instance = sbi->ll_instance;
+        cfg.cfg_uuid = sbi->ll_sb_uuid;
+        cfg.cfg_local_nid = lmd->lmd_local_nid;
+        cfg.cfg_flags |= CFG_MODIFY_UUID_FL;
+        err = lustre_process_log(lmd, lmd->lmd_profile, &cfg, 0);
+        if (err < 0) {
+                CERROR("Unable to process log: %s\n", lmd->lmd_profile);
+                GOTO(out, err);
+        }
 
-                if (force_umount) {
-                        CERROR("force umount, doing manual cleanup\n");
-                        lustre_manual_cleanup(sbi);
-                        GOTO(free_lmd, 0);
-                }
+        lprof = class_get_profile(lmd->lmd_profile);
+        if (lprof == NULL) {
+                CERROR("No profile found: %s\n", lmd->lmd_profile);
+                GOTO(out, err = -EINVAL);
+        }
+
+        OBD_ALLOC(*lov, strlen(lprof->lp_lov) +
+                  strlen(sbi->ll_instance) + 2);
+        if (*lov == NULL)
+                GOTO(out, err = -ENOMEM);
+        
+        sprintf(*lov, "%s-%s", lprof->lp_lov, sbi->ll_instance);
+
+        OBD_ALLOC(*lmv, strlen(lprof->lp_lmv) +
+                  strlen(sbi->ll_instance) + 2);
+        if (*lmv == NULL)
+                GOTO(out_free_lov, err = -ENOMEM);
+
+        sprintf(*lmv, "%s-%s", lprof->lp_lmv, sbi->ll_instance);
+
+        if (lprof->lp_gkc) {
+               OBD_ALLOC(*gkc, strlen(lprof->lp_gkc) +
+                         strlen(sbi->ll_instance) + 2);
+               if (*gkc == NULL)
+                       GOTO(out_free_lmv, err = -ENOMEM);
+               
+               sprintf(*gkc, "%s-%s", lprof->lp_gkc, sbi->ll_instance); 
+        }
+        
+        RETURN(err);
+out_free_lmv:
+        OBD_FREE(*lmv, strlen(lprof->lp_lmv) +
+                 strlen(sbi->ll_instance) + 2);
+out_free_lov:
+        OBD_FREE(*lov, strlen(lprof->lp_lov) +
+                 strlen(sbi->ll_instance) + 2);
+out: 
+        return err; 
+}
 
+static int lustre_clean_profile(struct ll_sb_info *sbi, int force_umount)
+{
+        struct lustre_mount_data *lmd = sbi->ll_lmd;
+        struct config_llog_instance cfg;
+        char *cl_prof;
+        int len, err = 0;
+        ENTRY; 
+        if (!lmd)
+                RETURN(err);
+
+        len = strlen(sbi->ll_lmd->lmd_profile) + sizeof("-clean") + 1;
+        
+        if (force_umount) {
+                CERROR("force umount, doing manual cleanup\n");
+                lustre_manual_cleanup(sbi);
+                GOTO(free_lmd, 0);
+                
+        }
+        if (sbi->ll_instance != NULL) {
+                cfg.cfg_flags |= CFG_MODIFY_UUID_FL;
                 cfg.cfg_instance = sbi->ll_instance;
                 cfg.cfg_uuid = sbi->ll_sb_uuid;
 
-                OBD_ALLOC(cln_prof, len);
-                sprintf(cln_prof, "%s-clean", sbi->ll_lmd->lmd_profile);
-
-                err = lustre_process_log(sbi->ll_lmd, cln_prof, &cfg, 0);
+                OBD_ALLOC(cl_prof, len);
+                if (!cl_prof) {
+                        CERROR("can't allocate memory, "
+                               "skipping processing cleanup profile.\n");
+                        GOTO(free_lmd, err = -ENOMEM);
+                }
+                
+                sprintf(cl_prof, "%s-clean", lmd->lmd_profile);
+                err = lustre_process_log(lmd, cl_prof, &cfg, 0);
                 if (err < 0) {
-                        CERROR("Unable to process log: %s, doing manual cleanup"
-                               "\n", cln_prof);
+                        CERROR("Unable to process log: %s\n", cl_prof);
                         lustre_manual_cleanup(sbi);
                 }
-
-                OBD_FREE(cln_prof, len);
-        free_lmd:
-                OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
+                OBD_FREE(cl_prof, len);
+        }
+        EXIT;
+free_lmd:
+        if (sbi->ll_instance)
                 OBD_FREE(sbi->ll_instance, strlen(sbi->ll_instance) + 1);
+        OBD_FREE(sbi->ll_lmd, sizeof(*sbi->ll_lmd));
+        return err;
+}
+
+int lustre_fill_super(struct super_block *sb, void *data, int silent)
+{
+        struct lustre_mount_data * lmd = data;
+        char *lov = NULL, *lmv = NULL, *gkc = NULL;
+        struct ll_sb_info *sbi;
+        int err;
+        ENTRY;
+
+        CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
+        if (lmd_bad_magic(lmd))
+                RETURN(-EINVAL);
+
+        sbi = lustre_init_sbi(sb);
+        if (!sbi)
+                RETURN(-ENOMEM);
+
+        sbi->ll_flags |= LL_SBI_READAHEAD;
+
+        err = lustre_process_profile(sb, lmd, &lov, &lmv, &gkc);
+        if (err) {
+                CERROR("Can not process the profile err %d \n", err);
+                GOTO(out_free, err);
         }
+        if (!lov || !lmv) {
+                CERROR("no osc %p or no mdc %p \n", lov, lmv);
+                GOTO(out_free, err = -EINVAL);
+        }
+
+        err = lustre_common_fill_super(sb, lmv, lov, gkc, lmd->lmd_async,
+                                       lmd->lmd_mds_security,
+                                       lmd->lmd_oss_security,
+                                       &lmd->lmd_nllu, lmd->lmd_pag,
+                                       &lmd->lmd_remote_flag);
+
+        if (err)
+                GOTO(out_free, err);
+
+        EXIT;
+out_dev:
+        if (lmv)
+                OBD_FREE(lmv, strlen(lmv) + 1);
+        if (lov)
+                OBD_FREE(lov, strlen(lov) + 1);
+        if (gkc)
+                OBD_FREE(gkc, strlen(gkc) + 1);
+        
+        return err;
+out_free:
+        lustre_clean_profile(sbi, 0);
+        lustre_free_sbi(sb);
+        goto out_dev;
+
+} /* lustre_fill_super */
+
+void lustre_put_super(struct super_block *sb)
+{
+        struct obd_device *obd;
+        struct ll_sb_info *sbi = ll_s2sbi(sb);
+        int force_umount = 0;
+        ENTRY;
 
+        CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
+        obd = class_exp2obd(sbi->ll_md_exp);
+        if (obd)
+                force_umount = obd->obd_no_recov;
+        obd = NULL;
+
+        lustre_common_put_super(sb);
+        lustre_clean_profile(sbi, force_umount);
         lustre_free_sbi(sb);
 
