diff options
Diffstat (limited to 'xlators/cluster/afr-v1/src/afr.c')
-rw-r--r-- | xlators/cluster/afr-v1/src/afr.c | 793 |
1 files changed, 793 insertions, 0 deletions
diff --git a/xlators/cluster/afr-v1/src/afr.c b/xlators/cluster/afr-v1/src/afr.c new file mode 100644 index 000000000..c26453807 --- /dev/null +++ b/xlators/cluster/afr-v1/src/afr.c @@ -0,0 +1,793 @@ +/* + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com> + 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. +*/ + +#include <libgen.h> +#include <unistd.h> +#include <fnmatch.h> +#include <sys/time.h> +#include <stdlib.h> +#include <signal.h> + +#ifndef _CONFIG_H +#define _CONFIG_H +#include "config.h" +#endif +#include "afr-common.c" + +#define SHD_INODE_LRU_LIMIT 2048 +#define AFR_EH_HEALED_LIMIT 1024 +#define AFR_EH_HEAL_FAIL_LIMIT 1024 +#define AFR_EH_SPLIT_BRAIN_LIMIT 1024 + +struct volume_options options[]; + +int32_t +notify (xlator_t *this, int32_t event, + void *data, ...) +{ + int ret = -1; + va_list ap; + void *data2 = NULL; + + va_start (ap, data); + data2 = va_arg (ap, dict_t*); + va_end (ap); + ret = afr_notify (this, event, data, data2); + + return ret; +} + +int32_t +mem_acct_init (xlator_t *this) +{ + int ret = -1; + + if (!this) + return ret; + + ret = xlator_mem_acct_init (this, gf_afr_mt_end + 1); + + if (ret != 0) { + gf_log(this->name, GF_LOG_ERROR, "Memory accounting init" + "failed"); + return ret; + } + + return ret; +} + + +int +xlator_subvolume_index (xlator_t *this, xlator_t *subvol) +{ + int index = -1; + int i = 0; + xlator_list_t *list = NULL; + + list = this->children; + + while (list) { + if (subvol == list->xlator || + strcmp (subvol->name, list->xlator->name) == 0) { + index = i; + break; + } + list = list->next; + i++; + } + + return index; +} + +void +fix_quorum_options (xlator_t *this, afr_private_t *priv, char *qtype) +{ + if (priv->quorum_count && strcmp(qtype,"fixed")) { + gf_log(this->name,GF_LOG_WARNING, + "quorum-type %s overriding quorum-count %u", + qtype, priv->quorum_count); + } + if (!strcmp(qtype,"none")) { + priv->quorum_count = 0; + } + else if (!strcmp(qtype,"auto")) { + priv->quorum_count = AFR_QUORUM_AUTO; + } +} + +int +reconfigure (xlator_t *this, dict_t *options) +{ + afr_private_t *priv = NULL; + xlator_t *read_subvol = NULL; + int read_subvol_index = -1; + int ret = -1; + int index = -1; + char *qtype = NULL; + + priv = this->private; + + GF_OPTION_RECONF ("background-self-heal-count", + priv->background_self_heal_count, options, uint32, + out); + + GF_OPTION_RECONF ("metadata-self-heal", + priv->metadata_self_heal, options, bool, out); + + GF_OPTION_RECONF ("data-self-heal", priv->data_self_heal, options, str, + out); + + GF_OPTION_RECONF ("entry-self-heal", priv->entry_self_heal, options, + bool, out); + + GF_OPTION_RECONF ("strict-readdir", priv->strict_readdir, options, bool, + out); + + GF_OPTION_RECONF ("data-self-heal-window-size", + priv->data_self_heal_window_size, options, + uint32, out); + + GF_OPTION_RECONF ("data-change-log", priv->data_change_log, options, + bool, out); + + GF_OPTION_RECONF ("metadata-change-log", + priv->metadata_change_log, options, bool, out); + + GF_OPTION_RECONF ("entry-change-log", priv->entry_change_log, options, + bool, out); + + GF_OPTION_RECONF ("data-self-heal-algorithm", + priv->data_self_heal_algorithm, options, str, out); + + GF_OPTION_RECONF ("self-heal-daemon", priv->shd.enabled, options, bool, out); + + GF_OPTION_RECONF ("read-subvolume", read_subvol, options, xlator, out); + + GF_OPTION_RECONF ("read-hash-mode", priv->hash_mode, + options, uint32, out); + + if (read_subvol) { + index = xlator_subvolume_index (this, read_subvol); + if (index == -1) { + gf_log (this->name, GF_LOG_ERROR, "%s not a subvolume", + read_subvol->name); + goto out; + } + priv->read_child = index; + } + + GF_OPTION_RECONF ("read-subvolume-index",read_subvol_index, options,int32,out); + + if (read_subvol_index >-1) { + index=read_subvol_index; + if (index >= priv->child_count) { + gf_log (this->name, GF_LOG_ERROR, "%d not a subvolume-index", + index); + goto out; + } + priv->read_child = index; + } + + GF_OPTION_RECONF ("eager-lock", priv->eager_lock, options, bool, out); + GF_OPTION_RECONF ("quorum-type", qtype, options, str, out); + GF_OPTION_RECONF ("quorum-count", priv->quorum_count, options, + uint32, out); + fix_quorum_options(this,priv,qtype); + GF_OPTION_RECONF ("heal-timeout", priv->shd.timeout, options, + int32, out); + + GF_OPTION_RECONF ("post-op-delay-secs", priv->post_op_delay_secs, options, + uint32, out); + + GF_OPTION_RECONF (AFR_SH_READDIR_SIZE_KEY, priv->sh_readdir_size, + options, size, out); + /* Reset this so we re-discover in case the topology changed. */ + GF_OPTION_RECONF ("readdir-failover", priv->readdir_failover, options, + bool, out); + GF_OPTION_RECONF ("ensure-durability", priv->ensure_durability, options, + bool, out); + priv->did_discovery = _gf_false; + + ret = 0; +out: + return ret; + +} + + +static const char *favorite_child_warning_str = "You have specified subvolume '%s' " + "as the 'favorite child'. This means that if a discrepancy in the content " + "or attributes (ownership, permission, etc.) of a file is detected among " + "the subvolumes, the file on '%s' will be considered the definitive " + "version and its contents will OVERWRITE the contents of the file on other " + "subvolumes. All versions of the file except that on '%s' " + "WILL BE LOST."; + + +int32_t +init (xlator_t *this) +{ + afr_private_t *priv = NULL; + int child_count = 0; + xlator_list_t *trav = NULL; + int i = 0; + int ret = -1; + GF_UNUSED int op_errno = 0; + xlator_t *read_subvol = NULL; + int read_subvol_index = -1; + xlator_t *fav_child = NULL; + char *qtype = NULL; + + if (!this->children) { + gf_log (this->name, GF_LOG_ERROR, + "replicate translator needs more than one " + "subvolume defined."); + return -1; + } + + if (!this->parents) { + gf_log (this->name, GF_LOG_WARNING, + "Volume is dangling."); + } + + this->private = GF_CALLOC (1, sizeof (afr_private_t), + gf_afr_mt_afr_private_t); + if (!this->private) + goto out; + + priv = this->private; + LOCK_INIT (&priv->lock); + LOCK_INIT (&priv->read_child_lock); + //lock recovery is not done in afr + pthread_mutex_init (&priv->mutex, NULL); + INIT_LIST_HEAD (&priv->saved_fds); + + child_count = xlator_subvolume_count (this); + + priv->child_count = child_count; + + priv->read_child = -1; + + GF_OPTION_INIT ("read-subvolume", read_subvol, xlator, out); + if (read_subvol) { + priv->read_child = xlator_subvolume_index (this, read_subvol); + if (priv->read_child == -1) { + gf_log (this->name, GF_LOG_ERROR, "%s not a subvolume", + read_subvol->name); + goto out; + } + } + GF_OPTION_INIT ("read-subvolume-index",read_subvol_index,int32,out); + if (read_subvol_index > -1) { + if (read_subvol_index >= priv->child_count) { + gf_log (this->name, GF_LOG_ERROR, "%d not a subvolume-index", + read_subvol_index); + goto out; + } + priv->read_child = read_subvol_index; + } + GF_OPTION_INIT ("choose-local", priv->choose_local, bool, out); + + GF_OPTION_INIT ("read-hash-mode", priv->hash_mode, uint32, out); + + priv->favorite_child = -1; + GF_OPTION_INIT ("favorite-child", fav_child, xlator, out); + if (fav_child) { + priv->favorite_child = xlator_subvolume_index (this, fav_child); + if (priv->favorite_child == -1) { + gf_log (this->name, GF_LOG_ERROR, "%s not a subvolume", + fav_child->name); + goto