Whamcloud - gitweb
LU-1302 llog: pass lu_env as parametr in llog functions
[fs/lustre-release.git] / lustre / mgs / mgs_llog.c
index 46b9569..98a1108 100644 (file)
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, Whamcloud, Inc.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -40,9 +40,6 @@
  * Author: Nathan Rutman <nathan@clusterfs.com>
  */
 
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
 #define DEBUG_SUBSYSTEM S_MGS
 #define D_MGS D_CONFIG
 
@@ -89,7 +86,7 @@ int class_dentry_readdir(struct obd_device *obd, struct dentry *dir,
                 GOTO(out_pop, rc = PTR_ERR(mnt));
         }
 
-        file = dentry_open(dentry, mnt, O_RDONLY);
+        file = ll_dentry_open(dentry, mnt, O_RDONLY, current_cred());
         if (IS_ERR(file))
                 /* dentry_open_it() drops the dentry, mnt refs */
                 GOTO(out_pop, rc = PTR_ERR(file));
@@ -139,10 +136,10 @@ struct mgs_fsdb_handler_data
 */
 /* It might be better to have a separate db file, instead of parsing the info
    out of the client log.  This is slow and potentially error-prone. */
-static int mgs_fsdb_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
-                            void *data)
+static int mgs_fsdb_handler(const struct lu_env *env, struct llog_handle *llh,
+                           struct llog_rec_hdr *rec, void *data)
 {
-        struct mgs_fsdb_handler_data *d = (struct mgs_fsdb_handler_data *) data;
+       struct mgs_fsdb_handler_data *d = data;
         struct fs_db *fsdb = d->fsdb;
         int cfg_len = rec->lrh_len;
         char *cfg_buf = (char*) (rec + 1);
@@ -193,6 +190,7 @@ static int mgs_fsdb_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
                 rc = 0;
                 CDEBUG(D_MGS, "MDT index is %u\n", index);
                 cfs_set_bit(index, fsdb->fsdb_mdt_index_map);
+                fsdb->fsdb_mdt_count ++;
         }
 
         /* COMPAT_146 */
@@ -200,7 +198,7 @@ static int mgs_fsdb_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
         /* #01 L attach 0:lov_mdsA 1:lov 2:cdbe9_lov_mdsA_dc8cf7f3bb */
         if ((fsdb->fsdb_gen == 0) && (lcfg->lcfg_command == LCFG_ATTACH) &&
             (strcmp(lustre_cfg_string(lcfg, 1), LUSTRE_LOV_NAME) == 0)) {
-                fsdb->fsdb_flags |= FSDB_OLDLOG14;
+                cfs_set_bit(FSDB_OLDLOG14, &fsdb->fsdb_flags);
                 name_destroy(&fsdb->fsdb_clilov);
                 rc = name_create(&fsdb->fsdb_clilov,
                                  lustre_cfg_string(lcfg, 0), "");
@@ -213,7 +211,7 @@ static int mgs_fsdb_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
         if ((fsdb->fsdb_gen == 0) && (lcfg->lcfg_command == LCFG_SETUP) &&
             (strncmp(lustre_cfg_string(lcfg, 0), "MDC_", 4) == 0)) {
                 char *ptr;
-                fsdb->fsdb_flags |= FSDB_OLDLOG14;
+                cfs_set_bit(FSDB_OLDLOG14, &fsdb->fsdb_flags);
                 ptr = strstr(lustre_cfg_string(lcfg, 1), "_UUID");
                 if (!ptr) {
                         CERROR("Can't parse MDT uuid %s\n",
@@ -238,13 +236,13 @@ static int mgs_fsdb_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
         /*
          * compat to 1.8, check osc name used by MDT0 to OSTs, bz18548.
          */
-        if (fsdb->fsdb_fl_oscname_18 == 0 &&
+        if (!cfs_test_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags) &&
             lcfg->lcfg_command == LCFG_ATTACH &&
             strcmp(lustre_cfg_string(lcfg, 1), LUSTRE_OSC_NAME) == 0) {
                 if (OBD_OCD_VERSION_MAJOR(d->ver) == 1 &&
                     OBD_OCD_VERSION_MINOR(d->ver) <= 8) {
                         CWARN("MDT using 1.8 OSC name scheme\n");
-                        fsdb->fsdb_fl_oscname_18 = 1;
+                        cfs_set_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags);
                 }
         }
 
@@ -261,7 +259,7 @@ static int mgs_fsdb_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
         RETURN(rc);
 }
 
-/* fsdb->fsdb_sem is already held  in mgs_find_or_make_fsdb*/
+/* fsdb->fsdb_mutex is already held  in mgs_find_or_make_fsdb*/
 static int mgs_get_fsdb_from_llog(struct obd_device *obd, struct fs_db *fsdb)
 {
         char *logname;
@@ -275,28 +273,29 @@ static int mgs_get_fsdb_from_llog(struct obd_device *obd, struct fs_db *fsdb)
         ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
         LASSERT(ctxt != NULL);
         name_create(&logname, fsdb->fsdb_name, "-client");
-        cfs_down(&fsdb->fsdb_sem);
+        cfs_mutex_lock(&fsdb->fsdb_mutex);
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-        rc = llog_create(ctxt, &loghandle, NULL, logname);
-        if (rc)
-                GOTO(out_pop, rc);
+       rc = llog_create(NULL, ctxt, &loghandle, NULL, logname);
+       if (rc)
+               GOTO(out_pop, rc);
 
-        rc = llog_init_handle(loghandle, LLOG_F_IS_PLAIN, NULL);
+       rc = llog_init_handle(NULL, loghandle, LLOG_F_IS_PLAIN, NULL);
         if (rc)
                 GOTO(out_close, rc);
 
         if (llog_get_size(loghandle) <= 1)
-                fsdb->fsdb_flags |= FSDB_LOG_EMPTY;
+                cfs_set_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags);
 
-        rc = llog_process(loghandle, mgs_fsdb_handler, (void *) &d, NULL);
-        CDEBUG(D_INFO, "get_db = %d\n", rc);
+       rc = llog_process(NULL, loghandle, mgs_fsdb_handler, (void *) &d,
+                         NULL);
+       CDEBUG(D_INFO, "get_db = %d\n", rc);
 out_close:
-        rc2 = llog_close(loghandle);
+       rc2 = llog_close(NULL, loghandle);
         if (!rc)
                 rc = rc2;
 out_pop:
         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-        cfs_up(&fsdb->fsdb_sem);
+        cfs_mutex_unlock(&fsdb->fsdb_mutex);
         name_destroy(&logname);
         llog_ctxt_put(ctxt);
 
