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b=21586 further build message cleanups
[fs/lustre-release.git] / lustre / mgs / mgs_llog.c
index 6440f2f..8d6c90c 100644 (file)
@@ -123,19 +123,27 @@ static inline void name_destroy(char **name)
         *name = NULL;
 }
 
+struct mgs_fsdb_handler_data
+{
+        struct fs_db   *fsdb;
+        __u32           ver;
+};
+
 /* from the (client) config log, figure out:
         1. which ost's/mdt's are configured (by index)
         2. what the last config step is
         3. COMPAT_146 lov name
         4. COMPAT_146 mdt lov name
         5. COMPAT_146 mdc name
+        6. COMPAT_18 osc name
 */
 /* 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)
 {
-        struct fs_db *fsdb = (struct fs_db *)data;
+        struct mgs_fsdb_handler_data *d = (struct mgs_fsdb_handler_data *) data;
+        struct fs_db *fsdb = d->fsdb;
         int cfg_len = rec->lrh_len;
         char *cfg_buf = (char*) (rec + 1);
         struct lustre_cfg *lcfg;
@@ -227,10 +235,26 @@ static int mgs_fsdb_handler(struct llog_handle *llh, struct llog_rec_hdr *rec,
         }
         /* end COMPAT_146 */
 
-        /* Keep track of the latest marker step */
+        /*
+         * compat to 1.8, check osc name used by MDT0 to OSTs, bz18548.
+         */
+        if (fsdb->fsdb_fl_oscname_18 == 0 &&
+            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;
+                }
+        }
+
         if (lcfg->lcfg_command == LCFG_MARKER) {
                 struct cfg_marker *marker;
                 marker = lustre_cfg_buf(lcfg, 1);
+
+                d->ver = marker->cm_vers;
+
+                /* Keep track of the latest marker step */
                 fsdb->fsdb_gen = max(fsdb->fsdb_gen, marker->cm_step);
         }
 
@@ -244,6 +268,7 @@ static int mgs_get_fsdb_from_llog(struct obd_device *obd, struct fs_db *fsdb)
         struct llog_handle *loghandle;
         struct lvfs_run_ctxt saved;
         struct llog_ctxt *ctxt;
+        struct mgs_fsdb_handler_data d = { fsdb, 0 };
         int rc, rc2;
         ENTRY;
 
@@ -263,7 +288,7 @@ static int mgs_get_fsdb_from_llog(struct obd_device *obd, struct fs_db *fsdb)
         if (llog_get_size(loghandle) <= 1)
                 fsdb->fsdb_flags |= FSDB_LOG_EMPTY;
 
-        rc = llog_process(loghandle, mgs_fsdb_handler, (void *)fsdb, NULL);
+        rc = llog_process(loghandle, mgs_fsdb_handler, (void *) &d, NULL);
         CDEBUG(D_INFO, "get_db = %d\n", rc);
 out_close:
         rc2 = llog_close(loghandle);
@@ -320,37 +345,46 @@ static struct fs_db *mgs_new_fsdb(struct obd_device *obd, char *fsname)
         int rc;
         ENTRY;
 
+        if (strlen(fsname) >= sizeof(fsdb->fsdb_name)) {
+                CERROR("fsname %s is too long\n", fsname);
+                RETURN(NULL);
+        }
+
         OBD_ALLOC_PTR(fsdb);
         if (!fsdb)
                 RETURN(NULL);
 
-        OBD_ALLOC(fsdb->fsdb_ost_index_map, INDEX_MAP_SIZE);
-        OBD_ALLOC(fsdb->fsdb_mdt_index_map, INDEX_MAP_SIZE);
-        if (!fsdb->fsdb_ost_index_map || !fsdb->fsdb_mdt_index_map) {
-                CERROR("No memory for index maps\n");
-                GOTO(err, 0);
-        }
+        strcpy(fsdb->fsdb_name, fsname);
+        sema_init(&fsdb->fsdb_sem, 1);
+        fsdb->fsdb_fl_udesc = 1;
 
-        strncpy(fsdb->fsdb_name, fsname, sizeof(fsdb->fsdb_name));
-        fsdb->fsdb_name[sizeof(fsdb->fsdb_name) - 1] = 0;
-        rc = name_create(&fsdb->fsdb_mdtlov, fsname, "-mdtlov");
-        if (rc)
-                GOTO(err, rc);
-        rc = name_create(&fsdb->fsdb_mdtlmv, fsname, "-mdtlmv");
-        if (rc)
-                GOTO(err, rc);
-        rc = name_create(&fsdb->fsdb_clilov, fsname, "-clilov");
-        if (rc)
-                GOTO(err, rc);
+        if (strcmp(fsname, MGSSELF_NAME) == 0) {
+                fsdb->fsdb_fl_mgsself = 1;
+        } else {
+                OBD_ALLOC(fsdb->fsdb_ost_index_map, INDEX_MAP_SIZE);
+                OBD_ALLOC(fsdb->fsdb_mdt_index_map, INDEX_MAP_SIZE);
+                if (!fsdb->fsdb_ost_index_map || !fsdb->fsdb_mdt_index_map) {
+                        CERROR("No memory for index maps\n");
+                        GOTO(err, 0);
+                }
 
-        rc = name_create(&fsdb->fsdb_clilmv, fsname, "-clilmv");
-        if (rc)
-                GOTO(err, rc);
+                rc = name_create(&fsdb->fsdb_mdtlov, fsname, "-mdtlov");
+                if (rc)
+                        GOTO(err, rc);
+                rc = name_create(&fsdb->fsdb_mdtlmv, fsname, "-mdtlmv");
+                if (rc)
+                        GOTO(err, rc);
+                rc = name_create(&fsdb->fsdb_clilov, fsname, "-clilov");
+                if (rc)
+                        GOTO(err, rc);
+                rc = name_create(&fsdb->fsdb_clilmv, fsname, "-clilmv");
+                if (rc)
+                        GOTO(err, rc);
+
+                lproc_mgs_add_live(obd, fsdb);
+        }
 