         EXIT;
@@ -748,32 +1047,21 @@ void lustre_put_super(struct super_block *sb)
 
 int ll_process_config_update(struct ll_sb_info *sbi, int clean)
 {
-        struct obd_export *mdc_exp = sbi->ll_mdc_exp;
         struct lustre_mount_data *lmd = sbi->ll_lmd;
-        struct llog_ctxt *ctxt;
-        struct config_llog_instance cfg;
         char *profile = lmd->lmd_profile, *name = NULL;
+        struct config_llog_instance cfg;
         int rc, namelen =  0, version;
+        struct llog_ctxt *ctxt;
         ENTRY;
 
         if (profile == NULL)
                 RETURN(0);
         if (lmd == NULL) {
-                CERROR("Client not mounted with zero-conf; cannot process "
-                       "update log.\n");
+                CERROR("Client not mounted with zero-conf; cannot "
+                       "process update log.\n");
                 RETURN(0);
         }
 
-        rc = ldlm_cli_cancel_unused(mdc_exp->exp_obd->obd_namespace, NULL,
-                                    LDLM_FL_CONFIG_CHANGE, NULL);
-        if (rc != 0)
-                CWARN("ldlm_cli_cancel_unused(mdc): %d\n", rc);
-
-        rc = obd_cancel_unused(sbi->ll_osc_exp, NULL, LDLM_FL_CONFIG_CHANGE,
-                               NULL);
-        if (rc != 0)
-                CWARN("obd_cancel_unused(lov): %d\n", rc);
-
         cfg.cfg_instance = sbi->ll_instance;
         cfg.cfg_uuid = sbi->ll_sb_uuid;
         cfg.cfg_local_nid = lmd->lmd_local_nid;
@@ -793,7 +1081,7 @@ int ll_process_config_update(struct ll_sb_info *sbi, int clean)
 
         CWARN("Applying configuration log %s\n", name);
 
-        ctxt = llog_get_context(&mdc_exp->exp_obd->obd_llogs,
+        ctxt = llog_get_context(&sbi->ll_md_exp->exp_obd->obd_llogs,
                                 LLOG_CONFIG_REPL_CTXT);
         rc = class_config_process_llog(ctxt, name, &cfg);
         if (rc == 0)
@@ -802,13 +1090,15 @@ int ll_process_config_update(struct ll_sb_info *sbi, int clean)
 
         if (rc == 0 && clean == 0) {
                 struct lov_desc desc;
-                int rc, valsize;
+                __u32 valsize;
+                int rc = 0;
+                
                 valsize = sizeof(desc);
-                rc = obd_get_info(sbi->ll_osc_exp, strlen("lovdesc") + 1,
+                rc = obd_get_info(sbi->ll_dt_exp, strlen("lovdesc") + 1,
                                   "lovdesc", &valsize, &desc);
 
-                rc = obd_init_ea_size(mdc_exp,
-                                      obd_size_diskmd(sbi->ll_osc_exp, NULL),
+                rc = obd_init_ea_size(sbi->ll_md_exp,
+                                      obd_size_diskmd(sbi->ll_dt_exp, NULL),
                                       (desc.ld_tgt_count *
                                        sizeof(struct llog_cookie)));
         }
@@ -819,17 +1109,32 @@ int ll_process_config_update(struct ll_sb_info *sbi, int clean)
 struct inode *ll_inode_from_lock(struct ldlm_lock *lock)
 {
         struct inode *inode = NULL;
-        l_lock(&lock->l_resource->lr_namespace->ns_lock);
+
+        /* NOTE: we depend on atomic igrab() -bzzz */
+        lock_res_and_lock(lock);
         if (lock->l_ast_data) {
                 struct ll_inode_info *lli = ll_i2info(lock->l_ast_data);
                 if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
                         inode = igrab(lock->l_ast_data);
                 } else {
-                        CERROR("DEBUG: l_ast_data %p is bogus: magic %x\n",
+                        struct timeval now;
+                        do_gettimeofday(&now);
+                        inode = lock->l_ast_data;
+                        LDLM_ERROR(lock, "granted at %lu.%lu, now %lu.%lu",
+                                   lock->l_enqueued_time.tv_sec,
+                                   lock->l_enqueued_time.tv_usec,
+                                   now.tv_sec, now.tv_usec);
+                        CDEBUG(inode->i_state & I_FREEING ? D_INFO : D_WARNING,
+                               "l_ast_data %p is bogus: magic %0x8\n",
                                lock->l_ast_data, lli->lli_inode_magic);
+                        CDEBUG(D_ERROR, "i_state = 0x%lx, l_ast_data %p is bogus: magic %0x8\n",
+                               inode->i_state, lock->l_ast_data, lli->lli_inode_magic);
+                        inode = NULL;
+                        unlock_res_and_lock(lock);
+                        LBUG();
                 }
         }
-        l_unlock(&lock->l_resource->lr_namespace->ns_lock);
+        unlock_res_and_lock(lock);
         return inode;
 }
 
@@ -845,43 +1150,76 @@ int null_if_equal(struct ldlm_lock *lock, void *data)
         return LDLM_ITER_CONTINUE;
 }
 
+static void remote_acl_free(struct remote_acl *racl);
+
 void ll_clear_inode(struct inode *inode)
 {
-        struct ll_fid fid;
+        struct lustre_id id;
         struct ll_inode_info *lli = ll_i2info(inode);
         struct ll_sb_info *sbi = ll_i2sbi(inode);
+        struct obd_capa *ocapa, *tmp;
         ENTRY;
 
         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
                inode->i_generation, inode);
 
-        lli->lli_inode_magic = LLI_INODE_DEAD;
-        ll_inode2fid(&fid, inode);
+        LASSERT(ll_is_inode_dirty(inode) == 0);
+        ll_inode2id(&id, inode);
+        
         clear_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &(ll_i2info(inode)->lli_flags));
-        md_change_cbdata(sbi->ll_mdc_exp, &fid, null_if_equal, inode);
-
+        md_change_cbdata(sbi->ll_md_exp, &id, null_if_equal, inode);
+
+        LASSERT(!lli->lli_open_fd_write_count);
+        LASSERT(!lli->lli_open_fd_read_count);
+        LASSERT(!lli->lli_open_fd_exec_count);
+        if (lli->lli_mds_write_och)
+                ll_md_real_close(sbi->ll_md_exp, inode, FMODE_WRITE);
+        if (lli->lli_mds_exec_och)
+                ll_md_real_close(sbi->ll_md_exp, inode, FMODE_EXEC);
+        if (lli->lli_mds_read_och)
+                ll_md_real_close(sbi->ll_md_exp, inode, FMODE_READ);
         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);
 
         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;
         }
 
         if (lli->lli_mea) {
-                /* FIXME: change cbdata for mea here */
-                obd_free_memmd(sbi->ll_mdc_exp,
+                obd_free_memmd(sbi->ll_md_exp,
                                (struct lov_stripe_md **) &lli->lli_mea);
                 lli->lli_mea = NULL;
         }
 
