/* Copyright (c) 2008-2012 Red Hat, Inc. This file is part of GlusterFS. This file is licensed to you under your choice of the GNU Lesser General Public License, version 3 or any later version (LGPLv3 or later), or the GNU General Public License, version 2 (GPLv2), in all cases as published by the Free Software Foundation. */ /* TODO: add NS locking */ #include "statedump.h" #include "dht-common.h" #include "dht-messages.h" #ifndef MAX #define MAX(a, b) (((a) > (b))?(a):(b)) #endif #define GF_DECIDE_DEFRAG_THROTTLE_COUNT(throttle_count, conf) { \ \ pthread_mutex_lock (&conf->defrag->dfq_mutex); \ \ if (!strcasecmp (conf->dthrottle, "lazy")) \ conf->defrag->recon_thread_count = 1; \ \ throttle_count = \ MAX ((sysconf(_SC_NPROCESSORS_ONLN) - 4), 4); \ \ if (!strcasecmp (conf->dthrottle, "normal")) \ conf->defrag->recon_thread_count = \ (throttle_count / 2); \ \ if (!strcasecmp (conf->dthrottle, "aggressive")) \ conf->defrag->recon_thread_count = \ throttle_count; \ \ pthread_mutex_unlock (&conf->defrag->dfq_mutex); \ } \ /* TODO: - use volumename in xattr instead of "dht" - use NS locks - handle all cases in self heal layout reconstruction - complete linkfile selfheal */ struct volume_options options[]; extern dht_methods_t dht_methods; void dht_layout_dump (dht_layout_t *layout, const char *prefix) { char key[GF_DUMP_MAX_BUF_LEN]; int i = 0; if (!layout) goto out; if (!prefix) goto out; gf_proc_dump_build_key(key, prefix, "cnt"); gf_proc_dump_write(key, "%d", layout->cnt); gf_proc_dump_build_key(key, prefix, "preset"); gf_proc_dump_write(key, "%d", layout->preset); gf_proc_dump_build_key(key, prefix, "gen"); gf_proc_dump_write(key, "%d", layout->gen); if (layout->type != IA_INVAL) { gf_proc_dump_build_key(key, prefix, "inode type"); gf_proc_dump_write(key, "%d", layout->type); } if (!IA_ISDIR (layout->type)) goto out; for (i = 0; i < layout->cnt; i++) { gf_proc_dump_build_key(key, prefix,"list[%d].err", i); gf_proc_dump_write(key, "%d", layout->list[i].err); gf_proc_dump_build_key(key, prefix,"list[%d].start", i); gf_proc_dump_write(key, "%u", layout->list[i].start); gf_proc_dump_build_key(key, prefix,"list[%d].stop", i); gf_proc_dump_write(key, "%u", layout->list[i].stop); if (layout->list[i].xlator) { gf_proc_dump_build_key(key, prefix, "list[%d].xlator.type", i); gf_proc_dump_write(key, "%s", layout->list[i].xlator->type); gf_proc_dump_build_key(key, prefix, "list[%d].xlator.name", i); gf_proc_dump_write(key, "%s", layout->list[i].xlator->name); } } out: return; } int32_t dht_priv_dump (xlator_t *this) { char key_prefix[GF_DUMP_MAX_BUF_LEN]; char key[GF_DUMP_MAX_BUF_LEN]; int i = 0; dht_conf_t *conf = NULL; int ret = -1; if (!this) goto out; conf = this->private; if (!conf) goto out; ret = TRY_LOCK(&conf->subvolume_lock); if (ret != 0) { return ret; } gf_proc_dump_add_section("xlator.cluster.dht.%s.priv", this->name); gf_proc_dump_build_key(key_prefix,"xlator.cluster.dht","%s.priv", this->name); gf_proc_dump_write("subvol_cnt","%d", conf->subvolume_cnt); for (i = 0; i < conf->subvolume_cnt; i++) { snprintf (key, sizeof (key), "subvolumes[%d]", i); gf_proc_dump_write(key, "%s.