-        fsdb->fsdb_srpc_fl_udesc = 1;
-        sema_init(&fsdb->fsdb_sem, 1);
         list_add(&fsdb->fsdb_list, &mgs->mgs_fs_db_list);
-        lproc_mgs_add_live(obd, fsdb);
 
         RETURN(fsdb);
 err:
@@ -372,8 +406,10 @@ static void mgs_free_fsdb(struct obd_device *obd, struct fs_db *fsdb)
         down(&fsdb->fsdb_sem);
         lproc_mgs_del_live(obd, fsdb);
         list_del(&fsdb->fsdb_list);
-        OBD_FREE(fsdb->fsdb_ost_index_map, INDEX_MAP_SIZE);
-        OBD_FREE(fsdb->fsdb_mdt_index_map, INDEX_MAP_SIZE);
+        if (fsdb->fsdb_ost_index_map)
+                OBD_FREE(fsdb->fsdb_ost_index_map, INDEX_MAP_SIZE);
+        if (fsdb->fsdb_mdt_index_map)
+                OBD_FREE(fsdb->fsdb_mdt_index_map, INDEX_MAP_SIZE);
         name_destroy(&fsdb->fsdb_clilov);
         name_destroy(&fsdb->fsdb_clilmv);
         name_destroy(&fsdb->fsdb_mdtlov);
@@ -404,8 +440,8 @@ int mgs_cleanup_fsdb_list(struct obd_device *obd)
         return 0;
 }
 
-static int mgs_find_or_make_fsdb(struct obd_device *obd, char *name,
-                               struct fs_db **dbh)
+int mgs_find_or_make_fsdb(struct obd_device *obd, char *name,
+                          struct fs_db **dbh)
 {
         struct mgs_obd *mgs = &obd->u.mgs;
         struct fs_db *fsdb;
@@ -425,12 +461,14 @@ static int mgs_find_or_make_fsdb(struct obd_device *obd, char *name,
         if (!fsdb)
                 return -ENOMEM;
 
-        /* populate the db from the client llog */
-        rc = mgs_get_fsdb_from_llog(obd, fsdb);
-        if (rc) {
-                CERROR("Can't get db from client log %d\n", rc);
-                mgs_free_fsdb(obd, fsdb);
-                return rc;
+        if (!fsdb->fsdb_fl_mgsself) {
+                /* populate the db from the client llog */
+                rc = mgs_get_fsdb_from_llog(obd, fsdb);
+                if (rc) {
+                        CERROR("Can't get db from client log %d\n", rc);
+                        mgs_free_fsdb(obd, fsdb);
+                        return rc;
+                }
         }
 
         /* populate srpc rules from params llog */
@@ -1428,7 +1466,7 @@ static int mgs_write_log_mdt0(struct obd_device *obd, struct fs_db *fsdb,
         char *log = mti->mti_svname;
         struct llog_handle *llh = NULL;
         char *uuid, *lovname;
-        char mdt_index[5];
+        char mdt_index[6];
         char *ptr = mti->mti_params;
         int rc = 0, failout = 0;
         ENTRY;
@@ -1445,7 +1483,7 @@ static int mgs_write_log_mdt0(struct obd_device *obd, struct fs_db *fsdb,
                 rc = mgs_write_log_lov(obd, fsdb, mti, log, lovname);
 
         sprintf(uuid, "%s_UUID", log);
-        sprintf(mdt_index,"%d",mti->mti_stripe_index);
+        sprintf(mdt_index, "%d", mti->mti_stripe_index);
 
         /* add MDT itself */
         rc = record_start_log(obd, &llh, log);
@@ -1466,6 +1504,37 @@ out:
         RETURN(rc);
 }
 
+static inline void name_create_mdt(char **logname, char *fsname, int i)
+{
+        char mdt_index[9];
+
+        sprintf(mdt_index, "-MDT%04x", i);
+        name_create(logname, fsname, mdt_index);
+}
+
+static void name_create_mdt_and_lov(char **logname, char **lovname,
+                                    struct fs_db *fsdb, int i)
+{
+        name_create_mdt(logname, fsdb->fsdb_name, i);
+        /* COMPAT_180 */
+        if (i == 0 && fsdb->fsdb_fl_oscname_18)
+                name_create(lovname, fsdb->fsdb_name, "-mdtlov");
+        else
+                name_create(lovname, *logname, "-mdtlov");
+}
+
+static inline void name_create_mdt_osc(char **oscname, char *ostname,
+                                       struct fs_db *fsdb, int i)
+{
+        char suffix[16];
+
+        if (i == 0 && fsdb->fsdb_fl_oscname_18)
+                sprintf(suffix, "-osc");
+        else
+                sprintf(suffix, "-osc-MDT%04x", i);
+        name_create(oscname, ostname, suffix);
+}
+
 /* envelope method for all layers log */
 static int mgs_write_log_mdt(struct obd_device *obd, struct fs_db *fsdb,
                               struct mgs_target_info *mti)
@@ -1473,7 +1542,6 @@ static int mgs_write_log_mdt(struct obd_device *obd, struct fs_db *fsdb,
         struct llog_handle *llh = NULL;
         char *cliname;
         struct temp_comp comp = { 0 };
-        char mdt_index[9];
         int rc, i = 0;
         ENTRY;
 