+        LASSERT(sbi->ll_crypto_info != NULL);
+        ll_crypto_destroy_inode_key(inode);
+
         if (lli->lli_symlink_name) {
                 OBD_FREE(lli->lli_symlink_name,
                          strlen(lli->lli_symlink_name) + 1);
                 lli->lli_symlink_name = NULL;
         }
 
+        if (lli->lli_posix_acl) {
+                LASSERT(lli->lli_remote_acl == NULL);
+                posix_acl_release(lli->lli_posix_acl);
+                lli->lli_posix_acl = NULL;
+        }
+
+        if (lli->lli_remote_acl) {
+                LASSERT(lli->lli_posix_acl == NULL);
+                remote_acl_free(lli->lli_remote_acl);
+                lli->lli_remote_acl = NULL;
+        }
+
+        list_for_each_entry_safe(ocapa, tmp, &lli->lli_capas, u.client.lli_list)
+                capa_put(ocapa);
+
+        LASSERT(!mapping_has_pages(inode->i_mapping));
+        lli->lli_inode_magic = LLI_INODE_DEAD;
+        
         EXIT;
 }
 
@@ -901,11 +1239,12 @@ void ll_clear_inode(struct inode *inode)
 int ll_setattr_raw(struct inode *inode, struct iattr *attr)
 {
         struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
+        struct ll_inode_info *lli = ll_i2info(inode);
         struct ll_sb_info *sbi = ll_i2sbi(inode);
         struct ptlrpc_request *request = NULL;
-        struct mdc_op_data op_data;
+        struct mdc_op_data *op_data;
         int ia_valid = attr->ia_valid;
-        int rc = 0;
+        int err, rc = 0;
         ENTRY;
 
         CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu\n", inode->i_ino);
@@ -945,35 +1284,71 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
                 CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
                        LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
                        LTIME_S(CURRENT_TIME));
-        if (lsm)
-                attr->ia_valid &= ~ATTR_SIZE;
 
         /* If only OST attributes being set on objects, don't do MDS RPC.
          * In that case, we need to check permissions and update the local
          * inode ourselves so we can call obdo_from_inode() always. */
-        if (ia_valid & (lsm ? ~(ATTR_SIZE | ATTR_FROM_OPEN | ATTR_RAW) : ~0)) {
+        if (ia_valid & (lsm ? ~(ATTR_SIZE | ATTR_FROM_OPEN /*| ATTR_RAW*/) : ~0)) {
                 struct lustre_md md;
-                ll_prepare_mdc_op_data(&op_data, inode, NULL, NULL, 0, 0);
+                void *key = NULL;
+                int  key_size = 0; 
 
-                rc = md_setattr(sbi->ll_mdc_exp, &op_data,
-                                attr, NULL, 0, NULL, 0, &request);
+                OBD_ALLOC(op_data, sizeof(*op_data));
+                if (op_data == NULL)
+                        RETURN(-ENOMEM);
+                ll_inode2mdc_data(op_data, inode, (OBD_MD_FLID | OBD_MD_MEA));
+
+                if (ia_valid & (ATTR_UID | ATTR_GID | ATTR_MODE)) {
+                        rc = ll_crypto_get_mac(inode, attr, NULL, 0, &key, 
+                                               &key_size);
+                        if (rc) {
+                                CERROR("can not get right mac, rc=%d\n", rc);
+                                if (key && key_size)
+                                        OBD_FREE(key, key_size);
+                                RETURN(rc);
+                        }
+                }
+                rc = md_setattr(sbi->ll_md_exp, op_data,
+                                attr, key, key_size, NULL, 0, NULL, 
+                                0, &request);
+                OBD_FREE(op_data, sizeof(*op_data));
+                
+                if (key && key_size) 
+                        OBD_FREE(key, key_size);
                 if (rc) {
                         ptlrpc_req_finished(request);
                         if (rc != -EPERM && rc != -EACCES)
                                 CERROR("md_setattr fails: rc = %d\n", rc);
                         RETURN(rc);
                 }
-
-                rc = mdc_req2lustre_md(sbi->ll_mdc_exp, request, 0, 
-                                       sbi->ll_osc_exp, &md);
+                rc = mdc_req2lustre_md(sbi->ll_md_exp, request, 0, 
+                                       sbi->ll_dt_exp, &md);
                 if (rc) {
                         ptlrpc_req_finished(request);
                         RETURN(rc);
                 }
 
-                /* Won't invoke vmtruncate as we already cleared ATTR_SIZE,
-                 * but needed to set timestamps backwards on utime. */
-                inode_setattr(inode, attr);
+                if (attr->ia_valid & ATTR_SIZE) {
+                        rc = ll_set_trunc_capa(request, 0, inode);
+                        if (rc) {
+                                ptlrpc_req_finished(request);
+                                RETURN(rc);
+                        }
+                }
+
+                /* We call inode_setattr to adjust timestamps, but we first
+                 * clear ATTR_SIZE to avoid invoking vmtruncate.
+                 *
+                 * NB: ATTR_SIZE will only be set at this point if the size
+                 * resides on the MDS, ie, this file has no objects. */
+                attr->ia_valid &= ~ATTR_SIZE;
+
+                /* 
+                 * assigning inode_setattr() to @err to disable warning that
+                 * function's result should be checked by by caller. error is
+                 * impossible here, as vmtruncate() control path is disabled.
+                 */
+                err = inode_setattr(inode, attr);
                 ll_update_inode(inode, &md);
                 ptlrpc_req_finished(request);
 
@@ -990,7 +1365,7 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
                         /* from sys_utime() */
                         if (!(ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET))) {
                                 if (current->fsuid != inode->i_uid &&
-                                    (rc=ll_permission(inode,MAY_WRITE,NULL))!=0)
+                                    (rc = ll_permission(inode, MAY_WRITE, NULL)) != 0)
                                         RETURN(rc);
                         } else {
                                 /* from inode_change_ok() */
@@ -1000,8 +1375,16 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
                         }
                 }
 
-                /* Won't invoke vmtruncate, as we already cleared ATTR_SIZE */
-                inode_setattr(inode, attr);
+                if (lsm)
+                        attr->ia_valid &= ~ATTR_SIZE;
+
+                /* won't invoke vmtruncate, as we already cleared ATTR_SIZE */
+                err = inode_setattr(inode, attr);
+                /* 
+                 * assigning inode_setattr() to @err to disable warning that
+                 * function's result should be checked by by caller. error is
+                 * impossible here, as vmtruncate() control path is disabled.
+                 */
         }
 
         /* We really need to get our PW lock before we change inode->i_size.
@@ -1021,50 +1404,70 @@ int ll_setattr_raw(struct inode *inode, struct iattr *attr)
                 if (attr->ia_size == 0)
                         ast_flags = LDLM_AST_DISCARD_DATA;
 