@@ -323,7 +322,7 @@ static void mgs_free_fsdb_srpc(struct fs_db *fsdb)
         sptlrpc_rule_set_free(&fsdb->fsdb_srpc_gen);
 }
 
-static struct fs_db *mgs_find_fsdb(struct obd_device *obd, char *fsname)
+struct fs_db *mgs_find_fsdb(struct obd_device *obd, char *fsname)
 {
         struct mgs_obd *mgs = &obd->u.mgs;
         struct fs_db *fsdb;
@@ -355,11 +354,11 @@ static struct fs_db *mgs_new_fsdb(struct obd_device *obd, char *fsname)
                 RETURN(NULL);
 
         strcpy(fsdb->fsdb_name, fsname);
-        cfs_sema_init(&fsdb->fsdb_sem, 1);
-        fsdb->fsdb_fl_udesc = 1;
+        cfs_mutex_init(&fsdb->fsdb_mutex);
+        cfs_set_bit(FSDB_UDESC, &fsdb->fsdb_flags);
 
         if (strcmp(fsname, MGSSELF_NAME) == 0) {
-                fsdb->fsdb_fl_mgsself = 1;
+                cfs_set_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags);
         } else {
                 OBD_ALLOC(fsdb->fsdb_ost_index_map, INDEX_MAP_SIZE);
                 OBD_ALLOC(fsdb->fsdb_mdt_index_map, INDEX_MAP_SIZE);
@@ -381,6 +380,9 @@ static struct fs_db *mgs_new_fsdb(struct obd_device *obd, char *fsname)
                 if (rc)
                         GOTO(err, rc);
 
+                /* initialise data for NID table */
+                mgs_ir_init_fs(obd, fsdb);
+
                 lproc_mgs_add_live(obd, fsdb);
         }
 
@@ -403,9 +405,13 @@ err:
 static void mgs_free_fsdb(struct obd_device *obd, struct fs_db *fsdb)
 {
         /* wait for anyone with the sem */
-        cfs_down(&fsdb->fsdb_sem);
+        cfs_mutex_lock(&fsdb->fsdb_mutex);
         lproc_mgs_del_live(obd, fsdb);
         cfs_list_del(&fsdb->fsdb_list);
+
+        /* deinitialize fsr */
+        mgs_ir_fini_fs(obd, fsdb);
+
         if (fsdb->fsdb_ost_index_map)
                 OBD_FREE(fsdb->fsdb_ost_index_map, INDEX_MAP_SIZE);
         if (fsdb->fsdb_mdt_index_map)
@@ -416,6 +422,7 @@ static void mgs_free_fsdb(struct obd_device *obd, struct fs_db *fsdb)
         name_destroy(&fsdb->fsdb_mdtlmv);
         name_destroy(&fsdb->fsdb_mdc);
         mgs_free_fsdb_srpc(fsdb);
+        cfs_mutex_unlock(&fsdb->fsdb_mutex);
         OBD_FREE_PTR(fsdb);
 }
 
@@ -431,12 +438,12 @@ int mgs_cleanup_fsdb_list(struct obd_device *obd)
         struct mgs_obd *mgs = &obd->u.mgs;
         struct fs_db *fsdb;
         cfs_list_t *tmp, *tmp2;
-        cfs_down(&mgs->mgs_sem);
+        cfs_mutex_lock(&mgs->mgs_mutex);
         cfs_list_for_each_safe(tmp, tmp2, &mgs->mgs_fs_db_list) {
                 fsdb = cfs_list_entry(tmp, struct fs_db, fsdb_list);
                 mgs_free_fsdb(obd, fsdb);
         }
-        cfs_up(&mgs->mgs_sem);
+        cfs_mutex_unlock(&mgs->mgs_mutex);
         return 0;
 }
 
@@ -447,21 +454,21 @@ int mgs_find_or_make_fsdb(struct obd_device *obd, char *name,
         struct fs_db *fsdb;
         int rc = 0;
 
-        cfs_down(&mgs->mgs_sem);
+        cfs_mutex_lock(&mgs->mgs_mutex);
         fsdb = mgs_find_fsdb(obd, name);
         if (fsdb) {
-                cfs_up(&mgs->mgs_sem);
+                cfs_mutex_unlock(&mgs->mgs_mutex);
                 *dbh = fsdb;
                 return 0;
         }
 
         CDEBUG(D_MGS, "Creating new db\n");
         fsdb = mgs_new_fsdb(obd, name);
-        cfs_up(&mgs->mgs_sem);
+        cfs_mutex_unlock(&mgs->mgs_mutex);
         if (!fsdb)
                 return -ENOMEM;
 
-        if (!fsdb->fsdb_fl_mgsself) {
+        if (!cfs_test_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags)) {
                 /* populate the db from the client llog */
                 rc = mgs_get_fsdb_from_llog(obd, fsdb);
                 if (rc) {
@@ -502,7 +509,7 @@ int mgs_check_index(struct obd_device *obd, struct mgs_target_info *mti)
                 RETURN(rc);
         }
 
-        if (fsdb->fsdb_flags & FSDB_LOG_EMPTY)
+        if (cfs_test_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags))
                 RETURN(-1);
 
         if (mti->mti_flags & LDD_F_SV_TYPE_OST)
@@ -532,7 +539,7 @@ static __inline__ int next_index(void *index_map, int map_len)
         0  newly marked as in use
         <0 err
         +EALREADY for update of an old index */
-int mgs_set_index(struct obd_device *obd, struct mgs_target_info *mti)
+static int mgs_set_index(struct obd_device *obd, struct mgs_target_info *mti)
 {
         struct fs_db *fsdb;
         void *imap;
@@ -545,18 +552,26 @@ int mgs_set_index(struct obd_device *obd, struct mgs_target_info *mti)
                 RETURN(rc);
         }
 