@@ -1579,9 +1647,7 @@ out:
                 char *mdtname;
                 if (i !=  mti->mti_stripe_index &&
                     test_bit(i,  fsdb->fsdb_mdt_index_map)) {
-                        sprintf(mdt_index,"-MDT%04x",i);
-
-                        name_create(&mdtname, mti->mti_fsname, mdt_index);
+                        name_create_mdt(&mdtname, mti->mti_fsname, i);
                         rc = mgs_write_log_mdc_to_mdt(obd, fsdb, mti, mdtname);
                         name_destroy(&mdtname);
                 }
@@ -1661,7 +1727,6 @@ static int mgs_write_log_ost(struct obd_device *obd, struct fs_db *fsdb,
 {
         struct llog_handle *llh = NULL;
         char *logname, *lovname;
-        char mdt_index[9];
         char *ptr = mti->mti_params;
         int rc, flags = 0, failout = 0, i;
         ENTRY;
@@ -1722,12 +1787,13 @@ static int mgs_write_log_ost(struct obd_device *obd, struct fs_db *fsdb,
                               mti->mti_svname);
         }
 
-        // for_all_existing_mdt
+        /* Add ost to all MDT lov defs */
         for (i = 0; i < INDEX_MAP_SIZE * 8; i++){
-                 if (test_bit(i,  fsdb->fsdb_mdt_index_map)) {
-                        sprintf(mdt_index,"-MDT%04x",i);
-                        name_create(&logname, mti->mti_fsname, mdt_index);
-                        name_create(&lovname, logname, "-mdtlov");
+                if (test_bit(i, fsdb->fsdb_mdt_index_map)) {
+                        char mdt_index[9];
+
+                        name_create_mdt_and_lov(&logname, &lovname, fsdb, i);
+                        sprintf(mdt_index, "-MDT%04x", i);
                         mgs_write_log_osc_to_lov(obd, fsdb, mti, logname,
                                                  mdt_index, lovname,
                                                  LUSTRE_SP_MDT, flags);
@@ -1792,23 +1858,35 @@ static int mgs_write_log_add_failnid(struct obd_device *obd, struct fs_db *fsdb,
                 rc = record_end_log(obd, &llh);
         }
         name_destroy(&logname);
+        name_destroy(&cliname);
 
         if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
-                /* Add OST failover nids to the MDT log as well */
-                name_create(&logname, mti->mti_fsname, "-MDT0000");
-                rc = record_start_log(obd, &llh, logname);
-                if (!rc) {
-                        rc = record_marker(obd, llh, fsdb, CM_START,
-                                           mti->mti_svname, "add failnid");
-                        rc = mgs_write_log_failnids(obd, mti, llh, cliname);
-                        rc = record_marker(obd, llh, fsdb, CM_END,
-                                           mti->mti_svname, "add failnid");
-                        rc = record_end_log(obd, &llh);
+                /* Add OST failover nids to the MDT logs as well */
+                int i;
+
+                for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
+                        if (!test_bit(i, fsdb->fsdb_mdt_index_map))
+                                continue;
+                        name_create_mdt(&logname, mti->mti_fsname, i);
+                        name_create_mdt_osc(&cliname, mti->mti_svname, fsdb, i);
+
+                        rc = record_start_log(obd, &llh, logname);
+                        if (!rc) {
+                                rc = record_marker(obd, llh, fsdb, CM_START,
+                                                   mti->mti_svname,
+                                                   "add failnid");
+                                rc = mgs_write_log_failnids(obd, mti, llh,
+                                                            cliname);
+                                rc = record_marker(obd, llh, fsdb, CM_END,
+                                                   mti->mti_svname,
+                                                   "add failnid");
+                                rc = record_end_log(obd, &llh);
+                        }
+                        name_destroy(&cliname);
+                        name_destroy(&logname);
                 }
-                name_destroy(&logname);
         }
 
-        name_destroy(&cliname);
         RETURN(rc);
 }
 
@@ -1843,6 +1921,44 @@ static int mgs_wlp_lcfg(struct obd_device *obd, struct fs_db *fsdb,
         return rc;
 }
 
+/* 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;
+        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;
+
+        val = simple_strtoul(tmp, NULL, 0);
+        CDEBUG(D_MGS, "global %s = %d\n", ptr, 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;
+        /* modify all servers and clients */
+        rc = mgs_write_log_direct_all(obd, fsdb, mti, lcfg, mti->mti_fsname,
+                                      ptr);
+        lustre_cfg_free(lcfg);
+        return rc;
+}
+
 static int mgs_srpc_set_param_disk(struct obd_device *obd,
                                    struct fs_db *fsdb,
                                    struct mgs_target_info *mti,
@@ -1923,10 +2039,10 @@ static int mgs_srpc_set_param_udesc_mem(struct fs_db *fsdb,
                 goto error_out;
 
         if (strcmp(ptr, "yes") == 0) {
-                fsdb->fsdb_srpc_fl_udesc = 1;
+                fsdb->fsdb_fl_udesc = 1;
                 CWARN("Enable user descriptor shipping from client to MDT\n");
         } else if (strcmp(ptr, "no") == 0) {
-                fsdb->fsdb_srpc_fl_udesc = 0;
+                fsdb->fsdb_fl_udesc = 0;
                 CWARN("Disable user descriptor shipping from client to MDT\n");
         } else {
                 *(ptr - 1) = '=';
@@ -1969,6 +2085,15 @@ static int mgs_srpc_set_param_mem(struct fs_db *fsdb,
         if (rc)
                 RETURN(rc);
 