%s", conf->subvolumes[i]->type, conf->subvolumes[i]->name); if (conf->file_layouts && conf->file_layouts[i]){ snprintf (key, sizeof (key), "file_layouts[%d]", i); dht_layout_dump(conf->file_layouts[i], key); } if (conf->dir_layouts && conf->dir_layouts[i]) { snprintf (key, sizeof (key), "dir_layouts[%d]", i); dht_layout_dump(conf->dir_layouts[i], key); } if (conf->subvolume_status) { snprintf (key, sizeof (key), "subvolume_status[%d]", i); gf_proc_dump_write(key, "%d", (int)conf->subvolume_status[i]); } } gf_proc_dump_write("search_unhashed", "%d", conf->search_unhashed); gf_proc_dump_write("gen", "%d", conf->gen); gf_proc_dump_write("min_free_disk", "%lf", conf->min_free_disk); gf_proc_dump_write("min_free_inodes", "%lf", conf->min_free_inodes); gf_proc_dump_write("disk_unit", "%c", conf->disk_unit); gf_proc_dump_write("refresh_interval", "%d", conf->refresh_interval); gf_proc_dump_write("unhashed_sticky_bit", "%d", conf->unhashed_sticky_bit); gf_proc_dump_write("use-readdirp", "%d", conf->use_readdirp); if (conf->du_stats && conf->subvolume_status) { for (i = 0; i < conf->subvolume_cnt; i++) { if (!conf->subvolume_status[i]) continue; snprintf (key, sizeof (key), "subvolumes[%d]", i); gf_proc_dump_write (key, "%s", conf->subvolumes[i]->name); snprintf (key, sizeof (key), "du_stats[%d].avail_percent", i); gf_proc_dump_write (key, "%lf", conf->du_stats[i].avail_percent); snprintf (key, sizeof (key), "du_stats[%d].avail_space", i); gf_proc_dump_write (key, "%lu", conf->du_stats[i].avail_space); snprintf (key, sizeof (key), "du_stats[%d].avail_inodes", i); gf_proc_dump_write (key, "%lf", conf->du_stats[i].avail_inodes); snprintf (key, sizeof (key), "du_stats[%d].log", i); gf_proc_dump_write (key, "%lu", conf->du_stats[i].log); } } if (conf->last_stat_fetch.tv_sec) gf_proc_dump_write("last_stat_fetch", "%s", ctime(&conf->last_stat_fetch.tv_sec)); UNLOCK(&conf->subvolume_lock); out: return ret; } int32_t dht_inodectx_dump (xlator_t *this, inode_t *inode) { int ret = -1; dht_layout_t *layout = NULL; if (!this) goto out; if (!inode) goto out; ret = dht_inode_ctx_layout_get (inode, this, &layout); if ((ret != 0) || !layout) return ret; gf_proc_dump_add_section("xlator.cluster.dht.%s.inode", this->name); dht_layout_dump(layout, "layout"); out: return ret; } void dht_fini (xlator_t *this) { int i = 0; dht_conf_t *conf = NULL; GF_VALIDATE_OR_GOTO ("dht", this, out); conf = this->private; this->private = NULL; if (conf) { if (conf->file_layouts) { for (i = 0; i < conf->subvolume_cnt; i++) { GF_FREE (conf->file_layouts[i]); } GF_FREE (conf->file_layouts); } dict_destroy(conf->leaf_to_subvol); GF_FREE (conf->subvolumes); GF_FREE (conf->subvolume_status); if (conf->lock_pool) mem_pool_destroy (conf->lock_pool); GF_FREE (conf); } out: return; } int32_t mem_acct_init (xlator_t *this) { int ret = -1; GF_VALIDATE_OR_GOTO ("dht", this, out); ret = xlator_mem_acct_init (this, gf_dht_mt_end + 1); if (ret != 0) { gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_NO_MEMORY, "Memory accounting init failed"); return ret; } out: return ret; } int dht_parse_decommissioned_bricks (xlator_t *this, dht_conf_t *conf, const char *bricks) { int i = 0; int ret = -1; char *tmpstr = NULL; char *dup_brick = NULL; char *node = NULL; if (!conf || !bricks) goto out; dup_brick = gf_strdup (bricks); node = strtok_r (dup_brick, ",", &tmpstr); while (node) { for (i = 0; i < conf->subvolume_cnt; i++) { if (!strcmp (conf->subvolumes[i]->name, node)) { conf->decommissioned_bricks[i] = conf->subvolumes[i]; conf->decommission_subvols_cnt++; gf_msg (this->name, GF_LOG_INFO, 0, DHT_MSG_SUBVOL_DECOMMISSION_INFO, "decommissioning subvolume %s", conf->subvolumes[i]->name); break; } } if (i == conf->subvolume_cnt) { /* Wrong node given. */ goto out; } node = strtok_r (NULL, ",", &tmpstr); } ret = 0; conf->decommission_in_progress = 1; out: GF_FREE (dup_brick); return ret; } int dht_decommissioned_remove (xlator_t *this, dht_conf_t *conf) { int i = 0; int ret = -1; if (!conf) goto out; for (i = 0; i < conf->subvolume_cnt; i++) { if (conf->decommissioned_bricks[i]) { conf->decommissioned_bricks[i] = NULL; conf->decommission_subvols_cnt--; } } ret = 0; out: return ret; } void dht_init_regex (xlator_t *this, dict_t *odict, char *name, regex_t *re, gf_boolean_t *re_valid) { char *temp_str; if (dict_get_str (odict, name, &temp_str) != 0) { if (strcmp(name,"rsync-hash-regex")) { return; } temp_str = "^\\.