-        if (mti->mti_flags & LDD_F_SV_TYPE_OST)
+        if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
                 imap = fsdb->fsdb_ost_index_map;
-        else if (mti->mti_flags & LDD_F_SV_TYPE_MDT)
+        } else if (mti->mti_flags & LDD_F_SV_TYPE_MDT) {
                 imap = fsdb->fsdb_mdt_index_map;
-        else
+                if (fsdb->fsdb_mdt_count >= MAX_MDT_COUNT) {
+                        LCONSOLE_ERROR_MSG(0x13f, "The max mdt count"
+                                           "is %d\n", (int)MAX_MDT_COUNT);
+                        RETURN(-ERANGE);
+                }
+        } else {
                 RETURN(-EINVAL);
+        }
 
         if (mti->mti_flags & LDD_F_NEED_INDEX) {
                 rc = next_index(imap, INDEX_MAP_SIZE);
                 if (rc == -1)
                         RETURN(-ERANGE);
                 mti->mti_stripe_index = rc;
+                if (mti->mti_flags & LDD_F_SV_TYPE_MDT)
+                        fsdb->fsdb_mdt_count ++;
         }
 
         if (mti->mti_stripe_index >= INDEX_MAP_SIZE * 8) {
@@ -584,8 +599,8 @@ int mgs_set_index(struct obd_device *obd, struct mgs_target_info *mti)
         }
 
         cfs_set_bit(mti->mti_stripe_index, imap);
-        fsdb->fsdb_flags &= ~FSDB_LOG_EMPTY;
-        server_make_name(mti->mti_flags, mti->mti_stripe_index,
+        cfs_clear_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags);
+       server_make_name(mti->mti_flags & ~LDD_F_VIRGIN, mti->mti_stripe_index,
                          mti->mti_fsname, mti->mti_svname);
 
         CDEBUG(D_MGS, "Set index for %s to %d\n", mti->mti_svname,
@@ -599,10 +614,11 @@ struct mgs_modify_lookup {
         int               mml_modified;
 };
 
-static int mgs_modify_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
-                              void *data)
+static int mgs_modify_handler(const struct lu_env *env,
+                             struct llog_handle *llh,
+                             struct llog_rec_hdr *rec, void *data)
 {
-        struct mgs_modify_lookup *mml = (struct mgs_modify_lookup *)data;
+       struct mgs_modify_lookup *mml = data;
         struct cfg_marker *marker;
         struct lustre_cfg *lcfg = (struct lustre_cfg *)(rec + 1);
         int cfg_len = rec->lrh_len - sizeof(struct llog_rec_hdr) -
@@ -641,8 +657,8 @@ static int mgs_modify_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
                 /* Header and tail are added back to lrh_len in
                    llog_lvfs_write_rec */
                 rec->lrh_len = cfg_len;
-                rc = llog_write_rec(llh, rec, NULL, 0, (void *)lcfg,
-                                    rec->lrh_index);
+               rc = llog_write_rec(NULL, llh, rec, NULL, 0, (void *)lcfg,
+                                   rec->lrh_index);
                 if (!rc)
                          mml->mml_modified++;
         }
@@ -669,11 +685,11 @@ static int mgs_modify(struct obd_device *obd, struct fs_db *fsdb,
 
         ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
         LASSERT(ctxt != NULL);
-        rc = llog_create(ctxt, &loghandle, NULL, logname);
+       rc = llog_create(NULL, ctxt, &loghandle, NULL, logname);
         if (rc)
                 GOTO(out_pop, rc);
 
-        rc = llog_init_handle(loghandle, LLOG_F_IS_PLAIN, NULL);
+       rc = llog_init_handle(NULL, loghandle, LLOG_F_IS_PLAIN, NULL);
         if (rc)
                 GOTO(out_close, rc);
 
@@ -689,13 +705,14 @@ static int mgs_modify(struct obd_device *obd, struct fs_db *fsdb,
         mml->mml_marker.cm_flags = flags;
         mml->mml_marker.cm_canceltime = flags ? cfs_time_current_sec() : 0;
         mml->mml_modified = 0;
-        rc = llog_process(loghandle, mgs_modify_handler, (void *)mml, NULL);
+       rc = llog_process(NULL, loghandle, mgs_modify_handler, (void *)mml,
+                         NULL);
         if (!rc && !mml->mml_modified)
                 rc = -ENODEV;
         OBD_FREE_PTR(mml);
 
 out_close:
-        rc2 = llog_close(loghandle);
+       rc2 = llog_close(NULL, loghandle);
         if (!rc)
                 rc = rc2;
 out_pop:
@@ -728,7 +745,7 @@ static int record_lcfg(struct obd_device *obd, struct llog_handle *llh,
 
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
         /* idx = -1 means append */
-        rc = llog_write_rec(llh, &rec, NULL, 0, (void *)lcfg, -1);
+       rc = llog_write_rec(NULL, llh, &rec, NULL, 0, (void *)lcfg, -1);
         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
         if (rc)
                 CERROR("failed %d\n", rc);
@@ -910,11 +927,11 @@ static int record_start_log(struct obd_device *obd,
                 GOTO(out, rc = -ENODEV);
 
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-        rc = llog_create(ctxt, llh, NULL, name);
-        if (rc == 0)
-                llog_init_handle(*llh, LLOG_F_IS_PLAIN, &cfg_uuid);
-        else
-                *llh = NULL;
+       rc = llog_create(NULL, ctxt, llh, NULL, name);
+       if (rc == 0)
+               llog_init_handle(NULL, *llh, LLOG_F_IS_PLAIN, &cfg_uuid);
+       else
+               *llh = NULL;
 
         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
         llog_ctxt_put(ctxt);
@@ -933,7 +950,7 @@ static int record_end_log(struct obd_device *obd, struct llog_handle **llh)
 
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 
-        rc = llog_close(*llh);
+       rc = llog_close(NULL, *llh);
         *llh = NULL;
 