-                /* bug 1639: avoid write/truncate i_sem/DLM deadlock */
-                LASSERT(atomic_read(&inode->i_sem.count) <= 0);
-                up(&inode->i_sem);
                 rc = ll_extent_lock(NULL, inode, lsm, LCK_PW, &policy, &lockh,
                                     ast_flags, &ll_i2sbi(inode)->ll_seek_stime);
-                down(&inode->i_sem);
+
                 if (rc != 0)
                         RETURN(rc);
 
+                down(&lli->lli_size_sem);
+               lli->lli_size_pid = current->pid;
                 rc = vmtruncate(inode, attr->ia_size);
+                if (rc != 0) {
+                        LASSERT(atomic_read(&lli->lli_size_sem.count) <= 0);
+                       lli->lli_size_pid = 0;
+                        up(&lli->lli_size_sem);
+                }
 
-                /* We need to drop the semaphore here, because this unlock may
-                 * result in a cancellation, which will need the i_sem */
-                up(&inode->i_sem);
-                /* unlock now as we don't mind others file lockers racing with
-                 * the mds updates below? */
                 err = ll_extent_unlock(NULL, inode, lsm, LCK_PW, &lockh);
-                down(&inode->i_sem);
                 if (err) {
                         CERROR("ll_extent_unlock failed: %d\n", err);
                         if (!rc)
                                 rc = err;
                 }
-        } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET)) {
-                struct obdo oa;
+        } else if (ia_valid & (ATTR_MTIME | ATTR_MTIME_SET | ATTR_UID | ATTR_GID)) {
+                struct obdo *oa = NULL;
 
                 CDEBUG(D_INODE, "set mtime on OST inode %lu to %lu\n",
                        inode->i_ino, LTIME_S(attr->ia_mtime));
-                oa.o_id = lsm->lsm_object_id;
-                oa.o_gr = lsm->lsm_object_gr;
-                oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
-                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);
+
+                oa = obdo_alloc();
+                if (oa == NULL)
+                        RETURN(-ENOMEM);
+
+                oa->o_id = lsm->lsm_object_id;
+                oa->o_gr = lsm->lsm_object_gr;
+                oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
+
+                /* adding uid and gid, needed for quota */
+                if (ia_valid & ATTR_UID) {
+                        oa->o_uid = inode->i_uid;
+                        oa->o_valid |= OBD_MD_FLUID;
+                }
+
+                if (ia_valid & ATTR_GID) {
+                        oa->o_gid = inode->i_gid;
+                        oa->o_valid |= OBD_MD_FLGID;
+                }
+
+                *(obdo_id(oa)) = lli->lli_id;
+                oa->o_valid |= OBD_MD_FLIFID;
+
+                obdo_from_inode(oa, inode, OBD_MD_FLTYPE | OBD_MD_FLATIME |
+                                OBD_MD_FLMTIME | OBD_MD_FLCTIME);
+                rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL, NULL);
+                obdo_free(oa);
                 if (rc)
-                        CERROR("obd_setattr fails: rc=%d\n", rc);
+                        CERROR("obd_setattr fails: rc = %d\n", rc);
         }
+
         RETURN(rc);
 }
 
 int ll_setattr(struct dentry *de, struct iattr *attr)
 {
-        LBUG(); /* code is unused, but leave this in case of VFS changes */
-        RETURN(-ENOSYS);
+        LASSERT(de->d_inode);
+        return ll_setattr_raw(de->d_inode, attr);
 }
 
 int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
@@ -1075,9 +1478,9 @@ int ll_statfs_internal(struct super_block *sb, struct obd_statfs *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);
         if (rc) {
-                CERROR("mdc_statfs fails: rc = %d\n", rc);
+                CERROR("obd_statfs fails: rc = %d\n", rc);
                 RETURN(rc);
         }
 
@@ -1086,7 +1489,7 @@ int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
         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(class_exp2obd(sbi->ll_dt_exp), &obd_osfs, max_age);
         if (rc) {
                 CERROR("obd_statfs fails: rc = %d\n", rc);
                 RETURN(rc);
@@ -1147,16 +1550,438 @@ int ll_statfs(struct super_block *sb, struct kstatfs *sfs)
         return 0;
 }
 