+        /* mgs rules implies must be mgc->mgs */
+        if (fsdb->fsdb_fl_mgsself) {
+                if ((rule.sr_from != LUSTRE_SP_MGC &&
+                     rule.sr_from != LUSTRE_SP_ANY) ||
+                    (rule.sr_to != LUSTRE_SP_MGS &&
+                     rule.sr_to != LUSTRE_SP_ANY))
+                        RETURN(-EINVAL);
+        }
+
         /* preapre room for this coming rule. svcname format should be:
          * - fsname: general rule
          * - fsname-tgtname: target-specific rule
@@ -2010,7 +2135,7 @@ static int mgs_srpc_set_param_mem(struct fs_db *fsdb,
                 rset = &fsdb->fsdb_srpc_gen;
         }
 
-        rc = sptlrpc_rule_set_merge(rset, &rule, 1);
+        rc = sptlrpc_rule_set_merge(rset, &rule);
 
         RETURN(rc);
 }
@@ -2024,6 +2149,9 @@ static int mgs_srpc_set_param(struct obd_device *obd,
         int                     rc, copy_size;
         ENTRY;
 
+#ifndef HAVE_GSS
+        RETURN(-EINVAL);
+#endif
         /* keep a copy of original param, which could be destroied
          * during parsing */
         copy_size = strlen(param) + 1;
@@ -2038,6 +2166,17 @@ static int mgs_srpc_set_param(struct obd_device *obd,
 
         /* 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) {
+                /*
+                 * for mgs rules, make them effective immediately.
+                 */
+                LASSERT(fsdb->fsdb_srpc_tgt == NULL);
+                sptlrpc_target_update_exp_flavor(obd, &fsdb->fsdb_srpc_gen);
+        }
+
 out_free:
         OBD_FREE(copy, copy_size);
         RETURN(rc);
@@ -2165,282 +2304,270 @@ out:
         RETURN(rc);
 }
 
-static int mgs_write_log_params(struct obd_device *obd, struct fs_db *fsdb,
-                                struct mgs_target_info *mti)
+static int mgs_write_log_param(struct obd_device *obd, struct fs_db *fsdb,
+                               struct mgs_target_info *mti, char *ptr)
 {
         struct lustre_cfg_bufs bufs;
-        struct lustre_cfg *lcfg;
         char *logname;
-        char *ptr = mti->mti_params;
-        char *endptr, *tmp;
+        char *tmp;
         int rc = 0;
         ENTRY;
 
-        if (!mti->mti_params)
-                RETURN(0);
-
         /* For various parameter settings, we have to figure out which logs
            care about them (e.g. both mdt and client for lov settings) */
-        while (ptr) {
-                while (*ptr == ' ')
-                        ptr++;
-                if (*ptr == '\0')
-                        break;
-                endptr = strchr(ptr, ' ');
-                if (endptr)
-                        *endptr = '\0';
-                CDEBUG(D_MGS, "next param '%s'\n", ptr);
-
-                /* The params are stored in MOUNT_DATA_FILE and modified
-                   via tunefs.lustre, or set using lctl conf_param */
-
-                /* Processed in lustre_start_mgc */
-                if (class_match_param(ptr, PARAM_MGSNODE, NULL) == 0)
-                        GOTO(end_while, rc);
-
-                /* Processed in mgs_write_log_ost */
-                if (class_match_param(ptr, PARAM_FAILMODE, NULL) == 0) {
-                        if (mti->mti_flags & LDD_F_PARAM) {
-                                LCONSOLE_ERROR_MSG(0x169, "%s can only be "
-                                                   "changed with tunefs.lustre"
-                                                   "and --writeconf\n", ptr);
-                                rc = -EPERM;
-                        }
-                        GOTO(end_while, rc);
+        CDEBUG(D_MGS, "next param '%s'\n", ptr);
+
+        /* The params are stored in MOUNT_DATA_FILE and modified via
+           tunefs.lustre, or set using lctl conf_param */
+
+        /* Processed in lustre_start_mgc */
+        if (class_match_param(ptr, PARAM_MGSNODE, 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) {
+                        LCONSOLE_ERROR_MSG(0x169, "%s can only be "
+                                           "changed with tunefs.lustre"
+                                           "and --writeconf\n", ptr);
+                        rc = -EPERM;
                 }
+                GOTO(end, rc);
+        }
 
-                if (class_match_param(ptr, PARAM_SRPC, NULL) == 0) {
-                        rc = mgs_srpc_set_param(obd, fsdb, mti, ptr);
-                        GOTO(end_while, rc);
-                }
+        if (class_match_param(ptr, PARAM_SRPC, NULL) == 0) {
+                rc = mgs_srpc_set_param(obd, fsdb, mti, ptr);
+                GOTO(end, rc);
+        }
 
-                if (class_match_param(ptr, PARAM_FAILNODE, NULL) == 0) {
-                        /* Add a failover nidlist */
-                        rc = 0;
-                        /* We already processed failovers params for new
-                           targets in mgs_write_log_target */
-                        if (mti->mti_flags & LDD_F_PARAM) {
-                                CDEBUG(D_MGS, "Adding failnode\n");
-                                rc = mgs_write_log_add_failnid(obd, fsdb, mti);
-                        }
-                        GOTO(end_while, rc);
+        if (class_match_param(ptr, PARAM_FAILNODE, NULL) == 0) {
+                /* Add a failover nidlist */
+                rc = 0;
+                /* We already processed failovers params for new
+                   targets in mgs_write_log_target */
+                if (mti->mti_flags & LDD_F_PARAM) {
+                        CDEBUG(D_MGS, "Adding failnode\n");
+                        rc = mgs_write_log_add_failnid(obd, fsdb, mti);
                 }
+                GOTO(end, rc);
+        }
 