         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
@@ -950,11 +967,11 @@ static int mgs_log_is_empty(struct obd_device *obd, char *name)
         ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
         LASSERT(ctxt != NULL);
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-        rc = llog_create(ctxt, &llh, NULL, name);
+        rc = llog_create(NULL, ctxt, &llh, NULL, name);
         if (rc == 0) {
-                llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
-                rc = llog_get_size(llh);
-                llog_close(llh);
+               llog_init_handle(NULL, llh, LLOG_F_IS_PLAIN, NULL);
+               rc = llog_get_size(llh);
+               llog_close(NULL, llh);
         }
         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
         llog_ctxt_put(ctxt);
@@ -1064,10 +1081,16 @@ struct temp_comp
 
 static int mgs_write_log_mdc_to_mdt(struct obd_device *, struct fs_db *,
                                     struct mgs_target_info *, char *);
+static int mgs_write_log_osc_to_lov(struct obd_device *obd, struct fs_db *fsdb,
+                                    struct mgs_target_info *mti,
+                                    char *logname, char *suffix, char *lovname,
+                                    enum lustre_sec_part sec_part, int flags);
+static void name_create_mdt_and_lov(char **logname, char **lovname,
+                                    struct fs_db *fsdb, int i);
 
-static int mgs_steal_llog_handler(struct llog_handle *llh,
-                                  struct llog_rec_hdr *rec,
-                                  void *data)
+static int mgs_steal_llog_handler(const struct lu_env *env,
+                                 struct llog_handle *llh,
+                                 struct llog_rec_hdr *rec, void *data)
 {
         struct obd_device * obd;
         struct mgs_target_info *mti, *tmti;
@@ -1110,6 +1133,8 @@ static int mgs_steal_llog_handler(struct llog_handle *llh,
                 if (!strncmp(marker->cm_comment,"add osc",7) &&
                     (marker->cm_flags & CM_START)){
                         got_an_osc_or_mdc = 1;
+                        strncpy(tmti->mti_svname, marker->cm_tgtname,
+                                sizeof(tmti->mti_svname));
                         rc = record_start_log(obd, &mdt_llh, mti->mti_svname);
                         rc = record_marker(obd, mdt_llh, fsdb, CM_START,
                                            mti->mti_svname,"add osc(copied)");
@@ -1185,10 +1210,34 @@ static int mgs_steal_llog_handler(struct llog_handle *llh,
                 memset(tmti, 0, sizeof(*tmti));
                 RETURN(rc);
         }
+
+        if (lcfg->lcfg_command == LCFG_LOV_ADD_OBD) {
+                int index;
+                char mdt_index[9];
+                char *logname, *lovname;
+
+                name_create_mdt_and_lov(&logname, &lovname, fsdb,
+                                        mti->mti_stripe_index);
+                sprintf(mdt_index, "-MDT%04x", mti->mti_stripe_index);
+
+                if (sscanf(lustre_cfg_buf(lcfg, 2), "%d", &index) != 1) {
+                        name_destroy(&logname);
+                        name_destroy(&lovname);
+                        RETURN(-EINVAL);
+                }
+
+                tmti->mti_stripe_index = index;
+                mgs_write_log_osc_to_lov(obd, fsdb, tmti, logname,
+                                         mdt_index, lovname,
+                                         LUSTRE_SP_MDT, 0);
+                name_destroy(&logname);
+                name_destroy(&lovname);
+                RETURN(rc);
+        }
         RETURN(rc);
 }
 
-/* fsdb->fsdb_sem is already held  in mgs_write_log_target*/
+/* fsdb->fsdb_mutex is already held  in mgs_write_log_target*/
 /* stealed from mgs_get_fsdb_from_llog*/
 static int mgs_steal_llog_for_mdt_from_client(struct obd_device *obd,
                                               char *client_name,
@@ -1213,18 +1262,19 @@ static int mgs_steal_llog_for_mdt_from_client(struct obd_device *obd,
 
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 
-        rc = llog_create(ctxt, &loghandle, NULL, client_name);
+       rc = llog_create(NULL, ctxt, &loghandle, NULL, client_name);
         if (rc)
                 GOTO(out_pop, rc);
 
-        rc = llog_init_handle(loghandle, LLOG_F_IS_PLAIN, NULL);
+       rc = llog_init_handle(NULL, loghandle, LLOG_F_IS_PLAIN, NULL);
         if (rc)
                 GOTO(out_close, rc);
 
-        rc = llog_process(loghandle, mgs_steal_llog_handler, (void *)comp, NULL);
+       rc = llog_process(NULL, loghandle, mgs_steal_llog_handler,
+                         (void *)comp, NULL);
         CDEBUG(D_MGS, "steal llog re = %d\n", rc);
 out_close:
-        rc2 = llog_close(loghandle);
+       rc2 = llog_close(NULL, loghandle);
         if (!rc)
                 rc = rc2;
 out_pop:
@@ -1296,7 +1346,7 @@ static int mgs_write_log_lov(struct obd_device *obd, struct fs_db *fsdb,
         lovdesc->ld_default_stripe_count = 1;
         lovdesc->ld_pattern = LOV_PATTERN_RAID0;
         lovdesc->ld_default_stripe_size = 1024 * 1024;
-        lovdesc->ld_default_stripe_offset = 0;
+        lovdesc->ld_default_stripe_offset = -1;
         lovdesc->ld_qos_maxage = QOS_DEFAULT_MAXAGE;
         sprintf((char*)lovdesc->ld_uuid.uuid, "%s_UUID", lovname);
         /* can these be the same? */
@@ -1372,7 +1422,7 @@ static int mgs_write_log_mdc_to_lmv(struct obd_device *obd, struct fs_db *fsdb,
 {
         struct llog_handle *llh = NULL;
         char *mdcname, *nodeuuid, *mdcuuid, *lmvuuid;
-        char index[5];
+        char index[6];
         int i, rc;
         ENTRY;
 
@@ -1428,7 +1478,7 @@ static int mgs_write_log_mdc_to_mdt(struct obd_device *obd, struct fs_db *fsdb,
         int i, rc;
 
         ENTRY;
-        if (mgs_log_is_empty(obd, mti->mti_svname)) {
+        if (mgs_log_is_empty(obd, logname)) {
                 CERROR("log is empty! Logical error\n");
                 RETURN (-EINVAL);
         }
@@ -1522,7 +1572,7 @@ static void name_create_mdt_and_lov(char **logname, char **lovname,
 {
         name_create_mdt(logname, fsdb->fsdb_name, i);
         /* COMPAT_180 */
-        if (i == 0 && fsdb->fsdb_fl_oscname_18)
+        if (i == 0 && cfs_test_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags))
                 name_create(lovname, fsdb->fsdb_name, "-mdtlov");
         else
                 name_create(lovname, *logname, "-mdtlov");
@@ -1533,7 +1583,7 @@ static inline void name_create_mdt_osc(char **oscname, char *ostname,
 {
         char suffix[16];
 