(.+)\\.[^.]+$"; } if (*re_valid) { regfree(re); *re_valid = _gf_false; } if (!strcmp(temp_str,"none")) { return; } if (regcomp(re,temp_str,REG_EXTENDED) == 0) { gf_msg_debug (this->name, 0, "using regex %s = %s", name, temp_str); *re_valid = _gf_true; } else { gf_msg (this->name, GF_LOG_WARNING, 0, DHT_MSG_REGEX_INFO, "compiling regex %s failed", temp_str); } } int dht_set_subvol_range(xlator_t *this) { int ret = -1; dht_conf_t *conf = NULL; conf = this->private; if (!conf) goto out; conf->leaf_to_subvol = dict_new(); if (!conf->leaf_to_subvol) goto out; ret = glusterfs_reachable_leaves(this, conf->leaf_to_subvol); out: return ret; } int dht_reconfigure (xlator_t *this, dict_t *options) { dht_conf_t *conf = NULL; char *temp_str = NULL; gf_boolean_t search_unhashed; int ret = -1; int throttle_count = 0; GF_VALIDATE_OR_GOTO ("dht", this, out); GF_VALIDATE_OR_GOTO ("dht", options, out); conf = this->private; if (!conf) return 0; if (dict_get_str (options, "lookup-unhashed", &temp_str) == 0) { /* If option is not "auto", other options _should_ be boolean*/ if (strcasecmp (temp_str, "auto")) { if (!gf_string2boolean (temp_str, &search_unhashed)) { gf_msg_debug(this->name, 0, "Reconfigure: " "lookup-unhashed reconfigured(%s)", temp_str); conf->search_unhashed = search_unhashed; } else { gf_msg(this->name, GF_LOG_ERROR, 0, DHT_MSG_INVALID_OPTION, "Invalid option: Reconfigure: " "lookup-unhashed should be boolean," " not (%s), defaulting to (%d)", temp_str, conf->search_unhashed); ret = -1; goto out; } } else { gf_msg_debug(this->name, 0, "Reconfigure:" " lookup-unhashed reconfigured auto "); conf->search_unhashed = GF_DHT_LOOKUP_UNHASHED_AUTO; } } GF_OPTION_RECONF ("lookup-optimize", conf->lookup_optimize, options, bool, out); GF_OPTION_RECONF ("min-free-disk", conf->min_free_disk, options, percent_or_size, out); /* option can be any one of percent or bytes */ conf->disk_unit = 0; if (conf->min_free_disk < 100.0) conf->disk_unit = 'p'; GF_OPTION_RECONF ("min-free-inodes", conf->min_free_inodes, options, percent, out); GF_OPTION_RECONF ("directory-layout-spread", conf->dir_spread_cnt, options, uint32, out); GF_OPTION_RECONF ("readdir-optimize", conf->readdir_optimize, options, bool, out); GF_OPTION_RECONF ("randomize-hash-range-by-gfid", conf->randomize_by_gfid, options, bool, out); GF_OPTION_RECONF ("rebal-throttle", conf->dthrottle, options, str, out); GF_OPTION_RECONF ("lock-migration", conf->lock_migration_enabled, options, bool, out); if (conf->defrag) { conf->defrag->lock_migration_enabled = conf->lock_migration_enabled; GF_DECIDE_DEFRAG_THROTTLE_COUNT (throttle_count, conf); gf_msg ("DHT", GF_LOG_INFO, 0, DHT_MSG_REBAL_THROTTLE_INFO, "conf->dthrottle: %s, " "conf->defrag->recon_thread_count: %d", conf->dthrottle, conf->defrag->recon_thread_count); } if (conf->defrag) { GF_OPTION_RECONF ("rebalance-stats", conf->defrag->stats, options, bool, out); } if (dict_get_str (options, "decommissioned-bricks", &temp_str) == 0) { ret = dht_parse_decommissioned_bricks (this, conf, temp_str); if (ret == -1) goto out; } else { ret = dht_decommissioned_remove (this, conf); if (ret == -1) goto out; } dht_init_regex (this, options, "rsync-hash-regex", &conf->rsync_regex, &conf->rsync_regex_valid); dht_init_regex (this, options, "extra-hash-regex", &conf->extra_regex, &conf->extra_regex_valid); GF_OPTION_RECONF ("weighted-rebalance", conf->do_weighting, options, bool, out); GF_OPTION_RECONF ("use-readdirp", conf->use_readdirp, options, bool, out); ret = 0; out: return ret; } static int gf_defrag_pattern_list_fill (xlator_t *this, gf_defrag_info_t *defrag, char *data) { int ret = -1; char *tmp_str = NULL; char *tmp_str1 = NULL; char *dup_str = NULL; char *num = NULL; char *pattern_str = NULL; char *pattern = NULL; gf_defrag_pattern_list_t *temp_list = NULL; gf_defrag_pattern_list_t *pattern_list = NULL; if (!this || !defrag || !data) goto out; /* Get the pattern for pattern list. "pattern:" * eg: *avi, *pdf:10MB, *:1TB */ pattern_str = strtok_r (data, ",", &tmp_str); while (pattern_str) { dup_str = gf_strdup (pattern_str); pattern_list = GF_CALLOC (1, sizeof (gf_defrag_pattern_list_t), 1); if (!pattern_list) { goto out; } pattern = strtok_r (dup_str, ":", &tmp_str1); num = strtok_r (NULL, ":", &tmp_str1); if (!pattern) goto out; if (!num) { if (gf_string2bytesize_uint64(pattern, &pattern_list->size) == 0) { pattern = "*"; } } else if (gf_string2bytesize_uint64 (num, &pattern_list->size) != 0) { gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_INVALID_OPTION, "Invalid option. Defrag pattern:" " Invalid number format \"%s\"", num); goto out; } memcpy (pattern_list->path_pattern, pattern, strlen (dup_str)); if (!defrag->defrag_pattern) temp_list = NULL; else temp_list = defrag->defrag_pattern; pattern_list->next = temp_list; defrag->defrag_pattern = pattern_list; pattern_list = NULL; GF_FREE (dup_str); dup_str = NULL; pattern_str = strtok_r (NULL, ",", &tmp_str); } ret = 0; out: if (ret) GF_FREE (pattern_list); GF_FREE (dup_str); return ret; } int dht_init_methods (xlator_t *this) { int ret = -1; dht_conf_t *conf = NULL; dht_methods_t *methods = NULL; GF_VALIDATE_OR_GOTO ("dht", this, err); conf = this->private; methods = &(conf->methods); methods->migration_get_dst_subvol = dht_migration_get_dst_subvol; methods->migration_needed = dht_migration_needed; methods->migration_other = NULL; methods->layout_search = dht_layout_search; ret = 0; err: return ret; } int dht_init (xlator_t *this) { dht_conf_t *conf = NULL; char *temp_str = NULL; int ret = -1; int i = 0; gf_defrag_info_t *defrag = NULL; int cmd = 0; char *node_uuid = NULL; int throttle_count = 0; uint32_t commit_hash = 0; GF_VALIDATE_OR_GOTO ("dht", this, err); if (!this->children) { gf_msg (this->name, GF_LOG_CRITICAL, 0, DHT_MSG_INVALID_CONFIGURATION, "Distribute needs more than one subvolume"); return -1; } if (!this->parents) { gf_msg (this->name, GF_LOG_WARNING, 0, DHT_MSG_INVALID_CONFIGURATION, "dangling volume. check volfile"); } conf = GF_CALLOC (1, sizeof (*conf), gf_dht_mt_dht_conf_t); if (!conf) { goto err; } /* We get the commit-hash to set only for rebalance process */ if (dict_get_uint32 (this->options, "commit-hash", &commit_hash) == 0) { gf_msg (this->name, GF_LOG_INFO, 0, DHT_MSG_COMMIT_HASH_INFO, "%s using commit hash %u", __func__, commit_hash); conf->vol_commit_hash = commit_hash; conf->vch_forced = _gf_true; } ret = dict_get_int32 (this->options, "rebalance-cmd", &cmd); if (cmd) { defrag = GF_CALLOC (1, sizeof (gf_defrag_info_t), gf_defrag_info_mt); GF_VALIDATE_OR_GOTO (this->name, defrag, err); LOCK_INIT (&defrag->lock); defrag->is_exiting = 0; conf->defrag = defrag; ret = dict_get_str (this->options, "node-uuid", &node_uuid); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_INVALID_CONFIGURATION, "Invalid volume configuration: " "node-uuid not specified"); goto err; } if (gf_uuid_parse (node_uuid, defrag->node_uuid)) { gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_INVALID_OPTION, "Invalid option:" " Cannot parse glusterd node