-                if (class_match_param(ptr, PARAM_SYS_TIMEOUT, &tmp) == 0) {
-                        /* Change obd timeout */
-                        int timeout;
-                        timeout = simple_strtoul(tmp, NULL, 0);
-
-                        CDEBUG(D_MGS, "obd timeout %d\n", timeout);
-                        lustre_cfg_bufs_reset(&bufs, NULL);
-                        lcfg = lustre_cfg_new(LCFG_SET_TIMEOUT, &bufs);
-                        lcfg->lcfg_num = timeout;
-                        /* modify all servers and clients */
-                        rc = mgs_write_log_direct_all(obd, fsdb, mti, lcfg,
-                                                      mti->mti_fsname,
-                                                      "timeout");
-                        lustre_cfg_free(lcfg);
-                        GOTO(end_while, rc);
-                }
+        if (class_match_param(ptr, PARAM_SYS, &tmp) == 0) {
+                rc = mgs_write_log_sys(obd, fsdb, mti, ptr, tmp);
+                GOTO(end, rc);
+        }
 
-                if (class_match_param(ptr, PARAM_OSC""PARAM_ACTIVE, &tmp) == 0) {
-                        /* active=0 means off, anything else means on */
-                        char mdt_index[16];
-                        int flag = (*tmp == '0') ? CM_EXCLUDE : 0;
-                        int i;
+        if (class_match_param(ptr, PARAM_OSC""PARAM_ACTIVE, &tmp) == 0) {
+                /* active=0 means off, anything else means on */
+                int flag = (*tmp == '0') ? CM_EXCLUDE : 0;
+                int i;
 
-                        if (!(mti->mti_flags & LDD_F_SV_TYPE_OST)) {
-                                LCONSOLE_ERROR_MSG(0x144, "%s: Only OSCs can "
-                                                   "be (de)activated.\n",
-                                                   mti->mti_svname);
-                                rc = -EINVAL;
-                                goto end_while;
-                        }
-                        LCONSOLE_WARN("Permanently %sactivating %s\n",
-                                      flag ? "de": "re", mti->mti_svname);
-                        /* Modify clilov */
-                        name_create(&logname, mti->mti_fsname, "-client");
+                if (!(mti->mti_flags & LDD_F_SV_TYPE_OST)) {
+                        LCONSOLE_ERROR_MSG(0x144, "%s: Only OSCs can "
+                                           "be (de)activated.\n",
+                                           mti->mti_svname);
+                        GOTO(end, rc = -EINVAL);
+                }
+                LCONSOLE_WARN("Permanently %sactivating %s\n",
+                              flag ? "de": "re", mti->mti_svname);
+                /* Modify clilov */
+                name_create(&logname, mti->mti_fsname, "-client");
+                rc = mgs_modify(obd, fsdb, mti, logname,
+                                mti->mti_svname, "add osc", flag);
+                name_destroy(&logname);
+                if (rc)
+                        goto active_err;
+                /* Modify mdtlov */
+                /* Add to all MDT logs for CMD */
+                for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
+                        if (!test_bit(i, fsdb->fsdb_mdt_index_map))
+                                continue;
+                        name_create_mdt(&logname, mti->mti_fsname, i);
                         rc = mgs_modify(obd, fsdb, mti, logname,
                                         mti->mti_svname, "add osc", flag);
                         name_destroy(&logname);
                         if (rc)
                                 goto active_err;
-                        /* Modify mdtlov */
-                        /* FIXME add to all MDT logs for CMD */
-                        for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
-                                if (!test_bit(i, fsdb->fsdb_mdt_index_map))
-                                        continue;
-                                sprintf(mdt_index,"-MDT%04x", i);
-                                name_create(&logname, mti->mti_fsname, mdt_index);
-                                rc = mgs_modify(obd, fsdb, mti, logname,
-                                                mti->mti_svname, "add osc", flag);
-                                name_destroy(&logname);
-                                if (rc)
-                                        goto active_err;
-                        }
-active_err:
-                        if (rc) {
-                                LCONSOLE_ERROR_MSG(0x145, "Couldn't find %s in"
-                                                   "log (%d). No permanent "
-                                                   "changes were made to the "
-                                                   "config log.\n",
-                                                   mti->mti_svname, rc);
-                                if (fsdb->fsdb_flags & FSDB_OLDLOG14)
-                                        LCONSOLE_ERROR_MSG(0x146, "This may be"
-                                                           " because the log "
-                                                           "is in the old 1.4"
-                                                           "style. Consider "
-                                                           " --writeconf to "
-                                                           "update the logs.\n");
-                                goto end_while;
-                        }
-                        /* Fall through to osc proc for deactivating
-                           live OSC on running MDT / clients. */
                 }
-                /* Below here, let obd's XXX_process_config methods handle it */
-
-                /* All lov. in proc */
-                if (class_match_param(ptr, PARAM_LOV, NULL) == 0) {
-                        char mdt_index[16];
-                        char *mdtlovname;
-
-                        CDEBUG(D_MGS, "lov param %s\n", ptr);
-                        if (!(mti->mti_flags & LDD_F_SV_TYPE_MDT)) {
-                                LCONSOLE_ERROR_MSG(0x147, "LOV params must be "
-                                                   "set on the MDT, not %s. "
-                                                   "Ignoring.\n",
-                                                   mti->mti_svname);
-                                rc = 0;
-                                goto end_while;
-                        }
-
-                        /* Modify mdtlov */
-                        if (mgs_log_is_empty(obd, mti->mti_svname))
-                                GOTO(end_while, rc = -ENODEV);
+        active_err:
+                if (rc) {
+                        LCONSOLE_ERROR_MSG(0x145, "Couldn't find %s in"
+                                           "log (%d). No permanent "
+                                           "changes were made to the "
+                                           "config log.\n",
+                                           mti->mti_svname, rc);
+                        if (fsdb->fsdb_flags & FSDB_OLDLOG14)
+                                LCONSOLE_ERROR_MSG(0x146, "This may be"
+                                                   " because the log"
+                                                   "is in the old 1.4"
+                                                   "style. Consider "
+                                                   " --writeconf to "
+                                                   "update the logs.\n");
+                        GOTO(end, rc);
+                }
+                /* Fall through to osc proc for deactivating live OSC
+                   on running MDT / clients. */
+        }
+        /* Below here, let obd's XXX_process_config methods handle it */
 