out; + } + gf_log (this->name, GF_LOG_WARNING, + favorite_child_warning_str, fav_child->name, + fav_child->name, fav_child->name); + } + + + GF_OPTION_INIT ("background-self-heal-count", + priv->background_self_heal_count, uint32, out); + + GF_OPTION_INIT ("data-self-heal", priv->data_self_heal, str, out); + + GF_OPTION_INIT ("data-self-heal-algorithm", + priv->data_self_heal_algorithm, str, out); + + GF_OPTION_INIT ("data-self-heal-window-size", + priv->data_self_heal_window_size, uint32, out); + + GF_OPTION_INIT ("metadata-self-heal", priv->metadata_self_heal, bool, + out); + + GF_OPTION_INIT ("entry-self-heal", priv->entry_self_heal, bool, out); + + GF_OPTION_INIT ("self-heal-daemon", priv->shd.enabled, bool, out); + + GF_OPTION_INIT ("iam-self-heal-daemon", priv->shd.iamshd, bool, out); + + GF_OPTION_INIT ("data-change-log", priv->data_change_log, bool, out); + + GF_OPTION_INIT ("metadata-change-log", priv->metadata_change_log, bool, + out); + + GF_OPTION_INIT ("entry-change-log", priv->entry_change_log, bool, out); + + GF_OPTION_INIT ("optimistic-change-log", priv->optimistic_change_log, + bool, out); + + GF_OPTION_INIT ("inodelk-trace", priv->inodelk_trace, bool, out); + + GF_OPTION_INIT ("entrylk-trace", priv->entrylk_trace, bool, out); + + GF_OPTION_INIT ("strict-readdir", priv->strict_readdir, bool, out); + + GF_OPTION_INIT ("eager-lock", priv->eager_lock, bool, out); + GF_OPTION_INIT ("quorum-type", qtype, str, out); + GF_OPTION_INIT ("quorum-count", priv->quorum_count, uint32, out); + GF_OPTION_INIT (AFR_SH_READDIR_SIZE_KEY, priv->sh_readdir_size, size, + out); + fix_quorum_options(this,priv,qtype); + + GF_OPTION_INIT ("post-op-delay-secs", priv->post_op_delay_secs, uint32, out); + GF_OPTION_INIT ("readdir-failover", priv->readdir_failover, bool, out); + GF_OPTION_INIT ("ensure-durability", priv->ensure_durability, bool, + out); + + priv->wait_count = 1; + + priv->child_up = GF_CALLOC (sizeof (unsigned char), child_count, + gf_afr_mt_char); + if (!priv->child_up) { + ret = -ENOMEM; + goto out; + } + + for (i = 0; i < child_count; i++) + priv->child_up[i] = -1; /* start with unknown state. + this initialization needed + for afr_notify() to work + reliably + */ + + priv->children = GF_CALLOC (sizeof (xlator_t *), child_count, + gf_afr_mt_xlator_t); + if (!priv->children) { + ret = -ENOMEM; + goto out; + } + + priv->pending_key = GF_CALLOC (sizeof (*priv->pending_key), + child_count, + gf_afr_mt_char); + if (!priv->pending_key) { + ret = -ENOMEM; + goto out; + } + + trav = this->children; + i = 0; + while (i < child_count) { + priv->children[i] = trav->xlator; + + ret = gf_asprintf (&priv->pending_key[i], "%s.%s", + AFR_XATTR_PREFIX, + trav->xlator->name); + if (-1 == ret) { + ret = -ENOMEM; + goto out; + } + + trav = trav->next; + i++; + } + + ret = gf_asprintf (&priv->sh_domain, AFR_SH_DATA_DOMAIN_FMT, + this->name); + if (-1 == ret) { + ret = -ENOMEM; + goto out; + } + + priv->last_event = GF_CALLOC (child_count, sizeof (*priv->last_event), + gf_afr_mt_int32_t); + if (!priv->last_event) { + ret = -ENOMEM; + goto out; + } + + /* keep more local here as we may need them for self-heal etc */ + this->local_pool = mem_pool_new (afr_local_t, 512); + if (!this->local_pool) { + ret = -1; + gf_log (this->name, GF_LOG_ERROR, + "failed to create local_t's memory pool"); + goto out; + } + + priv->first_lookup = 1; + priv->root_inode = NULL; + + if (!priv->shd.iamshd) { + ret = 0; + goto out; + } + + ret = -ENOMEM; + priv->shd.pos = GF_CALLOC (sizeof (*priv->shd.pos), child_count, + gf_afr_mt_brick_pos_t); + if (!priv->shd.pos) + goto out; + + priv->shd.pending = GF_CALLOC (sizeof (*priv->shd.pending), child_count, + gf_afr_mt_int32_t); + if (!priv->shd.pending) + goto out; + + priv->shd.inprogress = GF_CALLOC (sizeof (*priv->shd.inprogress), + child_count, gf_afr_mt_shd_bool_t); + if (!priv->shd.inprogress) + goto out; + priv->shd.timer = GF_CALLOC (sizeof (*priv->shd.timer), child_count, + gf_afr_mt_shd_timer_t); + if (!priv->shd.timer) + goto out; + + priv->shd.healed = eh_new (AFR_EH_HEALED_LIMIT, _gf_false, + _destroy_shd_event_data); + if (!priv->shd.healed) + goto out; + + priv->shd.heal_failed = eh_new (AFR_EH_HEAL_FAIL_LIMIT, _gf_false, + _destroy_shd_event_data); + if (!priv->shd.heal_failed) + goto out; + + priv->shd.split_brain = eh_new (AFR_EH_SPLIT_BRAIN_LIMIT, _gf_false, + _destroy_shd_event_data); + if (!priv->shd.split_brain) + goto out; + + this->itable = inode_table_new (SHD_INODE_LRU_LIMIT, this); + if (!this->itable) + goto out; + priv->root_inode = inode_ref (this->itable->root); + GF_OPTION_INIT ("node-uuid", priv->shd.node_uuid, str, out); + GF_OPTION_INIT ("heal-timeout", priv->shd.timeout, int32, out); + ret = afr_initialise_statistics (this); + if (ret) + goto out; + ret = 0; +out: + return ret; +} + + +int +fini (xlator_t *this) +{ + afr_private_t *priv = NULL; + + priv = this->private; + this->private = NULL; + afr_priv_destroy (priv); + if (this->itable);//I dont see any destroy func + + return 0; +} + + +struct xlator_fops fops = { + .lookup = afr_lookup, + .open = afr_open, + .lk = afr_lk, + .flush = afr_flush, + .statfs = afr_statfs, + .fsync = afr_fsync, + .fsyncdir = afr_fsyncdir, + .xattrop = afr_xattrop, + .fxattrop = afr_fxattrop, + .inodelk = afr_inodelk, + .finodelk = afr_finodelk, + .entrylk = afr_entrylk, + .fentrylk = afr_fentrylk, + .fallocate = afr_fallocate, + .discard = afr_discard, + .zerofill = afr_zerofill, + + /* inode read */ + .access = afr_access, + .stat = afr_stat, + .fstat = afr_fstat, + .readlink = afr_readlink, + .getxattr = afr_getxattr, + .fgetxattr = afr_fgetxattr, + .readv = afr_readv, + + /* inode write */ + .writev = afr_writev, + .truncate = afr_truncate, + .ftruncate = afr_ftruncate, + .setxattr = afr_setxattr, + .fsetxattr = afr_fsetxattr, + .setattr = afr_setattr, + .fsetattr = afr_fsetattr, + .removexattr = afr_removexattr, + .fremovexattr = afr_fremovexattr, + + /* dir read */ + .opendir = afr_opendir, + .readdir = afr_readdir, + .readdirp = afr_readdirp, + + /* dir write */ + .create = afr_create, + .mknod = afr_mknod, + .mkdir = afr_mkdir, + .unlink = afr_unlink, + .rmdir = afr_rmdir, + .link = afr_link, + .symlink = afr_symlink, + .rename = afr_rename, +}; + + +struct xlator_dumpops dumpops = { + .priv = afr_priv_dump, +}; + + +struct xlator_cbks cbks = { + .release = afr_release, + .releasedir = afr_releasedir, + .forget = afr_forget, +}; + + +struct volume_options options[] = { + { .key = {"read-subvolume" }, + .type = GF_OPTION_TYPE_XLATOR, + .description = "inode-read fops happen only on one of the bricks in " + "replicate. Afr will prefer the one specified using " + "this option if it is not stale. Option value must be " + "one of the xlator names of the children. " + "Ex: <volname>-client-0 till " + "<volname>-client-<number-of-bricks - 1>" + }, + { .key = {"read-subvolume-index" }, + .type = GF_OPTION_TYPE_INT, + .default_value = "-1", + .description = "inode-read fops happen only on one of the bricks in " + "replicate. AFR will prefer the one specified using " + "this option if it is not stale. allowed options" + " include -1 till replica-count - 1" + }, + { .key = {"read-hash-mode" }, + .type = GF_OPTION_TYPE_INT, + .min = 0, + .max = 2, + .default_value = "0", + .description = "inode-read fops happen only on one of the bricks in " + "replicate. AFR will prefer the one computed using " + "the