uuid"); goto err; } defrag->cmd = cmd; defrag->stats = _gf_false; defrag->queue = NULL; defrag->crawl_done = 0; defrag->global_error = 0; defrag->q_entry_count = 0; defrag->wakeup_crawler = 0; synclock_init (&defrag->link_lock, SYNC_LOCK_DEFAULT); pthread_mutex_init (&defrag->dfq_mutex, 0); pthread_cond_init (&defrag->parallel_migration_cond, 0); pthread_cond_init (&defrag->rebalance_crawler_alarm, 0); pthread_cond_init (&defrag->df_wakeup_thread, 0); defrag->global_error = 0; } conf->search_unhashed = GF_DHT_LOOKUP_UNHASHED_ON; if (dict_get_str (this->options, "lookup-unhashed", &temp_str) == 0) { /* If option is not "auto", other options _should_ be boolean */ if (strcasecmp (temp_str, "auto")) { ret = gf_string2boolean (temp_str, &conf->search_unhashed); if (ret == -1) goto err; } else conf->search_unhashed = GF_DHT_LOOKUP_UNHASHED_AUTO; } GF_OPTION_INIT ("lookup-optimize", conf->lookup_optimize, bool, err); GF_OPTION_INIT ("unhashed-sticky-bit", conf->unhashed_sticky_bit, bool, err); GF_OPTION_INIT ("use-readdirp", conf->use_readdirp, bool, err); GF_OPTION_INIT ("min-free-disk", conf->min_free_disk, percent_or_size, err); GF_OPTION_INIT ("min-free-inodes", conf->min_free_inodes, percent, err); conf->dir_spread_cnt = conf->subvolume_cnt; GF_OPTION_INIT ("directory-layout-spread", conf->dir_spread_cnt, uint32, err); GF_OPTION_INIT ("assert-no-child-down", conf->assert_no_child_down, bool, err); GF_OPTION_INIT ("readdir-optimize", conf->readdir_optimize, bool, err); GF_OPTION_INIT ("lock-migration", conf->lock_migration_enabled, bool, err); if (defrag) { defrag->lock_migration_enabled = conf->lock_migration_enabled; GF_OPTION_INIT ("rebalance-stats", defrag->stats, bool, err); if (dict_get_str (this->options, "rebalance-filter", &temp_str) == 0) { if (gf_defrag_pattern_list_fill (this, defrag, temp_str) == -1) { gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_INVALID_OPTION, "Invalid option:" " Cannot parse rebalance-filter (%s)", temp_str); goto err; } } } /* option can be any one of percent or bytes */ conf->disk_unit = 0; if (conf->min_free_disk < 100) conf->disk_unit = 'p'; ret = dht_init_subvolumes (this, conf); if (ret == -1) { goto err; } if (cmd) { ret = dht_init_local_subvolumes (this, conf); if (ret) { gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_INIT_LOCAL_SUBVOL_FAILED, "dht_init_local_subvolumes failed"); goto err; } } if (dict_get_str (this->options, "decommissioned-bricks", &temp_str) == 0) { ret = dht_parse_decommissioned_bricks (this, conf, temp_str); if (ret == -1) goto err; } dht_init_regex (this, this->options, "rsync-hash-regex", &conf->rsync_regex, &conf->rsync_regex_valid); dht_init_regex (this, this->options, "extra-hash-regex", &conf->extra_regex, &conf->extra_regex_valid); ret = dht_layouts_init (this, conf); if (ret == -1) { goto err; } LOCK_INIT (&conf->subvolume_lock); LOCK_INIT (&conf->layout_lock); conf->gen = 1; this->local_pool = mem_pool_new (dht_local_t, 512); if (!this->local_pool) { gf_msg (this->name, GF_LOG_ERROR, ENOMEM, DHT_MSG_NO_MEMORY, " DHT initialisation failed. " "failed to create local_t's memory pool"); goto err; } GF_OPTION_INIT ("randomize-hash-range-by-gfid", conf->randomize_by_gfid, bool, err); if (defrag) { GF_OPTION_INIT ("rebal-throttle", conf->dthrottle, str, err); GF_DECIDE_DEFRAG_THROTTLE_COUNT(throttle_count, conf); gf_msg_debug ("DHT", 0, "conf->dthrottle: %s, " "conf->defrag->recon_thread_count: %d", conf->dthrottle, conf->defrag->recon_thread_count); } GF_OPTION_INIT ("xattr-name", conf->xattr_name, str, err); gf_asprintf (&conf->link_xattr_name, "%s."DHT_LINKFILE_STR, conf->xattr_name); gf_asprintf (&conf->commithash_xattr_name, "%s."DHT_COMMITHASH_STR, conf->xattr_name); gf_asprintf (&conf->wild_xattr_name, "%s*", conf->xattr_name); if (!conf->link_xattr_name || !conf->wild_xattr_name) { goto err; } GF_OPTION_INIT ("weighted-rebalance", conf->do_weighting, bool, err); conf->lock_pool = mem_pool_new (dht_lock_t, 512); if (!conf->lock_pool) { gf_msg (this->name, GF_LOG_ERROR, 0, DHT_MSG_INIT_FAILED, "failed to create lock mem_pool, failing " "initialization"); goto err; } this->private = conf; if (dht_set_subvol_range(this)) goto err; if (dht_init_methods (this)) goto err; return 0; err: if (conf) { if (conf->file_layouts) { for (i = 0; i < conf->subvolume_cnt; i++) { GF_FREE (conf->file_layouts[i]); } GF_FREE (conf->file_layouts); } GF_FREE (conf->subvolumes); GF_FREE (conf->subvolume_status); GF_FREE (conf->du_stats); GF_FREE (conf->defrag); GF_FREE (conf->xattr_name); GF_FREE (conf->link_xattr_name); GF_FREE (conf->wild_xattr_name); if (conf->lock_pool) mem_pool_destroy (conf->lock_pool); GF_FREE (conf); } return -1; } struct volume_options options[] = { { .key = {"lookup-unhashed"}, .value = {"auto", "yes", "no", "enable", "disable", "1", "0", "on", "off"}, .type = GF_OPTION_TYPE_STR, .default_value = "on", .description = "This option if set to ON, does a lookup through " "all the sub-volumes, in case a lookup didn't return any result " "from the hash subvolume. If set to OFF, it does not do a lookup " "on the remaining subvolumes." }, { .key = {"lookup-optimize"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "off", .description = "This option if set to ON enables the optimization " "of -ve lookups, by not doing a lookup on non-hashed subvolumes for " "files, in case the hashed subvolume does not return any result. " "This option disregards the lookup-unhashed setting, when enabled." }, { .key = {"min-free-disk"}, .type = GF_OPTION_TYPE_PERCENT_OR_SIZET, .default_value = "10%", .description = "Percentage/Size of disk space, after which the " "process starts balancing out the cluster, and logs will appear " "in log files", }, { .key = {"min-free-inodes"}, .type = GF_OPTION_TYPE_PERCENT, .default_value = "5%", .description = "after system has only N% of inodes, warnings " "starts to appear in log files", }, { .key = {"unhashed-sticky-bit"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "off", }, { .key = {"use-readdirp"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "on", .description = "This option if set to ON, forces the use of " "readdirp, and hence also displays the stats of the files." }, { .key = {"assert-no-child-down"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "off", .description = "This option if set to ON, in the event of " "CHILD_DOWN, will call exit." }, { .key = {"directory-layout-spread"}, .type = GF_OPTION_TYPE_INT, .min = 1, .validate = GF_OPT_VALIDATE_MIN, .description = "Specifies the directory layout spread. Takes number " "of subvolumes as default value." }, { .key = {"decommissioned-bricks"}, .type = GF_OPTION_TYPE_ANY, .description = "This option if set to ON, decommissions " "the brick, so that no new data is allowed to be created " "on that brick." }, { .key = {"rebalance-cmd"}, .type = GF_OPTION_TYPE_INT, }, { .key = {"commit-hash"}, .type = GF_OPTION_TYPE_INT, }, { .key = {"node-uuid"}, .type = GF_OPTION_TYPE_STR, }, { .key = {"rebalance-stats"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "off", .description = "This option if set to ON displays and logs the " " time taken for migration of each file, during the rebalance " "process. If set to OFF, the rebalance logs will only display the " "time spent in each directory." }, { .key = {"readdir-optimize"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "off", .description = "This option if set to ON enables the optimization " "that allows DHT to requests non-first subvolumes to filter out " "directory entries." }, { .key = {"rsync-hash-regex"}, .type = GF_OPTION_TYPE_STR, /* Setting a default here doesn't work. See dht_init_regex. */ .description = "Regular expression for stripping temporary-file " "suffix and prefix used by rsync, to prevent relocation when the " "file is renamed." }, { .key = {"extra-hash-regex"}, .type = GF_OPTION_TYPE_STR, /* Setting a default here doesn't work. See dht_init_regex. */ .description = "Regular expression for stripping temporary-file " "suffix and prefix used by an application, to prevent relocation when " "the file is renamed." }, { .key = {"rebalance-filter"}, .type = GF_OPTION_TYPE_STR, }, { .key = {"xattr-name"}, .type = GF_OPTION_TYPE_STR, .default_value = "trusted.glusterfs.dht", .description = "Base for extended attributes used by this " "translator instance, to avoid conflicts with others above or " "below it." }, { .key = {"weighted-rebalance"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "on", .description = "When enabled, files will be allocated to bricks " "with a probability proportional to their size. Otherwise, all " "bricks will have the same probability (legacy behavior)." }, /* NUFA option */ { .key = {"local-volume-name"}, .type = GF_OPTION_TYPE_XLATOR }, /* tier options */ { .key = {"tier-pause"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "off", }, { .key = {"tier-promote-frequency"}, .type = GF_OPTION_TYPE_INT, .default_value = "120", .description = "Frequency to promote files to fast tier" }, { .key = {"tier-demote-frequency"}, .type = GF_OPTION_TYPE_INT, .default_value = "3600", .description = "Frequency to demote files to slow tier" }, { .key = {"write-freq-threshold"}, .type = GF_OPTION_TYPE_INT, .default_value = "0", }, { .key = {"read-freq-threshold"}, .type = GF_OPTION_TYPE_INT, .default_value = "0", }, { .key = {"watermark-hi"}, .type = GF_OPTION_TYPE_PERCENT, .default_value = "90", }, { .key = {"watermark-low"}, .type = GF_OPTION_TYPE_PERCENT, .default_value = "75", }, { .key = {"tier-mode"}, .type = GF_OPTION_TYPE_STR, .default_value = "test", }, { .key = {"tier-max-mb"}, .type = GF_OPTION_TYPE_INT, .default_value = "4000", }, { .key = {"tier-max-promote-file-size"}, .type = GF_OPTION_TYPE_INT, .default_value = "0", }, { .key = {"tier-max-files"}, .type = GF_OPTION_TYPE_INT, .default_value = "10000", }, /* switch option */ { .key = {"pattern.switch.case"}, .type = GF_OPTION_TYPE_ANY }, { .key = {"randomize-hash-range-by-gfid"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "off", .description = "Use gfid of directory to determine the subvolume " "from which hash ranges are allocated starting with 0. " "Note that we still use a directory/file's name to determine the " "subvolume to which it hashes" }, { .key = {"rebal-throttle"}, .type = GF_OPTION_TYPE_STR, .default_value = "normal", .description = " Sets the maximum number of parallel file migrations " "allowed on a node during the rebalance operation. The" " default value is normal and allows a max of " "[($(processing units) - 4) / 2), 2] files to be " "migrated at a time. Lazy will allow only one file to " "be migrated at a time and aggressive will allow " "max of [($(processing units) - 4) / 2), 4]" }, { .key = {"lock-migration"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "off", .description = " If enabled this feature will migrate the posix locks" " associated with a file during rebalance" }, { .key = {NULL} }, };