-                        sprintf(mdt_index,"-MDT%04x", mti->mti_stripe_index);
-                        name_create(&logname, mti->mti_fsname, mdt_index);
-                        name_create(&mdtlovname, logname, "-mdtlov");
-                        rc = mgs_wlp_lcfg(obd, fsdb, mti, mti->mti_svname,
-                                          &bufs, mdtlovname, ptr);
-                        name_destroy(&logname);
-                        name_destroy(&mdtlovname);
-                        if (rc)
-                                GOTO(end_while, rc);
+        /* All lov. in proc */
+        if (class_match_param(ptr, PARAM_LOV, NULL) == 0) {
+                char *mdtlovname;
 
-                        /* Modify clilov */
-                        name_create(&logname, mti->mti_fsname, "-client");
-                        rc = mgs_wlp_lcfg(obd, fsdb, mti, logname, &bufs,
-                                          fsdb->fsdb_clilov, ptr);
-                        name_destroy(&logname);
-                        GOTO(end_while, rc);
+                CDEBUG(D_MGS, "lov param %s\n", ptr);
+                if (!(mti->mti_flags & LDD_F_SV_TYPE_MDT)) {
+                        LCONSOLE_ERROR_MSG(0x147, "LOV params must be "
+                                           "set on the MDT, not %s. "
+                                           "Ignoring.\n",
+                                           mti->mti_svname);
+                        GOTO(end, rc = 0);
                 }
 
-                /* All osc., mdc., llite. params in proc */
-                if ((class_match_param(ptr, PARAM_OSC, NULL) == 0) ||
-                    (class_match_param(ptr, PARAM_MDC, NULL) == 0) ||
-                    (class_match_param(ptr, PARAM_LLITE, NULL) == 0)) {
-                        char *cname;
-                        if (memcmp(ptr, PARAM_LLITE, strlen(PARAM_LLITE)) == 0) {
-                                name_create(&cname, mti->mti_fsname, "-client");
-                        /* Add the client type to match the obdname
-                           in class_config_llog_handler */
-                        } else if (mti->mti_flags & LDD_F_SV_TYPE_MDT) {
-                                /* COMPAT_146 */
-                                if (fsdb->fsdb_mdc)
-                                        name_create(&cname, fsdb->fsdb_mdc, "");
-                                else
-                                        name_create(&cname, mti->mti_svname,
-                                                    "-mdc");
-                        } else if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
-                                /* COMPAT_146 */
-                                if (fsdb->fsdb_flags & FSDB_OLDLOG14) {
-                                        LCONSOLE_ERROR_MSG(0x148, "Upgraded "
-                                                           "client logs for %s"
-                                                           " cannot be "
-                                                           "modified. Consider"
-                                                           " updating the "
-                                                           "configuration with"
-                                                           " --writeconf\n",
-                                                           mti->mti_svname);
-                                        /* We don't know the names of all the
-                                           old oscs*/
-                                        rc = -EINVAL;
-                                        goto end_while;
-                                }
-                                name_create(&cname, mti->mti_svname, "-osc");
-                        } else {
-                                rc = -EINVAL;
-                                goto end_while;
-                        }
+                /* Modify mdtlov */
+                if (mgs_log_is_empty(obd, mti->mti_svname))
+                        GOTO(end, rc = -ENODEV);
 
-                        CDEBUG(D_MGS, "%.3s param %s\n", ptr, ptr + 4);
-
-                        /* Modify client */
-                        name_create(&logname, mti->mti_fsname, "-client");
-                        rc = mgs_wlp_lcfg(obd, fsdb, mti, logname, &bufs,
-                                          cname, ptr);
-
-                        /* osc params affect the MDT as well */
-                        if (!rc && (mti->mti_flags & LDD_F_SV_TYPE_OST)) {
-                                char mdt_index[16];
-                                int i;
-
-                                for (i = 0; i < INDEX_MAP_SIZE * 8; i++){
-                                        if (!test_bit(i, fsdb->fsdb_mdt_index_map))
-                                                continue;
-                                        name_destroy(&cname);
-                                        sprintf(mdt_index, "-osc-MDT%04x", i);
-                                        name_create(&cname, mti->mti_svname,
-                                                    mdt_index);
-                                        name_destroy(&logname);
-                                        sprintf(mdt_index, "-MDT%04x", i);
-                                        name_create(&logname, mti->mti_fsname,
-                                                    mdt_index);
-                                        if (!mgs_log_is_empty(obd, logname))
-                                                rc = mgs_wlp_lcfg(obd, fsdb,
-                                                                  mti, logname,
-                                                                  &bufs, cname,
-                                                                  ptr);
-                                        if (rc)
-                                                break;
-                                }
-                        }
-                        name_destroy(&logname);
-                        name_destroy(&cname);
-                        GOTO(end_while, rc);
-                }
+                name_create_mdt_and_lov(&logname, &mdtlovname, fsdb,
+                                        mti->mti_stripe_index);
+                rc = mgs_wlp_lcfg(obd, fsdb, mti, mti->mti_svname,
+                                  &bufs, mdtlovname, ptr);
+                name_destroy(&logname);
+                name_destroy(&mdtlovname);
+                if (rc)
+                        GOTO(end, rc);
 