+
+/********************************
+ * remote acl                   *
+ ********************************/
+
+static struct remote_acl *remote_acl_alloc(void)
+{
+        struct remote_acl *racl;
+        int i;
+
+        OBD_ALLOC(racl, sizeof(*racl));
+        if (!racl)
+                return NULL;
+
+        spin_lock_init(&racl->ra_lock);
+        init_MUTEX(&racl->ra_update_sem);
+
+        for (i = 0; i < REMOTE_ACL_HASHSIZE; i++)
+                INIT_LIST_HEAD(&racl->ra_perm_cache[i]);
+
+        return racl;
+}
+
+/*
+ * caller should guarantee no race here.
+ */
+static void remote_perm_flush_xperms(struct lustre_remote_perm *perm)
+{
+        struct remote_perm_setxid *xperm;
+
+        while (!list_empty(&perm->lrp_setxid_perms)) {
+                xperm = list_entry(perm->lrp_setxid_perms.next,
+                                   struct remote_perm_setxid,
+                                   list);
+                list_del(&xperm->list);
+                OBD_FREE(xperm, sizeof(*xperm));
+        }
+}
+
+/*
+ * caller should guarantee no race here.
+ */
+static void remote_acl_flush(struct remote_acl *racl)
+{
+        struct list_head *head;
+        struct lustre_remote_perm *perm, *tmp;
+        int i;
+
+        for (i = 0; i < REMOTE_ACL_HASHSIZE; i++) {
+                head = &racl->ra_perm_cache[i];
+
+                list_for_each_entry_safe(perm, tmp, head, lrp_list) {
+                        remote_perm_flush_xperms(perm);
+                        list_del(&perm->lrp_list);
+                        OBD_FREE(perm, sizeof(*perm));
+                }
+        }
+}
+
+static void remote_acl_free(struct remote_acl *racl)
+{
+        if (!racl)
+                return;
+
+        down(&racl->ra_update_sem);
+        spin_lock(&racl->ra_lock);
+        remote_acl_flush(racl);
+        spin_unlock(&racl->ra_lock);
+        up(&racl->ra_update_sem);
+
+        OBD_FREE(racl, sizeof(*racl));
+}
+
+static inline int remote_acl_hashfunc(__u32 id)
+{
+        return (id & (REMOTE_ACL_HASHSIZE - 1));
+}
+
+static
+int __remote_acl_check(struct remote_acl *racl, unsigned int *perm)
+{
+        struct list_head *head;
+        struct lustre_remote_perm *lperm;
+        struct remote_perm_setxid *xperm;
+        int found = 0, rc = -ENOENT;
+
+        LASSERT(racl);
+        head = &racl->ra_perm_cache[remote_acl_hashfunc(current->uid)];
+        spin_lock(&racl->ra_lock);
+
+        list_for_each_entry(lperm, head, lrp_list) {
+                if (lperm->lrp_auth_uid == current->uid) {
+                        found = 1;
+                        break;
+                }
+        }
+
+        if (!found)
+                goto out;
+
+        if (lperm->lrp_auth_uid == current->fsuid &&
+            lperm->lrp_auth_gid == current->fsgid) {
+                if (lperm->lrp_valid) {
+                        *perm = lperm->lrp_perm;
+                        rc = 0;
+                }
+                goto out;
+        } else if ((!lperm->lrp_setuid &&
+                    lperm->lrp_auth_uid != current->fsuid) ||
+                   (!lperm->lrp_setgid &&
+                    lperm->lrp_auth_gid != current->fsgid))  {
+                *perm = 0;
+                rc = 0;
+                goto out;
+        }
+
+        list_for_each_entry(xperm, &lperm->lrp_setxid_perms, list) {
+                if (xperm->uid == current->fsuid &&
+                    xperm->gid == current->fsgid) {
+                        *perm = xperm->perm;
+                        rc = 0;
+                        goto out;
+                }
+        }
+
+out:
+        spin_unlock(&racl->ra_lock);
+        return rc;
+}
+
+static
+int __remote_acl_update(struct remote_acl *racl,
+                        struct mds_remote_perm *mperm,
+                        struct lustre_remote_perm *lperm,
+                        struct remote_perm_setxid *xperm)
+{
+        struct list_head *head;
+        struct lustre_remote_perm *lp;
+        struct remote_perm_setxid *xp;
+        int found = 0, setuid = 0, setgid = 0;
+
+        LASSERT(racl);
+        LASSERT(mperm);
+        LASSERT(lperm);
+        LASSERT(current->uid == mperm->mrp_auth_uid);
+
+        if (current->fsuid != mperm->mrp_auth_uid)
+                setuid = 1;
+        if (current->fsgid != mperm->mrp_auth_gid)
+                setgid = 1;
+
+        head = &racl->ra_perm_cache[remote_acl_hashfunc(current->uid)];
+        spin_lock(&racl->ra_lock);
+
+        list_for_each_entry(lp, head, lrp_list) {
+                if (lp->lrp_auth_uid == current->uid) {
+                        found = 1;
+                        break;
+                }
+        }
+
+        if (found) {
+                OBD_FREE(lperm, sizeof(*lperm));
+
+                if (!lp->lrp_valid && !setuid && !setgid) {
+                        lp->lrp_perm = mperm->mrp_perm;
+                        lp->lrp_valid = 1;
+                }
+
+                /* sanity check for changes of setxid rules */
+                if ((lp->lrp_setuid != 0) != (mperm->mrp_allow_setuid != 0)) {
+                        CWARN("setuid changes: %d => %d\n",
+                              (lp->lrp_setuid != 0),
+                              (mperm->mrp_allow_setuid != 0));
+                        lp->lrp_setuid = (mperm->mrp_allow_setuid != 0);
+                }
+
+                if ((lp->lrp_setgid != 0) != (mperm->mrp_allow_setgid != 0)) {
+                        CWARN("setgid changes: %d => %d\n",
+                              (lp->lrp_setgid != 0),
+                              (mperm->mrp_allow_setgid != 0));
+                        lp->lrp_setgid = (mperm->mrp_allow_setgid != 0);
+                }
+
+                if (!lp->lrp_setuid && !lp->lrp_setgid &&
+                    !list_empty(&lp->lrp_setxid_perms)) {
+                        remote_perm_flush_xperms(lp);
+                }
+        } else {
+                /* initialize lperm and linked into hashtable
+                 */
+                INIT_LIST_HEAD(&lperm->lrp_setxid_perms);
+                lperm->lrp_auth_uid = mperm->mrp_auth_uid;
+                lperm->lrp_auth_gid = mperm->mrp_auth_gid;
+                lperm->lrp_setuid = (mperm->mrp_allow_setuid != 0);
+                lperm->lrp_setgid = (mperm->mrp_allow_setgid != 0);
+                list_add(&lperm->lrp_list, head);
+
+                if (!setuid && !setgid) {
+                        /* in this case, i'm the authenticated user,
+                         * and mrp_perm is for me.
+                         */
+                        lperm->lrp_perm = mperm->mrp_perm;
+                        lperm->lrp_valid = 1;
+                        spin_unlock(&racl->ra_lock);
+
+                        if (xperm)
+                                OBD_FREE(xperm, sizeof(*xperm));
+                        return 0;
+                }
+
+                lp = lperm;
+                /* fall through */
+        }
+
+        LASSERT(lp->lrp_setuid || lp->lrp_setgid ||
+                list_empty(&lp->lrp_setxid_perms));
+
+        /* if no xperm supplied, we are all done here */
+        if (!xperm) {
+                spin_unlock(&racl->ra_lock);
+                return 0;
+        }
+
+        /* whether we allow setuid/setgid */
+        if ((!lp->lrp_setuid && setuid) || (!lp->lrp_setgid && setgid)) {
+                OBD_FREE(xperm, sizeof(*xperm));
+                spin_unlock(&racl->ra_lock);
+                return 0;
+        }
+
+        /* traverse xperm list */
+        list_for_each_entry(xp, &lp->lrp_setxid_perms, list) {
+                if (xp->uid == current->fsuid &&
+                    xp->gid == current->fsgid) {
+                        if (xp->perm != mperm->mrp_perm) {
+                                /* actually this should not happen */
+                                CWARN("perm changed: %o => %o\n",
+                                      xp->perm, mperm->mrp_perm);
+                                xp->perm = mperm->mrp_perm;
+                        }
+                        OBD_FREE(xperm, sizeof(*xperm));
+                        spin_unlock(&racl->ra_lock);
+                        return 0;
+                }
+        }
+
+        /* finally insert this xperm */
+        xperm->uid = current->fsuid;
+        xperm->gid = current->fsgid;
+        xperm->perm = mperm->mrp_perm;
+        list_add(&xperm->list, &lp->lrp_setxid_perms);
+
+        spin_unlock(&racl->ra_lock);
+        return 0;
+}
+
+/*
+ * remote_acl semaphore must be held by caller
+ */
+static
+int remote_acl_update_locked(struct remote_acl *racl,
+                             struct mds_remote_perm *mperm)
+{
+        struct lustre_remote_perm *lperm;
+        struct remote_perm_setxid *xperm;
+        int setuid = 0, setgid = 0;
+
+        might_sleep();
+
+        if (current->uid != mperm->mrp_auth_uid) {
+                CERROR("current uid %u while authenticated as %u\n",
+                       current->uid, mperm->mrp_auth_uid);
+                return -EINVAL;
+        }
+
+        if (current->fsuid != mperm->mrp_auth_uid)
+                setuid = 1;
+        if (current->fsgid == mperm->mrp_auth_gid)
+                setgid = 1;
+
+        OBD_ALLOC(lperm, sizeof(*lperm));
+        if (!lperm)
+                return -ENOMEM;
+
+        if ((setuid || setgid) &&
+            !(setuid && !mperm->mrp_allow_setuid) &&
+            !(setgid && !mperm->mrp_allow_setgid)) {
+                OBD_ALLOC(xperm, sizeof(*xperm));
+                if (!xperm) {
+                        OBD_FREE(lperm, sizeof(*lperm));
+                        return -ENOMEM;
+                }
+        } else
+                xperm = NULL;
+
+        return __remote_acl_update(racl, mperm, lperm, xperm);
+}
+
+/*
+ * return -EACCES at any error cases
+ */
+int ll_remote_acl_permission(struct inode *inode, int mode)
+{
+        struct ll_sb_info *sbi = ll_i2sbi(inode);
+        struct remote_acl *racl = ll_i2info(inode)->lli_remote_acl;
+        struct ptlrpc_request *req = NULL;
+        struct lustre_id id;
+        struct mds_remote_perm *mperm;
+        int rc = -EACCES, perm;
+
+        if (!racl)
+                return -EACCES;
+
+        if (__remote_acl_check(racl, &perm) == 0) {
+                return ((perm & mode) == mode ? 0 : -EACCES);
+        }
+
+        might_sleep();
+
+        /* doing update
+         */
+        down(&racl->ra_update_sem);
+
+        /* we might lose the race when obtain semaphore,
+         * so check again.
+         */
+        if (__remote_acl_check(racl, &perm) == 0) {
+                if ((perm & mode) == mode)
+                        rc = 0;
+                goto out;
+        }
+
+        /* really fetch from mds
+         */
+        ll_inode2id(&id, inode);
+        if (md_access_check(sbi->ll_md_exp, &id, &req))
+                goto out;
+
+        /* status non-zero indicate there's more apparent error
+         * detected by mds, e.g. didn't allow this user at all.
+         * we simply ignore and didn't cache it.
+         */
+        if (req->rq_repmsg->status)
+                goto out;
+
+        mperm = lustre_swab_repbuf(req, 1, sizeof(*mperm),
+                                   lustre_swab_remote_perm);
+        LASSERT(mperm);
+        LASSERT_REPSWABBED(req, 1);
+
+        if ((mperm->mrp_perm & mode) == mode)
+                rc = 0;
+
+        remote_acl_update_locked(racl, mperm);
+out:
+        if (req)
+                ptlrpc_req_finished(req);
+
+        up(&racl->ra_update_sem);
+        return rc;
+}
+
+int ll_remote_acl_update(struct inode *inode, struct mds_remote_perm *perm)
+{
+        struct remote_acl *racl = ll_i2info(inode)->lli_remote_acl;
+        int rc;
+
+        LASSERT(perm);
+
+        if (!racl)
+                return -EACCES;
+
+        down(&racl->ra_update_sem);
+        rc = remote_acl_update_locked(racl, perm);
+        up(&racl->ra_update_sem);
+
+        return rc;
+}
+
+void ll_inode_invalidate_acl(struct inode *inode)
+{
+        struct ll_sb_info *sbi = ll_i2sbi(inode);
+        struct ll_inode_info *lli = ll_i2info(inode);
+
+        if (sbi->ll_remote) {
+                struct remote_acl *racl = lli->lli_remote_acl;
+
+                LASSERT(!lli->lli_posix_acl);
+                if (racl) {
+                        down(&racl->ra_update_sem);
+                        spin_lock(&racl->ra_lock);
+                        remote_acl_flush(lli->lli_remote_acl);
+                        spin_unlock(&racl->ra_lock);
+                        up(&racl->ra_update_sem);
+                }
+        } else {
+                /* we can't invalide acl here: suppose we touch a new file
+                 * under a dir, blocking ast on dir will lead to open failure
+                 * on client, although succeed on mds. it's kind of weird,
+                 * the real fix i think is improve client-vfs interaction.
+                 *
+                 * currently we just do nothing here.
+                 */
+                return;
+
+                LASSERT(!lli->lli_remote_acl);
+                spin_lock(&lli->lli_lock);
+                posix_acl_release(lli->lli_posix_acl);
+                lli->lli_posix_acl = NULL;
+                spin_unlock(&lli->lli_lock);
+        }
+}
+
 void ll_update_inode(struct inode *inode, struct lustre_md *md)
 {
         struct ll_inode_info *lli = ll_i2info(inode);
-        struct mds_body *body = md->body;
         struct lov_stripe_md *lsm = md->lsm;
+        struct mds_body *body = md->body;
         struct mea *mea = md->mea;
+        struct posix_acl *posix_acl = md->posix_acl;
+        struct ll_sb_info *sbi = ll_i2sbi(inode);
+        struct lustre_key *mkey = md->key;
         ENTRY;
 