-        if (i == 0 && fsdb->fsdb_fl_oscname_18)
+        if (i == 0 && cfs_test_bit(FSDB_OSCNAME18, &fsdb->fsdb_flags))
                 sprintf(suffix, "-osc");
         else
                 sprintf(suffix, "-osc-MDT%04x", i);
@@ -1669,7 +1719,7 @@ static int mgs_write_log_osc_to_lov(struct obd_device *obd, struct fs_db *fsdb,
 {
         struct llog_handle *llh = NULL;
         char *nodeuuid, *oscname, *oscuuid, *lovuuid, *svname;
-        char index[5];
+        char index[6];
         int i, rc;
 
         ENTRY;
@@ -1677,9 +1727,8 @@ static int mgs_write_log_osc_to_lov(struct obd_device *obd, struct fs_db *fsdb,
                mti->mti_svname, logname);
 
         if (mgs_log_is_empty(obd, logname)) {
-                /* The first item in the log must be the lov, so we have
-                   somewhere to add our osc. */
-                rc = mgs_write_log_lov(obd, fsdb, mti, logname, lovname);
+                CERROR("log is empty! Logical error\n");
+                RETURN (-EINVAL);
         }
 
         name_create(&nodeuuid, libcfs_nid2str(mti->mti_nids[0]), "");
@@ -1776,7 +1825,7 @@ static int mgs_write_log_ost(struct obd_device *obd, struct fs_db *fsdb,
         /* We also have to update the other logs where this osc is part of
            the lov */
 
-        if (fsdb->fsdb_flags & FSDB_OLDLOG14) {
+        if (cfs_test_bit(FSDB_OLDLOG14, &fsdb->fsdb_flags)) {
                 /* If we're upgrading, the old mdt log already has our
                    entry. Let's do a fake one for fun. */
                 /* Note that we can't add any new failnids, since we don't
@@ -1809,8 +1858,15 @@ static int mgs_write_log_ost(struct obd_device *obd, struct fs_db *fsdb,
 
         /* Append ost info to the client log */
         name_create(&logname, mti->mti_fsname, "-client");
+        if (mgs_log_is_empty(obd, logname)) {
+                /* Start client log */
+                rc = mgs_write_log_lov(obd, fsdb, mti, logname,
+                                       fsdb->fsdb_clilov);
+                rc = mgs_write_log_lmv(obd, fsdb, mti, logname,
+                                       fsdb->fsdb_clilmv);
+        }
         mgs_write_log_osc_to_lov(obd, fsdb, mti, logname, "",
-                                 fsdb->fsdb_clilov, LUSTRE_SP_CLI, 0);
+                                 fsdb->fsdb_clilov, LUSTRE_SP_CLI, flags);
         name_destroy(&logname);
         RETURN(rc);
 }
@@ -1949,51 +2005,67 @@ static int mgs_wlp_lcfg(struct obd_device *obd, struct fs_db *fsdb,
 
 /* write global variable settings into log */
 static int mgs_write_log_sys(struct obd_device *obd, struct fs_db *fsdb,
-                             struct mgs_target_info *mti, char *sys, char *ptr)
-{
-        struct lustre_cfg_bufs bufs;
-        struct lustre_cfg *lcfg;
-        char *tmp;
-        char sep;
-        int cmd, val;
-        int rc;
-
-        if (class_match_param(ptr, PARAM_TIMEOUT, &tmp) == 0)
-                cmd = LCFG_SET_TIMEOUT;
-        else if (class_match_param(ptr, PARAM_LDLM_TIMEOUT, &tmp) == 0)
-                cmd = LCFG_SET_LDLM_TIMEOUT;
-        /* Check for known params here so we can return error to lctl */
-        else if ((class_match_param(ptr, PARAM_AT_MIN, &tmp) == 0)
-                 || (class_match_param(ptr, PARAM_AT_MAX, &tmp) == 0)
-                 || (class_match_param(ptr, PARAM_AT_EXTRA, &tmp) == 0)
-                 || (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, &tmp) == 0)
-                 || (class_match_param(ptr, PARAM_AT_HISTORY, &tmp) == 0))
-                cmd = LCFG_PARAM;
-        else
-                return -EINVAL;
-
-        /* separate the value */
-        val = simple_strtoul(tmp, NULL, 0);
-        if (*tmp == '\0')
-                CDEBUG(D_MGS, "global '%s' removed\n", sys);
-        else
-                CDEBUG(D_MGS, "global '%s' val=%d\n", sys, val);
-
-        lustre_cfg_bufs_reset(&bufs, NULL);
-        lustre_cfg_bufs_set_string(&bufs, 1, sys);
-        lcfg = lustre_cfg_new(cmd, &bufs);
-        lcfg->lcfg_num = val;
-        /* truncate the comment to the parameter name */
-        ptr = tmp - 1;
-        sep = *ptr;
-        *ptr = '\0';
-        /* modify all servers and clients */
-        rc = mgs_write_log_direct_all(obd, fsdb, mti,
-                                      *tmp == '\0' ? NULL : lcfg,
-                                      mti->mti_fsname, sys);
-        *ptr = sep;
-        lustre_cfg_free(lcfg);
-        return rc;
+                       struct mgs_target_info *mti, char *sys, char *ptr)
+{
+       struct lustre_cfg_bufs bufs;
+       struct lustre_cfg *lcfg;
+       char *tmp, sep;
+       int rc, cmd, convert = 1;
+
+       if (class_match_param(ptr, PARAM_TIMEOUT, &tmp) == 0) {
+               cmd = LCFG_SET_TIMEOUT;
+       } else if (class_match_param(ptr, PARAM_LDLM_TIMEOUT, &tmp) == 0) {
+               cmd = LCFG_SET_LDLM_TIMEOUT;
+       /* Check for known params here so we can return error to lctl */
+       } else if ((class_match_param(ptr, PARAM_AT_MIN, &tmp) == 0) ||
+               (class_match_param(ptr, PARAM_AT_MAX, &tmp) == 0) ||
+               (class_match_param(ptr, PARAM_AT_EXTRA, &tmp) == 0) ||
+               (class_match_param(ptr, PARAM_AT_EARLY_MARGIN, &tmp) == 0) ||
+               (class_match_param(ptr, PARAM_AT_HISTORY, &tmp) == 0)) {
+               cmd = LCFG_PARAM;
+       } else if (class_match_param(ptr, PARAM_JOBID_VAR, &tmp) == 0) {
+               convert = 0; /* Don't convert string value to integer */
+               cmd = LCFG_PARAM;
+       } else {
+               return -EINVAL;
+       }
+
+       if (mgs_param_empty(ptr))
+               CDEBUG(D_MGS, "global '%s' removed\n", sys);
+       else
+               CDEBUG(D_MGS, "global '%s' val=%s\n", sys, tmp);
+
+       lustre_cfg_bufs_reset(&bufs, NULL);
+       lustre_cfg_bufs_set_string(&bufs, 1, sys);
+       if (!convert && *tmp != '\0')
+               lustre_cfg_bufs_set_string(&bufs, 2, tmp);
+       lcfg = lustre_cfg_new(cmd, &bufs);
+       lcfg->lcfg_num = convert ? simple_strtoul(tmp, NULL, 0) : 0;
+       /* truncate the comment to the parameter name */
+       ptr = tmp - 1;
+       sep = *ptr;
+       *ptr = '\0';
+       /* modify all servers and clients */
+       rc = mgs_write_log_direct_all(obd, fsdb, mti,
+                               *tmp == '\0' ? NULL : lcfg,
+                               mti->mti_fsname, sys);
+       if (rc == 0 && *tmp != '\0') {
+               switch (cmd) {
+               case LCFG_SET_TIMEOUT:
+                       if (!obd_timeout_set || lcfg->lcfg_num > obd_timeout)
+                               class_process_config(lcfg);
+                       break;
+               case LCFG_SET_LDLM_TIMEOUT:
+                       if (!ldlm_timeout_set || lcfg->lcfg_num > ldlm_timeout)
+                               class_process_config(lcfg);
+                       break;
+               default:
+                       break;
+               }
+       }
+       *ptr = sep;
+       lustre_cfg_free(lcfg);
+       return rc;
 }
 