method specified using this option" + "0 = first responder, " + "1 = hash by GFID of file (all clients use " + "same subvolume), " + "2 = hash by GFID of file and client PID", + }, + { .key = {"choose-local" }, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "true", + .description = "Choose a local subvolume (i.e. Brick) to read from" + " if read-subvolume is not explicitly set.", + }, + { .key = {"favorite-child"}, + .type = GF_OPTION_TYPE_XLATOR, + .description = "If a split-brain happens choose subvol/brick set by " + "this option as source." + }, + { .key = {"background-self-heal-count"}, + .type = GF_OPTION_TYPE_INT, + .min = 0, + .default_value = "16", + .validate = GF_OPT_VALIDATE_MIN, + .description = "This specifies the number of self-heals that can be " + " performed in background without blocking the fop" + }, + { .key = {"data-self-heal"}, + .type = GF_OPTION_TYPE_STR, + .value = {"1", "on", "yes", "true", "enable", + "0", "off", "no", "false", "disable", + "open"}, + .default_value = "on", + .description = "Using this option we can enable/disable data " + "self-heal on the file. \"open\" means data " + "self-heal action will only be triggered by file " + "open operations." + }, + { .key = {"data-self-heal-algorithm"}, + .type = GF_OPTION_TYPE_STR, + .description = "Select between \"full\", \"diff\". The " + "\"full\" algorithm copies the entire file from " + "source to sink. The \"diff\" algorithm copies to " + "sink only those blocks whose checksums don't match " + "with those of source. If no option is configured " + "the option is chosen dynamically as follows: " + "If the file does not exist on one of the sinks " + "or empty file exists or if the source file size is " + "about the same as page size the entire file will " + "be read and written i.e \"full\" algo, " + "otherwise \"diff\" algo is chosen.", + .value = { "diff", "full"} + }, + { .key = {"data-self-heal-window-size"}, + .type = GF_OPTION_TYPE_INT, + .min = 1, + .max = 1024, + .default_value = "1", + .description = "Maximum number blocks per file for which self-heal " + "process would be applied simultaneously." + }, + { .key = {"metadata-self-heal"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Using this option we can enable/disable metadata " + "i.e. Permissions, ownerships, xattrs self-heal on " + "the file/directory." + }, + { .key = {"entry-self-heal"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Using this option we can enable/disable entry " + "self-heal on the directory." + }, + { .key = {"data-change-log"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Data fops like write/truncate will not perform " + "pre/post fop changelog operations in afr transaction " + "if this option is disabled" + }, + { .key = {"metadata-change-log"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Metadata fops like setattr/setxattr will not perform " + "pre/post fop changelog operations in afr transaction " + "if this option is disabled" + }, + { .key = {"entry-change-log"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Entry fops like create/unlink will not perform " + "pre/post fop changelog operations in afr transaction " + "if this option is disabled" + }, + { .key = {"optimistic-change-log"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Entry/Metadata fops will not perform " + "pre fop changelog operations in afr transaction " + "if this option is enabled." + }, + { .key = {"strict-readdir"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + }, + { .key = {"inodelk-trace"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "Enabling this option logs inode lock/unlocks" + }, + { .key = {"entrylk-trace"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "Enabling this option logs entry lock/unlocks" + }, + { .key = {"eager-lock"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "Lock phase of a transaction has two sub-phases. " + "First is an attempt to acquire locks in parallel by " + "broadcasting non-blocking lock requests. If lock " + "acquisition fails on any server, then the held locks " + "are unlocked and revert to a blocking locked mode " + "sequentially on one server after another. If this " + "option is enabled the initial broadcasting lock " + "request attempt to acquire lock on the entire file. " + "If this fails, we revert back to the sequential " + "\"regional\" blocking lock as before. In the case " + "where such an \"eager\" lock is granted in the " + "non-blocking phase, it gives rise to an opportunity " + "for optimization. i.e, if the next write transaction " + "on the same FD arrives before the unlock phase of " + "the first transaction, it \"takes over\" the full " + "file lock. Similarly if yet another data transaction " + "arrives before the unlock phase of the \"optimized\" " + "transaction, that in turn \"takes over\" the lock as " + "well. The actual unlock now happens at the end of " + "the last \"optimized\" transaction." + + }, + { .key = {"self-heal-daemon"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "on", + .description = "This option applies to only self-heal-daemon. " + "Index directory crawl and automatic healing of files " + "will not be performed if this option is turned off." + }, + { .key = {"iam-self-heal-daemon"}, + .type = GF_OPTION_TYPE_BOOL, + .default_value = "off", + .description = "This option differentiates if the replicate " + "translator is running as part of self-heal-daemon " + "or not." + }, + { .key = {"quorum-type"}, + .type = GF_OPTION_TYPE_STR, + .value = { "none", "auto", "fixed"}, + .default_value = "none", + .description = "If value is \"fixed\" only allow writes if " + "quorum-count bricks are present. If value is " + "\"auto\" only allow writes if more than half of " + "bricks, or exactly half including the first, are " + "present.", + }, + { .key = {"quorum-count"}, + .type = GF_OPTION_TYPE_INT, + .min = 1, + .max = INT_MAX, + .default_value = 0, + .description = "If quorum-type is \"fixed\" only allow writes if " + "this many bricks or present. Other quorum types " + "will OVERWRITE this value.", + }, + { .key = {"node-uuid"}, + .type = GF_OPTION_TYPE_STR, + .description = "Local glusterd uuid string, used in starting " + "self-heal-daemon so that it can crawl only on " + "local index directories.", + }, + { .key = {"heal-timeout"}, + .type = GF_OPTION_TYPE_INT, + .min = 60, + .max = INT_MAX, + .default_value = "600", + .description = "time interval for checking the need to self-heal " + "in self-heal-daemon" + }, + { .key = {"post-op-delay-secs"}, + .type = GF_OPTION_TYPE_INT, + .min = 0, + .max = INT_MAX, + .default_value = "1", + .description = "Time interval induced artificially before " + "post-operation phase of the transaction to " + "enhance overlap of adjacent write operations.", + }, + { .key = {AFR_SH_READDIR_SIZE_KEY}, + .type = GF_OPTION_TYPE_SIZET, + .description = "readdirp size for performing entry self-heal", + .min = 1024, + .max = 131072, + .default_value = "1KB", + }, + { .key = {"readdir-failover"}, + .type = GF_OPTION_TYPE_BOOL, + .description = "readdir(p) will not failover if this option is off", + .default_value = "on", + }, + { .key = {"ensure-durability"}, + .type = GF_OPTION_TYPE_BOOL, + .description = "Afr performs fsyncs for transactions if this " + "option is on to make sure the changelogs/data is " + "written to the disk", + .default_value = "on", + }, + { .key = {NULL} }, +}; |