         LASSERT((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
-        LASSERT((mea != NULL) == ((body->valid & OBD_MD_FLDIREA) != 0));
+
+        if (md->lsm && md->lsm->lsm_magic != LOV_MAGIC) {
+                /* check for default striping info for dir. */
+                LASSERT((mea != NULL) == ((body->valid & OBD_MD_FLDIREA) != 0));
+        }
+        
         if (lsm != NULL) {
                 LASSERT(lsm->lsm_object_gr > 0);
                 if (lli->lli_smd == NULL) {
@@ -1192,7 +2017,7 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
                 LASSERTF(lsm->lsm_xfersize != 0, "%lu\n", lsm->lsm_xfersize);
                 inode->i_blksize = min(lsm->lsm_xfersize, LL_MAX_BLKSIZE);
                 if (lli->lli_smd != lsm)
-                        obd_free_memmd(ll_i2obdexp(inode), &lsm);
+                        obd_free_memmd(ll_i2dtexp(inode), &lsm);
         }
 
         if (mea != NULL) {
@@ -1206,13 +2031,42 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
                         }
                 }
                 if (lli->lli_mea != mea)
-                        obd_free_memmd(ll_i2mdcexp(inode),
-                                        (struct lov_stripe_md **) &mea);
-                        
+                        obd_free_memmd(ll_i2mdexp(inode),
+                                       (struct lov_stripe_md **) &mea);
+        }
+
+        if (body->valid & OBD_MD_FID)
+                id_assign_fid(&lli->lli_id, &body->id1);
+        
+       if (body->valid & OBD_MD_FLID)
+               id_ino(&lli->lli_id) = id_ino(&body->id1);
+
+       if (body->valid & OBD_MD_FLGENER)
+               id_gen(&lli->lli_id) = id_gen(&body->id1);
+
+        /* local/remote ACL */
+        if (sbi->ll_remote) {
+                LASSERT(md->posix_acl == NULL);
+                if (md->remote_perm) {
+                        ll_remote_acl_update(inode, md->remote_perm);
+                        OBD_FREE(md->remote_perm, sizeof(*md->remote_perm));
+                        md->remote_perm = NULL;
+                }
+        } else {
+                LASSERT(md->remote_perm == NULL);
+                spin_lock(&lli->lli_lock);
+                if (posix_acl != NULL) {
+                        if (lli->lli_posix_acl != NULL)
+                                posix_acl_release(lli->lli_posix_acl);
+                        lli->lli_posix_acl = posix_acl;
+                }
+                spin_unlock(&lli->lli_lock);
         }
 