-                /* All mdt., ost. params in proc */
-                if ((class_match_param(ptr, PARAM_MDT, NULL) == 0) ||
-                    (class_match_param(ptr, PARAM_MDD, NULL) == 0) ||
-                    (class_match_param(ptr, PARAM_OST, NULL) == 0)) {
-                        CDEBUG(D_MGS, "%.3s param %s\n", ptr, ptr + 4);
-                        if (mgs_log_is_empty(obd, mti->mti_svname)) {
-                                rc = -ENODEV;
-                                goto end_while;
+                /* Modify clilov */
+                name_create(&logname, mti->mti_fsname, "-client");
+                rc = mgs_wlp_lcfg(obd, fsdb, mti, logname, &bufs,
+                                  fsdb->fsdb_clilov, ptr);
+                name_destroy(&logname);
+                GOTO(end, rc);
+        }
+
+        /* All osc., mdc., llite. params in proc */
+        if ((class_match_param(ptr, PARAM_OSC, NULL) == 0) ||
+            (class_match_param(ptr, PARAM_MDC, NULL) == 0) ||
+            (class_match_param(ptr, PARAM_LLITE, NULL) == 0)) {
+                char *cname;
+                if (memcmp(ptr, PARAM_LLITE, strlen(PARAM_LLITE)) == 0) {
+                        name_create(&cname, mti->mti_fsname, "-client");
+                        /* Add the client type to match the obdname in
+                           class_config_llog_handler */
+                } else if (mti->mti_flags & LDD_F_SV_TYPE_MDT) {
+                        /* COMPAT_146 */
+                        if (fsdb->fsdb_mdc)
+                                name_create(&cname, fsdb->fsdb_mdc, "");
+                        else
+                                name_create(&cname, mti->mti_svname,
+                                            "-mdc");
+                } else if (mti->mti_flags & LDD_F_SV_TYPE_OST) {
+                        /* COMPAT_146 */
+                        if (fsdb->fsdb_flags & FSDB_OLDLOG14) {
+                                LCONSOLE_ERROR_MSG(0x148, "Upgraded "
+                                                   "client logs for %s"
+                                                   " cannot be "
+                                                   "modified. Consider"
+                                                   " updating the "
+                                                   "configuration with"
+                                                   " --writeconf\n",
+                                                   mti->mti_svname);
+                                /* We don't know the names of all the
+                                   old oscs*/
+                                GOTO(end, rc = -EINVAL);
                         }
-                        rc = mgs_wlp_lcfg(obd, fsdb, mti, mti->mti_svname,
-                                          &bufs, mti->mti_svname, ptr);
-                        GOTO(end_while, rc);
+                        name_create(&cname, mti->mti_svname, "-osc");
+                } else {
+                        GOTO(end, rc = -EINVAL);
                 }
 
-                LCONSOLE_WARN("Ignoring unrecognized param '%s'\n", ptr);
+                CDEBUG(D_MGS, "%.3s param %s\n", ptr, ptr + 4);
 
-end_while:
-                if (rc) {
-                        CERROR("err %d on param '%s\n", rc, ptr);
-                        break;
+                /* Modify client */
+                name_create(&logname, mti->mti_fsname, "-client");
+                rc = mgs_wlp_lcfg(obd, fsdb, mti, logname, &bufs,
+                                  cname, ptr);
+
+                /* osc params affect the MDT as well */
+                if (!rc && (mti->mti_flags & LDD_F_SV_TYPE_OST)) {
+                        int i;
+
+                        for (i = 0; i < INDEX_MAP_SIZE * 8; i++){
+                                if (!test_bit(i, fsdb->fsdb_mdt_index_map))
+                                        continue;
+                                name_destroy(&cname);
+                                name_create_mdt_osc(&cname, mti->mti_svname,
+                                                    fsdb, i);
+                                name_destroy(&logname);
+                                name_create_mdt(&logname, mti->mti_fsname, i);
+                                if (!mgs_log_is_empty(obd, logname))
+                                        rc = mgs_wlp_lcfg(obd, fsdb,mti,logname,
+                                                          &bufs, cname, ptr);
+                                if (rc)
+                                        break;
+                        }
+                }
+                name_destroy(&logname);
+                name_destroy(&cname);
+                GOTO(end, rc);
+        }
+
+        /* All mdt. params in proc */
+        if (class_match_param(ptr, PARAM_MDT, NULL) == 0) {
+                int i;
+                __u32 idx;
+
+                CDEBUG(D_MGS, "%.3s param %s\n", ptr, ptr + 4);
+                if (strncmp(mti->mti_svname, mti->mti_fsname,
+                            MTI_NAME_MAXLEN) == 0)
+                        /* device is unspecified completely? */
+                        rc = LDD_F_SV_TYPE_MDT | LDD_F_SV_ALL;
+                else
+                        rc = server_name2index(mti->mti_svname, &idx, NULL);
+                if (rc < 0)
+                        goto active_err;
+                if ((rc & LDD_F_SV_TYPE_MDT) == 0)
+                        goto active_err;
+                if (rc & LDD_F_SV_ALL) {
+                        for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
+                                if (!test_bit(i,
+                                              fsdb->fsdb_mdt_index_map))
+                                        continue;
+                                name_create_mdt(&logname, mti->mti_fsname, i);
+                                rc = mgs_wlp_lcfg(obd, fsdb, mti,
+                                                  logname, &bufs,
+                                                  logname, ptr);
+                                name_destroy(&logname);
+                                if (rc)
+                                        goto active_err;
+                        }
+                } else {
+                        rc = mgs_wlp_lcfg(obd, fsdb, mti,
+                                          mti->mti_svname, &bufs,
+                                          mti->mti_svname, ptr);
+                        if (rc)
+                                goto active_err;
                 }
+                GOTO(end, rc);
+        }
 