 static int mgs_srpc_set_param_disk(struct obd_device *obd,
@@ -2042,13 +2114,12 @@ static int mgs_srpc_set_param_disk(struct obd_device *obd,
         /* obsolete old one */
         mgs_modify(obd, fsdb, mti, logname, mti->mti_svname, comment, CM_SKIP);
 
-        if (!mgs_param_empty(param)) {
-                /* write the new one */
-                rc = mgs_write_log_direct(obd, fsdb, logname, lcfg,
-                                          mti->mti_svname, comment);
-                if (rc)
-                        CERROR("err %d writing log %s\n", rc, logname);
-        }
+        /* write the new one */
+        rc = mgs_write_log_direct(obd, fsdb, logname, lcfg,
+                                  mti->mti_svname, comment);
+        if (rc)
+                CERROR("err %d writing log %s\n", rc, logname);
+
 out:
         name_destroy(&logname);
 out_lcfg:
@@ -2077,10 +2148,10 @@ static int mgs_srpc_set_param_udesc_mem(struct fs_db *fsdb,
                 goto error_out;
 
         if (strcmp(ptr, "yes") == 0) {
-                fsdb->fsdb_fl_udesc = 1;
+                cfs_set_bit(FSDB_UDESC, &fsdb->fsdb_flags);
                 CWARN("Enable user descriptor shipping from client to MDT\n");
         } else if (strcmp(ptr, "no") == 0) {
-                fsdb->fsdb_fl_udesc = 0;
+                cfs_clear_bit(FSDB_UDESC, &fsdb->fsdb_flags);
                 CWARN("Disable user descriptor shipping from client to MDT\n");
         } else {
                 *(ptr - 1) = '=';
@@ -2124,7 +2195,7 @@ static int mgs_srpc_set_param_mem(struct fs_db *fsdb,
                 RETURN(rc);
 
         /* mgs rules implies must be mgc->mgs */
-        if (fsdb->fsdb_fl_mgsself) {
+        if (cfs_test_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags)) {
                 if ((rule.sr_from != LUSTRE_SP_MGC &&
                      rule.sr_from != LUSTRE_SP_ANY) ||
                     (rule.sr_to != LUSTRE_SP_MGS &&
@@ -2184,7 +2255,7 @@ static int mgs_srpc_set_param(struct obd_device *obd,
                               char *param)
 {
         char                   *copy;
-        int                     rc, copy_size, del;
+        int                     rc, copy_size;
         ENTRY;
 
 #ifndef HAVE_GSS
@@ -2198,19 +2269,16 @@ static int mgs_srpc_set_param(struct obd_device *obd,
                 return -ENOMEM;
         memcpy(copy, param, copy_size);
 
-        del = mgs_param_empty(param);
-        if (!del) {
-                rc = mgs_srpc_set_param_mem(fsdb, mti->mti_svname, param);
-                if (rc)
-                        goto out_free;
-        }
+        rc = mgs_srpc_set_param_mem(fsdb, mti->mti_svname, param);
+        if (rc)
+                goto out_free;
 
         /* previous steps guaranteed the syntax is correct */
         rc = mgs_srpc_set_param_disk(obd, fsdb, mti, copy);
         if (rc)
                 goto out_free;
 
-        if (fsdb->fsdb_fl_mgsself) {
+        if (cfs_test_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags)) {
                 /*
                  * for mgs rules, make them effective immediately.
                  */
@@ -2228,11 +2296,11 @@ struct mgs_srpc_read_data {
         int             msrd_skip;
 };
 
-static int mgs_srpc_read_handler(struct llog_handle *llh,
-                                 struct llog_rec_hdr *rec,
-                                 void *data)
+static int mgs_srpc_read_handler(const struct lu_env *env,
+                                struct llog_handle *llh,
+                                struct llog_rec_hdr *rec, void *data)
 {
-        struct mgs_srpc_read_data *msrd = (struct mgs_srpc_read_data *) data;
+       struct mgs_srpc_read_data *msrd = data;
         struct cfg_marker         *marker;
         struct lustre_cfg         *lcfg = (struct lustre_cfg *)(rec + 1);
         char                      *svname, *param;
@@ -2316,11 +2384,11 @@ int mgs_get_fsdb_srpc_from_llog(struct obd_device *obd,
 