         if (body->valid & OBD_MD_FLID)
-                inode->i_ino = body->ino;
+                inode->i_ino = id_ino(&body->id1);
+        if (body->valid & OBD_MD_FLGENER)
+                inode->i_generation = id_gen(&body->id1);
         if (body->valid & OBD_MD_FLATIME)
                 LTIME_S(inode->i_atime) = body->atime;
         if (body->valid & OBD_MD_FLMTIME &&
@@ -1224,10 +2078,14 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
         if (body->valid & OBD_MD_FLCTIME &&
             body->ctime > LTIME_S(inode->i_ctime))
                 LTIME_S(inode->i_ctime) = body->ctime;
-        if (body->valid & OBD_MD_FLMODE)
-                inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
-        if (body->valid & OBD_MD_FLTYPE)
-                inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
+        if (body->valid & OBD_MD_FLMODE) {
+                inode->i_mode = (inode->i_mode & S_IFMT) |
+                        (body->mode & ~S_IFMT);
+        }
+        if (body->valid & OBD_MD_FLTYPE) {
+                inode->i_mode = (inode->i_mode & ~S_IFMT) |
+                        (body->mode & S_IFMT);
+        }
         if (body->valid & OBD_MD_FLUID)
                 inode->i_uid = body->uid;
         if (body->valid & OBD_MD_FLGID)
@@ -1236,8 +2094,6 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
                 inode->i_flags = body->flags;
         if (body->valid & OBD_MD_FLNLINK)
                 inode->i_nlink = body->nlink;
-        if (body->valid & OBD_MD_FLGENER)
-                inode->i_generation = body->generation;
         if (body->valid & OBD_MD_FLRDEV)
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
                 inode->i_rdev = body->rdev;
@@ -1251,12 +2107,24 @@ void ll_update_inode(struct inode *inode, struct lustre_md *md)
 
         if (body->valid & OBD_MD_FLSIZE)
                 set_bit(LLI_F_HAVE_MDS_SIZE_LOCK, &lli->lli_flags);
-        
-        lli->lli_mds = body->mds;
+
+        if (body->valid & OBD_MD_FLAUDIT) {
+                struct ll_sb_info * sbi = ll_s2sbi(inode->i_sb);
+                if (IS_AUDIT_OP(body->audit, AUDIT_FS))
+                        sbi->ll_audit_mask = body->audit;
+                else
+                        lli->lli_audit_mask = body->audit;
+        }
+
+        if (mkey != NULL) {
+                LASSERT(body->valid & OBD_MD_FLKEY);
+                ll_crypto_init_inode_key(inode, mkey);  
+        }
+
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
-        inode->i_dev = (kdev_t) body->mds;
+        inode->i_dev = (kdev_t)id_group(&lli->lli_id);
 #endif
-        LASSERT(body->mds < 1000);
+        LASSERT(id_fid(&lli->lli_id) != 0);
 }
 
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
@@ -1279,6 +2147,11 @@ void ll_read_inode2(struct inode *inode, void *opaque)
 
         LASSERT(!lli->lli_smd);
 
+        if (ll_i2sbi(inode)->ll_remote) {
+                lli->lli_remote_acl = remote_acl_alloc();
+                /* if failed alloc, nobody will be able to access this inode */
+        }
+
         /* Core attributes from the MDS first.  This is a new inode, and
          * the VFS doesn't zero times in the core inode so we have to do
          * it ourselves.  They will be overwritten by either MDS or OST
@@ -1341,16 +2214,16 @@ void ll_read_inode2(struct inode *inode, void *opaque)
 
 void ll_delete_inode(struct inode *inode)
 {
-        int rc;
-        struct ll_fid fid;
         struct ll_sb_info *sbi = ll_i2sbi(inode);
+        struct lustre_id id;
+        int rc;
         ENTRY;
-        
-        ll_inode2fid(&fid, inode);
 
-        rc = md_delete_object(sbi->ll_mdc_exp, &fid);
+        ll_inode2id(&id, inode);
+
+        rc = md_delete_inode(sbi->ll_md_exp, &id);
         if (rc) {
-                CERROR("md_delete_object() failed, error %d.\n",
+                CERROR("md_delete_inode() failed, error %d\n", 
                        rc);
         }
 
@@ -1368,12 +2241,13 @@ int ll_iocontrol(struct inode *inode, struct file *file,
 
         switch(cmd) {
         case EXT3_IOC_GETFLAGS: {
-                struct ll_fid fid;
-                unsigned long valid = OBD_MD_FLFLAGS;
+                struct lustre_id id;
+                __u64 valid = OBD_MD_FLFLAGS;
                 struct mds_body *body;
 
-                ll_inode2fid(&fid, inode);
-                rc = md_getattr(sbi->ll_mdc_exp, &fid, valid, 0, &req);
+                ll_inode2id(&id, inode);
+                rc = md_getattr(sbi->ll_md_exp, &id, valid, NULL, NULL,
+                                0, 0, NULL, &req);
                 if (rc) {
                         CERROR("failure %d inode %lu\n", rc, inode->i_ino);
                         RETURN(-abs(rc));
@@ -1393,7 +2267,7 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                 RETURN(put_user(flags, (int *)arg));
         }
         case EXT3_IOC_SETFLAGS: {
-                struct mdc_op_data op_data;
+                struct mdc_op_data *op_data;
                 struct iattr attr;
                 struct obdo *oa;
                 struct lov_stripe_md *lsm = ll_i2info(inode)->lli_smd;
@@ -1405,14 +2279,20 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                 if (!oa)
                         RETURN(-ENOMEM);
 
-                ll_prepare_mdc_op_data(&op_data, inode, NULL, NULL, 0, 0);
+                OBD_ALLOC(op_data, sizeof(*op_data));
+                if (op_data == NULL) {
+                        obdo_free(oa);
+                        RETURN(-ENOMEM);
+                }
+                ll_inode2mdc_data(op_data, inode, (OBD_MD_FLID | OBD_MD_MEA));
 
                 memset(&attr, 0x0, sizeof(attr));
                 attr.ia_attr_flags = flags;
                 attr.ia_valid |= ATTR_ATTR_FLAG;
 
-                rc = md_setattr(sbi->ll_mdc_exp, &op_data,
-                                &attr, NULL, 0, NULL, 0, &req);
+                rc = md_setattr(sbi->ll_md_exp, op_data,
+                                &attr, NULL, 0, NULL, 0, NULL, 0, &req);
+                OBD_FREE(op_data, sizeof(*op_data));
                 if (rc) {
                         ptlrpc_req_finished(req);
                         if (rc != -EPERM && rc != -EACCES)
@@ -1425,9 +2305,11 @@ int ll_iocontrol(struct inode *inode, struct file *file,
                 oa->o_id = lsm->lsm_object_id;
                 oa->o_gr = lsm->lsm_object_gr;
                 oa->o_flags = flags;
-                oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
+                *(obdo_id(oa)) = ll_i2info(inode)->lli_id;
+                oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | OBD_MD_FLGROUP 
+                              | OBD_MD_FLIFID;
 
-                rc = obd_setattr(sbi->ll_osc_exp, oa, lsm, NULL);
+                rc = obd_setattr(sbi->ll_dt_exp, oa, lsm, NULL, NULL);
                 obdo_free(oa);
                 if (rc) {
                         if (rc != -EPERM && rc != -EACCES)
@@ -1457,40 +2339,42 @@ int ll_iocontrol(struct inode *inode, struct file *file,
         RETURN(0);
 }
 
+/* this is only called in the case of forced umount. */
 void ll_umount_begin(struct super_block *sb)
 {
         struct ll_sb_info *sbi = ll_s2sbi(sb);
-        struct obd_device *obd;
         struct obd_ioctl_data ioc_data = { 0 };
+        struct obd_device *obd;
         ENTRY;
      
         CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
                sb->s_count, atomic_read(&sb->s_active));
         
-        obd = class_exp2obd(sbi->ll_mdc_exp);
+        obd = class_exp2obd(sbi->ll_md_exp);
         if (obd == NULL) {
                 CERROR("Invalid MDC connection handle "LPX64"\n",
-                       sbi->ll_mdc_exp->exp_handle.h_cookie);
+                       sbi->ll_md_exp->exp_handle.h_cookie);
                 EXIT;
                 return;
         }
         obd->obd_no_recov = 1;
-        obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_mdc_exp, sizeof ioc_data,
-                      &ioc_data, NULL);
+        obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
+                      sizeof(ioc_data), &ioc_data, NULL);
 
-        obd = class_exp2obd(sbi->ll_osc_exp);
+        obd = class_exp2obd(sbi->ll_dt_exp);
         if (obd == NULL) {
                 CERROR("Invalid LOV connection handle "LPX64"\n",
-                       sbi->ll_osc_exp->exp_handle.h_cookie);
+                       sbi->ll_dt_exp->exp_handle.h_cookie);
                 EXIT;
                 return;
         }
 
         obd->obd_no_recov = 1;
-        obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_osc_exp, sizeof ioc_data,
-                      &ioc_data, NULL);
+        obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
+                      sizeof(ioc_data), &ioc_data, NULL);
 
-        /* Really, we'd like to wait until there are no requests outstanding,
+        /*
+         * really, we'd like to wait until there are no requests outstanding,
          * and then continue.  For now, we just invalidate the requests,
          * schedule, and hope.
          */
@@ -1499,14 +2383,14 @@ void ll_umount_begin(struct super_block *sb)
         EXIT;
 }
 
-int ll_prep_inode(struct obd_export *osc_exp, struct obd_export *mdc_exp,
+int ll_prep_inode(struct obd_export *dt_exp, struct obd_export *md_exp,
                   struct inode **inode, struct ptlrpc_request *req,
                   int offset, struct super_block *sb)
 {
         struct lustre_md md;
         int rc = 0;
 
-        rc = mdc_req2lustre_md(mdc_exp, req, offset, osc_exp, &md);
+        rc = mdc_req2lustre_md(md_exp, req, offset, dt_exp, &md);
         if (rc)
                 RETURN(rc);
 
@@ -1514,13 +2398,13 @@ int ll_prep_inode(struct obd_export *osc_exp, struct obd_export *mdc_exp,
                 ll_update_inode(*inode, &md);
         } else {
                 LASSERT(sb);
-                *inode = ll_iget(sb, md.body->ino, &md);
+                *inode = ll_iget(sb, id_ino(&md.body->id1), &md);
                 if (*inode == NULL || is_bad_inode(*inode)) {
                         /* free the lsm if we allocated one above */
                         if (md.lsm != NULL)
-                                obd_free_memmd(osc_exp, &md.lsm);
+                                obd_free_memmd(dt_exp, &md.lsm);
                         if (md.mea != NULL)
-                                obd_free_memmd(mdc_exp,
+                                obd_free_memmd(md_exp,
                                                (struct lov_stripe_md**)&md.mea);
                         rc = -ENOMEM;
                         CERROR("new_inode -fatal: rc %d\n", rc);
@@ -1529,3 +2413,73 @@ int ll_prep_inode(struct obd_export *osc_exp, struct obd_export *mdc_exp,
 
         RETURN(rc);
 }
+
+int ll_show_options(struct seq_file *m, struct vfsmount *mnt)
+{
+        struct ll_sb_info *sbi = ll_s2sbi(mnt->mnt_sb);
+        struct lustre_mount_data *lmd = sbi->ll_lmd;
+
+        if (lmd) {
+                seq_printf(m, ",mds_sec=%s,oss_sec=%s",
+                           lmd->lmd_mds_security, lmd->lmd_oss_security);
+        }
+        seq_printf(m, ",%s", sbi->ll_remote ? "remote" : "local");
+        if (sbi->ll_remote && lmd)
+                seq_printf(m, ",nllu=%u:%u", lmd->lmd_nllu, lmd->lmd_nllg);
+
+        if (lmd && lmd->lmd_pag)
+                seq_printf(m, ",pag");
+
+        return 0;
+}
+
+int ll_get_fid(struct obd_export *exp, struct lustre_id *idp,
+               char *filename, struct lustre_id *ret)
+{
+        struct ptlrpc_request *request = NULL;
+        struct mds_body *body;
+        int rc;
+
+        rc = md_getattr_lock(exp, idp, filename, strlen(filename) + 1,
+                             OBD_MD_FID, 0, &request);
+        if (rc < 0) {
+                CDEBUG(D_INFO, "md_getattr_lock failed on %s: rc %d\n",
+                       filename, rc);
+                return rc;
+        }
+
+        body = lustre_msg_buf(request->rq_repmsg, 0, sizeof(*body));
+        LASSERT(body != NULL);
+        LASSERT_REPSWABBED(request, 0);
+
+        *ret = body->id1;
+        ptlrpc_req_finished(request);
+
+        return rc;
+}
+int ll_flush_cred(struct inode *inode)
+{
+        struct ll_sb_info *sbi = ll_i2sbi(inode);
+        int rc = 0;
+
+        /* XXX to avoid adding api, we simply use set_info() interface
+         * to notify underlying obds. set_info() is more like a ioctl() now...
+         */
+        if (sbi->ll_md_exp) {
+                rc = obd_set_info(sbi->ll_md_exp,
+                                  strlen("flush_cred"), "flush_cred",
+                                  0, NULL);
+                if (rc)
+                        return rc;
+        }
+
+        if (sbi->ll_dt_exp) {
+                rc = obd_set_info(sbi->ll_dt_exp,
+                                  strlen("flush_cred"), "flush_cred",
+                                  0, NULL);
+                if (rc)
+                        return rc;
+        }
+
+        return rc;
+}