-                if (!endptr)
-                        /* last param */
-                        break;
+        /* All mdd., ost. params in proc */
+        if ((class_match_param(ptr, PARAM_MDD, NULL) == 0) ||
+            (class_match_param(ptr, PARAM_OST, NULL) == 0)) {
+                CDEBUG(D_MGS, "%.3s param %s\n", ptr, ptr + 4);
+                if (mgs_log_is_empty(obd, mti->mti_svname))
+                        GOTO(end, rc = -ENODEV);
 
-                *endptr = ' ';
-                ptr = endptr + 1;
+                rc = mgs_wlp_lcfg(obd, fsdb, mti, mti->mti_svname,
+                                  &bufs, mti->mti_svname, ptr);
+                GOTO(end, rc);
         }
 
+        LCONSOLE_WARN("Ignoring unrecognized param '%s'\n", ptr);
+
+end:
+        if (rc)
+                CERROR("err %d on param '%s'\n", rc, ptr);
+
         RETURN(rc);
 }
 
@@ -2480,6 +2607,7 @@ int mgs_write_log_target(struct obd_device *obd,
 {
         struct fs_db *fsdb;
         int rc = -EINVAL;
+        char *buf, *params;
         ENTRY;
 
         /* set/check the new target index */
@@ -2552,7 +2680,29 @@ int mgs_write_log_target(struct obd_device *obd,
                 mti->mti_flags |= LDD_F_PARAM;
         }
 
-        rc = mgs_write_log_params(obd, fsdb, mti);
+        /* allocate temporary buffer, where class_get_next_param will
+           make copy of a current  parameter */
+        OBD_ALLOC(buf, strlen(mti->mti_params) + 1);
+        if (buf == NULL)
+                GOTO(out_up, rc = -ENOMEM);
+        params = mti->mti_params;
+        while (params != NULL) {
+                rc = class_get_next_param(&params, buf);
+                if (rc) {
+                        if (rc == 1)
+                                /* there is no next parameter, that is
+                                   not an error */
+                                rc = 0;
+                        break;
+                }
+                CDEBUG(D_MGS, "remaining string: '%s', param: '%s'\n",
+                       params, buf);
+                rc = mgs_write_log_param(obd, fsdb, mti, buf);
+                if (rc)
+                        break;
+        }
+
+        OBD_FREE(buf, strlen(mti->mti_params) + 1);
 
 out_up:
         up(&fsdb->fsdb_sem);
@@ -2754,6 +2904,10 @@ int mgs_setparam(struct obd_device *obd, struct lustre_cfg *lcfg, char *fsname)
         ptr = strrchr(devname, '-');
         memset(fsname, 0, MTI_NAME_MAXLEN);
         if (ptr && (server_name2index(ptr, &index, NULL) >= 0)) {
+                /* param related to llite isn't allowed to set by OST or MDT */
+                if (strncmp(param, PARAM_LLITE, sizeof(PARAM_LLITE)) == 0)
+                        RETURN(-EINVAL);
+
                 strncpy(fsname, devname, ptr - devname);
         } else {
                 /* assume devname is the fsname */
@@ -2765,7 +2919,7 @@ 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_flags & FSDB_LOG_EMPTY) {
+        if (!fsdb->fsdb_fl_mgsself && fsdb->fsdb_flags & FSDB_LOG_EMPTY) {
                 CERROR("No filesystem targets for %s.  cfg_device from lctl "
                        "is '%s'\n", fsname, devname);
                 mgs_free_fsdb(obd, fsdb);
@@ -2792,7 +2946,9 @@ int mgs_setparam(struct obd_device *obd, struct lustre_cfg *lcfg, char *fsname)
         mti->mti_flags = rc | LDD_F_PARAM;
 
         down(&fsdb->fsdb_sem);
-        rc = mgs_write_log_params(obd, fsdb, mti);
+        /* this is lctl conf_param's single param path, there is not
+           need to loop through parameters */
+        rc = mgs_write_log_param(obd, fsdb, mti, mti->mti_params);
         up(&fsdb->fsdb_sem);
 
 out:
@@ -2824,7 +2980,6 @@ int mgs_pool_cmd(struct obd_device *obd, enum lcfg_command_type cmd,
                  char *fsname, char *poolname, char *ostname)
 {
         struct fs_db *fsdb;
-        char mdt_index[16];
         char *lovname;
         char *logname;
         char *label = NULL, *canceled_label = NULL;
@@ -2905,12 +3060,10 @@ int mgs_pool_cmd(struct obd_device *obd, enum lcfg_command_type cmd,
                         GOTO(out, rc = -ENOMEM);
         }
 
-        /* loop on all potential MDT */
+        /* write pool def to all MDT logs */
         for (i = 0; i < INDEX_MAP_SIZE * 8; i++) {
                  if (test_bit(i,  fsdb->fsdb_mdt_index_map)) {
-                        sprintf(mdt_index, "-MDT%04x", i);
-                        name_create(&logname, fsname, mdt_index);
-                        name_create(&lovname, logname, "-mdtlov");
+                        name_create_mdt_and_lov(&logname, &lovname, fsdb, i);
 
                         if (canceled_label != NULL) {
                                 strcpy(mti->mti_svname, "lov pool");