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 
-        rc = llog_create(ctxt, &llh, NULL, logname);
+       rc = llog_create(NULL, ctxt, &llh, NULL, logname);
         if (rc)
                 GOTO(out_pop, rc);
 
-        rc = llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
+       rc = llog_init_handle(NULL, llh, LLOG_F_IS_PLAIN, NULL);
         if (rc)
                 GOTO(out_close, rc);
 
@@ -2330,10 +2398,11 @@ int mgs_get_fsdb_srpc_from_llog(struct obd_device *obd,
         msrd.msrd_fsdb = fsdb;
         msrd.msrd_skip = 0;
 
-        rc = llog_process(llh, mgs_srpc_read_handler, (void *) &msrd, NULL);
+       rc = llog_process(NULL, llh, mgs_srpc_read_handler, (void *) &msrd,
+                         NULL);
 
 out_close:
-        llog_close(llh);
+       llog_close(NULL, llh);
 out_pop:
         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
 out:
@@ -2356,7 +2425,7 @@ static int mgs_write_log_param(struct obd_device *obd, struct fs_db *fsdb,
         struct lustre_cfg_bufs bufs;
         char *logname;
         char *tmp;
-        int rc = 0;
+        int rc = 0, rc2 = 0;
         ENTRY;
 
         /* For various parameter settings, we have to figure out which logs
@@ -2370,6 +2439,10 @@ static int mgs_write_log_param(struct obd_device *obd, struct fs_db *fsdb,
         if (class_match_param(ptr, PARAM_MGSNODE, NULL) == 0)
                 GOTO(end, rc);
 
+       /* Processed in ost/mdt */
+       if (class_match_param(ptr, PARAM_NETWORK, NULL) == 0)
+               GOTO(end, rc);
+
         /* Processed in mgs_write_log_ost */
         if (class_match_param(ptr, PARAM_FAILMODE, NULL) == 0) {
                 if (mti->mti_flags & LDD_F_PARAM) {
@@ -2442,7 +2515,7 @@ static int mgs_write_log_param(struct obd_device *obd, struct fs_db *fsdb,
                                            "changes were made to the "
                                            "config log.\n",
                                            mti->mti_svname, rc);
-                        if (fsdb->fsdb_flags & FSDB_OLDLOG14)
+                        if (cfs_test_bit(FSDB_OLDLOG14, &fsdb->fsdb_flags))
                                 LCONSOLE_ERROR_MSG(0x146, "This may be"
                                                    " because the log"
                                                    "is in the old 1.4"
@@ -2508,7 +2581,7 @@ static int mgs_write_log_param(struct obd_device *obd, struct fs_db *fsdb,
                                             "-mdc");
                 } else if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
                         /* COMPAT_146 */
-                        if (fsdb->fsdb_flags & FSDB_OLDLOG14) {
+                        if (cfs_test_bit(FSDB_OLDLOG14, &fsdb->fsdb_flags)) {
                                 LCONSOLE_ERROR_MSG(0x148, "Upgraded "
                                                    "client logs for %s"
                                                    " cannot be "
@@ -2609,12 +2682,13 @@ static int mgs_write_log_param(struct obd_device *obd, struct fs_db *fsdb,
         }
 
         LCONSOLE_WARN("Ignoring unrecognized param '%s'\n", ptr);
+        rc2 = -ENOSYS;
 
 end:
         if (rc)
                 CERROR("err %d on param '%s'\n", rc, ptr);
 
-        RETURN(rc);
+        RETURN(rc ?: rc2);
 }
 
 /* Not implementing automatic failover nid addition at this time. */
@@ -2639,9 +2713,9 @@ int mgs_check_failnid(struct obd_device *obd, struct mgs_target_info *mti)
            the failover list.  Modify mti->params for rewriting back at
            server_register_target(). */
 
-        cfs_down(&fsdb->fsdb_sem);
+        cfs_mutex_lock(&fsdb->fsdb_mutex);
         rc = mgs_write_log_add_failnid(obd, fsdb, mti);
-        cfs_up(&fsdb->fsdb_sem);
+        cfs_mutex_unlock(&fsdb->fsdb_mutex);
 
         RETURN(rc);
 #endif
@@ -2649,9 +2723,9 @@ int mgs_check_failnid(struct obd_device *obd, struct mgs_target_info *mti)
 }
 
 int mgs_write_log_target(struct obd_device *obd,
-                         struct mgs_target_info *mti)
+                         struct mgs_target_info *mti,
+                         struct fs_db *fsdb)
 {
-        struct fs_db *fsdb;
         int rc = -EINVAL;
         char *buf, *params;
         ENTRY;
@@ -2696,13 +2770,7 @@ int mgs_write_log_target(struct obd_device *obd,
                 }
         }
 
-        rc = mgs_find_or_make_fsdb(obd, mti->mti_fsname, &fsdb);
-        if (rc) {
-                CERROR("Can't get db for %s\n", mti->mti_fsname);
-                RETURN(rc);
-        }
-
-        cfs_down(&fsdb->fsdb_sem);
+        cfs_mutex_lock(&fsdb->fsdb_mutex);
 
         if (mti->mti_flags &
             (LDD_F_VIRGIN | LDD_F_UPGRADE14 | LDD_F_WRITECONF)) {
@@ -2751,15 +2819,15 @@ int mgs_write_log_target(struct obd_device *obd,
         OBD_FREE(buf, strlen(mti->mti_params) + 1);
 
 out_up:
-        cfs_up(&fsdb->fsdb_sem);
+        cfs_mutex_unlock(&fsdb->fsdb_mutex);
         RETURN(rc);
 }
 
 /* COMPAT_146 */
 /* verify that we can handle the old config logs */
-int mgs_upgrade_sv_14(struct obd_device *obd, struct mgs_target_info *mti)
+int mgs_upgrade_sv_14(struct obd_device *obd, struct mgs_target_info *mti,
+                      struct fs_db *fsdb)
 {
-        struct fs_db *fsdb;
         int rc = 0;
         ENTRY;
 
@@ -2778,11 +2846,7 @@ int mgs_upgrade_sv_14(struct obd_device *obd, struct mgs_target_info *mti)
         LCONSOLE_INFO("upgrading server %s from pre-1.6\n", mti->mti_svname);
         server_mti_print("upgrade", mti);
 
-        rc = mgs_find_or_make_fsdb(obd, mti->mti_fsname, &fsdb);
-        if (rc)
-                RETURN(rc);
-
-        if (fsdb->fsdb_flags & FSDB_LOG_EMPTY) {
+        if (cfs_test_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags)) {
                 LCONSOLE_ERROR_MSG(0x14a, "The old client log %s-client is "
                                    "missing.  Was tunefs.lustre successful?\n",
                                    mti->mti_fsname);
@@ -2815,7 +2879,7 @@ int mgs_upgrade_sv_14(struct obd_device *obd, struct mgs_target_info *mti)
                 }
         }
 
-        if (!(fsdb->fsdb_flags & FSDB_OLDLOG14)) {
+        if (!cfs_test_bit(FSDB_OLDLOG14, &fsdb->fsdb_flags)) {
                 LCONSOLE_ERROR_MSG(0x14c, "%s-client is supposedly an old "
                                    "log, but no old LOV or MDT was found. "
                                    "Consider updating the configuration with"
@@ -2837,10 +2901,10 @@ int mgs_erase_log(struct obd_device *obd, char *name)
         LASSERT(ctxt != NULL);
 
         push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
-        rc = llog_create(ctxt, &llh, NULL, name);
-        if (rc == 0) {
-                llog_init_handle(llh, LLOG_F_IS_PLAIN, NULL);
-                rc = llog_destroy(llh);
+       rc = llog_create(NULL, ctxt, &llh, NULL, name);
+       if (rc == 0) {
+               llog_init_handle(NULL, llh, LLOG_F_IS_PLAIN, NULL);
+               rc = llog_destroy(NULL, llh);
                 llog_free_handle(llh);
         }
         pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
@@ -2856,7 +2920,7 @@ int mgs_erase_log(struct obd_device *obd, char *name)
 int mgs_erase_logs(struct obd_device *obd, char *fsname)
 {
         struct mgs_obd *mgs = &obd->u.mgs;
-        static struct fs_db *fsdb;
+        struct fs_db *fsdb;
         cfs_list_t dentry_list;
         struct l_linux_dirent *dirent, *n;
         int rc, len = strlen(fsname);
@@ -2871,7 +2935,7 @@ int mgs_erase_logs(struct obd_device *obd, char *fsname)
                 RETURN(rc);
         }
 
-        cfs_down(&mgs->mgs_sem);
+        cfs_mutex_lock(&mgs->mgs_mutex);
 
         /* Delete the fs db */
         fsdb = mgs_find_fsdb(obd, fsname);
@@ -2892,7 +2956,7 @@ int mgs_erase_logs(struct obd_device *obd, char *fsname)
                 OBD_FREE(dirent, sizeof(*dirent));
         }
 
-        cfs_up(&mgs->mgs_sem);
+        cfs_mutex_unlock(&mgs->mgs_mutex);
 
         RETURN(rc);
 }
@@ -2974,7 +3038,8 @@ int mgs_setparam(struct obd_device *obd, struct lustre_cfg *lcfg, char *fsname)
         rc = mgs_find_or_make_fsdb(obd, fsname, &fsdb);
         if (rc)
                 RETURN(rc);
-        if (!fsdb->fsdb_fl_mgsself && fsdb->fsdb_flags & FSDB_LOG_EMPTY) {
+        if (!cfs_test_bit(FSDB_MGS_SELF, &fsdb->fsdb_flags) &&
+            cfs_test_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags)) {
                 CERROR("No filesystem targets for %s.  cfg_device from lctl "
                        "is '%s'\n", fsname, devname);
                 mgs_free_fsdb(obd, fsdb);
@@ -3000,10 +3065,17 @@ int mgs_setparam(struct obd_device *obd, struct lustre_cfg *lcfg, char *fsname)
 
         mti->mti_flags = rc | LDD_F_PARAM;
 
-        cfs_down(&fsdb->fsdb_sem);
+        cfs_mutex_lock(&fsdb->fsdb_mutex);
         rc = mgs_write_log_param(obd, fsdb, mti, mti->mti_params);
-        cfs_up(&fsdb->fsdb_sem);
+        cfs_mutex_unlock(&fsdb->fsdb_mutex);
 
+        /*
+         * Revoke lock so everyone updates.  Should be alright if
+         * someone was already reading while we were updating the logs,
+         * so we don't really need to hold the lock while we're
+         * writing (above).
+         */
+        mgs_revoke_lock(obd, fsdb, CONFIG_T_CONFIG);
 out:
         OBD_FREE_PTR(mti);
         RETURN(rc);
@@ -3046,7 +3118,7 @@ int mgs_pool_cmd(struct obd_device *obd, enum lcfg_command_type cmd,
                 CERROR("Can't get db for %s\n", fsname);
                 RETURN(rc);
         }
-        if (fsdb->fsdb_flags & FSDB_LOG_EMPTY) {
+        if (cfs_test_bit(FSDB_LOG_EMPTY, &fsdb->fsdb_flags)) {
                 CERROR("%s is not defined\n", fsname);
                 mgs_free_fsdb(obd, fsdb);
                 RETURN(-EINVAL);
@@ -3105,7 +3177,7 @@ int mgs_pool_cmd(struct obd_device *obd, enum lcfg_command_type cmd,
         }
         }
 
-        cfs_down(&fsdb->fsdb_sem);
+        cfs_mutex_lock(&fsdb->fsdb_mutex);
 
         if (canceled_label != NULL) {
                 OBD_ALLOC_PTR(mti);
@@ -3141,7 +3213,9 @@ int mgs_pool_cmd(struct obd_device *obd, enum lcfg_command_type cmd,
                            cmd, fsname, poolname, ostname, label);
         name_destroy(&logname);
 
-        cfs_up(&fsdb->fsdb_sem);
+        cfs_mutex_unlock(&fsdb->fsdb_mutex);
+        /* request for update */
+        mgs_revoke_lock(obd, fsdb, CONFIG_T_CONFIG);
 
         EXIT;
 out: